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 …

This dissertation sought to determine the effects of a buddy system on a student's self-concept, academic achievement, attrition rate, and congruence levels. The buddy system treatment randomly paired two students for the purposes of sharing ideas, working on assignments, getting to know each other, and supporting one another. The study included three randomly selected sections of pre-college level, developmental writing classes from the Brookhaven College of the Dallas County Community College District. Three other classes served as the control group, and one instructor taught all six sections of the course. Three instruments were used as measures of change: the Tennessee Self-Concept Scale (TSCS), designed by William H. Fitts, measured self-concept levels; the Personality and Educational Environment Scale (PEES), created by Roger Boshier, measured congruence levels; and a written paragraph measured achievement levels in English. Attrition percentages were based on the number of students enrolled during the second week of class who were not present during the sixteenth week of class. To test for significance, an analysis of covariance procedure was used on the TSCS, PEES, and written paragraph results, and a test for the difference between proportions for independent groups was used on the attrition percentages. The class sections were …

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.

This study modified the Ramanujam and Venkatraman (1987) questionnaire that was used to develop their model of planning system dimensions and planning effectiveness, and tested the model on a sample of private social service agencies. The criterion measures were level of planning sophistication, agency size, perceived environmental uncertainty, and relative competitive position. The sample was randomly drawn from private social service agencies which were members of the Community Council of Greater Dallas. Telephone interviews with fifty executive directors were conducted by a trained, impartial interviewer. Stepwise discriminant analysis was used to predict group membership between informal and formal planners. Of the nine dimensions in the model, three dimensions correctly classified 84 percent of the sample. The three dimensions were fulfillment of planning objectives, use of decision making techniques, and lack of resistance to planning. The level of perceived environmental uncertainty was another criterion set. Directors who perceived high uncertainty paid more attention to the external environment, used more decision making techniques, and relied on functional specialists when planning. Large and small agencies were classified by their annual budgets. Stepwise discriminant analysis using the planning system dimensions failed to reject the null hypothesis. Agencies reporting strong relative competitive positions placed greater …

This study was concerned with the enrollment patterns in required general education courses by technicaloccupational students in an urban community college. The purposes of this study were to (1) examine the general education course enrollment patterns of technical occupational students in specific programs; (2) determine if completion of an English course yields a higher GPA; (3) profile the characteristics of the students who do and do not enroll in general education courses; (4) determine if students enrolled in certain technical-occupational programs are more likely to enroll in general education than students enrolled in similar programs; and (5) determine if completion of general education courses has a positive effect on overall GPA of students.

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.

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.

The purpose of this study was to determine faculty participation in and approval of professional growth and renewal activities in the Dallas County Community College District. The population consisted of 526 full-time faculty employed by the district. The DCCCD Survey instrument, which was used in the study, included activities grouped into seven categories: career development, leaves, international activities, instructional renewal, grants, reward, and a miscellaneous category. Faculty members identified participation in activities; they also identified their approval or disapproval of all activities on a five point Likert-type scale. The population was grouped by teaching field, age, years-of-experience and campus for statistical analyses. A Chi-square test of goodness of fit was conducted to determine if significant differences existed between expected and observed participation among groups in each of the seven categories. An analysis of variance was completed to determine significant differences of opinion. The findings of the study indicated significant differences between expected and observed participation in the following categories: international and instructional activities when faculty were grouped by teaching fields; reward activities among years-of-experience groups. Significant differences of opinion were reported in all but the miscellaneous category when faculty were grouped by teaching field. Other significant differences were reported in …

The main purpose of this study is to develop a bankruptcy prediction model for the small business firm. Data was collected from the Dallas Small Business Administration (SBA), making this study specific to its decision makers. Existing research has produced models which predominately use financial ratios and information measures either independently or combined, and a few research models have used economic trends. This study varies from past studies in that it includes regional economic variables from the states of Texas. A sample of three-year data for 138 firms included fifteen bankrupt firms. This proportion of bankrupt/nonbankrupt firms approximates the proportion of repayed/defaulted loans in the SBA. Stepwise regression, set at the .15 level of significance, reduced a total of fifty-three variables to nine. These nine variables were then used to test twelve predictive models. All twelve models tested improved the SBA repayment rate and only two of the twelve would have caused the SBA to deny loans to applicants who eventually repaid. The study determined the model that included financial ratios, information measures, and Texas economic variables as best. It was also demonstrated that some of the variables used in this model could be eliminated without decreasing the predictive power …

This study traces the development of the Baylor University School of Nursing from its beginning in 1909 through the establishment of the baccalaureate nursing program in 1950. Primary data including official records of the School of Nursing, minutes of the Baylor University Board of Trustees, reports of the School of Nursing to accrediting agencies, and interviews of former students and deans were examined using the historical research techniques of external and internal criticism. A review of the literature that is relevant to the development of nursing education is presented in Chapter II. Chapter III presents the events in the development of the Baylor University School of Nursing. Chapter IV discusses the accreditation criteria which influenced the development of the School of Nursing. Chapter V discusses the curriculum, teaching methods, and faculty qualifications. Chapter VI discusses the people who were the most influential in the development of the School of Nursing. Implications of the study include the recognition that nursing education and nursing service have differing priorities. Conflicts between the needs of patients for care and the needs of students for education arose when the Superintendent of Nurses was responsible for both areas. Usually the needs of patients for care took …

The problem with which this investigation was concerned was that of gaining a better understanding of factors which promote public school teachers' job satisfaction and the determination of the degree of impact of two specific organizational factors upon such job satisfaction. The two organizational factors are those of involvement in the decision-making process of the school district and the locus of control construct. This study had two purposes. The first was to determine if the direct involvement of classroom teachers in the decision-making process of a public school district affected their perceptions of job satisfaction. The second was to determine the relationship of locus of control on job satisfaction when teachers were directly involved in the decision-making process of a public school district.

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.

Sediments in the Trinity River were chemically, physically and biologically characterized and assessed for toxicity. Laboratory bioassays were conducted to identify sediments which induced toxic responses in test organisms and to document these responses through time. Metal and organic contaminant concentrations in bottom sediments were measured. Relationships between these concentrations and biological responses observed in laboratory bioassays were determined. Toxicity identification / reduction methods were used to characterize sediment toxicants. Sediment oxygen demand was also measured in resuspended and undisturbed bottom sediments through time. The Background Sediment Chemistry Approach and the Sediment Bioassay Approach were used to assess sediment quality. Sediment toxicity was observed in whole sediment bioassays using Chironomus tentans as the test species. A relationship between sediment contaminant concentration and toxicity was observed in approximately sixty percent of the sediments. Oxygen demand of resuspended sediments was elevated in sediments at two locations on the river. Oxygen demand of undisturbed sediments was elevated at one location on the river. Characterization of sediment toxicants was conducted using EDTA, pH, and carbon treatments and manipulations of the sediments. Aeration tests were also used to evaluate the contribution of volatile organic contaminants to observed toxicity.