945 résultats pour "americana"

• Learning.

  B1 Acquisition The acquisition phase is the initial learning of the conditioned response—for example, the dog learning to salivate at the sound of the bell. Several factors can affect the speed of conditioning during the acquisition phase. The most important factors are the order and timing of the stimuli. Conditioning occurs most quickly when theconditioned stimulus (the bell) precedes the unconditioned stimulus (the food) by about half a second. Conditioning takes longer and the response is...

• Amerikanischer Film.

  1943 For Whom the Bell Tolls (Wem die Stunde schlägt), Sam WoodHeaven Can Wait (Ein himmlischer Sünder), Ernst Lubitsch 1944 Cover Girl (Es tanzt die Göttin), Charles VidorLaura (Laura), Otto PremingerTo Have and Have Not (Haben und Nichthaben), Howard Hawks 1945 Mildred Pierce (Solange ein Herz schlägt), Michael CurtizThe Lost Weekend (Das verlorene Wochenende), Billy WilderThe Spiral Staircase (Die Wendeltreppe), Robert Siodmak 1946 Gilda (Gilda), Charles VidorMy Darling Clementine (Tombstone/...

• Aging - biology.

  Different theories have been proposed to explain how SF works. One theory is based on the assumption that aging, and diseases that occur more frequently withadvancing age, are caused by structural damage to cells. This damage accumulates in tiny amounts each time the cell divides, eventually preventing the cell fromcarrying out normal functions. One cause of this damage may be free radicals, which are chemical compounds found in the environment and also generated by normal chemical reactions in...

• Houston - geography.

  Prominent historical and cultural institutions include the Civic Center Complex, located in the central business district. The complex is composed of the George R. BrownConvention Center; the Wortham Center, which is the home of the Houston Grand Opera and the Houston Ballet; and the Jesse H. Jones Hall for Performing Arts, whichis the home of the Houston Symphony. The nearby Alley Theatre houses a professional repertory acting company. Among other local professional performance groupsare the Ma...

• Political Parties in the United States.

  quickly enabled the Republican Party to overpower the Know-Nothings. Although the Republicans lost their first campaign for the presidency in 1856, they triumphed in1860 with former congressman Abraham Lincoln. The Republican victory resulted in part from the division of the Democratic Party into Northern and Southern factions,each of which ran its own presidential candidate, and in part from their success at attracting Whigs and Know-Nothings who had opposed the Republicans in 1856.During the C...

• ASA Sigle de American Standard Association.

• Steven Spielberg I INTRODUCTION Steven Spielberg The imaginative films of Steven Spielberg are known for their technical creativity and memorable characters.

  Courtesy of Everett Collection Spielberg teamed up with writer-producer George Lucas in the 1980s to make the action-adventure Indiana Jones film series: Raiders of the Lost Ark (1981), Indiana Jones and the Temple of Doom (1984), and Indiana Jones and the Last Crusade (1989). Other directorial projects during this period included the science-fiction fantasy E.T.—The Extra-Terrestrial , at the time the highest-grossing film ever made; The Color Purple (1985), a drama based on the novel...

• New York (city) - geography.

  Concourse are particularly prized, because the apartment buildings are well kept and the public parks are easily accessible. City Island retains the charm of a small fishingvillage. Parts of the Bronx, however, fell victim to decay and abandonment, especially between 1970 and 1980, when the population of the borough fell by 20 percent. The low pointoccurred in 1976, when future U.S. president Jimmy Carter compared the South Bronx to the bombed-out German city of Dresden after World War II (1939-...

• Cleveland (Ohio) - geography.

  Cleveland Children’s Museum. Also located in University Circle is Severance Hall, the home of the world-acclaimed Cleveland Orchestra. Nearby is the Cleveland PlayHouse, with three large, restored theaters and one of the largest non-profit professional theaters in the country. Downtown is Playhouse Square Center, with fourrecently restored theaters, home to the Cleveland Opera and the Great Lakes Theater Festival. On the waterfront is the Rock and Roll Hall of Fame and Museum,opened in 1995 and...

• Slavery in Africa.

  The spread of Islam from Arabia into Africa after the religion’s founding in the 7th century AD affected the practice of slavery and slave trading in West, Central, and East Africa. Arabs had practiced slave raiding and trading in Arabia for centuries prior to the founding of Islam, and slavery became a component of Islamic traditions.Both the Qur'an (Koran) (the sacred scripture of Islam) and Islamic religious law served to codify and justify the existence of slavery. As Muslim Arabs conquered...

• Uruguay (country) - country.

  Freedom of religion is guaranteed by the constitution of Uruguay. Three-quarters of the people belong to the Roman Catholic Church. There are also sizable Protestantand Jewish congregations. The official language is Spanish, which in Uruguay has been influenced by Italian vocabulary and pronunciation. C Education Uruguay has one of the highest rates of literacy in Latin America, at 98.2 percent of the adult population. Six years of primary education is compulsory, and Uruguay isone of the few n...

• The Scarlett letter

  The Scarlet Letter is an american romantic novel of fiction, written by Nathaniel Hawthorne, published in the mid-nineteenth century. It is considered to be his best work. Nathaniel Hawthorne was an American novelist and short story writer from the nineteen century. He is a dark romantic (anti-transcendentalist) which means that he explores the psychological effects of guilt and sin, madness, derangement in the human psyche. The Scarlett letter is marked by this exploration. The st...

• Bullfighting.

  V THE GREAT MATADORS Ranking the great matadors is highly subjective. Most aficionados would agree, however, that the following names must be included in any list of the modern greats:Rodolfo Gaona, Armillita (Fermín Espinosa), and Arruza, of Mexico; and Belmonte, Manolete, and Antonio Ordoñez, of Spain. Few South Americans have made an impacton the international bullfighting world. Although several North Americans have attempted careers as matadors, only Sidney Franklin and John Fulton Short m...

• Joyner-Kersee Wins Heptathlon.

  With her knee throbbing once again, Joyner-Kersee taped up for the javelin throw. Her toss of 45.35 m (149 ft 9.5 in) was about 3 m (10 ft) short of her personalaverage, dropping her another 86 points off of the record pace. “It was disgusting,” she told Sports Illustrated. ”The knee was sore. I wasn't using the legs. I was just arming it.” One event remained: the 800 meters, the most demanding of the heptathlon's seven tests. It was also the event that had cost Joyner-Kersee the gold meda...

• Stamps and Stamp Collecting.

  Commonwealth has by far produced the greatest number of omnibus issues, the first being the George V Silver Jubilee series of 1935, another being the series releasedon July 29, 1981, to commemorate the wedding of Prince Charles and Lady Diana Frances Spencer. III COLLECTING Philately continues to increase in popularity. Today, the number of collectors around the world numbers in the millions. Unique and valuable stamps, apart from theiraesthetic or financial appeal to collectors, are also reco...

• Seattle - geography.

  Queen Anne Hill, north of downtown, was long isolated by its steep ascent but emerged as a fashionable residential area at the close of the 19th century. North of QueenAnne Hill and across the Lake Washington Ship Canal, Ballard was originally settled by Scandinavian immigrants. Annexed to Seattle in 1907, Ballard today is a residentialneighborhood with a strong Nordic heritage. To the east from Ballard along the north side of the Ship Canal, the neighborhoods of Fremont, Wallingford, and the Un...

• TPE SUR LES ATTENTATS DU 11 SEPTEMBRE

  La haine des musulmans contre les juifs augmentait alors de plus en plus et donna naissance aux musulmans extrémistes, c'est-à-dire les musulmans qui haïssenttotalement les juifs et qui n’ont comme objectif que de les tuer de toutes les manières possibles en faisant partie de groupe de terrorisme. Depuis, les islamistesinstruisent leurs enfants que mourir au kamikaze pour tuer des juifs leur fera mener au paradis. Cependant, les Américains offrent leur soutien politique aux Juifs et les islamist...

• Sexually Transmitted Infections.

  D Genital Herpes Genital herpes is caused by infection with the herpes simplex virus (HSV). Most cases of genital herpes are due to HSV type 2. Some cases, however, result from genitalinfections with HSV type 1, a common cause of cold sores. Genital herpes causes recurrent outbreaks of painful sores on the genitals, although the disease oftenremains dormant with no symptoms for long periods. In the United States, one in five individuals over the age of 12 is infected with HSV type 2, and the va...

• Bowling.

  In each of the first nine frames the bowler rolls one or two balls. If the bowler knocks down all ten pins with the first ball, he or she has rolled a strike, the best roll possible. An X is recorded on the scoresheet or screen, and the bowler receives ten points (the number of pins knocked down) plus a bonus of the number of pins thebowler knocks down in his or her next two bowls. The maximum possible score in a strike frame, therefore, is 30: the strike followed by two more strikes on subseq...

• Army. I INTRODUCTION Army, military land forces of a nation, assembled, drilled, disciplined,

  disappearance for several centuries of large standing armies in Europe. A Middle Ages Feudalism was based on a concept of local defense, each baron or landowner governing land that had been given him by the king, and each lord having his ownpersonal protective forces recruited from among men who worked for him. In return, each lord and his men were pledged to annual service to the monarch and couldbe called on in special instances, as in the defense of Christendom during the Crusades. National...

• Thomas Edison.

  While Edison was working on the electric light, he made a scientific discovery that would become important to future generations. Edison noticed that particles of carbonfrom the filament blackened the insides of his light bulbs. This effect was caused by the emission of electrons from the filament, although Edison made the discoverybefore he and other scientists knew the electron existed. Not until 1897 did British physicist J. J. Thomson prove that the blackening observed by Edison was caused b...

• Thomas Edison - USA History.

  While Edison was working on the electric light, he made a scientific discovery that would become important to future generations. Edison noticed that particles of carbonfrom the filament blackened the insides of his light bulbs. This effect was caused by the emission of electrons from the filament, although Edison made the discoverybefore he and other scientists knew the electron existed. Not until 1897 did British physicist J. J. Thomson prove that the blackening observed by Edison was caused b...

• James Buchanan.

  John Slidell. Slidell was instructed to insist that Mexico recognize the annexation of its former province, Texas, and that it pay certain long-standing claims of UnitedStates citizens. As payment for the claims, Slidell was told to press for the Mexican territory lying between Texas and the Pacific Ocean. The American demands werenot met, and soon afterward the Mexican War broke out in 1846. D3 Cuba While secretary of state, Buchanan also tried to further one of his favorite projects, the purc...

• James Buchanan

  John Slidell. Slidell was instructed to insist that Mexico recognize the annexation of its former province, Texas, and that it pay certain long-standing claims of UnitedStates citizens. As payment for the claims, Slidell was told to press for the Mexican territory lying between Texas and the Pacific Ocean. The American demands werenot met, and soon afterward the Mexican War broke out in 1846. D3 Cuba While secretary of state, Buchanan also tried to further one of his favorite projects, the purc...

• Chats à poil court: American short hair .

• Canadian Charter of Rights and Freedoms.

  with the Equal Protection Clause of the U.S. Constitution. The charter specifically notes the need to balance the rights of individuals against the needs of the community, and Canadian laws that impinge on civil liberties arejustified on this ground. The American constitution has no such clause. This leads American courts to interpret individual rights more absolutely and give less protectionto the needs of groups or society at large. For example, Americans have a greater right to express racist...

• Daughters of the American Revolution - DAR

  4 Celles-ci- doivent remplir une formule établissant leur lignage sur hull ou neuf géntrauon., afin de remonter à leur ancêtre patriote révolutionnaire, avec l'indication pré­ cise des dates des naissances, des mariages et des morts. Cet acharnement dans une recherche généa­ logique, qui parait anachronique et saugrenue à beaucoup de leurs compatriotes, manifeste, chez les DAR, une ten­ dance de la société américaine (dont les origines sont diverses)...

• Daughters of the American Revolution - DAR

• Santa Claus I INTRODUCTION Santa Claus, legendary bringer of gifts at Christmas.

  included such details as the names of the reindeer; Santa Claus's laughs, winks, and nods; and the method by which Saint Nicholas, referred to as an elf, returns up thechimney. (Moore's phrase “lays his finger aside of his nose” was drawn directly from Irving's 1809 description.) The American image of Santa Claus was further elaborated by illustrator Thomas Nast, who depicted a rotund Santa for Christmas issues of Harper's magazine from the 1860s to the 1880s. Nast added such details as Santa'...

• Rock Music I INTRODUCTION Carlos Santana Mexican-born guitarist Carlos Santana became a superstar in the late 1960s with a string of hits and an appearance at the famous Woodstock rock festival in 1969.

  point (a single pitch sustained through a progression of chords), and the parallel movement of chords, derived from a technique on the electric guitar known as bar-chording. Many elements of African American music have been a continuing source of influence on rock music. These characteristics include riffs (repeated patterns), backbeats (emphasizing the second and fourth beats of each measure; see Musical Rhythm: Pulse and Meter ), call-and-response patterns, blue notes (the use of certain...

• North America - Geography.

  D Climate Although North America has considerable climatic variety, five principal climatic regions can be identified. The northern two-thirds of Canada and Alaska, as well as all ofGreenland, have subarctic and arctic climates, in which long, dark, bitterly cold winters alternate with brief, mild summers. Most of the region, which receives relativelylittle precipitation, is covered with snow and ice during much of the year. A second climatic region is made up of the eastern two-thirds of the U...

• Dance I INTRODUCTION Dance Archive Films/BBC Worldwide Americas, Inc.

  features in its dance styles. The ordinary potential of the body can be expanded in dance, usually through long periods of specialized training. In ballet, for example, the dancer exercises to rotate,or turn out, the legs at the hips, making it possible to lift the leg high in an arabesque. In India, some dancers learn to choreograph their eyeballs and eyebrows.Costuming can extend the body's capabilities. Toe or pointe shoes, stilts, and flying harnesses are a few of the artificial aids employe...

• Thomas Jefferson I INTRODUCTION Thomas Jefferson (1743-1826), third president of the United States (1801-1809) and author of the Declaration of Independence.

  Jefferson was a poor speaker, but his literary talents made him a highly valued member of committees when resolutions and other public papers were drafted. Heemerged as the recognized author of the patriot cause in Virginia and indeed in the whole of the colonies. Jefferson's first public paper, however, was considered toostiff and formal, and it was rewritten. The paper was a response to the greeting of the new governor, Lord Botetourt, to the General Assembly. Jefferson, who nevertook criticis...

• Thomas Jefferson.

  Jefferson was a poor speaker, but his literary talents made him a highly valued member of committees when resolutions and other public papers were drafted. Heemerged as the recognized author of the patriot cause in Virginia and indeed in the whole of the colonies. Jefferson's first public paper, however, was considered toostiff and formal, and it was rewritten. The paper was a response to the greeting of the new governor, Lord Botetourt, to the General Assembly. Jefferson, who nevertook criticis...

• Thomas Jefferson

  Jefferson was a poor speaker, but his literary talents made him a highly valued member of committees when resolutions and other public papers were drafted. Heemerged as the recognized author of the patriot cause in Virginia and indeed in the whole of the colonies. Jefferson's first public paper, however, was considered toostiff and formal, and it was rewritten. The paper was a response to the greeting of the new governor, Lord Botetourt, to the General Assembly. Jefferson, who nevertook criticis...

• Thomas Jefferson - USA History.

  Jefferson was a poor speaker, but his literary talents made him a highly valued member of committees when resolutions and other public papers were drafted. Heemerged as the recognized author of the patriot cause in Virginia and indeed in the whole of the colonies. Jefferson's first public paper, however, was considered toostiff and formal, and it was rewritten. The paper was a response to the greeting of the new governor, Lord Botetourt, to the General Assembly. Jefferson, who nevertook criticis...

• Benjamin Harrison (1833-1901).

  homesteaders against pressure from the powerful railroads. He fought vigorously for Civil War veterans, supported high taxes on imports (called tariffs), payments todisabled and opposed the Chinese Exclusion Act, which stopped Chinese immigration to the U.S. for 10 years ( see Immigration: From 1840 to 1900 ). He also introduced 101 special pension and relief bills in six years. Harrison's name was well known by the Republican National Convention in 1884. In spite of this, Congressman and forme...

• Benjamin Harrison (1833-1901) - Histoire

  homesteaders against pressure from the powerful railroads. He fought vigorously for Civil War veterans, supported high taxes on imports (called tariffs), payments todisabled and opposed the Chinese Exclusion Act, which stopped Chinese immigration to the U.S. for 10 years ( see Immigration: From 1840 to 1900 ). He also introduced 101 special pension and relief bills in six years. Harrison's name was well known by the Republican National Convention in 1884. In spite of this, Congressman and forme...

• Race - biology.

  distributed as a cline, generally varying along a north-south line. Skin color is lightest in northern Europeans, especially in those who live around the Baltic Sea, andbecomes gradually darker as one moves toward southern Europe, the Mediterranean, the Middle East, and into northern Africa and northern subtropical Africa. Skin isdarkest in people who live in the tropical regions of Africa. The lack of clear-cut discontinuities makes any racial boundary based on skin color totally arbitrary. Sim...

• George Washington I INTRODUCTION George Washington (1732-1799), first president of the United States (1789-1797) and one of the most important leaders in United States history.

  A2 Promotion This was Washington’s first experience with the difficulties of raising troops while lacking equipment, clothing, and funds. Apparently he thought his efforts worthy ofsome recognition and successfully applied to Dinwiddie for a lieutenant colonel’s commission. He left Alexandria, Virginia, early in April with about 150 poorly equippedand half-trained troops. A3 First Battles Before he had advanced very far, Washington received news that the French had driven Trent’s men back from...

• George Washington.

  A2 Promotion This was Washington’s first experience with the difficulties of raising troops while lacking equipment, clothing, and funds. Apparently he thought his efforts worthy ofsome recognition and successfully applied to Dinwiddie for a lieutenant colonel’s commission. He left Alexandria, Virginia, early in April with about 150 poorly equippedand half-trained troops. A3 First Battles Before he had advanced very far, Washington received news that the French had driven Trent’s men back from...

• George Washington

  A2 Promotion This was Washington’s first experience with the difficulties of raising troops while lacking equipment, clothing, and funds. Apparently he thought his efforts worthy ofsome recognition and successfully applied to Dinwiddie for a lieutenant colonel’s commission. He left Alexandria, Virginia, early in April with about 150 poorly equippedand half-trained troops. A3 First Battles Before he had advanced very far, Washington received news that the French had driven Trent’s men back from...

• Birding - biology.

  swallows, and rock doves nest on buildings in cities, towns, and farms. The chimney swift has abandoned hollow trees for chimneys as a nest site in urban areas.Mallards and Canada geese—once exclusively wild, migratory species—now live year-round in the open spaces found in city parks and golf courses. Nearly all purplemartins, a songbird species that once used the abandoned nests of woodpeckers or the natural cavities of cliffs or dead trees, now live primarily in structures specificallyconstru...

• John F.

  by the United States, was unable to withstand the advance of Communist forces under Mao Zedong (Mao Tse-tung). By the end of 1949 government troops had beenoverwhelmingly defeated, and Chiang led his forces into exile on Taiwan. The triumphant Mao formed the People’s Republic of China. Truman’s critics, includingKennedy, charged that the administration had failed to support Chiang Kai-shek against the Communists. Kennedy easily won reelection to Congress in 1948 and 1950. In 1952 he decided to r...

• John F.

  by the United States, was unable to withstand the advance of Communist forces under Mao Zedong (Mao Tse-tung). By the end of 1949 government troops had beenoverwhelmingly defeated, and Chiang led his forces into exile on Taiwan. The triumphant Mao formed the People’s Republic of China. Truman’s critics, includingKennedy, charged that the administration had failed to support Chiang Kai-shek against the Communists. Kennedy easily won reelection to Congress in 1948 and 1950. In 1952 he decided to r...

• Venezuela - country.

  Venezuela has six navigable rivers. Of the thousand or more streams in the country, the majority flow into the Orinoco. The Orinoco flows east across central Venezuelaand drains approximately four-fifths of the total area of the country. With the tributaries—the Apure, Meta, and Negro rivers—it forms the outlet into the Atlantic Oceanfor the waters of much of the interior of Colombia, as well as of inland Venezuela. F Climate The climate of Venezuela is tropical on the Llanos and along the coas...

• Vietnam War.

  rigged, since about 150,000 more people voted in Saigon than were registered. Diem then deposed Bao Dai, who had been the only other candidate, and declaredSouth Vietnam to be an independent nation called the Republic of Vietnam (RVN), with himself as president and Saigon as its capital. Vietnamese Communists and manynon-Communist Vietnamese nationalists saw the creation of the RVN as an effort by the United States to interfere with the independence promised at Geneva. III THE BEGINNING OF THE...

• Vietnam War - History.

  rigged, since about 150,000 more people voted in Saigon than were registered. Diem then deposed Bao Dai, who had been the only other candidate, and declaredSouth Vietnam to be an independent nation called the Republic of Vietnam (RVN), with himself as president and Saigon as its capital. Vietnamese Communists and manynon-Communist Vietnamese nationalists saw the creation of the RVN as an effort by the United States to interfere with the independence promised at Geneva. III THE BEGINNING OF THE...

• Vietnam War - U.

  rigged, since about 150,000 more people voted in Saigon than were registered. Diem then deposed Bao Dai, who had been the only other candidate, and declaredSouth Vietnam to be an independent nation called the Republic of Vietnam (RVN), with himself as president and Saigon as its capital. Vietnamese Communists and manynon-Communist Vietnamese nationalists saw the creation of the RVN as an effort by the United States to interfere with the independence promised at Geneva. III THE BEGINNING OF THE...

• Michigan - geography.

  The interior location of Michigan in the northern part of North America results in a continental climate, characterized by four definite seasons with moist, mild to hotsummers and snowy, cold winters. Winds off of Lakes Michigan and Superior in winter create heavy snow accumulations in nearby areas. The tempering effects of LakeMichigan account for the presence of the state’s famous fruit-growing belt along the lake’s shore. Since the water is colder than the land in spring, the westerly windspa...