UNT Theses and Dissertations - 249 Matching Results

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The Effect of N, N Bis (ethylene)-P (1-adamantyl) Phosphonic Diamide on Rous Sarcoma Virus

Description: The drug, N,N bis (ethylene)-P (1-adamantyl) phosphonic diamide inhibits focus formation of Rous Sarcoma Virus in tissue culture. Transformation of chick cells was inhibited when the drug was added to chick cells prior to infection. The drug did not inhibit the transformation of Normal Rat Kidney Cells infected with RSV, when the cells were grown at non-permissive temperatures and shifted to permissive temperatures upon addition of the drug. Nor did the drug revert cells transformed at permissive temperatures. These studies indicated that the inhibition of RSV is in the early stage of viral growth, possible penetration or uncoating.
Date: March 1988
Creator: McGraw, Thomas L. (Thomas Lee)
Partner: UNT Libraries

Aggression and Social Interest in Behavior Disordered Students

Description: This study investigated whether behavior disordered children would decrease aggressive behavior if their social interest were developed. Three hypotheses that were tested predicted that there would be a significant difference between the control group and the experimental group on adjusted mean scores on aggressive behavior on post test scores. The measuring instruments used were the Child Behavior Checklist Parent Report Form, the Child Behavior Checklist Teacher Report Form, and the Child Behavior Checklist Director Observation Form. It was also predicted that there would be a significant difference between the control group and the experimental group on post test adjusted mean scores as measured on the Social Interest Scale. An analysis of covariance was employed to test the data. Behavior disordered students in the experimental group participated in three activities designed to develop their social interest. They participated in peer tutoring, socialization with nursing home residents, and group discussions. Data were collected from parents, teachers, and observers of behavior disordered students in an elementary school in Northwest Louisiana during the summer term of 1987. Teachers did report a statistically significant difference between the experimental and the control groups in the decrease of aggressive behavior. These results are in accord with predictions generated by Adlerian theory and with naturalistic data. Parents and observers did not report a statistically significant difference between the two groups in the decrease of aggressive behavior. Significant differences were not found between the experimental and control groups in the development of social interest. Since the teachers did report statistically significant results in this study, it is recommended that these same activities to develop social interest be repeated, that counseling sessions be designed to be more therapeutic, and that additional modeling and role playing be included. It is further recommended that an instrument be developed to measure social interest ...
Date: May 1988
Creator: Brown, Deborah D. (Deborah Dairy)
Partner: UNT Libraries

The American University of Beirut and Its Educational Activities in Lebanon, 1920-1967

Description: The purpose of this study was to trace the historical development of the American University of Beirut and its educational contributions in Lebanon and the Middle East from 1920 to 1967. Through their activities in the Levant in the early nineteenth century, the American missionaries virtually laid the foundations of the Syrian Protestant College, later known as the American University of Beirut. Though religion was the cornerstone in the founding of the University, under the pressure of the local environment, its secular character was to be substituted for the religious one. The establishment of the University in 1866 marked the beginning of the system of higher education in the Arab world. As the first established institution of higher learning, the University played a significant role in raising the level of literacy throughout the region. Despite the difficult times that the University faced throughout its history, it survived and continued its dedicated mission to serve the people of Lebanon and the entire area. For the University, the first 50 years under Ottoman rule was a period of surviving and maintaining its existence. With the freedom it came to enjoy during the French Mandate and later during independence, the University moved into a period of advancing and expanding. By the 1960s the University had become a prestigious institution and captured the support of most people and governments in the area. The study's six chapters describe the historical setting of Lebanon and the origins of its religious groups, the historical background of the American University of Beirut, the educational activities of the University during the French Mandate, and its educational activities under independent Lebanon. The thesis showed that the University had a significant role in the education of the Lebanese and the peoples of the area, and that it has significantly contributed to ...
Date: May 1988
Creator: Sayah, Edward
Partner: UNT Libraries

An Analysis of the Participant Selection Process Under the Comprehensive Employment and Training Act: Texas and Louisiana

Description: Federal guidelines required prime sponsors under the Comprehensive Employment and Training Act, or CETA, to serve the "significant segments" of the eligible population. This study analyzes whether prime sponsors in Texas and Louisiana correctly identified and served those segments. This study finds that eligible ethnic groups were properly identified and were served equitably; age and gender distinctions, however, were inadequately observed in the providing of services.
Date: May 1988
Creator: Drake, William D. (William Daniel), 1950-
Partner: UNT Libraries

The Angry Charmer

Description: This screenplay, dealing with the theme of anger, is divided into three acts: setup, confrontation and resolution, respectively. Beginning in medias res, flashbacks are employed for expositions of the two main characters, Connor Tracy, alias the Angry Charmer, and Howard Goldberg. Act I opens with Connor at the wheel of a van, driving wildly, Howard accompanying. The setup is established. Act IlI returns to the careening van and then flashbacks to the college meeting of Connor and Howard. By the end of the act, the two, now unwilling relatives, go off on a European trip together. The confrontation has begun in earnest. Act III resolves the problem of Connor's anger through the purgative experi ences of the vacation, in particular the climactic ending.
Date: May 1988
Creator: Wall, Jeffrey R. (Jeffrey Robert)
Partner: UNT Libraries

Arbitrage Pricing Theory and the Capital Asset Pricing Model: Evidence from the Eurodollar Bond Market

Description: Monthly returns on twenty-seven Eurobonds from July 1982 to June 1986 were examined. There were no consistent differences in returns based on the country in which a firm is located. There were consistent differences due to industry classification, with energy-related firms exhibiting higher average returns and variances. Excess returns were calculated using the capital asset pricing model and arbitrage pricing theory. The results from calculation of mean average deviation, root mean square, and R2 all indicate that the arbitrage pricing theory was a better descriptor of the Eurobond market. The excess returns were also examined using stochastic dominance. Arbitrage pricing theory never dominated the capital asset pricing model using first-order criteria, but consistently dominated using second-order criteria. The results were discussed in terms of the implications for investors and portfolio managers.
Date: May 1988
Creator: Jordan-Wagner, James M. (James Michael)
Partner: UNT Libraries

Aspects of fathead minnow reproductive behavior

Description: Following a study of normal reproductive behavior of fathead minnows, Pimephales promelas, experiments were conducted to determine the stability/variability of behavior by sexually mature, territorial males under a variety of manipulated conditions. Collectively, these experiments indicate that although the individual behaviors of fathead minnows appear to be quite variable, the overall process, reproductive behavior, is stable.
Date: May 1988
Creator: Pyron, Mark
Partner: UNT Libraries

An Assessment of Occupational Investigation Courses in Texas in Relationship to Mainstreamed Handicapped Students Served

Description: The purpose of the study was to determine if occupational investigation teachers and vocational administrators held similar or differing attitudes toward the occupational investigation courses in relation to the mainstreamed handicapped students they served. The following conclusions were warranted from the findings of the analyses of the data. Findings derived from multiple T tests indicate that occupational investigation teachers perceive all survey item statements concerning Admission, Review, and Dismissal (ARD) meetings and the content of Individual Education Programs (IEPs) as occurring to a significantly lesser degree than do vocational administrators. There is no significant discrepancy in their perceptions toward the current practices of occupational investigation teacher training, student assessment, classroom accessibility, course content, or special education assistance described in the survey items. The results of the multiple T tests indicate that there are no significant differences between the attitudes and perceptions of occupational investigation teachers and vocational administrators in Texas toward the future of any of the conditions reflected in the survey items. Teachers and administrators agree that all of the current conditions reflected by the items should be promoted to a higher degree in the future. The results of the multiple T tests indicate a high degree of significance in the disparity between teachers and administrators with regard to their attitudes toward the amount of change and the degree of improvement in the conditions in the survey item statements reflecting ARD committee meetings and the uses of IEPs. However, no significant disparity was found between their perceptions of the difference between the current practice and the optimum condition for items illustrating teacher training, classroom accessibility, course content, student assessment, or special education assistance.
Date: May 1988
Creator: Ragland, George B., 1953-
Partner: UNT Libraries

The Association between Class Size, Achievement, and Opinions of University Students in First-Semester Calculus

Description: The purposes of the study were: to determine the relationship between class size and academic achievement among university students in first-semester calculus classes, and to compare opinions about the instructor, course, and classroom learning environment of university students in small first-semester calculus classes with those in large classes. The sample consisted of 225 university students distributed among two large and two small sections of first-semester calculus classes taught at the University of Texas at Arlington during the fall of 1987. Each of two tenured faculty members taught a large and small section of approximately 85 and 27 students, respectively. During the first week of the semester, scores from the Calculus Readiness Test (CR) were obtained from the sample and used as the covariate in each analysis of covariance of four periodic tests, a comprehensive final examination, and final grade average. The CR scores were also used in a logistic regression analysis of attrition rates between each pair of large and small sections of first-semester calculus. Three semantic differentials were used to test the hypotheses relating to student opinion of the instructor, course, and classroom learning environment. It was found that for both pairs of large and small first-semester calculus classes there was no significant difference in the adjusted means for each of the four periodic tests, the final examination scores, the final grade averages, and the attrition rates. It was also found that the means of the student evaluation of the course by students in small and large classes were not significantly different, and the results of the student evaluations of the instructor and classroom learning environment by students in small and large first—semester calculus classes were mixed.
Date: May 1988
Creator: Warren, Eddie N. (Eddie Nelson)
Partner: UNT Libraries

Attitudes of Faculty Members in the Open Universities in Thailand toward Media Technologies

Description: This study was to compare the attitudes in terms of sex and current position, and to investigate the attitudes of faculty members in Open Universities in Thailand toward media technologies in terms of age, education, and teaching experience. A 25-statement questionnaire, with a reliability of 0.91 for measuring attitudes, was used to gather the data. The total stratified random sampling population was 300 faculty members in the Open Universities, 272 from Ramkhamhaeng University (RU) and 28 from Sukhothai Thammathirat Open University (STOU). The returned rate of the questionnaire was 244 (81.33%), 219 (80.51%) from RU and 25 (89.28%) from STOU. The t test was used to test significant differences between males and females, and administrators and faculties. The one-way analysis of variance was used to test significant differences among the levels of age, education, and teaching experience. The results of this study indicated that the attitudes of faculty members in Open Universities in Thailand toward media technologies were not significantly different in terms of sex, age, education, teaching experience, and current position. The faculty members considered the use of (1) closed circuit television as the form of media which enhanced teaching quality and student learning in virtually all instructional contents, aided instructors, improved instruction, and was readily available; (2) television as the form of media which made the content of the course more clear for students, promoted students* independent study, increased student motivation, was helpful to instructors in improving instruction, and was cost-beneficial; (3) radio as the form of media most frequently used in the past; (4) overhead projector as the form of media most manageable in the teaching process; (5) laser disc player as the form of media too complex for efficient classroom use; and (6) interactive video systems as the form of media most inhibiting to instructors.
Date: May 1988
Creator: Suteera Suriyawongse
Partner: UNT Libraries

Bulimia: a Phenomenological Approach

Description: This study used a qualitative/phenomenological research methodology to examine the perspective of five bulimic subjects about their lives in order to understand the bulimic individual's point of view and develop a clearer picture of the world of the bulimic. This approach involved three interviews for each of the five subjects totalling 22 1/2 hours. The three interviews dealt with the subjects' past and present experiences and their ideas about the future. The qualitative/phenomenological methodology created an in-depth view of each subject's relationship to the beginning of her bulimia and its subsequent development. During the period when the interviews were being transcribed, patterns and concepts emerged and were examined. Nine categories were developed from this data reflecting some of the characteristics of a bulimic's personality. Six research questions were formulated and then answered by evaluating them in the light of the nine categories as well as data and descriptions from the interviews. No one single category was found to be uniquely dominant, but rather the categories tended to appear in a cluster-like fashion depending on the individual personality of the bulimic. The data of this study revealed a distinction between the personality and the behavior of the bulimic. A form with a Likert-like response was developed by the researcher and given out to 11 raters in order to evaluate the presence or non-presence of the categories in selected passages. On the basis of the findings of this study, with its limited subject pool, certain recommendations are presented for the reader that might perhaps be of some use in understanding bulimia.
Date: May 1988
Creator: Schachtel, Bernard, 1943-
Partner: UNT Libraries

California-ko Ostatuak: a History of California's Basque Hotels

Description: The history of California's Basque boardinghouses, or ostatuak, is the subject of this dissertation. To date, scholarly literature on ethnic boardinghouses is minimal and even less has been written on the Basque "hotels" of the American West. As a result, conclusions in this study rely upon interviews, census records, local directories, early maps, and newspapers. The first Basque boardinghouses in the United States appeared in California in the decade following the gold rush and tended to be outposts along travel routes used by Basque miners and sheepmen. As more Basques migrated to the United States, clusters of ostatuak sprang up in communities where Basque colonies had formed, particularly in Los Angeles and San Francisco during the late nineteenth century. In the years between 1890 and 1940, the ostatuak reached their zenith as Basques spread throughout the state and took their boardinghouses with them. This study outlines the earliest appearances of the Basque ostatuak, charts their expansion, and describes their present state of demise. The role of the ostatuak within Basque-American culture and a description of how they operated is another important aspect of this dissertation. Information from interviews supports the claim that the ostatua was the most important social institution among Americanuak during peak years of Basque immigration. Since a majority of the Basque sojourners who arrived before 1930 were unmarried, unable to speak English, and intended to return to the Old World within a decade of their arrival, the Basque-American often substituted his "hotel" contacts for his Old World family. At the ostatuak, he found a familiar language and cuisine, as well as an employment agency, a place to vacation, translating services, an occasional loan, explanations of his host culture, and new friends from old villages. This history of California's ostatuak is the first of its kind and encourages ...
Date: May 1988
Creator: Echeverría, Jerónima, 1946-
Partner: UNT Libraries

The Cardiovascular Responses to Static and Dynamic Muscular Contractions in Adults with Cerebral Palsy

Description: In cerebral palsied adults, the cardiovascular responses to different types of exercise have not previously been ascertained. Therefore, the purpose of this study was to determine the blood pressure and heart rate responses of adults with cerebral palsy to static muscular contractions and to dynamic muscular contractions. Fifteen adults with cerebral palsy and 15 able-bodied adults (average age for each group = 30 years) performed a static exercise protocol and a dynamic resistance exercise protocol using each limb (or the limbs capable of meeting the requirements of the exercise protocol). Heart rate and blood pressure were assessed before, during, and after each exercise bout with each limb. During the static exercise protocol, each subject performed static contractions at 40% of maximal voluntary contraction to fatigue. The dynamic exercise protocol for each limb consisted of three 20-second bouts of hydraulic resistance exercise each of which was followed by 20 seconds of rest. No differences were found between the two groups of subjects in heart rate and blood pressure during static exercise. In dynamic exercise, however, the trend in heart rate from bout to bout differed between the groups. In addition, the cerebral palsied group's diastolic pressure was higher than that of the able-bodied group at the end of dynamic exercise. The findings of this study indicate that although the heart rate and blood pressure responses to dynamic resistance exercise in the cerebral palsied subjects differed from the responses of the able-bodied subjects, healthy adults with cerebral palsy may safely perform both static and dynamic resistance exercise. More research using this disabled population is needed so that guidelines for prescribing exercise for adults with cerebral palsy may be developed.
Date: May 1988
Creator: Parrish,Ginger S.
Partner: UNT Libraries

The Characteristics and Properties of the Threshold and Squared-Error Criterion-Referenced Agreement Indices

Description: Educators who use criterion-referenced measurement to ascertain the current level of performance of an examinee in order that the examinee may be classified as either a master or a nonmaster need to know the accuracy and consistency of their decisions regarding assignment of mastery states. This study examined the sampling distribution characteristics of two reliability indices that use the squared-error agreement function: Livingston's k^2(X,Tx) and Brennan and Kane's M(C). The sampling distribution characteristics of five indices that use the threshold agreement function were also examined: Subkoviak's Pc. Huynh's p and k. and Swaminathan's p and k. These seven methods of calculating reliability were also compared under varying conditions of sample size, test length, and criterion or cutoff score. Computer-generated data provided randomly parallel test forms for N = 2000 cases. From this, 1000 samples were drawn, with replacement, and each of the seven reliability indices was calculated. Descriptive statistics were collected for each sample set and examined for distribution characteristics. In addition, the mean value for each index was compared to the population parameter value of consistent mastery/nonmastery classifications. The results indicated that the sampling distribution characteristics of all seven reliability indices approach normal characteristics with increased sample size. The results also indicated that Huynh's p was the most accurate estimate of the population parameter, with the smallest degree of negative bias. Swaminathan's p was the next best estimate of the population parameter, but it has the disadvantage of requiring two test administrations, while Huynh's p index only requires one administration.
Date: May 1988
Creator: Dutschke, Cynthia F. (Cynthia Fleming)
Partner: UNT Libraries

Characteristics of Development Directors in Charitable Homes for the Aged

Description: This study concerns the characteristics of fund development directors employed in selected homes for the aged. The first purpose of this study is to develop a profile of job functions, through task analysis, among development directors in charitable homes for the aged. The second purpose of this study is to develop a profile of personal characteristics of development directors of charitable homes for the aged based on the following characteristics: age, sex, educational background, experience outside development, membership in community organizations and amount of specific training in fund development. One instrument was used to gather data for the study. It was distributed to a population of 29 development directors in charitable homes for the aged in Arkansas, Louisiana, Oklahoma, New Mexico, and Texas. This population was predetermined by an initial survey form sent to 193 chief executive officers in the five states mentioned above. Twenty-nine reported formalized programs employing a full-time person with at least a part-time involvement in fund development activities. Of the twenty-nine development directors surveyed, fifteen usable instruments were received (52 percent). A program was used for the survey that included crosstabulation of social characteristics, success in fund raising, length of time in position and educational preparation. Coded responses were manually typed into the computer. To accomplish the desired analysis, percentages and frequencies were used to treat the data. These non-Parametric procedures provide an understandable overview of the data obtained and are appropriate for the research questions. These procedures permit a summarization of the data in a manageable form. Following the tabulation of frequencies and percentages, Fischer's Exact Probability Test was computed to determine if significant relationships between actual preparation and needed preparation, personal characteristics, educational preparation, and success and usefulness of experience exist.
Date: May 1988
Creator: Wuenschel, Douglas F. (Douglas Ferdinand)
Partner: UNT Libraries

Counseling Service Needs of Chinese College Students: Student, Faculty, and Student Affairs Staff Perceptions

Description: This study was designed to explore the different perceptions of college students' counseling service needs as well as the perceptions of counseling services by the student, faculty, and student affairs staff groups and subgroups of each group. The research approach of this investigation was a case study of one national university in the Republic of China. This study tested seven hypotheses and the major findings are as follows: there were significant differences among students, faculty, and student affairs staff members' perceptions of counseling services in terms of importance and success. Although all three groups agreed that the achievement of the counseling goals were important, the students showed a significantly stronger expectation than did faculty members. Findings related to the success of counseling services in the institution indicated that student affairs staff members showed higher mean scores than did the faculty and students. All three groups perceived a significant discrepancy between the importance of counseling services and the success of counseling services. Moreover, all subgroups of students, as divided by demographic variables, perceived a significant discrepancy between the importance and success of counseling services. All subgroups of faculty and student affairs staff members, except the members of military instructors and members with a mainland China educational background, perceived significant differences between the importance and success of counseling services. The sex, age, class level, academic major, and grade point average of students indicated significant differences either in the importance or the success of counseling services. Likewise, the status, educational background, and degrees earned of faculty and student affairs staff members also showed significant differences in the perceptions of either the importance or the success of counseling services. The study suggested that program planners should be aware of demographic variables when planning counseling programs. Further definitive research is recommended in order to investigate ...
Date: May 1988
Creator: Chang, Sheue Mei
Partner: UNT Libraries

Determinants of Small Firm Performance: the Importance of Selected Managerial Personality Traits, Perceived Environmental Uncertainty, Scanning Activities, and Managerial Goal Setting Activities

Description: Much of the previous research on organizational performance deals with the larger businesses. As such, the owner/managers of small firms and researchers interested in small businesses have had to work with planning models which were not formulated with small businesses in mind. Therefore, the general purpose of this study is to help correct this deficiency and add to the body of knowledge concerning the contributions specific factors make toward increasing the performance of small firms. Specifically, selected managerial personality traits, managerial perceived environmental uncertainty, managerial scanning habits, and managerial goal setting activities are utilized to develop three models. The three models are used to determine the relationship the factors have to each other and the contribution the variables make toward the performance of the firm. The firms included in this study are located in a South Central metropolitan area. The firms have between 2 and 100 employees, sales of less than 3 million dollars, and have been in operation 2 years or longer. This study utilizes regression analysis and path analysis to determine the effects the factors have on each other and their contribution to the firm's performance. The Statistical Package for the Social Sciences (SPSSx) is utilized to run the regression analysis. An Analysis of Linear Structural Relationships by the Method of Maximum Likelihood (LISREL) is utilized for the path analysis. Using path analysis, the third model demonstrates a total coefficient of determination for structural equations of 0.09. However, only two of the four factors have a t value of 2.0 or greater. The study also indicates the personality trait of dogmatism is inversely related to managerial scanning -.349 p <.01. Perceived environmental uncertainty is negatively correlated to performance at -.215 p <.05. None of the remaining factors demonstrated significant relationship to the firm's performance.
Date: May 1988
Creator: Walker, Jim L.
Partner: UNT Libraries

The Development of a Definition and Applied Evaluation Criteria for Psycho-Narrative Video Art

Description: This thesis is concerned with three problems. The first is that of distinguishing and defining one category of video art. The second is developing criteria for the evaluation of works in this category. The third problem is the application of these criteria to a new psycho-narrative video art piece created by the author as well as two pieces by other artists. This paper examines the use of film and video as an art form, focusing on specific influences affecting the evolution of psycho-narrative video art. Definitions for video art and psycho-narrative video art are developed. Descriptive criteria and three critiques are used to justify the conclusions. A concluding artist statement presents the personal view of the author.
Date: May 1988
Creator: Sadlowski, Gail
Partner: UNT Libraries

Differences in the Actual and Ideal Roles of Secondary School Counselors in Region X Schools as Perceived by Counselors, Principals, and Counselor Educators

Description: There has been extensive criticism of schools for allowing counselors to be used for duties that lie beyond defined counselor roles. The purpose of this study was to determine if counselors are still being misused today as they have allegedly been in the past. The problem was divided into nine questions in order to ascertain differences in actual and ideal roles of secondary school counselors as perceived by counselors, principals and counselor educators. The study was limited to secondary schools in the Region X Education Service Center in Texas. The study included brief definitions of roles and an extensive review of literature. Twenty-three schools from the Region X Education Service Center in Texas were chosen using a random, stratified selection process. A counselor and the principal from each of these schools were interviewed using a Q sort. Three counselor educators were randomly selected to participate from each of three universities in the area. The Q-sort technique was used in order to determine differences in actual and ideal perceptions of the counselor's role as held by counselors, principals, and counselor educators. Cohen's equation for Q sorts was used to establish correlations between the different perceptions. A t distribution for correlation was used to determine significance. There was a significant positive correlation for these groups concerning their perceptions of secondary school counselors' roles: 1. Counselors' actual and counselors' ideal. 2. Principals' actual and principals' ideal. 3. Counselor educators' actual and counselors* ideal. 4. Counselors' and principals' actual. 5. Principals' and counselor educators' actual. 6. Counselors' and counselor educators' actual. 7. Counselors' and principals' ideal. 8. Counselors' and counselor educators' ideal. 9. Principals' and counselor educators' ideal. The Q-sort questions were also analyzed to determine which roles were ranked by these three groups to be most and least important.
Date: May 1988
Creator: Dethlefsen, Anna K. (Anna Katheryn)
Partner: UNT Libraries

Dually Semimodular Consistent Lattices

Description: A lattice L is said to be dually semimodular if for all elements a and b in L, a ∨ b covers b implies that a covers a ∧ b. L is consistent if for every join-irreducible j and every element x in L, the element x ∨ j is a join-irreducible in the upper interval [x,l]. In this paper, finite dually semimodular consistent lattices are investigated. Examples of these lattices are the lattices of subnormal subgroups of a finite group. In 1954, R. P. Dilworth proved that in a finite modular lattice, the number of elements covering exactly k elements is equal to the number of elements covered by exactly k elements. Here, it is established that if a finite dually semimodular consistent lattice has the same number of join-irreducibles as meet-irreducibles, then it is modular. Hence, a converse of Dilworth's theorem, in the case when k equals 1, is obtained for finite dually semimodular consistent lattices. Several combinatorial results are shown for finite consistent lattices similar to those already established for finite geometric lattices. The reach of an element x in a lattice L is the difference between the rank of x*, the join of x and all the elements covering x, and the rank of x; the maximum reach of all elements in L is the reach of L. Sharp lower bounds for the total number of elements and the number of elements of a given reach in a semimodular consistent lattice given the rank, the reach, and the number of join-irreducibles are found. Extremal lattices attaining these bounds are described. Similar results are then obtained for finite dually semimodular consistent lattices.
Date: May 1988
Creator: Gragg, Karen E. (Karen Elizabeth)
Partner: UNT Libraries

Dynamics of One-Dimensional Maps: Symbols, Uniqueness, and Dimension

Description: This dissertation is a study of the dynamics of one-dimensional unimodal maps and is mainly concerned with those maps which are trapezoidal. The trapezoidal function, f_e, is defined for eΣ(0,1/2) by f_e(x)=x/e for xΣ[0,e], f_e(x)=1 for xΣ(e,1-e), and f_e(x)=(1-x)/e for xΣ[1-e,1]. We study the symbolic dynamics of the kneading sequences and relate them to the analytic dynamics of these maps. Chapter one is an overview of the present theory of Metropolis, Stein, and Stein (MSS). In Chapter two a formula is given that counts the number of MSS sequences of length n. Next, the number of distinct primitive colorings of n beads with two colors, as counted by Gilbert and Riordan, is shown to equal the number of MSS sequences of length n. An algorithm is given that produces a bisection between these two quantities for each n. Lastly, the number of negative orbits of size n for the function f(z)=z^2-2, as counted by P.J. Myrberg, is shown to equal the number of MSS sequences of length n. For an MSS sequence P, let H_ϖ(P) be the unique common extension of the harmonics of P. In Chapter three it is proved that there is exactly one J(P)Σ[0,1] such that the itinerary of λ(P) under the map is λ(P)f_e is H_ϖ(P). In Chapter four it is shown that only period doubling or period halving bifurcations can occur for the family λf_e, λΣ[0,1]. Results concerning how the size of a stable orbit changes as bifurcations of the family λf_e occur are given. Let λΣ[0,1] be such that 1/2 is a periodic point of λf_e. In this case 1/2 is superstable. Chapter five investigates the boundary of the basin of attraction of this stable orbit. An algorithm is given that yields a graph directed construction such that the object constructed is the basin ...
Date: May 1988
Creator: Brucks, Karen M. (Karen Marie), 1957-
Partner: UNT Libraries

Effect of the New Criteria for Accreditation on Reaffirmation of Accreditation in the South

Description: This study was concerned with characteristics of the process of reaffirmation of accreditation in the Southern region among institutions that completed reaffirmation under the revised _Criteria for Accreditation_ and those that completed reaffirmation under the former _Standards of the College Delegate Assembly._ The institutions that had completed reaffirmation under the new _Criteria_ were identified. A matching group of equivalent institutions which had last completed reaffirmation under the _Standards_ was created. Each group contained 66 institutions. Data were collected using the records of the Commission on Colleges of the Southern Association of Colleges and Schools. Four areas were identified in which the implementation of the _Criteria_ might affect the process of reaffirmation of accreditation: (a) institutional organization for the self-study, (b) visiting committee composition, (c) number of recommendations by visiting committees, and (d) substance of recommendations by visiting committees. A series of nine hypotheses were tested to assess these effects. The process of reaffirmation of accreditation does not appear to have been substantially affected by the implementation of the new _Criteria for Accreditation._ Institutional organization for the self-study appears unaffected by the implementation of the Criteria for most institutions. There appears, however, to be evidence that the _Criteria_ have effected change for a minority of institutions. The implementation of the _Criteria for Accreditation_ does not appear to have influenced either the size or the composition of visiting committees of peers. The implementation of the _Criteria for Accreditation_ has not increased the average number of recommendations by visiting committees of peers, but there appears to be evidence that it has created a minimum core of recommendations common to many institutions. The addition of the criterion on institutional effectiveness apparently has created a new and proportionately overrepresented focus for visiting committee recommendations.
Date: May 1988
Creator: Freeman, Irving
Partner: UNT Libraries

The Effects of Cognitive Style and Socialization Background on Patterns of Behavior: Integrating Individual Differences (Using the MBTI) with Meadian Socialization Theory

Description: The general purpose of this study is to examine the effects of socialization background and cognitive style on individuals' patterns of behavior. The more specific purpose is to integrate the individual differences factor using the Myers-Briggs Type Indicator with Meadian Theory of Socialization in order to explore the ways in which a group of incarcerated individuals with prior felony and misdemeanor convictions and a group of college students are different regarding their different socialization background and cognitive styles. Data for this study were collected from a university and a county jail in Texas. During the process of data collection, two questionnaires consisting of 117 items were used to measure individual characteristics and elements of socialization background. This study is organized into four different chapters. Chapter I involves a detailed review of related literature, the purpose of the study, stated hypotheses, significance of the study, and limitations. Chapter II discusses methodological procedures and Chapter III presents the findings of the study. The last chapter includes a detailed conclusion and practical implications of the study. The findings in this study indicated that the group of incarcerated individuals and the group of college students are significantly different in terms of their different individual characteristics and socialization backgrounds. However, it was found that socialization background has the most significant effects on patterns of behavior among the two groups under study. It was concluded that while accepting the crucial importance of socialization factors, specific psychological characteristics of people also need to be integrated into sociological studies concerning human behavior for the better understanding of different groups and individuals in society.
Date: May 1988
Creator: Nazempooran, Ali
Partner: UNT Libraries

Effects of lysolecithin on macrophages

Description: The effect of lysolecithin on the macrophage was studied using five macrophage function assays. The results of indicate that lyso lecithin is a macrophage activating agent which causes enhanced cell spreading, increased phagocytosis of sheep erythrocytes, heightened membrane activity in the presence of damaged autologous red blood cells, chemotaxis, and vigorous phagocytosis and intracellular killing of Staphylococcus albus.
Date: May 1988
Creator: Swee, Mei Hua
Partner: UNT Libraries