Digital Commons Network^™

Route Validation Using Radio Frequency Identification, William T. Watson

Theses and Dissertations

In recent years, radio frequency identification (RFID) has been proposed and implemented in a variety of applications where tracking objects, animals or people is desirable. This paper proposes a novel approach to the application of RFID technology in those applications where it is possible to validate a person or an object's passive contact with a given or arbitrary set of fixed points along a predefined route. The notable departure from the typical application of RFID technology is that in this scheme, the transponders are permanently installed while the interrogator is affixed to a person or object that travels the course. …

The Population Genetics Of The Wood Frog, Rana Sylvatica, Across Its Geographic Range, Tina M. Squire

Theses and Dissertations

This study aimed to determine the level of genetic variation across the continental-wide range of the wood frog, Rana sylvatica. Levels of genetic differentiation between sampled populations were investigated as was the possible locations of glacial refugia for this species. DNA microsatellites were used as the genetic marker. This study found significant genetic differentiation across the geographic range of Rana sylvatica that increased with geographic distance. In addition three likely glacial refugia, Alaska, New York and the southern Appalachians, were identified.

A subset of the populations used in the geographic range study was used to investigate the patterns at a …

Social Isolation Meets Technological Innovation: Towards Developing A Model Of Communication Among Parents Who Homeschool, Megan Nicole Tollefson

Theses and Dissertations

The purpose of this study was to understand how a sample of homeschoolers were using blogs. In this study of homeschoolers and their blog use, a content analysis of 25 blogs with entries from September 2006, February 2007, and June 2007 were studied. The subjects were homeschoolers who blogged; 19 were females, three were males, and six did not clearly identify themselves as male or female. Seven themes emerged through a content analysis: resources, succeeding at homeschooling, homeschooling and fun, advice, questioning homeschoolers, current events, and socialization. These themes were verified through a word count listing from the software used …

The Effect Of A Training On Client's Relationship Satisfaction And Awareness Of Domestic Violence, Susan E. Rudolph

Theses and Dissertations

The pui-pose of the current study was to test the effectiveness of a curriculum focused on the prevention and intervention of domestic violence and healthy, nonabusive relationships. A relationship training created by the author was tested in order to assess whether relationship satisfaction was affected by the relationship training, with the expectation that those who have experienced or are experiencing abusive relationships would become more aware of their relationship dissatisfaction. Furthermore, the relationship training was assessed according to the anticipated increase in the experimental group’s knowledge of domestic violence. Pre-test and post-test measures were used to assess relationship satisfaction and …

Built Environment And Rural Women: A Case Study Approach, Jeanine Esther Gangeness

Theses and Dissertations

Obesity is a worldwide concern resulting in disease and disability which disproportionately impacts women and rural populations. Rural women tend to be physically inactive and are at higher risk for obesity. The purpose of this case study was to describe and explain 1) the perceptions of rural women regarding rural built environments conducive to physical activity, and 2) what influences availability, accessibility, acceptability, and maintenance of these built environments for physical activity of rural women. March 2006 through April 2007 data collection occurred in two rural communities with populations of less than 1,000. The ecologic model and feminist underpinnings guided …

Implications Of Introduced Mule Deer On Santa Catalina Island, California : Their Impacts, Population Ecology, And Management, Thad A. Manuwal

Theses and Dissertations

A small group of mule deer were introduced to Santa Catalina Island in the early
1930s. The mule deer population increased through the 1940s and 1950s and remains widespread and abundant today. Large browsing ungulates are not native to Santa Catalina Island and there is concern that nonnative mule deer are damaging endemic trees and shrubs on the island when foraging. This study was designed to develop quantitative information on diets, foraging behavior, movements, and population biology of mule deer on Catalina Island.

Diet analysis indicated mule deer are consuming a wide variety of native and
endemic plants found on …

Acts Of Being: Hamlet And The Philosophy Of Soren Kierkegaard, Michael Brandon Lopez

Theses and Dissertations

This study is specifically concerned with analyzing the existential elements in William Shakespeare's play Hamlet, utilizing as methodology the works of Danish philosopher Soren Kierkegaard.

The aims of this study are chiefly to illuminate the usefulness of existentialism as an important, prescient, and timely methodology for criticism, as well as to reveal the applicability of Kierkegaard's works for literary analysis. There have, prior to this study, been other critical examinations of Shakespeare's work, utilizing the philosophy of Kierkegaard - however, unlike those other works of criticism, this project has undertaken comprehensive analysis of the play, making broad use of Kierkegaard's …

Development Of Photography Curriculum Program: Facilitating The Transition From Academic Theory To Business Practice, John M. Osborne

Theses and Dissertations

Competition for job openings is becoming increasingly difficult for college graduates. According to the Bureau of Labor Statistics (2007), "Photographers can expect keen competition for job openings. The number of individuals interested in positions is much greater than the number of openings" (~27). As a result of this increasing competition, this study is intended to develop a model curriculum for a four-year baccalaureate degree program in photography with a business emphasis. More specifically, this study is aimed at developing curriculum that will enable students to more readily transition from academic theory into business and industrial practice.

In this study, a …

Woody Encroachment In North Dakota Grasslands: Using Predictive Modeling To Examine Key Players And Management Implications, Leigh A. Ciofani

Theses and Dissertations

Woody shrub encroachment is one of the major threats to grasslands, closely connected to other issues such as fire regimes, herbivore grazing patterns, and climate change, and is currently a global trend. Consequences of shrub encroachment can significantly impact many of the ecological characteristics of grasslands, including grassland biogeochemistry and resource availability and biodiversity. Studies conducted on grassland ecosystems have pointed to grassland management, in the form of prescribed burning, grazing, or some combination of the two, as a way to prevent woody encroachment. Prevention of woody encroachment may be particularly important to preserving grasslands, as management may not be …

Malicious Mobile Code Related Experiments With An Extensible Network Simulator, Attila Ondi

Theses and Dissertations

The automated spread of worms such as Code-Red, SQL/Slammer, and Nimda have caused costly problems to computers connected to the Internet. Even users whose machines were not vulnerable to these threats suffered a loss of productivity and experienced great frustration as connectivity and network traffic were negatively impacted during outbreaks. Although the number of new worm attacks reported in the media seems to be declining, it is vital that researchers study the effects of malicious code on the global network to understand how to defend against future threats. The choice of system for studying the spread of worms and viruses …

Scandium Oxide Thin Films And Their Optical Properties In The Extreme Ultraviolet, Guillermo Antonio Acosta

Theses and Dissertations

This study reports on the physical and optical characterization of scandium oxide thin films. Thin films of scandium oxide, 20-40 nm thick, were deposited on silicon wafers, quartz slides, and silicon photodiodes by reactively sputtering scandium in an oxygen environment. These samples were characterized using ellipsometry, high-resolution transmission electron microscopy, scanning transmission electron microscopy, and energy dispersive x-ray analysis. A 28.46 nm thick scandium oxide thin film was measured in the Extreme Ultraviolet (EUV) from 2.7 to 50 nm (459.3 to 24.8 eV) using synchrotron radiation at the Advanced Light Source Beamline 6.3.2 at the Lawrence Berkeley National Laboratory. In …

Trapping, Survival, And Probable Causes Of Mortality Of Chukar Partridge, Aaron Clark Robinson

Theses and Dissertations

We present an efficient and effective method for trapping chukars (Alectoris chukar) on artificial water sources. We compared a B-trap, a prairie chicken (Tympanuchus cupido) walk-in trap, a modified quail recall trap, and a newly designed Utah walk-in-funnel trap. Our Utah funnel trap outperformed standard techniques by more than 65%, and exceeded previous published results by 35%. Use of this method allows researchers and managers the ability to capture large numbers of Chukars relatively efficiently. With appropriate modifications this design is applicable for capturing a variety of bird species using small water developments. Chukars (Alectoris chukar) have been introduced throughout …

Microchip Liquid Chromatography And Capillary Electrophoresis Separations In Multilayer Microdevices, Hernan Vicente Fuentes

Theses and Dissertations

In this dissertation, several microfabricated devices are introduced to develop new applications in the area of chemical analysis. Electrochemical micropumps, chip-based liquid chromatography systems and multilayer capillary electrophoresis microdevices with crossover channels were fabricated using various substrates such as poly(dimethylsiloxane) (PDMS), glass, and poly(methyl methacrylate) (PMMA). I have demonstrated pressure-driven pumping of liquids in microfabricated channels using electrochemical actuation. PDMS-based micropumps were integrated easily with channel-containing PMMA substrates. Flow rates on the order of ~10 µL/min were achieved using low voltages (10 V). The potential of electrolysis-based pumping in microchannels was further evaluated for pressure driven microchip liquid chromatography (LC). …

An Evaluation Of A Low-Cost Uav Approach To Noxious Weed Mapping, Brandon Tyler Jones

Theses and Dissertations

Mapping their location and extent is a critical step in noxious weed management. One of the most common methods of mapping noxious weeds is to walk the perimeter of each patch with a handheld GPS receiver. This is the method used at Camp Williams, a National Guard Bureau training facility in Utah where this study was conducted. It was proposed that a low-cost Unmanned Aerial Vehicle (UAV) that made use of a hobbyist remote control airplane equipped with a Global Positioning System (GPS) receiver and digital camera could be used along with automated post-processing techniques to reduce the cost of …

The Ecology Of Translocated Greater Sage-Grouse In Strawberry Valley, Utah, Rick Joseph Baxter

Theses and Dissertations

Manuscript No. 1 Translocations of greater sage-grouse (Centrocercus urophasianus) have been attempted in 7 states and one Canadian province with very little success. To recover a small remnant population and test the efficacy of sage-grouse translocations, we captured and transported 137 adult female sage-grouse from 2 source populations to a release site in Strawberry Valley, Utah during March-April 2003-2005. The resident population of sage-grouse in Strawberry Valley was approximately 150 breeding birds prior to the release. We radiomarked each female and documented survival, movements, reproductive effort, flocking with resident grouse, and lek attendance. We used Program MARK to calculate annual …

Microfluidic Electro-Osmotic Flow Pumps, John Mason Edwards

Theses and Dissertations

The need for miniaturized, portable devices to separate and detect unknown compounds has greatly multiplied, leading to an increased interest in microfluidics. Total integration of the detector and pump are necessary to decrease the overall size of the microfluidic device. Using previously developed thin film technologies, an electroosmotic flow (EOF) pump was incorporated in a microfluidic liquid chromatography device. An EOF pump was chosen because of its simple design and small size. EOF pumps fabricated on silicon and glass substrates were evaluated. The experimental flow rates were 0.19-2.30 microliters/minute for 40-400 V. The theoretical pump efficiency was calculated along with …

Effects Of Delayed Auditory Feedback On The Bereitschaftspotential, Jennifer L. Johnson

Theses and Dissertations

This study examined the brain electrical activity of normal speakers in a non-delayed auditory feedback (DAF) condition and when experiencing DAF to determine the effect DAF would have on the Bereitschaftspotential (BP). The BP reflects the preparatory state of a person prior to motor execution of an act and can be observed 1500 to 500 ms prior to voluntary movement. The participants in the study included 10 adults with normal speech. Each read a series of 30 sentences, both without DAF and with DAF, while the BP was measured. Results indicate that the BP is present across the scalp in …

Counter-Flow Ion Mobility Analysis: Design, Instrumentation, And Characterization, Nosa Agbonkonkon

Theses and Dissertations

The quest to achieve high resolution in ion mobility spectrometry (IMS) has continued to challenge scientist and engineers in the field of separation science. The low resolution presently attainable in IMS has continued to negatively impact its utility and acceptance. Until now, efforts to improve the resolution have mainly focused on better instrumentation and detection methods. However, since the resolution of IMS is diffusion limited, it makes sense to address this limitation in order to attain high resolution. This dissertation presents a new IMS technique, which utilizes a high electric field and opposing high gas flow velocity with the aim …

The Relationship Between Reported Out-Of-Class English Use And Proficiency Gains In English, Denisa Krizanova Cundick

Theses and Dissertations

This study investigated the relationship of out-of-class English use and proficiency gains. It also explored the relationship of gender, proficiency level and native language and the possible effect of these demographics on out-of-class English use and language gains in English. Though some studies have shown that those who spend more out-of-class time using the target language have higher language gain (Seliger, 1977), other studies have not found this to be true (Day, 1985; Freed 1990; Spada, 1986). Some reasons for the discrepancy in findings may be differences in the length of the time data is collected, samples of study participants …

Integrated Piezoresistive Sensing For Feedback Control Of Compliant Mems, Robert K. Messenger

Theses and Dissertations

Feedback control of MEMS devices has the potential to significantly improve device performance and reliability. One of the main obstacles to its broader use is the small number of on-chip sensing options available to MEMS designers. A method of using integrated piezoresistive sensing is proposed and demonstrated as another option. Integrated piezoresistive sensing utilizes the inherent piezoresistive property of polycrystalline silicon from which many MEMS devices are fabricated. As compliant MEMS structures flex to perform their functions, their resistance changes. That resistance change can be used to transduce the structures' deflection into an electrical signal. This dissertation addresses three topics …

The Effectiveness Of Prophylactic Eye Drops On The Reversal Of Uv-Light Induced Cataracts, Contessa Bly Bowman

Theses and Dissertations

Cataracts are a cloudiness of the lens within the eye which obstructs vision. They are found in many species including rats, dogs, and humans. Vision is hindered where this "cloudiness", made of water build up and broken crystalline, proteins take form. Oculvet is an eye medication, used by veterinarians, containing carnosine as its active ingredient. Topical application of carnosine is reported to be an effective treatment for the prevention and removal of pre-existing cataracts. For this experiment, Sprague- Dawley rats were anesthetized and exposed to ultraviolet radiation, UVB and UVC. They were divided into four groups (n = 32), three …

Development Of The Characteristics Of Science Questionnaire (Csq): Assessing Student Knowledge Of The Utah State Secondary Science Core Intended Learning Outcome 6 On The Nature Of Science, Bradford N. Talbert

Theses and Dissertations

Teaching students about the nature of science is an important and necessary part of secondary science curricula. The Utah State Office of Education has provided specific guidelines called intended learning outcomes (ILOs) to teachers in the state. The ILOs are based on the national standards presented in the Project 2061 publications of the American Association for the Advancement of Science in 1990 and 1993. The ILOs are not tied to any one scientific discipline such as biology or chemistry, but are intended as global statements describing what scientists do and how scientific knowledge is gained. ILO 6 prescribes that students …

Search Techniques For Multi-Objective Optimization Of Mixed Variable Systems Having Stochastic Responses, Jennifer G. Walston

Theses and Dissertations

A research approach is presented for solving stochastic, multi-objective optimization problems. First, the class of mesh adaptive direct search (MADS) algorithms for nonlinearly constrained optimization is extended to mixed variable problems. The resulting algorithm, MV-MADS, is then extended to stochastic problems (MVMADS-RS), via a ranking and selection procedure. Finally, a two-stage method is developed that combines the generalized pattern search/ranking and selection (MGPS-RS) algorithms for single-objective, mixed variable, stochastic problems with a multi-objective approach that makes use of interactive techniques for the specification of aspiration and reservation levels, scalarization functions, and multi-objective ranking and selection. A convergence analysis for the …

Hybrid Micro-Electro-Mechanical Tunable Filter, Edward M. Ochoa

Theses and Dissertations

While advantages such as good thermal stability and processing-chemical compatibilities exist for common monolithic-integrated micro-electro-mechanically tunable filters (MEM-TF) and MEM-tunable vertical cavity surface emitting lasers (MT-VCSEL), they often require full processing to determine device characteristics. Alternatively, the MEM actuators and the optical parts may be fabricated separately, then subsequently bonded. This "hybrid approach" potentially increases design flexibility. Since hybrid techniques allow integration of heterogeneous material systems, "best of breed" compound optoelectronic devices may be customized to enable materials groups to be optimized for tasks they are best suited. Thus, as a first step toward a hybrid (Al_xGa_{1- …}

Student-Athletes And Involvement Theory, Thomas F. J. Iacovone

Theses and Dissertations

The purpose of the study was to better understand the level of involvement student athletes have at Rowan University. The researcher surveyed 99 student athletes at Rowan University during the 2006-2007 academic year. The subjects were administered a survey to measure their level of involvement, as well as their attitudes toward involvement at Rowan University. Surveys were statistically analyzed to determine frequency, percentages, means, standard deviations, and significant correlations between selected demographics and specific involvement activities.

The study provides insight on the relationship between student athletes' academic performance and their level of involvement, as well as insight on relationships between …

Improving Neural Network Classification Training, Michael Edwin Rimer

Theses and Dissertations

The following work presents a new set of general methods for improving neural network accuracy on classification tasks, grouped under the label of classification-based methods. The central theme of these approaches is to provide problem representations and error functions that more directly improve classification accuracy than conventional learning and error functions. The CB1 algorithm attempts to maximize classification accuracy by selectively backpropagating error only on misclassified training patterns. CB2 incorporates a sliding error threshold to the CB1 algorithm, interpolating between the behavior of CB1 and standard error backpropagation as training progresses in order to avoid prematurely saturated network weights. CB3 …

Parallelization Of Ant Colony Optimization Via Area Of Expertise Learning, Adrian A. De Freitas

Theses and Dissertations

Ant colony optimization algorithms have long been touted as providing an effective and efficient means of generating high quality solutions to NP-hard optimization problems. Unfortunately, while the structure of the algorithm is easy to parallelize, the nature and amount of communication required for parallel execution has meant that parallel implementations developed suffer from decreased solution quality, slower runtime performance, or both. This thesis explores a new strategy for ant colony parallelization that involves Area of Expertise (AOE) learning. The AOE concept is based on the idea that individual agents tend to gain knowledge of different areas of the search space …

A Framework For Analyzing And Mitigating The Vulnerabilities Of Complex Systems Via Attack And Protection Trees, Kenneth S. Edge

Theses and Dissertations

Attack trees have been developed to describe processes by which malicious users attempt to exploit or break complex systems. Attack trees offer a method of decomposing, visualizing, and determining the cost or likelihood of attacks. Attack trees by themselves do not provide enough decision support to system defenders. This research develops the concept of using protection trees to offer a detailed risk analysis of a system. In addition to developing protection trees, this research improves the existing concept of attack trees and develops rule sets for the manipulation of metrics used in the security of complex systems. This research specifically …

Multi-Objective Optimization For Speed And Stability Of A Sony Aibo Gait, Christopher A. Patterson

Theses and Dissertations

Locomotion is a fundamental facet of mobile robotics that many higher level aspects rely on. However, this is not a simple problem for legged robots with many degrees of freedom. For this reason, machine learning techniques have been applied to the domain. Although impressive results have been achieved, there remains a fundamental problem with using most machine learning methods. The learning algorithms usually require a large dataset which is prohibitively hard to collect on an actual robot. Further, learning in simulation has had limited success transitioning to the real world. Also, many learning algorithms optimize for a single fitness function, …

Conceptual Mems Devices For A Redeployable Antenna, Virginia Miller

Theses and Dissertations

Micro-Electro-Mechanical Systems (MEMS) are becoming an integral part of our lives through a wide range of applications, including MEMS accelerators for air bag deployment in vehicles, micromirrors in projection devices, and various sensors for chemical/biological applications. MEMS are a key aspect of ever-increasing significance in a myriad of commercial and military applications. Because of this importance, this thesis utilizes MEMS devices that can deploy and retract an antenna suitably sized for placement on an insect or microrobot for communication purposes. A target monopole antenna with a length of 1 mm was used as a test metric. From this requirement, several …