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2007

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Stress Distribution And Strength Prediction Of Composite Laminates With Multiple Holes, Brian Esp Dec 2007

Stress Distribution And Strength Prediction Of Composite Laminates With Multiple Holes, Brian Esp

Mechanical and Aerospace Engineering Dissertations - Archive

The major purpose of this study was to investigate failure of composite laminates with multiple unloaded holes in close proximity. The least square boundary collocation method for anisotropic materials was utilized to determine the state of stress. The approach utilized collocation on both the internal and external boundaries, making it relatively easy to implement. The method compared favorably to both published and finite element solutions. A failure prediction approach for an infinite, symmetric and balanced laminate, with two holes in close proximity was presented. The baseline material for consideration was IM7/977-3, a carbon fiber/epoxy lamina. The failure prediction method was …

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An Analytical And Numerical Model For Design Of Non- Uniformly Powered Silicon Chips Based On Both Thermal And Device Clock Performance, Abhihit D. Kaisare Dec 2007

An Analytical And Numerical Model For Design Of Non- Uniformly Powered Silicon Chips Based On Both Thermal And Device Clock Performance, Abhihit D. Kaisare

Mechanical and Aerospace Engineering Dissertations - Archive

Silicon chips continue to grow in capabilities, complexity and performance. Silicon chips typically integrate functional components such as logic and level two (L2) cache memory in their architecture. This functional integration of logic and memory results in improved performance of the chip. However, the integration also introduces a layer of complexity in the thermal design and management of silicon chips. As a direct result of functional integration, the power map on a silicon chip is typically highly non-uniform and the assumption of a uniform heat flux across the chip surface has been shown to be invalid post Pentium II architecture. …

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Thermal Stresses Of Composite Beams With Rectangular And Tubular Cross-Sections, Chia-Wei Su Dec 2007

Thermal Stresses Of Composite Beams With Rectangular And Tubular Cross-Sections, Chia-Wei Su

Mechanical and Aerospace Engineering Theses - Archive

Closed-form analytical solutions for laminated composite beams with tubular and rectangular cross-sections are developed for evaluating the thermal induced stresses. The derivations are based on modified lamination theory and parallel axis theorem. The present approach includes variation of ply stiffness along the contour of the cross-section. The interlaminar shear stress of cantilever composite beam with rectangular cross-section under a transverse load is analytically proved to be independent of temperature change in uniform temperature environment. Three-dimensional finite element models for computing thermal stresses of both cross-sections are developed using commercial software package ANSYS 10. The results obtained from analytical solutions give …

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Growth/Decline Of Employment Subcenter In Polycentric Regions: The Case Of The Dallas-Fort Worth Metropolitan Area, Maher Sayel Al-Shammari Dec 2007

Growth/Decline Of Employment Subcenter In Polycentric Regions: The Case Of The Dallas-Fort Worth Metropolitan Area, Maher Sayel Al-Shammari

Planning Dissertations - Archive

This research is concerned with explaining the variation in growth rates among employment subcenters. The purpose of the study is to find answers to the question: What factors/variables contribute to the growth or decline of employment subcenters? More specifically, the study aims to 1) identify and describe employment subcenters in the Dallas-Fort Worth metropolitan area, and 2) explain the variation in their growth rate over a specified period of time through testing a set of variables extracted from related literature. A multiple regression analysis technique is employed to complete the empirical analysis. The DFW metropolitan area was chosen as a …

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Cellular Targets Involved In Reovirus-Induced Oncolysis Of Ras-Transformed Cells, Jung Hwa Chung Dec 2007

Cellular Targets Involved In Reovirus-Induced Oncolysis Of Ras-Transformed Cells, Jung Hwa Chung

Biology Theses - Archive

Reovirus is a ubiquitous virus with demonstrated oncolytic properties. In this study, we investigate the pathways which reovirus produces a lytic infection in SV-40 transformed WI-38 cells and the noncytocidal infection of normal WI-38 cells using microarray technology. The analysis revealed that reovirus infection induced changes in 178 genes, of which 112 genes were up regulated and 66 genes down regulated. Of the 112 up regulated genes, 13 of the WI-38 2RA genes were shown to be involved in apoptosis or inhibition of cellular DNA synthesis. Of the 66 genes down regulated, seven of the WI-38 genes displayed effects involved …

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Rcd-1 Related:A Positively Selected Retrogene With Spermatogenesis Function In Drosophila, Taniya Muliyil Dec 2007

Rcd-1 Related:A Positively Selected Retrogene With Spermatogenesis Function In Drosophila, Taniya Muliyil

Biology Theses - Archive

Gene duplication is one of the major forces in driving genome evolution. Our study focuses on a particular retrogene Rcd-1 related (Rcd-1r) that originated through retroposition of the parental gene Required for cell differentiation 1 (Rcd-1) about 5-13 million years ago. Rcd-1r is present in D. melanogaster, D. simulans, D. sechellia and D. mauritiana whereas the parental gene is present in all the Drosophila species. Rcd-1r is inserted in the 3' UTR of the gene CG13102 and it is encoded in the complementary strand. Previous studies by Castrillion et al. showed that a P element inserted in the 5' UTR …

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Ral Interacting Protein (Ralbp1): Linking Glutathione Conjugate Transport To Oxidative Stress Defenses And Signaling Pathways, Dilki Wickramarachchi Dec 2007

Ral Interacting Protein (Ralbp1): Linking Glutathione Conjugate Transport To Oxidative Stress Defenses And Signaling Pathways, Dilki Wickramarachchi

Chemistry & Biochemistry Dissertations - Archive

The glutathione-conjugate transporter protein DNP-SG ATPase was demonstrated to be identical to the independently cloned Ral-effector, Ralbp1. Glutathione-conjugate transport is linked to substrate-stimulated ATPase activity, while GTPase stimulating activity (GAP-activity), and clathrin-coated pit-binding activity was demonstrated for this protein by different groups of investigators. The relationship between these activities and physiological functions of Ralbp1 were not clear. The present studies were designed to address the hypothesis that the ability of Ralbp1 to couple the hydrolysis of ATP with the movement of substances, i.e. its transport activity, is the crucial element that allows Ralbp1 to function as a stress-defense protein. Results …

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Studies Towards Bioactive Imidazoles, Karuna Koda Dec 2007

Studies Towards Bioactive Imidazoles, Karuna Koda

Chemistry & Biochemistry Theses - Archive

The work presented in this thesis focuses on the development of an enantioselective and practical route form the total synthesis of villagorgin via haplosleridamine imidazole alkaloid containing β- carboline moiety by employing the well-known Pictet-Spengler and Fischer indole reactions. We approached two different ways inorder to synthesize these molecules Our first approach focused on using a Dieckmann condensation, requiring the preparation of the corresponding diester. Initial attempts to prepare this substrate directly from histidine were unsuccessful, however after conversion to the N-benzzylamine and reductive amination with ester provided the key diester compound. Unfortunately, attempts to effect the Dieckmann reaction were …

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Supramolecular Chemistry On Carbon Dioxide, Hexiang Zhang Dec 2007

Supramolecular Chemistry On Carbon Dioxide, Hexiang Zhang

Chemistry & Biochemistry Theses - Archive

This dissertation describes approaches towards designs, syntheses, characterizations, and applications of supramolecular chemistry on carbon dioxide. Chapter 1 briefly overviews the field of supramolecular chemistry and highlights its horizons, also introduces the progress of sensing devices on chemical warfare agents. Chapter 2 introduces a modular approach to detect chemical warfare agent: phosgene by Fluorescence Resonance Energy Transfer (FRET). It combines the chemical reactivity between amines and phosgene with fluorescence properties of coumarin fluorophores, forms a fast, selective and reliable sensing system. Chapter 3 overviews the chemistry between amines and carbon dioxide and introduces the applications of this reaction in molecular …

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Reluctant Restorationist: Thomas Campbell's Trial And Its Role In His Legacy, Charles Franklin Brazell Dec 2007

Reluctant Restorationist: Thomas Campbell's Trial And Its Role In His Legacy, Charles Franklin Brazell

History Dissertations - Archive

In 1809, Thomas Campbell, with his son Alexander, founded an American religious movement that proposed the union of all Christians based upon the restoration of the New Testament church. The merging of this movement in 1832 with that of Barton W. Stone resulted in the formation of the Stone-Campbell Movement - a movement whose ideas for Christian unity were expressed by Thomas Campbell in his Declaration and Address, and which had the fundamental objective of achieving Christian unity based upon the teachings of the New Testament. Today, the Stone-Campbell Movement consists of three major American Protestant religious groups. The Christian …

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They Don't Sing Like They Used To : Negro Soldier's Resistance To Jim Crow In 1898, Earl Ray Levingston Dec 2007

They Don't Sing Like They Used To : Negro Soldier's Resistance To Jim Crow In 1898, Earl Ray Levingston

History Theses - Archive

By the turn of the twentieth century, Negro troops began to resist Jim Crow laws in an organized way. While some historians have mentioned these racially motivated disturbances, many have failed to seriously analyze and assess these clashes, which has led to the neglect of an important source of African-American resistance to racial discrimination in the post Reconstruction era. The purpose of this thesis is to address that failure. By briefly examining the evolution of Jim Crow policies at the turn of the century, by demonstrating how blacks struggled to serve in the U. S. army from 1673- 1868, by …

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"Does Your Throat Hurt More In The Morning Or Throughout The Day?" "Yes.": Intercultural Medical Discourse, Sarah Elizabeth May Dec 2007

"Does Your Throat Hurt More In The Morning Or Throughout The Day?" "Yes.": Intercultural Medical Discourse, Sarah Elizabeth May

Linguistics & TESOL Dissertations - Archive

An increasing number of immigrants to the United States do not use English as their first, or even second, language. Members of the medical community who treats such patients often do not speak the range of home languages of their patients. As a result of the absence of a common language, many patients are forced to communicate the best they can with their physicians in English. This study focuses the interactions of non-native English speaking patients with their doctors when interpreters were unavailable. Interactions between health care providers and non-native English speaking patients at a university health clinic were videotaped …

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Surface Patterning Of Biodegradable Polymer In Tissue Engineering By Applying Photolithography, Lee-Chun Su Dec 2007

Surface Patterning Of Biodegradable Polymer In Tissue Engineering By Applying Photolithography, Lee-Chun Su

Material Science and Engineering Theses - Archive

The prevalence of cardiovascular disease and inherent problems with current surgical therapies has prompted major efforts in the field of vascular tissue engineering. While there have been significant advances towards creating functional blood vessel substitutes, the fabrication of a vascular graft with mechanical, structural and functional properties similar to native vessels has not yet been achieved. We have presented an observation of a new biodegradable polymer utilized on the research of tissue engineering. Our idea was to create a structure to imitate blood vessel muscles in vitro and also to guide the cells when they start spreading and trying to …

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Thermally Activated Sulfurization Scheme For Cuins2 Solar Cells, Karan Agrawal Dec 2007

Thermally Activated Sulfurization Scheme For Cuins2 Solar Cells, Karan Agrawal

Material Science and Engineering Theses - Archive

Chalcopyrite Solar Cells are now being fabricated on flexible (polymer) substrates. However, CuInS2 solar cells have not been fabricated on the polymer substrates on the commercial scale due the sulfurization temperature which limits the use of polymer substrates during fabrication. To overcome this problem a thermally activated sulfurization process for the manufacture of CuInS2 solar cells from the Cu-In bilayers is described in this work. This sulfurization process can be employed for lower temperature for the formation of the absorber layer. For the sulfurization, the Cu-In bilayer with different compositions is prepared by thermal evaporation in which the In-rich film …

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Uniform Weighted Compact / Non-Compact Schemes For Shock / Boundary Layer Interaction, Peng Xie Dec 2007

Uniform Weighted Compact / Non-Compact Schemes For Shock / Boundary Layer Interaction, Peng Xie

Mathematics Dissertations - Archive

The critical problem of CFD is perhaps an accurate approximation of derivatives for a given discrete data set. Based on our previous work on the weighted compact scheme (WCS), a uniform weighted compact / non-compact scheme (UWCNC) has been developed. Similar to WENO, three high order candidates, left, right, and central, are constructed by using Hermite polynomials. According to the smoothness, three weights are derived and assigned to each candidate. The weights will lead the scheme to be upwind-biased when approaching the shock or other discontinuities but quickly becomes central, compact, and of high order just off the shock. Therefore, …

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Today's Army: An Examination Of The Differences Of Newspaper Coverage About America's Army In Small And Large Markets, Kimberly Levine Hanson Dec 2007

Today's Army: An Examination Of The Differences Of Newspaper Coverage About America's Army In Small And Large Markets, Kimberly Levine Hanson

Communication Theses - Archive

This study examines differences in coverage of prominent Army news stories in a daily newspaper in a rural town near an Army post and the nearest metropolitan area. Past media and visual effects research suggests that newspaper coverage sets the agenda not only for its readers, but for other mass media, as well. As the American population moves in and around metropolitan regions and further away from any major Army presence, newspaper coverage may become essential in informing the general public about the Army that serves them. A content analysis over a two-month timeframe of the Killeen Daily Herald and …

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Ductile Lightweight Concrete For Lightweight Structural Application, Ake Piyamaikongdech Dec 2007

Ductile Lightweight Concrete For Lightweight Structural Application, Ake Piyamaikongdech

Civil Engineering Theses - Archive

This study developed a ductile concrete for precast wall systems which are capable of resisting high wind in excess of 500 mph. The developed concrete mix design consists of sand, cement, glass fiber, and a foaming agent to produce lightweight concrete in the range of 87 pcf (1392 kg/m3) to 90 pcf (1440 kg/m3). A comprehensive testing program for evaluation of the developed concrete material was undertaken. The mix designs were prepared both in the laboratory and in the mix truck with drum capacity of 27 ft3 (0.77 m3), and 177.6 ft3 (5 m3), respectively. The large concrete batches using …

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Learning Video Preferences Using Visual Features And Closed Captions, Darin Brezeale Dec 2007

Learning Video Preferences Using Visual Features And Closed Captions, Darin Brezeale

Computer Science and Engineering Dissertations - Archive

Viewers of video now have more choices than ever. As the number of choices increases, the task of searching through these choices to locate video of interest is becoming more difficult. Current methods for learning a viewer's preferences in order to automate the search process rely either on video having content descriptions or on having been rated by other viewers identified as being similar. However, much video exists that does not meet these requirements. To address this need, we use hidden Markov models to learn the preferences of a viewer by combining visual features and closed captions. We validate our …

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The Race Gap: Education Of Black Youth In Boston, Alix Cantave Ph.D., Cheryl Holmes Ph.D., Barbara Lewis Ph.D. Dec 2007

The Race Gap: Education Of Black Youth In Boston, Alix Cantave Ph.D., Cheryl Holmes Ph.D., Barbara Lewis Ph.D.

William Monroe Trotter Institute Publications

On April 23, 2007, The William Monroe Trotter Institute held a Roundtable convening more than fifty individuals at UMass Boston for a two-hour conversation on the education of black children in Boston. Roundtable attendees represented a balanced mix of professional and lay persons, including educators, advocates, academics, elected officials and policymakers, and donors. Attendees included the Suffolk County Sheriff, the Acting Superintendent of Boston Public Schools (BPS), and the president of the Boston Teacher’s Union.

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Modeling An Information Literacy Programme For Undergraduates: A Soft Systems Methodology Approach / Nor Edzan Che Nasir, Che Nasir Nor Edzan Dec 2007

Modeling An Information Literacy Programme For Undergraduates: A Soft Systems Methodology Approach / Nor Edzan Che Nasir, Che Nasir Nor Edzan

Student Works (2000-2009)

In its simplest form, information literacy is defined as the ability to recognise a need for information and from there on, one is able to locate, retrieve, evaluate and use the procured information effectively. The acquisition of information literacy skills is deemed by many as a necessity for the Information Age and it is termed by many as a life long learning skill. Set against such a background, this study is centred on the issue of information literacy competencies of Malaysian final year ICT undergraduates. The focus is on final year undergraduates at the Faculty of Computer Science and Information …

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New Teacher Job Satisfaction : Effects Of General Job Facets And Teacher Job Specific Facets., Aimee G. Webb Dec 2007

New Teacher Job Satisfaction : Effects Of General Job Facets And Teacher Job Specific Facets., Aimee G. Webb

Electronic Theses and Dissertations

This study addressed the job satisfaction of new teachers in Jefferson County Public Schools (JCPS). in Jefferson County, Kentucky. The JCPS district is the 29th largest in the United Sates and serves over 98,000 students. Understanding what contributes to the satisfaction and retention of new teachers in a large urban school district has implications for cost effective human resource management and student achievement. The researcher mailed a district-wide survey questionnaire about new teacher job satisfaction using procedures developed by Dillman (2000). The survey mailing yielded a sample of 630 participants. The researcher computed: (a) descriptive statistics, (b) principal components factor …

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Globalization And Social Work Education : An Initial International Inquiry., Elaine Rushmore Wright Dec 2007

Globalization And Social Work Education : An Initial International Inquiry., Elaine Rushmore Wright

Electronic Theses and Dissertations

With an increasing awareness of a global-local reality, social work research and theorizing on globalization is limited but growing. From a multinational perspective, the purpose of this dissertation was to contribute to the emerging professional discourse through (a) an examination of definitions and dimensions of globalization and (b) and an exploration of the impact of globalization on social work education. Perspectives on globalization were collected on a newly designed and translated survey from 46 social work educators from schools and social work in China, Germany, Russia, and the United States of America. Descriptive analysis and the coding of themes were …

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A Cross National Validation Of Child Sexual Abuse Predictors., Juanita E. Briceno-Perriott Dec 2007

A Cross National Validation Of Child Sexual Abuse Predictors., Juanita E. Briceno-Perriott

Electronic Theses and Dissertations

An exploratory cross national study was conducted to determine if factors identified in the existing literature predictive for CSA in developed countries were also valid and predictive CSA factors for females in Belize, a developing country. The conceptual framework adapted from current CSA literature included the choice of CSA definition, the number and specificity of questions used to elicit CSA response and the questionnaire response rate. Variables investigated were adopted from CSA literature and included: the presence of a stepfather in the family, parent figure (mother figure, father figure) alcohol use, parent figure (mother figure, father figure) child care, family …

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The Research Practices And Needs Of Non-Profit Organizations In An Urban Center, Randy Stoecker Dec 2007

The Research Practices And Needs Of Non-Profit Organizations In An Urban Center, Randy Stoecker

The Journal of Sociology & Social Welfare

How do nonprofit organizations use data and research? What challenges do they face in conducting research and managing data? In spring of 2004, 80 nonprofit organizations in Toledo, Ohio returned a survey on their research and data needs and practices. The survey found that nonprofits collect data on a wide variety of topics, but do not use much of the data that they collect, and do not collect much data that could be useful for other groups, particularly neighborhood organizations. The average nonprofit in the survey has five employees and four volunteers who, together, spend 56 hours per week collecting, …

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Index Of Volume Xxxiv, Issues 1-4 Dec 2007

Index Of Volume Xxxiv, Issues 1-4

The Journal of Sociology & Social Welfare

No abstract provided.

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Dismantling The Master's House : Deconstructing The Roots Of Antiblack Racism And The Construction Of The "Other" In Judaism, Christianity And Islam., John Chenault Dec 2007

Dismantling The Master's House : Deconstructing The Roots Of Antiblack Racism And The Construction Of The "Other" In Judaism, Christianity And Islam., John Chenault

Electronic Theses and Dissertations

This critical inquiry into the social constructions of "black" and "white" identities analyzes the roles of the three "western" monotheisms (Judaism, Christianity and Islam) in the cognitive and sociohistorical developments of racial slavery and antiblack racism. Specifically, it investigates the sociohistorical consequences of the inherent dualisms of the "western" monotheisms and how those dualisms are expressed in the production of social theories and systems that rely on believer/non-believer oppositions and binaries defined by a Manichaean view of the universe and a teleological conception of history that fosters and sustains an eternal holy war against infidels. What emerges from this analysis …

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Formulation Of Lean Six Sigma Critical Business Processes For Manufacturing Facilitites, Chaucey Chandler Dec 2007

Formulation Of Lean Six Sigma Critical Business Processes For Manufacturing Facilitites, Chaucey Chandler

Industrial, Manufacturing, and Systems Engineering Dissertations - Archive

The author desired to create a method organizing the concepts from Lean, Six Sigma, critical business processes, and simplifying the usage of these concepts to identify Lean Six Sigma Critical Business Processes. Inspired by Laura Meade (1997) and the author's passion concerning process improvements, this research was created. Lean activities eliminate waste, Six Sigma activities eliminate variation, critical business processes focus on those areas that need improvement and are critical to the process, and Analytical Network Process (ANP) models problems considering the interactions between levels. There is value for all companies to implement at least one of these tools. Since …

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Gateshead Revisited: Perceptual Simulators And Fields Of Meaning In The Analysis Of Metaphors, L. David Ritchie Dec 2007

Gateshead Revisited: Perceptual Simulators And Fields Of Meaning In The Analysis Of Metaphors, L. David Ritchie

Communication Faculty Publications and Presentations

In an extension and partial reformulation of Conceptual Metaphor Theory (Lakoff & Johnson, 1980), Ritchie (2003, 2004, 2006) proposed that the linguistic expressions cited as evidence of complex conceptual metaphors can be parsimoniously interpreted in terms of perceptual simulators (Barsalou, 1999), often within extended fields of meaning, which may be but are not necessarily anchored in underlying conceptual metaphors. Cameron (2003, 2007) added substance and precision to the focal concept of communicative context, and showed how metaphors can be analyzed both as part of an overall pattern of figurative language in a communicative event. In this essay a series of …

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Symposium Foreword, Jane Campbell Moriarty Dec 2007

Symposium Foreword, Jane Campbell Moriarty

Tulsa Law Review

No abstract provided.

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Sybil Attack Detection In A Hierarchical Sensor Network, Jian Yin, Sanjay Kumar Madria Dec 2007

Sybil Attack Detection In A Hierarchical Sensor Network, Jian Yin, Sanjay Kumar Madria

Computer Science Faculty Research & Creative Works

The Sybil attack is a particularly harmful threat to sensor networks where a single sensor node illegitimately claims multiple identities. a malicious node may generate an arbitrary number of additional node identities using only one physical device. the Sybil attack can disrupt normal functioning of the sensor network, such as the multipath routing, used to explore the multiple disjoint paths between source-destination pairs. But the Sybil attack can disrupt it when a single adversary presents multiple identities, which appear on the multiple paths. Digital certificates are a way to prove identities, but they are not suitable for the sensor network …

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