Partner
Collection
Texas Digital Newspaper Program
307
UNT Theses and Dissertations
259
Texas Borderlands Newspaper Collection
104
Texas Jewish Herald /Jewish Herald /Jewish Herald-Voice
54
Hudspeth County Area Newspaper Collection
52
Texas Jewish Post
52
The Penny Record
52
Tocker Foundation Grant
52
Texas Catholic Newspaper Collection
45
Texas Gulf Coast Register/South Texas Catholic
45
10 More
Serial/Series Title
Degree Department
Degree Discipline
Degree Level
Country
States
Year
Month
Language
Results:
1 - 24 of
651
next
Southwest Retort, Volume 44, Number [8], November 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
November 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume [44], Number [1], January 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
January 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 2, February 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
February 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 4, April 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
April 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 5, May 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
May 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [9], December 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
December 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [6], September 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
September 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number [7], October 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
October 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Southwest Retort, Volume 44, Number 3, March 1990
This publication of the Dallas-Fort Worth Section of the American Chemical Society includes information about research, prominent scientist, organizational business, and various other stories of interest to the community.
Date:
March 1990
Creator:
American Chemical Society. Dallas/Fort Worth Section.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
How Healthy is the Upper Trinity River?: Biological and Water Quality Perspectives
This conference report contains discussions and papers from a symposium hosted at Texas Christian University, in Fort Worth, Texas, examining the ecological health of the Upper Trinity River, and the impacts of various human activity, such as agriculture, urbanization, and waste management. The papers cover the effect of water quality on urban rivers, long-term water quality trends in the Trinity River, solutions that may improve water quality in the river, as well as biological, agricultural and waste-water issues.
Date:
1990
Creator:
Jensen, Ric
Object Type:
Book
System:
The UNT Digital Library
A Monte Carlo Study of the Robustness and Power Associated with Selected Tests of Variance Equality when Distributions are Non-Normal and Dissimilar in Form
When selecting a method for testing variance equality, a researcher should select a method which is robust to distribution non-normality and dissimilarity. The method should also possess sufficient power to ascertain departures from the equal variance hypothesis. This Monte Carlo study examined the robustness and power of five tests of variance equality under specific conditions. The tests examined included one procedure proposed by O'Brien (1978), two by O'Brien (1979), and two by Conover, Johnson, and Johnson (1981). Specific conditions included assorted combinations of the following factors: k=2 and k=3 groups, normal and non-normal distributional forms, similar and dissimilar distributional forms, and equal and unequal sample sizes. Under the k=2 group condition, a total of 180 combinations were examined. A total of 54 combinations were examined under the k=3 group condition. The Type I error rates and statistical power estimates were based upon 1000 replications in each combination examined. Results of this study suggest that when sample sizes are relatively large, all five procedures are robust to distribution non-normality and dissimilarity, as well as being sufficiently powerful.
Date:
August 1990
Creator:
Hardy, James C. (James Clifford)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Elder Abuse: Education for Persons with Experienced Violence
The rationale for this study was based on the application of the cycle of domestic violence theory to elder abuse. It examined the effect of history of experienced childhood violence on tolerance, behavioral intentions, and past behaviors of elder abuse toward general and specific elderly targets. The effectiveness of educational interventions for altering tolerance and behavioral intentions of elder abuse was examined. Two hundred and twenty-five undergraduates were assessed for aging knowledge, general aging attitudes, aging anxiety, elder abuse attitudes, and elder abuse intentions and past behaviors. Participants were assigned to a High or Low Experienced Violence group and participated in an educational group or control group. Posttest and one-month followup measures were obtained. No differences were found at pretest between High and Low Violence. Level of Violence did not impact intervention efficacy. Elder abuse education altered attitudes, intentions, and behaviors of elder abuse at posttest significantly more than did aging education or control groups (p < .001), but these effects were no longer significant at followup. Elder abuse attitudes had higher relationships with elder abuse intentions and reported past behaviors than did global aging attitudes or aging anxiety (p < .05). General elderly targets yielded more tolerance, intentions, and …
Date:
August 1990
Creator:
Reinberg, Julie A. (Julie Ann)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Alzheimer's Disease and Attention: An Investigation into the Initial Stage of Information Processing
This study explores the possibility that attentional deficits are an early clinical symptom of Alzheimer's disease. The three goals are to demonstrate that individuals with Alzheimer's disease are impaired on tasks of attentional processing, to compare the sensitivity of currently used measures of attention to attentional dysfunction, and to compare the behavioral response styles (errors of commission) of Alzheimer's disease subjects and non-impaired subjects. The subjects were 22 males and 46 females with a mean age of 70.76 years. Thirty-six had the presumptive diagnosis of Alzheimer's disease; 18 were identified as mildly impaired and 18 as moderately impaired on the Cognitive Capacity Screening Examination. The remaining 32 subjects comprised the non-impaired control group. Five measures of attention were administered to all participants: the Digit Span Subtest of the WAIS-R, the Seashore Rhythm Test of the Halstead-Reitan Neuropsychological Battery, the Vigilance and Distractibility tasks of the Gordon Diagnostic System, and the Concentration/Interference task. The results show a significant difference in attentional processing between normal (non-impaired) subjects and subjects diagnosed with Alzheimer's disease. All measures of attention used in this study, except the Concentration/Interference task, differentiated normal subjects from moderately impaired Alzheimer's disease subjects. The Digit Span Subtest and the Seashore Rhythm …
Date:
August 1990
Creator:
Houtz, Andrew W. (Andrew William)
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Descriptive Study of a Native African Mental Health Problem Known in Zimbabwe as zvirwere zvechivanhu
This is a study conducted in Zimbabwe which compared a group of 50 zvirvere zvechivanhu patients and a group of 50 non-patients in age, sex, marital status, level of education and claims of spirit possession. Claims of spirit possessions and types of spirits, as pointed out by Bennel (1982), were used as symptoms of zvirwere zvechivanhu. The two groups were also compared in symptom dimensions of the SCL-90-R used in the study. The SCL-90-R, developed by Derogatis (1975), is a 90-item symptom check list used to screen people for psychological problems reflected in the nine symptom dimensions of somatization, obsessive/ compulsive, interpersonal sensitivity, depression, anxiety, hostility, phobic anxiety, paranoid ideation, psychoticism and in the three global scores of Global Severity Index, Positive Symptom Distress Index and Positive Symptom Total. The subjects were chosen from two different sites, using a systematic sampling method. Three statistical methods were used to analyze the data. The Chi-square was used to analyze data on descriptive variables. The T-test and 2 x 2 analysis of variance were used to analyze the data on symptom dimensions and global scores. The study had one main hypothesis and nine subhypotheses. The main hypothesis was that zvirwere zvechivanhu patients were …
Date:
August 1990
Creator:
Mungadze, Jerry Jesphat
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Relaxation and Cognitive Therapy: Effects upon Patients' Abilities to Cope with a Stressful Medical Procedure
This investigation evaluated the efficacy of relaxation training and cognitive therapy separately and in combination in enhancing the coping skills of patients during epidural steroid injections. Subjects consisted of 80 back pain patients. They were randomly assigned to four groups to receive either relaxation training, cognitive therapy, relaxation and cognitive therapy, or attention control treatment. All subjects were provided preparatory information describing the procedure for the epidural injection and typical physical sensations experienced by patients undergoing the procedure. Relaxation training consisted of Jacobsonian progressive relaxation instructions which were modelled by the trainer. Cognitive therapy consisted of instructions and a work sheet designed to assist subjects in designing positive (rational) self statements concerning the injection procedure. Attention control procedures involved instructions and written exercises of equal duration to the relaxation and cognitive treatments but containing no instructions for the control of anxiety and pain. The three experimental groups exhibited significantly fewer "ae1f-distress" verbalizations during the injection. On other dependent measures, namely, the remaining catagories of pain verbalizations, gross body movements, heart rate, and independent ratings of anxiety there were no significant differences among experimental and control groups. Results are discussed in terms of spontaneous use of coping skills, habituation, individual differences …
Date:
August 1990
Creator:
Catalanello, Michael S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Methylglyoxal Effects on Cell Division of Scenedesmus quadricauda (Scenedesmaceae)
Cell division of ggeneflesmus quadricauda (Turp.) Breb. (Scenedesmaceae) is enhanced by methylglyoxal, a general inhibitor of cell division, at threshold concentration in conjunction with treatment timing related to growth stage of batch cultures. At 0.5 mM methylglyoxal concentration, cell division was significantly enhanced in algae treated in the logarithmic phase. Specific growth rates of methylglyoxal-treated cultures were rapidly increased at the beginning of logarithmic phase. Cultures inoculated with high cell numbers were less sensitive, but still showed high specific growth rates in logarithmic phase. Cell division in cultures which had low cell numbers was inhibited by 0.5 mM methylglyoxal treatment. Both specific activity of Glyoxalase I and the ratio of Glyoxalase I to Glyoxalase II of methylgloxal-treated cultures were higher than those of controls (1.3 and 2.1- fold, respectively). Pyruvate concentration in treated cultures was increased after methylglyoxal treatment.
Date:
August 1990
Creator:
Rhie, Kitae
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Marketing Strategies of the American Association of Bible Colleges Directed Toward Students with Nonreligious Vocational Goal
The primary purpose of this study was to determine the marketing strategies for attracting students who have nonreligious vocational goals (NRVG) that are employed by Bible colleges that are either accredited or candidates for accreditation of the American Association of Bible Colleges (AABC). Primary subpurposes were to determine the AABC's interest in marketing themselves.to NRVG; practice of educational marketing strategies toward NRVG; career planning programs and placement services available to NRVG; approaching employers with placement services for NRVG; making available seminars, placement services, and alumni networking for NRVG; and difference in marketing to NRVG according to a colleges' denomination, size, three year growth pattern, and estimated percentage of NRVG. An overview of the literature pertaining to educational marketing and marketing for a liberal arts education was given. The population chosen for this study was the accredited (87) and candidate for accreditation (15) Bible colleges of the AABC (102). Eighty (78.4%) colleges actually responded. The design of this study was survey research using a mailed questionnaire as the principal source of data collection. The statistics utilized were parametric (e.g., one-way analysis of variance and t test) and nonparametric (e.g., chi square). The results of the study indicated that AABC colleges were …
Date:
May 1990
Creator:
Kane, Michael J. (Michael James), 1953-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effect of the Conflict Between Instructional Leadership and Building Management Roles on Job Satisfaction of the Texas Public High School Principal
The problem of this study was the conflict perceived by Texas Public High School Principals involving two roles which have been described as contradictory in nature; namely as an instructional leader and as a building manager. This study was also concerned with the level of job satisfaction of the Texas Public High School Principal. 1,205 Texas Public High School Principals identified by the Texas Education Agency and University Interscholastic League were mailed a three part questionnaire survey. 700 principals (or 58.09% of the entire population) returned the completed surveys. The questionnaire "Demographic Survey for Texas Public High School Principals" consisted of eight questions. The thirty-four statement "Questionnaire for Texas High School Principals" allowed principals to provide their perceptions of the roles and responsibilities for their present position as well as an ideal position. The final questionnaire, the four question "Survey of Job Satisfaction", assessed the level of job satisfaction for each principal. Hypothesis one was analyzed with a one-way ANOVA to determine if principals differed in their perceptions of their job roles and job positions. These positions included both the present job position and a more desired or ideal job position. The differences in these positions resulted in conflict. Hypothesis …
Date:
August 1990
Creator:
Hulen, Chris Wendell
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Borrowing or Stealing: The Language and Moral Development of Criminals and Noncriminals
The present study was undertaken (1) to compare the connotative meanings criminals attach to a sampling of concepts with those meanings attached by noncriminals, and (2) to examine the possible relationship between moral development and criminal behavior. One hundred thirty four male subjects completed the Wide Range Achievement Test- Revised (Reading Section); a personal data sheet; the Ammons Quick Test-Form I; the Criminal Semantic Inventory; the Test for Criminal Cognitions; and the Sociomoral Reflection Questionnaire. Subjects were divided into four groups (Noncriminals, Against Person Group, Against Property Group, and Against Statute Group) on the basis of history of criminal conviction. A one-way MANOVA was conducted on each of the 16 concepts under investigation. Significant differences were found for five concepts. In addition, criminals were found to differ significantly from noncriminals on level of moral development.
Date:
August 1990
Creator:
Haynes, Linda Carol
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Differences in School Districts' Decision-Making Processes Before and After Tax Limitation Elections: A Case Study
Using a case study approach, this investigation focused on the decision-making processes involved in developing budgets in two Texas school districts following a tax limitation, or rollback, election. Factors influencing the decision-making processes included the rollback election's outcome in each district, the participants, the perceptions participants held of themselves, the perceptions participants held of others in the district and community, the decisions made, and the factors influencing participants' decisions. Two Texas school districts were selected as subjects of this study which used qualitative data collection methods. In one school district, the rollback election passed. In the other, it failed. Data collection included observations of school board meetings and budget workshops. Structured interviews of school board members and administrators, pro- and antirollback proponents, and newspaper editors were conducted. Questions focused on the budgetary decision-making processes before and after the rollback elections. They also solicited information fromsubjects regarding rollback elections, the factors precipitating the rollback elections and the impact of the rollback election campaign upon each school district. Document analyses were triangulated with the observations and interviews to identify the factors influencing the budgetary decision-making process. Following the rollback elections, school officials in both districts adopted a conservative approach to budgetary decision-making. …
Date:
May 1990
Creator:
Travis, Rosemary Fechner
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Racial Residential Segregation: Tracking Three Decades in a Single City
This study evaluated the relative association of socioeconomic, minority group and housing characteristics of census tracts with the racial composition of residential areas within one southwestern city between 1950 and 1980. The unit of analysis was the census tract; the data were taken from the U.S. Census of Population and Housing 1950-1980 for the Fort Worth, Texas SMSAs. The Index of Dissimilarity compared racial segregation in the Fort Worth urbanized area for blacks with all others (1950-1980) and for Spanish and non-black minorities with all others (1960-1980). The data show little change in the extent of residential segregation over 30 years. The multiple regression showed that the degree of segregation in census tracts became increasingly predictable based on past minority concentration in the same neighborhood. Lagged social status and minority group variables significantly predicted the percent of the population that was black or Spanish in census tracts ten years later. Beta weights for percent black or percent Spanish were always the strongest in each tract regression and largely determined the level of segregation that existed in tracts ten years later. This paper asserts that social status characteristics must approach more equal levels between minority and majority groups before integrated neighborhoods …
Date:
August 1990
Creator:
Clark, Marjorie, 1921-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Judgment of Contingency and the Cognitive Functioning of Clinical Depressives
Twenty-four psychiatric staff, 24 clinically depressed inpatients, and 24 nondepresssed schizophrenic patients at a state psychiatric facility completed five tasks under either reward or punishment conditions. Each task consisted of 30 trials of pressing or not pressing a button to make a light appear. Monetary reinforcement was contingent on light onset for the final ten trials of each task. Cash incentives for judgment of control accuracy were added for Tasks 3, 4, and 5. Cognitive functioning was evaluated on each task by measuring expectancy, judgment of control, evaluation of performance, and attribution. Mood and self- esteem were measured before and after the procedure. No significant differences were observed across mood groups for expectancy of control or judgment of control accuracy. Subject groups also did not differ in the attributions they made or in how successful they judged their performances to be. They set realistic, attainable criteria for success which were consistent with relevant conditional probabilities. Subjects in reward gave themselves more credit for task performance than subjects in punishment gave themselves blame for comparable performances. Punishment subjects demonstrated more stable, external attributions than those in reward. Across tasks, subjects overestimated when actual control was low and underestimated when actual control …
Date:
August 1990
Creator:
Cobbs, David Lee
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Optical Nonlinearities in Semiconductors for Limiting
I have conducted detailed experimental and theoretical studies of the nonlinear optical properties of semiconductor materials useful for optical limiting. I have constructed optical limiters utilizing two-photon absorption along with photogenerated carrier defocusing as well as the bound electronic nonlinearity using the semiconducting material ZnSe. I have optimized the focusing geometry to achieve a large dynamic range while maintaining a low limiting energy for the device. The ZnSe monolithic optical limiter has achieved a limiting energy as low as 13 nJ (corresponding to 300W peak power) and a dynamic range as large as 105 at 532 nm using psec pulses. Theoretical analysis showed that the ZnSe device has a broad-band response covering the wavelength range from 550 nm to 800 nm. Moreover, I found that existing theoretical models (e.g. the Auston model and the band-resonant model using Boltzmann statistics) adequately describe the photo-generated carriers refractive nonlinearity in ZnSe. Material nonlinear optical parameters, such as the two-photon absorption coefficient β_2=5.5cm/GW, the refraction per unit carrier density σ_n=-0.8∗10^-21cm^3 and the bound electronic refraction n_2=-4∗10^-11esu, have been measured via time-integrated beam distortion experiments in the near field. A numerical code has been written to simulate the beam distortion in order to extract the …
Date:
May 1990
Creator:
Wu, Yuan-Yen
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Academic Achievement of National Social Fraternity Pledges Compared to Non-Fraternity Students
This study examined the academic achievement of national social fraternity pledges compared to non-fraternity students at the University of Texas at Arlington. It was done to determine whether significant differences existed between the grade point averages of pledges of social fraternities and those of students who did not pledge a social fraternity, and to determine whether significant differences existed among fraternities when compared with each other with respect to academic achievement. This study was meant to provide a research design that could be used by other colleges and universities with fraternities to conduct the same comparison of academic performance. In the fall semester of 1989, 164 pledges were selected as the population for the study to be matched with non-fraternity students based on Scholastic Aptitude Test (SAT) scores, age, sex, classification, academic major, and number of hours attempted. A T-test of like groups was performed on the entire population with no significant difference found at the .05 level between all the fraternity pledges and all the matched pairs. A T-test of like groups was performed on the pledges from each separate organization and there was a significant difference among three of the fraternities. Two of the fraternities had significantly higher …
Date:
August 1990
Creator:
Gardner, Kent Lee
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library