Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (783)
- Social and Behavioral Sciences (648)
- Life Sciences (513)
- Physical Sciences and Mathematics (501)
- Medicine and Health Sciences (458)
-
- Arts and Humanities (334)
- Psychology (253)
- Education (211)
- Mechanical Engineering (161)
- Civil and Environmental Engineering (142)
- Chemistry (128)
- Music (115)
- Chemical Engineering (113)
- Electrical and Computer Engineering (110)
- Business (94)
- Environmental Sciences (92)
- Earth Sciences (90)
- Civil Engineering (84)
- Materials Science and Engineering (83)
- Public Health (81)
- Music Performance (80)
- Communication (79)
- Computer Sciences (79)
- Nursing (79)
- Computer Engineering (77)
- Animal Sciences (75)
- History (75)
- Operations Research, Systems Engineering and Industrial Engineering (75)
- Neuroscience and Neurobiology (73)
- Ecology and Evolutionary Biology (67)
- Keyword
-
- Mechanical engineering (476)
- Electrical engineering (282)
- Civil engineering (254)
- Computer science (249)
- Forestry (156)
-
- Chemical engineering (152)
- Clinical psychology (152)
- Ecology (130)
- Behavioral psychology (116)
- Petroleum engineering (113)
- Aerospace engineering (112)
- Industrial engineering (112)
- Higher education (108)
- Economics (103)
- Environmental engineering (99)
- Geology (99)
- Animal sciences (97)
- Materials science (95)
- Molecular biology (94)
- Public health (90)
- Aquatic sciences (88)
- Mining engineering (88)
- Educational technology (86)
- Energy (84)
- Environmental science (84)
- Developmental psychology (83)
- Educational psychology (82)
- Dentistry (78)
- Machine Learning (75)
- Social psychology (71)
- Publication Year
- File Type
Articles 4861 - 4890 of 11969
Full-Text Articles in Entire DC Network
Plantwide Control System Design For Igcc Power Plants With Co2 Capture, Dustin Douglas Jones
Plantwide Control System Design For Igcc Power Plants With Co2 Capture, Dustin Douglas Jones
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this paper, a systematic approach to design the control system of a commercial-scale integrated gasification combined cycle (IGCC) power plant with CO2 capture is considered. The control system design is developed with the objective of optimizing a desired scalar function while satisfying operational and environmental constraints in the presence of measured and unmeasured disturbances. Various objective functions can be considered for the control system design such as maximization of profit, maximization of the power produced, or minimization of the auxiliary power consumed in the plant. The design of such a control system can make the IGCC plant suitable to …
Nerve Growth Factor Regulates Na+ Transport In Human Airway Epithelial Cells, Michael J. Shimko
Nerve Growth Factor Regulates Na+ Transport In Human Airway Epithelial Cells, Michael J. Shimko
Graduate Theses, Dissertations, and Problem Reports (ETD)
Nerve growth factor (NGF) was discovered for its ability to enhance nerve growth, but recent evidence suggests there is a correlation between elevated NGF levels in the lung and airway diseases, including lung inflammatory diseases and respiratory virus infections. NGF can be produced and act upon both structural and non-structural cells of the airways, and overexpression of NGF causes morphological and physiological changes in the airways, such as an increased innervation resulting in a neuronal remodeling of the lung, airway smooth muscle thickening, increased vascularization, airway hyperreactivity to capsaicin, and subepithelial thickening. Although work has been conducted to investigate NGFs …
Ion Temperatures In Earth's Inner Magnetosphere: Ring Current Dynamics, Transient Effects, And Data-Model Comparisons, Justin G. Elfritz
Ion Temperatures In Earth's Inner Magnetosphere: Ring Current Dynamics, Transient Effects, And Data-Model Comparisons, Justin G. Elfritz
Graduate Theses, Dissertations, and Problem Reports (ETD)
Earth's magnetosphere is an inherently complex, strongly nonlinear system with intrinsic coupling between internal and external drivers. In general, magnetospheric systems can be understood as a balance between multiple regions which all exhibit unique plasma properties. The feedback processes between each region depend on geomagnetic activity levels and the preceding states of the solar wind and the respective magnetospheric regions. Of particular interest is understanding how ion temperatures evolve during geomagnetically active periods, and also understanding the space weather impacts of hot ion populations injected during such periods. Dynamic, spatiotemporally resolved ion temperature boundary conditions have been implemented into the …
Lower Extremity Alignment And Back And Lower Extremity Pain During Pregnancy, Kathryn Harrison
Lower Extremity Alignment And Back And Lower Extremity Pain During Pregnancy, Kathryn Harrison
Graduate Theses, Dissertations, and Problem Reports (ETD)
Over 50% of women experience musculoskeletal pain in the low back or lower extremity during pregnancy. Further, 31% of these women experience continued pain after giving birth. Many women also report changes in foot length and arch height during pregnancy. The purpose of this study was to determine if changes in foot anthropometry during pregnancy are related to low back and lower extremity pain. A secondary aim was to determine if added weight alone explains changes in lower extremity alignment, or if other factors mediate these changes. Methods: Fifteen primigravid women were recruited to participate, along with thirteen weight-matched nulliparous …
Aircraft Abnormal Conditions Detection, Identification, And Evaluation Using Innate And Adaptive Immune Systems Interaction, Dia Al Azzawi
Aircraft Abnormal Conditions Detection, Identification, And Evaluation Using Innate And Adaptive Immune Systems Interaction, Dia Al Azzawi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Abnormal flight conditions play a major role in aircraft accidents frequently causing loss of control. To ensure aircraft operation safety in all situations, intelligent system monitoring and adaptation must rely on accurately detecting the presence of abnormal conditions as soon as they take place, identifying their root cause(s), estimating their nature and severity, and predicting their impact on the flight envelope.;Due to the complexity and multidimensionality of the aircraft system under abnormal conditions, these requirements are extremely difficult to satisfy using existing analytical and/or statistical approaches. Moreover, current methodologies have addressed only isolated classes of abnormal conditions and a reduced …
A Preliminary Study Evaluating Potential Probiotic Use In Endodontics, Khaled Seifelnasr
A Preliminary Study Evaluating Potential Probiotic Use In Endodontics, Khaled Seifelnasr
Graduate Theses, Dissertations, and Problem Reports (ETD)
Introduction: The main goal of endodontics is the prevention of apical periodontitis. This condition is the result of persistent pathogenic microorganisms such as Enterococcus faecalis (E. f) and Candida albicans (C. a) remaining in the root canal systems of teeth, and the ability of those organisms to directly cause acute and chronic inflammation in the periapical tissues. The concept of the use of probiotics has not yet been evaluated in addressing endodontic disease, but probiotics have proven successful in treating periodontal disease. Taking these findings into account, this preliminary work was performed to evaluate the possible effectiveness of a probiotic …
Economic And Monetary Union: An Unexplored Case Of Federalism, Alessandro Cagossi
Economic And Monetary Union: An Unexplored Case Of Federalism, Alessandro Cagossi
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation is intended to shows how federalism can be a useful theoretical tool to conceptualize the overall evolution of Economic and Monetary Union (EMU) from its inception to the current attempts (as of April 2014) to tackle the financial crisis that has affected the Eurozone since 2010. The topic is important because no detailed studies are yet available using a federalist focus on EMU. This research, therefore, is aimed to fill a gap in the literature currently approaching economic and monetary integration.;The dissertation draws on the assumptions found in the current mainstream literature on European integration. In this regard, …
C8-Arylguanine Modified Hairpin Oligonucleotides: Synthesis, Conformational Analysis, And Tools For The Investigation Of Z-Dna Formation, Brian C. Train
C8-Arylguanine Modified Hairpin Oligonucleotides: Synthesis, Conformational Analysis, And Tools For The Investigation Of Z-Dna Formation, Brian C. Train
Graduate Theses, Dissertations, and Problem Reports (ETD)
Z-DNA is the only DNA conformation that has a left-handed helical twist. Z-DNA has been implicated in carcinogenesis from its role in gene expression. Z-DNA formation has been linked to mutagenesis since it may play a role in genetic instability and can induce gene deletions. However, the specific biological role for Z-DNA in vivo remains uncertain. Arylhydrazines are carcinogenic compounds that are known to form DNA adducts, although it is unknown how DNA adduct formation is related to their carcinogenicity. Previous work in our lab has demonstrated that the formation of C8-arylguanine DNA adducts, derived from arylhydrazines, shifts the B …
Diet Induced Alteration Of The Murine Intestinal Microbiome After Antibiotic Ablation, Adam Irvin
Diet Induced Alteration Of The Murine Intestinal Microbiome After Antibiotic Ablation, Adam Irvin
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background and Objective: We detected a dominant non-cultivatable gram-positive coccobacillus associated with cultivatable yeast in feces of mice treated with a cocktail of broad-spectrum antibiotics while being fed a partially defined mouse chow that is commonly used for nutritional studies. The goal of this study was to determine the identity of the non-cultivatable gram-positive coccobacillus.;Methods: Fecal samples were analyzed by Gram stain, quantitative flow cytometry, next generation sequencing of the V3 or V4 regions of the 16S rRNA gene, fluorescence microscopy, and sequence analysis of the tuf gene, which can distinguish among Streptococcus and Staphylococcus genera.;Results: Fecal samples from antibiotic-treated …
Ion Current Rectification In Nano/Micro-Fluidic Interfaces And Pulsed Glow Discharge Time-Of-Flight Mass Spectrometric Chemical Speciation, Han Wang
Graduate Theses, Dissertations, and Problem Reports (ETD)
Microfluidics continues to be of interest for analyzing chemical and biological samples because of the disposability, portability, low sample consumption, fast analysis time, and parallel analysis potential for multiple samples in a single device. To improve microfluidic device functionality, integrated systems-nanofluidic/microfluidic interfaces (NMIs) have been fabricated for concentrating samples and performing as molecular gates. Ion current rectification has been confirmed in NMI with an asymmetric system. In chapter 2, the asymmetry of the NMI is systematically altered by varying the inner diameter of the nanocapillary membrane (NCM) reservoir, and the current rectification factor is observed to increase as the inner …
Preservice Physical Educators' Stress And Instructional Effectiveness, Jingyang Huang
Preservice Physical Educators' Stress And Instructional Effectiveness, Jingyang Huang
Graduate Theses, Dissertations, and Problem Reports (ETD)
The primary purpose of this study was to determine the relationship between preservice physical educators' stress and their instructional effectiveness. The study sample included 25 preservice physical educators in the Middle School Block and Secondary School Block in a Physical Education Teacher Education program located in the mid-Atlantic area of the United States. A demographic questionnaire, the Teacher Stress Scale, the West Virginia University Teaching Evaluation System, and interview questions were administered during preservice physical educators' practice teaching period. The results indicated that preservice physical educators' stress was negatively correlated with instructional effectiveness. Curriculum model and noise were reported as …
Woodland Owners Motivations For Involvement In Landscape Scale Forest Stewardship, Ana Maria Erazo
Woodland Owners Motivations For Involvement In Landscape Scale Forest Stewardship, Ana Maria Erazo
Graduate Theses, Dissertations, and Problem Reports (ETD)
West Virginia is mainly covered by forest, most of which is in the hands of private forest (PF) owners. The decisions taken about the management of these properties affect the landscape beyond their parcel boundaries. These forests provide ecological services to society, timber products and recreation. Keeping the forest healthy and productive is very important for the common good. Threats related to development parcelization, invasive species and pests are some of the challenges when trying to maintain forest coverage in WV. To be able to face these challenges it is necessary to plan at a wider scale than the individual …
Effects Of Response-Independent Food Pellet Delivery On The Development Of Tolerance To The Rate-Decreasing Effect Of D-Amphetamine In Rats, Christopher A. Krebs
Effects Of Response-Independent Food Pellet Delivery On The Development Of Tolerance To The Rate-Decreasing Effect Of D-Amphetamine In Rats, Christopher A. Krebs
Graduate Theses, Dissertations, and Problem Reports (ETD)
The extent to which initial drug administration decreases the ability of an organism to obtain reinforcement can affect the development of behavioral tolerance. Environmental enrichment affects many drug-related phenomena, but its effects on the development of tolerance are not clear. The present study examined how enriching the environment by providing non-contingent food pellets during experimental sessions affects the development of tolerance to a dose of d-amphetamine that produces a loss in reinforcement. Lever pressing for food pellets was maintained under a multiple schedule consisting of two variable-interval (VI) 60-s components. One component was enriched by providing food pellets non-contingently under …
Functional Equivalency Of Created And Natural Wetlands In The Central Appalachians: Reproductive Success, Call Phenology, And Diet Composition Of Amphibians, Gabriel F. Strain
Functional Equivalency Of Created And Natural Wetlands In The Central Appalachians: Reproductive Success, Call Phenology, And Diet Composition Of Amphibians, Gabriel F. Strain
Graduate Theses, Dissertations, and Problem Reports (ETD)
Evaluating the adequacy of created wetlands to replace the functions of lost natural wetlands is important because wetland mitigation is a major tool used to offset wetland losses. However, measurements such as vegetative cover and presence of wildlife may not provide sufficient evidence that created wetlands are functioning properly and thus examining the ecology of wetland biota such as that of amphibians may be a more useful surrogate for function. The objectives of this study were to assess the reproductive success, temporal calling patterns, and diet composition of amphibians inhabiting created wetlands relative to natural wetlands in order to facilitate …
Keystroke And Touch-Dynamics Based Authentication For Desktop And Mobile Devices, Zahid Ali Syed
Keystroke And Touch-Dynamics Based Authentication For Desktop And Mobile Devices, Zahid Ali Syed
Graduate Theses, Dissertations, and Problem Reports (ETD)
The most commonly used system on desktop computers is a simple username and password approach which assumes that only genuine users know their own credentials. Once broken, the system will accept every authentication trial using compromised credentials until the breach is detected. Mobile devices, such as smart phones and tablets, have seen an explosive increase for personal computing and internet browsing. While the primary mode of interaction in such devices is through their touch screen via gestures, the authentication procedures have been inherited from keyboard-based computers, e.g. a Personal Identification Number, or a gesture based password, etc.;This work provides contributions …
Regional Mapping And Reservoir Analysis Of The Middle Devonian Marcellus Shale In The Appalachian Basin, Jared Vanmeter
Regional Mapping And Reservoir Analysis Of The Middle Devonian Marcellus Shale In The Appalachian Basin, Jared Vanmeter
Graduate Theses, Dissertations, and Problem Reports (ETD)
The main purpose of this investigation is to define the distribution of organic-rich facies of the Middle Devonian Marcellus Shale in New York, Ohio, Pennsylvania, and West Virginia. The analysis is based on well-log data, primarily gamma-ray (the most common and best calibrated) and bulk-density logs (where available). Detailed log analysis has been performed to normalize the logs and define key indicators of reservoir quality. Stratigraphic correlations have been conducted to trace key formation across the study area.;The following maps were generated over the study area.;• Isopach maps of the Mahantango Shale, Marcellus Shale, Oatka Creek Member, Cherry Valley and …
Exploring The Use Of Social Media And Its Effect On Policy In Community Colleges, S. Dianne Davis
Exploring The Use Of Social Media And Its Effect On Policy In Community Colleges, S. Dianne Davis
Graduate Theses, Dissertations, and Problem Reports (ETD)
The use of online social media websites has grown exponentially in past years. Recent studies show faculty use of social media is also growing. This study examined how faculty are using social media websites with students and if they are aware of issues that violations of the Federal Educational Rights and Privacy Act could cause. The research questions were: How are faculty using social media for teacher-student communication; Are there privacy concerns faculty should be aware of because of the Federal Education Rights to Privacy Act; and what social media is being use by faculty to communicate with students. Participants …
Advanced Composites For Design And Rehabilitation Of Hydraulic Structures, Piyush Ram Soti
Advanced Composites For Design And Rehabilitation Of Hydraulic Structures, Piyush Ram Soti
Graduate Theses, Dissertations, and Problem Reports (ETD)
Concrete and steel have been predominantly used in civil and hydraulic infrastructure construction. With several years of service under adverse climatic conditions, those structures have exhibited moderate to severe deterioration and composite materials are emerging as one of the most feasible and economical materials for their rehabilitation. This report describes and highlights the research work conducted on: i) rehabilitation of underwater concrete structures with FRP, and ii) evaluation of abrasion resistant coatings for hydraulic steel gates.;Curing of certain class of resins under water has unfolded the possibility of utilizing fiber reinforced polymers (FRPs) to repair submerged piles and pier structures. …
Application Activities Designed To Prepare Preservice Special Education Teachers For Response And Prevention Of Bullying Behaviors, Crystal Smith
Application Activities Designed To Prepare Preservice Special Education Teachers For Response And Prevention Of Bullying Behaviors, Crystal Smith
Graduate Theses, Dissertations, and Problem Reports (ETD)
The effects of bullying on individuals involved in bullying situations (i.e., the bully, the target, and bystanders), has prompted nationwide interest in the field of education. Identifying students at-risk of being involved in bullying situations has led to awareness of high prevalence rates among students with disabilities. Understanding the potentially devastating effects of bullying on the academic, social, and emotional well-being of students with disabilities is disconcerting. Therefore, the goal of this study was to answer questions related to effectiveness of application activities designed to prepare preservice special education teachers for response and prevention of bullying behaviors. All activities related …
A Supervised Low-Rank Matrix Decomposition For Matching, Sajid Sharlemin
A Supervised Low-Rank Matrix Decomposition For Matching, Sajid Sharlemin
Graduate Theses, Dissertations, and Problem Reports (ETD)
Human identification from images captured in unconstrained scenarios is still an unsolved problem, which finds applications in several areas, ranging from all the settings typical of video surveillance, to robotics, metadata enrichment of social media content, and mobile applications. The most recent approaches rely on techniques such as sparse coding and low-rank matrix decomposition. Those build a generative representation of the data that on the one hand, attempts capturing all the information descriptive of an identity; on the other hand, training and testing are complex to allow those algorithms to be robust against grossly corrupted data, which are typical of …
Stability Of The Shoulder Complex During Manual Exertions, Kasey Cutlip
Stability Of The Shoulder Complex During Manual Exertions, Kasey Cutlip
Graduate Theses, Dissertations, and Problem Reports (ETD)
Shoulder musculoskeletal disorders (MSDs) are a major cause of morbidity and pain in the modern working population. Epidemiological literature suggests that forceful arm exertions pose an increased risk for shoulder MSD development. Although several previous studies have reported a significant stress-strain relationship for the shoulder complex during physically demanding exertions, a clear assessment method to evaluate the risk of injury to the shoulder complex currently does not exist. The objective of this study was to develop and validate a new shoulder strain index to evaluate strain placed on the shoulder during work-related forceful arm exertions. Specifically, the concept of the …
A Lumped Computational Model For Sodium Sulfur Battery Analysis, Fan Wu
A Lumped Computational Model For Sodium Sulfur Battery Analysis, Fan Wu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Due to the cost of materials and time consuming testing procedures, development of new batteries is a slow and expensive practice. The purpose of this study is to develop a computational model and assess the capabilities of such a model designed to aid in the design process and control of sodium sulfur batteries.;To this end, a transient lumped computational model derived from an integral analysis of the transport of species, energy and charge throughout the battery has been developed. The computation processes are coupled with the use of Faraday's law, and solutions for the species concentrations, electrical potential and current …
Implementation Of Self-Consolidating Concrete For Bridge Applications, Joseph Garet Sweet
Implementation Of Self-Consolidating Concrete For Bridge Applications, Joseph Garet Sweet
Graduate Theses, Dissertations, and Problem Reports (ETD)
Self-Consolidating Concrete (SCC) typically refers to a highly-flowable classification of high-performance concrete. Unlike traditional concrete, SCC has the potential ability to flow into and completely fill complex forms under its own weight. A well-designed SCC mix does not need to be vibrated for compaction, unlike a traditional vibrated concrete (TVC) mix. This gives the use of SCC the potential advantages of reduced placement costs and a more worker-friendly construction environment due to the elimination of construction noise and the added ease of placement. The primary objective of this study was to work with contractors, WVDOT officials in order to safely …
A Survey On The Microscopical And Chemical Analysis Of Synthetic Wig Fibers, Theresa A. Joslin
A Survey On The Microscopical And Chemical Analysis Of Synthetic Wig Fibers, Theresa A. Joslin
Graduate Theses, Dissertations, and Problem Reports (ETD)
The goal of this study was to determine what characteristics of synthetic wigs are polymorphs; and to report the most discriminating analytical methods for microscopical and chemical examinations of wig fibers for the detection of the most variable features. Synthetic wig fibers are manufactured to take on the appearance of natural hair for either cosmetic or costume use. Subsequently, the characteristics of wig fibers, especially as a collective group within a single wig, can vary greatly from those synthetic fibers collected from garments and household items. A number of samples were collected from 50 brown, blonde and black wigs made …
Fully Coupled Finite Element Model To Study Multiple Hydraulic Fracturing In Heterogeneous Tight Formations, Ruizhi Zhong
Fully Coupled Finite Element Model To Study Multiple Hydraulic Fracturing In Heterogeneous Tight Formations, Ruizhi Zhong
Graduate Theses, Dissertations, and Problem Reports (ETD)
Hydraulic fracturing is a widely used technique in industry to enhance oil and gas recovery. The process involves the injection of fracking fluid with high pressure into the wellbore to propagate initial fractures generated during well perforation. It is a coupled process of fluid and rock mechanics one controlling the fluid movement and other fracture propagation. There is a lack of reliable and robust simulation technique that can couple these two processes at the same time being practical for large domain size of hydraulic fracturing in the field scale. In hydraulic fracturing, multiple fractures are also created within one cluster …
Three Essays On Investigating Province-Level Carbon Dioxide Emissions In China, Xueting Zhao
Three Essays On Investigating Province-Level Carbon Dioxide Emissions In China, Xueting Zhao
Graduate Theses, Dissertations, and Problem Reports (ETD)
The three essays in this dissertation study the influential factors of energy-related carbon dioxide emission intensity, whether the province-level carbon dioxide emission intensity is convergence, and how the spatial panel data models perform in forecasting against non-spatial panel data models for province-level carbon dioxide emissions in China.;The first essay entitled "Spatial Analysis of China Province-Level CO 2 Emission Intensity" offers a unique contribution to the literature by investigating the influential factors of energy-related carbon dioxide emission intensity among a panel of 30 provinces in China covering the period 1990-2010. This study uses novel spatial panel data models to analyze the …
Why And How Organizational Members Encourage Their Peer Coworkers To Voluntarily Exit The Organization: An Investigation Of Peer-Influence Exit Tactics, Michael Sollitto
Why And How Organizational Members Encourage Their Peer Coworkers To Voluntarily Exit The Organization: An Investigation Of Peer-Influence Exit Tactics, Michael Sollitto
Graduate Theses, Dissertations, and Problem Reports (ETD)
Previous scholars have found that organizational members use various tactics to encourage their peer coworkers to voluntarily exit their organizations. These tactics are known as peer-influence exit tactics. What has been missing from the literature is clarity about the factors that influence organizational members' use of peer-influence exit tactics. This dissertation explored the construct of peer-influenced exit to develop greater clarity about the motives for encouraging peer coworkers to leave, the characteristics of the peer-influence exit tactic source and receiver, and the organizational influences on peer-influenced exit. Study 1 used an open-ended survey design to explore the motives, process, and …
A Multi-Agent Design For Power Distribution Systems Automation, M. Jawad Ghorbani
A Multi-Agent Design For Power Distribution Systems Automation, M. Jawad Ghorbani
Graduate Theses, Dissertations, and Problem Reports (ETD)
A new Multi Agent System (MAS) design for fault location, isolation and restoration in power distribution systems is presented. In proposed approach, when there is a fault in the Power Distribution System (PDS), MAS quickly isolates the fault and restores the service to fault-free zones. Hierarchical coordination strategy is introduced to manage the agents which integrate the advantages of both centralized and decentralized coordination strategies. In this framework, Zone Agent (ZA) locate and isolate the fault based on the locally available information and assist the Feeder Agent (FA) for reconfiguration and restoration. FA can solve the restoration problem using the …
The Modeling And Advanced Controller Design Of Wind, Pv And Battery Inverters, Junbiao Han
The Modeling And Advanced Controller Design Of Wind, Pv And Battery Inverters, Junbiao Han
Graduate Theses, Dissertations, and Problem Reports (ETD)
Renewable energies such as wind power and solar energy have become alternatives to fossil energy due to the improved energy security and sustainability. This trend leads to the rapid growth of wind and Photovoltaic (PV) farm installations worldwide. Power electronic equipments are commonly employed to interface the renewable energy generation with the grid. The intermittent nature of renewable and the large scale utilization of power electronic devices bring forth numerous challenges to system operation and design. Methods for studying and improving the operation of the interconnection of renewable energy such as wind and PV are proposed in this Ph.D. dissertation.;A …
Analysis Of Production Data From Horizontal Shale Wells Using Decline Curves, Atoosa Mashayekhi
Analysis Of Production Data From Horizontal Shale Wells Using Decline Curves, Atoosa Mashayekhi
Graduate Theses, Dissertations, and Problem Reports (ETD)
Recent interest in the exploitation of Marcellus shale play, using horizontal drilling and multistage hydraulic fracturing, has increased the demand for reliable estimation of recoverable reserves from ultra-low permeability shale gas formations. Due to the limited field experience, the production performances of Marcellus shale gas reservoirs as well as the key parameters that affect the long-term production of the horizontal wells have not been well-established.;Among all the prediction methods, only the Decline Curve Analysis (DCA) technique has proved successful in forecasting production data rapidly and to a high degree of accuracy. Several DCA models including conventional Arps, PLE, and Duong …