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8,628 Matching Results
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Fall and winter movements and activity of muskrats in east-central Minnesota
None
Date:
August 1, 1974
Creator:
Stolen, Paul Dean
System:
The UNT Digital Library
The Specific Heat of Dysprosium Metal Between 0.4 and 4 K
Submitted to Illinois Inst. of Tech., Chicago. A He/sup 3/ cryostat was built to measure the specific heat of rare earth metals which have a component, at low temperatures, attributable to the electrons in the incomplete 4f shell. The specific heat of dysprosium from 0.4 to 4.2 deg K was measured. Pertinent theories about specific heats are outlined. The apparatus included the cryostat, vacuum and He/sup 3/ systems, calorimeter, carbon thermometer, heater, and magnetic thermometer. The experimental procedure is described and results are presented in graphic and tabular form. The specific heat rose sharply below 1 deg K. An anomalous hump was centered about 2.35 deg K. (M.C.G.)
Date:
August 1, 1962
Creator:
Guenther, R. A.
System:
The UNT Digital Library
Response of Shortgrass Plains Vegetation to Chronic and Seasonally Administered Gamma Radiation
In order to determine the effect of radiation on the structure of native shortgrass plains vegetation, an 8750 Ci 137Cs source was installed on the Central Plains Experimental Range near Nunn, Colorado; The experimental area was divided into 6 treatment sectors, a control, 2 sectors for chronic exposure (irradiation initiated April 1969 and continuing as of August 1971), and one each for spring, summer and late fall seasonal semi-acute (30 day), exposures which were administered during April, July and December, 1969, respectively. Community structure was measured by coefficient of community and diversity index. Yield was determined by clipping plots in September 1970 and visual estimates in September 1969 and 1970 for the grass-sedge component of the vegetation. Individual species sensitivity was determined by density data recorded in April, June and September of 1969 and 1970 and by a phenological index recorded at weekly intervals during the 1969 and 1970 growing seasons. The response of the vegetation was similar whether determined by coefficient of community or diversity with diversity being a more sensitive measure of effects. In the chronically exposed sectors, the exposure rate which resulted in a 50 per cent reduction in these 2 parameters (CC50 or D50) was still …
Date:
August 1, 1971
Creator:
Fraley, L. Jr.
System:
The UNT Digital Library
A Method for Estimating the Heat of Formation and Free Energy of Formation of Inorganic Compounds
None
Date:
August 1, 1962
Creator:
Wilcox, D. E.
System:
The UNT Digital Library
The Angular Distribution of Fission Fragments From the Fast Neutron-Induced Fission of U-234
Submitted to Univ. of Tennessee, Knoxville. The fast neutron-induced fission cross section of U/sup 234/ was measured from threshold to 4-Mev neutron energy. A maximum of 1.26 barns was found at 850 kev followed by a minimum of 1.10 barns at 8050 kev. The angular ani-sotropy of the fragment distribution was measured for neutron energies from 400 kev to 4 Mev. Extrema in the ratio sigma /sub f//( sigma /sub f(90 deg ) were found at 500, 850, and 1050 kev; the distribution at 500 kev showing a maximum in the direction normal to the beam (side-wise peaking) while that at 850 kev showed a maximum along the beam direction. The distribution at 8050 kev showed forward peaking but to a lesser extent than for energies immediately higher or lower. The behavior was analyzed according to the theories of Bohr and Wheeler. The dip in cross section between 850 and 1050 kev is consistent with the suggestion of Wheeler that neutron competition in the decay of the compound nucleus enters with increased strength in this area. Vibration-rotational levels in U/sup 234/ beginning at 790 kev are known to exist and inelastic neutron scattering to these levels serves to depress the …
Date:
August 27, 1962
Creator:
Lamphere, R. W.
System:
The UNT Digital Library
Transnational Organized Crime and Destabilization in Democracies, Russian Organized Crime as Case Study
Transnational organized crime has been prevalent during the last century, but it recently has been recognized as a threat to the world order. Governments throughout the world, along with the intergovernmental organizations identified this phenomenon as a new threat to domestic and international security. This paper attempts to explain the impacts of transnational organized crime on the functioning of democratic societies by adopting the Russian Organized Crime as case study. The descriptive research with regard to definition, scope and organization of transnational organized crime, along with the objectives, limitations and methodology of this research will be included in the first chapter. Recent trends observed in organized crime`s character and the impact of organized crime on the political economies of democratic regimes will be contained in the following chapters. Pre-conditions for a broader response to transnational organized crime and conclusive remarks will be the context of the last chapter.
Date:
August 2001
Creator:
Yasar, Muhammet Murat
System:
The UNT Digital Library
Increasing Differentiation on Vocational Assessments among Gifted High School Students
Multipotentiality makes career counseling with gifted students difficult. High-flat vocational profiles give the impression that gifted students can develop a wide range of abilities to an equally high level. High-flat vocational profiles may be due to assessments that consider abilities and disregard interests and values, and ceiling effects from the use of age-appropriate, rather than cognitively-appropriate measures. Subjects included 170 gifted students from a residential, early college entrance program (M=15.9 yrs., SD=.361). Subjects completed the Scholastic Aptitude Test, Self-Directed Search, and Study of Values. McNemar's Test of Correlated Proportions shows the proportion of multipotential profiles decreases significantly when cognitively-appropriate measures of interests and values are considered, in addition to abilities. Pearson Chi-square shows no ethnic differences.
Date:
August 1997
Creator:
Kidner, Cindy L. (Cindy Lee)
System:
The UNT Digital Library
Perceptions of Work Group and Managerial Behaviors as Antecedents of a Salesperson's Commitment, Performance, and Turnover
Theoretically grounded and empirically testable conceptualizations that offer alternative explanations regarding sales force performance and turnover can: (a) enhance understanding regarding these pivotal outcomes, and (b) augment an organization's capability to increase sales and decrease turnover. The study advances one such explanation by conceptualizing and testing a perceptual model that links a salesperson's psychological climate dimensions to organizational commitment, performance, and turnover. The framework the study proposes respecifies the leadership and work group dimensions of psychological climate into four distinct perceptions (i.e., a salesperson's perceptions regarding the behaviors of work group, sales manager, senior management, and non sales employees in the organization). These climate dimensions are posited to influence positively a salesperson's organizational commitment which consequently influences positively the salesperson's effort and intention to stay with the organization. The proposed outcomes of organizational commitment result in increased performance and decreased turnover. Success beliefs and perceived behavioral control are posited to moderate the relationship between the salesperson's organizational commitment and effort. The study tests the hypothesized relationships on a sample of salespersons belonging to a telecommunications organization utilizing path and hierarchical regression analyses.
Date:
August 1999
Creator:
Gulati, Rajesh, 1964-
System:
The UNT Digital Library
The Relationship of Fifth-Grade Students' Self-Concepts and Attitudes toward Mathematics to Academic Achievement in Arithmetical Computation, Concepts, and Application
The purpose of this study was to determine the interrelationship of self-concept and attitude toward mathematics to academic achievement in the areas of arithmetical computation, concepts, and application.
Date:
August 1971
Creator:
Moore, Bobbie Dean
System:
The UNT Digital Library
A Study of Differences Perceived by Information Systems Professionals in the Systems Development Job Environment Due to the Use of ICASE Technology
Information systems professionals now face the automation of their own work in integrated computer aided software engineering. Organizations need to achieve all the leverage possible from costly IT implementations to enhance competitiveness, profitability, and survival in a rapidly changing environment. ICASE technology is a part of the infrastructure necessary to meet this challenge but appears to present significant difficulties in implementation.
Date:
August 1997
Creator:
Troboy, Lori Kim
System:
The UNT Digital Library
Examination of the Effects of Experience and Missing Information on Tax Preparer Judgment
This research examines how experience and missing information affect judgments of tax return preparers. Tax return preparers may often be faced with the problem of incomplete information, and their responses to this problem may be conditioned by whether or not they recognize information is missing. Based on the Holland et al.'s cognitive theory of induction as applied to tax judgment by Marchant et al., it was hypothesized that experienced tax preparers would correctly classify more items as to their relevance to a specific tax issue than novice tax preparers. Additionally, it was hypothesized that the strength of recommendations of tax preparers who had no relevant information missing would be greater than the strength of recommendations of tax preparers who had relevant information missing and were prompted that information was missing. Lastly, it was hypothesized that prompting that relevant information was missing would have a greater effect on the strength of recommendations of tax return preparers with lesser specific experience than it would on the strength of recommendations of tax return preparers with greater specific experience. The results suggest that experienced tax preparers do recognize the relevance of information to a greater degree than novice tax preparers. There was no significant …
Date:
August 1996
Creator:
Lewis, Judy D. (Judy Dianne)
System:
The UNT Digital Library
The Texas Assessment of Academic Skills (TAAS) Test Scores as Predictors of Academic Success of First-Year Clarendon College Students
The problem in this study was to determine the relationship between the scores on the three parts (reading, writing, and mathematics) of the Texas Assessment of Academic Skills Test (TAAS) and the academic success of first-year students at Clarendon College, Clarendon, Texas. High school grade-point average and gender were also included in the study. The purpose of the study was to develop an equation to predict first-year college grade-point average at Clarendon College . The predictor variables were the three parts of the TAAS Test (reading, writing, and mathematics) , high school grade-point average, and gender. The equation was developed through multiple correlation/multiple regression multivariate procedures. All statistical analyses were calculated through sub-programs of the Statistical Package for the Social Sciences (SPSS). The study was limited to using only 1992/1993 Texas high school graduates who had entered Clarendon College in the fall semesters of 1992 and 1993 directly following high school graduation. A search of Clarendon College records produced 115 students from these groups who fully met all standards defined for the study. Two predictor equations were developed. One developed through a simple regression command included all five predictor variables. The second equation was produced through a stepwise procedure. This …
Date:
August 1996
Creator:
Anglin, James William
System:
The UNT Digital Library
A Unifying Version Model for Objects and Schema in Object-Oriented Database System
There have been a number of different versioning models proposed. The research in this area can be divided into two categories: object versioning and schema versioning. In this dissertation, both problem domains are considered as a single unit. This dissertation describes a unifying version model (UVM) for maintaining changes to both objects and schema. UVM handles schema versioning operations by using object versioning techniques. The result is that the UVM allows the OODBMS to be much smaller than previous systems. Also, programmers need know only one set of versioning operations; thus, reducing the learning time by half. This dissertation shows that UVM is a simple but semantically sound and powerful version model for both objects and schema.
Date:
August 1997
Creator:
Shin, Dongil
System:
The UNT Digital Library
The Effectiveness of Speech Recognition as a User Interface for Computer-Based Training
Some researchers are saying that natural language is probably one of the most promising interfaces for use in the long term for simplicity of learning. If this is true, then it follows that speech recognition would be ideal as the interface for computer-based training (CBT). While many speech recognition applications are being used as a means for a computer interface, these are usually confined to controlling the computer or causing the computer to control other devices. The user input or interface has been the recipient of a strong effort to improve the quality of the communication between man and machine and is proposed to be a dominant factor in determining user productivity, performance, and satisfaction. However, other researchers note that full natural interfaces with computers are still a long way from being the state-of-the art with technology. The focus of this study was to determine if the technology of speech recognition is an effective interface for an academic lesson presented via CBT. How does one determine if learning has been affected and how is this measured? Previous research has attempted quantify a learning effect when using a variety of interfaces. This dissertation summarizes previous studies using other interfaces and those …
Date:
August 1995
Creator:
Creech, Wayne E. (Wayne Everette)
System:
The UNT Digital Library
Sufficient Conditions for Uniqueness of Positive Solutions and Non Existence of Sign Changing Solutions for Elliptic Dirichlet Problems
In this paper we study the uniqueness of positive solutions as well as the non existence of sign changing solutions for Dirichlet problems of the form $$\eqalign{\Delta u + g(\lambda,\ u) &= 0\quad\rm in\ \Omega,\cr u &= 0\quad\rm on\ \partial\Omega,}$$where $\Delta$ is the Laplace operator, $\Omega$ is a region in $\IR\sp{N}$, and $\lambda>0$ is a real parameter. For the particular function $g(\lambda,\ u)=\vert u\vert\sp{p}u+\lambda$, where $p={4\over N-2}$, and $\Omega$ is the unit ball in $\IR\sp{N}$ for $N\ge3$, we show that there are no sign changing solutions for small $\lambda$ and also we show that there are no large sign changing solutions for $\lambda$ in a compact set. We also prove uniqueness of positive solutions for $\lambda$ large when $g(\lambda,\ u)=\lambda f(u)$, where f is an increasing, sublinear, concave function with f(0) $<$ 0, and the exterior boundary of $\Omega$ is convex. In establishing our results we use a number of methods from non-linear functional analysis such as rescaling arguments, methods of order, estimation near the boundary, and moving plane arguments.
Date:
August 1995
Creator:
Hassanpour, Mehran
System:
The UNT Digital Library
The Effects of Two Types of Group Counseling Procedures with Junior College Students
The problem with which this investigation was concerned was to measure personal adjustment, emotional adjustment, home adjustment, and self-concept changes that took place in junior college students as a result of one-counselor group counseling and male-and-female co-counselor group counseling. The rationale for male-and-female co-counselor group counseling relied on the formation of a simulated family in which individuals could socialize their feelings.
Date:
August 1971
Creator:
West, William George
System:
The UNT Digital Library
Ronald Stevenson's Passacaglia on DSCH: Understanding the Composer's Unique Approach to Large-Scaled Structure, a Lecture Recital, together with Three Recitals of Selected Works of L.V. Beethoven, J. Brahms, F. Liszt, F. Mendelssohn, B. Bartók and Others
This paper investigates Ronald Stevenson's unique treatment of large-scaled structure in his Passacaglia on D S C H. This piece's unusual eighty-minute length, use of traditional forms and unusual piano techniques, musical references to other cultures and a massive triple-fugue over a ground bass will be examined as they relate to its overall form. The elements of rhythm, melody/mode, harmony, counterpoint, piano techniques, and tonality are also used as means of highlighting many unifying elements of the piece which contribute to its overall cohesiveness. Tributes to other composers, among them Dimitry Shostakovich to whom the piece is dedicated, are discussed in addition to many references to world cultures and events which support Stevenson's views on what he terms world music. Rarely is a piece written that encompasses such a wide range of musical elements that possess the ability to engage an audience for an uninterrupted length of eighty-minutes. As of yet, an in-depth scholarly investigation of Stevenson's treatment of formal unity in this landmark piano work has not been done. This analysis reveals Stevenson's approach to composing in such a large form, as well as illustrating his mastery of variation, counterpoint and unending ingenuity for innovative piano techniques. The composer's …
Date:
August 1994
Creator:
Beckman, Bradley
System:
The UNT Digital Library
Non-Native Speakers of English and Denominal Regularization
The purpose of this study was to determine whether nonnative speakers of English have access to specifically-linguistic constraints governing past tense morphology. Forty non-native speakers of English rated the naturalness of 29 exocentric, or headless, verbs in a partial replication of Kim, Pinker, Prince, and Prasada (1991) which looked at the same phenomenon in native speakers. Nonnative speaker performance was similar to the 40 subject native speaker control group. A correlation also existed between length of residence and subject ratings. The results imply that non-native speakers have access to the rules governing past tense morphology although not as completely as native speakers.
Date:
August 1994
Creator:
Borden, David S. (David Scott)
System:
The UNT Digital Library
Development of Place-Value Numeration Concepts in Chinese Children: Ages 3 through 9
This investigation examined Chinese children's development of place-value numeration concepts from ages 3 through 9, compared the development of place-value understanding of these Chinese children with that of American and Genevan children whose performances had been described in the literature, and examined the influence of adult assistance during Chinese children's performances on some of the place-value tasks.
Date:
August 1995
Creator:
Chang, Sy-Ning
System:
The UNT Digital Library
GABAᴀ Receptors in Rat Whisker Barrel Cortex: Effects of Sensory Deprivation
The GABAergic system in adult sensory cortex is affected by sensory deprivation, but little is known about how this predominant inhibitory system is affected during ontogeny. The present study investigates developmental effects of whisker trimming on GABAa receptors in rat barrel cortex. Rats trimmed for 6 wk beginning at birth and adulthood showed similar decreases in [3H]muscimol binding in deprived relative to non-deprived barrels, suggesting absence of a critical period.
Date:
August 1995
Creator:
Salazar, Eduardo, 1962-
System:
The UNT Digital Library
The Substance Abuse Subtle Screening Inventory: a Predictive Validity Study with Criminal Offenders Mandated to Rehabilitative Treatment
The Substance Abuse Subtle Screening Inventory was constructed to screen for substance abuse patterns despite non-admittance of respondents. Predictive validity studies of the SASSI are limited, and are not available for probationers. Participants were 147 male and 54 female probationers mandated to treatment. Overall differences among SASSI scales were significant for treatment compliance and outcome. Higher SASSI scales were found among those probationers who were compliant/successful. Individual scales were not significantly different, however, a trend was revealed; those respondents who scored higher tended to comply/succeed in treatment. The SASSI alone accurately classified 59.7% of respondents. In summary, the SASSI's use in predicting treatment outcome is limited and should be employed with concomitant data.
Date:
August 1996
Creator:
Flores, Johnny Martin
System:
The UNT Digital Library
The Relationship between Self-Reported Bulimic Behavior and Cardiovascular Reactivity to a Weight Stressor
This investigation sought to identify anxiety responses to weight measurement, assessed by verbal report and cardiovascular reactivity CCR3 (systolic blood pressure, diastolic blood pressure, heart rate), which might differentiate females with either high or low self-reported bulimic behavior. Secondar i ly,, the study attempted to examine specific autonomic nervous system (ANS) arousal patterns of each group over time. The Bulimia Test (BULIT), Body Dissatisfaction Scale (BD), and a demographic questionnaire were administered to 105 undergraduate females at The University of North Texas. Based on BULIT scores, females were divided into high or low bulimic behavior groups. Of the 105 females screened, forty participated in the experiment which consisted of four phases: relaxation, anticipation of weight measurement, weight measurement, and recovery. Subjects had no prior knowledge of the weight stressor until presentation during the experiment. Results showed that subjects' notion of ideal weight was substantially lower than measured weight. During weight measurement, all subjects reported increased anxiety although the high group reported significantly more anxiety. Contrary to prediction, no significant group differences in CR were found when repeated measures multivariate analysis of variance (MANOVA) was performed. Orthogonal polynomial trend analysis was done with pooled groups, resulting in significant within-subject trends for …
Date:
August 1993
Creator:
Marcontell, Deborah K. (Deborah Kay)
System:
The UNT Digital Library
Homecourt: A Nondirective Student Support Group
The purpose of this study was to describe and analyze how Homecourt, a nondirective support group at a public high school in the Dallas/Fort Worth area, operates and how it affects students.
Date:
August 1994
Creator:
Nelson, Robert E., 1945-
System:
The UNT Digital Library
Statesman from Texas, Roger Q. Mills
This is a biography of Roger Quarles Mills and his contributions to Texas history.
Date:
August 1954
Creator:
Purifoy, Russell Albritton, Jr.
System:
The UNT Digital Library