Monday, August 3, 2009

Why Languages Die

Languages have disappeared throughout history, but the scale of language death in modern times is unprecedented. Linguists estimate that about half the world’s languages died out in the 500-year period from 1490 to 1990. A variety of factors contributed to this trend of language extinction.

Historically, the main cause of language extinction has been the movement of people from one region to another. Humans have always migrated, seeking more favorable lands or fleeing adverse conditions, and they often move into territories already occupied. In some cases, as in India, distinct linguistic and cultural groups coexist for centuries. More typically, the dominant group displaces the weaker one, either by making the people move, by forcing them to use the new language, or by killing them off.

In Western Europe, for example, all languages are related with the exception of Basque, which is spoken in north central Spain and southwestern France. Linguists believe Basque is the last of many languages that once existed across Europe and were forced out by the arrival of Indo-Europeans beginning about 2000 BC. Indo-European languages adopted few Basque words, if any, suggesting that the groups did not peacefully coexist for any length of time.

Government policies have also contributed to the decline or death of many minority languages by restricting their use. For example, the United States in the 19th and early 20th centuries often took children away from their Native American parents and sent them to boarding schools, where they were forced to learn English. Children from different tribes were typically grouped together so English would be their only common language. Only about half of the 300 indigenous languages spoken in North America when the Europeans first arrived are still in use. Australia enacted similar policies to assimilate Aboriginal peoples. In the former Union of Soviet Socialist Republics (USSR), many indigenous populations across the nation’s vast expanse were subjected to Russification programs during the 1940s and 1950s. These programs sought to teach children the Russian language and Russian cultural norms at the expense of their native languages and identities.

Efforts to limit language diversity are still common in some parts of the world. For example, the southeastern African nation of Tanzania encourages people to abandon their local languages for Swahili, which is widely spoken and officially sanctioned. This policy, like others in place in East Africa, is designed to encourage a sense of national identity in an ethnically and culturally diverse country.


Even nations that do not actively seek to hasten the demise of local languages typically implement a range of policies that encourage language uniformity. All nations, for example, limit the number of languages that may be used in official proceedings. In India, where more than 350 languages are spoken, only 2 are nationally sanctioned: English and Hindi. Only a few hundred languages receive official recognition around the world.

One reason most nations officially sanction just one or two languages is cost. It is simply less expensive to raise armies, collect taxes, and provide basic social services using a few languages, rather than many. Even when the will to preserve minority languages is present, the cost of providing government services or educational materials in multiple languages can be significant.

The extended reach of mass media, such as satellite television beamed to the most remote corners of the globe, encourages the spread of a few chosen languages. The Internet offers people around the world information and entertainment, but most materials are available only in the most common languages. Minority language communities must therefore adopt the language of the majority to learn about the world.

Perhaps the most important cause of language extinction is the decision of native speakers to shift to a majority language because it offers more prestige and economic opportunities. Immigrants in the United States are often proud of their ability to speak English and even prouder of their children’s native command of the language. Seeking a better life, some Native Americans in Latin America are discarding their local tongues for Spanish, and indigenous peoples of Africa are adopting French, English, or Swahili.

Sunday, August 2, 2009

Search Engine

Search Engine, computer software that compiles lists of documents, most commonly those on the World Wide Web (WWW), and the contents of those documents. Search engines respond to a user entry, or query, by searching the lists and displaying a list of documents (called Web sites when on the WWW) that match the search query. Some search engines include the opening portion of the text of Web pages in their lists, but others include only the titles or addresses (known as Universal Resource Locators, or URLS) of Web pages. Some search engines occur apart from the WWW, indexing documents on a local area network (LAN) or other system.

Microsoft Corporation

Microsoft was founded in 1975 by William H. Gates III and Paul Allen. The pair had teamed up in high school through their hobby of programming on the original PDP-10 computer from the Digital Equipment Corporation. In 1975 Popular Electronics magazine featured a cover story about the Altair 8800, the first personal computer (PC). The article inspired Gates and Allen to develop a version of the BASIC programming language for the Altair. They licensed the software to Micro Instrumentation and Telemetry Systems (MITS), the Altair’s manufacturer, and formed Microsoft (originally Micro-soft) in Albuquerque, New Mexico, to develop versions of BASIC for other computer companies. Microsoft’s early customers included fledgling hardware firms such as Apple Computer, maker of the Apple II computer; Commodore, maker of the PET computer; and Tandy Corporation, maker of the Radio Shack TRS-80 computer. In 1977 Microsoft shipped its second language product, Microsoft Fortran, and it soon released versions of BASIC for the 8080 and 8086 microprocessors.
Microsoft Corporation, leading American computer Software Company. Microsoft develops and sells a wide variety of software products to businesses and consumers and has subsidiary offices in more than 60 countries. The company’s Windows operating systems for personal computers are the most widely used operating systems in the world. Microsoft has its headquarters in Redmond, Washington.

Microsoft’s other well-known products include Word, a word processor; Excel, a spreadsheet program; Access, a database program; and PowerPoint, a program for making business presentations. These programs are sold separately and as part of Office, an integrated software suite. The company also makes software applications for a wide variety of server products for businesses. Microsoft’s Internet Explorer (IE) allows users to browse the World Wide Web. Among the company’s other products are reference applications; games; financial software; programming languages for software developers; input devices, such as pointing devices and keyboards; software for personal digital assistants (PDAs) and cellular telephones; handwriting-recognition software; software for creating Web pages; and computer-related books.

Microsoft operates the Microsoft Network (MSN), a collection of news, travel, financial, entertainment, and information Web sites. Microsoft and the National Broadcasting Company (NBC) jointly operate MSNBC, a 24-hour news, talk, and information cable-television channel and companion Web site.

Stock Exchange

Stock Exchange, organized market for buying and selling financial instruments known as securities, which include stocks, bonds, options, and futures. Most stock exchanges have specific locations where the trades are completed. For the stock of a company to be traded at these exchanges, it must be listed, and to be listed, the company must satisfy certain requirements. But not all stocks are bought and sold at a specific site. Such stocks are referred to as unlisted. Many of these stocks are traded over the counter—that is, by telephone or by computer.

Major stock exchanges in the United States include the New York Stock Exchange (NYSE) and the American Stock Exchange (AMEX), both in New York City. Far more corporations list their stock on the NYSE than on the AMEX, however. Nine smaller regional stock exchanges operate in Boston, Massachusetts; Cincinnati, Ohio; Chicago, Illinois; Los Angeles, California; Miami, Florida; Philadelphia, Pennsylvania; Salt Lake City, Utah; San Francisco, California; and Spokane, Washington. In addition, most of the world’s industrialized nations have stock exchanges. Among the larger international exchanges are those in London, England; Paris, France; Milan, Italy; Hong Kong, China; Toronto, Canada; and Tokyo, Japan. These stock exchanges all have a central location for trading. The major over-the-counter market in the United States is the Nasdaq Stock Market (formerly, the National Association of Securities Dealers Automated Quotation [NASDAQ] system). The European Association of Securities Dealers Automated Quotation system (EASDAQ) is the major over-the-counter market for the European Union (EU).

Ozone

Ozone (Greek ozein, “to smell”), pale blue, highly poisonous gas with a strong odor. Ozone is considered a pollutant at ground level, but the ozone layer of the upper atmosphere protects life on Earth from the Sun’s harmful ultraviolet radiation.
Ozone is one of three forms, called allotropes, of the element oxygen. Ozone is triatomic, meaning that it has three atoms in each molecule (formula O3). Ordinary, or diatomic, oxygen (O2) is more stable than ozone and accounts for the bulk of oxygen in the atmosphere. Electrical sparks and ultraviolet light can cause ordinary oxygen to form ozone. The presence of ozone sometimes causes a detectable odor near electrical outlets.

The Apollo & NASA

Apollo Program, American manned lunar-space program designed to land an astronaut on the moon and return him safely to earth, as well as to overtake the former Soviet Union in the race to dominate space exploration. Conducted between May 1961 and December 1972 by the National Aeronautics and Space Administration (NASA), the program successfully landed Neil Armstrong—the first person to walk on the moon—and 11 other astronauts on the moon. The program included 12 manned missions: 2 into earth orbit (Apollo 7 and 9); 2 into lunar orbit (Apollo 8 and 10); 3 lunar landing missions (Apollo 11, 12, and 14); and 3 lunar exploration missions (Apollo 15, 16, and 17), which involved extended stays on the moon’s surface and more in depth scientific exploration. One mission was lost during a test on the launch pad (Apollo 1), and one mission returned to the earth before making a scheduled lunar landing (Apollo 13). Following the Apollo program, Apollo spacecraft were used to shuttle astronauts to and from the Skylab space station, and an Apollo spacecraft docked with the orbiting Soviet spacecraft Soyuz 19 in the Apollo-Soyuz Test Project.

The Apollo program was initiated by United States President John F. Kennedy on May 25, 1961. It was preceded by the manned Gemini program, which engineers used to develop the techniques that would be needed for the ambitious trip to the moon, and the unmanned Surveyor Program, which scientists used to probe the lunar surface. At the peak of Apollo preparations in 1965, NASA employed 36,000 civil servants, 376,700 contractor employees, and a yearly operating budget of $5.2 billion. Between 1961 and 1973, NASA spent approximately $25.4 billion on the Apollo missions.

In July 1969 astronauts Neil A. Armstrong and Edwin E. Aldrin, Jr., became the first human beings to set foot on the surface of the moon. The United States space program was in full swing at that time, and in July and August two space probes—Mariner 6 and Mariner 7—flew by Mars to gather data and return images of Earth’s neighboring planet. A September 1969 Scientific American article described some of the scientific information gathered during these three missions. During the same time period, the Soviet Union scheduled a manned mission to circle the moon (Zond 7)—just three weeks before Apollo 8. This mission was postponed and the spacecraft was later launched unmanned. The Soviets continued to develop and test their one-man Lunar Lander spacecraft in the earth’s orbit through August 1971, but a Soviet cosmonaut never reached the moon.

Domain Name System

Domain Name System (DNS), in computer communications, a method of translating Internet addresses so that computers connected in the Internet can find each other. A DNS server translates a numerical address assigned to a computer (such as 207.46.228.91) into a sequence of words, and vice versa. A DNS name, written in lowercase letters with words separated by periods, takes the form of username@computer.zonename. Username is the name or account number used to log on. The hostname (Whitehouse in the example above) is the name of the computer or Internet provider; it may consist of several parts. Zonename indicates the type of organization. Common zone names include com (commercial organization), edu (educational), gov (government), and net (networking organization).

Gold

Gold, symbol Au (from Latin aurum, “gold”), soft, dense, bright yellow metallic element. Gold is one of the transition elements of the periodic table; its atomic number is 79. Pure gold is the most malleable and ductile of all the metals. It can easily be beaten or hammered to a thickness of 0.000013 cm (0.000005 in), and 29 g (1.02 oz) could be drawn into a wire 100 km (62 mi) long. It is one of the softest metals (hardness, 2.5 to 3) and is a good conductor of heat and electricity. Gold is bright yellow and has a high luster. Finely divided gold, like other metallic powders, is black; colloidally suspended gold ranges in color from ruby red to purple
Gold is extremely inactive. It is unaffected by air, heat, moisture, and most solvents. It will, however, dissolve in aqueous mixtures containing various halogens such as chlorides, bromides, or some iodides. It will also dissolve in some oxidizing mixtures, such as cyanide ion with oxygen, and in aqua regia, a mixture of hydrochloric and nitric acids. The chlorides and cyanides are important compounds of gold. Gold melts at about 1064° C (about 1947° F), boils at about 2808° C (about 5086° F), and has a specific gravity of 19.3; its atomic weight is 196.97.

Diamond

Diamond, mineral form of the element carbon, valued as a precious stone. Diamond is the hardest natural mineral and has many other exceptional properties that collectively make it an important industrial and scientific material. Unique geologically, diamonds form at great depths within Earth and are typically billions of years old.
Diamonds are crystals composed of pure carbon. In nature, diamond crystallizes from hot carbon-rich fluids. This crystallization requires tremendous heat and pressure—1000 to 1200°C (1800 to 2200°F) of heat and 50 kilobars of pressure. (One bar is based on the pressure the atmosphere exerts at sea level, about 1.02 kg per sq cm, or 14.7 lb per sq in; 50 kilobars is 50,000 bars.) The pressures and temperatures at which natural diamond forms only occur deep underground. Scientists believe that diamonds form at depths greater than 150 km (93 mi), and there is evidence that some diamonds formed as deep as 670 km (420 mi) beneath Earth’s surface.

Dollar

Dollar, name of various coins and paper money formerly or currently in use in parts of Europe, Africa, Asia, Oceania, and the western hemisphere. It is the standard value, or unit of account, in the monetary systems of Canada and the United States. The word dollar comes from the old German Daler or Taler, an abbreviation of joachimsthaler, the name of a silver coin, imprinted with an effigy of St. Joachim, which was first struck (1519) in what is now Germany. Later, a large milled-edged silver coin called peso duro (hard dollar as it is known in English) was minted in Spain and widely used in the Spanish and English colonies of the New World.

Euro

Euro, monetary unit of the European Union (EU). On January 1, 2002, euro-denominated coins and bills went into circulation in 12 of the 15 EU member states—Austria, Belgium, Finland, France, Germany, Greece, Italy, Ireland, Luxembourg, The Netherlands, Spain, and Portugal. The euro replaced the currencies of these nations.

The adoption of the euro was the final step in the EU’s plan for Economic and Monetary Union (EMU). EMU was designed to establish a single currency and a single monetary authority for EU member states, and was an integral part of the 1991 Maastricht Treaty that founded the EU. In order to make the euro a stable currency, the EU set stringent economic criteria that member countries had to meet before they could adopt the euro. These criteria dealt with things such as levels of inflation, amount of budget deficit and government debt, and stability of the existing national currency.

On January 1, 1999, the euro went into use for accounting purposes and electronic fund transfers in 11 participating EU member states. Greece, the 12th participating member, did not officially adopt the euro until January 1, 2001. Between 1999 and 2002, the euro coexisted with the currencies of the participating states. Starting in 2002 euro notes and coins became legal tender and entered circulation in the 12 states. The member states’ old currencies were to remain legal tender until the end of February 2002, when all monetary transactions were to be conducted in euros.

The bank of issue for the euro is the European Central Bank (ECB), which was established in June 1998 and began operation on January 1, 1999. The ECB, located in Frankfurt, Germany, has total control over all EU monetary policies, including setting interest rates and regulating the money supply.

The euro is divided into 100 cents. Euro notes are issued in denominations of 5, 10, 20, 50, 100, 200, and 500 euros. Coins are issued in denominations of 1, 2, 5, 10, 20, and 50 cents, and 1 and 2 euros. Although bills are identical in all countries, each country issues its own coins, which have a common design on one side and a national design or emblem from the country of issue on the other.