Digital Commons Network^™

Cognitive And Affective Influences On Decision-Making Strategies And Outcomes, Michaela S. Reardon

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examines how factors such as emotion and planning abilities, determine decision-making strategies and outcomes. Consumer-based decision tasks are one way for researchers to measure the decision-making process and outcomes of individuals, while bringing an element of reality to the task through the utilization of decisions about everyday items that someone might purchase (e.g., a car, apartment, etc.). Using these types of tasks, researchers can measure the quality of a decision (e.g., did the participant come up with the best solution?), as well as the decision or search strategy. Previous research shows that cognitive factors are important when individuals …

Analyzing Mathematicians' Concept Images Of Differentials, Timothy Shawn Mccarty

Graduate Theses, Dissertations, and Problem Reports (ETD)

The differential is a symbol that is common in first- and second-year calculus. It is perhaps expected that a common mathematical symbol would be interpreted universally. However, recent literature that addresses student interpretations of differentials, usually in the context of definite integration, suggests that this is not the case, and that many interpretations are possible. Reviews of textbooks showed that there was not a lot of discussion about differentials, and what interpretations there were depended upon the context in which the differentials were presented. This dissertation explores some of these issues. Since students may not have the experience necessary to …

A Coordination-Based Approach To Subnational Variations In Split-Ticket Voting: The Case Of Ghana 1996-2016, Samuel Kofi Darkwa

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation seeks to explain the causes of split-ticket voting (skirt and blouse voting) in emerging democracies like Ghana. The analysis carried out here has been approached at three levels. This is because voters’ decisions in the voting booth are affected by factors within the larger political environment which are often beyond the individual voter. Thus, the three approaches employed here consider individual-level, constituency-level, and elite-level factors that affect the phenomenon. In each case different datasets were used to examine split-ticket voting. The analysis reveals that the individual-level factors (demographic characteristics and political information variables) are weak in explaining ticket …

Automatic Detection Of Insecure Codes In Stack Overflow, Shifu Hou

Graduate Theses, Dissertations, and Problem Reports (ETD)

As the popularity of modern social coding paradigm such as Stack Overflow grows, its potential security risks increase as well (e.g., insecure codes could be easily embedded and distributed). To address this largely overlooked issue, we bring a new insight to exploit social coding properties in addition to code content for automatic detection of insecure code snippets in Stack Overflow. To determine if the given code snippets are insecure, we not only analyze the code content, but also utilize various kinds of relations among users, badges, questions, answers, code snippets and keywords in Stack Overflow. To model the rich semantic …

Following The Leaders: Issue Attention And Agenda Dynamics In Women’S Health Care Policy, Kara Anne Fisher

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation focuses on shifts in issue attention in the policy process and examines policy changes. Describing agenda setting is important not only for understanding congressional behavior in general but also for understanding the institutional context of other political behavior. I focus on the processes of positive feedback to explain periods of dramatic policy changes observed over a long period of time.

The purpose of this study is to examine the changes in the politics of health policy which opened the door to women’s health care as an important feature of health politics. Thus, my research is motivated by three …

Scheduling For Cooperative Energy Harvesting Sensor Networks, Ahmed Ammar

Graduate Theses, Dissertations, and Problem Reports (ETD)

In cooperative communication networks, the source node transmits its data to the destination either directly or cooperatively with a cooperating node. When using energy harvesting technology, where nodes collect their energy from the environment, the energy availability at the nodes becomes unpredictable due to the stochastic nature of energy harvesting processes. As a result, when the source has a transmission, it cannot immediately transmit its data cooperatively with the cooperating node. It first needs to determine whether the cooperating node has sufficient energy to forward its transmission or not. Otherwise, its transmitted data may get lost. Therefore, when using energy …

Evaluating Post-Fire Plantation Restoration In A Mixed Conifer Forest In The Sierra Nevada, Iris C. Allen

Graduate Theses, Dissertations, and Problem Reports (ETD)

Forests in the western United States have experienced a shift from historical disturbance regimes in the past century. Many of these changes were induced by European settlers logging the forests and suppressing fires. In the past, the dry mixed conifer forests of California’s Sierra Nevada mountains experience frequent, low to mixed severity fires. This fire regime helped maintain a heterogeneous landscape comprised of groups of trees and openings. However, due to fire suppression and high grading logging, forest structure has changed; there are less openings and more small, fire-intolerant trees that can carry a fire into the forests crown. The …

Systematic Control Of Aged Skeletal Muscle Following High-Intensity Stretch-Shortening Contraction Exercise Training: Epigenomic Regulation And Signaling Factors Underpinning Adaptation, Marshall Alan Naimo Jr.

Graduate Theses, Dissertations, and Problem Reports (ETD)

Sarcopenia, the age-related decline in skeletal muscle mass, results in a loss of strength and functional capacity, which subsequently increases the risk of disease, disability, frailty, and all-cause mortality. Exercise is known to be an efficacious paradigm for improving health and attenuating or preventing many chronic diseases. For the previous two decades, our laboratory has established an in vivo rodent dynamometer model to explore the effects of various skeletal muscle training paradigms following stretch-shortening contractions (SSCs).The responses tohigh-intensity resistance-type exercise training (RTET) using this physiological model ranges from adaptation, characterized by enhanced skeletal muscle performance along with increased muscle mass, …

Measuring The Effects Of Interpretive Journalism On Trust And Credibility Perceptions In The Context Of Political News Coverage, Scott William Siker

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examines the effects of interpretive journalism on trust and credibility perceptions. Specifically, this study investigates interpretive journalism in the context of political news coverage and also examines the relationship between political ideology and the aforementioned variables. This study uses a 2 (interpretive journalism; fact-based journalism) x 2 (political ideology: conservative leaning; liberal leaning) between-subjects online experiment to test the proposed hypotheses. Findings illustrate the predictive value of credibility to trust within the context of political news coverage. Additionally, this study shows that individuals exhibit higher perceptions of trust and credibility towards fact-based political coverage as opposed to interpretive …

Efficacy Of Cognitive Training Intervention With A Coaching Component On Attention And Response Control In Emerging Adults, Thomas Craig Foster Jr

Graduate Theses, Dissertations, and Problem Reports (ETD)

Cognitive training, a nonpharmacological intervention for attention and learning-related difficulties, is a promising treatment option for emerging adults. The aim of this study was to explore the efficacy of a cognitive training program with a coaching component on measures of attention and response control in university students. Between 2014 and 2017, 39 students with reported attention concerns engaged in a cognitive training program over ten weeks (20 sessions) at a university counseling center. Differences in participants’ attention and response control as measured by the IVA-2 Continuous Performance Test (CPT) were evaluated before and after the intervention. Demographic data, including clinician …

Novel Computational Methods For Catalytic Applications, Gihan Uthpala Panapitiya

Graduate Theses, Dissertations, and Problem Reports (ETD)

Thiolate protected nanoclusters gold nanoparticles are gaining interest of many researchers due to their promising applications in a variety of fields the development of synthesizing techniques capable of producing atomically precise nanoclusters with high purity. Au₂₅(SR)₁₈ is one of the widely studied nanoclsuters due its remarkable stability. In this first part of this study, we explore the structural, electronic and catalytic properties of bimetallic Au_25−xAg_x(SR)₁₈ (for x = 6, 7, 8). Due to the combinatorial enormity of the total number of possible alloyed isomers, we choose a randomly selected subset corresponding to …

Aspect Influence On Productivity When Applying The Deferment Harvest Method In Mixed-Oak Hardwood Forests In West Virginia, Breanne Held

Graduate Theses, Dissertations, and Problem Reports (ETD)

The deferment harvest method is a new forest management treatment in central Appalachian hardwood forests. It is intended to primarily improve aesthetics by leaving select residual trees in the forest stand beyond the establishment of the regeneration cohort. However, there are concerns with residual tree quality due to the development of epicormic branches and if the presence of forest canopy influences the species composition and development of the regeneration. Topographic aspect can influence differences in productivity in both the residual and regeneration cohorts. This study examined if residual tree quality for timber value and a desirable species composition of the …

Petrophysical And Geomechanical Characterization Of The Marcellus Shale In The Appalachian Basin, Yixuan Zhu

Graduate Theses, Dissertations, and Problem Reports (ETD)

In recent years, more and more attention is paid to shale gas and hydrocarbon liquids exploration and exploitation in unconventional reservoirs. With the development of horizontal drilling and hydraulic fracturing, production from unconventional reservoirs has been greatly increased. However, not all wells, regions and basins harbor highly successful shale gas and liquids producers. In order to improve the production efficiency and reduce the cost of projects, detailed analysis needs to be undertaken to characterize the reservoir. As opposed to conventional reservoirs, extraction of gas in the unconventional reservoir is dependent not only on the reservoir quality, but also on completion …

Glial Cell Expansion And Intercellular Signaling In The Developing Medial Nucleus Of The Trapezoid Body (Mntb), Ashley N. Brandebura

Graduate Theses, Dissertations, and Problem Reports (ETD)

Neural circuit formation is a complex process involving coordinated communication between neurons, glia and vascular-associated cells (VACs). Each cell type is responsible for a unique transcriptional and translational contribution to tissue maturation. Deciphering the intercellular signaling patterns which guide neural circuit formation during normal development is thus an essential step in understanding which components of neural circuit formation go awry in neurodevelopmental disorders. The medial nucleus of the trapezoid body (MNTB), located in the auditory brainstem, was used as a model system to study the dynamics of neural circuit formation because it contains a mostly homogeneous population of postsynaptic neurons …

Infinite Matroids And Transfinite Sequences, Martin Andrew Storm

Graduate Theses, Dissertations, and Problem Reports (ETD)

A matroid is a pair M = (E,I) where E is a set and I is a set of subsets of E that are called independent, echoing the notion of linear independence. One of the leading open problems in infinite matroid theory is the Matroid Intersection Conjecture by Nash-Williams which is a generalization of Hall’s Theorem. In [31] Jerzy Wojciechowski introduced µ- admissibility for pairs of matroids on the same ground set and showed that it is a necessary condition for the existence of a matching. A pair of matroids (M,W) with common ground set E is µ-admissible if a …

Genetic And Pharmacologic Studies Towards Prevention Of Opioid Use Disorder, Shane W. Kaski

Graduate Theses, Dissertations, and Problem Reports (ETD)

Endogenous opioids mediate both analgesic and affective responses to stress. While the mu opioid receptor (MOR) produces the reinforcing euphoric effects responsible for the high abuse potential of traditional opioid analgesics, the kappa opioid receptor (KOR) is hypothesized to mediate the dysphoric component of stress. With increasing rates of opioid addiction, extensive research efforts are focused on better understanding each of these systems and how they interact, with the goal of developing less addictive pain management strategies and better approaches to addiction treatment. With this in mind, we conducted both clinical and pre-clinical studies aimed at developing better treatment strategies …

Stigma, Attitudes, And Intentions To Seek Mental Health Services In College Student-Athletes, Robert C. Hilliard M.S.

Graduate Theses, Dissertations, and Problem Reports (ETD)

Previous researchers have found several factors that act as barriers to college student-athletes seeking mental health services (López & Levy, 2013; Moore, 2017). One common factor throughout these studies is stigma, which is known to be associated with less favorable attitudes toward seeking help (Moreland et al., 2018). However, researchers have not explored how stigma and attitudes might influence intentions to seek counseling and actual help-seeking behaviors in student-athletes. Additionally, there is a dearth of research identifying the topics for which student-athletes are most willing to seek help. Therefore, the purposes of this study were to investigate predictors of mental …

What Does A Marginalized Community Say About Its Experiences In A Two-Year, Service-Learning Project?, Shanequa Smith

Graduate Theses, Dissertations, and Problem Reports (ETD)

Institutions of higher education are increasingly engaging with communities through service-learning projects to provide students with practice in their chosen fields and assistance to communities. By now, such efforts have been described in a growing body of literature. However, little has been reported on the perspectives and experiences of community members. The purpose of this phenomenological study is to capture and understand the perceptions and experiences of community members who participated in a two-year service-learning project, with the goal of sharing lessons to improve university-community engagement relationships and practices. A qualitative phenomenology approach, using semi-structured interviews, was the method used …

An Assessment Of Emotional-Force And Cultural Sensitivity The Usage Of English Swearwords By L1 German Speakers, Sarah Dawn Cooper

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study examines the usage of English swearwords by L1 German speakers and poses the following three questions: (1) Which English swearwords do native-speakers of German use? (2) In which situations do German speakers use English swearwords? Why do they use English swearwords instead of their German counterparts? (3) What emotional weight do they apply to swearwords in English (i.e. How taboo are they)? In an effort to understand Germans’ use of swearwords today, potential attributing factors were assessed and evaluated in a 15-question survey comprised of both qualitative and quantitative components that was taken by 403 participants from Germany …

An Experimental Investigation Of The Banana Dehydration Process., Donnique Kim Denise Sherman

Graduate Theses, Dissertations, and Problem Reports (ETD)

Drying food is one of the well-known methods of food preservation. Food preservation methods, like drying, slow down the deterioration of foods as well as prevents the growth of microorganisms. Food preservation allows for an extension of shelf life and prevents food from spoiling. The method used in this study is known as convective or direct drying. As the ambient air heats up from a convective source the relative humidity reduces which accelerates the drying force and decreases drying time. The reduction in relative humidity allows for moisture to move from the food, such as banana chips, to the air. …

Nondestructive Evaluation Of Concrete Bridge Columns Rehabilitiated With Fiber Reinforced Polymers Using Digital Tap Hammer And Infrared Thermography, Andrew Scott Wheeler

Graduate Theses, Dissertations, and Problem Reports (ETD)

Nondestructive Evaluation of Concrete Bridge Columns Rehabilitated With Fiber Reinforced Polymers Using Digital Tap Hammer and Infrared Thermography Andrew Wheeler In 2017, the American Society of Civil Engineers (ASCE) gave bridges in the U.S. a C+ rating. Almost four out of every ten bridges are 50 years or older. In 2016, there were on average 188 million trips across a structural deficient bridge each day. With such a large number of bridges needing replaced or repaired, transportation officials are utilizing various bridge rehabilitation techniques to provide a cost effective solution to such a widespread problem. One rehabilitation technique involves the …

Survey For Naturally Occurring Radioactive Materials At A Gas Fractionation Plant, Brittany Diane Jones

Graduate Theses, Dissertations, and Problem Reports (ETD)

Marcellus Gas Company (MGC) is a midstream energy company operating natural gas gathering and processing assets in the Marcellus Shale region, primarily in Ohio, West Virginia, and Pennsylvania. At the time of the study, MGC was interested in surveying for naturally occurring radioactive material (NORM) at their primary fractionation facility in the region, the Ohio River Fractionation Plant. A NORM survey, consisting of over 300 measurements, was conducted at the site to evaluate the need to implement the company's written NORM program and to assess for additional controls to protect employees against ionizing radiation exposure. Additionally, a qualitative exposure assessment …

Gas County: A Case Study On How West Virginia's Recent Gas Boom Is Transforming A County, Egill Karlsson

Graduate Theses, Dissertations, and Problem Reports (ETD)

A case study on horizontal hydraulic fracturing through the eyes of Doddridge County, WV; how it's affected the residents and various stakeholders in different ways, from economy to health and environment.

Caregiver Selection Of Treatments For Their Child With Autism, Amy Kurowski-Burt

Graduate Theses, Dissertations, and Problem Reports (ETD)

This project was completed to understand what treatments caregivers are selecting for their child with autism and why treatments were selected and discontinued. Caregivers of children with autism participated in a mixed methods study. An online survey was completed (N=127) to identify treatments used for their child. Interviews were completed (n=14) to understand why treatments were selected and discontinued. Selection of medical, dietary, therapeutic, complimentary/ alternative medicine, community-based, behavioral, and educational treatments were mostly influenced by recommendations of others. Caregivers reported discontinuing because relationships and professionalism were lacking between provider and family. Providers must consider all the variables that influence …

Crop Rotations That Integrate Pasture Are Less Vulnerable To Nitrogen Leaching Due To Changes In Microbial Community Composition And Reduced Nitrification, Jeth Gv Walkup

Graduate Theses, Dissertations, and Problem Reports (ETD)

Agroecosystems occupy a large portion of the United States and receive a disproportionally high amount of terrestrial nitrogen inputs. As application rates increase, nitrogen use efficiency declines leading to higher rates of nitrogen loss. To develop sustainable agricultural practices, the long-term effects of management practices on the soil microorganisms that perform central roles in the transformation of nitrogen need to be studied. To study the long-term impacts of compost application and pasture integration in crop rotation, samples were collected from the existing 19-year-old Organic Crop Livestock Field (OCLF) experiment on the WVU organic research farm. The OCLF experiment includes a …

Application Of Machine Learning On Fracture Interference, Dennis Wayne Chamberlain Jr.

Graduate Theses, Dissertations, and Problem Reports (ETD)

A method has been developed that locates and determines well-to-well hydraulic fracture interference (frac-hit) in shale plays using hard data. This method uses Artificial Neural Networks (ANN) with designated parameters and target outputs in conjunction with graphs of gas flowrate, tubing pressure, and cumulative gas prediction. The method was created to address the significant increase in frac-hit occurrences due to the infill wells being completed in shale plays. The production data of the well is first cleaned to eliminate outliers in the initial timeframe of the well and periods of no production so that the ANN model can be accurately …

Morphological, Genetic And Biochemical Characterization Of The Anti-Malarial Herb, Artemisia Annua Germplasm Collection At West Virginia University, Delini K. Samarasinghe

Graduate Theses, Dissertations, and Problem Reports (ETD)

Malaria is one of the deadliest diseases in human history. Nearly half of the world’s population, is at the risk in 106 countries. Only in 2016, this disease killed about 445,000 people, 72% of them being children under age five. It also accounts for US $12 billion dollars of direct costs in Africa alone. Five different species of Plasmodium cause malaria but P. falciparum is the most detrimental one, causing 50% of all malaria cases and is considered as the deadliest parasite in humans. Artemisinin (ART), a 15 C sesquiterpenoid is currently the only precursor to the most effective anti-malarial …

Automated Cleaning Of Identity Label Noise In A Large-Scale Face Dataset Using A Face Image Quality Control, Mohamad Al Jazaery

Graduate Theses, Dissertations, and Problem Reports (ETD)

For face recognition, some very large-scale datasets are publicly available in recent years which are usually collected from the internet using search engines, and thus have many faces with wrong identity labels (outliers). Additionally, the face images in these datasets have different qualities. Since the low quality face images are hard to identify, current automated identity label cleaning methods are not able to detect the identity label error in the low quality faces. Therefore, we propose a novel approach for cleaning the identity label error more low quality faces. Our face identity labels cleaned by our method can train better …

On Designing An Ecg-Based Intelligent System: Utilizing The Heart’S Electrical Activity To Recognize Humans And Detect Arrhythmia, Sara Saeed Abdeldayem

Graduate Theses, Dissertations, and Problem Reports (ETD)

The electrocardiogram (ECG) signal is the bioelectrical signal that reflects the heart's activity. It has been extensively used as a diagnostic tool since it holds information about the cardiac health condition. However, recent researches have shown that it exhibits an inter-subject variability property. Therefore, it can be used as a biometric-based modality for either identification or verification purposes. Nevertheless, some of the challenges are faced while employing such a signal. For instance, ECG signal is prone to noise, accordingly, noise filters should be designed to remove the noise while keeping the signal properties. Moreover, factors such as medications, health condition, …

Midterm 2018 And Targeting Latino Community Through Misinformation And Disinformation Online, Manjul Shrestha

Graduate Theses, Dissertations, and Problem Reports (ETD)

How has the Latino community been targeted by digital propaganda during the 2018 midterm elections in the US? How might this affect their involvement in and around the election? This thesis starts to answer these questions through a data analysis on two of the most prominent and popular social media platforms for political discussion: Twitter and Reddit. This study analyzed people’s posting patterns over time, the digital traces of the individuals pushing the majority and most popular content, and Latino candidates’ interaction on Twitter. This research provides evidence that on Twitter there are two main actors discussing Latinos and politics: …