The adenylate energy charge values of twenty bacteria isolated from soil and cultured in a medium consisting of soil and distilled water were determined by the luciferin-luciferase bioluminescense method. The purpose of this study was to examine the growth and energy charge values of these organisms in soil extract medium, and to determine what effect the addition of glucose has on their energy charge values. Three of the organisms employed in this study showed energy charge values similar to those reported for bacteria grown in enriched media. The remainder of the isolates demonstrated low energy charge values, and scant growth in the soil medium.

Dissociation constants for alternate dirmcleotide substrates and competitive inhibitors suggest that the dinucleotide binding site of the Ascaris suum NAD-malic enzyme is hydrophobic in the vicinity of the nicotinamide ring. Changes in the divalent metal ion activator from Mg^2+ to Mn^2+ or Cd^2+ results in a decrease in the dinucleotide affinity and an increase in the affinity for malate. Primary deuterium and 13-C isotope effects obtained with the different metal ions suggest either a change in the transition state structure for the hydride transfer or decarboxylation steps or both. Deuterium isotope effects are finite whether reactants are maintained at saturating or limiting concentrations with all the metal ions and dinucleotide substrates used. With Cd^2+ as the divalent metal ion, inactivation of the enzyme occurs whether enzyme alone is present or is turning over. Upon inactivation only Cd^2+ ions are bound to the enzyme which becomes denatured. Modification of the enzyme to give an SCN-enzyme decreases the ability of Cd^2+ to cause inactivation. The modified enzyme generally exhibits increases in K_NAD and K_i_metai and decreases in V_max as the metal size increases from Mg^2+ to Mn^2+ or Cd^2+, indicative of crowding in the site. In all cases, affinity for malate greatly …

Freshmen at Sul Ross State University are required to take tests which are used for placement purposes. One of the tests given is the Nelson-Denny Reading Test which measures comprehension, vocabulary, and reading rate. The scores are used with American College Test or Standard Achievement Test scores to place students in either remedial or regular freshman English. Remedial students, who score below the tenth-grade competency level, are placed in English 1300. Regular students are placed in English 1301 or 1302. Twelve studies were found which had been done in this area since 1980. One was directly related to this study. The Anglo and Hispanic population of the freshman class of 1987 was tested. Blacks were not included as they comprised less than 9 percent of the freshman class. There were 69 students in the experimental group and 162 in the control group. A pretest-posttest design was used. A three-way analysis of variance set up data for statistical testing. The Alpha level was set at .05. The findings indicate a significant difference for Hypothesis 1, which predicted no significant difference in the posttest performance of students required to take English 1300 and the pretest performance of students who were not. Therefore …

Waste-to-energy has become an attractive alternative to landfills. One concern in this development is the release of pollutants in the combustion process. The binder enhanced d-RDF pellets satisfy the requirements of environmental acceptance, chemical/biological stability, and being storeable. The acid gas emissions of combusting d-RDF pellets with sulfur-rich coal were analyzed by ion chromatography and decreased when d-RDF pellets were utilized. The results imply the possibility of using d-RDF pellets to substitute for sulfur-rich coal as fuel, and also substantiate the effectiveness of a binder, calcium hydroxide, in decreasing emissions of SOx. In order to perform the analysis of the combustion sample, sampling and sample pretreatment methods prior to the IC analysis and the first derivative detection mode in IC are investigated as well. At least two trapping reagents are necessary for collecting acid gases: one for hydrogen halides, and the other for NOx and SOx. Factors affecting the absorption of acid gases are studied, and the strength of an oxidizing agent is the main factor affecting the collection of NOx and SOx. The absorption preference series of acid gases are determined and the absorption models of acid gases in trapping reagents are derived from the analytical results. To prevent …

The purpose of this study is to determine whether oil and gas producing companies smooth their ending reserve quantities. Smoothing is defined as a reduction in variance in the trend of ending reserve quantities over time compared to the trend of ending reserve quantities less the hypothesized smoothing variable over time. This study focuses on two variables that are most susceptible to manipulation—revisions of previous estimates and additions. This study also examines whether revisions are positively or negatively biased and the variability of the revisions. The sample consists of 70 companies chosen from oil & Gas Reserve Disclosures: 1980-1984 Survey of 400 Public Companies by Arthur Andersen and Company. For each company, ending reserve quantities for the years 1978-1984 were regressed over time, and the standard deviation of the estimate (SDE) was calculated. Then the ending reserve quantities less the hypothesized smoothing variable were regressed over time, and the SDE was calculated. A linear model and a semi-logarithmic model were used. A smoothing ratio (SR) was determined by dividing the SDE of reserves less the hypothesized smoothing variable by the SDE of ending reserve quantities. An SR greater than one indicates smoothing, and an SR less than one indicates that …

This ethnographic, descriptive case study is concerned with an analysis of the Elderhostel experience at one specific university. Questionnaires, evaluation documents, observations, phototographs, and interviews were used in this study to describe the 1988 Elderhostel experience at North Texas State University. Thirty-three persons were initially asked to participate in this study. Twenty-nine agreed and actually completed the questionnaires, and 26 completed the program evaluation. The study is organized and presented in the following manner: Chapter I introduces the study. Chapter II presents a review of related literature addressing those studies directly concerned with the Elderhostel experience, those addressing motivational reasons for participation in adult education, and those dealing with learning abilities, interests, and goals of the elderly in general. Chapter III includes the methods and procedures used to collect and analyze the data. Chapter IV presents the descriptive and statistical analysis of the data, and Chapter V includes the summary, interpretations, conclusions, and recommendations that were derived from the analysis. Major findings of this study include a description of the organization and administration of the program, a description of the educational and co-curricular activities offered and how they were evaluated by the participants, and demographic and motivational data of the …

The purpose of this study was to investigate the perceptions of the physics instructors, major-physics students, and nonmajor-physics students regarding actual teaching performance and effective teaching performance. The sample consisted of a total of 56 physics instructors, 120 major-physics students, and 120 nonmajor-physics students at eight public universities in Thailand. A total of 53 physics instructors or 94.64 percent, 101 major-physics students or 84.17 percent, and 107 nonmajor-physics students or 89.17 percent responded in this study. Multivariate analysis of variance, univariate analysis, one-way analysis of variance, and multiple regression were used in the follow-up assessment, with the .05 level of significance. The physics instructors, major-physics students, and nonmajor-physics students perceived actual teaching performance in class to be significantly different from effective teaching performance. The three groups rated actual teaching performance on every factor to be less than sffective teaching. There was a significant difference between the physics instructors' perceptions and the major-physics students' perceptions regarding actual teaching performance, and also there was a significant difference between the physics instructors' perceptions and the nonmajor-physics students' perceptions regarding actual teaching performance. However, there was no significant difference between major-and nonmajor-physics students' perceptions regarding actual teaching performance. There was no significant difference among …

The purposes of this study were. to identify current uses of computers by university foodservice operations and to determine if there.are any differences in computer use among university foodservice operations. The twelve university foodservice directors who responded to the research questionnaire varied significantly in their computer usage and computer characteristics. Institutions serving more than 1,000 meals per day represented 91% of the sample using computers. Chi Square analysis found a significant use of menu-costing programs. The computers were used more than six hours a day by 75% of the sample. The.problems relating to hardware and software selection indicate a lack of assessment of operational needs for foodservice operations. Guidelines to assist foodservice directors in computerization are needed.

This work for harp and string orchestra uses musical materials derived from a chord taken from the lydian mode. The three major formal divisions are A, B, and A'. The A and A' sections are more homophonic in texture and slower in harmonic rhythm. The B section is mostly contrapuntal. Sections A and A' are dreamy and dance-like while the B section is turbulent and unrestful. These characteristics are represented by sustained sonorities, twoagainst- three rhythmic configurations, and lilting melodic materials in sections A and A', as opposed to the fragmented, ever-changing melodic material of the B section. The interweaving of the musical materials into a consummate form represents the conversations, personalities, and exploits of these Atmosphantoms, giving the music its philosophical and conversational character.

Boethius, a late Roman philosopher, composed his last work, De Consolatione Philosophiae, while in prison. His final effort crowned a lifetime of philosophical achievement, and the work was influential throughout the Middle Ages. Frequently translated, the Consolation was one of the books which was chosen by Alfred, a ninth century Anglo-Saxon king, for use in the rebuilding of his kingdom after the Danish invasions. Although intended for an audience which was heavily influenced by a lively pagan tradition, the book was re-interpreted during the Carolingian period to conform to a strict Christian standard. Alfred's own interpretation is indicative of this amalgamation of ancient learning in the milieu of an emerging European culture, as well as his own pragmatic personality.

The Ballad of Sam Bass is an original. play based on the life of Sam Bass the outlaw. Cowboys camped on the Chisholm trail are entertained by a stranger who sings a song about Sam Bass. Bass was a good-hearted individual who was seduced by his vices, drinking and gambling, and fell into the life of an outlaw. He was successful in eluding the law until he was betrayed by one of his own men, Jim Murphy. In the course of his song, the stranger reveals himself to be Frank Jackson, the only surviving member of Bass's gang. Jackson had talked Bass out of killing Murphy when Bass became suspicious. Creating the song serves as a catharsis for Jackson's guilt.

Two hundred and fifty-three subjects were used in an experiment to try to determine how differences in news media presentations affect the reader's view of terrorism. Two stories about a terrorist attack were used, one describing a bombing, the other a hijacking. Both stories had two versions using no one injured or eight innocent people injured. One group of subjects was given no additional information about terrorism. The second group was given information after the description that emphasized the salience of terrorism. The third group received information that de-emphasized the seriousness of terrorism. Subjects were also given a questionnaire designed to measure authoritarianism and one to measure conservatism. It was found that subjects scoring high on authoritarianism or conservativism favored more severe punishment for terrorists than did those scoring lower on the two scales. Findings did not support the hypothesis that providing people with information about terrorism could lessen the impact of terrorist events.

There are two principal definitions of response-reinforcer contingency in the current literature which Scott and Piatt (1985) have labeled the phi coefficient and Rescorla index. For both definitions, contingencies are sensitive to two conditional probabilities of reinforcement, that given the occurrence and that given the non-occurrence of the criterion response. However, phi coefficient is sensitive also to the probability of the criterion response. In order to examine the relationship between children's perceived contingencies of teacher reinforcements, as defined by the phi coefficient and Rescorla index, and the children's perceptions of competence and measures of their academic performances, 119 5th grade children (54 boys and 65 girls) were studied. Two variables derived specifically from the phi coefficient, the probability of children's responses and the probability of teacher reinforcements, were also examined in their relationship to perceived contingencies and academic performance. In general, children's perceptions of teachers as both contingently rewarding and punishing, as defined by the phi coefficient and Rescorla index, were predictive of good academic performance by the children and teachers rating them as academically competent. Childrens' perceptions of their academic competence were also predictive of their academic performances and teacher ratings. The children's perceptions of academic competence were related …

The ability of several psychometric instruments to differentiate between criminal and non-criminal subjects was investigated. The subjects in the study consisted of fifty male individuals between the ages of 18 and 55, half of which had been convicted of one crime and half of which had no history of criminal activity. The tests administered consisted of the Psychopathic Deviation Scale from the Minnesota Multiphasic Personality Inventory (MMPI), the Psychopathic Deviation Scale of the Clinical Analysis Questionnaire, and two tests designed by the author. The author's tests consisted of the Test of Criminal Cognitions which evaluated antisocial thought patterns and cognitive flexibility, and the Social Semantics Test which assessed individual role definitions. The Test of Criminal Cognitions was administered as a part of a structured interview, and all other scales were administered in a paper and pencil format. The results indicated that the Psychopathic Deviation Scale of the MMPI, and a portion of both the Test of Criminal Cognitions and the Social Semantics Scales differentiated between the groups at the .05 level or better. These findings indicated that criminals tend to be significantly less flexible in their thought and tend to view others in a much more narcissistic manner than non-criminals. …

Test items supplied with seven textbooks approved for use in Computer Science I and II curricula in Texas public schools were categorized by Bloom's taxonomy of educational objectives. Eating was done by a panel of ten judges selected from a group of participants at a taxonomy workshop. The selection criterion was demonstration of at least 80 percent competency in item classification. Judges received a small stipend for completing the rating task. Of 2020 possible items, 998 were randomly selected for analysis. Equal percentages of items from each text were then randomly assigned to each rater. All statistical analyses were computed using SPSS/PC+ (version 2.1). In both courses, CLD frequencies decreased through the three lower levels. The percentage of questions falling in these levels was approximately 83 percent for both courses. However, the higher-level course contained almost 10 percent more Knowledge level questions than did the lower course. At the higher taxonomic levels, the decline was roughly five percent per level in CS I but erratic in CS II. Analysis by book also revealed wide differences within each course.

This study compared three methods of selecting the best discriminating test items and the resultant test reliability of mastery/nonmastery classifications. These three methods were (a) the agreement approach, (b) the phi coefficient approach, and (c) the random selection approach. Test responses from 1,836 students on a 50-item physical science test were used, from which 90 distinct data sets were generated for analysis. These 90 data sets contained 10 replications of the combination of three different sample sizes (75, 150, and 300) and three different numbers of test items (15, 25, and 35). The results of this study indicated that the agreement approach was an appropriate method to be used for selecting criterion-referenced test items at the classroom level, while the phi coefficient approach was an appropriate method to be used at the district and/or state levels. The random selection method did not have similar characteristics in selecting test items and produced the lowest reliabilities, when compared with the agreement and the phi coefficient approaches.

This study models the human process of music cognition on the digital computer. The definition of music cognition is derived from the work in music cognition done by the researchers Carol Krumhansl and Edward Kessler, and by Mari Jones, as well as from the music theories of Heinrich Schenker. The computer implementation functions in three stages. First, it translates a musical "performance" in the form of MIDI (Musical Instrument Digital Interface) messages into LISP structures. Second, the various parameters of the performance are examined separately a la Jones's joint accent structure, quantified according to psychological findings, and adjusted to a common scale. The findings of Krumhansl and Kessler are used to evaluate the consonance of each note with respect to the key of the piece and with respect to the immediately sounding harmony. This process yields a multidimensional set of points, each of which is a cognitive evaluation of a single musical event within the context of the piece of music within which it occurred. This set of points forms a metric space in multi-dimensional Euclidean space. The third phase of the analysis maps the set of points into a topology-preserving data structure for a Schenkerian-like middleground structural analysis. This …

This thesis analyzes the effect of corporate tax rates on the purchasing-power-parity (PPP) doctrine. The data used to test this hypothesis are drawn from the U. S., the U. K., the Federal Republic of Germany, Canada, and Japan. The first chapter introduces the reader to the concepts of the PPP doctrine and states the hypothesis. Chapter 2 reviews the literature on the PPP doctrine. Chapter 3 specifies a model of the PPP doctrine including tax rates. Chapter 4 reports and interprets the findings. The study is summarized and conclusions are drawn in chapter 5. In this study it is shown that tax rates are significant only in the case of the U. S. dollar/Canadian dollar exchange rate.

The purpose of this study was to investigate the extent to which a non-verbal test of intelligence, the Test of Non-Verbal Intelligence (TONI), may be used for assessing intellectual abilities of children in India. This investigation is considered important since current instruments used in India were developed several years ago and do not adequately reflect present standards of performance. Further, current instruments do not demonstrate adequate validity, as procedures for development and cultural transport were frequently not in adherence to recommended guidelines for such practice. Data were collected from 91 normally achieving and 18 mentally retarded Indian children, currently enrolled in elementary schools. Data from an American comparison group were procured from the authors of the TONI. Subjects were matched on age, grade, and area of residence. Subjects were also from comparative socioeconomic backgrounds. Literature review of the theoretical framework supporting cross-cultural measurement of intellectual ability, a summary of major instruments developed for cross-cultural use, non-verbal measures of intellectual ability in India, and issues in cross-cultural research are discussed, with recommended methodology for test transport. Major findings are: (a) the factor scales derived from the Indian and American normally achieving groups indicate significant differences; (b) items 1, 3, 5, 8, …

This study discusses the evolution of the English country-house poem from its inception by Ben Jonson in "To Penshurst" to the present. It shows that in addition to stylistic and thematic borrowings primarily from Horace and Martial, traditional English values associated with the great hall and comitatus ideal helped define features of the English country-house poem, to which Jonson added the metonymical use of architecture. In the Jonsonian country-house poem, the country estate, exemplified by Penshurst, is a microcosm of the ideal English social organization characterized by interdependence, simplicity, service, hospitality, and balance between the active and contemplative life. Those poems which depart from the Jonsonian ideal are characterized by disequilibrium between the active and contemplative life, resulting in the predominance of artifice, subordination of nature, and isolation of art from the community, as exemplified by Thomas Carew's "To Saxham" and Richard Lovelace's "Amyntor's Grove." Architectural features of the English country house are examined to explain the absence of the Jonsonian country-house poem in the eighteenth century. The building tradition praised by Jonson gradually gave way to aesthetic considerations fostered by the professional architect and Palladian architecture, architectural patronage by the middle class, and change in identity of the country …

In this study a two-part mixed probability density function was derived which described the relative changes in the Standard and Poor's 100 Stock Index over various intervals of time. The density function is a mixture of two different halves of normal distributions. Optimal values for the standard deviations for the two halves and the mean are given. Also, a general form of the function is given which uses linear regression models to estimate the standard deviations and the means. The density functions allow stock market participants trading index options and futures contracts on the S & P 100 Stock Index to determine probabilities of success or failure of trades involving price movements of certain magnitudes in given lengths of time.

The research reported here is a study of detector systems to determine those most suited for simultaneous organic acid, inorganic anion determination. Comparisons are made on the basis of detection limits and sensitivities for conductivity, UV/Vis, photoconductivity, and derivative conductivity detection systems. The investigation was made using a constant chromatographic system with the only variable component being the detector system. Eluant optimization conditions for each detector are reported along with tables reporting detection limits and sensitivities for each detector system. Various chromatograms are also shown to provide a visual comparison between detector results.

This study explored the effects of counselor dress style and counselor and subject gender on clients' expectations about counseling. Two hundred fifty undergraduate students were given Tinsley's Expectations About Counseling questionnaire. Dress style was shown to have no effect on the expectations measured. Significant main effects were found for client gender, counselor gender and their two way interaction on the measures of responsibility, acceptance, confrontation, empathy, genuineness, tolerance, trustworthiness, concreteness, and immediacy. Post hoc analysis revealed that both male and female participants had higher expectations of female counselors than male counselors. Participants of both genders also expected female counselors to be more confrontive, genuine, trustworthy, concrete, and accepting than male counselors. They also had a higher expectation that counseling would address their immediate concerns.

Dr. W. A. Criswell is the well known pastor of the twenty-seven thousand member historic First Baptist Church in downtown Dallas, Texas. He has held the position for the past forty-three years. Until now no one has attempted an in-depth study of Criswell's educational contributions to the First Baptist Church (which have also been adopted into the Southern Baptist denomination, America's largest Protestant religious organization). Although Criswell has been the Senior Pastor of the First Baptist Church of Dallas for many years, this was by no means his introduction to the pastorate. In 1928 he was ordained as a seventeen year old minister of the gospel in Amarillo, Texas. He has been a pastor for over sixty years. Criswell has made a lasting impact on the church staff, school staff (Criswell College and First Baptist Academy), students in those schools, the Southern Baptist denomination and also the city of Dallas. He has been one of the key figures in evangelical national movements. Presidents, Vice-Presidents, Senators, and Governors are no strangers to a Sunday morning service held in the large sanctuary in downtown Dallas. Much of the research for this project originated from the Oral Memoirs of W. A. Criswell. a …