Measurements of the target thickness dependence of the target x-ray production yield for incident fast heavy ions are reported for thin solid Cu targets as a function of both incident projectile atomic number and energy. The incident ions were F, Al, Si, S, and CI. The charge state of the incident ions was varied in each case to study the target x-ray production for projectiles which had an initial charge state, q, of q = Z₁, q = Z₁ - 1, and q < Z₁ - 1 for F, Al, Si, and S ions and q = Z₁ - 1 and q < Z₁ - 1 for C1 ions. The target thicknesses ranged from 2 to 183 ug/cm². In each case the Cu K x-ray yield exhibits a complex exponential dependence on target thickness. A two-component model which includes contributions to the target x-ray production due to ions with 0 and 1 K vacancies and a three-component model which includes contributions due to ions with 0, 1, and 2 K vacancies are developed to describe the observed target K x-ray yields. The two-component model for the C1 data and the three-component model for the F, Al, Si, S, and C1 …

This investigation was concerned with characterizing a tumor line induced and maintained in this laboratory. Various chemical assays, cell counts, and electron microscopy were the methods employed to characterize the blood of mice bearing the tumor at days 3, 6, 9, and 12 after injection of the 1.2 x 10^8 tumor cells.

This investigation was concerned with characterizing effects of this tumor line on lipid metabolism in DBA/lJ mice and serum protein levels and cellular changes in DBA/lJ and Swiss white mice. Total lipids, lipid phosphorus, neutral lipids, and changes in fatty acids were determined in liver, spleen, skin, and tumor of DBA/lJ mice bearing the lymphosarcoma at various days after injection of tumor cells.

The dissertation consists of four recitals: three solo recitals and one lecture recital. The repertoire of all the programs was intended to demonstrate a variety of music written originally for trombone. The lecture recital, "The Trombone in German and Austrian Concerted Church Music of the Baroque Period," was presented on July 3, 1974. The lecture was an attempt to illuminate the position of the trombone, both as an ensemble instrument and as a solo obbligato instrument, in church music of the Baroque period. The program included the performance of two works by Heinrich Schutz for bass voice, four trombones, and continuo; one work by Andreas Hammerschmidt for alto, bass, trombone, and continuo; and one work by Johann Joseph Fux for soprano, trombone, two violins, and continuo. A line of influence was traced from the Venetian composers Giovanni Gabrieli and Claudio Monteverdi, through Schiitz, Hammerschmidt, and Fux, to Mozart.

The purpose of this study was to investigate the effects of aspirational and dissociative reference group influence on consumer behavior. There are two ways in which behavior is influenced by reference groups. First, reference groups influence aspiration levels and therefore play a major role in producing satisfaction or frustration. Second, reference groups influence kinds of behavior, i.e., they establish approved patterns of behavior.

The problem was to develop a model of thought within the basic structure provided by general or "point-set" topology. To do this, it was necessary to make four basic assumptions. It was assumed that each individual possesses more than the classical five senses and that for each of these there exists a category of sensory data. Also, it was assumed that the Cartesian product of these categories formed a set M of thought elements for each individual, and that certain subsets of M provide support for cogitation. The relation, function, continuous function, and homeomorphism, which are used to relate sets in topology, are discussed as a possible ramification of the model for communication. The global properties of the homeomorphism and continuous function present each as a viable support for strong and meaningful communication between thought spaces of individuals.

The purpose of this study was to determine whether similarities exist in the perceptions of the roles of academic deans in community colleges. This study attempted to determine whether role expectations and perceptions reflected separate and distinct relationships, or if administrative patterns reflected an overlapping of responsibilities.

The major problem of this study was to compare the views of the role of the student in a science class as reported by college science educators and secondary science teachers of grades 6-8 and of grades 9-12. Analysis of individual items. The Q-sorts indicate that all groups in this study recommend greater emphasis on student activities, student discovery, student questions, teacher accepting students' new ideas and viewpoints, student freedom to ask any science question, student enjoyment of science, more time spent in doing things other than listening, student ease in getting equipment, student revealing likes and dislikes in science, student maintenance of science equipment and student use of laboratory equipment.

This study sought to determine whether any differences existed in the degree of relationship between the self-concepts of Negro and white college freshmen as measured by the mean scores achieved by them on the Tennessee Self Concept Scale and the nature of their performance in written expression as measured by the mean evaluations received by them for certain aspects of their written work.

The problem of this study was to determine through the use of taped media receptivity to dissonant or consonant information and to appraise those conditions which bring about change in attitude in light of dissonance theory.

Measurement of the line width parameters of a molecule is of interest because collision diameters can be calculated from them. This gives an effective size of the molecule when it is involved in interactions with other molecules. Further, specific types of interactions can be inferred from detailed information about the dependence of the line width upon pressure. In this paper, an experiment for measuring line width parameters for methyl cyanide is described and the results of the experiment are analyzed. This investigation was successful in obtaining precise values for the line width parameter for the J-J' = 0-1, J-J'= 1-2, and J-J' = 2-3 transitions of methyl cyanide which agree with experimental values of other researchers where available. It was found that standing waves were the dominant effect in the measurement of center frequency shift.

Line width parameters for a number of spectral lines in the pure rotational spectrum of formaldehyde (CH20) and formic acid (HCOOH) have been measured using a sourcemodulated microwave spectrograph. All transitions studied in this investigation were of the type ΔJ=O (i.e. Q-branch transitions), with ΔK-1=0 and ΔK+1 =+l. The center frequencies of the measured lines varied from 8662.0 MHz to 48612.70 MHz. The experimentally determined collision diameters for self broadening interactions involving HCOOH and CH2 Q molecules were found to be 2 - 27 per cent less than those calculated by the Murphy-Boggs theory of collision broadening. Much better agreement between a simplified broadening scheme for symmetric top molecules and the observed foreign-gas collision diameters is obtained by using Birnbaum's theory.

The purpose of this study was to report the evaluation ratings and describe the Arkansas NCA secondary schools, as indicated in the Summary Reports of the Evaluative Criteria, 1960 edition, and to compare ratings on all sections and divisions, section D-J, by size classifications.

This investigation has determined the presence of biological nitrogen fixation in two reservoirs in the southwestern United States: Lake Arlington and Lake Ray Hubbard. Subsequent tests have gathered baseline data on the effects of various biological, chemical, and physical parameters on in situ nitrogen fixation in these reservoirs. Of specific importance is the relationship between nitrogen fixation arid occasional blooms of blue-green algae which produce such problems as testes and odors in these water-supply impoundments.

This study examines the relations of white Baptists with racial and ethnic minorities in Texas from the beginning of organized Baptist work in Texas in the mid-nineteenth century, through the United States Supreme Court decision in the Brown v. Topeka case in 1954, Emphasizing the role of attitudes in forming actions, it examines the ideas of various leaders of the chief Baptist bodies in Texas: the artist General Convention of Texas, the Baptist Missionary Association of Texas and the American Baptist Convention. The minorities included in the work are the Negroes, the Mexican-Americans, non-Anglo-Saxon Europeans, American Indians, Orientals, and Jews. Several factors tend to justify a study of this subject. First, there is the prominence of race relations in the nation which has aroused interest in the effect which race relations have had upon affairs in Texas, Second, the widespread changes which have taken place in Texas during, the last two decades suggest the feasibility of a study of that phenomenon, and the fact that many consider the race problem to be a moral and religious issue indicates the relevance of the churches' relationships to these changes. As the largest religious denomination in the state, the Baptists offer a viable …

The purposes of this study were (1) to determine the immediate effects, if any, on marital adjustment of a marital enrichment program entitled Marital Skills Training. Program (MSTP); (2) to determine the residual effects, if any, on marital adjustment after MSTP had been terminated; and (3) to determine the differences, if any, in the effect on marital adjustment of an on-going group and extended session group using MSTP. Measures of marital communication and marital adjustment served as the dependent variables while the MSTP training served as the independent variable. Instruments used for data collection were the Marital Adjustment Test (Short Form), the Primary Communication Inventory, and the Semantic Differential. The study concluded that teaching marital communication skills in a conjoint couples' group in an on-going setting is an effective way to increase marital adjustment. However, the passage of time appears to be a necessary factor in integrating MSTP into behaviors which affect marital adjustment since the significant increase did not appear until five weeks following training and was found to exist only in the On-going training group.

The purpose of this study was to determine the extent of the relationship between four measures of educational experience, a measure of job performance, and six dimensions of job satisfaction for a population engaged in outside sales.

The problem with which this study was concerned was that of determining how the academic performance of entering college freshmen at Jarvis Christian College who participated in a summer preparatory and enrichment program would compare with the academic performance of entering college freshmen who did not participate in the program at the end of the school year.

In the southwestern United States there is a delicate balance between the existing grasslands and the rodent fauna. The purpose of this investigation was to determine the influence of secondary succession of native grasslands upon the ecology and distribution of small rodents. Two methods of determining the rodent species were plot quadrates and trap lines using Sherman live traps.

This study investigated the relationship of high school curriculum to performance in academic foundation college courses. The purposes of the study were twofold: First, to study the relationship of a practical arts high school curriculum as opposed to a college preparatory high school curriculum to performance in academic foundation college courses. Second, to analyze this relationship and its implications for high school students, parents, teachers, and counselors.

The problem of this study was to determine the value of certain selected aptitude test scores for predicting student achievement in Spanish, French, and German at North Texas State University. Particular emphasis was placed on freshmen enrolled in beginning courses.

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.

The purpose of this investigation is to compare the changes in the achievement and self-concept of students in CVAE programs which result from the use of group counseling and group-individual counseling.

The purposes of this study were to ascertain the relationship between the treatment and creativity post-test gains with independent variables of sex, grade, group, and Comprehensive Tests of Basic Skills total battery scores. Major conclusions include the following. 1. Girls appear to benefit more than boys from the Multiple Talent Approach to Teaching. 2. Fifth grade students appear to benefit more than third grade students from the Multiple Talent Approach to Teaching. 3. The creativity test score gains favoring the experimental students seem to justify the conclusion that it is potentially possible to enhance creative thinking through a teaching process.