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  Partner: UNT Libraries
 Degree Level: Doctoral
 Collection: UNT Theses and Dissertations
Temporally Correct Algorithms for Transaction Concurrency Control in Distributed Databases
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Many activities are comprised of temporally dependent events that must be executed in a specific chronological order. Supportive software applications must preserve these temporal dependencies. Whenever the processing of this type of an application includes transactions submitted to a database that is shared with other such applications, the transaction concurrency control mechanisms within the database must also preserve the temporal dependencies. A basis for preserving temporal dependencies is established by using (within the applications and databases) real-time timestamps to identify and order events and transactions. The use of optimistic approaches to transaction concurrency control can be undesirable in such situations, as they allow incorrect results for database read operations. Although the incorrectness is detected prior to transaction committal and the corresponding transaction(s) restarted, the impact on the application or entity that submitted the transaction can be too costly. Three transaction concurrency control algorithms are proposed in this dissertation. These algorithms are based on timestamp ordering, and are designed to preserve temporal dependencies existing among data-dependent transactions. The algorithms produce execution schedules that are equivalent to temporally ordered serial schedules, where the temporal order is established by the transactions' start times. The algorithms provide this equivalence while supporting currency to the extent out-of-order commits and reads. With respect to the stated concern with optimistic approaches, two of the proposed algorithms are risk-free and return to read operations only committed data-item values. Risk with the third algorithm is greatly reduced by its conservative bias. All three algorithms avoid deadlock while providing risk-free or reduced-risk operation. The performance of the algorithms is determined analytically and with experimentation. Experiments are performed using functional database management system models that implement the proposed algorithms and the well-known Conservative Multiversion Timestamp Ordering algorithm. digital.library.unt.edu/ark:/67531/metadc2743/
Teen ages: Youth market romance in Hollywood teen films of the 1980s and 1990s
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This thesis examines the differences between teen romantic comedy films marketed to Generation X teenagers in the 1980s and Generation Y teenagers in the 1990s, focusing on the presentation of gender roles, consumptive behavior, and family. The 1980s films are discussed within the social context of the Reagan era and the conservatism of the New Right. The 1990s films are examined as continuing a conservative sensibility, but they additionally posit consumption as instrumental to achieving an idealized romance. Romantic comedy is traditionally a conservative genre, but these films illustrate female liberation through consumption. The source of difference between the cycles of teen romantic comedy is attributed to the media's attempt to position Generation Y teenagers as ideal consumers. digital.library.unt.edu/ark:/67531/metadc2749/
Interactions of Clean and Sulfur-modified Reactive Metal Surfaces with Aqueous Vapor and Liquid Environments : A Combined Ultra-high Vacuum/electrochemistry Study
The focus of this research is to explore the molecular-level interactions between reactive metal surfaces and aqueous environments by combined ultra-high vacuum/electrochemistry (UHV-EC) methodology. The objectives of this work are to understand (1) the effects of sulfate ions on the passivity of metal oxide/hydroxide surface layer, (2) the effects of sulfur-modification on the evolution of metal oxide/hydroxide surface layer, and (3) the effects of sulfur adsorbate on cation adsorption at metal surfaces. digital.library.unt.edu/ark:/67531/metadc278914/
The Effect of the Note-test System of Teaching Basic College Chemistry on Student Achievement, Attitude, and Critical Thinking Ability
The problem of this study was to determine the relative effectiveness of the note-test system and the traditional lecture system of teaching basic college chemistry. digital.library.unt.edu/ark:/67531/metadc278930/
A Collapsing Result Using the Axiom of Determinancy and the Theory of Possible Cofinalities
Assuming the axiom of determinacy, we give a new proof of the strong partition relation on ω1. Further, we present a streamlined proof that J<λ+(a) (the ideal of sets which force cof Π α < λ) is generated from J<λ+(a) by adding a singleton. Combining these results with a polarized partition relation on ω1 digital.library.unt.edu/ark:/67531/metadc2789/
Formalization of Collection Development in Selected Medium-sized Academic Libraries
The degree of formalization of collection development(the dependent variable) in selected medium-sized academic libraries and six independent variables believed to be related to the dependent variable were examined. The formalization of collection development was measured by an index of five dimensions. The six independent variables examined were age of the library, number of graduate degrees offered by the parent institution, estimated years of growth potential in terms of available shelf space, attitude of the library director toward cooperation, number of memberships held by the library in cooperative endeavors, and percentage of increase in the materials budget, from 1972 to 1982. digital.library.unt.edu/ark:/67531/metadc278902/
Masculine Role Conflict in Gay Men: Mediation of Psychological Well-Being and Help-Seeking Behaviors
Gender role issues have been an integral part of psychology since the 1970s. More recently, theories and research have surfaced concerning the issues of maleness in our society. Most of these theories focus on masculine gender role and how it affects men in various ways, e.g., their psychological well-being, substance use, relational abilities, and help-seeking behaviors. One area of maleness that has consistently been left out of the Masculine Role Conflict (MRC) debate is that of homosexuality. As a gay man develops, he finds himself at odds with society over something that he experiences biologically as normal and appropriate. It is the contention of this paper that MRC is an issue related to psychological distress among gay men and not psychological weakness in gay men, per se. digital.library.unt.edu/ark:/67531/metadc278913/
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/
Environmental Accounting: The Relationship Between Pollution Performance and Economic Performance in Oil and Gas Refineries
A research study is undertaken to determine if economic incentives exist for noncompliance with regulatory standards, and if accounting related disclosure of regulatory enforcement actions is a determinant of environmental performance. digital.library.unt.edu/ark:/67531/metadc279042/
An Expert System Approach to the Evaluation of Hypertext Engineering : An Experiment with KnowledgePro and MaxThink's
The purpose of this study is to create the prototype expert system, HEES, and to examine its usability and usefulness in evaluating hypertext software. digital.library.unt.edu/ark:/67531/metadc279010/
The Effect of Self Concept and Various Conceptual and Physical Practice Methods Upon the Performance of a Selected Basketball Motor Skill
The problem investigated was the effect of various methods of conceptual, physical, and conceptual-physical practice procedures upon performance of the basketball motor skill of foul shooting. The sub-problem under investigation was the effect of self-concept upon the performance of foul shooting. digital.library.unt.edu/ark:/67531/metadc279047/
Electron Density and Collision Frequency Studies Using a Resonant Microwave Cavity as a Probe
Electron densities and collision frequencies were obtained on a number of gases in a dc discharge at low pressures (0.70-2mm of Hg). These measurements were performed by microwave probing of a filament of the dc discharge placed coaxially in a resonant cavity operating in a TM₀₁₀ mode. The equipment and techniques for making the microwave measurements employing the resonant cavity are described. One of the main features of this investigation is the technique of differentiating the resonance signal of the loaded cavity in order to make accurate measurements of the resonant frequency and half-power point frequencies. digital.library.unt.edu/ark:/67531/metadc279091/
The Effect of Giving Class Time for Reading on the Reading Achievement of Fourth Graders and the Effect of Using a Computer-Based Reading Management Program on the Reading Achievement of Fifth Graders
This study investigated the problem that educators have throughout the state of Texas. The problem educators have is that reading scores continue to fall short of state expectations. This study investigated the effectiveness of 90 minutes of class time given for reading to students who use the Electronic Bookshelf Program and the effectiveness of the Electronic Bookshelf Program, which is being sold to school districts throughout the nation. The literature review focused on the effectiveness of independent reading on reading achievement, and the effectiveness of using computer-based reading programs to increase reading achievement. digital.library.unt.edu/ark:/67531/metadc279001/
Chemical Equilibria in Binary Solvents
Dissertation research involves development of Mobile Order Theory thermodynamic models to mathematically describe and predict the solubility, spectral properties, protonation equilibrium constants and two-phase partitioning behavior of solutes dissolved in binary solvent mixtures of analytical importance. Information gained provide a better understanding of solute-solvent and solvent-solvent interactions at the molecular level, which will facilitate the development of better chemical separation methods based upon both gas-liquid and high-performance liquid chromatography, and better analysis methods based upon complexiometric and spectroscopic methods. Dissertation research emphasizes chemical equilibria in systems containing alcohol cosolvents with the understanding that knowledge gained will be transferable to more environmentally friendly aqueous-organic solvent mixtures. digital.library.unt.edu/ark:/67531/metadc278936/
Perceived Barriers to the Implementation of Site Based Management
The purpose of this study was to identify perceived barriers to the implementation of site-based management for administrators in the Region XII Service Center area in Texas. digital.library.unt.edu/ark:/67531/metadc278906/
Susceptibility of College Students to Alcohol Abuse and Alcohol Related Problems: the Impact of Family Environmental Factors
The purpose of this study was to examine the impact of parental divorce, level of family conflict, and family history of alcoholism on the alcohol use patterns of college students. Gender differences were also explored. Multivariate Analysis of Variance revealed mixed results. Parental marital status was found to have no significant effect on college students' alcohol behavior. High family conflict had a significant impact on both level of current alcohol use and level of alcohol related problems. A positive family history of alcoholism was found to have effects on the level of alcohol related problems encountered by students. Gender played a significant role, with males reporting higher levels of alcohol-related problems. No significant interactions were found. Results, contributions and limitations of the study are discussed. digital.library.unt.edu/ark:/67531/metadc278986/
Creating a Mythistory: Texas Historians in the Nineteenth Century
Many historians have acknowledged the temptation to portray people as they see themselves and wish to be seen, blending history and ideology. The result is "mythistory." Twentieth century Texas writers and historians, remarking upon the exceptional durability of the Texas mythistory that emerged from the nineteenth century, have questioned its resistance to revision throughout the twentieth century. By placing the writing of Texas history within the context of American and European intellectual climates and history writing generally, from the close of the eighteenth century to the beginning of the twentieth, it is possible to identify a pattern that provides some insight into the popularity and persistence of Texas mythistory. digital.library.unt.edu/ark:/67531/metadc278988/
Out with the Old? Voting Behavior and Party System Change in Canada and the United States in the 1990's
This study has attempted to explain the dramatic challenges to the existing party system that occurred in Canada and the United States in the early 1990s. The emergence of new political movements with substantial power at the ballot box has transformed both party systems. The rise of United We Stand America in the United States, and the Reform Party in Canada prompts scholars to ask what forces engender such movements. This study demonstrates that models of economic voting and key models of party system change are both instrumental for understanding the rise of new political movements. digital.library.unt.edu/ark:/67531/metadc278907/
Participation in Student Financial Aid Programs during the Freshman Year and Persistence in a Private University
The study determined the overall persistence rate of first-time full-time entrants into a mid-sized private university during the fall semesters 1989 to 1991 to the 2nd year (1990 to 1992). The study compared the retention rate of recipients and nonrecipients of a variety of financial aid programs. Included is a comparison of groups receiving various types of financial assistance and whether or not there are differences between the groups with respect to types of assistance, gender, ethnicity (African American, Hispanic, Anglo), high school grade point average, and national test scores (SAT, ACT). The types of assistance studied were categorized by academic scholarships, university-operated student employment, need-based grants, activity awards, entitlements, and loans. The question of whether renewal, elimination, or reduction in assistance relates to retention was also studied. digital.library.unt.edu/ark:/67531/metadc278944/
Unique applications of cultured neuronal networks in pharmacology, toxicology, and basic neuroscience
This dissertation research explored the capabilities of neuronal networks grown on substrate integrated microelectrode arrays in vitro with emphasis on utilizing such preparations in three specific application domains: pharmacology and drug development, biosensors and neurotoxicology, and the study of burst and synaptic mechanisms. Chapter 1 details the testing of seven novel AChE inhibitors, demonstrating that neuronal networks rapidly detect small molecular differences in closely related compounds, and reveal information about their probable physiological effects that are not attainable through biochemical characterization alone. Chapter 2 shows how neuronal networks may be used to classify and characterize an unknown compound. The compound, trimethylol propane phosphate (TMPP) elicited changes in network activity that resembled those induced by bicuculline, a known epileptogenic. Further work determined that TMPP produces its effects on network activity through a competitive inhibition of the GABAA receptor. This demonstrates that neuronal networks can provide rapid, reliable warning of the presence of toxic substances, and from the manner in which the spontaneous activity changes provide information on the class of compound present and its potential physiological effects. Additional simple pharmacological tests can provide valuable information on primary mechanisms involved in the altered neuronal network responses. Chapter 3 explores the effects produced by a radical simplification of synaptic driving forces. With all synaptic interactions pharmacologically limited to those mediated through the NMDA synapse, spinal cord networks exhibited an extremely regular burst oscillation characterized by a period of 2.9 ± 0.3 s, with mean coefficients of variation of 3.7, 4.7, and 4.9 % for burst rate, burst duration, and inter-burst interval, respectively (16 separate cultures). The reliability of expression of this oscillation suggests that it may represent a fundamental mechanism of importance during periods of NMDA receptor dominated activity, such as embryonic and early postnatal development. NMDA synapse mediated activity produces a precise oscillatory state that allows the study of excitatory-coupled network dynamics, burst mechanisms, emergent network properties, and structure-function relationships. digital.library.unt.edu/ark:/67531/metadc2797/
Saving Society Through Politics: the Ku Klux Klan in Dallas, Texas in the 1920s
This study analyzes the rise of the 1920s Ku Klux Klan in Dallas, Texas, in the context of the national Klan. It looks at the circumstances and people behind the revival of the Klan in 1915. It chronicles the aggressive marketing program that brought the Klan to Dallas and shows how the Dallas Klavern then changed the course of the national Klan with its emphasis on politics. Specifically, this was done through the person of Hiram Wesley Evans, Dallas dentist and aspiring intellectual, who engineered a coup and took over the national Klan operations in 1922. Evans, as did Dallas's local Klavern number 66, emphasized a strong anti-immigrant, anti-Catholic ideology to recruit, motivate, and justify the existence of the Ku Klux Klan. The study finds that, on the local scene, the Dallas Klavern's leadership was composed of middle and upper-middle class businessmen. Under their leadership, the Klan engaged in a variety of fraternal and vigilante activities. Most remarkable, however, were its successful political efforts. Between 1922 and 1924, the Klan overthrew the old political hierarchy and controlled city and county politics to such a degree that only the Dallas school board escaped the Invisible Empire's domination. Klavern 66 also wielded significant control of state Klan operations and worked vigorously and with some success to elect Klan officials at the state level. As the dissertation shows, all of this occurred in the face of heavy and organized opposition from political elites and those who opposed the Klan on principle. Finally, the dissertation looks at the complex combination of factors that brought the Klan's influence to an end. National scandals, internal squabbles, political failures, and longsuffering opposition from the mainstream press chipped away at the public's favorable impression of the Klan. Successful immigration restriction, an improving economy, and a lessening of post-war social tensions reduced the Klan's attractiveness. As a result, national and local Dallas membership dropped precipitously after 1924, and the Klan's dominance in local politics faded as well. digital.library.unt.edu/ark:/67531/metadc279068/
Empirical Research of Decision-making Effectiveness When Using Differing Presentation Formats Under Varying Decision Tasks
The purpose of this research was to determine if presentation format, given a particular task to be performed, would affect the decision-making process of financial decision makers. The problem motivating this study is the potential for managers to make inefficient decisions when they use reports which are presented inappropriately for a given task. digital.library.unt.edu/ark:/67531/metadc279040/
The Use of an Academic Library by University Students
Academic librarians have for a number of decades been interested in understanding more about how and why students use libraries. This study contributes to that area of library administration by focusing on nine factors thought to be associated with student use of academic libraries. digital.library.unt.edu/ark:/67531/metadc279070/
A Comparison of the Desirability and Feasibility of Accountability Measures as Perceived by Public School Administrators and Teachers
This study had three main purposes. The first was to determine the perceptions of public school administrators toward desirability and toward feasibility of accountability items. The second was to determine the perceptions of public school teachers toward desirability and toward feasibility of accountability items. The third was to compare the perceptions of administrators with those of teachers and to indicate areas where they seemed to be in agreement or disagreement. digital.library.unt.edu/ark:/67531/metadc279032/
Light Spectra Distributions in Temperate Conifer-Forest Canopy Gaps, Oregon and in Tropical Cloud-Forest Canopy, Venezuela
Light spectra distributions were measured in two different montane forests: temperate and tropical. Spectral light measurements were made in different sized canopy gaps in the conifer forest at H. J. Andrews Experimental Forest in Oregon, USA. Researchers at Oregon State University created these gaps of 20 m, 30 m, and 50 m in diameter. In the tropical cloud forest, spectral light measurements were made in two plots that were permanently established at La Mucuy Parque Nacional in Venezuela, in collaboration with researchers at Universidad de Los Andes. In both studies, spectra and distributions of physiologically active light were analyzed: red, far-red, R/FR ratio, and blue light. digital.library.unt.edu/ark:/67531/metadc279052/
Reading Informational Tradebooks Aloud to Inner City Intermediate Fourth and Sixth Grade Students : A Comparison of Two Styles
This study measured the effects of reading aloud informational books to fourth and sixth grade students in the inner city. digital.library.unt.edu/ark:/67531/metadc279041/
An Exploratory Investigation of the Origins and Regulatory Actions of the United Kingdom's Financial Reporting Review Panel
In 1990, the accounting profession and the British government worked together to establish a new regulatory framework for financial reporting in the United Kingdom (UK), the Financial Reporting Council (FRC) and its two subsidiaries, the Accounting Standards Board (ASB) and the Financial Reporting Review Panel (FRRP). The FRRP enforces companies' compliance with the ASB's accounting standards and the accounting provisions of the UK Companies Act. Only one study, Brandt et al. (1997), has examined the activities and effectiveness of the FRRP. This dissertation attempts to extend Brandt et. al (1997) and add to understanding of the origins and regulatory actions of the FRRP. digital.library.unt.edu/ark:/67531/metadc279018/
A Comparative Study and Model of the Certification Requirements for Vocational Office Education Teacher-Coordinators in the United States
The purposes of the study were (1) to describe the historical rationale for teacher certification, (2) to survey and report the present requirement of the states for certification as a vocational office education teacher-coordinator, (3) to survey leading business and office education educators for recommendations for vocational office education teacher-coordinator certification requirements, (4) to examine, survey, and report the characteristics and qualifications of employed vocational office education teacher-coordinators, and (5) to develop a model of criteria representing ideal standards for initial and continuing certification requirements for vocational office education teacher-coordinators. digital.library.unt.edu/ark:/67531/metadc278943/
Cognitive Dysfunction in Systemic Lupus Erythematosus
The purpose of the study was to determine the point prevalence of cognitive dysfunction in patients with systemic lupus erythematosus (SLE) and to investigate its association with corticosteroids and depression. The severity of dysfunction and the pattern of cognitive changes were examined. This study hypothesized that cognitive dysfunction is common in SLE and many previous studies have underestimated its prevalence, partially due to using limited neuropsychological batteries and insensitive test instruments. It was further hypothesized that the pattern of cognitive changes in SLE patients will resemble that observed in subcortical dementias. digital.library.unt.edu/ark:/67531/metadc278952/
Natural Smooth Measures on the Leaves of the Unstable Manifold of Open Billiard Dynamical Systems
In this paper, we prove, for a certain class of open billiard dynamical systems, the existence of a family of smooth probability measures on the leaves of the dynamical system's unstable manifold. These measures describe the conditional asymptotic behavior of forward trajectories of the system. Furthermore, properties of these families are proven which are germane to the PYC programme for these systems. Strong sufficient conditions for the uniqueness of such families are given which depend upon geometric properties of the system's phase space. In particular, these results hold for a fairly nonrestrictive class of triangular configurations of scatterers. digital.library.unt.edu/ark:/67531/metadc278917/
The Rhetoric of Posthumanism in Four Twentieth-Century International Novels
The dissertation traces the trope of the incomplete character in four twentieth-century cosmopolitan novels that reflect European colonialism in a global context. I argue that, by creating characters sharply aware of the insufficiency of the Self and thus constantly seeking the constitutive participation of the Other, the four authors E. M. Forster, Samuel Beckett, J. M. Coetzee, and Congwen Shen all dramatize the incomplete character as an agent of postcolonial resistance to Western humanism that, tending to enforce the divide between the Self and the Other, provided the epistemological basis for the emergence of European colonialism. For example, Fielding's good-willed aspiration to forge cross-cultural friendship in A Passage to India; Murphy's dogged search for recognition of his Irish identity in Murphy; Susan's unfailing compassion to restore Friday's lost speech in Foe; and Changshun Teng, the Chinese orange-grower's warm-hearted generosity toward his customers in Long River--all these textual occasions dramatize the incomplete character's anxiety over the Other's rejection that will impair the fullness of his or her being, rendering it solitary and empty. I relate this anxiety to the theory of "posthumanism" advanced by such thinkers as Marx, Bakhtin, Sartre, and Lacan; in their texts the humanist view of the individual as an autonomous constitution has undergone a transformation marked by the emphasis on locating selfhood not in the insular and static Self but in the mutable middle space connecting the Self and the Other. digital.library.unt.edu/ark:/67531/metadc278990/
The Relationship of Fifth-Grade Students' Self-Concepts and Attitudes toward Mathematics to Academic Achievement in Arithmetical Computation, Concepts, and Application
The purpose of this study was to determine the interrelationship of self-concept and attitude toward mathematics to academic achievement in the areas of arithmetical computation, concepts, and application. digital.library.unt.edu/ark:/67531/metadc278963/
A Study of Differences Perceived by Information Systems Professionals in the Systems Development Job Environment Due to the Use of ICASE Technology
Information systems professionals now face the automation of their own work in integrated computer aided software engineering. Organizations need to achieve all the leverage possible from costly IT implementations to enhance competitiveness, profitability, and survival in a rapidly changing environment. ICASE technology is a part of the infrastructure necessary to meet this challenge but appears to present significant difficulties in implementation. digital.library.unt.edu/ark:/67531/metadc278966/
Effects of Frustration Tolerance Training on Young Institutionalized Retarded Children
The major problem investigated was to ascertain the extent to which a training program designed specifically to increase frustration tolerance would reduce selected behavioral problems in institutionalized mentally retarded children. Of lesser importance was the problem of examining the extent to which the prescribed training program had differential effects on brain-injured and non-brain-injured retarded children. digital.library.unt.edu/ark:/67531/metadc278989/
Convergence of Self and Other Ratings of Personality: a Structural Equation Analysis
Recently, multi-source feedback has been a popular way of providing performance-related feedback to individuals in many organizations. Many who use multi-source feedback consider Rating Convergence, others seeing target individuals as they see themselves, to be a positive outcome of this process. However, the variables that account for Rating Convergence are not known. This study investigated whether the personality factor Extroversion and Behavioral Consistency, acting as a moderator variable, could account for Self-other Rating Convergence, particularly the Convergence between self and peer Ratings. The sample consisted of 235 mid-level managers from a variety of industries who were participants in individual career development workshops. Using structural equation modeling, the results indicated that a model consisting of a single Extroversion factor could account for the convergence of self-peer ratings. This finding calls into question the significance of Rating Convergence when using multi-source rating instruments that provide feedback on trait characteristics since it may be heavily influenced by a single personality factor rather than observers' comprehensive understanding of the ratee's performance. digital.library.unt.edu/ark:/67531/metadc278950/
Analysis of Phytoplankton Responses to Water Chemistry Dynamics in a Moderately Eutrophic North Texas Reservoir
Canonical correspondence analysis (CCA) was used to explore relationships between measured environmental variables and in situ phytoplankton communities in a moderately eutrophic North Texas Reservoir. digital.library.unt.edu/ark:/67531/metadc278929/
Computational Complexity of Hopfield Networks
There are three main results in this dissertation. They are PLS-completeness of discrete Hopfield network convergence with eight different restrictions, (degree 3, bipartite and degree 3, 8-neighbor mesh, dual of the knight's graph, hypercube, butterfly, cube-connected cycles and shuffle-exchange), exponential convergence behavior of discrete Hopfield network, and simulation of Turing machines by discrete Hopfield Network. digital.library.unt.edu/ark:/67531/metadc278272/
Relationships among and Between Alcohol Consuption Rates, Alcohol Expectancies, and Early Recollections among Three Groups of College Males
Extensive documentation exists which firmly establishes the high use rates and disastrous consequences of alcohol consumption by university students. Use rates for this population have been linked to attitudes toward alcohol consumption, especially alcohol expectancies. Research to date on alcohol expectancies has shown differences in expectancies among various groups. However much of this research has been conducted without a theoretical basis, accomplishing little in explaining how beliefs and drinking behavior are related. The investigation was designed to explore the relationships among and between early recollections and alcohol expectancies and to explore how the contents of early recollections function in relation to expectancies in terms of alcohol consumption patterns among three groups of college males (student-athletes, fraternity men, and independents). The content of individuals' early recollections was analyzed and compared to expectancies and consumption rates for each of the three groups. The study addressed seven hypotheses regarding alcohol consumption rate comparisons, comparisons of consequences experienced as a result of alcohol consumption, comparisons of alcohol expectancies, and comparisons of reported content of early recollections. Multiple regression analysis was utilized to test the extent to which select early recollections and alcohol expectancy scores contributed to the explained variance in alcohol consumption patterns. digital.library.unt.edu/ark:/67531/metadc278278/
Existence of Many Sign Changing Non Radial Solutions for Semilinear Elliptic Problems on Annular Domains
The aim of this work is the study of the existence and multiplicity of sign changing nonradial solutions to elliptic boundary value problems on annular domains. digital.library.unt.edu/ark:/67531/metadc278251/
Fluency Training as a Pedagogical Tool to Improve Performance of Undergraduate Students Enrolled in the First Financial Accounting Course at a Regional Oklahoma University
This study contributes to the debate on accounting pedagogy in the basic financial accounting course by examining the pedagogical tool of fluency training as a way to improve student performance. Fluency training has been shown to improve performance of students in other academic disciplines. digital.library.unt.edu/ark:/67531/metadc278248/
Strategy, Structure, and Performance of U.S.-Based Multinational Organizations: A Fit Theory Study
The research question addressed by the study asks, "Is international integration strategic and departmental structural fit a predictor of performance in U.S.-based, single-business multinational organizations?" The study is designed to extend existing research in international integration strategy, which is often called "global strategy," "globalization," or "internationalization" in the popular press and academic research literature. digital.library.unt.edu/ark:/67531/metadc278252/
Strategies Employed by School Administrators to Prevent or Reduce Gang-Related Activity and Violence in Selected High Schools in a North Central Texas School District
This research investigated the strategies used by school administrators in selected high schools to prevent or reduce gang-related activity and violence. Interviews were conducted with six high school principals, six assistant principals, fifteen staff members and eleven students. All of the students were gang members. The results of the study showed that there are gang members in all schools, but that their gang activity at school is curtailed by some specific strategies. digital.library.unt.edu/ark:/67531/metadc278289/
An Investigation of the Effectiveness of Programed Learning in the Teaching of Harmonic Dictation in a Beginning College Music Theory Course
The problem of the study was to investigate the comparative effectiveness of two methods of teaching harmonic dictation to beginning college music students. The methods were (1) the conventional teacher-classroom approach as suggested by Robert Ottman's Elementary Harmony, and (2) a linear programed book to be used in conjunction with a series of tape recordings. This volume is Harmonic Dictation, a Programed Text. digital.library.unt.edu/ark:/67531/metadc278296/
The Relationships Among a Reading Guidance Program and the Reading Attitudes, Reading Achievement, and Reading Behavior of Fifth Grade Children in a North Louisiana School
The purpose of this study was to determine whether or not the introduction of a regular librarian-centered reading guidance program as an integral part of the entire school program would improve the reading attitudes and habits of elementary school students and increase the reading achievement scores on a standardized test of elementary school students. In addition, the reading attitudes of students were compared with reading achievement scores to assess any relationship between the two. digital.library.unt.edu/ark:/67531/metadc278242/
Service-learning in 4-year Public Colleges and Universities : Programs, Profiles, Problems, and Prospects
This study investigated the levels of involvement in service-learning programs and activities in 4-year public colleges and university that held membership in the Southern Association of Colleges and Schools (SACS). digital.library.unt.edu/ark:/67531/metadc278283/
A Comparison of Selected Arkansas North Central Association Secondary Schools Using the Evaluative Criteria
The purpose of this study was to report the evaluation ratings and describe the Arkansas NCA secondary schools, as indicated in the Summary Reports of the Evaluative Criteria, 1960 edition, and to compare ratings on all sections and divisions, section D-J, by size classifications. digital.library.unt.edu/ark:/67531/metadc278250/
The Course Content of Life, Earth, and Physical Science Programs in Selected Texas Junior High Schools
The purpose of the study was to determine the agreement between reported levels of emphasis of course content topics suitable for the junior high school and the optimum level of emphasis as it was recommended by Texas science supervisors and national science education specialists. digital.library.unt.edu/ark:/67531/metadc278265/
Of Time and Judicial Behavior : Time Series Analyses of United States Supreme Court Agenda Setting and Decision-making, 1888-1989
This study examines the agenda setting and decision-making behavior of the United States Supreme Court from 1888 to 1989. digital.library.unt.edu/ark:/67531/metadc277657/
Intentions and Implementation of the Professional Development and Appraisal System in Texas
The purpose of this study was to describe the intentions of the designers of the Professional Development and Appraisal System (PDAS) in Texas and the perceptions of teachers regarding its implementation. Information for the study was gathered in two phases using two methodologies. The first was a semi-structured interview with four expert informants instrumental in the design and implementation of the PDAS at the state level. The second component of the study was conducted with teachers using a 37-item Likert survey. The population for this phase of the study was 150 elementary and 150 secondary teachers chosen randomly from three school districts in North Central Texas. The districts were selected to represent a variety of sizes in regard to student population and represent diverse student population characteristics and socioeconomic levels. Data from the semi-structured interviews and the returned surveys were analyzed to determine the designers' intentions and areas of emphasis and to describe the alignment the teachers' perceptions and the designers' intentions. Quantitative data gathered from the surveys were analyzed using descriptive statistics as well as a correlation and function analysis and analysis based on a Cronbach alpha coefficient. The analysis of data revealed the following: 1. Teachers perceived that the implementation of the PDAS has a high level of effect in the areas of learner-centered instruction; classroom management; support for all students; the professional growth of teachers; communication; learning application; and, TAAS improvement. 2. Teachers' perceptions were not affected by years of experience. 3. Teachers' perceptions were not affected by their field of instruction. One implication of this study is that the final design represents the intentions of designers, although the area of student achievement is not weighted as heavily in teachers' evaluations as was originally intended. Furthermore, education leaders in Texas may conclude that teachers perceive a high level of impact upon their classroom practices as a result of implementation of the PDAS instrument. If future research reveals that the perceived impact is accurate and that classroom practices of teachers did change as a result of the instrument's implementation to the degree perceived, then this is a model for policy implementation at the state level that is extremely effective. Furthermore, additional researchers may investigate the link between classroom practices and student achievement. This research study is a first step toward describing effective, replicable practices. digital.library.unt.edu/ark:/67531/metadc2721/
External Factors and Ethnic Mobilization : A Global Study of the Causes of Military Mobilization among Ethnic Groups, 1945-1995
The main purposes of this study are to elaborate on the concept of ethnic military mobilization and to identify the factors that contribute to its occurrence. digital.library.unt.edu/ark:/67531/metadc277639/
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