Degree Level

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
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
System: The UNT Digital Library
Amorphization and De-vitrification in Immiscible Copper-Niobium Alloy Thin Films (open access)

Amorphization and De-vitrification in Immiscible Copper-Niobium Alloy Thin Films

While amorphous phases have been reported in immiscible alloy systems, there is still some controversy regarding the reason for the stabilization of these unusual amorphous phases. Direct evidence of nanoscale phase separation within the amorphous phase forming in immiscible Cu-Nb alloy thin films using 3D atom probe tomography has been presented. This evidence clearly indicates that the nanoscale phase separation is responsible for the stabilization of the amorphous phase in such immiscible systems since it substantially reduces the free energy of the undercooled liquid (or amorphous) phase, below that of the competing supersaturated crystalline phases. The devitrification of the immiscible Cu-Nb thin film of composition Cu-45% Nb has been studied in detail with the discussion on the mechanism of phase transformation. The initial phase separation in the amorphous condition seems to play a vital role in the crystallization of the thin film. Detailed analysis has been done using X-ray diffraction, transmission electron microscopy and 3D atom probe tomography.
Date: May 2007
Creator: Puthucode Balakrishnan, Anantharamakrishnan
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.
System: The UNT Digital Library
Analyzing Microwave Spectra Collected by the Solar Radio Burst Locator (open access)

Analyzing Microwave Spectra Collected by the Solar Radio Burst Locator

Modern communication systems rely heavily upon microwave, radio, and other electromagnetic frequency bands as a means of providing wireless communication links. Although convenient, wireless communication is susceptible to electromagnetic interference. Solar activity causes both direct interference through electromagnetic radiation as well as indirect interference caused by charged particles interacting with Earth's magnetic field. The Solar Radio Burst Locator (SRBL) is a United States Air Force radio telescope designed to detect and locate solar microwave bursts as they occur on the Sun. By analyzing these events, the Air Force hopes to gain a better understanding of the root causes of solar interference and improve interference forecasts. This thesis presents methods of searching and analyzing events found in the previously unstudied SRBL data archive. A new web-based application aids in the searching and visualization of the data. Comparative analysis is performed amongst data collected by SRBL and several other instruments. This thesis also analyzes events across the time, intensity, and frequency domains. These analysis methods can be used to aid in the detection and understanding of solar events so as to provide improved forecasts of solar-induced electromagnetic interference.
Date: May 2007
Creator: Kincaid, Cheryl-Annette
System: The UNT Digital Library
Analyzing the Effects of a Performance Pay Plan on Manager Performance in an Accounting Firm (open access)

Analyzing the Effects of a Performance Pay Plan on Manager Performance in an Accounting Firm

This study examined the effect of a score card¬-based performance pay plan in a professional services firm. The plan was implemented in response to a decreasing trend in productivity and a desire for a formal incentive compensation plan. Performance of manager and senior manager accountants were analyzed across two departments over a five year period. A definitive account of the effects of the intervention is limited by the case-¬study design, but the data does suggest that the performance pay plans used did not adversely affect performances. Design limitations of the plan and future research are also discussed.
Date: May 2007
Creator: McDaniel, Sarah Curran
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
System: The UNT Digital Library
Assessment of Sediment Runoff from Natural Gas Well Development Sites. (open access)

Assessment of Sediment Runoff from Natural Gas Well Development Sites.

Storm water sediment runoff from disturbed landscapes has the potential to impair aquatic environments. Small construction sites of 1-5 acres in the United States are currently regulated by the United States Environmental Protection Agency to minimize storm water runoff damages to the environment. Gas well construction sites are similar to other construction sites in how the landscape is altered, but are not similarly regulated. This study identified sediment runoff from gas well development sites by collecting it in traps and weirs, and by measuring sediment debris lobes. Sediment primarily consisted of silt and clay sized particles. Sediments from two gas well sites formed five debris lobes that ranged in size from 325 to 3,290 square feet. Sediment loadings estimated from the debris lobes averaged 57.1 tons per year/acre. Future studies should focus on further quantification of sediment movement off of gas well sites and identify effective erosion control methods.
Date: May 2007
Creator: Havens, David Loran
System: The UNT Digital Library
Bacterial Challenge in Lumbricus Terrestris: A Terrestrial Invertebrate Immunotoxicity Model. (open access)

Bacterial Challenge in Lumbricus Terrestris: A Terrestrial Invertebrate Immunotoxicity Model.

A bacterial challenge assay was developed utilizing the earthworm, Lumbricus terrestris, in order to assess potential immunotoxic effects from exposure to specific polychlorinated biphenyl congeners. Earthworms were inoculated with Aeromonous hydrophila, establishing a 10-day LD50. In vitro assays for effects of PCBs on phagocytosis agreed with mammalian studies, demonstrating potent suppression of phagocytosis by the non-coplanar PCB congener 138 and no suppression by the coplanar congener 126. However, when the effects of the two PCB congeners were evaluated for suppression of resistance to a whole animal infection challenge assay, coplanar PCB 126 decreased the ability of L. terrestris to withstand infection while non-coplanar PCB 138 did not.
Date: May 2007
Creator: McDonald, Jennifer C.
System: The UNT Digital Library
Bridging the Gap: Finding a Valkyrie in a Riddle (open access)

Bridging the Gap: Finding a Valkyrie in a Riddle

While many riddles exist in the Anglo-Saxon Exeter Book containing female characters, both as actual human females and personified objects and aspects of nature, few scholars have discussed how the anthropomorphized “females” of the riddles challenge and broaden more conventional portrayals of what it meant to be “female” in Anglo-Saxon literature. True understanding of these riddles, however, comes only with this broader view of female, a view including a mixture of ferocity and nobility of purpose and character very reminiscent of the valkyrie (OE wælcyrige), a figure mentioned only slightly in Anglo-Saxon literature, but one who deserves more prominence, particularly when evaluating the riddles of the Exeter Book and two poems textually close to the riddles, The Wife's Lament and Wulf and Eadwacer, the only two poems with a female voice in the entire Old English corpus. Riddles represent culture from a unique angle. Because of their heavy dependence upon metaphor as a vehicle or disguise for the true subject of the riddle, the poet must employ a metaphor with similar characteristics to the true riddle subject, or the tenor of the riddle. As the riddle progresses, similarities between the vehicle and the tenor are listed for the reader. Within …
Date: May 2007
Creator: Culver, Jennifer
System: The UNT Digital Library
Children of Incarcerated Parents: An Application of the Stress Process Model. (open access)

Children of Incarcerated Parents: An Application of the Stress Process Model.

The purpose of this qualitative interview study is to examine the lives and experiences children of incarcerated parents from a theoretical perspective through an application of the social stress process. Previous research on children of incarcerated parents has neglected to add a theoretical component to their research, which is the intention of this research. The results will be organized around the theoretical domains of the stress process applied to findings from the analysis of eleven qualitative interviews of mothers and/or caregivers of youth(s) of an incarcerated parent. Guided by analytic induction, the themes that emerged from the transcripts were applied to the theoretical propositions of the social stress process: stressors, mediators, and manifestations. Stressors experienced by children of incarcerated parents include: the incarceration of a parent, financial difficulties, and residential instability. Stress mediators include: coping mechanisms and the importance of maintaining familial ties during parental incarceration. The manifestations or outcomes include: internalizing and externalizing behaviors.
Date: May 2007
Creator: Jarvis, Ashley
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
System: The UNT Digital Library
CMOS Active Pixel Sensors for Digital Cameras: Current State-of-the-Art (open access)

CMOS Active Pixel Sensors for Digital Cameras: Current State-of-the-Art

Image sensors play a vital role in many image sensing and capture applications. Among the various types of image sensors, complementary metal oxide semiconductor (CMOS) based active pixel sensors (APS), which are characterized by reduced pixel size, give fast readouts and reduced noise. APS are used in many applications such as mobile cameras, digital cameras, Webcams, and many consumer, commercial and scientific applications. With these developments and applications, CMOS APS designs are challenging the old and mature technology of charged couple device (CCD) sensors. With the continuous improvements of APS architecture, pixel designs, along with the development of nanometer CMOS fabrications technologies, APS are optimized for optical sensing. In addition, APS offers very low-power and low-voltage operations and is suitable for monolithic integration, thus allowing manufacturers to integrate more functionality on the array and building low-cost camera-on-a-chip. In this thesis, I explore the current state-of-the-art of CMOS APS by examining various types of APS. I show design and simulation results of one of the most commonly used APS in consumer applications, i.e. photodiode based APS. We also present an approach for technology scaling of the devices in photodiode APS to present CMOS technologies. Finally, I present the most modern CMOS …
Date: May 2007
Creator: Palakodety, Atmaram
System: The UNT Digital Library
Comparison of Evangelical Christian Children's God-Concepts and Logical Thinking Ability. (open access)

Comparison of Evangelical Christian Children's God-Concepts and Logical Thinking Ability.

God-concepts of 24 third to sixth grade evangelical Christian children were compared with the children‘s logical thinking abilities in a mixed-method study. Measurements included the Children‘s Interview and the Group Assessment of Logical Thinking (GALT). God-concepts among the children were Biblical, comforter, communicates, creator, empowering, protector, provider, purposeful, human characteristics, lives in heaven, male, counselor, God is Jesus, all-knowing, loving, perfect, powerful, real, and parental. The majority of concrete thinkers conceptualized God as a gracious guide. The majority of transitional thinkers viewed God also as a gracious guide as well as a distant divinity. Implications were given for religious educators to develop a model for age-appropriate instruction and curriculum and to equip parents to promote spiritual development with children at home.
Date: May 2007
Creator: Penick, Starrla
System: The UNT Digital Library
A Comparison of the Effects of Errorful and Errorless Teaching Methods on the Acquisition, Generalization, and Retention of Letter Sound Discriminations in Young Children. (open access)

A Comparison of the Effects of Errorful and Errorless Teaching Methods on the Acquisition, Generalization, and Retention of Letter Sound Discriminations in Young Children.

The present study compared the effects of an errorless stimulus shaping procedure to an errorful fluency based procedure for teaching difficult letter sound discriminations using a counterbalanced multielement experimental design. For 2 participants, letters fsteai were taught using the errorless procedure and letters bpdvou were taught using the errorful procedure. For the other 2 participants the conditions were reversed. All participants had considerably fewer errors and fewer trials to criterion with the errorless than with the errorful procedure. Tests of retention and generalization indicate that the errorful procedure generalized and was retained at a higher frequency than the errorless procedure. For 3 participants preference for the errorless procedure over the errorful procedure was demonstrated; whereas, the fourth participant demonstrated preference for the errorful procedure.
Date: May 2007
Creator: Doucette, Jessica
System: The UNT Digital Library
Conditional Discrimination and Stimulus Equivalence: Effects of Suppressing Derived Symmetrical Responses on the Emergence of Transitivity. (open access)

Conditional Discrimination and Stimulus Equivalence: Effects of Suppressing Derived Symmetrical Responses on the Emergence of Transitivity.

Symmetry suppression was conducted for five subjects who demonstrated a tendency to derive equivalence relations based on conditional discrimination training in a match-to-sample procedure. Symmetry suppression was applied in three consecutive sessions in which symmetrical responses were suppressed for one stimulus class in the first condition, two stimulus classes in the second condition, and all three stimulus classes in the final condition. Symmetry suppression slowed the emergence of transitivity for two subjects and prevented it for the other three. Results indicated that unplanned features of stimulus configurations emerged as discriminative variables that controlled selection responses and altered the function of consequent stimuli. Disruption of cognitive development by conflicting contingencies in natural learning environments is discussed.
Date: May 2007
Creator: Jones, Aaron A.
System: The UNT Digital Library
Correlates of Recidivism: A Study Examining the Differences Between First Time Felony Probationers and Recidivist Felony Probation Offenders (open access)

Correlates of Recidivism: A Study Examining the Differences Between First Time Felony Probationers and Recidivist Felony Probation Offenders

The purpose of this study is to explore the differences and characteristics between first time felony probationer and recidivist felony probation offender. The importance of said studies grows significantly, given current trends of sentencing offenders to probation. Using archived data on random sample of felony offenders in 2000 and based on information acquired and maintained by the Denton County Community Supervision and Corrections Department (CSCD), the study consists of 40 first time felony offenders and 40 recidivist felony offender placed on probation during the year 2000. The method consists of a longitudinal comparison model. To examine the research question, descriptive statistics are used to compare basic demographics. Then, in order to answer the research question bi-variate significant tests, Chi-square and Independent Sample T-tests were employed when appropriate. Results indicate differences between first time felony probation offenders and recidivist felony probationers.
Date: May 2007
Creator: Lynton, Eddy
System: The UNT Digital Library
Criminal Investigations: The Impact of Patrol Officers on Solving Crime (open access)

Criminal Investigations: The Impact of Patrol Officers on Solving Crime

This two-part study of the criminal investigation process first evaluated the frequency with which patrol officers solve cases assigned to the investigations division and then examined how detectives spent their time, both on case assignments and on other activity not related to current case assignment. Cases assigned to the investigations division for follow up were examined to determine how often a case was cleared by the patrol officer. The detective's time was then evaluated in order to determine how much time detectives spent on investigative tasks and other activities. This study confirms that the patrol officer should be given more time to conduct preliminary investigations for specific cases, and that tasks performed by detectives could be shifted to other personnel in the department. Both actions should serve to positively impact case clearance rates.
Date: May 2007
Creator: Womack, Charissa L.
System: The UNT Digital Library
Culture and Mental Health Help-Seeking Attitudes in Mexico. (open access)

Culture and Mental Health Help-Seeking Attitudes in Mexico.

This study was designed to investigate 1) the cultural factors involved with Mexican citizens' attitudes toward seeking professional psychological help and 2) Mexican citizens' explanatory models of mental distress. Questionnaire data from 110 Mexican college students indicate that those who report a higher tolerance for stigma report lower endorsement of both the construct of personalismo and the machismo. Respondents who reported more interpersonal openness also reported a lower endorsement of the machismo construct. Participants from a large city reported significantly more stigma tolerance than those from a small city. Regression analyses reveal machismo as a significant predictor of stigma tolerance. Qualitative data was collected to provide additional in-depth information. Study results could be used to provide culturally appropriate mental health services.
Date: May 2007
Creator: Gomez, Steven David
System: The UNT Digital Library
Determining Properties of Synaptic Structure in a Neural Network through Spike Train Analysis (open access)

Determining Properties of Synaptic Structure in a Neural Network through Spike Train Analysis

A "complex" system typically has a relatively large number of dynamically interacting components and tends to exhibit emergent behavior that cannot be explained by analyzing each component separately. A biological neural network is one example of such a system. A multi-agent model of such a network is developed to study the relationships between a network's structure and its spike train output. Using this model, inferences are made about the synaptic structure of networks through cluster analysis of spike train summary statistics A complexity measure for the network structure is also presented which has a one-to-one correspondence with the standard time series complexity measure sample entropy.
Date: May 2007
Creator: Brooks, Evan
System: The UNT Digital Library
Distances (open access)

Distances

I provide in my preface a brief account of my development as a creative writer. Through this development I draw an analogy to the evolution of modern science by stating that my need for personal clarity is analogous to the charge for empirical clarity of modern science. Furthermore, I contrast the objectivism of modern science to the subjectivism of creative writing. The four short stories in my thesis range from a semi-autobiographical story, to two short stories that stem out further and further from the subjective origin of the first story. The story of greatest distance is “Fireflies,” which is not semi-autobiographical, but pure fiction. The final short story returns to the subjective origin of the first. The drive of Distances is thereby to create a sort parabola: a subjective, semi-autobiographical origin, to an objective, purely fictional crest, then a return to that subjective, semi-autobiographical origin. The entire collection is a holistic, ultimately subjective, and therefore personal experience; yet, through the use certain tropes,metaphors others can relate to, the stories are paradoxically sharable.
Date: May 2007
Creator: Esteves, Jason
System: The UNT Digital Library
Documentary Film: Accidental Shakespeare (open access)

Documentary Film: Accidental Shakespeare

According to the American Heritage College Dictionary, the word “community” derives from the Latin roots: communitas and communis meaning “fellowship” and “common,” respectively. The word “amateur” derives from the Latin roots: amator meaning “lover.” A community of amateurs, who love to put on plays, exists within the Denton Community Theatre. Their first attempt at classical theatre was the January 2006 production of Romeo and Juliet, directed by Brad Speck. The film follows two actors (through observational shooting) - Kevin Wickersham, a waiter who is trying theatre for the first time, and Jeffrey Johnson, a theatre college student trying Shakespeare for the first time - as they relate to a process and community that is new to them.
Date: May 2007
Creator: Petty, Laurel Ann
System: The UNT Digital Library
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.
System: The UNT Digital Library
The Effects of Combining Positive and Negative Reinforcement During Training. (open access)

The Effects of Combining Positive and Negative Reinforcement During Training.

The purpose of this experiment was to compare the effects of combining negative reinforcement and positive reinforcement during teaching with the effects of using positive reinforcement alone. A behavior was trained under two stimulus conditions and procedures. One method involved presenting the cue ven and reinforcing successive approximations to the target behavior. The other method involved presenting the cue punir, physically prompting the target behavior by pulling the leash, and delivering a reinforcer. Three other behaviors were trained using the two cues contingent on their occurrence. The results suggest that stimuli associated with both a positive reinforcer and an aversive stimulus produce a different dynamic than a situation that uses positive reinforcement or punishment alone.
Date: May 2007
Creator: Murrey, Nicole A.
System: The UNT Digital Library