Digital Commons Network^™

Virtual Reality Game Classroom Implementation: Teacher Perspectives And Student Learning Outcomes, Mohammed Mubarak Alfadil

Dissertations

This study explored the influence of the virtual reality game (VRG) House of Languages on the ESL vocabulary acquisition of intermediate school students and establish how VR technology aids in improving the ESL vocabulary skills. A quasi-experimental design helped determine the impact of the VR use intervention on the learning process over the traditional ESL vocabulary acquisition method. Participation of 64 students divided randomly into an experimental group and control group; each group contained 32 students and their teacher from a local suburban intermediate school in the eastern region of Saudi Arabia. The findings from this study of independent t-tests …

Environmental Contaminant Exposure And Effects On Bats: Studies In Sichuan Province, China And Colorado, U.S.A., Laura Heiker

Dissertations

As the world’s only flying mammals, bats fill an important ecological role in most ecosystems, acting as agents of seed dispersal, pollination, fertilization, and insect control. The human-mediated release of environmental contaminants has been implicated in the decline of many bat populations over the past few decades. Given bats’ ecological significance, I studied how bat presence and activity related to contaminated food and water sources in two global regions: 1) in and around the growing urban city of Chengdu, the capital of Sichuan Province, China, and 2) along the eastern slope of the Rocky Mountains in Colorado, U.S.A., which has …

Affective Domain Learning In High-Fidelity Simulation: Students’ Perspectives, Ketty M. Holt

Dissertations

Affective domain learning is an integral element to developing nursing students who can provide holistic, patient-centered nursing care. Often an invisible objective in nursing education, affective learning is rarely described beyond the first two levels of the domain: receiving and responding. In this phenomenological inquiry, the experiences of undergraduate nursing students, while participating in high-fidelity simulation, were examined and described for affective domain learning. In addition, this study compared the descriptions of third- and fourth-year students in an effort to understand the progressive nature of affective learning. Twenty-five third- and fourth-year students from the baccalaureate nursing programs of two universities, …

Biracial Multiracial Lesbian Gay Bisexual Queer Student Leaders Making Meaning Of Their Experiences, Robert Jason Kunstman

Dissertations

Five biracial multiracial lesbian gay bisexual queer student leaders shared stories about their undergraduate experiences at a prestigious southern university. Critical cultural and constructivist paradigm provided the framework for supporting this narrative inquiry. Through multiple interviews, participants shared stories of their background, educational journey, and the impact they hope to have in the future. Through those interviews, participants also shared stories of their journey to understanding their racial identity, sexual identity, leadership experiences, and experiences centered on the intersections of race, sexuality, and leadership. Stories explored participants’ sense of belonging, code switching, functioning in racial and sexual identity specific spaces, …

The Role Of Human Resources In Organizational Restructuring: Perceptions Of Hrdepartment, Line Managers, And Employees, Mohamed Abdulla Mohamed Al Hammadi

Dissertations

The process of organizational restructuring is an integral and common aspect that has been integrated into the growth and development of organizations all around the globe. It is mainly undertaken to ensure that organizations are up to date with ever-changing external and internal business environments to improve organizational effectiveness and efficiency. The government of Abu Dhabi emirate has developed a long-term plan to guide the future growth of the emirate (Abu Dhabi 2030). As a result, all of its departments and entities need to align to this strategic plan, which involves change. In many cases, this has forced organizations/entities to …

The Transferability Of Soft Skills Of Women Veterans To Corporate America, Chanty Bradley Clay

Dissertations

The purpose of this study was to explore the transfer of soft skills of women veterans to their post military career in corporate America in order to support their career success by helping them market and utilize their soft skills and experience in their post military career, and to better understand the employability issues of women veterans. Thorndike and Woodworth’s (1901) Identical Elements Theory was used to better understand how women veterans transferred learning in one context (military) to another similar context (corporate America) and their identification, marketability, and utilization of these learned soft skills to the workforce. A narrative …

Comparative Assessment Of Agricultural Literacy In Selected K-5 Classrooms Employing Agriculture In The Classroom Methodologies: A Solomon Four-Group Analysis, Mary Margaret Fischer

Dissertations

The significance of agriculture to future generations is unparalleled. The United Nations projects the global population to swell to 9.75 billion people by 2050, and to proliferate to 11.2 billion by 2100. The non-agricultural population has little to no understanding or comprehension of the complexities of sustaining a viable agricultural system. Agricultural literacy is an area often unseen and rarely discussed outside specific agricultural disciplines. Society does not view agriculture as being important, yet it is important that society be properly educated on issues in order to reach well-informed decisions and render prudent choices that impact the world around them. …

Women And Work-Life Balance: A Narrative Inquiry Of Working Single Mothers Balancing Family And Work, Casheena Atari Stephens

Dissertations

The purpose of this study was to explore working single mothers’ work-life balance in order to better understand how employers can assist them. Role theory, role conflict theory, and spillover theory were utilized to examine how working single mothers experience work-life balance and how they perceive it. In this study, the researcher sought to discover, analyze, and report work-life balance experiences of working single mothers through extended narrative accounts, which answer the following research questions: 1. In what ways do working single mothers strive to attain work-life balance? 2. What challenges do working single mothers encounter that affect their ability …

An Inventory Of Selected Mentor And Protégé Motivational And Effectiveness Characteristics At The United States Air Force Academy (Usafa), David Huston

Dissertations

The purpose of this dissertation was to examine the mentoring culture at USAFA in terms of selected mentor and protégé motivational and effectiveness characteristics of faculty and administrative personnel (referred to as permanent party members) (mentors) and cadets (protégés). Results offer evidence which support the presence of a somewhat healthy culture in that those who indicated they were currently mentoring cadets were more generative, altruistic, and wanted to mentor cadets more compared to those who indicated they were not mentoring cadets. However, those who were currently mentoring cadets did not necessarily possess better emotional intelligence compared to non-mentors. Also, cadets …

Dna-Binding And Cellular Uptake Properties Of Pyrrole-Imidazole Polyamides, Maria J. Scuderi

Dissertations

Pyrrole-imidazole polyamides (PAs) represent a class of synthetic ligands that bind to the minor groove of DNA through hydrogen bonds and can be programmed to recognize predetermined DNA sequences. Potential applications of these compounds include gene expression modulation, antimicrobial activity and cell imaging.

Studies conducted in our lab in collaboration with NanoVir have shown that large PAs exhibit antiviral activity against Human Papillomavirus (HPV), which is the most common sexually transmitted infectious agent in the US and the primary factor for the development of cervical cancer. PAs act against HPV by targeting the viral DNA and promoting its selective elimination …

White And African American Elementary Aged Student Perspectives Of School Climate And The Relationship To Academic Achievement, Jeremy Spoor, Rachel Turney

Dissertations

The achievement gap between White and African American students on the Missouri Assessment Program (MAP) is an educational phenomenon that has been around for generations and yet to be fully understood or eliminated. This study investigated the difference in school climate perceptions between African American and Caucasian (sic) students on a district climate survey and the possible connections to the achievement gap on the MAP tests. The 2015-2016 student perceived school climate survey data from a mid-sized Midwestern urban school district was disaggregated and analyzed to identify specific differences in perception of school climate among the study groups.

MAP test …

Parasitism Of Free-Ranging Neotropical Primates: Examining Parasite-Host And Parasite-Parasite Relationships, Gideon A. Erkenswick

Dissertations

Parasites are infectious agents that require resources from host organisms to complete all or part of their lifecycles. It is customary for wild animals to acquire and maintain multiple parasitic infections during their lifetime. The effects of parasites on hosts vary across demographic and environmental variables, and in relation to each other. Moreover, the propensity for a host animal to acquire an infection can be influenced by other host species in the area that are susceptible to the same parasites. This dissertation describes and explores the natural parasite assemblage of a free-ranging community of nonhuman primates in the Peruvian Amazon …

The Untold Stories Of Former Teen Mothers Who Have Achieved A Master’S Degree Or Higher, Tanya M. Benitez

Dissertations

Purpose: The purpose of this study was to shed light on former teen mothers who have “beaten the odds” by achieving a master’s degree or higher. It sought to reveal and understand what the external and internal factors are which lead to these women pursing higher education.

Methodology: The methodology of this study is a case study which explored these factors through the personal stories of former teen mothers. The study revealed the commonalities among these women.

Findings: The findings of the study determined Data collection and analysis resulted in four findings in the lived story of the 13 selected …

Biophysical Studies Of Hairpin Polyamides With Broad-Spectrum Activity Against High-Risk Human Papillomaviruses, Carlos H. Castaneda

Dissertations

Human papillomavirus is a small dsDNA virus that infects mucosal and cutaneous epithelial tissues. Persistent infection with high-risk HPV is the main etiological agent in the development of cervical cancer worldwide. Although prophylactic vaccines against HPV are available, these preventative measures are type-specific and are ineffective against existing infections. Thus, there is a pressing need for antiviral drugs with a broad-spectrum activity against HPV to eradicate existing infections, no matter the subtype.

Our group and collaborators have synthesized an extensive library of novel N-methylpyrrole/N-methylimidazole (Py/Im) hairpin polyamides (PAs) with broad-spectrum activities against three prevalent oncogenic-HPV types (HPV16, …

Beauty Is Beneficial: An Examination Of Candidate Facial Attractiveness, Gender, Qualification, And Customer Visibility On Online Recruitment Intentions, Breanna R. Wexler

Dissertations

The present study examined the effects of information included in candidates’ online networking profiles on recruiters’ perceptions and ratings of their likelihood of inviting the candidate for a job interview. Specifically, this study used a status generalization theory perspective to examine the weighting of information related to candidate physical attractiveness, gender, and qualification to predict perceived expectations for intellectual competence, likability, and social skills. These expectations then predicted whether the candidate should be recommended for a job interview. While participants relied almost exclusively on qualification information when making judgments of intellectual competence, candidates placed increased weight on attractiveness when rating …

Repercussive Discrimination: Racial Discrimination As An Explanation Of Prevalent Homophobia Among Racial Minorities, Timothy E. Lewis

Dissertations

Generally, attitudes in the United States towards lesbian, gay, bisexual, transgender, and intersex (LGBTI) persons have become more favorable in recent years. Obviously, examining the politics of LGBTI persons and attitudes towards them is important considering that this demographic may account for 10% of the U.S. population; but a more inconspicuous reason it that examinations provide insight into the political landscape of how political minorities address various issues and interests. However, in studying public opinion towards gays and lesbians it is discovered that racial minorities, particularly African-Americans, generally possess negative attitudes to LGBTI persons and possess higher percentages of homophobic …

Experiences Of Former Participants In Teen Advocates For Sexual Health (Tash), Celeste Nicholas

Dissertations

This qualitative study explores the experiences of former participants in a Planned Parenthood youth development and sex education program, Teen Advocates for Sexual Health (TASH). Phenomenologically-based interviews centered the question, “What did it mean to participate in TASH?” Chapter 1 introduces the study context and synthesizes foundational literature from the fields of sex education, public health, critical pedagogy, civic engagement, youth development, and youth organizing. Chapters 2-4 each contain complete manuscripts, representing three complementary analytic approaches to a common data set and inviting multiple audiences. Chapter 2 addresses sex educators in describing TASH’s “rights-based” sex education model. Research questions included: …

Development And Evaluation Of Machine Learning Algorithms For Biomedical Applications, Turki Talal Turki

Dissertations

Gene network inference and drug response prediction are two important problems in computational biomedicine. The former helps scientists better understand the functional elements and regulatory circuits of cells. The latter helps a physician gain full understanding of the effective treatment on patients. Both problems have been widely studied, though current solutions are far from perfect. More research is needed to improve the accuracy of existing approaches.

This dissertation develops machine learning and data mining algorithms, and applies these algorithms to solve the two important biomedical problems. Specifically, to tackle the gene network inference problem, the dissertation proposes (i) new techniques …

Big Data Analytics In Computational Biology And Bioinformatics, Kevin Byron

Dissertations

Big data analytics in computational biology and bioinformatics refers to an array of operations including biological pattern discovery, classification, prediction, inference, clustering as well as data mining in the cloud, among others. This dissertation addresses big data analytics by investigating two important operations, namely pattern discovery and network inference.

The dissertation starts by focusing on biological pattern discovery at a genomic scale. Research reveals that the secondary structure in non-coding RNA (ncRNA) is more conserved during evolution than its primary nucleotide sequence. Using a covariance model approach, the stems and loops of an ncRNA secondary structure are represented as a …

Protein Engineering Of Cota Laccase By Using Bacillus Subtilis Spore Display, Silu Sheng

Dissertations

Spore display offers advantages over more commonly utilized microbe cell-surface display systems. For instance, protein-folding problems associated with the expressed recombinant polypeptide crossing membranes are avoided. Hence, a different region of protein space can be explored that previously was not accessible. In addition, spores tolerate many physical/chemical extremes. The aim is to improve pH stability using spore display. The maximum activity of CotA is between pH 4 and 5 for the substrate ABTS (ABTS = diammonium 2, 2’-azino-bis(3-ethylbenzothiazoline-6-sulfonate)). However, the activity dramatically decreases at pH 4. The activity is not significantly altered at pH 5. CotA is used as a …

Synthesis And Detection Of Dna Damage, Xun Gao

Dissertations

The biological effects of DNA alkyl adducts are difficult to evaluate at the cellular level due to their instability. Synthesis of oligonucleotides that contain a single N7-alkylguanine has become a vital tool to achieve the above goal. However, the instability of N7-alkyguanines is not compatible with the phosphoramidite chemistry used by solid-phase oligonucleotide synthesis either. Development of chemically stable analogues of unstable DNA lesions enables accurate study of polymerase bypass. The design and successful synthesis of N7-hydroxyethyl-9-deaza-2′-deoxyguanosine and N7-oxoethyl-9-deaza-2′-deoxyguanosine as the stable analogues of N7-hydroxyethyl- 2'-deoxyguanosine and N7-oxoethyl-2′-deoxyguanosine, respectively, are reported. The synthesis of these two nucleosides whose N7 side …

Qualitative Modeling Of Chaotic Logical Circuits And Walking Droplets: A Dynamical Systems Approach, Aminur Rahman

Dissertations

Logical circuits and wave-particle duality have been studied for most of the 20th century. During the current century scientists have been thinking differently about these well-studied systems. Specifically, there has been great interest in chaotic logical circuits and hydrodynamic quantum analogs.

Traditional logical circuits are designed with minimal uncertainty. While this is straightforward to achieve with electronic logic, other logic families such as fluidic, chemical, and biological, naturally exhibit uncertainties due to their inherent nonlinearity. In recent years, engineers have been designing electronic logical systems via chaotic circuits. While traditional boolean circuits have easily determined outputs, which renders dynamical models …

Investigation Of New Learning Methods For Visual Recognition, Qingfeng Liu

Dissertations

Visual recognition is one of the most difficult and prevailing problems in computer vision and pattern recognition due to the challenges in understanding the semantics and contents of digital images. Two major components of a visual recognition system are discriminatory feature representation and efficient and accurate pattern classification. This dissertation therefore focuses on developing new learning methods for visual recognition.

Based on the conventional sparse representation, which shows its robustness for visual recognition problems, a series of new methods is proposed. Specifically, first, a new locally linear K nearest neighbor method, or LLK method, is presented. The LLK method derives …

Statistical Learning Methods For Mining Marketing And Biological Data, Jie Zhang

Dissertations

Nowadays, the value of data has been broadly recognized and emphasized. More and more decisions are made based on data and analysis rather than solely on experience and intuition. With the fast development of networking, data storage, and data collection capacity, data have increased dramatically in industry, science and engineering domains, which brings both great opportunities and challenges. To take advantage of the data flood, new computational methods are in demand to process, analyze and understand these datasets.

This dissertation focuses on the development of statistical learning methods for online advertising and bioinformatics to model real world data with temporal …

The Goal-Driven, Resilient, And Influential Teens Program In Kentucky High Schools: The Impact On Social And Emotional Learning And Influencing Factors, Brant Von Goble

Dissertations

In order to assess the effects of the Goal-driven, Resilient, and Influential Teens (GRIT) program on social and emotional learning and academic performance in high schools throughout Kentucky, data from several sources were compiled and analyzed. These sources included results from the Student Engagement and Performance (STEP) survey, an instrument developed by the Rock Solid Evaluation Team at Western Kentucky University and administered yearly to high school students and teachers, and school-level academic and socioeconomic data from the Kentucky Department of Education. Additional data on fidelity of GRIT program implementation were obtained from FranklinCovey, the GRIT program’s developer and publisher. …

Factors That Influence Physicians To Assume Leadership Roles: A Focus On Clinical Integration, Jennifer Lynne Jackson

Dissertations

The Patient Protection and Affordable Care Act of 2010 (PPACA) drastically altered the healthcare industry in the United States. Along with multiple other directives, the PPACA mandated that physicians and hospitals work together in strategies known as clinical integration. For effective clinical integration to be achieved, interdependence among physicians and hospitals is required to provide the highest quality outcomes for patients at the best possible value. To this end, healthcare leaders have identified that the key to establishing successful clinical integration is the presence and commitment of physician leaders (Penlington & Marshall, 2016).

This study explores factors that influenced a …

The Effect Of A Growth Mindset On Student Achievement Among Students With A Disability, Kristin Line Froedge

Dissertations

The purpose of this study was to investigate to what extent the mindset of students with disabilities relates to their Student Growth Percentile (SGP) on the K-PREP in both reading and math. In addition to exploring the influence of student mindset on academic growth, the study also examined if a correlation exists between teacher mindsets and mindsets of their students. This quantitative study utilized 2015 K-PREP assessment data from the Kentucky Department of Education and a mindset survey developed by the researcher. Participants for this study included 145 middle school students with disabilities and 46 middle school teachers from six …

From Descendants Of Refugees To First-Generation College Students: The Untold Story Of Southeast Asian American College Students’ Lived Experience, Vunsin Hiew Doubblestein

Dissertations

Aggregate data on Asian Pacific Americans (APAs) may show APAs to have exceptionally high educational attainment and economic mobility compared to other racial groups (Museus & Buenavista, 2016). In reality, various APA sub-groups face significant obstacles to academic access and success and are found at both the highest and lowest levels of the achievement, as well as educational attainment and income spectrums. In spite of the growing awareness of and scholarship on the complexity of APA student experience in higher education, there is limited research on Southeast Asian Americans (SEAAs) who have come to the U.S. as refugees, the circumstances …

Impact Of Post-Secondary Correctional Education On Self-Efficacy And Personal Agency Of Formerly Incarcerated African American Men, David E. Jones

Dissertations

This study explored the impact of post-secondary correctional education (PSCE) on those released from prison, with special attention paid to individuals’ sense of self-efficacy and personal agency. A review of the literature indicates the vast majority of people who enter prison will one day return to society. These returning citizens face a number of hurdles as they work to reconstruct life outside of prison and avoid recidivism. Prior research suggests education is positively correlated with successful reentry into society. Unfortunately, there are few opportunities to pursue education past the secondary level in prison, which limits access to the corollary benefits …

Disenfranchised Grief And The Substance Abuse Counselor: A Heuristic Inquiry, Melissa Pettit

Dissertations

Grief and loss are a part of the substance abuse counselor experience. The purpose of this study was to generate a heuristic inquiry on how substance abuse counselors experience and manage disenfranchised grief in their work with the substance abuse population. A review of the literature indicated health care professionals experience disenfranchised grief. The experiences of disenfranchised grief was noted in relation to substance abuse counselors, who experience ongoing, client-related losses in the workplace. The researcher interviewed 10 Substance Abuse Counselors and asked the research questions, "How do you experience loss in your work as a substance abuse counselor?" and …