... OUT of ARPANET, not what started ARPANET. During most of the seventies, the protocol was generally referred to as just the Network Control Protocol or NCP. The term Internet was probably first applied to a 1973 research program that culminated in a demonstration system in 1977. It demonstrated networking through various mediums, including satellite, radio, telephone, ethernet, etc. using packet switching. And this formed the roots of the Transmission Control Protocol and Internet Protocol (TCP/IP). But it was not until 1983 that all nodes on ARPANET were required to use TCP/IP to connect to it. Also in 1983, the Department of Defense moved the unclassified portions ...
... "How can UNIX be old and yet powerful by today's standards”, you ask. The answer to this question lies in the history of UNIX; UNIX is a sort of subset of a much larger and more complex operating system called MULTICS. Both UNIX and MULTICS were developed decades ago for very large computers; only now, decades later are personal computers finally powerful enough to tackle these multitasking, multi-user systems with advanced features. Getting back to the crux of our first fact, LINUX looks like UNIX. LINUX is not officially UNIX simply because it was not written by the same programmers as was the original UNIX system. However, LINUX runs UNIX program ...
... the thesis people must know what dams are. A dam is a barrier built across a water course to hold back or control water flow. Dams are classified as either storage, diversion or detention. As you could probably notice from it's name, storage dams are created to collect or hold water for periods of time when there is a surplus supply. The water is then used when there is a lack of supply. For example many small dams impound water in the spring, for use in the summer dry months. Storage dams also supply a water supply, or an improved habitat for fish and wildlife; they may store water for hydroelectricity as well. A diversion dam is a generation of a common ...
... body where it is again evaporated into the atmosphere. Infiltration, however, moves under the force of gravity through the soil. If soils are dry, water is absorbed by the soil until it is thoroughly wetted. Then excess infiltration begins to move slowly downward to the water table. Once it reaches the water table, it is called ground water. Ground water continues to move downward and laterally through the subsurface. Eventually it discharges through hillside springs or seeps into streams, lakes, and the ocean where it is again evaporated to perpetuate the cycle. GROUND WATER AND SUBSURFACE WATER Most rock or soil near the earth's surface is composed of solids and ...
... tend to worsen when they face even mild stress (Harvard Health Letter, 1998) In 1994, generalized anxiety disorder (GAD) became an identifiable mental disorder with a DSM-IV diagnosis. The diagnostic criteria for GAD are: A. Unrealistic or excessive anxiety and worry about life circumstances for a period greater than 6 months, during which this person has been bothered by these concerns for more days than not. B. The person has difficulty controlling the anxiety and worrying. C. The anxiety and worry are associated with at least 3 of the following symptoms: 1) Restlessness or feeling keyed up or on edge 2) Being easily fatigued 3) ...
... microscopic gaps between them called synapses. For a nerve impulse to travel from one nerve cell to another, the sending cell releases a tiny amount of one of the neurotransmitters, which transmits the signal to the second cell, and so on around the body. After a nerve impulse has been sent across a synapse, special enzymes clear away the neurotransmitter so that another impulse may be sent. The first antidepressants, monoamine oxidase (MAO) inhibitors, were discovered accidentally during the 1960's by researchers who were trying to develop new drugs to treat tuberculosis. MAO inhibitors didn't help TB, but they elevated mood. Since then, many other types of antid ...
... understanding of crop origins and variations is necessary in assembling genetic diversity in plant crops. In certain geographical areas there has existed a rich source of variability in crop plants but the encroachment of civilization has reduced the natural variability inherent in primitive plant forms and related species of crop plants. Agricultural process, as a result of new breeding programs, has reduced rather than increased crop variability as improved cultivars, or varieties, are planted in wider and wider areas and old cultivars, which may contain valuable genes, are lost. Crop failures, which result in a smaller gene pool, have led to an incr ...
... the world are being destroyed everyday. These rainforests are being destroyed by human efforts which are centred around greed. Oil companines drilling for oil, logging companies, and fires are the leading causes in destroying the last Nigerian Rainforest. Rainforests cover only two percent of the entire earth’s surface.1 It is estimated that ninety-five percent of Nigeria’s rainforest has been destroyed. A Hong Kong company is logging out of Nigeria for the use of ply-wood, toothpicks, veneer, and chopsticks.2 People need to become more educated about the importance of the rainforest. If people knew more, then niether the rainforest in ...
... field of the black hole prevents any light or other electromagnetic radiation from escaping. But where lies the “point of no return” at which any matter or energy is doomed to disappear from the visible universe? The black hole's surface is known as the event horizon. Behind this horizon, the inward pull of gravity is overwhelming and no information about the black hole's interior can escape to the outer universe. Applying the Einstein Field Equations to collapsing stars, Kurt Schwarzschild discovered the critical radius for a given mass at which matter would collapse into an infinitely dense state known as a singularity. At the center of the bla ...
... of Malaria both begins and ends. The parasitic protozoan enters the bloodstream via the bite of an infected female mosquito. During her feeding she transmits a small amount of anticoagulant and haploid sporozoites along with saliva. The sporozoites head directly for the hepatic cells of the liver where they multiply by asexual fission to produce merozoites. These merozoites can now travel one of two paths. They can go to infect more hepatic liver cells or they can attach to and penetrate erytherocytes. When inside the erythrocytes the plasmodium enlarges into uninucleated cells called trophozites The nucleus of this newly formed cell then divides asexually to pro ...
