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Articles 6061 - 6090 of 103643
Full-Text Articles in Entire DC Network
The Perceived Role Competencies And Qualifications Of Newly Hired Novice And Experienced Nurse Educators In Prelicensure Registered Nurse Programs: A Regional Study, Denice H. Kirchoff
The Perceived Role Competencies And Qualifications Of Newly Hired Novice And Experienced Nurse Educators In Prelicensure Registered Nurse Programs: A Regional Study, Denice H. Kirchoff
Graduate Theses, Dissertations, and Problem Reports (ETD)
The health care profession is faced with a well publicized shortage of registered nurses. This shortage is accompanied by a declining number of nurse educators who are needed to prepare individuals entering the field. Factors recognized to be related to the educator shortage are the heavy workload and academic demands that immediately confront the new educator. Faculty members have reported feeling overwhelmed and uncertain of their decision to enter academia. Moreover, nurse educators enter into the profession with varying educational backgrounds which pose challenges to their respective nursing program to develop their entry level needs.;The purpose of the study was …
A Novel Global Pattern Recognition Algorithm, Joseph M. Stoffa
A Novel Global Pattern Recognition Algorithm, Joseph M. Stoffa
Graduate Theses, Dissertations, and Problem Reports (ETD)
The background, development, performance assessment, and analysis of a novel pattern recognition algorithm that is applicable to any set of binary images are discussed. The efficacy of the algorithm when applied to the problem of fingerprint recognition is quantified. The conclusion was that the algorithm is relatively poor as a fingerprint identification algorithm, averaging an equal error rate of approximately 19% as calculated by the rules specified in the Year 2000 Fingerprint Verification Competition. The positive attributes of the algorithm were its ultra-fast matching times, orientation independence, lack of rejection events, relative insensitivity to resolution difference, and one-way transformations. The …
The Effect Of Omega-3 Polyunsaturated Fatty Acids Derived From Various Sources On Bone Metabolism In Growing Female Rats, Robin E. Lukas
The Effect Of Omega-3 Polyunsaturated Fatty Acids Derived From Various Sources On Bone Metabolism In Growing Female Rats, Robin E. Lukas
Graduate Theses, Dissertations, and Problem Reports (ETD)
Bone loss may be lessened if bone mass and strength are increased by optimizing nutrition intervention. Omega-3 polyunsaturated fatty acids (o-3 PUFAs) have been suggested to improve bone mineralization and microarchitecture by affecting mineral balance and lipid peroxidation. However, the sources of the o-3 PUFA differ in the types of o-3 PUFA, ratios, and structural form. Therefore, the study objective was to determine the effect of o-3 PUFAs from different sources on bone mineral and microarchitecture and explore potential associations. Growing (28 day) female Sprague-Dawley rats were randomly assigned (n=10/group) to a high fat 12% (weight) diet consisting of either …
Nanofabrication Of Optofluidic Photonic Crystal Resonators For Biosensing, Henry Bolivar Andagana Junta
Nanofabrication Of Optofluidic Photonic Crystal Resonators For Biosensing, Henry Bolivar Andagana Junta
Graduate Theses, Dissertations, and Problem Reports (ETD)
Advances in nanofabrication have made possible the development of novel nanophotonics based on Photonic Crystal (PhC) structures. Different types of biosensors have been proposed to take advantage of the unique optical properties of PhCs, which, when combined with microfluidics, provide an enabling approach for biomolecule analysis. In this thesis, nanofabrication of a new biosensor structure integrating a 2D PhC nanocavity resonator with an optofluidic channel is described. The recipes for e-beam lithography of PhC and PhC nanocavity patterns were optimized by carefully tuning the e-beam dose as well as control of the resist baking and development conditions. Two PhC fabrication …
Perceptions Of West Virginia Beef Cattle Producers On Preparedness For An Agroterrorism Attack, Rebecca Laura Ours
Perceptions Of West Virginia Beef Cattle Producers On Preparedness For An Agroterrorism Attack, Rebecca Laura Ours
Graduate Theses, Dissertations, and Problem Reports (ETD)
Biosecurity is a measure that can help protect beef producers from financial loss associated with an agroterrorism attack. This study sought to determine West Virginia beef producers' perceptions of the potential for agroterrorism and what biosecurity measures they practice. A mailed questionnaire was sent to a sample population of 355 beef producers, with a response rate of 47.7%. Beef producers in West Virginia agreed that agroterrorism could happen in the United States and in West Virginia; however, the majority did not feel it would happen on their farms. A majority of the respondents indicated they would attend a program on …
Evaluation Of Reforestation Efforts On Two Reclaimed Surface Mines In West Virginia, Curtis A. Delong
Evaluation Of Reforestation Efforts On Two Reclaimed Surface Mines In West Virginia, Curtis A. Delong
Graduate Theses, Dissertations, and Problem Reports (ETD)
Coal mining has disturbed approximately 2.4 million hectares (6 million acres) since 1930 in the United States. West Virginia is located in the Eastern Coal Region where surface mining has disturbed large areas of eastern deciduous forest. As coal operators and land owners are moving toward restoring forests on mined lands, techniques are being developed and tested to increase tree survival and growth to ensure disturbed land is converted back to forest in a timely fashion. This study was implemented to provide additional scientific data on the implementation of these techniques especially related to substrate selection. The objectives of this …
Emotional Intelligence And Facial Affect Recognition Among College Psychopaths Versus Controls, Rebecca L. Schwartz
Emotional Intelligence And Facial Affect Recognition Among College Psychopaths Versus Controls, Rebecca L. Schwartz
Graduate Theses, Dissertations, and Problem Reports (ETD)
This study had two purposes: to replicate research on facial affect recognition and to test for differences in emotional intelligence abilities between a college psychopathic and controls population. Two groups were formed based on Psychopathy Personality Inventory-Revised scores with the college psychopathic group scoring above the 75% cut off, and the controls below the 50% cut off. Forty-two college students completed questionnaires including a demographic questionnaire, the Psychopathy Personality Inventory-Revised, the Bar-On EQ-i, and the Illegal Behavior Checklist. They also completed a facial affect recognition task. There were no significant differences between the psychopathic group and the control group on …
Dissociating The Reinforcing And Discriminative Roles Of A Warning Signal In A Free-Operant Avoidance Situation, Bobby E. Phillips
Dissociating The Reinforcing And Discriminative Roles Of A Warning Signal In A Free-Operant Avoidance Situation, Bobby E. Phillips
Graduate Theses, Dissertations, and Problem Reports (ETD)
The two-factor theory of avoidance behavior predicts that a warning signal that precedes shock will have an aversive function, and if this is true then presenting a warning signal contingent upon a response should punish that response. In the present study, rats responded in a two-component multiple schedule of free-operant shock avoidance. Both components used a response-shock (RS) interval of 30 s, and a shock-shock (SS) interval of 5 s. A distinct warning signal was presented in each component, and signals differed primarily in terms of their respective durations. In one component, the signal appeared 29 s before RS shocks, …
Prediction For Resolution Time Of Software Defect, Da Wang
Prediction For Resolution Time Of Software Defect, Da Wang
Graduate Theses, Dissertations, and Problem Reports (ETD)
In practical software development projects, solving test issues efficiently during Software Development Life Cycle is critical to release software products on time. Different test environments, test resources and test requirements could result in different outcomes. Therefore, getting accurate prediction of the software defects' resolution time could be beneficial to the practical projects.;In our study, data mining techniques offer great promise in prediction of software defects' resolution time. Our research is conducted based on the NASA Metrics Data Program (MDP). We first calculate the resolution time for available projects. Using unsupervised discretization methods, we split resolution time into certain interval as …
An Exploration Of The Spatial Distribution Of National Park Units, Daniel Servian
An Exploration Of The Spatial Distribution Of National Park Units, Daniel Servian
Graduate Theses, Dissertations, and Problem Reports (ETD)
National Parks can reveal a glimpse into significant aspects of a culture. Visiting and experiencing a National Park can open a window into a culture's heritage, intellectual philosophy, triumphs, and sorrows. As of 2009, the National Park Service administered 393 National Park units, located across America and its territories. The purpose of this paper is to spatially investigate the National Park designation process. Examination of the trends and patterns within the National Park designation process required computation of the data via exploratory data analysis (EDA) and exploratory spatial data analysis (ESDA). This analysis will illustrate significant clusters and correlation between …
Hydrologic Soil Grouping Determination For Appalachian Minesoils, Anthony Willard
Hydrologic Soil Grouping Determination For Appalachian Minesoils, Anthony Willard
Graduate Theses, Dissertations, and Problem Reports (ETD)
The hydrologic soil group refers to the infiltration potential of the soil after prolonged wetting. This classification system separates soils into four hydrologic groups (A, B, C, and D), based upon the intake and transmission of water under conditions of maximum yearly wetness. Group A has the lowest runoff potential and D the highest. Several soil properties are used to determine the hydrologic soil groupings. In the study of the hydrologic soil nature, soil properties that affect infiltration, such as bulk density, porosity and texture, should be considered. Associated factors that affect infiltration in the field are slope and vegetation. …
Subsurface Stratigraphy And Petrophysical Analysis Of The Middle Devonian Interval, Including The Marcellus Shale, Of The Central Appalachian Basin; Northwestern Pennsylvania, Anne Yanni
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the central Appalachian basin, the multiple organic-rich intervals of the Middle Devonian, including the Marcellus Shale, are an emerging large resource play with high economic potential (estimated 1,307 trillion cubic feet of recoverable gas). This resource play was evaluated by examining the patterns of organic-richness, lithology, stratigraphic distribution, and other depositional characteristics. Using logs from wells throughout northwestern Pennsylvania (940 wells) integrated with core data, the subsurface lithostratigraphic boundaries were defined and correlated for the Marcellus and associated units throughout the study area.;Past studies of the Middle Devonian interval have not rigorously defined the lithostratigraphic boundaries in the subsurface …
Development And Evolution Of Higher Brain Centers In Insects, Xiangyi Zhao
Development And Evolution Of Higher Brain Centers In Insects, Xiangyi Zhao
Graduate Theses, Dissertations, and Problem Reports (ETD)
Brain structures within an individual can change during development through modification of individual neuron morphology together with alteration of neuron numbers. Differences in the same or analogous brain structures from different species can reflect behavioral pattern variation among these species fixed by natural selection. This study used insects from two different taxonomic groups to address such brain structure changes at these two time scales: developmental and evolutionary. Mushroom bodies, as an integrative sensory center involved in learning and memory in insects, were the main structure surveyed to illustrate changes in higher brain centers in both projects. In the developmental study, …
Mechanisms Of Tungsten Carbide-Cobalt Nanoparticle-Induced Angiogenesis, Yingxue Zhu
Mechanisms Of Tungsten Carbide-Cobalt Nanoparticle-Induced Angiogenesis, Yingxue Zhu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Hard metal or cemented carbide consists of a powder mixture of 80 to 90% of tungsten carbide (WC) and 5 to 10% of metallic cobalt (Co). Nanoparticles are engineered structures with one dimension of at least 100 nanometers or smaller. The small size results in properties that may be substantially different from particles of the same composition in the micrometer scale. It has been demonstrated that the inhalation of hard metal particles may cause an interstitial pulmonary disease and lung cancer, the mechanism of which involves an interaction between Co and WC particles, the generation of reactive oxygen species, and …
Three Essays On Caps Market And Unspanned Volatility, Harumi Hattori
Three Essays On Caps Market And Unspanned Volatility, Harumi Hattori
Graduate Theses, Dissertations, and Problem Reports (ETD)
In this thesis we study the caps market. Caps are a contract where the interest rates are capped at some fixed value r¯. Caps consist of caplets which are European options on the forward rates called LIBOR (the London Inter-Bank Offer Rates). Caps are the derivatives of LIBOR. However, their relation is not so simple as the relation between a stock and its derivatives. One important difference is that the volatility in one market does not affect the volatility of the other market as much as in the stock and its derivative markets. This phenomenon is termed unspanned stochastic volatility …
Three Essays On The Foreign Exchange And Equity Returns, Alina F. Klein
Three Essays On The Foreign Exchange And Equity Returns, Alina F. Klein
Graduate Theses, Dissertations, and Problem Reports (ETD)
This dissertation contains three essays dealing with current issues in the foreign exchange and equity exchange markets. The first essay observes that both markets display behaviors akin to momentum and mean reversion. This essay implements a trading strategy combining mean reversion and momentum in foreign exchange markets. The strategy was originally designed for equity markets, but it also generates abnormal returns when applied to uncovered interest parity deviations for five countries. I find that the pattern for the positions thus created in the foreign exchange markets is qualitatively similar to that found in the equity markets. Quantitatively, this strategy performs …
Social Worlds Of Rock Climbers At Seneca Rocks, West Virginia, Katherine A. Thompson
Social Worlds Of Rock Climbers At Seneca Rocks, West Virginia, Katherine A. Thompson
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to provide management at Spruce Knob-Seneca Rocks National Recreation Area, West Virginia, with an understanding of the social worlds of rock climbers at Seneca Rocks, to ascertain any management interventions that can improve access to climbing areas at Seneca Rocks, and to determine how permitted group sizes among guided and/or unguided climbers would affect the social worlds of climbers at Seneca Rocks. Between the fall of 2009 and spring of 2010 17 interviews with rock climbers of varying experience climbing at Seneca Rocks were conducted, then analyzed along with accident reports, internet forum discussions, …
Mandatory Reporting In The Context Of Home Visitation Programs, Danielle Marie Davidov
Mandatory Reporting In The Context Of Home Visitation Programs, Danielle Marie Davidov
Graduate Theses, Dissertations, and Problem Reports (ETD)
Each year in the United States, 4.8 million physical assaults and rapes are committed against 1.5 million women by an intimate partner. An estimated 3.3 to 10 million children are exposed to some form of intimate partner violence (IPV) in their own homes annually. Although mandatory reporting laws regarding child abuse and/or neglect are implemented in all 50 U.S. states, the extent to which these laws are appropriate for IPV between adults and children exposed to IPV is undetermined. A comprehensive examination of the perspectives of those required to report abuse is critical, as their roles as mandated reporters often …
Pulsar Populations In The Galaxy And Magellanic Clouds, Joshua P. Ridley
Pulsar Populations In The Galaxy And Magellanic Clouds, Joshua P. Ridley
Graduate Theses, Dissertations, and Problem Reports (ETD)
Pulsars are great tools for studying the Universe. From energetics to radio emission, many of the properties of pulsars can be used to understand other physical phenomena occurring throughout the Universe today. This dissertation examines pulsars and their properties through the use of computer simulations, describes the basic pulsar search procedure, and presents the results of a search for millisecond pulsars (MSPs) and fast radio transients in the Small Magellanic Cloud (SMC).;Using Monte Carlo simulations, a working model of normal pulsars that accurately represents the observed population was created. These simulations allow for changes to be made to the initial …
High Rank Tensor And Spherical Harmonic Models For Diffusion Mri Processing, Inas A. Yassine
High Rank Tensor And Spherical Harmonic Models For Diffusion Mri Processing, Inas A. Yassine
Graduate Theses, Dissertations, and Problem Reports (ETD)
Diffusion tensor imaging (DTI) is a non-invasive quantitative method of characterizing tissue micro-structure. Diffusion imaging attempts to characterize the manner by which the water molecules within a particular location move within a given amount of time. Measurement of the diffusion tensor (D) within a voxel allows a macroscopic voxel-averaged description of fiber structure, orientation and fully quantitative evaluation of the microstructural features of healthy and diseased tissue.;The rank two tensor model is incapable of resolving multiple fiber orientations within an individual voxel. This shortcoming of single tensor model stems from the fact that the tensor possesses only a single orientational …
Sub-Surface Stratigraphy And Petrophysical Analysis Of The Middle Devonian Interval Of The Central Appalachian Basin; West Virginia And Southwest Pennsylvania, Matthew Louis Boyce
Sub-Surface Stratigraphy And Petrophysical Analysis Of The Middle Devonian Interval Of The Central Appalachian Basin; West Virginia And Southwest Pennsylvania, Matthew Louis Boyce
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the central Appalachian basin, the Middle Devonian organic-rich shale interval, including the Marcellus Shale, is an important target for natural gas exploration. It has emerged as a giant unconventional resource play due to aerial extent and potential for individual wells to produce large volumes of gas. The Marcellus Shale is well studied on the surface without the incorporation of the subsurface stratigraphy. However, to fully understand the Marcellus economic potential it is important to investigate and map the related Middle Devonian sub-surface stratigraphic units. The interval studied includes the Onondaga Limestone (Eifelian), Marcellus Shale (Eifelian), Purcell Limestone (Eifelian), Mahantango …
Correlating Simulated Surface Marks With Near-Surface Tornado Structure, Michael I. Zimmerman
Correlating Simulated Surface Marks With Near-Surface Tornado Structure, Michael I. Zimmerman
Graduate Theses, Dissertations, and Problem Reports (ETD)
Tornadoes often leave behind patterns of debris deposition, or "surface marks", which provide a direct signature of their near surface winds. The intent of this thesis is to investigate what can be learned about near-surface tornado structure and intensity through the properties of surface marks generated by simulated, debris-laden tornadoes. Earlier work showed through numerical simulations that the tornado's structure and intensity is highly sensitive to properties of the near-surface flow and can change rapidly in time for some conditions. The strongest winds often occur within tens of meters of the surface where the threat to human life and property …
Pathophysiology And Clinical Implications Of Lower Respiratory Tract Infection (Lrti) With Respiratory Enteric Orphan Virus (Reovirus): Background And Experimental Evidence, Maret E. Bernard
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background. Respiratory viral infection early in life is a predominant factor in the inception of episodic wheezing and development of asthma amongst young children [1] and a serious health challenge. Previous studies of lower respiratory tract infections (LRTI) with respiratory syncytial virus (RSV) in animal models have indicated that early life viral exposure results in dysregulated neuroimmune interactions and altered synthesis/release of pro-inflammatory neuropeptides generating increased airway reactivity and neurogenic-inflammation. Similar to RSV, respiratory enteric orphan virus (Reovirus) is a common respiratory pathogen associated with pulmonary infections in children. Also, reovirus pulmonary infection has been shown to induce increased collagen …
Teacher And Administrator Perceptions Of Technology Use In Two West Virginia Middle Schools, Carrie E. Marcum
Teacher And Administrator Perceptions Of Technology Use In Two West Virginia Middle Schools, Carrie E. Marcum
Graduate Theses, Dissertations, and Problem Reports (ETD)
The "digital natives" that are sitting in today's classrooms live their lives surrounded by technology. "The current crop of learners differs in significant ways from previous generations because, unlike their predecessors, they have literally grown up 'digital'" (Simpson & Clem, 2008, p. 2). Teachers and administrators often struggle to keep up with the technological world that students are used to. This mixed-methods study included West Virginia teachers and administrators from two middle schools. Teachers and administrators at the two schools were given surveys that addressed the following: frequency of technology use for personal and professional use, confidence level with various …
Process Model And Control System For The Glass Fiber Drawing Process, Songke Liu
Process Model And Control System For The Glass Fiber Drawing Process, Songke Liu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Drawing of glass fibers is an important industrial process used for manufacture of a variety of materials ranging from optical communications cables to fiber filter media. A variety of machines exist for performing the drawing function, but all share similar problems with control of the fiber diameters and breakage of the fibers during the extrusion process. In many cases, control systems are not configured to monitor the most critical process variables-- temperature of molten glass in the furnace, but instead use only furnace crown temperature. Upsets in disturbance variables such as ambient temperature are compensated manually by operators, usually only …
An Evaluation Of The Efficacy And Safety Of A Protocol To Premedicate Neonates For Elective Or Semi-Urgent Intubations In A Newborn Intensive Care Unit, Judith Dunmire Polak
An Evaluation Of The Efficacy And Safety Of A Protocol To Premedicate Neonates For Elective Or Semi-Urgent Intubations In A Newborn Intensive Care Unit, Judith Dunmire Polak
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background. Intubation is a painful and stressful procedure frequently performed in the NICU, yet less than 1% of US preterm infants receive premedication. The purpose of this study is to evaluate the efficacy of an intubation protocol in the NICU to add one 2mcg/kg dose of fentanyl prior to the procedure.;Objectives. The primary outcome was to decrease the time to successful intubation. Secondary outcomes were to increase staff knowledge regarding procedural pain, to reduce the number of attempts and to decrease adverse physiologic events.;Design. Staff attended one educational session. Pre- and post-tests assessed knowledge, beliefs, and attitudes. Data pre- and …
Computational Fluid Dynamic Studies Of Chemical Looping Combustion Systems, Kartikeya Krishnaji Mahalatkar
Computational Fluid Dynamic Studies Of Chemical Looping Combustion Systems, Kartikeya Krishnaji Mahalatkar
Graduate Theses, Dissertations, and Problem Reports (ETD)
Responsible carbon management will be required for the future utilization of fossil fuels for power generation. One technology that is showing tremendous potential for carbon capture is the chemical looping combustion (CLC). CLC involves combustion of fuels by heterogeneous chemical reactions with an oxygen carrier, usually a granular metal oxide, exchanged between two fluidized beds. In any regular combustion process the oxidizer for the fuel is air which essentially is a mixture of oxygen and nitrogen. This results in a flue gas stream which consists of primarily of relatively dilute CO 2 (15 -- 20%), mixed with steam and nitrogen. …
Short Historical Overview And Comparison Of The Pitch Width And Speed Rates Of The Vibrato Used In Sonatas And Partitas For Solo Violin By Johann Sebastian Bach As Found In Recordings Of Famous Violinists Of The Twentieth And The Twenty-First Centuries, Tomislav Dimov
Graduate Theses, Dissertations, and Problem Reports (ETD)
This doctoral research project explores the use of violin vibrato present in recordings of the Six Sonatas and Partitas for Solo Violin, BWV 1001-1006 by Johann Sebastian Bach, made by forty prominent violinists during the last 100 years. It reports strictly on two of the most objectively measurable and characteristic parameters of the vibrato---its width and rate.;Forming an essential part of the violinist's central repertory for more than a century, Bach's cycle has received the highest levels of scholarly and artistic attention and the matter of vibrato has certainly been examined. However, to date there has been no systematic study …
Dynamic Src Tyrosine Kinase Signaling Directs Invadopodia Formation And Function In Head And Neck Cancer: Novel Insights Into The Original Oncogene, Laura Catherine Kelley
Dynamic Src Tyrosine Kinase Signaling Directs Invadopodia Formation And Function In Head And Neck Cancer: Novel Insights Into The Original Oncogene, Laura Catherine Kelley
Graduate Theses, Dissertations, and Problem Reports (ETD)
Cancer cell invasion and motility is mediated through actin-rich protrusions that facilitate migration through extracellular matrix and degradation of tissue barriers. Src tyrosine kinase is an essential catalyst of motile actin networks and is a potent mediator of the metastatic program. The Src substrate cortactin is a critical scaffold that links kinase signaling to cytoskeletal dynamics. Both Src and cortactin are overexpressed in several human cancers and their expression is associated with poor prognosis. These proteins are not associated with the initiation of tumorigenesis, but are thought to play a vital role in the metastatic process. The overall aim of …
The Power-Knowledge To Move Mountains: Subaltern Discourses Of Mountaintop Removal In Coal River Valley, West Virginia, Jen Osha
Graduate Theses, Dissertations, and Problem Reports (ETD)
This research investigates the perspectives of local residents within the Coal River Valley, WV, who are concerned about the impacts of mountaintop removal (MTR) on themselves, their families and communities, and their environment. In this dissertation, the term 'subaltern' represents a heterogeneous community of resistance to MTR with multiple perspectives around intersections of gender, age, and livelihood. The objectives of my study are twofold: to illuminate how dominant legal discourse continues to subjugate the discourse of resistance to MTR, and to identify possible spaces of resistance within which the subaltern discourse can challenge the power relations that continue to permit …