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Bias and Precision of the Squared Canonical Correlation Coefficient under Nonnormal Data Conditions
This dissertation: (a) investigated the degree to which the squared canonical correlation coefficient is biased in multivariate nonnormal distributions and (b) identified formulae that adjust the squared canonical correlation coefficient (Rc2) such that it most closely approximates the true population effect under normal and nonnormal data conditions. Five conditions were manipulated in a fully-crossed design to determine the degree of bias associated with Rc2: distribution shape, variable sets, sample size to variable ratios, and within- and between-set correlations. Very few of the condition combinations produced acceptable amounts of bias in Rc2, but those that did were all found with first function results. The sample size to variable ratio (n:v)was determined to have the greatest impact on the bias associated with the Rc2 for the first, second, and third functions. The variable set condition also affected the accuracy of Rc2, but for the second and third functions only. The kurtosis levels of the marginal distributions (b2), and the between- and within-set correlations demonstrated little or no impact on the bias associated with Rc2. Therefore, it is recommended that researchers use n:v ratios of at least 10:1 in canonical analyses, although greater n:v ratios have the potential to produce even less bias. Furthermore,because it was determined that b2 did not impact the accuracy of Rc2, one can be somewhat confident that, with marginal distributions possessing homogenous kurtosis levels ranging anywhere from -1 to 8, Rc2 will likely be as accurate as that resulting from a normal distribution. Because the majority of Rc2 estimates were extremely biased, it is recommended that all Rc2 effects, regardless of which function from which they result, be adjusted using an appropriate adjustment formula. If no rationale exists for the use of another formula, the Rozeboom-2 would likely be a safe choice given that it produced the greatest number of unbiased Rc2 estimates for the greatest number of condition combinations in this study. digital.library.unt.edu/ark:/67531/metadc5361/
A Study of the Duties of the Deans of Women in the Seven State Teachers Colleges of Texas
The problem undertaken is a study of the duties of the deans of women in the seven state teachers colleges of Texas, their relationship to other members of the faculty, and special problems with which they are confronted. The study also includes a discussion of routine office duties, dormitory duties, public relations work, academic teaching, social duties, and the main professional satisfactions of the position. digital.library.unt.edu/ark:/67531/metadc53710/
Gender differences in a prototypical analysis of psychopathy.
Psychopathy research has focused primarily on characteristics of male offenders. With little empirical knowledge on psychopathy in women, gender differences within psychopathy are not well understood. To gain a better understanding of these differences, the current study used prototypical analysis to compare ratings of 242 forensic experts when considering their most representative case of male or female psychopathy. The present study investigated gender differences for psychopathic traits and Cluster B personality disorder criteria. Most aspects of psychopathy were less prototypical of female psychopaths than males. In particular, the antisocial behavior facet does not appear to apply to males and females equally. The distinction between Cluster B disorders and psychopathy was more ambiguous in females than males; however, the affective deficits facet differentiated psychopathy from Cluster B disorders across genders. Current research also raises the question of potential diagnostic gender bias in the assessment of psychopathy. digital.library.unt.edu/ark:/67531/metadc5371/
Exploring the Private Music Studio: Problems Faced by Teachers in Attempting to Quantify the Success of Teaching Theory in Private Lessons through One Method as Opposed to Another
I present strategies and methods for teaching fundamentals of music theory in the context of the private music studio through a variety of techniques and research. Beginning with a background in educational psychology, examples of behaviorist and cognitive teaching models are presented, and how each applies to teaching music is explained. Two detailed examples of actual lessons are presented, coupled with musical examples, to describe both the process and the concepts that can be presented. A qualitative experiment based upon the learning styles of three music students and the effect of different teaching styles when teaching the same concept is presented and discussed in detail. digital.library.unt.edu/ark:/67531/metadc5356/
Politics and Militarism in Japan
This study is a treatment of the conflicts between politics and militarism in Japan from the promulgation of the Constitution in 1889 to December 7, 1941, in four major divisions: (1) organization of the government; (2) the Elder Statesmen in power, 1889-1918; (3) the party politicians in power, 1918-1932; and (4) the militarists in power, 1932-1941. digital.library.unt.edu/ark:/67531/metadc53567/
Adolescent Insomnia as a Predictor of Early Adulthood Outcomes
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Recent research found insomnia is a risk factor for psychiatric disorders in adults. To see if the same would be true in adolescents, the current study re-analyzed data from a national longitudinal study collected by ADDHealth that evaluated health behaviors in 4552 adolescents (mean age 14.9 years [SD 1.7]) at baseline and again 7-8 years later (n = 3489) during young adulthood. Insomnia was reported by 9.2% of the adolescents. Cross-sectionally, adolescent insomnia was associated with alcohol, cannabis, non-cannabis drugs, and tobacco use, and depression after controlling for gender and ethnicity. Prospectively, adolescent insomnia was a significant risk factor for depression diagnosis, suicidal ideation, and the use of depression and stress prescription medications in young adulthood after controlling for gender, ethnicity, and significant baseline variable. In addition, a trend was noted for suicidal attempts. digital.library.unt.edu/ark:/67531/metadc5399/
Construction Applications, Practices, and Techniques of Natural Trumpets: A Comparative Analysis of Baroque and Modern Era Natural Trumpet Construction Methods
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This work discusses in detail the history of, and processes associated with the construction of baroque era trumpets then and now. The work addresses metallurgy, tools, construction methods, and playing characteristics of instruments built with old techniques and modern techniques. digital.library.unt.edu/ark:/67531/metadc5395/
An Analysis of Objectives, Methods, and Materials in Fourth Grade Social Studies as Found in Five Courses of Study
The purpose of this study is to examine courses of study for social studies in the fourth grade, and after analyzing the objectives, methods, and the materials of each, to decide whether they meet the criteria prescribed in educational literature. digital.library.unt.edu/ark:/67531/metadc53463/
Prince Hall Freemasonry: The other invisible institution of the black community.
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The black church and Prince Hall Freemasonry both played important roles in the black experience in America. Freemasonry and the black church; one secular, the other spiritual, played equally important, interrelated roles in the way the black community addressed social, political, and economic problems in the eighteenth and nineteenth centuries. digital.library.unt.edu/ark:/67531/metadc5325/
Thermodynamics of the Abraham General Solvation Model: Solubility and Partition Aspects
Experimental mole fraction solubilities of several carboxylic acids (2-methoxybenzoic acid, 4-methoxybenzoic acid, 4-nitrobenzoic acid, 4-chloro-3-nitrobenzoic acid, 2-chloro-5-nitrobenzoic acid,2-methylbenzoic acid and ibuprofen) and 9-fluorenone, thianthrene and xanthene were measured in a wide range of solvents of varying polarity and hydrogen-bonding characteristics. Results of these measurements were used to calculate gas-to-organic solvent and water-to-organic solvent solubility ratios, which were then substituted into known Abraham process partitioning correlations. The molecular solute descriptors that were obtained as the result of these computations described the measured solubility data to within an average absolute deviation of 0.2 log units. The calculated solute descriptors also enable one to estimate many chemically, biologically and pharmaceutically important properties for the ten solutes studied using published mathematical correlations. digital.library.unt.edu/ark:/67531/metadc5342/
Developing a Reading Readiness Program in Douglas School, Tyler, Texas
The purpose of this study is to develop a readiness program which will be an aid in eliminating many failures in reading and to help the children be happy while learning to read. digital.library.unt.edu/ark:/67531/metadc53427/
A Study of the Effect of Group Guidance Classes on the Attitudes and Personal Adjustments of Sophomore High School Girls
The purpose of this study is (1) to develop criteria by statistical methods which will show the extent of gain in personality development through a specific guidance program, and (2) to show by comparison the differences in the scores of instructed groups and those of uninstructed groups. digital.library.unt.edu/ark:/67531/metadc53426/
Evaluation of City of Denton Sub-Watershed by Benthic Macroinvertebrate Field Experimental Approach
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In this study, two different field experiments were designed to assess the relative influence of urbanization on benthic communities. During spring and summer, four urban and one reference sites from Denton County, Texas were selected for benthic macroinvertebrate evaluation. Statistically significant differences in colonized benthic macroinvertebrate taxa on artificial substrates were observed among the four urban sites and the reference site. Oligochaetes and chironomids were the dominant taxa at all sites. Identification of chironomid larvae at the subfamily and genus level to detect differences between sites had higher statistical power than the evaluation based on total chironomids. At the reference site, Caenis, Cladotanytarsus, Orthocladius, and Ceratopogonidae were the dominant taxa, while the urban sites were dominated by Dero, Physella, Ancylidae, Chironomus, Dicrotendipes, Glyptotendipes, Polypedilum, Pseudochironomus, Stenochironomus, and Tanytarsus. These differences may have been dependent upon differences in hydrologic regime and water quality between sites. Significant differences (ANOVA, p < 0.01) in water quality parameters (alkalinity, hardness, nitrates, phosphates, chlorides, sulfates, calcium, magnesium, potassium, and triazine) were found among water samples collected from the reference and urban sites. During the transfer period, most of the Ephemeroptera and Trichoptera taxa and a few other taxa disappeared from artificial substrates that were colonized at the reference site and then moved to the urban sites. Also, local abundant taxa from the urban site significantly (t test, p < 0.05) increased in number on the transferred artificial substrates. Seasonal differences in colonization patterns were also observed between the spring and summer experimental periods, which indicate that temporal variation is equally important, as is the anthropogenic effect in benthic community evaluation. Field survival and growth experiments using Erpetogomphus designatus larvae were designed to detect differences between evaluated sites. Larvae were collected from the reference site, measured in the laboratory, and exposed at the urban sites for six weeks in using specially designed cages. The exposed larvae demonstrated a higher mortality rate at the urban sites compared to the reference site. digital.library.unt.edu/ark:/67531/metadc5314/
Germanic Women: Mundium and Property, 400-1000
Abstract Many historians would like to discover a time of relative freedom, security and independence for women of the past. The Germanic era, from 400-1000 AD, was a time of stability, and security due to limitations the law placed upon the mundwald and the legal ability of women to possess property. The system of compensations that the Germans initiated in an effort to stop the blood feuds between Germanic families, served as a deterrent to men that might physically or sexually abuse women. The majority of the sources used in this work were the Germanic Codes generally dated from 498-1024 AD. Ancient Roman and Germanic sources provide background information about the individual tribes. Secondary sources provide a contrast to the ideas of this thesis, and information. digital.library.unt.edu/ark:/67531/metadc5378/
VLSI Architecture and FPGA Prototyping of a Secure Digital Camera for Biometric Application
This thesis presents a secure digital camera (SDC) that inserts biometric data into images found in forms of identification such as the newly proposed electronic passport. However, putting biometric data in passports makes the data vulnerable for theft, causing privacy related issues. An effective solution to combating unauthorized access such as skimming (obtaining data from the passport's owner who did not willingly submit the data) or eavesdropping (intercepting information as it moves from the chip to the reader) could be judicious use of watermarking and encryption at the source end of the biometric process in hardware like digital camera or scanners etc. To address such issues, a novel approach and its architecture in the framework of a digital camera, conceptualized as an SDC is presented. The SDC inserts biometric data into passport image with the aid of watermarking and encryption processes. The VLSI (very large scale integration) architecture of the functional units of the SDC such as watermarking and encryption unit is presented. The result of the hardware implementation of Rijndael advanced encryption standard (AES) and a discrete cosine transform (DCT) based visible and invisible watermarking algorithm is presented. The prototype chip can carry out simultaneous encryption and watermarking, which to our knowledge is the first of its kind. The encryption unit has a throughput of 500 Mbit/s and the visible and invisible watermarking unit has a max frequency of 96.31 MHz and 256 MHz respectively. digital.library.unt.edu/ark:/67531/metadc5393/
Electrochemical Study of Under-Potential Deposition Processes on Transition Metal Surfaces
Copper under-potential deposition (UPD) on iridium was studied due to important implications it presents to the semiconductor industry. Copper UPD allows controlled superfilling on sub-micrometer trenches; iridium has characteristics to prevent copper interconnect penetration into the surrounding dielectric. Copper UPD is not favored on iridium oxides but data shows copper over-potential deposition when lower oxidation state Ir oxide is formed. Effect of anions in solution on silver UPD at platinum (Pt) electrodes was studied with the electrochemical quartz crystal microbalance. Silver UPD forms about one monolayer in the three different electrolytes employed. When phosphoric acid is used, silver oxide growth is identified due to presence of low coverage hydrous oxide species at potentials prior to the monolayer oxide region oxide region. digital.library.unt.edu/ark:/67531/metadc5372/
The Undue Burden Standard: The Effects of Planned Parenthood v. Casey (1992) on State Abortion Laws
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This thesis examines the effects of the change from strict scrutiny to the undue burden standard in Planned Parenthood v. Casey (1992). A history of abortion in the United States and the various ways in which government regulates it is explored. Particular attention is focused on the role of the federal judiciary in abortion regulation. Theories of judicial decision making are discussed as means to understand the outcome of cases. Several models are tested to determine which, if any, model explains judicial decision making. The effect of the change in standard, as well as an alternate precedent, are examined. digital.library.unt.edu/ark:/67531/metadc5326/
An Analysis of the Possible Need of an Aircraft Training Program in Fort Worth Vocational Education Program
The purpose of this study is to make an analysis of the extent of the airplane industry in the immediate area of Fort Worth, Texas, to determine the need, if any, of adding a course in Airplane Industry to the curriculum of the Technical High School of Fort Worth, Texas. digital.library.unt.edu/ark:/67531/metadc53621/
Resource Management in Wireless Networks
A local call admission control (CAC) algorithm for third generation wireless networks was designed and implemented, which allows for the simulation of network throughput for different spreading factors and various mobility scenarios. A global CAC algorithm is also implemented and used as a benchmark since it is inherently optimized; it yields the best possible performance but has an intensive computational complexity. Optimized local CAC algorithm achieves similar performance as global CAC algorithm at a fraction of the computational cost. Design of a dynamic channel assignment algorithm for IEEE 802.11 wireless systems is also presented. Channels are assigned dynamically depending on the minimal interference generated by the neighboring access points on a reference access point. Analysis of dynamic channel assignment algorithm shows an improvement by a factor of 4 over the default settings of having all access points use the same channel, resulting significantly higher network throughput. digital.library.unt.edu/ark:/67531/metadc5392/
Stressors, Social Support, and Stress Reactions: A Meta-Analysis
This study examined, via a meta-analysis, the relations among stressors, social support, and stress reactions. Unexpectedly, small to medium negative, but robust effect sizes were found for the stressors-social support relation. As expected the stressor-stress reaction relation was positive, and the social support-stress reaction relation was negative. Both relations had small to medium effect sizes that ranged from weak to very robust. The direct effect of social support on the stressor-stress reaction was generally supported, whereas the suppressor and mediating models were not supported. Furthermore, the findings were inconclusive for the moderator effect of social support. Non-interpersonal traumas appear different in the stressor-social support and social support-stress reaction relations compared to other trauma types. These findings have important clinical implications. digital.library.unt.edu/ark:/67531/metadc5349/
A Comparative Study of Intelligence Quotients and Achievement Scores and Marks in Social Studies, Arithmetic, Physical Education, Elementary Science, and Language Arts in the Sixth Grade of Wolflin School, Amarillo
As a sixth grade teacher in Wolfin School, Amarillo, Texas the writer is interested in determining to what extent academic success my be predicted by the use of intelligence tests. digital.library.unt.edu/ark:/67531/metadc53492/
Giving Non-English Speaking Germans and Japanese a Basic Speaking Ability in English Through Using Only English in the Classroom
The problem of this thesis is giving non-English speaking Germans and Japanese a basic speaking ability in English through using only English in the classroom. digital.library.unt.edu/ark:/67531/metadc53491/
The Effect of Consumer Shopping Motivations on Online Auction Behaviors: An Investigation of Searching, Bidding, Purchasing, and Selling
The purposes of the study were to: 1) identify the underlying dimensions of consumer shopping motivations and attitudes toward online auction behaviors; 2) examine the relationships between shopping motivations and online auction behaviors; and 3) examine the relationships between shopping attitudes and online auction behaviors. Students (N = 341) enrolled at the University of North Texas completed self-administered questionnaires measuring shopping motivations, attitudes, online auction behaviors, and demographic characteristics. Using multiple regression analyses to test the hypothesized relationships, shopping motivations and shopping attitudes were significantly related to online auction behaviors. Understanding the relationships is beneficial for companies that seek to retain customers and increase their sales through online auction. digital.library.unt.edu/ark:/67531/metadc5366/
Social Self-Concept and Positive Illusory Bias in Boys and Girls With and Without Attention-Deficit/Hyperactivity Disorder
This study examined differences in social self-concept, as measured by the Self-Perception Profile for Children (SPPC), between boys and girls with and without attention-deficit/hyperactivity disorder (ADHD) while controlling for internalizing symptoms. Ninety-six children between the ages of 8 and 13 participated in the study as part of a larger project. Teacher reports of social competence were collected using the Teacher Rating Scale (TRS). The results indicated ADHD children experienced more peer rejection than control children. ADHD girls appeared to be more susceptible to low social self-concept and competence than control children or ADHD boys. Inattentive symptoms were most predictive of teacher reports of competence. Positive illusory bias was not found to serve a protective function in children regardless of ADHD status. The implications of the current study and directions for future research are presented. digital.library.unt.edu/ark:/67531/metadc5390/
Expropriation of American Oil Interests and its Effect on United States-Mexican Relations since 1938
This thesis discusses the seizure of all foreign owned oil property by the Mexican government in 1938 and the historical events leading up to the seizure. digital.library.unt.edu/ark:/67531/metadc53636/
Documentary Film: Access Denied
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Sculptor Eric McGehearty incorporates dyslexia, a learning disability, into his artwork to express his challenges with his limited ability to recognize and understand the written word. The film Access Denied focuses on Eric and his disability. Recognized in 1896, dyslexia has been studied and researched by scientists and educators. New assistive technology is now available to aid dyslexics in reading and writing. Specialized schools provide techniques to improve student learning. However, some options are not readily available to the general public; therefore, information about how to deal with the disability is not easily accessed. The aims of this documentary are to raise awareness of available resources to assist with learning as well as to demonstrate a relationship between art and dyslexia. digital.library.unt.edu/ark:/67531/metadc5329/
Selecting Optimal Residential Locations Using Fuzzy GIS Modeling
Integrating decision analytical techniques in geographic information systems (GIS) can help remove the two primary obstacles in spatial decision making: inaccessibility to required geographic data and difficulties in synthesizing various criteria. I developed a GIS model to assist people seeking optimal residential locations. Fuzzy set theory was used to codify criteria for each factor used in evaluating residential locations, and weighted linear combination (WLC) was employed to simulate users' preferences in decision making. Three examples were used to demonstrate the applications in the study area. The results from the examples were analyzed. The model and the ArcGIS Extension can be used in other geographic areas for residential location selection, or in other applications of spatial decision making. digital.library.unt.edu/ark:/67531/metadc5396/
Group-EDF: A New Approach and an Efficient Non-Preemptive Algorithm for Soft Real-Time Systems
Hard real-time systems in robotics, space and military missions, and control devices are specified with stringent and critical time constraints. On the other hand, soft real-time applications arising from multimedia, telecommunications, Internet web services, and games are specified with more lenient constraints. Real-time systems can also be distinguished in terms of their implementation into preemptive and non-preemptive systems. In preemptive systems, tasks are often preempted by higher priority tasks. Non-preemptive systems are gaining interest for implementing soft-real applications on multithreaded platforms. In this dissertation, I propose a new algorithm that uses a two-level scheduling strategy for scheduling non-preemptive soft real-time tasks. Our goal is to improve the success ratios of the well-known earliest deadline first (EDF) approach when the load on the system is very high and to improve the overall performance in both underloaded and overloaded conditions. Our approach, known as group-EDF (gEDF), is based on dynamic grouping of tasks with deadlines that are very close to each other, and using a shortest job first (SJF) technique to schedule tasks within the group. I believe that grouping tasks dynamically with similar deadlines and utilizing secondary criteria, such as minimizing the total execution time can lead to new and more efficient real-time scheduling algorithms. I present results comparing gEDF with other real-time algorithms including, EDF, best-effort, and guarantee scheme, by using randomly generated tasks with varying execution times, release times, deadlines and tolerances to missing deadlines, under varying workloads. Furthermore, I implemented the gEDF algorithm in the Linux kernel and evaluated gEDF for scheduling real applications. digital.library.unt.edu/ark:/67531/metadc5317/
Design and Optimization of Components in a 45nm CMOS Phase Locked Loop
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A novel scheme of optimizing the individual components of a phase locked loop (PLL) which is used for stable clock generation and synchronization of signals is considered in this work. Verilog-A is used for the high level system design of the main components of the PLL, followed by the individual component wise optimization. The design of experiments (DOE) approach to optimize the analog, 45nm voltage controlled oscillator (VCO) is presented. Also a mixed signal analysis using the analog and digital Verilog behavior of components is studied. Overall a high level system design of a PLL, a systematic optimization of each of its components, and an analog and mixed signal behavioral design approach have been implemented using cadence custom IC design tools. digital.library.unt.edu/ark:/67531/metadc5397/
The Effect of Medium Constituents upon Pigment Production by Four Species of Bacteria
This investigation had for its aim the determination of the effects of various materials, added to the basic culture medium, upon pigment production of the four chromogens Staphylococcus aureus, Sarcina lutea, Serratia marcescens, and Rhodococcus cinnabaris. digital.library.unt.edu/ark:/67531/metadc53496/
Nanoscale Materials Applications: Thermoelectrical, Biological, and Optical Applications with Nanomanipulation Technology
In a sub-wavelength scale, even approaching to the atomic scale, nanoscale physics shows various novel phenomena. Since it has been named, nanoscience and nanotechnology has been employed to explore and exploit this small scale world. For example, with various functionalized features, nanowire (NW) has been making its leading position in the researches of physics, chemistry, biology, and engineering as a miniaturized building block. Its individual characteristic shows superior and unique features compared with its bulk counterpart. As one part of these research efforts and progresses, and with a part of the fulfillment of degree study, novel methodologies and device structures in nanoscale were devised and developed to show the abilities of high performing thermoelectrical, biological, and optical applications. A single β-SiC NW was characterized for its thermoelectric properties (thermal conductivity, Seebeck coefficient, and figure of merit) to compare with its bulk counterpart. The combined structure of Ag NW and ND was made to exhibit its ability of clear imaging of a fluorescent cell. And a plasmonic nanosture of silver (Ag) nanodot array and a β-SiC NW was fabricated to show a high efficient light harvesting device that allows us to make a better efficient solar cell. Novel nanomanipulation techniques were developed and employed in order to fabricate all of these measurement platforms. Additionally, one of these methodological approaches was used to successfully isolate a few layer graphene. digital.library.unt.edu/ark:/67531/metadc84238/
An Investigation of the Relationship between HIV and Prison Facilities in Texas: The Geographic Variation and Vulnerable Neighborhood Characteristics
Previous research suggests that prisons may be fueling the spread of HIV infection in the general population. In 2005, the HIV rate was more than 2.5 times higher in US prison populations. Environmental factors in prisons such as illicit drug use and unprotected sexual activities can be conducive for HIV transmission. Because the vast majority of prison inmates are incarcerated for less than three years, transmission of HIV between prison inmates and members of the general population may occur at a high rate. The environment in which an individual lives and the entities that comprise it affect the health of that person. Thus the location of prisons within communities, as well as socio-demographic characteristics may influence the geography of HIV infection. HIV surveillance data, obtained from the Texas Department of State Health Services, were used to investigate the relationship between the location of prison units in Texas and HIV infection rates in the surrounding zip codes. The results suggest that HIV prevalence rates are higher among geographic areas in close proximity to a prison unit. With continued behavioral risks and low treatment adherence rates among individuals infected with HIV, there is a possibility of increased HIV prevalence. Vulnerable places, locations with higher HIV prevalence, should be targeted for resource allocation and HIV prevention and care service. This study illustrates the importance of spatial analysis of places vulnerable to increased HIV prevalence in creating more effective public health prevention strategies and interventions. digital.library.unt.edu/ark:/67531/metadc84234/
Personnel Preparation in Special Education: An Exploration of Autism Spectrum Disorders Programmatic Changes in Institutions of Higher Education Teacher Training Programs
Programmatic change related to autism spectrum disorders (ASD) training in special education teacher education programs across the U.S. and institutional variables that influenced change were examined. Variables included institutions’ current coverage of autism content in coursework and institution enrollment. One faculty member from each identified institution was invited to participate in the study. Data were collected from 136 special education faculty using an exploratory survey instrument, the National Survey on ASD Preparation in Undergraduate Special Education Teacher Training Programs (NSAP). This study was designed around themes which emerged from empirical and pragmatic research findings conceptualizing prevalent issues in personnel preparation for ASD including critical knowledge and skills needed by teachers to effectively serve students with ASD. Results indicated a significant number of programmatic changes (66%) remain to be implemented in undergraduate special education programs at institutions participating in the study. digital.library.unt.edu/ark:/67531/metadc84239/
Intimate Partner Violence Among Female Undergraduates: The Role of Language in the Development of Posttraumatic Stress
Research findings across a variety of samples (e.g., clinical, shelter, hospital) estimate that 31% to 84% of women who have experienced intimate partner violence (IPV) exhibit symptoms of posttraumatic stress disorder (PTSD). The current study sought to further investigate the abuse-trauma link by examining the relationship between lifetime trauma exposure, type of abuse (i.e., physical, psychological), and perspective-taking abilities (i.e., here-there, now-then). The role of experiential avoidance in the development of PTSD symptoms was also examined. Results indicated that lifetime trauma exposure (β = .31) and psychological abuse (β = .34) were significant predictors of PTSD symptomatology. Additionally, analyses revealed that experiential avoidance (β = .65) was a significant predictor of PTSD symptoms that partially mediated the relationship between IPV and PTSD symptomatology. Implications of findings are discussed as well as future suggestions for research examining type of IPV and PTSD. digital.library.unt.edu/ark:/67531/metadc84236/
Tests of a New Model of Paclitaxel-Induced Neuropathy and the Effects of Paclitaxel on the Dorsal Root Ganglia
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This study examined a new model of paclitaxel-induced neuropathic pain and the effects of systemic paclitaxel on the gap junction protein subunit Cx43 and potassium inwardly-rectifying channel Kir4.1 within the dorsal root ganglia. In the new neuropathic pain model, subplantar injections of paclitaxel resulted in decreased conduction velocities of A-beta fiber compound action potentials in the sciatic (5.9%) and tibial nerves (6.8%) as well as in M (10.6%) and H (10.2%) waves. By using repeated recordings it was found that following paclitaxel injection, conduction velocities in the contralateral plantar nerve increased (9.2%). Systemic injections of paclitaxel resulted in reduced Kir4.1 immunolabeling in the dorsal root ganglia compared to vehicle injections. This reduction was observed in total labeling (32.4%) as well as in areas of intense labeling (28.7%). Reductions in overall Cx43 immunolabeling (25%) and area (25%) following systemic paclitaxel injections were not statistically significant. The results of these studies suggest that subplantar injections of paclitaxel can result in reduced peripheral nerve conduction velocities. The results also show that a unilateral neuropathy can result in contralateral changes in conduction velocities. The effects of paclitaxel on reducing Kir4.1 levels suggest that neuropathic pain caused by paclitaxel may share mechanisms in common with other types of neuropathies which show similar changes in Kir4.1 levels. digital.library.unt.edu/ark:/67531/metadc84251/
The Effects of Fines on Cooperation in a Four-Person Prisoner’s Dilemma Game
Cooperation is an important area of investigation for behavior analysis. The prisoner’s dilemma game (PDG) provides a useful scenario for studying cooperation in a behavior analytic paradigm. The PDG can be coupled with the concept of the metacontingency to investigate how various contingency arrangements support and promote cooperation in a group. Players in this experiment participated in a PDG and, in some conditions, were given the ability to fine other players but could not talk. The goal of this experiment was to investigate how players’ ability to fine one another affected the players’ patterns of cooperation, and whether fining itself was affected by the addition of a shared group consequence. The data show that participants cooperated in some conditions, but the fines did not seem to affect players’ rates of cooperation. digital.library.unt.edu/ark:/67531/metadc84257/
Digitally Curious: A Qualitative Case Study of Students’ Demonstrations of Curiosity in a Technology-Rich Learning Environment
Curiosity is an important construct for educators as it is connected with knowledge and higher-order thinking, goal-oriented behavior, motivation, and persistence. It is also negatively correlated with boredom and anxiety. While research documents this strong connection between learning and curiosity, no studies existed exploring curiosity in a technology-rich learning environment. The purpose of this study is to identify and examine whether students demonstrate curiosity in a sixth grade mathematics classroom with technology-integrated learning and if so, how and why. Technology-rich work was designed for students and included in the study to examine students’ demonstrations of curiosity while learning mathematical procedural knowledge, conceptual knowledge and problem solving knowledge. A case study methodology was used with 13 students purposefully selected from a Title I sixth grade class to participate. Data were collected from interviews using a semi-structured interview protocol and triangulated with observations and students’ reflective writings. Interviews were transcribed and coded. A total of 60 codes and four categories were identified. Three themes emerged: 1) digital play; 2) welcome and unwelcome scaffolds; and 3) action is power; power follows ideas. These themes identified ways in which students demonstrated curiosity in the sixth grade mathematics classroom and thus can inform educators. digital.library.unt.edu/ark:/67531/metadc84250/
Beggars, Brides, and Bards: The Political Philosophy of Shakespeare’s The Taming of the Shrew
To do justice to Shakespeare’s comprehensive moral and political thought this paper seeks to discover what we can learn from the political philosophy of his largely neglected comedy, Taming of the Shrew. Not only does this endeavor provide a valuable forgotten link within the critical analyses of the theorists, but it also corrects the various misinterpretations of the play among contemporary critics. I argue that the play surveys various key themes that are rooted in classical political philosophy – such as education, the problems of anger, and the dynamic between nature and convention – and takes into consideration how they apply to modern man. Shakespeare borrows Plato’s idea that eroticism is central to education and explicitly references Ovid’s love books to reexamine our conceptions about one’s formation of character, the proper standards for judging the ideal mate, and the effects of these issues on the stability of the community. I also submit an innovative explanation of the relation between the induction and the main plot. Taken together they exhibit a critique of the role of the poet and his art in modern civil society. digital.library.unt.edu/ark:/67531/metadc84258/
Modeling Transition Metal Chemistry for Catalytic Functionalization of Molecules
The diversity of transition metal complexes allows for a wide range of chemical processes to be mediated by the metal, from catalysis to surface chemistry. Investigations into the structure and electronic configuration of transition metal complexes allow for tuning of desired species by modifications to the ligands and/or metals to achieve more efficient thermodynamics and kinetics for the process of interest. Transition metals, often used in catalysts for a number of important processes, require detailed descriptions of intermediates, transition states and products to fully characterize a reaction mechanism(s) in order to design more active and efficient catalysts. Computational investigations into inorganic catalysts are explored with the aim of understanding the activity of each species and how modifications of supporting ligands, co-ligands and metals vary the interaction along the reaction pathway. Reported results give important insight into the development of the most active complexes in addition to determining the least active complexes to aid experimental development. This report first investigates the mechanisms of two unique transfer reactions: 1) formation of low coordinate nickel-nitrene ((P~P)Ni=NR; P~P = 1,2-bis(dihydrophosphino)-ethane or 1,2-bis(difluoromethylphosphino)-ethane) complexes as catalysts for nitrogen atom transfer and 2) oxidation of a triphosphorus niobium complex, [(η2-P3SnPh3)Nb(OMe)3], for the transfer of the phosphorus synthon, Ph3SnP3. These reactions have utility in the synthesis of nitrogen and phosphorus containing molecules, respectively, and the results presented provide mechanistic insight into the synthesis of the organometallic intermediates. Additionally, a computational approach towards rational catalyst design was performed on the ruthenium based hydroarylation catalyst TpRu(CO)(Ph) [Tp = hydrido-tris(pyrazolyl)borate]. Targeted modifications at the Tp, metal and co-ligand (CO) sites were studied in order to tune the electronics and sterics of the catalyst. Modifications, through computational methods, provided a more cost- and time-efficient way to study the impact of modifications, which provided direct input into attractive synthetic targets. The research described heir in highlights the use of computational chemistry methodologies, specifically DFT, in collaboration with experimental results, for the accurate description of reaction geometries and factors influencing the thermodynamics and kinetics of the systems. Valuable insight is gained by treating inorganic complexes with theoretical methods and additionally provides a fast, cheap way to predict and understand the chemistry of such complex systems. digital.library.unt.edu/ark:/67531/metadc84255/
Managing HIV: Self-Efficacy, Mindfulness, Optimism, and Meaning
The purpose of the current study is to investigate the extent to which mindfulness (observing and describing), dispositional optimism and personal meaning are associated with self-efficacy for managing a chronic disease (SEMCD) among 57 people living with HIV in the DFW Metroplex. Several statistical analyses, including a hierarchical linear regression analysis, were conducted. Results indicate, after controlling for age and gender, the overall model accounted for a significant proportion of the variance (adjusted R2 = .39) in self-efficacy for managing chronic disease, F (6, 50) = 5.80, p < .01. Both subscales of mindfulness were significantly related to self-efficacy. However, observing was negatively, associated with SEMCD (β = -0.44, p < .05), and describing was positively associated with self-efficacy (β = 0.60, p < .01). As a result, incorporating these mindfulness skills into self-efficacy based self-management programs may greatly improve self-management, thus positively influencing psychological and physiological health outcomes that are essential to the health and wellbeing of people living with HIV/AIDS. Future research should investigate methods of manipulating observing and describing, and determine what proficiency in these skills is most beneficial to improve self-efficacy. digital.library.unt.edu/ark:/67531/metadc84252/
Accuracy and Efficiency in Computational Chemistry: The Correlation Consistent Composite Approach
One of the central concerns of computational chemistry is that of efficiency (i.e. the development of methodologies which will yield increased accuracy of prediction without requiring additional computational resources – RAM, disk space, computing time). Though the equations of quantum mechanics are known, the solutions to these equations often require a great deal of computing power. This dissertation primarily concerns the theme of improved computational efficiency (i.e. the achievement of greater accuracy with reduced computational cost). Improvements in the efficiency of computational chemistry are explored first in terms of the correlation consistent composite approach (ccCA). The ccCA methodology was modified and this enhanced ccCA methodology was tested against the diverse G3/05 set of 454 energetic properties. As computational efficiency improves, molecules of increasing size may be studied and this dissertation explored the issues (differential correlation and size extensivity effects) associated with obtaining chemically accurate (within 1 kcal mol-1) enthalpies of formation for hydrocarbon molecules of escalating size. Two applied projects are also described; these projects concerned the theoretical prediction of a novel rare gas compound, FKrOH, and the mechanism of human glutathione synthetase’s (hGS) negative cooperativity. The final work examined the prospect for the parameterization of the modified embedded atom method (MEAM) potential using first principles calculations of dimer and trimer energies of nickel and carbon systems. This method of parameterization holds promise for increasing the accuracy of simulations for bulk properties within the field of materials science. digital.library.unt.edu/ark:/67531/metadc84300/
A Randomized Clinical trial of Cognitive-Behavioral Therapy for Insomnia in a College Student Population
Nearly 10% of college students experience chronic insomnia. Cognitive-behavioral therapy for insomnia (CBTi) is an empirically validated multi-component treatment that has been demonstrated to produce reliable and durable benefits in the general adult population. However, there have been no studies examining the effectiveness of multi-component CBTi in a college student population, even though many studies have examined the efficacy of single treatment modalities. These young adults are different from the general adult population because they are in a unique transitional developmental phase as they are maturing from adolescence into adulthood, they are sleepier than adults, they tend to have irregular sleep schedules, and their living situations are often different from the general adult population. In this study college students with chronic insomnia were randomly assigned to either six sessions of CBTi or a wait list control (WLC) group. All participants completed sleep diaries, sleep measures, and psychosocial measures. The results indicated students who received CBTi showed improvements in sleep efficiency (SE), sleep onset latency (SOL), number of awakenings (NWAK), time awake after sleep onset (WASO), and sleep quality (SQ). They also had decreased insomnia severity (ISI), dysfunctional beliefs about sleep (DBAS), and general fatigue (MFI), as well as increases in global sleep quality (PSQI). digital.library.unt.edu/ark:/67531/metadc84307/
Observed Eye Contact between Selected Students and Teacher in the Music Making Process
High school band members (N=13) and their teacher were observed during six rehearsals of two contrasting band compositions over a six-week period. The contrasting compositions were selected by means of a detailed process between me (the researcher) and the teacher (the conductor). One 60-second excerpt of each composition was selected, during the performance of which, the students were observed. Three video tapings of each composition was done in order to capture occasions when the students would look up from their music. Using a technique adapted from Ekman (1997), the band members and teacher were then interviewed in order to reveal the reasons they recalled for looking up from their music. The results showed that the band members looked up in places where the teacher expected eye contact, that the frequency of eye contact changed little from one rehearsal to the next, and that the frequency of eye contact changed little between the two contrasting compositions. In all cases, the band members were able to recall the reasons for looking up from their music, a fact which led to a detailed analysis about the students' own thoughts while they were engaged in playing as an ensemble. The results are discussed in terms of strategies for teaching practice and implications for future research. digital.library.unt.edu/ark:/67531/metadc5380/
Toward a Post-Structural Monumentality
This study addresses a tension in contemporary studies of public memory between ideology criticism and postmodern critique. Both strategies of reading public memory rely on a representational logic derived from the assumption that the source for comparison of a memory text occurs in a more fundamental text or event. Drawing heavily from Michel Foucault, the study proposes an alternative to a representational reading strategy based on the concepts of regularity, similitude, articulation, and cultural formation. The reading of Vietnam Veterans Memorial and the Galveston County Vietnam Memorial serves as an example of a non-representational regularity enabled by the cultural formation of pastoral power. digital.library.unt.edu/ark:/67531/metadc5346/
Foot and/or Bicycle Patrols in Major Texas Metropolitan Police Departments
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During the last 25 years in law enforcement in the United States, there has been a universal practice of foot and/or bicycle patrols used to accomplish the goal of police patrol enforcement and the philosophy of community policing in metropolitan areas. These tactics of patrol have also been used in police departments in and around the State of Texas. This report is a research project on six major metropolitan police departments in the State of Texas, analyzing their allocation of foot and/or bicycle patrol units within their urban cities. The study assesses their early history in using these two police tactics to address criminal activity and their progression from foot patrol to bicycle patrol. The findings of this research support the proposition that major Texas police departments have adopted the practices and philosophies of other major urban police departments around the US, by using foot and/or bicycle patrols in their cities. There is evidence that major Texas police departments were using foot patrol during the early 1980s in support of community policing and gradually phased out this practice in the early 1990s to adopt the new enforcement tactic of policing on a bicycle. digital.library.unt.edu/ark:/67531/metadc5309/
Characterizations of Continua of Finite Degree
In this thesis, some characterizations of continua of finite degree are given. It turns out that being of finite degree (by formal definition) can be described by saying there exists an equivalent metric in which Hausdorff linear measure of the continuum is finite. I discuss this result in detail. digital.library.unt.edu/ark:/67531/metadc5367/
The twain have met: Self-disclosure in the formation and development of intercultural friendships in the case of Taiwanese versus native English speakers.
Grounded in a social penetration perspective, this exploratory study aspires to examine the impact of self-disclosure on intercultural friendship development between Taiwanese and native English speakers by a section of the following populations: (a) Taiwanese sojourning in the US, (b) native English speakers sojourning in Taiwan, and (c) Taiwanese in Taiwan. This research employed a triangulation of quantitative surveys and qualitative interviews to answer the proposed research questions and hypothesis regarding four dimensions and six topics of self-disclosure. Consistent with the quantitative results, the five themes that emerged from the qualitative analysis indicate both unique challenges in self-disclosing to intercultural friends and a positive association between self-disclosure and cultural adaptation. Additionally, this study highlights the role of self-disclosure in the four identified stages of intercultural friendship development. Finally, findings from this study have implications for the social penetration theory, anxiety/uncertainly management theory, and theory of adaptation in intercultural dyads. digital.library.unt.edu/ark:/67531/metadc5384/
Basic Elements Necessary for Permanent World Peace
The purpose of this study is to make a survey of the efforts that have been made to secure world peace and to present some basic elements necessary in any workable world peace organization. Stress will be placed not on military power or economic difficulties but on the fundamental human relationships of mankind. digital.library.unt.edu/ark:/67531/metadc53535/
To Determine a Sound Source of Public School Revenue in Texas
The purpose of this study is to attempt to determine a sound source of public school revenue in the state of Texas. digital.library.unt.edu/ark:/67531/metadc53674/
The Use of Auditory and Visual Aids in Eighty Public Schools of Texas
The problem of this investigation was two-fold: first, to obtain general information on auditory and visual aids and their apparent values in the schoolroom; and second, to find out to what extent these aids were used in eighty representative schools of Texas during 1945-1946. digital.library.unt.edu/ark:/67531/metadc53679/