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Smoke Movement in High Bay Hangars, 2002.
Examines the interaction of smoke movement and detector sensitivity in high-bay hangar spaces.
9,084 words (approx. 36.3 pages), 42 sources, APA, $ 188.95
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Abstract
This study develops reliable data that fire safety and security management professionals can use in the development of models for smoke detector types and placement in high-bay hangar facilities. Two research questions are investigated in this paper and hypotheses are tested in relation to each research question. The research questions investigated were as follows:
1. What effect does bay height have on smoke detector sensitivity in a high-bay hangar?
2. What effect does the use of a draft curtain have on smoke detector sensitivity in a high-bay hangar?
Each of the hypotheses is supported by the analysis of the data. The results of the research performed for this study show that, as bay height increases (all other factors remaining equal), smoke detector sensitivity decreases. The results of the research performed for this study further show that smoke detector sensitivity is higher when draft curtains are in place than when draft curtains are not in place.
Based on these findings, the paper concludes that the use of draft curtains should be mandated in all high-bay hangars. It concludes, further, that means should be found to deploy smoke detectors at levels lower than ceiling height in bays higher than 15 meters.
Table of Contents:
Introduction
Statement of the Problem
Research Questions
Purpose of the Study
Definitions of Terms
Overview of the Remainder of the Study
Review of Literature
Theoretical Framework
Waveform Analysis
Systems Theory
Related Research
Methodology
Research Design
Research Questions and Hypotheses
Variables and Operational Definitions
Data Collection Procedures
Data Analysis
Findings
Results of Testing hypothesis One
Results of Testing hypothesis Two
Summary and Conclusions
Summary of the Results
Conclusions
References
From the Paper
"A total of 33 full-scale fire experiments were conducted in two high-bay hangars. The two high-bay hangars were of different heights, thereby allowing the effects of height on smoke detector sensitivity to be measured and assessed. Draft curtains were used in some experiments but not in others. This approach allowed the effects of the use of draft curtains on smoke detector sensitivity to be measured and assessed. Varying fire sizes were used in the experiments."
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Smart Systems and Magnetostrictive Actuators, 2002.
An analytical report on smart systems and magnetostrictive actuators in aeronautical design.
24 words (approx. 0.1 pages), 3682 sources, MLA, $ 17.95
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Abstract
This paper provides an application oriented state-of-the-art review of smart materials and magnetostrictive actuators in aeronautical design. Smartness describes self-adaptability, self-sensing, memory and multiple functionality of the materials or structures. The paper shows that these characteristics provide numerous possible applications for these materials and structures in aerospace, manufacturing, civil infrastructure systems and biomechanics. Active vibration and acoustic transmission control, active shape control and active damage control are some of those areas which have found attractive applications for smart materials and structures. Examples of specific applications are micro-positioning, vibration isolation, fast acting valve and nozzles, transducers, luxury car shocks, and active engine mounts in aircrafts. The paper shows that system integration, mass and energy consumption reduction, elimination of moving parts in actuators and collocation between actuator and sensor are some of the benefits of using smart materials. Those smart materials covered in this paper are primarily piezoelectric, shape memory alloys and magnetostrictive.
From the Paper
"Along these lines there is growing interest in the design and control of smart structures systems with embedded sensors and actuators that provide enhanced ability to program a desired response from a system. The ability to sense real-time conditions, i.e., the factors that contribute to turbulence and therefore resistance in a given environment, would be welcome and useful. Applications of interest include: (a) smart helicopter rotors with actuated flaps that alter the aerodynamic and vibrational properties of the rotor in conjunction with evolving flight conditions and aerodynamic loads; and (b) smart fixed wings with actuators that alter airfoil shape to accommodate changing drag/lift conditions. In these and other examples, key technologies include actuators based on materials that respond to changing electric, magnetic, and thermal fields via piezoelectric, magnetostrictive and thermo-elasto-plastic interactions."
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Global Positioning System, 2002.
This paper discusses the Global Positioning System (GPS) and includes technical data.
2,350 words (approx. 9.4 pages), 9 sources, MLA, $ 72.95
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Abstract
This paper explains that GPS provides all-weather round-the-clock navigation capabilities for the military and is an integral asset in numerous civilian applications and industries around the globe, including recreational uses such as boating, aircraft and hiking, corporate vehicle fleet tracking and surveying. The author states that the military's Precision (P) code provides positional accuracy to within approximately 20 meters. The paper reports that the first eleven spacecraft (GPS Block 1) were used to demonstrate the feasibility of the GPS system; the orbit inclination was 63 degrees, differing from the 55 degrees used for the operational system.
Table of Contents
Abstract
Background: Global Positioning System (GPS)
Problems to be Solved
Technical Discussion
Launch Facts
Future Prospects
From the Paper
"SLR will continue to be essential for measuring temporal variations of the gravity field given the passive simplicity of these orbit targets and the decadal span of precision data. With the launch of Lageos 2 in 1992 and Stella in 1993, in combination with the older geodetic satellites Lageos, Starlette, and Ajisai, estimates of the temporal variations of the gravity field will undoubtedly be improved in accuracy, and spatial and temporal resolution. Geophysical modeling of temporal gravity variations will also continue to be important, since their combination with the satellite estimates will improve our knowledge of the solid Earth, ocean, and atmosphere. The development of realistic eddy resolving multi-layer ocean models forced by real wind fields will be an important resource over the next few years for determining the role played by the atmosphere and oceans in the excitation of the Earth's gravity and rotational variations [Rosen, 1993]. Future improvements in the long-wave-length models of the time-invariant gravity field will depend on accurately modeling or estimating both the tidal and non-tidal gravity variations, as the current uncertainties for the low degree coefficients are at the same level as the known temporal variations of the coefficients. While tidally-induced variations have been modeled for many years, the importance of modeling non-tidal variations in gravity is only now becoming apparent."
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The Institutionalization of Science, 2002.
Examines the history of the institutionalization and professionalization of science in the leading nations of Western Europe.
4,858 words (approx. 19.4 pages), 12 sources, APA, $ 123.95
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Abstract
The First Industrial Revolution (1760-1850) had an immense impact on the professionalization of science in Britain, France and Germany. This paper traces the history of the process of changing science from a field that belonged to "some enlightened entrepreneurs and a handful of aristocratic patrons" to a field in the which the state sponsored new initiatives and created a professional and well-defined discipline. The paper compares the process of institutionalization and the creation of modern universities between Britain and the rest of Europe.
From the Paper
"Much of the system of technical training--on a state-supported basis--was continued even after the Revolution as the general notion of centralized education and training remained a favored plan with nearly all successive rulers of France. Indeed, although the sluggishness of the Ancien R?gime and the upheavals that followed the Revolution contributed to France's failure to industrialize in the eighteenth century, the Revolution proved to be the salvation of French science and "helped decisively shift the centre of scientific excellence back from England to the continent" (Rose & Rose, 1969, p. 19). The liberalizing impetus behind the Revolution was opposed to science as an attribute of aristocratic culture and many revolutionaries considered technological advance to be merely a means of impoverishing artisans and the emergent working class. But there was also a firm conviction that, in the hands of the people, science would be a powerful force for the nation's good."
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Nuclear Energy, 2002.
Discusses the issue of nuclear energy as a power source.
1,774 words (approx. 7.1 pages), 7 sources, APA, $ 57.95
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Abstract
This paper is an examination of nuclear energy as a power source, focusing on the environmental impacts associated with producing and using the fuel. The history of the development of nuclear technology is briefly discussed. Then some of the positive attributes associated with nuclear power are given, as an argument for having pursued this technology despite its many uncertainties and pitfalls. Next, the many drawbacks commonly associated with nuclear power are presented, including the problem of radioactive waste. The paper concludes with a short look into what the U.S. government is doing to address the situation created by the nuclear industry and the areas in which it falls short of solving the problems at hand.
From the Paper
"Safety concerns have rightly plagued the nuclear industry since its inception. On one front, there is the threat of nuclear proliferation, which has already become a reality with feuding countries like India and Pakistan, both possessing nuclear capabilities. This poses a major threat to the global population as well as the global environment. If even one of these weapons were to be detonated, the immediate impact on human and other biological life would be devastating. But the long term effects to the ecosystem are assumed to be equally as grave and ruinous."
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"Toward a General Theory of Hurricanes", 2002.
Summarizes and analyzes the article, "Toward a General Theory of Hurricanes" by professor of meteorology Kerry A. Emanuel.
1,523 words (approx. 6.1 pages), 1 source, $ 50.95
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Abstract
This paper summarizes the article written by Prof. Kerry A. A. "Toward a General Theory of Hurricanes" which appeared in the July, 1988 edition of "American Scientist" and which calls for the placement of the physics of hurricanes in a more general context. The paper shows that Emanuel's reasoning behind this is that it would allow scientists to predict how the frequency and intensity of these storms would respond to changes in climate and allow scientists to relate hurricanes to seemingly different phenomena such as oceanic storms of the polar night and dust devils.
From the Paper
"The question of why hurricanes are so rare is considered next, for it is often known that there are several empirical condition that are necessary but not sufficient for the formation of hurricanes. There is some limitation which prevents these from being sufficient in most cases, and Emanuel considers a number of numerical simulations which may give a clue. He says there is a need for a strong starting disturbance, and this is consistent with the observation that real hurricanes never start spontaneously. The model of Rotunno and Emanuel is asymmetric and does not allow variations of the explicitly calculated fields around circles centered at the storm center. To start a hurricane, it was necessary to impose on the basic state a weak vortex which decays upward from the surface. This is the disturbance which starts the process toward a hurricane."
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Device Isolation of Integrated Circuits, 2002.
This paper is a literature review of recent articles about the evolution of the universal building blocks used by logic circuit designers.
3,650 words (approx. 14.6 pages), 26 sources, APA, $ 101.95
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Abstract
This paper states that interconnects and isolation has been, is and will continue to be the key factors that limit the performance and costs of integrated circuits. The author points out that as technology is scaled below a quarter micron, the problems associated with interconnect are ever more pressing and could potentially become the roadblock to progress. This paper concludes that technology is changing the physical size of circuitry, allowing an 11 Million transistors on an 80 mmz die, but this is only a short respite before other technologies allow more and more processing to be done in smaller spaces with less.
Table of Contents
Overview
The Need for Device Isolation Defined
The Evolution in Manufacturing and Deposition Technology
The Evolution in Materials Choice for Device Isolation
A Critical Review of Literature from 1997 through mid-1999
Conclusion
From the Paper
"Essential to chip fabrication is a process called lithography, which resembles the printing of a photograph by shining light through a negative onto a photosensitive surface. To produce features less than 0.1 mm wide, semiconductor companies face the task of developing methods that involve light or other electromagnetic radiation of wavelengths much shorter than those commonly used today. The shorter the wavelength, the finer the line can be sharply drawn."
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The Mystery of Modern Science, 2002.
A discussion of the effect of magic and religion on modern science.
895 words (approx. 3.6 pages), 1 source, MLA, $ 31.95
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Abstract
This paper examines how magic and religion have always seemed to be at odds with the scientific community and how ironically enough they were major contributors to the motivation and means behind the Scientific Revolution. It looks at how many of the leaders of discovery in that time were heavily influenced by religious matters and how men like Descartes, Newton and Galileo saw their work as evidence of God?s infinite wisdom. It examines the specific circumstances surrounding scientific discovery in the 1600s and the natural philosophers themselves and evaluates the influence of these factors on methodology and motivation.
From the Paper
"Magic was redefined as well. The new interest that began the Scientific Revolution was due in part to a desire for more practical convenience. Mechanism and alchemy came directly from magic and the occult, but according to our present definition of magic, this fact is blurred. We tend to view the mystical, demonic, or spiritual side of magic as the whole, but in truth, scientists took the physical, known use of magic and renamed it SCIENCE. At one time, using an herb or a mineral solution to cure a physical ailment was considered natural magic. To use one thing in nature to affect another, to study their interaction closely, and to derive conclusions from this intimate knowledge of the natural power of things, was an early form of the Scientific Method. This method was taken directly from natural magicians."
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Two Kinds of Color, 2002.
Explores the distinction between phenomenal and physical color, using the views of philosophers.
4,634 words (approx. 18.5 pages), 6 sources, APA, $ 119.95
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Abstract
This paper advances the argument that the colors we consciously experience are not the same as whatever colors may exist in the external world/ This means that even if color is a real physical property of things in the world, the colors objects ?actually? have are not the same as the colors we experience them as having. This is not to say that things we see as being red may actually be blue, but rather that red, blue, and all of the other colors that comprise human color experience do not exist outside of that experience, regardless of whether there is an objective property of color in the world. This paper uses considerations put forward by George Berkeley and John Locke as well as current philosophers, neuroscientists and physicists. It approaches the topic from both a scientific standpoint as well as a philosophical one, though more emphasis is put on the latter.
From the Paper
"Berkeley simply extends this argument to additionally cover Locke?s primary qualities, which he argues are likewise only known to us through our senses and perceptions. If colors, smells, tastes, etc., do not exist objectively in the world because they are not independent of the senses, then, by Berkeley?s reasoning, nothing can exist independently of perception because our knowledge of everything in the world ? including the primary qualities, which are the basic entities of all objects ? also stems entirely from our senses. Berkeley?s argument is largely based on the false reasoning that physical things in the world could not possible cause ideas in us , so his conclusion is easy to shrug off. But there is something very intriguing in the points he makes leading up to that misstep: We are indeed limited in our knowledge of the world by our inability to observe external things independent of our senses."
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Turing Machines, 2002.
Discusses Classical Turing Machines.
2,250 words (approx. 9.0 pages), 9 sources, $ 79.95
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Abstract
Discusses Classical Turing Machines. Their relationship to quantum computing and Quantum Turing Machines. Defines a Turing Machine, what it does and compares present day computing to the Turing Machine. Quantum computational approaches. Quantum mechanics. Major results associated with quantum computing. The Turing Machine as a theoretical model. Its use in science. Recursive functions.
From the Paper
"Abstract
An overview is presented that investigates Classical Turing Machines and their relationship to quantum computing and Quantum Turing Machines. The examination begins by exploring the original work of Alonzo Church and Alan Turing, defining what is a Turing Machine, and discussing the differences between recursion and interation and how this relates to the overall debate on comparing present day digital computing to the Turing Machine.
Because the Turing Machine is a theoretical contrivance, it still has limitations placed upon it that can be generally overcome by considering quantum computational approaches. In order to understand quantum computing, one must first become familiar with the basics of quantum mechanics as they relate to this approach."
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Physics and Taoism, 1995.
Examines the relationship between the views of modern science and ancient Eastern religion on material reality.
1,575 words (approx. 6.3 pages), 7 sources, $ 55.95
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From the Paper
"The purpose of this research is to examine certain relationships between the conception of material reality in modern physics and Taoism. The plan of the research will be to set forth the philosophical context in which physics and Taoism have been considered together, and then to discuss the details of intersection between these two seemingly disparate disciplines.
To see how 20th-century physics relates to Taoism, which essentially dates from the life and writings of Laotse (born 571 B.C.),1 it is necessary to explore how the development of theoretical physics in modern Western culture appears to have uncovered affinities with the more ancient culture of the East. The connections have entered the popular culture since the 1970s, notably with the publication of Zukav's Dancing Wu Li Masters: An Overview of the New Physics in 1979, and Capra's The Tao of ..."
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John Dalton's Atomic Theory, 1995.
Examines the ideas of this 18th Century-19th Century scientist and natural philosopher on chemical structure.
1,800 words (approx. 7.2 pages), 6 sources, $ 63.95
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From the Paper
"John Dalton's Atomic Theory
Through his study of gases, John Dalton arrived at some of the most important theoretical concepts in modern chemistry. He established a system whereby relative particle weights can be obtained from available chemical data. In addition, he devised a simple system of rules for chemical combination. Dalton also provided a framework for a system of atomic symbolism. His atomic theory is very useful for explaining a wide variety of physical and chemical phenomena.
Some have called John Dalton the father of the atomic theory of chemistry (1:83). His exact birth date is unknown. By his death in 1844 at the age 78, Dalton had devised some of the most fundamental ideas of modern chemistry (3:984). Indeed, many view the scientist as one of the founders of modern chemistry."
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