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Essays In Microeconomics, Teng Ma

Graduate Theses and Dissertations

This dissertation consists of three essays of different topics in microeconomics.

Chapter 1 investigates the effect of environmental uncertainty over the issue of resource allocation in a common pool resources setting. This chapter provides a model of how agents allocate resource among abatement technology, production, and saving with an endogenously determined uncertain damage. The results of a laboratory experiment show a negative effect of uncertain damage on abatement technology adoption and a non-linear relationship between the investment in abatement technology and the self reported risk aversion. Contrary to the “common belief” that greater risk averse agents invest more in abatement …

Like Me, Do What I Say, & Think About My Influence: The Effects On Witness Choosing And Metacognition, Brittany Race

Graduate Theses and Dissertations

Confidence can be a strong predictor of accuracy if circumstances are ideal (Wixted & Wells, 2017), but ideal circumstances are not always present. As such it is important to understand ways to ameliorate potentially negative effects on eyewitness metacognition. Rapport building, though seen as an important element of police/witness interaction (Vallano et al., 2015), can lead to some potentially negative memory effects (Wright et al., 2015). Additionally steering, or the process of directing a witness toward a particular suspect, can increase false identifications. Recently the researcher has developed a paradigm meant to better calibrate confidence by reinstating the context of …

Collaborative Speculation And Overvaluation: Evidence From Social Media, Adam Barrett Booker

Graduate Theses and Dissertations

I use data from StockTwits and Twitter to provide evidence that investor attention on social media in the period before earnings is related to short-term overvaluation, consistent with bullish investors herding around common information. In the 2 to 60 days after earnings, returns for companies in the highest quintile of pre-earnings announcement investor attention are 4.2 percent lower than those of companies in the lowest quintile. I find evidence that the negative post-earnings drift result found in this study is related to investors waiting until after earnings are announced to enact costly arbitrage strategies. I further examine intra- and inter-network …

Polarization Properties Of Airy And Ince-Gaussian Laser Beams, Sean Michael Nomoto

Graduate Theses and Dissertations

The description of polarization states of laser light as linear, circular polarization within the paraxial scalar wave approximation is adequate for most applications. However, this description falls short when considering laser light as an electromagnetic wave satisfying Maxwell's equations. An electric field with a constant unit vector for direction of the field and a space dependent complex scalar amplitude in the paraxial wave approximation does not satisfy Maxwell equations which, in general, requires all three Cartesian components of electric and magnetic fields associated for a nonzero laser beam to be nonzero.

Physical observation of passing a linearly polarized laser through …

Choosing Information Systems As A Major: Factors That Influence Selection, Carole L. Shook

Graduate Theses and Dissertations

The purpose of this study was to examine student perceptions of factors affecting the decision to select information systems as an undergraduate major. Additionally, information systems students were compared to other business students to see if significant differences existed between groups. The four factors studied included: (a) personal interest in the major, (b) student competence, (c) value and utility, and (d) external influences of other people and academic experiences.

A convenience sample was used at a public university in the Southeastern region of the United States. Two hundred junior/senior students were selected as participants. One hundred of the students were …

The Functional And Structural Analysis Of Drosophila Robo2 In Axon Guidance, Lafreda Janae Howard

Graduate Theses and Dissertations

In animals with complex nervous systems such as mammals and insects, signaling pathways are responsible for guiding axons to their appropriate synaptic targets. Importantly, when this process is not successful during the development of an organism, outcomes include catastrophes such as human neurological diseases and disorders. It is vital to determine the underlying causes of such diseases by understanding the development of the nervous system. There are many pathways that have been identified to play a role in this, however, we lack an understanding of how these pathways can promote such diverse outcomes in different populations of neurons. These pathways …

Was Rome Not Beautiful Too? Modern Germany And The Legacy Of Ancient Rome, Jason Charles Phillips

Graduate Theses and Dissertations

It has been over two thousand years since the Battle of the Teutoburg Forest (9 A.D.). What really happened at the battle is anyone’s guess. It is this silence that allowed for the Germans to appropriate this battle and turn it into a major moment of German history. In the modern German imagination this story became one of Hermann liberating the ancient Germans from the tyranny of Rome. This battle preserved the purity of the ancient Germans and prevented a Roman corruption of their world. From the rediscovery of Tacitus in the fifteenth century to the era of Hitler, ancient …

Effects Of Multivitamin-Mineral Supplementation On Mental Health Among Young Adults, Ya-Hsuan Chang

Graduate Theses and Dissertations

The percentage of young adults who had mental illnesses has increased from 2008 to 2015. However, few existing studies investigating the potential benefits of multivitamin-mineral (MVM) supplementation on mental health focused on young adults (18-24 years of age), whose eating behaviors are often unhealthy. The purpose of this study was to examine the effects of a MVM supplement on mental health in young adults. One hundred and thirty-three college students (Mage=20.59, SD=1.77; 80.15% female) participated in this randomized, double-blind, placebo-controlled trial. Participants consumed either a MVM supplement or a placebo for 30 days. The supplement contained B Vitamins, Vitamin C, …

Normative Pragmatic Selfhood: A Pragmatist Conception Of Value For Marginal Cases, Sam Noel Johnson

Graduate Theses and Dissertations

I develop a theory of personal ontology called normative pragmatic selfhood (NPS) to explain what persons are and how they are morally valuable. I also demonstrate the applicability of NPS theory by using it to assess the moral status of marginal cases in bioethical dilemmas. I begin by discussing the concept of intrinsic value and why it is problematic when it comes to persons. I then draw upon John Dewey’s theory of value, specifically the concept of growth, and Kant’s concept of humanity to show that persons are objectively yet extrinsically valuable. Next, I discuss and argue how the psychological …

Nesting Success Of Dickcissel (Spiza Americana) And Non-Breeding Grassland Bird Use Of Northwest Arkansas’ Remnant And Restored Tallgrass Prairies, Alyssa L. Derubeis

Graduate Theses and Dissertations

Dwindling populations of North American grassland birds are linked to habitat loss. Tallgrass prairie only covers 3% of its pre-settlement-era range. Small-scale restoration projects attempt to increase acreage for prairie avifauna, and while some breeding grassland species are present at these sites, nesting success and non-breeding use are still largely unknown. Both life history aspects are required for effective grassland bird conservation. My first objective was to access nest success of the Dickcissel (Spiza americana) at two remnant and two restored tallgrass prairies in Northwest Arkansas. From May-August 2017 and 2018, I found 114 nests that I monitored to determine …

Emotion Identification And Beliefs About Emotions As Mediators Of Ptsd And Parenting Meta-Emotion Philosophies, Maegan Calvert

Graduate Theses and Dissertations

Approximately 20% of women are sexually victimized and incarcerated women’s rates of victimization are much higher. In addition, women have a higher rate of PTSD and trauma-related sequelae than men. Interpersonal trauma experiences can have a negative impact on emotional processes such as alexithymia, recognizing others’ emotions, and healthy beliefs about emotional experiences. These difficulties are associated with problematic parenting. However, the mediational processes by which PTSD and disruptive emotional processes affect parenting is unclear. The current study examines the associations among PTSD, alexithymia, negative beliefs about emotions, emotion recognition in children, and parenting meta-emotion philosophies in incarcerated women presenting …

Characterization Of The Swine Gut Microbiome Dynamics, Culturomics And Probiotics, Xiaofan Wang

Graduate Theses and Dissertations

The gastrointestinal tract is a critical place where the immune system concentrates many of its protective functions. It exerts both physical and biochemical defenses against invading foodborne pathogens and other hazards. In pigs, the gut microbiota community assembled postnatal plays a very important role in the development of multiple physiologic aspects, such as development of the gastrointestinal tract, nutrient exchange, immune defense against foreign pathogens and growth performance. Microbiome-host communication changes with age. Despite recent advances in understanding the swine gut microbiome at different growth stages, a comprehensive longitudinal study of the lifelong dynamics of the swine gut microbiome is …

Consumer Preferences For Sustainable Rice Practices In Nigeria, Glory Esohe Okpiaifo

Graduate Theses and Dissertations

Improving the sustainability of rice production is important given its position as a global staple and its environmental footprint. The adoption of sustainable practices can generate positive externalities such as lower environmental pollution and improved working conditions for rice industry workers that could be capitalized via the design of consumer-based marketing strategies. The Sustainable Rice Platform (SRP) initiative aims at advancing the adoption of sustainable practices in rice production. We assess consumers’ perceptions of the SRP sustainability indicators using the Best-Worst Scaling approach to rank SRP sustainability attributes according to their preference shares and examine the effects of demographic characteristics …

The Functional Conservation Of Frazzled In Insects, Benjamin Wadsworth

Graduate Theses and Dissertations

Axons in the developing embryo receive and react to signals that direct their growth to reach target tissues at specified locations. The signal pathways that direct midline crossing of axons during embryonic development have been comprehensively examined in the past years using the Drosophila ventral nerve cord or the spinal cord as a model system. A number of these signaling mechanisms are conserved, however disparities have been found between species in general strategy or the molecular signals controlling the response of axons to guidance cues.

The Netrin-Frazzled pathway has been shown to aid in midline crossing of axons in the …

Poultry Labeling: Knowledge, Perceptions, And Preferences Among Adolescents, Eleni L. Parsons

Graduate Theses and Dissertations

The purpose of this study was to determine the knowledge, perceptions, and preferences of adolescents in regard to the labeling of poultry products. The theory of planned behavior (TPB) and Elaboration Likelihood Model (ELM) were used to display the relationship of perceptions, attitude, and behavior intentions. Quantitative data was collected in a descriptive research design. The population included youth, aged 14 – 18 years, involved in the Arkansas 4-H State O’Rama competition (N = 400). The sample (n = 80) ensured a 90% confidence interval of the population. Data was collected by administering paper surveys that addressed four product labels …

Dynamics Of Land Use, Environment, And Social Organization In The Sasanian Landscape Of Eastern Iraq—Western Iran, Mitra Panahipour

Graduate Theses and Dissertations

Understanding human-environment interactions has been one of the main challenges in archaeological studies over recent years. Past research on the Near Eastern territorial empires in general, and the Sasanian Empire in particular, primarily emphasized the dominant role of human on landscape transformation. In addition, politically centralized schemes such as agricultural intensification and expansion of water supply systems have been at the center of most of the discussions and remained the main hypothesis of the Sasanian land use practices.

This dissertation investigates population’s diverse responses to environmental variability during the Sasanian period (224-651 CE) across a landscape in eastern Iraq—western Iran. …

Essays On Corporate Finance And Interstate Risk Sharing, Liu Hong

Graduate Theses and Dissertations

My dissertation consists of two topics: the relation between derivatives and corporate finance, and the relation between bank deregulation and interstate risk sharing.

In the first essay, I study the use of commodity derivatives among U.S. oil and gas producers. Using hand-collected data, I find large variations in hedging intensity and hedging profits. On average, firms generate significantly positive profits, and their profits relate positively to the intensity of hedging. I further decompose the hedge ratio into two components: the pure hedging component and the market timing component. I find that the hedging profits relate strongly and positively to the …

On The Path To A Resilient Urban Food System In A Rural State: A Mixed-Method Needs Assessment Of Urban Producers And County Extension Agents In Arkansas, Catherine Elizabeth Dobbins

Graduate Theses and Dissertations

This project utilized a mixed-method needs assessment approach to urban agriculture in Arkansas, a predominately-rural state. Chapter II was a qualitative study, using semi-structured, in-depth interviews, that investigated the perceptions, needs, and experiences of Arkansas urban farmers and their interactions with the University of Arkansas Division of Agriculture Cooperative Extension Service (CES). Interviews were conducted with 16 urban farmers in Northwest and Central Arkansas. The interview data revealed individualized needs based on the size, years in operation, and mission of each urban farmer interviewed. General needs were determined, such as market pricing, co-ops, and access to appropriate equipment, but generally …

Assessing The Economic Viability Of Arkansas Farms Under The 2018 Farm Bill, Grant Wilson

Graduate Theses and Dissertations

For over a century, the American agricultural industry has relied on federal government support to aid in the maintenance and expansion of farming operations. Since 1933, a series of 18 farm bills have shaped agricultural policy into what is commonly known as the agricultural safety net. The 2018 farm bill was passed on December 20, 2018 and is the most recent update of the agricultural safety net. Commodity programs and federal crop insurance are two key components of today’s agricultural safety net, and many times, these programs may be the difference between a net loss and a positive net income …

"I Like . . . Red Bone:" Colorism, Rappers, And Black College Sorority Women At A Predominantly White Institution, Whitney Frierson

Graduate Theses and Dissertations

In this thesis, I examine black college sorority women’s views about skin tone bias in hip-hop culture. I conduct interviews with 12 black undergraduate women in Black Greek Letter Sororities at a predominantly white institution. Prior research finds that rap music sends skin color messages to adolescent women through lyrical content and music videos. I build on this work by exploring how the experiences of being in college shape black college sorority women’s views on skin tone bias and hip-hop. I find that time in college has been an important life stage in which black sorority women gained an increased …

Remembering How To Listen: A Theoretical And Pedagogical Approach To Literacy, Adolescence, And Young Adult Literature, Stuart A. Morris

Graduate Theses and Dissertations

There is a substantial and growing body of critical theory on young adult literature (YAL), and there are a multitude of publications dealing with how secondary English/ELA teachers incorporate YAL in their classroom. From a curricular perspective, however, YAL is still most often considered inferior to canonical novels (i.e., “classics” or “great books”); thus, there has been no substantive or concerted movement to include YAL in secondary English/ELA at a curricular level, particularly in grades ten, eleven, and twelve. While the scholarship on YAL is extensive, discussion of YAL is most often devoted to pedagogy or literary theory, as if …

Five-Level Flying Capacitor Converter Used As A Static Compensator For Current Unbalances In Three-Phase Distribution Systems, Rafael Franceschi

Graduate Theses and Dissertations

This thesis presents and evaluates a solution for unbalanced current loading in three-phase distribution systems. The proposed solution uses the flying capacitor multilevel converter as its main topology for an application known as Unbalanced Current Static Compensator. The fundamental theory, controller design and prototype construction will be presented along with the experimental results. The Unbalanced Current Static Compensator main objective is the balancing of the up-stream currents from the installation point to eliminate the negative- and zero-sequence currents originated by unbalanced single-phase loads.

Three separate single-phase flying capacitor converters are controlled independently using a d-q rotating reference frame algorithm to …

Effect Of Cross-Validation On The Output Of Multiple Testing Procedures, Josh Dallas Price

Graduate Theses and Dissertations

High dimensional data with sparsity is routinely observed in many scientific disciplines. Filtering out the signals embedded in noise is a canonical problem in such situations requiring multiple testing. The Benjamini--Hochberg procedure using False Discovery Rate control is the gold standard in large scale multiple testing. In Majumder et al. (2009) an internally cross-validated form of the procedure is used to avoid a costly replicate study and the complications that arise from population selection in such studies (i.e. extraneous variables). I implement this procedure and run extensive simulation studies under increasing levels of dependence among parameters and different data generating …

Tattoo Narratives And Counseling, Danny Lane Mccarty

Graduate Theses and Dissertations

Much research has been done on tattoos and on those who acquire them, but most of the research has focused on negative correlations that might exist with people who have tattoos. This current research, however, showed that people’s tattoo narratives can relate to how they view self, others, and the world, and to how they approach life. A narrative approach to qualitative research was used, and ten people participated in the study. Participants’ views of self, others, and the world were discussed as these views emerged from the narratives. Their possible approaches to life were also addressed. Themes that emerged …

Automatic Methods To Enhance The Quality Of Colonoscopy Video, Nidhal Kareem Shukur Azawi

Graduate Theses and Dissertations

Colonoscopy is a form of endoscopy because it uses colonoscopy device to help the doctor to understand a colon patient. Enhancing the quality of Colonoscopy images is a challenge because of the wet and dynamic environment inside the colon causes many problems even the colonoscope devise has a good quality. Some of these problems are blurriness, specular highlights shiny areas.

In this work, different kinds of techniques have been investigated in order to improve the quality of colonoscopy images. Also, variety of preprocessing approaches (removing bad images, resizing images, median filtration with and without image resizing) have been conducted to …

How Does Alcohol Intoxication Impair Risk Detection Of Sexual Assault? Testing An Integration Of Alcohol Myopia And Social Information Processing Theories, Alexander James Melkonian

Graduate Theses and Dissertations

Sexual assault among young adults is a highly prevalent public health concern. Alcohol is often implicated as a risk factor for sexual assault through its impairing effects on an individual’s ability to process and respond to social cues in the environment. The effect of alcohol myopia can result in greater focus of attention on salient environmental cues. The relationship between alcohol intoxication and resulting behavior may depend on what type of information is most salient. The current study examined the effects of alcohol on social information processing as it relates to sexual assault risk detection. Method: Participants were 48 young …

Dynamics Of Momentary Perceived Self-Regulation Abilities As Novel Predictors Of Overeating In Daily Life, Kayla Dawn Skinner

Graduate Theses and Dissertations

Despite an increase of research in the realm of overeating - a well-known contributor to obesity - the psychological mechanisms that maintain overeating behaviors across time and context are still poorly understood. It may be that people’s perceptions of their self-regulation abilities fluctuate over time, and overeating results from momentary increases in negative mood eliciting negative perceptions of their self-efficacy and current willpower, stronger beliefs that cravings can be controlled and a greater ability to tolerate distress. The current study examined the dynamics of and momentary predictors of overeating using a 7-day EMA protocol to study unsuccessful restrained eaters (n …

The South African Women's Movement: The Roles Of Feminism And Multiracial Cooperation In The Struggle For Women's Rights, Amber Michelle Lenser

Graduate Theses and Dissertations

In the historiography of South Africa’s recent past, focus has been most heavily placed on apartheid and the anti-apartheid movement, with much emphasis placed on male involvement and men as the primary agents of change in the country. Women are largely viewed as playing a supportive role to male activists throughout the movement, and far less has been written on female involvement or women’s activism in its own right. Running parallel to the anti-apartheid movement, however, was a women’s movement characterized by women across the racial and socioeconomic spectrum struggling to secure their own rights in a very hostile and …

A Simulation Tool For Evaluating The Environmental Impacts Of Management Scenarios For Modern Broiler Production Systems, Martin Andrew Christie

Graduate Theses and Dissertations

The purpose of this work is to provide a simulation tool that allows broiler production practitioners and researchers to simulate the effects of farm design and management practices on resource consumption and environmental impacts. This tool allows the user to design unique farms and simulates on farm processes required to raise broiler chicks to a marketable age. The use can input data such as farm location, broiler breed, flock size, ration type, barn dimensions, and climate control equipment specifications. The algorithms used to simulate broiler breed specific feed intake, broiler weight gain, and other on farm processes such as heating, …

The Relationship Between English Language Learners’ Mathematics Problem Solving Strategies And The Mathematics Register, Sarah Reeves Frederickson

Graduate Theses and Dissertations

This case study followed three Hispanic and three Marshallese students’ participation in a seventh grade pre-algebra unit over the course of four weeks. Pre-assessment items indicated that the students had difficulty with aspects of the mathematics register. Their teacher employed an interpretation of the gradual release model of instruction in which direct strategies for translating word problems into equations with unknowns were modeled prior to students doing similar problems on their own. In these situations, students showed some success in solving similar problems. However, post-assessment results indicated that none of the six students were able to successfully solve open response …