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 Collection: UNT Theses and Dissertations
An Investigation of the Influence of Evaluator Background on Appraisals of a Music Lesson Using the Texas Teacher Appraisal System
This study's purpose was to investigate the differences in scores and written comments given by two appraisal groups in their evaluation of a music teacher using the Texas Teacher Appraisal System (TTAS). One appraiser group had musical training while the other group specialized in other subjects. Analyses of both group's appraisal scores showed no significant differences. An examination of the written comments revealed that both appraisal groups focused on the same aspects of the lesson and used similar vocabulary. The TTAS instrument was a consistent measure of generic teacher behaviors in the music lesson, but it did not measure specific music teaching behaviors or encourage suggestions for improving musical instruction. digital.library.unt.edu/ark:/67531/metadc277901/
An Investigation of the Nonverbal Communication Behaviors and Role Perceptions of Pre-Service Band Teachers who Participated in Theatre Seminars
This qualitative study used a multiple case study methodology to explore the nonverbal communication behaviors and role perceptions of pre-service band teachers, and the extent to which these individuals found meaning and value in theatre seminars with respect to those factors. The informants participated in three theatre seminars taught by theatre faculty at the researcher's university. The researcher collected data in the form of videotaped theatre seminar observations, videotaped classroom teaching observations, videotaped informant reflections of teaching episodes, online peer discussions and journaling, and informant interviews. Data were analyzed, coded, and summarized to form case summaries. A cross-case analysis was performed to identify emergent themes. The broad themes identified were past experience, adaptation, realization, and being aware. The informants found that the theatre seminars increased their awareness of nonverbal communication behaviors in the classroom, and had the potential to be meaningful and valuable with respect to their perceptions of their roles as teachers. digital.library.unt.edu/ark:/67531/metadc9019/
An Investigation of the Perception of Delivered Quality at Different Levels of Organizational Hierarchy in Services
The overall purpose of this research was to add to existing theory of quality pertaining to the service provider's perception of quality. Quality in the service industry is difficult to assess because of the intangible, heterogeneous and labor intensive nature of services. In addition, personnel have varying perceptions of delivered quality based on their position within the organizational hierarchy. This study enhanced the Service Quality Model developed by Zeithaml, Berry, and Parasuraman (1988). An additional gap ("gap 6") was hypothesized and investigated. This gap describes the differences in perceived delivered quality by employees at different organizational levels (e.g., managerial, supervisory, and non-management employees) across different market segments. The researcher proposed that "gap 6" has a significant impact on total perceived delivered quality. The survey instrument addressed five dimensions of overall quality: tangibles, reliability, responsiveness, assurance, and empathy. The survey was administered to employees from hotels representing three market segments located within the same metropolitan area and managed by the same company. A 3 X 3 factorial design was used with three organizational levels (managers, supervisors, and hourly employees) and three lodging market segments (luxury, business-traveller, and long-term/suite). Data analyses included descriptive statistics, analysis of variance (ANOVA), and Tukey's Multiple Comparison Test. digital.library.unt.edu/ark:/67531/metadc278751/
An Investigation of the Perceptions of Christian Seminary Counseling Students Regarding Play Therapy
The threefold purpose of this study was to assess the extent to which counseling seminary students' beliefs corresponded to the tenets of child-centered play therapy, the amount of training seminary counseling students received in the area of child counseling and play therapy, and the applicability of child-centered play therapy courses in seminary counselor education programs. The researcher pursued this purpose through administration of a survey instrument she developed. The instrument consisted of 22 demographic items and 23 5-point Likert scale items based on the tenets of child-centered play therapy. The sample was comprised of 206 seminary counseling students from 12 Christian seminaries across the United States: 155 female and 51 male participants ranging in age from 21 to 60 years old and including 5.3% African American, 3.9% Asian, 1.5% Biracial/Multiracial, 3.4% Hispanic, 83% White (Non-Hispanic), 2.4% Other. Multiple regression analysis was utilized to determine which demographic variables were significant predictors of respondents' beliefs regarding child-centered play therapy. Results indicated significance at p < .05 level. Specifically, respondents who reported feeling more prepared to counsel children reported beliefs more congruent with child-centered play therapy, and respondents from the Southwestern and Southeastern portions of the United States exhibited beliefs less congruent with child-centered play therapy. Respondents' reports of their gender, age, denominational grouping, counseling theory, previous training to work with children, parental status, and future plans to counsel children did not significantly predict beliefs corresponding to child-centered play therapy. Descriptive data revealed that 83.5% of respondents intended to counsel children after completing their graduate studies, yet only 20.4% of respondents reported having completed coursework in child counseling; thus, they appeared inadequately prepared to work with this specialized population. Implications for seminary counselor education programs are discussed. digital.library.unt.edu/ark:/67531/metadc30520/
Investigation of the Pharmacokinetics of Diazepam in Juvenile Channel Catfish (Ictalurus Punctatus)
The presence of pharmaceuticals in the environment is becoming an increasing regulatory and scientific concern. Thus, the metabolic profile and bioconcentration potential of diazepam, a model benzodiazepine, were examined, as well as effects on the endocrine system in channel catfish. Through the use of specific and non-specific cytochrome P450 (CYP450) inhibitors, it was determined that CYP3A-like enzymes may play a role in the biotransformation of diazepam into temazepam; however, the isoform(s) required for the formation of other metabolites is still unknown. Overall, only around 7-8% of diazepam is biotransformed into two known metabolites. Due to the lack of inherent metabolism of diazepam in channel catfish, further analysis was conducted to determine the tissue-specific bioconcentration potential of diazepam in catfish. Various tissues were analyzed for the presence of diazepam as well as metabolites and bioconcentration factors (BCF) were calculated, which were all well below regulatory threshold values (> 2000). Additionally, modulation of the endocrine system by diazepam was examined by measuring steroid hormone concentrations and analyzing mRNA expression of selected steroidogenic enzymes and receptors. Two steroidogenic enzymes were modulated following diazepam exposure, indicating potential endocrine disrupting properties of diazepam. Together, these data suggest that diazepam exhibits low metabolic transformation rates in channel catfish, which may lead to accumulation of benzodiazepine compounds that may negatively affect the endocrine system. However, further studies should be aimed at identifying other steroidogenic enzymes and/or receptors that may be modulated following diazepam exposure. digital.library.unt.edu/ark:/67531/metadc407799/
An Investigation of the Phase Model of Psychotherapy Across Therapeutic Orientations: Are Different Approaches Actually All That Different?
The current study investigated the process of change underlying two different evidence-based treatments that yield similar outcome effectiveness in the treatment of depression: Cognitive Therapy (CT) and Interpersonal Therapy (IPT). The phase model of psychotherapeutic change (Howard et al., 1993) change is used to provide both a theoretical and practical framework in which to assess different patterns of change across the treatment modalities. The phase model posits that recovery from distress occurs in three sequential stages: remoralization, remediation and rehabilitation. CT can be conceptualized as a treatment in which the primary focus is on the treatment of symptoms (remediation), whereas IPT can typically be conceptualized as focusing on interpersonal conflicts and functioning (rehabilitation). The study utilized the TDCRP dataset (Elkin et al., 1985). Survival analysis indicated no significant difference in terms of onset or pattern of improvement across treatment orientations. Chi square analyses indicated individuals treated with IPT spend significantly more time engaged in rehabilitation compared to their CT counterparts. Taken together, these findings represent evidence that the process of therapeutic change is similar, if not virtually identical, across therapeutic orientation. The analyses also indicate that the phases of therapy may not necessarily be mutually exclusive and sequential, but may instead represent co-occurring patterns of improvement which are not sequentially determined. digital.library.unt.edu/ark:/67531/metadc283862/
Investigation of the Possible Application of High and Low Frequency Conductance Measurements to the Analysis of Poly-Component Systems
The immediate goal of this thesis was the analysis of a three-component system whose major component was water. This analysis was to be the result of a procedure which could be readily extended to more complex systems. digital.library.unt.edu/ark:/67531/metadc107874/
Investigation of the Pressure Dependence of SO3 Formation
The kinetics of the pressure dependent O + SO2 + Ar reaction have been investigated using laser photolysis resonance fluorescence at temperatures of 289 K, 399 K, 581 K, 699 K, 842 K and 1040 K and at pressures from 30-665 torr. Falloff was observed for the first time in the pressure dependence. Application of Lindemann theory yielded an Arrhenius expression of k(T) = 3.3 x 10-32exp(-992/T) cm6 molecule-1 s-1 for the low pressure limit and k(T) = 8.47 x 10-14exp(-468/T) cm3 molecule-1 s-1 for the high pressure limit at temperatures between 289 and 842 K. The reaction is unusual as it possesses a positive activation energy at low temperature, yet at higher temperatures the activation energy is negative, illustrating a reaction barrier. digital.library.unt.edu/ark:/67531/metadc4403/
An Investigation of the Relationship between Girls' Reasons for Electing Homemaking and Their Vocational Preferences and Aptitudes
A review of preceding studies reveals a number of factors which influence junior- and senior-high-school girls to elect homemaking. The present study proposes to discover additional factors. It, furthermore, proposes to determine whether any relationships exist between the expressed interests of students who elect homemaking and their vocational preferences and general aptitudes. digital.library.unt.edu/ark:/67531/metadc163828/
An Investigation of the Relationship between HIV and Prison Facilities in Texas: The Geographic Variation and Vulnerable Neighborhood Characteristics
Previous research suggests that prisons may be fueling the spread of HIV infection in the general population. In 2005, the HIV rate was more than 2.5 times higher in US prison populations. Environmental factors in prisons such as illicit drug use and unprotected sexual activities can be conducive for HIV transmission. Because the vast majority of prison inmates are incarcerated for less than three years, transmission of HIV between prison inmates and members of the general population may occur at a high rate. The environment in which an individual lives and the entities that comprise it affect the health of that person. Thus the location of prisons within communities, as well as socio-demographic characteristics may influence the geography of HIV infection. HIV surveillance data, obtained from the Texas Department of State Health Services, were used to investigate the relationship between the location of prison units in Texas and HIV infection rates in the surrounding zip codes. The results suggest that HIV prevalence rates are higher among geographic areas in close proximity to a prison unit. With continued behavioral risks and low treatment adherence rates among individuals infected with HIV, there is a possibility of increased HIV prevalence. Vulnerable places, locations with higher HIV prevalence, should be targeted for resource allocation and HIV prevention and care service. This study illustrates the importance of spatial analysis of places vulnerable to increased HIV prevalence in creating more effective public health prevention strategies and interventions. digital.library.unt.edu/ark:/67531/metadc84234/
An Investigation of the Relationship between Intelligence, Self-Concept and Social Competency among the Mentally Retarded
The purpose of this study is to add to the body of knowledge concerning intelligence, self-concept, and social competency as related to the habilitation of retardates by investigating the following problem: what is the relationship between intelligence, self-concept, and social competency among the mentally retarded? digital.library.unt.edu/ark:/67531/metadc131589/
An Investigation of the Relationship of Selected Variables to Sight-singing Ability
The problem is a study of the relationship of selected musical and extra-musical variables to sight-singing ability. digital.library.unt.edu/ark:/67531/metadc164294/
An Investigation of the Relationship of Self-Concept and Selected Personal Characteristics of Student Teachers to Success in Student Teaching
The problem of this study was to determine the relationships that exist between elementary student teachers' personality factors and success in student teaching. digital.library.unt.edu/ark:/67531/metadc164447/
An investigation of the relationships between job characteristics, satisfaction, and team commitment as influenced by organization-based self-esteem within a team-based environment
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Team-based management is a popular contemporary method of redesigning jobs in order to more effectively utilize the human potential of employees. The use of such management techniques should result in increased satisfaction and team commitment; however, many research studies have failed to demonstrate increases in affective outcomes on the part of the employee. The research question examined in this study is, "What specific job dimensions and situational factors result in higher levels of satisfaction and team commitment?" The Job Characteristics Model (Hackman & Oldham, 1975) provided a basis for this study. The model was designed for individual contributors and has not been extensively used in team research. As expected it was found that within a team-based environment higher levels of the five core job dimensions of skill variety, task identity, task significance, autonomy, and job feedback were associated with increased satisfaction and team commitment. Organization-based self-esteem was found to mediate the relationship between the five core job dimensions and the affective outcome variables. Contrary to expectations, however, it was found that consultative team members experienced higher levels of satisfaction and commitment than substantive team members. In addition, consultative team members reported higher levels of two core job dimensions, skill variety and task significance, and on the overall Job Diagnostic Survey than did substantive team members. These findings have significant implications for companies undergoing organizational redesign and questions whether those companies should implement advanced levels of employee involvement activities if the organizational goal is to increase satisfaction and commitment. The study employed a survey research design in which data was collected using a self-report questionnaire. A heterogeneous sample of 183 team members participating in either a consultative and substantive team from four different companies in nine locations provided the data for this field survey. Multivariate analyses, including hierarchial set regression, were used to test the hypotheses. digital.library.unt.edu/ark:/67531/metadc2589/
An Investigation of the Religious Intensity of Paranoid-Type Schizophrenics and Sociopaths
The present investigation was concerned with the effectiveness of religion in personality development and the significance of church attendance in ethical and moral control. These concepts were related to specific diagnoses of psychiatric patients to ascertain the effect of religion upon those patients diagnosed as paranoid-type schizophrenics and as sociopaths. In addition, the effect of this variable on other variables related to the patient's past religious experience, such as church attendance, was examined. The religiousness of the patients was measured by a single religious intensity questionnaire. digital.library.unt.edu/ark:/67531/metadc131507/
An Investigation of the Self-concept of Children with Low Levels of Intelligence
The purpose of this study was to investigate the relationship between intelligence and self-concept of children with low levels of mental maturity. In order to get a clearer picture of this relationship, the self-concept of children at various levels of mental deficiency was investigated. digital.library.unt.edu/ark:/67531/metadc131200/
An Investigation of the Self-perceptions Certified Fine Arts Teachers Have Toward Their Roles as Artist and Instructional Staff Member in Selected Public High Schools of Oklahoma
The purpose of this study was to investigate the self-perceptions certified public high school teachers in the fine arts have toward their roles as artist and instructional staff member. digital.library.unt.edu/ark:/67531/metadc277787/
An Investigation of the Semantics of Active and Inverse Systems
This study surveys pronominal reference marking in active and inverse languages. Active and inverse languages have in common that they distinguish two sets of reference marking, which are referred to as Actor and Undergoer. The choice of one series of marking over another is shown to be semantically and pragmatically determined. digital.library.unt.edu/ark:/67531/metadc278562/
An Investigation of the Significance of Client-Centered Play Therapy as a Counseling Technique
The problem of this study was an attempt to appraise critically the effectiveness of client-centered play therapy as a counseling technique. In order to ascertain the effects of client-centered play therapy with children who have emotional problems, learning difficulties, and behavior problems, this study was conducted. digital.library.unt.edu/ark:/67531/metadc164334/
An Investigation of the Traditional Cante Jondo as the Inspiration for the Song Cycle Five Poems of Garcia Lorca by Elisenda Fabregas
The traditional cante jondo is a song unique to Andalusia as it developed from the "mosaic" of cultures that have inhabited its borders, including Arabs, Jews and Gypsies. The genre expresses the history of the region, reveals the typography of the landscape and cries the tears of its people. "Deep song," the translation for cante jondo, is the forerunner of the flamenco, but it is a communication of a dark soul rather than an exuberant entertainment. The original folk idiom is a medium less concerned with beauty than the cathartic release of pain of every day life. It expresses the soul of Andalusia. This study explores the history and the poetic and musical forms Andalusian cante jondo as the inspiration for the poetry of Federico Garcia Lorca set by Elisenda Fabregas in the song cycle, Five Poems of Garcia Lorca (1992). Lorca felt the validity of "deep song" and he was disturbed that it was being corrupted by commercialism and was afraid it would be lost to posterity. His goal was to preserve the essence of the song and lift it to an artistic plain. He saw folk music as the core of the national musical and literary identity in Germany, France and Russia and worked to establish Spain as an artistic equal. Lorca's writings were not imitations of the traditional cante jondo. They echoed the history, the landscape and the tears, but they did so through symbolism and vivid imagery. The poet communicated on several levels, one as a voice of Andalusia, Spain and ultimately mankind and another with his own private message. His life was short, but his legacy is long. Fabregas, like Lorca, has taken a folk medium and expanded it beyond its original boundaries. Being of Spanish heritage, but not Andalusian, she is less committed to the local musical constraints. She felt the humanity in Lorca's poetic cries and expressed them through her own language. As a result her songs are intensely dramatic and are exciting pieces to perform. digital.library.unt.edu/ark:/67531/metadc4512/
Investigation of the Uniaxial Stress Dependence of the Effective Mass in N-Type InSb Using the Magnetophonon Effect
The magnetophonon effect was used to investigate the uniaxial stress dependence of the effective mass in n-type InSb (indium antimonide). digital.library.unt.edu/ark:/67531/metadc164537/
An Investigation of the Use of Acrylic Polymer Paints in Printing Photographic Silk Screen Images
This study investigates the adaptability of plastic paints to photographic silk screen materials and methods. The problem was to experiment with and further develop another technique for the artist, the silk screening of photographic images directly onto the painting surface with acrylic polymer paint. digital.library.unt.edu/ark:/67531/metadc163990/
An investigation of the use of instructional simulations in the classroom as a methodology for promoting transfer, engagement and motivation.
Innovative educators seek technologies to facilitate or enhance the learning experience while taking nothing away from the message of instruction. Simulations have been shown to meet this requirement. While simulations cannot replace the teacher or the message of instruction, they can provide a deeper and more cognitively engaging learning experience. Classroom use of simulations has been ongoing since the 1960's. However, substantive research on their efficacy remains limited. What research has been conducted indicates that simulations possess great potential as aids to instruction. The author of this dissertation pursued this question focusing on whether simulations contribute to instruction by facilitating transfer, improved motivation and increased engagement. This dissertation documents a study in which instructional simulations were used in undergraduate science courses to promote engagement, transfer and knowledge-seeking behavior. The study took place at Midwestern State University (MSU), a public university located in north-central Texas with a student population of approximately 5,500. The study ran during the fall 2006 and spring 2007 terms. Samples consisted of students enrolled in GNSC 1104 Life / Earth Science during the fall term and GNSC 1204 Physical Science during the spring term. Both courses were offered through the Department of Science and Mathematics at MSU. Both courses were taught by the same professor and are part of the core curriculum for undergraduates in the West College of Education at MSU. GNSC 1104 and GNSC 1204 yielded samples of n = 68 and n = 78 respectively. A simulation focusing on earthquakes was incorporated into the curriculum in GNSC 1104 while a simulation which presented concepts from wave propagation was included in GNSC 1204. Statistical results from this study were mixed. Nevertheless, studies of this type are warranted to gain a more complete understanding of how students are impacted by their interactions with simulations as well as the role simulations can play in the curriculum. digital.library.unt.edu/ark:/67531/metadc3943/
Investigation of Ultratrace Metallic and Organic Contaminants in Semiconductor Processing Environments
Detection of ultratrace levels of metallic ion impurities in hydrofluoric acid solutions and alkaline hydrogen peroxide solution was demonstrated using a silicon-based sensing electrode. The sensor's operation principle is based on direct measurements of the silicon open-circuit potential shift generated by the interaction between metallic ions and the silicon-based sensing surface. The new sensor can have practical applications in the on-line monitoring of microelectronic chemical processing. The detection of Ag+ content in KODAK waste water was carried out successfully by this novel sensor. Trace levels of organic impurities in the hydrofluoric acid solutions and in the cleanroom air were characterized by multiple internal reflection infrared spectroscopy (MIRIS) using an organics probe prepared directly from a regular silicon wafer. digital.library.unt.edu/ark:/67531/metadc277845/
An Investigation of Young Children's Awareness of Line and Line Quality in Art and Graphic Reproductions
The purpose of this study was to determine whether kindergarten children possess the ability to recognize, match, and discuss lines and line qualities. Using graphics and art reproductions, three matching tasks were constructed which examined young children's awareness of the line qualities of length, width, straightness, direction, movement, and uniformity. Graphics and art reproductions were also used to construct two tracing tasks employed to examine young children's awareness of actual and implied lines. The tasks were administered to 69 kindergarten students from four elementary schools in a public school district in the north central Texas area. digital.library.unt.edu/ark:/67531/metadc278901/
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 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 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 &#946;-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 &#946;-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 &#946;-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 &#946;-SiC crystals decreased and the amount of &#946;-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 &#946;-SiC linearly increased with the implanted fluences up to 5×1017 atoms /cm2. Above this fluence the amount of &#946;-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/
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/
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 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 (&#945; = .94), Freedom from Values Conflict (&#945; = .92), and Flexibility in Valuing (&#945; = .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 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/
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/