Friendship is a term used to denote co-operative and supportive behavior between two or more beings. This article focuses on the notion specific to interpersonal relationships. In this sense, the term connotes a relationship which involves mutual knowledge, esteem, and affection and respect along with a degree of rendering service to friends in times of need or crisis. Friends will welcome each other's company and exhibit loyalty towards each other, often to the point of altruism . Their tastes will usually be similar and may converge, and they will share enjoyable activities. They will also engage in mutually helping behavior, such as exchange of advice and the sharing of hardship. A friend is someone who may often demonstrate reciprocating and reflective behaviors . Yet for many, friendship is nothing more than the trust that someone or something will not harm them.
In the sequence of the emotional development of the individual, friendships come after parental bonding and before the pair bonding engaged in at the approach of maturity. In the intervening period between the end of early childhood and the onset of full adulthood, friendships are often the most important relationships in the emotional life of the adolescent, and are often more intense than relationships later in life. However making friends seems to trouble lots of people; having no friends can be emotionally damaging in some cases. Sometimes going years without a single friend can lead to suicide. A long time of friendship may also result in marriage, as they say, too much friendship, is followed by a compromise. A study by researchers from Purdue University found that post secondary education (e.g. university) friendships last longer than the friendships before it.

Immigration refers to the movement of people between countries. While the movement of people has existed throughout human history at various levels, modern immigration implies long-term permanent residence. Short-term visitors and tourists are considered non-immigrants (see expatriate). Immigration across national borders in a way that violates the immigration laws of the destination country is termed illegal immigration. Under this definition, an illegal immigrant is a foreigner who either illegally crossed an international political border, whether by land, water, or air, or a foreigner who legally entered a country but overstays his/her visa in order to live and/or work therein. Seasonal labour migration, while generally non-permanent in nature (typically for periods of less than a year), is often treated as a form of immigration.
The modern concept of immigration is related to the development of nation-states and nationality law . Citizenship in a nation-state confers an inalienable right of residence in that state, but residency of non-citizens is subject to conditions set by immigration law. The emergence of nation-states made immigration a political issue: by definition it is the homeland of a nation defined by shared ethnicity and/or culture.
The global volume of immigration is high in absolute terms, but low in relative terms. The International Integration and Refugee Association estimated 190 million international migrants in 2005, about 3 percent of global population. The other 97 percent still live in the country in which they were born. The Middle East, some parts of Europe, small areas of South East Asia, and a few spots in the West Indies have the highest percentages of immigration population recorded by the UN Census 2005.

Education encompasses both the teaching and learning of knowledge, proper conduct, and technical competency. It thus focuses on the cultivation of skills, trades or professions, as well as mental, moral & aesthetic development.
Formal education consists of systematic instruction, teaching and training by professional teachers. This consists of the application of pedagogy and the development of curricula. In a liberal education tradition, teachers draw on many different disciplines for their lessons, including psychology, philosophy, information technology, linguistics, biology, and sociology. Teachers in specialized professions such as astrophysics, law, or zoology may teach only in a narrow area, usually as professors at institutions of higher learning. There is much specialist instruction in fields of trade for those who want specific skills, such as required to be a pilot, for example. Finally, there is an array of educational opportunity in the informal sphere- for this reason, society subsidizes institutions such as museums and libraries . Informal education also includes knowledge and skills learned and refined during the course of life, including education that comes from experience in practicing a profession.
Education systems are established to provide education and training, often for children and the young. A curriculum defines what students should know, understand and be able to do as the result of education. A teaching profession delivers teaching which enables learning, and a system of policies, regulations, examinations, structures and funding enables teachers to teach to the best of their abilities. Sometimes education systems can be used to promote doctrines or ideals as well as knowledge, which is known as social engineering . This can lead to political abuse of the system, particularly in totalitarian states and government.

  • Education is a broad concept, referring to all the experiences in which students can learn something.
  • Instruction refers to the intentional facilitating of learning toward identified goals, delivered either by an instructor or other forms.
  • Teaching refers to the actions of a real live instructor designed to impart learning to the student.
  • Training refers to learning with a view toward preparing learners with specific knowledge, skills, or abilities that can be applied immediately upon completion.

Teachers need the ability to understand a subject well enough to convey its essence to a new generation of students. The goal is to establish a sound knowledge base on which students will be able to build as they are exposed to different life experiences.
Technology is an increasingly influential factor in education. Computers and mobile phones are being widely used in developed countries both to complement established education practices and develop new ways of learning such as online education (a type of distance education). This gives students the opportunity to choose what they are interested in learning. The proliferation of computers also means the increase of programming and blogging. Technology offers powerful learning tools that demand new skills and understandings of students, including Multimedia, and provides new ways to engage students, such as Virtual learning environments. Technology is being used more not only in administrative duties in education but also in the instruction of students. The use of technologies such as PowerPoint and interactive whiteboard is capturing the attention of students in the classroom. Technology is also being used in the assessment of students. One example is the Audience Response System (ARS), which allows immediate feedback tests and classroom discussions.

Encyclopedia (or encyclopædia ) is a comprehensive written compendium that contains information on either all branches of knowledge or a particular branch of knowledge. Encyclopedias are divided into articles with one article on each subject covered. The articles on subjects in an encyclopedia are usually accessed alphabetically by article name and can be contained in one volume or many volumes, depending on the amount of material included.
Indeed, the purpose of an encyclopedia is to collect knowledge disseminated around the globe; to set forth its general system to the men with whom we live, and transmit it to those who will come after us, so that the work of preceding centuries will not become useless to the centuries to come; and so that our offspring, becoming better instructed, will at the same time become more virtuous and happy, and that we should not die without having rendered a service to the human race.
The concept of a new free encyclopedia began with the Interpedia proposal on Usenet in 1993, which outlined an Internet-based online encyclopedia to which anyone could submit content and that would be freely accessible. Early projects in this vein included Everything2 and Open Site . In 1999, Richard Stallman proposed the GNUPedia , an online encyclopedia which, similar to the GNU operating system , would be a "generic" resource. The concept was very similar to Interpedia, but more in line with Stallman's GNU philosophy.

It was not until Nupedia and later Wikipedia that a stable and thriving free encyclopedia project was able to be established on the Internet. The English Wikipedia became the world's largest encyclopedia in 2004 at the 300,000 article stage and by late 2005, Wikipedia had produced over two million articles in more than 80 languages with content licensed under the copyleft GNU Free Documentation License. As of July 2007 , Wikipedia has over 2.0 million articles in English and well over 8 million combined in over 250 languages.

Shopping is the examining of goods or services from retailers with intent to purchase at that time. Shopping is the activity of selection and/or purchase. In some contexts it is considered a leisure activity as well as an economic one.
A larger commercial zone can be found in many city downtowns or Arab city souks. Shopping hubs, or shopping centers, are collection of stores that is a grouping of several businesses. Typical examples include shopping malls, town squares, flea markets, and bazaars. Shops are divided into multiple categories of stores which sell a selected set of goods or services. Usually they are tiered by target demographic based on the amount disposable income of the shopper. They can be tiered from cheap to pricey. Some shops sell second-hand goods.
With modern technology such as television and telephone and the Internet, users could be described as home shopping though online retail stores. Electronic commerce and business-to-consumer electronic commerce systems in combination of home mail delivery systems make this possible. Typically a consumer could make purchases though online shopping, shopping channels, mail order, etc. Sometimes peddlers and ice cream trucks pass though the neighborhoods offering services and goods. Also, neighborhood shopping takes place though various garage sales found in United States. Online shopping has completely redefined the way people make their buying decisions; they have access to a lot of information about a particular product which can be looked at and evaluated, at any given time. Online shopping allows the buyer to save the time which would have been spent traveling to the store or mall.

Camera is a device used to capture images, either as still photographs or as sequences of moving images ( movies or videos ). The term comes from the camera obscura ( Latin for "dark chamber"), an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.
Cameras may work with the light of the visible spectrum or with other portions of the electromagnetic spectrum. A camera generally consists of an enclosed hollow with an opening ( aperture ) at one end for light to enter, and a recording or viewing surface for capturing the light at the other end. A majority of cameras have a lens positioned in front of the camera's opening to gather the incoming light and focus all or part of the image on the recording surface. The diameter of the aperture is often controlled by a diaphragm mechanism, but some cameras have a fixed-size aperture.
Traditional cameras capture light onto photographic film or photographic plate. Video and digital cameras use electronics , usually a charge coupled device (CCD) or sometimes a CMOS sensor to capture images which can be transferred or stored in tape or computer memory inside the camera for later playback or processing .
Cameras that capture many images in sequence are known as movie cameras or as ciné cameras in Europe ; those designed for single images are still cameras. However these categories overlap, as still cameras are often used to capture moving images in special effects work and modern digital cameras are often able to trivially switch between still and motion recording modes. A video camera is a category of movie camera that captures images electronically (either using analogue or digital technology). The size of the aperture and the brightness of the scene controls the amount of light that enters the camera during a period of time, and the shutter controls the length of time that the light hits the recording surface. Equivalent exposures can be made with a larger aperture and a faster shutter speed or a corresponding smaller aperture and with the shutter speed slowed down.

Image / Picture is an artifact, usually two-dimensional, that has a similar appearance to some subject -usually a physical object or a person.
Images may be two- dimensional, such as a photograph, screen display, and as well as a three-dimensional, such as a statue. They may be captured by optical devices—such as cameras , mirrors, lenses, telescopes, microscopes , etc. and natural objects and phenomena, such as the human eye or water surfaces.
The word image is also used in the broader sense of any two-dimensional figure such as a map , a graph, a pie chart , or an abstract painting . In this wider sense, images can also be rendered manually, such as by drawing, painting, carving, rendered automatically by printing or computer graphics technology, or developed by a combination of methods, especially in a pseudo-photograph.
A volatile image is one that exists only for a short period of time. This may be a reflection of an object by a mirror, a projection of a camera obscura , or a scene displayed on a cathode ray tube. A fixed image, also called a hardcopy, is one that has been recorded on a material object, such as paper or textile.
A mental image exists in an individual's mind: something one remembers or imagines. The subject of an image need not be real; it may be an abstract concept, such as a graph , function, or "imaginary" entity. For example, Sigmund Freud claimed to have dreamt purely in aural-images of dialogues. The development of synthetic acoustic technologies and the creation of sound art have led to a consideration of the possibilities of a sound-image made up of irreducible phonic substance beyond linguistic or musicological analysis.






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