53 résultats pour "sendai"

• Sendai.

• Sendai.

• ROI ET LA REINE (Le) (résumé) de Ramon J. Sender

• Telecommunications.

  commonly referred to as wireless communications, use technologies such as cordless telephones, cellular radio telephones, pagers, and satellites. Wirelesscommunications offer increased mobility and flexibility. In the future some experts believe that wireless devices will also offer high-speed Internet access. C Wires and Cables Wires and cables were the original medium for telecommunications and are still the primary means for telephone connections. Wireline transmission evolved fromtelegraph...

• Internet.

  usually pays a fixed monthly fee for a dedicated connection. In exchange, the company providing the connection agrees to relay data between the user’s computer andthe Internet. Dial-up is the least expensive access technology, but it is also the least convenient. To use dial-up access, a subscriber must have a telephone modem, a device thatconnects a computer to the telephone system and is capable of converting data into sounds and sounds back into data. The user’s ISP provides software that con...

• Television.

  A charge-coupled device (CCD) can be much smaller than a camera tube and is much more durable. As a result, cameras with CCDs are more compact and portablethan those using a camera tube. The image they create is less vulnerable to distortion and is therefore clearer. In a CCD, the light from a scene strikes an array ofphotodiodes arranged on a silicon chip. Photodiodes are devices that conduct electricity when they are struck by light; they send this electricity to tiny capacitors. Thecapacitors...

• Respiratory System.

  rapidly, or laughs while swallowing, the swallowing reflex may not work, and food or fluid can enter the larynx. Food, fluid, or other substances in the larynx initiate acough reflex as the body attempts to clear the larynx of the obstruction. If the cough reflex does not work, a person can choke, a life-threatening situation. TheHeimlich maneuver is a technique used to clear a blocked larynx ( see First Aid). A surgical procedure called a tracheotomy is used to bypass the larynx and get air to...

• Space Exploration - astronomy.

  to produce 250,000 newtons (56,000 lb) of thrust. The Germans launched thousands of V-2s carrying explosives against targets in Britain and The Netherlands. Whilethey did not prove to be an effective weapon, V-2s did become the first human-made objects to reach altitudes above 80 km (50 mi)—the height at which outer spaceis considered to begin—before falling back to Earth. The V-2 inaugurated the era of modern rocketry. A2 Early Artificial Satellites During the years following World War II, the...

• Wireless Communications.

  were large, heavy units. After the invention of the transistor in 1948, radios shrank in size to small handheld radio transceivers. Public two-way radios with severalfrequency options are widely available as well. Usually limited in range to a few miles, these units are great aids for such mobile professionals as construction workers,film crews, event planners, and security personnel. Simpler two-way radios, called walkie-talkies, have been popular children’s toys for years. Most walkie-talkiesb...

• Census.

  Prior to any census, a census agency must develop an accurate list of addresses and maps to ensure that everyone is counted. The U.S. Census Bureau obtainsaddresses primarily from the United States Postal Service and from previous census address lists. It also works closely with state, local, and tribal governments tocompile accurate lists. Finally, census agencies often conduct an extensive marketing campaign before Census Day to remind the general population about theimportance of responding t...

• Japan - country.

  island’s fertile soils support agriculture and provide the vast majority of Japan’s pasturelands. In addition, Hokkaidō contains coal deposits, and the cold currents off itsshores supply cold-water fish. Winters are long and harsh, so most of Hokkaid ō is lightly settled, housing about 5 percent of Japan’s population on approximately 20 percent of its land area. However,its snowy winters and unspoiled natural beauty attract many skiers and tourists. Hokkaid ō is thought of as Japan’s northern fr...

• Observatory - astronomy.

  Ultraviolet radiation, X rays, and gamma rays have shorter wavelengths than visible light has. These types of radiation tell astronomers about the hottest and mostviolent phenomena in the universe. Earth’s atmosphere blocks most of this radiation, so astronomers must send their observatories above the atmosphere aboardballoons, rockets, or satellites. Ultraviolet telescopes are much like visible light telescopes, but X-ray telescopes must have special nested cylindrical mirrors to prevent Xrays...

• Network (computer science).

  computer. Since there is only one token in the network, only one computer can transmit information at a time. Token Ring networks are now quite rare. Most LANs nowuse Ethernet technology. International Business Machines Corporation (IBM), the company that invented Token Ring in the early 1980s, no longer promotes thetechnology. In the mid-1990s a new protocol called Asynchronous Transfer Mode (ATM) was introduced. This protocol encodes data in fixed-sized packets called cells rather thanvariable...

• Odyssey I INTRODUCTION Odyssey, ancient Greek epic poem in 24 books attributed to the poet Homer.

  Ulysses in the Cave of PolyphemusOn their return from the Trojan War, Odysseus (also known as Ulysses) and his men are taken prisoner by the one-eyedgiant Polyphemus, who is gradually eating them. After blinding Polyphemus, the remaining men escape by holding on tothe belly of the giant’s sheep. Knowing that the Greeks will try to escape, Polyphemus touches each sheep as it leaves thecave but fails to check underneath. This painting by 17th-century Flemish artist Jacob Jordaens is in the Pushkin...

• Articles of Confederation - U.

  trade, or any other pretence whatever. VIII ARTICLE IV The better to secure and perpetuate mutual friendship and intercourse among the people of the different states in this union, the free inhabitants of each of thesestates, paupers, vagabonds and fugitives from Justice excepted, shall be entitled to all privileges and immunities of free citizens in the several states; and the people ofeach state shall have free ingress and regress to and from any other state, and shall enjoy therein all the...

• Ear. I INTRODUCTION Ear, organ of hearing and balance. Only vertebrates, or animals

  line or rotates in any direction. Each canal also contains sensory areas with sensory hair cells that project into a cone-shaped cap of gelatin. Two of the semicircularcanals are in a vertical position and are used to detect vertical movement, such as jumping or falling. The third canal is horizontal and detects horizontal movement,such as turning or spinning. The action of the canals depends on the inertia of the fluid inside. When the motion of the body changes, the fluid lags behind, causing...

• Telephone.

  digits is dialed. The development of inexpensive and reliable amplification provided by the introduction of the transistor in the 1960s made practical the design of adialing system based on the transmission of relatively low power tones instead of the higher-power dial pulses. Today most telephones have push buttons instead of a rotary dial. Touch-Tone is an optional service, and telephone companies still maintain the ability to receive pulsedialing. Push-button telephones usually have a switch...

• Rocket.

  the vacuum of space, however, demonstrated that this belief was not true. In fact, rockets produce more thrust in the vacuum of space than on Earth. Air pressure andfriction with the air reduce a rocket’s thrust by about 10 percent on Earth as compared to the rocket’s performance in space. B Thrust and Efficiency Thrust is a measurement of the force of a rocket, or the amount of “push” exerted backward to move a rocket forward. Thrusts vary greatly from rocket to rocket.Engineers measure thrust...

• Rocket - astronomy.

  the vacuum of space, however, demonstrated that this belief was not true. In fact, rockets produce more thrust in the vacuum of space than on Earth. Air pressure andfriction with the air reduce a rocket’s thrust by about 10 percent on Earth as compared to the rocket’s performance in space. B Thrust and Efficiency Thrust is a measurement of the force of a rocket, or the amount of “push” exerted backward to move a rocket forward. Thrusts vary greatly from rocket to rocket.Engineers measure thrust...

• Fernsehen - Technik.

  3.1 Ikonoskop Das Ikonoskop ist die erste Bildspeicherröhre in der Geschichte der Fernsehtechnik gewesen. Sie wurde zwischen 1923 und Anfang 1924 von Wladimir Kosma Zworykinentwickelt. Das Ikonoskop hatte zahlreiche Nachteile. So benötigte man für die Erzeugung eines verwendbaren Signals eine extrem gute Beleuchtung. WennFernsehkameras in Studios bei kontrollierbaren Lichtverhältnissen eingesetzt wurden, war dieser Nachteil unerheblich. Allerdings war das Ikonoskop ungeeignet für dieAufnahme vo...

• Mapas mentales 1 INTRODUCCIÓN Mapas mentales, también llamados por algunos mapas cognitivos, son la expresión gráfica de las imágenes que el cerebro elabora del medio que le rodea, es decir, de las representaciones internas del espacio y sus propiedades que cada persona guarda en su memoria.

  ambiente a gran escala, suponiendo que las personas generan imágenes que les permiten fijar direcciones entre ciudades. Sin embargo, el término mapa cognitivo se debe al psicólogo conductista Edward C. Tolman y a su artículo, escrito en 1948, Cognitive Maps in Rats and Men , en el que concluyó que las ratas parecían poseer en sus cerebros algo así como un mapa de rutas que les permitía relacionar elementos espaciales y gracias a este, en últimotérmino, se determinaba su comportamiento. En 1966,...

• Iliad I INTRODUCTION The Abduction of Helen The Trojan War began with the abduction of Helen, the beautiful wife of the king of Sparta, by the Trojan prince Paris.

  Ajax Defends Greek ShipsThe Greek hero Ajax wields his spear in defense of Greek ships as Trojan warriors try to set the wooden vessels on firewith their torches. This encounter, shown in a late-18th-century illustration, occurs in Book 15 of the Iliad, an epicattributed to Greek poet Homer that recounts events from the Trojan War.Corbis Paris offers to fight a duel with Menelaus to settle the conflict. After an exchange of blows, Paris’s protector, the goddess Aphrodite, intervenes to save him....

• Computer Memory.

  been created, information can be retrieved but not changed. Newer technologies allow ROMs to be semi-permanent—that is, the information can be changed, but ittakes several seconds to make the change. For example, a FLASH memory acts like a ROM because values remain stored in memory, but the values can be changed. C External Memory External memory can generally be classified as either magnetic or optical, or a combination called magneto-optical. A magnetic storage device, such as a computer'shar...

• Electricity I INTRODUCTION Electricity, one of the basic forms of energy.

  electrons in the neutral object are attracted to the positive object. Some of these electrons flow to the side of the neutral object that is nearest to the positive object.This side of the neutral object accumulates electrons and becomes negatively charged. Because electrons leave the far side of the neutral object while its protonsremain stationary, that side becomes positively charged. Since the negatively charged side of the neutral object is closest to the positive object, the attraction bet...

• Olympic Games.

  the next decade nearly all the ISFs abolished the distinction between amateurs and professionals, accepting so-called open Games. One of the most visible examples of the policy change came in 1992, when professional players from the National Basketball Association (NBA) were permitted to play inthe Summer Games in Barcelona, Spain. Professionals from the National Hockey League (NHL) became eligible to participate beginning with the 1998 Winter Olympics inNagano, Japan. V CEREMONIES The Olymp...

• Football.

  C Special Teams Each team has players who enter the game during special plays such as kickoffs, field goals, punts, and returns. The kicker kicks off at the beginning of a game or half,and after his team has scored. The kicker also scores points for the offensive team by kicking the ball through the goalpost’s vertical posts, also known as the uprights;these scores are called field goals. When the offensive team must surrender the ball to the opponents, a punter comes in to kick the ball downfi...

• 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...

• Gehrig Bids Farewell.

  “We want Lou! We want Lou!” the crowd chanted. The emcee looked over to Gehrig. Gehrig slowly shook his head from side to side. Workers began removing thesound equipment. Gehrig headed for the dugout but then turned around. McCarthy said something to him, which the New York Times lip-read as, “Come on, Lou, just rap out another.” Gehrig held up his hand to get the crowd's attention, swallowed hard, and forced a smile. Fiddling with his cap and scratching at the turf with his cleats, he spo...

• Radar.

  gathers the weak returning radar signals and converts them into an electric current. Because a radar antenna may both transmit and receive signals, the duplexerdetermines whether the antenna is connected to the receiver or the transmitter. The receiver determines whether the signal should be reported and often does furtheranalysis before sending the results to the display. The display conveys the results to the human operator through a visual display or an audible signal. B1 The Antenna The rec...

• Fußball-Bundesliga 1 EINLEITUNG Fußball-Bundesliga, höchste Spielklasse im deutschen Profifußball, gegründet 1963.

  einem gescheiterten Wechsel vom belgischen Erstligisten FC Lüttich zum französischen Zweitligisten Dünkirchen gegen die bestehenden Ausländerregelungen geklagt undvor dem Europäischen Gerichtshof Recht bekommen hatte. Das Wegfallen von Ausländerbeschränkungen für die Vereine führte dazu, dass eine Vielzahl ausländischer Profisvon Bundesligaclubs verpflichtet wurden. Dieses Urteil, aber auch die unterschiedlichen Einnahmen aus Sponsoren- und TV-Geldern führten zu einer immer größerwerdenden finan...

• EM Forster, A passage to India

  helpless victim, however, partially to retain her dignity and partially because she remains unsure of the actual legitimacy of her charges. Two significant forces trouble Adela: ___The first is her doubt that Aziz is guilty of the crime with which she has charged him, and she even tells Ronny that she believes she has made a mistake. Mrs. Moore confirms this doubt, definitively stating to Adela that Aziz is innocent. Her statement contains great significance, for Mrs. Moore serves as a paragon o...

• Excerpt from Love's Labour's Lost - anthology.

  BEROWNE. I could put thee in comfort—not by two that I know.Thou makest the triumviry, the corner-cap of society,The shape of Love's Tyburn, that hangs up simplicity. LONGAVILLE. I fear these stubborn lines lack power to move.(Reading ) “O sweet Maria, empress of my love!”— These numbers will I tear, and write in prose.He tears the paper BEROWNE. O, rhymes are guards on wanton Cupid's hose;Disfigure not his shop. LONGAVILLE. ( taking another paper ) This same shall go: (Reading ) “Did not the he...

• Excerpt from The Merry Wives of Windsor - anthology.

  MISTRESS FORD. O sweet Sir John! FALSTAFF. Mistress Ford, I cannot cog, I cannot prate, Mistress Ford. Now shall I sin in my wish: I would thy husband were dead. I'll speak it before the best lord, Iwould make thee my lady. MISTRESS FORD. I your lady, Sir John? Alas, I should be a pitiful lady. FALSTAFF. Let the court of France show me such another. I see how thine eye would emulate the diamond. Thou hast the right arched beauty of the brow thatbecomes the ship-tire, the tire-valiant, or any tir...

• Natural Satellite - astronomy.

  Titan, Saturn’s largest moon, also has few impact craters. Although icy volcanism from water and ammonia may occur along with some tectonic activity, Titan’s youngsurface is most likely the result of weather processes. Titan’s dense, cold atmosphere precipitates particles of complex organic molecules that accumulate as dunes andmountains. Methane rain erodes the surface and creates lakes at the moon’s poles. Triton’s young surface also may result from processes in its atmosphere, as well aserupt...

• Slowenien - geographie.

  Sprache ausstrahlende Anstalt Radiotelevizija Ljubljana . Der Empfang dieser Sender ist gebührenpflichtig; ein Teil der Kosten wird durch Werbung aufgefangen. 5 VERWALTUNG UND POLITIK Slowenien ist gemäß der Verfassung von 1991 eine parlamentarische Republik. Die Loslösung von Jugoslawien erfolgte durch ein Referendum vom 23. Dezember 1990, beidem 90 Prozent der Bevölkerung für die Unabhängigkeit von der jugoslawischen Föderation stimmte. Nationalfeiertage sind der 25. Juni (Tag der Souveräni...

• Hardware (computer).

  Magnetic tape drives use magnetic tape similar to the tape used in VCR cassettes. Tape drives have a very slow read/write time, but have a very high capacity; in fact,their capacity is second only to hard disk drives. Tape drives are mainly used to back up data. Compact disc drives store information on pits burned into the surface of a disc of reflective material ( see CD-ROM). CD-ROMs can store up to 737 megabytes (MB) of data. A Compact Disc-Recordable (CD-R) or Compact Disc-ReWritable (CD-RW)...

• French and Indian War.

  Virginia as well as the French governor-general of Canada had attempted to seize their lands. After receiving large presents of supplies and arms, the Iroquoisgrudgingly renewed their alliances with the British colonies. Delegates then moved on to plan other defensive measures. An important topic was a plan of union developed by Benjamin Franklin. The Albany Plan, as it became known, proposed a single institution to govern all of the Britishcolonies in America. Under the plan, each colony would...

• French and Indian War - Canadian History.

  Virginia as well as the French governor-general of Canada had attempted to seize their lands. After receiving large presents of supplies and arms, the Iroquoisgrudgingly renewed their alliances with the British colonies. Delegates then moved on to plan other defensive measures. An important topic was a plan of union developed by Benjamin Franklin. The Albany Plan, as it became known, proposed a single institution to govern all of the Britishcolonies in America. Under the plan, each colony would...

• Winston Churchill I INTRODUCTION Winston Churchill (1874-1965), British politician and prime minister of the United Kingdom (1940-1945, 1951-1955), widely regarded as the greatest British leader of the 20th century.

  sufficient tools to break the stalemate on the western front and he worked on developing armored fighting vehicles (tanks) to break the deadlock and end theslaughter. As the lines hardened on the western front, Churchill focused on a campaign to force open the Dardanelles Strait, controlled by the Ottoman Empire, to give the Allies adirect route to Russia through the Black Sea. Such a move would bring much-needed supplies to the Russian armies and eliminate the Ottomans from the war. Whenthe nav...

• Winston Churchill.

  sufficient tools to break the stalemate on the western front and he worked on developing armored fighting vehicles (tanks) to break the deadlock and end theslaughter. As the lines hardened on the western front, Churchill focused on a campaign to force open the Dardanelles Strait, controlled by the Ottoman Empire, to give the Allies adirect route to Russia through the Black Sea. Such a move would bring much-needed supplies to the Russian armies and eliminate the Ottomans from the war. Whenthe nav...

• Winston Churchill .

  sufficient tools to break the stalemate on the western front and he worked on developing armored fighting vehicles (tanks) to break the deadlock and end theslaughter. As the lines hardened on the western front, Churchill focused on a campaign to force open the Dardanelles Strait, controlled by the Ottoman Empire, to give the Allies adirect route to Russia through the Black Sea. Such a move would bring much-needed supplies to the Russian armies and eliminate the Ottomans from the war. Whenthe nav...

• Spider (arthropod) - biology.

  The spider’s abdomen is soft and saclike. On the underside of the tip of the abdomen are three pairs of spinnerets. Each spinneret is studded with many fine, hairliketubes called spigots, which produce a variety of silk threads. The spigots lead to several large silk glands inside the abdomen. Silk is formed as a liquid inside theseabdominal glands. As the silk is drawn out through the spigots, protein molecules within the silk line up parallel to one another, causing the silk to harden and form...

• Automobile.

  Electric motors have been used to power automobiles since the late 1800s. Electric power supplied by batteries runs the motor, which rotates a driveshaft, the shaftthat transmits engine power to the axles. Commercial electric car models for specialized purposes were available in the 1980s. General Motors Corporation introduced amass-production all-electric car in the mid-1990s. Automobiles that combine two or more types of engines are called hybrids. A typical hybrid is an electric motor with ba...

• Health Insurance.

  needs services. Essentially, individuals make regular payments to the plan rather than having to pay especially large sums at any one time in the event of sudden illnessor injury. In this way, the group as a whole funds expensive treatments for those few who need them. Many people believe that in addition to providing financial stability, health insurance can promote good health. Supporters of this idea claim that by lowering thepersonal cost of services, insurance induces individuals to seek he...

• Mammal - biology.

  On land, mammals live in many different habitats, and at a wide range of altitudes. Many mammals dig burrows as refuges or as places to raise their young, but somehave developed a largely subterranean lifestyle, feeding on small animals or plant roots beneath the soil's surface. These animals, including moles and mole-rats, digthrough the ground either with spadelike front paws or with their teeth, and they detect danger by being highly sensitive to vibrations transmitted through the soil.Most m...

• United Nations.

  and programs to carry out its recommendations. It elects members to serve on certain agencies and programs, and it coordinates those programs through variouscommittees. B Security Council The Security Council is the most powerful body in the UN. It is responsible for maintaining international peace, and for restoring peace when conflicts arise. Its decisionsare binding on all UN members and have the force of international law. The Security Council has the power to define what is a threat to sec...

• Texas - geography.

  D Climate Eastern Texas has a humid subtropical climate, while a semiarid low latitude climate prevails in central areas, and an arid low latitude climate in the extreme west. Alongthe coast the climate is much milder, with fewer extremes in temperatures. Hurricanes sometimes hit the coastal areas of Texas from late July through September, andtornadoes are common in north-central Texas in April and May. D1 Temperature Summers are hot throughout the state, and temperatures exceeding 35°C (95°F)...