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Doppler Global Velocimetry Measurements In A Wing Flow Field With Tip Blowing, Andrew Douglas Starn
Doppler Global Velocimetry Measurements In A Wing Flow Field With Tip Blowing, Andrew Douglas Starn
Graduate Theses, Dissertations, and Problem Reports (ETD)
A two-component Doppler global velocimetry (DGV) system has been developed, improved, and tested. DGV is a non-intrusive optical velocity measurement technique. DGV measures the Doppler shift of the frequency of the light scattered by seed particles at a specific location. The velocity of the particles is related to the Doppler shift.;DGV measurements were made in the WVU low speed wind tunnel on a turbulent jet and on a NACA 2412 airfoil model with and without tip blowing.;The jet data generally agreed well with previous measurements. The jet velocity error was generally within +/-2--4 m/s. The offset error of up to …
Thermomechanical Property Evaluation Of Molybdenum Alloys, Ashok Varadarajan
Thermomechanical Property Evaluation Of Molybdenum Alloys, Ashok Varadarajan
Graduate Theses, Dissertations, and Problem Reports (ETD)
The ultra high temperature structural intermetallic molybdenum and its alloys were studied for their thermal properties and correlated to the material microstructure. Thermal expansion tests were carried out using thermo-mechanical analyzer (TMA). Thermo cycling tests were conducted around 650°C for spinel dispersed molybdenum alloys with 3% wt of spinel or 6% wt of spinel (MgAl 2O4) particles. Results show that the coefficient of thermal expansion (CTE) value decreases with the addition of spinel and silicide particles. Furthermore, pure molybdenum alloys with different processing method also affect the CTE values. Thermo cycling tests show that molybdenum alloy with 6% wt of …
Evaluation Of The Separation Involved In Recycling End-Of-Life (Eol) Electronic Equipment, Vivek Vasudevan
Evaluation Of The Separation Involved In Recycling End-Of-Life (Eol) Electronic Equipment, Vivek Vasudevan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research work focuses on a froth flotation technique to separate two specific EOL plastics, namely High Impact Polystyrene (HIPS) and Acrylonitrile Butadiene Styrene copolymer (ABS).;The objective of this research was to investigate composition of keyboards and casings of personal computers, and other EOL components, as representative of post-consumer EOL equipment. The plastics were then characterized in terms of their density, qualitative composition and inorganic content.;The frother investigated in the froth flotation study was methyl isobutyl carbinol (MIBC), while oleic acid and dodecylamine hydrochloride were investigated as representative surfactants from the anionic and cationic groups, respectively. HIPS and ABS were …
Evaluation Of The Treatment Utility Of The Analog Functional Analysis And The Structured Descriptive Assessment, Carie L. English
Evaluation Of The Treatment Utility Of The Analog Functional Analysis And The Structured Descriptive Assessment, Carie L. English
Graduate Theses, Dissertations, and Problem Reports (ETD)
The analog functional analysis exerts a great deal of control over environmental variables due to the systematic manipulation of specific antecedent and consequent events. Previous research suggests that the treatment utility of the analog might be enhanced by including environmental variables specific to the participant (e.g., caregivers). An alternative to this is to conduct the functional assessment in the natural environment. The structured descriptive assessment (SDA) involves systematic manipulation of antecedent events but is conducted by caregivers in individuals' natural environment. The purpose of this study was to examine the treatment utility of the analog functional analysis and the SDA …
Establishing Control Of Stereotypy By An Antecedent Stimulus Using Punishment, Shannon S. Haag
Establishing Control Of Stereotypy By An Antecedent Stimulus Using Punishment, Shannon S. Haag
Graduate Theses, Dissertations, and Problem Reports (ETD)
Few studies have demonstrated conclusively that the use of punishment in the presence of an antecedent stimulus can bring responding under control of that stimulus. The purpose of this study was to determine stereotypy could be controlled by antecedent stimuli due to a differential history of punishment, and, if so, whether participants would then request the stimulus correlated with nonpunishment. Three adults with mental retardation participated. In Experiment 1, analog functional analyses were conducted to develop hypotheses about the effects of environmental variables on participants' repetitive behaviors. Results of Experiment 1 suggested that the responding of all participants likely was …
Practical Modern Control Design Techniques For Power Systems, Amer Hasanovic
Practical Modern Control Design Techniques For Power Systems, Amer Hasanovic
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation is proposing practical control design techniques for electric power systems load frequency control (LFC) and stability enhancement through tuning of power system stabilizers (PSSs).;For the LFC, two novel design techniques are developed. The first one, called GALMI, is for tuning the gains of the traditional controllers to obtain a robust performance similar to the one that will be obtained using a centralized high order controller based on H-infinity design and Linear matrix Inequalities (LMI). The tuning is performed using genetic algorithms (GA). The second approach is a controller design based on model predictive control (MPC). This design is …
On Flows Of Graphs, Rui Xu
On Flows Of Graphs, Rui Xu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tutte's 3-flow Conjecture, 4-flow Conjecture, and 5-flow Conjecture are among the most fascinating problems in graph theory. In this dissertation, we mainly focus on the nowhere-zero integer flow of graphs, the circular flow of graphs and the bidirected flow of graphs. We confirm Tutte's 3-flow Conjecture for the family of squares of graphs and the family of triangularly connected graphs. In fact, we obtain much stronger results on this conjecture in terms of group connectivity and get the complete characterization of such graphs in those families which do not admit nowhere-zero 3-flows. For the circular flows of graphs, we establish …
Depositional Environments, Age, And Regional Correlation Of The Black Hand Sandstone Member Of The Cuyahoga Formation And The Lower Mississippian Of The Central Appalachians, David L. Matchen
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Black Hand Sandstone Member of the Cuyahoga Formation of Ohio is a multistory, conglomeratic sandstone. Primary lithofacies include trough and planar crossbedded sandstones and massive gravels. The contact between the Black Hand and the surrounding Cuyahoga Formation is sharp and scoured indicating that the contact is an unconformity and sequence boundary. The Black Hand was deposited in a low-sinuosity braided stream within an incised valley system. The river that deposited the Black Hand flowed northward. The Lower Mississippian is subdivided into two sequences.;The age of the Lower Mississippian was determined by surveying the existing literature. Data from the surrounding …
Modeling The Oriented Strandboard Manufacturing Process And The Oriented Strandboard Continuous Rotary Drying System, John R. Noffsinger
Modeling The Oriented Strandboard Manufacturing Process And The Oriented Strandboard Continuous Rotary Drying System, John R. Noffsinger
Graduate Theses, Dissertations, and Problem Reports (ETD)
Oriented Strand Board (OSB) is the leading structural panel product used in residential building construction. This dissertation describes three models and a statistical process control technique all designed to aid manufacturers to cost effectively manufacture OSB. The first model is an OSB Mill Process Flow Model that defines the processing steps and the desired outcomes. The second model is an OSB Mill Model, an ExcelRTM based computer program, designed to answer operational "what if" and "trade-off" questions. The model is a spreadsheet representation of the OSB production process. The third model is an OSB Dryer Model that predicts the dryer …
Use Of A Token Economy To Increase Exercise In Children With Cystic Fibrosis, Rebecca S. Bernard
Use Of A Token Economy To Increase Exercise In Children With Cystic Fibrosis, Rebecca S. Bernard
Graduate Theses, Dissertations, and Problem Reports (ETD)
Cystic fibrosis is a chronic illness that affects several major organ systems, primarily the respiratory system and the exocrine glands of the pancreatic system. The treatment regimen is extensive (e.g., medications, vitamins, high fat diet, airway clearance sessions). Although adherence to medications is high, adherence to the airway clearance techniques (chest physiotherapy and exercise) is less consistent. Increasing exercise adherence is of utmost importance because pulmonary difficulties are associated with the highest mortality rate and exercise is more beneficial than other airway clearance methods. Despite this, very little research has focused on increasing exercise adherence in this population. The purpose …
Teachers' Perceptions Of The Goals Of Secondary Schools Physical Education In State Of Kuwait, Obaid Alshammari
Teachers' Perceptions Of The Goals Of Secondary Schools Physical Education In State Of Kuwait, Obaid Alshammari
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to investigate the perceptions of the Kuwait physical education teachers relevant to the goals of the physical education program for secondary schools. Data were collected from a sample consisting of 200 (n = 200) physical education teachers teaching in six provinces in Kuwait. For data collection, a five-point Likert scale questionnaire, named "Kuwaiti Physical Education Goals" (KPEG) was designed. The instrument asked the participants to indicate the level of agreement with four categories of physical education goals. In addition, differences in teachers based on gender between physical education teachers' perceptions were investigated. An examination …
Advisors' Attitudes Toward Developmental Placement And The Academic Performance And Perceived Success Of Their Underprepared Community College Advisees, June Elizabeth Bracken
Advisors' Attitudes Toward Developmental Placement And The Academic Performance And Perceived Success Of Their Underprepared Community College Advisees, June Elizabeth Bracken
Graduate Theses, Dissertations, and Problem Reports (ETD)
Open admissions policies pose a critical challenge to retention at community colleges because, on average, over one third of the students enter unprepared to meet the academic demands. Faced with the shocking first-year attrition rate of over fifty percent at public community colleges (McCabe, 2000), taxpayers, legislators, and college officials have become embroiled in debate over the high cost of remediation and the "human capital" (Shaffer, 1997, 1998) costs of pitting access against excellence. Previous research has established that mandatory basic skills assessment and mandatory placement into developmental courses leads to lower attrition rates and higher grade point averages for …
Leadership Styles Of Department Chairs And Faculty Utilization Of Instructional Technology, Tongshan Chang
Leadership Styles Of Department Chairs And Faculty Utilization Of Instructional Technology, Tongshan Chang
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study examined the relationship between the leadership styles of academic department chairs of Curriculum and Instruction, Educational Leadership Studies, Teacher Education, and Educational Psychology in Colleges of Education at doctoral/research public universities by Carnegie Classification and faculty utilization of instructional technology in teaching. Two-stage random sampling was used to sample the population. The instrument of Faculty Utilization of Instructional Technology was sent to 93 chairs and 843 faculty, respectively. Bolman and Deal's Leadership Orientation (other) was also sent to 843 selected faculty. Thirty-seven chairs and 230 faculty responded to the survey. Descriptive statistics. Chi-square test, t test, ANOVA, MNOVA, …
Preservice General Education Teachers' Perceptions Of Special Education Training Needs, Kalie Renee Kossar
Preservice General Education Teachers' Perceptions Of Special Education Training Needs, Kalie Renee Kossar
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study focused on the Five-Year-Teacher Education Program at West Virginia University. Specifically, preservice general education students were asked to complete a questionnaire titled Preservice Teacher Perception Questionnaire at three different times while completing the program. The PTPQ was administered after 80 hours in the field (N = 81), after 224 hours in the field (N = 66), and at the end of the program after completing 600 hours in the field (N = 71). The focus of the questionnaire was to gather data both about the preservice general education students' perceptions of students with disabilities and their perceptions of …
Understanding The Relationship Between Self-Esteem And Current Grade Point Average Of College Undergraduates, Jennifer L. Wiles
Understanding The Relationship Between Self-Esteem And Current Grade Point Average Of College Undergraduates, Jennifer L. Wiles
Graduate Theses, Dissertations, and Problem Reports (ETD)
The author investigated the relationship between undergraduates' self-esteem (current and retrospective) and their current grade point average. Specifically, the author investigated the relationship between students' self-esteem (fifth grade, eleventh grade, and undergraduate) and their current undergraduate grade point average. A sample of 95 college students from West Virginia University completed the Rosenberg Self-Esteem Scale. The author assessed the relationship by performing six correlations and three reliability estimates for each self-esteem survey. The results showed a strong correlation between fifth grade self-esteem and current grade point average, but there was no significant correlation at the eleventh grade and undergraduate level. Also, …
Effective Verbal Behaviors During Cognitive Collaboration By Older Adult Partners, Kristopher J. Kimbler
Effective Verbal Behaviors During Cognitive Collaboration By Older Adult Partners, Kristopher J. Kimbler
Graduate Theses, Dissertations, and Problem Reports (ETD)
The present study examined interactive behaviors in older adults (N = 80 individuals). The main goal of the current study was to examine the process of collaboration and how the interactive process related to the collaborative outcome. Three research questions were addressed. First, did partners exhibit similar levels of interactive behavior or did collaborative behaviors vary by partner familiarity, performance order, or sex? Second, to what extent did individual variables predict interactive behaviors? Finally, how were the dyadic interactive behaviors related to the outcome of the collaboration? The proportion of interactive behaviors varied based on performance order and partner familiarity. …
Nutrition Knowledge Of High School Athletes, Charis Mitchell
Nutrition Knowledge Of High School Athletes, Charis Mitchell
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to see where high school athletes are receiving their nutrition information and if they acquire proper nutrition knowledge. The athletes' sources of nutrition information, scores on the nutrition knowledge questionnaire, and the five groups of questions were analyzed by year in school, gender, and primary sports (top 6 primary sports for the questionnaire and 5 groups). 139 high school athletes completed a nutrition knowledge questionnaire. There was a statistical significance for teammates, gender, and primary sports. Thirty (21%) participants answered 19 questions or more correctly on the nutrition knowledge questionnaire. There was no statistical …
Attitudes Of Extension Agents And Program Assistants In West Virginia Towards Involvement Of Special Needs Populations In 4-H Programs, Christina L. Reed
Attitudes Of Extension Agents And Program Assistants In West Virginia Towards Involvement Of Special Needs Populations In 4-H Programs, Christina L. Reed
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine the attitudes of Extension professionals with 4-H program responsibilities in West Virginia toward the involvement of special needs youth in 4-H programs. The study also sought to determine if Extension professionals felt they had sufficient training to work with special needs youth or if additional training was needed. A majority of the respondents (91.0%) agreed that involvement of special needs youth in 4-H programs would foster understanding and self-esteem for all participants. Special needs youth were involved in 66.7% of the programs. A majority of the Extension professionals (80.7%) thought training should …
Examining Internal Programmatic Assessments Implemented By Physician Assistant Educators, Donald G. Shipman
Examining Internal Programmatic Assessments Implemented By Physician Assistant Educators, Donald G. Shipman
Graduate Theses, Dissertations, and Problem Reports (ETD)
Programmatic student learning outcomes assessment is the process of collecting and analyzing data from a myriad of differing sources in order to develop deeper understandings of what students know, understand, and can do with their knowledge as a result of their educational experiences; this cyclic process then utilizes assessment results to improve teaching, learning, and programs (Huba & Freed, 2000). In examining the assessments implemented by Physician Assistant (PA) educators today, a mixed-methods study (i.e., Concurrent Nested Design) utilizing survey research and document analysis was used to conduct a census of all 133 PA program directors in the nation. The …
Frictional Resistance Of Concrete On A Geocomposite Material, Joshua Bryan Cook
Frictional Resistance Of Concrete On A Geocomposite Material, Joshua Bryan Cook
Graduate Theses, Dissertations, and Problem Reports (ETD)
The frictional resistance provided by the underlying layers of a concrete slabs on ground has a large influence on the cracking behavior. To adequately judge the quality of performance of the slabs, it is imperative to investigate the frictional resistance to movement and other relations of the concrete and sub-layer system. It's also crucial to understand exactly how to introduce a drainage layer to the slab without adversely affecting the cracking pattern of the concrete by dramatically altering the resistance provided by the underlying layers.;Frictional resistance of sub-grade systems which incorporate the geocomposite material Tendrain were tested in a laboratory …
Sensitivity Analysis Of The C-130 Sensor Deployment System Arm Using Finite Element Methods, Lawrence Anthony Feragotti
Sensitivity Analysis Of The C-130 Sensor Deployment System Arm Using Finite Element Methods, Lawrence Anthony Feragotti
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Finite Element Method may be the most powerful tool in the engineer's toolbox today, and can be used in many different applications. The purpose of this thesis is to utilize this tool to optimize the current design of the roll-on roll-off sensor deployment system support arm for the C-130 Hercules. The Department of Defense (DOD) and the National Guard (NG) will be using these sensor pallet systems in a variety of command and control configurations for counter narco-terrorism applications. The original design for the sensor deployment arm will be drawn using CAD, and then a Finite Element Analysis will …
Development Of Gas Production Type Curves For Coalbed Methane Reservoirs, Anangela Garcia Arenas
Development Of Gas Production Type Curves For Coalbed Methane Reservoirs, Anangela Garcia Arenas
Graduate Theses, Dissertations, and Problem Reports (ETD)
Coalbed methane is an unconventional gas resource that consists on methane production from the coal seams. The unique coal characteristic results in a dual-porosity system. CBM reservoir performance is also influenced by the interrelationship of reservoir, geologic, and operation parameters. Coalbed methane production data is considered a complex and difficult to analyze especially at the early stages of the recovery.;This study was conducted to develop a simple and reliable tool to predict the performance of CBM in The Northern Appalachian Basin. To achieve this objective, four steps were performed. A unique set of gas production type curves for coalbed methane …
Decentralized Control For Uav Path Planning And Task Allocation, Matthew C. Lechliter
Decentralized Control For Uav Path Planning And Task Allocation, Matthew C. Lechliter
Graduate Theses, Dissertations, and Problem Reports (ETD)
The effort of this research is to move toward enabling Unmanned Air Vehicles to fly in autonomous formations with intelligent mission planning capabilities. In particular, UAVs will be able to autonomously perform path planning and task allocation. During missions, the UAVs must be able to avoid threats and no-fly zones while still reaching their target optimally in time.;A path planning and task allocation approach was first developed that treats the problem as a Multi-dimensional, Multiple-Choice Knapsack Problem. Paths are selected and task assigned while minimizing the UAV team's overall mission cost. Next, a SIMULINK-based centralized simulation environment was created. This …
Parametric Modeling And Analysis Of Structural Bonded Joints, Sailaja Malladi
Parametric Modeling And Analysis Of Structural Bonded Joints, Sailaja Malladi
Graduate Theses, Dissertations, and Problem Reports (ETD)
A closed form model of a double lap bonded joint based on the Hart-Smith Model is considered. An extensional link is added to the inner adherend in order to minimize the magnitude of the shear distribution in the adhesive along the overlap length and equations are formulated for this new model. Various parametric studies are performed on the closed form model to observe their effect on the behavior of the shear stress distribution in the adhesive. Overlap length, stiffness of the extensional link, thickness of the adhesive and stiffness of the adherends are varied in the parametric study.;A 2D finite …
Portable Implementation Of Computer Aided Design Environment For Composite Structures, Santosh Kumar Pagadala E.
Portable Implementation Of Computer Aided Design Environment For Composite Structures, Santosh Kumar Pagadala E.
Graduate Theses, Dissertations, and Problem Reports (ETD)
Composite materials are widely used due to their low weight, long durability and the ability to tailor their properties to specific design requirements. Their wide range of applications requires a solid understanding of their behavior under different load conditions. The calculations needed for efficient and accurate design of composites could be exhaustive and time consuming. Therefore an efficient computer program which would facilitate effective design becomes a key factor to supporting commercial use of composite materials.;A portable software tool was developed in Java programming environment for design analysis of composite materials. This software tool is superior to its predecessor, the …
Comparison Of Path-Planning And Search Methods For Cooperating Unmanned Aerial Vehicles, Zachary Wilson Spritzer
Comparison Of Path-Planning And Search Methods For Cooperating Unmanned Aerial Vehicles, Zachary Wilson Spritzer
Graduate Theses, Dissertations, and Problem Reports (ETD)
The main goal of this research effort is develop a simulation environment for cooperating UAVs within MATLAB's SIMULINK. This is the first step in a process that will eventually lead to the implementation of model UAVs on a model battlefield. The interest in cooperation of UAVs over the past decade has grown significantly. This is due to several reasons including lower operational cost, lower risk for humans, and greater maneuverability.;This research explores two scenarios. The first is a scenario in which all of the characteristics of a battlefield are known prior to the UAVs being launched. Three prevalent path-planning methods …
Employment Opportunities And Skills Necessary For Entry-Level Employment In The Timber Industry, Robert E. Driscole
Employment Opportunities And Skills Necessary For Entry-Level Employment In The Timber Industry, Robert E. Driscole
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine the skills and knowledge needed by entry-level employees in the timber harvesting industry as viewed by the Owner/Operators in the four county area of northern West Virginia. The population consisted of 163 owner/operators in Monongalia, Marion, Taylor and Preston counties. A descriptive survey approach was utilized to explore the training need for persons wishing to enter the timber harvesting industry. The most significant finding was that the owner/operators viewed good work ethics as the most important trait for entry-level employees in the timber industry.
Maternal Diabetes And Perinatal Outcomes, Rachael E. Gainor
Maternal Diabetes And Perinatal Outcomes, Rachael E. Gainor
Graduate Theses, Dissertations, and Problem Reports (ETD)
Diabetes is a serious problem in the nation and in the state of West Virginia (WV). Having diabetes during pregnancy has been associated with several negative perinatal outcomes. This study was done to test the hypothesis that women with diabetes would have more negative perinatal outcomes than those who do not. A secondary hypothesis was women with pre-gestational diabetes would have more negative perinatal outcomes than women with gestational diabetes.;Data were analyzed for the years 2001 and 2002 on all babies born to mothers enrolled in the West Virginia Medicaid program. Data for those two years were analyzed using three …
Development Of Immobilized Metal Affinity Chromatography For The Isolation And Selective Enrichment Of Phosphopeptides, Erica Sims Jackson
Development Of Immobilized Metal Affinity Chromatography For The Isolation And Selective Enrichment Of Phosphopeptides, Erica Sims Jackson
Graduate Theses, Dissertations, and Problem Reports (ETD)
Protein structure and function are often regulated by covalent modifications to the protein. One of the most important of these modifications is phosphorylation, which can control many cellular processes. The sites of phosphorylation must be determined to fully understand the protein's function and regulatory events, which can be challenging because of the low stoichiometry of the phosphorylated regulatory proteins.;Several strategies for enrichment of phosphopeptides prior to analysis have been developed, however, Immobilized Metal Affinity Chromatography (IMAC) is the most widely used method. Online IMAC-ESI-MS has been developed with ammonium hydroxide as the elutor. Gradient elution from the IMAC column demonstrates …
Using The Early Childhood Environmental Rating Scale As A Tool For Classroom Improvement, Brittany K. Lucci
Using The Early Childhood Environmental Rating Scale As A Tool For Classroom Improvement, Brittany K. Lucci
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study's intent was to examine the use of the ECERS as a training tool for classroom improvement. Quality ratings for classrooms were measured using the two ECERS observations with a training session in between. The participants of this study were 15 Educare classrooms from a northern county in West Virginia.;An alpha level of .05 was used in all statistical analysis. The results of the one-tailed paired-sampled t-test of the ECERS displayed two significant findings. A second analysis resulted in additional significant findings, after removing a center from the study.;This was an important study for child care centers and directors. …