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Biogeographic Relationships of Pocket Gophers (Geomys breviceps and Geomys bursarius) in the Southeastern Portion of Their Ranges

Description: This research utilized population genetic analyses (protein starch-gel electrophoresis and DNA sequencing of the cytochrome b mtDNA gene), host-parasite specificity (lice coevolution), remote sensing of satellite data, and geographic information systems (GIS) to characterize newly discovered populations of pocket gophers (genus: Geomys) in Arkansas. These populations are isolated and occur in seemingly unsuitable habitat in the Ozark Mountains of Arkansas. Analyses of electrophoretic and ectoparasite data suggested the populations in the Ozark Mountains represented isolates allied to Geomys bursarius, a species not known to occur in Arkansas. Comparison of mitochondrial DNA sequence data of the cytochrome b gene with that of other taxa and morphometric analyses confirmed that these populations are most closely allied to G. bursarius occurring to the north in Missouri. Moreover, these mtDNA sequence analyses indicated a degree of differentiation typical of that between other subspecies of pocket gophers. Therefore, these populations represent a distinct genetic entity in an intermediate stage of speciation and should be designated as a new subspecies, Geomys bursarius ozarkensis. Molecular clock analysis revealed a time of lineage divergence for this new subspecies as approximately 511,000 YBP. Due to the isolated nature and limited distribution of this subspecies, an evaluation of critical habitat needs was initiated. Remote sensing and GIS technologies were used to identify and describe suitable habitat Computerized classification of satellite imagery of suitable vegetation, integrated with ancillary digital information on soil associations, roads, and water systems, revealed that human activity had played a positive role in the establishment and dispersal of pocket gophers in this area. This research represents an initial combination of classical systematic tools with remote sensing and GIS to investigate biogeographic patterns and evolution. This project establishes a framework for using an interdisciplinary approach to studying organisms with limited distributions, determining evolutionary status, and providing recommendations for ...
Date: August 1998
Creator: Elrod, Douglas Allen

Biological and Toxicological Responses Resulting from Dechlorination of a Major Municipal Wastewater Treatment Plant Discharge to the Trinity River

Description: Federal regulations such as the Clean Water Act (P.L. 92-500), and its amendments, direct the Environment Protection Agency (EPA) to implement programs to control the releases of conventional pollutants and toxics into the waterways of the United States. The EPA began requiring treatment plants to conduct toxicity tests (biomonitoring) of their effluent discharges. To control toxicity caused by chlorination of wastewater discharges, the EPA also began requiring some treatment facilities to dechlorinate their wastewater before discharging. This research was funded by the EPA to document the changes that occurred in the Trinity River from the dechlorination of the effluent from Ft. Worth's Village Creek municipal wastewater treatment plant. The study occurred over a two year period beginning in August 1990. A wide variety of biological field assessments and toxicological assays were used to measure various responses. Seven river stations, covering approximately twenty river miles, and the treatment plant effluent were assessed. Two of the river stations were upstream from the treatment plant and used as reference sites. The remaining five river stations were downstream from the treatment plant, spread out over seventeen river miles. The study evaluated the impact of chlorination prior to dechlorination, which served as a baseline. Responses determined during dechlorination were compared to the baseline data. An overall improvement in species richness and diversity was seen at those river stations which had previously been adversely impacted by chlorine. Aquatic toxicity tests, such as those required to be used by dischargers, were conducted during this study. Periodic toxicity was observed with these tests in the effluent and river samples after dechlorination was initiated. Those tests, along with in situ toxicity assays, proved to be good predictors of biological community responses.
Date: August 1995
Creator: Guinn, Richard J. (Richard Joe)

Biology and Energetics of Tropisternus Lateralis Nimbatus (SAY) (Coleoptera: Hydrophilidae) in a Playa on the Southern High Plains of Texas and Aquatic Coleoptera Diversity from Seven Playas on the Southern High Plains of Texas

Description: A study of the biology of Tropisternus lateralis, a hydrophilid beetle, was conducted during the flood period of a single playa on the Southern High Plains of Texas from early June 1995 through early September 1995. Mechanism of colonization, tolerance/avoidance to drought, larval density, and secondary production were analyzed. T. lateralis colonized playas from surrounding aquatic habitats and avoided drought through aerial dispersion. Once in the playa, larval density increased over time. Secondary production was 1.31 g/m2/.25 yr. In addition, aquatic Coleoptera diversity was studied in seven playas on the Southern High Plains of Texas. A total of twenty three species were identified from the study region. Nine species not reported in playa literature were identified.
Date: December 1997
Creator: Cook, Robert E. (Robert Edward), 1969-

Biopsychosocial Factors Related to Health among Older Women

Description: Older adults are more vulnerable to the ill effects of life stress due to physiological changes associated with aging that result in decreased immunocompetence. Stressors interacting with an aging immune system may produce further declines in health. Variables shown to modulate the effect of stressors on neuroendocrine and immune function and health include social support, personality, coping style, and health locus of control. A comprehensive model is proposed that includes: life stressors, social resources, psychological resources, interaction between stressors and social resources, neuroendocrine and immune function, and symptomatology. This model was evaluated using structured equation modeling. Participants were 97 active, community dwelling, older women, ranging in age from 60 to 93 years.
Date: August 1995
Creator: Carter, Alice Powers

Biotic Factors and Temperature Tolerances via Critical Thermal Methodology in Goldfish

Description: CTMinimum and CTMaximum were measured in 620 goldfish to determine if biotic factors, in particular starvation, condition factor and size, affect temperature tolerance. Twenty-eight days of starvation adversely affected both upper and lower temperature tolerance. Condition factor was related to upper but not lower temperature tolerance.
Date: August 1999
Creator: Ford, Tiiu Kirsti, 1972-

Black and White Members and Ministers in the United Methodist Church : A Comparative Analysis

Description: Two primary sources of data were utilized: official church records, and a questionnaire survey administered to a random sample of Anglo and African-American United Methodists in the North Texas area. Questions covered socio-demographic and theological matters as well as perceptions of racism in the church. Ministers and lay members were surveyed separately.
Date: August 1991
Creator: Dunagin, Richard L. (Richard Lee)

Black Nationalism Reinterpreted

Description: Black nationalism responded to America's failure to examine the effects of slavery's legacy. Its aims represent those issues that were either unsupported by or in opposition to the goals of the civil rights leadership. In particular, the civil rights movement dismissed any claims that the history of slavery had a lasting effect on African-Americans. This conflict developed because of mainstream America's inability to realize that the black community is not monolithic and African-Americans were differentially affected by slavery's legacy. It is those blacks who are most affected by the culture of poverty created by America's history of slavery who make up today's inner-city populations. Despite successes by the civil rights movement, problems within lower-class black communities continue because the issues of the black underclass have not yet been fully addressed.
Date: May 1995
Creator: Largent, Mark Aaron

I, Blavatsky: A One-Act Opera

Description: I, Blavatsky is a one-act opera based on the life of Helena Petrovna Blavatsky, a nineteenth-century Russian princess and co-founder of a religious organization called the Theosophical Society. The libretto, by the composer, involves a cast of three principal soloists and minor roles for six more singers who are also participants in a small chorus. The text format features free verse alternating with regular, rhymed strophes. Accompaniment is provided by a piano. Melodic structure combines some nineteenth-century Romantic idioms with twentieth-century style. Most of the melodic and harmonic material was intuitively composed to express the text. Rhythmic and stylistic contrasts are accomplished in the representation of the extensive travels of the main character. Stage directions involve a stylized set, several scenes requiring minimal set changes, magical effects to represent that facet of Blavatsky's life, and onstage costume changes for several characters. Approximate duration is one hour.
Date: May 1990
Creator: Cooper, Steve, 1951 Dec. 4-

Blood Pressure Regulation During Simulated Orthostatism Prior to and Following Endurance Exercise Training

Description: Cardiovascular responses and tolerance to an orthostatic stress were examined in eight men before and after eight months of endurance exercise training. Following training, maximal oxygen consumption and blood volume were increased, and resting heart rate reduced. Orthostatic tolerance was reduced following training in all eight subjects. It was concluded that prolonged endurance training decreased orthostatic tolerance and this decrease in tolerance appeared associated with attenuated baroreflex sensitivity and alterations in autonomic balance secondary to an increased parasympathetic tone noted with training.
Date: May 1992
Creator: Stevens, Glen Harold John

The Blurred Boundaries between Film and Fiction in Salman Rushdie's Midnight's Children, The Satanic Verses, and Other Selected Works

Description: This dissertation explores the porous boundaries between Salman Rushdie's fiction and the various manifestations of the filmic vision, especially in Midnight's Children, The Satanic Verses, and other selected Rushdie texts. My focus includes a chapter on Midnight's Children, in which I analyze the cinematic qualities of the novel's form, content, and structure. In this chapter I formulate a theory of the post-colonial novel which notes the hybridization of Rushdie's fiction, which process reflects a fragmentation and hybridization in Indian culture. I show how Rushdie's book is unique in its use of the novelization of film. I also argue that Rushdie is a narrative trickster. In my second chapter I analyze the controversial The Satanic Verses. My focus is the vast web of allusions to the film and television industries in the novel. I examine the way Rushdie tropes the "spiritual vision" in cinematic terms, thus shedding new light on the controversy involving the religious aspects of the novel which placed Rushdie on the most renowned hit-list of modern times. I also explore the phenomenon of the dream as a kind of interior cinematic experience. My last chapter explores several other instances in Rushdie's works that are influenced by a filmic vision, with specific examples from Haroun and the Sea of Stories, "The Firebird's Nest," and numerous other articles, interviews, and essays involving Rushdie. In my conclusion I discuss some of the emerging similarities between film and the novel, born out of the relatively recent technology of video cassette recorders and players, and I examine the democratizing effects of this relatively new way of seeing.
Date: August 1999
Creator: Quazi, Moumin Manzoor

Body Image as Mediated by Age, Sex, and Relationship Status

Description: Traditionally, body image research has focused on young women. However, there are indications of cultural shifts which extend physical appearance pressures to both men and women, as well as to middle-aged and older adults. Two hundred and ten subjects were administered objective body image measures including the Figure Rating Scale, the Body Shape Questionnaire, and the Multidimensional Body-Self Relations Questionnaire, as well as projective measures including the Holtzman Inkblot Technique and the Draw-A-Person. The NEO-Five Factor Inventory and the Social Anxiety Subscale were also used to explore variables which might covary with body image. A 3 X 2 X 2 Multivariate Analysis of Covariance (MANCOVA) was utilized with social desirability as the covariate.
Date: December 1993
Creator: Cooper, Caren C. (Caren Connie)

Bohuslav Martinu: An Examination of Selected Chamber Music Involving the Clarinet

Description: The discussion dealt with stylistic influences, compositional techniques, and performance considerations of chamber music involving clarinet composed by Bohuslav Martinu and included a performance of three of his works: Quartet. for clarinet, horn, cello, and side drum, Madrigals for oboe, clarinet, and bassoon, and Sextet for flute, oboe, clarinet, two bassoons, and piano. The selections performed and discussed in the lecture show compositional growth of the composer through the three periods of his life in which he composed chamber music which included winds. These three time periods are 1923-40 during his residency in Paris, 1941-56 during his residency in the United States, and 1957 until his death in 1959 when he returned permanently to Europe.
Date: December 1997
Creator: Walzel, Robert L.

Bolshevik Britain: An Examination of British Labor Unrest in the Wake of the Russian Revolution, 1919

Description: The conclusion of the First World War brought the resumption of a struggle of a different sort: a battle between government and labor. Throughout 1919, government and labor squared off in a struggle over hours, wages, and nationalization. The Russian Revolution introduced the danger of the bolshevik contagion into the struggle. The first to enter into this conflict with the government were the shop stewards of Belfast and Glasgow. The struggle continued with the continued threats of the Triple Alliance and the police to destroy the power of the government through industrial action. This thesis examines the British labor movement during this revolutionary year in Europe, as well as the government's response to this new danger.
Date: August 1993
Creator: Mitchell, John A., 1966-

The Bombay Stock Exchange: tests of market efficiency

Description: This dissertation analyzes the efficiency of the Bombay Stock Exchange (BSE) and the relationship of stock return patterns on the BSE with those of the New York Stock Exchange (NYSE). The data includes daily closing values of the BSE and S&P 500 Indexes for the period 1979-1990 and bi-weekly closing prices on 27 of the most active stocks on the BSE for the period 1980-1990.
Date: August 1991
Creator: Ignatius, Roger

Bonaro Wilkinson Overstreet: Her Significance in Adult Education

Description: The purpose of this study was to determine Bonaro Wilkinson Overstreet's significance and development as a leader in adult education. This study provided information on her life, her individual and collaborative contributions with Harry Overstreet in adult education, and her interest in poetry. Data were collected using online database searching; review of published, unpublished, and informal documents of Bonaro Overstreet; and correspondence and interviews with professional colleagues, employers, and personal acquaintances. Interviews were conducted with current authorities in the field of adult education for informational purposes. Bonaro Overstreet did not influence or alter the course of adult education as a field of study. Her strength was in her role of practitioner and contributor to research, theory, and professional development of the adult education field. She broadened the depth of adult education as an advocate of knowing oneself and acting responsibly in the context of democratic responsibility.
Date: May 1990
Creator: Dorman, Brigid Byrne