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Preference Reversals And Effects Of D-Amphetamine On Within-Session Delay Discounting In Rats, Christopher A. Krebs
Preference Reversals And Effects Of D-Amphetamine On Within-Session Delay Discounting In Rats, Christopher A. Krebs
Graduate Theses, Dissertations, and Problem Reports (ETD)
Impulsive choice is correlated with behavioral problems such as attention-deficit/hyperactivity-disorder and can be assessed using delay-discounting procedures in which subjects choose between a smaller, more immediate reinforcer (impulsive choice) and a larger, more delayed reinforcer (self-controlled choice). A within-session delay-discounting procedure in which choice was between one food pellet delivered immediately and three food pellets delivered after increasing delays was used to examine effects of adding or subtracting delays common to both reinforcers on impulsive choice in male Sprague-Dawley rats (N = 8). For all subjects, delay discounting was observed regardless of whether delays common to both reinforcers were added …
Fragipan Influence On Hydropedological Properties Of Benchmark Soilscapes In West Virginia, John F. Beck
Fragipan Influence On Hydropedological Properties Of Benchmark Soilscapes In West Virginia, John F. Beck
Graduate Theses, Dissertations, and Problem Reports (ETD)
Soil wetness and the interactions between soil and water influence the potential uses of soil and must be considered when making decisions regarding soil use and management. The strategic placement of hydrologic monitoring instrumentation on a benchmark soilscape is critical toward providing the users of soil information with reliable predictability of water movement at the soil-water interface.;A hydropedologically significant study site that satisfies the benchmark soilscape criteria as defined by the Natural Resources Conservation Service (NRCS) was selected for this research. Because of the high cost of performing investigations and research, benchmark soils are targeted and the information gleaned from …
The Association Of Markers Of Endothelial Dysfunction And Incident Diabetes Mellitus, Hypertension, Chronic Kidney Disease And Cardiovascular Mortality, Loretta Rena Cain
The Association Of Markers Of Endothelial Dysfunction And Incident Diabetes Mellitus, Hypertension, Chronic Kidney Disease And Cardiovascular Mortality, Loretta Rena Cain
Graduate Theses, Dissertations, and Problem Reports (ETD)
In recent years several mechanistic animal studies have proposed new insights, including the role of endothelial dysfunction, in the pathogenesis of common cardiometabolic disorders such as diabetes mellitus, hypertension, chronic kidney disease (CKD) and cardiovascular disease (CVD). However, few studies in humans have followed up these emerging leads from animal models. Because traditional risk factors have been shown not to completely explain all the observed risk of cardiometabolic outcomes in the general population, there is a need to examine novel mechanisms such as endothelial dysfunction in population-based studies, so as to identify new ways of preventing and/or treating these diseases. …
Gender Classification From Facial Images, Cunjian Chen
Gender Classification From Facial Images, Cunjian Chen
Graduate Theses, Dissertations, and Problem Reports (ETD)
Gender classification based on facial images has received increased attention in the computer vision community. In this work, a comprehensive evaluation of state-of-the-art gender classification methods is carried out on publicly available databases and extended to reallife face images, where face detection and face normalization are essential for the success of the system. Next, the possibility of predicting gender from face images acquired in the near-infrared spectrum (NIR) is explored. In this regard, the following two questions are addressed: (a) Can gender be predicted from NIR face images; and (b) Can a gender predictor learned using visible (VIS) images operate …
Agent Based Load Management System For A Smart Power Distribution System, Manasaveena Chennuri
Agent Based Load Management System For A Smart Power Distribution System, Manasaveena Chennuri
Graduate Theses, Dissertations, and Problem Reports (ETD)
Inherently, electric power system is exceptionally complex as far its planning, construction and operation is concerned. Adding to that, advancement in the way the electric power is consumed and ascending electrical power demand makes the traditional electric power system.s planning, monitoring and control an uphill struggle. This thesis work is focused on the improvement of power distribution system. Improvement in the control system, information system, and management system of power distribution system is transforming the grounds on which the most of the traditional power system has been operated.;The present thesis work has been motivated to be a part of an …
Clinician Detection Of Depression In Late Life, Jeffrey J. Gregg
Clinician Detection Of Depression In Late Life, Jeffrey J. Gregg
Graduate Theses, Dissertations, and Problem Reports (ETD)
Depression in late life is associated with decreased cognitive functioning, increased social and functional impairment, and overall increased mortality. Because of these negative health implications, the accurate assessment of late-life depression is a critical public health issue. Prior research has consistently demonstrated that older adults typically seek and receive mental health services from general medical settings instead of mental health specialty clinics. Unfortunately, many studies have shown that primary care physicians often fail to recognize depression. In addition, older adults are less likely than younger adults to endorse symptoms of sadness or dysphoria. Those with cognitive impairment are also less …
Effect Of Intravenous Treatment With The Oxytocin Antagonist Atosiban On Circulating Progesterone In The Ewe, Todd M. Ramboldt
Effect Of Intravenous Treatment With The Oxytocin Antagonist Atosiban On Circulating Progesterone In The Ewe, Todd M. Ramboldt
Graduate Theses, Dissertations, and Problem Reports (ETD)
Effects of oxytocin on the ovine corpus luteum have been controversial for a number of years. The present study investigated the effects of atosiban, a combined oxytocin and vasopressin 1A antagonist, administered systemically to ewes on post estrus day 8 to 10. Atosiban was given in four bolus intravenous injections at 0, 60, 120 and 180 minutes with blood sampling every 15 minutes from -60 through 480 minutes. Concentrations of serum progesterone ng/ml were measured via radioimmunoassay. A log10 transformation of progesterone values was conducted to account for the heterogeneity of variance of the values. During the treatment interval (0 …
Outcrop Lithostratigraphy And Petrophysics Of The Middle Devonian Marcellus Shale In West Virginia And Adjacent States, Margaret E. Walker-Milani
Outcrop Lithostratigraphy And Petrophysics Of The Middle Devonian Marcellus Shale In West Virginia And Adjacent States, Margaret E. Walker-Milani
Graduate Theses, Dissertations, and Problem Reports (ETD)
A stratigraphic study of 15 partial outcrops of the Marcellus Shale in West Virginia, Pennsylvania, and Maryland has identified six distinct lithofacies. These include grey calcareous shale (Facies 1), limestone (Facies 2), black calcareous shale (Facies 3), black non-calcareous shale (Facies 4), grey non-calcareous shale (Facies 5) and K-bentonite (Facies 6). Packages of these facies have been organized into six vertically stacked units (A-F). Deposition of the facies resulted from the rise and fall of relative sea level, which in turn shifted the location of the thermocline and affected the amount of terrigenous sediment distributed from the eastern source. Facies …
The Effect Of Conjugated Linoleic Acid (Cla) On Feed Efficiency And Carcass Composition In Barrows, Natasha R. Winslow
The Effect Of Conjugated Linoleic Acid (Cla) On Feed Efficiency And Carcass Composition In Barrows, Natasha R. Winslow
Graduate Theses, Dissertations, and Problem Reports (ETD)
The purpose of this study was to determine if conjugated linoleic acid (CLA) would have an effect on feeding efficiency and carcass composition of 20 finishing barrows obtained from the West Virginia University Animal Science Farm. A posttest experimental design was used to obtain data for the study. The barrows were matched for weight and placed two in a pen. The pens were randomly assigned to a diet consisting of either a 1% CLA oil or 1% soybean oil. The six week study found that weight gain, average daily feed intake, muscle lipids, loin eye area, and color were not …
Quantifying The Reliability Of Latent Fingerprint Matching Via Signal Detection Theory, Eric J. Widman
Quantifying The Reliability Of Latent Fingerprint Matching Via Signal Detection Theory, Eric J. Widman
Graduate Theses, Dissertations, and Problem Reports (ETD)
The definition of standards in fingerprint identification is currently an issue of discussion in the field. Quantitative standards have been used in the past to provide justifications for conclusions; however, a scientific basis for relying on numerical standards alone currently does not exist. The tradeoff for this combined approach is that conclusions are based on a conclusion that is left to the judgment of the examiner and may not be repeatable. To test the implementation of thresholds for conclusion, this research studied the effects of only considering concrete data in quantitative form. In this case, signal detection theory is applied …
Development Of An Artificial Neural Network To Predict In-Use Engine Emissions, Melissa L. Morris
Development Of An Artificial Neural Network To Predict In-Use Engine Emissions, Melissa L. Morris
Graduate Theses, Dissertations, and Problem Reports (ETD)
A method to predict in-use diesel engine emissions is developed based on engine dynamometer and in-use data acquired at the West Virginia University Center for Alternative Fuels, Engines, and Emissions. (WVU CAFEE). The model accounts for the effects of road grade on generated emissions; a need for this model is evident in literature. Current modeling methods do not account for the effects of road grade, and have been shown to under-predict NOx by as much as 57%. It is determined through present research and a review of relevant literature that an artificial neural network (ANN) was the most applicable modeling …
Europeanization Of The Estonian Electricity Sector: Historical Legacies And Security Concerns, Madis Ehastu
Europeanization Of The Estonian Electricity Sector: Historical Legacies And Security Concerns, Madis Ehastu
Graduate Theses, Dissertations, and Problem Reports (ETD)
Estonia, generally considered a Europhile country, is showing the first signs of opposition to supranational European Union (EU) policies. This is because the EU's energy- and climate policy's trinity of policy directions---creation of an internal market, security of supply and environmental sustainability---are problematic in regard to the the case of Estonian electricity sector. The Estonian actors' response to adaptational pressures caused by the EU, a process that is generally understood as Europeanization, thus provides us with a useful case study to determine what conditions limit the EU's attempts to influence domestic politics. Research indicates that the main reason for Estonian …
Impact Of Hydraulic Fractures On Type Curves For Horizontal Wells In Cbm Reservoirs, David Christopher Bell
Impact Of Hydraulic Fractures On Type Curves For Horizontal Wells In Cbm Reservoirs, David Christopher Bell
Graduate Theses, Dissertations, and Problem Reports (ETD)
As production technologies continue to increase, more and more unconventional natural gas plays are becoming economical and attractive to produce. CBM, or coalbed methane, currently accounts for approximately ten percent of all natural gas production in the U.S., and that number is increasing. Therefore, it is critical to understand what makes a reservoir a viable option for production development.;Many current tools used to predict the performance of a reservoir rely heavily on unknowns about the formation, and are therefore risky and complex. Numerical methods and computer simulations can greatly aid in the evaluation, but still remain an incomplete description of …
Suffix Structures And Circular Pattern Problems, Jie Lin
Suffix Structures And Circular Pattern Problems, Jie Lin
Graduate Theses, Dissertations, and Problem Reports (ETD)
The suffix tree is a data structure used to represent all the suffixes in a string. However, a major problem with the suffix tree is its practical space requirement. In this dissertation, we propose an efficient data structure -- the virtual suffix tree (VST) -- which requires less space than other recently proposed data structures for suffix trees and suffix arrays. On average, the space requirement (including that for suffix arrays and suffix links) is 13.8n bytes for the regular VST, and 12.05n bytes in its compact form, where n is the length of the sequence.;Markov models are very popular …
Pedagogical Practices: Nurturing And Maintaining Democratic Habits, Lucretia Marie Hubler-Larimore
Pedagogical Practices: Nurturing And Maintaining Democratic Habits, Lucretia Marie Hubler-Larimore
Graduate Theses, Dissertations, and Problem Reports (ETD)
This case study examined the pedagogical practices of four teachers of one public elementary school whose mission seeks to nurture and maintain democratic habits for participation in a democratic society. Historically, public schools have been charged with the duty of preparing young minds to live within in a democratic society and as such this argument has been cited as one of the fundamental reasons for providing public financial support of schools. The exploration of how pedagogical choices and curriculum development were used to create opportunities for experiencing democracy was considered within the specific social contexts of the school. Contexts considered …
Evaluation Of Basal Area Projection Models For Unthinned And Thinned Central Appalachian Hardwood Forest Stands, Ivan Zhelev Anastasov
Evaluation Of Basal Area Projection Models For Unthinned And Thinned Central Appalachian Hardwood Forest Stands, Ivan Zhelev Anastasov
Graduate Theses, Dissertations, and Problem Reports (ETD)
Several basal area projection models, originally developed for pine plantations, were proposed for potential use in central hardwoods. The data came from five different studies that were established throughout the central Appalachian region. Analysis of variance was performed to detect significant differences among the different treatments and studies. The results indicated that there is a significant difference in basal area growth between unthinned and thinned plots as well as between the different studies. Each selected model was then fitted to the re-measured hardwood plot data, using a non-linear procedure. An assessment was perform on the analysis of variance outcome, residual …
Apical Leakage Of A New Root Canal Sealer, Nathan E. Beam
Apical Leakage Of A New Root Canal Sealer, Nathan E. Beam
Graduate Theses, Dissertations, and Problem Reports (ETD)
A new endodontic root canal sealer, iRoot SP, has been introduced. This bioceramic root canal sealer claims to be a superior sealing and filling material for root canals. Although the manufacturer advocates the use of a single cone technique with this sealer, they state that it may also be used with lateral compaction and warm vertical condensation. The purpose of this study was to compare in vitro apical microleakage of iRoot SP root canal sealer to AH Plus sealer when used in conjunction with a single cone technique and lateral compaction technique.;Eighty six mesial roots of mandibular molar teeth with …
Feature Selection Methods For Boosted Crosspectral Face Recognition, Sirisha Boothapati
Feature Selection Methods For Boosted Crosspectral Face Recognition, Sirisha Boothapati
Graduate Theses, Dissertations, and Problem Reports (ETD)
As a successful technology in commercial as well as surveillance applications, face recognition has attracted significant attention. Wide range of applications using this technology has been a constant motivation for research developments over the past decade. Major issues with color images are illumination variation and pose change in which illumination variation has been overcome by involving Short and Long Wave Infrared imagery. However, properties of color images and Short and Long Wave Infrared images are different. Their crossmatching presents a great challenge.;In this thesis, we propose a methodology that will be able to crossmatch color face images and Short Wave …
Oral Cancer Screening Techniques Utilized By West Virginia Dental Hygienists, Ashlee B. Charnoplosky
Oral Cancer Screening Techniques Utilized By West Virginia Dental Hygienists, Ashlee B. Charnoplosky
Graduate Theses, Dissertations, and Problem Reports (ETD)
Oral cancer has become a major public health problem. Health care professionals need to assume the responsibility of effectively screening all patients in their care for early signs of this disease. Too often, oral cancer is not diagnosed until it is in its later stages when treatment is not as effective. The late diagnosis contributes to the large number of deaths each year that could have been prevented had the patient had adequate screenings. Currently, there is no mandated law on providing oral cancer screenings.;The purpose of this study is to examine the oral cancer screening protocols utilized by practicing …
Automated Image Analysis Comparing Edta And Maleic Acid In Smear Layer Removal From Instrumented Human Posterior Root Canals, Lauren P. Namsupak
Automated Image Analysis Comparing Edta And Maleic Acid In Smear Layer Removal From Instrumented Human Posterior Root Canals, Lauren P. Namsupak
Graduate Theses, Dissertations, and Problem Reports (ETD)
EDTA has long been the gold standard for smear layer removal in endodontics. Recently Ballal has suggested maleic acid as a more effective alternative to EDTA, but more research is needed before it can be used in clinical practice. This study focused on comparing EDTA to maleic acid when removing the smear layer from curved root canals in human posterior teeth. Fifty-one posterior teeth were randomly selected and assigned to three groups: 17% EDTA, 7% maleic acid, and a 0.9% saline control. The teeth were prepared using K-files to an ISO size 40 MAF, step-backed to an ISO size 60 …
Juxtaposition Of In-Use Vehicular Emissions Measurement Equipment, Brock A. Merritt
Juxtaposition Of In-Use Vehicular Emissions Measurement Equipment, Brock A. Merritt
Graduate Theses, Dissertations, and Problem Reports (ETD)
A study was performed to compare measurement capabilities of two commercially available in-use portable emissions measurement systems, from different generations, in order to determine how or if changes to emissions testing standards have affected in-use equipment. The two in-use systems from different generations were the Sensors, Inc. SEMTECH-D, which would be considered first generation because it was built under the CFR 40, Part 86 standard, and the Horiba, Ltd. OBS-2200, which was considered second generation because it was built under the updated CFR 40, Part 1065 standards. Both systems underwent a series of tests in the laboratory and on-road. For …
Fish And Aquatic Macroinvertebrate Communities In The Cacapon River, West Virginia, Stephen Selego
Fish And Aquatic Macroinvertebrate Communities In The Cacapon River, West Virginia, Stephen Selego
Graduate Theses, Dissertations, and Problem Reports (ETD)
Stream restoration, involving both in-stream and riparian techniques, was conducted on an impaired stretch of the Cacapon River, West Virginia. Fish and aquatic macroinvertebrate communities were sampled before, during, and after restoration at the restoration site and four other sites (two impaired, two natural) to determine the success of the restoration project. Overall, bluntnose minnows (Pimephales notatus) were the most abundant fish, and riffle beetles (Stenelmis sp.) were the most abundant macroinvertebrates collected. Both communities were negatively impacted by the restoration efforts in the short-term, but recovered quickly. Fish communities returned roughly to the state observed pre-restoration. Macroinvertebrate communities increased …
Immediacy And Gesture, Aaron Anslow
Immediacy And Gesture, Aaron Anslow
Graduate Theses, Dissertations, and Problem Reports (ETD)
The concepts of immediacy and gesture are described in this thesis and their relation to my ceramic work. This thesis also discusses the historic and contemporary influences that contribute to my work, as well as my personal history, travel, and technical research into different clay bodies, slips, glazes, and firings.
(In)Significant Objects, Kurt A. Teeter
(In)Significant Objects, Kurt A. Teeter
Graduate Theses, Dissertations, and Problem Reports (ETD)
This thesis describes my MFA Thesis Exhibition: (In)Significant Objects, which was on display at the Paul Mesaros Gallery at the West Virginia University Creative Arts Center from November 29 to December 11, 2010. The exhibition included twenty-one large-scale ceramic storage jars and this written thesis explains why I, as an artist/craftsman, still find significance in these objects. By basing my vessels on ancient Greek amphoras, I am indicating that these forms, though heavy and obsolete by contemporary American standards, still have a role as decorative objects expressing vitality, idealism, and active discovery.
A Study Of Additives For Aquagel/Bentonite Based Drilling Fluids In Relation To Filtration And Rheological Properties, Smectite Inhibition And Their Application To Marcellus Shale, Ike Eleanya O. Onuoha
A Study Of Additives For Aquagel/Bentonite Based Drilling Fluids In Relation To Filtration And Rheological Properties, Smectite Inhibition And Their Application To Marcellus Shale, Ike Eleanya O. Onuoha
Graduate Theses, Dissertations, and Problem Reports (ETD)
Since the dawn of rotary drilling, engineers and scholars have persevered, through study and research, to formulate an optimum inhibitive drilling fluid for the shale formations. Although fluids with acceptable performance in shale have been formulated, one only needs to examine the word "acceptable" in the context above to realize that the industry has ongoing activities to formulate an optimum inhibitive fluid for the Marcellus Shale. In accordance, this research seeks to fabricate a means of reducing formation damage (permeability reduction), stuck pipe incidences, heaving, sloughing and caving which are all due to the swelling of Smectite clay and shale. …
Evaluation Of A Protocol Change To Improve Screening Of Mineral Bone Disorders In Patients With Stage 3 Chronic Kidney Disease, Jarena Kelly
Evaluation Of A Protocol Change To Improve Screening Of Mineral Bone Disorders In Patients With Stage 3 Chronic Kidney Disease, Jarena Kelly
Graduate Theses, Dissertations, and Problem Reports (ETD)
Chronic kidney disease (CKD) is a growing worldwide problem. Patients with CKD are at great risk for multiple health problems and ultimately face end stage renal disease (ESRD). One of the problems of concern is the loss of bone mass, termed mineral bone disorders (MBD). The literature reveals that bone mass loss can begin as early as stage 3 CKD. The National Kidney Foundation (NKF) Clinical Practice Guideline (2003), and The Kidney Disease: Improving Global Outcomes (KDIGO, 2009) recommend that persons identified in stage 3 CKD be screened for hypovitamintosis D, elevated intact parathyroid (iPTH) levels, and abnormal calcium and …
Evaluation Of A Medication Reconciliation Practice Change In Primary Care, Laura L. Danals
Evaluation Of A Medication Reconciliation Practice Change In Primary Care, Laura L. Danals
Graduate Theses, Dissertations, and Problem Reports (ETD)
Statement of the Problem and Significance: Inaccuracies in patients' medication lists in primary care are safety concerns. Extensive research has been conducted on medication practices and patient safety within the hospital; however, the research for primary care is sparse.;Study Design: Lippitt's Change Theory was utilized as the theoretical framework. The project design was based on evidence derived from the 2008 The Joint Commission National Patient Safety Goals. The study was performed over a period of three months. Pre-intervention data was gathered and analyzed for the use of current electronic medication records. The healthcare team was educated on the electronic medication …
The Evaluation Of The Effectiveness Of A Structured Educational Program On Nurses' Assessment Ratings In An Epilepsy Monitoring Unit, Mona Baran Stecker
The Evaluation Of The Effectiveness Of A Structured Educational Program On Nurses' Assessment Ratings In An Epilepsy Monitoring Unit, Mona Baran Stecker
Graduate Theses, Dissertations, and Problem Reports (ETD)
Background: There has been little published about nursing care on an epilepsy monitoring unit (EMU). Patients with epileptic and non-epileptic events require close monitoring and thorough assessments. In addition, it is especially important that these patients are provided a safe environment.;Purpose: The purpose of this project was to evaluate the impact of a structured educational program for nurses on an EMU in the assessment of patients with clinical events by quantitatively measuring nursing assessments before and after the program.;Objectives: There were two objectives for this project. The first objective was to measure nurses' assessments of patients on the EMU in …
Political Textbooks In A Political World: A Case-Study Of An Estonian History Textbook, J. Berkeley Bentley
Political Textbooks In A Political World: A Case-Study Of An Estonian History Textbook, J. Berkeley Bentley
Graduate Theses, Dissertations, and Problem Reports (ETD)
In the 1990s, the Estonian state was characterized by a relatively rapidly developing political scene. The developments occurred in such a short time period as to render the national history textbook ineffective and thus ill-suited to its perceived use as a tool of socialization into the state, providing an excellent case-study of the limitations of the relationship between textbook and state. This study analyzes the narrative of an Estonian national history textbook produced in the mid 1990s and uses the product of that narrative analysis to map the shifting political winds as represented in the professional rhetoric of the Estonian …
Development Of Substituted Dihydrofurans And 1,2,3-Nh-Triazoles Through Lewis Base Catalyzed Cascade Condensation And Their Application In Synthesis Of Chiral Triazole Derivatives Through Mitsunobu Reaction, Tao Liao
Graduate Theses, Dissertations, and Problem Reports (ETD)
A one-pot synthesis of substituted dihydrofurans was developed from a Lewis base catalyzed three-component cascade condensation with nitroalkenes, aldehydes and 1,3-dicarbonyl compounds. A large substrate scopes were prepared with excellent diastereoselectivity (trans product only) and excellent yield (up to 95%).