| Papers [1-16] of 100 :: [Page 1 of 7] | | Go to page : 1 2 3 4 5 6 7 —> | Search results on "HAIR FIBER": |
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Hairs and Fibers by Forensic Microscopy, 1999.
A breakdown of the process to match hair and fibers to a person by law enforcement officials.
1,200 words (approx. 4.8 pages), 6 sources, AU$ 60.95
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Abstract
This paper discusses how hairs and fibers are used in forensic research. The author explains the properties of hair, and how knowing the many varieties can help in solving a crime. Similarly, the author provides charts of various fibers and explains how a scientist can utilize this information.
From the Paper
"You brush up against countless people and surfaces over the course of a day. Each one leaves remnants of the contact- including fibers and hair. You pick hairs off of your clothing, clean a hairbrush, or cut loose threads from a garment; all these tiny items can be identifiable in virtually any situation. In the cases of violence or struggle, large transfers of both take place; an attacker pulls a victim?s hair out, a victim grabs at an attacker?s shirt and rips it, getting fibers under his or her nails, etc. Each piece of this minute evidence provides a means of identification and the ability to solve a crime."
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Hair and Fiber Analysis, 2004.
A look at the various comparison and identification techniques for hair and fibers and their role as physical evidence.
1,731 words (approx. 6.9 pages), 7 sources, MLA, AU$ 80.95
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Abstract
This paper discusses the roles of hair and fibers as physical evidence in forensic science. It concentrates on the physical composition, identification methods, recovery techniques and implications as evidence. This forensic science research paper also provides an analytical discussion of the implications that the various methods have in the field of criminology.
From the Paper
"Hair and fibers are superficially similar. They may frequently be found together as trace evidence, and the methods of studying them are often similar. In fact, hair and fibers are quite different: Hair as an appendage of human or animal skin, growing out of an organ known as the hair follicle; fibers are strands of natural or manufactured material. Some animal-hair coverings such as wool and mohair are classified as natural fibers, but such issues of terminology are just that and do not affect the process of identification. Although hair is discovered as evidence at many crime scenes and often appears on the bodies of victims of violence, it represents class or general evidence, rather than individual evidence. One person?s hair cannot yet be individualized to the exclusion of anyone else, although DNA research, which involves testing the root of the hair, may make near individualization possible. Hair is valuable evidence and much can be learned from a few strands. It also resists chemical decomposition and retains its structural features for a long time. In contrast to hair, fibers and cloth fragments offer much greater evidential value because they incorporate numerous variables. These include the number of fibers in each strand, the diameter of strands and fibers, the direction and number of twists, the type of weave, the dye content, as well as the presence of any foreign material that may be adherent to fibers or embedded among them."
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Bidirectional Fiber Transmission, 2005.
A comparison of single fiber and dual fiber realization of bidirectional fiber transmission.
2,040 words (approx. 8.2 pages), 10 sources, MLA, AU$ 94.95
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Abstract
This paper begins with an explanation of the four common methods of providing bidirectional communications between two devices and then explains the technique of transmitting multiple optical signals on a single optical fiber known as wavelength division multiplexing. The paper concludes with a comparison of single fiber transmission and dual fiber transmission and an explanation of the advantages of single fiber transmission.
From the Paper
"Duplexing methods determine the overall throughput that is shared between the two directions of transmission: downstream and upstream. The important property of a duplex method is its ability to achieve a good distribution of high data rates for all the loops in a cable binder. If the same frequency bands are used simultaneously for both upstream and downstream transmission in a cable binder, the available capacity will be severely affected."
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Fiber Optic Technologies, 2008.
This paper explores the uses of fiber optic cabling today.
2,066 words (approx. 8.3 pages), 4 sources, APA, AU$ 95.95
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Abstract
The paper discusses the advantages of using fiber optic cabling in the configuration of networks and examines the role of fiber optic cabling in the creation of networks in the context of the open systems interconnection (OSI) model. The paper also explains the four dominant types of fiber optic cabling in use and shows how fiber optic cables are interconnected both with each other and to high-speed computer systems through the use of a fiber distributed data interface (FDDI). In addition, the paper looks at the future of fiber optic cabling.
Outline:
Introduction
Defining the role of Fiber Optic in the OSI Model
Types of Fiber Cabling
Specialized Interface used with Fiber Optics
Summary
From the Paper
"Fiber optic technologies are typically used within local (LAN) and wide-area networks (WANS) as this specific type of cabling is capable of very high transfer rates while at the same time not requiring repeaters to strengthen signals as they go across the cable from one location to another on a network. Fiber optic cabling is typically used for those networks that require very high speeds for a distance of 50km or less. As a cabling technology, fiber optic cabling resides at the Data Link layer of the OSI Model, which is discussed later in this paper."
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Inadequacy of Forensic Hair Analysis, 2006.
An in-depth study of forensic hair analysis and its role in crime solving.
5,774 words (approx. 23.1 pages), 45 sources, MLA, AU$ 201.95
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Abstract
This paper analyzes forensic hair analysis, and traditional evidentiary methodologies, concluding that although forensic hair analysis is often instrumental to crime solving, it is essentially inadequate unless extensive nuclear and mitochondrial DNA analysis is also conducted and considered. It also discusses technological advances in this area, and the future of DNA testing in the United States.
Table of Contents:
Introduction
History of Forensic Hair Analysis
Hair Analysis: The Process
DNA Testing
Forensic Hair Analysis and DNA Analysis
DNA Testing Compliance
Comparison of Hair Examination and other Evidentiary Methodologies
Future Advances in DNA Testing
Conclusion
From the Paper
"The science of hair comparison has been used in thousands of criminal cases all over the United States for decades. Hair, because of its widespread presence at crime scenes, has great evidentiary value in forensic science. Even if a suspect has tried to clean the crime scene of any evidence such as personal possessions, fingerprints or footprints, hair strands always seem to stick in the matter found in that area. Since hair is so personal to individuals, it serves as a great indicator of who was there. The forensic testing of hair strands has very early roots. It was first used as evidence in 1861, but did not gain scientific acceptance until after the turn of century, and public acceptance until the late 1950's. During this time the public acceptance of hair testing was widespread, and police received enormous support for any evidence consisting of hair strands."
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Fiber Optics, 2006.
This paper examines the science of fiber optics while also discussing its impact in the field of telecommunications.
1,226 words (approx. 4.9 pages), 6 sources, MLA, AU$ 60.95
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Abstract
This paper traces the roots of fiber optic technology back to the 19th century when a British physicist first discovered the phenomenon of total internal reflection of light. The writer of this paper clearly details the makeup of fiber optics, which are thin strands of purified glass that transfer information in the form of light. This paper examines the various uses for fiber optics, as well as the advancements made to this particular technology which are constantly evolving. This paper also analyzes the manner in which fiber optic technology has revolutionized the field of telecommunications.
Table of Contents:
Introduction
History of Fiber Optics
Design
Fiber Optics (Advantages and Disadvantages)
Advancement of Fiber Optic Technology
Conclusion
Bibliography
From the Paper
"Optical fibers are nothing but thin strands of highly purified glass that transmit data in the form of light. These individual glass strands have a diameter of around 120 micrometers and are bundled together as optical cables that can transmit data upto 50 Km without the need for repeaters. Each optic fiber can be divided into three distinct layers namely the innermost layer or the core, the cladding layer that immediately covers the core and the outermost buffer coating made of plastic that is designed to protect the fiber from weather and other external damages. While the core is the glass medium on which light travels the cladding layer is used to reflect the escaping light back into the core and thus minimize the optical signal loss. The lower refractive index of the cladding material facilitates reflection of light back into the core region. Thus by using total internal reflection, optical fibers can carry data in the form of light pulses over large distances with little loss."
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100 Years of Technical Advancement in Hair Science, 2006.
The paper examines the history behind hair science since Victorian times.
3,580 words (approx. 14.3 pages), 8 sources, APA, AU$ 146.95
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Abstract
The paper shows how hair science is a direct result of commercial interest in the industry, and its important role in economics and the social world, which has fostered its profound development over the last century. The hair care industry is a multi-million dollar business with serious economic, technological, social, and fashion attributes. Hair styles have changed dramatically, serving as part of the socio-cultural process of identity construction, gender relations, and political expression. Likewise, they have been as influenced by the social constructions they nurture. The paper examines the last half of the century which has witnessed the most development in hair science, with technical advancement evident in the at-home focus of many products, the introduction of chemical understandings to hair care, and the infrastructural focus on speed and results that has characterized the digital revolution.
Outline:
Introduction
Social and Anthropological Changes
Fashion Follows Societal Norms and Recognition
Beauty at the Turn of the Century
The Great Depression
At Home Styling: Science and Industry in the Middle of the Century
Industrial Growth Spurs Technological Advancement
Market Responds to Social and Consumer Forces
Works Cited
From the Paper
"At the dawn of the century, the start of the 1900s ushered out the very end of the Victorian era. Known most for its political and revolutionary socio-cultural transformations, the Victorian era was also one of excess, superficial concentration, and popular culture. Hair was an integral part of the culture. "While women's hair, particularly when it is golden, has always been a Western preoccupation, for the Victorians it became an obsession." This infatuation with hair was neither a passing fad nor just an aesthetic attention, but it was a mechanism of societal imagery, assertion of gender norms, and the greater product of cultural symbols."
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Animal Hair: Forensic Science, 2002.
An overview of the process of examining animal hair to be used as forensic evidence.
900 words (approx. 3.6 pages), 2 sources, AU$ 51.95
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Abstract
This paper focuses on the steps involved in examination of animal hair specimen obtained as part of forensic evidence. Forensic science is being extensively used in crime investigations today and hair can thus provide important clues. But the results obtained after examination may not always be accurate because of the limitations of forensic analysis. The paper discusses these limitations along with the kind of results one can obtain from hair analysis.
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Fiber Communication, 2004.
Discusses the history and development of the technology known as fiber optics.
4,145 words (approx. 16.6 pages), 10 sources, MLA, AU$ 162.95
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Abstract
This paper provides an explanation of the technology used in fiber optics, looks at its limitations and how some of these limitations are being addressed and solved, describes how fiber optic technology is evolving, and details the benefits of fiber optic technology.
From the Paper
"The transmission system for fiber optics consists of a fiber optic transmitter and receiver, and both are connected through fiber optic cables. These systems provide a lot of advantages over the systems which use copper or coaxial cables. The first of these is their ability to carry a lot more information than copper cables or coaxial cables and deliver the data with much greater accuracy. They can transmit data at much higher speeds and this can be done at even longer distances than coaxial cables. This property makes it an ideal medium for use for serial digital data. The fiber itself does not get affected by interference from practically all sources, including lightning. The cable does not conduct electricity. This helps it even if the cable comes into direct touch with high voltage electrical equipment and power lines. The cables cannot create ground loops. The fiber itself is made of glass and is thus chemical proof and does not corrode. (Introduction to Fiber Optics)"
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Hair Salons, 2004.
This paper is an ethnographic study of the ritual of hair salons.
1,610 words (approx. 6.4 pages), 4 sources, MLA, AU$ 80.95
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Abstract
This paper is an anthropological field project on the ritual of hair salons. The author points out multiple meanings of hair salons in minority communities. The paper relates the role of hair salons in women's concern with self-image and social interaction.
From the Paper
"For many women, especially those from minority backgrounds such as African Americans and Hispanics, hair salons constitute more than a place for getting a haircut. Rather they are considered to be an integral part of the economic and social makeup of minority communities."
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Fiber Optics Touch Our Daily Lives., 2000.
This paper reviews some of the uses of fiber optics in communications.
5,270 words (approx. 21.1 pages), 5 sources, APA, AU$ 190.95
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Abstract
The following essay consists of a brief overview of the history of fiber optics. It also discusses the current uses of fiber optics in communications in voice, image, and data transmission. The writer also looks into the future uses of fiber optics as a key role in communications.
From the Paper
"There is nothing in the world that gives us more power or confidence than having information. There are few things that we cannot do if we have the proper information to do it with. In addition, the ability to communicate that information is essential to the successful advancement of society. Information is the key to all foundational understanding and the ability to transmit information in a variety of ways allows us to expand our horizons, individually, societally and physically. Mankind has been working on ways to pass information since the beginning of time."
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Fiber Optics, 2002.
This paper analyzes fiber optics technology and what it can do for networks.
900 words (approx. 3.6 pages), 6 sources, AU$ 51.95
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Abstract
This paper focuses on the hardware behind fiber optics technology, particularly the cabling. The author discusses how fiber works and what it can do and why it's a technological leap over previous networking technologies, which rely on copper wiring. The author points out some of the advantages and applications of fiber optic technology.
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Colorectal Cancer Risks and Fiber, 2006.
An analysis as to whether increasing the daily intake of insoluble fiber can help women reduce the risk of colorectal cancer.
2,845 words (approx. 11.4 pages), 12 sources, MLA, AU$ 123.95
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Abstract
This paper questions whether women who are vigilant in taking insoluble fiber on a daily basis, can help fight off or reduce the development of colorectal cancer. This paper reviews the peer-reviewed and scholarly literature about this topic and is followed by a summary of the research in the conclusion. A personal reaction to the analysis is also included.
Introduction
Review and Discussion
Conclusion
Reaction
Works Cited
From the Paper
Heart disease, breast and colorectal cancer, and osteoporosis in postmenopausal women are the leading causes of death, disability, and frailty among older women of all races and socioeconomic backgrounds in the United States today (Bowen, Hunt, Kaplan et al. 1997:101). Further, a range of behavioral and lifestyle factors play a powerful role in each of these diseases, and behavioral interventions may be useful for their prevention. As noted above, after lung cancer, colorectal cancer is the second leading cancer killer in the United States Gaziano & Horowitz 2001) (other authorities, though, report colorectal cancer is third, after lung and breast cancer for women (Bowen, Hunt & Kaplan et al. 1997:114).
According to a recent report in the Journal of Environmental Health (2004), though, "Among white women, lung cancer is the second most common cancer, and colorectal is the third most common cancer. Among black and Asian/Pacific Islander women, colorectal cancer and lung cancer are the second and third most common cancers, respectively" ("U.S. Cancer Incidence: Prostate Cancer and Breast Cancer Are Most Common" 61). Interestingly, Rhode Island reported the highest incidence of colorectal cancer among men, and Alaska the highest incidence rate among women; by contrast, New Mexico reported the lowest incidence rate of colorectal cancer for both men and women in the United States (U.S. Cancer Incidence: Prostate Cancer and Breast Cancer Are Most Common" 61)."
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Fiber Optics, 2004.
An overview of the history and development of fiber optics.
1,242 words (approx. 5.0 pages), 5 sources, MLA, AU$ 62.95
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Abstract
This paper looks at fiber optics, a technology that has been developing and improving the way the world communicates for more than two centuries. It examines its origins in the year 1790, when a French engineer named Claude Chappe invented a system for sending messages, and how Chappe's optical communication system incorporated the use of tall towers with a series of semaphores mounted on top of each tower. It also looks at its development over the years from its use by Alexander Graham Bell in his ?photophone? to the first optical telephone communication system created in 1977.
From the Paper
"William Wheeler?s contribution to fiber optics came during the same year as Alexander Graham Bell?s. His contribution was, ironically looked over during his time, just as Bell?s was. William Wheeler found a way to run pipes, which contained light through buildings and such that aided in the illumination of dark areas. He accomplished this by coating the tubes with a highly reflective substance that carried the light through the whole tube. His patented mechanism was over looked because around the same time Thomas Edison had invented the ?electric lamp? a.k.a. the light bulb. Just as Bell?s photophone, Wheeler?s mechanism wasn?t as practical as others."
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Fiber Optics, 2002.
A description of fiber optics and the concept of the last mile.
1,900 words (approx. 7.6 pages), 6 sources, AU$ 103.95
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Abstract
This paper describes the innovation of fiber optics and the concept of the last mile.
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Fiber Reinforced Polymers and Earthquakes, 2008.
A research proposal to examine the improvement in the seismic behavior of timber structures using fiber reinforced polymers (CFRP).
1,564 words (approx. 6.3 pages), 4 sources, MLA, AU$ 75.95
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Abstract
This paper discusses how increasing the strength and improving the behavior of timber structures during periods of seismic stress is a worldwide concern and how structural collapse is one of the most frequent causes of death during an earthquake. It proposes a study to examines the hypothesis that timber bonded to CFRP will withstand the stresses of horizontal displacement longer than timber alone, or CFRP alone. It also explores new techniques of bonding CFRP to timber in order to produce a structure that can withstand horizontal and frequency displacement by earthquakes. The ultimate goal of the proposed study is to improve design to withstand seismic activity and minimize deaths in earthquake prone regions.
Outline:
Theoretical Background
Hypothesis
Methodology
From the Paper
"An earthquake is defined in terms of the degree of horizontal displacement and the frequency of this displacement. Song & associates (2002) used finite element analysis to test failure parameters of various types of reinforced concrete shell structures. They used a layered shell element with a pressure node. The layered shell element used by them can be adapted to simulate the laminated bond of CFRP to the timber substrate. The parameters of this technique will be adapted to reflect the materials being tested. This finite element analysis technique will be subjected to the seismic stress factors discovered in Ciccoti & Associates (2006) in order to determine the amount of seismic strain that the three constructed models can withstand. "
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