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Graduate Theses, Dissertations, and Problem Reports (ETD)

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Reimagining The Ssmint Software Package, Kelly Cecil Jan 2017

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 …

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Design And Development Of A Novel Nanoparticle Aerosol Generation System For Research Applications, Justin R. Chambers Jan 2017

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 …

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Analysis Tools For Small And Big Data Problems, Juan Chen Jan 2017

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 …

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A Multi-Agent Design For Smart Distribution Automation System With Distributed Energy Resources And Microgrids, Sridhar Chouhan Jan 2017

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 …

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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 Jan 2017

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 …

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Evaluation Of Damaged Concrete Members Strengthened With Cfrp-Epoxy And Hfrp Polyurethane Systems, Krishna Tulasi Gadde Jan 2017

Evaluation Of Damaged Concrete Members Strengthened With Cfrp-Epoxy And Hfrp Polyurethane Systems, Krishna Tulasi Gadde

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fiber reinforced polymer (FRP) composite materials offer economical solutions to repair and rehabilitate the aging civil infrastructure at a fraction of the huge replacement cost. Glass and carbon FRP fabrics, bars, and shapes have been field implemented for the construction and rehabilitation of reinforced concrete (RC) structures. This research work aims at evaluating the mechanical and bond properties of Fiber Reinforced Polymer (FRP) composites for concrete structural applications. Both CFRP and Hybrid Carbon/Glass FRP (HFRP) have been investigated for repair and rehabilitation of civil infrastructure constructed of concrete. Concrete cylinders of different compressive strengths were tested with 1, 2, and …

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Gas-Phase Protein Structure Characterization With Ion Mobility Mass Spectrometry And Molecular Dynamics Simulations, Samaneh Ghassabi Kondalaji Jan 2017

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 …

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Reactions Of Metal Carbides To Produce Carbon, Jeremy Hardinger Jan 2017

Reactions Of Metal Carbides To Produce Carbon, Jeremy Hardinger

Graduate Theses, Dissertations, and Problem Reports (ETD)

Calcium carbide was historically used to reduce potassium metal from potassium fluoride as described in a 1922 patent. This was prior to the discovery of electrolytic synthesis, which replaced the carbide process in less than five years. A byproduct of this process was elemental carbon. This carbon was unanalyzed at the time. The object of this research was to analyze carbon produced in reactions similar to this and to determine if this reaction could be carried out under milder conditions. It was found that the reaction is part of a family of reactions, and would proceed with a number of …

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Steam Reforming Of Ch4 Using Ni- Substituted Pyrochlore Catalysts, Daniel J. Haynes Jan 2017

Steam Reforming Of Ch4 Using Ni- Substituted Pyrochlore Catalysts, Daniel J. Haynes

Graduate Theses, Dissertations, and Problem Reports (ETD)

The steam reforming of methane (SMR) continues to remain an important industrial reaction for large-scale production of H2 as well as synthesis gas mixtures which can be used for the production of useful chemicals (e.g. methanol). Although SMR is a rather mature technology, traditional nickel based catalysts used industrially are subjected to severe temperatures and reaction conditions, which lead to irreversible activity loss through sintering, support collapse, and carbon formation. Pyrochlore-based mixed oxide have been identified as refractory materials that can be modified through the substitution of catalytic metals and other promoting species into the structure to mitigate these issues …

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Dual Targeting Of The Mesenchymal And Amoeboid Pathways: A Viable Therapy Against Metastatic Breast Cancer, Brandon C. Jones Jan 2017

Dual Targeting Of The Mesenchymal And Amoeboid Pathways: A Viable Therapy Against Metastatic Breast Cancer, Brandon C. Jones

Graduate Theses, Dissertations, and Problem Reports (ETD)

Metastasis from the primary tumor site is the major cause of death in breast cancer, and acquisition of migration capacity is a key element for successful metastasis. Recently, it was found that expression of NEDD9, a focal adhesion associated scaffolding protein, could be used to switch between two types of single cell movement known as mesenchymal and amoeboid. Control of this "switch" can potentially open up new avenues of treatment against cancer metastasis. Simultaneous inhibition of both types of single cell movement may prevent cancer migration, thus decreasing cancer spreading and increasing survival of cancer patients. For example, forcibly pushing …

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Data Conversion Within Energy Constrained Environments, Brandon M. Kelly Jan 2017

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 …

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Corticospinal Excitability During Locomotion In Humans, Lisa Kogan Jan 2017

Corticospinal Excitability During Locomotion In Humans, Lisa Kogan

Graduate Theses, Dissertations, and Problem Reports (ETD)

The coordination between signals from cortical structures and spinal segmental pathways responsible for the control of locomotion remains a contentious issue in human motor control. The signals are known to be integrated, but the nature of these neural calculations is unknown. To understand these interactions in humans, noninvasive cortical stimulation techniques can be combined with detailed analyses of muscle activity patterns in locomotor tasks.;In this study, I tested the relationship between corticospinal inputs and the forward velocity of each limb. Transcranial magnetic stimulation (TMS) was used to elicit motor evoked potentials (MEPs) in 12 healthy human volunteers during locomotion on …

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Analyzing The Costs Of Nontraditional Choices: Role Congruity Theory And College Student's Perception Of Attractiveness, Brittany M. Kowalski Jan 2017

Analyzing The Costs Of Nontraditional Choices: Role Congruity Theory And College Student's Perception Of Attractiveness, Brittany M. Kowalski

Graduate Theses, Dissertations, and Problem Reports (ETD)

Researchers have shown that both women and men with traits incongruent to their gender roles are viewed as less competent and are less acceptable than those whose traits conform to their gender roles. The present study looks at the effect of role congruity between gender, occupational status and personality traits and the effect that this has on the evaluation of potential romantic partner attractiveness. Little research has looked at the effect of both status characteristics such as occupation or college major and personal traits such as personality, likes-dislikes or hobbies. A vignette experiment was conducted in which college students were …

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A Work Flow And Evaluation Of Using Unmanned Aerial Systems For Deriving Forest Stand Characteristics In Mixed Hardwoods Of West Virginia, Henry Liebermann Jan 2017

A Work Flow And Evaluation Of Using Unmanned Aerial Systems For Deriving Forest Stand Characteristics In Mixed Hardwoods Of West Virginia, Henry Liebermann

Graduate Theses, Dissertations, and Problem Reports (ETD)

Forest inventory information is a principle driver for forest management decisions. Information gathered through these inventories provides a summary of the condition of forested stands. The method by which remote sensing aids land managers is changing rapidly. Imagery produced from unmanned aerial systems (UAS) offer high temporal and spatial resolutions and have added another approach to small-scale forest management. UAS imagery is less expensive and easier to coordinate to meet project needs compared to traditional manned aerial imagery. This study focused on producing an efficient and approachable work flow for producing forest stand board foot volume estimates from UAS imagery …

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Analysis Of Model-Aided Navigation Of Unmanned Aerial Vehicles, Stephane D'Urso Jan 2017

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 …

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Comparison Of Methods Of Measuring Electronic Cigarette Puff Topography, Nicholas Felicione Jan 2017

Comparison Of Methods Of Measuring Electronic Cigarette Puff Topography, Nicholas Felicione

Graduate Theses, Dissertations, and Problem Reports (ETD)

To evaluate properly the potential benefits and harms of electronic cigarettes (ECIGs), it is important to evaluate how individuals puff from an electronic cigarette, or their puff topography. This measure, which includes indices of puff number, duration, volume, interpuff interval, and flow rate, can be used to predict exposure to toxicants including nicotine. Puff topography has been studied extensively for cigarette smokers, but not ECIG users. The studies that have involved electronic cigarette topography measurement have done so using devices that have not been thoroughly validated or proven reliable. Thus, the purpose of this study was to evaluate methods of …

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Modeling And Design Optimization Of Multifunctional Membrane Reactors For Direct Methane Aromatization, Nicholas J. Fouty Jan 2017

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 …

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A System To Secure Websites And Educate Students About Cyber Security Through Crowdsourcing, Chitrangi Sameer Doshi Jan 2017

A System To Secure Websites And Educate Students About Cyber Security Through Crowdsourcing, Chitrangi Sameer Doshi

Graduate Theses, Dissertations, and Problem Reports (ETD)

Startups are innovative companies who have ideas for the betterment of the society. But, due to limited resources, and highly expensive testing procedures, they invest less time and money in securing their website and web applications. Furthermore, cyber security education lacks integrating practical knowledge with educational theoretical materials. Recognizing, the need to educate both startups and students about cyber security, this report presents Secure Startup - a novel system, that aims to provide startups with a platform to protect their website in a costeffective manner, while educating students about the real-world cyber skills. This system finds potential security problems in …

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Central Supply Company Noise Survey., Janice Drelick Jan 2017

Central Supply Company Noise Survey., Janice Drelick

Graduate Theses, Dissertations, and Problem Reports (ETD)

Central Supply Company was interested in having a noise survey completed at two locations, a concrete batch plant and a block manufacturing plant. Noise levels were measured to evaluate the current hearing conservation program and to determine potential overexposure, compliance, and appropriateness of protection. Employee dosimetry results showed that sound levels at the concrete batch plant were not high enough to require employee enrollment in a hearing conservation program. At the block manufacturing plant, employee dosimetry results showed there was a need for a hearing conservation program, including a need for hearing protection to be worn at all times during …

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Synthesis Of Znse@Zns Core-Shell Quantum Dots (Qds) For Bioimaging Applications, Yang He Jan 2017

Synthesis Of Znse@Zns Core-Shell Quantum Dots (Qds) For Bioimaging Applications, Yang He

Graduate Theses, Dissertations, and Problem Reports (ETD)

To date, malignancies have been categorized as one of the leading life-threatening diseases worldwide, mainly because of lack of imaging devices for detection of cancers at its early stage of development. In this case, the emergence of novel strategies which can be effectively used in early stage cancer detection and therapy continue to become an inevitable need and indispensable scope of and cancer field researchers, for which implementation of new technologies are required to advance the early detection and management of cancers. The biomedical imaging of the organs in the living system offers a viable approach to label and image …

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Exposure Monitoring And Controlling Hazards In Additive Manufacturing Processes, Tyler John Kusich Jan 2017

Exposure Monitoring And Controlling Hazards In Additive Manufacturing Processes, Tyler John Kusich

Graduate Theses, Dissertations, and Problem Reports (ETD)

Additive manufacturing (AM) is a relatively new field that promises advancement in various disciplines such as medical, aerospace, and consumer products. One of the recent developments in additive manufacturing is with the use of metal powders, such as aluminum, nickel, and chromium. AM processes are projected to become more common as the technology advances and the applications spread into a variety of different industries. There are several health and safety risks that have been identified with the use of these powders, including combustible dust and health exposure issues. This study was aimed at looking at some of the issues with …

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Study Of Stress Anisotropy On Shale Rock Permeability, Charbel Nasr Jan 2017

Study Of Stress Anisotropy On Shale Rock Permeability, Charbel Nasr

Graduate Theses, Dissertations, and Problem Reports (ETD)

Permeability is one of the most time-consuming rock petro-physical properties to measure, especially in the case of shales and tight rocks with Micro-Darcy ranges. Several unsteady state methods like GRI, Pressure Pulse Decay (PPD) have been applied to measure permeability but unfortunately results are not accurate due to the limitations to in situ stress conditions, repeatability and reproducibility issues. To overcome this limitations a system under steady state condition and with equal confining and axial pressure has been developed, obtaining remarkable permeability measurements. This system was designed and assembled by Zamirian et al 2015 referred to as Precision Petrophysical Analysis …

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Gas Composition Effects In A Ci Engine Converted To Si Natural Gas Operation, Hemanth Kumar Bommisetty Jan 2017

Gas Composition Effects In A Ci Engine Converted To Si Natural Gas Operation, Hemanth Kumar Bommisetty

Graduate Theses, Dissertations, and Problem Reports (ETD)

Low-carbon fuels such as natural gas (NG) have the potential to lower the demand of petroleum-based fuels, reduce engine-out emissions, and increase IC engine thermal efficiency. One of the most rapid and efficient use of NG in the transportation sector would be as a direct replacement of the diesel fuel in compression ignition (CI) engines without any major engine modifications to the combustion chamber such as new pistons and/or engine head. An issue is the large variation in NG composition with the location and age of the gas well across U.S., which would affect engine operation, as well as the …

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Whole-Farm Phosphorus Management In West Virginia Beef Cattle Operations, Justin Brackenrich Jan 2017

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 …

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Preparation Of Sicnfs Composite Anode By Electrophoretic Deposition (Epd), Meng Yao Jan 2017

Preparation Of Sicnfs Composite Anode By Electrophoretic Deposition (Epd), Meng Yao

Graduate Theses, Dissertations, and Problem Reports (ETD)

Recently, lithium ion batteries (LIBs) have been widely used in the field of portable electronic devices and electric vehicles due to high adaptability, high working voltage and low toxicity. However, traditional electrode materials have greatly limited the future of LIBs because of their low theoretical specific capacities; meanwhile, new electrode materials always need to be prepared by complicated and expensive methods, indicating the small probability of large-scale promotion. In this study, the Si/CNFs composite film anode without any binder by a simple and effective method - electrophoretic deposition (EPD) - is developed, which exhibits improved electrochemical properties.;This thesis is firstly …

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Climatic And Ecohydrologic Linkages Of Net Ecosystem Exchanges (Nee) Across Diverse Ecosystems, Mohammed Tamim Zaki Jan 2017

Climatic And Ecohydrologic Linkages Of Net Ecosystem Exchanges (Nee) Across Diverse Ecosystems, Mohammed Tamim Zaki

Graduate Theses, Dissertations, and Problem Reports (ETD)

Net ecosystem exchange (NEE) indicates the balance between photosynthetic uptake and respiration of CO2 in a biological system. A large set of climatic and ecohydrological variables drives the dynamics of NEE through complex, interacting biophysical processes. The relative climatic and ecohydrologic linkages of NEE were determined in this study for different temporal scales (i.e., 1-hour, 1-day, 8-day, 15-day, and 30-day) by utilizing a systematic data analytics methodology. Pearson correlation matrix and factor analysis were employed to identify the interrelations and grouping patterns among the biophysical variables. The climatic and ecohydrologic linkages of NEE were then estimated using bootstrapped (1000 iterations) …

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The Impact Of Shale Gas On Gas Storage Performance, Arya Maher Sattari Jan 2017

The Impact Of Shale Gas On Gas Storage Performance, Arya Maher Sattari

Graduate Theses, Dissertations, and Problem Reports (ETD)

The advances in technology has resulted in significant gas production from the shale formations across the United States. Marcellus Shale which spans most of the Appalachian Basin is one the most prolific gas producers in the United States. Marcellus Shale gas has a distinctly different composition from the existing Northern Appalachian typical dry natural gas. As gas production from Marcellus shale has increased, so has the amount of the shale gas in the natural gas transportation system in the Appalachian Basin. The composition of the injected gas into a storage reservoir can the storage volumes, pressures, the withdrawal rate, and …

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Techno-Economic Studies Of Coal-Biomass To Liquids (Cbtl) Plants With Co2 Capture And Storage (Ccs), Yuan Jiang Jan 2017

Techno-Economic Studies Of Coal-Biomass To Liquids (Cbtl) Plants With Co2 Capture And Storage (Ccs), Yuan Jiang

Graduate Theses, Dissertations, and Problem Reports (ETD)

Due to insecurity in the crude oil supply and global warming, various alternative technologies for fuel production are being investigated. In this project, indirect, direct, and hybrid liquefaction routes are investigated for production of transportation fuels from coal and biomass. Indirect coal liquefaction (ICL) and direct coal liquefaction (DCL) technologies are commercially available, but both processes are plagued with high carbon footprint. Furthermore, significant amount of hydrogen is required in the DCL process leading not only to higher cost but resulting in considerable amount of CO2 production. Addition of biomass and application of carbon capture and storage (CCS) technologies are …

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Secondary Voltage Control Using Singular Value Decomposition By Discovering Community Structures In Power Networks, Talha Iqbal Jan 2017

Secondary Voltage Control Using Singular Value Decomposition By Discovering Community Structures In Power Networks, Talha Iqbal

Graduate Theses, Dissertations, and Problem Reports (ETD)

Voltage and Frequency control are the two fundamental control problems in power systems. Unlike frequency control, voltage control is complicated by the fact that reactive power can't travel far distances from its source of generation. Due to this distributed nature of reactive power, voltage control is usually performed in decentralized manner. Typically, voltage control problem is divided into a three-level hierarchical structure namely primary, secondary and tertiary voltage control.;The aim of this thesis is to present an optimal secondary voltage control by decomposing a large power system into small subsystems called voltage control areas (VCAs) using the fast community detection …

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Development Of A Spherical Micro-Indentation Test Methodology For Creep Analysis And On-Set Of Tertiary Creep For Solder Alloys, Dumbi Azubuike Otunyo Jan 2017

Development Of A Spherical Micro-Indentation Test Methodology For Creep Analysis And On-Set Of Tertiary Creep For Solder Alloys, Dumbi Azubuike Otunyo

Graduate Theses, Dissertations, and Problem Reports (ETD)

The continuous miniaturization of electronic devices and systems demands more understanding of the creep deformation and stress relaxation of solder alloys in order to improve the structural integrity of electronic devices and systems. Creep is characterized by a slow, time-dependent deformation of the material under constant stress or force. These solder alloys are often subjected to time-dependent deformation during service conditions, hence strain-time relationships obtained from creep experiments are used to analyze the deformation mechanism of mechanical structures and electronic interconnects under stress controlled conditions. Recently, instrumented indentation methods were proposed to study creep deformation mechanism as well as determining …

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