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Positron Emission Tomography (PET), 2004.
This paper is a research proposal to determine the current and potential clinical applications for positron emission tomography and to develop a ?best practices? approach to developing a partnership between cognitive scientists and neuroscientists.
3,065 words (approx. 12.3 pages), 21 sources, APA, $ 89.95
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Abstract
This paper explains that Positron Emission Tomography (PET), an
imaging technique, allows clinicians to localize safely and monitor accurately the activity of areas in the normal human brain during specific mental tasks. The author points out that the traditional methods of research, such as experiments in memorizing and observation of individuals who had suffered localized brain damage, have been facilitated by innovative methodologies, such as positron emission tomography, that connect human behavior to specific brain structures and functions. The paper relates that the research methodology will be a critical review of the scholarly and relevant literature, followed by a qualitative and quantitative analysis of how partnership between cognitive scientists and neuroscientists can be created and improved based on the technique?s demonstrated efficacy in various clinical settings. Color illustrations.
Table of Contents
Introduction
Statement of the Problem
Purpose of Study
Importance of Study
Review of Related Literature
Background and Overview
How Positron Emission Tomography Works.
Figure 1. Typical Positron Emission Tomography Device, Clinician and Patient
Radionuclides Used in PET
Figure 2. PET Scan of Damaged Human Brain
Methodology
Data-gathering Method and Database of Study
From the Paper
"PET provides clinicians with a functional brain-imaging technique to identify brain regions activated in motor, sensory, cognitive, and emotional processes. ?PET is based on a simple principle: a radioactive isotope that emits [[Beta].sup.+] particles (i.e., positrons, with a mass equal to an electron but with a positive electrical charge) is artificially integrated into a biological molecule and then injected intravenously.? In the various PET applications, a chemical compound that is ?labeled? with a short-lived, positron-emitting radionuclide (either carbon, oxygen, nitrogen, or fluorine) is injected into the body. The activity of such a radiopharmaceutical is then measured quantitatively throughout the target organs through the use of photomultiplier-scintillator detectors."
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Telecommunications Installation, 2004.
An analysis of how Frederick Taylor's theory of scientific management can be used to increase productivity in telecommunications installation.
1,383 words (approx. 5.5 pages), 8 sources, MLA, $ 46.95
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Abstract
This paper examines the history and specifics of Taylor's theory of scientific management. The scope of telecommunication installation is discussed, and the application of Taylor's theory of scientific management to telecommunications installation is reviewed. A summary of key points and recommendations is given.
Outline
Introduction
Telecommunications Installation
Frederick Taylor's Theory of Scientific Management
Scientific Management and Telecommunications Installation
Key Points
Conclusion
Recommendation
From the Paper
"In order to understand how Frederick Taylor's theories apply to telecommunications, it is first important to understand the scope of telecommunication installation. Telecommunication itself is simply communication that is achieved through electronic transmission, such as cable, radio, television, telephone, or even the telegraph (The American Heritage Dictionary of the English Language). Installation in telecommunications can include installation of underground and aerial telephone and other telecommunication lines, and cable television lines and cables. Further, telecommunication installation can include fitting of telephone equipment and hardware, as well as wiring (Human Resources and Skills Development Canada)."
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Entropy, 2004.
An analysis of entropy, the spontaneous dispersal of energy.
1,000 words (approx. 4.0 pages), 4 sources, MLA, $ 35.95
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Abstract
This paper discusses the concept of entropy, describing how it governs every physical, chemical, and biological aspect of life. The paper explores two different perspectives to view entropy: that it is essentially dispersive in nature and that it is constructive in nature. The paper provides examples to illustrate entropy.
From the Paper
"Entropy effects are seen in almost every instance of life. At an atomic and molecular level, the energy of substances is associated with their motion. A more energetic compound has greater motion. This atomic and molecular motion can be translational, vibrational and/or rotational, in decreasing order of energy. Each of these motions is associated with energy levels that are discrete. Atoms and, in turn, molecules cannot have randomly assigned energies. This means that substances can possess only discrete quanta or packets of energy."
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Nanomachines, 2004.
A detailed analysis of nanotechnology.
3,895 words (approx. 15.6 pages), 14 sources, MLA, $ 106.95
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Abstract
This paper contends that nanomachines constitute the future hope for humanity. The paper states that curing diseases, fixing the atmosphere, and reducing of poverty fully, are no longer remote ideas, but will become reality with the help of nanomachines. The paper discusses the feasibility of overcoming the technological barriers in the construction of nanomachines.
From the Paper
"The Science of molecular size machines and its engineering designs and constructions until late 1980s were not considered practicable. Nanotechnology, according to the leading exponents of that time were neither feasible nor viable, due to the fact of total structural difference of the constituent of nano-molecular device i.e. Atoms from the mechanical objects of every day life. The essential components of engineering mechanics i.e. cogwheels, gears or motors could not be imagined to have formed by means of atoms, that are characterized by fuzzy and unsubstantial contents having no definite location position."
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A Brief History of Kevlar Development, 2004.
Describes Kevlar, a material best known for its use in bulletproof vests, and its many applications.
3,025 words (approx. 12.1 pages), 16 sources, APA, $ 88.95
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Abstract
This paper provides an overview and background of aramids, in general, and Kevlar, in particular, including its physical properties, its advantages and disadvantages, as well as anticipated future developments and trends in its production. A summary of the research is provided in the conclusion.
Introduction
Review and Discussion
Advantages and Disadvantages
Future Developments and Trends
Conclusion
From the Paper
"Background and Overview. Kevlar is an industrial textile that is most commonly known in the manufacture of bulletproof vests; however, it is also used in the manufacture of composites, and fiber optic and electromechanical cables (Seewald, 1991). Industrial textiles refer to the manufacture of such fabrics as asbestos, glass fibers, carbon fibers and Kevlar, which are produced for the automotive, aerospace sectors of industry (Martin, Penn & Scattergood, 1991). Following the success of nylons in such applications, aromatic nylons known as aramids were created through the condensation of a diamine and terephthalic acid (this is a carboxylic acid that contains a hexagonal benzene ring in its molecules). The close packing of the aromatic polymer chains resulted in a strong, tough, stiff, high-melting fiber that was suitable for use in radial tires, heat- or flame-resistant fabrics, bulletproof clothing, and fiber-reinforced composite materials. DuPont first began to produce Nomex (its trademark for poly-meta-phenylene isophthalamide) in 1961 and Kevlar (the trademarked name of poly-para-phenylene terephthalamide) in 1971 (Stevens & Kauffman, 2004)."
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Mechanics and Dynamics, 2004.
Overview of dynamics, a branch of study that analyzes motion in relation to objects.
3,426 words (approx. 13.7 pages), 4 sources, MLA, $ 97.95
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Abstract
This paper first defines mechanics, a branch of study that deals with the influence of forces acting on bodies and dynamic responses of bodies to the imposition of those forces, and then lists the three different subdivision of mechanics. Included in this subdivision is dynamics, which the paper also explains and describes as it relates to the study of mechanics.
From the Paper
"Life without motion is better explained as death. A living being is said to be having life only when the walls of the heart engage in pumping the blood, when the blood circulates through the entire body, when nerves impulse electrically from brain to toe, lungs move to bring oxygen, food transports through the stomach and intestines, when the iris expands and contracts, when the eyeball rotates, etc. Not only in the living beings, the riddles of the non-living items like recoiling of a fired gun, acceleration of an automobile, action of a spinning top, the motion of a space rocket can also be broken down in terms of the analysis of motion."
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Metal Detectors, 2004.
This paper discusses metal detectors, the mainstays of building security.
1,115 words (approx. 4.5 pages), 5 sources, APA, $ 38.95
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Abstract
This paper explains that, since 9/11, countries with a high level of terrorism, such as Israel, use metal detectors, which were formerly used mainly in prisons, but are now used in airports and other public buildings. The author reports that there are three types of metal detectors in general use today, including walk-through, hand-held, and extended arm types. The paper relates that several newer technologies, such as back-scatter X-ray, millimeter wave analysis, and terahertz wave technology, are in various phases of development and deployment to supplement the basic equipment that has traditionally relied on magnetic induction fields and their interaction with electrically conductive and magnetically permeable materials.
From the Paper
"Most metal detectors utilize an electromagnetic field generated by passing an electric current through a wire coil. In the case of walk-through metal detectors, the electromagnetic field is projected in the form of a wall between the borders formed by the equipment; hand-held devices project a circular field surrounding the length of the device. In the case of walk through detectors, subjects (and any potential targets) pass completely through the electromagnetic field, whereas hand-held devices are employed by passing them close enough to potential targets to come within the known dimensions of the magnetic field surrounding the device. Extended arm detectors function exactly the same as hand-held devices, except that their design allows them to be more easily deployed to bring their electromagnetic field closer to the ground for their specific use in detecting buried weapons or contraband."
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Solar Energy, 2004.
Examines the history, future, and practicality of solar energy.
2,556 words (approx. 10.2 pages), 5 sources, MLA, $ 77.95
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Abstract
Scientists, environmentalists, and advocates of cheap, clean energy often tout solar energy as the answer to the world's energy problems and the energy source of the future. This paper examines whether solar energy is, indeed, the answer and whether its use on a large-scale is practical for use in the United States. It also looks at the history and types of solar energy.
From the Paper
"In addition, creating solar power generators it is a much smaller endeavor than building power generators for neighborhoods and businesses. Solar energy is quiet, reliable, and safe, and it makes sense in a variety of situations. Because of this, many states, including New Jersey, are adopting stricter standards for utility companies concerning utilizing more solar power. A recent amendment by the New Jersey Legislature requires the state's electrical utilities to utilize solar power as a portion of their power generation."
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The History of the Cell Phone, 2004.
This paper is a cultural and scientific overview of cell phones from 1843 to the present day.
1,615 words (approx. 6.5 pages), 5 sources, APA, $ 52.95
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Abstract
This paper explains that the desire for instant communication without being tied to a particular machine can be dated as far back as 1843 when Michael Faraday, an analytical chemist, began exhaustive research into whether space could conduct electricity. The author points out that the cell phones, which were introduced commercially in the 1980s, were expensive and often difficult to carry; moreover, service provided by the cell phone carriers of the day was extremely poor in comparison to ?land lines?. The paper relates that, although early use of cell phones elicited embarrassment and laughter, usage advanced when, in addition to their professional connections, consumers demanded the ability to stay connected with children, spouses, friends, and other individuals on a more consistent basis than allowed by a land phone.
From the Paper
"Cell phones have existed longer in modern history and memory than might be commonly thought. Communicating in a wireless fashion, in fact, has existed almost as long as what are now termed ?land lines? or ordinary phones. But it was not until 1977 that cell phones, along the lines of today?s technology, first ?went public.? The state of Chicago began the first trials of cell phones with 2000 customers. Eventually other cell phone trials appeared in the Washington D.C. and Baltimore area. The next nation to make use of the technology after the United States was Japan, which began testing cellular phone service in 1979."
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Isaac Newton, 2004.
A biography of the great scientist and physicist, Sir Isaac Newton.
908 words (approx. 3.6 pages), 5 sources, MLA, $ 32.95
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Abstract
This paper presents a brief biography of Isaac Newton. The paper begins with his family history from his early days in England to his student days at Cambridge. The paper then explores Newton and his various fields of interest: Optics; Astronomy; and the Laws of Mechanical Motion. The writer believes that Newton laid the foundation and standardized the scientific approach, which revolutionized the whole mode of human life.
From the Paper
"Of all these laws Newton?s most famous is the law of universal gravitation, which explained that every object in the universe exerts an attractive force (gravitation force) on every other object. Thus Newton?s laws of mechanical motion in effect created a new perception in our understanding of the universe and the interrelation between the different heavenly bodies. Ernst Mach an eminent scientist had this to say about Newton?s law of mechanics, ?All that has been accomplished in mathematics since his day has been a deductive, formal, and mathematical development of mechanics on the basis of Newton?s laws.? [Michael .H. Hart, 44]. All these laws were published in his famed work ?principia? (Mathematical Principles of Natural Philosophy?) in 1687."
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Integrated Studies, 2004.
A discussion of the association between mathematics and science.
1,935 words (approx. 7.7 pages), 7 sources, MLA, $ 61.95
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Abstract
This paper examines how, for many who lack a strong grounding in math and science, the two are often associated as being the same. The purpose of this paper is to define mathematics and science, showing them as two distinct fields of inquiry and then to show how advances in theoretical mathematics contribute the framework needed for scientists in the study of quantum mechanics, a branch of physics, which in turn, is one of the many branches of science.
Outline
Introduction
Mathematics
Science
Quantum Mechanics
Mathematics and Quantum Mechanics
Science and Quantum Mechanics
From the Paper
"Finally, applied mathematics is a term loosely applied to a range of studies which have significant use in the sciences, specifically the empirical sciences, (branches of science open to practical or experiential experimenting). Applied mathematics makes use of numerical methods and computer science, seeking concrete solutions to explicit mathematical problems. In science and technology it has a major use as a way to model and/or simulate natural phenomenon or events. Examples include using mathematical models in computer generated wind tunnel tests to predict the behavior of a given shape of a prototype airplane wing without resorting to expensive actual wind tunnel testing."
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Health Issues and Mobile Telecommunication, 2004.
This paper evaluates the health effects of non-ionizing radiation as associated with the mobile phone.
3,215 words (approx. 12.9 pages), 14 sources, APA, $ 92.95
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Abstract
This paper discusses that the major concern is that the electromagnetic waves, or the EM, ultimately may cause cancer. The author points out that the energy generated from mobile phones is called non-ionizing because they are said to have photon energy to remove atoms from living tissues, which may cause a lot of serious biological problems. The paper concludes that various studies conducted to evaluate this situation state that there is no real connection between the usage of cell phones and the cause of cancer.
From the Paper
"The non-ionization of molecules has been always associated with the biological affects of X-rays. When the frequency is lower, such as that of visible light, the RF and the MW is very low to be able to disorder chemical bonds. This electromagnetic spectrum is called as non-ionizing. Since this non-ionizing electromagnetic energy cannot break chemical bonds there is no relation between these and the non-ionizing electromagnetic rays. But it is true that this non-ionizing electromagnetic energy can cause certain biological effects and the biological effects of these soft UV, visible and IR frequencies all rely on the photon energy that is emitted. But most of these consist of electronic excitation rather than ionization and most of these also do not occur at a frequency less than 3*10^11 Hz in terms of IR. These RF and MW radiations can cause heating in tissues in which they are in direct contact. It is the frequency of the source that determines the amount and the direction of the object being heated. The AM radio uses a frequency which is much below, 10^6 Hz, here the energy level is very low, and hence cannot cause any sort of damage to the human body or to animals."
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