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Radio Transients And Their Environments, Kaustubh Rajwade
Radio Transients And Their Environments, Kaustubh Rajwade
Graduate Theses, Dissertations, and Problem Reports (ETD)
The interstellar medium is the principal ingredient for star formation and hence, it is necessary to study the properties of the interstellar medium. Radio sources in our Galaxy and beyond can be used as a probe of the intervening medium. In this dissertation, I present an attempt to use radio transients like pulsars and fast radio bursts and their interactions with the environment around them to study interstellar medium. We show that radio emission from pulsars is absorbed by dense ionized gas in their surroundings, causing a turnover in their flux density spectrum that can be used to reveal information …
Reimagining The Ssmint Software Package, Kelly Cecil
Reimagining The Ssmint Software Package, Kelly Cecil
Graduate Theses, Dissertations, and Problem Reports (ETD)
We examine two proposed indexing algorithms taking advantage of the new SSMinT libraries. The two algorithms primarily differ in their selection of documents for learning. The batch indexing method selects some random number of documents for learning. The iterative indexing method uses a single randomly selected document to discover semantic signatures, which are then used to find additional related documents. The batch indexing method discovers one to three semantic signatures per document, resulting in poor clustering performance as evaluated by human cross-validation of clusters using the Adjusted Rand Index. The iterative indexing method discovers more semantic signatures per document, resulting …
Design And Development Of A Novel Nanoparticle Aerosol Generation System For Research Applications, Justin R. Chambers
Design And Development Of A Novel Nanoparticle Aerosol Generation System For Research Applications, Justin R. Chambers
Graduate Theses, Dissertations, and Problem Reports (ETD)
Nanoparticles have become of great interest within the scientific community for their use in diverse applications. With this rapidly evolving field, new nano-sized compounds are being developed and used for a variety of reasons. Nanoparticle aerosol technology, aerosolization and dispersion of nano-compounds, has many novel applications and can be used to support current research efforts. This may include anything from drug delivery techniques to industrial processes. To aid these processes, new methods of aerosol generation and dispersion are needed to meet these future needs. This research and development is being conducted to expand upon a novel nanoparticle aerosol generator as …
Point Cloud Processing Algorithms For Environment Understanding In Intelligent Vehicle Applications, Ahmed Cheikh Sidiya
Point Cloud Processing Algorithms For Environment Understanding In Intelligent Vehicle Applications, Ahmed Cheikh Sidiya
Graduate Theses, Dissertations, and Problem Reports (ETD)
Understanding the surrounding environment including both still and moving objects is crucial to the design and optimization of intelligent vehicles. In particular, acquiring the knowledge about the vehicle environment could facilitate reliable detection of moving objects for the purpose of avoiding collisions. In this thesis, we focus on developing point cloud processing algorithms to support intelligent vehicle applications. The contributions of this thesis are three-fold.;First, inspired by the analogy between point cloud and video data, we propose to formulate a problem of reconstructing the vehicle environment (e.g., terrains and buildings) from a sequence of point cloud sets. Built upon existing …
Analysis Tools For Small And Big Data Problems, Juan Chen
Analysis Tools For Small And Big Data Problems, Juan Chen
Graduate Theses, Dissertations, and Problem Reports (ETD)
The dissertation focuses on two separate problems. Each is informed by real-world applications. The first problem involves the assessment of an ordinal measurement system in a manufacturing setting. A random-effects model is proposed that is applicable to this repeatability and reproducibility context, and a Bayesian framework is adopted to facilitate inference. This first problem is an example of an analysis tool to solve a small data problem.;The second problem involves statistical machine learning applied to big data problems. As more and more data become available, a need increases to automate the ability to identify particularly relevant features in a prediction …
Integer Flows And Circuit Covers Of Graphs And Signed Graphs, Jian Cheng
Integer Flows And Circuit Covers Of Graphs And Signed Graphs, Jian Cheng
Graduate Theses, Dissertations, and Problem Reports (ETD)
The work in Chapter 2 is motivated by Tutte and Jaeger's pioneering work on converting modulo flows into integer-valued flows for ordinary graphs. For a signed graphs (G, sigma), we first prove that for each k ∈ {lcub}2, 3{rcub}, if (G, sigma) is (k -- 1)-edge-connected and contains an even number of negative edges when k = 2, then every modulo k-flow of (G, sigma) can be converted into an integer-valued ( k + 1)-ow with a larger or the same support. We also prove that if (G, sigma) is odd-(2p+1)-edge-connected, then (G, sigma) admits a modulo circular (2 + …
The Paganini Variations: A Study Of Selected Works By Liszt, Brahms, Rachmaninoff, Lutoslawski, And Muczynski, Youna Choi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Caprice in A minor, Op. 1, No. 24 for solo violin by Niccolo Paganini has been a great inspiration for many composers. This study investigates five compositions that are based on the Paganini theme: Liszt, Brahms, Rachmaninoff, Lutos?awski, and Muczynski. Although these five composers utilized the same melodic material as their compositional source, their works are stylistically much different, from a typical nineteenth century idiom used by Liszt to the jazz-inspired harmony used by Muczynski.;Each chapter includes a general background and analytical aspects of the individual work, and is followed by performance guidelines. The performance guidelines not only deal with …
A Multi-Agent Design For Smart Distribution Automation System With Distributed Energy Resources And Microgrids, Sridhar Chouhan
A Multi-Agent Design For Smart Distribution Automation System With Distributed Energy Resources And Microgrids, Sridhar Chouhan
Graduate Theses, Dissertations, and Problem Reports (ETD)
The proliferation of Smart Grid technologies such as distributed energy resources (DER) and microgrids has resulted in new opportunities and challenges to existing Distribution Automation (DA) solutions. A novel hybrid Multi-Agent System (MAS) Fault Location, Isolation, and Restoration (FLIR) solution is proposed for electric distribution systems with different types of distributed generation (DG) resources and microgrids. The main goal of the MAS is to locate and isolate the fault and then to automatically reenergize fault-free portions of the network to restore power to as many customers as possible while maintaining system constraints like voltage and thermal capacity limits.;Determination of the …
Analytical And Computational Studies Of Gaseous And Dusty Combustion: From The Impacts Of Local Flame Speed Variations To A Global Predictive Mining Fire Scenario, Sinan Demir
Graduate Theses, Dissertations, and Problem Reports (ETD)
Accidental fires and explosions in gaseous environments with dust impurities constitute a tremendous hazard for dwelling and office buildings as well as for industries dealing with explosive materials such as flammable gasses and combustible dust. Among these industries, coal mining traditionally exhibits one of the highest occupational fatality and injury rates, often due to methane/air/coal-dust catastrophes claiming many lives every year world wide. There is therefore a critical need to reduce the risk of such accidents, or at least to mitigate their disastrous consequences. For this sake, the analytical and computational studies of the present Dissertation reveal the mechanism of …
Evaluation Of Shared Space To Reduce Traffic Congestion: A Case Study On West Virginia University's Downtown Campus, Colin Frosch
Evaluation Of Shared Space To Reduce Traffic Congestion: A Case Study On West Virginia University's Downtown Campus, Colin Frosch
Graduate Theses, Dissertations, and Problem Reports (ETD)
Pedestrian and vehicle interactions often lead to conflicts that bring about safety, traffic congestion, and priority or right of way issues. Common methods used in the past to combat said issues have largely relied on the principle of separating the motions of pedestrians and vehicles by means of bridges, tunnels, signals, and access restrictions. A different approach known as share space aims to solve the same problems with a less structured and defined environment which instead places more reliance on human interaction and perception. Although it has been used in multiple scenarios across Europe with success, instances of shared spaces …
Gas-Phase Protein Structure Characterization With Ion Mobility Mass Spectrometry And Molecular Dynamics Simulations, Samaneh Ghassabi Kondalaji
Gas-Phase Protein Structure Characterization With Ion Mobility Mass Spectrometry And Molecular Dynamics Simulations, Samaneh Ghassabi Kondalaji
Graduate Theses, Dissertations, and Problem Reports (ETD)
Over the last few decades, the widespread application of soft ionization techniques such as electrospray ionization (ESI) coupled with mass spectrometry (MS) facilitated the characterization of large biomolecules in the gas phase. Under suitable conditions and during the short timescale of the desolvation process associated with ESI (10-12-102 s), the solvent-free protein ions preserve significant portions of their native solution-phase structure and are presumed to be kinetically protected from thermodynamic destabilization such as unfolding-refolding processes occurring in the gas phase that could yield an "inside-out" structure.;The combination of ESI with ion mobility spectrometry- mass spectrometry (IMS-MS) provides information regarding higher-order …
An Abridged Study, Jacob Guzan
An Abridged Study, Jacob Guzan
Graduate Theses, Dissertations, and Problem Reports (ETD)
This MFA thesis addresses work completed and presented in a thesis exhibition at West Virginia University, the conceptual underpinnings of this work, and the personal motivations for such conceptual lines of inquiry. Focusing on traditional fine art practices of drawing and intaglio printmaking, the accurate reproduction of reality is a strategy for changing the context in which utilitarian infrastructural objects are seen. The goal of this project is to shift infrastructure from "eyesore" status to a state of aesthetic appreciation. Through visual isolation, these objects are given the opportunity to stand as discrete and sublime forms. The objects cease to …
Teaching Without A Net: Experiencing Mandatory Curriculum Change, Stephen Ross Higgins
Teaching Without A Net: Experiencing Mandatory Curriculum Change, Stephen Ross Higgins
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation reports a qualitative study that explored the reconstructed narratives of 4 West Virginia 7th grade social studies teachers. A methodology informed by narrative inquiry guided the research design, including the methods for data collection and data analysis. Two questions served as guideposts throughout the research process: What do the stories of the participants tell us about the ways in which teachers engage as developers of curriculum when curriculum change is mandated? In what ways did their stories of implementing a mandated change impact their professional identities? To explore these questions, I conducted 3 semi-structured interviews with each participant. …
Developing A Smart Proxy For Predicting The Fluid Dynamic In Dambreak Flow Simulation By Using Artificial Intelligence, Seyed Sina Hosseini Boosari
Developing A Smart Proxy For Predicting The Fluid Dynamic In Dambreak Flow Simulation By Using Artificial Intelligence, Seyed Sina Hosseini Boosari
Graduate Theses, Dissertations, and Problem Reports (ETD)
Multiphase flow simulations are essential methods for providing information such as the evolution of phase fraction (gas, liquid and solid), velocities, pressure, temperature and flow regimes at every time during a process. Dynamic flow simulations also help reservoir, drilling, and production engineers to develop a proper well design. DamBreak problem is one of the most well-known problems in computational fluid dynamics (CFD); it is a dynamic hydraulic phenomena and the numerical simulation requires sophisticated mathematical modeling. OpenFOAM, is used to run CFD simulations in this thesis.;One of the main issues in CFD is that the simulations are time-consuming. In this …
Aggregating Deep Features For Image Retrieval, Mohammad Eiad Kazkaz
Aggregating Deep Features For Image Retrieval, Mohammad Eiad Kazkaz
Graduate Theses, Dissertations, and Problem Reports (ETD)
Measuring visual similarity between two images is useful in several multimedia applications such as visual search and image retrieval. However, measuring visual similarity between two images is an ill-posed problem which makes it a challenging task.This problem has been tackled extensively by the computer vision and machine learning communities. Nevertheless, with the recent advancements in deep learning, it is now possible to design novel image representations that allow systems to measure visual similarity more accurately than existing and widely adopted approaches, such as Fisher vectors. Unfortunately, deep-learning-based visual similarity approaches typically require post-processing stages that can be computationally expensive. To …
Data Conversion Within Energy Constrained Environments, Brandon M. Kelly
Data Conversion Within Energy Constrained Environments, Brandon M. Kelly
Graduate Theses, Dissertations, and Problem Reports (ETD)
Within scientific research, engineering, and consumer electronics, there is a multitude of new discrete sensor-interfaced devices. Maintaining high accuracy in signal quantization while staying within the strict power-budget of these devices is a very challenging problem. Traditional paths to solving this problem include researching more energy-efficient digital topologies as well as digital scaling.;This work offers an alternative path to lower-energy expenditure in the quantization stage --- content-dependent sampling of a signal. Instead of sampling at a constant rate, this work explores techniques which allow sampling based upon features of the signal itself through the use of application-dependent analog processing. This …
A Photogrammetry Program For Physical Modeling Of Subsurface Subsidence Process, Yujia Lian
A Photogrammetry Program For Physical Modeling Of Subsurface Subsidence Process, Yujia Lian
Graduate Theses, Dissertations, and Problem Reports (ETD)
Safe and economic longwall coal extraction requires a good knowledge of overburden strata characteristics and understanding of overburden strata movement in response to the full extraction mining. Subsidence induced overburden movement will affect overlying mining, surface and subsurface water bodies, and methane emission and migration in the overburden strata. Therefore, an understanding of subsurface strata movement is essential for optimal layout of multiple seam mining, protecting water resources, and designing of gob hole patterns for longwall degasification.;Physical simulation experiments play an important role in mining engineering research by allowing visual observations of strata movement in the mining process. In recent …
Charge Transfer Dissociation Mass Spectrometry Of Biomolecules, Pengfei Li
Charge Transfer Dissociation Mass Spectrometry Of Biomolecules, Pengfei Li
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recent advances in many biological disciplines are closely related to the development and application of new mass spectrometry techniques. The investigation of gas-phase ion activation techniques is one of the active research fields. Although researchers have developed a variety of ion activation techniques, they all suffer from certain intrinsic limitations---either limited in the types of fragment ions, or limited by the inefficiency with low charge-state precursor ions. Most of the ion activation techniques are not commercially available, and are at their developing stages.;As an attempt to explore new possibilities of fragmenting a gas-phase ion, charge transfer dissociation (CTD) was developed …
Analysis Of Model-Aided Navigation Of Unmanned Aerial Vehicles, Stephane D'Urso
Analysis Of Model-Aided Navigation Of Unmanned Aerial Vehicles, Stephane D'Urso
Graduate Theses, Dissertations, and Problem Reports (ETD)
To overcome the rapid and unbounded error growth of low-cost Inertial Navigation Systems (INS), aircraft localization methods commonly compensate for Inertial Measurement Unit (IMU) sensor errors by integrating them with Global Positioning System (GPS) measurements via a Kalman Filter. However, over the past decade, the potential of GPS jamming or even spoofing GPS signals has forced the research community to focus on the development of GPS-denied navigation technologies. Among the GPS-denied techniques, one approach that has been considered is the use of a Vehicle Dynamic Models (VDM) to reduce the rate at which an INS becomes unusable. As such, this …
A Discussion Of Art Therapy Approaches Used In Classroom Activities To Help Students With Emotional And Behavioral Issues, Ashley Nichol Elliott
A Discussion Of Art Therapy Approaches Used In Classroom Activities To Help Students With Emotional And Behavioral Issues, Ashley Nichol Elliott
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this paper was to inform the reader of the benefits of using art therapy activities in art lessons as a way to help students' process emotional and behavioral issues. New and future art educators are not equipped to handle the wide range of issues that students face everyday. This is especially true for the students in the West Virginia public school system. As in larger, more urban locations, many students here deal with drugs, violence, bullying, abuse, and others contemporary social stressors. In this paper, I utilized my own personal experiences, literary research, experimentation, and observations of …
Elementary Educators' Attitudes About The Utility Of Educational Robotics And Their Ability And Intent To Use It With Students, Todd I. Ensign
Elementary Educators' Attitudes About The Utility Of Educational Robotics And Their Ability And Intent To Use It With Students, Todd I. Ensign
Graduate Theses, Dissertations, and Problem Reports (ETD)
Educational robotics (ER) combines accessible and age-appropriate building materials, programmable interfaces, and computer coding to teach science and mathematics using the engineering design process. ER has been shown to increase K-12 students' understanding of STEM concepts, and can develop students' self-confidence and interest in STEM. As educators struggle to adapt their current science teaching practices to meet the new interdisciplinary nature of the Next Generation Science Standards, ER has the potential to simultaneously integrate STEM disciplines, engage and inspire students in mathematics and science, and build connections to STEM careers. One challenge is a lack of documented models for preparing …
Modeling And Design Optimization Of Multifunctional Membrane Reactors For Direct Methane Aromatization, Nicholas J. Fouty
Modeling And Design Optimization Of Multifunctional Membrane Reactors For Direct Methane Aromatization, Nicholas J. Fouty
Graduate Theses, Dissertations, and Problem Reports (ETD)
Due to the recent increase of natural gas production in the U.S., utilizing natural gas for higher-value chemicals has become imperative. Direct methane aromatization (DMA) is a promising process used to convert methane to benzene, but it is limited by low conversion of methane and rapid catalyst deactivation by coking. Past work has shown that membrane separation of the hydrogen produced in the DMA reactions can dramatically increase the methane conversion by shifting the equilibrium toward the products, but it also increases coke production. Oxygen introduction into the system has been shown to inhibit this coke production while not inhibiting …
Complexity Aware C-Ran Scheduling For Ldpc Codes Over Bec, Kyle Gordon Whetzel
Complexity Aware C-Ran Scheduling For Ldpc Codes Over Bec, Kyle Gordon Whetzel
Graduate Theses, Dissertations, and Problem Reports (ETD)
Effective transmission of data over a noisy wireless channel is a vital part of today's high speed technology driven society. In a wireless cell network, information is sent from mobile users to base stations. The information being transmitted is protected by error-control codes. In a conventional architecture the signal processing, including error-control decoding, is performed locally at each base station. Recently, a new architecture has emerged called Centralized Radio Access Network (C-RAN), which involves the centralized processing of the signals in a computing cloud. Using a computing cloud allows computational resources to be pooled, which improves utilization and efficiency. When …
Impact Of Formation Damage Due To Perforation On Well Productivity, Elmouzemill Abrahim Adam
Impact Of Formation Damage Due To Perforation On Well Productivity, Elmouzemill Abrahim Adam
Graduate Theses, Dissertations, and Problem Reports (ETD)
Formation Damage can be defined as any reduction in near wellbore permeability which results from drilling, completion, production, injection, attempted stimulation or any other well intervention. In the majority of completions, once the reservoir has been drilled, production casing or a liner is run into the well and cemented in place. To provide the communication between the reservoir and the wellbore, it is necessary to perforate through the walls of the cemented casing or a liner and penetrate into the formation. Currently horizontal well bores completed with extensive perforation are conducted as several clusters along the well bore. Perforation can …
Analysis Of Multi-Resolution Data Aggregation Using Push-Assisted Random Walks In Mobile Ad-Hoc Network (Manet), Sowmya Srinivasapura Devaraja
Analysis Of Multi-Resolution Data Aggregation Using Push-Assisted Random Walks In Mobile Ad-Hoc Network (Manet), Sowmya Srinivasapura Devaraja
Graduate Theses, Dissertations, and Problem Reports (ETD)
ABSTRACT Analysis of Multi-Resolution Data Aggregation using Push-assisted Random Walks in Mobile Ad-hoc Networks (MANETs) Sowmya Srinivasapura Devaraja Data Aggregation in Mobile Ad-hoc Network (MANET) has proven challenging because of changing topology. Structure-based models like tree-based, cluster-based and chain-based have high maintenance cost. In earlier works, different forms of biased random walks have been verified to be effective without need for structure maintenance. The key idea in the protocol was to use one or more tokens that are circulated using biased random walks to effectively compute the data aggregation. One such protocol is EZ-AG that uses "Push-assisted Self-Repelling Random Walks". …
Extending The Utilization Of Real Time Data For Pressure Transient Analysis., Jummanh Eyad Aldiwan
Extending The Utilization Of Real Time Data For Pressure Transient Analysis., Jummanh Eyad Aldiwan
Graduate Theses, Dissertations, and Problem Reports (ETD)
Owing to the gradual fall in prices and the constant increase in reliability of Permanent Down-hole Measurement System (PDHMS), its installation has tremendously grown in number over the recent years. The advantages of this venture, however, can only be achieved when it is improved to a source for reservoir characterization from mere surveillance and monitoring. This study evaluates workflows and systems that have been installed to change the enormous amounts of data, such as temperature, flow rate and pressure, into practicable information to enhance field performance and development. In addition to using data from real cases from intelligent fields (I-Field) …
Optical Aberrations And Their Effect On The Centroid Location Of Unresolved Objects, Lylia Benhacine
Optical Aberrations And Their Effect On The Centroid Location Of Unresolved Objects, Lylia Benhacine
Graduate Theses, Dissertations, and Problem Reports (ETD)
Optical data from point sources of light plays a key role in systems from many different industries. In real optical systems, the photons from point sources are distributed in a pattern on the focal plane. This pattern is described by the Point Spread Function (PSF). Centroiding, defined here as calculating the center of a PSF, provides data that can subsequently be used in various state estimation problems. Thus, it is crucial to determine expected centroid accuracy so that uncertainty can be accounted for. Manufacturing defects and real-world effects affect the structure of a PSF. Much of this structure is often …
Whole-Farm Phosphorus Management In West Virginia Beef Cattle Operations, Justin Brackenrich
Whole-Farm Phosphorus Management In West Virginia Beef Cattle Operations, Justin Brackenrich
Graduate Theses, Dissertations, and Problem Reports (ETD)
Demand for animal proteins is increasing worldwide, spurring an increase in forage based agricultural production. Forage based agriculture utilizes grass and legume crops from areas which are not suited for row-crop production to feed ruminant animals. These systems provide increased animal proteins to consumer markets, while using minimal amounts of cereal crops that would otherwise be used for human consumption. However, forage based agriculture does not come without a risk of environmental degradation. The US EPA determined that agriculture non-point source (NPS) pollution is among the top three causes of phosphorus (P) related surface water impairment and accounts for an …
Simulation Of Venturi Tube Design For Column Flotation Using Computational Fluid Dynamics, Wan Wang
Simulation Of Venturi Tube Design For Column Flotation Using Computational Fluid Dynamics, Wan Wang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Froth flotation is one of the most important methods in mineral processing. Previous studies have found that using cavitation bubbles reduces both energy consumption and operating costs. Hydrodynamic cavitation is the most economical method used for creating tiny bubbles for flotation. In this study, the efficiency of cavitation bubble generating devices and their geometry design is analyzed using computational fluid dynamics (CFD).;To optimize the geometric design of the venturi tube, a response surface method was conducted for evaluating the effect of six important parameters affecting the efficiency of the venturi tube. Critical velocities of cavitation of different designs were compared. …
Storage Capacity Estimation Of Commercial Scale Injection And Storage Of Co2 In The Jacksonburg-Stringtown Oil Field, West Virginia, Zhi Zhong
Graduate Theses, Dissertations, and Problem Reports (ETD)
Geological capture, utilization and storage (CCUS) of carbon dioxide (CO2) in depleted oil and gas reservoirs is one method to reduce greenhouse gas emissions with enhanced oil recovery (EOR) and extending the life of the field. Therefore CCUS coupled with EOR is considered to be an economic approach to demonstration of commercial-scale injection and storage of anthropogenic CO2. Several critical issues should be taken into account prior to injecting large volumes of CO2, such as storage capacity, project duration and long-term containment. Reservoir characterization and 3D geological modeling are the best way to estimate the theoretical CO 2 storage capacity …