Effects of Water Quality, Instream Toxicity, and Habitat Variability on Fish Assemblages in the Trinity River, Texas (open access)

Effects of Water Quality, Instream Toxicity, and Habitat Variability on Fish Assemblages in the Trinity River, Texas

The Trinity River flows through the Dallas-Ft. Worth Metroplex in north central Texas where it receives effluents from numerous point sources including seven large regional wastewater treatment facilities. Historically, the Trinity River has been impacted by massive wastewater loadings which often constitute > 80% of the total river discharge during low flow periods. Normally, high mass loadings correspond to the summer months, compounding the effects of a naturally stressful period, characterized by high temperatures and low dissolved oxygen concentrations. Samples from 12 stations were collected quarterly over an 18 month period from the Trinity River and two tributaries. Water samples were analyzed for a variety of water quality variables, including metals, priority pollutants, pesticides, and general water quality parameters. Water samples were also tested for acute and subchronic effects with several test species. Fish were collected at each station and assemblages were characterized using traditional classification techniques and the Index of Biotic Integrity. In addition, sediment samples were assessed for toxic effects which could have adversely impacted fish recruitment and in situ biomonitoring experiments were performed. Quantitative habitat characterization analyses were performed to gain additional information that could possibly explains differences in fish assemblage structure related to habitat variability. Data …
Date: December 1989
Creator: Arnold, Winfred R., 1960-
System: The UNT Digital Library
Factors of Depression in the Elderly: Assessment and Implications for Diagnosis (open access)

Factors of Depression in the Elderly: Assessment and Implications for Diagnosis

The problem of assessment and diagnosis of depression in the elderly begins with the definition of depression being indefinite. In this study, the theory of learned helplessness was chosen because of its value in organizing research within a learning theory framework. The Beck Depression Inventory, measures of fluid and crystallized intellectual ability, locus of control, and attribution of success and failure were chosen as variables for an exploratory factor analysis. The purpose of selecting these variables was to assess the cognitive, motivational, and affective components of learned helplessness as they affected the responses of elderly subjects to depression items. Self report measures of income, education, and health, were included to assess the relationship of these variables to depression. A somatic factor was predicted to correlate with an affective factor of depression.
Date: December 1987
Creator: Kunsak, Nancy Elizabeth
System: The UNT Digital Library
Management Stress: A Correlational Study of Pragmatic Factors Relating to Educational Administrators (open access)

Management Stress: A Correlational Study of Pragmatic Factors Relating to Educational Administrators

This study provided administrators in a large southern metropolitan public school district an opportunity to participate in a stress-related research study. The questionnaire contained such stress-related probe areas as spiritual beliefs, preferred and imposed (perceived) orders of major-life emphasis areas, professional environment, personal-social environment, and probes into the ethical positions held by the administrators. The professional environment section contained subsets of internal (on-the-job) probes, external (political) probes, as well as personal (incentive) probes.The personal-social environment section was sub-divided into five Maslow hierarchy-of-need related probes such as physiological needs, safety-security needs, social needs, esteem needs, and self-fulfillment needs. The final section of the instrument sampled the administrators' responses to probes concerning their concepts of God, their concepts of the Bible arid their positions on eight ethical statements.
Date: December 1980
Creator: Lawson, Lewis
System: The UNT Digital Library
The Perceptions of Teacher-Coordinators and Employers of Senior Cooperative Students as to the Role of the Employer in the Fort Worth Independent School District's Vocational Office Education Program (open access)

The Perceptions of Teacher-Coordinators and Employers of Senior Cooperative Students as to the Role of the Employer in the Fort Worth Independent School District's Vocational Office Education Program

The problem of this investigation was to clarify the responsibilities of the employer participating in the VOE program. Three major purposes were stated: (1) to determine the role expectations of employers of VOE students as perceived by employers participating in the program; (2) to determine the role expectations of employers as perceived by the VOE teacher-coordinators; and, (3) to determine if any significant differences existed between the employer perceptions and those of the teacher-coordinators. To obtain information, questionnaires were sent to a random sample of fifty employers participating in the VOE program during the 1983-84 school year. An identical survey instrument was administered to thirty VOE teacher-coordinators in Fort Worth. A Chi-square test of independence was applied to the data to test the hypotheses, with the .05 level used as the point of rejection. Of the seventeen surveyed possible role functions addressed, a majority of the employers responded positively to sixteen, were undecided about one, and responded negatively to none. A majority of the teacher-coordinators responded positively to eleven, were undecided about six, and responded negatively to none. One significant difference existed between the employer perceptions and those of the teacher-coordinators concerning one training responsibility which resulted in the rejection …
Date: December 1984
Creator: Collet, Terry A.
System: The UNT Digital Library
An Empirical Investigation of the Potential Use of Data Required by FASB Statement No. 33 by Financial Analysts in the Dallas/Fort Worth and Houston Regions (open access)

An Empirical Investigation of the Potential Use of Data Required by FASB Statement No. 33 by Financial Analysts in the Dallas/Fort Worth and Houston Regions

In September, 1979, the Financial Accounting Standards Board issued FASB Statement No. 33, which required certain corporations to issue specified supplementary information based on constant dollars and current costs. This information is intended to show the impact of inflation on the reported earnings and capital of business enterprises. Opponents of Statement No. 33 claim that the required supplementary information is difficult to interpret and, therefore, will not be used. Proponents contend that the information is self-explanatory and would highlight the impact of inflation on the performance of business enterprises. Thus, they conclude the supplementary data will be useful to various user groups and will be used. This dissertation's primary objective was to determine whether the supplementary data will be used by financial analysts in the Dallas/Fort Worth and Houston regions in evaluating an enterprise's operating performance and its ability to maintain physical operating capability and the general purchasing power of financial capital.
Date: December 1980
Creator: Tondkar, Rasoul H.
System: The UNT Digital Library
An Analysis of Enrollment Patterns in Required General Education Courses and the Related Success, as Measured by Grade Point Average, of Technical-Occupational Students in a Multi-Campus Urban Community College (open access)

An Analysis of Enrollment Patterns in Required General Education Courses and the Related Success, as Measured by Grade Point Average, of Technical-Occupational Students in a Multi-Campus Urban Community College

This study investigated the following with regard to technical-occupational students in a multi-campus urban community college: The enrollment patterns in required general education courses at specific intervals of course work; the relation between successful completion of certain required general education courses (English and mathematics) and academic success as measured by grade point average; and the profiles or basic characteristics (age, GPA, sex, and high school graduation status) of (a) the student who had completed a specified amount of general education course work and (b) the graduate who had attained a higher grade point average in technical course work than in general education course work. The data was obtained from the academic records of 328 current student, selected by established criteria, and 284 graduates of six technical-occupational programs. The six programs were chosen by pairs to represent white-collar, technical-skilled, and blue-collar oriented occupations. Data on enrollment patterns were analyzed according to percentage in frequency distributions. Differences in mean grade point averages for completers and non-completers of English and mathematics were analyzed using the t-test. Significant variance among the groups representing types of occupations was analyzed using the chi-square test for independence. The Pearson Product Moment test was used to investigate correlations …
Date: December 1988
Creator: Hines, Linda Kay, 1942-
System: The UNT Digital Library
Total Stress Load Inventory: A Validation Study (open access)

Total Stress Load Inventory: A Validation Study

The purpose of this study was to validate a stress inventory which would differentiate between a normative group and a patient population suffering from environmental illness. The hypotheses of this study were: (1) the Total Stress Load Inventory would be predictive in discriminating between clinical ecology patients and a normative group; (2) each section or subscale of the Total Stress Load Inventory would be predictive of psychological, cognitive, nutritional, and/or medical factors.
Date: December 1986
Creator: Sherck-O'Connor, Robin
System: The UNT Digital Library
Ability Grouping in College Beginning Media Writing Classes (open access)

Ability Grouping in College Beginning Media Writing Classes

The problem with which this investigation is concerned is that students of unequal writing ability are frequently placed in the same beginning media writing classes in college journalism. It is difficult for a teacher to be effective when the ability of the students ranges from those who cannot write clear complete sentences to others whose work already appears in newspapers and magazines. The purpose of this study is to determine whether students who are ability grouped into slow—average and advanced groups do the same, better, or worse than heterogeneously grouped students. In the spring semester of 1987, students in Journalism 1345, Media Writing laboratory, at the University of Texas at Arlington, were given a pretest to determine how well they wrote a simple news story and a simple feature story. On the basis of that test, which was graded by three raters, the students were placed in two separate ability groups in three classes. The fourth class contained students with heterogeneous abilities who were not placed in groups. At the end of the semester a posttest was given in news and feature writing. A two-way analysis of variance was used to analyze the posttest scores of sixty-seven students. There was …
Date: December 1987
Creator: Haber, Marian Wynne
System: The UNT Digital Library
Incidence and Components of Industrial Mental Health Services in The Dallas-Fort Worth Metroplex (open access)

Incidence and Components of Industrial Mental Health Services in The Dallas-Fort Worth Metroplex

Between June and August, 1983, a postal survey was conducted to gather information on industrial mental health programs in mid-sized corporations in the Dallas-Fort Worth Metroplex. The sample included all companies listed in Standard and Poor's Register of Corporations, Directors, and Executives (1982) with an employee population of 500 to 2,000. Approximately 27% of the responding corporations indicated that they had formal existing industrial mental health programs. The responses indicated that the majority of formal industrial mental health programs were located in banking, insurance, high technology, media, and professional enterprises. The relationship between the size of companies and the provision of services was curvilinear.
Date: December 1984
Creator: Strickler, Donald J. (Donald Joseph)
System: The UNT Digital Library
The Sociological Factors Associated with the Career Development of Women Theological Graduates (open access)

The Sociological Factors Associated with the Career Development of Women Theological Graduates

Because it is representative of other Southern Baptist seminaries and distinguished by a vigorous graduate program, Southwestern Baptist Theological Seminary (SWBTS) was chosen as the institution from which the population was taken. The study, conducted in 1984, collected data about women graduates of SWBTS for the years 1975, 1978, and 1981, with the following purposes: (1) to develop a profile of women who choose seminary education as an avenue of career preparation; (2) to determine the degree of influence of significant others --individuals in the family, school, peer group, and the church -- on women pursuing graduate education in order to prepare for ministry vocations. Among the findings of the study are these observations: 1. Despite a consistently supportive role from church pastors about respondents' career choices before, during, and after seminary, few seminary graduates encountered clergywomen as role models, or received material support from their home churches, and many encountered gender bias and discrimination as they sought ministry-related careers throughout their educational careers and afterwards. 2. The most desired career choices expressed by respondents include missionary, age group minister, counselor, minister of education, and college or seminary teacher. 3. The least desired career choices of respondents include minister of …
Date: December 1988
Creator: Kimberling, Cheryl Gray
System: The UNT Digital Library