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Analysis Of Sequential Barycenter Random Probability Measures via Discrete Constructions

Description: Hill and Monticino (1998) introduced a constructive method for generating random probability measures with a prescribed mean or distribution on the mean. The method involves sequentially generating an array of barycenters that uniquely defines a probability measure. This work analyzes statistical properties of the measures generated by sequential barycenter array constructions. Specifically, this work addresses how changing the base measures of the construction affects the statististics of measures generated by the SBA construction. A relationship between statistics associated with a finite level version of the SBA construction and the full construction is developed. Monte Carlo statistical experiments are used to simulate the effect changing base measures has on the statistics associated with the finite level construction.
Date: December 2002
Creator: Valdes, LeRoy I.

An Annotated Bibliography of Mobile Agents in Networks

Description: The purpose of this thesis is to present a comprehensive colligation of applications of mobile agents in networks, and provide a baseline association of these systems. This work has been motivated by the fact that mobile agent systems have been deemed proficuous alternatives in system applications. Several mobile agent systems have been developed to provide scalable and cogent solutions in network-centric applications. This thesis examines some existing mobile agent systems in core networking areas, in particular, those of network and resource management, routing, and the provision of fault tolerance and security. The inherent features of these systems are discussed with respect to their specific functionalities. The applicability and efficacy of mobile agents are further considered in the specific areas mentioned above. Although an initial foray into a collation of this nature, the goal of this annotated bibliography is to provide a generic referential view of mobile agent systems in network applications.
Date: December 2002
Creator: Sriraman, Sandhya

Approaches to Nature Aesthetics: East Meets West

Description: Nature aesthetics is examined as an approach to environmental ethics. The characteristics of proper nature appreciation show that every landscape can be appreciated impartially in light of the dynamic processes of nature. However, it is often claimed that natural beauty decreases if humans interfere into nature. This claim leads to the separation of human culture and nature, and limits the number of landscapes which can be protected in terms of aesthetic value. As a solution to this separation, a non-dualistic Japanese aesthetics is examined as a basis for the achievement of the coexistence of culture and nature. Ecological interrelationships between human culture and nature are possible by means of an aesthetic consciousness in terms of non-hierarchical attitudes.
Date: December 2002
Creator: Toyoda, Mitsuyo

Assessing the Effect of Inquiry-Based Professional Development on Science Achievement Tests Scores.

Description: This study analyzed student test scores to determine if teacher participation in an inquiry-based professional development was able to make a statistically significant difference in student achievement levels. Test scores for objectives that assessed the critical thinking skills and problem-solving strategies modeled in a science inquiry institute were studied. Inquiry-based experiences are the cornerstones for meeting the science standards for scientific literacy. State mandated assessment tests measure the levels of student achievement and are reported as meeting minimum expectations or showing mastery for specific learning objectives. Students test scores from the Texas Assessment of Academic Skills Test (TAAS) for 8th grade science and the Biology End Of Course (EOC) exams were analyzed using ANCOVA, Chi Square, and Logistic Regression, with the Iowa Test of Basic Skills (ITBS) 7th Grade Science Subtest as covariate. It was hypothesized that the students of Inquiry Institute teachers would have higher scale scores and better rates of mastery on the critical thinking objectives than the students of non-Institute teachers. It was also hypothesized that it would be possible to predict student mastery on the objectives that assessed critical thinking and problem solving based on Institute participation. This quasi-experimental study did not show a statistically significant difference between the two groups. The effects of inquiry-based professional development may not be determined by analyzing the results of the standardized tests currently being used in Texas. Inquiry training may make a difference, but because of factors such as the ceiling effect, insufficient time to implement the program, and test items that are intended to but do not address critical thinking skills, the TAAS and EOC tests may not accurately assess effects of the Inquiry Institute. The results of this study did indicate the best predictor of student mastery for the 8th grade science TAAS and Biology EOC may ...
Date: December 2002
Creator: Dickson, Teresa K.

An Assessment of the Parent Orientation Program at the University of North Texas

Description: Although most institutions offer a parent program option to the orientation program, there has been little formalized research into the quality, planning or programming of parent orientation. There has been very little research into the impact parent orientation has on parents and whether or not they feel that such programs have met their needs, particularly by gender, minority status, educational background, or by geographic distance from the institution. This study seeks to determine the effectiveness of the parent orientation program at the University of North Texas to the parents who participate in this program. The study attempts to measure whether parents feel that they have adequate information about the institution to adequately support their student through the college transition; if parents feel welcomed by the UNT campus community; and if they feel that they have developed resources and institutional contacts that may be useful in the future in assisting their child to have a successful college experience at UNT. The study, conducted in the summer of 2002, had 736 respondents. An instrument developed to determine parent's perceptions of the effectiveness of the parent orientation program consisted of 31 questions using a Likert scale. A t-Test was utilized to analyze the data because it is designed to compare the means of the same variable with two different groups. Generally, all aspects of the parent orientation program were found to be positive by each subgroup. Parents found value in the orientation program and how it prepared them to support their new college student. In all four components studied, women had a stronger feeling than the males. Minority status had no significant impact on the outcomes of orientation according to the participants. Educational background proved not to be a significant factor. Distance parents lived from UNT revealed significant difference in three of the ...
Date: December 2002
Creator: With, Elizabeth

Bandanna, An Opera by Daron Aric Hagen with Libretto by Paul Muldoon, Commissioned by the College Band Directors National Association: The Origins of an Artwork with a Glimpse at its Musical Character Development

Description: All information for this study was obtained by original source documents, interviews with the principal participants and the personal observations of the writer. A complete transcript of interviews with Daron Aric Hagen Michael Haithcockand Robert De Simone are included as appendices. In1961 the College Band Directors National Association (CBDNA) created its commissioning project for the purpose of contracting prominent composers to contribute works of high quality to the growing wind repertoire. Recently, CBDNA commissioned works that sought to collaborate with other disciplines within the artistic community. These collaborative works added new depth to the wind repertoire and helped advance the genre to new levels of prominence. CBDNA commissioned Daron Aric Hagen to write an opera using winds in the pit. He titled the work Bandanna, based on Shakespeare's Othello. Hagen contracted Paul Muldoon to write the libretto. A consortium of 79 member schools contributed to the project. A total of $100,000.00 was paid to the composer. The Director of Bands at Baylor University conducted the premiere performance of Bandanna during the 1999 CBDNA convention on 25 February 1999. Hagen assigned instrumental, thematic and harmonic attributes to each character. There are literally thousands of interactions between these elements that weave a tight pattern of organic unity into the entire work, making it exceptionally rich with symbolism and innuendo. Though still in its infancy, the uniqueness of this work both in the manner in which it came into being and through its artistic merits are fascinating. Only the future will determine whether Bandanna has true longevity or will fade into the background as a historical curiosity.
Date: December 2002
Creator: Powell, Edwin C.

Beyond GNP: Economic Freedom as a Determinant of Basic Human Needs.

Description: Research concerning ‘basic needs' in the Human Rights literature has consistently found a positive and significant relationship between measures of wealth and basic needs provision. This study utilizes a relatively new measure of economic freedom to test hypotheses regarding general macro-economic policy decisions and basic needs outcomes. A pooled dataset of 138 countries over four years is examined using OLS panel regression controlling for both' year' and ‘country,' in a standard basic needs model. Consistent and systematic differences between economic freedom effects in OECD nations and non-OECD nations are revealed. The Economic Freedom Index has both theoretical and empirical advantages over previous measures of wealth and economic freedom, allowing human rights scholars to test specific economic policy decisions as they affect basic needs outcomes.
Date: December 2002
Creator: Juenke, Eric

Cognitive and Perceptual-Motor Indicators of Lateralized vs. Diffuse Brain Damage in Adults.

Description: Among the goals of the neuropsychological assessment are to detect the presence of brain damage, localize which areas of the brain may be dysfunctional and describe subsequent functional impairments. The sensitivity of neuropsychological instruments in carrying out these functions is a question of some debate. The purpose of this study is to determine the utility of lateralizing indicators from the WAIS-III, McCarron Assessment of Neuromuscular Development (MAND) and Haptic Visual Discrimination Test (HVDT), from the McCarron-Dial System Neuropsychological Assessment Battery (MDS), in ascertaining the presence or absence of brain damage as well as location of lesion. The classification accuracies of using performance level indicators from these tests and lateralizing indicators, alone and together, were compared.
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Date: December 2002
Creator: Gregory, Erin Kathleen Taylor

A Common Representation Format for Multimedia Documents

Description: Multimedia documents are composed of multiple file format combinations, such as image and text, image and sound, or image, text and sound. The type of multimedia document determines the form of analysis for knowledge architecture design and retrieval methods. Over the last few decades, theories of text analysis have been proposed and applied effectively. In recent years, theories of image and sound analysis have been proposed to work with text retrieval systems and progressed quickly due in part to rapid progress in computer processing speed. Retrieval of multimedia documents formerly was divided into the categories of image and text, and image and sound. While standard retrieval process begins from text only, methods are developing that allow the retrieval process to be accomplished simultaneously using text and image. Although image processing for feature extraction and text processing for term extractions are well understood, there are no prior methods that can combine these two features into a single data structure. This dissertation will introduce a common representation format for multimedia documents (CRFMD) composed of both images and text. For image and text analysis, two techniques are used: the Lorenz Information Measurement and the Word Code. A new process named Jeong's Transform is demonstrated for extraction of text and image features, combining the two previous measurements to form a single data structure. Finally, this single data measurements to form a single data structure. Finally, this single data structure is analyzed by using multi-dimensional scaling. This allows multimedia objects to be represented on a two-dimensional graph as vectors. The distance between vectors represents the magnitude of the difference between multimedia documents. This study shows that image classification on a given test set is dramatically improved when text features are encoded together with image features. This effect appears to hold true even when the available ...
Date: December 2002
Creator: Jeong, Ki Tai

Comparative biochemistry and genetic analysis of nucleoside hydrolase in Escherichia coli, Pseudomonas aeruginosa, and Pseudomonas fluorescens.

Description: The pyrimidine salvage enzyme, nucleoside hydrolase, is catalyzes the irreversible hydrolysis of nucleosides into the free nucleic acid base and D-ribose. Nucleoside hydrolases have varying degrees of specificity towards purine and pyrimidine nucleosides. In E. coli, three genes were found that encode homologues of several known nucleoside hydrolases in protozoa. All three genes (designated yaaF, yeiK, and ybeK) were amplified by PCR and cloned. Two of the gene products (yeiK and ybeK) encode pyrimidine-specific nucleoside hydrolases, while the third (yaaF) encodes a nonspecific nucleoside hydrolase. All three were expressed at low levels and had different modes of regulation. As a comparative analysis, the homologous genes of Pseudomonas aeruginosa and P. fluorescens (designated nuh) were cloned. Both were determined to encode nonspecific nucleoside hydrolases. The nucleoside hydrolases of the pseudomonads exhibited markedly different modes of regulation. Both have unique promoter structures and genetic organization. Furthermore, both pseudomonad nucleoside hydrolase were found to contain an N-terminal extension of 30-35 amino acids that is shown to act as a periplasmic-signaling sequence. These are the first two nucleoside hydrolases, to date,that have been conclusively demonstrated to be exported to the periplasmic space. The physiological relevance of this is explained.
Date: December 2002
Creator: Fields, Christopher J.

A Comparison of Auditory and Visual Stimuli in a Delayed Matching to Sample Procedure with Adult Humans.

Description: Five humans were exposed to a matching to sample task in which the delay (range = 0 to 32 seconds) between sample stimulus offset and comparison onset was manipulated across conditions. Auditory stimuli (1” tone) and arbitrary symbols served as sample stimuli for three (S1, S2, S3) and two (S4 and S5) subjects, respectively. Uppercase English letters (S, M, and N) served as comparison stimuli for all subjects. Results show small but systematic effects of the retention interval on accuracy and latency to selection of comparison stimuli. The results fail to show a difference between subjects exposed to auditory and visual sample stimuli. Some reasons for the failure to note a difference are discussed.
Date: December 2002
Creator: DeFulio, Anthony L.

Consonance, Tertian Structures and Tonal Coherence in Wladimir Vogel's Dodecaphonic World

Description: Wladimir Vogel's (1896-1984) interest in twelve-tone composition began to develop in 1936 after hearing a series of lectures by Willi Reich, a music critic and supporter of the new music of the Second Viennese School. The transition for Vogel from a large-scale orchestral “classical” style, influenced by his study with Ferruccio Busoni in Berlin in the early 1920s, to a new technique involving dodecaphony is apparent in his instrumental writing, the third and fourth movements of the Konzert für Violine und Orchester (1937), as well as in his vocal writing, the Madrigaux for mixed a cappella choir (1938/39). Vogel's twelve-tone works exhibit tertian structures which are particularly emphasized by triads located as consecutive pitches within the rows. Emphasis on tertian structures are not limited to small-scale segmentation of the rows but can also be seen in the structural and tonal organization of complete movements and works. A primary example is the Konzert für Violoncello und Orchester (Cello Concerto) (1955) in which, on a smaller scale, the presentation of the row emphasizes both diminished and minor triads, and at the macro level, the structural triadic relationships unify passages within individual movements as well as the concerto as a whole. Since the work is composed using the twelve-tone method, consideration is given to the structure of the serial components. In addition, the concerto is analyzed in terms of its cognitive features-those elements that are demonstrably related to traditional practice- such as tertian melodic/harmonic outlines reinforced by rhythmic features that are common to eighteenth- and nineteenth-century practice. The compositional features evident from the serial structure of the work are addressed in conjunction with references to traditional practice made evident through the serial technique. The findings in the analysis of the Cello Concerto support the argument that the inclusion of consonant sonorities and tertian ...
Date: December 2002
Creator: Hale, Jacquelyn

The Contributions of Armenian Composers to the Clarinet Repertoire: An Annotated Bibliography of Selected Works, A Lecture Recital, Together with Three Recitals of Selected Works by Khachaturian, Bax, Castelnuovo-Tedesco, Lutoslawski, Nielsen, Burgmüller, and Others

Description: With the exception of the music of Aram Khachaturian, the output of Armenian composers has been largely overlooked. This small Middle-Eastern country with a population of almost four million and an intriguing history indeed has a rich musical heritage. From its roots in sacred music and folksong, Armenian music has evolved into a unique blend of national elements and Western art music. Although it remains largely undiscovered, there is an entire repertoire of works in this aesthetic. The Trio for clarinet, violin, and piano by Khachaturian has long been a standard in the clarinetist's repertoire. This project brings to light lesser-known works of other Armenian composers. After providing a brief history of Armenia and her music (Chapter 2), this document presents an annotated bibliography of works using the clarinet (Chapter 3). Because there are a significant number of Armenians living outside their homeland, composers considered for this bibliography include all those of Armenian descent: those born,schooled, and presently living in Armenia, as well as those born to one or both Armenian parents residing in other countries. The bibliography includes works for unaccompanied clarinet, clarinet and piano, clarinet and orchestra, and chamber music for up to seven players. Each annotation includes the composer's name, dates, title of the work and its movements, date of composition, instrumentation, publisher and date of publication (in the case of published works), source from which the score can be obtained (in the case of unpublished works and works that are no longer published), duration of the work, and any recordings that are commercially available. Specific information about each piece, such as its dedication, first performance, historical background, musical characteristics, and performance practice issues is provided when available.
Date: December 2002
Creator: Wolverton, Cynthia Kay

CT3 as an Index of Knowledge Domain Structure: Distributions for Order Analysis and Information Hierarchies

Description: The problem with which this study is concerned is articulating all possible CT3 and KR21 reliability measures for every case of a 5x5 binary matrix (32,996,500 possible matrices). The study has three purposes. The first purpose is to calculate CT3 for every matrix and compare the results to the proposed optimum range of .3 to .5. The second purpose is to compare the results from the calculation of KR21 and CT3 reliability measures. The third purpose is to calculate CT3 and KR21 on every strand of a class test whose item set has been reduced using the difficulty strata identified by Order Analysis. The study was conducted by writing a computer program to articulate all possible 5 x 5 matrices. The program also calculated CT3 and KR21 reliability measures for each matrix. The nonparametric technique of Order Analysis was applied to two sections of test items to stratify the items into difficulty levels. The difficulty levels were used to reduce the item set from 22 to 9 items. All possible strands or chains of these items were identified so that both reliability measures (CT3 and KR21) could be calculated. One major finding of this study indicates that .3 to .5 is a desirable range for CT3 (cumulative p=.86 to p=.98) if cumulative frequencies are measured. A second major finding is that the KR21 reliability measure produced an invalid result more than half the time. The last major finding is that CT3, rescaled to range between 0 and 1, supports De Vellis' guidelines for reliability measures. The major conclusion is that CT3 is a better measure of reliability since it considers both inter- and intra-item variances.
Date: December 2002
Creator: Swartz Horn, Rebecca

DADS - A Distributed Agent Delivery System

Description: Mobile agents require an appropriate platform that can facilitate their migration and execution. In particular, the design and implementation of such a system must balance several factors that will ensure that its constituent agents are executed without problems. Besides the basic requirements of migration and execution, an agent system must also provide mechanisms to ensure the security and survivability of an agent when it migrates between hosts. In addition, the system should be simple enough to facilitate its widespread use across large scale networks (i.e Internet). To address these issues, this thesis discusses the design and implementation of the Distributed Agent Delivery System (DADS). The DADS provides a de-coupled design that separates agent acceptance from agent execution. Using functional modules, the DADS provides services ranging from language execution and security to fault-tolerance and compression. Modules allow the administrator(s) of hosts to declare, at run-time, the services that they want to provide. Since each administrative domain is different, the DADS provides a platform that can be adapted to exchange heterogeneous blends of agents across large scale networks.
Date: December 2002
Creator: Cozzolino, Clifford Joseph

Decision-Making at the Court of Appeals Level Involving Religious Liberty Cases

Description: Many studies have been completed on factors affecting judicial decisions. Studies have focused on civil rights cases, economic cases, criminal cases, sexual discrimination and obscenity cases, but no work has specifically looked at religious liberty cases. This work examines the factors affecting United States Courts of Appeals judges' decision-making in religious liberty cases. I hypothesize that gender, race, religious background, prior judicial experience, circuit, region and litigant status will all influence the way judges vote in religious liberty cases. The explanatory power of this study is relatively low, but the results indicate that judges follow the law when making decisions in religious liberty cases.
Date: December 2002
Creator: Reeves, Susan Kay

Development, Validation, and Evaluation of a Continuous, Real-time, Bivalve Biomonitoring System

Description: A biological monitoring tool to assess water quality using bivalve gape behavior was developed and demonstrated. The purpose of this work was to develop methodologies for screening water quality appropriate to the goals of the watershed paradigm. A model of bivalve gape behavior based on prediction of behavior using autoregressive techniques was the foundation of the bivalve biomonitoring system. Current technology was used in developing the system to provide bivalve gape state data in a continuous real-time manner. A laboratory version of the system, including data collection and analysis hardware and software, was developed for use as a toxicological assay for determination of effective concentrations of toxicant(s) or other types of stress on bivalve gape behavior. Corbicula fluminea was monitored and challenged with copper, zinc, and chlorpyrifos using the system. Effective concentrations of 176±23µg/L copper, 768±412µg/L zinc, and 68µg/L chlorpyrifos were observed using a natural water with high dissolved organic carbon concentrations. A rugged field version of the bivalve biomonitoring system was developed and deployed in two locations. The field systems were fitted with a photovoltaic array, a single board computer, and a CDPD telemetry modem for robust remote operation. Data were telemetered at a time relevant rate of once every ten minutes. One unit was deployed in Lake Lewisville, Denton County, TX in February 2000. Data were telemetered and archived at a 92% success rate. Bivalve gape data demonstrated significant behavioral deviations on average 5 times per month. A second unit was deployed in Pecan Creek, Denton, TX in June 2001. Data from this site were telemetered and archived at a 96% success rate. Over the months of June-August 2001, 16 significant behavioral deviations were observed, 63% of which were correlated with changes in physical/chemical parameters. This work demonstrated the relative sensitivity of bivalve gape as a toxicological endpoint ...
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Date: December 2002
Creator: Allen, H. Joel

Differences in Perceptual-motor Functioning Between Blind and Sighted Adults: a Neuropsychological Perspective.

Description: The purpose of the study was to explore perceptual-motor differences between blind and sighted adults from a neuropsychological perspective, and to analyze differences within the blind group. Perceptual-motor abilities were examined using the Comprehensive Vocational Evaluation System (CVES), a vocational rehabilitation and neuropsychological battery designed for use with blind populations. The data were processed using Analysis of Covariance. Results showed that sighted persons had better motor abilities, while persons with blindness were more skilled at haptic identification of shape and texture. Analysis within the blind group showed that texture identification skills are better when blindness occurs earlier in life and to the extent that the blindness is total. Later onset blindness and the retention of some functional vision may not lead to a refocusing of attentional states necessary to develop haptic images. New neural connections may develop in persons with congenital/total blindness, a hypothesis in line with recent neuroradiological findings that occipital lobe activation occurs when congenitally blind individuals engage in tactile processing tasks. One implication of the findings is that teaching individuals who retain some functional vision to read Braille is probably counterproductive. These individuals would be better served by learning to use a CCTV and large print books. Future researchers should examine blindness from a multivariate perspective, examining subsets of blind groups based on age at onset, visual status, and other pertinent variables. Other implications are discussed and recommendations for future research are provided.
Date: December 2002
Creator: Joyce, Arthur

DirectShow Approach to Low-Cost Multimedia Security Surveillance System

Description: In response to the recent intensive needs for civilian security surveillance, both full and compact versions of a Multimedia Security Surveillance (MSS) system have been built up. The new Microsoft DirectShow technology was applied in implementing the multimedia stream-processing module. Through Microsoft Windows Driver Model interface, the chosen IEEE1394 enabled Fire-i cameras as external sensors are integrated with PC based continuous storage unit. The MSS application also allows multimedia broadcasting and remote controls. Cost analysis is included.
Date: December 2002
Creator: Xiao, Wu

Does Cultural Heterogeneity Lead to Lower Levels of Regime Respect for Basic Human Rights?

Description: This dissertation is a cross-national investigation of the relationship between cultural heterogeneity and regimes' respect for basic human rights. The quantitative human rights literature has not yet addressed the question of whether high levels of cultural diversity are beneficial or harmful. My research addresses this gap. I address the debate between those who argue that diversity is negatively related to basic human rights protection and those who argue it is likely to improve respect for these rights. Ultimately, I propose that regimes in diverse countries will be less likely to provide an adequate level of subsistence (otherwise known as basic human needs) and security rights (also known as integrity of the person rights) to their citizens than regimes in more homogeneous countries. Using a data set of 106 non-OECD countries for the years 1983 and 1993, I employ bivariate, linear multivariate regression, and causal modeling techniques to test whether higher levels of ethnolinguistic and religious diversity are associated with less regime respect for subsistence and security rights. The analysis reveals that higher levels of cultural diversity do appear to lead to lower respect for subsistence rights. However, counter to the hypothesized relationship, high levels of diversity appear to be compatible with high levels of respect for security rights.
Date: December 2002
Creator: Walker, Scott

Ecotoxicological Investigations in Effluent-Dominated Stream Mesocosms

Description: The University of North Texas Stream Research Facility (UNTSRF) was designed to examine contaminant impacts on effluent-dominated stream ecosystems. Stream mesocosms, fed municipal effluent from the City of Denton, TX, Pecan Creek Water Reclamation Plant (PCWRP), were treated with 0, 15 or 140 µg/L cadmium for a 10-day study in August 2000. Laboratory toxicity test and stream macroinvertebrate responses indicated that cadmium bioavailability was reduced by constituents of effluent-dominated streams. The Biotic Ligand Model (BLM) for Cd was used to predict a 48 hour Cd EC50 for Ceriodaphnia dubia of 280 µg/L in these effluent-dominated streams. This value is higher that an EC50 of 38.3 µg/L Cd and a 7-day reproduction effect level of 3.3 µg/L Cd generated for C. dubia in reconstituted laboratory hard water. These results support use of a cadmium BLM for establishing site-specific acute water quality criteria in effluent-dominated streams. Although not affected by 15 µg/L treatments, organisms accumulated Cd in 15 µg/L treated streams. Hence, over longer exposure periods, Cd accumulation may increase and a no effect level may be lower than the observed 10-day no effect level of 15 µg/L. A toxicity identification evaluation procedure was utilized with in vitro and in vivo bioassays to identify estrogenic compounds in PCWRP effluent, previously identified to seasonally induce vitellogenin (VTG) in male fathead minnows. Steroids, nonylphenol ethoxylate metabolites, and other unidentified compounds were identified as causative effluent estrogens. These findings suggest that in vivo VTG bioassays should be used to confirm in vitro Yeast Estrogen Screening assay activity when effluents are fractionated or screened for estrogenicity. A subsequent 90-day cadmium study was initiated to assess long-term effluent and cadmium effects on fish endocrine function. Juvenile fathead minnows were placed in UNTSRF pool sections of replicate streams treated with 0, 5, 20 or 80 µg/L Cd. Male ...
Date: December 2002
Creator: Brooks, Bryan W.

The Effect of Personality Type on the Use of Relevance Criteria for Purposes of Selecting Information Sources.

Description: Even though information scientists generally recognize that relevance judgments are multidimensional and dynamic, there is still discussion and debate regarding the degree to which certain internal (cognition, personality) and external (situation, social relationships) factors affect the use of criteria in reaching those judgments. Much of the debate centers on the relationship of those factors to the criteria and reliable methods for measuring those relationships. This study researched the use of relevance criteria to select an information source by undergraduate students whose task it is to create a course schedule for a semester. During registration periods, when creating their semester schedules, students filled out a two-part questionnaire. After completion of the questionnaire the students completed a Myers-Briggs Type Indicator instrument in order to determine their personality type. Data was analyzed using one-way ANOVAS and Chi-Square. A positive correlation exists between personality type as expressed by the MBTI and the information source selected as most important by the subject. A correlation also exists between personality type and relevance criteria use. The correlation is stronger for some criteria than for others. Therefore, one can expect personality type to have an effect on the use of relevance criteria while selecting information sources.
Date: December 2002
Creator: Sims, Dale B.

The Effects of a Kindergarten-First Grade Looping Program on Academic Achievement and Self-Esteem

Description: The purpose of this study was to determine if academic achievement and academic self-esteem can be linked to the non-traditional organizational pattern of looping in kindergarten and first grade classes. Looping is defined as one teacher remaining with the same students for two or more years. Using a control group-experimental group design where the experimental group participated in the looping program and the control group did not, and applying the statistical procedure of multivariate analysis of variance (MANAVO), it was found that there was no significant difference between the subjects in the two groups on the criterion variable of academic achievement as measured by the Iowa Test of Basic Skills, and the criterion variable of academic self-esteem as measured by the Culture-Free Self-Esteem Inventory, Second Edition. It was concluded that further study would need to be done to determine if there are advantages to an organizational pattern of looping for students in public elementary schools.
Date: December 2002
Creator: Murphy, Doris Jo

The Effects of Reinforcing Operant Variability on Task Acquisition

Description: Neuringer, Deiss, and Olson (2000) was replicated and extended to determine the effect of variability contingencies on task acquisition for twelve 7-9 year old children. Subjects first learned to press a computer's shift keys with increasing response variation. Each subject was then exposed to one of three experimental conditions during which they received a point for target responses. Variability condition subjects received additional points on a variable interval schedule for nontarget responses occurring less than 3% of the time. The any condition subjects received additional points on a variable interval schedule for any nontarget response. Control subjects received points only for target responses. All variability condition and two control subjects learned the target response. All any condition subjects and two control subjects did not.
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Date: December 2002
Creator: Seymour, Kail H.