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91
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75
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71
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62
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45
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43
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1,051 Matching Results
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Precision Atomic Spectroscopy with an Integrated Electro- Optic Modulator and DBR Diode Laser at 1083nm
Access:
Use of this item is restricted to the UNT Community
We have explored the use of recently developed high speed integrated electro optic modulators and DBR diode lasers as a tool for precision laser studies of atoms. In particular, we have developed a technique using a high speed modulator as a key element and applied it to the study of the fine structure of the 23P state of atomic helium. This state has been of long standing interest in atomic physics and its study has been the aim of several recent experiments using various precision techniques. We present our method and results, which will describe a new method for determining the fine structure constant, and lead to a precision test of atomic theory.
Date:
December 1999
Creator:
Castillega, Jaime
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Presentation of Current Research on Partitions of Lines and Space
We present the results from three papers concerning partitions of vector spaces V over the set R of reals and of the set of lines in V.
Date:
December 1999
Creator:
Nugen, Frederick T.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Remembering the Forgotten Beauty of Yeatsian Mythology: Personae and the Problem of Unity in The Wind Among the Reeds
Remembering the Forgotten Beauty of Yeatsian Mythology: Personae and the Problem of Unity in The Wind Among the Reeds
Date:
December 1999
Creator:
Tomkins, David S.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Resurrexit from Hector Berlioz's Messe solennelle (1825): A Case Study in Self-Borrowing
Hector Berlioz's Messe solennelle, his first publicly performed work, was important to his establishment in Paris as a composer. Although he later destroyed the Mass, he reused parts of the Resurrexit movement in three of his later works: Benvenuto Cellini (1836), the Grand messe des morts (1837), and the Te Deum (1849). This study examines the Resurrexit and its subsequent borrowings. In each instance that Berlioz borrowed from the Resurrexit, he extracted large sections and placed them in the context of later works. Each time that borrowing occurred, Berlioz constructed the surrounding music so that portions from the Resurrexit would fit stylistically and a seamlessly into the texture. In each borrowing, he left the melody unaltered, changing harmony and orchestration instead. This pattern of borrowing demonstrates that Berlioz developed his concept of melody early in his career, and that his method of self-borrowing was consistent in each subsequent use of the Resurrexit.
Date:
December 1999
Creator:
Gill, Sarah M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Scientific Considerations of Olestra as a Fat Substitute
Olestra is, a sucrose polyester, a noncaloric fat substitute, made from sucrose and several fatty acid esters. It has been approved by the FDA as a food additive used in preparing low-fat deep-frying foods such as savory snacks. Available literature on olestra was evaluated that had both positive and negative connotations. Clinical trials in numerous species of animals including humans were conducted to determine if olestra would affect the utilization and absorption of macro- and micronutrients; the effects of olestra on growth, reproduction, or its toxicity were also examined. The roles of olestra as a fat substitute, how it could effect on humans and the environment, and the potential impacts from its use in large amounts were assessed. Olestra can be removed from the environment by aerobic bacteria and fungi which may be isolated from activated sludge and soils.
Date:
December 1999
Creator:
Rattagool, Kullakan
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Syllabus Outline for Genetics Lecture and Laboratory
This work is intended to be used as a teaching tool in conjunction with the text cited. It is written in outline format, highlighting the major concepts of each pertinent chapter. In this format, the concepts can be expanded upon at the discretion of the instructor. This work is to be used as a guide for lecture. The basic concepts contained in the outline are in such a format as to be able to work in more information regarding the subject matter if needed. The instructor can work from this outline as a starting point. Major topics in the chapters are highlighted, making lecture notes for the instructor easier to do.
Date:
December 1999
Creator:
Preston, E. Lynn
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Techniques of Sensual Perception: The Creation of Emotional Pathways
Access:
Use of this item is restricted to the UNT Community
Some artists strive to create artwork that has aesthetic value. If a piece of artwork has the ability to capture the attention of an audience, it must contain strong sensual attributes. Thus, understanding how to design an art form to contain strong sensual attributes may increase the possibility of an aesthetic experience. Since aesthetics is an experience of sensations perceived when in contact with a creative form in any artistic discipline, it is necessary for an artist to understand the nature of the sensual experience. In understanding the sensual experience, artists may be able to create techniques to enhance the aesthetic experience of their work. My video piece, entitled Ararat is a study of methods to enhance the sensual experience. I hope to accomplish this by means of using techniques that optimize an audience's perceptual experience.
Date:
December 1999
Creator:
Henry, Jon L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Toward a Rhetoric of Marketing for High-Tech Services
The market for high-tech services is expanding, and writers will have to create more documents to market these services. Researchers note marked differences between traditional goods marketing and services marketing. A rhetorical framework for high-tech services marketing will give writers a tool for creating effective marketing messages. This study examines the five canons of rhetoric in their classical context, and then examines how the first professional teachers, the Sophists, used rhetoric to promote their services. The canons of rhetoric are then analyzed to show their modern significance. This study also considers visual rhetoric and how writers can use it effectively. This study shows that companies should promote service quality and strong service relationships through the rhetorical element of ethos. This study examines services marketing samples through a visual and verbal rhetorical framework, providing rhetorical insights that writers can use in their work.
Date:
December 1999
Creator:
Willerton, David Russell
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Biotic Factors and Temperature Tolerances via Critical Thermal Methodology in Goldfish
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-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Characteristics of Children With Behavior Disorders Who Drop Out of Therapy
The purpose of this study was to examine the characteristics that distinguish children with behavior disorders who drop out of psychotherapy treatment from those who remain in treatment. The sample included 379 children (268 male and 111 female) who were diagnosed with a behavior disorder at Dallas County Mental Health/Mental Retardation (MH/MR), a community mental health clinic in Dallas, Texas. The results indicated that certain characteristics increased the likelihood that a child would drop out of therapy, including reliance on aid, the presence of maternal psychopathology, and more severe externalizing and internalizing behaviors. This study also found that younger children with behavior disorders had a greater probability of dropping out of treatment. Minority status, gender, parent marital status, and referral source were not found to be associated with dropping out of treatment. Future studies should focus on specific interventions that clinicians could employ to deter premature termination from treatment.
Date:
August 1999
Creator:
Durrant, Sarah L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Comparative Mitochondrial DNA Sequence Diversity in Isolated and Open Populations of Southern Flying Squirrels
Access:
Use of this item is restricted to the UNT Community
Three populations of Southern flying squirrels were studied in the Ouachita Mountains of Arkansas to assess the impact of population subdivision-due to island formation--on the population genetics of Glaucomys volans. One island, one mainland, and one open population were investigated. A 367 nucleotide hypervariable region of mitochondrial DNA was sequenced in individuals from each population. Individuals and populations were compared to assess relatedness. Higher sequence diversity was detected in the open and island populations. One island individual shared characters with both the island and mainland populations. Results support the hypothesis that the mainland population may have reduced gene flow. Also, the island population may have been originally founded by at least two maternal lineages.
Date:
August 1999
Creator:
Cook, Melaney Birdsong
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A Comparison of Points Versus Sounds as Reinforces in Human Operant Research
Research shows that human operant behavior typically differs from non-human operant behavior on schedules of reinforcement. These differences in performance may be related to differences between the experimental preparations used to study human and non-human operant behavior. One such difference is the type of reinforcer used. This experiment analyzed the differential effects of points alone, points backed up by money, and sounds on schedule performance of human subjects. Results show that sounds generated moderate rates of responding, capable of change in either direction. When points backed up with money were the reinforcers, however, high rates of behavior were generated, disrupting the previously established baseline performance. This suggests that while points may be effective in generating high rates of behavior, they may be ineffective in producing sensitive baselines needed to study human operant behavior on schedules of reinforcement.
Date:
August 1999
Creator:
Rouse, Susan L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Contributing Risk Factors in the Association Between Sexual Abuse Experiences and Disturbed Eating Patterns in College Females
This study examined two theoretical factors proposed to explain the relationship between sexual abuse experiences and disturbed eating patterns. Over 300 women completed questionnaires designed to assess sexual abuse histories, bodily shame, body disparagement, and disordered eating behaviors. Multivariate analyses indicated that bodily shame, body image dysphoria, and bodily dissatisfaction were significantly higher in participants with previous sexual violations. In addition, disordered eating symptoms and behaviors were related to reported severity of sexual abuse experiences. However, the relationship between the severity of disturbed eating patterns and sexual abuse histories appears to be more meaningful in relation to the presence of bodily shame and body dissatisfaction, as proposed in previous research. Future research implications are discussed.
Date:
August 1999
Creator:
Tripp, Margaret Murphy
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Control over Therapist Interactions as a Reinforcer for a Child with Autism
This study evaluated whether therapist terminations of social interactions would decrease social terminations and increase social initiations during play activities with a child with autism. The assessment took place in two conditions. The first condition, instructed involved social interactions with instructions delivered, and the second, uninstructed, involved social interactions without instructions delivered. These conditions were analyzed with a multiple baseline across-conditions design. Interaction duration, initiations, instructions, and child terminations were recorded. This study showed that the therapist-removal procedure resulted in a complete decrease in child terminations, and an increase in the number of initiations and the duration of the child-therapist interactions during the uninstructed condition. Similar effects were seen in the instructed condition, but to a lesser degree.
Date:
August 1999
Creator:
Edwards, William Harrison
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Development of IAM District Lodge 776 in Fort Worth, Texas, 1942-1946: A Case Study in the Growth of Organized Labor During World War II
This thesis concentrates on a local union of the International Association of Machinists (IAM), District Lodge 776, of Fort Worth, Texas, during the war years. The main argument of the thesis runs along three basic lines. First, it demonstrates that the experiences of the Fort Worth Machinists clearly fit into the national labor movement during the war years. Second, it argues that the existence, survival, and strength of the union depended greatly on outside forcesan expanding national economy, a powerful national union, and a generally labor-friendly government. Third, it shows that union officers and rank-and-file members used their bases of strengththe national economy, the national IAM, and the federal governmentto build an effective local labor organization.
Date:
August 1999
Creator:
White, Kirk
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Effects of a Remote-Controlled Tactile Prompt on the Initiation Skills of a Child with Autism
A 4-year old child with autism was taught to make a social initiation statement following a remote-controlled tactile prompt (RCT). The RCT prompt was taught by using a time-delay procedure with written script cards containing initiation statements. Training trials occurred in 6 different play locations in the child's room. Restricted Trial training consisted of allowing the child to play independently, activating the RCT prompt and playing with the child based on any initiation until a warning to end was given. In Free Play training, the warning to end the activity was removed. The child's initiation statements increased from 0 in baseline, to spontaneous initiations in 100% of the trials in all training and generalization phases. The number of words in an initiation statement increased from 3 to 25 per trial. Spontaneous initiations in the No RCT phase generalized to the child's mother without training.
Date:
August 1999
Creator:
Bingham-Watts, Kera L.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Effects of Modeling, Roleplaying and Feedback on the Performance of Teachers of Children with Autism
Teachers providing treatment to children with autism are responsible for implementing numerous procedures. Teacher training has not been addressed extensively in the literature. This study employed a multiple baseline design to evaluate the effects of a training package incorporating modeling, roleplaying and feedback on teacher performance. Results indicated that the teacher implemented correct teaching episodes following training. Changes in teacher performance were only observed when the training package was applied to each setting and skill area. As a result of changes in teacher behavior, the child demonstrated an increase in the number of desired responses. Results are discussed in the context of generalization, training package components, cost-benefit of single-subject designs, and limitations of the study.
Date:
August 1999
Creator:
Edwards, Carla Ward
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Ethnic Identity, Gay Identity and Sexual Sensation Seeking: HIV Risk-taking Predictors Among Men of Color Who Have Sex with Men
This study examined relationships among ethnic identity, gay identity, sexual sensation seeking, and HIV risk-taking behaviors among 302 men of color recruited from gay bars, bathhouses, community agencies, and the 1998 United States Conference on AIDS. The sample included 24% African American, 28% Latino, 25% Asian/ Pacific Islander, 19% Caucasian, 1% American Indian, and 3% other ethnicity. Logistic regression analysis identified sexual sensation seeking, having an undefined gay identity, being in a sexually exclusive relationship, not being HIV seronegative, and length of stay in the country (for those born overseas) as significant predictors of unprotected anal intercourse (insertive and penetrative) among men of color who have sex with men.
Date:
August 1999
Creator:
Géliga-Vargas, Jesús A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Exhibit Eh: Canadian Dependency, U.S. Hegemony, and the Amorphousness of English Canadian Culture
This thesis begins by examining the factors that have resulted in the dependent nature of Canada's political and economic structure, and proceeds to examine how this has contributed to the cultural amorphousness of English Canadian identity. The hegemonic authority of American and trans-national interests, established and maintained in the cultural sphere through the extensive monopoly of the distribution of cultural and media products, perpetuates the amorphousness of English Canadian culture through the appropriation of Canadian space by the international image industry. Such categorization of Canadian space reflects and perpetuates the imaginary representation of Canada within the dominant ideology as an indistinct and amorphous entity, and comes to usurp the materiality that constructs the lived identities of English Canadians.
Date:
August 1999
Creator:
McIntosh, Andrew
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Father Absence, Onset of Menarche, and Body Dissatisfaction: Importance of Father Absence
Relationships between body dissatisfaction, dieting methods, father absence, and puberty timing were investigated in this study. Participants included adolescent females from Wave 1 of the National Longitudinal Survey of Adolescent Health. Logistic regression results indicated that girls without a biological father in the home were significantly more likely to have an early onset of puberty than on-time or late. Girls who experienced early puberty exhibited higher levels of body dissatisfaction, but didn't use more dieting methods. Early onset girls more likely used dieting methods if their biological father was present than absent; however, no significant difference in body dissatisfaction was shown. A negative relationship with fathers indicated more body dissatisfaction. None of the attained findings were found when the biological mother was absent, and having a stepfather did not seem to matter. Evidence was revealed that fathers play a role in their daughters' view of their own bodies.
Date:
August 1999
Creator:
Gartrell, Stacey R.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Fourteen Seréstas of Heitor Villa-Lobos (1887-1959)
The Fourteen Seréstas of Heitor Villa-Lobos comprise a group of songs that expresses Villa-Lobos's compositional technique for the voice. These songs are challenging as a topic because not much historical or analytical research has been done on them. I approach the topic by providing historical background on the modinha and how it relates to the serésta. This is followed by a descriptive analysis in the order of the set, which includes musical examples, chart diagrams, and comparisons of the seréstas to other works. I hope to have contributed valuable information to the research of these songs since Villa-Lobos wrote over ninety solo vocal songs which still await analysis and discussion. This thesis is a contribution toward narrowing this gap.
Date:
August 1999
Creator:
Sánchez, Noé
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Genetics Lecture and Laboratory Syllabus for a Junior-Level Course
The following is a complete syllabus for a college level genetics course. The syllabus contains lecture outlines and notes for each chapter, along with a list of transparencies needed. The quizzes and exams are prepared and placed at the beginning of the syllabus. The beginning of the course will consist of a lecture to introduce the students to the basics of genetics, followed by many applications of genetics. The process of cell division will be mastered by the students, as well as Mendelian genetics, quantitative genetics, chromosome mapping, and inheritance. The replication, synthesis, and organization of DNA are also discussed within the lectures. The final topics that will be covered using this syllabus are genetics of cancer and immunology and population genetics. These topics are essential for a detailed genetics course. The syllabus is written in great detail, and will require a full semester to be completed. The book used in association with this syllabus is Essentials of Genetics by William S. Klug and Michael R. Cummings.
Date:
August 1999
Creator:
Harper, Kasey
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Girl Power: Feminism, Girlculture and the Popular Media
This project is an interrogation of three examples from recent popular culture of girlculture, specifically texts that target young female consumers: the Spice Girls, Scream and Buffy the Vampire Slayer. These examples are fundamentally different than texts from earlier female targeted generic models because they not only reflect the influence of the feminist movement, they work on feminism's behalf. The project's methodology grows out of feminist film theories and cultural studies theories. One chapter is dedicated to each text, and each reading works to reappropriate girlculture texts for a counter-hegemonic agenda by highlighting the moments when each text manages to subvert its mass mediated conservative biases.
Date:
August 1999
Creator:
Smith, Ashley Lorrain
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
"God, Race and Nation": the Ideology of the Modern Ku Klux Klan
This research explores the ideology of the modern Ku Klux Klan movement in American society. The foci of study is on specific Ku Klux Klan organizations that are active today. These groups include: The Knights of the Ku Klux Klan; The New Knights of the Ku Klux Klan; The New Order Knights of the Ku Klux Klan, and The Knights of the White Kamellia. These groups are examined using frame analysis. Frame analysis allowed for the identification of the individual organization's beliefs, goals and desires. Data were gathered via systematic observations and document analysis. Findings identified several overarching ideological themes which classify the modern Ku Klux Klan movement.
Date:
August 1999
Creator:
Paul, John Michael, 1975-
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library