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Determining The Number Of Test Fires Needed To Represent The Variability Present Within A Firearm, Eric Law
Determining The Number Of Test Fires Needed To Represent The Variability Present Within A Firearm, Eric Law
Graduate Theses, Dissertations, and Problem Reports (ETD)
Many studies have been performed in recent years in the field of firearm examination with the goal of providing an objective method for comparisons of fired cartridge cases. To date there has been no research to support the number of test fires needed to represent the variability present within a firearm. When a suspect firearm is submitted to a firearm examiner, test fires are performed to collect fired cartridge cases for comparison purposes. Typically, two to four test fires are performed for every firearm. The recovered cartridge cases are compared to each other to determine which characteristics from the firearm …
Implementing The Local Mine Stiffness Calculation In Lamodel, Kaifang Li
Implementing The Local Mine Stiffness Calculation In Lamodel, Kaifang Li
Graduate Theses, Dissertations, and Problem Reports (ETD)
Catastrophic failure of mine structures, such as coal/rock bumps and cascading pillar failures, is a difficult and longstanding ground control issue which has presented serious safety problems in coal, metal and nonmetal mines. Although various approaches for analyzing this issue have been proposed, it is still hard to predict and/or to eliminate these violent pillar failures due to the poor understanding of the exact mechanism. The local mine stiffness criterion had been recognized as a promising approach for analyzing the issue of dynamic underground pillar collapses. This criterion was initially hypothesized and tested with laboratory experimentation, but with the advent …
Seismic Geometric Attribute Analysis For Fracture Characterization: New Methodologies And Applications, Haibin Di
Graduate Theses, Dissertations, and Problem Reports (ETD)
In 3D subsurface exploration, detection of faults and fractures from 3D seismic data is vital to robust structural and stratigraphic analysis in the subsurface, and great efforts have been made in the development and application of various seismic attributes (e.g. coherence, semblance, curvature, and flexure). However, the existing algorithms and workflows are not accurate and efficient enough for robust fracture detection, especially in naturally fractured reservoirs with complicated structural geometry and fracture network. My Ph.D. research is proposing the following scopes of work to enhance our capability and to help improve the resolution on fracture characterization and prediction.;For discontinuity attribute, …
Design Of Composite Sandwich Panels For Lightweigh Applications In Air Cargo Containers, Mariana M. William
Design Of Composite Sandwich Panels For Lightweigh Applications In Air Cargo Containers, Mariana M. William
Graduate Theses, Dissertations, and Problem Reports (ETD)
Air cargo containers are used to load freight on various types of aircrafts to expedite their handling. The current containers are closed containers made of aluminum or combination of aluminum (frame) and Lexan (walls). The objective of this study is to develop innovative, lightweight design and joining concepts for air cargo containers that would allow for weight reduction in the air cargo transportation industry. For this purpose, lightweight carbon fiber woven composite design configuration of a typical air cargo container was developed and manufactured. The new design was devised to meet the FAA-approved certification requirements of the Technical Standard Order …
Assessing The Match Performance Of Non-Ideal Operational Facial Images Using 3d Image Data., Rupindrani Aila
Assessing The Match Performance Of Non-Ideal Operational Facial Images Using 3d Image Data., Rupindrani Aila
Graduate Theses, Dissertations, and Problem Reports (ETD)
Biometric attributes are unique characteristics specific to an individual, which can be used in automated identification schemes. There have been considerable advancements in the field of face recognition recently, but challenges still exist. One of these challenges is pose-variation, specifically, roll, pitch, and yaw variations away from a frontal image. The goal of this problem report is to assess the improvement of facial recognition performance obtainable by commercial pose-correction software. This was done using pose-corrected images obtained in two ways: 1) non-frontal images generated and corrected using 3D facial scans (pseudo-pose-correction) and 2) the same non-frontal images corrected using FaceVACs …
Three Essays Analyzing The Pricing Of A Community Supported Agriculture System, Dwayne Bauknight
Three Essays Analyzing The Pricing Of A Community Supported Agriculture System, Dwayne Bauknight
Graduate Theses, Dissertations, and Problem Reports (ETD)
The current landscape of small farms is approaching a major shift as more and more small farms are poised to come onto open marketplace around urban areas. A different farming business model called Community Supported Agriculture (CSA) has been utilized as new way for farmers to potentially earn above average revenue. However, small farmers still feel dissatisfied with their overall farm income, but when implementing the CSA business model the producers do feel that the CSA enhances their overall income satisfaction. Three essays were developed to examine this predicament. The first essay examined possible economic pricing models that a CSA …
Climate Change, Capitalism, And Citizen Science: Developing A Dialectical Framework For Examining Volunteer Participation In Climate Change Research, Joshua A. Wixom
Climate Change, Capitalism, And Citizen Science: Developing A Dialectical Framework For Examining Volunteer Participation In Climate Change Research, Joshua A. Wixom
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation discusses the complex social relations that link citizen science, scientific literacy, and the dissemination of information to the public. Scientific information is not produced in value-neutral settings by people removed from their social context. Instead, science is a social pursuit and the scientist's social context is embedded in the knowledge produced. Additionally, the dissemination of this information via numerous media outlets is filtered through institutional lenses and subject to journalistic norms. As a result, the general public must be able to recognize the inherent biases in this information. Yet, the rates of scientific literacy in the U.S. are …
Calibrating Lamodel For Subsidence, Jian Yang
Calibrating Lamodel For Subsidence, Jian Yang
Graduate Theses, Dissertations, and Problem Reports (ETD)
LaModel uses a laminated overburden boundary-element model and can not only calculate seam-level stresses and displacements but also surface subsidence for thin tabular deposit such as coal seams. Up to this point, the material property wizards in LaModel were primarily designed for calculating accurate stress redistribution in single and multiple-seam situations and for investigating and optimizing pillar sizes and layouts in relation to overburden, abutment and multiple-seam stresses. However, the critical input parameters which will give the most accurate seam-level stress distribution do not necessarily produce the best surface subsidence prediction. The objective of this research is to develop a …
Using A Duration-Based Schedule Performance Index To Monitor The Performance Of Projects Including Estimating The Final Cost, Nooshin Yousefi
Using A Duration-Based Schedule Performance Index To Monitor The Performance Of Projects Including Estimating The Final Cost, Nooshin Yousefi
Graduate Theses, Dissertations, and Problem Reports (ETD)
One of the main concerns of project managers is monitoring the schedule performance of construction projects. A project manager needs tools to not only understand the status of project schedule performance, but also to find the causes of delays and the corresponding corrective actions. Hence, discovering time deviations from the project plan provides more reliable project schedule control. Applying statistical quality control charts on the project schedule performance index is suggested in this study. The use of quality control charts in this research monitors the process plan and provides first alarms for applying changes by detecting the time deviations over …
Modeling And Control Of Post-Combustion Co2 Capture Process Integrated With A 550mwe Supercritical Coal-Fired Power Plant, Qiang Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
This work focuses on the development of both steady-state and dynamic models for an monoethanolamine (MEA)-based CO2 capture process for a commercial-scale supercritical pulverized coal (PC) power plant, using Aspen PlusRTM and Aspen Plus DynamicsRTM. The dynamic model also facilitates the design of controllers for both traditional proportional-integral-derivative (PID) and advanced controllers, such as linear model predictive control (LMPC), nonlinear model predictive control (NMPC) and H? robust control.;A steady-state MEA-based CO2 capture process is developed in Aspen PlusRTM. The key process units, CO2 absorber and stripper columns, are simulated using the rate-based method. The steady-state simulation results are validated using …
Total Synthesis Of Ht-13-A And Ht-13-B, Total Synthesis Of Aurantioclavine, Progress Towards The Synthesis Of Cycloclavine, Yilin Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Total synthesis of tetracyclic indole alkaloid ht-13-A and ht-13-B has been accomplished from commercially available (S)-4-amino-2-hydroxybutyric acid and trans4-hydroxy-L-proline respectively. The key synthetic steps include an acyliminium ion allylation, a Mitsunobu reaction, a palladium-catalyzed Stille-Kelly cross coupling reaction, and a carbon monoxide mediated palladium-catalyzed reductive Nheterocyclization. The total synthesis of aurantioclavine has been studied. The synthesis commenced with 2-amino-3-nitrophenol. Key synthetic steps include a Stille coupling reaction, a Heck reaction, a Lewis acid mediated cyclization and a carbon monoxide mediated palladium-catalyzed reductive N-heterocyclization. In addition, the first asymmetric total synthesis of (+)-cycloclavine has been studied. Key synthetic steps include a …
The Biased Bystander: How Homophobia Affects Intervention In Physical Fights, R. Kyle Saunders
The Biased Bystander: How Homophobia Affects Intervention In Physical Fights, R. Kyle Saunders
Graduate Theses, Dissertations, and Problem Reports (ETD)
Sociologists, criminologists and psychologists have offered a number of theories to understand bystander intervention in emergency situations in general. Most notably, the bystander effect argues that as the number of bystanders to an incident increases, the less likely someone is to intervene. However, the likelihood of intervention could also be dependent on the personal biases of the observers. A bystander's contempt or dislike for particular victims (homosexuals, minorities, women, etc.) may influence his or her willingness to intervene. This research explores, through the use of vignette experiments, the extent to which a bystander's homophobia influences their willingness to intervene on …
Design And Development Of A Twisted String Exoskeleton Robot For The Upper Limb, Lei Jiang
Design And Development Of A Twisted String Exoskeleton Robot For The Upper Limb, Lei Jiang
Graduate Theses, Dissertations, and Problem Reports (ETD)
High-intensity and task-specific upper-limb treatment of active, highly repetitive movements are the effective approaches for patients with motor disorders. However, with the severe shortage of medical service in the United States and the fact that post-stroke survivors can continue to incur significant financial costs, patients often choose not to return to the hospital or clinic for complete recovery. Therefore, robot-assisted therapy can be considered as an alternative rehabilitation approach because the similar or better results as the patients who receive intensive conventional therapy offered by professional physicians.;The primary objective of this study was to design and fabricate an effective mobile …
Evaluation Of Five Electronic Apex Locators Accuracy In Determining The Major Foramen And Apical Constriction: An In Vitro Study, Emma Hunter
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to compare the diagnostic accuracy of five different electronic apex locators (EAL), including the Root ZX II, Endo-EZE FIND, APEX ID, ProMark, and Parkell Formatron. The evaluation of the EALs were two-fold. One objective was to evaluate the ability of each EAL to detect the major foramen, and the second objective was to evaluate the reliability of each EAL indication of the apical constriction.;Materials and Methods: A total of 100 single-canal extracted human teeth were decoronated and checked for patency. Fifty teeth were evaluated by each electronic apex locator to determine their accuracy for …
An Analysis And Validation Of An Online Photographic Identity Exposure Evaluation System, Elliott V. Iannello
An Analysis And Validation Of An Online Photographic Identity Exposure Evaluation System, Elliott V. Iannello
Graduate Theses, Dissertations, and Problem Reports (ETD)
The rapid growth in volume over the last decade of personal photos placed online due to the advent of social media has made users highly susceptible to malicious forms of attack. A system was proposed and constructed using Open Source technologies capable of acquiring the necessary data to conduct a measurement of online photographic exposure to aid in assessing a user's digital privacy. The system's effectiveness at providing feedback on the level of exposure was tested by using a controlled set of three subjects. Each subject provided three training photos each that simulated what would be easily ascertainable from social …
Geomorphic Landform Design As An Alternative For Conventional Valley Fill Surface Mine Reclamation: Assessing Conceptual Design, Groundwater Modeling, And Contaminant Desorption, Nathan C. Depriest
Geomorphic Landform Design As An Alternative For Conventional Valley Fill Surface Mine Reclamation: Assessing Conceptual Design, Groundwater Modeling, And Contaminant Desorption, Nathan C. Depriest
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research aimed to evaluate the potential of applying geomorphic landform design (GLD) principles to valley fill reclamation, specifically in southern West Virginia, central Appalachia, USA. When constructing reclaimed landforms, GLD aims to mimic the geomorphology of reference landforms that are stable and in erosive and hydrologic equilibrium. Challenges with the technique have been identified related to use in central Appalachia. Reference landform design values vary by location and need to be quantified at a local scale for site-specific design. Due to the steep slopes of existing valleys, constructing engineered landforms that naturally blend in with the surrounding environment may …
Influences On Parents’ Decision Making Prior To Youth Sport Program Enrollment, Karl E. Zang
Influences On Parents’ Decision Making Prior To Youth Sport Program Enrollment, Karl E. Zang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Current literature has previously reported on the potential benefits of sport participation (Dhurup, 2012; Tomik, Olex-Zarychta, & Mynarski, 2012), which are also some of the main motivations parents enroll their children in youth sport programs (Kurnik, Kajtna, Bedenik, & Kovac, 2013). Parents have also been reported as being both gatekeepers (Schwab, Wells, & Arthur-Banning, 2010) and supporters (Holt, Tamminen, Black, Mandigo, & Fox, 2009) in regards to their child’s participation. This study surveyed 135 parents enrolled in participation youth sport programs in order to identify the influential factors on parents youth sport program selection. Assessed influential factors were compared to …
Design, Fabrication, And Testing Of A Multi-Cycle Pulse Detonation Engine, Eli M. Thorpe
Design, Fabrication, And Testing Of A Multi-Cycle Pulse Detonation Engine, Eli M. Thorpe
Graduate Theses, Dissertations, and Problem Reports (ETD)
With the constant drive to improve the efficiency of systems used to generate heat and work pulse detonation engines have been explored. Pulse detonation engines can be described by the Humphrey thermodynamic cycle which, in theory, has advantages over the Brayton, Otto, and Diesel cycles.;This work is concerned with the design, fabrication, and the initial tests of a pulse detonation laboratory test bed. The test bed was designed with modularity and ease of alteration in mind while ensuring that a wide range of detonable fuel and oxidizer mixtures where able to be utilized.;Initial testing with a methane and oxygen mixture …
What Are Faculty Perceptions Of Using Emotional Intelligence In Pedagogy And Andragogy?, Eveldora R. Wheeler
What Are Faculty Perceptions Of Using Emotional Intelligence In Pedagogy And Andragogy?, Eveldora R. Wheeler
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation study compared the key findings from the first piece of research (pilot study) by allowing further exploration and re-examination of faculties' Perceptions of Using Emotional Intelligence (PUEI) in STEM, Social Sciences, online, and face to face in Pedagogy and Andragogy. This study draws particular attention to the notable rise of emotional issues emerging in differing educational contexts (online and face to face) and the significance of faculty response to their PUEI. Emotional intelligence, a complexity often viewed skeptically is a recurring theme for this study and can greatly benefit higher educational institutions, professional learning environments, and businesses particularly. …
Spanning Trails And Spanning Trees, Meng Zhang
Spanning Trails And Spanning Trees, Meng Zhang
Graduate Theses, Dissertations, and Problem Reports (ETD)
There are two major parts in my dissertation. One is based on spanning trail, the other one is comparing spanning tree packing and covering.;The results of the spanning trail in my dissertation are motivated by Thomassen's Conjecture that every 4-connected line graph is hamiltonian. Harary and Nash-Williams showed that the line graph L( G) is hamiltonian if and only if the graph G has a dominating eulerian subgraph. Also, motivated by the Chinese Postman Problem, Boesch et al. introduced supereulerian graphs which contain spanning closed trails. In the spanning trail part of my dissertation, I proved some results based on …
Same-Race Role-Models And Self-Efficacy Among African American College Students, Rueben Brock
Same-Race Role-Models And Self-Efficacy Among African American College Students, Rueben Brock
Graduate Theses, Dissertations, and Problem Reports (ETD)
Social Cognitive Career Theory (SCCT; Lent & Brown, 1996) offers an understanding of career interest, goals, and performance. It is based, in large part, on the social cognitive construct of self-efficacy (Bandura, 1986). The theory offers a framework for the interactive influence that self-efficacy, outcomes expectations, and personal goals have upon each other in the formation of a person's career aspirations. Within SCCT and the Social Learning Theory that it is based on, there is the presumption that modeling is a key component of learning (Bandura, 1986). The purpose of this study was to explore the impact that same-race role-models …
Dynamic Response In Transient Stress-Field Behavior Induced By Hydraulic Fracturing, Andrew Jenkins
Dynamic Response In Transient Stress-Field Behavior Induced By Hydraulic Fracturing, Andrew Jenkins
Graduate Theses, Dissertations, and Problem Reports (ETD)
Hydraulic fracturing is a technique which is used to exploit geologic features and subsurface properties in an effort to increase production in low-permeability formations. The process of hydraulic fracturing provides a greater surface contact area between the producing formation and the wellbore and thus increases the amount of recoverable hydrocarbons from within the reservoir. The use of this stimulation technique has brought on massive applause from the industry due to its widespread success and effectiveness, however the dynamic processes that take part in the development of hydraulic fractures is a relatively new area of research with respect to the massive …
Impact Of Pore Size On Gas Condensate Critical Properties Confined In Marcellus Shale, Erfan Mustafa Allawe
Impact Of Pore Size On Gas Condensate Critical Properties Confined In Marcellus Shale, Erfan Mustafa Allawe
Graduate Theses, Dissertations, and Problem Reports (ETD)
Gas condensate reservoirs have become an important topic of research for reservoir engineers due to the drop in gas prices in the past few years. Because of this drop, the majority of gas producers have become more interested in condensate and wet gas resources. However, gas condensate reservoirs have a unique phase behavior system and they are considered the most complicated reservoirs to develop due to the continuous composition changes. Therefore, the effects of nanopores on the critical properties of the confined gas condensate in the Marcellus Shale will be investigated in this research in order to achieve the optimum …
Predicting Production Behavior Of The Marcella Shale By Using Arps Equation, Bassam Abdulhameed Alabdulkareem
Predicting Production Behavior Of The Marcella Shale By Using Arps Equation, Bassam Abdulhameed Alabdulkareem
Graduate Theses, Dissertations, and Problem Reports (ETD)
The behavior of the horizontal wells producing from Marcellus shale is not fully understood because of the limited production history. As a result a method of predicting the long term production is needed. A number of production decline curve analysis models have been proposed for application to unconventional gas reservoirs. The problem is that the reliable production prediction method are not available when production history from Marcellus shale horizontal wells is limited. In this study, production and completion data from Marcellus shale wells were collected to build a generic model The generic model was then used in conjunction with a …
Fault Tolerance Analysis Of L1 Adaptive Control System For Unmanned Aerial Vehicles, Kiruthika Krishnamoorthy
Fault Tolerance Analysis Of L1 Adaptive Control System For Unmanned Aerial Vehicles, Kiruthika Krishnamoorthy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Trajectory tracking is a critical element for the better functionality of autonomous vehicles. The main objective of this research study was to implement and analyze L1 adaptive control laws for autonomous flight under normal and upset flight conditions. The West Virginia University (WVU) Unmanned Aerial Vehicle flight simulation environment was used for this purpose. A comparison study between the L1 adaptive controller and a baseline conventional controller, which relies on position, proportional, and integral compensation, has been performed for a reduced size jet aircraft, the WVU YF-22. Special attention was given to the performance of the proposed control laws in …
Impact Assessment Of Facial Recognition Algorithms' Performance When Modifying Nose Dimensions, Jacob Wolen
Impact Assessment Of Facial Recognition Algorithms' Performance When Modifying Nose Dimensions, Jacob Wolen
Graduate Theses, Dissertations, and Problem Reports (ETD)
This work quantitatively measures the impact of modifying the nasal width and length dimensions, in a simulated plastic surgery, on the Facial Recognition algorithms, Principal Component Analysis (PCA), Linear Discrimination Analysis (LDA), and Local Binary Patterns Histogram (LBPH). This was integrated through the use of OpenCV. It was found that as the nose width increases beyond 40% its original width, there is an average decrease in facial recognition performance of up to 14%. It was also found that as the nose was modified vertically, there was less than a 3% decrease in performance for the facial recognition algorithms. These rates …
Pulsar Population Synthesis Using Palfa Detections And Pulsar Search Collaboratory Discoveries Including A Wide Dns System And A Nearby Msp, Joseph Karl Swiggum
Pulsar Population Synthesis Using Palfa Detections And Pulsar Search Collaboratory Discoveries Including A Wide Dns System And A Nearby Msp, Joseph Karl Swiggum
Graduate Theses, Dissertations, and Problem Reports (ETD)
Using the ensemble of detections from pulsar surveys, we can learn about the sizes and characteristics of underlying populations. In this thesis, I analyze results from the Pulsar Arecibo L-band Feed Array (PALFA) precursor and Green Bank Telescope 350 MHz Drift Scan surveys; I examine survey sensitivity to see how detections can inform pulsar population models, I look at new ways of including young scientists -- high school students -- in the discovery process and I present timing solutions for students' discoveries (including a nearby millisecond pulsar and a pulsar in a wide-orbit double neutron star system).;The PALFA survey is …
Role Of Interference And Computational Complexity In Modern Wireless Networks: Analysis, Optimization, And Design, Salvatore Talarico
Role Of Interference And Computational Complexity In Modern Wireless Networks: Analysis, Optimization, And Design, Salvatore Talarico
Graduate Theses, Dissertations, and Problem Reports (ETD)
Owing to the popularity of smartphones, the recent widespread adoption of wireless broadband has resulted in a tremendous growth in the volume of mobile data traffic, and this growth is projected to continue unabated. In order to meet the needs of future systems, several novel technologies have been proposed, including cooperative communications, cloud radio access networks (RANs) and very densely deployed small-cell networks. For these novel networks, both interference and the limited availability of computational resources play a very important role. Therefore, the accurate modeling and analysis of interference and computation is essential to the understanding of these networks, and …
"Man Of The House": A Turning Point That Leads To Criminal Behavior?, Delia A. Trickett
"Man Of The House": A Turning Point That Leads To Criminal Behavior?, Delia A. Trickett
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research study seeks to formally test a relationship between household structure, birth order and juvenile delinquency that was suggested as an onset to criminal behavior by men incarcerated in a maximum security facility. The focus of this study is on first born males due to the retrospective narratives given by the incarcerated men that being a first born male who has either lost a father-or father figure due to death, divorce and/or prison have felt a sense of responsibility as the "man of house" to be able to provide family stability which can include care of other siblings, maintaining …
Effect Of Boundary Conditions On Propagation And Morphology Of Premixed Flames In Narrow Conduits, Orlando J. Ugarte-Almeyda
Effect Of Boundary Conditions On Propagation And Morphology Of Premixed Flames In Narrow Conduits, Orlando J. Ugarte-Almeyda
Graduate Theses, Dissertations, and Problem Reports (ETD)
Boundary conditions play a key role in the evolution and morphology of flame fronts, especially when combustion occurs in narrow chambers. The burning intensity and the flame-generated flow can be significantly modified by the momentum and energy transferred at the walls, which are further modified by the exothermal nature of the process. In this work, the effect of the wall roughness and thermal conditions on the flame propagation is explored. Specifically, conduits with and without obstacles, having adiabatic or isothermal walls, are investigated.;Wall friction constitutes one of the main reasons of spontaneous flame acceleration in narrow pipes. Although this phenomenon …