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Oxygen Transport Kinetics In Solid Oxide Fuel Cell Cathode, Yihong Li
Oxygen Transport Kinetics In Solid Oxide Fuel Cell Cathode, Yihong Li
Graduate Theses, Dissertations, and Problem Reports (ETD)
Solid oxide fuel cells (SOFCs) are energy conversion devices that produce electricity by electrochemically combining a fuel and an oxidant across an ionic conducting oxide electrolyte. As it is regarded as the most efficient and versatile power generation system, SOFCs have attracted more substantial interest in recent years. Oxygen reduction at the cathode is considered as the main rate limiting factor to the performance of the whole system. In this work, experimental study of oxygen transport in single phase and infiltrated cathode materials using electrical conductivity relaxation (ECR) technique are combined with physical modeling to benefit SOFCs cathode improvement.;The conductivity …
Detection And Characterization Of Pyromarkers Of Smoked Drugs Of Abuse, Rona Kiyomi Nishikawa
Detection And Characterization Of Pyromarkers Of Smoked Drugs Of Abuse, Rona Kiyomi Nishikawa
Graduate Theses, Dissertations, and Problem Reports (ETD)
Smoking or inhalation has increased in popularity as the choice route of administration of drugs of abuse amongst drug abusers. Combustion products associated with the smoking event (pyromarkers) of these smoked drugs of abuse can be useful in post mortem toxicological analysis both for investigative and public health applications. A method using analytical pyrolysis was developed to simulate the smoking process used for illicit drugs, which is significantly different than methods used for studies of conventional tobacco smoking, This method was used to identify possible markers associated smoked fentanyl and mixes of heroin and fentanyl. Thermocouple temperature probes were used …
Validation Of The Calgary Symptoms Of Stress Inventory (C-Sosi) For Predicting Adherence To A Stress Reduction Technique, Lauren M. Penwell
Validation Of The Calgary Symptoms Of Stress Inventory (C-Sosi) For Predicting Adherence To A Stress Reduction Technique, Lauren M. Penwell
Graduate Theses, Dissertations, and Problem Reports (ETD)
Stress is a ubiquitous aspect of modern life that has serious effects on mental and physical health. Many stress reduction techniques are currently available to help combat these effects but non-adherence to them is a significant barrier to their overall effectiveness. The aims of the current study were to: 1) validate the Calgary Symptoms of Stress Inventory (C-SOSI), an instrument that classifies one's stress response profile, using traditional psychometric procedures as well as for predicting responses to a laboratory stress situation, and 2) explore the utility of this instrument for predicting adherence following training in a single stress reduction session …
A Work-Pattern Centric Approach To Building A Personal Knowledge Advantage Machine, Daniel Sloan
A Work-Pattern Centric Approach To Building A Personal Knowledge Advantage Machine, Daniel Sloan
Graduate Theses, Dissertations, and Problem Reports (ETD)
A work pattern, also known as a usage pattern, can be broadly defined as the methods by which a user typically utilizes a particular system. Data mining has been applied to web usage patterns for a variety of purposes. This thesis presents a framework by which data mining techniques could be used to extract patterns from an individual's work flow data in order facilitate a new type of architecture known as a knowledge advantage machine. This knowledge advantage machine is a type of semantic desktop and semantic web application that would assist people in constructing their own personal knowledge networks, …
Adherence To Appropriate Instructional Practice Guidelines In American College And University Physical Activity Programs, Drue T. Stapleton
Adherence To Appropriate Instructional Practice Guidelines In American College And University Physical Activity Programs, Drue T. Stapleton
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background/Purpose: Higher education physical activity programs (HEPAP) in physical education have existed in American college and universities for over 100 years. Initially used to teach physical education and promote physical activity to prepare students for potential wartime conflicts, they have evolved in response to changes in societal and educational purposes and needs. In 2008, NASPE published its updated Guidelines for Appropriate Instructional Practice in Higher Education Physical Activity Programs. The guidelines educate professionals about effective physical education for post-secondary students, but knowledge of their use is limited. The purpose of the study was to examine familiarity and adherence to these …
Development Of A New Human Identity Testing Kit For The Simultaneous Amplification Of The 13 Codis Str Loci Plus Amelogenin Using Locus Specific Brackets (Lsbs), Lizmery Suarez Ferguson
Development Of A New Human Identity Testing Kit For The Simultaneous Amplification Of The 13 Codis Str Loci Plus Amelogenin Using Locus Specific Brackets (Lsbs), Lizmery Suarez Ferguson
Graduate Theses, Dissertations, and Problem Reports (ETD)
STR loci consist of short, repetitive sequence elements 2--7 base pairs in length. An STR genotype is typically determined by PCR amplification followed by fragment size estimation with electrophoresis. Commercial multiplex STR amplification kits are available for the 13 CORE loci used in the USA for human identity testing. The genotyping rationale with these multiplex STR amplification kits involves a two-fold calibration analysis: 1) An internal size standard (ISS) labeled with a separate dye establishes the size of the unknown DNA fragment and 2) an allelic ladder which contains most of the common alleles for each locus is also sized …
Degradation Of Solid Oxide Fuel Cell Anode In Phosphorus-Containing Coal Syngas, Jinlong Yan
Degradation Of Solid Oxide Fuel Cell Anode In Phosphorus-Containing Coal Syngas, Jinlong Yan
Graduate Theses, Dissertations, and Problem Reports (ETD)
Coal is the dominant energy for electric power generation. Solid oxide fuel cells (SOFCs) has been proposed to be incorporated into the coal based power plant. Currently, Nickel-Yttria stabilized Zirconia (YSZ) composite is widely used as the anode in SOFCs (YSZ as electrolyte) due to its low-cost, high electric conductivity, and excellent catalytic activity for many fuel types. However, the long-term stability of the Ni/YSZ anode remains a major concern when a SOFC is operated using coal syngas. Poisoning by the impurity species in the coal syngas poses severe threat on the SOFCs. Of all the impurities present in coal …
Identifying Ancestral Origin Using A Novel Panel Of Single Nucleotide Polymorphism Locations, Zachary D. Williams
Identifying Ancestral Origin Using A Novel Panel Of Single Nucleotide Polymorphism Locations, Zachary D. Williams
Graduate Theses, Dissertations, and Problem Reports (ETD)
A novel panel of single nucleotide polymorphisms (SNPs) used in the classification of ancestral origin is proposed. The panel is motivated by recent results in human identification and categorization using soft biometrics. The panel makes use of SNPs related to the height and ear size of an individual. The classifier proposed in this thesis is a standard maximum-likelihood classifier that matches an individual to the ancestral profile closest to the individual. This method produces results with lower error rates than other proposed methods.;This thesis proposes a new distinct panel of 55 single nucleotide polymorphisms for determining ancestral origin. This panel …
Wellbore Integrity Study For Horizontal Shale Gas Well., Adam Wade
Wellbore Integrity Study For Horizontal Shale Gas Well., Adam Wade
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this thesis was to investigate the wellbore integrity for horizontal shale gas wells using geomechanical properties of shale gas reservoirs to better predict rock behavior, more specifically the maximum stress around the wellbore. Real reservoir properties were used to construct a hypothetical model. A single horizontal well was utilized to analyze the rock behavior. Because we are looking to analyze the geomechanics of the reservoir, two models must be constructed. A reservoir model was first built and then coupled with a more precise geomechanic model. The base model, without any hydraulic fracturing or other stimulation treatments, was …
Black Shale Lithofacies Prediction And Distribution Pattern Analysis Of Middle Devonian Marcellus Shale In The Appalachian Basin, Northeastern U.S.A., Guochang Wang
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Marcellus Shale, marine organic-rich mudrock deposited during Middle Devonian in the Appalachian basin, is considered the largest unconventional shale-gas resource in United State. Although homogeneous in the appearance, the mudstone shows heterogeneity in mineral composition, organic matter richness, gas content, and fracture density. Two critical factors for unconventional mudstone reservoirs are units amenable to hydraulic fracture stimulation and rich of organic matter. The effectiveness of hydraulic fracture stimulation is influenced by rock geomechanical properties, which are related to rock mineralogy. The natural gas content in mudrock reservoirs has a strong relationship with organic matter, which is measured by total …
Production Decline Behavior Of Shale Gas Reservoirs, Zahra Razzaghpanah
Production Decline Behavior Of Shale Gas Reservoirs, Zahra Razzaghpanah
Graduate Theses, Dissertations, and Problem Reports (ETD)
The rise in global demand for energy leads oil and gas industry to enhance and develop newer techniques and technologies that produce more oil and gas from resources. Unconventional gas resources comprise a very important share of the domestic natural gas resource base and offer tremendous potential for future reserve and production growth. One of the most important issues associated with shale gas reservoirs is to have an accurate and reliable estimation of the reserves and ultimate recovery. The purpose of this research is to compare different decline curve analysis techniques, it is also to provide a more reliable method …
Perception Of Leadership Issues Involved In The Implementation Of Total Quality Management By Leaders Of Business And Academe In Saudi Arabia, Ali Aljodea
Graduate Theses, Dissertations, and Problem Reports (ETD)
The importance of implementing quality management in education and industry is of growing importance in today's world. There is a growing concern in Saudi Arabia with quality and only a few institutions have begun to implement TQM. This study examined two of the major institutions in Saudi Arabia, Saudi Basic Industries Corporation (SABIC), and King Saud University (KSU), where TQM principles had been implemented. The study sought to determine the perceptions of upper and middle managers of the two institutions concerning the implementation of TQM and the factors related to those perceptions.;Little has been done in Saudi Arabia to compare …
A Guide To Selected Resources On Memorization Techniques For Pianists: An Annotated Bibliography, Silvia A. Atmadja
A Guide To Selected Resources On Memorization Techniques For Pianists: An Annotated Bibliography, Silvia A. Atmadja
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research project provides reviews of resources for pianists, performers, teachers and students, striving to deepen their knowledge of memorization techniques and explore different methods of memorizing piano music, and for scholars pursuing further research on this important topic. Readers will find resources that discuss the topic from the musical and psychological standpoints, but not a scientific approach to brain and memorization. Resources include books, journal articles, and theses/dissertations that are written in English from the 1890s through the first decade of the 21st century.
Nanostructure And Chemistry Evolution Of Solid Oxide Fuel Cells Upon Cell Operation, Song Chen
Nanostructure And Chemistry Evolution Of Solid Oxide Fuel Cells Upon Cell Operation, Song Chen
Graduate Theses, Dissertations, and Problem Reports (ETD)
Solid Oxide Fuel Cells (SOFCs) are clean and efficient alternatives to conventional power generation technology. In SOFC, electrochemical reactions take place on the triple-phase boundaries (TPBs) between the electrolyte, the electrode and the gaseous fuel. Small changes in TPB structure or chemistry, and the interface between electrode and electrolyte can drastically affect SOFC performance and lifetime. However, very limited experimental work has been reported on the nanostructure and chemistry evolution of interface and TPBs in the SOFC upon cell operation.;The main goal of this dissertation is to investigate the nanostructure and chemistry of the grain boundaries and interfaces including TPB …
Planform Characterization Of A High Lift, Low Speed, Ground Effect Glider, Meagan L. Hubbell
Planform Characterization Of A High Lift, Low Speed, Ground Effect Glider, Meagan L. Hubbell
Graduate Theses, Dissertations, and Problem Reports (ETD)
The main objective of this research was to design and develop a planform shape for a single passenger, unpowered, subsonic glider that relies on gravitational forces for momentum. The wing structure and aerodynamic shape optimized the benefits of near-ground flight (i.e. the increased lift and decreased induced drag), and as a result reduced the overall aircraft weight and wingspan, and enhanced the maneuverability of the craft.;The design faced many challenges as a result of flight in the ground effect regime. There were natural instabilities, primarily in the longitudinal direction that caused the glider to pitch up. In addition, the wing …
Mathematical Modeling And Simulation Of A One-Dimensional Transient Entrained-Flow Gee/Texaco Coal Gasifier, Job S. Kasule
Mathematical Modeling And Simulation Of A One-Dimensional Transient Entrained-Flow Gee/Texaco Coal Gasifier, Job S. Kasule
Graduate Theses, Dissertations, and Problem Reports (ETD)
Numerous gasifier models of varying complexity have been developed to study the various aspects of gasifier performance. These range from simple one-dimensional (1D) models to rigorous higher order 3D models based on computational fluid dynamics (CFD). Even though high-fidelity CFD models can accurately predict many key aspects of gasifier performance, they are computationally expensive and typically take hours to days to execute even on high-performance computers. Therefore, faster 1D partial differential equation (PDE)-based models are required for use in dynamic simulation studies, control system analysis, and training applications.;In the current study, a 1D transient model of a single-stage downward-firing entrained …
Recovery Of Dna Profiles From Fingerprints On Paper After The Application Of Ninhydrin Or Dfo Given Certain Time Periods, Marco Colin Lovejoy
Recovery Of Dna Profiles From Fingerprints On Paper After The Application Of Ninhydrin Or Dfo Given Certain Time Periods, Marco Colin Lovejoy
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the recovery of DNA profiles from fingerprints on paper. This examination occurred in three phases: initial determination of DNA profiles on paper, recovery of DNA profiles given certain time periods, and recovery of DNA profiles after the application of the chemical enhancement techniques of ninhydrin or DFO given certain time periods. Phase II and Phase III paper sheets were exposed to the environment to simulate a house setting. All samples from the phases were extracted with phenol-chloroform. Samples from Phase I and Phase II were amplified with AMPF/STRRTM IdentifilerRTM amplification kit while samples from Phase III were …
Habitat Use By Northern Dusky Salamanders In Riparian Corridors Of Southwestern Pennsylvania, Robert Joseph Michalow
Habitat Use By Northern Dusky Salamanders In Riparian Corridors Of Southwestern Pennsylvania, Robert Joseph Michalow
Graduate Theses, Dissertations, and Problem Reports (ETD)
Amphibian populations have decreased in many parts of the world and the rate of decline has increased over the past 25 years. Much of the population decline can be attributed to habitat fragmentation, thus, possibly forming metapopulations. The semi-aquatic northern dusky salamander belongs to the family Plethodontidae and the genus Desmognathus. Amphibians, such as salamanders, may occupy undisturbed forest floors with biomass equal to, or exceeding, the biomass of other vertebrate groups and they can achieve their highest densities in ancient or undisturbed forests. Salamander densities can be estimated using cover items and this method has become a more common …
Chirality Sorted Single Walled Carbon Nanotubes For Random Network Thin Film Applications, Volkan Ozyar
Chirality Sorted Single Walled Carbon Nanotubes For Random Network Thin Film Applications, Volkan Ozyar
Graduate Theses, Dissertations, and Problem Reports (ETD)
Single-walled carbon nanotubes (SWNTs) are comprised entirely of carbon atoms which lie in a graphitic plane rolled into a seamless cylinder. The direction in which the graphic plane is rolled affects the subsequent chiralities of the SWNTs. This direction is called the chiral vector. This chiral vector, Ch =na1+ma2, is described in terms of a pair of integers (n,m) and a pair of lattice vectors (a1,a2) associated with each carbon atom in the graphene sheet. The magnitude of the chiral vector determines the diameter of the nanotubes as d= Ch/pi. SWNTs with integers n-m =3i, where i = 0, 1, …
Diversity Of Bacterial And Archaeal Populations In Artificial Rumen Fermentors Fed Differing Pasture Diets, Smita Singh
Diversity Of Bacterial And Archaeal Populations In Artificial Rumen Fermentors Fed Differing Pasture Diets, Smita Singh
Graduate Theses, Dissertations, and Problem Reports (ETD)
Rumens harbor diverse groups of microorganisms. These microorganisms help ruminants in efficient digestion of a wide variety of feed materials. Most of these microorganisms are anaerobic and work symbiotically with the host. The amount of microbial diversity depends on the types of substrates present in the feed. Although some of these microorganisms have been cultured and characterized, the majority of them are unknown because they are unculturable. With the development of molecular techniques such as Denaturing Gradient Gel Electrophoresis (DGGE), Temperature Gradient Gel Electrophoresis (TGGE), Automated Ribosomal Intergenic Spacer Analysis (ARISA), Restriction Fragment Length Polymorphism (RFLP), Terminal Restriction Fragment Length …
Health Literacy And Self-Efficacy As Correlates Of Self-Management Of Type 2 Diabetes In Middle-Aged And Older Adults, Tomorrow D. Wilson
Health Literacy And Self-Efficacy As Correlates Of Self-Management Of Type 2 Diabetes In Middle-Aged And Older Adults, Tomorrow D. Wilson
Graduate Theses, Dissertations, and Problem Reports (ETD)
The prevalence of type 2 diabetes is increasing with middle-aged and older adults being those at highest risk for developing this disease. Additionally, the demands of type 2 diabetes self-management can become difficult with age, which can result in poorer glycemic control. The current study examined the relations of health literacy, diabetes-related distress, and diabetes self-efficacy on diabetes self-management among 65 adults aged 40-66 with type 2 diabetes. Age was found to be positively associated with health literacy, but negatively associated with diabetes self-care activities. Additionally, only diabetes self-efficacy was found to be a unique contributor to diabetes self-care activities …
Forensic, Archaeological And Related Application Of Inductively Coupled Plasma Mass Spectrometry, Xinya Zhang
Forensic, Archaeological And Related Application Of Inductively Coupled Plasma Mass Spectrometry, Xinya Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Inductively coupled plasma spectrometry (ICP-MS) is a powerful analytical instrument that can be applied to multiple disciplines for trace elements detection. In the first stage of this research, ICP-MS was used to group archaeological pottery sherds based on the compositional information obtained. Provenience of the pottery was evaluated using multivariate analysis. Results were compared with those obtained on the same data set using neutron activation analysis (NAA). It was found that the groups generated in this study were comparable to the previous ones, and more details within groups were observed. In the second stage of this research, ICP-MS was applied …
Discrete Damage Mechanics Applied To Transverse Matrix Cracking, Fernando A. Cosso
Discrete Damage Mechanics Applied To Transverse Matrix Cracking, Fernando A. Cosso
Graduate Theses, Dissertations, and Problem Reports (ETD)
A constitutive model to predict the stiffness and coefficient of thermal expansion (CTE) reduction due to transverse matrix cracking in laminated composite structures is implemented as a user subroutine in Abaqus. The assumptions of the model are a symmetric laminate under in-plane loads and linear distribution of intralaminar shear stresses. The model was latter validated using 3D finite element analysis (FEA) in a repetitive unit volume for a wide interval of crack densities and for several laminates, and the difference was found to be within 3%. The FEA, the model and classical laminate theory all converged to the same values …
How Big Is Big Coal? Public Perceptions Of The Coal Industry's Economic Impact On West Virginia., Debra R. Blaacker
How Big Is Big Coal? Public Perceptions Of The Coal Industry's Economic Impact On West Virginia., Debra R. Blaacker
Graduate Theses, Dissertations, and Problem Reports (ETD)
The coal industry has played a major role in the culture and history of the state of West Virginia, establishing an identity as the “backbone” of the economy in this region. However, as the mining process has become more mechanized, employment has declined and risks have increased, but support for the industry continues. This study explores research that could provide explanations for this phenomenon, and examines whether there is an overestimation of the role of the coal industry in the regional economy. I also examine factors that may affect one’s perceptions of the economic impact of the industry. In particular, …
Ultrasonic Instrumentation Instruction In Dental Hygiene Programs In The United States, Sharon Lee Stemple Hinchman
Ultrasonic Instrumentation Instruction In Dental Hygiene Programs In The United States, Sharon Lee Stemple Hinchman
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study is to determine the existence and extent of ultrasonic scaling instrumentation instruction in dental hygiene programs nationally. Currently, there is no research available defining a consensus of instruction for ultrasonic instrumentation in dental hygiene programs. An email survey was sent to all directors of dental hygiene programs in the United States (n=323). The response rate was 45%. No significant differences in methods or extent of instruction were found between associate and baccalaureate degree granting programs. Eighty-nine percent of programs introduce hand scaling prior to ultrasonic scaling instrumentation instruction. Students in 96% of the programs are …
Experimental Analysis Of The Post-Failure Behavior Of Coal And Rock Under Laboratory Compression Tests, Dachao Neil Nie
Experimental Analysis Of The Post-Failure Behavior Of Coal And Rock Under Laboratory Compression Tests, Dachao Neil Nie
Graduate Theses, Dissertations, and Problem Reports (ETD)
A major aspect of coal mine design is the structural stability of the mine. For establishing structural stability, the strength of the strata is determined by recovering the cores. The strength is determined through various methods and one method in particular is the Uniaxial Compressive Strength of the rock, which is commonly adopted as the standard strength indicator. However, in-situ behavior by past researchers have shown that rock and coal show significant residual strength contrary to the failure path observed in a conventional compression tests. Researchers in past had used stiff system for generating the post failure behavior of the …
Modeling And Flight Testing Of Differential Thrust And Thrust Vectoring On A Small Uav, Zachary J. Merceruio
Modeling And Flight Testing Of Differential Thrust And Thrust Vectoring On A Small Uav, Zachary J. Merceruio
Graduate Theses, Dissertations, and Problem Reports (ETD)
The primary objectives of this research are to mathematically model the propulsion forces applied to the aircraft during nominal, differential thrust, and thrust vectored flight configurations, and verify this modeling through simulation and flight testing experiments. This thesis outlines the modeling process, simulator development, design, and implementation of a propulsion assisted control system for the WVU Flight Control Systems Lab (FCSL) research aircraft. Differential thrust and thrust vectoring introduce additional propulsive terms in the aircraft force equations that are not present when the thrust line passes through the center of gravity. These additional forces were modeled and incorporated into a …
Studies Of Pulsar Populations: Searching, Timing, And Modeling, Jason Boyles
Studies Of Pulsar Populations: Searching, Timing, And Modeling, Jason Boyles
Graduate Theses, Dissertations, and Problem Reports (ETD)
Pulsars are interesting astronomical objects in their own right but, they are also great instruments to use for physics. Their clock-like periodicity allows them to be used to study the interstellar medium, detect gravitational waves, and study binary evolution. In this work we take a look at a general view of the pulsar population through searching for new pulsars, measuring the properties of pulsars through a technique called pulsar timing, and modeling of the pulsar population using Bayesian techniques.;We took advantage of the immobilization of the Robert C. Byrd Green Bank Telescope during the track refurbishing in 2007 to search …
Iris Recognition: Robust Processing, Synthesis, Performance Evaluation And Applications, Jinyu Zuo
Iris Recognition: Robust Processing, Synthesis, Performance Evaluation And Applications, Jinyu Zuo
Graduate Theses, Dissertations, and Problem Reports (ETD)
The popularity of iris biometric has grown considerably over the past few years. It has resulted in the development of a large number of new iris processing and encoding algorithms. In this dissertation, we will discuss the following aspects of the iris recognition problem: iris image acquisition, iris quality, iris segmentation, iris encoding, performance enhancement and two novel applications.;The specific claimed novelties of this dissertation include: (1) a method to generate a large scale realistic database of iris images; (2) a crosspectral iris matching method for comparison of images in color range against images in Near-Infrared (NIR) range; (3) a …
Differentiating Faking-Good Parents From Non-Faking Parents On The Child Abuse Potential Inventory, Amanda H. Costello
Differentiating Faking-Good Parents From Non-Faking Parents On The Child Abuse Potential Inventory, Amanda H. Costello
Graduate Theses, Dissertations, and Problem Reports (ETD)
Parental fitness evaluations remain common during child abuse investigations, as evidenced by the 19% of victims of maltreatment receiving an evaluation in 2007 in the United States (U.S. Department of Health and Human Services, 2009). A "best practice" approach to parental fitness evaluations consists of using a comprehensive assessment including clinical interviews, risk assessment measures, and behavioral observation (Budd, 2001; 2005). The Child Abuse Potential Inventory (CAP; Milner, 1986) is one risk assessment measure that is often used during evaluations. Unfortunately, abuse risk at pre- and post-treatment as measured by the CAP may be confounded by faking-good responding from the …