Saturday, December 29, 2007

Pets

A pet is an animal kept for companionship and enjoyment, as opposed to livestock, laboratory animals, working animals or sport animals, which are kept for economic reasons. The most popular pets are noted for their loyal or playful characteristics, for their attractive appearance, or for their song. Pets also generally seem to provide their owners with non-trivial health benefits; keeping pets has been shown to help relieve stress. There is now a medically-approved class of therapy animals, mostly dogs, who are brought to visit confined humans. Walking a dog can provide both the owner and the dog with exercise, fresh air, and social interaction.

Koko the gorilla is one of few examples of a non-human animal which has had an explicit pet. Using sign language, she requested a cat; her first pet was a kitten named All Ball, to which she was reported to be quite attached and mourned for several days after the cat escaped and was killed by a car.

The GloFish is a genetically modified fluorescent zebrafish with bright red, green, and orange fluorescent color. It is the first genetically modified animal to become available as a pet.

Wednesday, December 19, 2007

Hockey

Hockey is any of a family of sports in which two teams struggle by trying to maneuver a ball, or a hard, surrounding disc called a puck, into the opponent's net or goal, using a hockey stick. Field hockey is played on nettle, natural grass, sand-based or water-based artificial turfs, with a small, hard ball. The game is popular among both males and females in many countries of the world, mostly in Europe, India, Pakistan, Australia, New Zealand, South Africa and South Asia. In most countries, the game is played between single-sex sides, even though it can be played by mixed-sex sides. In the United States and Canada it is played mostly by women.

Ball hockey is played in a gym using sticks and a ball, often a tennis ball with the hair removed.
There are early representations and reports of hockey-type games being played on ice in the Netherlands, and reports from Canada from the beginning of the nineteenth century, but the modern game was initially planned by students at McGill University, Montreal in 1875 who, by two years later, codified the first set of ice hockey rules and organized the first teams.

Thursday, December 13, 2007

Computers

Computers take numerous physical forms. The first devices that resemble modern computers date to the mid-20th century, although the computer concept and various machines similar to computers existed prior. Early electronic computers were the size of a large room, consuming as much power as several hundred modern personal computers. Modern computers are based on comparatively tiny integrated circuits and are millions to billions of times more capable while occupying a fraction of the space. Today, simple computers may be made small enough to fit into a wrist watch and be powered from a watch battery. Personal computers in various forms are icons of the information age and are what most people think of as "a computer". However, the most common form of computer in use today is by far the embedded computer. Embedded computers are small, simple devices that are often used to control other devices-for example, they may be found in machines ranging from fighter aircraft to industrial robots, digital cameras, and even children's toys.

The ability to store and execute lists of instructions called programs makes computers extremely versatile and distinguishes them from calculators. The Church-Turing thesis is a mathematical statement of this versatility: Any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore, computers with capability and complexity ranging from that of a personal digital assistant to a supercomputer are all able to perform the same computational tasks given enough time and storage capacity

Tuesday, November 27, 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.

Monday, November 19, 2007

pregnant woman and her health

Pregnancy is not an easy job for a woman. Starting from conception to birth, a woman's body carries out the most miraculous process of fertilization, implantation and the maturity and growth of her baby . Her body is her baby's dwelling place for the next nine months and the occurrences of pregnancy turn into a journey of many new physical feelings. Whether it is first, second, thirdpregnancy, her body will respond in a different way to each individual pregnancy. So health of a pregnant woman is very important to be taken care of.

Throughout the first 12 weeks of pregnancy called the '1st trimester’, a woman's body adjust to present a fostering and protective environment for her baby to grow and develop. Seldom, the early signs of pregnancy can make a woman feel puzzled. This may be for the reason that many of the physical signs of in the early hours of pregnancy such as enlarged tender breasts, sensitivity of tiredness, overstuffed and perhaps experiencing spasms and or pelvic uneasiness can be considered as normal pre-menstrual signs. In all these stages the health of the woman declines because she is not only feeding herself, also her little developing fetus.

They may also sense disgusted or sick, due to morning sickness. It is not unusual to feel unsure about what is 'normal' during the early stages of pregnancy development, and unfamiliar signs or sensations may trigger concerns about the health, of her and baby. It’s been proved by the Gynecologists that every woman's body will react in a different way to being pregnant. Many women find their early pregnancy symptoms very difficult to cope with, both at work and generally.

Friday, October 26, 2007

Aquarium

The aquarium has a long history and maintaining an aquarium has become immensely popular worldwide. Aquarius can come in a variety of materials, shapes, and sizes. They are classically constructed of glass or high-strength plastic. Cuboid aquarium are also known as fish tanks or simply tanks, while bowl-shaped aquarium are also known as fish bowls. Size can range from a small glass bowl to enormous public aquariums. A number of apparatus are used to maintain appropriate water quality and uniqueness suitable for the aquarium's residents. There are many types of aquarium, classified by the organisms maintained or the type of surroundings that is mimicked.

Monday, October 15, 2007

Peacock

Peacock Lane is a 5 block street in Portland, Oregon which is notable because all of the houses are required to be adorned at Christmastime. During this instance, many people drive from all over the Portland area to view the decorated houses.

The community has a website that has on its 1920s, each house in this quaint southeast locality has been decorating for Christmas. Mostly Tudors, the houses are adorned with not only beautiful stunning lights, but also nativity scenes, rotating Christmas trees and attractively life-like replicas of Santa and Frosty. This is a very popular Portland tradition and the crowds can get rather thick. It is wise to park several blocks away and walk, rather than drive from side to side the area. Better yet, take a ride in a horse-drawn carriage.

Tuesday, October 09, 2007

Toy

A Toy is an item used in play. Toys are usually related with children and pets, but it is not unusual for adult humans and some non-domesticated animals to play with toys. Many items are manufactured to serve as toys, but items shaped for other purpose can also be used as toys. A child may pick up a domestic item and 'fly' it around pretending that it is an airplane, or an animal might play with a pinecone by batting at it, chasing it, and throwing it up in the air. Some toys are intended largely as collector's items and are not to be played with.The origin of toys is prehistoric; dolls representing infants, animals, and soldiers, as well as representations of tools used by adults are pleasure found at archaeological sites. The origin of the word toy is unknown, but it is understood that it was first used in the 14th century.
Toys and play in general are an important part of the method of learning about the world and growing up. The young use toys and play to discover their identity, help their bodies grow tough, learn cause and effect, explore relationships, and practice skills they will need as adults. Adults use toys and play to form and strengthen social bonds, teach the young, memorize and reinforce lessons from their own youth, exercise their minds and bodies, practice skills they may not use every day, and decorate their living spaces. Toys are more than simple amusement, and they and the way they are used greatly influence most aspects of life.

Wednesday, September 19, 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.

Tuesday, September 04, 2007

Tsunami

A tsunami is a series of waves shaped when a body of water, such as an ocean, is rapidly displaced. Earthquakes, group movements above or below water, volcanic eruptions and other underwater explosions, landslides, large meteorite impacts and testing with nuclear weapons at sea all have the potential to produce a tsunami. The effects of a tsunami can range from imperceptible to devastating. The word tsunami comes from the Japanese words meaning harbor and wave. For the plural, one can either follow usual English practice and add an s, or use an invariable plural as in Japanese. The term was created by fishermen who returned to port to find the area neighboring their harbor devastated, although they had not been conscious of any wave in the open water. Tsunamis are general throughout Japanese history; approximately 195 events in Japan have been recorded.
A tsunami has a much smaller amplitude (wave height) offshore, and a very long wavelength, which is why they generally pass unobserved at sea, forming only a passing bulge in the ocean. Tsunami have been historically referred to as tidal waves because as they approach land, they take on the characteristics of a vicious onrushing tide rather than the sort of cresting waves that are formed by wind action upon the ocean. Since they are not really related to tides the term is considered misleading and its treatment is discouraged by oceanographers.

Thursday, August 23, 2007

Indicator

Dial indicators are instruments used to correctly measure a small distance. They may also be known as a Dial gauge, Dial Test Indicator, or as a clock. They are named so because the measurement results are displayed in a overstated way by means of a dial. They may be used to check the dissimilarity in tolerance during the check process of a machined part, measure the deflection of a beam or ring under laboratory conditions, as well as many other situations where a small measurement needs to be registered or indicated.
An economic indicator is a statistic concerning the economy. The lighting system of a motor vehicle consists of lighting and signaling procedure mounted or integrated to the front, sides and rear of the vehicle. The purpose of this system is to present illumination for the driver to operate the vehicle safely after dark, to increase the visibility of the vehicle, and to display information about the vehicle's presence, position, size, direction of travel, and driver's intentions concerning direction and speed of travel.

Thursday, August 16, 2007

Security

Security is the condition of being sheltered against danger or loss. In the general sense, security is a perception similar to safety. The nuance between the two is an added emphasis on being protected from dangers that initiate from outside. Individuals or actions that encroach upon the condition of protection are responsible for the breach of security.

The word security in general procedure is synonymous with safety, but as a technical term security means that something not only is protected but that it has been secured. A condition that results from the establishment and maintenance of protective measures that ensures a state of inviolability from hostile acts or influences. With respect to classified matter, the condition that prevents unauthorized persons from having right to use to official information that is safeguarded in the benefit of national security.

Monday, August 06, 2007

The result in cricket

If the team that bats last has all of its batsmen dismissed before it can reach the run total of the differing team, it is said to have lost by (n) runs. If however, the team that bats last exceeds the opposing team's run total before its batsmen are dismissed, it is said to have win by (n) wickets, where (n) is the difference between the number of wickets conceded and 10.If, in a two-innings-a-side match, one team's combined first and second innings total fails to reach its opponent's first innings total, there is no need for the opposing team to bat again and it is said to have won by an innings and (n) runs, where (n) is the variation between the two teams' totals.

If all the batsmen of the team batting last are dismissed with the scores closely equal then the match is a tie; ties are very rare in matches of two innings a side. In the traditional form of the game, if the time allotted for the match expires before either side can win, then the game is a draw. If the match has only a single innings per side, then a highest number of deliveries for each innings is frequently imposed. Such a match is called a limited overs or one-day match, and the side scoring more runs wins anyway of the number of wickets lost, so that a draw cannot occur. If this kind of match is temporarily intermittent by bad weather, then a complex mathematical formula known as the Duckworth-Lewis method is often used to recalculate a new target score. A one-day match can be declared a No-Result if fewer than a up to that time agreed number of overs have been bowled by either team, in circumstances that make normal recommencement of play impossible.

Thursday, July 26, 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.

Friday, July 20, 2007

Bond

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

A bond is simply a loan, but in the form of a security, although expressions used is rather different. The issuer is equivalent to the borrower, the bond holder to the lender, and the voucher to the interest. Bonds enable the issuer to finance long-term investments with external funds. Certificates of deposit (CDs) or commercial paper are measured money market instruments.

Monday, July 16, 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.

Tuesday, July 10, 2007

Electronics

Electronics is the learn of the flow of charge through different materials and devices such as, semiconductors, resistors, inductors, capacitors, nano-structures, and vacuum tubes. All applications of electronics involve the transmission of either information or power. Although measured to be a theoretical branch of physics, the design and structure of electronic circuits to solve practical problems is an e Most analog electronic appliances, such as radio receivers, are constructed from combinations of a few types of basic circuits. Analog circuits use a continuous range of voltage as contrasting to discrete level as in digital circuits. The number of different analog circuits so far devised is huge, especially because a circuit can be defined as anything from a single component, to systems containing thousands of mechanism.

Friday, June 29, 2007

Locks

Generally, locks are advisory locks, where each thread cooperates by acquiring the lock before accessing the equivalent data. Some systems also implement mandatory locks, where attempting unauthorized access to a locked resource will force exclusion in the entity attempting to make the access.

In terms of access to the data, no difference is made between shared or exclusive modes. Other schemes provide for a shared mode, where several threads can obtain a shared lock for read-only access to the data. Other modes such as exclusive, intend-to-exclude and intend-to-upgrade are also widely implemented.

Independent of the type of lock chosen above, locks can be confidential by what happens when the lock strategy prevents progress of a thread. Most locking designs block the finishing of the process requesting the lock until it is allowed to access the locked resource. A spin lock is a lock where the thread simply waits until the lock becomes accessible. It is very efficient if threads are only likely to be uncreative for a short period of time, as it avoids the overhead of operating system process re-scheduling. It is wasteful if the padlock is held for a long period of time.

Monday, June 25, 2007

Color

Color is the visual perceptual possessions corresponding in humans to the categories called red, yellow, white, etc. Color derives from spectrum of light distribution of light energy versus wavelength interacting in the eye with the spectral sensitivities of the light receptors. Color categories and physical condition of color are also associated with objects, materials, light sources, etc., based on their physical properties such as light absorption, reflection, or emission spectra.

Typically, only features of the composition of light that are visible by humans wavelength spectrum from 400 nm to 700 nm, roughly are included, thereby objectively relating the psychological phenomenon of color to its physical specification. Because perception of color stems from the varying sensitivity of different types of cone cells in the retina to different parts of the spectrum, colors may be defined and quantify by the degree to which they stimulate these cells. These physical or physiological quantifications of color, however, do not fully clarify the psychophysical perception of color appearance.

The science of color is sometimes called chromatics. It includes the perception of color by the human eye and brain, the origin of color in materials, color theory in art, and the physics of electromagnetic emission in the visible range that is, what we commonly refer to simply as light.

Friday, June 15, 2007

Voltage

Voltage is the difference of electrical potential between two points of an electrical or electronic circuit, uttered in volts. It measures the potential energy of an electric field to source an electric current in an electrical conductor. Depending on the difference of electrical potential it is called extra low voltage, low voltage, high voltage or extra high voltage.

Between two points in an electric field, such as exists in an electrical circuit, the distinction in their electrical potentials is known as the electrical potential difference. This difference is proportional to the electrostatic force that tends to drive electrons or other charge-carriers from one point to the other. Potential difference, electrical potential, and electromotive force are measured in volts, leading to the commonly used term voltage. Voltage is usually represented in equations by the symbols V, U, or E.

Electrical potential difference can be thought of as the capacity to move electrical charge through a resistance. At a time in physics when the word force was used loosely, the potential difference was named the electromotive force or EMF—a term which is still used in confident contexts.

Sunday, May 27, 2007

Nanny

A nanny is defined as a child's nurse. The traditional nanny was a servant in a large household and reported directly to the lady of the house. Nannies were always female and this remained the case through the 20th Century. This role currently stands firmly as a sector of early childhood education.The nanny in a great house ran her own tiny domain, supported by at least one nursery maid. Because of their role in child care, they were somewhat more indulged than junior servants. Nannies may have remained in the employ of the same aristocratic family for years, looking after successive generations of children.

Today, although many families employ part-time babysitters, fulltime nannies in the classic sense can only be afforded by upper-middle to upper class families.Typically, girls and women in the 20 to 30 age bracket take up employment as nannies. Some are younger. In many poorer countries, many teenage girls also work as nannies. Nannies typically earn low salaries. Sometimes the employer requires their nanny/nannies to wear a uniform. This happened often earlier during the 20th century, but since the 1990s many nannies instead can wear clothes that are comfortable for their work. A nanny uniform can include a dress or blouse and skirt.

Monday, April 30, 2007

Football

Football is the name given to a number of different, but related, team sports. The most popular of these world-wide is association 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 related games. Each of these codes (specific sets of rules) is to a greater or lesser extent referred to as "football" and sometimes "footy" by its followers.
These games involve:
a large spherical or prolate spheroid ball, which is itself called a football. a team scoring goals and/or points, by moving the ball to an opposing team's end of the field and either into a goal area, or over a line. the goal and/or line being defended by the opposing team. players being required to move the ball mostly by kicking and — in some codes — carrying and/or passing the ball by hand. goals and/or points resulting from players putting the ball between two goalposts. offside rules, in most codes, restricting the movement of players. in some codes, points are mostly scored by players carrying the ball across the goal line. in most codes players scoring a goal must put the ball either under or over a crossbar between the goalposts. players in some codes receiving a free kick after they take a mark/make a fair catch. Many of the modern games have their origins in England, but many peoples around the world have played games which involved kicking and/or carrying a ball since ancient times.

Village

A village is a clustered human settlement or community, larger than a hamlet, but smaller than a town or city[1]. Though generally located in rural areas, the term urban village may be applied to certain urban neighbourhoods. Villages normally are permanent with fixed dwellings, however transient villages[2] can occur. Further, the dwellings of a village are fairly close to one another, as against being scattered broadly over the landscape (‘dispersed settlement’).
Throughout the human past, villages have been the usual form of community for agricultural societies, and even for some non-agricultural societies. Towns and cities were few, and were home to only a small proportion of the population. The Industrial Revolution caused many villages to grow into towns and cities; this trend of urbanisation has continued and hastened since, though not always in connection with industrialisation. Villages have thus been eclipsed in importance, as units of human society and settlement.

Monday, April 02, 2007

Fashion and the process of change

Fashion, by definition, changes continuously. The changes may progress more quickly than in most other fields of human activity. For some, modern fast-paced changes in fashion embody many of the negative aspects of capitalism: it results in waste and encourages people qua consumers to buy things unreasonably. Others, especially young people, enjoy the diversity that changing fashion can apparently offer, seeing the constant change as a way to satisfy their wish to experience "new" and "interesting" things. Note too that fashion can change to enforce regularity, as in the case where so-called Mao suits became the national uniform of mainland China.

Monday, February 05, 2007

Bankruptcy

Bankruptcy is a lawfully affirmed incapability or impairment of ability of an individual or organization to pay their creditors. Creditors may file bankruptcy for a debtor in an effort to recoup a portion of what they are owed. In the most of the cases, bankruptcy is initiated by the debtor.

The main reason of bankruptcy is to give an honest debtor a fresh start in life by reducing the debtor of most debts, and to repay creditors in an orderly manner to the extent that the debtor has the means available for payment. Bankruptcy allows debtors to resolve debts through the division of non-exempt assets among creditors. In addition the declaration of bankruptcy allows debtors to be discharge most of the financial obligations, after their non exempt assets are dispersed, even if their debts have not been paid in full.

Saturday, January 13, 2007

Culture of China

For centuries, opportunity for economic and social advancement in China could be provided by high performance on majestic examinations. The literary emphasis of the exams affected the common perception of cultural refinement in China, such as the view that calligraphy and literati painting were higher forms of art than dancing or drama. China's traditional values were derivative from various versions of Confucianism and conservatism. A number of more authoritarian strains of thought have also been influential, such as Legalism. There was often clash between the philosophies, such as the individualistic Song Dynasty neo-Confucians, who believed Legalism departed from the original spirit of Confucianism. Examinations and a culture of merit remain greatly valued in China today. In recent years, a number of New Confucians have advocated that democratic ethics and human rights are quite compatible with traditional Confucian "Asian values".