UNT Libraries - Browse


The Effects of Missing Data on Audit Inference and an Investigation into the Validity of Accounts Receivable Confirmations as Audit Evidence

Description: The objectives of the thesis research were twofold. One objective was to conduct an exploratory investigation of the underlying response mechanism to an auditor's request for confirmation of accounts receivable. The second objective was to investigate the validity of confirmation evidence. Validity was defined in terms of detection of errors.
Date: August 1987
Creator: Caster, Paul, 1951-

The Effects of Spouse Presence During Graded Exercise Testing on Psychological and Physiological Parameters in Cardiac Patients and Healthy Adults

Description: The direct effect of spouse presence during graded exercise testing on anxiety and performance has not been previously delineated. Therefore, the purposes of this study were to (a) ascertain if spouse presence during graded exercise testing affects state anxiety or physiological performance variables, and (b) determine differences in psychological status between cardiac patients and healthy adults.
Date: August 1987
Creator: Baylor, Krissa A.

Syntheses of Highly Strained Energetic Molecules and Development of New Synthetic Methodology

Description: The objective of this study was to synthesize new energetic, strained, saturated polycyclic compounds. For this purpose, new methodology has been developed, as follows: (i) Ketenes have been generated in situ via treatment of aldo-, keto- or alkenoic acid with either toluenesulfonyl chloride or 2-chloro-1-methylpyridfniurn iodide (Mulkaiyama's reagent). The reactive intermediates thereby generated have been found to undergo intramolecular [2+2] cycloaddition reactions in these systems.
Date: May 1987
Creator: Wu, An-hsiang

Studies of Enzyme Mechanism Using Isotopic Probes

Description: The isotope partitioning studies of the Ascaris suum NAD-malic enzyme reaction were examined with five transitory complexes including E:NAD, E:NAD:Mg, E:malate, E:Mg:malate, and E:NAD:malate. Three productive complexes, E:NAD, E:NAD:Mg, and E:Mg:malate, were obtained, suggesting a steady-state random mechanism. Data for trapping with E:14C-NAD indicate a rapid equilibrium addition of Mg2+ prior to the addition of malate. Trapping with 14C-malate could only be obtained from the E:Mg2+:14C-malate complex, while no trapping from E:14C-malate was obtained under feasible experimental conditions. Most likely, E:malate is non-productive, as has been suggested from the kinetic analysis. The experiment with E:NAD:malate could not be carried out due to the turnover of trace amounts of malate dehydrogenase in the pulse solution. The equations for the isotope partitioning studies varying two substrates in the chase solution in an ordered terreactant reaction were derived, allowing a determination of the relative rates of substrate dissociation to the catalytic reaction for each of the productive transitory complexes. NAD and malate are released from the central complex at an identical rate, equal to the catalytic rate.
Date: August 1987
Creator: Chen, Cheau-Yun

Physical, Chemical and Catalytic Properties of the Isozymes of Bovine Glucose Phosphate Isomerase

Description: Glucose phosphate isomerase (GPI) occurs in different bovine tissues as multiple, catalytically active isozymes which can be resolved by polyacrylamide gel electrophoresis and isoelectric focusing. GPI from bovine heart was purified to homogeneity and each of the isozymes was resolved. Four of the five isozymes were characterized with regard to their physical, chemical and catalytic properties in order to establish their possible physiological significance and to ascertain their molecular basis. The isozymes exhibited identical native (118 Kd) and subunit (59 Kd) molecular weights but had different apparent pi values of 7.2, 7.0, 6.8 and 6.6. Structural analyses showed that the amino terminus was blocked and the carboxyl terminal sequence was -Glu-Ala-Ser-Gly for all four isozymes. The most basic isozyme was more stable than the more acidic isozymes (lower pi values) at pH extremes, at high ionic strength, in the presence of denaturants or upon exposure to proteases. Kinetic constants, such as turnover number, Km and Ki values, were identical for all isozymes. Identical amino acid composition and peptide mapping by chemical cleavage at methionine and cysteine residues of the isozymes suggest a postsynthetic modification rather then a genetic origin for the in vivo isozymes. When the most basic isozyme was incubated in vitro under mild alkaline conditions, there was a spontaneous generation of the more acidic isozymes with electrophoretic properties identical to those found in vivo. The simultaneous release in ammonia along with the spontaneous shift to more acidic isozymes and changes in the specific cleavage of the Asn-Gly bonds by hydroxylamine of the acidic isozyme indicates deamidation as the probable molecular basis. In summary the isozymes appear to be the result of spontaneous, postsynthetic modifications involving the addition of an equal number of negative charges and are consistent with the deamidation process.
Date: August 1987
Creator: Cini, John Kenneth

An Empirical Investigation of the Factors Considered by the Tax Court in Determining Principal Purpose Under Internal Revenue Code Section 269

Description: The purpose of this study was an empirical investigation of the factors considered by the United States Tax Court in determining whether the principal purpose for an acquisition was tax avoidance (or alternatively, given the totality of the surrounding circumstances, whether there was an overriding business purpose for the acquisition).
Date: May 1987
Creator: Olson, William H. (William Halver)

A Comparison of Native and Non-Native English-Speaking Teaching Assistants

Description: The purposes of this study were to determine whether differences existed between the communication styles and teaching effectiveness, respectively, of native and non-native teaching fellows, as perceived by their undergraduate students. In addition, the study sought to determine whether a positive correlation existed between the final grades and the communication styles and teaching effectiveness, respectively, of native and non-native teaching fellows as perceived by their undergraduate students. In order to carry out the purposes of this study, six hypotheses were tested concerning the perception of native and non-native undergraduate students toward the communication style and teaching effectiveness of teaching fellows in North Texas State University.
Date: May 1987
Creator: Shirvani Shahenayati, Zahra

The Elements of Lesson Design, Elementary Public School Students' Mastery of Mathematics Objectives, Accrued Teaching Experience, and Teacher Inservice Training

Description: The purpose of this study was to investigate the relationship among the teachers' use of the individual elements of lesson design, students' mastery of mathematics objectives, the hours of inservice training completed by the teachers and the teachers' years of experience. The individual elements of lesson design are defined by Madeline Hunter and are anticipatory set, objective and purpose, input, modeling, checking for understanding, guided practice, and independent practice.
Date: May 1987
Creator: Smith, James A. (James Arthur) 1945-

Volume and Performance of Convertible Preferred Stocks Used in Mergers: 1968-1984

Description: This study provides information about convertible preferreds generally and, in particular, those used in financing mergers during the period 1968-1984. Specifically, the following topics are examined: (1) traditional corporate motives for the use of convertible preferreds as a financing means in mergers and acquisitions, (2) annual data about convertible preferreds' issuance by volume and purpose for the period 1968-1984, (3) average annual returns of merger-related convertible preferreds and average annual returns of common stock of the same companies for the period 1968-1980, (4) performance of convertible preferreds in relation to the market in general, and (5) the future of convertible preferreds as a financing instrument in merger activity.
Date: May 1987
Creator: Nijim, Monther M.

A Test of Allocational Market Efficiency in Takeovers Using Tobin's q Theory of Investment

Description: The primary purpose of the study was to investigate whether takeover markets are allocationally efficient using Tobin's q as the variable which summarizes the investment opportunities of firms. Chapter I presented the purposes, hypotheses, methodology, and limitations of the study. The two hypotheses proposed were as follows: Acquiring firms' q should be significantly higher than that of control firms, on average, and target firms' q should be significantly lower than that of control firms, on average. Chapter II presented the review of literature on takeovers and theory of investments. Chapter III presented the research design adopted to test the above hypotheses. The methodology to calculate q-values and methods to reduce the bias which may result from choice-based sampling were also given. A paired comparison t-test was employed to test the hypotheses. Sample firms were selected from the COMPUSTAT RESEARCH and COMPUSTAT INDUSTRIAL tape.
Date: May 1987
Creator: Kim, Keeho

Life History Biology of the Desert Nesting Seagull Larus modestus

Description: Gray gulls Larus modestus are unique among birds of northern Chile as the only species nesting in the interior Atacama Desert, and the only seagull nesting far (30 - 100 km) from surface water. During breeding-nesting (August - February) gray gulls congregate on the coast of northern Chile where they feed and initiate courtship. As early as August, breeding pairs commute daily to the inner desert to establish nesting territories, round-trip distances of 60-200 Km. During incubation (30 days) and brooding (7 days) adults alternate daily foraging flights to the coast. Afterwards, both adults forage daily for their chick(s) until fledging (ca. 60 days). Foraging flights and thermoregulatory costs during the period of maximal solar radiation, when ground temperatures may reach 61 C in the day and drop to 2 C at night, have selected for adaptations which minimize those costs: tolerance of hypothermia and hyperthermia; dark plumage; low egg-shell water vapor conductance; low standard metabolic rate; elaborate repertory of thermoregulatory behavior which allow adults to take advantage of microclimatic variations in the desert and minimize costs relative to a sympatric congenor, Larus belcheri scheduling foraging flights to take advantage of optimal atmospheric conditions and presence of forage fish (anchovies) close to the surface; scheduling migration to coincide with anchovy production and levels of interspecific competition; and reduced clutch size ( ≤ 2) relative to most seagulls. Periodic El Nino-Southern Oscillations (ENSO), which reduce principal food items of gray gulls, have selected for 'bet hedging" tactic by which L. modestus either ceases reproduction or varies clutch size between one and two, as observed during and after the 1982-83 ENSO. During a typical reproductive season, breeding pairs allocate a minimum of 39 percent of their net metabolized energy (NME) to foraging flights. Including energy content of eggs, females have an overall ...
Date: December 1987
Creator: Guerra Correa, Carlos Guillermo

Invertible Ideals and the Strong Two-Generator Property in Some Polynomial Subrings

Description: Let K be any field and Q be the rationals. Define K^1[X] = {f(X) e K[X]| the coefficient of X in f(X) is zero} and Q^1β[X] = {f(X) e Q[X]| the coefficent of β1(X) in the binomial expansion of f(X) is zero}, where {β1(X)}^∞ i=0 are the well-known binomial polynomials. In this work, I establish the following results: K^1[X] and Q^1β[X] are one-dimensional, Noetherian, non-Prüfer domains with the two-generator property on ideals. Using the unique factorization structure of the overrings K[X] and Q[X], the nonprincipal ideal structures of both rings are characterized, and from this characterization, necessary and sufficient conditions are found for a nonprincipal ideal to be invertible. The nonprincipal invertible ideals are then characterized in terms of the coefficients of the generators, and an explicit formula for the inverse of any proper invertible ideal is found. Finally, the class groups of both rings are shown to be torsion free abelian groups. Let n be any nonnegative integer. Results similar to the above are found in the generalizations of these two rings, K^n[X] and q^nβ[X], where the coefficients on the first n nonconstant basis elements are zero. For the domains K^1[X] and Q^1β[X], the property of strong two-generation is explored in detail and the following results are established: 1. K^1[X] and Q^1β[X] are not strongly two-generated, 2. In either ring, any polynomial with a constant term, or of degree two or three is a strong two-generator. 3. In K^1[X] any polynomial divisible by X^4 is not a strong two-generator, 4. An ideal I in K^1[X] or Q^1β[X] is strongly two-generated if and only if it is invertible.
Date: May 1987
Creator: Chapman, Scott T. (Scott Thomas)

A Comparison of Some Continuity Corrections for the Chi-Squared Test in 3 x 3, 3 x 4, and 3 x 5 Tables

Description: This study was designed to determine whether chis-quared based tests for independence give reliable estimates (as compared to the exact values provided by Fisher's exact probabilities test) of the probability of a relationship between the variables in 3 X 3, 3 X 4 , and 3 X 5 contingency tables when the sample size is 10, 20, or 30. In addition to the classical (uncorrected) chi-squared test, four methods for continuity correction were compared to Fisher's exact probabilities test. The four methods were Yates' correction, two corrections attributed to Cochran, and Mantel's correction. The study was modeled after a similar comparison conducted on 2 X 2 contingency tables and published by Michael Haber.
Date: May 1987
Creator: Mullen, Jerry D. (Jerry Davis)

The Influence of Jazz on French Solo Trombone Repertory

Description: This lecture-recital investigated the lineage of French composers who were influenced by jazz during the first half of the twentieth century, with a focus on compositions from the solo trombone repertory. Historically, French composers, more than those of other European countries, showed an early affinity for the artistic merits of America's jazz. This predilection for the elements of jazz could be seen in the selected orchestral works of Les Six and the solo compositions of the Paris Conservatory composers. An examination of the skills of major jazz trombonists early in the twentieth century showed that idioms resulting from their unique abilities were gradually assimilated into orchestral and solo repertory. Orchestral works by Satie, Milhaud, and Ravel works showing jazz traits were investigated. Further, an expose of the solo trombone works emanating from the Paris Conservatory was presented. Although written documentation is limited, comparisons between early recorded jazz trombone solos and compositions for orchestral and solo trombone was established. These comparisons were made on the basis of idiomatic jazz elements such as high-tessitura ballad melodies, blue tonalities and harmonies, syncopated rhythms, and many of the aspects of style associated with improvisation. All major French solo trombone repertory to mid-century was surveyed and examined.
Date: May 1987
Creator: Samball, Michael L. (Michael Loran)

The Association Between Testing Strategies and Performance in College Algebra, Attitude Towards Mathematics, and Attrition Rate

Description: The purposes of the study were: (1) to determine the effects of four testing strategies upon performance in college algebra, attitude towards mathematics, and attrition rate; (2) to determine the effects of two types of frequent testing upon performance, attitude, and attrition rate, (3) to determine the effects of different frequencies of in-class testing upon performance, attitude, and attrition rate; and (4) to draw conclusions which might help in selecting testing methods for college algebra classes.
Date: May 1987
Creator: Johnson, Charles W. (Charles Windle)

The Relationships Among English Oral Communication Apprehension, Social Interest, and Locus of Control of Far Eastern Students

Description: This study determined the relationships among English oral communication apprehension, social interest, and locus of control of Far Eastern students, and examined whether differences exist in these variables, compared to gender, age, academic classification, major field of study, employment status, and length of study in the United States. Four instruments, including a demographic questionnaire, the Adapted Personal Report of Communication Apprehension-24 (AFRCA-24), the Social Interest Scale (SIS), and the Rotter's Internal-External (I-E) Scale, were used to collect data from the sample of 240 Far Eastern students enrolled at North Texas State University in the fall semester of 1986.
Date: May 1987
Creator: Thira Praphruitkit

Studies on Hog Plasma Lecithin:cholesterol Acyltransferase: Isolation and Characterization of the Enzyme

Description: Lecithin:cholesterol acyltransferase (LCAT) was isolated from hog plasma and basic physicochemical properties and functionally important regions were investigated. Approximately one milligram of the enzyme was purified to apparent homogeneity with approximately a 20,000-fold increase in specific activity. In the plasma, hog LCAT was found to associate with high-density lipoproteins (HDL) probably through hydrophobic interactions with apolipoprotein A-I. HDL was the preferred lipoprotein substrate of the enzyme as its macromolecular substrate. The enzyme was found to contain 4 free sulfhydryl groups; at least one of these appeared to be essential for catalytic activity. The enzyme had a tendency to aggregate at high concentrations. More than half of the tryptophan and none of the tyrosine residues of the enzyme were shown to be exposed to the aqueous environment based on fluorescence and absorbance studies, respectively.
Date: May 1987
Creator: Park, Yong Bok

Prediction of Bankruptcy Using Financial Ratios, Information Measures, National Economic Data and Texas Economic Data

Description: The main purpose of this study is to develop a bankruptcy prediction model for the small business firm. Data was collected from the Dallas Small Business Administration (SBA), making this study specific to its decision makers. Existing research has produced models which predominately use financial ratios and information measures either independently or combined, and a few research models have used economic trends. This study varies from past studies in that it includes regional economic variables from the states of Texas. A sample of three-year data for 138 firms included fifteen bankrupt firms. This proportion of bankrupt/nonbankrupt firms approximates the proportion of repayed/defaulted loans in the SBA. Stepwise regression, set at the .15 level of significance, reduced a total of fifty-three variables to nine. These nine variables were then used to test twelve predictive models. All twelve models tested improved the SBA repayment rate and only two of the twelve would have caused the SBA to deny loans to applicants who eventually repaid. The study determined the model that included financial ratios, information measures, and Texas economic variables as best. It was also demonstrated that some of the variables used in this model could be eliminated without decreasing the predictive power of the model. The best of twelve models improved the SBA default rate by 40 percent without denying a loan to any applicant that eventually repaid.
Date: December 1987
Creator: Moore, Ronald K. (Ronald Kenneth)

Profile Development of Commenters Versus Non-Commenters on International Marketing Questionnaires

Description: The objectives of this dissertation were to: (1) discover whether commenters and non-commenters on an international marketing questionnaire differ based on sociodemographic, nationality, and personality characteristics; (2) determine whether commenters with greater life satisfaction are more likely to provide positive comments; (3) determine whether commenters differ in response styles due to their national background; and (4) discover whether commenters differ (based on sociodemo-graphic, nationality, and personality characteristics) in their propensity to comment on the design rather than on other questionnaire issues. An exploratory design was used to satisfy these objectives.
Date: May 1987
Creator: Knauber, Ines

John F. Walvoord at Dallas Theological Seminary

Description: This study gives a historical analysis of the life and career of John F. Walvoord. He has served Dallas Theological Seminary for over fifty years in various capacities. The process of gathering information included a review of literature, a review of the institutional records of the Seminary, and a systematic search of the Archives, providing a chronological history of personal correspondence from the Office of the President from 1924 through 1954. An interviewing process concluded the study and served as the means of evaluation and review.
Date: May 1987
Creator: Mink, Timothy G. (Timothy Gale)

Synthesis and Structure of Polynitro- and Polymenthylpolycyclic "Cage" Monomers and Polymers

Description: The objective of this study was to synthesize and characterize new energetic polycyclic "cage" compounds. As part of a program involved in the synthesis of new polynitropolycyclic compounds, 2,6-dinitro-5-methoxy- 7-carbomethoxypentacyclo[5. 3 .0 . 0* • * . CP • i ° . 0* •8]decane has been synthesized. This is a model system which can be used to study (1) the effect of nitro substitution on the photolability of carbon-carbon double bonds and (2) to develop methods for avoiding Haller-Bauer cleavage in cage /3-keto esters when synthesizing polynitro-substituted cage compounds.
Date: May 1987
Creator: Jin, Pei-Wen

Containment Relations Between Classes of Regular Ideals in a Ring with Few Zero Divisors

Description: This dissertation focuses on the significance of containment relations between the above mentioned classes of ideals. The main problem considered in Chapter II is determining conditions which lead a ring to be a P-ring, D-ring, or AM-ring when every regular ideal is a P-ideal, D-ideal, or AM-ideal, respectively. We also consider containment relations between classes of regular ideals which guarantee that the ring is a quasi-valuation ring. We continue this study into the third chapter; in particular, we look at the conditions in a quasi-valuation ring which lead to a = Jr, sr - f, and a = v. Furthermore we give necessary and sufficient conditions that a ring be a discrete rank one quasi-valuation ring. For example, if R is Noetherian, then ft = J if and only if R is a discrete rank one quasi-valuation ring.
Date: May 1987
Creator: Race, Denise T. (Denise Tatsch)

A comparison of the Effects of Different Sizes of Ceiling Rules on the Estimates of Reliability of a Mathematics Achievement Test

Description: This study compared the estimates of reliability made using one, two, three, four, five, and unlimited consecutive failures as ceiling rules in scoring a mathematics achievement test which is part of the Iowa Tests of Basic Skill (ITBS), Form 8. There were 700 students randomly selected from a population (N=2640) of students enrolled in the eight grades in a large urban school district in the southwestern United States. These 700 students were randomly divided into seven subgroups so that each subgroup had 100 students. The responses of all those students to three subtests of the mathematics achievement battery, which included mathematical concepts (44 items), problem solving (32 items), and computation (45 items), were analyzed to obtain the item difficulties and a total score for each student. The items in each subtest then were rearranged based on the item difficulties from the highest to the lowest value. In each subgroup, the method using one, two, three, four, five, and unlimited consecutive failures as the ceiling rules were applied to score the individual responses. The total score for each individual was the sum of the correct responses prior to the point described by the ceiling rule. The correct responses after the ceiling rule were not part of the total score. The estimate of reliability in each method was computed by alpha coefficient of the SPSS-X. The results of this study indicated that the estimate of reliability using two, three, four, and five consecutive failures as the ceiling rules were an improvement over the methods using one and unlimited consecutive failures.
Date: May 1987
Creator: Somboon Suriyawongse

Alcohol and Drug Abuse Programs in Selected Universities in the South and Southwest

Description: The problem addressed in this study is how selected universities in the South and Southwest recognize and attempt to deal with alcohol use and other drug use among students. The purpose of the study was to determine current practices and policies concerning student alcohol and drug use among the 20 selected universities. The data were obtained by means of a descriptive survey questionnaire which was mailed to 20 selected universities under the jurisdiction of the Southern Regional Accrediting Board. The instrument was designed to identify practices and programs concerning student alcohol and drug use. A copy of each institution's alcohol and drug policy was requested. The content and procedures of the programs implemented by the responding institutions were reviewed, in order to evaluate the extent and degree to which they provide for the recognition, education, intervention, and treatment for students with alcohol- or drug-use problems. Results are presented in tabular form. Of the 20 major state-supported universities which were mailed questionnaires, 75% returned usable instruments. All responding institutions felt they have an alcohol or drug problem of some magnitude, and all either have, or believe they have, some kind of policy to deal with substance use by students. All of the responding institutions also indicate that they have various programs in operation which deal with student substance use and abuse. Since this was a regional study the results are not necessarily generalizable. On the basis of the literature reviewed and the survey responses received, an authentic problem with student alcohol and drug use exists on campus. The institutions surveyed appear to recognize a problem; however, the results of this study reveal that most have yet to develop an effective or coordinated strategy to combat student alcohol and drug abuse.
Date: May 1987
Creator: Ponder, Fred T. (Fred Thomas)