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Computational Modelling Of Tube Production Process For Nickel-Base Alloys., Young Ryul Kim Jan 1997

Computational Modelling Of Tube Production Process For Nickel-Base Alloys., Young Ryul Kim

Graduate Theses, Dissertations, and Problem Reports (ETD)

Numerical modelling simulations of two dimensional tube extrusion and three dimensional tube pilgering reduction of nickel-base alloys were conducted using a commercial finite element code, DEFORM{dollar}\\sp{lcub}\\rm TM{rcub}{dollar}. Accuracy of the finite element modelling results was verified quantitatively by comparing solid extrusion simulation results with experimental data. An interface frictional coefficient was also examined and the best fit was selected for the simulation. As expected, heat loss of the extruded material was found to be significant due to temperature-dependent material properties of the alloy. A sequence of selected FEM tube extrusion simulations using DEFORM{dollar}\\sp{lcub}\\rm TM{rcub}{dollar} were carried out and based on …

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Lived Experiences Of Male Nursing Students With Caring., Patricia Jean Young Jan 1997

Lived Experiences Of Male Nursing Students With Caring., Patricia Jean Young

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fifteen male nursing students from four baccalaureate nursing schools in West Virginia participated in this phenomenological study. The phenomena of interest was the lived experiences of male student nurses related to caring. Demographic data was obtained in the interview process. Semistructured interview questions were used in the individual interviews, which were all audiotaped. The methodology used was based on the Swanson-Kauffman and Schonwald method, which entailed the four step process of bracketing, analyzing, intuiting, and describing. Five themes were identified. The Primacy of Caring was the first theme. Characteristics of caring, the origins of caring, the lived experiences of caring …

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Estimation Of The Longitudinal And Lateral-Directional Aerodynamic Parameters From Flight Data For The Nasa F/A-18 Harv., Alfonso Christopher Paris Jan 1997

Estimation Of The Longitudinal And Lateral-Directional Aerodynamic Parameters From Flight Data For The Nasa F/A-18 Harv., Alfonso Christopher Paris

Graduate Theses, Dissertations, and Problem Reports (ETD)

This research is focused on parameter identification for the NASA F/A-18 HARV. The HARV is currently used in the high alpha research program at the NASA Dryden Flight Research Center. In this study the longitudinal and lateral-directional stability derivatives are estimated from flight data using the Maximum Likelihood method coupled with a Newton-Raphson minimization technique. The estimated aerodynamic model describes the aircraft dynamics over a range of angle of attack from 10{dollar}\\sp\\circ{dollar} to 60{dollar}\\sp\\circ{dollar}. The mathematical model is built using the traditional static and dynamic derivative buildup. Flight data examined in this analysis are from a variety of maneuvers including …

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Integrating Technology Education Concepts Into China's Educational System., Faxian Yang Jan 1997

Integrating Technology Education Concepts Into China's Educational System., Faxian Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

The problem of this study was to develop a strategy for integrating technology education concepts within the Chinese mathematics and science curricula. The researcher used a case study as the basic methodology. It included three methods for collecting data: literature review, field study in junior and senior secondary schools in America and China, and interviews with experienced educators who were familiar with the status of technology education programs in the selected countries. The data came from the following areas: Japan, Taiwan, the United Kingdom, China, and five states in the United States: Illinois, Iowa, Maryland, Massachusetts, and New York. The …

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Application Of Automotive Engine Control Technology To General Aviation Aircraft Powerplants., Christopher John Tennant Jan 1997

Application Of Automotive Engine Control Technology To General Aviation Aircraft Powerplants., Christopher John Tennant

Graduate Theses, Dissertations, and Problem Reports (ETD)

The general aviation industry has lagged behind the automotive industry in powerplant development due to depressed economic conditions in their marketplace. Recent efforts to revitalize the industry have encountered the hindrance of thirty-year-old engine technology. Current automotive engine control technology has been reviewed for its potential for transfer to existing general aviation powerplants. Current automotive engine control technology was classified into basic, correction, and feedback elements for the control of fuel flow and ignition timing. The value of each element was assessed for application to a general aviation powerplant in terms of an aviation duty cycle. An extensive database produced …

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Risk Based Analysis Of Levees., Anthony Lewis Brizendine Jan 1997

Risk Based Analysis Of Levees., Anthony Lewis Brizendine

Graduate Theses, Dissertations, and Problem Reports (ETD)

A multi-phased research program consisted of performance of both laboratory and field test programs, development of hydraulic conductivity probability density functions, and development of a first generation risk model to assess relative risk among groups of levees to determine rank for systemic allocation of scarce rehabilitation resources. The laboratory test program consisted of determining basic soil properties at four USACE WES REMR demonstration sites: Talulla, MS, Sny Island, IL, Skagit, WA, and Elkhorn, CA. Additionally, flexible wall hydraulic conductivity tests were performed with subsequent development of hydraulic conductivity probability density functions (PDF's). The field testing program consisted of conducting in …

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Religiousness And Adjustment In Dementia Caregivers., George David Allen Jan 1997

Religiousness And Adjustment In Dementia Caregivers., George David Allen

Graduate Theses, Dissertations, and Problem Reports (ETD)

It was the aim of this dissertation to determine if and how religiousness in family members caring for relatives suffering from dementia affects the mental health of family caregivers. To that end two theories were presented for testing in the form of path models. These theories were based on stress-process cognitive theory as adapted to the dementia caregiver situation. In this theory caregiver strain (mental distress) was thought to be mediated by cognitive appraisal, and appraisal to be influenced by contextual characteristics, personal and family resources, and stressors. Model one proposed that intrinsic religious orientation would mediate between the burdens …

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Computer Programming: Science, Art, Or Both?, Sandra Trent Gum Jan 1997

Computer Programming: Science, Art, Or Both?, Sandra Trent Gum

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to determine if spatial intelligence contributes to a student's success in a computer science major or if mathematical-logical intelligence is sufficient data on which to base a prediction of success. The study was performed at a small university. The sample consisted of 15 computer science (CS) majors, enrolled in a computer science class, and 15 non-CS-majors, enrolled in a statistics class. Seven of the CS-majors were considered advanced and seven were considered less advanced. The independent measures were: the mathematics and the English scores from the ACT/SAT (CS-majors); a questionnaire to obtain personal information; …

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Intensive Supervised Probation And Institutional Placements For Adjudicated Youth: A Closer Look., Cleaster Marie Jackson Jan 1997

Intensive Supervised Probation And Institutional Placements For Adjudicated Youth: A Closer Look., Cleaster Marie Jackson

Graduate Theses, Dissertations, and Problem Reports (ETD)

With the alarming rate of school violence and teen crime public outcry demands that we look for immediate remedies to make schools and communities safe. One solution which has received public support is the current trend to solve this problem by building more juvenile facilities to house these youth. This short term fix, which has been referred to as an "out of sight out of mind mentality" creates other concerns such as loss of educational dollars to public schools and highlights the lack of commitment to provide effective programs to meet the needs of challenging students. The purpose of this …

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Effects Of Gypsy Moth Defoliation On Forest Vegetation And A Forest Bird Community., Jennifer Lewis Bell Jan 1997

Effects Of Gypsy Moth Defoliation On Forest Vegetation And A Forest Bird Community., Jennifer Lewis Bell

Graduate Theses, Dissertations, and Problem Reports (ETD)

Bird populations and forest vegetation were monitored before (1984-86), during (1987-88) and after (1989-96) a gypsy moth outbreak and subsequent defoliations at the Sleepy Creek Public Hunting and Fishing Area in Morgan and Berkeley Counties, West Virginia. The objective of this study was to examine how gypsy moth defoliation affected forest vegetation, and how changes in forest structure and composition affected bird populations and the nesting ecology of four bird species. Repeated defoliations killed many overstory trees (primarily oaks, Quercus spp.), opening the forest canopy and allowing vigorous growth of understory vegetation. Population numbers of many bird species that nested …

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Comparison Of Male And Female Osteopathic Student Perceptions Of The Status Of Women In The Osteopathic Medical Education Environment., Carolyn Bailey Thompson Jan 1997

Comparison Of Male And Female Osteopathic Student Perceptions Of The Status Of Women In The Osteopathic Medical Education Environment., Carolyn Bailey Thompson

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to compare the perceptions held by female and male osteopathic students in regard to the status of women in the osteopathic medical education environment. Three general categories were examined: family/career conflict, professional representation, and gender discrimination. A sample of 576 students finishing their second year of education at five osteopathic medical schools in the United States was surveyed with a final return rate of 69.44%. Schools were selected by purposive sampling and data were analyzed using general linear models. The focus of the analysis was to compare the perceptions females and males reported regarding …

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Convection Patterns In Chemical Reactions., Yunqing Wu Jan 1997

Convection Patterns In Chemical Reactions., Yunqing Wu

Graduate Theses, Dissertations, and Problem Reports (ETD)

By coupling the standard reaction-diffusion equations with the hydrodynamic equations, we study the convection patterns in chemical reactions. We investigate the onset of convection and the transition of convection patterns induced by compositional density gradients of chemical wave propagations in the Belousov-Zhabotinsky reaction and the iodate-arsenous acid reaction through direct numerical simulations. We find that in a vertical slab the chemical wave causes the onset of convection above a critical point. The convective flows deform the chemical concentration patterns as well as enhance chemical wave propagation speed. We observed several different convection patterns including a single convective roll as well …

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Identity Management And Decision-Making Strategies Of Lesbian Women At Various Stages Of Identity Development: An Ethnographic Study., Joy Sharon Whitman Jan 1997

Identity Management And Decision-Making Strategies Of Lesbian Women At Various Stages Of Identity Development: An Ethnographic Study., Joy Sharon Whitman

Graduate Theses, Dissertations, and Problem Reports (ETD)

This was a qualitative study designed to explore how women at various stages of lesbian identity development manage and make decisions about managing their identities. Management of identity was explored in terms of how women came out or stayed hidden and how they made decisions to both disclose and conceal. It used Cass' (1979) Stage Allocation Measure, based on her model of homosexual identity development, as a means to categorize women at various stages of lesbian identity development. Twenty-five adult women were individually interviewed, using a semi-structured interview schedule. In addition, participants agreed to maintain a journal for one month …

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Crime And The Nation: Prison Reform And Popular Fiction In Philadelphia, 1786-1800., Peter Thomas Okun Jan 1997

Crime And The Nation: Prison Reform And Popular Fiction In Philadelphia, 1786-1800., Peter Thomas Okun

Graduate Theses, Dissertations, and Problem Reports (ETD)

The prison reformers and fiction writers of post-Revolutionary Philadelphia wrote prodigiously about crime and punishment. In a correlative study, I explore juridical topoi in reformist and fictive texts familiar to republican Philadelphians. My analysis assumes a public sphere of writers and readers: while late eighteenth-century prison reforms and fictions came out of separate signifying systems, there was considerable promiscuity between them. I group areas of overlap around cultural concerns (science, murder, sex) and representational "spaces" (home, prison, nation). In either discourse, crime and punishment were useful to a post-Revolutionary aesthetic of nationalism. The scientific rhetoric of penitentiary punishment targeted the …

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First-Movement Cadenzas For Wolfgang Amadeus Mozart's Piano Concertos K. 466, 467, 482, 491, 503 And 537., Tean-Hwa P'Ng Jan 1997

First-Movement Cadenzas For Wolfgang Amadeus Mozart's Piano Concertos K. 466, 467, 482, 491, 503 And 537., Tean-Hwa P'Ng

Graduate Theses, Dissertations, and Problem Reports (ETD)

All of Wolfgang Amadeus Mozart's solo piano concertos require a cadenza to be inserted ad libitum toward the end of the first movement. We have original first-movement cadenzas by Mozart for all of his concertos except K. 466, 467, 482, 491, 503, and 537. For these six, there are two viable solutions to the cadenza problem: the performer can either provide his own cadenza or select a cadenza written by someone else. It is the premise of this study that the cadenza should be stylistically consistent with the parent concerto movement. Therefore, its purpose is to develop a model for …

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Performance-Tunable Distributed Execution Of Object-Based Software., George Braden Rinard Jan 1997

Performance-Tunable Distributed Execution Of Object-Based Software., George Braden Rinard

Graduate Theses, Dissertations, and Problem Reports (ETD)

The central challenge in software engineering research and practice is to improve the quality and performance of software systems, while decreasing the cost for producing such systems. While the combination of parallel execution with component-based software construction provides opportunities for addressing the software development challenge, it also raises a fundamental distributed software engineering dilemma, not adequately addressed in the literature. This dilemma is a result of the following two observations: (1) The quality and productivity benefits of reusability accrue only when reusable components are used without modifications. (2) For improved performance in a distributed environment, it must be possible to …

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Increased Exposure To Specific Types Of Narrative As A Mechanism Of Change In Theory Of Mind Development., Nicole Marie Ruther Jan 1997

Increased Exposure To Specific Types Of Narrative As A Mechanism Of Change In Theory Of Mind Development., Nicole Marie Ruther

Graduate Theses, Dissertations, and Problem Reports (ETD)

Over the past decade, researchers have become increasingly interested in children's developing "theories of mind," the attribution of thoughts and beliefs to both themselves and others, and the description of relations between mental states and actions. Although earlier work was focused on identifying the age at which children obtain such knowledge, more recently researchers have begun to investigate the mechanisms responsible for the development of a child's theory of mind. The purpose of the present study was to experimentally examine the importance of narrative as a mechanism through which children come to understand relations between people's thoughts and actions. Thirty-seven …

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An Investigation Of Selected Variables To Predict Student Performance On The National Council Licensure Examination For Registered Nurses (Nclex-Rn) In One Baccalaureate Degree Nursing Program., Denise Ann Landry Jan 1997

An Investigation Of Selected Variables To Predict Student Performance On The National Council Licensure Examination For Registered Nurses (Nclex-Rn) In One Baccalaureate Degree Nursing Program., Denise Ann Landry

Graduate Theses, Dissertations, and Problem Reports (ETD)

The primary purpose of this study was to determine how well academic, demographic, and programmatic variables could explain and predict variation in graduate performance on NCLEX-RN in one baccalaureate nursing program. The study specifically sought to address the void in empirical research in the area of programmatic variables predictive of NCLEX-RN performance. The study also investigated whether the changes made in NCLEX-RN from a paper-and-pencil test to computer adaptive testing (CAT), which was initiated in 1994, could help explain variations experience in program pass rate between 1990 and 1996. The population was composed of 360 May and June graduates from …

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Conceptual Knowledge Of A Normative Life Event: The Impact Of Intellectual Ability, Age, Experience And Attachment On The Concept Of Death., Elizabeth Rooney Levelle Jan 1997

Conceptual Knowledge Of A Normative Life Event: The Impact Of Intellectual Ability, Age, Experience And Attachment On The Concept Of Death., Elizabeth Rooney Levelle

Graduate Theses, Dissertations, and Problem Reports (ETD)

The present study investigated differences in the conceptualization of death among children and adults with and without mental retardation (MR). Thirty-five adults (17 adults without MR, 18 adults with MR) and 29 children (21 children without MR, 8 children with MR) participated in the study. The study employed a 2 x 2 design with Age and MR as the factors. Participants completed several questionnaires, cognitive developmental tasks, and intelligence assessments. Results indicated that diagnosis of mental retardation was slightly more influential than chronological age in determining participants' responses about death. This effect was evident for the Universality and Causality components …

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Robust Design Optimization With Applications To Composite-Material Structures., Satheesh Makkapati Jan 1997

Robust Design Optimization With Applications To Composite-Material Structures., Satheesh Makkapati

Graduate Theses, Dissertations, and Problem Reports (ETD)

The problem of robust design and optimization for designs with varying operating conditions is considered in this work. A robust design optimization tool (RDOT) has been developed in this work. The tool is constructed with building blocks: an Artificial Neural Network, a Response Evaluator (e.g., FEA, etc.), an Optimizer based on Quadratic Programming, Cooperative Game Theory, Design of Experiments, and Taguchi Methods. The tool is fully codified into a computer program, and it demands very little designer insight into the problem under consideration. Design optimization is necessary to efficiently accomplish a design that, while satisfying the desired functionality, also uses …

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The Effect Of Estrogen On The Transcriptional Regulation And The Chromatin Remodeling Of The Very Low Density Apolipoprotein Ii Gene., Elizabeth Mambo Jan 1997

The Effect Of Estrogen On The Transcriptional Regulation And The Chromatin Remodeling Of The Very Low Density Apolipoprotein Ii Gene., Elizabeth Mambo

Graduate Theses, Dissertations, and Problem Reports (ETD)

The chicken very low density apolipoprotein II (apoVLDLII) gene encodes an egg yolk protein that is synthesized in the liver in response to estrogen. Regulation of this gene is mediated by the estrogen receptor via two estrogen response elements (EREs) located in the promoter. Following the administration of estrogen, there is a four hour lag period prior to the detection of apoVLDLII mRNA. To examine the events that occur during this lag period, in vivo footprinting and run-on transcription assays were performed. Time courses of the transcription of the apoVLDLII gene were done using the transcription run-on assay. The antisense …

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A Neural Network Based Inference Engine Generator For Comprehension And Translation Of English And Spanish Commands To Unix "E-Mail" And "Vi" Editor., Mohammad Reza Moozoun Jan 1997

A Neural Network Based Inference Engine Generator For Comprehension And Translation Of English And Spanish Commands To Unix "E-Mail" And "Vi" Editor., Mohammad Reza Moozoun

Graduate Theses, Dissertations, and Problem Reports (ETD)

Since the advent of computers, scientists have tried to use the human languages for communication with computers. This pursuit has led several scientists, such as Chomsky to establish that there must be a specific part of the brain adapted to language learning and processing genetically, namely the "language organ". Humans are able to understand and produce sentences that they may have never heard. This leads to the understanding that language must follow some strict rules of processing which is referred to as "grammar of a language". The Artificial Neural Networks (NN) inspired by the neural networks of biological systems have …

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Family Firo Model Perspectives On Physical Spouse Abuse: An Exploratory Study., Antoinette Sgarlata Wiseman Jan 1997

Family Firo Model Perspectives On Physical Spouse Abuse: An Exploratory Study., Antoinette Sgarlata Wiseman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Control is often a central concept in the explanation and treatment of physical spouse abuse. This study examined the usefulness of W. J. Doherty's and N. Colangelo's Family FIRO Model in explaining issues of control in physically aggressive couple relationships. The model is an adaptation of W. Schutz's Fundamental Interpersonal Relations Orientation theory, which predicts the interpersonal fit in relationships from the satisfaction of the partners' intrapersonal inclusion, control, and affection needs. In further describing these needs, Doherty and colleagues place issues related to control in separate need areas, which could affect the initial focus of treatment. Thirty couples recruited …

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Comparison Of A Pin Cam And An Inverted Pin Cam Design Based On The Parameters Used For The Axial Vane Rotary Engine (Beta Version)., Phillip Howard Burnside Jan 1997

Comparison Of A Pin Cam And An Inverted Pin Cam Design Based On The Parameters Used For The Axial Vane Rotary Engine (Beta Version)., Phillip Howard Burnside

Graduate Theses, Dissertations, and Problem Reports (ETD)

The comparison of two design variations of the Axial Vane Rotary Engine (AVRE) was done by evaluating several parameters. These two designs are called the Pin Cam and the Inverted Pin Cam designs. The first step involved developing a technique to determine the heat loads on the components of the engines since the engine is running at a steady state loading condition. The second step used this thermal data to get a final temperature profile. The third step combined the thermal data and the combustion data to perform a structural analysis of the engine components. This illustrated both the stresses …

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Faculty Stance Toward Multiculturalism And Multicultural Education: A Qualitative Study., Jane Sheridan Cardi Jan 1997

Faculty Stance Toward Multiculturalism And Multicultural Education: A Qualitative Study., Jane Sheridan Cardi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Studies indicate that the implementation of multiculturalism into university general education course requirements such as introductory American literature is sporadic. Furthermore, although research suggests that faculty are more frequently including multicultural literature in their courses, there is little research concerning what faculty believe about multiculturalism and multicultural education and how faculty actually teach multiculturalism in higher education. The purpose of this study is to contribute to the knowledge of why faculty do or do not implement multiculturalism into their curricula and if they do, how they implement it. This study uses phenomenological and hermeneutic research methods to explore the stances, …

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Nationbuilding And The Military: The Life And Career Of Secretary Of War Henry Knox, 1750-1806., Michael Darryl Carter Jan 1997

Nationbuilding And The Military: The Life And Career Of Secretary Of War Henry Knox, 1750-1806., Michael Darryl Carter

Graduate Theses, Dissertations, and Problem Reports (ETD)

The following dissertation is an examination of the life of Henry Knox and his rise from a small bookstore owner in colonial Boston to a major general commanding the entire Continental artillery in the Revolutionary War through his tenure as Secretary of War in President George Washington's cabinet. A symbol of the vast majority of common men throughout America, Knox sought opportunity during the Revolution to rise above his position, fought with stubborn determination to win American independence, and struggled to bring his visions for the new nation and its military into being. He forged bonds of loyalty with George …

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Challenges Facing Colleges And Schools Of Pharmacy Over The Next Ten Years: A Survey Of The Deans., Jerald Wayne Fisher Jan 1997

Challenges Facing Colleges And Schools Of Pharmacy Over The Next Ten Years: A Survey Of The Deans., Jerald Wayne Fisher

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to determine what pharmacy deans believed to be the major internal and external challenges facing schools of pharmacy over the next ten years. The instrument for data collection was a descriptive opinion survey, consisting of two questions, that was sent to all U.S. school of pharmacy deans (n = 79). The deans were asked to provide what they believed to be the five major internal and external challenges facing their schools, and to provide two strategies for hastening the desirable or delaying the undesirable effects of each challenge. A response rate of sixty-percent (47 …

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The Effects Of Error Detection Instruction On Developmental Algebra Students., Susan Limpert Goodwin Jan 1997

The Effects Of Error Detection Instruction On Developmental Algebra Students., Susan Limpert Goodwin

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study posed the following questions: (a) Does error-detection instruction improve students' confidence levels and/or reduce anxiety? (b) Do students find error-detection instruction helpful? (c) Do students' methods and awareness of error detection change after instruction? and (d) Does age, sex, math background or personality influence attitudes toward errors and error detection? College developmental algebra students received error-detection instruction during a semester-long beginning algebra course. They discussed errors and error detection mainly through the medium of "Pat Perplexed" problems. Pat was a mythical student who rarely got a problem correct. Pat's errors were corrected and explained collaboratively. Research on transfer, …

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The Use Of Simplified English To Improve Task Comprehension For Non-Native English Speaking Aviation Maintenance Technician Students., Douglas Eckert Jan 1997

The Use Of Simplified English To Improve Task Comprehension For Non-Native English Speaking Aviation Maintenance Technician Students., Douglas Eckert

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this research was to determine if the use of Simplified English (SE) improved task comprehension of non-native English speaking aviation maintenance technician students in a non-English speaking environment. A background questionnaire, one test, and four controlled language instruments were administered to each subject. The test, Accuracy Level Test (ALT) by Ronald P. Carver, measured the Spanish subjects English reading ability by grade level. The four instruments were aviation maintenance task cards and tests developed by Boeing Aircraft which measured subject comprehension of maintenance procedures. The participants were 148 Mexican aviation maintenance technician students, mechanics, and instructors from …

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The Characterization Of Pulsed Glow Discharge Phenomena By Mass Spectrometry And Optical Spectroscopies., Robert Ernest Steiner Jan 1997

The Characterization Of Pulsed Glow Discharge Phenomena By Mass Spectrometry And Optical Spectroscopies., Robert Ernest Steiner

Graduate Theses, Dissertations, and Problem Reports (ETD)

From lightning in the summer sky to the neon lamp outside of the department store, electrical discharges have become commonplace fixtures in many aspects of everyday life. Although these devices have been present for a significant time period, their principals of operation are still only vaguely understood. The focus of these studies is to characterize a particular analytical plasma, the glow discharge, and more specifically, to develop a better understanding of the fundamental processes that occur during power modulated operation. The characterization of both power modulated r.f. and d.c. glow discharge plasmas was performed using mass spectrometry as well as …

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