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A

A (named a , plural aes) is the first letter and vowel in the ISO basic Latin alphabet. It is similar to the Ancient Greek letter alpha, from which it derives. The upper-case version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lower-case version can be written in two forms: the double-storey a and single-storey ɑ. The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children. It is also found in italic type. == History == The earliest certain ancestor of "A" is aleph (also called 'aleph), the first letter of the Phoenician alphabet (which, by consisting entirely of consonants, is an abjad rather than a true alphabet). In turn, the origin of aleph may have been a pictogram of an ox head in proto-Sinaitic script influenced by Egyptian hieroglyphs, styled as a triangular head with two horns extended. In 1600 B.C.E., the Phoenician alphabet's letter had a linear form that served as the base for some later forms. Its name must have corresponded closely to the Hebrew or Arabic aleph. When the ancient Greeks adopted the alphabet, they had no use for the glottal stop—the first phoneme of the Phoenician pronunciation of the letter, and the sound that the letter denoted in Phoenician and other Semitic languages—so they used an adaptation of the sign to represent the vowel , and gave it the similar name of alpha. In the earliest Greek inscriptions after the Greek Dark Ages, dating to the 8th century BC, the letter rests upon its side, but in the Greek alphabet of later times it generally resembles the modern capital letter, although many local varieties can be distinguished by the shortening of one leg, or by the angle at which the cross line is set. The Etruscans brought the Greek alphabet to their civilization in the Italian Peninsula and left the letter unchanged. The Romans later adopted the Etruscan alphabet to write the Latin language, and the resulting letter was preserved in the Latin alphabet used to write many languages, including English. === Typographic variants === During Roman times, there were many variations on the letter "A". First was the monumental or lapidary style, which was used when inscribing on stone or other "permanent" mediums. For perishable surfaces, what was used for everyday or utilitarian purposes, a cursive style was used. Due to the "perishable" nature of the surfaces, these examples are not as prevalent as the monumental. This perishable style was called cursive and numerous variations have survived, such as majuscule cursive, minuscule cursive, and semicursive minuscule. There were also variants that were intermediate between the monumental and the cursive. The known variants include the early semi-uncial, the uncial, and the later semi-uncial. At the termination of the Roman Empire (5th century AD), several variants of the cursive minuscule appeared through Western Europe. Among these were the semicursive minuscule of Italy, the Merovingian script in France, the Visigothic script in Spain, and the Insular or Anglo-Irish semi-uncial or Anglo-Saxon majuscule, of Great Britain. By the 9th century, the Caroline script, which was very similar to the present-day form, was the principal form used in book-making, before the advent of the printing press. This form was derived through a combining of prior forms. 15th-century Italy saw the formation of the two variants that are known today. These variants, the Italics and Roman forms, were derived from the Caroline Script version. The Italics form used in most current handwriting consists of a circle and vertical stroke (), called Latin alpha or "script a". This slowly developed from the fifth-century form resembling the Greek letter tau in the hands of dark-age Irish and English writers. Most printed material uses the Roman form consisting of a small loop with an arc over it (). Both derive from the majuscule (capital) form. In Greek handwriting, it was common to join the left leg and horizontal stroke into a single loop, as demonstrated by the uncial version shown. Many fonts then made the right leg vertical. In some of these, the serif that began the right leg stroke developed into an arc, resulting in the printed form, while in others it was dropped, resulting in the modern handwritten form. == Use in English == In English orthography, the letter A currently represents six different vowel sounds: A by itself frequently denotes the near-open front unrounded vowel () as in pad; the open back unrounded vowel () as in father, its original, Latin and Greek, sound; a closer, further fronted sound as in "hare", which developed as the sound progressed from "father" to "ace"; in concert with a later orthographic vowel, the diphthong as in ace and major, due to effects of the Great Vowel Shift; the more rounded form in "water" or its closely related cousin, found in "was". The double "a" sequence is not a native English combination; however it occurs in some foreign words such as Aaron and aardvark. "A" is the third-most-commonly used letter in English (after "E" and "T"), and the second most common in Spanish and French. In one study, on average, about 3.68% of letters used in English tend to be 'a', while the number is 6.22% in Spanish and 3.95% in French. == Use in other languages == In most languages that use the Latin alphabet, A denotes an open unrounded vowel: , , or . An exception is Saanich, in which A (and Á) stands for a close-mid front unrounded vowel . == Use in mathematics, logic and science == In algebra, the letter "A" along with other letters at the beginning of the alphabet is used to represent known quantities, whereas the letters at the end of the alphabet (x,y,z) are used to denote unknown quantities. In geometry, capital A, B, C etc. are used to denote segments, lines, rays, etc. A capital A is also typically used as one of the letters to represent an angle in a triangle, the lowercase a representing the side opposite angle A. In logic, A is used to signify the universal affirmative. In physics, A is the SI unit symbol for Ampere. In phonetic and phonemic notation: *in the International Phonetic Alphabet, is used for the open front unrounded vowel, is used for the open central unrounded vowel and is used for the open back unrounded vowel. *in X-SAMPA, [a] is used for the open front unrounded vowel and [A] is used for the open back unrounded vowel. == Other uses == "A" is often used to denote something or someone of a better or more prestigious quality or status: A-, A or A+, the best grade that can be assigned by teachers for students' schoolwork; "A grade" for clean restaurants; A-list celebrities, etc. Such associations can have a motivating effect, as exposure to the letter A has been found to improve performance, when compared with other letters. A is a common symbol of school and basic phonetics in the US, along with B and C. Finally, the letter A is used to denote size, as in a narrow size shoe, or a small cup size in a brassiere. == Related letters and other similar characters == * Α α : Greek letter alpha * А а : Cyrillic letter A * : Latin letter alpha / script A * : a turned lowercase letter A, used by the International Phonetic Alphabet for the near-open central vowel * : a turned capital letter A, used in predicate logic to specify universal quantification ("for all") * ª : an ordinal indicator * Æ æ : Latin AE ligature * Å å : A letter used in various Scandinavian (and other) languages == Other representations ==

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Albedo

Albedo (), or reflection coefficient, derived from Latin albedo "whiteness" (or reflected sunlight) in turn from albus "white", is the diffuse reflectivity or reflecting power of a surface. It is the ratio of reflected radiation from the surface to incident radiation upon it. Its dimensionless nature lets it be expressed as a percentage and is measured on a scale from zero for no reflection of a perfectly black surface to 1 for perfect reflection of a white surface. Albedo depends on the frequency of the radiation. When quoted unqualified, it usually refers to some appropriate average across the spectrum of visible light. In general, the albedo depends on the directional distribution of incident radiation, except for Lambertian surfaces, which scatter radiation in all directions according to a cosine function and therefore have an albedo that is independent of the incident distribution. In practice, a bidirectional reflectance distribution function (BRDF) may be required to accurately characterize the scattering properties of a surface, but albedo is very useful as a first approximation. The albedo is an important concept in climatology, astronomy, and calculating reflectivity of surfaces in LEED sustainable-rating systems for buildings. The average overall albedo of Earth, its planetary albedo, is 30 to 35% because of cloud cover, but widely varies locally across the surface because of different geological and environmental features. The term was introduced into optics by Johann Heinrich Lambert in his 1760 work Photometria. == Terrestrial albedo == Albedos of typical materials in visible light range from up to 0.9 for fresh snow to about 0.04 for charcoal, one of the darkest substances. Deeply shadowed cavities can achieve an effective albedo approaching the zero of a black body. When seen from a distance, the ocean surface has a low albedo, as do most forests, whereas desert areas have some of the highest albedos among landforms. Most land areas are in an albedo range of 0.1 to 0.4. The average albedo of the Earth is about 0.3. This is far higher than for the ocean primarily because of the contribution of clouds. Earth's surface albedo is regularly estimated via Earth observation satellite sensors such as NASA's MODIS instruments on board the Terra and Aqua satellites. As the total amount of reflected radiation cannot be directly measured by satellite, a mathematical model of the BRDF is used to translate a sample set of satellite reflectance measurements into estimates of directional-hemispherical reflectance and bi-hemispherical reflectance (e.g.). Earth's average surface temperature due to its albedo and the greenhouse effect is currently about 15 °C. If Earth were frozen entirely (and hence be more reflective) the average temperature of the planet would drop below −40 °C. If only the continental land masses became covered by glaciers, the mean temperature of the planet would drop to about 0 °C. In contrast, if the entire Earth is covered by water—a so-called aquaplanet—the average temperature on the planet would rise to just under 27 °C. === White-sky and black-sky albedo === It has been shown that for many applications involving terrestrial albedo, the albedo at a particular solar zenith angle θi can reasonably be approximated by the proportionate sum of two terms: the directional-hemispherical reflectance at that solar zenith angle, {\bar \alpha(\theta_i)}, and the bi-hemispherical reflectance, \bar{ \bar \alpha} the proportion concerned being defined as the proportion of diffuse illumination {D}. Albedo {\alpha} can then be given as: Directional-hemispherical reflectance is sometimes referred to as black-sky albedo and bi-hemispherical reflectance as white-sky albedo. These terms are important because they allow the albedo to be calculated for any given illumination conditions from a knowledge of the intrinsic properties of the surface. == Astronomical albedo == The albedos of planets, satellites and asteroids can be used to infer much about their properties. The study of albedos, their dependence on wavelength, lighting angle ("phase angle"), and variation in time comprises a major part of the astronomical field of photometry. For small and far objects that cannot be resolved by telescopes, much of what we know comes from the study of their albedos. For example, the absolute albedo can indicate the surface ice content of outer Solar System objects, the variation of albedo with phase angle gives information about regolith properties, whereas unusually high radar albedo is indicative of high metal content in asteroids. Enceladus, a moon of Saturn, has one of the highest known albedos of any body in the Solar System, with 99% of EM radiation reflected. Another notable high-albedo body is Eris, with an albedo of 0.96. Many small objects in the outer Solar System and asteroid belt have low albedos down to about 0.05. A typical comet nucleus has an albedo of 0.04. Such a dark surface is thought to be indicative of a primitive and heavily space weathered surface containing some organic compounds. The overall albedo of the Moon is around 0.12, but it is strongly directional and non-Lambertian, displaying also a strong opposition effect. Although such reflectance properties are different from those of any terrestrial terrains, they are typical of the regolith surfaces of airless Solar System bodies. Two common albedos that are used in astronomy are the (V-band) geometric albedo (measuring brightness when illumination comes from directly behind the observer) and the Bond albedo (measuring total proportion of electromagnetic energy reflected). Their values can differ significantly, which is a common source of confusion. In detailed studies, the directional reflectance properties of astronomical bodies are often expressed in terms of the five Hapke parameters which semi-empirically describe the variation of albedo with phase angle, including a characterization of the opposition effect of regolith surfaces. The correlation between astronomical (geometric) albedo, absolute magnitude and diameter is: A =\left ( \frac{1329\times10^{-H/5}}{D} \right ) ^2, where A is the astronomical albedo, D is the diameter in kilometers, and H is the absolute magnitude. == Examples of terrestrial albedo effects == === Illumination === Although the albedo–temperature effect is best known in colder, whiter regions on Earth, the maximum albedo is actually found in the tropics where year-round illumination is greater. The maximum is additionally in the northern hemisphere, varying between three and twelve degrees north. The minima are found in the subtropical regions of the northern and southern hemispheres, beyond which albedo increases without respect to illumination. === Insolation effects === The intensity of albedo temperature effects depend on the amount of albedo and the level of local insolation; high albedo areas in the arctic and antarctic regions are cold due to low insolation, where areas such as the Sahara Desert, which also have a relatively high albedo, will be hotter due to high insolation. Tropical and sub-tropical rain forest areas have low albedo, and are much hotter than their temperate forest counterparts, which have lower insolation. Because insolation plays such a big role in the heating and cooling effects of albedo, high insolation areas like the tropics will tend to show a more pronounced fluctuation in local temperature when local albedo changes. === Climate and weather === Albedo affects climate and drives weather. All weather is a result of the uneven heating of Earth caused by different areas of the planet having different albedos. Essentially, for the driving of weather, there are two types of albedo regions on Earth: Land and ocean. Land and ocean regions produce the four basic different types of air masses, depending on latitude and therefore insolation: Warm and dry, which form over tropical and sub-tropical land masses; warm and wet, which form over tropical and sub-tropical oceans; cold and dry which form over temperate, polar and sub-polar land masses; and cold and wet, which form over temperate, polar and sub-polar oceans. Different temperatures between the air masses result in different air pressures, and the masses develop into pressure systems. High pressure systems flow toward lower pressure, driving weather from north to south in the northern hemisphere, and south to north in the lower; however due to the spinning of Earth, the Coriolis effect further complicates flow and creates several weather/climate bands and the jet streams. === Albedo–temperature feedback === When an area's albedo changes due to snowfall, a snow–temperature feedback results. A layer of snowfall increases local albedo, reflecting away sunlight, leading to local cooling. In principle, if no outside temperature change affects this area (e.g. a warm air mass), the lowered albedo and lower temperature would maintain the current snow and invite further snowfall, deepening the snow–temperature feedback. However, because local weather is dynamic due to the change of seasons, eventually warm air masses and a more direct angle of sunlight (higher insolation) cause melting. When the melted area reveals surfaces with lower albedo, such as grass or soil, the effect is reversed: the darkening surface lowers albedo, increasing local temperatures, which induces more melting and thus reducing the albedo further, resulting in still more heating. === Small-scale effects === Albedo works on a smaller scale, too. In sunlight, dark clothes absorb more heat and light-coloured clothes reflect it better, thus allowing some control over body temperature by exploiting the albedo effect of the colour of external clothing. === Solar photovoltaic effects === Albedo can affect the electrical energy output of solar photovoltaic devices. For example, the effects of a spectrally responsive albedo are illustrated by the differences between the spectrally weighted albedo of solar photovoltaic technology based on hydrogenated amorphous silicon (a-Si:H) and crystalline silicon (c-Si)-based compared to traditional spectral-integrated albedo predictions. Research showed impacts of over 10%. More recently, the analysis was extended to the effects of spectral bias due to the specular reflectivity of 22 commonly occurring surface materials (both human-made and natural) and analyzes the albedo effects on the performance of seven photovoltaic materials covering three common photovoltaic system topologies: industrial (solar farms), commercial flat rooftops and residential pitched-roof applications. === Trees === Because forests generally have a low albedo, (the majority of the ultraviolet and visible spectrum is absorbed through photosynthesis), some scientists have suggested that greater heat absorption by trees could offset some of the carbon benefits of afforestation (or offset the negative climate impacts of deforestation). In the case of evergreen forests with seasonal snow cover albedo reduction may be great enough for deforestation to cause a net cooling effect. Trees also impact climate in extremely complicated ways through evapotranspiration. The water vapor causes cooling on the land surface, causes heating where it condenses, acts a strong greenhouse gas, and can increase albedo when it condenses into clouds Scientists generally treat evapotranspiration as a net cooling impact, and the net climate impact of albedo and evapotranspiration changes from deforestation depends greatly on local climate In seasonally snow-covered zones, winter albedos of treeless areas are 10% to 50% higher than nearby forested areas because snow does not cover the trees as readily. Deciduous trees have an albedo value of about 0.15 to 0.18 whereas coniferous trees have a value of about 0.09 to 0.15. Studies by the Hadley Centre have investigated the relative (generally warming) effect of albedo change and (cooling) effect of carbon sequestration on planting forests. They found that new forests in tropical and midlatitude areas tended to cool; new forests in high latitudes (e.g. Siberia) were neutral or perhaps warming. === Snow === Snow albedo is highly variable, ranging from as high as 0.9 for freshly fallen snow, to about 0.4 for melting snow, and as low as 0.2 for dirty snow. Over Antarctica they average a little more than 0.8. If a marginally snow-covered area warms, snow tends to melt, lowering the albedo, and hence leading to more snowmelt because more radiation is being absorbed by the snowpack (the ice–albedo positive feedback). Cryoconite, powdery windblown dust containing soot, sometimes reduces albedo on glaciers and ice sheets. Hence, small errors in albedo can lead to large errors in energy estimates, which is why it is important to measure the albedo of snow-covered areas through remote sensing techniques rather than applying a single value over broad regions. === Water === Water reflects light very differently from typical terrestrial materials. The reflectivity of a water surface is calculated using the Fresnel equations (see graph). At the scale of the wavelength of light even wavy water is always smooth so the light is reflected in a locally specular manner (not diffusely). The glint of light off water is a commonplace effect of this. At small angles of incident light, waviness results in reduced reflectivity because of the steepness of the reflectivity-vs.-incident-angle curve and a locally increased average incident angle. Although the reflectivity of water is very low at low and medium angles of incident light, it becomes very high at high angles of incident light such as those that occur on the illuminated side of Earth near the terminator (early morning, late afternoon, and near the poles). However, as mentioned above, waviness causes an appreciable reduction. Because light specularly reflected from water does not usually reach the viewer, water is usually considered to have a very low albedo in spite of its high reflectivity at high angles of incident light. Note that white caps on waves look white (and have high albedo) because the water is foamed up, so there are many superimposed bubble surfaces which reflect, adding up their reflectivities. Fresh 'black' ice exhibits Fresnel reflection. === Clouds === Cloud albedo has substantial influence over atmospheric temperatures. Different types of clouds exhibit different reflectivity, theoretically ranging in albedo from a minimum of near 0 to a maximum approaching 0.8. "On any given day, about half of Earth is covered by clouds, which reflect more sunlight than land and water. Clouds keep Earth cool by reflecting sunlight, but they can also serve as blankets to trap warmth." Albedo and climate in some areas are affected by artificial clouds, such as those created by the contrails of heavy commercial airliner traffic. A study following the burning of the Kuwaiti oil fields during Iraqi occupation showed that temperatures under the burning oil fires were as much as 10 °C colder than temperatures several miles away under clear skies. === Aerosol effects === Aerosols (very fine particles/droplets in the atmosphere) have both direct and indirect effects on Earth's radiative balance. The direct (albedo) effect is generally to cool the planet; the indirect effect (the particles act as cloud condensation nuclei and thereby change cloud properties) is less certain. As per the effects are: * Aerosol direct effect. Aerosols directly scatter and absorb radiation. The scattering of radiation causes atmospheric cooling, whereas absorption can cause atmospheric warming. * Aerosol indirect effect. Aerosols modify the properties of clouds through a subset of the aerosol population called cloud condensation nuclei. Increased nuclei concentrations lead to increased cloud droplet number concentrations, which in turn leads to increased cloud albedo, increased light scattering and radiative cooling (first indirect effect), but also leads to reduced precipitation efficiency and increased lifetime of the cloud (second indirect effect). === Black carbon === Another albedo-related effect on the climate is from black carbon particles. The size of this effect is difficult to quantify: the Intergovernmental Panel on Climate Change estimates that the global mean radiative forcing for black carbon aerosols from fossil fuels is +0.2 W m−2, with a range +0.1 to +0.4 W m−2. Black carbon is a bigger cause of the melting of the polar ice cap in the Arctic than carbon dioxide due to its effect on the albedo. === Human activities === Human activities (e.g. deforestation, farming, and urbanization) change the albedo of various areas around the globe. However, quantification of this effect on the global scale is difficult. == Other types of albedo == Single-scattering albedo is used to define scattering of electromagnetic waves on small particles. It depends on properties of the material (refractive index); the size of the particle or particles; and the wavelength of the incoming radiation.

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An American in Paris

An American in Paris is a jazz-influenced symphonic poem by the American composer George Gershwin, written in 1928. Inspired by the time Gershwin had spent in Paris, it evokes the sights and energy of the French capital in the 1920s and is one of his best-known compositions. Gershwin composed An American in Paris on commission from the conductor Walter Damrosch. He scored the piece for the standard instruments of the symphony orchestra plus celesta, saxophones, and automobile horns. He brought back some Parisian taxi horns for the New York premiere of the composition, which took place on December 13, 1928 in Carnegie Hall, with Damrosch conducting the New York Philharmonic. Gershwin completed the orchestration on November 18, less than four weeks before the work's premiere. Gershwin collaborated on the original program notes with the critic and composer Deems Taylor, noting that: "My purpose here is to portray the impression of an American visitor in Paris as he strolls about the city and listens to various street noises and absorbs the French atmosphere." When the tone poem moves into the blues, "our American friend ... has succumbed to a spasm of homesickness." But, "nostalgia is not a fatal disease." The American visitor "once again is an alert spectator of Parisian life" and "the street noises and French atmosphere are triumphant." == Background == Maurice Ravel met Gershwin in New York during Ravel's tour of the United States. In that meeting, Gershwin asked Ravel to be his teacher, to which Ravel responded that it was better to be a first-rate Gershwin than a second-rate Ravel. Instead, Ravel recommended that Gershwin see Nadia Boulanger in Paris. Ravel's high praise of Gershwin in an introductory letter to Boulanger caused Gershwin to seriously consider taking time to study abroad in Paris. Gershwin arrived in Paris in March 1928. Paris at this time hosted many expatriate writers: among them Ezra Pound, W. B. Yeats, Ernest Hemingway; and artist Pablo Picasso. Gershwin met with Boulanger and at her request he played ten minutes of his music. Boulanger replied that she had nothing to teach him. This did not set Gershwin back, as his real intent abroad was to complete a new work based on Paris and perhaps a second rhapsody for piano and orchestra to follow his Rhapsody in Blue. == Composition == Gershwin based An American in Paris on a melodic fragment called "Very Parisienne", written in 1926 on his first visit to Paris as a gift to his hosts, Robert and Mabel Schirmer. He described the piece as a "rhapsodic ballet" because it was written freely and is more modern than his previous works. Gershwin explained in Musical America, "My purpose here is to portray the impressions of an American visitor in Paris as he strolls about the city, listens to the various street noises, and absorbs the French atmosphere." The piece is structured into five sections, which culminate in a loose ABA format. Gershwin's first A episode introduces the two main "walking" themes in the "Allegretto grazioso" and develops a third theme in the "Subito con brio". The style of this A section is written in the typical French style of composers Claude Debussy and Les Six. This A section featured duple meter, singsong rhythms, and diatonic melodies with the sounds of oboe, English horn, and taxi horns. The B section's "Andante ma con ritmo deciso" introduces the American Blues and spasms of homesickness. The "Allegro" that follows continues to express homesickness in a faster twelve-bar blues. In the B section, Gershwin uses common time, syncopated rhythms, and bluesy melodies with the sounds of trumpet, saxophone, and snare drum. "Moderato con grazia" is the last A section that returns to the themes set in A. After recapitulating the "walking" themes, Gershwin overlays the slow blues theme from section B in the final “Grandioso.” == Instrumentation == An American in Paris is scored for 3 flutes (3rd doubling on piccolo), 2 oboes, English horn, 2 clarinets in B flat, bass clarinet in B flat, 2 bassoons, 4 horns in F, 3 trumpets in B flat, 3 trombones, tuba, timpani, snare drum, bass drum, triangle, wood block, cymbals, low and high tom-toms, xylophone, glockenspiel, celesta, 4 taxi horns labeled as A, B, C and D, alto saxophone/soprano saxophone, tenor saxophone/soprano saxophone/alto saxophone, baritone saxophone/soprano saxophone/alto saxophone, and strings. The revised edition by F. Campbell-Watson calls for three saxophones, alto, tenor and baritone. In this arrangement the soprano and alto doublings have been rewritten to avoid changing instruments. William Daly arranged the score for piano solo which was published by New World Music in 1929. == Response == Gershwin did not particularly like Walter Damrosch's interpretation at the world premiere of An American in Paris. He stated that Damrosch's sluggish, dragging tempo caused him to walk out of the hall during a matinee performance of this work. The audience, according to Edward Cushing, responded with "a demonstration of enthusiasm impressively genuine in contrast to the conventional applause which new music, good and bad, ordinarily arouses." Critics believed that An American in Paris was better crafted than his lukewarm Concerto in F. Some did not think it belonged in a program with classical composers César Franck, Richard Wagner, or Guillaume Lekeu on its premiere. Gershwin responded to the critics, "It's not a Beethoven Symphony, you know... It's a humorous piece, nothing solemn about it. It's not intended to draw tears. If it pleases symphony audiences as a light, jolly piece, a series of impressions musically expressed, it succeeds." == Preservation status == On September 22, 2013, it was announced that a musicological critical edition of the full orchestral score will be eventually released. The Gershwin family, working in conjunction with the Library of Congress and the University of Michigan, are working to make scores available to the public that represent Gershwin's true intent. It is unknown if the critical score will include the material Gershwin later deleted from the work (such as the restatement of the blues theme after the faster 12 bar blues section), or if the score will document changes in the orchestration during Gershwin's composition process. The score to An American in Paris is currently scheduled to be issued first in a series of scores to be released. The project may take 30 to 40 years to complete. The first edition will probably be published by 2023. == Recordings == An American in Paris has been frequently recorded. The first recording was made for RCA Victor in 1929 with Nathaniel Shilkret conducting the Victor Symphony Orchestra, drawn from members of the Philadelphia Orchestra. Gershwin was on hand to "supervise" the recording; however, Shilkret was reported to be in charge and eventually asked the composer to leave the recording studio. Then, a little later, Shilkret discovered there was no one to play the brief celesta solo during the slow section, so he hastily asked Gershwin if he might play the solo; Gershwin said he could and so he briefly participated in the actual recording. The radio broadcast of the September 8, 1937 Hollywood Bowl George Gershwin Memorial Concert, in which An American in Paris, also conducted by Shilkret, was second on the program, was recorded and was released in 1998 in a two-CD set. Arthur Fiedler and the Boston Pops Orchestra recorded the work for RCA Victor, including one of the first stereo recordings of the music. In 1945, Arturo Toscanini and the NBC Symphony Orchestra recorded the music in Carnegie Hall, one of the few commercial recordings Toscanini made of music by an American composer. The Seattle Symphony also recorded a version in the 1980s of Gershwin's original score, before he made numerous edits resulting in the score as we hear it today. == Use in film == In 1951, MGM released the musical An American in Paris, featuring Gene Kelly and Leslie Caron. Winning the 1951 Best Picture Oscar and numerous other awards, the film was directed by Vincente Minnelli, featured many tunes of Gershwin, and concluded with an extensive, elaborate dance sequence built around the An American in Paris symphonic poem (arranged for the film by Johnny Green), costing $500,000. A part of the symphonic composition is also featured in As Good as It Gets, released in 1997.

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Achilles

In Greek mythology, Achilles (; , Akhilleus, ) was a Greek hero of the Trojan War and the central character and greatest warrior of Homer's Iliad. His mother was the nymph Thetis, and his father, Peleus, was the king of the Myrmidons. Achilles’ most notable feat during the Trojan War was the slaying of the Trojan hero Hector outside the gates of Troy. Although the death of Achilles is not presented in the Iliad, other sources concur that he was killed near the end of the Trojan War by Paris, who shot him in the heel with an arrow. Later legends (beginning with a poem by Statius in the 1st century AD) state that Achilles was invulnerable in all of his body except for his heel. Because of his death from a small wound in the heel, the term Achilles' heel has come to mean a person's point of weakness. == Etymology == Achilles' name can be analyzed as a combination of (akhos) "grief" and (laos) "a people, tribe, nation." In other words, Achilles is an embodiment of the grief of the people, grief being a theme raised numerous times in the Iliad (frequently by Achilles). Achilles' role as the hero of grief forms an ironic juxtaposition with the conventional view of Achilles as the hero of κλέος kleos ("glory", usually glory in war). Laos has been construed by Gregory Nagy, following Leonard Palmer, to mean "a corps of soldiers", a muster. With this derivation, the name would have a double meaning in the poem: When the hero is functioning rightly, his men bring grief to the enemy, but when wrongly, his men get the grief of war. The poem is in part about the misdirection of anger on the part of leadership. R. S. P. Beekes has suggested a Pre-Greek origin of the name. The name Achilleus was a common and attested name among the Greeks soon after the 7th century BC. It was also turned into the female form Ἀχιλλεία (Achilleía) attested in Attica in the 4th century BC (IG II² 1617) and, in the form Achillia, on a stele in Halicarnassus as the name of a female gladiator fighting an "Amazon". == Birth == Achilles was the son of the Nereid Thetis and Peleus, the king of the Myrmidons. Zeus and Poseidon had been rivals for the hand of Thetis until Prometheus, the fore-thinker, warned Zeus of a prophecy that Thetis would bear a son greater than his father. For this reason, the two gods withdrew their pursuit, and had her wed Peleus. There is a tale which offers an alternative version of these events: in Argonautica (iv.760) Zeus' sister and wife Hera alludes to Thetis' chaste resistance to the advances of Zeus, that Thetis was so loyal to Hera's marriage bond that she coolly rejected him. Thetis, although a daughter of the sea-god Nereus, was also brought up by Hera, further explaining her resistance to the advances of Zeus. According to the Achilleid, written by Statius in the 1st century AD, and to no surviving previous sources, when Achilles was born Thetis tried to make him immortal, by dipping him in the river Styx. However, he was left vulnerable at the part of the body by which she held him, his heel (see Achilles heel, Achilles' tendon). It is not clear if this version of events was known earlier. In another version of this story, Thetis anointed the boy in ambrosia and put him on top of a fire, to burn away the mortal parts of his body. She was interrupted by Peleus and abandoned both father and son in a rage. However, none of the sources before Statius makes any reference to this general invulnerability. To the contrary, in the Iliad Homer mentions Achilles being wounded: in Book 21 the Paeonian hero Asteropaeus, son of Pelagon, challenged Achilles by the river Scamander. He cast two spears at once, one grazed Achilles' elbow, "drawing a spurt of blood". Also, in the fragmentary poems of the Epic Cycle in which we can find description of the hero's death, Cypria (unknown author), Aithiopis by Arctinus of Miletus, Little Iliad by Lesche of Mytilene, Iliou persis by Arctinus of Miletus, there is no trace of any reference to his general invulnerability or his famous weakness (heel); in the later vase paintings presenting Achilles' death, the arrow (or in many cases, arrows) hit his body. Peleus entrusted Achilles to Chiron the Centaur, on Mt. Pelion, to be reared. == Achilles in the Trojan War == The first two lines of the Iliad read: : : :Sing, Goddess, of the rage of Peleus' son Achilles, :the accursed rage that brought great suffering to the Achaeans. Achilles' consuming rage is at times wavering, but at other times he cannot be cooled. The humanization of Achilles by the events of the war is an important theme of the narrative. According to the Iliad, Achilles arrived at Troy with 50 ships, each carrying 50 Myrmidons (Book 2). He appointed five leaders (each leader commanding 500 Myrmidons): Menesthius, Eudorus, Peisander, Phoenix and Alcimedon (Book 16). === Telephus === When the Greeks left for the Trojan War, they accidentally stopped in Mysia, ruled by King Telephus. In the resulting battle, Achilles gave Telephus a wound that would not heal; Telephus consulted an oracle, who stated that "he that wounded shall heal". Guided by the oracle, he arrived at Argos, where Achilles healed him in order that he might become their guide for the voyage to Troy. According to other reports in Euripides' lost play about Telephus, he went to Aulis pretending to be a beggar and asked Achilles to heal his wound. Achilles refused, claiming to have no medical knowledge. Alternatively, Telephus held Orestes for ransom, the ransom being Achilles' aid in healing the wound. Odysseus reasoned that the spear had inflicted the wound; therefore, the spear must be able to heal it. Pieces of the spear were scraped off onto the wound and Telephus was healed. === Troilus === According to the Cypria (the part of the Epic Cycle that tells the events of the Trojan War before Achilles' Wrath), when the Achaeans desired to return home, they were restrained by Achilles, who afterwards attacked the cattle of Aeneas, sacked neighboring cities and killed Troilus. In Dares Phrygius' Account of the Destruction of Troy, the Latin summary through which the story of Achilles was transmitted to medieval Europe, Troilus was a young Trojan prince, the youngest of King Priam's (or sometimes Apollo) and Hecuba's five legitimate sons. Despite his youth, he was one of the main Trojan war leaders. Prophecies linked Troilus' fate to that of Troy and so he was ambushed in an attempt to capture him. Yet Achilles, struck by the beauty of both Troilus and his sister Polyxena, and overcome with lust, directed his sexual attentions on the youth – who refusing to yield found instead himself decapitated upon an altar-omphalos of Apollo. Later versions of the story suggested Troilus was accidentally killed by Achilles in an over-ardent lovers' embrace. In this version of the myth, Achilles' death therefore came in retribution for this sacrilege. Ancient writers treated Troilus as the epitome of a dead child mourned by his parents. Had Troilus lived to adulthood, the First Vatican Mythographer claimed, Troy would have been invincible. === Achilles in the ''Iliad'' === Homer's Iliad is the most famous narrative of Achilles' deeds in the Trojan War. Achilles' wrath is the central theme of the poem. The Homeric epic only covers a few weeks of the war, and does not narrate Achilles' death. It begins with Achilles' withdrawal from battle after he is dishonored by Agamemnon, the commander of the Achaean forces. Agamemnon had taken a woman named Chryseis as his slave. Her father Chryses, a priest of Apollo, begs Agamemnon to return her to him. Agamemnon refuses and Apollo sends a plague amongst the Greeks. The prophet Calchas correctly determines the source of the troubles but will not speak unless Achilles vows to protect him. Achilles does so and Calchas declares Chryseis must be returned to her father. Agamemnon consents, but then commands that Achilles' battle prize Briseis be brought to him to replace Chryseis. Angry at the dishonor of having his plunder and glory taken away (and as he says later, because he loved Briseis), with the urging of his mother Thetis, Achilles refuses to fight or lead his troops alongside the other Greek forces. At this same time, burning with rage over Agamemnon's theft, Achilles prays to Thetis to convince Zeus to help the Trojans gain ground in the war, so that he may regain his honor. As the battle turns against the Greeks, thanks to the influence of Zeus, Nestor declares that the Trojans are winning because Agamemnon has angered Achilles, and urges the king to appease the warrior. Agamemnon agrees and sent Odysseus and two other chieftains, Ajax and Phoenix, to Achilles with the offer of the return of Briseis and other gifts. Achilles rejects all Agamemnon offers him, and simply urges the Greeks to sail home as he was planning to do. The Trojans, led by Hector, subsequently pushed the Greek army back toward the beaches and assaulted the Greek ships. With the Greek forces on the verge of absolute destruction, Patroclus leads the Myrmidons into battle wearing Achilles' armor, though Achilles remains at his camp. Patroclus succeeds in pushing the Trojans back from the beaches, but is killed by Hector before he can lead a proper assault on the city of Troy. After receiving the news of the death of Patroclus from Antilochus, the son of Nestor, Achilles grieves over his beloved companion's death and holds many funeral games in his honor. His mother Thetis comes to comfort the distraught Achilles. She persuades Hephaestus to make new armor for him, in place of the armor that Patroclus had been wearing which was taken by Hector. The new armor includes the Shield of Achilles, described in great detail in the poem. Enraged over the death of Patroclus, Achilles ends his refusal to fight and takes the field killing many men in his rage but always seeking out Hector. Achilles even engages in battle with the river god Scamander who becomes angry that Achilles is choking his waters with all the men he has killed. The god tries to drown Achilles but is stopped by Hera and Hephaestus. Zeus himself takes note of Achilles' rage and sends the gods to restrain him so that he will not go on to sack Troy itself before the time allotted for its destruction, seeming to show that the unhindered rage of Achilles can defy fate itself. Finally, Achilles finds his prey. Achilles chases Hector around the wall of Troy three times before Athena, in the form of Hector's favorite and dearest brother, Deiphobus, persuades Hector to stop running and fight Achilles face to face. After Hector realizes the trick, he knows the battle is inevitable. Wanting to go down fighting, he charges at Achilles with his only weapon, his sword, but misses. Accepting his fate, Hector begs Achilles, not to spare his life, but to treat his body with respect after killing him. Achilles tells Hector it is hopeless to expect that of him, declaring that "my rage, my fury would drive me now to hack your flesh away and eat you raw – such agonies you have caused me". Achilles then kills Hector and drags his corpse by its heels behind his chariot during Patroclus' funeral games. With the assistance of the god Hermes, Hector's father, Priam, goes to Achilles' tent to plead with Achilles for the return of Hector's body so that he can be buried. Achilles relents and promises a truce for the duration of the funeral. The poem ends with a description of Hector's funeral, with the doom of Troy and Achilles himself still to come. === Penthesilea === Achilles, after his temporary truce with Priam, fought and killed the Amazonian warrior queen Penthesilea, but later grieved over her death. At first, he was so distracted by her beauty, he did not fight as intensely as usual. Once he realized that his distraction was endangering his life, he refocused and killed her. === Memnon, and the fall of Achilles === Following the death of Patroclus, Achilles' closest companion was Nestor's son Antilochus. When Memnon, king of Ethiopia slew Antilochus, Achilles once more obtained revenge on the battlefield, killing Memnon. The fight between Achilles and Memnon over Antilochus echoes that of Achilles and Hector over Patroclus, except that Memnon (unlike Hector) was also the son of a goddess. Many Homeric scholars argued that episode inspired many details in the Iliad's description of the death of Patroclus and Achilles' reaction to it. The episode then formed the basis of the cyclic epic Aethiopis, which was composed after the Iliad, possibly in the 7th century B.C. The Aethiopis is now lost, except for scattered fragments quoted by later authors. The death of Achilles, as predicted by Hector with his dying breath, was brought about by Paris with an arrow (to the heel according to Statius). In some versions, the god Apollo guided Paris' arrow. Some retellings also state that Achilles was scaling the gates of Troy and was hit with a poisoned arrow. All of these versions deny Paris any sort of valor, owing to the common conception that Paris was a coward and not the man his brother Hector was, and Achilles remained undefeated on the battlefield. His bones were mingled with those of Patroclus, and funeral games were held. He was represented in the Aethiopis as living after his death in the island of Leuke at the mouth of the river Danube. Another version of Achilles' death is that he fell deeply in love with one of the Trojan princesses, Polyxena. Achilles asks Priam for Polyxena's hand in marriage. Priam is willing because it would mean the end of the war and an alliance with the world's greatest warrior. But while Priam is overseeing the private marriage of Polyxena and Achilles, Paris, who would have to give up Helen if Achilles married his sister, hides in the bushes and shoots Achilles with a divine arrow, killing him. Achilles was cremated and his ashes buried in the same urn as those of Patroclus. Paris was later killed by Philoctetes using the enormous bow of Heracles. === Fate of Achilles' armor === Achilles' armor was the object of a feud between Odysseus and Telamonian Ajax (Ajax the greater). They competed for it by giving speeches on why they were the bravest after Achilles to their Trojan prisoners, who after considering both men came to a consensus in favor of Odysseus. Furious, Ajax cursed Odysseus, which earned the ire of Athena. Athena temporarily made Ajax so mad with grief and anguish that he began killing sheep, thinking them his comrades. After a while, when Athena lifted his madness and Ajax realized that he had actually been killing sheep, Ajax was left so ashamed that he committed suicide. Odysseus eventually gave the armor to Neoptolemus, the son of Achilles. A relic claimed to be Achilles' bronze-headed spear was for centuries preserved in the temple of Athena on the acropolis of Phaselis, Lycia, a port on the Pamphylian Gulf. The city was visited in 333 BC by Alexander the Great, who envisioned himself as the new Achilles and carried the Iliad with him, but his court biographers do not mention the spear. But it was being shown in the time of Pausanias in the 2nd century AD. == Achilles and Patroclus == The exact nature of Achilles' relationship with Patroclus has been a subject of dispute in both the classical period and modern times. In the Iliad, it appears to be the model of a deep and loyal friendship. Homer does not suggest that Achilles and his close friend Patroclus were lovers. Despite there being no direct evidence in the text of the Iliad that Achilles and Patroclus were lovers, this theory was expressed by some later authors. Commentators from classical antiquity to the present have often interpreted the relationship through the lens of their own cultures. In 5th-century BC Athens, the intense bond was often viewed in light of the Greek custom of paiderasteia. In Plato's Symposium, the participants in a dialogue about love assume that Achilles and Patroclus were a couple; Phaedrus argues that Achilles was the younger and more beautiful one so he was the beloved and Patroclus was the lover. But ancient Greek had no words to distinguish heterosexual and homosexual, and it was assumed that a man could both desire handsome young men and have sex with women. == Worship of Achilles in antiquity == There was an archaic heroic cult of Achilles on the White Island, Leuce, in the Black Sea off the modern coasts of Romania and Ukraine, with a temple and an oracle which survived into the Roman period. In the lost epic Aithiopis, a continuation of the Iliad attributed to Arktinus of Miletos, Achilles’ mother Thetis returned to mourn him and removed his ashes from the pyre and took them to Leuce at the mouths of the Danube. There the Achaeans raised a tumulus for him and celebrated funeral games. Pliny's Natural History mentions a tumulus that is no longer evident (Insula Akchillis tumulo eius viri clara), on the island consecrated to him, located at a distance of fifty Roman miles from Peuce by the Danube Delta, and the temple there. Pausanias has been told that the island is "covered with forests and full of animals, some wild, some tame. In this island there is also Achilles’ temple and his statue". Ruins of a square temple 30 meters to a side, possibly that dedicated to Achilles, were discovered by Captain Kritzikly in 1823, but there has been no modern archeological work done on the island. Pomponius Mela tells that Achilles is buried in the island named Achillea, between Boristhene and Ister. The Greek geographer Dionysius Periegetus of Bithynia, who lived at the time of Domitian, writes that the island was called Leuce "because the wild animals which live there are white. It is said that there, in Leuce island, reside the souls of Achilles and other heroes, and that they wander through the uninhabited valleys of this island; this is how Jove rewarded the men who had distinguished themselves through their virtues, because through virtue they had acquired everlasting honor". The Periplus of the Euxine Sea gives the following details: "It is said that the goddess Thetis raised this island from the sea, for her son Achilles, who dwells there. Here is his temple and his statue, an archaic work. This island is not inhabited, and goats graze on it, not many, which the people who happen to arrive here with their ships, sacrifice to Achilles. In this temple are also deposited a great many holy gifts, craters, rings and precious stones, offered to Achilles in gratitude. One can still read inscriptions in Greek and Latin, in which Achilles is praised and celebrated. Some of these are worded in Patroclus’ honor, because those who wish to be favored by Achilles, honor Patroclus at the same time. There are also in this island countless numbers of sea birds, which look after Achilles’ temple. Every morning they fly out to sea, wet their wings with water, and return quickly to the temple and sprinkle it. And after they finish the sprinkling, they clean the hearth of the temple with their wings. Other people say still more, that some of the men who reach this island, come here intentionally. They bring animals in their ships, destined to be sacrificed. Some of these animals they slaughter, others they set free on the island, in Achilles’ honor. But there are others, who are forced to come to this island by sea storms. As they have no sacrificial animals, but wish to get them from the god of the island himself, they consult Achilles’ oracle. They ask permission to slaughter the victims chosen from among the animals that graze freely on the island, and to deposit in exchange the price which they consider fair. But in case the oracle denies them permission, because there is an oracle here, they add something to the price offered, and if the oracle refuses again, they add something more, until at last, the oracle agrees that the price is sufficient. And then the victim doesn’t run away any more, but waits willingly to be caught. So, there is a great quantity of silver there, consecrated to the hero, as price for the sacrificial victims. To some of the people who come to this island, Achilles appears in dreams, to others he would appear even during their navigation, if they were not too far away, and would instruct them as to which part of the island they would better anchor their ships". (quoted in Densuşianu) The heroic cult of Achilles on Leuce island was widespread in antiquity, not only along the sea lanes of the Pontic Sea but also in maritime cities whose economic interests were tightly connected to the riches of the Black Sea. Achilles from Leuce island was venerated as Pontarches the lord and master of the Pontic Sea, the protector of sailors and navigation. Sailors went out of their way to offer sacrifice. To Achilles of Leuce were dedicated a number of important commercial port cities of the Greek waters: Achilleion in Messenia (Stephanus Byzantinus), Achilleios in Laconia (Pausanias, III.25,4) Nicolae Densuşianu (Densuşianu 1913) even though he recognized Achilles in the name of Aquileia and in the north arm of the Danube delta, the arm of Chilia ("Achileii"), though his conclusion, that Leuce had sovereign rights over Pontos, evokes modern rather than archaic sea-law." Leuce had also a reputation as a place of healing. Pausanias (III.19,13) reports that the Delphic Pythia sent a lord of Croton to be cured of a chest wound. Ammianus Marcellinus (XXII.8) attributes the healing to waters (aquae) on the island. === Worship of Achilles in modern times: The Achilleion in Corfu === In the region of Gastouri (Γαστούρι) to the south of the city of Corfu Greece, Empress of Austria Elisabeth of Bavaria also known as Sissi built in 1890 a summer palace with Achilles as its central theme and it is a monument to platonic romanticism. The palace, naturally, was named after Achilles: Achilleion (Αχίλλειον). This elegant structure abounds with paintings and statues of Achilles both in the main hall and in the lavish gardens depicting the heroic and tragic scenes of the Trojan war. == Other stories == Some post-Homeric sources claim that in order to keep Achilles safe from the war, Thetis (or, in some versions, Peleus) hides the young man at the court of Lycomedes, king of Skyros. There, Achilles is disguised as a girl and lives among Lycomedes' daughters, perhaps under the name "Pyrrha" (the red-haired girl). With Lycomedes' daughter Deidamia, whom in the account of Statius he rapes, Achilles there fathers a son, Neoptolemus (also called Pyrrhus, after his father's possible alias). According to this story, Odysseus learns from the prophet Calchas that the Achaeans would be unable to capture Troy without Achilles' aid. Odysseus goes to Skyros in the guise of a peddler selling women's clothes and jewelry and places a shield and spear among his goods. When Achilles instantly takes up the spear, Odysseus sees through his disguise and convinces him to join the Greek campaign. In another version of the story, Odysseus arranges for a trumpet alarm to be sounded while he was with Lycomedes' women; while the women flee in panic, Achilles prepares to defend the court, thus giving his identity away. In book 11 of Homer's Odyssey, Odysseus sails to the underworld and converses with the shades. One of these is Achilles, who when greeted as "blessed in life, blessed in death", responds that he would rather be a slave to the worst of masters than be king of all the dead. But Achilles then asks Odysseus of his son's exploits in the Trojan war, and when Odysseus tells of Neoptolemus' heroic actions, Achilles is filled with satisfaction. This leaves the reader with an ambiguous understanding of how Achilles felt about the heroic life. Achilles was worshipped as a sea-god in many of the Greek colonies on the Black Sea, the location of the mythical "White Island" which he was said to inhabit after his death, together with many other heroes. The kings of the Epirus claimed to be descended from Achilles through his son, Neoptolemus. Alexander the Great, son of the Epirote princess Olympias, could therefore also claim this descent, and in many ways strove to be like his great ancestor. He is said to have visited the tomb of Achilles at Achilleion while passing Troy. In AD 216 the Roman Emperor Caracalla, while on his way to war against Parthia, emulated Alexander by holding games around Achilles' tumulus. Achilles fought and killed the Amazon Helene. Some also said he married Medea, and that after both their deaths they were united in the Elysian Fields of Hades – as Hera promised Thetis in Apollonius' Argonautica. In some versions of the myth, Achilles has a relationship with his captive Briseis. == Achilles in Greek tragedy == The Greek tragedian Aeschylus wrote a trilogy of plays about Achilles, given the title Achilleis by modern scholars. The tragedies relate the deeds of Achilles during the Trojan War, including his defeat of Hector and eventual death when an arrow shot by Paris and guided by Apollo punctures his heel. Extant fragments of the Achilleis and other Aeschylean fragments have been assembled to produce a workable modern play. The first part of the Achilleis trilogy, The Myrmidons, focused on the relationship between Achilles and chorus, who represent the Achaean army and try to convince Achilles to give up his quarrel with Agamemnon; only a few lines survive today. In Plato's Symposium, Phaedrus points out that Aeschylus portrayed Achilles as the lover and Patroclus as the beloved; Phaedrus argues that this is incorrect because Achilles, being the younger and more beautiful of the two, was the beloved, who loved his lover so much that he chose to die to revenge him. The tragedian Sophocles also wrote The Lovers of Achilles, a play with Achilles as the main character. Only a few fragments survive. Towards the end of the 5th century BC, a more negative view of Achilles emerges in Greek drama; Euripides refers to Achilles in a bitter or ironic tone in Hecuba, Electra, and Iphigenia in Aulis. == Achilles in Greek philosophy == The philosopher Zeno of Elea centered one of his paradoxes on an imaginary footrace between "swift-footed" Achilles and a tortoise, by which he attempted to show that Achilles could not catch up to a tortoise with a head start, and therefore that motion and change were impossible. As a student of the monist Parmenides and a member of the Eleatic school, Zeno believed time and motion to be illusions. == Achilles in Roman and medieval literature == The Romans, who traditionally traced their lineage to Troy, took a highly negative view of Achilles. Vergil refers to Achilles as a savage and a merciless butcher of men, while Horace portrays Achilles ruthlessly slaying women and children. Other writers, such as Catullus, Propertius, and Ovid, represent a second strand of disparagement, with an emphasis on Achilles' erotic career. This strand continues in Latin accounts of the Trojan War by writers such as Dictys Cretensis and Dares Phrygius and in Benoît de Sainte-Maure's Roman de Troie and Guido delle Colonne's Historia destructionis Troiae, which remained the most widely read and retold versions of the Matter of Troy until the 17th century. == Achilles in later art == * Achilles is portrayed as a former hero who has become lazy and devoted to the love of Patroclus, in William Shakespeare's Troilus and Cressida. * Achilles appears in Dante's Inferno. * Achilles is the subject of the poem Achilleïs, a fragment by Johann Wolfgang von Goethe. * Achilles is a major character in Madeline Miller's debut novel, The Song of Achilles (2011), which won the 2012 Orange Prize for Fiction. The novel explores the relationship between Patroclus and Achilles from boyhood to the fateful events of the Iliad. * Achilles is a central and playable character in KOEI's Warriors: Legends of Troy. * Achilles is mentioned in Tennyson's "Ulysses": "...we shall touch the happy isles and meet there the great Achilles whom we knew." * Achilles (Akhilles) is killed by a poisoned Kentaur arrow shot by Kassandra in Marion Zimmer Bradley's novel The Firebrand (1987): * Achilles is one of various 'narrators' in Colleen McCullough's novel The Song of Troy (1998). * Achilles is the main character in David Malouf's novel Ransom (2009). * The ghost of Achilles appears in Rick Riordan's The Last Olympian (2009). The role of Achilles has been played in film by: * Piero Lulli in Ulysses (1955) * Stanley Baker in Helen of Troy (1956) * Riley Ottenhof in Something about Zeus (1958) * Arturo Dominici in La Guerra di Troia (1962) * Gordon Mitchell in The Fury of Achilles (1962) * Steve Davislim in La Belle Hélène (TV, 1996) * Richard Trewett in the miniseries The Odyssey (TV, 1997) * Joe Montana in Helen of Troy (TV, 2003) * Brad Pitt in Troy (2004) Achilles has frequently been mentioned in music: * Achilles is a hardcore band. * "Achilles" is an oratorio by German composer Max Bruch (1885). * "Achilles, Agony & Ecstasy In Eight Parts", by Manowar (The Triumph of Steel, 1992). * Achilles Heel is an album by Pedro the Lion. * "Achilles Last Stand", by Led Zeppelin (Presence, 1976). * "Achilles' Revenge" is a song by Warlord. * "Achilles' Wrath" is a concert piece by Sean O'Loughlin. * Achilles is referred to in Bob Dylan's song "Temporary Like Achilles". * "Cry of Achilles" is the lead track off of Alter Bridge's fourth album, Fortress. == Namesakes == * The name of Achilles has been used for at least nine Royal Navy warships since 1744 - both as HMS Achilles and with the French spelling HMS Achille. A 60-gun ship of that name served at the Battle of Belleisle in 1761 while a 74-gun ship served at the Battle of Trafalgar. Other battle honours include Walcheren 1809. An armored cruiser of that name served in the Royal Navy during the First World War. * HMNZS Achilles was a Leander-class cruiser which served with the Royal New Zealand Navy in World War II. It became famous for its part in the Battle of the River Plate, alongside and . In addition to earning the battle honour 'River Plate', HMNZS Achilles also served at Guadalcanal 1942–43 and Okinawa in 1945. After returning to the Royal Navy, the ship was sold to the Indian Navy in 1948 but when she was scrapped parts of the ship were saved and preserved in New Zealand. * Capois La Mort, a slave who fought in the Haitian Revolution, was nicknamed the Black Achilles because of his heroic performance during the last battle against the French. * Prince Achileas-Andreas of Greece and Denmark, the grandson of the deposed Greek king, Constantine II. * The character Achilles in Ender's Shadow, by Orson Scott Card. Achilles shares his namesake's cunning mind and ruthless attitude. * In the Star Trek universe, the Achilles Class is an advanced type of Federation battleship brought into service at the outbreak of the Dominion War, though not seen in any of the canon Star Trek TV series. * Achilles armor and valour is included in Titan Quest and TQ Immortal Throne. * the 2005 video game Spartan Total Warrior features two campaign missions located in the fictional buried city of Troy, with the story arch for this segment of the game culminating in the discovery of the Tomb of Achilles and the acquisition of the Spear of Achilles.

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Actrius

Actrius (Catalan: Actresses) is a 1996 film directed by Ventura Pons. In the film, there are no male actors and the four leading actresses dubbed themselves in the Castilian version. == Synopsis == In order to prepare the role of an important old actress, a theatre student interviews three actresses who were her pupils: an international diva (Glòria Marc, played by Núria Espert), a television star (Assumpta Roca, played by Rosa Maria Sardà) and a dubbing director (Maria Caminal, played by Anna Lizaran).

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Animalia (book)

Animalia is an illustrated children's book by Graeme Base. It was originally published in 1986, followed by a tenth anniversary edition in 1996 and a 25th anniversary edition in 2012. Over three million copies have been sold. A special numbered and signed anniversary edition was also published in 1996 with an embossed gold jacket. == Synopsis == Animalia is an alliterative alphabet book and contains twenty-six illustrations, one for each letter of the alphabet. Each illustration features an animal from the animal kingdom (A is for alligator, B is for butterfly, etc.) along with a short poem utilizing the letter of the page for many of the words. The illustrations contain many other objects beginning with that letter that the reader can try to identify. As an additional challenge, the author has hidden a picture of himself as a child in every picture. == Related products == Penguin Books published an Animalia colouring book in 2008. H. N. Abrams also published a wall calendar colouring book version for children the same year. H. N. Abrams published The Animalia Wall Frieze, a fold-out over 26 feet in length, in which the author created new riddles for each letter. The Great American Puzzle Factory created a 300-piece jigsaw puzzle based on the book's cover. == Adaptations == A television series was also created, based on the book, which airs in the United States, Australia, Canada, the United Kingdom, Norway and Venezuela. It also airs on Minimax for the Czech Republic and Slovakia. And recently in Greece on the channel ET1. The Australian Children's Television Foundation released a teaching resource DVD-ROM in 2011 to accompany the TV series with teaching aids for classroom use. In 2010, The Base Factory and AppBooks released Animalia as an application for iPad and iPhone/iPod Touch. == Awards == Animalia won the Young Australian's Best Book Award in 1987 for Best Picture Story Book. The Children's Book Council of Australia designated Animalia a 1987 Picture Book of the Year: Honour Book. Kid's Own Australian Literature Awards named Animalia the 1988 Picture Book Winner.

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International Atomic Time

International Atomic Time (TAI, from the French name Temps atomique international) is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid. It is the basis for Coordinated Universal Time (UTC), which is used for civil timekeeping all over the Earth's surface, and for Terrestrial Time, which is used for astronomical calculations. Since 30 June 2012 when the last leap second was added, TAI has been exactly 35 seconds ahead of UTC. The 35 seconds results from the initial difference of 10 seconds at the start of 1972, plus 25 leap seconds in UTC since 1972. Time coordinates on the TAI scales are conventionally specified using traditional means of specifying days, carried over from non-uniform time standards based on the rotation of the Earth. Specifically, both Julian Dates and the Gregorian calendar are used. TAI in this form was synchronised with Universal Time at the beginning of 1958, and the two have drifted apart ever since, due to the changing motion of the Earth. == Operation == TAI as a time scale is a weighted average of the time kept by over 200 atomic clocks in over 50 national laboratories worldwide. The clocks are compared using GPS signals and two-way satellite time and frequency transfer. Due to the averaging it is far more stable than any clock would be alone (see signal averaging for a discussion). The majority of the clocks are caesium clocks; the definition of the SI second is written in terms of caesium. The participating institutions each broadcast, in real time, a frequency signal with timecodes, which is their estimate of TAI. Time codes are usually published in the form of UTC, which differs from TAI by a well-known integer number of seconds. These time scales are denoted in the form UTC(NPL) in the UTC form, where NPL in this case identifies the National Physical Laboratory, UK. The TAI form may be denoted TAI(NPL). The latter is not to be confused with TA(NPL), which denotes an independent atomic time scale, not synchronised to TAI or to anything else. The clocks at different institutions are regularly compared against each other. The International Bureau of Weights and Measures (BIPM, France), combines these measurements to retrospectively calculate the weighted average that forms the most stable time scale possible. This combined time scale is published monthly in Circular T, and is the canonical TAI. This time scale is expressed in the form of tables of differences UTC-UTC(k) (equivalent to TAI-TAI(k)) for each participating institution k. (The same circular also gives tables of TAI-TA(k), for the various unsynchronised atomic time scales.) Errors in publication may be corrected by issuing a revision of the faulty Circular T or by errata in a subsequent Circular T. Aside from this, once published in Circular T the TAI scale is not revised. In hindsight it is possible to discover errors in TAI, and to make better estimates of the true proper time scale. Doing so does not create another version of TAI; it is instead considered to be creating a better realisation of Terrestrial Time (TT). == History == Early atomic time scales consisted of quartz clocks with frequencies calibrated by a single atomic clock; the atomic clocks were not operated continuously. Atomic timekeeping services started experimentally in 1955, using the first caesium atomic clock at the National Physical Laboratory, UK (NPL). The "Greenwich Atomic" (GA) scale began in 1955 at the Royal Greenwich Observatory. The International Time Bureau (BIH) began a time scale, Tm or AM, in July 1955, using both local caesium clocks and comparisons to distant clocks using the phase of VLF radio signals. The United States Naval Observatory began the A.1 scale 13 September 1956, using an Atomichron commercial atomic clock, followed by the NBS-A scale at the National Bureau of Standards, Boulder, Colorado. Both the BIH scale and A.1 was defined by an epoch at the beginning of 1958: it was set to read Julian Date 2436204.5 (1 January 1958 00:00:00) at the corresponding UT2 instant. The procedures used by the BIH evolved, and the name for the time scale changed: "A3" in 1963 and "TA(BIH)" in 1969. This synchronisation was inevitably imperfect, depending as it did on the astronomical realisation of UT2. At the time, UT2 as published by various observatories differed by several hundredths of a second. In 1961, UTC began. UTC is a discontinuous time scale composed from segments that are linear transformations of atomic time, the discontinuities being arranged so that UTC approximated UT2 until the end of 1971, and UT1 thereafter. This was a compromise arrangement for a broadcast time scale: a linear transformation of the BIH's atomic time meant that the time scale was stable and internationally synchronised, while approximating UT1 means that tasks such as navigation which require a source of Universal Time continue to be well served by public time broadcasts. The SI second was defined in terms of the caesium atom in 1967, and in 1971 the name International Atomic Time (TAI) was assigned to a time scale based on SI seconds with no leap seconds. During this time, irregularities in the atomic time were detected and corrected. In 1967 it was suggested that nearby masses caused clocks to operate at different rates, but this was disproven in 1968. In the 1970s, it became clear that the clocks participating in TAI were ticking at different rates due to gravitational time dilation, and the combined TAI scale therefore corresponded to an average of the altitudes of the various clocks. Starting from Julian Date 2443144.5 (1 January 1977 00:00:00), corrections were applied to the output of all participating clocks, so that TAI would correspond to proper time at mean sea level (the geoid). Because the clocks had been on average well above sea level, this meant that TAI slowed down, by about 10−12. The former uncorrected time scale continues to be published, under the name EAL (Echelle Atomique Libre, meaning Free Atomic Scale). The instant that the gravitational correction started to be applied serves as the epoch for Barycentric Coordinate Time (TCB), Geocentric Coordinate Time (TCG), and Terrestrial Time (TT). All three of these time scales were defined to read JD 2443144.5003725 (1 January 1977 00:00:32.184) exactly at that instant. (The offset is to provide continuity with the older Ephemeris Time.) TAI was henceforth a realisation of TT, with the equation TT(TAI) = TAI + 32.184 s. The continued existence of TAI was questioned in a 2007 letter from the BIPM to the ITU-R which stated "In the case of a redefinition of UTC without leap seconds, the CCTF would consider discussing the possibility of suppressing TAI, as it would remain parallel to the continuous UTC."

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Alain Connes

Alain Connes (; born 1 April 1947) is a French mathematician, currently Professor at the Collège de France, IHÉS, The Ohio State University and Vanderbilt University. == Work == Alain Connes studies operator algebras. In his early work on von Neumann algebras in the 1970s, he succeeded in obtaining the almost complete classification of injective factors. Following this he made contributions in operator K-theory and index theory, which culminated in the Baum-Connes conjecture. He also introduced cyclic cohomology in the early 1980s as a first step in the study of noncommutative differential geometry. Connes has applied his work in areas of mathematics and theoretical physics, including number theory, differential geometry and particle physics. == Awards and honours == Connes was awarded the Fields Medal in 1982, the Crafoord Prize in 2001 and the gold medal of the CNRS in 2004. He is a member of the French Academy of Sciences and several foreign academies and societies, including the Danish Academy of Sciences, Norwegian Academy of Sciences, Russian Academy of Sciences, and US National Academy of Sciences. == Books == * Alain Connes and Matilde Marcolli: Noncommutative Geometry, Quantum Fields and Motives, Colloquium Publications, American Mathematical Society, 2007, ISBN 978-0821842102 * Alain Connes, Andre Lichnerowicz, Marcel Paul Schutzenberger, Jennifer Gage (translator): Triangle of Thought, American Mathematical Society, 2001, ISBN 978-0821826140 * Jean-Pierre Changeux, Alain Connes, M. B. DeBevoise (translator): Conversations on Mind, Matter, and Mathematics, Princeton University Press, 1998, ISBN 978-0691004051 * Alain Connes: Noncommutative Geometry, Academic Press, 1994, ISBN 978-0121858605

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Allan Dwan

Allan Dwan (3 April 1885 – 28 December 1981) was a pioneering Canadian-born American motion picture director, producer and screenwriter. == Early life == Born Joseph Aloysius Dwan in Toronto, Ontario, Canada, Dwan moved with his family to the United States when he was eight (8) years old, on April 15, 1893. At the University of Notre Dame, he trained as an engineer and began working for a lighting company in Chicago. However, he had a strong interest in the fledgling motion picture industry and when Essanay Studios offered him the opportunity to become a scriptwriter, he took the job. At that time, some of the East Coast movie makers began to spend winters in California where the climate allowed them to continue productions requiring warm weather. Soon, a number of movie companies worked there year-round and, in 1911, Dwan began working part-time in Hollywood. While still in New York, in 1917 he was the founding president of the East Coast chapter of the Motion Picture Directors Association. == Career == Dwan operated Flying A Studios in La Mesa, California from August 1911 to July 1912. Flying A was one of the first motion pictures studios in California history. On 12 August 2011, a plaque was unveiled on the Wolff building at Third Ave and La Mesa Bl commemorating Dwan and the Flying A Studios origins in La Mesa, California. After making a series of westerns and comedies, Dwan directed fellow Canadian-American Mary Pickford in several very successful movies as well as her husband, Douglas Fairbanks, notably in the acclaimed 1922 Robin Hood. Following the introduction of the talkies, in 1937 he directed child-star Shirley Temple in Heidi and Rebecca of Sunnybrook Farm the following year. Dwan helped launch the career of two other very successful Hollywood directors, Victor Fleming, who went on to direct The Wizard of Oz and Gone With the Wind, and Marshall Neilan, who became an actor, director, writer and producer. Over a long career spanning almost 50 years, Dwan directed over 400 motion pictures, many of them highly acclaimed, such as the 1949 box office smash, Sands of Iwo Jima. He directed his last movie in 1961. He died in Los Angeles at the age of ninety-six, and is interred in the San Fernando Mission Cemetery, Mission Hills, California. Allan Dwan has a star on the Hollywood Walk of Fame at 6263 Hollywood Boulevard.

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Astronomer

An astronomer is a scientist who studies celestial bodies such as black holes, moons, planets, stars, asteroids, comets, nebulae and galaxies, as well as Gamma-ray bursts and cosmic microwave background radiation. A related but distinct subject, cosmology, is concerned with studying the universe as a whole. An astronomer researches the world beyond earth. Historically, astronomy was more concerned with the classification and description of phenomena in the sky, while astrophysics attempted to explain these phenomena and the differences between them using physical laws. Today, that distinction has mostly disappeared and the terms "astronomer" and "astrophysicist" are interchangeable. Professional astronomers are highly educated individuals who typically have a PhD in physics or astronomy and are employed by research institutions or universities. They spend the majority of their time working on research, although they quite often have other duties such as teaching, building instruments, or aiding in the operation of an observatory. The number of professional astronomers in the United States is actually quite small. The American Astronomical Society, which is the major organization of professional astronomers in North America, has approximately 7,700 members. This number includes scientists from other fields such as physics, geology, and engineering, whose research interests are closely related to astronomy. The International Astronomical Union comprises almost 10,145 members from 70 different countries who are involved in astronomical research at the PhD level and beyond. While there is a relatively low number of professional astronomers, the field is popular among amateurs. Most cities have amateur astronomy clubs that meet on a regular basis and often host star parties. The Astronomical Society of the Pacific is the largest general astronomical society in the world, comprising both professional and amateur astronomers as well as educators from 70 different nations. Like any hobby, most people who think of themselves as amateur astronomers may devote a few hours a month to stargazing and reading the latest developments in research. However, amateurs span the range from so-called "armchair astronomers" to the very ambitious, who own science-grade telescopes and instruments with which they are able to make their own discoveries and assist professional astronomers in research. == Modern astronomers == Contrary to the classical image of an old astronomer peering through a telescope through the dark hours of the night, it is far more common to use a charge-coupled device camera to record a long, deep exposure, allowing a more sensitive image to be created because the light is added over time. Before CCDs, photographic plates were a common method of observation. Modern astronomers spend relatively little time at telescopes usually just a few weeks per year. Analysis of observed phenomena, along with making predictions as to the causes of what they observe, takes the majority of observational astronomers' time. Astronomers who serve as faculty spend much of their time teaching undergraduate and graduate classes. Most universities also have outreach programs including public telescope time and sometimes planetariums as a public service to encourage interest in the field.

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Agricultural science

Agricultural science is a broad multidisciplinary field of biology that encompasses the parts of exact, natural, economic and social sciences that are used in the practice and understanding of agriculture. (Veterinary science, but not animal science, is often excluded from the definition.) == Agriculture and agricultural science == The two terms are often confused. However, they cover different concepts: *Agriculture is the set of activities that transform the environment for the production of animals and plants for human use. Agriculture concerns techniques, including the application of agronomic research. *Agronomy is research and development related to studying and improving plant-based crops. Agricultural sciences include research and development on: * Production techniques (e.g., irrigation management, recommended nitrogen inputs) * Improving agricultural productivity in terms of quantity and quality (e.g., selection of drought-resistant crops and animals, development of new pesticides, yield-sensing technologies, simulation models of crop growth, in-vitro cell culture techniques) * Minimizing the effects of pests (weeds, insects, pathogens, nematodes) on crop or animal production systems. * Transformation of primary products into end-consumer products (e.g., production, preservation, and packaging of dairy products) * Prevention and correction of adverse environmental effects (e.g., soil degradation, waste management, bioremediation) * Theoretical production ecology, relating to crop production modeling * Traditional agricultural systems, sometimes termed subsistence agriculture, which feed most of the poorest people in the world. These systems are of interest as they sometimes retain a level of integration with natural ecological systems greater than that of industrial agriculture, which may be more sustainable than some modern agricultural systems. * Food production and demand on a global basis, with special attention paid to the major producers, such as China, India, Brazil, the USA and the EU. == Fertilizer == One of the most common yield reducers is because of fertilizer not being applied in slightly higher quantities during transition period, the time it takes the soil to rebuild its aggregates and organic matter. Yields will decrease temporarily because of nitrogen being immobilized in the crop residue, which can take a few months to several years to decompose, depending on the crop's C to N ratio and the local environment == Agricultural science: a local science == With the exception of theoretical agronomy, research in agronomy, more than in any other field, is strongly related to local areas. It can be considered a science of ecoregions, because it is closely linked to soil properties and climate, which are never exactly the same from one place to another. Many people think an agricultural production system relying on local weather, soil characteristics, and specific crops has to be studied locally. Others feel a need to know and understand production systems in as many areas as possible, and the human dimension of interaction with nature. == History of agricultural science == Agricultural science began with Gregor Mendel's genetic work, but in modern terms might be better dated from the chemical fertilizer outputs of plant physiological understanding in 18th-century Germany. In the United States, a scientific revolution in agriculture began with the Hatch Act of 1887, which used the term "agricultural science". The Hatch Act was driven by farmers' interest in knowing the constituents of early artificial fertilizer. The Smith-Hughes Act of 1917 shifted agricultural education back to its vocational roots, but the scientific foundation had been built. After 1906, public expenditures on agricultural research in the US exceeded private expenditures for the next 44 years. Intensification of agriculture since the 1960s in developed and developing countries, often referred to as the Green Revolution, was closely tied to progress made in selecting and improving crops and animals for high productivity, as well as to developing additional inputs such as artificial fertilizers and phytosanitary products. As the oldest and largest human intervention in nature, the environmental impact of agriculture in general and more recently intensive agriculture, industrial development, and population growth have raised many questions among agricultural scientists and have led to the development and emergence of new fields. These include technological fields that assume the solution to technological problems lies in better technology, such as integrated pest management, waste treatment technologies, landscape architecture, genomics, and agricultural philosophy fields that include references to food production as something essentially different from non-essential economic 'goods'. In fact, the interaction between these two approaches provide a fertile field for deeper understanding in agricultural science. New technologies, such as biotechnology and computer science (for data processing and storage), and technological advances have made it possible to develop new research fields, including genetic engineering, agrophysics, improved statistical analysis, and precision farming. Balancing these, as above, are the natural and human sciences of agricultural science that seek to understand the human-nature interactions of traditional agriculture, including interaction of religion and agriculture, and the non-material components of agricultural production systems. == Agricultural science and agriculture crisis == Agriculture sciences seek to feed the world's population while preventing biosafety problems that may affect human health and the environment. This requires promoting good management of natural resources and respect for the environment, and increasingly concern for the psychological wellbeing of all concerned in the food production and consumption system. Economic, environmental, and social aspects of agriculture sciences are subjects of ongoing debate. Recent crises (such as avian influenza, mad cow disease and issues such as the use of genetically modified organisms) illustrate the complexity and importance of this debate. == Fields or related disciplines == * Agricultural chemistry * Agricultural diversification * Agricultural economics * Agricultural engineering * Agricultural geography * Agricultural philosophy * Agricultural marketing * Agrophysics * Animal science ** Animal breeding ** Animal nutrition * Agronomy ** Botany ** Theoretical production ecology ** Horticulture ** Plant breeding ** Plant fertilization

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List of Atlas Shrugged characters

This is a list of characters in Ayn Rand's novel Atlas Shrugged. == Major characters == The following are major characters from the novel. === Protagonists === ==== Dagny Taggart ==== Dagny Taggart is the protagonist of the novel. She is Vice-President in Charge of Operations for Taggart Transcontinental, under her brother, James Taggart. Given James' incompetence, Dagny is responsible for all the workings of the railroad. ==== Francisco d'Anconia ==== Francisco d'Anconia is one of the central characters in Atlas Shrugged, and owner by inheritance of the world's largest copper mining operation. He is a childhood friend, and the first love, of Dagny Taggart. A child prodigy of exceptional talents, Francisco was dubbed the "climax" of the d'Anconia line, an already prestigious family of skilled industrialists. He was a classmate of John Galt and Ragnar Danneskjöld and student of both Hugh Akston and Robert Stadler. He began working while still in school, proving that he could have made a fortune without the aid of his family's wealth and power. Later, Francisco bankrupts the d'Anconia business to put it out of others' reach. His full name is given as "Francisco Domingo Carlos Andres Sebastián d'Anconia". ==== John Galt ==== John Galt is the primary male hero of Atlas Shrugged. He initially appears as an unnamed menial worker for Taggart Transcontinental, who often dines with Eddie Willers in the employees' cafeteria, and leads Eddie to reveal important information about Dagny Taggart and Taggart Transcontinental. Only Eddie's side of their conversations is given in the novel. Later in the novel, the reader discovers this worker's true identity. Before working for Taggart Transcontinental, Galt worked as an engineer for the Twentieth Century Motor Company, where he secretly invented a generator of usable electric energy from ambient static electricity, but abandoned his prototype, and his employment, when dissatisfied by an easily corrupted novel system of payment. This prototype was found by Dagny Taggart and Hank Rearden. Galt himself remains concealed, throughout much of the novel, in a valley concealed by himself, where he unites the most skillful inventors and business leaders under his leadership. Much of the book's third division is given to his broadcast speech, which presents the author's philosophy of Objectivism. ==== Henry "Hank" Rearden ==== Henry (known as "Hank") Rearden is one of the central characters in Atlas Shrugged. He owns the most important steel company in the United States, and invents Rearden Metal, an alloy stronger than steel (with similar properties to stainless steel). He lives in Philadelphia with his wife Lillian, his brother Philip, and his elderly mother. Rearden represents a type of self-made man or prototypical hero, and illustrates Rand's theory of sex in so far as he accepts the traditional view of sexual congress as a subhuman instinct, but responds sexually to Dagny Taggart. ==== Eddie Willers ==== Edwin "Eddie" Willers is the Special Assistant to the Vice-President in Charge of Operations at Taggart Transcontinental. His father and grandfather worked for the Taggarts, and himself likewise. He is completely loyal to Dagny and to Taggart Transcontinental. Willers does not possess the creative ability of Galt's associates, but matches them in moral courage and is capable of appreciating and making use of their creations. After Dagny shifts her attention and loyalty to saving the captive Galt, Willers maintains the railroad until its collapse. ==== Ragnar Danneskjöld ==== One of Galt's followers, and world famous as a pirate, who seizes relief ships sent from the United States to the People's States of Europe, to ensure that once those espousing Galt's philosophy are restored to their rightful place in society, they have enough capital to rebuild the world. Kept in the background for much of the book, Danneskjöld makes a personal appearance to encourage Rearden to persevere in his increasingly difficult situation. Danneskjöld is married to the actress Kay Ludlow; their relationship is kept hidden from the outside world, which only knows of Ludlow as a retired film star. He is considered a misfit by Galt's other adherents. According to Barbara Branden, who was closely associated with Rand at the time the book was written, there were sections written describing Danneskjöld's adventures at sea, cut from the final published text. In a 1974 comment at a lecture, Ayn Rand admitted that Danneskjöld's name was a tribute to Victor Hugo's novel, Hans of Iceland, wherein the hero becomes the first of the Counts of Danneskjöld. In the published book, Danneskjöld is always seen through the eyes of others (Dagny Taggart or Hank Rearden), except for a brief paragraph in the very last chapter. === Antagonists === ==== James Taggart ==== The President of Taggart Transcontinental and the book's most important antagonist. Taggart is an expert influence peddler but incapable of making operational decisions on his own. He relies on his sister, Dagny Taggart, to actually run the railroad, but nonetheless opposes her in almost every endeavor. In a sense, he is the antithesis of Dagny. This contradiction leads to the recurring absurdity of his life: the desire to overcome those on whom his life depends, and the horror that he will succeed at this. In the final chapters of the novel, he suffers a complete mental breakdown upon realizing that he can no longer deceive himself in this respect. ==== Lillian Rearden ==== The unsupportive wife of Hank Rearden, who dislikes his habits and (secretly at first) seeks to ruin Rearden to prove her own value. Lillian achieves this, when she passes information to James Taggart about her husband's affair with his sister. This information is used to persuade Rearden to sign a Gift Certificate which delivers all the property rights of Rearden Metal to others. Lillian thereafter uses James Taggart for sexual satisfaction, until Hank abandons her. ==== Dr. Floyd Ferris ==== Ferris is a biologist who works as "co-ordinator" at the State Science Institute. He uses his position there to deride reason and productive achievement, and publishes a book entitled Why Do You Think You Think? He clashes on several occasions with Hank Rearden, and twice attempts to blackmail Rearden into giving up Rearden Metal. He is also one of the group of looters who tries to get Rearden to agree to the Steel Unification Plan. Ferris hosts the demonstration of the Project X weapon, and is the creator of the Ferris Persuader, a torture machine. When John Galt is captured by the looters, Ferris uses the device on Galt, but it breaks down before extracting the information Ferris wants from Galt. Ferris represents the group which uses brute force on the heroes to achieve the ends of the looters. ==== Dr. Robert Stadler ==== A former professor at Patrick Henry University, and along with colleague Hugh Akston, mentor to Francisco d'Anconia, John Galt and Ragnar Danneskjöld. He has since become a sell-out, one who had great promise but squandered it for social approval, to the detriment of the free. He works at the State Science Institute where all his inventions are perverted for use by the military, including the instrument of his demise: Project X (Xylophone). The character was, in part, modeled on J. Robert Oppenheimer, whom Rand had interviewed for an earlier project, and his part in the creation of nuclear weapons. To his former student Galt, Stadler represents the epitome of human evil, as the "man who knew better" but chose not to act for the good. ==== Wesley Mouch ==== The incompetent and treacherous lobbyist whom Hank Rearden reluctantly employs in Washington, who rises to prominence and authority throughout the novel through trading favours and disloyalty. In return for betraying Hank by helping broker the Equalization of Opportunity Bill (which, by restricting the number of businesses each person may own to one, forces Hank to divest most of his companies), he is given a senior position at the Bureau of Economic Planning and National Resources. Later in the novel he becomes its Top Co-ordinator, a position that eventually becomes Economic Dictator of the country. == Secondary characters == The following secondary characters also appear in the novel.

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Academy Award for Best Production Design

The Academy Awards are the oldest awards ceremony for achievements in motion pictures. The Academy Award for Best Production Design recognizes achievement in art direction on a film. The category's original name was Best Art Direction, but was changed to its current name in 2012 for the 85th Academy Awards. This change resulted from the Art Director's branch of the Academy being renamed the Designer's branch. Since 1947, the award is shared with the Set Decorator(s). The films below are listed with their production year (for example, the 2000 Academy Award for Best Art Direction is given to a film from 1999). In the lists below, the winner of the award for each year is shown first, followed by the other nominees. == Best Interior Decoration == == Best Art Direction – Set Decoration ==

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Academy Awards

The Academy Awards or The Oscars (The official title was rebranded as The Oscars in 2013 – changed from The Academy Awards.) is an annual American awards ceremony honoring cinematic achievements in the film industry. The various category winners are awarded a copy of a statuette, officially the Academy Award of Merit, that is better known by its nickname Oscar. The awards, first presented in 1929 at the Hollywood Roosevelt Hotel, are overseen by the Academy of Motion Picture Arts and Sciences (AMPAS). The awards ceremony was first televised in 1953 and is now seen live in more than 200 countries. The Oscars is also the oldest entertainment awards ceremony; its equivalents, the Emmy Awards for television, the Tony Awards for theatre, and the Grammy Awards for music and recording, are modeled after the Academy Awards. The 86th Academy Awards ceremony was held on March 2, 2014, at the Dolby Theatre in Los Angeles, later than usual as to not clash with the Winter Olympics in Sochi, Russia. The 87th Academy Awards is scheduled for February 22, 2015. == History == The first Academy Awards presentation was held on May 16, 1929, at a private dinner at the Hollywood Roosevelt Hotel with an audience of about 270 people. The post-awards party was held at the Mayfair Hotel. The cost of guest tickets for that night's ceremony was $5 ($ as of ),. Fifteen statuettes were awarded, honoring artists, directors and other personalities of the film-making industry of the time for their works during the 1927–28 period; the ceremony ran for 15 minutes. Winners had been announced to media three months earlier; however, that was changed in the second ceremony of the Academy Awards in 1930. Since then and during the first decade, the results were given to newspapers for publication at 11:00 pm on the night of the awards. This method was used until the Los Angeles Times announced the winners before the ceremony began; as a result, the Academy has since 1941 used a sealed envelope to reveal the name of the winners. The first Best Actor awarded was Emil Jannings, for his performances in The Last Command and The Way of All Flesh. He had to return to Europe before the ceremony, so the Academy agreed to give him the prize earlier; this made him the first Academy Award winner in history. The honored professionals were awarded for all the work done in a certain category for the qualifying period; for example, Jannings received the award for two movies in which he starred during that period and Janet Gaynor later won a single Oscar for performances in three films. Since the fourth ceremony, the system changed, and professionals were honored for a specific performance in a single film. For the first six ceremonies, the eligibility period spanned two calendar years. At the 29th ceremony, held on March 27, 1957, the Best Foreign Language Film category was introduced. Until then, foreign-language films were honored with the Special Achievement Award. , a total of 2,809 Oscars have been given away. == Oscar statuette == Although there are seven other types of annual awards presented by the Academy (the Irving G. Thalberg Memorial Award, the Jean Hersholt Humanitarian Award, the Gordon E. Sawyer Award, the Academy Scientific and Technical Award, the Academy Award for Technical Achievement, the John A. Bonner Medal of Commendation, and the Student Academy Award) plus two awards that are not presented annually (the Special Achievement Award in the form of an Oscar statuette and the Honorary Award that may or may not be in the form of an Oscar statuette), the best known one is the Academy Award of Merit more popularly known as the Oscar statuette. Made of gold-plated britannium on a black metal base, it is 13.5 in (34 cm) tall, weighs 8.5 lb (3.85 kg) and depicts a knight rendered in Art Deco style holding a crusader's sword standing on a reel of film with five spokes. The five spokes represent the original branches of the Academy: Actors, Writers, Directors, Producers, and Technicians. In 1928, MGM's art director Cedric Gibbons, one of the original Academy members, supervised the design of the award trophy by printing the design on a scroll. In need of a model for his statuette, Gibbons was introduced by his future wife Dolores del Río to Mexican film director and actor Emilio "El Indio" Fernández. Reluctant at first, Fernández was finally convinced to pose nude to create what today is known as the "Oscar". Then, sculptor George Stanley (who also did the Muse Fountain at the Hollywood Bowl) sculpted Gibbons's design in clay and Sachin Smith cast the statuette in 92.5 percent tin and 7.5 percent copper and then gold-plated it. The only addition to the Oscar since it was created is a minor streamlining of the base. The original Oscar mold was cast in 1928 at the C.W. Shumway & Sons Foundry in Batavia, Illinois, which also contributed to casting the molds for the Vince Lombardi Trophy and Emmy Awards statuettes. Since 1983, approximately 50 Oscars are made each year in Chicago by Illinois manufacturer R.S. Owens & Company. The awards weigh each and take between three to four weeks to manufacture each statue. In support of the American effort in World War II, the statuettes were made of plaster and were traded in for gold ones after the war had ended. === Naming === The origin of the name Oscar is disputed. One biography of Bette Davis claims that she named the Oscar after her first husband, band leader Harmon Oscar Nelson; one of the earliest mentions in print of the term Oscar dates back to a Time magazine article about the 1934 6th Academy Awards. Walt Disney is also quoted as thanking the Academy for his Oscar as early as 1932. Another claimed origin is that the Academy's Executive Secretary, Margaret Herrick, first saw the award in 1931 and made reference to the statuette's reminding her of her "Uncle Oscar" (a nickname for her cousin Oscar Pierce). Columnist Sidney Skolsky was present during Herrick's naming and seized the name in his byline, "Employees have affectionately dubbed their famous statuette 'Oscar'". The trophy was officially dubbed the "Oscar" in 1939 by the Academy of Motion Picture Arts and Sciences. === Ownership of Oscar statuettes === Since 1950, the statuettes have been legally encumbered by the requirement that neither winners nor their heirs may sell the statuettes without first offering to sell them back to the Academy for US$1. If a winner refuses to agree to this stipulation, then the Academy keeps the statuette. Academy Awards not protected by this agreement have been sold in public auctions and private deals for six-figure sums. In December 2011, Orson Welles' 1941 Oscar for Citizen Kane (Best Original Screenplay) was put up for auction, after his heirs won a 2004 court decision contending that Welles did not sign any agreement to return the statue to the Academy. On December 20, 2011, it sold in an online auction for US$861,542. In 1992, Harold Russell needed money for his wife's medical expenses. In a controversial decision, he consigned his 1946 Oscar for Best Supporting Actor for "The Best Years of Our Lives" to Herman Darvick Autograph Auctions, and on August 6, 1992, in New York City, the Oscar sold to a private collector for $60,500. Russell defended his action, saying, "I don't know why anybody would be critical. My wife's health is much more important than sentimental reasons. The movie will be here, even if Oscar isn't." Harold Russell is the only Academy Award winning actor to ever sell an Oscar. While the Oscar is owned by the recipient, it is essentially not on the open market. Michael Todd's grandson tried to sell Todd's Oscar statuette to a movie prop collector in 1989, but the Academy won the legal battle by getting a permanent injunction. Although some Oscar sales transactions have been successful, some buyers have subsequently returned the statuettes to the Academy, which keeps them in its treasury. == Nomination == Since 2004, Academy Award nomination results have been announced to the public in late January. Prior to that, the results were announced in early February. === Voters === The Academy of Motion Picture Arts and Sciences (AMPAS), a professional honorary organization, maintains a voting membership of 5,783 . Academy membership is divided into different branches, with each representing a different discipline in film production. Actors constitute the largest voting bloc, numbering 1,311 members (22 percent) of the Academy's composition. Votes have been certified by the auditing firm PricewaterhouseCoopers (and its predecessor Price Waterhouse) for the past 73 annual awards ceremonies. All AMPAS members must be invited to join by the Board of Governors, on behalf of Academy Branch Executive Committees. Membership eligibility may be achieved by a competitive nomination or a member may submit a name based on other significant contribution to the field of motion pictures. New membership proposals are considered annually. The Academy does not publicly disclose its membership, although as recently as 2007 press releases have announced the names of those who have been invited to join. The 2007 release also stated that it has just under 6,000 voting members. While the membership had been growing, stricter policies have kept its size steady since then. In 2012, the results of a study conducted by The Los Angeles Times was published which revealed the demographic breakdown of approximately 88% of AMPAS' voting membership. Of the 5,100+ active voters confirmed, 94% were Caucasian, 77% were male, and 54% were found to be over the age of 60. 33% of voting members are former nominees (14%) and winners (19%). In May 2011, the Academy sent a letter advising its 6,000 or so voting members that an online system for Oscar voting will be implemented in 2013. === Rules === According to Rules 2 and 3 of the official Academy Awards Rules, a film must open in the previous calendar year, from midnight at the start of 1 January to midnight at the end of 31 December, in Los Angeles County, California, to qualify (except for the Best Foreign Language Film). For example, the 2009 Best Picture winner, The Hurt Locker, was actually first released in 2008, but did not qualify for the 2008 awards as it did not play its Oscar-qualifying run in Los Angeles until mid-2009, thus qualifying for the 2009 awards. Rule 2 states that a film must be feature-length, defined as a minimum of 40 minutes, except for short subject awards, and it must exist either on a 35 mm or 70 mm film print or in 24 frame/s or 48 frame/s progressive scan digital cinema format with native resolution not less than 1280×720. Producers must submit an Official Screen Credits online form before the deadline; in case it is not submitted by the defined deadline, the film will be ineligible for Academy Awards in any year. The form includes the production credits for all related categories. Then, each form is checked and put in a Reminder List of Eligible Releases. In late December ballots and copies of the Reminder List of Eligible Releases are mailed to around 6000 active members. For most categories, members from each of the branches vote to determine the nominees only in their respective categories (i.e. only directors vote for directors, writers for writers, actors for actors, etc.). In all major categories, voters use an instant runoff voting ballot, with potential nominees rewarded in the single transferable vote tally for having strong supporters who rank them first. There are some exceptions in the case of certain categories, like Foreign Film, Documentary and Animated Feature Film, in which movies are selected by special screening committees made up of members from all branches. In the special case of Best Picture, all voting members are eligible to select the nominees for that category. Foreign films must include English subtitles, and each country can submit only one film per year. The winners are then determined by a second round of voting in which all members are then allowed to vote in most categories, including Best Picture. Film companies will spend as much as several million dollars on marketing to awards voters for a movie in the running for Best Picture, in attempts to improve chances of receiving Oscars and other movie awards conferred in Oscar season. The Academy enforces rules to limit overt campaigning by its members so as to try to eliminate excesses and prevent the process from becoming undignified. It has an awards czar on staff who advises members on allowed practices and levies penalties on offenders. For example, a producer of the 2010 Best Picture nominee, The Hurt Locker, was disqualified as a producer in the category when he contacted associates urging them to vote for his film and not another that was seen as front-runner (The Hurt Locker eventually won). == Ceremony == === Telecast === The major awards are presented at a live televised ceremony, most commonly in late February or early March following the relevant calendar year, and six weeks after the announcement of the nominees. It is the culmination of the film awards season, which usually begins during November or December of the previous year. This is an elaborate extravaganza, with the invited guests walking up the red carpet in the creations of the most prominent fashion designers of the day. Black tie dress is the most common outfit for men, although fashion may dictate not wearing a bow-tie, and musical performers sometimes do not adhere to this. (The artists who recorded the nominees for Best Original Song quite often perform those songs live at the awards ceremony, and the fact that they are performing is often used to promote the television broadcast). The Academy Awards is the only awards show that is televised live in all United States time zones (excluding Hawaii; they aired live in Alaska starting in 2011 for the first time since 1996), Canada, the United Kingdom, and gathers millions of viewers elsewhere throughout the world. The 2007 ceremony was watched by more than 40 million Americans. Other awards ceremonies (such as the Emmys, Golden Globes, and Grammys) are broadcast live in the Eastern & Central time zones, but are on tape delay on the West Coast and might not air the same day outside North America (if the awards are even televised). The Academy has for several years claimed that the award show has up to a billion viewers internationally, but this has so far not been confirmed by any independent sources. The Awards show was first televised in 1953, on NBC, which continued to broadcast the event until 1960 when the ABC Network took over, televising the festivities through 1970, after which NBC resumed the broadcasts. ABC once again took over broadcast duties in 1976 and it is under contract to do so through the year 2020. The first countries to broadcast the Academy Awards on television, aside from the United States, were Canada, the United Kingdom and Mexico; the latter two countries did not broadcast the live show, and Mexico did not carry the live event until 1964. By 1954, seven other countries, namely Brazil, Cuba, Venezuela, West Germany, Belgium, the Netherlands, and France, were already broadcasting the Awards show, although previously filmed into a condensed 60-minute version, called the "International Edition" of the Academy Awards. The Awards show was broadcast for the first time via satellite in 1970, but only two South American countries, Chile and Brazil purchased the rights to air the live event. By that time, the television rights to the Awards show were sold in 50 countries. A decade later, the TV rights to the Oscars were already being sold to 60 countries, and by 1984, the TV rights to the Awards were licensed in 76 countries. Until the arrival of subscription television in Europe, Africa and the Middle East, which enabled the Oscars to be broadcast live through these territories, there was already available a previously filmed or taped 90-minute version of the Awards show which was aired on broadcast television in these territories. However, several Asian and Australasian countries, such as Japan, Hong Kong, South Korea, Singapore, Malaysia, Australia and New Zealand were already carrying the live broadcast of the Awards show since the late 1970s. AMPAS still produces a condensed 90-minute version of the Academy Awards for those territories in which the rights to the live broadcast are expensive. After more than 60 years of being held in late March or early April, the ceremonies were moved up to late February or early March starting in 2004 to help disrupt and shorten the intense lobbying and ad campaigns associated with Oscar season in the film industry. Another reason was because of the growing TV ratings success of the NCAA Men's Division I Basketball Championship, which would cut into the Academy Awards audience. The earlier date is also to the advantage of ABC, as it now usually occurs during the highly profitable and important February sweeps period. Some years, the ceremony is moved into early March in deference to the Winter Olympics. Another reason for the move to late February and early March is to avoid the awards ceremony occurring so close to the religious holidays of Passover and Easter, which for decades had been a grievance from members and the general public. Advertising is somewhat restricted, however, as traditionally no movie studios or competitors of official Academy Award sponsors may advertise during the telecast. The Awards show holds the distinction of having won the most Emmys in history, with 47 wins and 195 nominations. After many years of being held on Mondays at 9:00 pm Eastern/6:00 p.m Pacific, in 1999 the ceremonies were moved to Sundays at 8:30 pm Eastern/5:30 pm Pacific. The reasons given for the move were that more viewers would tune in on Sundays, that Los Angeles rush-hour traffic jams could be avoided, and that an earlier start time would allow viewers on the East Coast to go to bed earlier. For many years the film industry had opposed a Sunday broadcast because it would cut into the weekend box office. Originally scheduled for April 8, 1968, the 40th Academy Awards ceremony was postponed for two days, because of the assassination of Dr. Martin Luther King, Jr.. On March 30, 1981, the 53rd Academy Awards was postponed for one day, after the shooting of President Ronald Reagan and others in Washington, D.C. In 1993, an In Memoriam segment was introduced, honoring those who had made a significant contribution to cinema who had died in the preceding 12 months, a selection compiled by a small committee of Academy members. This segment has drawn criticism over the years for the omission of some names. In terms of broadcast length, the ceremony generally averages three and a half hours. The first Oscars, in 1929, lasted 15 minutes. At the other end of the spectrum, the 2000 ceremony lasted four hours and four minutes. In 2010, the organizers of the Academy Awards announced that winners' acceptance speeches must not run past 45 seconds. This, according to organizer Bill Mechanic, was to ensure the elimination of what he termed "the single most hated thing on the show" – overly long and embarrassing displays of emotion. The Academy has contemplated moving the ceremony even further back into January, citing TV viewers' fatigue with the film industry's long awards season. However, such an accelerated schedule would dramatically decrease the voting period for its members, to the point where some voters would only have time to view the contending films streamed on their computers (as opposed to traditionally receiving the films and ballots in the mail). Also, a January ceremony would have to compete with National Football League playoff games. == Awards ceremonies == Historically, the "Oscarcast" has pulled in a bigger haul when box-office hits are favored to win the Best Picture trophy. More than 57.25 million viewers tuned to the telecast for the 70th Academy Awards in 1998, the year of Titanic, which generated close to US$600 million at the North American box office pre-Oscars. The 76th Academy Awards ceremony in which The Lord of the Rings: The Return of the King (pre-telecast box office earnings of US$368 million) received 11 Awards including Best Picture drew 43.56 million viewers. The most watched ceremony based on Nielsen ratings to date, however, was the 42nd Academy Awards (Best Picture Midnight Cowboy) which drew a 43.4% household rating on 7 April 1970. By contrast, ceremonies honoring films that have not performed well at the box office tend to show weaker ratings. The 78th Academy Awards which awarded low-budgeted, independent film Crash (with a pre-Oscar gross of US$53.4 million) generated an audience of 38.64 million with a household rating of 22.91%. In 2008, the 80th Academy Awards telecast was watched by 31.76 million viewers on average with an 18.66% household rating, the lowest rated and least watched ceremony to date, in spite of celebrating 80 years of the Academy Awards. The Best Picture winner of that particular ceremony was another independently financed film (No Country for Old Men). == Venues == In 1929, the first Academy Awards were presented at a banquet dinner at the Hollywood Roosevelt Hotel. From 1930 to 1943, the ceremony alternated between two venues: the Ambassador Hotel on Wilshire Boulevard and the Biltmore Hotel in downtown Los Angeles. Grauman's Chinese Theater in Hollywood then hosted the awards from 1944 to 1946, followed by the Shrine Auditorium in Los Angeles from 1947 to 1948. The 21st Academy Awards in 1949 were held at the Academy Award Theater at what was the Academy's headquarters on Melrose Avenue in Hollywood. From 1950 to 1960, the awards were presented at Hollywood's Pantages Theatre. With the advent of television, the awards from 1953 to 1957 took place simultaneously in Hollywood and New York, first at the NBC International Theatre (1953) and then at the NBC Century Theatre, after which the ceremony took place solely in Los Angeles. The Oscars moved to the Santa Monica Civic Auditorium in Santa Monica, California in 1961. By 1969, the Academy decided to move the ceremonies back to Los Angeles, this time to the Dorothy Chandler Pavilion at the Los Angeles County Music Center. In 2002, the Kodak Theatre became the permanent home of the award ceremonies. However, due to Eastman Kodak's bankruptcy issues, this theatre was renamed the Hollywood and Highland Center in the days preceding the 26 February 2012, awards ceremony. As of May 2012, the theatre was once again renamed – to the Dolby Theatre – after Dolby Laboratories acquired the naming rights. == Merit categories == === Current categories === In the first year of the awards, the Best Director award was split into two separate categories (Drama and Comedy). At times, the Best Original Score award has also been split into separate categories (Drama and Comedy/Musical). From the 1930s through the 1960s, the Art Direction (now Production Design), Cinematography, and Costume Design awards were likewise split into two separate categories (black-and-white films and color films). Prior to 2012, the Production Design award was called Art Direction, while the Makeup and Hairstyling award was called Makeup. Another award, entitled the Academy Award for Best Original Musical, is still in the Academy rulebooks and has yet to be discontinued. However, due to continuous insufficient eligibility each year, it has not been awarded since 1984 (when Purple Rain won). === Discontinued categories === === Proposed categories === The Board of Governors meets each year and considers new award categories. To date, the following proposed categories have been rejected: * Best Casting: rejected in 1999 * Best Stunt Coordination: rejected every year from 1991 to 2012 * Best Title Design: rejected in 1999 == Special categories == The Special Academy Awards are voted on by special committees, rather than by the Academy membership as a whole. They are not always presented on a consistent annual basis. === Current special categories === * Academy Honorary Award: since 1929 * Academy Scientific and Technical Award: since 1931 * Gordon E. Sawyer Award: since 1981 * Jean Hersholt Humanitarian Award: since 1956 * Irving G. Thalberg Memorial Award: since 1938 === Discontinued special categories === * Academy Juvenile Award: 1934 to 1960 * Academy Special Achievement Award: 1972 to 1995 == Critical reception and review == Due to the positive exposure and prestige of the Academy Awards, studios spend millions of dollars and hire publicists specifically to promote their films during what is typically called the "Oscar season". This has generated accusations of the Academy Awards being influenced more by marketing than quality. William Friedkin, an Academy Award-winning film director and former producer of the ceremony, expressed this sentiment at a conference in New York in 2009, describing it as "the greatest promotion scheme that any industry ever devised for itself". In addition, some winners critical of the Academy Awards have boycotted the ceremonies and refused to accept their Oscars. The first to do so was Dudley Nichols (Best Writing in 1935 for The Informer). Nichols boycotted the 8th Academy Awards ceremony because of conflicts between the Academy and the Writers' Guild. George C. Scott became the second person to refuse his award (Best Actor in 1970 for Patton) at the 43rd Academy Awards ceremony. Scott described it as a 'meat parade', saying 'I don't want any part of it." The third was Marlon Brando, who refused his award (Best Actor in 1972 for The Godfather), citing the film industry's discrimination and mistreatment of Native Americans. At the 45th Academy Awards ceremony, Brando sent Sacheen Littlefeather to read a 15-page speech detailing his criticisms. Tim Dirks, editor of AMC's filmsite.org, has written of the Academy Awards, Typical criticism of the Academy Awards for Best Picture is that among the winners and nominees there is an over-representation of romantic historical epics, biographical dramas, romantic dramedies, and family melodramas, most of which are released in the U.S. the last three months of the calendar year. This has led to the coining of the term 'Oscar bait', describing such movies. Overall, the Academy appears to go through periods of rewarding a certain type of film: war-themed movies in the early 1940s; 'social issue' dramas in the late 1940s, late 1960s, and mid-2000s; musicals and historical epics in the early-to-mid-1960s; family melodramas and biographical epics in the late 1970s and throughout the 1980s; atypical genres (movies formerly considered "B movies") in the early 1970s and 1990s; romantic historical epic dramas in the late 1990s and early 2000s; independent violent movies from critically acclaimed directors in the late 2000s; and 20th century historical movies in the 2010s. This has led at times to more specific criticisms that the Academy is disconnected from the audience, e.g. by favoring 'Oscar bait' over audience favorites, or favoring historical melodramas over critically acclaimed movies that depict current life issues. Acting prizes in certain years have been criticized for not recognizing superior performances so much as being awarded for sentimental reasons, personal popularity, atonement for past mistakes, or presented as a "career honor" to recognize a distinguished nominee's entire body of work. == Associated events == The following events are closely associated with the annual Academy Awards ceremony: * Nominees luncheon * Governors Awards * The 25th Independent Spirit Awards (in 2010), usually held in Santa Monica the Saturday before the Oscars, marked the first time it was moved to a Friday and a change of venue to L.A. Live. * The annual "Night Before," traditionally held at the Beverly Hills Hotel, begun in 2002 and generally known as the party of the season, benefits the Motion Picture and Television Fund, which operates a retirement home for SAG actors in the San Fernando Valley. * Elton John AIDS Foundation Academy Award Party airs the awards live at the nearby Pacific Design Center. * The Governors' Ball is the Academy's official after-party, including dinner (until 2011), and is adjacent to the awards-presentation venue. In 2012, the three-course meal was replaced by appetizers. * The Vanity Fair after-party, historically at the former Morton's restaurant, since 2009 has been at the Sunset Tower. == Presenter and performer gifts == It has become a tradition to give out gift bags to the presenters and performers at the Oscars. In recent years these gifts have also been extended to award nominees and winners. The total value of these 'gifts' can reach into the 10s of thousands of dollars. In 2014 the value was reported to be as high as US$80,000. The value has risen to the point where the U.S. Internal Revenue Service issued a statement regarding the gifts and their taxable status. Oscar gift bags have included vacation packages to Hawaii and Mexico and Japan, a private dinner party for the recipient and friends at a restaurant, videophones, a four-night stay at a hotel. Watches, bracelets,vacation packages, spa treatments, bottles of vodka, maple salad dressing, and weight-loss gummie candy. Some of the gifts have even had a "risque" element to them; in 2014 the adult products retailer Adam & Eve had a "Secret Room Gifting Suite". Celebrities visiting the gifting suite included Judith Hoag, Carolyn Hennesy, Kate Linder, Chris Mulkey, Jim O'Heir, and NBA star John Salley. == TV ratings and ad prices == 2006-2011 results are Live+SD, all previous years are Live viewing

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Autism

Autism is a neurodevelopmental disorder characterized by impaired social interaction, verbal and non-verbal communication, and restricted and repetitive behavior. The diagnostic criteria require that symptoms become apparent before a child is three years old. Autism affects information processing in the brain by altering how nerve cells and their synapses connect and organize; how this occurs is not well understood. It is one of three recognized disorders in the autism spectrum (ASDs), the other two being Asperger syndrome, which lacks delays in cognitive development and language, and pervasive developmental disorder, not otherwise specified (commonly abbreviated as PDD-NOS), which is diagnosed when the full set of criteria for autism or Asperger syndrome are not met. Autism has a strong genetic basis, although the genetics of autism are complex and it is unclear whether ASD is explained more by rare mutations, or by rare combinations of common genetic variants. In rare cases, autism is strongly associated with agents that cause birth defects. Controversies surround other proposed environmental causes, such as heavy metals, pesticides or childhood vaccines; the vaccine hypotheses are biologically implausible and have been disproven in scientific studies. The prevalence of autism is about 1–2 per 1,000 people worldwide, and it occurs four to five times more often in boys than girls. The Centers for Disease Control and Prevention (CDC) report 1.5% of children in the United States (one in 68) are diagnosed with ASD , a 30% increase from one in 88 in 2012. The number of people diagnosed with autism has been increasing dramatically since the 1980s, partly due to changes in diagnostic practice and government-subsidized financial incentives for named diagnoses; the question of whether actual prevalence has increased is unresolved. Parents usually notice signs in the first two years of their child's life. The signs usually develop gradually, but some autistic children develop more normally at first and then regress. Early behavioral, cognitive, or speech interventions can help autistic children gain self-care, social, and communication skills. Although there is no known cure, there have been reported cases of children who recovered. Not many children with autism live independently after reaching adulthood, though some become successful. An autistic culture has developed, with some individuals seeking a cure and others believing autism should be accepted as a difference and not treated as a disorder. == Characteristics == Autism is a highly variable neurodevelopmental disorder that first appears during infancy or childhood, and generally follows a steady course without remission. Overt symptoms gradually begin after the age of six months, become established by age two or three years, and tend to continue through adulthood, although often in more muted form. It is distinguished not by a single symptom, but by a characteristic triad of symptoms: impairments in social interaction; impairments in communication; and restricted interests and repetitive behavior. Other aspects, such as atypical eating, are also common but are not essential for diagnosis. Autism's individual symptoms occur in the general population and appear not to associate highly, without a sharp line separating pathologically severe from common traits. === Social development === Social deficits distinguish autism and the related autism spectrum disorders (ASD; see Classification) from other developmental disorders. People with autism have social impairments and often lack the intuition about others that many people take for granted. Noted autistic Temple Grandin described her inability to understand the social communication of neurotypicals, or people with normal neural development, as leaving her feeling "like an anthropologist on Mars". Unusual social development becomes apparent early in childhood. Autistic infants show less attention to social stimuli, smile and look at others less often, and respond less to their own name. Autistic toddlers differ more strikingly from social norms; for example, they have less eye contact and turn taking, and do not have the ability to use simple movements to express themselves, such as the deficiency to point at things. Three- to five-year-old autistic children are less likely to exhibit social understanding, approach others spontaneously, imitate and respond to emotions, communicate nonverbally, and take turns with others. However, they do form attachments to their primary caregivers. Most autistic children display moderately less attachment security than non-autistic children, although this difference disappears in children with higher mental development or less severe ASD. Older children and adults with ASD perform worse on tests of face and emotion recognition. Children with high-functioning autism suffer from more intense and frequent loneliness compared to non-autistic peers, despite the common belief that children with autism prefer to be alone. Making and maintaining friendships often proves to be difficult for those with autism. For them, the quality of friendships, not the number of friends, predicts how lonely they feel. Functional friendships, such as those resulting in invitations to parties, may affect the quality of life more deeply. There are many anecdotal reports, but few systematic studies, of aggression and violence in individuals with ASD. The limited data suggest that, in children with intellectual disability, autism is associated with aggression, destruction of property, and tantrums. === Communication === About a third to a half of individuals with autism do not develop enough natural speech to meet their daily communication needs. Differences in communication may be present from the first year of life, and may include delayed onset of babbling, unusual gestures, diminished responsiveness, and vocal patterns that are not synchronized with the caregiver. In the second and third years, autistic children have less frequent and less diverse babbling, consonants, words, and word combinations; their gestures are less often integrated with words. Autistic children are less likely to make requests or share experiences, and are more likely to simply repeat others' words (echolalia) or reverse pronouns. Joint attention seems to be necessary for functional speech, and deficits in joint attention seem to distinguish infants with ASD: for example, they may look at a pointing hand instead of the pointed-at object, and they consistently fail to point at objects in order to comment on or share an experience. Autistic children may have difficulty with imaginative play and with developing symbols into language. In a pair of studies, high-functioning autistic children aged 8–15 performed equally well as, and adults better than, individually matched controls at basic language tasks involving vocabulary and spelling. Both autistic groups performed worse than controls at complex language tasks such as figurative language, comprehension and inference. As people are often sized up initially from their basic language skills, these studies suggest that people speaking to autistic individuals are more likely to overestimate what their audience comprehends. === Repetitive behavior === Autistic individuals display many forms of repetitive or restricted behavior, which the Repetitive Behavior Scale-Revised (RBS-R) categorizes as follows. * Stereotypy is repetitive movement, such as hand flapping, head rolling, or body rocking. * Compulsive behavior is intended and appears to follow rules, such as arranging objects in stacks or lines. * Sameness is resistance to change; for example, insisting that the furniture not be moved or refusing to be interrupted. * Ritualistic behavior involves an unvarying pattern of daily activities, such as an unchanging menu or a dressing ritual. This is closely associated with sameness and an independent validation has suggested combining the two factors. * Restricted behavior is limited in focus, interest, or activity, such as preoccupation with a single television program, toy or game. * Self-injury includes movements that injure or can injure the person, such as eye-poking, skin-picking, hand-biting and head-banging. No single repetitive or self-injurious behavior seems to be specific to autism, but only autism appears to have an elevated pattern of occurrence and severity of these behaviors. === Other symptoms === Autistic individuals may have symptoms that are independent of the diagnosis, but that can affect the individual or the family. An estimated 0.5% to 10% of individuals with ASD show unusual abilities, ranging from splinter skills such as the memorization of trivia to the extraordinarily rare talents of prodigious autistic savants. Many individuals with ASD show superior skills in perception and attention, relative to the general population. Sensory abnormalities are found in over 90% of those with autism, and are considered core features by some, although there is no good evidence that sensory symptoms differentiate autism from other developmental disorders. Differences are greater for under-responsivity (for example, walking into things) than for over-responsivity (for example, distress from loud noises) or for sensation seeking (for example, rhythmic movements). An estimated 60%–80% of autistic people have motor signs that include poor muscle tone, poor motor planning, and toe walking; deficits in motor coordination are pervasive across ASD and are greater in autism proper. Unusual eating behavior occurs in about three-quarters of children with ASD, to the extent that it was formerly a diagnostic indicator. Selectivity is the most common problem, although eating rituals and food refusal also occur; this does not appear to result in malnutrition. Although some children with autism also have gastrointestinal (GI) symptoms, there is a lack of published rigorous data to support the theory that autistic children have more or different GI symptoms than usual; studies report conflicting results, and the relationship between GI problems and ASD is unclear. Parents of children with ASD have higher levels of stress. Siblings of children with ASD report greater admiration of and less conflict with the affected sibling than siblings of unaffected children and were similar to siblings of children with Down syndrome in these aspects of the sibling relationship. However, they reported lower levels of closeness and intimacy than siblings of children with Down syndrome; siblings of individuals with ASD have greater risk of negative well-being and poorer sibling relationships as adults. == Causes == It has long been presumed that there is a common cause at the genetic, cognitive, and neural levels for autism's characteristic triad of symptoms. However, there is increasing suspicion that autism is instead a complex disorder whose core aspects have distinct causes that often co-occur. Autism has a strong genetic basis, although the genetics of autism are complex and it is unclear whether ASD is explained more by rare mutations with major effects, or by rare multigene interactions of common genetic variants. Complexity arises due to interactions among multiple genes, the environment, and epigenetic factors which do not change DNA but are heritable and influence gene expression. Studies of twins suggest that heritability is 0.7 for autism and as high as 0.9 for ASD, and siblings of those with autism are about 25 times more likely to be autistic than the general population. However, most of the mutations that increase autism risk have not been identified. Typically, autism cannot be traced to a Mendelian (single-gene) mutation or to a single chromosome abnormality, and none of the genetic syndromes associated with ASDs have been shown to selectively cause ASD. Numerous candidate genes have been located, with only small effects attributable to any particular gene. The large number of autistic individuals with unaffected family members may result from copy number variations—spontaneous deletions or duplications in genetic material during meiosis. Hence, a substantial fraction of autism cases may be traceable to genetic causes that are highly heritable but not inherited: that is, the mutation that causes the autism is not present in the parental genome. Several lines of evidence point to synaptic dysfunction as a cause of autism. Some rare mutations may lead to autism by disrupting some synaptic pathways, such as those involved with cell adhesion. Gene replacement studies in mice suggest that autistic symptoms are closely related to later developmental steps that depend on activity in synapses and on activity-dependent changes. All known teratogens (agents that cause birth defects) related to the risk of autism appear to act during the first eight weeks from conception, and though this does not exclude the possibility that autism can be initiated or affected later, there is strong evidence that autism arises very early in development. Although evidence for other environmental causes is anecdotal and has not been confirmed by reliable studies, extensive searches are underway. Environmental factors that have been claimed to contribute to or exacerbate autism, or may be important in future research, include certain foods, infectious diseases, heavy metals, solvents, diesel exhaust, PCBs, phthalates and phenols used in plastic products, pesticides, brominated flame retardants, alcohol, smoking, illicit drugs, vaccines, and prenatal stress, although no links have been found, and some have been completely disproven. Parents may first become aware of autistic symptoms in their child around the time of a routine vaccination. This has led to unsupported theories blaming vaccine "overload", a vaccine preservative, or the MMR vaccine for causing autism. The latter theory was supported by a litigation-funded study that has since been shown to have been "an elaborate fraud". Although these theories lack convincing scientific evidence and are biologically implausible, parental concern about a potential vaccine link with autism has led to lower rates of childhood immunizations, outbreaks of previously controlled childhood diseases in some countries, and the preventable deaths of several children. == Mechanism == Autism's symptoms result from maturation-related changes in various systems of the brain. How autism occurs is not well understood. Its mechanism can be divided into two areas: the pathophysiology of brain structures and processes associated with autism, and the neuropsychological linkages between brain structures and behaviors. The behaviors appear to have multiple pathophysiologies. === Pathophysiology === Unlike many other brain disorders, such as Parkinson's, autism does not have a clear unifying mechanism at either the molecular, cellular, or systems level; it is not known whether autism is a few disorders caused by mutations converging on a few common molecular pathways, or is (like intellectual disability) a large set of disorders with diverse mechanisms. Autism appears to result from developmental factors that affect many or all functional brain systems, and to disturb the timing of brain development more than the final product. Neuroanatomical studies and the associations with teratogens strongly suggest that autism's mechanism includes alteration of brain development soon after conception. This anomaly appears to start a cascade of pathological events in the brain that are significantly influenced by environmental factors. Just after birth, the brains of autistic children tend to grow faster than usual, followed by normal or relatively slower growth in childhood. It is not known whether early overgrowth occurs in all autistic children. It seems to be most prominent in brain areas underlying the development of higher cognitive specialization. Hypotheses for the cellular and molecular bases of pathological early overgrowth include the following: * An excess of neurons that causes local overconnectivity in key brain regions. * Disturbed neuronal migration during early gestation. * Unbalanced excitatory–inhibitory networks. * Abnormal formation of synapses and dendritic spines, for example, by modulation of the neurexin–neuroligin cell-adhesion system, or by poorly regulated synthesis of synaptic proteins. Disrupted synaptic development may also contribute to epilepsy, which may explain why the two conditions are associated. The immune system is thought to play an important role in autism, autistic children have been found by researchers to have inflammation of both the peripheral and central immune systems as indicated by increased levels of pro-inflammatory cytokines and significant activation of microglia. Biomarkers of abnormal immune function have also been associated with increased impairments in behaviors that are characteristic of the core features of autism such as deficits in social interactions and communication. Interactions between the immune system and the nervous system begin early during the embryonic stage of life, and successful neurodevelopment depends on a balanced immune response. It is thought that activation of a pregnant mother's immune system such as from environmental toxicants or infection can contribute to causing autism through causing a disruption of brain development. This is supported by recent studies that have found that infection during pregnancy is associated with an increased risk of autism The relationship of neurochemicals to autism is not well understood; several have been investigated, with the most evidence for the role of serotonin and of genetic differences in its transport. The role of group I metabotropic glutamate receptors (mGluR) in the pathogenesis of fragile X syndrome, the most common identified genetic cause of autism, has led to interest in the possible implications for future autism research into this pathway. Some data suggests neuronal overgrowth potentially related to an increase in several growth hormones or to impaired regulation of growth factor receptors. Also, some inborn errors of metabolism are associated with autism, but probably account for less than 5% of cases. The mirror neuron system (MNS) theory of autism hypothesizes that distortion in the development of the MNS interferes with imitation and leads to autism's core features of social impairment and communication difficulties. The MNS operates when an animal performs an action or observes another animal perform the same action. The MNS may contribute to an individual's understanding of other people by enabling the modeling of their behavior via embodied simulation of their actions, intentions, and emotions. Several studies have tested this hypothesis by demonstrating structural abnormalities in MNS regions of individuals with ASD, delay in the activation in the core circuit for imitation in individuals with Asperger syndrome, and a correlation between reduced MNS activity and severity of the syndrome in children with ASD. However, individuals with autism also have abnormal brain activation in many circuits outside the MNS and the MNS theory does not explain the normal performance of autistic children on imitation tasks that involve a goal or object. ASD-related patterns of low function and aberrant activation in the brain differ depending on whether the brain is doing social or nonsocial tasks. In autism there is evidence for reduced functional connectivity of the default network, a large-scale brain network involved in social and emotional processing, with intact connectivity of the task-positive network, used in sustained attention and goal-directed thinking. In people with autism the two networks are not negatively correlated in time, suggesting an imbalance in toggling between the two networks, possibly reflecting a disturbance of self-referential thought. The underconnectivity theory of autism hypothesizes that autism is marked by underfunctioning high-level neural connections and synchronization, along with an excess of low-level processes. Evidence for this theory has been found in functional neuroimaging studies on autistic individuals and by a brainwave study that suggested that adults with ASD have local overconnectivity in the cortex and weak functional connections between the frontal lobe and the rest of the cortex. Other evidence suggests the underconnectivity is mainly within each hemisphere of the cortex and that autism is a disorder of the association cortex. From studies based on event-related potentials, transient changes to the brain's electrical activity in response to stimuli, there is considerable evidence for differences in autistic individuals with respect to attention, orientation to auditory and visual stimuli, novelty detection, language and face processing, and information storage; several studies have found a preference for nonsocial stimuli. For example, magnetoencephalography studies have found evidence in autistic children of delayed responses in the brain's processing of auditory signals. In the genetic area, relations have been found between autism and schizophrenia based on duplications and deletions of chromosomes; research showed that schizophrenia and autism are significantly more common in combination with 1q21.1 deletion syndrome. Research on autism/schizophrenia relations for chromosome 15 (15q13.3), chromosome 16 (16p13.1) and chromosome 17 (17p12) are inconclusive. === Neuropsychology === Two major categories of cognitive theories have been proposed about the links between autistic brains and behavior. The first category focuses on deficits in social cognition. Simon Baron-Cohen's empathizing–systemizing theory postulates that autistic individuals can systemize—that is, they can develop internal rules of operation to handle events inside the brain—but are less effective at empathizing by handling events generated by other agents. An extension, the extreme male brain theory, hypothesizes that autism is an extreme case of the male brain, defined psychometrically as individuals in whom systemizing is better than empathizing. These theories are somewhat related to Baron-Cohen's earlier theory of mind approach, which hypothesizes that autistic behavior arises from an inability to ascribe mental states to oneself and others. The theory of mind hypothesis is supported by autistic children's atypical responses to the Sally–Anne test for reasoning about others' motivations, and the mirror neuron system theory of autism described in Pathophysiology maps well to the hypothesis. However, most studies have found no evidence of impairment in autistic individuals' ability to understand other people's basic intentions or goals; instead, data suggests that impairments are found in understanding more complex social emotions or in considering others' viewpoints. The second category focuses on nonsocial or general processing: the executive functions such as working memory, planning, inhibition. In his review, Kenworthy states that "the claim of executive dysfunction as a causal factor in autism is controversial", however, "it is clear that executive dysfunction plays a role in the social and cognitive deficits observed in individuals with autism". Tests of core executive processes such as eye movement tasks indicate improvement from late childhood to adolescence, but performance never reaches typical adult levels. A strength of the theory is predicting stereotyped behavior and narrow interests; two weaknesses are that executive function is hard to measure and that executive function deficits have not been found in young autistic children. Weak central coherence theory hypothesizes that a limited ability to see the big picture underlies the central disturbance in autism. One strength of this theory is predicting special talents and peaks in performance in autistic people. A related theory—enhanced perceptual functioning—focuses more on the superiority of locally oriented and perceptual operations in autistic individuals. These theories map well from the underconnectivity theory of autism. Neither category is satisfactory on its own; social cognition theories poorly address autism's rigid and repetitive behaviors, while the nonsocial theories have difficulty explaining social impairment and communication difficulties. A combined theory based on multiple deficits may prove to be more useful. == Diagnosis == Diagnosis is based on behavior, not cause or mechanism. Autism is defined in the DSM-IV-TR as exhibiting at least six symptoms total, including at least two symptoms of qualitative impairment in social interaction, at least one symptom of qualitative impairment in communication, and at least one symptom of restricted and repetitive behavior. Sample symptoms include lack of social or emotional reciprocity, stereotyped and repetitive use of language or idiosyncratic language, and persistent preoccupation with parts of objects. Onset must be prior to age three years, with delays or abnormal functioning in either social interaction, language as used in social communication, or symbolic or imaginative play. The disturbance must not be better accounted for by Rett syndrome or childhood disintegrative disorder. ICD-10 uses essentially the same definition. Several diagnostic instruments are available. Two are commonly used in autism research: the Autism Diagnostic Interview-Revised (ADI-R) is a semistructured parent interview, and the Autism Diagnostic Observation Schedule (ADOS) uses observation and interaction with the child. The Childhood Autism Rating Scale (CARS) is used widely in clinical environments to assess severity of autism based on observation of children. A pediatrician commonly performs a preliminary investigation by taking developmental history and physically examining the child. If warranted, diagnosis and evaluations are conducted with help from ASD specialists, observing and assessing cognitive, communication, family, and other factors using standardized tools, and taking into account any associated medical conditions. A pediatric neuropsychologist is often asked to assess behavior and cognitive skills, both to aid diagnosis and to help recommend educational interventions. A differential diagnosis for ASD at this stage might also consider intellectual disability, hearing impairment, and a specific language impairment such as Landau–Kleffner syndrome. The presence of autism can make it harder to diagnose coexisting psychiatric disorders such as depression. Clinical genetics evaluations are often done once ASD is diagnosed, particularly when other symptoms already suggest a genetic cause. Although genetic technology allows clinical geneticists to link an estimated 40% of cases to genetic causes, consensus guidelines in the US and UK are limited to high-resolution chromosome and fragile X testing. A genotype-first model of diagnosis has been proposed, which would routinely assess the genome's copy number variations. As new genetic tests are developed several ethical, legal, and social issues will emerge. Commercial availability of tests may precede adequate understanding of how to use test results, given the complexity of autism's genetics. Metabolic and neuroimaging tests are sometimes helpful, but are not routine. ASD can sometimes be diagnosed by age 14 months, although diagnosis becomes increasingly stable over the first three years of life: for example, a one-year-old who meets diagnostic criteria for ASD is less likely than a three-year-old to continue to do so a few years later. In the UK the National Autism Plan for Children recommends at most 30 weeks from first concern to completed diagnosis and assessment, though few cases are handled that quickly in practice. Although the symptoms of autism and ASD begin early in childhood, they are sometimes missed; years later, adults may seek diagnoses to help them or their friends and family understand themselves, to help their employers make adjustments, or in some locations to claim disability living allowances or other benefits. Underdiagnosis and overdiagnosis are problems in marginal cases, and much of the recent increase in the number of reported ASD cases is likely due to changes in diagnostic practices. The increasing popularity of drug treatment options and the expansion of benefits has given providers incentives to diagnose ASD, resulting in some overdiagnosis of children with uncertain symptoms. Conversely, the cost of screening and diagnosis and the challenge of obtaining payment can inhibit or delay diagnosis. It is particularly hard to diagnose autism among the visually impaired, partly because some of its diagnostic criteria depend on vision, and partly because autistic symptoms overlap with those of common blindness syndromes or blindisms. === Classification === Autism is one of the five pervasive developmental disorders (PDD), which are characterized by widespread abnormalities of social interactions and communication, and severely restricted interests and highly repetitive behavior. These symptoms do not imply sickness, fragility, or emotional disturbance. Of the five PDD forms, Asperger syndrome is closest to autism in signs and likely causes; Rett syndrome and childhood disintegrative disorder share several signs with autism, but may have unrelated causes; PDD not otherwise specified (PDD-NOS; also called atypical autism) is diagnosed when the criteria are not met for a more specific disorder. Unlike with autism, people with Asperger syndrome have no substantial delay in language development. The terminology of autism can be bewildering, with autism, Asperger syndrome and PDD-NOS often called the autism spectrum disorders (ASD) or sometimes the autistic disorders, whereas autism itself is often called autistic disorder,childhood autism, or infantile autism. In this article, autism refers to the classic autistic disorder; in clinical practice, though, autism, ASD, and PDD are often used interchangeably. ASD, in turn, is a subset of the broader autism phenotype, which describes individuals who may not have ASD but do have autistic-like traits, such as avoiding eye contact. The manifestations of autism cover a wide spectrum, ranging from individuals with severe impairments—who may be silent, developmentally disabled, and locked into hand flapping and rocking—to high functioning individuals who may have active but distinctly odd social approaches, narrowly focused interests, and verbose, pedantic communication. Because the behavior spectrum is continuous, boundaries between diagnostic categories are necessarily somewhat arbitrary. Sometimes the syndrome is divided into low-, medium- or high-functioning autism (LFA, MFA, and HFA), based on IQ thresholds, or on how much support the individual requires in daily life; these subdivisions are not standardized and are controversial. Autism can also be divided into syndromal and non-syndromal autism; the syndromal autism is associated with severe or profound intellectual disability or a congenital syndrome with physical symptoms, such as tuberous sclerosis. Although individuals with Asperger syndrome tend to perform better cognitively than those with autism, the extent of the overlap between Asperger syndrome, HFA, and non-syndromal autism is unclear. Some studies have reported diagnoses of autism in children due to a loss of language or social skills, as opposed to a failure to make progress, typically from 15 to 30 months of age. The validity of this distinction remains controversial; it is possible that regressive autism is a specific subtype, or that there is a continuum of behaviors between autism with and without regression. Research into causes has been hampered by the inability to identify biologically meaningful subgroups within the autistic population and by the traditional boundaries between the disciplines of psychiatry, psychology, neurology and pediatrics. Newer technologies such as fMRI and diffusion tensor imaging can help identify biologically relevant phenotypes (observable traits) that can be viewed on brain scans, to help further neurogenetic studies of autism; one example is lowered activity in the fusiform face area of the brain, which is associated with impaired perception of people versus objects. It has been proposed to classify autism using genetics as well as behavior. == Screening == About half of parents of children with ASD notice their child's unusual behaviors by age 18 months, and about four-fifths notice by age 24 months. According to an article in the Journal of Autism and Developmental Disorders, failure to meet any of the following milestones "is an absolute indication to proceed with further evaluations. Delay in referral for such testing may delay early diagnosis and treatment and affect the long-term outcome". * No babbling by 12 months. * No gesturing (pointing, waving, etc.) by 12 months. * No single words by 16 months. * No two-word (spontaneous, not just echolalic) phrases by 24 months. * Any loss of any language or social skills, at any age. US and Japanese practice is to screen all children for ASD at 18 and 24 months, using autism-specific formal screening tests. In contrast, in the UK, children whose families or doctors recognize possible signs of autism are screened. It is not known which approach is more effective. Screening tools include the Modified Checklist for Autism in Toddlers (M-CHAT), the Early Screening of Autistic Traits Questionnaire, and the First Year Inventory; initial data on M-CHAT and its predecessor CHAT on children aged 18–30 months suggests that it is best used in a clinical setting and that it has low sensitivity (many false-negatives) but good specificity (few false-positives). It may be more accurate to precede these tests with a broadband screener that does not distinguish ASD from other developmental disorders. Screening tools designed for one culture's norms for behaviors like eye contact may be inappropriate for a different culture. Although genetic screening for autism is generally still impractical, it can be considered in some cases, such as children with neurological symptoms and dysmorphic features. == Management == The main goals when treating children with autism are to lessen associated deficits and family distress, and to increase quality of life and functional independence. No single treatment is best and treatment is typically tailored to the child's needs. Families and the educational system are the main resources for treatment. Studies of interventions have methodological problems that prevent definitive conclusions about efficacy. Although many psychosocial interventions have some positive evidence, suggesting that some form of treatment is preferable to no treatment, the methodological quality of systematic reviews of these studies has generally been poor, their clinical results are mostly tentative, and there is little evidence for the relative effectiveness of treatment options. Intensive, sustained special education programs and behavior therapy early in life can help children acquire self-care, social, and job skills, and often improve functioning and decrease symptom severity and maladaptive behaviors; claims that intervention by around age three years is crucial are not substantiated. Available approaches include applied behavior analysis (ABA), developmental models, structured teaching, speech and language therapy, social skills therapy, and occupational therapy. There is some evidence that early intensive behavioral intervention, an early intervention model for 20 to 40 hours a week for multiple years, is an effective behavioral treatment for some children with ASD. Educational interventions can be effective to varying degrees in most children: intensive ABA treatment has demonstrated effectiveness in enhancing global functioning in preschool children and is well-established for improving intellectual performance of young children. Neuropsychological reports are often poorly communicated to educators, resulting in a gap between what a report recommends and what education is provided. It is not known whether treatment programs for children lead to significant improvements after the children grow up, and the limited research on the effectiveness of adult residential programs shows mixed results. The appropriateness of including children with varying severity of autism spectrum disorders in the general education population is a subject of current debate among educators and researchers. Many medications are used to treat ASD symptoms that interfere with integrating a child into home or school when behavioral treatment fails. More than half of US children diagnosed with ASD are prescribed psychoactive drugs or anticonvulsants, with the most common drug classes being antidepressants, stimulants, and antipsychotics. Aside from antipsychotics, Both aripiprazole and risperidone are effective for treating irritability in children with autistic disorders. there is scant reliable research about the effectiveness or safety of drug treatments for adolescents and adults with ASD. A person with ASD may respond atypically to medications, the medications can have adverse effects, and no known medication relieves autism's core symptoms of social and communication impairments. Experiments in mice have reversed or reduced some symptoms related to autism by replacing or modulating gene function, suggesting the possibility of targeting therapies to specific rare mutations known to cause autism. Although many alternative therapies and interventions are available, few are supported by scientific studies. Treatment approaches have little empirical support in quality-of-life contexts, and many programs focus on success measures that lack predictive validity and real-world relevance. Scientific evidence appears to matter less to service providers than program marketing, training availability, and parent requests. Some alternative treatments may place the child at risk. A 2008 study found that compared to their peers, autistic boys have significantly thinner bones if on casein-free diets; in 2005, botched chelation therapy killed a five-year-old child with autism. There has been early research looking at hyperbaric treatments in autistic children. Treatment is expensive; indirect costs are more so. For someone born in 2000, a US study estimated an average lifetime cost of $ (net present value in dollars, inflation-adjusted from 2003 estimate), with about 10% medical care, 30% extra education and other care, and 60% lost economic productivity. Publicly supported programs are often inadequate or inappropriate for a given child, and unreimbursed out-of-pocket medical or therapy expenses are associated with likelihood of family financial problems; one 2008 US study found a 14% average loss of annual income in families of children with ASD, and a related study found that ASD is associated with higher probability that child care problems will greatly affect parental employment. US states increasingly require private health insurance to cover autism services, shifting costs from publicly funded education programs to privately funded health insurance. After childhood, key treatment issues include residential care, job training and placement, sexuality, social skills, and estate planning. == Prognosis == There is no known cure. Children recover occasionally, so that they lose their diagnosis of ASD; this occurs sometimes after intensive treatment and sometimes not. It is not known how often recovery happens; reported rates in unselected samples of children with ASD have ranged from 3% to 25%. Most autistic children can acquire language by age 5 or younger, though a few have developed communication skills in later years. Most children with autism lack social support, meaningful relationships, future employment opportunities or self-determination. Although core difficulties tend to persist, symptoms often become less severe with age. Few high-quality studies address long-term prognosis. Some adults show modest improvement in communication skills, but a few decline; no study has focused on autism after midlife. Acquiring language before age six, having an IQ above 50, and having a marketable skill all predict better outcomes; independent living is unlikely with severe autism. Most, but not all, people with autism face significant obstacles in transitioning to adulthood. == Epidemiology == Most recent reviews tend to estimate a prevalence of 1–2 per 1,000 for autism and close to 6 per 1,000 for ASD, and 11 per 1,000 children in the United States for ASD as of 2008; because of inadequate data, these numbers may underestimate ASD's true prevalence. PDD-NOS's prevalence has been estimated at 3.7 per 1,000, Asperger syndrome at roughly 0.6 per 1,000, and childhood disintegrative disorder at 0.02 per 1,000. The number of reported cases of autism increased dramatically in the 1990s and early 2000s. This increase is largely attributable to changes in diagnostic practices, referral patterns, availability of services, age at diagnosis, and public awareness, though unidentified environmental risk factors cannot be ruled out. The available evidence does not rule out the possibility that autism's true prevalence has increased; a real increase would suggest directing more attention and funding toward changing environmental factors instead of continuing to focus on genetics. Boys are at higher risk for ASD than girls. The sex ratio averages 4.3:1 and is greatly modified by cognitive impairment: it may be close to 2:1 with intellectual disability and more than 5.5:1 without. Several theories about the higher prevalence in males have been investigated, but the cause of the difference is unconfirmed. Although the evidence does not implicate any single pregnancy-related risk factor as a cause of autism, the risk of autism is associated with advanced age in either parent, and with diabetes, bleeding, and use of psychiatric drugs in the mother during pregnancy. The risk is greater with older fathers than with older mothers; two potential explanations are the known increase in mutation burden in older sperm, and the hypothesis that men marry later if they carry genetic liability and show some signs of autism. Most professionals believe that race, ethnicity, and socioeconomic background do not affect the occurrence of autism. Several other conditions are common in children with autism. They include: * Genetic disorders. About 10–15% of autism cases have an identifiable Mendelian (single-gene) condition, chromosome abnormality, or other genetic syndrome, and ASD is associated with several genetic disorders. * Intellectual disability. The percentage of autistic individuals who also meet criteria for intellectual disability has been reported as anywhere from 25% to 70%, a wide variation illustrating the difficulty of assessing autistic intelligence. In comparison, for PDD-NOS the association with intellectual disability is much weaker, and by definition, the diagnosis of Asperger's excludes intellectual disability. * Anxiety disorders are common among children with ASD; there are no firm data, but studies have reported prevalences ranging from 11% to 84%. Many anxiety disorders have symptoms that are better explained by ASD itself, or are hard to distinguish from ASD's symptoms. * Epilepsy, with variations in risk of epilepsy due to age, cognitive level, and type of language disorder. * Several metabolic defects, such as phenylketonuria, are associated with autistic symptoms. * Minor physical anomalies are significantly increased in the autistic population. * Preempted diagnoses. Although the DSM-IV rules out concurrent diagnosis of many other conditions along with autism, the full criteria for Attention deficit hyperactivity disorder (ADHD), Tourette syndrome, and other of these conditions are often present and these comorbid diagnoses are increasingly accepted. * Sleep problems affect about two-thirds of individuals with ASD at some point in childhood. These most commonly include symptoms of insomnia such as difficulty in falling asleep, frequent nocturnal awakenings, and early morning awakenings. Sleep problems are associated with difficult behaviors and family stress, and are often a focus of clinical attention over and above the primary ASD diagnosis. == History == A few examples of autistic symptoms and treatments were described long before autism was named. The Table Talk of Martin Luther, compiled by his notetaker, Mathesius, contains the story of a 12-year-old boy who may have been severely autistic. Luther reportedly thought the boy was a soulless mass of flesh possessed by the devil, and suggested that he be suffocated, although a later critic has cast doubt on the veracity of this report. The earliest well-documented case of autism is that of Hugh Blair of Borgue, as detailed in a 1747 court case in which his brother successfully petitioned to annul Blair's marriage to gain Blair's inheritance. The Wild Boy of Aveyron, a feral child caught in 1798, showed several signs of autism; the medical student Jean Itard treated him with a behavioral program designed to help him form social attachments and to induce speech via imitation. The New Latin word autismus (English translation autism) was coined by the Swiss psychiatrist Eugen Bleuler in 1910 as he was defining symptoms of schizophrenia. He derived it from the Greek word autós (αὐτός, meaning "self"), and used it to mean morbid self-admiration, referring to "autistic withdrawal of the patient to his fantasies, against which any influence from outside becomes an intolerable disturbance". The word autism first took its modern sense in 1938 when Hans Asperger of the Vienna University Hospital adopted Bleuler's terminology autistic psychopaths in a lecture in German about child psychology. Asperger was investigating an ASD now known as Asperger syndrome, though for various reasons it was not widely recognized as a separate diagnosis until 1981. Leo Kanner of the Johns Hopkins Hospital first used autism in its modern sense in English when he introduced the label early infantile autism in a 1943 report of 11 children with striking behavioral similarities. Almost all the characteristics described in Kanner's first paper on the subject, notably "autistic aloneness" and "insistence on sameness", are still regarded as typical of the autistic spectrum of disorders. It is not known whether Kanner derived the term independently of Asperger. Kanner's reuse of autism led to decades of confused terminology like infantile schizophrenia, and child psychiatry's focus on maternal deprivation led to misconceptions of autism as an infant's response to "refrigerator mothers". Starting in the late 1960s autism was established as a separate syndrome by demonstrating that it is lifelong, distinguishing it from intellectual disability and schizophrenia and from other developmental disorders, and demonstrating the benefits of involving parents in active programs of therapy. As late as the mid-1970s there was little evidence of a genetic role in autism; now it is thought to be one of the most heritable of all psychiatric conditions. Although the rise of parent organizations and the destigmatization of childhood ASD have deeply affected how we view ASD, parents continue to feel social stigma in situations where their autistic children's behaviors are perceived negatively by others, and many primary care physicians and medical specialists still express some beliefs consistent with outdated autism research. The Internet has helped autistic individuals bypass nonverbal cues and emotional sharing that they find so hard to deal with, and has given them a way to form online communities and work remotely. Sociological and cultural aspects of autism have developed: some in the community seek a cure, while others believe that autism is simply another way of being.

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