417 résultats pour "leads"

• 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...

• Radioactivity I INTRODUCTION Marie Curie Working with her husband, Pierre Curie, French physicist Marie Curie discovered the radioactive elements polonium and radium in 1898.

  Rutherford when he allowed an alpha-emitting substance to decay near an evacuated thin-glass vessel. The alpha particles were able to penetrate the glass and werethen trapped in the vessel, and within a few days the presence of elemental helium was demonstrated by use of a spectroscope. Beta particles were subsequentlyshown to be electrons, and gamma rays to consist of electromagnetic radiation of the same nature as X rays but of considerably greater energy. A The Nuclear Hypothesis Rutherford...

• North Korea - country.

  IV EDUCATION AND CULTURAL ACTIVITY Education and culture in North Korea are under state control and are utilized by the governing Korean Workers’ Party regime to indoctrinate and foster its ideology. A Education Education is free and compulsory in North Korea for the first ten years of schooling. In the late 1980s, some 1.5 million pupils were enrolled annually in elementaryschools, and another 2.8 million students attended vocational and secondary schools. Statistics for subsequent years are...

• Kazakhstan - country.

  mismanagement. Between 1949 and 1991 the Soviet government conducted about 70 percent of all of its nuclear testing in Kazakhstan, mostly in the northeastern area near the city ofSemipalatinsk (now Semey). Nearly 500 nuclear explosions occurred both above and below ground near Semipalatinsk, while more than 40 nuclear detonationsoccurred at other testing grounds in western Kazakhstan and in the Qyzylqum desert. More than 1 million of Kazakhstan’s inhabitants were exposed to dangerous levelsof ra...

• Ontario - Geography.

  governed Ontario’s initial settlement and development. The province’s most important river is the St. Lawrence. Its route was much improved and enlarged by dredgingand canal building in the mid-20th century. This enabled large ocean-going vessels to reach Great Lake ports ( see St. Lawrence Seaway). The Ottawa River was an important early route to the interior for fur traders and timber merchants. The Niagara River, because of its falls, is a great center of hydroelectric power as well as aninte...

• Ontario - Canadian History.

  governed Ontario’s initial settlement and development. The province’s most important river is the St. Lawrence. Its route was much improved and enlarged by dredgingand canal building in the mid-20th century. This enabled large ocean-going vessels to reach Great Lake ports ( see St. Lawrence Seaway). The Ottawa River was an important early route to the interior for fur traders and timber merchants. The Niagara River, because of its falls, is a great center of hydroelectric power as well as aninte...

• Europe .

  D Vegetation Although much of Europe, particularly the west, was originally covered by forest, the vegetation has been transformed by human habitation and the clearing of land.Only in the most northerly mountains and in parts of north central European Russia has the forest cover been relatively unaffected by human activity. On the otherhand, a considerable amount of Europe is covered by woodland that has been planted or has reoccupied cleared lands. The largest vegetation zone in Europe, cuttin...

• Europe - Geography.

  D Vegetation Although much of Europe, particularly the west, was originally covered by forest, the vegetation has been transformed by human habitation and the clearing of land.Only in the most northerly mountains and in parts of north central European Russia has the forest cover been relatively unaffected by human activity. On the otherhand, a considerable amount of Europe is covered by woodland that has been planted or has reoccupied cleared lands. The largest vegetation zone in Europe, cuttin...

• Denmark - country.

  forests, which cover just 11.6 percent of the country, include conifers (mainly fir, spruce, larch, and pine), beech, oak, birch, and ash. Several varieties of ferns andmosses common to the northern European mainland are also found. Wild animals are scarce. Natural animal life is limited to deer and small animals such as foxes,squirrels, hares, wild ducks, pheasants, and partridges. Numerous species of freshwater fish live in Denmark’s streams and lakes. F Environmental Issues Considered highly...

• 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...

• Mohandas Gandhi.

  released two years later because of failing health. By 1944 the Indian struggle for independence was in its final stages, the British government having agreed to independence on condition that the two contendingnationalist groups, the Muslim League and the Congress Party, should resolve their differences. Gandhi stood steadfastly against the partition of India but ultimately hadto agree, in the hope that internal peace would be achieved after the Muslim demand for separation had been satisfied....

• Mohandas Gandhi - History.

  released two years later because of failing health. By 1944 the Indian struggle for independence was in its final stages, the British government having agreed to independence on condition that the two contendingnationalist groups, the Muslim League and the Congress Party, should resolve their differences. Gandhi stood steadfastly against the partition of India but ultimately hadto agree, in the hope that internal peace would be achieved after the Muslim demand for separation had been satisfied....

• verbes irréguliers

  Hit Hit Hit Frapper Hit Hit Hit Frapper Hold Held Held Tenir Hold Held Held Tenir Keep Kept Kept Garder Keep Kept Kept Garder Know Knew Known Savoir Know Knew Known Savoir Lay Laid Laid Disposer Lay Laid Laid Disposer Lead Led Led Guider Lead Led Led Guider Learn Learnt Learnt Apprendre Learn Learnt Learnt Apprendre Leave Lef Left Partir Leave Lef Left Partir Lend Lent Lent Prêter Lend Lent Lent Prêter Let Let Let Permettre Let Let Let Permettre Lose Lost Lost Perdre Lose Lost Lost Perdre Make M...

• Pollution.

  One of the greatest challenges caused by air pollution is global warming, an increase in Earth’s temperature due to the buildup of certain atmospheric gases such ascarbon dioxide. With the heavy use of fossil fuels in the 20th century, atmospheric concentrations of carbon dioxide have risen dramatically. Carbon dioxide and othergases, known as greenhouse gases, reduce the escape of heat from the planet without blocking radiation coming from the Sun. Because of this greenhouse effect,average glob...

• Finland - country.

  Productive forestland is the most valuable natural resource of Finland. Spruce, pine, and silver birch are the principal trees used to manufacture wood and pulp andpaper products. Finland lacks coal and petroleum resources and is a net importer of energy resources. However, Finland does have significant deposits of peat, which is cut from thenumerous peat bogs that cover much of the north. Peat is an important heat source for homes, and it provides about 7 percent of Finland’s electricity needs....

• Labor Union.

  B The Legal Environment The legal environment, which permits certain types of union activities and prohibits others, also influences the extent of union organization. States with right-to-worklaws have much lower unionization rates than other states. In the United States, the states with the lowest unionization rates are North Carolina, South Carolina, SouthDakota, and Arkansas—states that have right-to-work laws. In 2000 the unionization rate in these states ranged from 4.44 percent to 6.7 per...

• South Korea - country.

  forest habitat, and overhunting. The Siberian tiger has not been sighted in the wild in South Korea since the 1920s; the Asiatic black bear can still be found in someremote mountain areas. Several species of deer are indigenous to the peninsula, including the roe deer, water deer, and Siberian musk deer. The musk deer, which hasbeen overhunted for its musk glands, is legally protected as a threatened species. Smaller mammals indigenous to the peninsula include the wild boar, red fox, badger,rabb...

• South Dakota - geography.

  C1 Temperatures Average January temperatures are everywhere less than -4° C (24° F) and decrease to less than -12° C (10° F) in some northern sections. The January temperaturesin Sioux Falls range from -16° to -4° C (3° to 24° F). Nightime lows of -29° C (-20° F) occur during most winters. July averages are in the low and middle 20°s C (lowand middle 70°s F) throughout most of the state, and are somewhat lower in the Black Hills. The average temperature range in Sioux Falls in July is 17° to 30...

• South Dakota - USA History.

  C1 Temperatures Average January temperatures are everywhere less than -4° C (24° F) and decrease to less than -12° C (10° F) in some northern sections. The January temperaturesin Sioux Falls range from -16° to -4° C (3° to 24° F). Nightime lows of -29° C (-20° F) occur during most winters. July averages are in the low and middle 20°s C (lowand middle 70°s F) throughout most of the state, and are somewhat lower in the Black Hills. The average temperature range in Sioux Falls in July is 17° to 30...

• Congress of the United States.

  senator, a person must be at least 30 years old, a citizen for nine years, and a resident of the state from which he or she is elected. Most members of Congress haveserved in state legislatures, city councils, or other elected bodies. See United States Senate: Campaigning for the Senate ; United States House of Representatives: Campaigning for the House. The 435 House seats are divided among the states in proportion to each state’s population. Every state is guaranteed at least one seat. State...

• Psychology.

  Clinical psychology is dedicated to the study, diagnosis, and treatment of mental illnesses and other emotional or behavioral disorders. More psychologists work in this field than in any other branch of psychology. In hospitals, community clinics, schools, and in private practice, they use interviews and tests to diagnose depression,anxiety disorders, schizophrenia, and other mental illnesses. People with these psychological disorders often suffer terribly. They experience disturbing symptoms t...

• Constitution of the United States.

  chief executive should have the power to veto legislation, should be elected by Congress or the people, should be eligible to run for reelection, and should command thearmed forces. Some delegates even hoped for a limited monarchy. Not until September 8, more than three months after the convention started, did the final shape ofthe presidency emerge: a single leader, elected to a four-year term and eligible for reelection, with authority to veto bills enacted by Congress. The president was alsog...

• Constitution of the United States - U.

  chief executive should have the power to veto legislation, should be elected by Congress or the people, should be eligible to run for reelection, and should command thearmed forces. Some delegates even hoped for a limited monarchy. Not until September 8, more than three months after the convention started, did the final shape ofthe presidency emerge: a single leader, elected to a four-year term and eligible for reelection, with authority to veto bills enacted by Congress. The president was alsog...

• World War I .

  and troops to Europe from the United States and other overseas sources. In 1914 Britain implemented a sea blockade of Germany to prevent the delivery of importssuch as food and war materials. The same year, Germany began using submarines to disrupt Allied seaborne traffic and prevent supplies from reaching Britain. In 1915Germany instituted a submarine blockade around Britain. From February 1915 to September 1915 and again in 1917, Germany used unrestricted submarine warfare,sinking ships withou...

• Air Pollution.

  Several pollutants attack the ozone layer. Chief among them is the class of chemicals known as chlorofluorocarbons (CFCs), formerly used as refrigerants (notably in airconditioners), as agents in several manufacturing processes, and as propellants in spray cans. CFC molecules are virtually indestructible until they reach thestratosphere. Here, intense ultraviolet radiation breaks the CFC molecules apart, releasing the chlorine atoms they contain. These chlorine atoms begin reacting withozone, br...

• Central America - Geography.

  F Animal Life Most of the animal life of Central America is similar to that of South America, but some animals have ties with North America. The marley and opossum have links withSouth America, as do the jaguar, ocelot, jaguarundi, and margay, which are members of the cat family. In contrast, the puma, gray fox, and coyote are of NorthAmerican origin. The armadillo, anteater, and sloth have ties to the south, deer to the north. The large manatee, an aquatic plant eater, survives in the isolated...

• Perception (psychology).

  A4 Closure According to the law of closure, we prefer complete forms to incomplete forms. Thus, in the drawing below, we mentally close the gaps and perceive a picture of a duck. This tendency allows us to perceive whole objects from incomplete and imperfect forms. A5 Common Fate The law of common fate leads us to group together objects that move in the same direction. In the following illustration, imagine that three of the balls are moving in one direction, and two of the balls are mo...

• Kyrgyzstan - country.

  are Bishkek, the capital, located on the Chu River in the far north; and Osh, located in the Fergana Valley. A Ethnic Groups Ethnic Kyrgyz make up about 65 percent of the population of Kyrgyzstan. Uzbeks, who live primarily in the Fergana Valley, constitute about 14 percent of thepopulation. Russians, who live principally in Bishkek and other industrial centers, make up about 13 percent of the population. Other ethnic groups include Hui (ChineseMuslims, also known as Dungans), Ukrainians, Uygur...

• Child Development.

  developmental scientists have studied how cultural values guide the skills and attitudes that children acquire as they mature, and how brain maturation influences thedevelopment of thinking and feeling. For a more detailed discussion of child development theories, see the Theories of Child Development section of this article. III BASIC QUESTIONS A Nature and Nurture Scholars have long debated the relative importance of nature (hereditary influences) and nurture (environmental influences) i...

• Islam.

  commanded to face the Kaaba, an ancient shrine in the city of Mecca. The Qur’an also refers to the recitation of parts of the Qur’an as a form of prayer. However, evenwith its numerous references, the Qur’an alone does not give exact instructions for this central ritual of prayer. The most detailed descriptions of the rituals for prayer derive from the example set by the prophet Muhammad and are preserved in later Islamic traditions. Somedetails of these rituals vary, however all Muslims agree t...

• Alabama (state) - geography.

  indentations along the coast are measured, the state’s shoreline is 977 km (607 mi) long. It includes the shores of Mobile Bay, an inlet 56 km (35 mi) long at the mouthof the Mobile River. Barrier beaches partly block the entrance to the bay, leaving narrow openings on either side of Dauphin Island. Dauphin and other islands alongAlabama’s coast west of Mobile Bay are separated from the mainland by Mississippi Sound. D Climate Alabama has a humid subtropical climate, with short, relatively mild...

• Alabama (state) - USA History.

  indentations along the coast are measured, the state’s shoreline is 977 km (607 mi) long. It includes the shores of Mobile Bay, an inlet 56 km (35 mi) long at the mouthof the Mobile River. Barrier beaches partly block the entrance to the bay, leaving narrow openings on either side of Dauphin Island. Dauphin and other islands alongAlabama’s coast west of Mobile Bay are separated from the mainland by Mississippi Sound. D Climate Alabama has a humid subtropical climate, with short, relatively mild...

• Argentina - country.

  Patagonia lies in the rain shadow of the Andes and so receives little moisture. As a result it is used primarily for grazing sheep, although some crops are grown on smallfarms in irrigated valleys. Several major oil fields also are in Patagonia. At the southern tip of Patagonia is Tierra del Fuego, a large mountainous island shared byArgentina and Chile. B Rivers and Lakes Most of Argentina’s rivers empty into the Atlantic Ocean. Three rivers—the Paraná, Paraguay, and Uruguay—flow generally sou...

• Guatemala - country.

  C Climate The climate of Guatemala varies according to elevation, from hot coastal plains to cold mountain heights. Most of the population lives between 900 and 2,400 m (3,000and 8,000 ft) above sea level, where there are warm days and cool nights with average annual temperatures of 20°C (68°F). The coastal regions are hot and humid,with average annual temperatures of 28°C (83°F). A rainy season, from May through October, is sometimes called “winter” because it brings cloudy afternoons andlower...

• 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...

• LES LEADERS D'OPINIONS SONT-ILS RÉELLEMENT INFLUENTS DANS NOTRE COMPORTEMENT D'ACHAT ?

  Étape 2 : Cibler les leaders d’opinion dans un marché - Mesurer le leadership de la population selon les catégories de produits - Sélectionner les leaders Étape 3 : Cibler la communication marketing - Choisir la cible pour la communication - Décrire ses attitudes et valeurs, ses caractéristiques sociodémographiques, et Comportementales - Connaître ses critères de choix Étape 4 : Bâtir un plan média spécifique - Choisir les médias et supports . Pour répondre à notre question, j'ai pris en co...

• Vous et les autres ÊTES-VOUS UN LEADER? Avez-vous assez de charisme pour influencer votre groupe d'amis, diriger vos subordonnés, tenir...

  Vous et les autres ÊTES-VOUS UN LEADER? Avez-vous assez de charisme pour influencer votre groupe d'amis, diriger vos subordonnés, tenir les rênes de la-famille, lancer un nouveau courant philosophique ou politique, être à la tête de votre équipe de football? Bref, êtes-vous un véri. table leader, ou bien aimez-vous vous considérer comme tel? Vous le saurez en effectuant ce test, qui a pour but de décou­ vrir si vous avez les atouts nécessaires pour vous distinguer du commun des mortels et pour...

• La séparation des pouvoirs en Grande-Bretagne

  s'agit alors d'une réciprocité d'action de chacun des pouvoirs l'un sur l'autre. En effet, de façon générale, l'action du législatif sur l'exécutif se réalise parl'intermédiaire du contrôle que les chambres exercent sur l'activité ministérielle.La sanction de ce contrôle est la responsabilité des ministres devant le Parlement. Cette responsabilité peut être mise en jeu à raison de tout acte accompli par leministre dans l'exercice de ses attributions et alors même que l'acte serait parfaitement l...

• Histoire L'EUROPE DE L'EST

  L'Europe de l'Est Je syndicat, décréta la loi martiale (1981- 1983) et fit dissoudre Je syndicat, pour éviter une inter­ vention militaire soviétique. Ses tentatives de ré­ forme de J'économie échouèrent. Après Je retrait de Moscou des affaires est-européennes, en 1989, So/idarnosc, redevenu légal, a remporté triomphalement les élections législatives. Brièvement président, de 1989 à 1990, le général Jaruzelski fut remplacé en décembre 1990 par Lech Walesa,...

• Sir Mackenzie Bowell.

  government. B Retirement Bowell's political career was not quite over. He remained Conservative leader in the Senate until 1906. He did not forgive his rebellious colleagues, even when some ofthem joined him in the Senate. In 1905 he reasserted in a speech that they had been “a nest of traitors.” Even his retirement in 1906 struck a bitter note. TheConservative senators elected one senator to succeed Bowell, but not before another senator had been led by Bowell to expect the position. Microsof...

• Sir Mackenzie Bowell - Canadian History.

  government. B Retirement Bowell's political career was not quite over. He remained Conservative leader in the Senate until 1906. He did not forgive his rebellious colleagues, even when some ofthem joined him in the Senate. In 1905 he reasserted in a speech that they had been “a nest of traitors.” Even his retirement in 1906 struck a bitter note. TheConservative senators elected one senator to succeed Bowell, but not before another senator had been led by Bowell to expect the position. Microsof...

• Haitian Slave Revolt.

  V EXTERNAL EFFECTS The Haitian revolt and independence had far-reaching effects on the United States, as well as other nearby countries and colonies. During the turmoil, many refugeesfled the island, pouring into seaports in the United States and the colony of Louisiana. These refugees from Saint-Domingue—white planters, mulatto artisans, and someAfrican slaves—brought with them their language, religion, laws, newspapers, education, art, and their skills at growing sugar, all of which strongly...

• Ho Chi Minh

  Il prend de l'autorité, regroupe autour de lui les exilés vietnamiens et fonde le " parti de la jeunesse ", le Than Nienh, dont unhebdomadaire va bientôt répandre la doctrine, plus nationaliste d'ailleurs que marxiste. Mais bientôt il pose avec ses deuxpremiers lieutenants, Hong Son et Hô Tung Mau, les bases du Parti communiste indochinois (PCI). Celui-ci ne sera pourtant crééofficiellement que trois ans plus tard, le 3 février 1930, après deux nouveaux séjours de Nguyen Ai Quoc à Moscou et un v...

• Mao Zedong.

  outside the government was also muted because the educated elite remembered the turmoil of the “Hundred Flowers” and “Antirightist” campaigns of 1957. Mao’srelationship with intellectuals was an uneasy one, and he was critical of the gap between the lives of the urban educated elite and the rural masses. These tensions wereamong the underlying causes of the Cultural Revolution, a period of social unrest and political persecution launched by Mao in 1966. Mao mobilized youth into the RedGuards to...

• Mao Zedong - History.

  outside the government was also muted because the educated elite remembered the turmoil of the “Hundred Flowers” and “Antirightist” campaigns of 1957. Mao’srelationship with intellectuals was an uneasy one, and he was critical of the gap between the lives of the urban educated elite and the rural masses. These tensions wereamong the underlying causes of the Cultural Revolution, a period of social unrest and political persecution launched by Mao in 1966. Mao mobilized youth into the RedGuards to...