This research is concerned with inheritance as used in object-oriented database. More specifically, partial bi-directional inheritance among classes is examined. In partial inheritance, a class can inherit a proper subset of instance variables from another class. Two subclasses of the same superclass do not need to inherit the same proper subset of instance variables from their superclass. Bi-directional partial inheritance allows a class to inherit instance variables from its subclass. The prototype of an object-oriented database that supports both full and partial bi-directional inheritance among classes was developed on top of an existing relational database management system. The prototype was tested with two database applications. One database application needs full and partial inheritance. The second database application required bi-directional inheritance. The result of this testing suggests both advantages and disadvantages of partial bi-directional inheritance. Future areas of research are also suggested.

Thermal and flash photolysis studies of ligand-substitution reactions of cis-(pip)(L)M(CO)_4 by L' (pip = piperidine; L, L' = CO, phosphines, phosphites; M = Cr, Mo) implicate square-pyramidal [(L)M(CO)_4], in which L occupies a coordination site in the equatorial plane, as the reactive species. In chlorobenzene (= CB) solvent, the predominant species formed after flash photolysis and a steady-state intermediate for the thermal reaction is cis—[(CB)(L)M(CO)_4], for which rates of CB-dissociation increase with increasing steric demands of coordinated L. Rates of CB-dissociation from trans-[(CB)(L)M(CO)_4] intermediates, formed after photolysis but not thermally, exhibit no observable dependence on the steric properties of the coordinated L.

A group of 101 older adults (sixty-five years of age and over) who lived independently in three retirement apartment residences in Denton, Texas, were asked about their patterns of reading, television viewing, and radio listening habits for two periods in their lives: (1) at age forty to fifty-five and (2) at the present. Respondents were asked about their use of external information sources (public library, grocery store, newsstand, etc.) and their use of proximate information sources (radio, friends/relatives, television, etc.) They were also asked about access to transportation, income satisfaction, status of general health, vision, hearing, physical mobility and reasons for utilizing various information sources. Four hypotheses relating changes in health, environment, economic status, and education to reasons for reading and use of information sources were tested through the use of t-tests, regression analysis and analysis of variance. Within this group of older adults, use of external information sources decreased from the past to the present. There was, however, no change in the use of information sources located in or near the residence as difficulties in these areas increased. A relationship was found between educational level and reading for pleasure earlier in life. Also, those with higher educational levels reported …

The primary purpose of this study was to compare regular classroom instruction which used Guided Mental Imagery (GMI) to a non-GMI teaching method. This comparison was expected to yield data which would provide insights relating to the potential of GMI as a useful and effective instructional strategy. Quasi-experimental research methods were followed. The experimental design was a modified "post-test only control group design." Two-hundred-four students in naturally occurring in tact classes formed the experimental and control groups. All groups received instruction in identical science/health content. Two parallel post-tests were administered to all students. Post-test "A" was given immediately after instruction to measure learning acquisition. Post-test "B" was given four weeks later to measure retention of learning. Means for test scores were grouped according to treatment and sub-grouped by the variables: IQ, handedness, identified learning disability, and intellectual giftedness. T_ tests for differences between independent means were conducted. Students' acquisition of basic academic content, when instructed with GMI methodology, was found to differ significantly from students' acquisition of the same content with non-GMI instruction. No statistically significant differences based on instructional methodology were found for content retention. The investigator concluded that GMI instruction may increase learning. Although measures of retention did …

Certain ligand substitution reactions proceed to a complete displacement of the chelate ligand. Certain reactions proceed through a mechanism involving an initial fission of the tungsten-sulfur bond to afford a coordinatively-unsaturated intermediate which is rapidly attacked by chlorobenzene. The resulting solvated intermediate establishes an equilibrium which involves desolvation-solvation. Although main group organometallic chemistry has received a great deal of attention, this discussion will be centered in organotransition metal chemistry, in particular, metal carbonyls.

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 …

A survey instrument was mailed to a random sampling of wives of graduates of Southwestern Baptist Theological Seminary, Fort Worth, Texas, from 1982 to 1986. The purpose of the survey was to determine if wives of seminary graduates have ministry-related educational needs during the first five years of professional ministry that can be met by an educational program. Furthermore, demographic and attitudinal variables were investigated as potential contributing factors. Finally, suggestions were sought from the wives themselves for the implementation of an education program. For each wife, a total educational need score was calculated from her responses. Of the 240 respondents who completed the entire survey document, almost 42% of the respondents indicated a high educational need score with 5% producing a very high need score. Of the top twenty educational needs, only one was from the Theological/Christian Education category; the top three were all from Self Needs regarding stress management, dealing with criticism, and conflict resolution. The Chi Square Test for Independence was used to identify contributing factors, both demographic and attitudinal. The following were validated at the .05 level (unless indicated otherwise) as having a relationship to the wives' scores: Year of Husband's Graduation, Husband's Degree, Size of …

One objective of this study was to explore the intramolecular [2+2] cycloadditions of phenoxyketenes to carbonyl groups with isoflavones and benzofurans as target compounds. The other objective was to investigate the eyeloaddition reactions of rarely studied aminoketenes. The conversion of 2-(carboxyalkoxy)benzils to the corresponding phenoxyketenes leads to an intramolecular [2+2] cycloaddition to ultimately yield isoflavones and/or 3-aroylbenzofurans. The product distributions are dependent upon the substitution pattern in the original benzil acids. The initial cycloaddition products, β-lactones, are isolated in some instances while some β-lactones spontaneously underwent decarboxylation and could not be isolated. The ketene intermediate was demonstrated in the intramolecular reaction of benzil acids or ketoacids with sodium acetate and acetic anhydride. It is suggested that sodium acetate and acetic anhydride could serve as a source for the generation of ketenes directly from certain organic acids. The treatment of ketoacids with acetic anhydride and sodium acetate provides a simpler procedure to prepare benzofurans than going through the acid chloride with subsequent triethylamine dehydrochlorination to give the ketenes. N-Ary1-N-alkylaminoketenes were prepared for the first time from the corresponding glycine derivatives by using p-toluenesulfonyl chloride and triethylamine. These aminoketenes underwent in situ cycloadditions with cyclopentadiene, cycloheptene and cyclooctenes to yield only the …

In leading up to the proof, methods for constructing fields and finitely additive set functions are introduced with an application involving the Tagaki function given as an example. Also, non-absolutely continuous set functions are constructed using Banach limits and maximal filters.

This descriptive study of 45 multi-generational families contributes empirical knowledge about grandparent-grandchild relationships. A questionnaire was developed and completed by 74 subjects who were part of a randomly selected sample taken from a tax roll of homeowners over age 65 in Denton County, Texas. The responses provide information which expands the existing data base in the area of grandparenting. The study pinpoints areas in the grandparenting literature which need refinement and contributes data to those areas, rather than producing a set of conclusions. Areas as yet undocumented or inadequately documented in the literature are identified as the following: (a) family structural composition; (b) grandparents' personal characteristics; (c) selected aspects of grandparent-grandchild contact; and (d) satisfaction with the grandparent role. Data for these areas should help reveal factors having an impact on grandparent-grandchild relationships. A base for further investigation in these areas is established, and data are also analyzed to determine satisfaction or lack of satisfaction with grandparenting. The seventy-four subjects, from 45 households, included 44 grandmothers and 30 grandfathers. The number of generations per family was used as the base to report the findings. The study substantiates other research on grandparenting, particularly in the area of timing of grand-parenthood. Data …

The problem. --The problem in this study was to describe the issues arising in employment decisions appealed to the Texas Commissioner of Education. Decisions made in courts are binding on school officials, and they are published in law reporters found in most libraries. The Commissioner's decisions are also binding on school officials, but they are not published or widely reported. Thus, this important body of information may not reach those who are responsible for its application. Methods. --The decisions of the Commissioner were examined to determine the issues and the underlying rationale used by the Commissioner in the process of deciding the appeals. A series of data reductions allowed a determination of patterns found in the outcomes of the decisions which favored the employee and those which favored the school districts. The analysis produced a set of data from which implications for decision making could be drawn.

The purpose of this research was to study the effect of the conflict settlement process on the degree of expressed organizational commitment of employees in a collective bargaining setting. The research was done in a basic industry in northern Alabama. The instrument included the Organizational Commitment Questionnaire (OCQ) developed by Mowday, Porter, and Steers. Demographic variables measured were education, age, and sex. Main effects variables were tenure; union membership; and self-described experience with and feeling toward grievance/arbitration as a category 1 grievant, category 2 grievant, witness, and supervisor. Data were analyzed with hierarchical multiple regression. No statistically significant results were found. Limitations included the economic climate of the region and the industrial relations climate of the company.

The purpose of this study was to validate the Spanish version of the Dallas Pain Questionnaire (DPQ). Not only does the DPQ offer the potential of statistical and clinical diagnostic value but also is easily interpretable across cultural lines. No such instrument has presently been validated for the Mexican-American population. A total of 81 Spanish speaking subjects participated in this study. Of these subjects, 56 were classified as chronic pain patients by nature of their medical diagnosis and duration of pain. The 25 normal subjects were family members of the chronic pain patients and members of the Northern New Mexico Hispanic community chosen at random. Hypothesis one predicted that reliability would be obtained on Spanish speaking populations based on test-retest with correlation coefficients of the items. The second hypothesis predicted that the Spanish DPQ would have content validity or consistent internal structure on those items that measure the trait or behavior of interest based upon factor analysis approaches and internal consistency measures. Hypothesis three predicted that the Spanish version of the DPQ would significantly correlate with the English version of the DPQ on all four factors. All four hypotheses were supported. The Spanish DPQ showed reliability over time based on …

The problem of this study concerns the structure and content of teacher education programs in colleges and universities which are members of the Association of Christian Schools International (ACSI). A questionnaire was developed and consisted of four sections: (1) general background information of the respondent; (2) questions relating to the live NCATE standards using a Likert scale of 1 to 3, regarding respondent's teacher education program; (3) general information concerning Bible credit hours required, critical problems and factors considered in job placement of graduates; and (4) an opinionnaire concerning current issues in teacher education, significant changes in respondents' programs and cooperative and unusual program arrangements. One hundred questionnaires were mailed to the 100 collegiate members of ACSI in 1987. Of the 75 returned, 57 were usable. This represents a 57 percent response rate. Based on the information provided by the chairpersons participating in the study, the following conclusions are drawn relative to ACSI teacher education programs: 1. The influence of an outside agency, such as the National Council for the Accreditation of Teacher Education (NCATE), seems to benefit teacher education programs. 2. State accreditation of teacher education programs appears to be important to both NCATE and non-NCATE accredited programs. 3. …

The problem of this study was the needed administrative competencies of administrators in teacher training colleges in Kenya as perceived by administrators and faculty. A questionnaire (Inventory of Administrative Competencies) was mailed to principals, vice-principals, and four faculty members selected at random from sixteen teacher training colleges in Kenya. Ninety-six questionnaires were returned, yielding a return rate of 100 percent. Responses were analyzed using t-tests and one-way analyses of variance utilizing the F-test of the statistical test. A series of post hoc comparisons was made using Duncan's New Multiple Range Test to locate significant differences. Based on the analysis of data, it was concluded that both administrators and faculty considered the desired status of the competency very high. The administrators were performing below the desired status. Size of college was the major factor for the differences in perceptions of the respondents. Years of experience and educational background had little or no effect on the respondents' responses to the questionnaire. The following recommendations were made: A future study should investigate the perceived desired status and present performance ratings assigned to a validated set of competency statements of those levels of administrative activities not included in this study. Such a study would …

This study explored the importance attached to and the degree of satisfaction with 53 job aspects in the work environment of cooperative research center directors. A survey instrument was mailed to the 105 individuals identified as directors of research units that are (a) committed to multidisciplinary or engineering research, (b) organized as integral units of a university, and (c) supported and funded by industry and other sources. Responses were categorized into two groups: directors involved in NSF (National Science Foundation) Industry/University Cooperative Research Centers (I/UCRC), and directors involved in other types of cooperative research endeavors. A 69% response rate was obtained. One purpose of this study was to measure: (a) factors that influence job satisfaction; (b) factors likely to influence center performance; and (c) success factors in industry/university cooperative research. This study was also designed to: (a) compare job attitudes between the two groups of directors; (c) determine the relationship between measures of importance and satisfaction for each group; and (d) develop predictive models of centers' performance using collected data; Directors assign a high degree of importance and a low degree of satisfaction to the majority of the job aspects; and they tend to be somewhat dissatisfied with those factors …

The purpose of the study was to determine the direct influences of selected environmental, academic, and background factors as well as academic outcomes and expression of intent to leave on persistence or non-persistence of nontraditional students at a comprehensive community college in the Dallas County Community College District. The study applied a conceptual model of nontraditional undergraduate student attrition. Data for this study were collected during the Fall, 1987 semester from 312 first-year nontraditional students using the two-year institution questionnaires from the National Center for Higher Education Management Systems. In addition, follow-up surveys were administered to the 97 students who did not re—enroll for the Spring, 1988 semester. The data were analyzed using discriminant function, chi square, and product-moment correlation. For these nontraditional students, educational goal commitment, cumulative grade point average (GPA) and expression of intent to leave at the end of the semester had significant direct influence on persistence or non-persistence decisions. In contrast, environmental factors such as finances, employment status, and family responsibilities, and background factors such as high school academic performance, enrollment status and parents' education level did not directly influence dropout decisions. Nontraditional students reported receiving moderate to high levels of encouragement to remain in college …

The purposes of this study were to determine the career paths of women superintendents in the state of Texas and their school board members' perceptions of their levels of success. All women currently serving as superintendents of public schools in Texas, as well as all school board members of districts with women serving as superintendents were surveyed. The findings of this study indicate that the "typical" woman superintendent was hired from inside the district, with a master's degree. She was 48.3 years of age. Her first administrative position was the principalship and she moved directly from the principalship to the superintendency. The typical woman served in one district as superintendent. Her teaching and prior administrative experience was at the elementary level. Women superintendents perceived the position of teacher as the most beneficial experience prior to the superintendency. Women superintendents perceived leadership as the most important area of her professional development. School finance was the area perceived by women superintendents as needing to be more extensive in their professional development. Of the women superintendents who responded to this survey, 68.1 percent reported that they did not perceive discrimination in attaining the superintendency. Of the school board members who responded to this …

This study investigates and documents tenor/bass trombone solo performances at the Gewandhaus, Leipzig, East Germany, between 1821 and 1876. Included is the discussion of a newly discovered composition, the Concertino fur Bassposaune und Orchester, by Carl Heinrlch Meyer, which is the earliest concerto for the tenor/bass trombone. Its performance at the Gewandhaus in 1821 marked the beginning of the solo tradition for the tenor/bass trombone, and the Leipzig Gewandhaus became one of the leading centers of solo trombone performance for the next fifty years. The study includes background information on the rise of the virtuoso soloist in nineteenth-century Germany. It specifically focuses on Friedrlch August Belcke and Carl Traugott Queisser and their performances at the Gewandhaus. All solo trombone performances at the Gewandhaus in the nineteenth century have been documented, and specific information has been provided regarding the soloists, dates of performances and repertoire performed on the concerts. The paper includes a discussion of performance reviews from the Allgemeine Musfkalische Zeitung. The conclusion discusses the importance of solo trombone performance at the Gewandhaus, and the reason for its sudden decline after 1876.

This study examined the effects of self-monitoring behavior and health locus of control on improvement in a work hardening program. The subjects included 22 male and 18 female outpatients in a hospital-based rehabilitation program. Subjects were classified as having an internal or external health locus of control, and were randomly assigned to either a self-monitoring or a non-self-monitoring group. Improvement was assessed via objective performance data and self-ratings of perceived improvement. The results indicated that individuals identified as having an internal health locus of control did not show greater gains in physical functioning or perceived improvement relative to externally oriented individuals. Additionally, those subjects participating in self-monitoring activities were no different from non-self-monitoring subjects in terms of improvement in exercise activities or perceived improvement. The results also indicated no interaction between health locus of control and the presence or absence of self-monitoring. It was suggested that other factors such as workman's compensation, pain patient characteristics, low self-concept, and severe stress may have proved more powerful influences on patient improvement than internal health locus of control or self-monitoring. It was also suggested that rehabilitation programs might benefit from creating structured environments in which patients receive frequent staff feedback and reinforcement for …

The purpose of this study was to determine if students who participated in language arts remediation which was infused with critical thinking activities and metacognition would make greater gains in skills and achievement than those students who were remediated with a regular language arts curriculum. The population for this study was a group of at risk students who were fourteen to sixteen years old and who were participants in the 1987 summer Youth Opportunities Unlimited project at the University of North Texas. Their progress was measured with California Achievement Test and Iowa Test of Basic Skills pretests and posttests. The organization of the study includes a statement of the problem, a review of the literature, the methods and procedures used to collect the data, the analysis of data, and a summary of the findings, conclusions, educational implications, and recommendations tor additional research. Data from the eight hypotheses were treated with an analysis of covariance. The analysis of data revealed the following: 1. The infusion of critical thinking activities and metacognition did not improve students' skills or achievement in the following areas: spelling, capitalization, and punctuation. 2. The infusion of critical thinking activities and metacognition did not improve students' skills in …

The primary purpose of this study was to investigate the relationship of the Type A behavior pattern to Holland's occupational types and the career choice process. The Type A behavior pattern is characterized by high levels of achievement striving, time urgency, chronic activation and hostility, and is an independent risk factor in the development of coronary heart disease. It was hypothesized that Type A college students would be more attracted than Type B individuals to aspects of a future work environment which would reinforce their Type A behaviors. Previous research had suggested a relationship between the Type A behavior pattern and Holland's Enterprising and Investigative types (Martin, 1986). This study sought to replicate those findings, and further examine the nature of the Type A/B-Holland types relationship. Data were collected from undergraduate students in a variety of academic fields of study. Subjects completed a questionnaire packet consisting of the student version of the Jenkins Activity Survey (Jenkins, Rosenman, and Zyzanski, 1965; Glass, 1977), the Vocational Preference Inventory (Holland, 1985b), and a modified version of the Minnesota Job Description Questionnaire (Rosen, et al., 1972) . The findings demonstrated that the Type A/B pattern is a significant factor in the career choice process. …

The problem of this study was to determine if study habits can be used to predict academic achievement. The purpose of this study was to determine the relationships between selected study skill habits and attitudes and achievement of secondary students in English, mathematics, and spelling. The sample for this study consisted of 82 secondary school students participating in Upward Bound programs at two universities in the north Texas area in a six week period during the summer of 1988. Eighteen different high schools were represented in the study. The sizes of the schools ranged from small to very large. Instruments used were the Survey of Study Habits and Attitudes, (SSHA) the Stanford Test of Academic Skills, (TASK), and the Otis-Lennon Mental Abilities Test (OLMAT). The statistical analysis indicated that the four subscores of the SSHA are not accurate predictors of academic achievement. However, some of the correlations among the subscores for the SSHA and the TASK were significant. Most noteable of these were work methods and mathematics, teacher acceptance and mathematics, and work methods and spelling. The recommendation is made that the SSHA should not be used to predict academic achievement in Upward Bound programs. Improving study habits and attitudes …

This study examines the consequences of interdependence between Saudi Arabia and the United States from 1960 to 1978 as it relates to the concepts of cooperation and conflict. Research on interdependence focuses primarily on relations among Western countries and on whether interdependence is increasing or decreasing between them. It has rarely addressed relations between countries with different levels of economic development or the consequence of interdependence for international relations in terms of conflict and cooperation. Specifically, this study examines the following question: Does the level of interdependence between Saudi Arabia and the United States have any affect on the level of bilateral conflict and cooperation between the two countries? The hypotheses are tested using regression analysis. The primary conclusion is that increases in bilateral interdependence between Saudi Arabia and the United States from 1960 to 1978 produced increased cooperation as well as conflict.