Thursday, December 20, 2007

Inca Rope bridge

Inca Rope bridges were simple suspension bridges over canyons and gorges to present access for the Inca Empire. Bridges of this type were suitable for use since the Inca people did not use wheeled transport - traffic was incomplete to pedestrians and livestock. These bridges were an intrinsic part on the Inca road scheme and are an excellent example of Inca innovation in engineering. They were frequently used by Chasqui runners delivering messages throughout the Inca Empire.

The construction of these bridges amounted to a pair of stone anchors on each side of the canyon with immense cables of woven ichu grass linking these two pylons together. Adding to this construction, two additional cables acted as guardrails. The cables which supported the foot-path were unbreakable with plaited branches. This multi-structure system made these bridges strong enough to even carry the Spaniards while riding horses after they indoors. However, these massive bridges were so heavy that they tended to sag in the middle, and this caused them to bend in high winds.

Friday, December 14, 2007

Wilderness

Wilderness is generally defined as a natural environment on Earth that has not been directly modified by human activity. Ecologists consider wilderness areas to be an integral part of the planet's self-sustaining natural ecosystem.

The word, wilderness, derives from the notion of wildness; in other words that which is not controllable by humans. The word's etymology is from the Old English wilderness, which in turn derives from wilder meaning wild beast (wild + deor = beast, deer). From this point of view, it is the wildness of a place that makes it a wilderness. The mere presence or activity of people does not disqualify an area from being wilderness. Many ecosystems that are, or have been, inhabited or influenced by activities of people may still be considered wild. This way of looking at wilderness includes areas within which natural processes operate without very noticeable human interference.

Looked at through the lens of the visual arts, nature and wildness have been important subjects in various epochs of world history. An early tradition of landscape art occurred in the Tang Dynasty. The tradition of representing nature as it is became one of the aims of Chinese painting and was a significant influence in Asian art. Artists learned to depict mountains and rivers "from the perspective of nature as a whole and on the basis of their understanding of the laws of nature … as if seen through the eyes of a bird." In the 13th century, Shih Erh Chi listed "scenes lacking any places made inaccessible by nature," as one of the 12 things to avoid in painting.

Wednesday, November 28, 2007

Calculator

A calculator is a machine for performing calculations. Although modern calculators often incorporate a general purpose computer, the device is calculated for performing specific operations, rather than for flexibility. Modern calculators are more convenient than most computers, though some Pads are comparable in amount to handheld calculators.

In the past, some calculators were as huge as today's computers. The first automatic calculators were mechanical desktop devices which were replaced by electromechanical desktop calculators, and then by electronic devices using first sung valves, then transistors, then hard-wired integrated circuit logic. New calculators are electrically powered and come in innumerable shapes and sizes varying from cheap, give-away, credit-card sized models to more sturdy adding machine-like models with built-in printers.

Tuesday, November 20, 2007

Geography and economics

The Ghana is an African country located on the western side of Africa. The neighbor countries are Burkina Faso, Togo, the Atlantic Ocean, and Cote d’Ivoire. It has a population of nearly 18,100, 703 and a population density may be of 197 people per square mile. The Ghana’s area is 92,098 square miles and the official language is English. The capital city is Accra has around 1, 673,000 residents. There are the physical statistics, which is to be considered.

The great strengths of the country are its natural resources. And also, they are very rich. The big export is Cocoa, which totally accounts for 15% of the world's supply. And also the gold production, now a days, it's exported as more as one million fine ounces. Ghana is also supplying bauxite, diamonds, coffee, rice, cassava, timber and rubber. After 1983, the economy has steadily grown. By the economic recovery policies intact, the economy has raised 5% a year since 1983. Tourism development also grows within Ghana. The Tourist rates are also increasing. With these cash crops, costly goods, and economic restructuring, one would wonder why they need assistance at all.

Monday, October 29, 2007

Beauty Queen

Beauty pageants are usually multi-tiered, through local competitions feeding into the bigger competitions. The worldwide pageants, thus, need hundreds, sometimes thousands, of local competitions. In the United States, there is currently a commercial beauty pageant industry that organizes thousands of local events for all ages for profit supported by magazines like The Crown Magazine and Pride of Pageantry, the online epiczine.com, the Pageant News Bureau and The Crown Magazine, and a crowd of retailers of all from tiaras to cosmetic surgery.

Beauty Queens are selected on many criteria. Every individual pageant will provide to future delegates its exacting methods of competition and scoring. For example, The universal Pageant http://www.worldwidepageant.net has a sole scoring method wherein delegates have the possible of earning a score of 110%. The breakdown is 25% evening wear, 25% physical wear, 50% personal interview, and an optional 10% for a getting portfolio. Diamond Dolls is a pictorial only competition which provides 100% of the score based leading submission of required photos. There are other pageants who take a completely different approach on the whole. Mostly in reference to on-line photogenic pageants, there are competitions in which a winner is selected on a monthly or even weekly basis. There are persons who will take each of these as a "preliminary winner" with the aim upon a "final" competition at some later date. Others delight each of these as a "final" winner and give a title.

In spite of the method of competition, break down of scores or frequency of selection; all are defined as "activity in the form of a beauty pageant." It is up to the person to determine which is best suitable for competition or of particular entertainment interest.

Friday, October 19, 2007

Vehicles

Vehicles are non-living means of moving. They are most repeatedly man-made (e.g. bicycles, cars, motorcycles, trains, ships, and aircraft), although some other means of transportation which are not made by man can also be called vehicles; examples include icebergs and balanced tree trunks. Vehicles may be propelled by animals, e.g. a chariot or an ox-cart. However, animals on their own, though used as a earnings of transportation, are not called vehicles. This includes humans transport another human, for example a child or a disabled person.

Vehicles that do not pass through on land are often called crafts, such as watercraft, sail craft, aircraft, hovercraft and spacecraft. Movement lacking the help of a vehicle or an animal is called locomotion. The word vehicle itself comes from the Latin vehicular.

Wednesday, October 10, 2007

Football

Football is the name given to a number of different, but correlated, team sports. The most popular of these world-wide is organization football also known as soccer. The English word football is also applied to American football, Australian rules football, Canadian football, Gaelic football, rugby football rugby union and rugby league, and connected games. Each of these codes specific sets of rules is to a greater or lesser area referred to as football and sometimes footy by its followers.
Throughout the history of mankind, the urge to kick at stones and other such objects is thought to have led to many early activities linking kicking and/or running with a ball. Football-like games predate recorded history in all parts of the world, and thus the earliest forms of football are not known.Sheffield Football Club, founded in 1857 in the English city of Sheffield, by former Harrow School pupils Nathaniel Creswick and William Prest, was later recognised as the world's oldest club playing involvement football. However, the club initially played its own code of football the Sheffield system. There were some similarities to the Cambridge rules, but players were allowed to push or hit the ball with their hands, and there was no offside rule at all, so that players known as kick throughs could be permanently placed near the opponents' goal. The code extend to a number of clubs in the area and was popular until the 1870s.

Friday, September 21, 2007

Laser

A laser is a device that emits light through a specific mechanism for which the expression laser is an acronym: Light Amplification by Stimulated release of Radiation. This is a combined quantum-mechanical and thermodynamical procedure discussed in more detail below. As a light source, a laser can have various properties, depending on the reason for which it is designed and calibrated. A typical laser emits light in a contracted, low-divergence beam and with a well-defined wavelength. This is in contrast to a light source such as the incandescent light bulb, which emits into a large solid angle and over a wide spectrum of wavelength. These properties can be summarized in the term coherence.
Light of a specific wavelength that passes through the increase medium is amplified; the neighboring mirrors ensure that the majority of the light makes many passes through the gain medium. Part of the light that is between the mirrors passes through the partially apparent mirror and appears as a beam of light. The process of supplying the power required for the amplification is called pumping and the energy is typically supplied as an electrical current or as light at a diverse wavelength. Most practical lasers contain additional elements that affect properties such as the wavelength of the emitted light and the form of the beam.

Wednesday, September 05, 2007

Chair

A chair is a piece of furniture for sitting, consisting of a seat, a back, and sometimes arm rests, generally for use by one person. Chairs also often have four legs to support the sit raised above the floor. Without back and limb rests it is called a stool. A chair for more than one human being is a couch, sofa, settee, loveseat, recliner or bench. A split footrest for a chair is known as an ottoman, hassock or poof. A chair mounted in a vehicle or in the stage is simply called a seat. The back often does not expand all the way to the seat to allow for ventilation. Likewise, the back and sometimes the seat are made of permeable materials or have holes drilled in them for decoration and ventilation.
The back may extend above the stature of the head. Headrests for seats in vehicles are important for prevent whiplash injuries to the neck when the vehicle is occupied in a rear-end collision.
Chair design considers planned usage, ergonomics, as well as non-ergonomic functional requirements such as size, stack ability, fold ability, weight, durability, stain confrontation and artistic design.

Wednesday, August 29, 2007

Monitor

A computer is a display device. A computer programming utility used for examining and modifying memory-resident engine code programs. The computer programming interface for synchronising concurrent access to a set of variables in a computer program. A hardware device that events electrical events such as pulses or voltage levels in a digital computer. A speaker used on stage to allow musicians to hear each other. Also called fold back a video monitor, a television-like device used in studio, lab or analysis environments. A supervisory control system for installations such as SCADA to monitor significant system parameters. Special installations require adapted monitoring installations like transformer monitors or substation monitors. A Hall monitor, one who patrols the entry of a school. A Prefect, schoolboy or schoolgirl given individual authority in some British schools, especially public schools.

Friday, August 17, 2007

Social network

A social network is a social structure made of nodes that are tied by one or more specific types of relatives, such as values, visions, idea, financial exchange, friends, kinship, dislike, trade, web links, sexual relations, disease communication or airline routes.
Social network analysis views common relationships in terms of nodes and ties. Nodes are the individual actors within the networks, and ties are the associations between the actors. Research in a number of academic fields has shown that social networks operate on many levels, from families up to the level of nations, and play a serious role in determining the way problems are solved, organizations are run, and the degree to which individuals succeed in achieving their goals.
In its simplest form, a social network is a map of all of the appropriate ties between the nodes being studied. The network can also be used to decide the social capital of individual actors. These concepts are often displayed in a shared network diagram, where nodes are the points and ties are the lines.

Wednesday, August 08, 2007

Computation

Computation is a common term for any type of information processing that can be represent mathematically. This includes phenomenon ranging from simple calculations to human idea. In a more narrow meaning, computation is a process following a well distinct model that is understood and can be expressed in an algorithm, protocol, network topology, etc.
These hypothetical computing equipment can be viewed as idealised analog computers which operate on real numbers and are differential, whereas digital computers are partial to computable numbers and are algebraic. Depending on the model select, this may enable real computers to solve problems that are inextricable on digital computers.

Friday, July 27, 2007

Solar wind

The solar wind is a stream of charged particles which are expelled from the upper atmosphere of the sun. It consists mostly of high-energy electrons and protons that are able to get away the sun's gravity in part because of the high temperature of the corona and the high kinetic energy particles gain through a process that is not well understood at this time.

They are directly related to the solar wind, together with geomagnetic storms that can knock out power grids on Earth, auroras and the plasma tail of a comet always pointing away from the sun. While early models of the solar wind used primarily thermal energy to accelerate the material, by the 1960s it was clear that thermal hurrying alone cannot account for the high speed solar wind. Some additional acceleration mechanism is required, but is not presently known, but most likely relates to magnetic fields in the solar atmosphere. The solar wind is answerable for the overall shape of Earth's magnetosphere, and fluctuations in its speed, density, direction, and entrained magnetic field powerfully affect Earth's local space environment.

Monday, July 23, 2007

Capacitance

Capacitance is a measure of the quantity of electric charge stored for a given electric potential. The most general form of charge storage device is a two-plate capacitor. If the charges on the plates are +Q and -Q, and V gives the voltage difference between the plates, then the capacitance is given by c=Q/v. The capacitance of the majority of capacitors used in electronic circuits is several orders of size smaller than the farad. The most ordinary units of capacitance in use today are the millifarad (mF), microfarad (µF), the nanofarad (nF) and the picofarad (pF).

The dielectric constant for a number of very useful dielectrics changes as a function of the applied electrical field, e.g. ferroelectric materials, so the capacitance for these devices is no longer purely a purpose of device geometry. If a capacitor is driven with a sinusoidal voltage, the dielectric constant, or more exactly referred to as the dielectric permittivity, is a function of frequency. A changing dielectric constant with frequency is referred to as a dielectric dispersion, and is governed by dielectric recreation processes, such as Debye relaxation.

Tuesday, July 17, 2007

Energy meter

An electric meter or energy meter is a machine that measures the amount of electrical energy supplied to a residence or business. These are customers of an electric company.

The most common type is more accurately known as a (kilo) watt-hour meter or a joule meter. They may also record other variables including the time, when the electricity was used. Modern electricity meters operate by continuously measuring the instantaneous voltage and current (amperes) and finding the product of these to give direct electrical power (watts) which is then integrated against time to give energy used (joules, kilowatt-hours etc). The meters fall into two essential categories, electromechanical and electronic. The type of meter described commonly used on a single-phase AC supply. Different phase of meter configurations use additional voltage and current coils. The most general type of electricity meter is the electromechanical induction meter.

Wednesday, July 11, 2007

Escalator

An escalator is a conveyor transport device for transporting people, consisting of a staircase whose steps move up or down on tracks that keep the surfaces of the individual ladder horizontal. As a power-driven, continuous moving stairway planned to transport passengers up and down short vertical distances, escalators are used around the world to move pedestrian traffic in places where elevators would be impractical. Principal areas of usage include shopping centers, airports, transit systems, convention centers, hotels, and public buildings.

They have the capacity to move large numbers of people, and they can be placed in the same physical space as set of steps. They have no waiting interval, except during very heavy traffic, they can be used to guide people towards main exits and they may be weather-proofed for outdoor use.

Wednesday, July 04, 2007

Festival

A festival is an event, usually dramatic by a local community, which centers on some unique aspect of that community. Among many religions, a feast or festival is a set of merriment in honor of God or gods. A feast and a festival are traditionally interchangeable. However, the term feast has also entered general secular parlance as a synonym for any large or elaborate meal. When used as in the meaning of a festival, most repeatedly refers to a religious festival rather than a film or art festival.
Festivals are many types, serve to meet specific social needs and duties, as well as to present entertainment. These times of celebration offer a intellect of belonging for religious, social, or geographical groups. Modern festivals that focus on educational or ethnic topics seek to inform members of their traditions. In past times, festivals were times when the elderly shared stories and transferred convinced knowledge to the next generation. Historic feast often provided a means for unity among families and for people to come across mates. Select anniversaries have annual festivals to celebrate previous significant occurrences.

Tuesday, June 26, 2007

House

A house is a pattern used for habitation by people that generally has walls and a roof to shelter its enclosed space from precipitation, wind, heat, cold, and other elements. Animals including both domestic pets and unwanted animals often live in houses. The word house may also refer to a construction that shelters animals, especially within a zoo. The social unit that dwells in a house is known as a household. Most commonly, a household is a family unit of some kind, though households can be other social groups, such as single persons, or groups of unconnected individuals. Settled agrarian and industrial societies are composed of household units living permanently in housing of various types, according to a selection of forms of Land tenure. English-speaking people generally call any building they routinely occupy home. Many people leave their house during the day for work and activity but typically return to it to sleep or for other activities.

Monday, June 18, 2007

Database

The fundamental form of data is stored in the data bases. When data is large we modify it in the form of data where house. Data where house is that place where numerous data stand are stored. When a data base application is created and close to data base, certain properties are reserve in mind. In application different users are created and given certain human rights. Some of them are made supervisor while others are made users. When we create a exacting application for a company or a business administration. These types of application include different task behavior which mainly involves conclusion making and also present and future line of work. The application is made with full expertise which on analyzing makes a business man winning. This application also includes data store which contains information about employee’s personal information, pay scale, etc..

Thursday, June 07, 2007

Nuclear weapon

From nuclear reactions of fission or fusion nuclear weapon derives its destructive power. Even a single weapon is capable of destroying an entire city.

During the closing days of World War II nuclear weapons have been used twice and the first event was United States dropped uranium gun-type device code-named "Little Boy" on the Japanese city of Hiroshima on August 6, 1945. Three days later it dropped a plutonium implosion-type device code-named "Fat Man" on the city of Nagasaki.These events killed around 100,000 to 200,000 people and still it’s affecting the newborn –babies.

United States, Soviet Union, United Kingdom, France, People's Republic of China, India, Pakistan, and North Korea are the countries known to have detonated nuclear weapons.Iran attempting to develop nuclear capabilities, though its government claims that it’s acknowledged nuclear activities, such as uranium enrichment, is for peaceful purposes currently. Nuclear explosives have been used for various non-military uses also.

Tuesday, May 01, 2007

Frag

Frag (military), assassination of an unpopular member of one's own fighting unit, often using a fragmentation grenade. Frag (video gaming), means to kill someone temporarily in computer games. Frag (game) is a board game published by Steve Jackson Games. Fragmentation grenade, in military, a type of hand grenade File system fragmentation, a file system (disk) is said to be fragged as in fragmented In aquarium trade, a small fragment of a living coral separated from a larger colony for asexual propagation. A pungent form of cheese made in Liverpool, England. FRAG as an acronym may stand for:
Florida Resident Access Grant, which is available to Florida residents attending private universities in the state of Florida. Flashing red and green – a multicolour-LED (light-emitting diode) that is blinking in alternate colours, for example to indicate an error condition. Farran Road Action Group, a group founded with the aim to improve road safety at Farran Cross, Co. Cork, Ireland. Free Roaming Action Game, a sub-genre of sandbox video games that feature Grand Theft Auto style game play

Monday, April 30, 2007

Radio

Early uses were maritime, for sending telegraphic messages using Morse code between ships and land. The earliest users included the Japanese Navy scouting the Russian fleet during the Battle of Tsushima in 1905. One of the most memorable uses of marine telegraphy was during the sinking of the RMS Titanic in 1912, including communications between operators on the sinking ship and nearby vessels, and communications to shore stations listing the survivors.
Radio was used to pass on orders and communications between armies and navies on both sides in World War I; Germany used radio communications for diplomatic messages once its submarine cables were cut by the British. The United States passed on President Woodrow Wilson's Fourteen Points to Germany via radio during the war. Broadcasting began from San Jose in 1909[4], and became feasible in the 1920s, with the widespread introduction of radio receivers, particularly in Europe and the United States. Besides broadcasting, point-to-point broadcasting, including telephone messages and relays of radio programs, became widespread in the 1920s and 1930s. Another use of radio in the pre-war years was the development of detecting and locating aircraft and ships by the use of radar (RAdio Detection And Ranging).
Today, radio takes many forms, including wireless networks, mobile communications of all types, as well as radio broadcasting. Before the advent of television, commercial radio broadcasts included not only news and music, but dramas, comedies, variety shows, and many other forms of entertainment. Radio was unique among dramatic presentation that it used only sound. For more, see radio programming.

News

News is any new information or information on current events which is relayed by print, broadcast, Internet, or word of mouth to a third party or mass audience. The reporting and investigation of news falls within the profession of journalism. News is often reported by a variety of sources, such as newspapers, television, and radio programs, wire services, and web sites. News reporting is a type of journalism, typically written or broadcast in news style. Most news is investigated and presented by journalists and can be distributed to various outlets via news agencies.
There are many categories of news. The weather is typically presented by a certified meteorologist or, on smaller stations, a less-trained "weatherman" and is considered news. Other news categories are: sports, fashion, society, entertainment, business, cartoon strips, features, lottery numbers, lives of celebrities, advertising, and more. Until the 1970s, when women's lib issues came to the forefront, most newspapers had a "Women's" section devoted entirely to fashion and society news. Papers even printed "cheesecake" feature photos of attractive young women in bikinis, often transmitted by the AP or UPI wire services, illustrating various news events or feature ideas.

Monday, April 02, 2007

Collateral damage

Collateral damage is a military euphemism that was made popular at the time of Vietnam War (Army Technology). The euphemism has now been in use so long that it is an accepted term within military forces, meaning "unintentional damage or incidental damage affecting facilities, equipment or personnel, happening as a result of military actions directed against targeted enemy forces or facilities. Such damage can occur to friendly, neutral, and even enemy forces."
Etymologically, the expression "collateral damage" probably was originally used as military doublespeak rather than a euphemism, as the adjective "collateral" doesn't seem to have been used as a synonym for "unintentional" or "accidental" earlier. However, "collateral" may also sometimes mean "additional but subordinate," i.e. "secondary", and that specific meaning of a rather obscure word in the English language seems to have been picked up and broadened by the military in the expression "collateral damage."

Monday, February 05, 2007

Bond

In finance, a bond is a debt security, in which the issuer owes the holders a debt and is gratified to repay the principal and interest at a later date, termed maturity. Other provisions may also be attached to the bond issue, such as the obligation for the issuer to offer certain information to the bond holder, or limitations on the behavior of the issuer. Bonds are generally issued for a fixed term longer than ten years. U.S Treasury securities issued debt with life of ten years or more is a bond. New debt between one year and ten years is a note, and new debt less than a year is a bill.

A bond is simply a loan, but in the form of a security, although terminology used is rather different. The issuer is equivalent to the borrower, the bond holder to the lender, and the coupon to the interest. Bonds enable the issuer to finance long-term investments with external funds. Debt securities with a maturity shorter than one year are typically bills. Certificates of deposit or commercial paper are measured money market instruments.

Saturday, January 13, 2007

Culture of Bhutan

While the Bhutanese are free to travel abroad, Bhutan is seen to be unreachable to foreigners. The widespread misperception that Bhutan has set limits on tourist visas, the high tourist tariff and the requirement to go on packaged tours seem to create this impression.

The habitual dress for Ngalong and Sharchop men is the gho, a knee-length robe tied at the waist by a cloth belt known as the kera. Women wear an ankle-length dress, the kira, which is clipped at one shoulder and coupled at the waist. Social status and class determine the quality, colours, and decorations that embellish the garments. Scarves and shawls are also indicators of social standings, as Bhutan has conventionally been a feudal society. Earrings are worn by females. Controversially, Bhutanese law now requires these garments for all Bhutanese citizens.