Digital Commons Network^™

Reliability Of Q-Angle Measurement, Elisabeth Ann Grusheski

Community & Environmental Health Theses & Dissertations

Various methods of measuring the Q-angle are reported in the literature. The reliability of these measurement methods has not been established. The purpose of this study was to examine the intra- and inter-tester reliability of a method for measuring the Q-angle using a goniometer. The measurement method was performed on 40 normal, healthy subjects who volunteered to participate in the study. There were 27 female subjects and 13 male subjects.

Two physical therapists (Tester 1 and Tester 2) took repeated Q-angle measurements. Measurements were taken on the same day with an interval of five to 10 minutes between measurements. Measurements …

An Analysis And Evaluation On Printed Materials Used In Genetic Counseling, Janet L. Macarthur

Community & Environmental Health Theses & Dissertations

The purpose of this study was to examine printed educational materials on five specific genetic disabilities and evaluate them for appropriateness of reading level and for inclusion of several specific issues related to the adequacy of the literature. Publicly available literature was analyzed using the Flesch-Kincaid Readability Formula and content analysis to estimate readability and to test for the presence of a definition of the disorder, a description of the basic genetics of the disorder and its symptomology, references to support groups and references for further information.

The data indicate that a definition of the disorder was included in 85% …

Mine Warfare In The Russian And Soviet Navies, Jeffrey K. Bray

Graduate Program in International Studies Theses & Dissertations

This thesis examines the development of technology, tactics, strategy, and organization of mine warfare in the Russian and Soviet navies from 1807 to the present. The author reviews the trials and tribulations of the development of naval mines and their employment within these two navies. This development has been primarily driven by the needs of war and advances of technology. In spite of occasional setbacks, the Russian and Soviet mine warfare forces continued to provide support to the overall naval and central policies of their respective governments. This support has often been during times of high tension and limited resources. …

Honduras Pawn And Policy Maker, Elizabeth P. Thornton

Graduate Program in International Studies Theses & Dissertations

A study of the weak state was conducted using the Honduras-U.S. relationship as a case study. Most existing literature, with the exception of Annette Baker Fox's The Power of Small States, does not analyze in detail a specific country's relationship with a powerful nation. This research examined the factors that helped a weak country maintain maneuverability in its domestic and foreign policies when under the influence of a strong power. Six conditions which facilitated maneuverability were: geographic proximity, rising nationalism, citizen participation in government, trade distribution and diversification, international pressure, and declining hegemony of the strong power. Events in Honduras …

Self-Esteem And Perceived Barriers To And Benefits Of Exercise Among Physically Active And Non-Physically Active College Students, Barbara Brown Bonheur

Ellmer School of Nursing Theses & Dissertations

The purpose of this exploratory study was to examine differences in self-esteem, perceived benefits of and perceived barriers to exercise between exercisers and non-exercisers and to determine if relationships existed between self-esteem, perceived benefits of exercise and perceived barriers to exercise, that could explain participation in regular aerobic exercise. A sample of 105 university students completed four questionnaires. The level of social desirability present in participant responses was also measured. Five hypotheses were tested. Utilizing t-tests, a significant difference was found between exercisers and non-exercisers on self-esteem, perceived benefits of exercise, and perceived barriers to exercise. The three variables (self-esteem, …

Cognitive, Retention And Transfer Of Learning Consequences Of Computer Assisted Instruction And Videotape Instruction With Registered Nursing Students, Linda Mccormack-Miller

Ellmer School of Nursing Theses & Dissertations

The purpose of this study was to compare the effects of Computer Assisted Instruction (CAI) and Videotape instruction on cognitive, transfer and retention learning consequences of RN students pursuing a Bachelor of Science degree in nursing. The sample consisted of 18 registered nurses who were enrolled in a sophomore level physical assessment course. The research design was a pretest-posttest experimental design. Mastery of Learning Theory and Transfer of Learning Theory provided the theoretical framework for this study. The Mann Whitney U Test, significant at P(.05, was performed to test for significant differences between the groups on the dependent variables. The …

Performance Modeling And Enhancement For The Atamm Data Flow Architecture, Sukhamoy Som

Electrical & Computer Engineering Theses & Dissertations

Algorithm To Architecture Mapping Model (ATAMM) is a new marked graph model from which the rules for data and control flow in a homogeneous, multicomputer, data flow architecture may be defined. This research is concerned with performance modeling and performance enhancement for periodic execution of large-grain, decision-free algorithms in such an ATAMM defined architecture. Performance measures and bounds are established. Algorithm transformation techniques are identified for performance enhancement and reduction of computing element requirements. Operating strategies are developed for optimum time performance and for sub-optimum time performance under limited availability of computing elements. An ATAMM simulator is used to test …

Population Variation In The Mitochondrial-Dna Of Two Marine Organisms: The Hard Shell Clam Mercenaria Spp. And The Killifish, Fundulus Heteroclitus, Bonnie Lynn Brown

OES Theses and Dissertations

The two major topics are covered in this dissertation: the integration of molecular genetic tools with applied aquacultural research and short-term evolutionary dynamics. The first study investigated the extent of geographic differentiation of native clam stocks along the U.S. east and Gulf coasts. Clam mitochondrial DNA (mtDNA) demonstrated size polymorphism (16.5-19.0 kb) and restriction site heteroplasmy. Size heteroplasmic individuals occurred at a frequencies of 0-89% in clam populations. Restriction site heteroplasmy occurred in 12% of the 317 individuals assayed. Results of the study indicated that although harbouring a wealth of genetic variation, clams from northern regions were similar and lacked …

Optimal Row-Column Designs For Correlated Errors And Nested Row-Column Designs For Uncorrelated Errors, Nizam Uddin

Mathematics & Statistics Theses & Dissertations

In this dissertation the design problems are considered in the row-column setting for second order autonormal errors when the treatment effects are estimated by generalized least squares, and in the nested row-column setting for uncorrelated errors when the treatment effects are estimated by ordinary least squares. In the former case, universal optimality conditions are derived separately for designs in the plane and on the torus using more general linear models than those considered elsewhere in the literature. Examples of universally optimum planar designs are given, and a method is developed for the construction of optimum and near optimum designs, that …

An Experimental Study Of Dewatering Of Alum Sludge, Uday G. Kelkar

Civil & Environmental Engineering Theses & Dissertations

The use of aluminum sulfate (Alum) as a coagulant for treating surface water was introduced in 1884. When this salt is added to water, the aluminum Ion hydrolyzes by reaction that consumes alkalinity in water. The gelatinous hydroxide thus formed in the reaction, carries suspended material with it as it settles. In addition, however, it is likely that positively charged hydroxyl-bridge dimmers and higher polymers are formed which interact specifically with the colloidal particles, bringing about coagulation. These gelatinous floes settle by gravity, called sludge, consists of relatively large quantities of suspended and colloidal inorganic and organic materials.

The disposal …

Study Of Direct Semiconductor Materials For An Optically Controlled Switch, Sung Taek Ko

Electrical & Computer Engineering Theses & Dissertations

A model for a bulk GaAs photoconductive switch has been developed and solved to determine the performance of the device in closing and opening switch applications. The GaAs material has been characterized by deep level transient spectroscopy (DLTS). Two electron traps (EL2 and EL5) and one hole trap (Cu_B} have been detected and were included in the model. Simulation studies are performed on several GaAs switch systems composed of different combinations and density of deep levels to investigate the influence of deep traps in a photoconductive switch system. The electron occupancy of each deep trap is traced in …

Task-Hemispheric Integrity Effect: Level Of Task Difficulty And Mental Workload In A Dual Task, Nancy E. Hite

Psychology Theses & Dissertations

The task-hemispheric integrity effect states that when a spatial and verbal task must be time-shared, superior performance would be obtained when the same hemisphere that processes information also controls the hand used to respond. The effect of increasing the level of task difficulty on an unstable tracking task on the concurrent performance of a dichotic listening task was investigated. The results indicated that performance on the unstable tracking task significantly deteriorated as task difficulty level increased in both single- and dual-task conditions. However, performance on both the unstable tracking task and the dichotic listening task was not influenced by hand …

Arctic Leverage: Canadian Sovereignty And Security, Nathaniel French Caldwell Jr.

Graduate Program in International Studies Theses & Dissertations

In 1987 the Canadian government recognized that in order to be a major player in collective security with the United States and NATO, it would have to make a significant contribution to the common defense. However. since Canada could not hope to outspend the larger powers, its contribution would have to be leveraged by control of a strategic piece of real estate -- the Canadian Arctic. The major program to enhance Canadian control of the Arctic would be the acquisition of ten-to-twelve nuclear attack submarines. That submarine force was sold to the public and Parliament as a means to enhance …

A Classification Approach For Automated Reasoning Systems--A Case Study In Graph Theory, Rong Lin

Computer Science Theses & Dissertations

Reasoning systems which create classifications of structured objects face the problem of how object descriptions can be used to reflect their components as well as relations among these components. Current reasoning systems on graph theory do not adequately provide models to discover complex relations among mathematical concepts (eg: relations involving subgraphs) mainly due to the inability to solve this problem. This thesis presents an approach to construct a knowledge-based system, GC (Graph Classification), which overcomes this difficulty in performing automated reasoning in graph theory. We describe graph concepts based on an attribute called Linear Recursive Constructivity (LRC). LRC defines classes …

Isolation And Partial Characterization Of Basic, Sperm-Specific, Nuclear Proteins In The Dog And Hampster, Richard William Hall

Biological Sciences Theses & Dissertations

The purpose was to determine whether dogs and hamsters contain the same sperm-specific protamine and testis specific proteins (TP) as other eutherian mammals previously studied. The proteins (protamine and TPs) were isolated from spermatids and mature spermatozoa, and were subjected to electrophoresis in an acid-urea, polyacrylamide gel system according to the procedure of Panyim and Chalkley (1962). The results indicated that, regardless of the anatomical location of sperm acquisition, acid precipitation technique, or denaturing agents used, epididymal and testicular samples from both the dog and hamster contained protamine in elongated spermatids and mature spermatozoa. The protamines from dogs and hamsters …

The Peaceful Resolution Of Norfolk's Integration Crisis Of 1958-1959, Nancy Parker Ford

History Theses & Dissertations

In 1958 Norfolk experienced one of the most serious crises in its long history when six of its public secondary schools were closed by the governor. The closings were a result of Virginia's massive resistance program and forced 10,000 students to seek alternative education for five months or abandon their education entirely. Interviews with major participants in the crisis as well as investigation of newspaper accounts and editorials, personal papers of participants, city and School Board documents, and major works on the period reveal the factors involved in Norfolk's peaceful approach to integration. A comparison with the situation in Little …

Experimental Study Of Pressure And Heating Rate On A Swept Cylindrical Leading Edge Resulting From Swept Shock Wave Interference, Christopher E. Glass

Mechanical & Aerospace Engineering Theses & Dissertations

An experimental study of the effects of leading edge sweep on surface pressure and heat transfer rate for swept shock wave interference is presented. This study was conducted as a cooperative agreement between NASA Langley Research Center and Calspan-University of Buffalo Research Center. Experimental tests were conducted in the Calspan 48-inch Hypersonic Shock Tunnel at a nominal Mach number of 8, nominal unit Reynolds number of 1.5 x 10⁶ per foot, leading edge and incident shock generator sweep angles of 0^o, 15^o, and 30^o, and incident shock generator angle-of-attack fixed at 12.5^{o …}

A Comparison Of Traditional And Non-Traditional Women's Preferences For Family Oriented Vs. Career Oriented Men, Lee M. Handeland

Psychology Theses & Dissertations

One hundred sixty two female university students were divided into two groups according to their level of traditionality as measured by the Attitude Toward Women Scale. They were shown a photograph of a moderate to high attractive male along with a short description identifying the male as having either a high-career/low-family orientation, or a low-career/high-family orientation, and asked to report their degree of preference for this target. Analysis found significant main effects for traditionality of the subjects, career/family orientation of the targets, and an interaction of traditionality of the subjects and attractiveness of the targets. Further analysis indicated the presence …

Hypoxanthine-Induced Differentiation Of Cultured Human Leukemia Cells, Gayle Jennette Singleton

Chemistry & Biochemistry Theses & Dissertations

Human cultured leukemia cells appear to have a decreased amount of inosine in their tRNA. When cells with inosine deficient tRNA are placed in a hypoxanthine fortified media, they incorporate hypoxanthine into their tRNA by the action of the enzyme tRNA-hypoxanthine ribosyl transferase. This generates the nucleoside inosine in the tRNA. The cultured human leukemia cell lines, CCRF-CEM, HL-60, and HGPRT(-) HL- 60, incorporate hypoxanthine into their tRNA, as determined by tRNA isolation, hydrolysis, and HPLC analysis. Hypoxanthine treatment dramatically inhibited cell growth in conjunction with partial induction of differentiation in the CCRF-CEM, HL-60, and HGPRT ( - ) HL-60 …

Transient Hot-Film Sensor Response In A Shock Tube, Kelly Ryan Ortgies

Mechanical & Aerospace Engineering Theses & Dissertations

Shock tube experiments have been performed to determine the response of a hot-film sensor, mounted flush on the side-wall of a shock tube, to unsteady flow behind a normal shock wave. The present experiments attempt to isolate the response of the anemometer due only to the change in convective heat transfer at the hot-film surface. The experiments, performed at low supersonic shock speeds in air, are described along with the data acquisition procedure. The change in convective heat transfer i s deduced from the data and the results are compared with those from transient boundary-layer theory and another set of …

Literary Visions Of Edward Ii And Isabella Of France, Dana L. Sample

Institute for the Humanities Theses

The historical Edward II and Isabella of France do not always resemble the literary Edward and Isabella. Chronicles written after their deaths produced romances about their lives that to this day have colored historical scholarship. Other literature in the form of plays and novels have also been responsible for nurturing legends about Edward and Isabella. This thesis examines first the contemporary chronicles and government records in order to establish some facts about the ill-fated king and queen; then it analyzes the romances and the media that produced them, in an effort to test their reliability. Although some of the legends …

The Effects Of Nonlinearities On The Optimal Design Of Forced Vibrating Beams, Cheryl Celestine Jackson

Mechanical & Aerospace Engineering Theses & Dissertations

The optimal design of a beam under harmonic excitations is formulated and solved numerically for linear and nonlinear forced vibration theories. The beam has a nonuniform cross-sect ion, whose thickness can change during the optimization procedure. Based on the numerical results, for the given input frequency range, the linear vibration theory produces a more conservative design than the nonlinear vibration theory.

The analytical formulation for both theories is presented. For the linear case, a mean case is defined for the self-weight on a beam, and an alternating case is defined for input forcing frequencies which cause fatigue variations on a …

Low Speed Flowfield Characterization By Infrared Measurements Of Surface Temperatures, Ehud Gartenberg

Mechanical & Aerospace Engineering Theses & Dissertations

An experimental program was aimed at identifying areas in low speed aerodynamic research where infrared imaging systems can make significant contributions. Implementing a new technique, a long electrically heated wire was placed across a laminar jet. By measuring the temperature distribution along the wire with the IR imaging camera, the flow behavior was identified. Furthermore, using Nusselt number correlations, the velocity distribution could be deduced. The same approach was used to survey wakes behind cylinders in a wind-tunnel. This method is suited to investigate flows with position dependent velocities, e.g., boundary layers, confined flows, jets, wakes and shear layers. It …

Evidence For The Role Of Ecdysteroids In The Genital Sex Pheromone Of Two Species Of Hard Ticks, Dermacentor Variabilis (Say) And Dermacentor Andersoni Stiles, Demar Taylor

Biological Sciences Theses & Dissertations

Neutering of part-fed females virtually eliminated copulatory behavior in Dermacentor variabilis and D. andersoni males. Extracts from the anterior reproductive tracts (ART) of part-fed (7 days) females restored the male copulatory behavior in conspecific neutered females, suggesting the presence of a genital sex pheromone (GSP). Similar extracts from unfed females did not restore the behavior, suggesting that the pheromone was produced during feeding. Perception of the GSP by sensillae on the male cheliceral digits was confirmed by electrophysiological techniques.

Ecdysteroids, specifically ecdysone and 20-OH-ecdysone were shown to be present in the anterior reproductive tracts in excess of amounts that could …

Corrigendum, John A. Adam

Mathematics & Statistics Faculty Publications

No abstract provided.

Fixed Point Theorems For Compatible Multi-Valued And Single-Valued Mappings, Hideaki Kaneko, Salvatore Sessa

Mathematics & Statistics Faculty Publications

The notion of compatibility for point-to-point mappings recently defined by Jungck is generalized to include multi-valued mappings. This idea is used to establish a fixed point theorem for a generalized contractive multi-valued mapping and a single-valued mapping.

Weak Bipolarizable Graphs, Stephan Olariu

Computer Science Faculty Publications

We characterize a new class of perfectly orderable graphs and give a polynomial-time recognition algorithm, together with linear-time optimization algorithms for this class of graphs.

The Strong Perfect Graph Conjecture For Pan-Free Graphs, Stephan Olariu

Computer Science Faculty Publications

A graph G is perfect if for every induced subgraph F of G, the chromatic number χ(F) equals the largest number ω(F) of pairwise adjacent vertices in F. Berge's famous Strong Perfect Graph Conjecture asserts that a graph G is perfect if and only if neither G nor its complement G contains an odd chordless cycle of length at least five. Its resolution has eluded researchers for more than twenty years. We prove that the conjecture is true for a class of graphs which strictly contains the claw-free graphs.

A New Conjecture About Minimal Imperfect Graphs, H. Meyniel, Stephan Olariu

Computer Science Faculty Publications

H. Meyniel proved that in every minimal imperfect graph, every pair of vertices is joined by a chordless path containing an odd number of edges. We conjectured that in every minimal imperfect graph, every pair of vertices is joined by a path containing an even number of edges. We give an equivalent version of this new conjecture.

Permanganate Colorimetric Rapid Method For Chemical Oxygen Demand In Seawater, Myung Zoon Czae, Taekee Hong, Myung Hoon Kim

Chemistry & Biochemistry Faculty Publications

No abstract provided.