Digital Commons Network^™

Supporting User Interaction And Social Relationship Formation In A Collaborative Online Shopping Context, Yu Xu

Dissertations

The combination of online shopping and social media allow people with similar shopping interests and experiences to share, comment, and discuss about shopping from anywhere and at any time, which also leads to the emergence of online shopping communities. Today, more people turn to online platforms to share their opinions about products, solicit various opinions from their friends, family members, and other customers, and have fun through interactions with others with similar interests. This dissertation explores how collaborative online shopping presents itself as a context and platform for users' interpersonal interactions and social relationship formation through a series of studies. …

Modeling Mass Transfer And Chemical Reaction In Industrial Nitrocellulose Manufacturing Processes, Francis Patrick Sullivan

Dissertations

A series of models are proposed to describe the production of military grade nitrocellulose from dense cellulose materials in mixtures of nitric acid, sulfuric acid, and water. This effort is conducted to provide a predictive capability for analyzing the rate and extent of reaction achieved under a range of reaction conditions used in the industrial nitrocellulose manufacturing process for sheeted cellulose materials. Because this capability does not presently exist, nitrocellulose producers have historically relied on a very narrow range of cellulose raw materials and resorted to trial and error methods to develop processing conditions for new materials. This tool enables …

Semantic, Integrated Keyword Search Over Structured And Loosely Structured Databases, Xinge Lu

Dissertations

Keyword search has been seen in recent years as an attractive way for querying data with some form of structure. Indeed, it allows simple users to extract information from databases without mastering a complex structured query language and without having knowledge of the schema of the data. It also allows for integrated search of heterogeneous data sources. However, as keyword queries are ambiguous and not expressive enough, keyword search cannot scale satisfactorily on big datasets and the answers are, in general, of low accuracy. Therefore, flat keyword search alone cannot efficiently return high quality results on large data with structure. …

Addressing Ad-Blocking Challenges In Online Publishing: A Data Science Approach, Shuai Zhao

Dissertations

The revenue of online display advertising is expected to reach 389 billion U.S. dollars globally in 2021. However, the fast increase in ad-blocker usage impacts publishers' ad revenue and the ad-supported free web. Faced with this problem, many online publishers choose either to cooperate with ad-blocker software companies to show acceptable ads or to build a wall that requires users to whitelist (i.e., turn off ad-blockers) for content access. This dissertation aims to deepen the understanding of existing counter-ad-blocking strategies and further explore how to address ad-blocking challenges through a data science approach.

The dissertation starts with investigating and identifying …

Mental Health And The High-Performing Student: A Study Of Stressors And Effective Supports For High-Achieving High School Students, Jodi Boyle

Dissertations

Purpose: The purpose of this qualitative phenomenological study was to explore the lived experiences of high-achieving 11th- and 12th-grade high school students participating in International Baccalaureate (IB), Advanced Placement (AP), or Honors courses. An additional purpose of this study was to identify the academic and social stressors experienced by students and the coping strategies used to overcome them.

Methodology: This study used a phenomenological research design to describe the lived experiences, academic and social stressors, and coping strategies of high-achieving students. For this study, in-depth interviews were conducted to understand the academic and social experiences of students participating in …

Response Of Deep Aquifers To Climate Variability, Karem Fathy Abdelgaber Abdelmohsen

Dissertations

Our recent analysis of Temporal Gravity Recovery and Climate Experiment (GRACE) solutions over the largest aquifer system in Africa (the Nubian Sandstone Aquifer System: NSAS) revealed that while the response of deep aquifers to climatic variations remains a relatively slow process that takes thousands to tens of thousands of years, there is a much faster response in aquifers that are characterized by dense networks of faults, fractures and karst as is the case with the NSAS. This rapid groundwater flow, when it occurs, is detected as an increase in GRACE_TWS over areas downgradient and distant (hundreds of km) from …

Exploring The Relationships Between And Among Registered Nurses' Spiritual Well-Being, Spiritual Care Perspectives, And Their Provision Of Spiritual Care In Acute Care Settings, Barbara J. Kitchener

Dissertations

Despite acknowledgment that spiritual care is an essential aspect of holistic nursing care, nurses often feel ill-prepared for, uncomfortable with, and uncertain about providing spiritual care. Studies have indicated that nurses who have a strong sense of their own spiritual well-being and/or a positive perspective [attitude, value, belief] about spiritual care are more inclined to provide spiritual care to their patients. However there is a scarcity of such studies among acute care nurses. This descriptive correlational study aimed to explore relationships between and among acute care nurses' spiritual well-being (SWB), spiritual care perspectives (SCP), and their provision of spiritual care …

Leadership Behaviors Needed By Executive Directors Of Nonprofit Victim Support Organizations, Timothy Hunt

Dissertations

Purpose: The purpose of this mixed methods study was to determine how nonprofit victim support organization leaders rate the impact of the 10 Transformational Leadership Skills Inventory (TLSi) domains on their effectiveness. In addition, it was the purpose to discover how nonprofit victim support organization leaders describe the impact of each TLSi domain on their effectiveness.

Methodology: The participants in this study were executive directors of private, nonprofit victim support organizations across the Pacific Northwest region of Washington, Oregon, and Idaho. All participated in an online quantitative survey where they rated their agreement with statements about the impact of the …

An Examination Of Indicators Regarding Student Choice In Social Media Marketing And Platforms Of Higher Education Institutions In Missouri, Emmy J. Zimmerman

Dissertations

The purpose of this study is to investigate relationships between social media marketing, social media platforms, and student choice of higher education institutions. Through evaluating current research, this study addresses potential changes needed to ensure colleges’ and universities’ marketing and admissions teams are using social media in ways that increase return on investment (ROI) and attract students to institutions. Previous research exposed social media marketing as a relatively untested method of reach for students’ college choice; therefore, the study will be original in nature. Previous studies provided data from an admissions counselor’s perspective, notably, a study by Barnes and Jacobsen …

Al-Baghdadi And The Art Of Terrorist Persuasion, Bandar Dawshi

Dissertations

This dissertation examines the rhetoric used by ISIS leader Abu Bakr al-Baghdadi to persuade thousands of young Muslims around the world to join the organization and defend it until the end. The dissertation concerns the innovative methods used by the organization to reach thousands of young people around the world, and the role of misinterpretations of the Qur'an in supporting al-Baghdadi's rhetorical arguments. In order to provide a reasonable explanation for these speeches, the dissertation used Aristotle's rhetorical methodology, Gamal Abdel Nasser's rhetorical concept, Burke's concept of identity and social identity theory. The arguments focused on studying rhetoric within the …

Linking Police Attitude To Behavior In Interactions With Mentally Ill Consumers, Raymond Wooten

Dissertations

In this project, the author aimed to examine law enforcement officer attitude and behavior toward individuals with serious mental illness. There were two distinct sections of this project; one quantitative and one qualitative. For the quantitative portion, one hundred fifty four (N = 154) officers completed an online questionnaire providing information on their attitude toward individuals with serious mental illness in a variety of contexts. The questionnaire also generated information regarding officers’ general knowledge of mental illness, their level of contact with individuals with mental illness, and their desired social distance from individuals with mental illness. In the qualitative portion, …

A Library Of Low Molecular Weight Fluorescent Probes For The Detection Of Cu(Ii) And Fe(Iii) Ions, Ashley Johnson

Dissertations

This dissertation reports the synthesis and photophysical properties of a family of rhodamine dyes (compounds 3.9-3.13 and 4.6). The rhodamine dyes are prepared in two steps, and fully characterized by ESI-MS (Low and High resolution), X-Ray crystallography, NMR spectroscopy, and FT-IR spectroscopy. The coordination environment of the low molecular weight fluorescent probes (LMFPs) was systematically changed to investigate the thermodynamic behavior between the LMFPs and an array of metal ions (Cu²⁺, Fe²⁺, and Hg²⁺ ions) in protic and aprotic solvent systems. Upon coordinating to metal ions, the π-conjugation of the LMFPs changed, resulting in …

Diversity And Inclusion: Examining The Lived Experiences Of Lgbtq Students At Historically Black Colleges And Universities (Hbcus) In The Bible Belt, Steven Jones

Dissertations

Throughout the twentieth century, the Gay Rights Movement has gained momentum as LGBTQ (Lesbian, Gay, Bisexual, Transgender, Queer) individuals have fought for civil equality and social acceptance. However, Historically Black Colleges and Universities (HBCUs) have been slow to adapt, implement, and effect change that improves the quality of education for LGBTQ students. Strong religious beliefs derived from the church; especially in the South, may be the connection to understanding why homosexuality isn’t vastly accepted or celebrated in the Black Community and at HBCUs; particularly, in the Bible Belt.

Thus, this phenomenological qualitative study, guided by the theory of care framework, …

Well-Being Indicators, Social Globalization, And Unaccompanied Child Migration From Central America, Lucia Farriss

Dissertations

This research investigates the effect of well-being indictors and social globalization on the migration of Unaccompanied Alien Children (UAC) from Central America. The purpose of this study is to determine whether the surge in UAC that began in 2014 at the United States southern border is driven primarily by violence, or whether other factors are at play. Using data for the period 2008-2018, the apprehension of UAC serves as a proxy for measuring unaccompanied child migration to the United States. The four countries of focus are El Salvador, Guatemala, Honduras, and Mexico as they contribute the largest numbers of child …

Childbirth And Control Behind Bars: A Descriptive Qualitative Analysis Of The Maternal Perception Of Control In Women Who Have Given Birth While Incarcerated, Lorin Raines

Dissertations

The perception of control during childbirth has been widely studied in various setting and groups. Many factors have been found to aid or impede the perception of control for birthing women. Significance of that perception of control during childbirth has also been measured in past studies. This descriptive qualitative study advances the knowledge of the perception of control during childbirth and examines a population that has thus far been excluded. Four previously incarcerated women participated in semi-structured interviews about their experience of giving birth while incarcerated and their perception of control during that time. The women were from diverse backgrounds …

Career And Technical Education Teachers’ Attitudes Toward And Their Participation In Technology-Based Professional Development Training In Mississippi’S High School Districts, Natalie N. Hill

Dissertations

The use of technology has become an essential part of daily interaction in Career and Technical education learning environments. There is very little research regarding career and technical teachers’ attitudes and participation in professional development, although previous studies have been conducted referencing K-12 teachers’ attitudes. A qualitative research methodology was employed to investigated the insight of CTE teachers’ attitudes toward the professional developments that they had attended. This study also investigated whether training was appropriate to teachers’ learning needs in high school districts in MS. The population for this study included seven high school career and technical teachers in five …

Public Relations Education In Mississippi Today: Perceptions And Realities, Gail Brown

Dissertations

This two-component study assessed public relations educators’ (n=18) and public relations practitioners’ (n=53) perceptions and realities of public relations education in Mississippi today. A Qualtrics-designed survey ascertained the quantitative data for Study I (N=71). The researcher used telephone and email interviews to gather qualitative data from a convenience sample (N=10) of five public relations practitioners and five public relations educators for Study II. The dual study used education recommendations from the Commission on Public Relations Education (CPRE) 2017 Report, Fast Forward: Foundations and Future State. Educators and Practitioners, as assessment variables.

The survey was distributed to the Public Relations Association …

Development Of Functional Materials And Devices On Flexible Platforms Using Additive Print Manufacturing Processes For Biomedical And Environmental Applications, Dinesh Maddipatla

Dissertations

In recent years, considerable research has been vested into the development of printed electronics (PE) to explore the best ways of fabricating electronic devices on flexible platforms using additive print manufacturing processes. PE produces flexible devices that are compatible with complex geometries, foldable applications and conformal to curved surfaces, with a promising potential for large‐area device fabrication at relatively lower manufacturing costs. This dissertation focuses majorly on the design and fabrication of novel flexible functional materials and devices for biomedical and environmental applications using additive printing processes.

Initially, a simple paper-based low cost and rapid prototypable platform with oxygen sensors …

Exploring The Relationship Between Student Online Discussion-Board Activity And Student Grades, Frank Robert Talbott

Dissertations

As students, instructors, and higher-education administrators delve further into cyberspace, scholarly literature and practice require further insights into the dynamics of online learning. This study examined the relationship between online student discussionboard activity and student grades and, consequently, addressed a dearth in the literature about this relationship. Student Involvement Theory provided the theoretical foundation of this research. This study’s sample consisted of 200 online undergraduate students in online business-analytics courses. Regression-analyses findings supported the relationship between student postings of certain mathematical-symbol references (e.g., for equalities, inequalities, addition, subtraction, multiplication, and division) and student grades. Therefore, administrators, faculty, and course designers …

Military Life Narratives And Identity Development Among Black Post-9/11 Veterans, Deon Marcell Hall

Dissertations

The purpose of this study was to examine the phenomenological experience of veteran identity development in post-9/11 veterans who identify within the Black diaspora. Given that current research suggests that behavioral health providers lack the sufficient training necessary to meet the unique clinical needs of post-9/11 veterans, this study aimed to examine military culture and experience in the context of intersecting cultural identities so as to more effectively frame the services offered by counseling psychologists working with Black military veterans and service members. More specifically, this study strengthens the existing empirical framework for addressing the behavioral health needs of post-9/11 …

Cuban Immigrants’ Experience With Acculturation And How They Cope In The United States, Lourdes Araujo

Dissertations

Objective: This research examines how Cuban immigrants experience cope and adapt to the United States. Cuban immigration is associated with specific stressors related to the immigration experience and the necessary process of acculturation and assimilation. These major stressors can result in mental health concerns among Cuban immigrants; however, no studies have examined how acculturation may influence Cuban immigrants’ coping skills and resultant mental health concerns. This unique study is the first to examine the coping skills Cuban immigrants use during acculturation and the effects of these skills on Cuban immigrants’ mental health. Methods: Seventeen participants completed a semistructured interview and …

Disordered Eating Among Nonbinary Individuals, Marilyn Chung

Dissertations

Research on influences of eating disorders have informed diagnosis and treatment of eating disorders, particularly for White cisgender women. A Perfect Biopsychosocial Storm is a theory of influences of disordered eating development: sociocultural influences of rigid body shape and size ideals, high rates of trauma and violence, experiences of objectification and sexualization, and biological changes (Maine & Bunnell, 2010). For transgender individuals, recent findings suggest disparities and negative mental health outcomes such as elevated prevalence of disordered eating, body image concerns, and self-reported disordered eating. For transgender men and women, researchers found that disordered eating may be related to attempts …

Are They Ready? Implementing 21st-Century Learning Skills Integration Into Indonesia Science Instruction, Esty Haryani

Dissertations

Science and technology education are essential subjects for achieving the desired workforce skills for the 21st century (Bybee & Fuchs, 2006). In 2017, Indonesia adopted the 21st century learning and innovation framework into its national curriculum to address the demand to improve students’ readiness for the complexity of the future whether for the work environment or in their personal lives. This learning and innovation skills framework focuses on the development the skills of creativity and innovation, critical thinking and problem solving, collaboration, and communication, known as the 4Cs. However, there is little knowledge on the integration of these skills into …

Getting Online With Generation Z: Learning Approaches, Letha Marie Mellman

Dissertations

This e-Delphi study explored learning approaches, as defined by Generation Z (Gen Z) learners, in online academic settings and nonacademic settings. It also considered differences between the two panels (38 participants in each panel, representing 39 states) of learners (Academic and Nonacademic) and compared current literature-supported best practices to the learning approaches generated by participants in this study. The Academic panel participants reached consensus on six of the 56 learning approaches: (a) completing course material; (b) rely on self; (c) projects that I can choose what to do and learn material by myself; (d) search Internet; (e) ask expert; and …

Rural Cochlear Implant Services: Reflections From Parents And (Re)Habilitation Professionals, Natalie J. Austin

Dissertations

Austin, Natalie J. Rural cochlear implant services: Reflections from parents and (re)habilitation professionals. Published Doctor of Philosophy dissertation, University of Northern Colorado, 2020. The idea of what “rural” means and the influence of this setting is very complex. The impact on the resources and services available to the family, school district, and community goes beyond geographic barriers. Despite there being known problems with service provision for children with hearing loss in rural areas, little is being done to improve the support offered to families and professionals working to meet the needs of children who have cochlear implants. The purpose of …

Three In One: The Style, Structure, And Sound Of Thad Jones As A Jazz Trumpeter, Shawn Edward Williams

Dissertations

Thad Jones’s role as a big-band composer, arranger and leader of the famed Thad Jones/Mel Lewis Orchestra formed the basis for his international reputation in the jazz world. However, it can be demonstrated that Jones’s improvisational style as a jazz trumpet soloist directly informed his composition and arranging style. Long before Jones became an active composer and arranger, he spent decades performing as a soloist with various small groups. Jones spent his formative years in Pontiac, Michigan playing with the Arcadia Club Band, a family band formed by his uncle, where he worked alongside his brother Hank Jones. Jones continued …

The Mathematics Made Possible To Learn During Instruction On Exponential Functions, Alees Teel Lee

Dissertations

Exponential functions are an integral component of the secondary mathematics curriculum with which students struggle. Inherent difficulties students have had around the topic of exponential functions suggested a need for thinking about and examining the teaching and learning related to this content. This study presented the mathematical ideas made possible to learn during instruction related to exponential functions in two College Algebra courses offered at the high school level. Using the variation theory of learning (VTL) as an analytic lens along with thematic analysis, instructional themes, purposes, overarching ideas, and sub-ideas were identified within and compared across two teachers. The …

Perceived Servant Leadership Behaviors And Employee Outcomes In National Collegiate Athletic Association Division Iii, Athletics Departments The Moderating Role Of Trust-In-Leader And Organizational Tenure, Sean Fletcher Daly

Dissertations

ESPN reported that in the 2016–2017 academic year, the National Collegiate Athletic Association (NCAA) surpassed $1 billion in revenue (Rovell, 2018). Trends in revenue and business models have caused scholars, educators, and professionals to call for a reform of how collegiate sport organizations are led (Lapchick et al., 2013; Lopiano & Gurney, 2014). Some believe servant leadership (Greenleaf, 1977) is the answer (Burton & Peachey, 2013; Dodd et al., 2018). Research studies on servant leadership in the sporting context have found it has a positive impact on the development of an ethical climate (Achen et al., 2019; Burton et al., …

Schools’ Civil Rights Obligations To English Learners: Leadership Perceptions On Key Issues, Pamela R. Schwallier

Dissertations

English Learners (ELs), who now represent nearly 10% of all K-12 public school students, 4.8 million of who speak over 400 different languages and dialects, continue to lack equitable educational opportunities as demonstrated through gaps in achievement outcomes, poor graduation rates, and identified systemic barriers related to the intersectionality of language, culture, race, and racism (Crump, 2014; DeMatthews & Izquierdo, 2017; Menken & Solorza, 2015; Morita-Mullaney, 2018; National Clearinghouse for English Language Acquisition [NCELA], 2015, 2018). This quantitative study captured over 800 K-12 educational leaders’ perspectives, via an anonymous electronic survey, on key issues regarding equitable programs for ELs that …

Teacher Perceptions Regarding The Purpose Of K-12 Education, Peter M. Grostic

Dissertations

This study explored the perceptions of teachers regarding the purposes of K-12 education and the influence of belief sources on their perceptions. Purposes of K-12 education and the ways in which they have changed over time are topics for which researchers are concerned (Carpenter, 2005; Labaree, 2013). Addressing this concern, there is existing literature focused on understanding purposes through K-12 school mission statements (Schafft & Biddle, 2014; Stemler & Bebell, 2012), and a multitude of reflections regarding what K-12 education purposes should be (Biesta, 2015; Macallister, 2016; Robinson & Aronica, 2014). Less is known regarding what frontline K-12 education practitioners …