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Free research papers and essays on topics related to: control mechanism
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- Cable Modems: Cable Tv Meets The Internet - 3,910 words
... downstream traffic travels through the cable modem's Media Access Control mechanism. The MAC mechanism's functions are fairly complex. The MAC mechanism's main purpose is to implement MAC protocols under the direction of the CMTS. MAC protocols are used to time-share the cable media among the various cable modems in a cable data network. The MAC processes can be implemented in hardware, or a combination of software and hardware. Both the CMTS and the MAC mechanism implement MAC protocols to perform ranging procedures to compensate for cable media delays and line losses. The CMTS also interfaces with the MAC mechanism in each cable modem to assign upstream frequencies and upstream time s ...
Related: cable, cable modems, internet access, internet connection, internet protocol, internet service, internet usage
- Cancer In Detail - 1,070 words
Cancer In Detail Discuss social, ethical and biological issues associated with cancer Cancer is one of the most complex and devastating diseases that claim the life of many humans. Today there are one in three people worldwide who are affected by cancer, and almost 60% of these people will almost certainly die. 7000 New Zealanders die every year from this disease. It is the second largest killer next to heart disease. Cancer does not just affect certain groups of people, it can affect anybody and it is not just one disease, it refers to more than a hundred diseases. Cancer is caused by carcinogens. At present, hundreds of chemicals are known to induce cancer. Normally, the bodys cells divide ...
Related: breast cancer, cancer, colon cancer, lung cancer, prostate cancer
- Domestic Violence: Theory, Effects Interventions - 2,884 words
Domestic Violence: Theory, Effects & Interventions The female is, as it were, a mutilated ... a sort of natural deficiency. It is not appropriate in a female character to be manly or clever. The male is by nature superior and the female inferior. Introduction Domestic violence has been present in our society and an accepted practice of many cultures for hundreds of years. Up until the late 1800's, a man in this country had the right to chastise his wife until the practice was declared illegal in two states (Pennsylvania Coalition Against Domestic Violence Manual, p. B-8). Old English Common Law allowed husbands to beat their wives provided that the stick they used was not thicker than his th ...
Related: domestic abuse, domestic violence, intervention strategies, battered women, loving husband
- How Ethernet Works - 1,994 words
How Ethernet Works What Is Ethernet and How Is It Used? ITSK2511 Cecil Jackson Invention of Ethernet A gentlemen by the name of Bob Metcalfe realized that he could improve on a system called the Aloha System which arbitrated access to a shared communications channel. He developed a new system that included a mechanism that detects when a collision occurs (collision detect). The system also includes listen before talk, in which stations listen for activity (carrier sense) before transmitting, and supports access to a shared channel by multiple stations (multiple access). Put all these components together, and you can see why the Ethernet channel access protocol is called Carrier Sense Multipl ...
Related: ethernet, fast ethernet, dinner party, computer industry, multiple
- Narcolepsy - 903 words
Narcolepsy An article in the Scientific American, by Jerome M. Siegel, focused on a dangerous sleeping disorder called Narcolepsy. A Narcoleptic has Symptoms such as cataplexy, which is the loss of skeletal muscle tone, and always feeling sleepy during daytime hours. The people suffering from this disorder tend to feel as if they hadn't gone to sleep for 48 hours. In addition, they sleep poorly at night. Laughter, embarrassment, sudden anger, social interactions with strangers, and sexual intercourse may trigger a cataplectic attack. A Narcoleptic may even fall asleep at the most dangerous times. For example, driving a car with this untreated disorder puts a person at high risk of an automob ...
Related: narcolepsy, most dangerous, northwestern university, cerebral cortex, stem
- Philosophy: Life After Death Analysis - 1,546 words
... s to spend the great part of its time writing an imperative persuasio; trying to convince us that we will survive death at all, not really addressing how it will happen. The closest we get is I Corinthians 15 vs 35-44 where it first tells us that we should not worry about how we are to be resurrected, but allays our fears with the idea of being given a brand new body after death (ideally on the day of Judgement, but then there is an awful lot of souls hanging around somewhere for millennia upon millennia ... ) constructed of "heavenly flesh". Well that's ok then. Some people are less trusting than me and wished to hear an explanation that had either Evidence (not going to happen in this ...
Related: life after death, energy conservation, first philosophy, runaway slaves, hindu
- Tall Stories Newscience Picture In Your Mind The Skyline Of Downtown Toronto Theres The Cn Tower, Of Course, And The 72floor - 1,044 words
================================================== ===================== Tall Stories NEWSCIENCE -------------------------------------------------- --------------------- Picture in your mind the skyline of downtown Toronto. There's the CN Tower, of course, and the 72-floor First Canadian Place, the city's tallest skyscraper. Cascading from there are the assorted banks and hotels and insurance towers. Now, use your imagination to construct some new buildings, these ones reaching three, four and five times higher than the others. Top it all off with a skyscraper one mile high (three times as high as the CN Tower). Sound fanciful? It did 30 years ago when Frank Lloyd Wright proposed the first mil ...
Related: downtown, tall, toronto, trade center, control mechanism
- The Applications Of Technology In The First Decade Of The Twentyfirst Century - 1,548 words
... we might also have it our office buildings, pipelines, airplanes, and even our sports equipments. These are new, smart materials that will give off warnings when they detect excessive stress. Materials in bridges or airplanes, for instance, could send a signal to a central operator when they detect stress, and that operator could send a return signal for the materials to respond to the stress. Automobile parts could give us a similar warning when they are approaching the point of breakdown. What is really amazing is that these materials will be designed with sensors built into the molecular structure of material. And, not too far in the future, they will be inexpensive enough to be in pr ...
Related: advanced technology, decade, next decade, technology, using technology
- The Heart - 2,839 words
The Heart INTRODUCTION In today's society, people are gaining medical knowledge at quite a fast pace. Treatments, cures, and vaccines for various diseases and disorders are being developed constantly, and yet, coronary heart disease remains the number one killer in the world. The media today concentrates intensely on drug and alcohol abuse, homicides, AIDS and so on. What a lot of people are not realizing is that coronary heart disease actually accounts for about 80% of all sudden deaths. In fact, the number of deaths from heart disease approximately equals to the number of deaths from cancer, accidents, chronic lung disease, pneumonia and influenza, and others, COMBINED. One of the symptoms ...
Related: coronary heart disease, heart attack, heart disease, carbon dioxide, high cholesterol
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