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A History of Howard Payne College with Emphasis on the Life and Administration of Thomas H. Taylor
Unpublished dissertation on the history of Howard Payne College and events leading up to its creation, and Thomas H. Taylor.
Date:
1956
Creator:
Hinton, William Harwood
System:
The Portal to Texas History
Impact of Labor Union Representation Elections on Wages and Selected Employer-Employee Relations in Nonprofit Hospitals in Texas
This study concerns the general question, "What has been the impact of collective bargaining representation elections on nonprofit hospitals in Texas?" The means of answering this question involved a study of wages and attitudes of nonprofessional employees in both hospitals where such elections occurred and hospitals where no such elections had occurred in the State of Texas. An overview of the development of hospitals and the union movement in hospitals are presented as background information for this study. Further, a brief discourse on attitude development and attitude measurement is provided as theoretical foundational material. A researcher-constructed questionnaire was devised, tested, and administered to employees of the subject hospitals. There were 176 useable returns from employees where no union representation election occurred and 176 useable returns from employees where union representation elections occurred.
Date:
August 1981
Creator:
Duvall, Wallace L. (Wallace Lee), 1926-
System:
The UNT Digital Library
Jamesian Women: A Readers Theatre Adaptation from Selected Novels of Henry James
The purpose of this study is to illustrate the power image of Henry James's female protagonists through a Readers Theatre adaptation of his novels, Daisy Miller, The Wings of the Dove, and The Portrait of a Lady. Chapter I includes an introduction and defines the purpose of the thesis. Chapter II briefly examines biographical information on James. Chapter III includes the analysis of the three selected novels in relation to preparation of a performance based script for Readers Theatre. In the Appendix is the Readers Theatre script with the inclusive transition and introductory material. The illustration of a typical Jamesian woman reveals a philosophic view of the human possibilities in freedom, power, and the destructive elements that limit an independent spirit.
Date:
August 1975
Creator:
Wicker, Patricia Elizabeth Frazier
System:
The UNT Digital Library
The Role of the Vice-Chancellor in the Nigerian University and the Factors Essential for Effective Administration as Perceived by Vice-Chancellors and Members of University Governing Councils in Nigeria
Access:
Use of this item is restricted to the UNT Community
The purposes of this study were to determine 1) the tasks that the Nigerian university vice-chancellor should perform personally, 2) the functions that the vice-chancellor should delegate to other university staff to achieve effective administration, 3) the factors that should be considered in the selection of a vice-chancellor, and 4) the criteria that should be considered in the evaluation of the vice-chancellor's job performance effectiveness. Chapter 1 includes a statement of the problem, purposes, research questions, background, significance of the study, definition of terms, limitations of the study, and basic assumptions. Chapter II is a review of related literature, and Chapter III presents information on the procedure followed in the collection and treatment of data. The analysis and evaluation of the findings are presented in Chapter IV; and the summary, findings, implications, and recommendations of the study are presented in Chapter V.
Date:
December 1985
Creator:
Ugwonali, Felix Chima
System:
The UNT Digital Library
A Study of Administrative Leadership Styles of the Senior Administrators of Public Universities in Texas
The study of leadership in education, business, industry, government, and other organizations has evolved over time. Early studies focused on leadership traits and behavior. Currently, researchers and theorists have concentrated on the interaction of leadership styles and situations. The primary purpose of this study was to determine the predominant leadership style of a group of senior administrators of public universities in Texas.
Date:
December 1991
Creator:
Nwafor, Samuel Okechukwu
System:
The UNT Digital Library
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 …
Date:
May 2006
Creator:
Roth, Elaine Grannan
System:
The UNT Digital Library
Needs Assessment: Analysis of Institutional Cocurricular Goals, Objectives, Programs, and Activities and Determination of Needs of International Graduate Students at North Texas State University
The problem of this study was to analyze institutional cocurricular goals, objectives, programs, and activities and determine institutional cocurricular needs of international graduate students at North Texas State University. The purposes and objectives of this study were twofold: first, to explore the differences between perceived and desired institutional cocurricular goals, objectives, programs, and activities and, second, to analyze and interpret the data from two different positions, "perceived as existing" and "should be existing."
Date:
August 1983
Creator:
Kamalamma, Shodavaram
System:
The UNT Digital Library
Thermo-Mechanical Processing and Advanced Charecterization of NiTi and NiTiHf Shape Memory Alloys
Shape memory alloys (SMAs) represent a revolutionary class of active materials that can spontaneously generate strain based on an environmental input, such as temperature or stress. SMAs can provide potential solutions to many of today's engineering problems due to their compact form, high energy densities, and multifunctional capabilities. While many applications in the biomedical, aerospace, automotive, and defense industries have already been investigated and realized for nickel-titanium (NiTi) based SMAs, the effects of controlling and designing the microstructure through processing (i.e. extreme cold working) have not been well understood. Current Ni-Ti based SMAs could be improved upon by increasing their work output, improving dimensional stability, preventing accidental actuation, and reducing strain localization. Additionally, there is a strong need to increase the transformation temperature above 115 °C, the current limit for NiTi and is especially important for aerospace applications. Previous research has shown that the addition on ternary elements such as Au, Hf, Pd, Pt, and Zr to NiTi can greatly increase these transformation temperatures. However, there are several limiting factors with these ternary additions such as increased cost, especially with Au, Pd, and Pt, as well as, difficulty in conventionally processing these alloys. Therefore, the main objectives of this research …
Date:
May 2020
Creator:
Ley, Nathan A
System:
The UNT Digital Library
The Relationship Between Environmental Barriers and Modes of Technology Transfer: A Study of United States Companies with Operations in Mexico
This study is an empirical evaluation of the relationship between perceptions of the elements of the remote environment of business and the mode of transfer utilized by 90 United States companies transferring technology to Mexico. Characteristics of the technology, the company, and the industry were found, from a thorough search of the literature, to be the key aspects of technology transfer. The primary hypothesis predicted that a significant relationship would exist between perceptions of barriers and choice of transfer mode.
Date:
August 1994
Creator:
LeMaster, Jane
System:
The UNT Digital Library
Comparison of the rate constants for energy transfer in the light-harvesting protein, C-phycocyanin, calculated from Foerster`s theory and experimentally measured by time-resolved fluorescence spectroscopy
We have measured and assigned rate constants for energy transfer between chromophores in the light-harvesting protein C-phycocyanin (PC), in the monomeric and trimeric aggregation states, isolated from Synechococcus sp. PCC 7002. In order to compare the measured rate constants with those predicted by Fdrster`s theory of inductive resonance in the weak coupling limit, we have experimentally resolved several properties of the three chromophore types ({beta}{sub 155} {alpha}{sub 84}, {beta}{sub 84}) found in PC monomers, including absorption and fluorescence spectra, extinction coefficients, fluorescence quantum yields, and fluorescence lifetimes. The cpcB/C155S mutant, whose PC is missing the {beta}{sub 155} chromophore, was, useful in effecting the resolution of the chromophore properties and in assigning the experimentally observed rate constants for energy transfer to specific pathways.
Date:
May 1, 1994
Creator:
Debreczeny, M. P.
System:
The UNT Digital Library
Online Testing of Context-Aware Android Applications
This dissertation presents novel approaches to test context aware applications that suffer from a cost prohibitive number of context and GUI events and event combinations. The contributions of this work to test context aware applications under test include: (1) a real-world context events dataset from 82 Android users over a 30-day period, (2) applications of Markov models, Closed Sequential Pattern Mining (CloSPAN), Deep Neural Networks- Long Short Term Memory (LSTM) and Gated Recurrent Units (GRU), and Conditional Random Fields (CRF) applied to predict context patterns, (3) data driven test case generation techniques that insert events at the beginning of each test case in a round-robin manner, iterate through multiple context events at the beginning of each test case in a round-robin manner, and interleave real-world context event sequences and GUI events, and (4) systematically interleaving context with a combinatorial-based approach. The results of our empirical studies indicate (1) CRF outperforms other models thereby predicting context events with F1 score of about 60% for our dataset, (2) the ISFreqOne that iterates over context events at the beginning of each test case in a round-robin manner as well as interleaves real-world context event sequences and GUI events at an interval one achieves …
Date:
December 2021
Creator:
Piparia, Shraddha
System:
The UNT Digital Library
An Empirical Investigation of the Impact of Cognitive Complexity and Experience of Programmers, and Program Complexity on Program Comprehension and Modification
The psychological characteristics of programmers are believed to be important determinants of programming productivity. However, little evidence is available to support this contention. This investigation, motivated by the lack of such evidence, was concerned with determining the influence of the programmer's cognitive complexity (differentiation and integration) and experience on comprehending and modifying programs of different levels of complexity. Data were collected from ninty-three graduate and undergraduate students in a classroom experimental setting. In the first phase of the experiment, a background questionnaire was administered in order to collect experience and other demographic information. Also, a domain-specific Role Construct Repertory (REP) Test was administered to collect cognitive complexity information. In the second phase, the subjects were randomly assigned to either the program comprehension group or to the program modification group. Both groups used two COBOL programs of differing levels of complexity to do comprehension and modification exercises. Three sets of hypotheses were tested. The first set of hypotheses was designed to evaluate the direction and strength of the relationship between cognitive complexity and program comprehension and modification. The second set of hypotheses was designed to evaluate the combined influence of cognitive complexity and program complexity on the comprehension and modification of …
Date:
May 1986
Creator:
Khalil, Omar Elnadi M.
System:
The UNT Digital Library
Improving the Definition of Exercise Maintenance: Evaluation of Concepts Related to Adherence
Physical activity has been demonstrated in the literature as an effective way to reduce the risk for development of chronic disease. The Transtheoretical Model (TTM) of behavior change has been developed as a means to predict and facilitate movement into healthier lifestyle behaviors. The model is centered on "stages of change", which describe a continuum of readiness to engage in a health behavior change. Stages contain temporal, qualitative, and quantitative characteristics. This was a six-month study that evaluated the effectiveness of stage-matched (theorized to be pertaining only to the maintenance stage of change) vs. generic (theorized to be pertaining to anyone, regardless of stage) newsletters in assisting subjects to attain the Maintenance stage of change. It also sought to identify further qualitative characteristics that can differentiate between the Action and Maintenance stages of change. Results indicated that monthly stage-matched newsletters were no more effective in helping subjects reaching Maintenance than were the generic newsletters. Exerciser self-schema was related to stages of change, but those relationships differed from baseline to six-month follow-up, indicating development of exerciser self-schema during the study period. Implications of this are discussed. Other concepts discussed included "structure" of change process, in that three new scores were developed …
Date:
August 2002
Creator:
Wilcox, Susan E.
System:
The UNT Digital Library
MECHANISMS OF AGING IN RELATIONSHIP TO STEROID BIOTRANSFORMATIONS AND THIOBARBITURIC ACID REACTIVE MATERIAL IN RAT TESTICULAR TISSUE IN VITRO.
None
Date:
January 1, 1969
Creator:
Baptista, M.H.
System:
The UNT Digital Library
Biodegradable Poly(hydroxy Butyrate-co-valerate) Nanocomposites And Blends With Poly(butylene Adipate-co-terephthalate) For Sensor Applications
The utilization of biodegradable polymers is critical for developing “cradle to cradle” mindset with ecological, social and economic consequences. Poly(hydroxy butyrate-co-valerate) (PHBV) shows significant potential for many applications with a polypropylene equivalent mechanical performance. However, it has limitations including high crystallinity, brittleness, small processing window, etc. which need to be overcome before converting them into useful products. Further the development of biodegradable strain sensing polymer sensors for structural health monitoring has been a growing need. In this dissertation I utilize carbon nanotubes as a self sensing dispersed nanofiller. The impact of its addition on PHBV and a blend of PHBV with poly(butylene adipate-co-terephthalate) (PBAT) polymer was examined. Nanocomposites and blends of PHBV, PBAT, and MWCNTs were prepared by melt-blending. The effect of MWCNTs on PHBV crystallinity, crystalline phase, quasi-static and dynamic mechanical property was studied concurrently with piezoresistive response. In PHBV/PBAT blends a rare phenomenon of melting point elevation by the addition of low melting point PBAT was observed. The blends of these two semicrystalline aliphatic and aromatic polyesters were investigated by using differential scanning calorimetry, small angle X-ray scattering, dynamic mechanical analysis, surface energy measurement by contact angle method, polarized optical and scanning electron microscopy, and rheology. The study …
Date:
December 2011
Creator:
Vidhate, Shailesh
System:
The UNT Digital Library
Measurement of cross-section (p anti-p --> Z0) x BF (Z0 --> tau anti-tau) at s**(1/2) = 1.96-TeV using the D0 detector at the Tevatron
In this thesis the first measurement of {sigma}(p{bar p}) {yields} Z{sup 0} {yields} {tau}{bar {tau}} with the D0 detector at the Tevatron is presented. The tau pair candidates are recorded by the D0 detector using p{bar p} interactions at a center-of-mass energy of 1.96 TeV. Events in which one tau decays into a muon and the other tau final state is hadronic with one charged particle are selected for this analysis. The selection criteria for the hadronic tau decay are based on the tau final state, hence for two channels of one-prong taus: single charged pion ({tau}{sub {pi}}) and rho decays ({tau}{sub {rho}}). The selection is based on simple cuts on a number of discriminating variables and the cut values have been optimized for the best cross section measurement. Of hadronic tau candidates that have been reconstructed as {tau}{sub {pi}} candidates, 0.801 {+-} 0.017 {+-} 0.066 pass the selection cut; in the case of {tau}{sub {rho}} taus, the selection efficiency is 0.676 {+-} 0.009 {+-} 0.009. Of all QCD jets that are reconstructed as hadronic tau candidates, 0.0093 {+-} 0.0002 pass the {tau}{sub {pi}} selection cuts and 0.0122 {+-} 0.0002 the {tau}{sub {rho}} cuts. The cross section has been measured …
Date:
April 1, 2004
Creator:
Duensing, Silke & U., /Nijmegen
System:
The UNT Digital Library
WW production cross section measurement and limits on anomalous trilinear gauge couplings at sqrt(s) = 1.96-TeV
The cross section for WW production is measured and limits on anomalous WW{gamma} and WWZ trilinear gauge couplings are set using WW {yields} ee/e{mu}/{mu}{mu} events collected by the Run II D0 detector at the Fermilab Tevatron Collider corresponding to 1 fb{sup -1} of integrated luminosity at {radical}s = 1.96 TeV. Across the three final states, 108 candidate events are observed with 40.8 {+-} 3.8 total background expected, consistent with {sigma}(p{bar p} {yields} WW) = 11.6 {+-} 1.8(stat) {+-} 0.7(syst) {+-} 0.7(lumi) pb. Using a set of SU(2){sub L} {direct_product} U(1){sub Y} conserving constraints, the one-dimensional 95% C.L. limits on trilinear gauge couplings are -0.63 < {Delta}{kappa}{sub {gamma}} < 0.99, -0.15 < {lambda}{sub {gamma}} < 0.19, and -0.14 < {Delta}g{sub 1}{sup Z} < 0.34.
Date:
April 1, 2008
Creator:
Cooke, Michael P. & U., /Rice
System:
The UNT Digital Library
Measurement of the Z/Gamma* (--> e+e-) + >=n Jet Production Cross Sections
A study of events with Z={gamma}* bosons and hadronic jets produced at the Tevatron in p{bar p} collisions at a center of mass energy of 1.96 TeV is presented. The data consist of approximately 14,000 Z/{gamma}* {yields} e{sup +}e{sup -} decay candidates from 343 pb{sup -1} of integrated luminosity collected with the D0 detector. Cross sections and jet production properties have been measured for Z/{gamma}* + {ge} 0 to 5 jet events. This measurement represents a significant improvement over previous measurements at the Tevatron, and it is the first at this center of mass energy with the D0 detector. The results are in good agreement with QCD predictions.
Date:
July 1, 2005
Creator:
Buehler, Marc
System:
The UNT Digital Library
The Effect of Online Consumer Reviews and Brand Equity on the Consumer Decision Making Process
This research aims to investigate the (1) review effects on consumer decision making process, (2) effects of negative reviews on brand equity, and (3) consumers' likely response to a brand's request for reviews. The objective of the first essay is to investigate the nature of the relationship between skepticism and consumer decision making in an online behavior context. Its second objective is to know whether people's belief on their abilities or their hedonic principle moderates the relationship between a person's skepticism toward online reviews and their reliance on online reviews. The objective of the second essay is to explore whether negative online reviews that focus on service quality specific dimensions have a different effect on a service organization's perceived brand equity. Its second objective is to analyze the role of emotional contagion in the relationship between negative reviews related to various service quality dimensions and its effect on perceived brand equity. The main objective of the third essay is to know whether consumers are more likely to write an online review for a brand when the request comes from a higher equity brand. This essay also investigates how message trust and persuasion knowledge influence the relationship between a brand's request …
Date:
December 2021
Creator:
Ahmad, Fayez
System:
The UNT Digital Library
Supportive Conditions for the Successful Development of Ninth-Grade Centers
The transition from middle school to high school can be challenging for some students. Many school districts are implementing practices to ease the transition to high school. The current study examined one school district's practices and procedures for the development and implementation of a ninth-grade center. In this study, I examined the perceptions of 12 participants (teachers, counselors, and campus and district administrators) in a suburban Texas school district with a ninth-grade center. Using a qualitative descriptive case study methodology, data were collected and analyzed from face-to-face in-depth interviews and a focus group. The findings revealed an overall positive view of ninth-grade centers and a generally favorable impression of separating ninth graders from the remainder of the high school student body, to focus specifically on ninth graders' unique and individual needs. There were some identified concerns related to communication and logistical issues between the ninth-grade center and the main high school campus. From participant feedback, effective campus leadership, providing engaging and ongoing professional learning, having a separate facility, and creating a sense of team through building strong relationships are the specific top four elements that are most effective in developing a ninth-grade center. While this study provides a practical set …
Date:
May 2020
Creator:
Hunt, Bradley Allen
System:
The UNT Digital Library
Study of the S-wave K(pi) --> Amplitude Using the Decay D+ --> K-pi+pi+
In this work the S-wave component of the K{pi} amplitude from decay of D{sup +} {yields} K{sup -}{pi}{sup +}{pi}{sup +} it is directly measured. The data come from the Fermilab E831/FOCUS experiment. The amplitude measurement is made using the partial wave analysis without any preliminary assumption about the nature of the S-wave component of the K{pi} system. The phase and magnitude of the S-wave amplitude are generic functions to be determined directly through the Dalitz plot fit. For the sake of comparison, our results the same decay is analyzed using the isobar model, which is the standard way to analyze the Dalitz plot. The data fit obtained with the partial wave analysis is better than the data fit from the isobar model. The phase variation with respect to the invariant mass K{pi} is compared with the measurement of the phase {delta}{sub I=1/2}{sup 0} (m{sub K{pi}}) from K{pi} {yields} K{pi} scattering. The difference between both analysis is discussed considering: a difference in the composition of the isospin components I = 1/2 and I = 3/2 of the K{pi} system between D{sup +} decay and the K{pi} {yields} K{pi} scattering; and the final state interaction involving all particles from decay.
Date:
February 1, 2007
Creator:
Machado, Ana Amelia Bergamini
System:
The UNT Digital Library
Impact of Child-centered Group Play Therapy on Social-emotional Assets of Kindergarten Children
Early childhood is a critical period during which children develop social-emotional competence that will affect future success. Developing social-emotional assets is of importance for kindergarten children because of their concurrent cognitive and social changes as well as the experience of transitioning from home to school environment. A growing number of schools have adopted social-emotional learning (SEL) programming to focus on fostering children’s prosocial behaviors through direct instruction and engaging activities in classroom settings. However, some researchers have proposed that learning should capitalize on children’s natural interests rather than adult-determined agendas. Based on theoretical assumptions regarding potential effectiveness of child-centered group play therapy (CCGPT) as a treatment modality, I sought to explore the effects of CCGPT on social-emotional assets of kindergarten children utilizing parent and teacher reports across pretest, posttest, and one-month follow-up. Additionally, given that group sizes have been inconsistent and rarely explored across previous studies, I investigated the therapeutic aspect of group sizes in CCGPT outcome by comparing 2-member and 3-member CCGPT groups. Forty-three participants with mean age of 5.14 were recruited from three elementary schools, including 19 Hispanic, 14 Caucasian, and 10 African American. Twenty-one participants were randomly assigned to the intervention group receiving a mean of 15.32 …
Date:
August 2015
Creator:
Cheng, Yi-Ju
System:
The UNT Digital Library
All for the Greater Good: A Strategic, Tactical, and Operational Level Analysis of Supply Chain Goal and Incentive Alignment
Goal and incentive alignment are a means of establishing collaborative behavior in supply chains. Essay 1 examines goal and incentive alignment at the strategic level in the purchasing process. It employs survey research in conjunction with structural equation modelling to examine the source selection strategy as a means of aligning the goals of the offeror with those of the buyer. Essay 2 examines goal and incentive alignment at the tactical level. It uses discrete event simulation to explore how the pursuit of localized profit objectives affects the global profitability of a supply chain. Lastly, Essay 3 examines goal and incentive alignment at the operational level. By employing a hybrid simulation approach to model a complex product refurbishment process, this research demonstrates that evaluating subprocesses based solely on their throughput does not equate to greater cost savings for the company at the focal point of this case study. These essays contribute to the body of knowledge in several ways. To the best of the author's knowledge, Essay 1 demonstrates the first empirical linkage, in the realm of public procurement, between the fear of a bid protest and the appropriateness of the sourcing strategy. Similarly, Essay 2 represents the first adaptation of …
Date:
July 2023
Creator:
McConville, Sean Cask
System:
The UNT Digital Library
Fiber, Fabric, Art
The problem addressed in this paper was the appropriateness of fiber, especially in the form of fabric, as an art medium. Relevant statements by crafts makers, philosophers, art critics, and artists were investigated along with historical and contemporary art and craft works.
Date:
May 1984
Creator:
Dishongh, Suzanne
System:
The UNT Digital Library