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Theses/Dissertations

1995

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A Bedtime Storybook Reading Intervention With Deaf Children, Catherine Wilson Gillespie Dec 1995

A Bedtime Storybook Reading Intervention With Deaf Children, Catherine Wilson Gillespie

Doctoral Dissertations

Although it has been found that young deaf children's patterns of emergent literacy can parallel those of hearing children, deaf children's emergent literacy development and conventional reading abilities are often delayed when compared to hearing children. Storybook reading by adults is an empirically supported method for fostering hearing children's literacy development. In this study, storybook reading was investigated as an intervention technique with deaf children. Subjects were 9 experimental and 9 control children aged 4 to 11 who lived in randomly selected residential cottages at a state-sponsored school for the deaf. Experimental subjects and their peers participated in 30-minute bedtime …

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A Morphometric Analysis Of Pleistocene And Recent Succineidae (Pulmonata) : The Dynamics Of Stasis, Michael David Green Dec 1995

A Morphometric Analysis Of Pleistocene And Recent Succineidae (Pulmonata) : The Dynamics Of Stasis, Michael David Green

Doctoral Dissertations

Members of the family Succineidae, like many other pulmonate landsnails of North America, are thought to have remained morphologically static during the Pleistocene. In order to evaluate this claim, it is necessary to (1) have the ability to identify the various succineid species from their shells, (2) grasp the functional significance of morphological change if it occurs, (3) understand the extent of succineid morphological variation and how it is partitioned in space, and (4) apply knowledge gained from modern species to their fossil representatives. Succineids are karyotypically diverse and conchologically conservative. Among and within related genera, it is often difficult …

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Sand Burying Behavior In Neotropical Species Of Lizards, Liolaemus, Tropiduridae : A Phylogeny Of The Boulengeri Group, Monique Halloy De Grosse Dec 1995

Sand Burying Behavior In Neotropical Species Of Lizards, Liolaemus, Tropiduridae : A Phylogeny Of The Boulengeri Group, Monique Halloy De Grosse

Doctoral Dissertations

Sand burying behavior has been reported in many species of lizards spanning several taxonomic families. Burying behavior has been linked to possible functions such as predator escape, avoidance of extreme temperatures, or as an effective means of spending the inactive part of the daily or seasonal cycle. Rarely is the behavior itself described or, even more unusually, referred to in a historical context. This is understandable in light of a resistance to consider behavioral patterns stable enough within a species to be meaningful in an evolutionary setting. Nevertheless, many authors have verified the conclusion of early ethologists that behavioral characters …

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The Evaluation And Reduction Of Complexity In Position-Dependent Interactions In Machines Of Significant Complexity, Olakunle Harrison Dec 1995

The Evaluation And Reduction Of Complexity In Position-Dependent Interactions In Machines Of Significant Complexity, Olakunle Harrison

Doctoral Dissertations

In complex machines there are many functional interactions that depend on precise relative positions of functional elements, surfaces, subassemblies, and modules. Consequently, it is of utmost importance that the configuration of a complex machine be capable of satisfying the positional requirements of the various interacting elements. Traditionally, because of tight product schedules and the need to proceed to detailed design, only a limited amount of time is accorded this very important phase of the product development cycle. However, once the configuration of a complex machine is specified, it is only with great penalty that significant changes are made to the …

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Leadership Characteristics And Work Ethic Of Tennessee Argicultural Extension Service Home Economists, Connie Hollingsworth Dec 1995

Leadership Characteristics And Work Ethic Of Tennessee Argicultural Extension Service Home Economists, Connie Hollingsworth

Doctoral Dissertations

The primary purpose of this study was to examine the differences and relationships between leadership orientation and work ethic characteristics of Tennessee Agricultural Extension Service (TAES) home economists. Secondarily, it investigated the impact of job classification and geographical dispersion (district) on leadership and work ethic, separately and in combination. Social action theory and adaptation theory provided the theoretical framework for this research. A survey design was utilized to gather data from the entire population (N=183) of TAES home economists; 166 responses yielded an overall response rate of 91% on a three-part questionnaire transmitted through electronic mail (e-mail). Part …

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The Emergence Of Meaning In An Interdisciplinary Learning Environment : A Qualitative Study Of The James R. Stokely Institute For Liberal Arts Education, James K. Horn Dec 1995

The Emergence Of Meaning In An Interdisciplinary Learning Environment : A Qualitative Study Of The James R. Stokely Institute For Liberal Arts Education, James K. Horn

Doctoral Dissertations

The present research project was initiated to explore and understand the experiences of teachers who participated in the residential, interdisciplinary learning communities of the Stokely Institutes for Liberal Arts Education. What began for many Stokely Fellows as an intimidating prospect became for some a transformative learning experience that brought participants closer to themselves and their own potential, to others in their diverse groups, and to the larger world. How those initial feelings of anxiety and intimidation were transformed into challenge, accomplishment, and confidence is the subject of this study. Some who came to the Stokely Institute came with a sense …

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Tectonic Denudation Of Mesozoic Contractile Structures By A Low-Angle Normal Fault And Associated Faults, Southern White Pine Range, Nevada, Holly Langrock Dec 1995

Tectonic Denudation Of Mesozoic Contractile Structures By A Low-Angle Normal Fault And Associated Faults, Southern White Pine Range, Nevada, Holly Langrock

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Blackrock Canyon area in the southern White Pine Range, Nevada mostly consists of the highly extended upper plate of a low-angle normal fault, the Blackrock fault. The post-31.3 Ma Blackrock fault places upper Paleozoic sedimentary rocks and overlying Tertiary volcanic rocks of the Garret Ranch Group in its hangingwall against a 50 degrees E-dipping homocline of Cambrian through Mississippian rocks in its footwall. The 15 to 30 degrees W-dipping Blackrock fault is non-planar and consists of two fault segments and a pronounced corrugation, the Bull Spring corrugation. These geometric irregularities suggest the slip direction on the fault was east-southeast …

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Geochemical Evolution Of A Mid-Miocene Synextensional Volcanic Complex: The Dolan Springs Volcanic Field, Northwestern Arizona, Scott Michael Mcdaniel Dec 1995

Geochemical Evolution Of A Mid-Miocene Synextensional Volcanic Complex: The Dolan Springs Volcanic Field, Northwestern Arizona, Scott Michael Mcdaniel

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Dolan Springs volcanic field (DSV), of northwestern Arizona, is dominated by andesite and basaltic-andesite flows and breccias, with minor amounts of basalt, rhyolite, and ash-flow tuff. Geochemistry is used here as a tool to evaluate the roles and contributions of the lithospheric and asthenospheric mantles to magmatism related to Miocene extension in the Colorado River extension corridor (CREC). The majority of synextensional volcanic rocks in the DSV are geochemically similar to regional trends, but rare tholeiitic basalts erupted near the end of extension. The tholeiites have trace element signatures similar to ocean island basalt (OIB), but have isotopic values …

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Laser Driven Variable Dot Size Thermal Wax Transfer Printing, Steven Van Korol Dec 1995

Laser Driven Variable Dot Size Thermal Wax Transfer Printing, Steven Van Korol

Theses

A digital image hardcopy device has been designed using a laser exposure mechanism, a pigmented wax /resin donor ink sheet, and an opaque receiver sheet. The writing system relies on image-wise thermal mass transfer of molten ink to the receiver in order to produce high resolution output. With the receiver media and a specially designed donor ribbon being held to a platen through vacuum pressure, a pulsed solid-state diode pumped near IR NdrYAG laser provides the energy necessary to complete the thermal transfer process. By varying pulse width, dot size variation is possible. A mathematical model was developed to explain …

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Relational Equity And Household Division Of Labor As Predictors Of Marital, Parental, And Work Satisfaction For Dual-Earner Men And Women, Linda Gaile Blanding Dec 1995

Relational Equity And Household Division Of Labor As Predictors Of Marital, Parental, And Work Satisfaction For Dual-Earner Men And Women, Linda Gaile Blanding

Doctoral Dissertations

The purpose of this study was to examine the predictive value of a model comprised of relational equity, weekly hours of paid employment, and household division of labor on the dependent variables of marital, parental, and work satisfaction of 104 men and 98 women in dual-earner marriages. Household labor was measured in hours per week as reported by respondents and in their perception of their spouses' participation in nine categories subdivided into masculine and feminine tasks. Hierarchical multiple regression analyses showed that the first variable of relational equity was the most influential predictor of marital satisfaction for both men and …

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The Aqueous Alteration Of Cm Carbonaceous Chondrites, Lauren B. Browning Dec 1995

The Aqueous Alteration Of Cm Carbonaceous Chondrites, Lauren B. Browning

Doctoral Dissertations

The first multi-parameter scaling procedure for determining the relative degree of aqueous alteration that individual CM carbonaceous chondritic meteorites experienced is introduced. Modal proportions and average phyllosilicate compositions from 9 CM falls define 3 progressive alteration indices that are then used to identify 3 additional alteration trends based on whole-rock chemical data obtained from the literature. The proposed parameters produce a self-consistent order for the relative extent of alteration that the analyzed samples experienced, while the identified correlations themselves suggest constraints on asteroidal conditions during the alteration process. Sulfide rinds are ~10 μm thick coatings of fine-grained sulfides and phyllosilicates …

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Dna Restriction Fragment Analysis Using Size-Selective Capillary Electrophoresis With Laser Induced Fluorescence Detection, Brian Keith Clark Dec 1995

Dna Restriction Fragment Analysis Using Size-Selective Capillary Electrophoresis With Laser Induced Fluorescence Detection, Brian Keith Clark

Doctoral Dissertations

The development of DNA fingerprinting, new therapeutic agents, £ind gene cloning has had a dramatic impact on the health and welfare of the human population. The key to their success lies hidden within the genetic code (DNA). The ability to rapidly and reliably analyze DNA is essential to the continued advancement of these promising technologies. Unfortunately, conventional analytical methodologies require large expenditures of time and effort to obtain useful information. Thus, there is a desire to decrease the overall analysis time. In this work, the development of capillary electrophoresis (CE) methodologies to decrease the overall DNA analysis time is undertaken …

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Social, Economic And Political Origins Of The Iranian Revolution Of 1979, Hossein Daheshiar Dec 1995

Social, Economic And Political Origins Of The Iranian Revolution Of 1979, Hossein Daheshiar

Doctoral Dissertations

The goal of this research is to analyze the social, economic and political origins of Iranian Revolution. This analysis concentrates on two major questions. First, what factors led to the emergence of a pre-revolutionary society in Iran, and second, what variables were necessary to mobilize this revolutionary potential? This study found that both of the above conditions existed in Iran concurrently. A pre-revolutionary society had developed, and a highly organized contending elite, armed with a charismatic leadership and appealing ideology, and with access to mass scale communications network, had evolved with the intention to lead a revolution. Without the juxtaposition …

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The Influence Of Zooplankton On Biogeochemical Fluxes And Stoichiometry In An Arctic Marine System, Kendra Lee Daly Dec 1995

The Influence Of Zooplankton On Biogeochemical Fluxes And Stoichiometry In An Arctic Marine System, Kendra Lee Daly

Doctoral Dissertations

The role of the dominant zooplankton, calanoid copepods, in Arctic marine carbon and nitrogen cycles was investigated in the Northeast Water Polynya off the coast of Greenland during the summer of 1992 and 1993. This high-latitude system was characterized by relatively high molar carbon:nitrogen (C:N) ratios for dissolved and particulate pools in the euphotic zone relative to Redfield stoichiometry. Elevated C:N ratios (8.9) of particulate organic matter were interpreted to be a response by phytoplankton to nutrient limitation in open water regions, particularly in larger cells, and C:N ratios (9.6) of female copepods were even higher due to lipid storage. …

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Expert-Novice Differences In Clinical Decision Making, William E. Deal Dec 1995

Expert-Novice Differences In Clinical Decision Making, William E. Deal

Doctoral Dissertations

This paper reviews the cognitive science literature on expertise and presents methodology designed to examine expert-novice differences in the domain of clinical (psychology/psychiatric) diagnosis. The study examines differences between experienced and novice clinicians on a clinical diagnostic task. 10 novice psychology graduate students and 9 experienced psychologists read two case histories, each divided into a series of clinical vignettes. Subjects were asked to "think aloud" about the case formulation and later asked to recall of information about the case. Recorded protocols were transcribed and coded according to frequencies of diagnostic hypotheses, symptom hypotheses, speculative ideas, case references, and case features. …

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The Mechanical Response Of Cross-Ply Ceramic Matrix Composites, Donald Erdman Dec 1995

The Mechanical Response Of Cross-Ply Ceramic Matrix Composites, Donald Erdman

Doctoral Dissertations

This work concerns the development of an analytic model to predict the stress-strain and damage behavior of ceramic matrix cross-ply laminates. The validity of the model is to be assessed by experimental observations. Major features of the analysis include : prediction of transverse matrix cracking in the 90° plies at each increment of applied stress utilizing a fracture criterion to determine the increase in crack density, prediction of interfacial slip zones between the 0° and 90° ply groups, and a bilinear constitutive formulation to account for the non-linear behavior of the 0° ply groups within the cross-ply composite. This work …

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Validation Of The Articulated Total Body Model Data Set Describing The Large Advanced Dynamic Anthropomorphic Manikin, Joel J. Hagan Dec 1995

Validation Of The Articulated Total Body Model Data Set Describing The Large Advanced Dynamic Anthropomorphic Manikin, Joel J. Hagan

Theses and Dissertations

Recent cut-backs in Department of Defense spending have presented a need to augment full-scale ejection seat testing with computer simulation. To this end, the U.S. Air Force's Armstrong Laboratory has developed a data set describing the Advanced Dynamic Anthropomorphic Manikin (ADAM) for use in conjunction with the Articulated Total Body (ATB) model for the purpose of simulating the dynamics of the ADAM during sled track ejections. The purpose of this thesis is to validate the ADAM data set by graphically comparing ADAM joint angular displacements calculated by the ATB model with those measured during ejection seat sled track tests. The …

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Photoluminescence And Electroluminescence Of Erbium And Neodymium Implanted Semiconductors, James R. Hunter Dec 1995

Photoluminescence And Electroluminescence Of Erbium And Neodymium Implanted Semiconductors, James R. Hunter

Theses and Dissertations

Low temperature photoluminescence (PL) and electroluminescence (EL) measurements were used to study the excitation of erbium- and neodymium-implanted GaAs and AlxGa1-xAs (x=0. 1, 0.3) pn-junctions. The rare-earth (RE) emissions were investigated as a function of ion dose, aluminum mole fraction, laser excitation power, and applied forward bias voltage for the implanted samples. Low temperature PL was also measured from Er doped silicon grown by the metalorganic chemical vapor-phase deposition (MOCVD) method using various growth parameters.. The MOCVD-grown Si samples were studied as a function of metalorganic source temperature, silane (SiH4) flow, growth time, and …

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Application Of A Gaussian Plume Model To Groundwater Contaminant Transport, Larry S. Blackwelder Dec 1995

Application Of A Gaussian Plume Model To Groundwater Contaminant Transport, Larry S. Blackwelder

Doctoral Dissertations

The Gaussian plume model is based on the assumptions that (1) the contaminant concentration profile in a porous medium can be represented by a Gaussian distribution and (2) that the contaminant plume can be modeled by a combination of discrete releases from a point source. The basic three-dimensional Gaussian equation is modified to reflect the transport processes encountered in groundwater contaminant transport, such as retardation and decay. The major advantages of the Gaussian plume model are demonstrated when modeling sources that are not point sources (line, area, or volume sources) or are not instantaneous (steady state or continuous). For the …

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Personal Stories And Narrative Abilities Of Mainstream Six-Year-Old Children, Frieda Kalb Davis Dec 1995

Personal Stories And Narrative Abilities Of Mainstream Six-Year-Old Children, Frieda Kalb Davis

Doctoral Dissertations

This study was undertaken in an effort to learn what the favorite personal stories and narrative abilities are among a small group of mainstream, six-year-old children. Previous research has not singled out this group in order to explore the range of story patterns and narrative abilities they possess. The study also addresses a lack of naturally gathered data on the topics, themes, and affective stances of the stories children like to tell about themselves. Twelve participants met with me in their homes for to data gathering, open-ended interviews. Transcripts of the stories were qualitatively analyzed and compared to an oral …

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"Blessings Left Behind" : Self And Social Obligation In The Novels Of Elizabeth Gaskell, Eileen D. Abel Dec 1995

"Blessings Left Behind" : Self And Social Obligation In The Novels Of Elizabeth Gaskell, Eileen D. Abel

Doctoral Dissertations

Far from supporting the domestic ideology of the Nineteenth Century as many writers contend, Elizabeth Gaskell's five major novels–Mary Barton, Ruth, North and South, Sylvia's Lovers and Wives and Daughters--reflect her overriding idea that the individual could effect social change only through the achievement of moral integrity. Gaskell believes that the primary responsibility of an adult participant of community life is moral awareness, and in these five novels Gaskell creates a sort of moral mythology, or stories by which women could guide their lives. Gaskell's heroines influence their specific communities by learning the supposed "feminine" virtues of love, mercy and …

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Extraction Of Uranium By Dibutyl Carbitol In The System Uoℓ(Noℓ)ℓ-Hnoℓ-Hℓo-Ca(Noℓ)ℓ-Dbc, Joseph F. Birdwell Dec 1995

Extraction Of Uranium By Dibutyl Carbitol In The System Uoℓ(Noℓ)ℓ-Hnoℓ-Hℓo-Ca(Noℓ)ℓ-Dbc, Joseph F. Birdwell

Doctoral Dissertations

Multiple experiments have been performed to evaluate aspects of uranium extraction by dibutyl carbitol (DEC) in the system UO2(NO3)2-HNO3-H2O-Ca(NO3)2-DBC. Equilibrium distribution of the uranium solute between the aqueous and organic phases has been evaluated. Transfer rate tests have been performed to determine the effect of physical parameters on the rate of transfer. Evaluation of physical parameter correlations with transfer rate has been used to determine the controlling resistance to transfer: reaction kinetics, diffusion, or a combination of the two. Transfer tests have also been performed in …

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"What A Bloody Family" : Power, Gender, And Sexuality In Contemporary British Drama, William C. Boles Dec 1995

"What A Bloody Family" : Power, Gender, And Sexuality In Contemporary British Drama, William C. Boles

Doctoral Dissertations

Since the conclusion of World War II, the traditional Victorian idealization of the British family as an extended, heterosexual, patriarchal institution has been challenged through governmental policies, post-war economic affluence, and social changes. Through the plays of Harold Pinter, Peter Nichols, Caryl Churchill, Stephen Poliakoff and Sarah Daniels, among others, the contemporary British theatre has reflected these challenges to the image of the British family. Building upon socio-historical studies of the post-war British family as well as traditional dramatizations of the family (by playwrights such as Noel Coward), this dissertation discusses the changing presentation of the British family between 1956 …

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Phase Contrast Transmission Electron Microscopy Using Phase Plates, John Henry Blackson Dec 1995

Phase Contrast Transmission Electron Microscopy Using Phase Plates, John Henry Blackson

Doctoral Dissertations

Transmission electron microscopy of weakly scattering materials like thin sections of cells and polymers often leads to poor image contrast and poor transfer of information with a spatial frequency lower than around 2 nm. In addition, the information contained in the phase of the specimen exit wave is often lost due to an inability to directly record phase changes. Electron Holography, which is difficult and expensive to practice has proven ineffective at significantly improving image contrast in many cases. Another method for generating phase contrast involves the use of phase plates that until now were not practical for routine transmission …

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Formation Of N-Chloramine : Silver Ion Complexes, Isolation Of A Stable Nitrenium Ion And The Silver Ion-Induced Rearrangement Of N-Chlorocyclobutylamines, Edward L. Brown Dec 1995

Formation Of N-Chloramine : Silver Ion Complexes, Isolation Of A Stable Nitrenium Ion And The Silver Ion-Induced Rearrangement Of N-Chlorocyclobutylamines, Edward L. Brown

Doctoral Dissertations

Several secondary N-chloramines were characterized by both proton and carbon NMR revealing predictable chemical shift effects. The addition of silver ion to some of these N-chloramines produced N-chloramine: silver ion complexes that were studied using proton NMR. From this NMR study, it is clear that the site of silver complexation in these compounds occurs predominately at the nitrogen unshared electrons. Precipitation of silver chloride from one of these complexes left behind a crystalline material that was stable at ambient temperature to atmospheric moisture and air. Subsequent characterization by X-ray crystallography revealed a central nitrogen with two sigma bonds and a …

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I.R.C. Section 482: Transfer Pricing 1994 Final Regulations, Heather Fish Dec 1995

I.R.C. Section 482: Transfer Pricing 1994 Final Regulations, Heather Fish

Honors Theses

No abstract provided.

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Evaluation Of The Air Force Installation Restoration Advisory System, Dale M. Fox Dec 1995

Evaluation Of The Air Force Installation Restoration Advisory System, Dale M. Fox

Theses and Dissertations

This research is intended to evaluate the Air Force's Installation Restoration Advisory System Workstation software and documentation. Groundwater modeling is the biggest aid to Air Force Installation Restoration decision makers in making their conclusions about what to do with their hazardous waste sites where the groundwater is contaminated. The Advisory System aids the user in determining if a site poses a potential problem, and if so assists the user in selecting an appropriate groundwater transport model. The decision of what type of model is most suitable is based upon the user's conceptual site model and the decision is made by …

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A Differential Gps Aided Ins For Aircraft Landings, Ryan L. Britton Dec 1995

A Differential Gps Aided Ins For Aircraft Landings, Ryan L. Britton

Theses and Dissertations

The Department of Defense (DOD) and the commercial airline industry are in the process of replacing the instrument landing system (ILS) for aircraft precision approach landings. The use of differential Global Positioning System (DGPS) is thought to be a viable replacement for ILS precision approaches. This thesis explores the integration of an INS, DGPS, Barometric Altimeter, Pseudolite, and Radar Altimeter for a tanker type and a single engine aircraft precision approach. These devices are integrated using an extended Kalman filter (EKF). For the tanker type aircraft federal Aviation Administration (FAA) requirements for a Category I and a Category II precision …

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Effects Of Jamming And Excision Filtering Upon Error Rates And Detectability Of A Spread Spectrum Communication System, Christopher B. Madden Dec 1995

Effects Of Jamming And Excision Filtering Upon Error Rates And Detectability Of A Spread Spectrum Communication System, Christopher B. Madden

Theses and Dissertations

This thesis examines the effects of a digital excision filter (DEF) upon the error rates and detectability of a Direct Sequence Binary Phase Shift Keyed communication signal in the presence of both continuous wave (CW) and pulsed jammers. Simulations were performed using the Comdisco Signal Processing Worksystem. Detector models used were the wideband radiometer and two forms of the chip-rate detector. Twelve jamming scenarios were used to test the performance of the DEF in the presence of the CW and pulsed jammers. In addition, the effects of the CW jammer frequency, the pulsed jammer duty cycle, and the pulsed jammer …

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A Neural Network Approach To The Prediction And Confidence Assignation Of Nonlinear Time Series Classifications, Erin S. Heim Dec 1995

A Neural Network Approach To The Prediction And Confidence Assignation Of Nonlinear Time Series Classifications, Erin S. Heim

Theses and Dissertations

This thesis uses multiple layer perceptrons (MLP) neural networks and Kohonen clustering networks to predict and assign confidence to nonlinear time series classifications. The nonlinear time series used for analysis is the Standard and Poor's 100 (S&P 100) index. The target prediction is classification of the daily index change. Financial indicators were evaluated to determine the most useful combination of features for input into the networks. After evaluation it was determined that net changes in the index over time and three short-term indicators result in better accuracy. A back-propagation trained MLP neural network was then trained with these features to …

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