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Articles 3031 - 3060 of 5172
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A Spatial Optimization Approach To Watershed Water Quality Management: A Case Of The Opequon Watershed, Wilbert Karigomba
A Spatial Optimization Approach To Watershed Water Quality Management: A Case Of The Opequon Watershed, Wilbert Karigomba
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Opequon Creek watershed is located in northern VA and the eastern panhandle of WV. Currently, the main creeks in the watershed do not meet VA or WV state water quality standards for recreational uses and aquatic life. In both states, the creeks are listed as impaired due to high levels of nutrients, bacteria, benthic and biologic impairment. The Opequon Creek is part of the upper Potomac River watershed, and ultimately impacts water quality in the Chesapeake Bay watershed. The main aim of this study was to develop a methodology that can be used to reduce nutrient loadings entering the …
Route And Grade Sensitive Modeling Of Fuel Efficiency And Emissions For Diesel Buses, Abm Siddiqur Rahman Khan
Route And Grade Sensitive Modeling Of Fuel Efficiency And Emissions For Diesel Buses, Abm Siddiqur Rahman Khan
Graduate Theses, Dissertations, and Problem Reports (ETD)
The study first analyzed the characteristics of twenty-three chassis duty cycles to determine the most important parameters that affected FC and emissions. The analysis showed that cycle properties such as standard deviation of average speed, percentage of idle, characteristic acceleration, kinetic intensity, and stops per unit distance were closely related with cycle average speed. A cycle with low average speed contained stop-and-go behavior, with multiple accelerations and decelerations, whereas a high vehicle speed cycle was steadier. In this way, average speed was found to be inter-related to other cycle properties.;The experimental data were collected on a subset of twenty-three test …
The Case Of Uneven Development In Palestine: An Investigation Of Scalar Fix As An Act Of Dispossession, Sandra Lange
The Case Of Uneven Development In Palestine: An Investigation Of Scalar Fix As An Act Of Dispossession, Sandra Lange
Graduate Theses, Dissertations, and Problem Reports (ETD)
Israel's assault on Gaza in December 2008 brought one of the world's most long-standing and hotly debated issues to the fore: the conflict between Israel and Palestine. Despite numerous diplomatic efforts to negotiate peace, the hostilities between the two parties continue. One of the fundamental obstacles to peace has been the highly uneven development between Israel and Palestine, caused primarily by Israel's continuous dispossession of Palestinian rights to land, water and sovereignty. In order to further our understanding of this phenomenon, this thesis sets out to examine processes of dispossession are carried out. The study therefore draws on the geographical …
Development Of A Software Tool For Reliability Estimation, Chihui Li
Development Of A Software Tool For Reliability Estimation, Chihui Li
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis presents Version 2.0 of Software Tool for Reliability Estimation (STORE 2.0). It expands on the work done by Parekh [1] by revising the algorithm for tie-set and cut-set calculation, by including fault tree reliability analysis, by analyzing state dependent system, and by integrating component and system reliability analysis.;This thesis also presents an approach to the simplification of complex systems by collapsing series and parallel components into a sub-system. The approach was illustrated on an example described by Nelson et al. [2]. The example had 16 components resulting in ten cut-sets and fifty five tie-sets. Upon simplification, the problem …
Performance Evaluations Of Latex-Modified And Silica Fume Modified Concrete Overlays For Bridge Decks, Sathish Kumar Raju Konduru
Performance Evaluations Of Latex-Modified And Silica Fume Modified Concrete Overlays For Bridge Decks, Sathish Kumar Raju Konduru
Graduate Theses, Dissertations, and Problem Reports (ETD)
Most of the concrete bridge decks in the cold regions undergo severe reinforcement corrosion due to the transport of chloride ions within the concrete by application of deicing salts on bridge decks in the winter. As a result, protective concrete overlays of about 2-inch thickness are applied on bridge decks. Concrete overlays provide: (1) protection against heavy traffic and the further infiltration of the chloride ions; (2) skid resistance surface; and (3) uniform appearance to extend the service life of bridge decks. Despite these advantages, concrete overlays undergo premature delaminations, edge curling, and corner lifting due to expansion/shrinkage of concrete, …
Random Knn Modeling And Variable Selection For High Dimensional Data, Shengqiao Li
Random Knn Modeling And Variable Selection For High Dimensional Data, Shengqiao Li
Graduate Theses, Dissertations, and Problem Reports (ETD)
High dimensional data is widely available in bioinformatics, chemometrics and other applications. For example, in gene expression experiments, tens of thousands of genes are probed. Phenotype data may be clinical data such as tumor types, or quantities measuring biological characteristics of a subject. While such high dimensional data can be readily generated, successful analysis and modeling of these data is highly challenging.;Random KNN, as proposed in this dissertation, is a novel generalization of traditional nearest-neighbor modeling. Random KNN consists of an ensemble of base k nearest-neighbor models, each taking a random subset of the input variables. A theoretical and empirical …
Insomnia Symptoms, Nightmares And Suicidal Ideation In A University Sample, Michael R. Nadorff
Insomnia Symptoms, Nightmares And Suicidal Ideation In A University Sample, Michael R. Nadorff
Graduate Theses, Dissertations, and Problem Reports (ETD)
Previous research has demonstrated a link between insomnia symptoms, nightmares, and suicidal ideation. The purpose of this study was to investigate whether insomnia symptoms and nightmares were related to suicidal ideation independent of each other. Further, the study aimed to determine whether suicidal ideation and nightmares were related with suicidal ideation independent of the symptoms of anxiety, depression, and PTSD. The study consisted of 583 undergraduate students at West Virginia University. Results indicated that both nightmares (beta = .054 (SE = .008), p > .01) and insomnia symptoms (beta = .045 (SE = .009), p > .01) were related to suicidal ideation, …
Examining The Role Of Entrepreneurship In Economic Development In Appalachia, Maribel N. Mojica
Examining The Role Of Entrepreneurship In Economic Development In Appalachia, Maribel N. Mojica
Graduate Theses, Dissertations, and Problem Reports (ETD)
Increasing uncertainty in the world economy has created challenges for regions to pursue development strategies to achieve economic growth. Globalization, increased marketing integration, and the advent of new technologies led to approaches from traditional industrial recruiting to less traditional approaches. Among these latter approaches is the increased importance of entrepreneurship for creating economic growth through establishment of new firms or growth from established firms. Exploring the characteristics of entrepreneurship and its contributions to the local economy can help develop a map for designing specific development policies for Appalachia.;The main objective of the study is to determine the relationship between regional …
Essays On The Impact Of Market Information On Stock Markets: R&D, Patents And Money Illusion, Kwasi Osei-Yeboah
Essays On The Impact Of Market Information On Stock Markets: R&D, Patents And Money Illusion, Kwasi Osei-Yeboah
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation identifies patents and R&D expenditures as firm-level information variables, and investigates how they affect the pricing of assets in the stock market. In the first essay, the question as to whether patents and R&D represent adverse selection risk is investigated. Firms investing in patents and R&D may present an uncertain outcome for investors who do not have the privilege of insider information. This may increase the adverse selection cost for uninformed investors. For the uninformed investor to hold stocks with more private information, he must be compensated for taking on more firm characteristic risk. The empirical results show …
Economic Benefits Of The National Cooperative Soil Survey Program, Archana Pradhan
Economic Benefits Of The National Cooperative Soil Survey Program, Archana Pradhan
Graduate Theses, Dissertations, and Problem Reports (ETD)
The National Cooperative Soil Survey (NCSS) is the primary source of information on the soil resources in the U.S. The information provided by the NCSS program has played a significant and important role in diverse fields. This study estimates the net benefits of the information provided by the soil survey program to the production of selected crops. Benefit estimates are based on relative productivity gains related to the provision of soil information at the county level. The estimated value of increased crop yields less estimated soil survey production costs provides a lower-bound estimate of the total economic benefits of the …
How One School Implements And Experiences Ohio's Value -Added Model: A Case Study, David Quattrochi
How One School Implements And Experiences Ohio's Value -Added Model: A Case Study, David Quattrochi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Ohio made value-added law in 2003 and incorporated value-added assessment to its operating standards for teachers and administrators in 2006. Value-added data is used to determine if students are making a year's growth at the end of each school year. Schools and districts receive a rating of "Below Growth, Met Growth, or Above Growth" on the state report card.;Value-added data produces valuable information that can be utilized by teachers and administrators for school improvement efforts. This case study examines how one school implemented and experienced Ohio's Value-added model. Few, if any, case studies exist on this topic. The study included …
Risk Analysis In Biometric-Based Border Inspection System, Mayra A. Sacanamboy Franco
Risk Analysis In Biometric-Based Border Inspection System, Mayra A. Sacanamboy Franco
Graduate Theses, Dissertations, and Problem Reports (ETD)
The main goal of a Border Inspection System is to prevent the entry of individuals who pose a threat to a country. The entry of just one of these persons could have severe consequences. Nevertheless, performing a lengthy border inspection is not possible, given that 240,737 international passengers enter the country in an average day [5]. For this reason, the primary inspection is performed using biometrics traits and information flow processes that have a low false acceptance rate and have a high throughput.;This thesis uses the analytic modeling tool called LQNS (Layered Queueing Network Solver) to solve open models for …
Choice Between Schedules Of Reinforcement With And Without Response-Pacing Requirements, Leigh Schrimpf
Choice Between Schedules Of Reinforcement With And Without Response-Pacing Requirements, Leigh Schrimpf
Graduate Theses, Dissertations, and Problem Reports (ETD)
Differential-reinforcement-of-low-rate (DRL) and differential-reinforcement-of-high-rate (DRH) schedules specify a certain pace of responding eligible for reinforcement. The present study assessed the value of a paced schedule of reinforcement using a concurrent-chains schedule. Pigeon's pecks on the left and right initial-link keys led to one of two terminal-link VI 60-s schedules, programmed on the center key. Completion of a terminal-link schedule always led to access to grain. The value of a terminal-link schedule was measured by the initial-link choice proportions. In the baseline, pecks on either initial-link key produced access to one of two unpaced terminal-link schedules every 60 s, on average. …
The Effect Of Attentional Bias On Suggestibility, Elizabeth E. Stacom
The Effect Of Attentional Bias On Suggestibility, Elizabeth E. Stacom
Graduate Theses, Dissertations, and Problem Reports (ETD)
Research implies that individuals with high anxiety levels may be more accurate in response to misleading questions when compared to individuals with low anxiety levels (Ridley & Clifford, 2004; Ridley, Clifford, & Keogh, 2002). This effect may be because individuals with high anxiety levels demonstrate an attentional memory bias toward threatening stimuli. The present study investigated whether a high versus low attentional bias affects suggestibility. Seventy participants completed a visual probe task to measure attentional bias. Next, participants were presented with 11 threatening pictures. Each picture was followed by a distractor task. Participants were then asked two misleading and two …
Characterizing The Relation Between Depressive Symptoms And Parkinson's Disease In A Sample Of Swedish Twins, Rebecca K. Widoe
Characterizing The Relation Between Depressive Symptoms And Parkinson's Disease In A Sample Of Swedish Twins, Rebecca K. Widoe
Graduate Theses, Dissertations, and Problem Reports (ETD)
Depression commonly co-occurs with Parkinson's disease (PD). Psychosocial stressors and biochemical changes associated with PD have both been implicated in the etiology of depression in PD. The purpose of the current study was to examine whether genetic or environmental influences contribute to the increased risk for depressive symptoms among individuals with PD in a population of twins. Among individuals with PD, 24% endorsed a moderate-severe level of depressive symptoms, and 64% endorsed at least a mild level of depressive symptoms. Case-control results indicated that PD is a significant risk factor for both mild (OR = 3.11, CI = 1.82-5.31) and …
Identification Of Chicken Repeat 1 (Cr1) Elements In Forensically Important Carrion Fly Species And Characterization Of One Such Element Within Sarcophaga Bullata, Michelle Lee Thompson
Identification Of Chicken Repeat 1 (Cr1) Elements In Forensically Important Carrion Fly Species And Characterization Of One Such Element Within Sarcophaga Bullata, Michelle Lee Thompson
Graduate Theses, Dissertations, and Problem Reports (ETD)
Retrotransposons including CR1 (Chicken Repeat 1) elements mobilize in a genome in a way that makes them useful for phylogenetic analysis and species identification. This study was designed to identify lineages of CR1 elements in the genomes of forensically important carrion fly species and to further characterize the one element, Sarcophaga bullata CR1B, though genome walk techniques.;Using conserved oligonucleotide primers, CR1 fragments from several carrion fly taxa were amplified, cloned and sequenced, and the recovered sequences were analyzed to identify different lineages of elements. A variety of retrotransposon families were recovered that exhibit similarity to known retrotransposon families from other …
A Faster Algorithm For The Single Source Shortest Path Problem With Few Distinct Positive Lengths, Matthew D. Williamson
A Faster Algorithm For The Single Source Shortest Path Problem With Few Distinct Positive Lengths, Matthew D. Williamson
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis proposes an algorithm that involves Dijkstra's algorithm to solve the Single Source Shortest Path Problem in a graph where the length of each edge is positive, and the specific case where there is a distinct number of possible lengths. Given a graph where there are n vertices, m edges, and K distinct edge lengths, the proposed algorithm runs in O(m ) time if nK ≤ 2m and O(m log nKm ) time if nK > 2m. The algorithm is tested and compared with some of the fastest algorithms for the Single Source Shortest Path Problem for graphs with arbitrary …
Understanding Emotional Pain: A Preliminary Investigation, Ben Weinstein
Understanding Emotional Pain: A Preliminary Investigation, Ben Weinstein
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to examine the construct of emotional pain, as well as its relation to other affective and sensory states. There were 250 undergraduates who signed into an online data collection mechanism and were randomly assigned to five groups in which they wrote a vignette about a personal experience. Participants who indicated they previously had experienced the situation wrote a personal account about an emotionally painful, physically painful, traumatic, depressing, or joyful situation. Additionally, participants completed questionnaires to describe emotional state, pain descriptions, anxiety sensitivity and possible symptoms of depression and posttraumatic stress disorder associated with …
End -Of -Life Care Training In Medical School: An Examination Of Medical Students' Knowledge, Attitudes, Preparedness To Provide Care, And The Hidden Curriculum., Emily H. Bower
Graduate Theses, Dissertations, and Problem Reports (ETD)
End-of-life (EOL) care discussions between physicians and patients promote positive patient health outcomes (Stewart, 1995). However, medical students receive limited training in EOL care (Sullivan, Lakoma, & Block, 2003). To be able to improve curricula, it is important to understand the current training experience and its effects on student attitudes and behavior. The purpose of the current study was twofold: (1) to examine predictors of self-rated preparation to provide EOL care, and (2) to examine predictors of attitudes about EOL care in a medical student population. Additionally, the moderating effect of “hidden†or informal curriculum on the relation between learning …
Assessment Of Social Anxiety In Early Childhood: Initial Test Construction And *Validation., Daniel B. Chorney
Assessment Of Social Anxiety In Early Childhood: Initial Test Construction And *Validation., Daniel B. Chorney
Graduate Theses, Dissertations, and Problem Reports (ETD)
Social anxiety is experienced across the lifespan, with many individuals reporting symptoms of anxiety and shyness from a very early age in childhood. A number of measures have been designed to assess social anxiety in children, adolescents, and adults, yet little attention has been focused on children below 8 years of age. While some debate exists concerning children's ability to reliably report symptoms of anxiety in early childhood, recent research has indicated that accurate data can be obtained if the measures utilized are developmentally sensitive and not simply downward extensions of measures used to examine social anxiety in adults. Obtaining …
Behavior Of Polymer Modified Concrete With Nanoclay Gfrp Bars., Bala Avinash Varma Mavuleti
Behavior Of Polymer Modified Concrete With Nanoclay Gfrp Bars., Bala Avinash Varma Mavuleti
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recent advances in Polymer Modified Concrete (PMC) have enhanced its use in civil infrastructure. These advances are related to improved properties of adhesion, abrasion resistance, impact and flexural strength, durability, and permeability. Similarly, development of lightweight, high strength to weight ratio, corrosion resistant, electromagnetically transparent FRP bars with better fatigue performance have made them an excellent alternative to conventional steel bars for reinforcing several types of concrete structures. In this study, performance of nanoclay GFRP bar reinforced in PMC evaluated. This evaluation was achieved through flexural beam test, cylinder pull out test, tension test, aging study and scanning electron microscopy …
The Role Of Nadph Oxidase In Blood -Brain Barrier Dysfunction Following Stroke In Aged Rats, Kimberly Kelly
The Role Of Nadph Oxidase In Blood -Brain Barrier Dysfunction Following Stroke In Aged Rats, Kimberly Kelly
Graduate Theses, Dissertations, and Problem Reports (ETD)
Stroke is the leading cause of long-term adult disability and the third leading cause of death in the United States. More that 72% of stroke victims are over the age of 65, yet most studies utilize young animals. Aged rats suffer exacerbated stroke volume and inflammation, as well as worsened functional outcome when compared to young adult rats. While the blood brain barrier (BBB) remains intact with age, it becomes more susceptible to external factors. BBB permeability in the penumbra appears acutely, 20 min after middle cerebral artery occlusion (MCAO) in aged rats. Importantly, BBB permeability is earlier and more …
Federal Recordkeeping And Process Improvement At The Federal Aviation Administration, Shannon C. Mcneal
Federal Recordkeeping And Process Improvement At The Federal Aviation Administration, Shannon C. Mcneal
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to identify methods to improve the acquisition and the recordkeeping process of employee accident data at the Federal Aviation Administration. Two expert focus groups were utilized to discover the existing problems and to propose possible resolutions to the problems. The potential solutions were prioritized by each expert focus group with the use of an individual priority decision worksheet. Most of the potential solutions were feasible, low cost and could possibly be implemented within a year's time. An analysis of the data showed that the three most cost effective and feasible solutions to the data …
The Effect Of A Flaxseed-Oil Enhanced Diet On The Shelf Life And Sensory Characteristics Of Farmed Brook Trout (Salvelinus Fontinalis), Courtney Anne Simmons
The Effect Of A Flaxseed-Oil Enhanced Diet On The Shelf Life And Sensory Characteristics Of Farmed Brook Trout (Salvelinus Fontinalis), Courtney Anne Simmons
Graduate Theses, Dissertations, and Problem Reports (ETD)
The effect of dietary modification with flaxseed-oil (Flax) enhanced feed on the sensory characteristics and shelf life of brook trout fillets was examined. The diets were composed of a commercial feed supplemented with either fish oil (control diet, CD) or Flax (treatment diet).
The Omega-3 Fatty Acid Content Of Krill Protein Concentrate Influences Bioavailability, Tissue Deposition, Peroxidation, And Metabolism In Young Rats, Kayla Marie Bridges
The Omega-3 Fatty Acid Content Of Krill Protein Concentrate Influences Bioavailability, Tissue Deposition, Peroxidation, And Metabolism In Young Rats, Kayla Marie Bridges
Graduate Theses, Dissertations, and Problem Reports (ETD)
Objective. Krill protein concentrate (KPC) has been determined to be a high quality protein for human consumption with the advantage of being a rich source of the omega-3 polyunsaturated fatty acids (o-3 PUFAs), docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA). The o-3 PUFAs in krill are mainly associated with phospholipids, which have been proposed to result in high incorporation of o-3 PUFAs into tissues and to be stable against oxidation. The study objective was to determine bioavailability, tissue deposition, peroxidation, and metabolism of o-3 PUFAs in rats fed KPC.;Methods. Young female Sprague-Dawley rats (n=10/group) were fed ad libitum isocaloric diets …
Urban Planning, Transportation, And Land -Use Planning: The Effects On Attitudes And Political Behaviors, Abraham Goldberg
Urban Planning, Transportation, And Land -Use Planning: The Effects On Attitudes And Political Behaviors, Abraham Goldberg
Graduate Theses, Dissertations, and Problem Reports (ETD)
Public policy decisions made across levels of government have an effect on the way in which cities and city neighborhoods are built and maintained. Places vary in several ways including by the level of diversity or uniformity of the types of available amenities, transportation options, cleanliness, safety, affordability, and the availability of basic services. A growing body of literature, through empirical research, demonstrates that these variations affect several domains of people's lives. Personal health, the natural environment, and social capital have all been linked to characteristics of the built environment and attributes of the public realm. In line with this …
The Influence Of A Challenge Course Based Pre-Orientation's Curriculum Integration On Participants' Perceived Self-Efficacy, Simon J. Grout
The Influence Of A Challenge Course Based Pre-Orientation's Curriculum Integration On Participants' Perceived Self-Efficacy, Simon J. Grout
Graduate Theses, Dissertations, and Problem Reports (ETD)
This present work employed a quasi-experimental study to examine the change of college and academic self-efficacy perception of first year students following their experience upon participation in a Challenge Course Based Orientation Program (CCBOP) covering varying levels of University 101 curriculum integration. In total 68 first year students out of an available 96 participated in the study. Four individual programs were chosen, two were randomly assigned a 'Holistically integrated' treatment (n=37) and the remaining programs were assigned 'Non-integrated' treatment (n=31). All participants completed the College Self-Efficacy Inventory (CSEI), and College Academic Self-Efficacy Scale (CASES) prior to and immediately following the …
Applications Of Ultra Performance Liquid Chromatography (Uplc) And Tandem Mass Spectrometry For The Detection And Quantification Of Cocaine, Amphetamine, And Opiate Derivatives In Human Meconium, Joshua Adam Gunn
Graduate Theses, Dissertations, and Problem Reports (ETD)
Development and validation of ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) methodologies for the purpose of detecting and quantifying common drugs of abuse in human meconium specimens is described. Meconium is the first stool passed by a newborn infant. Meconium formation occurs over several months of gestation and subsequent toxicological analysis of the specimens can be useful for identifying drugs and other xenobiotics indicative of prenatal drug exposure.;Ultra performance liquid chromatography (UPLC) is an emerging analytical technique which draws upon the principles of chromatography to run separations at higher flow rates for increased speed, while simultaneously achieving superior resolution …
The Fate Of Salmonella Tennessee And Salmonella Typhimurium In Peanut Butter Subjected To Electron Beam Irradiation, Andrea Lynn Hvizdzak
The Fate Of Salmonella Tennessee And Salmonella Typhimurium In Peanut Butter Subjected To Electron Beam Irradiation, Andrea Lynn Hvizdzak
Graduate Theses, Dissertations, and Problem Reports (ETD)
Peanut butter and peanut paste products were implicated as the vehicle of contamination in an outbreak of Salmonella Typhimurium that began in September 2008 and in the November 2006 outbreak of Salmonella Tennessee; therefore based on the apparent need for intervention measure, the purpose of this research was to evaluate the effectiveness of non-thermal electron beam irradiation for reduction of Salmonella serovars Tennessee (ATCC 10722) and Typhimurium (ATCC 14028) in creamy peanut butter. Each strain was studied independently. Peanut butter samples were inoculated with approximately 7.0 log CFU/g of Salmonella and exposed to e-beam doses ranging from 0--3.1 kGy. Doses …
Microbial Survival After Isoelectric Solubilization And Precipitation Of Fish Protein, Lancya Lansdowne
Microbial Survival After Isoelectric Solubilization And Precipitation Of Fish Protein, Lancya Lansdowne
Graduate Theses, Dissertations, and Problem Reports (ETD)
Protein wasted by the disposal of fish processing byproducts may be recovered using isoelectric solubilization and precipitation. The protein is dissolved by extreme pH shifts and recovered via precipitation and centrifugation. Microbial safety throughout this process had not yet been evaluated; therefore, the purpose of this study was to determine if Listeria innocua and Escherichia coli would survive extreme pH shifts during the protein recovery process. Fresh rainbow trout were headed, gutted, and minced and then inoculated with 109 CFU/g E. coli ATCC 25922 or filleted and minced and then inoculated with 109 cfu/g of L. innocua. The fish was …