Characteristic L-shell x rays of the five rare earths Pr, Sm, Eu, Gd, and Dy were studied in this work. The x rays were produced by ionization from 0.3 to 2.0 MeV protons from the 2.0 MV Van de Graaff at North Texas State University. Total L-shell ionization and x-ray production cross sections were measured for Sm and compared to the BEA, CBEA and PWBA theories. Total L-shell ionization cross sections were measured for Pr, Eu, Gd, and Dy and compared to the BEA, CBEA, and PWBA. The CBEA and PWBA fit the samarium data well for both ionization and x-ray production cross sections. The BEA was generally 40 per cent lower than the data. The CBEA and the PWBA also fit the ionization cross section data for Pr, Eu, Gd and Dy, while the BEA was generally 40 per cent lower than the data.
This working bibliography of 835 publications on the art of drawing is presented in five categories: Educational and Psychological, Historical, "How-to," Technical, and Techniques of Teaching Drawing. The latter category is annotated, offering a synthesis of the areas of art education and drawing. This bibliography is designed for scholars, artists, and teachers as well as students of the many facets of drawing.
The purpose of this study is to set forth the history of radio in Nigeria. Chapters explore the history of Nigeria, the history of Nigerian radio, and the present structure of Nigerian radio. In a final chapter, specific historical factors are isolated that have made Nigerian radio what it is today. The study concludes that the present structure of Nigerian radio is a direct product of the peculiar history of Nigeria as a former British Colony. Little can be done to solve the problems of Nigerian radio unless the problems of Nigeria itself are first solved.
This study describes certain characteristics of mature women students in a community college in a large metropolitan district. Three standardized instruments gathered data on self-actualization, self concept, and locus of control. A questionnaire collected demographic and education data as well as information on attitudes, motivations, problems encountered, and suggestions. The women perceived attitudes of their families as positive toward their education. They were motivated by desires to gain knowledge, get degrees, obtain promotions, and improve themselves. They cited themselves, long-time ambition, friends, and husbands as influential in motivating them to attend college. They selected this community college because of its convenience. The majority were married, had children, and were of the middle to upper-middle class. Over half were employed. Their average age was thirty-seven. They were active outside the home, although continuing to perform most traditionally feminine home responsibilities. The majority were part-time students, classified as freshmen. Education, business, nursing, accounting, and psychology were popular majors. Over half planned to obtain bachelor's degrees. Most felt they encountered no problems in pursuing their education; lack of sufficient time was their major complaint. Most were pleased with their community-college experience. their suggestions included special counseling, flexible class schedules, a club for mature students, and child care.
The purpose of this study was to observe the differences in English achievement, critical-thinking ability, and attitude toward subject attributable to two scheduling approaches -- "Concurrent" and "Intensive"--in the teaching of first-semester freshman English composition to community college students. Further, the study was initiated in order to provide factual information as a basis for administrative and instructional judgments affecting future planning for accelerated scheduling at the experimental institution. Two classes of first-semester freshman English composition, meeting three hours weekly for fifteen weeks, comprised the control group (Concurrent); two classes of first-semester freshman English composition, meeting nine hours weekly for five weeks, comprised the experimental group (Intensive). The same form of three criterion instruments was administered to both groups before and after the experimental treatment. The instruments were the Cooperative English Expression Test, the Watson-Glaser Critical Thinking Appraisal, and the Purdue Attitude Scale, Part A -- Attitude Toward Any Subject. Three instructors were involved in the experiment during the fall and spring semesters of the 1973-74 school year. Conventional methods of instruction, using the same course of study, were duplicated in all situations. Statistical analyses utilized in the study were analysis of covariance and multiple linear regression. It was felt that Intensive scheduling was superior to Concurrent as a means of promoting student-faculty harmony. Also, the frustrations experienced within the traditional classroom situation could be lessened by granting greater freedom from the constraints of hourly schedules and competing classes. With tensions reduced, English proficiency could be increased. Acting upon these suppositions, three hypotheses--related to each of the criterion measures-- were formulated. All hypotheses stated that the adjusted post-test scores for the experimental groups would be significantly greater than the adjusted post-test scores for the control groups. The results of the experiment, however, showed no significant difference for any of the hypotheses …
The lecture recital was given on August 9, 1974. Chorale partitas by Sweelinck, Scheidt, B051hm, and Walther were performed following a lecture on the chorale partita in the Baroque period. The lecture included a discussion of the instruments that the partitas were written for and the functions for which they were written. The works of Sweelinck and Scheidt and their influence on later composers were discussed. A number of lesser-known composers and their works were mentioned. Also, there was a discussion of works by well-known composers such as Bohm, Pachelbel, Buxtehude, Walther, and Bach. In addition to the lecture recital, three other public recitals were performed, all of which consisted of solo compositions for the organ. The first solo recital, including works of Buxtehude, Bach, Walther, Pepping, ?ranck, Alain, and Durufle, was performed on July 18, 1971. On August 13, 1972 the second solo recital was performed. Compositions by Greene, Stanley, Searle, Willan, Dandrieu, Roger-Ducasse, and Langlais were included in the program. The third solo recital, which included works by Sweelinck, Bach, Guillou, and Reubke, was performed on June 5, 1974. The four programs were recorded on magnetic tape and are filed with the written version of the lecture material as a part of the dissertation.
This study was a simple "before" and "after" attitude measurement experiment using an experimental group and a control group. The attitude measurements were made before and after the subjects in the experimental group were presented an informational briefing about the Air Force ROTC training program. Both the experimental group and the control group were subject to exposure to the Air Force mass communication advertising during the two-month study period. The results indicate that the increased knowledge gained by the experimental group through its exposure to the informational briefing caused a negative change of attitude within the group. However, the control group had no significant change of attitude during the study period even though more than 87 percent of those subjects were exposed to some form of Air Force advertising.
The problem of the study was to discover whether the selfconcepts of selected children in the primary grades could be enhanced. The purpose of the study was to determine the feasibility of using tape-recorded stories to enhance the self-concepts of selected primary grade children. A treatment of the Piers-Harris Children's Self Concept Scale for sex differences showed no significant differences for either the experimental or control groups. Some enhancement of the self-concepts of primary grade children may be possible by means of auditory non-teacher directed activities under properly controlled conditions. Several areas should be further investigated. A regular school year study should be designed to produce results applicable to a more general population. Such a study might answer questions regarding peer influences, the relationship between self-concept and academic achievement, the tolerance of primary grade children for prolonged treatment, and teacher attitude toward conducting such activities. Studies should be conducted to determine the relative value of simultaneous visual and auditory presentations for the enhancement of self-concept.
After independence on March 6, 1957, Ghana, under the late President Kwame Nkrumah, turned to diverse developmental activities. Economically, Ghana was on sound footing; the balance of payments was favorable and cocoa was yielding a good harvest. In 1967, Nkrumah was ousted due to his dictatorial rule. In this study the available primary and secondary sources were utilized. Primary sources were made available by the Ghana Embassy in Washington, D. C. and by friends and relatives in institutions of higher learning in Ghana. The study is divided into five chapters. Chapter I concerns itself with a geographical survey of the country, including land, climate, people, and natural resources. Chapter II explores political developments, and Chapter III examines some of the crucial economic problems. Chapter IV explores some economic progress and Chapter V makes suggestions, some of which may seem sordid and grim, but at least they offer a "stepping stone."
The problem of this study was to determine competencies which are necessary for effective administration by secondary school principals. The sources of data included a review of the literature and supplemental materials. The survey technique, employing a jury-validated questionnaire, was used to collect the perceptions of superintendents, principals, teachers, and college professors in the State of Texas. A total of 316 educators responded to the questionnaire. The development and findings of this study are presented in five chapters. Chapter I presents an introduction to the study. In Chapter II, a survey of the literature is reported. Chapter III contains details of the procedures employed in collecting data for the study. Chapter IV presents the data gathered through the use of the questionnaire. Chapter V presents the summary, findings, conclusions, and recommendations resulting from the study. The study identified eight general areas of competency for secondary school principals. Those competency areas were (1) organization and administration, (2) curriculum design and improvement, (3) the instructional process, (4) business and financial management, (5) student management, (6) personnel management, (7) facilities, equipment, and supplies, and (8) communications. A total of ninety-five competencies was identified from the literature and from communications with college professors and practicing school administrators. The six-member jury panel validated ninety-one competencies for inclusion on the survey questionnaire. Eighty-eight of the ninety-one competencies submitted to the educator sample achieved the criterion level for acceptance. An analysis of variance procedure revealed that significant differences among group means appeared at the .01 level on eleven of the competency statements. The competency-based preparation and certification concept appears to be sound and to be in harmony with other movements in American education. Many operational aspects need additional refinement; however, the concept holds considerable promise for improvement upon the traditional approaches to the preparation and certification of …
This study investigates the influence of the Austrian music theorist Heinrich Schenker on American music theory since 1940, including a survey of writings related to Schenker and theory textbooks displaying his influence. The Schenker influence on American music theory includes many journal articles on Schenker and his principal students. His methods are employed often in analytical discussions of various issues. In addition to numerous dissertations and theses written about Schenker, a number of textbooks are now based wholly or in part on his approach to musical understanding. The current trend towards accepting Schenker's theories is likely to continue as more people are exposed to his teachings.
The purpose of this study was to assess content and concurrent validity of the Torrance Tests of Creative Thinking (TTCT). The subjects were thirty-four art majors at North Texas State University between the ages of nineteen and thirty-nine. Content validity for the TTCT, as assessed by seven judges (art professors), was very high; concurrent validity was very low. Only one judge's ranking of the criterion was significantly intercorrelated with that of the other judges (p<.05). There were no significant rho correlations between the TTCT and the criterion (p<.05). The t-ratio differences between the males and females, for all tasks of the TTCT, were non-significant (p<.05). It was concluded that the TTCT were not appropriate for use with adult art majors.
This study investigates the motives behind the rhetorical strategies of rejection and acceptance used by John Bright in his four Parliamentary speeches opposing the Crimean War. Kenneth Burke's dramatistic pentad was used to evaluate the four speeches. An examination of the pentad's five elements reveals that Bright had six motives for opposing the war. To achieve his purpose in giving the speeches--to restore peace to England and the world--Bright' used the major rhetorical agencies of rejection and acceptance. Bright's act, his selection of agencies, and his purpose were all definitely influenced by the scene in which they occurred.
This study presents a picture of Martin Luther as a pioneer in mass communications. The text is divided into four sections and the conclusion; Martin Luther: man and his world, Luther and the German printing press, propaganda devices in Luther's Primary Reformation Treatises of 1520, and, propaganda and mass communications in Luther's liturgical reforms, religious broadsides, and preaching. The final remarks pertain to Luther's effect upon the reordering of society in the Western world.
This study examines ultrastructural changes occurring in seven- and fourteen-day populations of Trypanosorfa lewisi when 60 mg sodium salicylate is administered to the host. These changes were related to the host-immune response. Seven-day trypanosomes showed approximately 10 posterior volutin granules. Seven-day trypanosomes whose host had received salicylate exhibited. 30 to 40 volutin granules, and their posterior tip exhibited volutin granules in high numbers sometimes excluding other cellular elements. Fourteen-day trypanosones showed fewer volutin granules than seven-day, salicylate-treated ones. Salicylate treatment caused no additional ultrastructural alterations. Thus the volutin granules are not linked to the reproduction inhibiting antibody (ablast in) but may be involved in the formation of the trypanocidal antibodies.
This study has been undertaken to investigate the impact of group discussion upon sociometric status, selfactualization, and number of stated problems with respect to student nurses. The purposes of this study were (1) to determine whether group discussion will enhance sociometric status of student nurses, (2) to determine whether group discussion will positively affect self-actualization of student nurses, (3) to determine whether group discussion will lessen the number of stated problems of student nurses, and (4) to examine the group process and interaction of the group discussion sessions.
This study is an exploration into the Romantics' transcendence of the dualistic world view and their attainment of a holistic vision. Chapter I formulates a dichotomy between the archaic (sacrosanct) world view and the modern (mechanistic) world view. Chapter II discusses the reality of the religious experience in Romanticism. Chapter III elucidates the Romantics' use of mystic myths and noetic symbols. Chapter IV treats the Romantic transcendence of the dualistic world view and the problems of expressing the transcendental experience in aesthetic form. Supporting theories include those of Henri Bergson, Martin Buber, Samuel Taylor Coleridge, and M. H. Abrams. The study concludes by assessing the validity of the Romantic vision in the modern world.
The present study was designed to investigate whether a good reader, by the fifth grade, will have attained sufficient knowledge of the language structure to enable him to more exactly and more appropriately reconstruct mutilated texts than a poor reader, matched for verbal intelligence level. Four 250-word cloze-treated passages were administered to twelve deficient and twelve non-deficient sixth grade readers, matched according to sex and the verbal portion of the Wechsler Intelligence Scale for Children. Analyses of variance failed to show any significant differences between good and poor readers except for a weak indication that good readers produced more exact replacements.
The problem with which this investigation is concerned is the comparison of the effects of two group counseling approaches upon selected counselee characteristics. The purpose of the study was the determination of the relative effectiveness of counselor-led group counseling and leaderless group counseling upon anxiety, self-concept, and study habits and attitudes among high school seniors. Forty of ninety-six Russellville, Arkansas, high school seniors who were referred for group counseling by their high school teachers and counselors were randomly selected as subjects. Thirty of the students were assigned in a random manner to three ten-member experimental groups. Ten of the students were assigned in a random manner to a control group. Following treatment each group was reduced to eight subjects each because of poor participation by a few subjects in each group. The IPAT Anxiety Scale, the Tennessee Self-Concept Scale, and the Survey of Study Habits and Attitudes were administered to all subjects prior to and after ten weeks of treatment.
This study investigates the influence of inner-city and suburban student teaching upon adjustment and effectiveness of first-year elementary teachers, with secondary attention to their personal and professional problems of adjustment to their initial teaching location. The fifty-five subjects of this study were first-year, inner-city and suburban teachers in the Dallas area. Except for two Black females and three Anglo males, all were Anglo females. The findings of this study support the following conclusions 1. Student-teaching locale should not be the determining factor in deciding the type of school for first-year teachers. 2. Effective inner-city student teachers may be expected to be highly effective teachers in both inner-city schools and those in other locales. 3. Successful student-teaching experiences, regardless of location, can be expected to produce well-adjusted, effective teachers. 4. It can be anticipated that inner-city teachers will experience a negative change in optimism, attitudes toward teaching, general adjustment and mental health during their initial year of teaching. 5. Both suburban and inner-city teachers who enjoyed successful student-teaching experiences can be expected to have good self-perception, empathy, a favorable view of children, confidence regarding classroom discipline, and effectiveness as a teacher.
Initially, this work recognizes that college students often fail to understand or to appreciate the language of literature; therefore, a proposal has been developed that incorporates the typical methods and media of two academic areas--literature and oral interpretation--into a synchronized dual approach to the study of literature. Chapter I discusses contemporary problems of literacy in general; Chapter II explores the traditional teaching approaches of English and oral interpretation; and Chapter III develops a possible-literary communal effort by outlining a survey course in British Literature and presenting a series of exemplificative Writers Theatre scripts.Chapter IV reviews the associative problems that apparently exist between oral language and the written symbol and recommends that a companion project might demonstrate more fully the efficacy of an integrative approach to the teaching of writing.
The problem with which this investigation was concerned was the determination of group perception profiles of selected higher education faculties. These group perception profiles were based upon faculty perceptions of the ten most important criteria considered in evaluating faculty members for purposes of rank, promotion, salary, and tenure. Also, the study determined whether or not cluster profiles existed at three levels or types of institutions-- university, liberal arts, and junior college--and how such profiles differed between levels. This study had several purposes. The first was to determine how group perception profiles of higher education faculties clustered in response to perceptions of criteria considered in evaluating faculty members. The second was to determine if similar clusters existed at three types of institutions. A third was to determine differences in the proportion of teachers belonging to each identifiable cluster at each level of institution. The fourth was to determine differences in profiles according to proportions of teachers across common clusters. And finally, the fifth was to determine differences in profiles among faculty members in identified clusters at each institutional level according to biographical characteristics: age, rank, teaching experience, seniority, and highest degree held.
This study compares present policies and procedures for selection of school board members in districts of The Council of Great City Schools with those advocated by board members, professional educators, and representatives of lay organizations. To determine present selection policies for school board members, a questionnaire was sent to the business manager of each participating district. Replies were received from twenty-one of the districts and presented in tables including number and percentage of respondents for each item. To determine opinions of board members, professional educators, and members of lay organizations, a thirty-five-item questionnaire was mailed to 190 board members, 22 school superintendents, 19 college professors, 19 PTA representatives, 22 NAACP representatives, and 11 chamber of commerce representatives. After a return of 200 usable questionnaires, data were presented in separate tables including number of respondents and percentage of respondents. Using the contingency coefficient technique for statistical analysis, null hypotheses were formulated to test relationships between the opinion of respondent groups and selection policies and procedures actually in use. The chi square test was applied to test the relationships, with the .05 level of significance as the criterion. Results were tabulated collectively. Tabulated results indicate that board members should be elected at general elections on a non-partisan basis representing at-large districts, should serve four-year, overlapping, unrestricted terms, should meet local legal requirements, should receive some type of compensation, and should not represent occupational and other special interest groups. Based on this survey, it is recommended that a similar study be made in districts with less population than those districts studied to determine if policies and'procedures for selection of school board members in the districts are comparable.
Patterns of participation in formal organizations by residents of a rural non-farm community are compared with those of residents in an urban community. Multi-stage random sampling is utilized in Denton to select those interviewed. In Krum, each residence was numbered and a table of random numbers was used to select households. Chapter One includes the study's purpose, review of the literature, and statement of the hypothesis. Methodology is discussed in the second chapter. Chapter Three focuses on findings and discussions. Data indicate that in the urban community social class, age, homeownership, and length of residency are related to amount of participation. In the rural non-0farm community social class is related to participation. Residents in the urban community participate more than those in the rural non-farm community.
This investigation is concerned with the problem of determining the variation of test achievement obtained by students enrolled on a MWF and a TTh schedule. The purpose of the study is to determine if either schedule is superior. The Ss were students enrolled in an Introductory Psychology course at North Texas State University. A t test was administered to the experimental data. The experimental hypothesis of an expected higher test achievement by students enrolled in the TTh schedule was rejected. It was concluded that test achievement for this study was not affected by scheduling.
Both revenues and earnings of diversified firms are increasingly being reported, to the government and the public, on a subentity basis. Adequate criterial foundations do not exist to permit the effective general prescription of specific segment delineations, nor is it known whether such criterial assists can be usefully developed.Demands for segmentation in financial reports are currently intense. Actual reporting practices are largely nonstandardized as to either the definition of segments employed or, the disclosure modes used to present them. Neither conceptual nor theoretical supports are now adequate in guidance to the forms and levels of segmentation activity now required. Prerequisite to effective development of such supports is an-adequate understanding of the corporate diversification phenomenon itself. This dissertation project investigates and analyzes the nature of corporate diversification, as manifested in (1) its historical evolution; (2) general comprehensions of the phenomenon, as evidenced in published opinions and conceptual reasoning schemes of both authoritative experts and lay investors; and (3) formal research by others. Additionally, the results of these investigations and analyses are developed into conceptual schemes and theoretical frameworks, at moderate levels of abstraction.
This study is an analysis of trends in public higher education and their probability and desirability for the 1970's as perceived by persons in positions of leadership in public higher education. The purposes of this study were (1) to identify the major trends in public higher education in the United States, (2) to assess the opinions of persons in positions of leadership in the public four-year colleges and universities in Texas, (3) to determine if there were significant differences in opinions of the probability and desirability of trends for the 1970's, and (4) to develop projections of the most probable and the most desirable trends for the 1970's.
This study investigates and evaluates the effects of an eighteen-hour weekend encounter group and three twelve-week groups--a weekly counseling group, a Bible discussion group, and a church attendance group, upon selected personality and behavioral variables, group morale and social integration. Subjects were forty-eight volunteers from a 250-member Protestant, evangelical church in a suburb of a Texas city of five-hundred thousand people. Six men and six women were randomly assigned to each of the four groups. Data analyzed were the pre-, post-, and post-post-experiment scores of the Personal Orientation Inventory, the Sixteen Personality Factor Questionnaire, and the sociometric variables based on Bonney's "Criteria for a Better Group on Sociometric Scales". The .05 level of significance was required for rejection of the null hypotheses. The statistical analyses were accomplished by applying a one-way analysis of co-variance design to the raw scores from the Personal Orientation Inventory, the Sixteen Personality Factor Questionnaire, and two of the three sociometric variables--mutual choices and opposite sex choices. The sociometric variable, choices between upper and lower quarters, was computed with the z formula. The sociometric data, mutuals and opposite sex choices on the encounter group, were further analyzed using the single-factor analysis of variance with repeated measures. It was hypothesized that the participants in the weekend encounter group would show a significantly greater change in self-actualization, positive personality and behavioral changes, social integration and group morale than would the participants in the other groups. It was further hypothesized that the weekly counseling group would show a significantly greater change in the selected variables, social integration and group morale, than would the Bible discussion or church attendance groups. It was also hypothesized that the Bible discussion group would show a significantly greater change in the selected variables, social integration and group morale than would the church attendance group. …
Doctoral graduates of the program in Higher Education, Division of Higher Education, North Texas State University, from the fall of 1969 through spring, 1973, were selected as subjects for an evaluation of the program. To appraise the effectiveness of the program, the evaluation attempted to: (1) determine how the graduates viewed various aspects of their doctoral program and experiences at North Texas State University; (2) appraise the effectiveness of the doctoral program in Higher Education in light of the career goals and needs of the graduates and how the program served those needs; (3) present conclusions and recommendations based on the findings of the study which could aid in the administration of the program, provide information for planning new programs and policies, or in supporting those already in existence. A questionnaire was developed and used as the data-gathering instrument, after being revised according to suggestions given by a jury. The questionnaire was mailed to graduates on August 17, 1973, and a follow-up letter was mailed on September 19, 1973, to those non-respondents who could be identified. Of the total number of graduates who received the questionnaire, 69 (71 per cent) responded. Data contained in the questionnaires were numerically coded and recorded on keypunch worksheets. With the aid of the staff from the N.T.S.U. Computing Center, print-outs were produced from the worksheets which contained tabulated data. Tables were made from the data for analysis and interpretation. Analysis of the data led to the following conclusions. The program is producing graduates who have a marketable education with most of them teaching in four-year colleges and universities. The emphases on college teaching and administration are major strengths of the program and graduates rate a strong degree of satisfaction with the major program components, structure and curriculum. Competencies gained in educational research and statistics …
The key to Reconstruction for both blacks and whites was black suffrage. On one hand this vote made possible the elevation of black political leaders to positions of prominence in the reorganization of the South after the Civil War. For southern whites, on the other hand, black participation in the Reconstruction governments discredited the positive accomplishments of those regimes and led to the evolution of a systematized white rejection of the black as a positive force in southern politics. For white contemporaries and subsequent historians, the black political leader became the exemplar of all that was reprehensible about the period. Stereotyped patterns, developed to eliminate black influence, prevented any examination of the actual role played by these men in the reconstruction process. This study is partially a synthesis of recent scholarly research on specific aspects of the black political role and the careers of individual political leaders. Additional research included examination of a number of manuscript collections in the Library of Congress and the Southern Historical Collection at the University of North Carolina, state and federal government documents, and contemporary newspapers. On the basis of all these sources, this study evaluates the nature of black political leadership and its impact on the reconstruction process in all the ten states which were subject to the provisions of congressional reconstruction legislation. The topic is developed chronologically, beginning with the status of blacks at the end of the Civil War and their search for identity as citizens. Black leadership emerged early in the various rallies and black conventions of 1865 and early 1866. With the passage in March 1867 of reconstruction legislation establishing black suffrage as the basis for restoration of the former Confederate states, black leaders played a crucial role in the development of the southern Republican party and the registration of …
"The Crystalline Sense" is a composition in one movement for chamber orchestra with the following instrumentation: flute, oboe, clarinet in Bb (doubling bass clarinet in Bb), bassoon, horn in F, trumpet in Bb, trombone, percussion and strings. The composition is approximately nine minutes in length. The goals of the work are (1) to employ intra-sectional practices, (2) to derive all rhythmic ideas from the main themes, (3) to combine certain elements of chromatic, whole tone, and certain triadic structures into a valid compositional technique effective in both vertical and horizontal situations, (4) and to produce a piece of music of moderate difficulty which fully exposes each instrument technically and lyrically.
Rates and energies of consumption (C), egestion (F), assimilation (A), respiration (R), growth (Pg), production of exuviae (Pev), and production of egg masses (Pr) and associated efficiencies, and the effects of seasonal temperature, weight and metamorphic stage upon these factors were examined for a typical individual and cohort of Corydalus cornutus (L.) from a stream in North-Central Texas (330 23'N, 97*5'W). Dobson flies are apparently univoltine in the study area, with 11 larval instars. Emergence, oviposition and hatching occur from late May to August. The typical dobson fly hatches in mid-June, grows rapidly until November, and resumes rapid growth in March, reaching full adult size prior to leaving the stream to pupate in early June. Adult females must feed to provide energy to yolk eggs, produce egg-mass coverings and continue somatic maintenance during their week of reproductive endeavors. Metabolic compensation enables larval dobson flies to maintain preferred and fairly constant rates of R during winter (201-451 pl g-1 h~1; 5-15 C) and summer (985-1173 pl g- h1; 20-30 C); with a seasonal acclimatization change point between 15-20 C. Reduction of rates of R through undercompensation during the winter when food is scarce and through partial compensation at high temperatures during the summer conserves energy which is allocated to P, resulting in high ratios of P/R (1.94) and P/A (66%) for the individual larva and, to a lesser degree, for the cohort (P/R = 1.07, P/A = 52.3%, P/B = 9.96). Rates of C, F, A and R, but not assimilation efficiency, were influenced by temperature and size. The energy budget for a typical dobson fly during the 47 wk as a larva was: C = 4167, A = 3442, F = 725, Pg = 2075, Pev = 198, and R = 1169. Ova respired 0.107 cal wk-1, prepupae 357 cal …
The structures of the new pyrethroids were elucidated utilizing nuclear magnetic spectroscopy and elemental analysis. The biological activity of the pyrethroids has been evaluated for houseflies and yellow fever mosquitoes. A correlation of increase in rapid knockdown and toxicity with decrease in size of halogen has been made. The most effective compound, the difluorovinyl ester, has a toxicity of 123 times greater than pyrethrins. This degree of toxicity has not previously been reported for a 5-benzyl-3-furanmethyl ester. The relative lipophilicities of the dihalovinyl esters, Rm, have been determined by reverse phase partition chromatography. The R values for the dihalo esters correlate with their m effectiveness as rapid knockdown agents. The least lipophilic compound, the difluorovinyl ester, possessed the highest knockdown in this dihalovinyl ester series. The difluorovinyl ester has incorporated a high level of toxicity while maintaining excellent effectiveness as a knockdown agent against houseflies. This combination of high knockdown and high toxicity in a single compound has not been previously reported. Several other pyrethroids were synthesized and evaluated for knockdown and toxicity, in order to make specific comparisons with pyrethroids of known effectiveness. The replacement of the isobutenyl group of the chrysanthemates by the dihalovinyl group has been effective against houseflies and yellow fever mosquitoes in enhancing or maintaining toxicity and knockdown in every pyrethroid series investigated. In the allethronyl series, this dihalovinyl replacement has resulted in a 12-fold increase in rapid knockdown activity against mosquitoes.
This study isolates the impact of certain factors upon the decision making of the United States Supreme Court. Selected group theory methodology is applied to the Court's decisions from 1969 through 1973. The group structure of the Court, the impact of personnel change, and the effect of judicial attitudes on public policy are explored and statistically measured with a chisquare. Schubert's bloc analysis and a Guttman scale are used to order the data. Conclusions include that two stable blocs existed on the Court during these years. Personnel change is demonstrated as causative of alterations in judicial behavior. Seven of eight groups of cases are shown to stimulate values of the Justices. Suggestions are made for further research.
In this study of vocal chamber duets the various approaches used in duet writing from the late sixteenth century through the nineteenth are examined. Various meanings attributed to the terms "vocal duet" and "chamber duet" are considered, and an appropriate delineation of the genre is determined. The study begins with examination of bicinia, dialogues, and concertato madrigals of the late sixteenth century, three kinds of works related to the continuing lines of interest in duets of later centuries: pedagogical duets, dialogue duets, and duets shaped by general musical trends. After a foundation has been laid in the sixteenth century, examples of duets of various kinds for the next three centuries are considered. It is seen that a discontinuity in the history of the vocal chamber duet occurs during the Classical period. Operatic and chamber duets prior to this time show great similarities in style. Operatic and chamber duets of the nineteenth century show distinct differences in style. At the same time that differences between operatic and chamber duets were increased, the differences between solo and duet chamber works by the same composer were decreased.
The purpose of this study was to test the hypothesis that time-keeping devices influence our perception of time in a way apart from their usual role of telling time. The subjects obtained for this project consisted of forty-two students enrolled in freshman psychology courses at North Texas State University.
Much has been done to promote the use of management techniques designed to develop human resources within the business enterprise. Unfortunately, most of these procedures are applied after the individual has become an employee of the firm. Similar management techniques are needed for the proper recruitment and placement of each new employee. A major source of employee dissatisfaction and turnover lies in the incapacity of some jobs to satisfy the aspirations and job values of certain types of employees. Therefore, one key to employment stability for the college graduate is the relative compatibility between his job values and the capacity of the job to provide fulfillment for those aspirations. Much needs to be done in the areas of predicting the job values of a college senior and matching the individual graduate with that job which is most apt to provide a productive and meaningful career. The purpose of this study is to investigate the relationships between grade point averages, job values, and career decisions as perceived by the Ma3 1973, graduating seniors of the College of Business Administration at North Texas State University, their professors, and their employment recruiters. The students provided background data such as grade point average, SAT scores, and marital status in addition to Likert-type rankings of family experiences and job values. The professors also provided rankings of their job values. Those employers who had interviewed seniors through the Business Employment Services office during the spring semester of 1973 ranked the same job values and selected student characteristics in accordance with the emphasis placed upon them during recruitment. Significant relationships were identified through the calculation of product-moment correlation coefficients. Comparisons were made utilizing t-tests of significance.
The work described in this thesis was undertaken to study the reasons why Azotobacter vinelandii ATCC 12837 after incubation in Burk's nitrogen-free liquid will not form as many colonies when plated on Difco Tryptic Soy Agar as when planted on Burk's nitrogen-free agar. The difference in growth of A. vinelandii on the two agars was established by performing viable cell-plate counts. The difference in growth was most apparent at 24-hours incubation of the Burk's liquid-media cultures. Phase contrast microscopic observations of Tryptic Soy media cultures of A. vinelandii disclosed the regular formation of fungoid cells at early stages of growth of the bacteria, 18 to 24 hours.
The problem of this study was to examine the community, stockholder, and consumer public relations of the Dr Pepper Company. The data were collected by an examination of the major areas in Dr Pepper's public relations department. Detailed questionnaires were used in interviewing the department's head, Harry Ellis, and his assistant, Jim Ball. Follow-up interviews clarified Ball's and Ellis's responses to the questionnaires. Chapter I introduces the thesis. Chapter II presents information about Dr Pepper's consumer relations, Chapter III presents data about stockholder relations, and Chapter IV presents information about community relations. Chapter V summarizes the study and makes conclusions and recommendations. Dr Pepper's overriding weakness was the lack of pre- or post-testing of its public relations efforts; and its strengths are that it has never been accused of doing misleading advertising and it labels its products so that the consumer knows its content. The recommendation was made to expand and departmentalize the public relations operation.
This study explores the profound influence of the South on the poetry of Robert Penn Warren and creates an oral interpretation lecture-recital script illustrating this influences. The study shows Warren's poetry to be worthy of consideration. The study also defines oral interpretation, lecture recital, and poet-centered programs. Included with a biographical sketch of Warren is a chronological listing of works and events in his life. There are discussions of several poems which illustrate the influence of the Southern landscape and several which show the influence of the Southern people. The forty-five minute lecture-recital script is included as an appendix,
The problem investigated in this paper is the unlikely friendship of Swift and Bolingbroke. The purpose is to assess the reaction of Swift to the ethics of Bolingbroke. Under examination are the conflicting opinions of these men in regard to morals, money, and ethics. Chapter I contains immoral actions of Bolingbroke. Chapter II shows Swift's manner of life and his reaction to Bolingbroke's immorality. Chapter III gives Swift's attitude to money, Bolingbroke's attitude, and Swift's reaction to Bolingbroke's opinion. Chapter IV contains Bolingbroke's ethical philosophy. And Chapter V reveals Swift's religious views and his reaction to Bolingbroke's ethics. The conclusion is that Swift disapproved of Bolingbroke's ethics, but did not break with him on account of them.
The present study explored the possibility of applying Koppitz's developmental scoring techniques of mental maturity to retarded adults. The following hypotheses were tested: 1) that there is a significant correlation between the Koppitz HFD Test scores and the WAIS Full Scale scores; 2) that the correlation between the Koppitz HFD Test scores and the WAIS Performance Scale scores is also significant. Statistical computations did confirm the latter hypothesis but not the former one.
The problem of this investigation is to determine the relationships between certain cognitive, conative, and demographic variables and student ratings of instructors and introductory economics courses at North Texas State University. In addition, the study seeks to determine whether significant, interactive effects exist among the seventeen main variables: pretest, posttest, sex, age, college major, required course, actual grade, residence, SAT, socioeconomic class, Opinionation, Dogmatism, instructor, course rating, instructor rating, expected grade, and attitude. The principal sources of data are students' test scores on the Test of Understanding in College Economics, Rokeach Scales of Opinionation and Dogmatism, Modified Purdue Rating Scale, Personal Data Sheet with Hollingshead Index, and Questionnaire on Student Attitude Toward Economics-Revised. The organization of the study includes a statement of the problems, a review of the literature related to student ratings of courses and instructors, the ethodology used in the statistical analysis of the data, an analysis of the data, and the findings, conclusions, implications, and recommendations for additional research. Chapter I introduces the background and significance of the problems. Hypotheses are stated in the research form, terms in the study are defined, and limitations are delineated. Chapter II is a topically-arranged review of the related literature, including both experimental and descriptive studies. Literature is included on student ratings of courses and instructors, attitude, achievement, grades (actual and expected), and student characteristics. Chapter III includes information on the population of the study, the Test of Understanding in College Economics, Modified Purdue Rating Scale for College Instructors, the Rokeach Dogmatism and Opinionation Scales, the Questionnaire on Student Attitude Toward Economics-Revised, Hollingshead Two-Factor Index of Social Position, the variables used in each study, methods of data collection, and stepwise multiple linear regression, the basic statistical design employed in the study, with a nonlinearity factor added. In Chapter IV, data were …
The purpose of the investigation was to determine the effect of the tonic neck posture upon fatigue induced by exhaustive exercise of the knee extensor muscles of college women. The subjects were college females enrolled in physical education activity classes at North Texas State University. The F ratio was used to determine significance of the difference in fatigue measures in the three head positions. The results of the present investigation revealed no statistically significant difference between the three head positions with respect to their influence on endurance of the leg extensors. Conclusions were that the tonic neck reflex does not facilitate or inhibit leg extensor endurance.
This study presents the findings of an investigation of the effects of two different treatments, progressive relaxation and cerebral electrotherapy, on heart rate. With progressive relaxation, the subject relaxes by following instructions. With cerebral electrotherapy, relaxation is due to an external source of stimulation. Decreases in heart rate for subjects receiving progressive relaxation were compared with decreases for subjects receiving cerebral electrotherapy. A placebo group was used to evaluate the effects of both treatments independently. While decreases in heart rate were observed for both treatments, only progressive relaxation produced decreases significantly greater than those of the placebo group. However, decreases in heart rate produced by progressive relaxation were not significantly greater than decreases produced by cerebral electrotherapy.
The thesis consists of a selection of original poems and an essay on the literary relationship between Matthew Arnold and T. S. Eliot. The poems are loosely related in theme; they are the responses of the poet to the various forces in his upbringing, such as literature, religion and the American Southwest. The essay compares the literary criticism of Arnold and Eliot, the foremost critics of their respective periods, with special attention to Eliot's criticism of Arnold. The conclusion is that despite this criticism Eliot accepted Arnold's major critical precepts and perpetuated in his own work Arnold's central concerns about literature and culture.
This investigation is concerned with determining the value, if any, of certain curiosity constructs and thought skill experiences upon "raw score" responses of black sixth grade pupils to selected standardized and experimenter made tests. The major purpose of this study is to determine whether the curiosity levels of black children will be increased and if gains will be made in reading comprehension and responses when selected questioning procedures are used. The study is confined to teacher-directed instructional situations where pupils are engaged in reading acts.
The problem with which this investigation is concerned is that of examining the association between personality as measured by a standard scale and the extent of projection in a social perception role projection task. The investigation assumes that perceptions regarding environment are systematically related to choice behavior. In this regard, the research examines those specific dimensions of personality that facilitate or inhibit social perception. Chapter I presents an introduction to the problem. Additionally, the background of the problem, purpose of the study, the hypotheses, the limits of the study, and the assumptions are given. Chapter II is the methodology. The nature of the subjects, the procedure, the research instrument and the methodological steps used for analysis of data are explained. Results of the investigation are given in Chapter III, while Chapter IV presents a discussion of the results, including the conclusions, implications of the study, and suggestions for further research.
Using a micro-potometric method, it was ,found that X-irradiation (400 R - 18 Kr) of the shoots of the onion plant Allium cepa will produce an immediate, pronounced (200%) and reversible enhancement of the water uptake by the shielded roots. Unfiltered X-irradiation.(1200 R/min., 120 KVP, 5 ma) was delivered at right angles to the shoot. Readings were taken at 10-minute intervals before, and immediately following X-irradiation. The greatest enhancement occurred at dosages between 4.8 Kr (150%) and 6.0 Kr (190%). The data indicate that the irradiation effect on water uptake was a physical rather than a metabolic one.
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