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Search results 18541 - 18550 of 30573 matching essays
- 18541: Virtual Reality
- ... human interface to computers. Virtual reality extends beyond the capability of typical workstation graphics in two ways. First, through the use of tracking sensors, the computer knows precisely the location and angle of the user's head, which enables the graphics scene to be generated in the correct perspective for each eye. Second, because a very wide-angle image is provided, which is updated 10 to 60 times a second and ... a level of immersion in the simulated scene is achieved. Immersion, combined with correct perspective, allows the development of facile methods for navigation in three dimensions. (Gump) Scene complexity is determined by the computer system's capability to display a great number of shaded, lighted, textured, and occluded polygons necessary to visually describe the many objects in the scene. Change to the scene is governed by the computer simulation program or ... HMD and provides accurate tracking over its range of operation. The desktop model uses a standard workstation screen outfitted with stereo liquid crystal display (LCD) shutter glasses synchronized with the screen so that each eye's view, drawn in correct perspective, is presented to that eye only. The disadvantage is a limited field of view, but this can be partially overcome by using a much larger projection screen in front ...
- 18542: Antibiotics
- Antibiotics Antibiotics have played a major role in our society thanks to Sir Alexander Fleming's careful observations in 1928. Without it, many lives would be in danger due to infectious diseases. Antibiotics are chemical substances produced by various species of microorganisms and other living systems that are capable in small ... from living organisms such as bacteria, fungi, and molds. Others are wholly or in part synthetic - that is, produced artificially. Penicillin is perhaps the best known antibiotic. Its discovery and later development is among mankind's greatest achievements. Antibiotics have enabled the medical profession to treat effectively many infectious diseases, including some that were once life-threatening. How Antibiotics Work ? Antibiotics can be bacteriostatic (bacteria stopped from multiplying) or bactericidal (bacteria ... time the antibiotic is needed against these bacteria, it will not be effective. Taking in Antibiotics. To work against infecting organisms, an antibiotic can be applied externally, such as to a cut on the skin's surface, or internally, reaching the bloodstream within the body. Antibiotics are made in several forms and given in different ways. Topical. Topical application means "to a local area" such as on the skin, in ...
- 18543: Bill Gates
- ... to or we have to. When you pick up a book it falls into one of three types, dependent on whether it is a want to or a have to type of book. First there's the kind of book you pick up and like the look of but then the first chapter is so bad that you have to put it down because you are either too confused by the ... It was about how man named Bill Gates became the foundation of computing industry and how he reinvented an industry- and made himself the richest man in America. William (Bill) Gates is the computer industry's youngest billionaire. As president and CEO of Microsoft, he has made several important contributions to the world of technology. Most people would probably picture him as being a computer programmer but not with holding the ... an article in Popular Electronics describing the Mango Information Technology Systems (MITS) Altair 8800, a home computer kit costing four hundred dollars. This "magazine article...would charge their lives and, ultimately, just about everybody else's". At that time, Gates and Allen contacted MITS to let them know they had a form of the computer language, called Basic, for the Altair 8800. A few months later, the Basic language for ...
- 18544: Sir Gawain And The Green Knigh
- ... an opportunity to break free from the restraints of his youth and enter a world of valor. Yet, despite his eventual failure in the tests he encounters, he does in a sense become exalted. Gawain's understanding and acceptance of his flawed nature, and his confession lead to the Green Knight's absolution in the end. The symbolism in the story strongly supports the idea of the rites of initiation. In Arthur s court, the party that was being held was in celebration of Christmas and New Year s. The idea of the start of a new year suggests the end of one cycle and the beginning ...
- 18545: F. Scott Fitzgerald
- F. Scott Fitzgerald Welcome to the roaring 1920's! The Jazz Age. A period within time which the passive behaviors, beliefs, and purity of the past generations, were tossed aside to create room for the changes America was about to experience! The birth of ... emerged a eminent writer of those times. Francis Scott Fitzgerald. Born to the calm and submissive atmosphere of St. Paul Minnesota, he came from a line of highly regarded men and women from his family's past. His most famous relative by far was Francis Scott Key. The writer of our national anthem. Though he was certainly the most famous Fitzgerald, his mother was the most eccentric. Often dressed in miss ... his St. Paul Academy teacher. From that prestigious school he then traveled and began attendance in Princeton University. Not a promising student he was often late to his classes. His excuse was once "Sir-it's absurd to expect me to be on time. I'm a genius!!!" Though the "Princeton years" we not his most memorable, it provided an outlet for his writing, and talent. During his junior year ...
- 18546: Damsels In Address
- ... It is clearly evident that many fairy tales of childhood tend to shape the reader. Certain moral codes and ideals are tightly woven into the text of many fairy tales, promoting or denoting a character’s actions. In the Grimm’s fairy tales Cinderella, Brier Rose, and Rapunzel, the heroines of these tales exhibit strong behavioral codes, thus providing opportunity for the young female reader to relate to the damsel, or to model herself to behave in a similar fashion. In accordance with Marcia R. Lieberman’s essay, " ‘Some Day My Prince Will Come’: Female Acculturation Through the Fairy Tale," I agree with the assertion that positive traits in fairy tale indicate reward, while the negative characteristics bring misfortune. A heroine ...
- 18547: The Future of Human Evolution
- ... science of how populations of living organisms change over time in response to their environment, is the central unifying theme in biology today. Evolution was first explored in its semi-modern form in Charles Darwin 's 1859 book, Origin of Species by means of Natural Selection. In this book, Darwin laid out a strong argument for evolution. He postulated that all species have a common ancestor from which they are descended ... course, human beings will continue to change culturally; therefore cultural evolution will always continue; but what of physiological evolution? The cultural evolution of man will continue as long as man can think; after all it's the ideas we think up that makes up our cultures. In a thousand years man might complete a 180 degree turn culturally (not to mention physiologically) and as seen by our fellow inhabitants of earth ... of homo sapiens, the ideas which cause man to succeed are chosen such as science and democracy (the present growth of Islam is also worthy of mention, but would be a paper in itself). Lamarck's fourth law, that is, ideas acquired by one generation are passed on to the next, describes this transfer of ideas from one generation to another. The question is can humans evolve (physically), that is ...
- 18548: Nature Of The Work
- ... nonprofit research and development laboratories. A few were self-employed. Training, Other Qualifications, and Advancement The Ph.D. degree generally is required for college teaching, independent research, and for advancement to administrative positions. A master's degree is sufficient for some jobs in applied research and for jobs in management, inspection, sales, and services. The bachelor's degree is adequate for some nonresearch jobs. Some graduates with a bachelor's degree start as biological scientists in testing and inspection, or get jobs related to biological science such as technical sales or service representatives. Others become biological technicians, medical laboratory technologists or, with courses in ...
- 18549: Franklin D. Roosevelt
- ... World War II. Roosevelt attended a high-class high school and later graduated from Harvard in 1903. He quickly gained recognition by his leadership of upstate New York Democrats in a fight against Tammany Hall's nominee for the U.S. Senate. At the 1912 Democratic National Convention he backed Woodrow Wilson in a bitter contest for the party's presidential nomination and was consequently awarded the post of assistant secretary of the navy. In the summer of 1921 he was stricken with poliomyelitis. Although his family's wealth allowed him to have a ...
- 18550: Cancer: The Costs, Causes, and Cures
- ... most fatal and aggressive form, is of a larger class of diseases known as neoplasms. There are two forms of a neoplasm: benign or malignant. A benign neoplasm is encapsulated, or surrounded, so that it's growth is restricted, whereas a malignant neoplasm is not closed in. Malignant tumors grow much more quickly than benign forms and spread into the surrounding normal tissue, and virtually destroy it, (Grolier Electronic Encyclopedia, Cancer ... the blood (leukemia), (Grolier, Cancer). Physical Agents High energy and ultraviolet radiation are two of the major causes of human and animal cancer. It has been proven that there is a relation between the sun's ultraviolet rays, and the development of skin cancer in humans. Cancer caused by radiation include just about every known variety, including leukemia, cancer of the thyroid, breast, stomach, uterus and bone, (Grolier, Cancer). It has ... progress from a benign to malignant form, or from a slowly reproducing tumor to a rapidly growing malignant tumor. This progression has been shown to be related to the number of abnormalities within a cell's DNA. The cells surrounding the tumor will be assimilated into the tumor as it grows. It has been shown that tumors can suddenly stop growing, and then resume its growth at a later time. ...
Search results 18541 - 18550 of 30573 matching essays
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