Digital Commons Network^™

Selective Utilization Of Microhabitats By Web-Building Spiders, Kelton D. Welch

Theses and Dissertations--Entomology

Natural enemies are members of complex ecological communities, and their ability to contribute to the biological control of pest organisms is strongly influenced by a convoluted network of ecological interactions with many other organisms within these communities. Researchers must develop an understanding of the mechanisms that shape trophic webs to predict and promote top-down effects of predators. The behavior of predators can have a strong influence on their potential as biological control agents.

Web-building spiders are a useful example organism for the study of natural enemy behavior because of the experimentally tractable nature of their foraging behavior. Specifically, patterns in …

Evaluation Of The Live Release Rate Formula & Implementation: Example Analysis Of The Effects Of Mandatory Spay/Neuter Laws On Intake At Shelters Within Dallas, Tx, Amanda Laskoe

MPA/MPP/MPFM Capstone Projects

It is estimated that shelters spend $1 billion annually dealing with unwanted animals (Frank & Carlisle-Frank, 2007). Approximately six to eight million cats and dogs enter U.S. shelters each year, and three to four million of these animals are then euthanized (HSUS, 2009). These are staggering statistics, yet in the early nineties, euthanasia estimates ranged from seven to seventeen million dogs/cats annually (Frank & Carlisle-Frank, 2011). Such improvements have resulted from a greater understanding of, and resources being dedicated to, the issue. Unfortunately, the rate of decline for euthanasia has slowed because programs have not been accurately targeted toward animal …

What Keeps Us Well? Professional Quality Of Life And Career Sustaining Behaviors Of Music Therapy Professionals, Shane C. Swezey

Theses and Dissertations--Music

Self-care can be seen as not only critical for individual professionals, but also for the growth of the helping professions and the quality of care which clients receive. The purpose of this study was to investigate use of career-sustaining behaviors and the levels of professional quality of life in music therapy professionals. This study investigated research questions regarding use of career sustaining behaviors and levels of professional quality of life, the relationship between these variables, the differences in the use of career sustaining behavior by demographics, and the use of music as a self-care strategy.

An online survey was sent …

Managing Soil Microbial Communities With Organic Amendments To Promote Soil Aggregate Formation And Plant Health, Shawn T. Lucas

Theses and Dissertations--Plant and Soil Sciences

The effects of managing soil with organic amendments were examined with respect to soil microbial community dynamics, macroaggregate formation, and plant physio-genetic responses. The objective was to examine the possibility of managing soil microbial communities via soil management, such that the microbial community would provide agronomic benefits. In part one of this research, effects of three amendments (hairy vetch residue, manure, compost) on soil chemical and microbial properties were examined relative to formation of large macroaggregates in three different soils. Vetch and manure promoted fungal proliferation (measured via two biomarkers: fatty acid methyl ester 18:2ω6c and ergosterol) and also stimulated …

Transformations, Bioavailability And Toxicity Of Manufactured Zno Nanomaterials In Wastewter, Sewwandi Rathnayake

Theses and Dissertations--Plant and Soil Sciences

In order to properly evaluate the ecological and human health risks of ZnO Manufactured nanomaterials (MNMs) released to the environment, it is critical to understand the likely transformation products in the wastewater treatment process and in soils receiving biosolids. To address this critical knowledge gap, we examined the transformation reactions of 30 nm ZnO MNMs in single component and multi-component systems, with phosphate and natural organic matter (NOM). We also assessed the influence of nano ZnO transformation on the bioavailability, and toxicity of ZnO transformation products to Triticum aestivum. The data revealed that ZnO MNMs react with phosphate at …

Influence Of Riparian Buffer Management Strategies On Soil Properties, Amanda A. Gumbert

Theses and Dissertations--Plant and Soil Sciences

The Kentucky Division of Water indicates that agriculture is responsible for 55% of the Commonwealth’s assessed streams not supporting their designated uses. Riparian buffers reduce nonpoint source pollution in agroecosystems by storing and cycling nutrients, stabilizing streambanks, increasing infiltration, and storing water. Specific information regarding riparian buffer management is needed for land managers to maximize buffer effectiveness at reducing agricultural contaminants impairing water quality.

Baseline soil properties (texture, pH, C and nutrients) of the riparian buffer surrounding a tributary of Cane Run Creek in Fayette County, KY were characterized prior to imposing three mowing regimes (intense, moderate, and no mow …

Mapping And Decomposing Scale-Dependent Soil Moisture Variability Within An Inner Bluegrass Landscape, Carla Landrum

Theses and Dissertations--Plant and Soil Sciences

There is a shared desire among public and private sectors to make more reliable predictions, accurate mapping, and appropriate scaling of soil moisture and associated parameters across landscapes. A discrepancy often exists between the scale at which soil hydrologic properties are measured and the scale at which they are modeled for management purposes. Moreover, little is known about the relative importance of hydrologic modeling parameters as soil moisture fluctuates with time. More research is needed to establish which observation scales in space and time are optimal for managing soil moisture variation over large spatial extents and how these scales are …

Role Of 18F-Fdg Pet Scan In Rheumatoid Lung Nodule: Case Report And Review Of The Literature, Christine L. Chhakchhuak, Mehdi Khosravi, Kristine M. Lohr

Internal Medicine Faculty Publications

Flourine-18 fluoro-2-deoxy-glucose (¹⁸F-FDG) positron emission tomography combined with computed tomography (PET/CT) is a useful test for the management of malignant conditions. Inflammatory and infectious processes, however, can cause increased uptake on PET scanning, often causing diagnostic dilemmas. This knowledge is important to the rheumatologist not only because of the inflammatory conditions we treat but also because certain rheumatic diseases impose an increased risk of malignancy either due to the disease itself or as a consequence of medications used to treat the rheumatic diseases. There is an increasing body of evidence investigating the role of PET scans in inflammatory …

Using Gis To Delineate Headwater Stream Origins In The Appalachian Coal-Belt Region Of Kentucky, Jonathan A. Villines

Theses and Dissertations--Biosystems and Agricultural Engineering

Human activity such as surface mining can have substantial impacts on the natural environment. Performing a Cumulative Hydrologic Impact Assessment (CHIA) of such impacts on surface water systems requires knowing the location and extent of these impacted streams. The Jurisdictional Determination (JD) of a stream’s protected status under the Clean Water Act (CWA) involves locating and classifying streams according to their flow regime: ephemeral, intermittent, or perennial. Due to their often remote locations and small size, taking a field inventory of headwater streams for surface mining permit applications or permit reviews is challenging. A means of estimating headwater stream location …

Application Of Swarm And Reinforcement Learning Techniques To Requirements Tracing, Hakim Sultanov

Theses and Dissertations--Computer Science

Today, software has become deeply woven into the fabric of our lives. The quality of the software we depend on needs to be ensured at every phase of the Software Development Life Cycle (SDLC). An analyst uses the requirements engineering process to gather and analyze system requirements in the early stages of the SDLC. An undetected problem at the beginning of the project can carry all the way through to the deployed product.

The Requirements Traceability Matrix (RTM) serves as a tool to demonstrate how requirements are addressed by the design and implementation elements throughout the entire software development lifecycle. …

Automatic Detection Of Abnormal Behavior In Computing Systems, James Frank Roberts

Theses and Dissertations--Computer Science

I present RAACD, a software suite that detects misbehaving computers in large computing systems and presents information about those machines to the system administrator. I build this system using preexisting anomaly detection techniques. I evaluate my methods using simple synthesized data, real data containing coerced abnormal behavior, and real data containing naturally occurring abnormal behavior. I find that the system adequately detects abnormal behavior and significantly reduces the amount of uninteresting computer health data presented to a system administrator.

Automatic Performance Level Assessment In Minimally Invasive Surgery Using Coordinated Sensors And Composite Metrics, Sami Taha Abu Snaineh

Theses and Dissertations--Computer Science

Skills assessment in Minimally Invasive Surgery (MIS) has been a challenge for training centers for a long time. The emerging maturity of camera-based systems has the potential to transform problems into solutions in many different areas, including MIS. The current evaluation techniques for assessing the performance of surgeons and trainees are direct observation, global assessments, and checklists. These techniques are mostly subjective and can, therefore, involve a margin of bias.

The current automated approaches are all implemented using mechanical or electromagnetic sensors, which suffer limitations and influence the surgeon’s motion. Thus, evaluating the skills of the MIS surgeons and trainees …

Recovering Local Neural Tract Directions And Reconstructing Neural Pathways In High Angular Resolution Diffusion Mri, Ning Cao

Theses and Dissertations--Computer Science

Magnetic resonance imaging (MRI) is an imaging technique to visualize internal structures of the body. Diffusion MRI is an MRI modality that measures overall diffusion effect of molecules in vivo and non-invasively. Diffusion tensor imaging (DTI) is an extended technique of diffusion MRI. The major application of DTI is to measure the location, orientation and anisotropy of fiber tracts in white matter. It enables non-invasive investigation of major neural pathways of human brain, namely tractography. As spatial resolution of MRI is limited, it is possible that there are multiple fiber bundles within the same voxel. However, diffusion tensor model is …

Context Aware Privacy Preserving Clustering And Classification, Nirmal Thapa

Theses and Dissertations--Computer Science

Data are valuable assets to any organizations or individuals. Data are sources of useful information which is a big part of decision making. All sectors have potential to benefit from having information. Commerce, health, and research are some of the fields that have benefited from data. On the other hand, the availability of the data makes it easy for anyone to exploit the data, which in many cases are private confidential data. It is necessary to preserve the confidentiality of the data. We study two categories of privacy: Data Value Hiding and Data Pattern Hiding. Privacy is a huge concern …

A Novel Computational Framework For Transcriptome Analysis With Rna-Seq Data, Yin Hu

Theses and Dissertations--Computer Science

The advance of high-throughput sequencing technologies and their application on mRNA transcriptome sequencing (RNA-seq) have enabled comprehensive and unbiased profiling of the landscape of transcription in a cell. In order to address the current limitation of analyzing accuracy and scalability in transcriptome analysis, a novel computational framework has been developed on large-scale RNA-seq datasets with no dependence on transcript annotations. Directly from raw reads, a probabilistic approach is first applied to infer the best transcript fragment alignments from paired-end reads. Empowered by the identification of alternative splicing modules, this framework then performs precise and efficient differential analysis at automatically detected …

Optimization Of The Optical And Electrochemical Properties Of Donor-Acceptor Copolymers Through Functional Group And Side Chain Modification, Mark J. Seger

Theses and Dissertations--Chemistry

Donor-acceptor copolymers have received a great deal of attention for application as organic semiconductors, in particular as the active layers in low-cost consumer electronics. The functional groups grafted to the polymer backbones generally dictate the molecular orbital energies of the final materials as well as aid in self-assembly. Additionally, the side chains attached to these functional groups not only dictate the solubility of the final materials, but also their morphological characteristics. The bulk of the research presented in this dissertation focuses on the synthesis and structure-property relationships of polymers containing novel acceptor motifs. Chapter 2 focuses on the synthesis of …

Uses Of Phage Display In Agriculture: A Review Of Food-Related Protein-Protein Interactions Discovered By Biopanning Over Diverse Baits, Rekha Kushwaha, Christina M. Payne, A. Bruce Downie

Horticulture Faculty Publications

This review highlights discoveries made using phage display that impact the use of agricultural products. The contribution phage display made to our fundamental understanding of how various protective molecules serve to safeguard plants and seeds from herbivores and microbes is discussed. The utility of phage display for directed evolution of enzymes with enhanced capacities to degrade the complex polymers of the cell wall into molecules useful for biofuel production is surveyed. Food allergies are often directed against components of seeds; this review emphasizes how phage display has been employed to determine the seed component(s) contributing most to the allergenic reaction …

Polytopes Arising From Binary Multi-Way Contingency Tables And Characteristic Imsets For Bayesian Networks, Jing Xi

Theses and Dissertations--Statistics

The main theme of this dissertation is the study of polytopes arising from binary multi-way contingency tables and characteristic imsets for Bayesian networks.

Firstly, we study on three-way tables whose entries are independent Bernoulli ran- dom variables with canonical parameters under no three-way interaction generalized linear models. Here, we use the sequential importance sampling (SIS) method with the conditional Poisson (CP) distribution to sample binary three-way tables with the sufficient statistics, i.e., all two-way marginal sums, fixed. Compared with Monte Carlo Markov Chain (MCMC) approach with a Markov basis (MB), SIS procedure has the advantage that it does not require …

Academic Support Of Division I Head Coaches: Perceptions Of Student-Athletes, Mikaela M. Raddatz

Theses and Dissertations--Educational Policy Studies and Evaluation

Intercollegiate athletics in the United States have continuously become more commercialized, pressuring athletics departments and coaches to produce winning teams. The commanding expectations for successful programs have been thought to take away from the academic mission of colleges and universities, focusing efforts on athletics over academics. This phenomenon has been examined, but the role head coaches play in support of student-athlete academics has yet to be explored.

The purpose of this study is to measure student-athlete perception of academic support from Division I head coaches. Current literature demonstrates the strong influence of coaches on student-athletes, but the effect in the …

The Regional Accreditation Process At Community Colleges: A Case Study Of Effectiveness, Alissa L. Young

Theses and Dissertations--Educational Policy Studies and Evaluation

This companion dissertation reports the findings of applied case study research on four community college organizational units that consistently meet or exceed standard performance measures. In addition, prior ample evidence confirms that performance extended significantly beyond what might be explained by available tangible resources alone. The case study contexts are common in higher education in general: a) an external partnership, (b) an ad hoc team, (c) a traditional, cross-divisional service unit, and (d) a grant-funded student service unit.

Emerging positive organizational theory and research shows promise for revealing performance-influencing phenomena and behaviors that are not adequately represented in standard measures. …

Examining An Adult Education Partnership Through A Positive Organizational Lens, Lewis H. Burke Jr

Theses and Dissertations--Educational Policy Studies and Evaluation

This companion dissertation reports the findings of applied case study research on four community college organizational units that consistently meet or exceed standard performance measures. In addition, prior ample evidence confirms that performance extended significantly beyond what might be explained by available tangible resources alone. The case study contexts are common in higher education in general: a) an external partnership, (b) an ad hoc team, (c) a traditional, cross-divisional service unit, and (d) a grant-funded student service unit.

Emerging positive organizational theory and research show promise for revealing performance-influencing phenomena and behaviors that are not adequately represented in standard measures. …

The Influence Of Race And Socioeconomic Status On Routine Screening Practices Of Physician Assistants, Deshana Ann Collett

Theses and Dissertations--Educational Policy Studies and Evaluation

Health disparities in minorities and those of low socioeconomic status persist despite efforts to eliminate potential causes. Differences in the delivery of services can result in different healthcare outcomes and therefore, a health disparity. Some of this difference in care may attribute to discrimination resulting from clinical biases and stereotyping which may provide a possible source for the persistence of health disparities. Health disparities may occur because the delivery of services at some level is inadequate. Disparities resulting from the quality and quantity of care delivered by a practitioner result in differentiated delivery of healthcare, thus unequal health outcomes. The …

A Positive Approach Toward Unit Functioning In Higher Education, Susan T. Berry

Theses and Dissertations--Educational Policy Studies and Evaluation

This companion dissertation reports the findings of applied case study research on four community college organizational units that consistently meet or exceed standard performance measures. In addition, prior ample evidence confirms that performance extended significantly beyond what might be explained by available tangible resources alone. The case study contexts are common in higher education in general: a) an external partnership, (b) an ad hoc team, (c) a traditional, cross-divisional service unit, and (d) a grant-funded student service unit.

Emerging positive organizational theory and research show promise for revealing performance-influencing phenomena and behaviors that are not adequately represented in standard measures. …

Investigating The Impact Of Interactive Applets On Students’ Understanding Of Parameter Changes To Parent Functions: An Explanatory Mixed Methods Study, Robin R. Mcclaran

Theses and Dissertations--Science, Technology, Engineering, and Mathematics (STEM) Education

The technology principle in the Principles and Standards for School Mathematics (NCTM, 2000) states that technology plays an important role in how teachers teach mathematics and in how students learn mathematics. The purpose of this sequential explanatory mixed-methods study was to examine the impact of interactive applets on students’ understanding of parameter changes to parent functions. Students in the treatment classes were found to have statistically significantly higher posttest scores than students in the control classes. Although the data analysis showed a statistically significant difference between classes on procedural understanding, no statistically significant difference was found with regard to conceptual …

The Effect Of Augmented Reality Treatment On Learning, Cognitive Load, And Spatial Visualization Abilities, Nedim Slijepcevic

Theses and Dissertations--Curriculum and Instruction

This study investigated the effects of Augmented Reality (AR) on learning, cognitive load and spatial abilities. More specifically, it measured learning gains, perceived cognitive load, and the role spatial abilities play with students engaged in an astronomy lesson about lunar phases. Research participants were 182 students from a public university in southeastern United States, and were recruited from psychology research pool. Participants were randomly assigned to two groups: (a) Augmented Reality and Text Astronomy Treatment (ARTAT); and (b) Images and Text Astronomy Treatment (ITAT). Upon entering the experimental classroom, participants were given (a) Paper Folding Test to measure their spatial …

California Turnaround Schools: An Analysis Of School Improvement Grant Effectiveness, Khalil Graham

Theses and Dissertations--Educational Leadership Studies

The purpose of this study was to evaluate the effectiveness of School Improvement Grants (SIGs) in the state of California (CA) in increasing student achievement using the turnaround implementation model. The American Recovery and Reinvestment Act of 2009 (ARRA) included educational priorities focused on fixing America’s lowest achieving schools. SIGs (i.e., up to $2 million per school annually over 3 years) to the nation’s persistently lowest achieving public schools required schools accepting these awards to implement a federally prescribed school-reform model. Of these models, the school turnaround model is the most aggressive and least used. Using data from CA, the …

Support Services And Programmatic Interventions Four-Year Institutions Have In Place To Assist And Graduate Students With Low Academic Credentials: A Mixed Methods Study, Nada El Majzoub

Theses and Dissertations--Educational Leadership Studies

This mixed methods study investigates the influence of student characteristics and institutional support services and interventions on graduation rates. Regression analysis was conducted using a dataset constructed from multiple publically available resources to estimate graduation rates. Regression results showed High School Grade Point Average to be the highest estimator of graduation rates, among other student and institutional characteristics. The results confirmed existing findings on the influence of student pre-college and demographic characteristics on graduation rates for students with academic needs. Content analysis of survey data from office of support service personnel at public four-year institutions shows institutions implement a wide …

Education Policies And Migration Realities: Utilizing A State Longitudinal Data System To Understand The Dynamics Of Migration Choices For College Graduates From Appalachian Kentucky, Charles E. Mcgrew

Theses and Dissertations--Educational Policy Studies and Evaluation

Census data indicates people with higher levels of education are leaving Appalachian Kentucky as they do in other rural areas. Aside from anecdotal information and primarily qualitative community studies, there is little quantitative evidence of the factors which may influence these migration decisions. State policies and regional efforts to increase educational attainment of people in the region have focused on producing more college degrees however may be contributing to the out-migration of those with higher levels of education. The study incorporates community level data with demographic, academic, and employment data from a cohort of 2005-06 college graduates from Appalachian Kentucky. …

Positive Workplace Dynamics: A Qualitative Exploration Of Exceptional Performance In Community College Units, R. Michael Stapleton

Theses and Dissertations--Educational Policy Studies and Evaluation

In this companion dissertation findings are reported of applied case study research on four community college organizational units that consistently meet or exceed standard performance measures. Ample prior evidence confirmed that performance extended significantly beyond what might be explained by available tangible resources alone. The case study contexts are common in higher education in general: a) an external partnership, (b) an ad hoc team, (c) a traditional, cross-divisional service unit, and (d) a grant-funded student service unit.

Emerging positive organizational theory and research shows promise for revealing performance-influencing phenomena and behaviors that are not adequately represented in standard measures. Therefore, …

The Design Of P200: Mensural Quantity And Proportion In The Early Version Of The Art Of Fugue, Joel Thomas Runyan

Theses and Dissertations--Music

The intended structure of Bach's ostensibly unfinished Die Kunst der Fuge has been debated since the work's publication in 1751. This study examines the proportional design of an early version of the work, subsisting in the autograph manuscript (P200) of the early 1740s. As the only complete source extant, P200 and its revisions provide substantial insight into Bach's intentions for the later version of the Art of Fugue.