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Futures-Forward Price Differences and Efficiency in the Treasury Bill Futures Market
This study addressed two issues. First, it examined the ability of two models, developed by Cox, Ingersoll and Ross (CIR), to explain the differences between futures and implicit forward prices in the thirteen-week T-bill market. The models imply that if future interest rates are stochastic, futures and forward prices differ; the structural difference is due to the daily settlement process required in futures trading. Second, the study determined the efficiency of the thirteen-week T-bill futures market using volatility and regression tests. Volatility tests use variance bounds to examine whether futures prices are excessively volatile for the market to be efficient. Regression tests investigate whether futures prices are unbiased predictors of future spot prices. The study was limited to analysis of the first three futures contracts, using weekly price data as reported in the Wall Street Journal from March, 1976 to December, 1984. Testing of the first CIR model involved determination of whether changes in futures-forward price differences are related to changes in local covariances between T-bill futures and bond prices. The same procedure applied in testing the second model with respect to changes in futures-forward price differences, local covariances between T-bill spot and bond prices, and local variances of bond …
Date:
May 1986
Creator:
Wong, Alan, 1954-
System:
The UNT Digital Library
Conway's Link Polynomial: a Generalization of the Classic Alexander's Knot Polynomial
The problem under consideration is that of determining a simple and effective invariant of knots. To this end, the Conway polynomial is defined as a generalization of Alexander's original knot polynomial. It is noted, however, that the Conway polynomial is not a complete invariant. If two knots are equivalent, as defined in this investigation, then they receive identical polynomials. Yet, if two knots have identical polynomials, no information about their equivalence may be obtained. To define the Conway polynomial, the Axioms for Computation are given and many examples of their use are included. A major result of this investigation is the proof of topological invariance of these polynomials and the proof that the axioms are sufficient for the calculation of the knot polynomial for any given knot or link.
Date:
December 1986
Creator:
Woodard, Mary Kay
System:
The UNT Digital Library
The Missae De Beata Virgine C. 1500-1520: A Study of Transformation From Monophonic to Polyphonic Modality
While musical sources and documents from throughout the Middle Ages reveal that mode was an enduring and consciously derived trait of monophonic chant, modality in later polyphony shares neither the historical span nor the theoretical clarity of its monophonic counterpart. Modern theorists are left with little more than circumstantial evidence of the early development of modality in polyphony. This study attempts to shed light on the problem by detailed analysis of a select body of paraphrase masses from the early sixteenth century. First, it correlates the correspondence between the paraphrased voice and the original chant, establishing points of observation that become the basis of melodic analysis. Then, these points are correlated with known rules of counterpoint. Exceptions are identified and examined for their potential to place emphasis on individual mode-defining pitches. A set of tools is derived for quantifying the relative strength of cadential actions. Levels of cadence are defined, ranging from full, structural cadences to surfacelevel accentuations of individual pitches by sixth-to-octave dyadic motions. These cadence levels are traced through the Missae de beata virqine repertoire from c. 1500-1520, a repertoire that includes masses of Josquin, Brumel, La Rue, Isaac, and Rener. While the Credos, based on two chant …
Date:
August 1986
Creator:
Woodruff, Lawrence Theodore
System:
The UNT Digital Library
Imagery Technology: Effects on a Chronic Pain Population
The effects of a computer program (Health Imagery Technology Systems, HITS) designed to promote attitude and cognitive changes through elicitation of evoked response potentials were evaluated with chronic pain patients. A treatment and control group were used for comparison (52 patients, 22 females, 32 males, mean ages 47). Wechsler Adult Intelligence Scale-Revised subtests, a Semantic Differential scale, the Health Attribution Test, an imagery protocol, the McCoy-Lawlis Pain Drawing, and the Zung Depression scale were used at admission and discharge to measure change. A pre- post-mood thermometer was used with the treatment group. The hypotheses that the treatment group would show significant changes on these measures were tested with a two group repeated measures analysis of variance design. No significant changes were noted for either group on the intellectual measures, on health attitudes, or reports of pain. The similarities subscale showed significant within group variance (F = 5.46, p < .023). One bipolar adjective pair indicated significant differences (F = 4.79, p < .035), possibly a result of chance. One of seven imagery measures suggested a significant improvement in strength of imagery for the treatment group (F = 18.2, p < .00008). Both groups showed significantly improved imagery of body defenses …
Date:
August 1986
Creator:
Wright, Sharon G.
System:
The UNT Digital Library
Nonverbal Power Cues
Studies investigating aspects of social influence or power in counseling settings have examined the relationship between nonverbal cues and social influence or power. This study investigated perceptions of power, responsiveness, attractiveness, expertness, and trustworthiness by manipulating posture, facial expression and sex of therapist. After viewing photographs of stimulus therapists and listening to audio tapes, 96 male and 98 female undergraduates completed the Counselor Rating Form and a questionnaire measuring therapists' power and responsiveness. Results indicated that facial expression was more salient than posture. Smiling decreased ratings of power and increased ratings of attractiveness, responsiveness, and trustworthiness. Open posture was seen as more attractive and more powerful than closed posture. Surprisingly, females were viewed as more powerful than males. Other gender differences were found only in interaction with other variables.
Date:
May 1986
Creator:
Young, Merrie Lauren
System:
The UNT Digital Library
On Parent-Child Relations: Toward the Construction of a Theory of Filial Exchange
This investigation represents an initial attempt toward the construction of a general life cycle theory of parent-child relations. Emphasis was placed on the parent-adult child relationship with the onset of a filial crisis, e.g., due to illness. After the theory was described, two of the five propositions comprising this orientation (i.e., propositions four and five) were analyzed through a series of twenty-five hypotheses. The objectives of these hypotheses were (a) to analyze the relationship between the length of time involved in various patterns of filial responsibility and the likelihood that these patterns will become institutionalized as obligatory roles and (b) to determine how factors associated with these emergnt role obligations contribute to the cost of caregiving. A probability sample of 180 caregivers was obtained from within the Dallas/Ft. Worth area. Multiple and partial correlation analyses and the use of Student's t revealed that the length of time involved as a caregiver was significantly related to the number of informal caregiving roles performed by adult children. In addition, results indicated that the length of involvement in each caregiving role examined (i.e., household care, transportation service, personal care, medical attention, meal preparation, financial management and mobility assistance) was significantly related to (a) …
Date:
December 1986
Creator:
Ziner, Andrew Scott
System:
The UNT Digital Library
Texas Public School District Legal Costs and Preventive Law Practices
The purpose of this study was to compare the legal costs of Texas public school districts during the school years 1980-81, 1981-82, and 1982-83 with the preventive law practices utilized by those districts. A survey was made of Texas superintendents' knowledge of school law. The data were contrasted with legal costs and the preventive law practices of the district. Two survey instruments were developed, and the case study approach was utilized. A survey was sent to the 1,101 Texas public school superintendents. The twenty-five item instrument was designed to solicit information regarding the amount of money spent by districts and the types of preventive law practices that school districts use to reduce legal costs. A legal awareness questionnaire was developed and administered to 72 of the 542 superintendents who responded to the first survey instrument. Three school districts were selected to be case study sites. The data from the instruments were analyzed to determine if a relationship existed between a district's legal costs and its preventive law practices, a district's legal costs and the superintendent's knowledge of school law, and a superintendent's knowledge of school law and the district's preventive law practices. The major conclusions of the study were as …
Date:
December 1986
Creator:
Zollars, Mary Catherine
System:
The UNT Digital Library