Digital Commons Network^™

Applying Computational Solutions For Solving Problems In Mammalian Gene Family Evolution And Single Cell Gene Expression Analysis, Ajay Obla

Doctoral Dissertations

Archival abstract submitted

The Effect Of Changes In Racial Composition On Housing Prices: A Study Of The Most Diverse Place In The World, Youseph Anwar

Theses and Dissertations

This study attempts to illustrate that increases in minority residents may lead to decreases in housing prices. I observe the effects of changes in racial composition on housing prices in Queens, NY from 2011-2015. The following econometric tools are implemented: a fixed effects model, quantile, hedonic, and OLS regressions.

The Downward Spiral: Postmodern Consciousness As Buddhist Metaphysics In The Dark Souls Video Game Series, Paolo Xavier Machado Menuez

Dissertations and Theses

This paper is about locating the meaning of a series of games known as the Dark Souls series in relation to contemporary social conditions in Japan. I argue that the game should be thought of as an emblem of the current cultural zeitgeist, in a similar way one might identify something like Jack Kerouac's The Dharma Bums as an emblem of the counter cultural 60s. I argue that the Dark Souls series expresses in allegorical form an anxiety about living in a time where the meaning of our everyday actions and even society itself has become significantly destabilized. It does …

Psychological Conditions That Promote Job Engagement: Test Of A Model, Zhuo Chen

Doctoral Dissertations

According to Kahn’s theoretical model (1990), the following three psychological conditions - meaningfulness, safety, and availability - are the key proximal predictors of job engagement. The current study examined the effects of these three psychological conditions (meaningfulness, safety, and availability) on three aspects of job engagement (JE), using both cross-sectional and daily diary data to examine between-person and within-person relationships among these variables. Psychological conditions were also examined as mediators of relationships between organizational and personal factors and job engagement. Furthermore, positive affect (PA) was tested as a moderator of the relationships between distal predictors and the three psychological conditions. …

Workers Of The Word Unite!: The Powell's Books Union Organizing Campaign, 1998-2001, Ryan Thomas Wisnor

Dissertations and Theses

The labor movement's groundswell in the 1990s accompanied a period of intense competition and conglomeration within the retail book sector. Unexpectedly, the intersection of these two trends produced two dozen union drives across the country between 1996 and 2004 at large retail bookstores, including Borders and Barnes & Noble. Historians have yet to fully examine these retail organizing contests or recount their contributions to the labor movement and its history, including booksellers' pioneering use of the internet as an organizing tool. This thesis focuses on the aspirations, tactics, and contributions of booksellers in their struggles to unionize their workplaces, while …

Investigating The Role Of Small Noncoding Rnas In Vertebrate Anoxia Tolerance, Claire Louise Riggs

Dissertations and Theses

Very few vertebrates survive extended periods of time without oxygen. Entry into metabolic depression is central to surviving anoxia, which is supported by overall suppression of protein synthesis, yet requires increased expression of specific proteins. Studying the rapid and complex regulation of gene expression associated with survival of anoxia may uncover new mechanisms of cellular biology and transform our understanding of cells, as well as inform prevention and treatment of heart attack and stroke in humans. Small non-coding RNAs (sncRNAs) have emerged as regulators of gene expression that can be rapidly employed, can target individual genes or suites of genes, …

Microfluidic Pore Model Study On Physical And Geomechanical Factors Influencing Fluid Flow Behavior In Porous Media, Shuang Cao

LSU Doctoral Dissertations

Fluid flow in porous media is a subject of fundamental importance and relevant to numerous engineering applications. The comprehensive description of fluid interaction parameters containing wetting properties, fluid-fluid displacement ratio, and capillary pressure, are inevitably needed. Moreover, the fine-grained sediments’ response to various pore fluids and migration in porous media influences reservoir geomechanical properties and pore clogging is essential to a better understanding of fluids flow behavior.

This dissertation provides a detailed study of physical and geomechanical factors influencing fluids flow behavior in porous media. The two-dimensional micromodel tests have been conducted under a wide selection of fluids flow conditions. …

Ultrasonic Neuromodulation In Vitro At Single Neuron Resolution, Sheikh Ilham

Master's Theses

Ultrasound as a widely used imaging means for medical diagnosis has drawn growing interests as a potential noninvasive neuromodulation strategy. Focused pulsed ultrasound effectively modulates neural encoding and transmission functions especially in the peripheral nervous system (PNS) with unclear mechanism of action, which is further confounded by contradictory experimental outcomes. Lack of convincing experimental methods has hindered our mechanistic understanding of ultrasonic PNS neuromodulation. To address that, we developed a novel in vitro set up to achieve simultaneous single-unit recordings from individual mouse sciatic nerve axon and systematically studied the effect of focused pulsed ultrasound (FPUS) on action potential transmission …

Oscar Brousse Jacobson: The Life And Art Of A Cosmopolitan Cultural Broker, Anne Allbright

History Theses and Dissertations

As a graduate student studying art at Yale, Oscar Brousse Jacobson (1882–1966) pinned his career on the hopes of someday opening an art school in the American West. Jacobson was a Swedish immigrant, but he felt a deep connection to the West because he spent much of his youth on a ranch in Kansas and roamed the greater Southwest by horseback during the late 1800s. Jacobson believed that after he completed his graduate studies in New England, he would eventually return West. He planned to bring great works of art, produce his own paintings, instruct young artists, and foster art …

Instagram Influencers: The Effects Of Sponsorship On Follower Engagement With Fitness Instagram Celebrities, Morgan Neal

Theses

Instagram influencer marketing is one of the fastest growing trends in advertising. Part of what makes influencers so powerful is their ability to foster parasocial relationships with their followers. But does this relationship change when an influencer becomes affiliated with brands? This study assessed how brand promotions affect follower engagement with influencer posts through the lens of source credibility theory. A quantitative content analysis was performed on 100 fitness influencer posts and their comments (N = 7,716) to determine if followers interact differently with sponsored and organic posts. Significant differences in follower engagement and sentiments were found between sponsored and …

Investigation Of Thermal Stress Degradation In Indium-Gallium-Zinc-Oxide Tfts, Prashant Ganesh

Theses

The performance of IGZO TFTs has improved significantly in recent years, however device stability still remains a significant issue. Thermal stability of IGZO TFTs be- comes very crucial to ensure desired performance of end-product. Both bottom-gate (BG) and double-gate (DG) TFTs were observed to degrade with hotplate treatments under 200◦C. Such events are rarely reported in the literature, and thus became the primary focus of this work. The mechanism causing the instability is not completely understood, however experimental results indicate the instability occurs either di- rectly or indirectly due to the influence of H2O within the passivation oxide above the …

Facilitating Social Support Systems For Adults In Assisted Living Communities, Kathryn Marie Detwiler

Theses - ALL

This thesis project seeks to unpack how older adults living in assisted living facilities

maintain and deepen their social connections. According to established research, social support systems and active lifestyles are major factors in improving quality of life. By sitting down with residents in the assisted living division of Menorah Park in

Syracuse, and conducting a series of research activities, a better understanding of how older adults live in assisted living facilities.

One potential design solution currently being explored to keep older adults socially engaged could be the design of a social hub terminal that encourages residents to congregate daily …

Cell Laden Hydrogel Microspheres Using 3d Printed Microfluidics, Sanika Nitin Suvarnapathaki

Theses - ALL

Cell laden hydrogel microspheres using 3D printed microfluidics

Abstract

By

Sanika Suvarnapathaki

Current tissue engineering therapies use macro-scale three dimensional (3D) scaffolds to treat tissue defects surgically. Uneven cell seeding and oxygen and media perfusion cause low cell viability in these macro-scale scaffolds. Microencapsulation, a technique of encapsulating cells in biocompatible polymers or hydrogels, has the potential to address these key issues, and therefore this technology has been used for numerous healthcare applications over the last two decades. Cell microencapsulation in hydrogels that mimic the tissue physiology and biochemistry has made it possible to use natural hydrogels like gelatin methacrylate …

Online Learning With Bandits For Coverage, Mahmuda Rahman

Dissertations - ALL

With the rapid growth in velocity and volume, streaming data compels decision support systems to predict a small number of unique data points in due time that can represent a massive amount of correlated data without much loss of precision. In this work, we formulate this problem as the {\it online set coverage problem} and propose its solution for recommendation systems and the patrol assignment problem.

We propose a novel online reinforcement learning algorithm inspired by the Multi-Armed Bandit problem to solve the online recommendation system problem. We introduce a graph-based mechanism to improve the user coverage by recommended items …

Father Involvement Among Asian-Indian Immigrants In The United States: Actor-Partner Interdependence Model, Dimple P. Vadgama

Dissertations - ALL

Parenting is codependent and nested within a familial and cultural structure. While parenting research consistently demonstrates more maternal involvement with children, often fathers’ involvement gets little or no attention. One of the major limitations of fathering research is single source data, often comprised of only mothers’ reports of fathers’ involvement. The purpose of this study was to address this gap by examining the nested nature and interdependence of immigrant parents’ marital adjustment, parenting self-efficacy, and beliefs about parental role and, fathers’ involvement. Actor-partner interdependence model (APIM) was applied to examine the actor (intrapersonal or spillover) and partner (interpersonal or crossover) …

Collaboration And Conflict In Transnationally-Dispersed Zimbabwean Families, William John Suk

Dissertations - ALL

Approximately one quarter of Zimbabwean adults left their country of birth during the past twenty years. These sojourners are increasingly dispersed as tightening immigration regimes in preferred destinations and fluctuating global opportunities lead them to places with fewer historical links to Zimbabwe. This dispersive process fractures many families between multiple international locations. Nevertheless, the idea of family remains centrally important to diasporans, who work with relatives around the world to care for children and elders, to acquire important documents like passports, and to prepare for an eventual return home. Following from performative and relational theorizations of kinship, this dissertation argues …

Detection, Diagnosis And Mitigation Of Malicious Javascript With Enriched Javascript Executions, Xunchao Hu

Dissertations - ALL

Malicious JavaScript has become an important attack vector for software exploitation attacks and imposes a severe threat to computer security. In particular, three major class of problems, malware detection, exploit diagnosis, and exploits mitigation, bring considerable challenges to security researchers. Although a lot of research efforts have been made to address these threats, they have fundamental limitations and thus cannot solve the problems.

Existing analysis techniques fall into two general categories: static analysis and dynamic analysis. Static analysis tends to produce inaccurate results (both false positive and false negative) and is vulnerable to a wide series of obfuscation techniques. Thus, …

Gas Phase Oxidation Of Levulinic Acid For The Production Of Maleic Anhydride Over Supported Vanadium Oxide Catalysts, Anargyros Chatzidimitriou

Dissertations - ALL

With continued depletion of fossil carbon, there is a need to utilize renewable sources of energy and consumer end products. In this context, we examine the aerobic oxidation of levulinic acid, a bio-based platform chemical derived from lignocellulosic biomass, to produce maleic anhydride, a valuable commodity chemical. This process is carried out over supported vanadium oxide catalysts. Yields as high as 71% of the theoretical maximum were achieved at 573 K over a vanadium oxide catalyst supported on SiO2. The exact mechanism underlying this transformation is complex, but our results suggest that maleic anhydride forms by the oxidative cleavage of …

Catalytic Synthesis Of Biodiesel Fuel Under Sub/Supercritical Conditions: Kinetics And Phase Behavior, Jiuxu Liu

Dissertations - ALL

In this thesis, transesterification of triglycerides and esterification of free fatty acids were executed under subcritical and supercritical alcohol conditions, and discussed in Chapter 2-5. The project was initiated by studying the phase behavior and kinetics of transesterification reactions under severe reaction conditions (T: 300-400 oC, P=200 bar), since those conditions were suggested and commonly used in the literature. At these conditions, triglycerides reacted with alcohol within minutes, and the oil-alcohol mixture formed a homogeneous phase which minimized the boundary mass transfer resistance. The composition change of the reaction mixture made the critical point of the system approach supercritical region …

Modifications To Commercial Printers To Enable Multi-Material Fabrication Of 3d Cellular Scaffolds, Lucas D. Albrecht

Theses - ALL

The scarcity of organs for patients that need transplants has led to exceedingly

lengthy waits for organ transplants for sick patients. Fabrication of tissues and organ

constructs in-vitro has potential to end the shortage, however many of the machines

used to create these tissues and organs are expensive, not easy to use, and do not

have any further practical applications. Bioprinting technology has the potential to

revolutionize the fabrication of biological constructs that can be used as in vitro model

tissues and vivo substitutes. Bioprinting is the process of using conventional 3D printing

methods and computer-aided-design (CAD) to create patient …

The Effects Of Isolation, Encoding Strength And Feature Distinctiveness On Recognition And Categorization, Osung Seo

Theses - ALL

Previous research has shown that in recognition tasks, a distinctive feature can increase hit rates and decrease false alarm rates associated with an isolated item in a similarity space. However, this is inconsistent with the prediction of the global activation models, such as the Generalized Context Model. Since it is generally assumed that recognition and categorization operate under the same similarity-based generalization mechanism, a distinctive feature should also affect categorization judgments in a similar manner. However, the effects of feature distinctiveness on categorization has yet to be explored. For this reason, the present paper investigates the effects of feature distinctiveness …

Effects Of Sodium Chloride On Anthracene Photolysis Kinetics In Aqueous-Organic Solutions, Kyle Blaha

Theses - ALL

Polycyclic aromatic hydrocarbons (PAHs) are dangerous pollutants. The photolysis kinetics of PAHs are of interest because they are carcinogenic and can increase in toxicity through photodegradation into secondary products. They are often associated with particulate matter. The composition and physical properties of the particulate matter can affect PAH photolysis kinetics. We investigated the effects of sodium chloride on the photolysis kinetics of the PAH anthracene in water and octanol as well as mixed-phase solutions (water-octanol), which were used as models for aqueous-organic aerosols. A non-linear dependence on sodium chloride concentrations was observed. Sodium chloride enhanced photolysis at concentrations up to …

Coast Guard Public Affairs Middle Management And The Excellence Study, Stephen Bailey Lehmann

Theses - ALL

As is the nature of any organization, the U.S. Coast Guard is constantly seeking to improve its functions, operations, policies and procedures. In terms of communications, the service’s Public Affairs Program has instituted a number of different competencies and qualifications to better prepare candidates as they approach the next rank. This study sought to provide an outline of the middle-management component as it exists within the public affairs element and compare the findings to those published in the Excellence Study to assist the service by providing a basis from which additional policy recommendations could be made.

The study was conducted …

Increased Striatal Vulnerability To 3-Nitropropionic Acid In Male, But Not Female, Mice Lacking Interleukin-1r1, Matthew Frederick Allen

Theses - ALL

Interleukin-1β (IL-1β), classically considered as a pro-inflammatory cytokine, has proven essential to cellular defense in nearly all tissues (Kaur et al., 2014, Ren and Torres, 2009). In brain, studies suggest that IL-1β has pleiotrophic effects. It acts as a neuromodulator, has been implicated in the pathogenic processes associated with a number of CNS diseases, but has also been shown to provide protection to the injured CNS. With respect to the latter, IL-1β signalling appears to mitigate pathology and motor symptoms in a mouse model of Huntington’s disease (HD), a progressive neurodegenerative condition that targets the striatum. Specifically, HD mice bred …

Mammy Representations In The 21st Century, Ayondela Mcdole

Theses - ALL

This thesis examines the signification of the mammy stereotype in the 21st century. The performances of Martin Lawrence, Tyler Perry and Eddie Murphy’s as mammies in drag are the selected texts for the project. By presenting the many mammy representations over the past 150 years, I outline the ways in which the mammy stereotype dehumanizes black women and hinders the Pan African agenda. Through the commodification of the mammy stereotype it has been de-historicized and thus separated from its beginnings as a part of the white supremacist imagination. Discourse analysis is used to analyze its meaning and signification while black …

Readers’ Perceptions Of Newsworthiness And Bias As Factors In Participation With Digital News Content, Gregory James Munno

Dissertations - ALL

Audience participation with digital news content has become a central feature of news consumption. These participatory news behaviors – commenting on, sharing, and “liking” news stories – have implications for both newsreaders and producers of news. This dissertation tests a structural model of commenting behavior using survey data (N = 335). The model builds on suggestions of a connection between hostile-media effects and commenting. This study adds newsworthiness to the structural equation, hypothesizing that newsworthiness increases readers’ perceptions that an article will influence other readers. These relationships should increase hostile-media effects, and, therefore, a reader’s likelihood of commenting. The model …

Achilles And The Batman On The Plane Of Immanence: Deconstructing Heroic Models, Herman Frederick Filice

Dissertations - ALL

Achilles and The Batman on the Plane of Immanence: Deconstructing Heroic Models attempts to reposition the way the reader views literary heroism. By defining heroism as a reaction to forces within and external to his society, heroism becomes a function of Michel Foucault’s concept of Otherness. Using Deleuze and Guattari’s notions of the Nomad, striated and unstriated space and schizoanalysis, as well as Foucault’s basic concepts of power and its two-way, invisible flow, one will find that heroism develops and functions in strikingly similar manners no matter what time or culture germinates it. The universal problems the hero creates for …

Enacting “Technology” And Everything Else: Gendered Practices And The System Of Crop Intensification, Natasha Susan Koshy

Dissertations - ALL

This dissertation is a qualitative examination of the functioning of a rural

development project in a Himalayan region of India, with a special focus on a

particular project activity centred around an agro-ecological method of crop

production, the System of Crop Intensification (SCI). Environmental changes and

disasters along with rapid transformations in the rural economy in Uttarakhand has

engendered a renewed interest in non-mainstream farming practices. However, the

success and/or failure rates of adoption of new agricultural methods and technologies

remains a poorly understood phenomenon. Studies of adoption rates tend to focus on

the aspects of the technology itself, rather …

Oxygen Transport Membrane Reactors For Oxy-Fuel Combustion And Carbon Capture Purposes, Ryan Falkenstein-Smith

Dissertations - ALL

This thesis investigates oxygen transport membrane reactors (OTMs) for the application of oxy-fuel combustion. This is done by evaluating the material properties and oxygen permeability of different OTM compositions subjected to a variety of operating conditions. The scope of this work consists of three components: (1) evaluate the oxygen permeation capabilities of perovskite-type materials for the application of oxy-fuel combustion; (2) determine the effects of dual-phase membrane compositions on the oxygen permeation performance and membrane characteristics; and (3) develop a new method for estimating the oxygen permeation performance of OTMs utilized for the application of oxy-fuel combustion.

SrSc0.1Co0.9O3-δ (SSC) is …

The Preemptive Paradox: The Rise Of Great Powers & Management Of The International System, Jeffrey Treistman

Dissertations - ALL

Since the beginning of the modern state system only a few select nations have achieved great power status. But what can account for their rise? The presence of existing great powers would suggest that aspiring states should encounter formidable obstacles that would render their success implausible. In some cases extant great powers sought to counter the rise of a new peer, but the historical record also reveals that incumbents sometimes did not contest the rise of potential competitors. Thus, great powers have pursued two divergent strategies: contestation and nonintervention. How then do great powers decide on which policy to implement? …