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Two-Step Phase Transition In Snse And The Origins Of Its High Power Factor From First Principles, Antoine Dewandre, Olle Hellman, Sandip Bhattacharya, Aldo H. Romero, Georg K. H. Madsen, Matthieu J. Verstraete Jan 2016

Two-Step Phase Transition In Snse And The Origins Of Its High Power Factor From First Principles, Antoine Dewandre, Olle Hellman, Sandip Bhattacharya, Aldo H. Romero, Georg K. H. Madsen, Matthieu J. Verstraete

Faculty & Staff Scholarship

No abstract provided.

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Signatures Of Four-Particle Correlations Associated With Exciton-Carrier Interactions In Coherent Spectroscopy On Bulk Gaas, D. Webber, B. L. Wilmer, X. Liu, M. Dobrowolska, J. K. Furdyna, A. D. Bristow, K. C. Hall Jan 2016

Signatures Of Four-Particle Correlations Associated With Exciton-Carrier Interactions In Coherent Spectroscopy On Bulk Gaas, D. Webber, B. L. Wilmer, X. Liu, M. Dobrowolska, J. K. Furdyna, A. D. Bristow, K. C. Hall

Faculty & Staff Scholarship

Transient four-wave mixing studies of bulk GaAs under conditions of broad bandwidth excitation of primarily interband transitions have enabled four-particle correlations tied to degenerate (exciton-exciton) and nondegenerate (exciton-carrier) interactions to be studied. Real two-dimensional Fourier-transform spectroscopy (2DFTS) spectra reveal a complex response at the heavy-hole exciton emission energy that varies with the absorption energy, ranging from dispersive on the diagonal, through absorptive for low-energy interband transitions to dispersive with the opposite sign for interband transitions high above band gap. Simulations using a multilevel model augmented by many-body effects provide excellent agreement with the 2DFTS experiments and indicate that excitation-induced dephasing …

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Developing A Smart Proxy For Fluidized Bed Using Machine Learning, Amir Ansari Jan 2016

Developing A Smart Proxy For Fluidized Bed Using Machine Learning, Amir Ansari

Graduate Theses, Dissertations, and Problem Reports (ETD)

Using fossil fuel which has been grown dramatically during the recent century, causes an increase in greenhouse gas emission. The global warming issue pushes the engineers toward the cleaner type of energy like Hydrogen. Coal gasification is one of the cheapest methods to obtain Hydrogen. Coal gasification is a special case of more general problem called fluidized bed. In order to design and optimize a gasification process, a deep understanding of multiphase flow in a gasifier is needed. MFiX is a commercial multi-phase flow simulator which has been used to simulate the gas and solid transport and reaction in the …

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Protecting The Shield: How The Nfl Frames An Organizational Crisis, Mel Anton Jan 2016

Protecting The Shield: How The Nfl Frames An Organizational Crisis, Mel Anton

Graduate Theses, Dissertations, and Problem Reports (ETD)

The National Football League (NFL) is a multi-billion-dollar organization that is constantly utilizing impression management techniques to craft its public image. Currently, the NFL is embroiled in what many refer to as the "concussion crisis." When the NFL discusses this issue, one of the most common impression management techniques used is framing and accounts. This research brings together these two concepts to study this issue. I have analyzed a sample of press releases from the NFL using qualitative content analysis. From this, I have found and defined some common frames used, when they are used, and then used accounts research …

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Anteroposterior Jaw Position And Pharyngeal Airway Morphology In Young Adult Patients: A Cbct Study, Martin C. Avey Jan 2016

Anteroposterior Jaw Position And Pharyngeal Airway Morphology In Young Adult Patients: A Cbct Study, Martin C. Avey

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and Objectives: Much previous attention has been paid in the orthodontic literature to craniofacial skeletal patterns and morphology of the upper airway and their association with obstructive sleep apnea (OSA). However, the majority of 3D airway investigations in recent years have analyzed the relationship of the airway with various anteroposterior (AP) skeletal patterns using traditional 2D cephalometric landmarks and measurements, such as SNA and SNB. The Six Elements of Orofacial Harmony is a diagnostic and treatment philosophy that has attempted to provide a more accurate and clinically relevant determination of the position of teeth and jaws. Element II specifically …

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Investigation Of Relationships Among Consumer Perceptions And Brand Preference In Photoshopped And Non-Photoshopped Fashion Advertisements, Kristina A. Smith Jan 2016

Investigation Of Relationships Among Consumer Perceptions And Brand Preference In Photoshopped And Non-Photoshopped Fashion Advertisements, Kristina A. Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

The use of digital alteration software on fashion models in advertising photographs has been used to promote an ideal standard of beauty for women. In an attempt to differentiate the thin ideal, fashion brand Aerie has vowed to not use digital alteration software to alter the physical characteristics of the models in their advertisements, while other companies such as Victoria's Secret continues to utilize digital alteration techniques on their advertisements. This research examined consumer brand preference using Photoshopped Victoria's Secret and non-Photoshopped Aerie fashion advertisements found from an online source. The purpose of this study was to examine college aged …

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Using Tree-Ring Data To Analyze The Effects Of Volcanic Eruptions On Climate In Inner Asia From 500 Bce To Present, Jennie Zhu Jan 2016

Using Tree-Ring Data To Analyze The Effects Of Volcanic Eruptions On Climate In Inner Asia From 500 Bce To Present, Jennie Zhu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Volcanic eruptions have influenced regional and global climate on annual, interannual, decadal, and multi-decadal time scales. However, past studies have largely focused on the response of global temperature to modern eruptions with the aid of satellite records. This approach limits the number of eruptions that can be studied and restricts our knowledge to relatively small events when compared to the volcanic history of the late Holocene. I used modern climate records to evaluate the effect of recent eruptions on Mongolian climate. I then extended my analysis to the last 2500 years by examining existing and new tree-ring data from Mongolia …

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Effects Of Executive Functioning On False Memory In Children, Pamela Swift Tessier Jan 2016

Effects Of Executive Functioning On False Memory In Children, Pamela Swift Tessier

Graduate Theses, Dissertations, and Problem Reports (ETD)

Misremembering is a common phenomenon in normal human development that has great potential to become problematic, especially in legal situations. The Deese/Roediger--McDermott (DRM; Deese, 1959; Roediger & McDermott, 1995) model has been commonly used in the literature to uncover mechanisms for why these false memories may occur. Children have only recently begun to be investigated using this paradigm. Some related mechanisms in children for false recollection that have yet to be investigated are child executive functioning and socioeconomic status. In the current study, executive functioning was investigated as a potential mechanism for false recollections using a DRM paradigm. Children completed …

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The Association Between Early Dental Visits, Dental Outcomes, And Oral Health-Related Quality Of Life In West Virginia Children, Jennifer Momen Jan 2016

The Association Between Early Dental Visits, Dental Outcomes, And Oral Health-Related Quality Of Life In West Virginia Children, Jennifer Momen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Background and objectives: Early dental visits provide the opportunity to reduce the prevalence of early childhood caries through risk assessment, counseling, and provision of specific preventive measures. Despite the American Academy of Pediatric Dentistry's recommendation that the first dental visit should occur by 1 year of age, many children are not receiving care until much later. Evidence that early dental visits improve dental outcomes is vital to educate parents and health care providers. Hence, this study examined the association between a child's age at the first dental visit and dental outcomes, parents' awareness of the recommendation for the first dental …

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Upscaling Of Sagd Process Using Spectrum-Based Analysis For Heterogeneius Reservoirs, Vahid Mohammadnia Jan 2016

Upscaling Of Sagd Process Using Spectrum-Based Analysis For Heterogeneius Reservoirs, Vahid Mohammadnia

Graduate Theses, Dissertations, and Problem Reports (ETD)

The main objective for this work is to predict the impact of heterogeneity in the rock and fluid properties on the governing equations in modeling of SAGD process. To serve this purpose, a spectrum-based upscaling approach is applied on the governing equations.;A probability-based analysis is used to include heterogeneity in the fluid and rock properties by assigning random perturbation fields to each property. Furthermore, each property is decomposed into the expectation and perturbation values. Heat diffusion and Darcy equations are upscaled by applying Fourier-Stieltjes transform. The upscaled equations embrace the heterogeneity in permeability and thermal diffusivity and can predict the …

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Use Of A Functional Movement Screening Tool To Determine Injury Risk In Collegiate Acrobatics And Tumbling Athletes, Sara E. Spencer Jan 2016

Use Of A Functional Movement Screening Tool To Determine Injury Risk In Collegiate Acrobatics And Tumbling Athletes, Sara E. Spencer

Graduate Theses, Dissertations, and Problem Reports (ETD)

Context: Participation in athletic teams and events can lead to injury. As the difficulty in stunts and acrobatic maneuvers increase so does the risk for injury. With this emerging sport and the skills needed to participate, it is important to identify those athletes at risk. Yet, it is unknown whether a functional screening or proprioceptive tool can be used to predict injury in this population. Objective: The purpose of this study sought to determine if compensatory movement patterns predispose acrobatics and tumbling athletes to injury, and to determine if a functional movement screening (FMS) and Lower Quarter Y Balance Test …

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The Trajectory Of Coping With Trauma: Meaning Making As A Factor In Determining The Trauma Outcome For Combat Veterans, Rachel A. Spero Jan 2016

The Trajectory Of Coping With Trauma: Meaning Making As A Factor In Determining The Trauma Outcome For Combat Veterans, Rachel A. Spero

Graduate Theses, Dissertations, and Problem Reports (ETD)

Specific ways in which an individual makes meaning following a stressful life event have been conceptualized as contributing to the emergence of Posttraumatic Stress Disorder (PTSD). However, little is known about how meaning making impacts the trauma trajectory and how that transition affects the outcomes of PTSD, Posttraumatic Growth (PTG), or resiliency. In this study, 166 combat veterans nationwide completed self-report surveys that were analyzed using a multivariate Structural Equation Modeling (SEM) method to create a model of how PTSD, PTG, and resiliency are impacted based upon meaning making. The results suggest that following a stressful life event, individuals who …

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Pigeons And Humans Time Miscued Intervals, Shrinidhi Subramaniam Jan 2016

Pigeons And Humans Time Miscued Intervals, Shrinidhi Subramaniam

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cues signaling time to reinforcer availability can be highly informative, somewhat informative, or uninformative of the specific time to reinforcement. The purpose of this series of studies was to characterize the functional relation between miscues and pigeon and human response patterns in a peak-interval (PI) procedure. In Experiment 1, pigeons pecked keys to earn food in a cued and miscued PI procedure. Each session consisted of fixed-interval (FI) 2-s and 4-s schedules of food and occasional, 12-s PI trials during which pecks had no programmed consequences. The correlation between visual cues (red or green key light colors) and the schedule …

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Ordinary Sailors: The French Navy, Vichy And The Second World War, Alexander John Upward Jan 2016

Ordinary Sailors: The French Navy, Vichy And The Second World War, Alexander John Upward

Graduate Theses, Dissertations, and Problem Reports (ETD)

After the debacle of the Fall of France in 1940, the one organization that managed to maintain its discipline and functionality virtually intact was the French Navy. This is the story of how subsequently that navy was able to exert a disproportionate influence on the Vichy regime of Marshal Petain. Such influence achieved its apogee between February 1941 and April 1942 when the navy's Commander-in-Chief Admiral Darlan served simultaneously in several of the regime's highest offices. During this period France continued to flirt with the possibility of actively engaging Great Britain in war on the side of Nazi Germany. It …

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Hydroclimatic Assessment Of Changing Climate On Diarrheal Diseases With Reference To Cholera, Fariborz Nasr Azadani Jan 2016

Hydroclimatic Assessment Of Changing Climate On Diarrheal Diseases With Reference To Cholera, Fariborz Nasr Azadani

Graduate Theses, Dissertations, and Problem Reports (ETD)

The association of cholera with the climatic processes is well documented. However the effects of changing climate on occurrence of cholera is not yet evaluated, perhaps due to unavailability of geophysical data and their quantitative linkages with cholera. Global climate models (GCMs) outputs are available at coarse resolution of 200-300km, but the diseases usually occur at 10-15 km, therefore, it is rather challenging to link any GCM outputs with a disease. The goal of this research is to develop algorithms that can link diarrheal diseases with changing climatic conditions. Within this context, cholera is used as a model disease due …

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How College Instructors Use Social Media For Instruction, Benson Njoroge Jan 2016

How College Instructors Use Social Media For Instruction, Benson Njoroge

Graduate Theses, Dissertations, and Problem Reports (ETD)

The use of social media has increased tremendously in recent years with many sectors using it for the purpose of communicating, sharing ideas, gathering information and stating opinions. The use of social media has trickled down into education with instructors using it for teaching and learning. This study used Gagne's Nine Events of Instruction as a framework to investigate the types of social media applications used, and how they are specifically used for instructional purpose in colleges. The study used both qualitative and quantitative methods to analyze data. Results indicated that about 31% of instructors use different social media types …

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Elucidating And Pharmacologically Targeting Secondary Injury Cascades Following Neural Injury, Brandon P. Lucke-Wold Jan 2016

Elucidating And Pharmacologically Targeting Secondary Injury Cascades Following Neural Injury, Brandon P. Lucke-Wold

Graduate Theses, Dissertations, and Problem Reports (ETD)

3.4 million concussions occur each year in the United States. Recent evidence suggests that some of these individuals are susceptible to neurodegenerative disease development following traumatic brain injury. The unknown factor is how acute injury contributes to this degenerative process. A prominent neurotrauma related neurodegenerative disease is chronic traumatic encephalopathy (CTE). CTE is defined by neurofibrillary tau tangles with a perivascular distribution and mood disturbances. In order to elucidate the pathologic changes associated with CTE, it is imperative to utilize adequate preclinical models. We have strategically developed and tested a clinically relevant rodent blast model. The model reliably produces a …

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Perceptions Of The Curriculum For Agricultural Science Education (Case) As Perceived By Agricultural Educators., Lauren Irene Devine Jan 2016

Perceptions Of The Curriculum For Agricultural Science Education (Case) As Perceived By Agricultural Educators., Lauren Irene Devine

Graduate Theses, Dissertations, and Problem Reports (ETD)

The purpose of this study was to determine the perceptions of educators using the CASE curriculum related to the lesson plans, materials and overall courses in the curriculum. The research was also aimed to determine the perceptions of educators on the CASE curriculum as it relates to the total agricultural education model and the attitudes of students' views of the CASE curriculum as perceived by their teachers. The population for this study was 1,021 agricultural educators across the United States who have been trained in CASE and are currently teaching in a high school classroom. The researcher conducted a descriptive …

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Evaluation Of Concavity Compression Mechanism As A Possible Predictor Of Shoulder Muscle Fatigue, Suman Kanti Chowdhury Jan 2016

Evaluation Of Concavity Compression Mechanism As A Possible Predictor Of Shoulder Muscle Fatigue, Suman Kanti Chowdhury

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examined the lived experiences of American Muslim principals who serve in public schools post-9/11 to determine whether global events, political discourse, and the media coverage of Islam and Muslims have affected their leadership and spirituality. The aim of the study was to allow researchers and educators to gain an understanding of the adversities that American Muslims principals have experienced post-9/11 and to determine how to address these adversities, particularly through decisions about educational policy and district leadership. A total of 14 American Muslim school leaders who work in public schools post-9/11 across the United States participated in the …

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The Opinions And Attitudes Of Police Officers To Proposed Changes To Law Enforcement, Jason C. Contessa Jan 2016

The Opinions And Attitudes Of Police Officers To Proposed Changes To Law Enforcement, Jason C. Contessa

Graduate Theses, Dissertations, and Problem Reports (ETD)

The field of policing has recently come under the public scrutiny due to the events surrounding the deaths of several citizens at the hands of police officers. Although not the first time policing has been criticized, the issues have caused the country to become increasingly divided on whether or not American police forces are in need of reform. There has been an overwhelming amount of complaints against law enforcement and suggestions to improve policies. As political and public figures have taken sides and police administration has made statements regarding the issues, the voices of those that would be most affected …

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Understanding Coupling Of Global And Diffuse Solar Radiation With Climatic Variability, Lubna Hamdan Jan 2016

Understanding Coupling Of Global And Diffuse Solar Radiation With Climatic Variability, Lubna Hamdan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Global solar radiation data is very important for wide variety of applications and scientific studies. However, this data is not readily available because of the cost of measuring equipment and the tedious maintenance and calibration requirements. Wide variety of models have been introduced by researchers to estimate and/or predict the global solar radiations and its components (direct and diffuse radiation) using other readily obtainable atmospheric parameters. The goal of this research is to understand the coupling of global and diffuse solar radiation with climatic variability, by investigating the relationships between these radiations and atmospheric parameters. For this purpose, we applied …

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Distribution And Efficacy Of Chemotherapeutics In The Treatment Of Preclinical Brain Metastases Of Breast Cancer, Tori Terrell Hall Jan 2016

Distribution And Efficacy Of Chemotherapeutics In The Treatment Of Preclinical Brain Metastases Of Breast Cancer, Tori Terrell Hall

Graduate Theses, Dissertations, and Problem Reports (ETD)

Brain metastases are a critical, life-threatening problem for women with advanced metastatic breast cancer. Approximately 80% of women with disseminated central lesions are unable to survive the first year after diagnosis. Despite the breakdown of the blood-brain barrier, chemotherapeutics have limited penetration and distribution into brain metastases and are unable to induce cytotoxicity in the tumor. Limiting the development of new treatments for brain metastases of breast cancer, there are no commercially available in vitro models available that accurately model, and mimic the functionality of, the in vivo blood-tumor barrier (BTB). In an attempt to address the aforementioned problem, the …

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Modulation Of Coronary Reactive Hyperemia Through Soluble Epoxide Hydrolase: Role Of Oxylipins And Ppargamma, Ahmad Mahmoud Hanif Jan 2016

Modulation Of Coronary Reactive Hyperemia Through Soluble Epoxide Hydrolase: Role Of Oxylipins And Ppargamma, Ahmad Mahmoud Hanif

Graduate Theses, Dissertations, and Problem Reports (ETD)

Ischemic heart disease (IHD) continues to be a leading cause of morbidity and mortality in increasingly more countries. Function and structural damage to the heart are likely consequences of ischemic insults and may even lead to death. The body's physiological response to ischemia is by increasing nourishment or perfusion to the deprived organ in an attempt to decrease the potential ischemia-induced damage and achieve faster recovery. This reaction to ischemia is termed reactive hyperemia (RH), and in the heart, it is coronary reactive hyperemia (CRH). Epoxyeicosatrienoic acids (EETs) are oxylipins derived from arachidonic acid (AA) and possess distinct cardiovascular benefits, …

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Sensitivity Analysis Of A Relative Navigation Solution For Unmanned Aerial Vehicles In A Gnss-Denied Environment, Jeremy Hardy Jan 2016

Sensitivity Analysis Of A Relative Navigation Solution For Unmanned Aerial Vehicles In A Gnss-Denied Environment, Jeremy Hardy

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cooperative navigation between two or more unmanned aerial vehicles (UAVs) is an important enabling technology for problems such as military reconnaissance, disaster response, and search and rescue. In many of these situations Global Navigation Satellite Systems (GNSS), such as Global Positioning System (GPS), may be unreliable or unavailable due to structural impedance or malicious signal jamming. Therefore, the task of maintaining a reliable relative navigation solution without the use of GNSS is an important need for the aforementioned missions.;To meet this need, this thesis focuses on the relative navigation between two UAVs that are operating in a GNSS-denied environment. In …

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Development Of Engine Activity Cycles For The Prime-Movers Of Unconventional Well Completion, Robert S. Heltzel Jan 2016

Development Of Engine Activity Cycles For The Prime-Movers Of Unconventional Well Completion, Robert S. Heltzel

Graduate Theses, Dissertations, and Problem Reports (ETD)

The US natural gas extraction industry has grown by 25% over the past decade. This has encouraged the well completion industry to utilize produced natural gas to meet power demands previously obtained with diesel fuel. The major "prime-movers" of diesel fuel consumption are over-the-road (OTR) trucks, high horsepower drilling, and high horsepower hydraulic fracturing engines. The US Department of Energy (DOE) recently granted West Virginia University (WVU) funding, under agreement DE-FE0013689, to "Assess Fugitive Methane Emissions Impact Using Natural Gas Engines in Unconventional Resource Development." As part of the funding, WVU was tasked with creating engine activity cycles representative of …

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Somewhat Familiar, Brett Herron Jan 2016

Somewhat Familiar, Brett Herron

Graduate Theses, Dissertations, and Problem Reports (ETD)

My MFA written thesis addresses work completed and shown in a thesis exhibition at West Virginia University as well as significant influences to my studio process. While my focus is printmaking, the work presented in the exhibition consists of several sculptural and photographic pieces. This thesis, along with the supporting exhibition, will address my investigations into extending Minimalism's anonymity and relational aesthetics while adhering to my own predetermined artistic parameters. The work is concerned with observed form and composition along with the transformation of mundane and knowable materials into uncertain sculptures that highlight their physical properties. I emphasize the material …

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Conditioning Thermal Stability And Dose Effects Of Commercially Available Phytase Preparations On Performance And Tibia Mineralization Of Young Broiler Chickens, Victoria B. Homan Jan 2016

Conditioning Thermal Stability And Dose Effects Of Commercially Available Phytase Preparations On Performance And Tibia Mineralization Of Young Broiler Chickens, Victoria B. Homan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Phytases have become a vital part of broiler diets due to their ability to decrease feed cost and potential environmental pollution caused by the use of excessive phosphorus. The objective of the first study was to compare the effects of various inclusions of a Transgenic Phytase Corn (TPC) to a Granulated Bacteria Phytase (GBP) on 21-d broiler performance and tibia mineralization. Treatments varied in non-phytate phosphorus (Negative control (NC) = 0.2, positive control (PC) = 0.4, 0.3, and 0.35), phytase product (TPC or GBP), and phytase dose (500-3000 FTU/kg). A 2x2 factorial analysis was performed with the main effects phytase …

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The Effects Of Controlled Environmental And Physical Factors On The Physiological Responses Of The Handfinger System, John Kaiser Jan 2016

The Effects Of Controlled Environmental And Physical Factors On The Physiological Responses Of The Handfinger System, John Kaiser

Graduate Theses, Dissertations, and Problem Reports (ETD)

Hand injuries account for a leading cause of occupational injuries requiring treatment from United States' hospital emergency departments. These occupational injuries generate a substantial burden on employers in terms of both cost and productivity. Occupational safety gloves are an effective preventive measure of these hand and finger injuries. However, these occupational safety gloves can result in unintended injuries due to factors such as extreme conditions of temperature, relative humidity, and physical demand. The purpose of this study is to collect data on the physiological responses of the hand-finger system and their relationship with these identified factors. The physiological responses measured …

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Two Photon Absorption Laser Induced Fluorescence For Fusion Class Plasmas, Drew B. Elliott Jan 2016

Two Photon Absorption Laser Induced Fluorescence For Fusion Class Plasmas, Drew B. Elliott

Graduate Theses, Dissertations, and Problem Reports (ETD)

Neutral hydrogen particles play an important role in many fusion systems. The edge region of fusion plasmas is strongly influenced by these neutral particles and is of growing importance because of the challenges of plasma material interaction. A two photon absorption laser induced fluorescence diagnostic at West Virginia University has been constructed to measure the local density and velocity distribution of these neutral particles. The diagnostic measures the ground state of hydrogen isotopes by way of two photon absorption from the 1s to 3d state and subsequent single photon emission to the 2 p state. These measurements are absolutely calibrated …

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Compressing Genome Resequencing Data, Aliya Farheen Jan 2016

Compressing Genome Resequencing Data, Aliya Farheen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recent improvements in high-throughput next generation sequencing (NGS) technologies have led to an exponential increase in the number, size and diversity of available complete genome sequences. This poses major problems in storage, transmission and analysis of such genomic sequence data. Thus, a substantial effort has been made to develop effective data compression techniques to reduce the storage requirements, improve the transmission speed, and analyze the compressed sequences for possible information about genomic structure or determine relationships between genomes from multiple organisms.;In this thesis, we study the problem of lossless compression of genome resequencing data using a reference-based approach. The thesis …

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