UNT Theses and Dissertations - 21,383 Matching Results

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Effect of Resistance Training on Cytokines in Hiv+ Men with Chemical Dependence

Description: Human immunodeficiency virus (HIV) and substance abuse (drug and/or alcohol) independently impair the immune system; importantly, the combination of HIV infection and substance abuse might produce more than an additive effect on this system. Tumor necrosis factor-alpha (TNF-?) and Interferon gamma (IFN?) are pro-inflammatory cytokines involved in differentiation of Th0 cells into Th1 cells. Interleukin 4 (IL-4) and Interleukin 10 (IL-10) are anti-inflammatory cytokine involved in differentiatio… more
Date: May 2012
Creator: Curtis, John Harper
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Effect of Resource Availability on Dyadic Fitness

Description: College students participating in dyads played a game designed as an analog of early hunters whose survival, as a dyad and ultimately individually, depend on rabbits they hunt. Dyadic fitness was defined as both participants being able to hunt and it was measured by the proportion of trials in a condition that both participants hunted. The effects of scarcity (alternating rich and poor conditions) on dyadic fitness were examined in two experiments. First experiment results did not show a differ… more
Date: August 2010
Creator: Neves, Ana Barbara Vieira Sinay
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The Effect of Response-Contingent Positive Stimulation of the Frequency of Intervals of Specified Fluent Verbal Behavior of Stutterers

Description: Intervals of specified fluent verbal behavior of two stutterers received response-contingent positive stimulation in the form of an accumulating points system, Assessment was made o the effect of experimental manipulation on the frequency of fluent speech intervals as well as on the frequency of subject-identified stuttering behaviors observed during the experimental session. The results indicated significant change in fluent interval frequency in the spontaneous speech of one subject. Effect o… more
Date: August 1976
Creator: Scarborough, John L.
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The Effect of Response Preclusion on Stereotypy and Play in a Child with Autism.

Description: This study investigates the effectiveness of response preclusion on stereotypic behavior (climbing and licking) and on play for a child with autism. Data were collected on stereotypic responses, play behavior, and the types of play materials the participant contacted. Implementation of response preclusion was followed by both a decrease in stereotypic behavior as well as an increase in play behavior. Play behavior did not return to baseline levels of responding during reversals to baseline, a… more
Date: December 2004
Creator: Delgado, Veronica
Item Type: Refine your search to only Thesis or Dissertation
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The Effect of Restructuring of Peer Firms on Investment

Description: Firms' operational restructuring involves information relevant to strategic choices as well as future demand and cost conditions. This study examines the relationship between peer firms' restructuring and a company's responsiveness to its growth opportunities. Peer firm restructuring can increase uncertainty with respect to a company's payoffs regarding its investment projects, leading to decreased responsiveness to growth opportunities. Using a large sample of public companies during 2006–2020… more
Date: December 2023
Creator: Kim, Hojoong
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Effect of Retting on Surface Chemistry and Mechanical Performance Interactions in Natural Fibers for High Performance Polymer Composites

Description: Sustainability through replacement of non-renewable fibers with renewable fibers is an ecological need. Impact of transportation costs from South-east Asia on the life cycle analysis of the composite is detrimental. Kenaf is an easily grown crop in America. Farm based processing involves placing the harvested crop in rivers and ponds, where retting of the fibers from the plant (separation into fibers) can take 2 weeks or more. The objective of this thesis is to analyze industrially viable proce… more
Date: May 2013
Creator: Ramesh, Dinesh
Item Type: Refine your search to only Thesis or Dissertation
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The Effect of Rhythm on Melodic Expectancy

Description: The present study sought to confirm melodic expectancy patterns discovered in a previous investigation and to determine whether data would be affected by altering the rhythmic condition of the stimuli. The three problems of this investigation were to study expectancies generated by two-note stimulus intervals of equal duration; the expectancies generated by stimulus intervals presented with a long-short rhythm; and the expectancies generated by stimulus intervals presented with a short-long rhy… more
Date: August 1985
Creator: Rose, Bernard N. (Bernard Norman)
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Effect of Ribavirin on Phenotypic Reversion of Mammalian cells Transformed by Temperature-Sensitive Mutants of Avian Sarcoma Virus

Description: The effect of ribavarin (1-β-D-ribofuranosyl-1,2,4-triazole-3-carboxamide), a synthetic nucleoside, on a series of cellular properties which characterize the transformed state was studied using normal rat kidney cells (NRK) and cloned derivatives transformed by a wild type avian sarcoma virus, B77-NRK, and by a temperature-sensitive mutant of the virus, LA31-NRK.
Date: December 1984
Creator: Siripont, Janya
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The Effect of Ritalin on WISC-R Block Design WISC-R Coding and Bender Gestalt Developmental Scores of Hyperactive Children

Description: Psychological research suggests that Ritalin reduces the rate of maladaptive behaviors in hyperactive children but does not improve their academic performance. Teachers, however, often assert that writing skills and other graphic work are improved by Ritalin. Twenty elementary school children who had been diagnosed as hyperactive and who were taking Ritalin were tested using WISC-R coding, WISC-R block design, and Bender Gestalt. Ten of the subjects were assigned to a group which was first test… more
Date: May 1986
Creator: Wall, Mark
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The Effect of Ropes Course Elements on Self-Concept and Affective Behavior

Description: The purpose of this study was to investigate the effects of a ropes course program on self-concept and affective behavior, based on the belief that ropes course participants would rate significantly higher than non participants. A group of freshmen from a select liberal arts college made up the population. Measuring instruments used were the Tennessee Self-Concept Scale and the Platt Affective Behavior Scale. The program was a pre-test, post-test control group design. Data were analyzed by two … more
Date: December 1990
Creator: Sturdivant, Virginia Ann
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The Effect of Roughness Elements on the Magnus Characteristics of Rotating Spherical Projectiles

Description: Thirty trials of each of three roughness conditions were examined. The first condition consisted of a baseball pitched so that two of the roughness elements opposed the flow. The second condition consisted of a pitched baseball with four of the roughness elements opposing the flow. The third consisted of a pitched uniformly rough sphere. The conclusions were that roughness elements increase horizontal flight deviations when a baseball rotates about a vertical axis; roughness elements on the sur… more
Date: December 1982
Creator: Smith, Michael A. (Michael Albert)
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The Effect of Running Speed on VO2 Kinetics in the Severe Exercise Domain

Description: There has been an interest in the kinetics of the V02 response during exercise at various intensities. However, most studies focus on the response of submaximal intensities whereas few studies have examined V02 kinetics at severe intensities. The purpose of this study was to evaluate the effect of exercise intensity on V02 kinetics over a range of severe intensities.
Date: December 1997
Creator: Williams, Christine Suzanne
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The Effect of Scheduling on College Achievement

Description: This investigation is concerned with the problem of determining the variation of test achievement obtained by students enrolled on a MWF and a TTh schedule. The purpose of the study is to determine if either schedule is superior. The Ss were students enrolled in an Introductory Psychology course at North Texas State University. A t test was administered to the experimental data. The experimental hypothesis of an expected higher test achievement by students enrolled in the TTh schedule was rejec… more
Date: December 1974
Creator: Boney, Ronald Jay
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The Effect of Season Performance on Male and Female Track and Field Athletes’ Self-identity

Description: Although the “self” has generally been conceptualized as relatively stable in sport-specific research, events such as deselection, injury, and career termination have been found to negatively affect athletes’ levels of identification with the athlete role. Additionally, there has been limited research regarding competitive failure and its ability to negatively affect athletes’ levels of identification with the athlete role. The purpose of the present investigation was to provide additional evid… more
Date: August 2013
Creator: Bradstreet, Tyler C.
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The Effect of Seat Back Angle on Responses During Recumbent Cycling

Description: The purpose of this study was to evaluate metabolic, cardiorespiratory, and perceptual responses during recumbent cycle ergometry performed at various seat back angles and different work rates. Healthy college-aged men performed steady-state exercise at two work rates, 100 watts (n=46) and 150 watts (n=26), using five back seat angles, 90, 105, 120, 135, and 150 degrees. The results of this study suggest that recumbent seat back angles of 135 to 150 degrees are associated with lower metabolic a… more
Date: December 1990
Creator: Smith, Jimmy C.
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The Effect of Selected Shorthand Transcription Drills Upon Transcription Skill Development

Description: This study was an experimental design, using twenty-two variables, twelve covariates, and six criterion measures. The purpose of the study was the effect of the use of selected transcription drills in beginning shorthand on the ability of students to produce both typewritten copy and mailable letters from shorthand notes. The bases for comparison were five minute timed transcription tests, three-minute dictation tests, and thirty-minute mailable letter production tests, of both previewed and un… more
Date: December 1976
Creator: Haney, Annice Mauldin
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The Effect of Self Concept and Various Conceptual and Physical Practice Methods Upon the Performance of a Selected Basketball Motor Skill

Description: The problem investigated was the effect of various methods of conceptual, physical, and conceptual-physical practice procedures upon performance of the basketball motor skill of foul shooting. The sub-problem under investigation was the effect of self-concept upon the performance of foul shooting.
Date: May 1971
Creator: Lewis, Raymond Lee
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The Effect of Sequencing Microeconomics and Macroeconomics on Learning

Description: The purpose of this study was to determine the effect on student learning from the sequence in which microeconomics and macroeconomics courses are taken. The sample for this study consisted of all students enrolled in 23 sections of Economics 1100 (Principles of Microeconomics) and 10 sections of Economics 1110 (Principles of Macroeconomics) during the fall semester, 1987, at the University of North Texas. The sample also consisted of all students enrolled in 14 sections of Economics 1100 and … more
Date: August 1989
Creator: Trask, Jill A. (Jill Ann)
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The Effect of SFAS No. 141 and SFAS No. 142 on the Accuracy of Financial Analysts' Earnings Forecasts after Mergers

Description: This study examines the impact of Statements of Financial Accounting Standards No. 141 and No. 142 (hereafter SFAS 141, 142) on the characteristics of financial analysts' earnings forecasts after mergers. Specifically, I predict lower forecast errors for firms that experienced mergers after the enactment of SFAS 141, 142 than for firms that went through business combinations before those accounting changes. Study results present strong evidence that earnings forecast errors for companies invol… more
Date: May 2005
Creator: Mintchik, Natalia Maksimovna
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Effect of Small Group Incentives on Sales Productivity in Two Retail Shops: A Case Study

Description: To meet global competition many companies have reorganized work process systems, eliminated management levels, formed employee work groups and implemented variable compensation systems. This study investigated the effect of group incentives on individual sales performance in two specialty shops located in a large metropolitan hotel. Two questions were addressed: What effect would adding a group bonus plan have on individual employee's sales performance who had previously received hourly wages … more
Date: May 1994
Creator: Bohrer, Kathleen
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