Digital Commons Network^™

Overcoming Conventional Modeling Limitations Using Image- Driven Lattice-Boltzmann Method Simulations For Biophysical Applications, Olufemi E. Kadri

Dissertations

The challenges involved in modeling biological systems are significant and push the boundaries of conventional modeling. This is because biological systems are distinctly complex, and their emergent properties are results of the interplay of numerous components/processes. Unfortunately, conventional modeling approaches are often limited by their inability to capture all these complexities. By using in vivo data derived from biomedical imaging, image-based modeling is able to overcome this limitation.

In this work, a combination of imaging data with the Lattice-Boltzmann Method for computational fluid dynamics (CFD) is applied to tissue engineering and thrombogenesis. Using this approach, some of the unanswered questions …

Perceptions Of Teachers Regarding Development Of Positive Student-Teacher Relationships In Exemplar Schools Using Cstps, Sneha Sharma

Dissertations

Purpose: The purpose of this phenomenological, qualitative study was to describe and explore how teachers in Partnership for 21st Century Learning (P21) exemplar schools developed positive student-teacher relationships using the 6 domains of the California Standards of the Teaching Profession (CSTPs).

Methodology: This study included 12 teachers from 2 high schools in California that were recognized as exemplary by P21. Each school principal chose 6 teachers by utilizing a list of specific criteria, based on the CSTPs, that was provided by the researcher. The researcher also conducted interviews of all 12 teachers, completed artifact analysis, and conducted observations of teachers. …

A Mobile Phone Hiv Medication Adherence Intervention: Care4today Mobile Health Manager, C. Andrew Martin

Dissertations

This paper presents the findings of a qualitative study designed to describe the experience of HIV medication adherence using a mobile phone application. For the purpose of this qualitative study, nine semi-structured focus group discussions were conducted over a three-month period at an AIDS service organization in Central Texas. The data were analyzed following the principles of thematic analysis.

Adolescent Female Substance Abuse: Risk And Resiliency Factors, Mary Bemker

Dissertations

Alcohol, tobacco, and other drug (ATOD) abuse is a major social and health concern for adolescent females. For the first time, female use patterns are converging with male patterns among U.S. adolescents. Despite evidence that gender differences could be associated with ATOD origin and precipitating factors, little attention has been directed to female adolescents and ATOD use. Therefore, the purpose of this investigation was to explore the experiences of adolescent females in relation to ATOD risk and resiliency factors present in their lives. This investigation used the Neuman systems model as its theoretical framework. Grounded theory methodology was employed to …

Systematics Of Malesian-Pacific Piper (Piperaceae), Rani Asmarayani

Dissertations

Comprised of ~2400 spp., Piper is a major clade in the magnoliid angiosperms. Three major groups are recognized in Piper, i.e., the Neotropical, Asian and South Pacific. Unlike Neotropical Piper,relationships in the Paleotropical Piper remain enigmatic. This study focused on the Paleotropical Piperwith emphasize on the Malesian-Pacific Piper, Malesia being the center of diversity of the genus in the Paleotropics. The goals are to evaluate relationships within Paleotropical Piper (chapter 1), to evaluate characters, morphological (chapter 1) and stem anatomical (chapter 2), that may distinguish clades, and to investigate the species boundaries focusing on the well-supported …

Merger And Acquisition Integration: Exploring Uncertainty From The Perspective Of The Middle Manager, Joseph J. Pazmany

Dissertations

Purpose. The purpose of this qualitative study was to explore middle managers’ perceptions about how organizations managed job-related, structural, and strategic uncertainty during a merger and acquisition (M&A) integration process. Furthermore, this research investigated what strategies middle managers perceived effective and ineffective for managing uncertainty and recommendations for managing uncertainty during future integrations.

Methodology. This qualitative study utilized a phenomenological research design that collected data through open-ended interviews. Fifteen middle managers participated in the study and were asked 12 questions that explored their perceptions about managing uncertainty during an M&A integration.

Findings. Overall, participants perceived strategic uncertainty …

The Dynamical State Of A Young Stellar Cluster, Timothy Sullivan

Dissertations

The dynamical state of the young star-forming cluster Rho Ophiuchi is considered, with emphasis on the L1688 cloud. Radial velocities are derived for 32 YSOs, with some being multi-epoch, using Markov-Chain Monte Carlo routines based upon the package emcee. Sources are chosen based upon their spectral index to focus on the earlier stages of star formation, in this case, Class I and Flat spectrum objects, and compared with a sample of Class II and III objects from the same embedded cluster. It is found that the radial velocity dispersion for these younger objects is ∆v = 2.8 ± 0.6 km …

Developing Social And Emotional Skills In Early Childhood Instruction: A Delphi Study, Tess Breen

Dissertations

Purpose: The purpose of this Delphi study was to explore social and emotional learning in early childhood instruction with an emphasis on identifying the methods expert early childhood teachers use to support and promote the development of empathy and emotion regulation, to have the teachers rate the impact of these methods, and to identify the specific activities used to implement the six most highly rated methods.

Methodology: This study utilized the Delphi method which is an iterative process used to collect and distill the judgments of experts using a series of questionnaires interspersed with feedback. Fourteen participants recommended strategies to …

Preparation Matters: A Quantitative Examination Of Faculty Active Shooter Preparedness, Latisha Pitts

Dissertations

In recent years, the occurrence of active shooter incidents has become more prevalent within the United States. Since the Virginia Tech massacre in 2007, there has been an increase in active shooter incidents at institutions of higher learning (IHLs). Educational settings have been identified by the FBI as the second most common place for active shooter incidents to occur. As a result, there has become an increased need for administrators at IHLs to create and maintain cultures of preparedness that include effective active shooter training. In this research study, Albert Bandura’s Social Cognitive Theory was used as a framework to …

Mechanism For Leadership Development And Effectiveness: The Relationship Between Followership, Leadership, And Psychological Capital, Saurabh Gupta

Dissertations

Research supports the strategic role of a leader in improving individual and organizational performance (Day et al., 2009; Kaiser & Curphy, 2013). Developing leadership and enhancing leadership effectiveness remains at the forefront of organizational strategic plans (Day et al., 2009; Kaiser & Curphy, 2013). However, a majority of leadership development efforts fail in their purpose, which causes a leadership crisis in many organizations (Fernández-Aráoz, Roscoe, & Aramaki, 2017; Gurdjian, Halbeisen, & Lane, 2014; Kaiser & Curphy, 2013; Madanchian, Hussein, Noordin, & Taherdoost, 2017; Pfeffer, 2015; Wakefield, Abbatiello, Agarwal, Pastakia, & van Berkel, 2016). Neglecting the role of followership and using …

A New Generation Of Functional Polyisobutylenes For Advanced Applications, Corey M. Parada

Dissertations

Polyisobutylene (PIB) is a fully saturated, aliphatic polymer of high commercial importance due to its superior gas barrier properties and high chemical/oxidative stability. One commercial end-use for PIB is in insulated glass windows (IGU), where it acts as a gas/moisture barrier and sealant. Under certain adverse conditions, catastrophic failure of the PIB sealant may result in aesthetic and functional failure of the IGU, which necessitates replacement of the unit. Thus, there exists a need to improve current generations of thermoplastic PIB sealants to be able to withstand the harsh environments found in current real-world applications.

In the first project, we …

Polyhedral Oligomeric Silsesquioxane-Phosphate Glass Matrix Nanocomposites With Additional Chapter On Phosphate Glass-Poly(Ethylene Terephthalate) Matrix Composites, Kyoungtae Kim

Dissertations

Preparation and characterization of tin fluorophosphate glass (Pglass) matrix nanocomposites incorporating polyhedral oligomeric silsesquioxane (POSS) were investigated on the structural, thermal, morphological, mechanical, and rheological properties. Various processes including synthesis, extrusion and sintering processes were applied to prepare the nanocomposite samples. Another application of POSS with hydrophobic functional groups on the well-structured nanoscale silicate cage with three silanol groups was investigated to present the feasibility to use POSS molecule as a coating material on the surface of the hydrophilic inorganic glass. In addition, Poly(ethylene terephthalate) polymer matrix composites incorporating Pglass was studied to present the benefits of the Pglass with …

Succession Planning For First-Year, P-12 Principals, Brannon Johnson

Dissertations

In order to improve retention of first-year principals, all schools should have a leadership succession plan for first-year, P-12 principals to help improve principal effectiveness and retention (Fink & Brayman, 2006). Russell and Sabina (2014) defined succession planning as the explicit design and implementation of programs to identify and develop high-quality principal candidates. Further, succession planning is about ensuring that the next set of leaders is trained and poised to take on leadership responsibilities when needed (Beaulieu, n. d.).

It is clear that the challenges of being a principal are great, and that this is especially true during the early …

A New Keynesian, Neo-Institutional Synthesis: Connecting And Explaining Under-Evaluated Risks In Consumption, Trade, And Finance, Todd Barry

Dissertations

The overall research questions addressed in this dissertation are twofold. First, what are the largest, under-evaluated (or unorthodox) factors that cause growth volatility in both the short and long terms? Second, how can one best determine how much risk is being taken across both of these periods, and how can states increase and/or diversify their risks? The principle hypotheses are that finicky consumerism and structural economic changes, undiversified trade, and under-financed investment contribute significantly to growth volatility. Above all, risk taking actions and policies in countries cause economies to fluctuate. Further, the dissertation suggests that the short-term risk characteristics of …

Mississippi Teacher's Perspectives Of Danielson's Framework For Teaching, Donna Floyd

Dissertations

The focus of this study was to measure Mississippi teacher’s perspectives as identified in the Teacher’s Perspectives on Danielson’s Framework for Teaching (TPDFT) instrument. This quantitative study investigated whether or not statistically significant differences existed between domains as identified in the TPDFT, and if these findings differed statistically as a function of years of teaching experience, type of Mississippi teaching certification, and degree of professional trust. A 36-item survey instrument based on the 2013 version of Charlotte Danielson’s Framework for Teaching was developed. This survey was piloted and distributed to obtain quantitative data to assess teacher’s perspectives on Danielson’s Framework …

Technique For The Developing Dramatic Soprano, Amber James

Dissertations

This dissertation was inspired by a Facebook post by David L. Jones regarding common pedagogical problems in the dramatic soprano Fach. I am a dramatic soprano, who has dealt with many of the technical problems listed in his post. David L. Jones is an internationally recognized teacher and coach and has worked with some of the most well-known professional dramatic sopranos. After considering these pedagogical challenges, it was decided the best course of action was to interview professional singers, teachers, and coaches in the dramatic soprano Fach. After conducting a state of research, it was found that there …

Diffusion, Adoption, And Network Constraint: Can Understanding Personal Networks Of Afghan Women Improve The Adoption 0f Agricultural Innovations, Clair Wilcox

Dissertations

A plethora of case studies conducted in myriad locations find that factors influencing the adoption of agricultural innovation are different, emphasizing the need for locality specific understanding (Waddingon 2014). The diffusion of agricultural innovations may be influenced by the structure of the social system in which that diffusion is taking place. This study investigates the social structure of rural Afghan women, in an effort to determine how they interact and exchange information, and how the personal network structure, and the nature of the women’s interaction influences adoption of innovations. With the objective of framing rural development programs targeting women in …

Identifying Barriers To Teacher Implementation Of Evidence-Based Practices In Middle-School Reading, Brenda Fortson

Dissertations

This study explores factors that may be related to Mississippi’s 2015 eighth-grade reading scores, which rank the state in 50^th place (Nation’s Report Card, 2016). Whereas there are likely several factors that contribute to middle-school students’ poor performance on the high-stakes tests, this study examines teachers’ reported knowledge and use of evidence-based teaching practices, sense of self-efficacy in implementing the practices, and concerns regarding high-stakes testing and possible relationship with their implementation of the practices.

All public schools in Mississippi were invited to participate in an online survey of sixth-, seventh-, and eighth-grade teachers. After data were screened, 187 …

Refugee Resettlement And Perceptions Of Insecurity: A Comparative Study Of The United States And Canada, Erik Amundson

Dissertations

In the United States and Canada, refugee resettlement has been the subject of extensive scrutiny and political debate, particularly since the November 2015 terrorist attacks carried out by the Islamic State of Iraq and Syria (ISIS) against targets in Paris. While public opinion polls have shown increasingly negative attitudes toward refugees, existing survey questionnaires only provide a limited understanding of what shapes these views. As such, this study focuses on two important factors that influence attitude formation toward refugees, pre-existing levels of knowledge and contact with minority groups. Using a comparative case study approach, this research examines how refugee resettlement …

Characteristics And Motivations Of Mississippi Community College Donors, Fred Young

Dissertations

The purpose of this qualitative research study was to identify characteristics and motivations of Mississippi community college donors. The researcher interviewed the lead administrator in charge of fundraising at 11 of the 15 participating Mississippi community colleges and asked them what they believed were characteristics and motivations of community college donors in Mississippi. The findings of the study suggest that the majority of Mississippi community college donors are white males, over 60 years of age, that live within the community college’s district.

Furthermore, this study revealed that relationships, donor recognition, participation in extracurricular activities, and belief in the community are …

Social Capital In Indian Country: The Effects Of Bridging And Bonding On Job Acquisition, Stephanie Davison

Dissertations

Native Americans living in Indian Country continue to experience poverty due, in part, to a lack of sufficient employment opportunities. Indian reservations, often situated in rural areas, can be difficult to access and complicated land and political issues can make it difficult to attract outside investors. However, as is the case for most people, Native Americans living on or near their respective reservation communities do not necessarily want to leave home to find work. This study examined the social networks of a sample of Native Americans from two tribes in Montana. A social network analysis was conducted to understand how …

A Study Of Acculturative And Linguistic Experiences Of Syrian Refugees In The United States From 2011 – 2018, Amany Habib

Dissertations

Research examining the acculturation and linguistic processes of Syrian refugees resettling in the United States from 2011 – 2018 is limited. In order to learn about the acculturative and linguistic experiences of this unique group of refugees, the current study sought to collect data related to these two experiences within the resettled Syrian refugee population living in the U.S.A. since the start of the Syrian civil war in 2011.

Acquiring the language of a host country is necessary but language-learning experiences vary depending on a number of factors. This research attempted to elucidate the challenges of Syrian refugees in their …

Participation In Winter Guard International As Experienced By Ten Stakeholders: A Phenomenological Study, Jeremy Morgan

Dissertations

The purpose of this phenomenological study was to describe the essence of Winter Guard International (WGI) as lived by ten stakeholders, invested individuals currently serving in leadership roles within the percussion and winds divisions of the WGI organization. Through the lens of a social constructivist theoretical framework, and the use of individual interviews to obtain data, this study considered what participants have experienced and the contexts in which these experiences have taken place. Grounded theory concepts were used initially to clarify the perspective and scope of the study. Analysis of the data involved the identification of significant statements from participant …

Nurse Expectations As Compared To Perceived Reality, Kathryn Mckelvy

Dissertations

Burnout and turnover in nursing have been well documented in nursing literature, but little is known about a nurse’s expectations of the profession compared to their perceived reality of the profession. Do these expectations meet the reality of the workplace, and does this cause the nurse to make a career change? What factors influence a nurse to leave the profession, job-hop, or return to school to further their education? The rate of nurse turnover is an ongoing issue with a lack of research regarding the foundation of nurse expectations compared to the realities of the profession.

The purpose of this …

Factors For Influencing Intervention For Dyslexia, Michele Schraeder

Dissertations

Although instructional leadership and transformational leadership styles of elementary school principals have been found to be effective variables in increasing academic progress for students, the integration of instructional and transformational leadership behaviors has proved to be the most effective form of leadership. However, many students in elementary schools have difficulty learning to read despite good leadership by the principal, with 5-20% of students being diagnosed with dyslexia. While these students need phonetic, multisensory intervention to build necessary reading skills, many principals report lack of knowledge of this specialized instruction. Therefore, the purpose of this research was to explore variables that …

Self-Care Vs. Self-Sacrifice In Medical-Surgical Nursing Culture: A Critical Ethnography, Elise Jordan Juergens

Dissertations

The critical ethnography research examines need prioritization culture among medical-surgical nurses. Grove, Burns, and Gray (2013) define the problem statement as an explicit identification of the research need. Literature search yields scarce ethnographic research on the nursing population as a culture-sharing group, and no qualitative research exists regarding medical-surgical nurses’ self-need prioritization. The purpose of this critical ethnography is to observe medical-surgical nursing culture, related to personal need prioritization, as reflected by behavior and dialogue.

Qualitative research methodology is appropriate where statistical data is not. Research motivation involves seeking insight and sociocultural understanding. Critical ethnography is the chosen qualitative research …

The Baritone To Tenor Transition, John White

Dissertations

Many notable opera singers have been virtuosic tenors; Franco Corelli, Plácido Domingo, James King, José Carreras, Ramón Vinay, Jon Vickers, and Carlo Bergonzi. Besides being great tenors, each of these singers share the fact that they transitioned from baritone to tenor.

Perhaps nothing is more destructive to the confidence of a singer than to have his vocal identity or voice type challenged. Many singers have experienced this, and not always by way of advice or as a gentle suggestion, but rather, as a solution to a fundamental deficiency regarding the singer’s voice. Though undergoing a transition to another vocal fach …

The Challenges And Limitations Of Adapting Mozart's Così Fan Tutte For A Small University Setting, Christopher Lovely

Dissertations

In this dissertation, challenges and limitations related to presenting Così fan tutte within a small university setting are conveyed, as well as offering innovative ideas to create a manageable presentation. I recall my personal experience as Korepititor/Vocal Coach for The University of Southern Mississippi’s 2014 production of Mozart’s Così fan tutte. This document presents topics on the various workings of an opera production: pre-rehearsal preparation, language issues, rehearsal preparation, selection of singers, and production issues. It offers practical solutions to overcome various challenges a small university may encounter. Smaller university opera programs were surveyed regarding their adaptations of …

Tribal Governance In The United States: Adaptation And Change, Michelle Watts

Dissertations

The purpose of this dissertation is to contribute to the body of knowledge on indigenous governance, specifically that of Native Americans and Alaska Natives. This project examined how differing circumstances of Native Nations influence how Native Nations leaders perceive their ability to govern and their relationships with non-indigenous entities. It sought a greater understanding of the cultural adaptations of Native Nations, and how these adaptations influence governance and relationships with state and federal government entities. To gather information, surveys were sent out to all leaders of Native Nations in the United States, according to the Bureau of Indian Affairs (BIA) …

Male Nurse Practitioners' Views On Nursing Education As A Career Option: An Inductive Qualitative Content Analysis, James Mcdavid

Dissertations

As the nursing shortage continues, the demand for new nurses will increase. In 2015, nursing schools in the United States turned away 62,361 qualified applicants in the baccalaureate and graduate nursing programs (Fang, Li, Arietti, & Trautman, 2016). The number of funded, vacant nursing faculty positions increased from 6.9% in 2014 to 7.1% in 2015 (Fang et al., 2016). One idea to help with the nursing faculty shortage is to recruit male RNs into nurse faculty positions. Males count for 10.6% of nurses in the United States (U.S. Bureau of Labor Statistics, 2016). However, men only count for 5.5% of …