Digital Commons Network^™

Describing Images By Semantic Modeling Using Attributes And Tags, Mahdi Mahmoudkalayeh

Electronic Theses and Dissertations

This dissertation addresses the problem of describing images using visual attributes and textual tags, a fundamental task that narrows down the semantic gap between the visual reasoning of humans and machines. Automatic image annotation assigns relevant textual tags to the images. In this dissertation, we propose a query-specific formulation based on Weighted Multi-view Non-negative Matrix Factorization to perform automatic image annotation. Our proposed technique seamlessly adapt to the changes in training data, naturally solves the problem of feature fusion and handles the challenge of the rare tags. Unlike tags, attributes are category-agnostic, hence their combination models an exponential number of …

Dynamic Behavior And Performance Of Different Types Of Multi-Effect Desalination Plants, Mohamed Abdelkareem

Electronic Theses and Dissertations

Water and energy are two of the most vital resources for the socio-economic development and sustenance of humanity on earth. Desalination of seawater has been practiced for some decades and is a well-established means of water supply. However, this process consumes large amounts of energy and the global energy supply is also faced with some challenges. In this research, multi-effect desalination (MED) has been selected due to lower cost, lower operating temperature and efficient in terms of primary energy and electricity consumption compared to other thermal desalination systems. The motivation for this research is to address thermo-economics and dynamic behavior …

Fluctuations In Walking Speeds And Spatiotemporal Gait Parameters When Walking On A Self-Paced Treadmill At Level, Incline, And Decline Slopes, Cesar Castano

Electronic Theses and Dissertations

On a daily basis, humans walk over a variety of terrains. Studies have shown that spatiotemporal gait parameters, such as stride length, stride frequency, stride variability, etc., change when humans walk down a decline and up an incline compared to level ground. However, these studies have been limited to using fixed speed treadmills or analyzing a small number of strides when conducted over ground. Thus, there is a need to investigate the fluctuations in spatiotemporal gait parameters of humans walking at their self-selected speed, which requires recording hundreds of strides. Here we hypothesized that subjects will walk with a slower …

Quality Diversity: Harnessing Evolution To Generate A Diversity Of High-Performing Solutions, Justin Pugh

Electronic Theses and Dissertations

Evolution in nature has designed countless solutions to innumerable interconnected problems, giving birth to the impressive array of complex modern life observed today. Inspired by this success, the practice of evolutionary computation (EC) abstracts evolution artificially as a search operator to find solutions to problems of interest primarily through the adaptive mechanism of survival of the fittest, where stronger candidates are pursued at the expense of weaker ones until a solution of satisfying quality emerges. At the same time, research in open-ended evolution (OEE) draws different lessons from nature, seeking to identify and recreate processes that lead to the type …

Can A Latin-Based Intervention Improve Vocabulary Among Black Early Readers In The Second Grade: An Explanatory Analysis., Zwila Burks Martinez

Electronic Theses and Dissertations

This dissertation investigated whether a relationship between learning a Latin-based intervention in elementary school and improving vocabulary skills among 2nd grade Black students in low-performing schools. Research conducted 100 years ago revealed that the implementation of a Latin-based intervention improved vocabulary and reading skills (Perkins, 1918). In 2008, the results of a national survey revealed that only 15% of public elementary schools offered foreign language instruction, while more than 50% of private schools provided foreign language instruction. By examining a Latin-based intervention, the researcher hoped to identify positive outcomes in improving vocabulary skills for second grade Black students in low-performing …

Classification Of The 4 Stages Of Diabetic Retinopathy Using A Low Complexity Convolutional Neural Network., Zeliha Ogur

Electronic Theses and Dissertations

Diabetic Retinopathy is an eye disease that affects the blood vessels of the retina tissue found in the back of the eye. The blood vessels in the retina discharge fluid or cause hemorrhage when affected by diabetic retinopathy. It leads to loss of eye vision with people with diabetics and also among working adults. The disease may advance in four stages which include Mild nonproliferative, moderate nonproliferative, severe nonproliferative and proliferative diabetic retinopathy. In the mild stage also known as background retinopathy, lumps occur in the blood vessel and distort a little amount of blood. At this stage, you are …

Maximizing Space Utilization In Unit-Load Warehouses., Luis Felipe Cardona Olarte

Electronic Theses and Dissertations

In a unit-load warehouse, products are stored and retrieved in pallet quantities. Examples include retail distribution centers (DC), third-party DCs, and transshipment hubs in freight transportation. Expenses related to space are a significant component of the operational cost of unit-load warehouses; therefore, maximizing space utilization is important. Moreover, the continuing revolution of retail e-commerce is changing the role and design of modern distribution centers (Boysen et al., 2018). An important trend with serious implications for design is the desire of many distributors to locate DCs in or near metropolitan areas in order to support same-day service or better (Thuermer, 2018). …

Representation And Restraint : Cross-National Analysis Of Fractionalization And State-Building., David Lian

Electronic Theses and Dissertations

This study seeks to understand the relationships between democracy, ethnic-linguistic-religious (ELR) fractionalizations and state-building. The speed of a country’s economic recovery from war is used as proxy to determine the state-building process. Using Cox PH model, I conducted a large sample hazard analysis of 107 conflicts, having polity and ELR as explanatory variables. I found that competitiveness of political participation and executive constraints are associated with state-recovery while ethno-linguistic fractionalizations have the reverse effect. I propose that the institutional feedback process is equal to the product of negative executive power centralization and representation minus fractionalization; as in F = – …

Defects In Fetal Mouth Movement And Pharyngeal Patterning Underlie Cleft Palate Caused By Retinoid Deficiency., Regina Friedl

Electronic Theses and Dissertations

Cleft palate is a common birth defect. Etiologic mechanisms of palate cleft include defects in palate morphogenesis, mandibular growth, or spontaneous fetal mouth movement. Cleft palate linked to deficient fetal mouth movement has been demonstrated directly only in a single experimental model of loss of neurotransmission. Here, using retinoid deficient mouse embryos, we demonstrate directly for the first time that deficient fetal mouth movement and cleft palate occurs as a result of mis-patterned development of pharyngeal peripheral nerves and cartilages. Retinoid deficient embryos were generated by inactivation of retinol dehydrogenase 10 (Rdh10), which is critical for production of …

Progressive City In The Progressive Era : Child Welfare Reform In Louisville Kentucky., Mary K. Marlatt

Electronic Theses and Dissertations

Louisville, Kentucky has a unique character, never more apparent than during the period between 1890 and 1920, as the city attempted to balance traditional southern cultural ideals with northern progress. During this period, social reformers attempted to alleviate social ills exacerbated by the industrial revolution and urban crowding by advocating for social reform. This study concentrates on specific social reforms – settlement houses and missions, free kindergartens, child labor, juvenile justice, and pure milk depots – benefiting children in Louisville, and explores how those endeavors differed from those of their counterparts in the north and south. Child welfare reformers in …

Modeling And Counteracting Exposure Bias In Recommender Systems., Sami Khenissi

Electronic Theses and Dissertations

Recommender systems are becoming widely used in everyday life. They use machine learning algorithms which learn to predict our preferences and thus influence our choices among a staggering array of options online, such as movies, books, products, and even news articles. Thus what we discover and see online, and consequently our opinions and decisions, are becoming increasingly affected by automated predictions made by learning machines. Similarly, the predictive accuracy of these learning machines heavily depends on the feedback data, such as ratings and clicks, that we provide them. This mutual influence can lead to closed-loop interactions that may cause unknown …

Waiting Room., Helen Payne

Electronic Theses and Dissertations

Waiting Room is an installation of drawings and monotypes that re-envision everyday printed materials common in medical offices. The brochures, poster, bulletin board and children’s ABC book in this Waiting Room offer guidance suggest invasive and dysfunctional policy. A door opens onto a further room, where a hundred ultrasound images cascade onto the floor. This work, called Transducer Phosphene is the product of a fictional character’s encounter with a cruel (and not fictive) abortion policy. Waiting Room is the fruit of an inquiry that spanned my three years of study at the Hite Art Institute, a probing into the politics …

Remaking Identities, Reworking Graduate Study : Stories From First-Generation-To-College Rhetoric And Composition Phd Students On Navigating The Doctorate., Ashanka Kumari

Electronic Theses and Dissertations

This dissertation responds to the decreasing number of first-generation-to-college doctorates in the humanities and the limited scholarship on graduate students in Rhetoric and Composition. Scholars in Rhetoric and Composition have long been invested in discussions of academic and/or disciplinary enculturation, yet these discussions primarily focus on undergraduate students, with few studies on graduate students and far fewer on the doctoral students training to become the next wave of a profession. In this dissertation, I argue that if we engage intersectional identities as assets in the design of doctoral programs, access to higher education and academic enculturation can become more manageable …

The Division I Men's Basketball Transfer Redshirt Requirement : Hurting Or Helping Black Student-Athletes?, Sarah B. Williams

Electronic Theses and Dissertations

The following study provided a voice to an otherwise unheard from population of former student-athletes as they explained their transition experiences with the Division I transfer and redshirt year. The purpose of the study was to explore the Black student-athlete’s transition experience through the redshirt year in Division I men’s basketball from a qualitative, phenomenological research perspective. The study used two theories as guiding frameworks: 1) Schlossberg’s (1981) Transition Theory and 2) Critical Race Theory (Calmore, 1992; Tate, 1997). Both Schlossberg’s (1981) Transition Theory and Critical Race Theory were used to examine the transition experience of the Black male basketball …

Send Nudes : Art On Social Anxiety And Human Connection In An Internet Driven Society., Lauren A Bader

Electronic Theses and Dissertations

My social anxiety is the driving force behind my thesis work. Sufferers of social anxiety often have a hard time forming relationships because their fear of social interaction causes them to refrain from self-disclosure. Self-disclosure is the act of telling others personal details about yourself. This can be hard for people with social anxiety because of their intense fear of judgement. It is quite common for people with this type of anxiety to seek out opportunities to self-disclose online because they have the advantage of anonymity and time to construct thoughtful responses. In my work I seek out participants online …

Different And The Same: A Comparison Of Vertical And Lateral Transfer Students., Joshua Harris Mckee

Electronic Theses and Dissertations

As more students evaluate their choice for higher education, the rate of transfer students continues to grow. The transfer population is often addressed broadly in research studies, and few examine differences among the population. This study was designed to analyze the differences in transfer shock and retention rates between students who transferred from a community college to a four-year institution (vertical) versus those who transferred from one four-year institution to another (lateral). Participants of this study consisted of 1,032 students who transferred to the University of Louisville during the fall 2014, 2015, and 2016 semesters. Results indicated, when controlling for …

Doing Place : A Framework For Interpreting Young Adults' Commitments To Appalachian Kentucky., Jeanelle Susanne Sears

Electronic Theses and Dissertations

Confronted with negative consequences of rural youth outmigration, many rural communities are interested in how to recruit and retain young adults. Yet, attention has largely been focused on those who leave. This study thus explores the experiences of young adults who make conscious commitments to improving the communities of Appalachian Kentucky despite many obstacles and pressures to leave. Two aims were established in this pursuit: 1) Understand and provide deep description of young adults’ experience of committing to stay and work in Appalachian Kentucky and the meaning they make of these decisions and 2) Develop a context specific framework for …

A Study On Ultrasonic Energy Assisted Metal Processing : Its Correeltion With Microstructure And Properties, And Its Application To Additive Manufacturing., Anagh Deshpande

Electronic Theses and Dissertations

Additive manufacturing or 3d printing is the process of constructing a 3-dimensional object layer-by-layer. This additive approach to manufacturing has enabled fabrication of complex components directly from a computer model (or a CAD model). The process has now matured from its earlier version of being a rapid prototyping tool to a technology that can fabricate service-ready components. Development of low-cost polymer additive manufacturing printers enabled by open source Fused Deposition Modeling (FDM) printers and printers of other technologies like SLA and binder jetting has made polymer additive manufacturing accessible and affordable. But the metal additive manufacturing technologies are still expensive …

A Two-Stage Approach To Ridesharing Assignment And Auction In A Crowdsourcing Collaborative Transportation Platform., Peiyu Luo

Electronic Theses and Dissertations

Collaborative transportation platforms have emerged as an innovative way for firms and individuals to meet their transportation needs through using services from external profit-seeking drivers. A number of collaborative transportation platforms (such as Uber, Lyft, and MyDHL) arise to facilitate such delivery requests in recent years. A particular collaborative transportation platform usually provides a two sided marketplace with one set of members (service seekers or passengers) posting tasks, and the another set of members (service providers or drivers) accepting on these tasks and providing services. As the collaborative transportation platform attracts more service seekers and providers, the number of open …

M0mentary Lapses, Alice Salyer

Electronic Theses and Dissertations

The artist discusses her Master of Fine Arts exhibition Momentary Lapses, held at Tipton Gallery, February 25-March 8, 2019. The mixed media works and video examine the intersections between digital, somatic and societal decay through the mediation of the digital image by physical anthropogenic efforts.

Themes in the work include glitch art and theory, entropy, memory, decay, and loss. Contemporary American society’s desensitization associated with the oversaturation of digital imagery is discussed, as well as Guy Debord’s theory of the Spectacle, and the artistic practices of Kurt Schwitters and Robert Rauschenberg.

Cooking Lessons: Oral Recipe Sharing In The Southern Kitchen, Alana Claxton

Electronic Theses and Dissertations

This study analyzes oral recipe sharing practices as they emerge in Southern cooking. Researcher and participants were immersed in cooking recipes together in a qualitative research method that combined interactive interviewing with sensory ethnography. Findings revealed a category of oral recipe sharing practices that is missing from the literature: cooking lessons. This study identified cooking lessons as a distinct recipe sharing practice and worked to further operationalize and concretize such practices in hopes of spurring further research.

Tennessee High School Counselors' And Dual Enrollment Advisors' Perceptions Of Student Readiness For Dual Enrollment, Aleeta L. Shaw

Electronic Theses and Dissertations

The purpose of this qualitative phenomenological study was to explore Tennessee high school counselors’ and dual enrollment advisors’ perceptions of student readiness for dual enrollment within the context of school, institutional, state, and federal policies as aligned with adolescent development theories in order to inform both policy and practice. Twelve purposely sampled participants from three school districts within the First Tennessee Core Region responded to questions via a recorded phone interview. Participants reflected on the readiness of their students for dual enrollment in the academic, social, and emotional domains. Additionally, participants identified strengths and weaknesses of dual enrollment programs and …

Introducing A New Prevention Of True Self And Cognitive Dissonance Intervention To Improve Help-Seeking For Female College Students With A Risk Of An Eating Disorder, Margaret A. Hance

Electronic Theses and Dissertations

In the United States, eating disorders affect approximately 20 million women annually (National Institutes of Health, 2011). With such a high prevalence, ensuring help-seeking in individuals with eating disorders is critical. A previously-supported eating disorder prevention approach includes cognitive dissonance intervention (CDI). CDI’s purpose is to change a person’s behavior to reflect their attitude or cognition. While true self intervention has not been with previously been applied to eating disorders, it has been efficacious in improving psychological risk factors associated with eating disorder risk. The current study combined true self and CDI to test a more holistic prevention tool (i.e. …

Becoming A Master Manager: An Analysis Of Snap Recipient Stories Of Navigating Government Assistance, Kallie Gay

Electronic Theses and Dissertations

This study examines experiences of utilizing government assistance in the United States. It focuses on the ways in which persons participating in the Supplemental Nutrition Assistance Program (SNAP) communicatively managed their lives in relation to their role in the program. Specifically, the research reveals that SNAP recipients are master managers. After synthesizing the pre-existing body of research concerning social assistance in the U.S. and its effects on those who utilize it, the author argues that sharing the stories of marginalized groups can serve to reduce stigma surrounding government assistance participation. Employing a Feminist Standpoint Theory sensibility to elicit such stories, …

Synthesis And Evaluation Of 1,2,4-Oxadiazolidinones: The Search For A Potential Non-Β-Lactam Β-Lactamase Inhibitors., Chimdi Eke Kalu

Electronic Theses and Dissertations

β-lactam antibiotics have been the most widely used drug of choice to combat infectious disease caused by bacteria. Unfortunately, their effectiveness is drastically threatened by bacterial β-lactamases. β-lactamases is responsible for the resistance to most antibiotic drugs. For decades, β-lactam β-lactamases inhibitors have been used to reduce bacterial resistance; however, in this study 1,2,4-oxadiazolidinone derivatives as a non-β-lactam β-lactamases inhibitor against TEM-1 and P99 β-lactamases. The significance of oxadiazolidinone is the prominent five-membered ring scaffold in its structure, which is configurationally stable and present in other biologically active compounds such as linezolid and avibactam. Oxadiazolidinones were synthesized by treating nitrones …

The Effects Of Japanese Ryokan Attributes On Perceived Values And Purchase Intention, Ryuichi Karakawa

Electronic Theses and Dissertations

The increasing demand for spa and hot spring resorts, particularly within the luxury markets, provides an opportunity for new types of accommodations. This study focused on Ryokan which is described as traditional Japanese hotels with hot springs. Despite the recent trend of expanding Japanese Ryokans in the global market, most extant research had only focused on perceptions of customers who have experienced Ryokans. Therefore, this study explored what attributes of Japanese Ryokans are important to potential customers and to what extent these attributes could enhance perceived values toward Japanese Ryokans. A total of 983 usable responses were collected through an …

A Theoretical Investigation Of Small Organic Molecules On Transition Metal Surfaces, Walter Malone

Electronic Theses and Dissertations

With the ever growing number of proposed desnity functional theory (DFT) functionals it becomes necessary to thoroughly screen any new method to determine its merit. Especially relevant methods include a proper description of the van der Waals (vdW) interaction, which can prove vital to a correct description of a myriad of systems of technological importance. The first part of this dissertation explores the utility of several vdW-inclusive DFT functionals including optB86b-vdW, optB88-vdW, optPBE-vdW, revPBE-vdW, rPW86-vdW2, and SCAN+rVV10 by applying them to model systems of small organic molecules, pyridine and thiophene, on transition metal surfaces. Overall, we find the optB88-vdW functional …

The Impact Of Judo On Aggressive Behaviors In Youth With Autism Spectrum Disorder, Paola Rivera

Electronic Theses and Dissertations

The aim of this study was to examine the effects of an 8-week judo program on lifestyle habits and behavior in children with Autism Spectrum Disorder (ASD). METHODS: Participants included 25 children (ages 8-17), with a formal diagnosis of ASD. The sample participated in an 8-week judo program (45 minutes, 1x week), with measures taken at baseline and at the end of the 8-weeks. In order to assess activity levels and sleep quality, participants were instructed to wear Actigraph GT9X Accelerometers for 7 days and nights. In order to assess behavioral changes, parents were given the ABC survey to fill …

Moving Towards A Dialogic Pedagogy: Using Video Feedback As A Teaching Tool To Respond To Writing Across Disciplines, Paul Martin

Electronic Theses and Dissertations

This study examined the impact of video feedback (VF) as a teaching tool for responding to writing activities and assignments across disciplines and whether or not VF can help instructors facilitate dialogic exchanges between students and teachers. I conducted three case studies with three different instructors from three different disciplines: psychology, history, and nanoscience. To determine the potential of video feedback to facilitate dialogic pedagogies, this dissertation examined the presence of transformational leadership theory (Parkin, 2017), the voices of teaching and learning (Collison et al., 2001), and gesture theory (Bavelas et al., 2014; Peräkylä & Ruusuvuori, 2008) for the paralinguistic …

Treatment Of Electric Utility Wastewaters By Sol-Gel Solidification And Stabilization, Alex Kearns

Electronic Theses and Dissertations

To meet the demands of new regulations on coal-fired power plants, many treatment scenarios require a zero-liquid discharge (ZLD) approach. Two revisions to regulations in 2015, the Effluent Limitations Guidelines (ELG) and Coal Combustion Residuals (CCRs) rule, drastically changed the treatment approach for managing effluents at coal-fired plants. In some scenarios, coal-fired plants retired early deeming the capital cost for maintaining compliance too expensive. Traditionally, stabilization/solidification (S/S) ZLD technologies have fallen in two categories: cementitious and vitrification. However, neither approach offers the ideal solution for coal-fired power plants needing ZLD by S/S methods. In what follows, a novel sol-gel encapsulation …