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Upscaling Of Sagd Process Using Spectrum-Based Analysis For Heterogeneius Reservoirs, Vahid Mohammadnia
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 …
Application And Control Aware Communication Strategies For Transportation And Energy Cyber-Physical Systems, Ehsan Moradi Pari
Application And Control Aware Communication Strategies For Transportation And Energy Cyber-Physical Systems, Ehsan Moradi Pari
Graduate Theses, Dissertations, and Problem Reports (ETD)
Cyber--Physical Systems (CPSs) are a generation of engineered systems in which computing, communication, and control components are tightly integrated. Some important application domains of CPS are transportation, energy, and medical systems. The dynamics of CPSs are complex, involving the stochastic nature of communication systems, discrete dynamics of computing systems, and continuous dynamics of control systems. The existence of communication between and among controllers of physical processes is one of the basic characteristics of CPSs. Under this situation, some fundamental questions are: 1) How does the network behavior (communication delay, packet loss, etc.) affect the stability of the system? 2) Under …
Controller Synthesis Of Multi-Axial Robotic System Used For Wearable Devices, Qian Mou
Controller Synthesis Of Multi-Axial Robotic System Used For Wearable Devices, Qian Mou
Graduate Theses, Dissertations, and Problem Reports (ETD)
Wearable devices are commonly used in different fields to help improving performance of movements for different groups of users. The long-term goal of this study is to develop a low-cost assistive robotic device that allows patients to perform rehabilitation activities independently and reproduces natural movement to help stroke patients and elderly adults in their daily activities while moving their arms. In the past few decades, various types of wearable robotic devices have been developed to assist different physical movements. Among different types of actuators, the twisted-string actuation system is one of those that has advantages of light-weight, low cost, and …
The Role Of West Virginia University In The Economic Development Of West Virginia: A General Equilibrium Approach, Priyanjali Sinha
The Role Of West Virginia University In The Economic Development Of West Virginia: A General Equilibrium Approach, Priyanjali Sinha
Graduate Theses, Dissertations, and Problem Reports (ETD)
Universities, industries and government are major institutions and play an important role in local economic growth and development. They often work collectively in achieving these goals. While the role of institutions in economic development is well-founded in the literature, a university's strategic role as an institution to encourage local area development is only now being recognized. The existing literature recognizes the spillover effect of mainly university research on local industrial productivity and innovations at the national level. The impact of various university activities on numerous other local economic development indicators like per capita income, poverty, school enrollments etc., at county …
Fabrication Of Nanoelectrode Arrays For Dopamine Detection, Savan Suri
Fabrication Of Nanoelectrode Arrays For Dopamine Detection, Savan Suri
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recent advancements in the semiconductor fabrication technologies have greatly helped in advancing the understanding of electrochemistry at nano scale (10-9 m). Electrodes are being produced at micro (10-6 m) and nano scale with varied materials, designs and for diverse applications. Better electrochemical sensing and detecting capabilities are achieved with nanoelectrodes in comparison with regular macroelectrodes. Lot of theoretical studies of electrochemistry at these nanoelectrodes have been proposed and developed. Despite the theoretical advancements, little has been done in experimental studies of nanoelectrodes. The progress is majorly impeded by lack of reliable fabrication procedures to produce such nanoelectrodes and test them …
Microfluidic Based Hydrate Permeability System: Design And Construction, Matthew Tacker
Microfluidic Based Hydrate Permeability System: Design And Construction, Matthew Tacker
Graduate Theses, Dissertations, and Problem Reports (ETD)
Methane hydrates represent a vast and untapped fossil fuel resource underlying large portions of the world's artic continental surfaces and sub-sea continental shelves. These hydrates are crystalline solids that consist of methane molecules surrounded by cages of interacting water molecules, similar to ice. Methane hydrates occur naturally, where temperature and pressure conditions favor their formation. In order to utilize these resources, methods must be developed to determine the conditions most favorable to hydrate extraction. One important condition is permeability and how it is affected by hydrates. Due to the difficulty and cost of field studies, the study of laboratory-synthesized hydrates …
A Kriging Method For Modeling Cycle Time-Throughput Profiles In Manufacturing, Amirmahdi Tafreshian
A Kriging Method For Modeling Cycle Time-Throughput Profiles In Manufacturing, Amirmahdi Tafreshian
Graduate Theses, Dissertations, and Problem Reports (ETD)
In semiconductor manufacturing, the steady-state behavior of a wafer fab system can be characterized by its cycle time-throughput profiles. These profiles quantify the relationship between the cycle time of a product and the system throughput and product mix. The objective of this work is to efficiently generate such cycle time-throughput profiles in manufacturing which can further assist decision makings in production planning.;In this research, a metamodeling approach based on Stochastic Kriging model with Qualitative factors (SKQ) has been adopted to quantify the target relationship of interest. Furthermore, a sequential experimental design procedure is developed to improve the efficiency of simulation …
Gender Estimation From Fingerprints Using Dwt And Entropy, Sneha Nagabhyru
Gender Estimation From Fingerprints Using Dwt And Entropy, Sneha Nagabhyru
Graduate Theses, Dissertations, and Problem Reports (ETD)
Gender estimation from fingerprints have wide range of applications, especially in the field of forensics where identifying the gender of a criminal can reduce the list of suspects significantly. Although there have been quite a few research papers in the field of gender estimation from fingerprints most of those experiments used a lot of features but were only able to achieve poor classification results. That being the motivation behind the study we successfully proposed two different approaches for gender estimation from fingerprints and achieved high classification accuracy.;In this study we have developed two different approaches for gender estimation from fingerprints. …
Hydroclimatic Assessment Of Changing Climate On Diarrheal Diseases With Reference To Cholera, Fariborz Nasr Azadani
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 …
Numerical Modeling And Simulations For Techno-Economic Assessment Of Non-Conventional Energy Systems, Manish Nandanwar
Numerical Modeling And Simulations For Techno-Economic Assessment Of Non-Conventional Energy Systems, Manish Nandanwar
Graduate Theses, Dissertations, and Problem Reports (ETD)
The techno-economic analyses of two non-conventional energy systems -- enhanced geothermal systems (EGS) and natural gas hydrate systems were performed using a numerical simulation approach. These energy systems, which are still in the development stage and not yet commercialized, are characterized by common components, which are surface plant facilities and subsurface fluid flow and heat transfer. This study aims at a better understanding and advanced evaluation of energy potential as well as the economic viability of these systems by the development of new robust numerical models in order to obtain a more realistic representation of the physical systems.;The first part …
How College Instructors Use Social Media For Instruction, Benson Njoroge
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 …
Investigation Of Combustion Phenomena In A Single-Cylinder Spark-Ignited Natural Gas Engine With Optical Access, Vishnu Padmanaban
Investigation Of Combustion Phenomena In A Single-Cylinder Spark-Ignited Natural Gas Engine With Optical Access, Vishnu Padmanaban
Graduate Theses, Dissertations, and Problem Reports (ETD)
More demanding efficiency and emissions standards for internal combustion (IC) engines require novel combustion strategies, alternative fuels, and improved after-treatment systems. However, their development depends on improved understanding of in-cylinder processes. For example, the lower efficiency of conventional spark-ignited (SI) natural-gas (NG) engines reduces their utilization in the transportation sector. Single-cylinder optical-access research engines allow the use of non-intrusive visualization techniques that study in-cylinder flow, fuel-oxidizer mixing, and combustion and emissions phenomena under conditions representative of production engines. These visualization techniques can provide qualitative and quantitative answers to fundamental combustion-phenomena questions such as the effects of engine design, operating conditions, …
Uncertainty Quantification Through Bayesian Analysis For A Fixed Bed Experiment Of Carbon Capture Using Polyethylenimine (Pei) Solid Sorbents, Brian T. Logsdon
Uncertainty Quantification Through Bayesian Analysis For A Fixed Bed Experiment Of Carbon Capture Using Polyethylenimine (Pei) Solid Sorbents, Brian T. Logsdon
Graduate Theses, Dissertations, and Problem Reports (ETD)
With greenhouse gas emissions becoming a major concern and topic for research over the past decade, much effort has been supplied into the progress of reducing these emissions. Carbon dioxide concentration has increased over past 60 years. A major source of this emission is post combustion coal power plants. In order to reduce these emissions, many carbon capture and storage technologies are being researched and developed. A major issue confronting this research is investigating these technologies on multiple scales. For example, solid sorbents experience phenomena on a quantum and macroscopic scale. Thus a bridge must be made between these two …
Elucidating And Pharmacologically Targeting Secondary Injury Cascades Following Neural Injury, Brandon P. Lucke-Wold
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 …
Real-Time Monitoring And Prediction Of The Pilot Vehicle System (Pvs) Closed-Loop Stability, Tanmay Kumar Mandal
Real-Time Monitoring And Prediction Of The Pilot Vehicle System (Pvs) Closed-Loop Stability, Tanmay Kumar Mandal
Graduate Theses, Dissertations, and Problem Reports (ETD)
Understanding human control behavior is an important step for improving the safety of future aircraft. Considerable resources are invested during the design phase of an aircraft to ensure that the aircraft has desirable handling qualities. However, human pilots exhibit a wide range of control behaviors that are a function of external stimulus, aircraft dynamics, and human psychological properties (such as workload, stress factor, confidence, and sense of urgency factor). This variability is difficult to address comprehensively during the design phase and may lead to undesirable pilot--aircraft interaction, such as pilot-induced oscillations (PIO). This creates the need to keep track of …
Three Essays On Asset Price Forecasting, Zachary Mcgurk
Three Essays On Asset Price Forecasting, Zachary Mcgurk
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation is a collection of essays examining current issues in asset price forecasting. The first chapter of this dissertation discusses the relationship between investor sentiment and excess stock return. This essay takes a novel approach in estimating investor sentiment use social media posts. In this study, I construct daily, equity-specific, investor sentiment indexes from Twitter and test the efficient market theory. We use a multinomial inverse regression to build the dictionary of relevant words and phrases for construction of the indexes. We find that our investor sentiment measure has a positive and statistically significant effect on individual stock returns. …
Muslim Education And Communal Conflict In Colonial Bengal: British Policies And Muslim Responses From 1854 To 1947, Nilanjana Paul
Muslim Education And Communal Conflict In Colonial Bengal: British Policies And Muslim Responses From 1854 To 1947, Nilanjana Paul
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation examines the development of Muslim education under British rule in Bengal. In the first part of the dissertation, I analyze why Muslims were unable to progress under colonial rule and examine some of the factors that helped to change their view towards the British from the late nineteenth century. The role played by Nawab Bahadur Abdul Latif in improving Muslim education is used here as a case study to show how elite Muslims deprived their co-religionists of Western education in order to reduce competition in the field of employment. In the second part of the dissertation, I study …
Determination Of Material Properties For Progressive Damage Analysis In Carbon Epoxy Laminates Using Abaqus, Javier Cabrera Barbero
Determination Of Material Properties For Progressive Damage Analysis In Carbon Epoxy Laminates Using Abaqus, Javier Cabrera Barbero
Graduate Theses, Dissertations, and Problem Reports (ETD)
Well-designed laminated composites do not fail suddenly but rather develop microscopic progressive damage that leads to changes in macroscopic material response, such as matrix cracks, stiffness reduction, and failure. Simulation techniques are able to predict damage initiation and evolution as a function of service conditions. A method for obtaining material properties for damage analysis of Glass and Carbon fiber composites is proposed using a progressive damage analysis (PDA) model implemented in Abaqus.;The predictive capability of Progressive Damage Analysis (PDA) methods relies on material properties that characterize the ability of the composite to resist damage initiation and to delay damage progression. …
An Examination Of The Buffering Effect Of Positive Emotions On Cardiovascular Reactivity And Recovery, Casey E. Cavanagh
An Examination Of The Buffering Effect Of Positive Emotions On Cardiovascular Reactivity And Recovery, Casey E. Cavanagh
Graduate Theses, Dissertations, and Problem Reports (ETD)
Positive emotions are related to improved physical and mental health. One potential mechanism through which positive emotions affect physical health is by reducing cardiovascular reactivity to stress and enhancing recovery from stress. The undoing hypothesis proposes physiological recovery from stressful events can be improved by induction of positive emotions. Although there is some research supporting the undoing hypothesis, the evidence is largely mixed. The purpose of the present study was to compare two methods of inducing positive emotions to determine if one method was superior at inducing positive emotions and thereby determine how each method affected cardiovascular recovery from stress …
Evaluation Of Concavity Compression Mechanism As A Possible Predictor Of Shoulder Muscle Fatigue, Suman Kanti Chowdhury
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 …
Evaluating The Protocol Of The Spectrum Of Hot Mix Asphalt Mixes Produced In West Virginia, Laura Dalton
Evaluating The Protocol Of The Spectrum Of Hot Mix Asphalt Mixes Produced In West Virginia, Laura Dalton
Graduate Theses, Dissertations, and Problem Reports (ETD)
Reviewing asphalt concrete plant-produced mixes in a laboratory setting provides further insight into pavement characteristics. Nine mix designs provided from five hot mix asphalt plant producers were evaluated throughout this research. Five mixes were Wearing I and four mixes were Base II/19 mm each of which contained various aggregate sources. First, the determination of bulk specific gravity was performed using three methods: Saturated Surface-Dry, CoreLok, and Dimensional (volumetric mass density). Moreover, assessing a mix's inherent capability to be uniformly compacted is integral in both laboratory and field evaluations. The nine mix designs were assessed for uniformity following AASHTO PP 60 …
Sensitivity Analysis Of A Relative Navigation Solution For Unmanned Aerial Vehicles In A Gnss-Denied Environment, Jeremy Hardy
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 …
Development Of Engine Activity Cycles For The Prime-Movers Of Unconventional Well Completion, Robert S. Heltzel
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 …
The Influence Of Slanted Ground Surfaces On Trunk Biomechanics And Stability During Trunk Bending, Boyi Hu
The Influence Of Slanted Ground Surfaces On Trunk Biomechanics And Stability During Trunk Bending, Boyi Hu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Previous studies have shown that working on uneven ground surfaces is linked to alternations of the lumbar active and passive tissue load sharing mechanism and reductions in spinal stability, which is highly associated with the risk of low back pain. The purpose of the current research was to investigate the changes of the lumbar flexion relaxation phenomenon and lumbar segmental stability while working on slanted ground surfaces. In experiment one, fourteen male participants performed sagittal plane, trunk flexion-extension tasks on three laterally slanted ground surfaces (flat ground, 15° and 30°) while their lumbar muscle activities and trunk kinematic performances were …
Evaluating The Performance Of A Large-Scale Facial Image Dataset Using Agglomerated Match Score Statistics, Mounica Kamireddy
Evaluating The Performance Of A Large-Scale Facial Image Dataset Using Agglomerated Match Score Statistics, Mounica Kamireddy
Graduate Theses, Dissertations, and Problem Reports (ETD)
Biometrics systems are experiencing wide-spread usage in identification and access control applications. To estimate the performance of any biometric systems, their characteristics need to be analyzed to make concrete conclusions for real time usage. Performance testing of hardware or software components of either custom or state-of-the-art commercial biometric systems is typically carried out on large datasets. Several public and private datasets are used in current biometric research. West Virginia University has completed several large scale multimodal biometric data collection with an aim to create research datasets that can be used by disciplines concerning secured biometric applications. However, the demographic and …
Large Deflection Analysis Of Composite Beams, Sai Manohari Kancharla
Large Deflection Analysis Of Composite Beams, Sai Manohari Kancharla
Graduate Theses, Dissertations, and Problem Reports (ETD)
A beam made of composite material undergoing large deflections is analyzed based on a higher-order shear deformation theory. Composite materials offer several advantages over conventional materials in the form of improved strength to weight ratio, high impact strength, corrosion resistance, and design flexibility. The Euler-Bernoulli beam theory is valid only for small deflections and may be too restrictive in a number of applications. The formulation of the large deflection analysis of composite beams is carried out using the principle of virtual work. The spatial discretization is done using an h-p version finite element method. The nonlinear large deflection equations are …
Reservoir Characterization And Flow Simulation For Co 2-Eor In The Tensleep Formation Using Discrete Fracture Networks, Teapot Dome, Wyoming, Payam Kavousi Ghahfarokhi
Reservoir Characterization And Flow Simulation For Co 2-Eor In The Tensleep Formation Using Discrete Fracture Networks, Teapot Dome, Wyoming, Payam Kavousi Ghahfarokhi
Graduate Theses, Dissertations, and Problem Reports (ETD)
The Tensleep oil reservoir at Teapot Dome, Wyoming, USA, is a naturally fractured tight sandstone reservoir that has been considered for carbon-dioxide enhanced oil recovery (CO2-EOR) and sequestration. CO2-EOR analysis requires a thorough understanding of the Tensleep fracture network. Wireline image logs from the field suggest that the reservoir fracture network is dominated by early formed structural hinge oblique fractures with interconnectivity enhanced by hinge parallel and hinge perpendicular fracture sets. Available post stack 3D seismic data are used to generate a seismic fracture intensity attribute for the reservoir fracture network. The resulting seismic fracture intensity is qualitatively correlated to …
Imaging Ductal Carcinoma Using A Hyperspectral Imaging System, Yasser M. Khouj
Imaging Ductal Carcinoma Using A Hyperspectral Imaging System, Yasser M. Khouj
Graduate Theses, Dissertations, and Problem Reports (ETD)
Hyperspectral Imaging (HSI) is a non-invasive optical imaging modality that shows the potential to aid pathologists in breast cancer diagnoses cases. In this study, breast cancer tissues from different patients were imaged by a hyperspectral system to detect spectral differences between normal and breast cancer tissues, as well as early and late stages of breast cancer. If the spectral differences in these tissue types can be measured, automated systems can be developed to help the pathologist identify suspect biopsy samples, which will improve sample throughput and assist in making critical treatment decisions. Tissue samples from ten different patients were provided …
Development Of A Computational Platform For Methane-Induced Vented Explosions, Francis R. Kronz Iii
Development Of A Computational Platform For Methane-Induced Vented Explosions, Francis R. Kronz Iii
Graduate Theses, Dissertations, and Problem Reports (ETD)
Accidental expositions in enclosures, such as industrial and residential buildings, lead to a pressure rise that may injure or kill the personnel as well as damage the construction. For example, an overpressure as small as ∼0.1 atm is enough to kill a person or break glass items, while ∼1 atm overpressures may crucially destroy the structure, including collapsing the walls. A standard remedy strategy against such a disaster is employing venting areas such as windows to allow the expanding gas to escape and thereby reducing the maximal overpressure. There are two common ways how to predict the pressure rise in …
An Analysis Of Student Approaches To Solving Optimization Problems In First Semester Calculus, Renee Larue
An Analysis Of Student Approaches To Solving Optimization Problems In First Semester Calculus, Renee Larue
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this dissertation is to investigate how students think about and understand optimization problems in first semester calculus. To solve an optimization problem, one must identify the quantity to be maximized or minimized and then construct an optimizing function modeling the scenario described in the problem, particularly paying attention to how the desired quantity varies under the given constraint. Once this optimizing function has been constructed, the problem solver uses calculus and algebra skills to analytically find the absolute maximum or minimum of the function in the realistic domain of the problem. These problems are notoriously difficult for …