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Effects of Click + Continuous Food Vs. Click + Intermittent Food on the Maintenance of Dog Behavior. (open access)

Effects of Click + Continuous Food Vs. Click + Intermittent Food on the Maintenance of Dog Behavior.

There is disagreement among clicker trainers on whether or not food should be delivered every time the clicker (conditioned reinforcer) is used. However, presenting a conditioned reinforcer without food can weaken the strength of the conditioned reinforcer and also disrupt its discriminative stimulus function. A within subjects reversal design was used with 2 dogs to compare the behavioral effects of continuous pairings (C+F condition) vs. intermittent pairings (C+C+F condition) of the clicker with food. Results show that the C+C+F condition affects the frequency, accuracy, topography, and intensity of the behavior, and increases noncompliance and other unwanted behaviors. This study adds to the literature by evaluating the effects of conditioned reinforcement in an applied setting using discrete trials without undergoing extinction.
Date: May 2007
Creator: Wennmacher, Pamela L.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Assessment of a Library Learning Theory by Measuring Library Skills of Students Completing an Online Library Instruction Tutorial (open access)

Assessment of a Library Learning Theory by Measuring Library Skills of Students Completing an Online Library Instruction Tutorial

This study is designed to reveal whether students acquire the domains and levels of library skills discussed in a learning library skills theory after participating in an online library instruction tutorial. The acquisition of the library skills is demonstrated through a review of the scores on online tutorial quizzes, responses to a library skills questionnaire, and bibliographies of course research papers. Additional areas to be studied are the characteristics of the participants enrolled in traditional and online courses at a community college and the possible influence of these characteristics on the demonstrated learning of library skills. Multiple measurement methods, identified through assessment of library instruction literature, are used to verify the effectiveness of the library skills theory and to strengthen the validity and reliability of the study results.
Date: May 2007
Creator: Watson, Dana L.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Acculturation, Parental Control, and Adjustment among Asian Indian Women (open access)

Acculturation, Parental Control, and Adjustment among Asian Indian Women

The present study examines the relationship between acculturation, parental control, and psychological adjustment among adult first and second-generation Asian Indian women who have immigrated, or whose parents have immigrated to the United States, from the Indian state of Kerala. Data from 73 participants indicate second-generation immigrants report poorer psychological adjustment than do their counterparts. Additionally, regression analyses reveal discomfort towards Kerala culture significantly predicts depressive symptoms, while high maternal control predicts self-esteem. Qualitative data were collected to provide richer understanding of immigrants' adaptation to the U.S. Implications of this research may impact mental health practitioners' ability to improve quality of life with Asian Indian women from Kerala.
Date: May 2007
Creator: Varghese, Anitha
Object Type: Thesis or Dissertation
System: The UNT Digital Library
From "y as plus personne qui parle" to "plus personne ne dit rien": The variable use of the negative particle ne in synchronous French chat. (open access)

From "y as plus personne qui parle" to "plus personne ne dit rien": The variable use of the negative particle ne in synchronous French chat.

This study analyzes negative particle variation (i.e., the variable presence or absence of the negative particle ne) in synchronous French chat discourse within a labovian-inspired framework. Selected morphosyntactic, lexical, and phonological constraints are considered. Multivariate analyses performed by GoldVarb 2001 revealed that subject type (i.e., NP, [- overt] subject environment, pronoun) and the phonological environment preceding the position of neregardless of its presence or absenceare determining factors in the variation. In addition, discursive-pragmatic effect was explored in a sub-sample of data. The results indicate that ne is seldom present in verbal negation during explanatory discourse style, yet it is very likely to be retained in ludic, emphatic, and proverbial styles.
Date: May 2007
Creator: van Compernolle, Rémi A.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A paleozoological perspective on predator extermination and white-tailed deer (Odocoileus virginianus Boddaert) overabundance in central Texas. (open access)

A paleozoological perspective on predator extermination and white-tailed deer (Odocoileus virginianus Boddaert) overabundance in central Texas.

Archaeological and paleontological datasets are used in conservation to add time-depth to ecology. In central Texas several top carnivores including prehistoric Native American hunters have been extirpated or have had their historic ranges restricted, which has resulted in pest-level white-tailed deer (Odocoileus virginianus texana) populations in some areas. Predator extermination has dramatically reduced the average body size of members of the extant predator guild, and large carnivores most capable of hunting white-tailed deer are extirpated. Character release in the remaining “large” predatorsmesocarnivoresis a predicted outcome related to the adaptive vacuum at the top of the trophic hierarchy. Differences in body size of deer between prehistory and modernity are expected given that a lack of predation likely has increased intraspecific competition for forage among deer resulting in smaller body size today. In fact modern deer from settings without harvest pressure are significantly smaller than those from harvested areas and from prehistoric deer. From a natural history perspective, this research highlights potential evolutionary causes and effects of top-predator removal on deer populations and related components of biological communities in central Texas.
Date: May 2007
Creator: Wolverton, Steven J.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Multiple-respondent anecdotal assessments for behavior disorders; An analysis of interrater agreement and correspondence with treatment outcomes. (open access)

Multiple-respondent anecdotal assessments for behavior disorders; An analysis of interrater agreement and correspondence with treatment outcomes.

The current study was designed to further evaluate the usefulness of anecdotal assessments. The goal of this study was to evaluate the overall agreement between multiple respondents on the primary function of aberrant behavior using the Motivation Assessment Scale (MAS) and the Functional Analysis Screening Tool (FAST) and, if agreement was obtained, to assess the effectiveness of treatment based on the outcome of the assessments. Results showed that anecdotal assessments were able to identify the general type of contingency maintaining two participants' problem behavior. However, for one participant the assessments did not correctly identify the specific form of reinforcement (attention or tangible items) that maintained the aberrant behavior.
Date: May 2007
Creator: Wolf, Roxanne
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Artistic Expression in Music and Poetry (open access)

Artistic Expression in Music and Poetry

This paper delineates meaningful relationships of passions, emotions, feelings, affections, nuances and aural perceptions of expressions and utterances, for understanding human artistic possibilities historically and contemporarily in the fraternal arts of music and poetry, with reference to sounds, silences, sequences, rhythms, rhymes, repetitions, retards, accelerations, tempos, harmonies, melodies, forms, etc., in four poetic and three musical compositions uniquely created by its author.
Date: May 2007
Creator: Wertz, Charles Bradley
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Choral Works of Robert Ward: A View of His Compositional Approach to Text Settings and His Use of Symbols and Allusions (open access)

The Choral Works of Robert Ward: A View of His Compositional Approach to Text Settings and His Use of Symbols and Allusions

Robert Eugene Ward's impressive body of work encompasses almost every genre of music. He has composed symphonies, operas, large orchestral pieces, chamber works, solo instrumental pieces, extended choral works, short choral pieces, ceremonial works, a ballet, theatre pieces, and even jazz and swing band pieces. Ward's name is recognized in most musical circles but usually only for his opera The Crucible, a work for which he earned a Pulitzer Prize in 1962. In fact, a survey of all the dissertations, articles, interviews, and books written about Robert Ward shows that the vast majority of these studies focus on his most famous opera. His choral works, though they comprise some of Ward's most expressive work, have received little attention. Ward's works show a deliberate use of symbols and allusions. While this use is far from an innovative concept in composition, Ward distinguishes himself with a consistent and purposeful application of these devices establishing an unmistakable interweaving of text, composition, and context. This study examines several of Ward's short choral compositions as they relate to the composer's use of symbols and allusions. Comparisons are made to Ward's use of these devices in his operatic works as a means of determining the consistency …
Date: May 2007
Creator: Tucker, Carlton S.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A test of the effects of linguistic stereotypes in children's animated film: A language attitude study. (open access)

A test of the effects of linguistic stereotypes in children's animated film: A language attitude study.

This study examined the claim that animated films influence childrens' opinions of accented-English. Two hundred and eighteen 3rd through 5th graders participated in a web-based survey. They listened to speakers with various accents: Mainstream US English (MUSE), African American Vernacular English (AAVE), French, British, and Arabic. Respondents judged speakers' personality traits (Work Ethic, Wealth, Attitude, Intelligence), assigned jobs/life positions, and provided personal information, movie watching habits, and exposure to foreign languages. Results indicate: (1) MUSE ranks higher and AAVE lower than other speakers, (2) jobs/life positions do not correlate with animated films, (3) movie watching habits correlate with AAVE, French, and British ratings, (4) foreign language exposure correlates with French, British, and Arabic ratings.
Date: May 2007
Creator: Trowell, Melody
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The Sarabandes from J. S. Bach's Six Suites for Solo Cello: An Analysis and Interpretive Guide for the Modern Guitarist (open access)

The Sarabandes from J. S. Bach's Six Suites for Solo Cello: An Analysis and Interpretive Guide for the Modern Guitarist

The purpose of this dissertation is to present a comparative analysis of the sarabandes from the six cello suites. Six individual analyses each address the following elements: harmonic reduction, the relationship between the large-scale harmonic and metrical structures, the melodic elaboration of the harmonic-metrical structure, and the type and prevalence of sarabande rhythm. A summary at the end of each analysis provides a cumulative comparison of the results. Knowledge gained from this exercise will provide insight into Bach's conception of the genre by identifying both those features that stylistically unify the sarabandes as well as those that make each unique. In addition, the author will demonstrate the relationship between analysis and interpretation, using the sixth sarabande as an example. This interpretive process will also take into account the idiomatic nature of the guitar.
Date: May 2007
Creator: Todd, Richard
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The relationship between Adlerian personality priorities of clients and counselors and the therapeutic working alliance. (open access)

The relationship between Adlerian personality priorities of clients and counselors and the therapeutic working alliance.

The purpose of this research was to determine if a relationship exists between quality of the therapeutic working alliance and counselors' and clients' Adlerian personality priorities. Variables included counselors' and clients' Adlerian personality priorities and ratings of working alliance. Information for counselors' and clients' Adlerian personality priorities was obtained on the Allen Assessment for Adlerian Personality Priorities (AAAPP; Allen, 2005). Working alliance was measured with the Working Alliance Inventory- short revised (WAI-SR; Hatcher & Gillaspy, 2006). Participants included 14 counselors and 31 clients from a community counseling clinic on a university campus in the southwest United States. Results suggested that match between counselors' and clients' Adlerian personality priorities is related to counselors' perceptions of quality of the therapeutic working alliance. Statistically significant values were found on one hypothesis, as well as large effect sizes.
Date: May 2007
Creator: Shojaian, Gina Christine
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Cities Beyond (open access)

Cities Beyond

Cities Beyond is a collection of poems about the liminal space between the suburbs and the pasture as metaphor for the created space of memory, self, and location.
Date: May 2007
Creator: Shattuck, David
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Factor Structure of the Neurocognitive Battery in a Geriatric Sample with Cognitive Impairments (open access)

Factor Structure of the Neurocognitive Battery in a Geriatric Sample with Cognitive Impairments

The present study was designed to empirically validate six theoretically derived cognitive domains (verbal memory, visual memory, working memory, attention-concentration, executive functions, and visuospatial abilities) assessed by a comprehensive battery of neuropsychological tests used in the Geriatric Memory Clinic at the University of North Texas Health Science Center in Fort Worth, Texas. The study examined the extent to which various cognitive dimensions are tapped by this battery in a heterogeneous geriatric sample of 114 patients with cognitive impairments. The proposed six-factor model of cognitive functioning has not been supported. Further exploratory factor analysis arrived at a five-factor solution. Factor pattern of the 23 tests supported the following five dimensions: memory, executive control, attention, visuospatial abilities, and cognitive flexibility.
Date: May 2007
Creator: Serova, Svetlana
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Analysis of the Expression Profiles of Two Isoforms of the Antifungal Protein Osmotin from Gossypium hirsutum (open access)

Analysis of the Expression Profiles of Two Isoforms of the Antifungal Protein Osmotin from Gossypium hirsutum

The expression of two cotton osmotin genes was evaluated in terms of the mRNA and protein expression patterns in response to chemical inducers such as ethylene, hydrogen peroxide, and sodium chloride. Reverse transcriptase-polymerase chain reactions (RT-PCR) indicated that osmotin mRNAs are expressed constitutively in root tissues of cotton plants, and that they are rapidly induced in leaf and stem tissues upon ethylene treatment. Real time RT-PCR indicated that osmotin transcript levels were induced 2 to 4 h after treatment with ethephon. The osmotin mRNA levels appear to increase 12 h after treatment, decrease, and then increase again. The osmotin protein expression patterns were analyzed in Western blot analyses using an anti-osmotin antibody preparation. A 24-KDa protein band was detected from cotton plants treated with the inducers. The 24-KDa osmotin proteins were induced 4 h after treatment with ethephon, while down-regulated 96 h after treatment. Multiple osmotin isoforms were observed to be induced in cotton plants upon treatment with ethephon by two-dimensional gel electrophoresis. One goal of this dissertation research was to genetically engineer two cotton osmotin genes to routinely overproduce their antifungal proteins in transgenic Arabidopsis and cotton plants as a natural defense against fungal infections, using co-cultivation with Agrobacterium …
Date: May 2007
Creator: Spradling, Kimberly Diane
Object Type: Thesis or Dissertation
System: The UNT Digital Library
The historical significance of professional contributions of a leader in the field of emotional and behavioral disorders in special education: A qualitative case study of Richard J. Whelan. (open access)

The historical significance of professional contributions of a leader in the field of emotional and behavioral disorders in special education: A qualitative case study of Richard J. Whelan.

Historical documentation of the impact of PL 88-164 on the field of emotional and behavioral disorders (E/BD) and the development and implementation of teacher-training programs for children and youth identified as E/BD is limited. This study was designed to document the historical significance and professional contributions of Dr. Richard J. Whelan, Professor Emeritus, University of Kansas and his work in the development of teacher preparation training programs in the field of E/BD in institutions of higher education (IHE). The second purpose of this study was to document the legislative and program initiatives that have impacted the services, education, teaching, and research initiatives in the field of E/BD as interpreted by Dr. Whelan. The final purpose of this study was to examine the views of Dr. Whelan regarding the need for future developments in the field of E/BD. Legislative and policy efforts continue to change the climate in which children are educated. The field of special education relies on the efficacy of the training programs in IHE to provide appropriate teaching and research efforts in a manner that is consistent with the current needs of students with E/BD, their families, and the schools in which they seek to be educated. As …
Date: May 2007
Creator: Smythe, Carolyn N.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Preliminary design of a cryogenic thermoelectric generator. (open access)

Preliminary design of a cryogenic thermoelectric generator.

A cryogenic thermoelectric generator is proposed to increase the efficiency of a vehicle propulsion system that uses liquid nitrogen as its fuel. The proposed design captures some of the heat required for vaporizing or initial heating of the liquid nitrogen to produce electricity. The thermoelectric generator uses pressurized liquid nitrogen as its cold reservoir and ambient air as the high-temperature reservoir to generate power. This study concentrated on the selection of thermoelectric materials whose properties would result in the highest efficiency over the operating temperature range and on estimating the initial size of the generator. The preliminary selection of materials is based upon their figure of merit at the operating temperatures. The results of this preliminary design investigation of the cryogenic thermoelectric generator indicate that sufficient additional energy can be used to increase overall efficiency of the thermodynamic cycle of a vehicle propulsion system.
Date: May 2007
Creator: Sivapurapu, Sai Vinay Kumar
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Examination of the Relationship Between Teacher Efficacy and Teachers' Perceptions of Their Principals' Leadership Behaviors (open access)

An Examination of the Relationship Between Teacher Efficacy and Teachers' Perceptions of Their Principals' Leadership Behaviors

Over the years there has been significant discussion of the connection between principal's leadership qualities and teacher efficacy. Students come to the classroom from stable, traditional, supportive home environments as well as from unstable, broken, and homeless situations. Teachers are asked to teach a classroom full of students with a wide range of learning abilities as well as a varied range of learning disabilities. The confidence to do this for the measure of a teacher's career takes a strong sense of efficacy. The purpose of this study was to examine the relationship between teachers' sense of efficacy and teachers' perceptions of their principals' leadership qualities that enhance and/or diminish the teachers' sense of efficacy. This study utilized both quantitative and qualitative research methods to study the effects of leadership qualities on teacher efficacy. Quantitative data was acquired utilizing the teacher sense of efficacy scale and the principal leadership questionnaire. Qualitative data was gathered through a focus group meeting of teachers with measurably strong efficacy to identify principal practices that affect teachers' efficacy. The study's outcomes reported that total respondent data indicates a generally positive relationship between these two variables. Subgroup analysis revealed varying results with diminishing relationships measured from elementary …
Date: May 2007
Creator: Ryan, Harry D.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Reflections on diversity: Graduate perceptions of campus climate at Dallas Theological Seminary, 1996-2005. (open access)

Reflections on diversity: Graduate perceptions of campus climate at Dallas Theological Seminary, 1996-2005.

The purpose of this study was to determine how graduates of master's degree programs perceived the ethnic and cultural climate at Dallas Theological Seminary (DTS) during their enrollment there. The population (N=2,223) consisted of graduates of master's degree programs who attended Dallas Seminary from 1996-2005. The study utilized a non-experimental design methodology using a mailed survey questionnaire. A 37.2 % response rate was achieved. Most results were statistically significant at the .05 alpha level utilizing chi-square goodness-of-fit tests.
Date: May 2007
Creator: Roy-Woods, Sabrina M.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
ADA Compliance and Accessibility of Aquatic Facilities in the North Texas Area (open access)

ADA Compliance and Accessibility of Aquatic Facilities in the North Texas Area

The purpose of this study was to determine the degree to which existing aquatic facilities in the North Texas metroplex complied with the 1991 Americans with Disabilities Act Accessibility Guidelines (ADAAG) and the proposed Americans with Disabilities Act Accessibility Guidelines: Recreation Facilities (ADAAG supplement). Fifty-two aquatic facilities were evaluated based on: parking lot, ticket counter, gate/entry, restroom, dressing area, drinking fountain, pathway, and pool entry method structural domains. Physical measurements and a few direct observations were recorded on the survey instrument. Surveys were then reviewed and facility scores were tabulated. No facility was found to be 100% compliant with ADAAG and the ADAAG supplement. Aquatic facilities are already struggling to catch up with the 1991 ADAAG, but when the United States Department of Justice approves the proposed ADAAG supplement, aquatic facilities will fall even further behind.
Date: May 2007
Creator: Pike, Hilary Eryn
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A nano-CMOS based universal voltage level converter for multi-VDD SoCs. (open access)

A nano-CMOS based universal voltage level converter for multi-VDD SoCs.

Power dissipation of integrated circuits is the most demanding issue for very large scale integration (VLSI) design engineers, especially for portable and mobile applications. Use of multiple supply voltages systems, which employs level converter between two voltage islands is one of the most effective ways to reduce power consumption. In this thesis work, a unique level converter known as universal level converter (ULC), capable of four distinct level converting operations, is proposed. The schematic and layout of ULC are built and simulated using CADENCE. The ULC is characterized by performing three analysis such as parametric, power, and load analysis which prove that the design has an average power consumption reduction of about 85-97% and capable of producing stable output at low voltages like 0.45V even under varying load conditions.
Date: May 2007
Creator: Vadlmudi, Tripurasuparna
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Motives, Allusions, and Eclecticism: A Panametric Analysis of the First Movement of Christian Lindberg's Mandrake in the Corner Based on the Method of Jan LaRue (open access)

Motives, Allusions, and Eclecticism: A Panametric Analysis of the First Movement of Christian Lindberg's Mandrake in the Corner Based on the Method of Jan LaRue

For more than 20 years, Christian Lindberg has been internationally recognized as the premiere trombone soloist of our time. Few, however, are familiar with his compositions. For over ten years, he has composed many solo and ensemble works for trombone. Many prominent musical organizations in the world have performed Lindberg's music, including the Chicago Symphony Orchestra, the St. Paul Chamber Orchestra, and the University of North Texas Wind Ensemble. Today, Christian Lindberg has commission requests up to 2010. Christian Lindberg completed Mandrake in the Corner, a three movement concerto for trombone, in 1999. The purpose of this dissertation is to present an analysis of the first movement of Mandrake in the Corner to provide the first in depth study of Lindberg's compositional style. This analysis borrows freely from the method of Jan LaRue, which focuses on sound, harmony, melody, rhythm, and growth of musical structure on the small, middle, and large levels. The focus of this study centers on the aspects of melody, harmony, and rhythm to explain how the piece works despite the lack of a second theme or change of key in the first movement.
Date: May 2007
Creator: Underwood, Michael
Object Type: Thesis or Dissertation
System: The UNT Digital Library
A Futile Quest for a Sustainable Relationship in Welty's Short Fiction (open access)

A Futile Quest for a Sustainable Relationship in Welty's Short Fiction

Eudora Welty is an author concerned with relationships between human beings. Throughout A Curtain of Green and Other Stories, The Wide Net and Other Stories, and The Golden Apples, Welty's characters search for ways in which to establish and sustain viable bonds. Particularly problematic are the relationships between opposite sexes. I argue that Welty uses communication as a tool for sustaining a relationship in her early work. I further argue that when her stories provide mostly negative outcomes, Welty moves on to a illuminate the possibility and subsequent failure of relationships via innocence in the natural world. Finally, Welty explores, through her characters, the attempt at marginalization and the quest for relationships outside the culture of the South.
Date: May 2007
Creator: Lancaster, Daniel
Object Type: Thesis or Dissertation
System: The UNT Digital Library
An Analysis of Sample Duration in a Parent Training Program. (open access)

An Analysis of Sample Duration in a Parent Training Program.

Although several guidelines are available for designing observational procedures in both basic and applied settings, few researchers have experimentally examined and compared different direct observation methods. Such methods may have a direct impact on practitioners' ability to effectively assess strengths and challenges, set treatment goals, adjust intervention procedures, and monitor progress. The current study compared 1 and 5 min observations to 10 min observations throughout baseline and intervention phases of a parent training program for toddlers with autism. Results showed similarities with regards to variability, level, and trend in the 5 and 10 min data samples; however, clear differences were seen in the 1 min data sample, which typically showed very low occurrences of responding and displayed steady and flat trends. The findings have implications for the development of time-efficient direct observation procedures utilized in parent training programs for children with autism.
Date: May 2007
Creator: Laino, Kathleen S.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Framing Femininity as Insanity: Representations of Mental Illness in Women in Post-Classical Hollywood (open access)

Framing Femininity as Insanity: Representations of Mental Illness in Women in Post-Classical Hollywood

From the socially conservative 1950s to the permissive 1970s, this project explores the ways in which insanity in women has been linked to their femininity and the expression or repression of their sexuality. An analysis of films from Hollywood's post-classical period (The Three Faces of Eve (1957), Lizzie (1957), Lilith (1964), Repulsion (1965), Images (1972) and 3 Women (1977)) demonstrates the societal tendency to label a woman's behavior as mad when it does not fit within the patriarchal mold of how a woman should behave. In addition to discussing the social changes and diagnostic trends in the mental health profession that define “appropriate” female behavior, each chapter also traces how the decline of the studio system and rise of the individual filmmaker impacted the films' ideologies with regard to mental illness and femininity.
Date: May 2007
Creator: Kretschmar, Kelly
Object Type: Thesis or Dissertation
System: The UNT Digital Library