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
A Weak-Form Efficient Markets Test of the Dallas-Fort Worth Office Properties Real Estate Market (open access)

A Weak-Form Efficient Markets Test of the Dallas-Fort Worth Office Properties Real Estate Market

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 …
Date: May 1987
Creator: McIntosh, Willard
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
Factors Related to Travel Mode Choices in the Dallas-Fort Worth Metropolitan Area (open access)

Factors Related to Travel Mode Choices in the Dallas-Fort Worth Metropolitan Area

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 …
Date: May 1988
Creator: Karimpour, Abdolmehdi
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
The Utilization of Shorthand by Secretaries in Large Businesses in the Dallas-Fort Worth Area with Implications for Instruction in Business Education at the Collegiate Level (open access)

The Utilization of Shorthand by Secretaries in Large Businesses in the Dallas-Fort Worth Area with Implications for Instruction in Business Education at the Collegiate Level

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.
Date: August 1980
Creator: Barnes, Cynthia C.
System: The UNT Digital Library
Independent Piano Teachers: An Investigation of Their Attitudes toward Selected Attributes of Profession (open access)

Independent Piano Teachers: An Investigation of Their Attitudes toward Selected Attributes of Profession

The purpose of the study was to investigate independent piano teachers' view of themselves in the light of selected attributes found in sociological writings on the professions. The research problems were: (a) to determine the attitudes which independent piano teachers held toward selected professional attributes; (b) to determine the relationship between the attitudes toward the professional attributes and selected background variables; and (c) to determine the degree of association between these attributes. The problems were addressed by a questionnaire directed to independent piano teachers active in the area of Dallas-Ft. Worth, Texas. Thirty teachers were also interviewed to determine consistency of response and to explore issues which the questionnaire had raised. Reliability and validity were established at acceptable levels. Techniques of statistical analysis included Pearson's product-moment correlation, multiple regression, chi-square in conjunction with Cramer's V_, and factor analysis. The strongest attitudes expressed by the teachers in the study concerned professional self-image, altruism, client orientation, commitment to work, and independence. The most important background variables were age, years of experience, number of students, certification by a professional association, and college degree in music. A multiple regression analysis tested each variable against the dependent variable professional self-image; recognition by others, commitment to …
Date: May 1989
Creator: Crane, Joyce L. (Joyce Lydia)
System: The UNT Digital Library
An Investigation of Job Satisfaction Among Faculty Members of a Large Multi-Purpose University in the Dallas-Fort Worth Metroplex (open access)

An Investigation of Job Satisfaction Among Faculty Members of a Large Multi-Purpose University in the Dallas-Fort Worth Metroplex

The purpose of this study was to investigate job satisfaction of full-time faculty members at a large multi-purpose university in relation to gender, rank, and types of activity. The population consisted of 664 full-time faculty members at North Texas State University during the spring semester, 1984. The questionnaire consisted of two parts, the Job Descriptive Index and The Faculty Data Sheet. The theoretical basis of the study was Herzberg's theory of Motivation-Hygiene.
Date: May 1985
Creator: Hashemi, Alireza Shapur
System: The UNT Digital Library
Characteristics and Predictors of Success at Two Coed Halfway Houses (open access)

Characteristics and Predictors of Success at Two Coed Halfway Houses

The present study evaluated offender characteristics associated with completion of halfway house placement by the inclusion of additional offender characteristics for analysis in addition to those studied in previous research, the analysis of a large number of representative cases, and the use of statistics allowing clear conclusions upon which to base decision making. Data analysis was done in three steps. The first Step was to identify offender characteristics which were associated with completion in halfway house placement. The second step was to see how accurate the offender characteristics identified were in predicting completion of an offender's halfway house stay. The third step was to identify any possible factors which underlie the offender characteristics identified. Discriminant analyses identified ten offender characteristics which were associated with completion of halfway house placement for 521 male offenders and four offender characteristics which were associated with halfway house completion for the group of 33 female offenders studied. These offender characteristics resulted in 75.38 percent correctly classified cases for the male offender group and 96.9 7 percent correctly classified cases for the group of female offenders. Factor analyses resulted in the identification of four factors for the group of male offenders and two factors for the …
Date: May 1985
Creator: Sperry, Robert M., 1953-
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 President's Role in Reorganization in Two Texas Metropolitan Community College Districts (open access)

The President's Role in Reorganization in Two Texas Metropolitan Community College Districts

This study describes perceptions of the president's role in organizational change in each of ten colleges in two metropolitan community college districts. The purposes included (1) tracing major administrative reorganizations from the fall of 1975 to the spring of 1985, (2) ascertaining perceptions of the reasons for those reorganizations, and (3) obtaining perceptions of the role of the president in those reorganizations.
Date: August 1986
Creator: Norton, Joe Lee
System: The UNT Digital Library
Factors Influencing the Selection of Apparel Worn to Work by Women in the Dallas-Forth Worth Metroplex (open access)

Factors Influencing the Selection of Apparel Worn to Work by Women in the Dallas-Forth Worth Metroplex

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.
Date: August 1982
Creator: Russell, Jean, 1958-
System: The UNT Digital Library
A Comparison of Sight Word and Phonics Contingencies in the Remediation of Oral Reading and Comprehension (open access)

A Comparison of Sight Word and Phonics Contingencies in the Remediation of Oral Reading and Comprehension

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.
Date: August 1983
Creator: Huffine, John Harold
System: The UNT Digital Library
A Comparison in the Dallas-Fort Worth Metroplex Between the State of Public Relations Education and the Views of Public School Public Information Directors and University Journalism Department Chairmen Concerning Public Relations Education (open access)

A Comparison in the Dallas-Fort Worth Metroplex Between the State of Public Relations Education and the Views of Public School Public Information Directors and University Journalism Department Chairmen Concerning Public Relations Education

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.
Date: May 1980
Creator: Ramsey, Patricia Kingsley
System: The UNT Digital Library
Public Safety, D/FW Style: Production of an Informational Videotape (open access)

Public Safety, D/FW Style: Production of an Informational Videotape

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.
Date: August 1981
Creator: Holland, Marvin Glyn
System: The UNT Digital Library