In this study, the relationship between maximal aerobic capacity (VO₂max) and left ventricular function was examined in two distinct age groups. A young group (20 - 30 years of age) and an elderly group (over 60 years of age) were compared. Left ventricular function was examined over wide variations in preload accomplished by 5º head-down tilt (TILT) for ninety minutes and lower body negative pressure (LBNP) to -40 mm Hg. with two-dimensional echocardiography. A greater response to an increase in preload (TILT) was related to high VO₂max levels in the young subjects but not in the elderly groups of subjects, suggesting that lower VO₂max levels of the elderly population affected the mechanism of response to the increased levels of preload. Additionally, in the elderly, greater reductions in ventricular volume reflected increased peripheral pooling due to decreased venous tone and/or increased venous compliance during LBNP and were related to increased VO₂max. In the young, VO₂max does not appear to affect the response to reduced preload.

This study investigated factors influencing the selection of apparel worn to work by women who attended fashion and wardrobe seminars in the Dallas-Fort Worth metroplex. Clothing selection factors were analyzed by computer according to age, marital status, work status and education. The majority most frequently wore suits and separates to work. Single participants preferred separates. Most wore sizes considered average. Respondents most frequently purchased apparel from department stores. Brand name and designer apparel were occasionally purchased. Though interested, few respondents had taken advantage of personal consultant services. It was recommended that retailers make wardrobe services known to the public.

Wretlind, Heden, and Wadstrom found ammonium sulfate to be inhibitory for the formation of extracellular protease in Aeromonas hydrophila grown in Brain Heart Infusion medium. They demonstrated by manipulating the iron and zinc content within their medium that it is possible to differentially affect the accumulation of hemolysin and protease by A. hydrophila grown in batch culture. Further manipulation of the composition of this medium was done in the present study to determine the effect of other components on the production of protease. The purpose of this study was to determine the factors affecting the level of A. hydrophila protease produced in a chemically defined medium.

A comparison of contingent word and phonics drilling exercises on oral reading errors was made and the effects of a work skipping contingency on reading comprehension were examined. Five learning disabled elementary school children served as subjects. Reading comprehension increased from 30 to 50% over baseline, while subjects progressed an average of two years through a reading series. Subjects responded differentially to the two drills on oral reading errors, but the combined effects of the drills produced a 50% average reduction in errors. Pre- and post-tests of reading achievement showed increases in reading grade levels ranging from .8 to 1.5 years during the 10 week, 30 session study. Results supported the efficacy of a behavioral approach to reading remediation.

Data obtained through interviews with eleven directors of school public information directors and four university chairmen in the Dallas-Fort Worth Metroplex indicated that they are generally satisfied with public relations education being housed in the journalism department, with course format, and with undergraduate study and specialization; and that they are dissatisfied with practitioner-educator relationships. Some of their recommendations included that graduatelevel study be offered more often, and that more emphasis be placed in the curriculum on specific areas of public relations, the social sciences, and the news-editing side of communications studies.

This study consists of two parts, the completed videotape production and the production book. The videotape explores the history, organizational structure, and training requirements of the Dallas/Fort Worth Airport Department of Public Safety. A copy of the videotape is shelved in the North Texas State University Media Center Library. The production book describes background preproduction, production, and postproduction of the videotape. Problems, their effects, and solutions are described. The study concludes that an effective videotape can be produced in-house with limited time, equipment, and personnel, at a cost far less than commercially produced films. The study makes specific recommendations for guidelines and planning of future productions.

The purpose of this study was to examine the effects of different surfaces on lower limb motion and encountered pressures at two locations on the plantar surface of the right foot. Nine females performed five trials for each of four surface conditions. The results provided no evidence for surface-related changes in experienced foot contact pressures. Both asphalt and grass surfaces resulted in the shortest relative time of forefoot immobility. No surface related differences were found for the range of pronation.

The investigation is a historical survey tracing the development of Casa Mañana Musicals, Inc., Fort Worth, Texas, from its experimental beginning in 1958 as the first permanent musical arena theatre in the United States, through twenty-three subsequent seasons. The study includes a chapter on the origins of theatre and the influences behind its concept dating back to the 1936 Casa Mañana produced by Billy Rose. Subsequent chapters deal with the theatre's seasons and its struggle to gain acceptance. The theatre's more recent financial and labor problems are also considered. Major sources include such unpublished data as production and financial records of the theatre, contracts, correspondence, minutes of the board of directors, and interviews. Published sources include accounts in newspapers and periodicals.

This study examined the organization, goals and scope of the public relations activity of the First National Bank of Fort Worth, Texas. The study's purpose was to examine the public relations function, department structure, process by which goals and policies are determined, the bank's practice of public relations and the process by which effectiveness is evaluated. The bank satisfactorily met several criteria for public relations effectiveness, but the staff was hampered by a lack of formal goals, philosophy or measurement criteria. The study found the bank's senior management to have a passive attitude toward public relations and to discern it ultimately as a marketing or sales promotion tool. The study recommended establishing formal goals, policies and evaluation criteria.

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 …

The problem with which this investigation was concerned is that of treating agoraphobia with cognitive-behavioral group therapy and cognitive-behavioral group therapy combined with the drug alprazolam (Xanax). The purpose of the research was twofold. The first goal was to determine the relative effectiveness of the two treatment conditions on phobic behavior, anxiety, and depression. A second goal was to analyze the results and make recommendations concerning each of these modalities available to agoraphobics, their families, and to treatment specialists. The research design of this study was a randomized, pretest-posttest, experimental group design. The sample (N = 15) consisted of Group I (N = 7), who received behavioral-cognitive group therapy combined with the medication alprazolam, and Group II (N = 8), who received behavioral-cognitive group therapy only. The treatment included 15, 2-hour weekly group sessions, with the addition of a brief medication evaluation prior to each group meeting for Group I. During these sessions, the subjects received information about agoraphobia in the form of brief didactic segments, treatment materials, homework assignments, group interaction, and various forms of desensitization. Based on the findings of this study, the following conclusions were drawn: 1. Multidimensional behavioral-cognitive group therapy can significantly reduce phobic avoidance, anxiety, …

The purpose of this study was to propose an exploratory causal model that examines the influence of several antecedent variables on burnout. The antecedent variables included age, marital status, education, tenure, Type A personality, Jungian types, death anxiety, leadership style, job satisfaction, stress, coping efficacy, and marital satisfaction. The validity of the causal model was tested by using path analysis. Subjects were 100 male firefighters who completed self-report measures of the predictor variables. Instruments included the Jenkins Activity Survey, Myers- Briggs Type Indicator, Collett-Lester Attitudes Toward Death Scale, Leader Behavior Description Questionnaire, Job Descriptive Index, Perceived Job Stress, The Coping Inventory, Dyadic Adjustment Scale, and the Maslach Burnout Inventory. Perceived work stress made the only direct contribution to the variance in burnout. Direct paths were found to stress from job satisfaction, Type A personality, and single marital status. Job satisfaction was directly related to leadership (consideration) and the Jungian Introversion, Feeling, and Perceiving preferences. Direct paths were found to marital satisfaction from death anxiety, leadership (consideration), and leadership (structure). Leadership (consideration) was directly related to structure. From the above results, it can be concluded that perception of stress is an important factor in predicting burnout. Other factors are important contributors …

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.

Few areas of research in the finance literature have received greater attention than the efficient market hypothesis. Much of the research has been directed toward the securities market while very little research has been done in the real estate markets. The existing research on real estate market efficiency has been either descriptive or illustrative with very little empirical testing being performed. The major reason for the lack of empirical testing has been the inability to develop an adequate data base. The results of the empirical work that has been done do not support the widely held belief that real estate markets are inefficient. This study, using the autoregressive-integrative-moving average (ARIMA) time series analysis technique, tests the weak-form efficiency of the Dallas-Fort Worth office properties real estate market. According to the weak-form efficient market hypothesis, all price information should be capitalized into current real estate prices and not provide the basis for earning abnormal returns in trading. Price data formed from office building sales dating from January, 1979 to January, 1985 are used to test the market. The data was gathered from the files of several professional appraisal firms located in the Dallas-Fort Worth area. The transaction information includes (1) transaction …

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.

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 …

This study examined the factors related to travel mode choices in the Dallas-Fort Worth Metropolitan Area. Changes in population, life style and economy of the Dallas-Fort Worth region over the last few decades demand a careful re-examination of travel demand tools and methods. The purpose of the study was to provide an understanding of transportation modal choice in the region. Those demographic variables best predicting the choices were identified. The Home Interview Survey, a set of disaggregate data from the 19 84 North Central Texas Council of Governments (NCTCOG) Regional Travel Survey, was analyzed using logistic regression. The major findings of the research indicate that about 97 percent of the travelers in the study area used private cars and 3 percent used public transit. Household income and cars-vans were significant explanatory variables. The impact of household income and number of car-vans available upon an individual's decision for travel mode choice were very important. The number of car-vans available in the household, and age of respondents were significant predictors in travel mode. Household members with incomes of $30,000 to $39,000 and those with incomes of at least $50,000 tended to use more private cars than did other income groups. Also, household …

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 problem of the study was to determine the implications for the collegiate secretarial curriculum based on the need for and use of shorthand by secretaries employed by large businesses in the Dallas-Fort Worth area. The purposes of the study were to determine if colleges are justified in offering manual shorthand within their curriculum with the rapid growth of automation in the business world today. It was also the purpose of the study to determine if there was a demand for secretaries with the skill of manual shorthand in the Dallas-Fort Worth area. Shorthand was found to be important for recording telephone messages, notes, and instructions, as indicated by the majority of the secretaries.

This dissertation outlines the creation and history of the Fort Worth Stockyards Company from its conception to the time of this dissertation's publication. The Fort Worth Stockyards Company was created by Greenleif W. Simpson and Louville V. Niles. This company would soon cement Fort Worth as the premier livestock producer in America, soon surpassing Chicago.

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 …

A Faculty Orientation and Design for Writing Across the Curriculum is a case study of the work done to introduce the concept of writing across the curriculum at an urban community college. Emphasizing the related processes of learning, thinking, and writing, the researcher describes private interviews and analyzes transcriptions of small group meetings designed to discuss ways to encourage increased quantity and improved quality of writing in vocational and university-parallel courses on the campus. The focus of the study is the transcription of the faculty meetings where teachers reveal their methodologies and educational philosophies as they discuss ways to provide increased writing opportunities to large classes of open-door students. The culmination of the orientation project is a faculty booklet of ways to increase writing. The researcher concludes that although a writing "program" is not in place as a result of the year's work, essential groundwork for such a program is laid.

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.

This study describes the learning projects of a sample of engineers between the ages of 25 and 35 employed by a single employer in Port Worth, Texas. The problem of this study was the nature and extent of the continuing education programs of young engineers and the implications of these programs to their job requirements and possible employer assistance. The purposes of this study were to determine the number and types of learning projects undertaken each year by engineers with degrees, the number of hours spent by the subjects, the problems experienced, the resources used, the amount of job-related learning projects undertaken, the locations used to pursue learning projects, and whether the learning projects were amenable to assistance from employers.