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An Investigation to Determine Improvement in the Social Status of Children Through Concetrated Effort
The problem of this study is an investigation of the development of social adjustment in thirty-three first-grade pupils in Gainesville, Texas, during 1949-1950. The purpose of the study is to determine each child's total readiness status at the beginning of the investigation, surround each with socializing experiences appropriate to his need, and then determine whether measurable benefits appear to result from his participation in the specific activities designed for social development. digital.library.unt.edu/ark:/67531/metadc96877/
Investigations in the Mechanism of Carbothermal Reduction of Yttria Stabilized Zirconia for Ultra-high Temperature Ceramics Application and Its Influence on Yttria Contained in It
Zirconium carbide (ZrC) is a high modulus ceramic with an ultra-high melting temperature and, consequently, is capable of withstanding extreme environments. Carbon-carbon composites (CCCs) are important structural materials in future hypersonic aircraft; however, these materials may be susceptible to degradation when exposed to elevated temperatures during extreme velocities. At speeds of exceeding Mach 5, intense heating of leading edges of the aircraft triggers rapid oxidation of carbon in CCCs resulting in degradation of the structure and probable failure. Environmental/thermal barrier coatings (EBC/TBC) are employed to protect airfoil structures from extreme conditions. Yttria stabilized zirconia (YSZ) is a well-known EBC/TBC material currently used to protect metallic turbine blades and other aerospace structures. In this work, 3 mol% YSZ has been studied as a potential EBC/TBC on CCCs. However, YSZ is an oxygen conductor and may not sufficiently slow the oxidation of the underlying CCC. Under appropriate conditions, ZrC can form at the interface between CCC and YSZ. Because ZrC is a poor oxygen ion conductor in addition to its stability at high temperatures, it can reduce the oxygen transport to the CCC and thus increase the service lifetime of the structure. This dissertation investigates the thermodynamics and kinetics of the YSZ/ZrC/CCC system and the resulting structural changes across multiple size scales. A series of experiments were conducted to understand the mechanisms and species involved in the carbothermal reduction of ZrO2 to form ZrC. 3 mol% YSZ and graphite powders were uniaxially pressed into pellets and reacted in a graphite (C) furnace. Rietveld x-ray diffraction phase quantification determined that greater fractions of ZrC were formed when carbon was the majority mobile species. These results were validated by modeling the process thermochemically and were confirmed with additional experiments. Measurements were conducted to examine the effect of carbothermal reduction on the bond lengths in YSZ and ZrC. Subsequent extended x-ray absorption fine structure (EXAFS) measurements and calculations showed Zr-O, Zr-C and Zr-Zr bond lengths to be unchanged after carbothermal reduction. Energy dispersive spectroscopy (EDS) line scan and mapping were carried out on carbothermaly reduced 3 mol% YSZ and 10 mol% YSZ powders. Results revealed Y2O3 stabilizer forming agglomerates with a very low solubility in ZrC. digital.library.unt.edu/ark:/67531/metadc500159/
Investigations of neuronal network responses to electrical stimulation in murine spinal cultures.
Spontaneous activity in neuronal networks in vitro is common and has been well documented. However, alteration of spontaneous activity in such networks via conditioning electrical stimulation has received much less experimental attention. Two different patterns of electrical stimulation were used to enhance or depress the level of spontaneous activity in spinal cord cultures. High-frequency stimulation (HFS), a method routinely shown to increase the efficacy of synaptic transmission, was employed to augment spontaneous activity. Low-frequency stimulation (LFS), the technique often applied to depress synaptic efficacy, was employed to decrease spontaneous activity. In addition, LFS was used to reverse the effect of HFS on spontaneous activity. Likewise, HFS was applied to counter the effect of LFS. Because these networks were grown on multi-microelectrode plates (MMEPs), this allowed the simultaneous stimulation of any combination of the 64 electrodes in the array. Thus, the possible differences in response to single versus multi-electrode stimulation were also addressed. Finally, test-pulses were delivered before and after the conditioning stimulation on the same stimulation electrode(s) in order to assess the change in mean evoked action potentials (MEAPs). Dissociated spinal tissue from embryonic mice was allowed to mature into self-organized networks that exhibited spontaneous bursting activity after two weeks of incubation. Spontaneous activity was monitored from up to 14 recording channels simultaneously. Although uniform responses to stimulation across all recording electrodes were rarely observed, a large majority of the recording channels had similar responses. Spontaneous activity was increased in 52% of 89 HFS trials, whereas activity was decreased in 35% of 75 LFS trials. The duration of most of these increases was less than 5 minutes. When there were substantial and long-term (> 15 min) changes in spontaneous activity, the opposing stimulation pattern successfully reversed the effect of the previous stimulation. The percent change in MEAPs following conditioning stimulation suggested that synaptic modification had taken place in 75% of all test-pulse stimulation trials. digital.library.unt.edu/ark:/67531/metadc3027/
Investigations of Thermochemistry and the Kinetics of H Atom Radical Reactions
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The thermochemistry of several species, and the kinetics of various H atom radical reactions relevant to atmospheric and combustion chemistry were investigated using ab initio theoretical techniques and the flash photolysis / resonance fluorescence technique. Using ab initio quantum mechanical calculations up to the G3 level of theory, the C-H bond strengths of several alkanes were calculated. The bond strengths were calculated using two working reactions. From the results, it is apparent that the bond strengths decrease as methyl groups are added to the central carbon. The results are in good agreement with recent experimental halogenation kinetic studies. Hydrogen bond strengths with sulfur and oxygen were studied via CCSD(T) theory, together with extrapolation to the complete basis set limit. The results for the bond dissociation energies (ground state at 0 K, units: kJ mol-1) are: S-H = 349.9, S-D = 354.7, HS-H = 376.2, DS-D = 383.4, and HO-H = 492.6. These data compare well with experimental literature. The rate constants for the isotopic reactions of H + H2S, D + H2S, H + D2S, and D + D2S are studied at the QCISD(T)/6-311+G(3df,2p) level of theory. The contributions of the exchange reaction versus abstraction are examined through transition state theory. The energy of NS was computed via CCSD(T) theory, together with extrapolation to the complete basis set limit. The results were employed with three working reactions to find ΔfH0(NS) = 277.3 ± 2 kJ mol-1 and ΔfH298(NS) = 278.0 ± 2 kJ mol-1. This thermochemistry is consistent with, but much more precise than, earlier literature values. A kinetic study of the reaction of H + CH2CCl2 was conducted over the temperature range of 298 - 680 K. The reaction was found to be pressure dependent and results of the rate constants and their interpretation via unimolecular rate theory are presented. digital.library.unt.edu/ark:/67531/metadc3275/
Investing and Hedging Techniques in the Convertible Bond Market
This study was designed to yield three types of information: (1) The degree of perfection prevailing in the parimary and secondary convertible bond markets; (2) the profit potential of various investing and hedging techniques in the convertible bond market; and (3) a judgment on whether each technique can be classified as rational or irrational. digital.library.unt.edu/ark:/67531/metadc164333/
Investment and Growth from Climate Action A Briefing by CDP to Support the EU 2030 Climate and Energy Package
CDP has created this briefing confident that it will provide a useful further contribution to these policy debates.The briefing is launched alongside its global report ‘The A List: The CDP Climate Performance Leadership Index 2014’. CDP’s Climate Performance Leadership Index (CPLI) is an index highlighting companies that exhibit leadership through their actions to mitigate climate change. digital.library.unt.edu/ark:/67531/metadc501462/
Investment decisions: Influence of an Internet stock message board.
The Internet provides many sources of financial information that investors can use to help with investment decisions and in interpreting companies' accounting information. One source of information is Internet stock message boards such as those at Yahoo! Finance. This source allows for anonymous postings and information exchange. Despite the possibility of the information being incorrect many individuals visit these message boards. The purpose of this study is to investigate Internet stock message boards and address the primary question: From an individual investor perspective, do message boards, which contain accounting information, influence investment decisions? The question is addressed using psychology rumor literature and attitude theories. Message board postings are a type of rumor, since not all the information is verified and is usually intended to persuade a belief or influence a decision. Further, the messages may influence an investor by causing a change in attitude about the investment. Using an experiment, message board influence on an investment decision and attitude was tested. The results indicated that individuals that received negative message board postings did have a significantly higher change in investment amount as compared to a control group that did not receive any message postings. The positive message board group and the control group were not significantly different in their amount of investment change. The results of the study also show that message board postings influenced attitude, those that received negative (positive) postings had a negative (positive) attitude about the investment. It was further found that those with a negative (positive) attitude decreased (increased) their investment. Finally, contrary to expectations, investment experience did not lead to an individual being less influenced by message board postings. This study contributes to the accounting literature by investigating an additional source of Internet financial reporting that may or may not contain correct information. The SEC is concerned over the manipulative opportunities that are available within these message boards and many investors are exploring these new sources of information instead of relying on traditional accounting information. This study finds that negative postings have an influence on investment decision and possibly should be investigated as manipulative techniques. digital.library.unt.edu/ark:/67531/metadc5130/
The Invisible Dragon
This collection of memoir essays chronicles the author's 19 year struggle with chronic depression. "The Invisible Dragon" explores the onset of the disease and its cure. "The Silent Typewriter" looks at how it affected the author as a writer. "Roses for Trish" discusses how it affected his wife. "My Mother's Son" explores the possibility that he inherited depression from his mother. The final essay, "The Dragon Returns" probes the author's life in 2012 with the probability that he has a personality disorder. The preface examines several depression memoirs and explores the strategies used by William Styron, Elizabeth Wurtzel and Kay Redfield Jamison to prevent sliding into the pitfalls inherent in a linear structure. Among these are the use of alternative structures, language, characterization, focus and imagery. digital.library.unt.edu/ark:/67531/metadc177182/
Involvement in Admission to Two Homes for the Aged
The study reported in the thesis attempted to examine the decision-making process for the institutionalization of older people in homes for the aged. More specifically, it sought to determine who was responsible for the decisions, to discover if this responsibility was related to selected social factors, and to ascertain if it affected the adjustment of older people to the institutional setting. digital.library.unt.edu/ark:/67531/metadc108231/
Ion Beam Synthesis of Carbon Assisted Nanosystems in Silicon Based Substrates
The systematic study of the formation of β-SiC formed by low energy carbon ion (C-)implantation into Si followed by high temperature annealing is presented. The research is performed to explore the optimal annealing conditions. The formation of crystalline β-SiC is clearly observed in the sample annealed at 1100 °C for a period of 1 hr. Quantitative analysis is performed in the formation of β-SiC by the process of implantation of different carbon ion fluences of 1×1017, 2×1017, 5×1017, and 8×1017 atoms /cm2 at an ion energy of 65 keV into Si. It is observed that the average size of β-SiC crystals decreased and the amount of β-SiC crystals increased with the increase in the implanted fluences when the samples were annealed at 1100°C for 1 hr. However, it is observed that the amount of β-SiC linearly increased with the implanted fluences up to 5×1017 atoms /cm2. Above this fluence the amount of β-SiC appears to saturate. The stability of graphitic C-C bonds at 1100°C limits the growth of SiC precipitates in the sample implanted at a fluence of 8×1017 atoms /cm2 which results in the saturation behavior of SiC formation in the present study. Secondly, the carbon cluster formation process in silica and the characterization of formed clusters is presented. Silicon dioxide layers ~500 nm thick are thermally grown on a Si (100) wafer. The SiO2 layers are then implanted with 70 keV carbon ions at a fluence of 5×1017 atoms/cm2. The implanted samples are annealed 1100 °C for different time periods of 10 min., 30 min., 60 min., 90 min., and 120 min., in the mixture of argon and hydrogen gas (96 % Ar + 4% hydrogen). Photoluminescence spectroscopy reveals UV to visible emission from the samples. A detail mechanism of the photoluminescence and its possible origin is discussed by correlating the structural and optical properties of the samples. Raman spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, spectroscopy, photoluminescence spectroscopy, and transmission electron microscopy are used to characterize the samples. digital.library.unt.edu/ark:/67531/metadc68033/
Ion-Induced Damage In Si: A Fundamental Study of Basic Mechanisms over a Wide Range of Implantation Conditions
A new understanding of the damage formation mechanisms in Si is developed and investigated over an extended range of ion energy, dose, and irradiation temperature. A simple model for dealing with ion-induced damage is proposed, which is shown to be applicable over the range of implantation conditions. In particular the concept of defect "excesses" will be discussed. An excess exists in the lattice when there is a local surplus of one particular type of defect, such as an interstitial, over its complimentary defect (i.e., a vacancy). Mechanisms for producing such excesses by implantation will be discussed. The basis of this model specifies that accumulation of stable lattice damage during implantation depends upon the excess defects and not the total number of defects. The excess defect model is validated by fundamental damage studies involving ion implantation over a range of conditions. Confirmation of the model is provided by comparing damage profiles after implantation with computer simulation results. It will be shown that transport of ions in matter (TRIM) can be used effectively to model the ion-induced damage profile, i.e. excess defect distributions, by a simple subtraction process in which the spatially correlated defects are removed, thereby simulating recombination. Classic defect studies illuminate defect interactions from concomitant implantation of high- and medium-energy Si+-self ions. Also, the predictive quality of the excess defect model was tested by applying the model to develop several experiments to engineer excess defect concentrations to substantially change the nature and distribution of the defects. Not only are the excess defects shown to play a dominant role in defect-related processing issues, but their manipulation is demonstrated to be a powerful tool in tailoring the implantation process to achieve design goals. Pre-amorphization and dual implantation of different energetic ions are two primary investigative tools used in this work. Various analyses, including XTEM, RBS/channeling, PAS, and SIMS, provided experimental verification of the excess defect model disseminated within this dissertation. digital.library.unt.edu/ark:/67531/metadc5248/
IPCC Expert Meeting on Emission Scenarios
This report summarizes the Expert Meeting on Emission Scenarios to help inform the fourth Assessment Report of the IPCC. digital.library.unt.edu/ark:/67531/metadc29384/
IPCC Expert Meeting On Industrial Technology Development, Transfer And Diffusion
This meeting summary report presents the major findings and discussion from the IPCC Expert Meeting on "Industrial Technology Development, Transfer and Diffusion." digital.library.unt.edu/ark:/67531/metadc29369/
IPCC Expert Meeting on the Science of Alternative Metrics: Meeting Report
This extended report of the IPCC Expert Meeting on the Science of Alternative Metrics that was held in Oslo 18-20 March 2009 is provided in response to an invitation from the UN Framework Convention on Climate Change Ad Hoc Working Group on Further Commitments for Annex I Parties under Kyoto Protocol (UNFCCC AWG-KP) to the Intergovernmental Panel on Climate Change (IPCC) to undertake further technical assessment of alternative common metrics which are used to calculate the CO2 equivalence of anthropogenic emissions by sources, and removals by sinks, of greenhouse gases listed in Annex A to the Kyoto Protocol. The outcome of the expert meeting was an agreed set of key conclusions and recommendations to UNFCCC in response to the request of the AWG-KP as well as more specific recommendations to the scientific community regarding research needs and ones relevant to the scoping of the IPCC's Fifth Assessment Report (AR5). These were presented to the IPCC Plenary in a short report at its 30th session in Antalya, 21-23 April 2009. The current full report of the expert meeting amplifies those conclusions and recommendations and includes the extended abstracts of the meeting presentations as well as a general bibliography. digital.library.unt.edu/ark:/67531/metadc11872/
IPCC Expert Meeting on The Science to Address UNFCCC Article 2 including Key Vulnerabilities
This report contains supporting material to examine the science relating to stabilizing greenhouse gas concentrations at a level that would prevent dangerous anthropogenic interference. The report was prepared for consideration by the IPCC, but it has not been subjected to formal IPCC review processes. digital.library.unt.edu/ark:/67531/metadc29352/
IPCC Special Report Aviation and the Global Atmosphere: Summary for Policymakers
The Intergovernmental Panel on Climate Change (IPCC) was jointly established by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) in 1988 to: (i) assess available information on the science, the impacts, and the economics of, and the options for mitigating and/or adapting to, climate change and (ii) provide, on request, scientific/technical/socio-economic advice to the Conference of the Parties (COP) to the United Nations Framework Convention on Climate Change (UNFCCC). Since then the IPCC has produced a series of Assessment Reports, Special Reports, Technical Papers, methodologies, and other products that have become standard works of reference, widely used by policymakers, scientists, and other experts. This Special Report was prepared following a request from the International Civil Aviation Organization (ICAO) and the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer. The state of understanding of the relevant science of the atmosphere, aviation technology, and socio-economic issues associated with mitigation options is assessed and reported for both subsonic and supersonic fleets. The potential effects that aviation has had in the past and may have in the future on both stratospheric ozone depletion and global climate change are covered; environmental impacts of aviation at the local scale, however, are not addressed. The report synthesizes the findings to identify and characterize options for mitigating future impacts. digital.library.unt.edu/ark:/67531/metadc11951/
IPCC Technical Guidelines for Assessing Climate Change Impacts and Adaptations
This guideline provides a means for assessing the impacts of potential climate change and of evaluating appropriate adaptations. digital.library.unt.edu/ark:/67531/metadc11970/
IPCC Working Group I Workshop on Climate Sensitivity Workshop Report
This workshop report is a contribution by the IPCC Working Group I for the preparation of the IPCC 4th Assessment Report. The workshop evaluated a range of climate model results in order to improve understanding of climate sensitivity estimates and objectively determine criteria for evaluating results from different climate models. digital.library.unt.edu/ark:/67531/metadc29368/
IPCC Workshop on Describing Scientific Uncertainties in Climate Change to Support Analysis of Risk and of Options
This report summarizes an IPCC workshop which was convened to discuss how to communicate areas of risk and uncertainty in the 4th IPCC Assessment Report. digital.library.unt.edu/ark:/67531/metadc29366/
Iranian Access Television of Dallas: Cultural Issues, Preservation, and Community Formation
This study focused on the televisual and cultural practices of Iranians via public access television in Dallas, Texas. It includes analysis of format and content. It combines demographic, structural, and statistical information with a culturalist and interpretive viewpoint in examining the efforts of Iranians, via access television programs, in preserving their culture and the formation of a coherent and active community in the Dallas/Fort Worth Metroplex. digital.library.unt.edu/ark:/67531/metadc278997/
Iron and Copper Metabolism of Young College Women on Self-Selected Diets
The object of this study is to determine the copper and iron intake in food and the output in the urine and feces of women students living in the Home Management House eating a self-selected diet. digital.library.unt.edu/ark:/67531/metadc75614/
Iron Sharpens Iron: Duets for Two Women in the Teaching/instruction of Undergraduate Women
Duet literature remains largely untapped as a pedagogical tool in the undergraduate voice studio. This dissertation examines the ways in which eight duets for female voices, although not written primarily for pedagogical use, may be used to teach four main areas of voice technique: intonation, vocal agility, legato singing, and dramatic skills. Duets are chosen primarily from the standard repertoire and are in English, German, French, Italian and Latin. The compositional styles range from the Baroque period through the 20th century. Genres include art song, oratorio, and opera. Each chapter focuses on one of the four vocal skills listed above, and includes examinations of two duets whose vocal writing (rhythm, tessitura, intervals, tempi, and text) make them appropriate candidates for pedagogical use in the improvement of that specific skill. Both male and female teachers of singing may utilize this project as a practical resource and model in how to use other duets, including those for other voice types, for similar purposes in their teaching studio. This project also demonstrates how the experience of singing duets helps students develop ensemble singing as they listen and respond to each other. Finally, this project offers voice teachers an additional pedagogical tool to help each student improve select skills, resulting in a more confident performer. digital.library.unt.edu/ark:/67531/metadc500124/
Irony, Humor, and Ontological Relationality in Literature
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The purpose of this dissertation is to investigate ontological relationality in literary theory and criticism by critically reflecting on modern theories of literature and by practically examining the literary texts of Geoffrey Chaucer, William Shakespeare, and Oscar Wilde. Traditional studies of literary texts have been oriented toward interpretative or hermeneutic methodologies, focusing on an independent and individual subject in literature. Instead, I explore how relational ontology uncovers the interactive structures interposed between the author, the text, and the audience by examining the system of how the author's creative positioning provokes the reader's reaction through the text. In Chapter I, I critically inquire into modern literary theories of "irony" in Romanticism, New Criticism, and Deconstructionism to show how they tend to disregard the dynamic dimension of interactive relationships between different literary subjects. Chapter II scrutinizes Wilde's humor in An Ideal Husband (1895) and The Importance of Being Earnest (1895) in order to reveal the ontological relationships triggered by a creative positioning. In chapter III, I examine Chaucer's The Canterbury Tales (c. 1400) and the laughter in "The Miller's Tale" in particular, to examine the ethical and aesthetic dimensions of its interactive relationships. In Chapter IV, I explore Much Ado About Nothing (1598-99), Othello (1603-4), and The Winter's Tale (1609-11) so as to show how artistic positioning creatively constructs a relational system of dynamic interactions to circulate social ideals and values. In so doing, this dissertation is aimed at revealing the aesthetic values of literature and the objective scope of literary discourse rather than providing yet another analytical paradigm dependent primarily on a single literary subject. Thus, the ontological study is proposed as an alternative, yet primary, dimension of literary criticism and theoretical practice. digital.library.unt.edu/ark:/67531/metadc149621/
Is It More Advantageous to Administer Libqual+® Lite Over Libqual+®? an Analysis of Confidence Intervals, Root Mean Square Errors, and Bias
The Association of Research Libraries (ARL) provides an option for librarians to administer a combination of LibQUAL+® and LibQUAL+® Lite to measure users' perceptions of library service quality. LibQUAL+® Lite is a shorter version of LibQUAL+® that uses planned missing data in its design. The present study investigates the loss of information in commonly administered proportions of LibQUAL+® and LibQUAL+® Lite when compared to administering LibQUAL+® alone. Data from previous administrations of LibQUAL+® protocol (2005, N = 525; 2007, N = 3,261; and 2009, N = 2,103) were used to create simulated datasets representing various proportions of LibQUAL+® versus LibQUAL+® Lite administration (0.2:0.8, 0.4:0.6. 0.5:0.5, 0.6:0.4, and 0.8:0.2). Statistics (i.e., means, adequacy and superiority gaps, standard deviations, Pearson product-moment correlation coefficients, and polychoric correlation coefficients) from simulated and real data were compared. Confidence intervals captured the original values. Root mean square errors and absolute and relative biases of correlations showed that accuracy in the estimates decreased with increase in percentage of planned missing data. The recommendation is to avoid using combinations with more than 20% planned missing data. digital.library.unt.edu/ark:/67531/metadc283825/
Is It Really That Bad? Verifying the extent of full-text linking problems
This presentation is for a workshop and discusses a methodology for addressing full-text linking problems. digital.library.unt.edu/ark:/67531/metadc102282/
Is Mattering what Matters: A Validation Study of the Meta-Valuing Measure of Flexible Valuing
Freely choosing a life direction, or flexible valuing, is a core component of acceptance and commitment therapy (ACT). Initial research suggests that valuing behavior may contribute to psychological well-being, but has been stymied by a lack of an efficient measure. The current study examined the psychometric characteristics of a new measure of flexible valuing, the Meta-Valuing Measure (MVM), in a sample of 532 undergraduates. Exploratory factors analysis revealed 3 orthogonal factors, Valuing (α = .94), Freedom from Values Conflict (α = .92), and Flexibility in Valuing (α = .73). The majority of expected relationships with other constructs were significant including those with measures of values, mindfulness, quality of life, experiential avoidance, and psychological distress. digital.library.unt.edu/ark:/67531/metadc30517/
IS-MBNQA: A new framework for the relationship between Information Systems and organizational quality.
Despite numerous frameworks and models proposed in the literature, Information Systems (IS) assessment still remains elusive. In addition, little agreement exists on the contribution of the IS function within an organization and on how IS is related to the other organizational dimensions. Frameworks that show the relationship between IS and the organization are in the developmental stage and this work proposes a more comprehensive framework to assist in better understanding the relationship between IS and organizational quality. This research examines two popular IS quality assessment frameworks - Malcolm Baldrige National Quality Award (MBNQA) and Information Systems Assessment (ISA) - and suggests a new framework, IS-MBNQA. This work integrates these two IS quality assessment frameworks into a single comprehensive model that provides a holistic view on how IS quality is interrelated to organizational quality. The existing two IS assessment frameworks attempted to measure IS quality at different levels within an organization. The MBNQA model is the most comprehensive quality framework because it takes an organization wide perspective. On the other hand, ISA employs an IS specific perspective and reflects the relationships of eight major IS success dimensions. ISA is a modified version of DeLone & McLean's model with the inclusion of a success factor for Service Quality. For this study, survey instruments are developed from the MBNQA and ISA frameworks and they are consolidated to allow testing of the single IS-MBNQA framework. Exploratory factor analysis is performed for instrument refinement and confirmatory factor analysis for validity of the models. The instruments developed in this work are utilized as a foundation for identifying the relationships among the dimensions within and between each model. A major contribution of this work is the validation of the 2000 MBNQA model and the extension of existing models/frameworks to better explain the IS contribution to an organization. digital.library.unt.edu/ark:/67531/metadc3060/
Is Mind Wandering the Mechanism Responsible for Life Stress Induced Impairments in Working Memory Capacity?
The relationship between life stress and working memory capacity (WMC) has been documented in college students and older adults. It has been proposed that intrusive thoughts about life stress are the mechanism responsible for the impairments seen in WMC. To examine the mechanism responsible for these impairments the current study attempted to induce intrusive thoughts about personal events. The current study allowed for a test of predictions made by two theories of mind wandering regarding the impact of these intrusive thoughts on WMC task performance. One hundred fifty undergraduates were assigned to a control group, positive event group, or negative event group. Participants in the positive and negative event groups completed a short emotional disclosure about an imagined future positive or negative event, respectively, to induce positive or negative intrusive thoughts. WMC measures were completed prior to and following the emotional writing. Results indicated a significant relationship between WMC and mind wandering, however the writing manipulation did not result in any consistent changes in intrusive thoughts or WMC. The results suggest a causal relationship between WMC and mind wandering. The emotional valence of the intrusive thought altered the impact on WMC. No relationship was seen between the measures of stress and WMC. The results of the current study suggest that negative intrusive thoughts result in impaired WMC task performance but other types of off-task thoughts may not result in similar impairments. digital.library.unt.edu/ark:/67531/metadc84169/
Is Mindfulness Just Another Ego Depletion Exercise?
Given increasing interest in the therapeutic benefits of mindfulness, limitations of its treatment utility are frequently questioned. As such, the purpose of the study was to examine the effects of mindfulness on a subsequent self-control task in a sample of college students. A total of 67 participants were randomly assigned to one of three conditions: a control condition, an experimental mindfulness-only condition or a comparison expectancy-plus-mindfulness condition to investigate the utility of mindfulness practice when motivated by an outcome of increased self-control. Results did not indicate a difference in persistence on a difficult task between conditions, regardless of the manipulation. Conceptual and experimental limitations of current study’s findings, as well as future directions, are discussed. digital.library.unt.edu/ark:/67531/metadc499980/
Is Qualitative Research Second Class Science? A Quantitative Longitudinal Examination of Qualitative Research in Medical Journals
Article discussing the proportion of qualitative research over a 10 year period and correlates associated with its publication. digital.library.unt.edu/ark:/67531/metadc181685/
"Is She Going to Die or Survive with Her Baby?": The Aftermath of Illegitimate Pregnancies in the Twentieth Century American Novels
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This dissertation is mainly based on the reading of three American novels to explore how female characters deal with their illegitimate pregnancies and how their solutions re-shape their futures and affect their inner growth. Chapter 1 discusses Dorinda Oakley's premarital pregnancy in Ellen Glasgow's Barren Ground and draws the circle of limits from Barbara Welter's "four cardinal virtues" (purity, submissiveness, domesticity, and piety) which connect to the analogous female roles (daughter, sister, wife, and mother). Dorinda's childless survival reconstructs a typical household from her domination and absence of maternity. Chapter 2 examines Ántonia Shimerda's struggles and endurance in My Ántonia by Willa Cather before and after Ántonia gives birth to a premarital daughter. Ántonia devotes herself to being a caring mother and to looking after a big family although her marriage is also friendship-centered. Chapter 3 adopts a different approach to analyze Charlotte Rittenmeyer's extramarital pregnancy in The Wild Palms by William Faulkner. As opposed to Dorinda and Ántonia who re-enter domesticity to survive, Charlotte runs out on her family and dies of a botched abortion. To help explain the aftermath of illicit pregnancies, I extend or shorten John Duvall's formula of female role mutations: "virgin>sexually active (called whore)>wife" to examine the riddles of female survival and demise. The overall argument suggests that one way or another, nature, society, and family are involved in illegitimately pregnant women's lives, and the more socially compliant a pregnant woman becomes after her transgression, the better chance she can survive with her baby. digital.library.unt.edu/ark:/67531/metadc5316/
Is the Road to Hell Paved with Good Intentions? The Effect of U.S. Foreign Assistance and Economic Policy on Human Rights
Theories in the international political economy literature, economic liberalism and dependency, are explored in order to test the effect of U.S. aid, trade, and investment on human rights conditions in recipient states. Two measures of human rights conditions serve as dependent variables: security rights and subsistence rights. The data cover approximately 140 countries from 1976-1996. Pooled cross-sectional time series analysis, utilizing ordinary least squares (OLS) with panel corrected standard errors, is employed due to the temporal and spatial characteristics of the data. The results indicate that foreign assistance and economic policy may not be the best approaches to altering poor human rights practices in the area of security rights. Economic and military aid is negatively associated with levels of security rights, supporting the traditional dependency perspective. While the results from trade and investment are generally in the positive direction, the lack of consistent statistical evidence suggests that increased trade and investment relationships do not dramatically improve security rights. We can conclude, however, that trade and investment fail to have the negative effect on security rights in less developed countries which critics of globalization suggest. Economic aid has a statistically significant negative effect on subsistence rights, while military aid seems to benefit the human condition in recipient states. However, extreme negative effects on security rights accompany any benefit realized in the area of subsistence rights from military aid. Trade and investment have a positive and statistically significant effect on basic human needs providing support for the liberal perspective. It appears that American businesses and politicians can forge ahead with seemingly self-interested motivations and economic policies as American economic gain ironically serves to benefit the well being of citizens in other states. However, in spite of political rhetoric and even sincere intentions regarding foreign assistance policy, it appears that the road to human rights hell is paved with good intentions. digital.library.unt.edu/ark:/67531/metadc2911/
Is There an Answer to the Current Lack of a Satisfying Philosophy Among the American People?
This study will seek to show that what appears to be the cause of a lack of a satisfying philosophy among the American people, as evidenced by restless, disintegrating behavior of individuals, is in reality the effect of such a lack. digital.library.unt.edu/ark:/67531/metadc75409/
Is There Justice in Mercy? the Retributive Philosophies of Executive Clemency
Executive clemency is assumed to be a mechanism to correct miscarriages of justice brought about by the criminal justice system, yet little empirical research exists to confirm this assumption. This research study examined the types of rationales cited in 799 cases of executive clemency from six states from 2005 to 2012. Rationales based upon retributive philosophies, in which a miscarriage of justice was cited, were further analyzed. This analysis revealed that only seven percent of all clemency decisions from the examined states cited retributive rationales. Of the fifty-six grants of clemency that cited retributive rationales, most were granted in the forms of pardons. The analysis indicated that executive clemency is utilized as a mechanism to correct injustices, specifically in cases of innocence. This study concludes with a discussion of policy implications and the reliance on executive clemency as a fail-safe to the criminal justice system. digital.library.unt.edu/ark:/67531/metadc271818/
Is video modeling enough to teach parent-child interactions? Toward a systematic evaluation of the key components of video modeling.
Parent-child interactions help set the foundation for a child's development. It is therefore important to investigate the relative efficiency and efficacy of procedures used to train them. One procedure that researchers continue to explore is video modeling. The current study evaluated the effect of a video model that displayed favorable parent-child interactions and a modified model with embedded instructions to determine if the introduction of either of these models would alter parent-child interactions. Both models were presented alone without supplemental guidance. Three families were involved in the study. The results showed no systematic change across families or conditions as a result of video viewing and are discussed within context of the needs of the parent, adequate stimulus control, community to support behavior change, measurement sensitivity, and influence of methodology. This study provided a great baseline for future studies to explore the necessary components to create an effective video model. digital.library.unt.edu/ark:/67531/metadc6040/
Isidore of Seville's Etymologies : the Complete English Translation of Isidori Hispalensis Episcopi Etymologiarum Sive Originum Libri XX
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This book contains St. Isidore's work translated from the Latin by Priscilla Throop with an index. Saint Isidore of Seville (c.560-636) was Archbishop of Seville for more than three decades and has the reputation of being one of the great scholars of the early Middle Ages. This translation is based on Wallace M. Lindsay’s edition of Isidori Hispalensis episcopi etymologiarum sive originum (Oxford, 1911). For his edition, Lindsay used all available 8th century manuscripts and fragments, as well as some from the 9th century. digital.library.unt.edu/ark:/67531/metadc276255/
The Isolated Individual in the Novels of Carson McCullers
The theme of isolation in some degree is drawn through every character in every novel by Carson McCullers. This thesis examines the works of McCullers and the ideas of loneliness and isolation in her works and in her life. digital.library.unt.edu/ark:/67531/metadc130641/
Isolation and analysis of cotton genomic clones encompassing a fatty acid desaturase (FAD2) gene
Polyunsaturated fatty acids are major structural components of plant chloroplast and endoplasmic reticulum membranes. Two fatty acid desaturases (designated FAD2 and FAD3) desaturate 75% of the fatty acids in the endoplasmic reticulum. The w -6 fatty acid desaturase (FAD2) may be responsible for cold acclimation response, since polyunsaturated phospholipids are important in helping maintain plant viability at lowered temperatures. To study regulation of FAD2 gene expression in cotton, a FAD2 gene was isolated from two genomic libraries using an Arabidopsis FAD2 hybridization probe and a cotton FAD2 5¢ -flanking region gene-specific probe, respectively. A cotton FAD2 gene was found to be in two overlapping genomic clones by physical mapping and DNA sequencing. The cloned DNA fragments are identical in size to cotton FAD2 genomic DNA fragments shown by genomic blot hybridization. The cotton FAD2 coding region has 1,155 bp with no introns and would encode a putative polypeptide of 384 amino acids. The cotton FAD2 enzyme has a high identity of 75% with other plant FAD2 enzymes. The enzyme has three histidine-rich motifs that are conserved in all plant membrane desaturases. These histidine boxes may be the iron-binding domains for reduction of oxygen during desaturation. To confirm that this FAD2 enzyme is functional, a plasmid construct containing the cotton FAD2 coding region was transformed into Saccharomyces cerevisiae. The transformed yeast cells were able to catalyze the conversion of oleic acid (C18:1) into linoleic acid (C18:2). The FAD2 gene contains an intron of 2,967 bp in its 5¢ -flanking region, 11 bp upstream from the initiation codon. The intron could be essential for transcriptional regulation of FAD2 gene expression. Several putative promoter elements occur in the 5¢ -flanking region of this gene. A potential TATA basal promoter element occurs at 41 bp upstream from the cap site. Two presumptive helix-loop-helix (bHLH) motifs that may be seed-specific promoter elements are located at 109 bp and 135 bp upstream from the potential cap site. digital.library.unt.edu/ark:/67531/metadc2796/
Isolation and Caritas: Polar Themes in Melville's The Confidence-Man
The thesis examines isolation and caritas, or charity, in The Confidence-Man as polar themes which express, respectively, withdrawal from and suspicion of the human community and integration within and appreciation for that community. Isolation is considered a negative theme; caritas, an affirmative theme. digital.library.unt.edu/ark:/67531/metadc131468/
Isolation and Characterization of Polymorphic Loci from the Caribbean Flamingo (Phoenicopterus ruber ruber): New Tools for Wildlife Management
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Methods to determine genetic diversity and relatedness within populations are essential tools for proper wildlife management. Today the approach of choice is polymerase chain reaction-based microsatellite analysis. Seven new polymorphic loci were isolated from a microsatellite-enriched Caribbean flamingo genomic library and used to characterize survey populations of Caribbean and African greater flamingos. In addition, four of these loci were used to verify parentage relationships within a captive-breeding population of African greater flamingos. Parentage predictions based upon gamekeeper observations of breeding and nesting did not always agree with genetic-based parentage analyses of the nine suggested family groups. Four family groups were supported (groups I, II, III and VI) by there results. However, an analysis of the remaining five suggested groups, with a total of eight offspring/dam and eight offspring/sire suggested relationships, yielded seven exclusions of the suggested dam and six exclusions of the suggested sire. This put the overall suggested dam exclusion rate at 35% and exclusion rate for suggested sires at 29%. Although the keeper observation data for our family groups must be considered a variable of concern at this time, these findings are certainly suggestive that more carefully controlled studies may reveal that flamingos are not monogamous as long accepted, but rather socially monogamous or even promiscuous. Thus we have now been able to both characterize and demonstrate the utility of our polymorphic microsatellite loci. We hope these results will interest additional wildlife facilities in further parentage and behavioral studies that will collectively aid to improve monitoring and maintenance of genetic diversity, and as provide better insight into breeding habits of both wild and captive populations. digital.library.unt.edu/ark:/67531/metadc4908/
Isolation and Characterization of the Operon Containing Aspartate Transcarbamoylase and Dihydroorotase from Pseudomonas aeruginosa
The Pseudomonas aeruginosa ATCase was cloned and sequenced to determine the correct size, subunit composition and architecture of this pivotal enzyme in pyrimidine biosynthesis. During the course of this work, it was determined that the ATCase of Pseudomonas was not 360,000 Da but rather present in a complex of 484,000 Da consisting of two different polypeptides (36,000 Da and 44,000 Da) with an architecture similar to that of E. coli ATCase, 2(C3):3(r2). However, there was no regulatory polypeptide found in the Pseudomonas ATCase. digital.library.unt.edu/ark:/67531/metadc278859/
The Isolation and Chemical Study of Compounds Produced by a Strain of Penicillium Notatum
It is the purpose of this paper to present data on the isolation and study of the chemical nature of compounds produced by this strain of mold which resembles Penicillium notatum nestling. digital.library.unt.edu/ark:/67531/metadc53439/
Isolation and Identification of an Odor Compound Produced by a Selected Aquatic Actinomycete
The purpose of this study was to develop an efficient method for the concentration of specific volatile taste and odor compounds produced by a selected aquatic actinomycete. A second purpose was to isolate and identify the specific taste and odor compound present in the highest concentration. digital.library.unt.edu/ark:/67531/metadc131003/
Isolation and Identification of Bacterial Species Associated with the Common House Fly and Three Species of Cockroaches
In an attempt to demonstrate the role of insects as possible carriers of pathogenic bacterial organisms this investigation has been concerned with the determination of the microbial population associated both internally and externally with the common house fly and three species of the cockroach. digital.library.unt.edu/ark:/67531/metadc97036/
The Isolation and Identification of Micro-Organisms from Spoons of Public Eating Establishments in Denton, Texas
This investigation deals with the isolation and identification of bacteria found on selected samples of spoons in various eating establishments in the vicinity of Denton, Texas. digital.library.unt.edu/ark:/67531/metadc96865/
Isolation and Partial Characterization of a Bacterium Which Gives Off Filtrable Cells
The present study was on the isolation of a bacterium capable of producing filtrable forms which passed through the 0.45µ filter membrane and regenerated the parental form; the testing of the true filtrability of the isolate; the relationship between growth of the isolate and appearance of filtrability; partial characterization of the isolate and visualization of the elements that passed through the membrane filter with electron microscopy and shadow casting technique. digital.library.unt.edu/ark:/67531/metadc131613/
Isolation and Partial Characterization of Carotenoid Pigments of Mycobacterium Rhodochrous
It was the purpose of this investigation to isolate and characterize the pigments of Mycobacterium rhodochrous by partition behavior, chromatographic data, and absorption spectra. In addition, it was the purpose to determine whether or not the type of pigments found in M. rhodochrous is typical of those found in other mycobacteria. digital.library.unt.edu/ark:/67531/metadc131424/
Isolation, Characterization and Physiological Studies of Cyanide-Utilizing Bacteria
Ten bacteria capable of growth on the metal-cyano complex, tetracyanonickelate (II) {K2 [Ni(CN)J } (TCN), supplied as the sole nitrogen source, were isolated. Seven isolates were identified as pseudomonads while the remaining three were classified as Klebsiella species. In addition to TCN, all isolates were able to utilize KCN although it was significantly more toxic. The degradation of TCN was most complete when supplied at growth-limiting concentrations, did not occur when ammonia was present, and resulted in the formation of nickel cyanide [Ni(CN)2] as a degradation product. digital.library.unt.edu/ark:/67531/metadc278291/
The Isolation, Cultivation and Testing of Organisms Anatagonistic to a Streptomycin Resistant Strain of Pseudomonas Aeruginosa
The problem of finding an efficient antibiotic against Pseudomonas aeruginosa which can be used in the clinical treatment of genito-urinary tract infections resistant to treatment by streptomycin has not yet been solved. Therefore, this problem has consisted of first, the acquisition of possible inhibitors of the streptomycin resistant strain of Pseudomonas aeruginosa; second, the selection and identification of those which show a marked antagonism toward this organism; third, the determination of the antibiotic spectra of the inhibitors; fourth, the determination of whether the streptomycin resistant strain could also acquire a resistance to the antibiotic produced by its inhibitors; and last, an attempt to evaluate the therapeutic possibilities of the antibiotics demonstrated. digital.library.unt.edu/ark:/67531/metadc96983/
Isolation, Identification and Cultivation of Four Phytopathogenic Fungi
This investigation includes a morphological and cultural study of four rather common pathogenic fungi one of which attacks Zinnia elegans, one Lagerstroemia indica, one Ligustrum lodense and one Euonymus japonica. The problem includes, first, a determination of the genera of these four fungi as revealed by their morphology in natural habitat; second, a determination of the growth and cultural characteristics of these on Cornmeal, Potato, Bean, Prune and Carrot agars; third, a comparison of the growth and cultural characteristics of these in natural habitat with the same on the various agars used; and fourth, an evaluation of the five artificial culture media in so far as their usage is concerned in the growth and cultivation of these four species of fungi. digital.library.unt.edu/ark:/67531/metadc97038/