Digital Commons Network^™

The Power Fantastic: How Genre Expectations Mediate Authority, Angela Rose Cox

Graduate Theses and Dissertations

This dissertation reconciles academic and popular uses of the term genre, concluding that genre is a transmedial, mutable, associative, recognized system regulated through tacit understandings of prestige and power in a given Social space. The study employs a digital humanities method (dependent on digitally facilitated data analysis), conducting descriptive discourse analysis on collected online discussions from fan spaces concerning the fantasy genre and matters related to fantasy. In this way, I construct an image of the fantasy genre, and genre in general, as a multimodal space in which material freely passes between traditional and new media and participants actively negotiate …

Si-Based Germanium-Tin (Gesn) Emitters For Short-Wave Infrared Optoelectronics, Seyed Amir Ghetmiri

Graduate Theses and Dissertations

Conventional integrated electronics have reached a physical limit, and their efficiency has been influenced by the generated heat in the high-density electronic packages. Integrated photonic circuits based on the highly developed Si complementary-metal-oxide-semiconductor (CMOS) infrastructure was proposed as a viable solution; however, Si-based emitters are the most challenging component for the monolithic integrated photonic circuits. The indirect bandgap of silicon and germanium is a bottleneck for the further development of photonic and optoelectronic integrated circuits.

The Ge1-xSnx alloy, a group IV material system compatible with Si CMOS technology, was suggested as a desirable material that theoretically exhibits a direct bandgap …

Investigation Of The Optical Properties Of Pbse/Pbx Nanocrystals For Photodetector Applications, Haley Ann Morris

Graduate Theses and Dissertations

Lead selenide and lead selenide/lead sulfide core/shell nanocrystals were investigated for use in near infrared photodetectors. A colloidal synthesis method was used for both the core and core/shell configurations. The lead sulfide shell was examined in order to mitigate oxidation of the nanoparticle surface. Absorbance and photoluminescence spectra were measured at room temperature and 77 K, respectively. Transmission electron microscopy images were also obtained to confirm crystallography and size. Bulk lead selenide was simulated in WIEN2k utilizing the linear-augmented plane wave method of solving density functional theory to better understand the electronic structure of PbSe. The crystal structure, electron density, …

"Good To Think With": Women And Exempla In Four Medieval And Renaissance English Texts, Jennifer Fish Pastoor

Graduate Theses and Dissertations

This dissertation examines four English texts—Beowulf; Ancrene Wisse; Geoffrey Chaucer’s Canterbury Tales’ Man of Law’s Tale and Second Nun’s Tale; and Richard Hyrde’s English translation, The Instruction of a Christen Woman, of Juan Luis Vives’ De Institutione Feminae Christianae—in terms of their use of exempla related to women. These texts all find women good “to think with,” to use, from The Body and Society, Peter Brown’s appropriation of Levi-Strauss’s famous wordplay. The ways in which these Old English, Middle English, and modern English texts portray women’s lives and bodies as a gateway into thought about the Christian life are also …

How Select Groups Of Preservice Science Teachers With Inquiry Orientations View Teaching And Learning Science Through Inquiry, Peggy Diana Ward

Graduate Theses and Dissertations

Although hailed as a powerful form of instruction, in most teaching and learning contexts, inquiry-based instruction is fraught with ambiguous and conflicting definitions and descriptions. Yet little has been written about the experiences preservice science teacher have regarding their learning to teach science through inquiry. This project sought to understand how select preservice secondary science teachers enrolled in three UTeach programs in Arkansas conceptualize inquiry instruction and how they rationalize its value in a teaching and learning context. The three teacher education programs investigated in this study are adoption sites aligned with the UTeach Program in Austin, TX that distinguishes …

Optimal Sensing And Transmission In Energy Harvesting Sensor Networks, Xianwen Wu

Graduate Theses and Dissertations

Sensor networks equipped with energy harvesting (EH) devices have attracted great attentions recently. Compared with conventional sensor networks powered by batteries, the energy harvesting abilities of the sensor nodes make sustainable and environment-friendly sensor networks possible. However, the random, scarce and non-uniform energy supply features also necessitate a completely different approach to energy management.

A typical EH wireless sensor node consists of an EH module that converts ambient energy to electrical energy, which is stored in a rechargeable battery, and will be used to power the sensing and transmission operations of the sensor. Therefore, both sensing and transmission are subject …

Bioorthogonal Reactions: Synthesis And Evaluation Of Different Ligands In Copper Catalyzed Azide-Alkyne1,3-Dipolar Cycloaddition (Cuaac), Zainab Abdullah Almansaf

Graduate Theses and Dissertations

The Copper CatalyzedAzide-Alkyne1,3-Dipolar Cycloaddition (CuAAC) reaction has unique features that qualify it to be one of the best click reactions. Its applications have been shown in different aspects and for multiple purposes. The oxidative degradation of biological systems (labile proteins and live cells) is, however, generally recognized as the major problem when using this reaction in living systems. Reactive oxidation species can be easily produced in the presence of copper(II), ascorbate and air, and this is the main cause of toxicity. However, the uses of ligands have shown a major impact on reducing copper toxicity, protecting Cu(I) from the redox …

Extracellular Matrix Remodeling And The Inflammatory Response During Skeletal Muscle Regeneration In Sarcopenic Obese Mice, Lemuel Arthur Brown

Graduate Theses and Dissertations

AIM: Sarocpenic obesity is a national concern within the United States because this metabolic syndrome is tied with reduced mobility and quality of life. Both obesity and aging are associated with insulin-resistance, chronic low-grade inflammation and muscle weakness. Skeletal muscle regeneration is a process that involves the coordinated effort of myogenic regulatory factors (MRFs), inflammatory signaling, and extracellular matrix (ECM) remodeling for optimal regeneration. It has been demonstrated that obesity and aging have a reduction in muscle regeneration. It has not been examined if sarcopenic obesity will further reduce muscle mass and the regenerative process. The purpose of this study …

Apparel Design Process: Shifting The Basic Pattern Block Into A New Framework To Fit The Demands Of Post Double Mastectomy Women, Shan Gao

Graduate Theses and Dissertations

Breast cancer is a leading cancer among women today. Mastectomy is one of the most common paths for breast cancer prevention and treatment. However, this treatment path can cause noticeable body changes around the woman’s bust area. Recently more and more post mastectomy women are deciding to live without breast reconstruction surgery. This decision referred to as “going flat” or “living flat.” Due to the changed bodies and a lack of information on functional and aesthetic concerns related to clothing, clothing selection becomes difficult for post mastectomy women who choose to “live flat.”

The purpose of this study was to …

Eveleth, Minnesota: A Portrait Of My Home Town, Judith I. Luna

Graduate Theses and Dissertations

This 30-minute documentary film provides snapshots of the small northeastern iron mining town of Eveleth, Minnesota, on the Mesabi Iron Range. It uses a two-pronged approach: 1) a first-person return to the town by the filmmaker almost 50 years after graduating from high school to see how the town may have changed, 2) a look at some historical and cultural factors which made the town what it was when the filmmaker was growing up and what continues to animate the town in the face of iron mining’s decline and rebirth. The latter include the immigrant experience and influence as the …

Synthesis, Characterization, And Fabrication Of All Inorganic Quantum Dot Leds, Haider Baqer Salman

Graduate Theses and Dissertations

Quantum Dot LEDs with all inorganic materials are investigated in this thesis. The research was motivated by the potential disruptive technology of core shell quantum dots in lighting and display applications. These devices consisted of three main layers: hole transport layer (HTL), electron transport layer (ETL), and emissive layer where the emission of photons occurs. The latter part was formed of CdSe / ZnS core-shell quantum dots, which were synthesized following hot injection method. The ETL and the HTL were formed of zinc oxide nanocrystals and nickel oxide, respectively. Motivated by the low cost synthesis and deposition, NiO and ZnO …

Interactive Physics And Characteristics Of Photons And Photoelectrons In Hyperbranched Zinc Oxide Nanostructures, Garrett Edward Torix

Graduate Theses and Dissertations

As is commonly known, the world is full of technological wonders, where a multitude of electronic devices and instruments continuously help push the boundaries of scientific knowledge and discovery. These new devices and instruments of science must be utilized at peak efficiency in order to benefit humanity with the most advanced scientific knowledge. In order to attain this level of efficiency, the materials which make up these electronics, or possibly more important, the fundamental characteristics of these materials, must be fully understood. The following research attempted to uncover the properties and characteristics of a selected family of materials. Herein, zinc …

Perceptions Of Division I Athletic Director Career Paths, Eric A. Wood

Graduate Theses and Dissertations

There is increased information about the profile of current collegiate athletic directors as it relates to education, age, race, and gender. However, there is a gap in the knowledge of the career paths of the modern day Division I collegiate athletic director position compared to the athletic directors studied over 20 years ago. There is also a gap in the knowledge of the skills necessary to be an effective athletic director from the perspective of Division I athletic directors. The purpose of this study was to use the Perceptions of Division I Athletic Director Career Paths (PADCP) scale to determine …

Characteristics Of Lifelong Musicians, Austin Lamon Farnam

Graduate Theses and Dissertations

The purpose of this study was to investigate causes for lifelong musicianship through examining the life experiences and influences of ten lifelong musicians. The participants in this study have played music starting in their childhood and into adulthood. Ages of participants range between 35 and 60 years of age. All participants have separate careers in conjunction with being active musicians.

Data collection was attained through a three phase process of an observation, interview, and collection of artifacts. Data was coded using open, focused, and axial coding and further analyzed for the purpose of identifying emerging themes. From the analysis, the …

Optical Water Quality And Human Perceptions Of Rivers, Amie West

Graduate Theses and Dissertations

Understanding water quality dynamics in recreational rivers is integral in shaping management strategies that maintain ecosystem health, perceived value and appeal, and regional economic significance in a changing environment. Optical water quality describes the behavior of light in water as governed by its physical and chemical composition, and is among the strongest influences on human perceptions of water quality. Ethnohydrology is the study of culturally constructed knowledge and understanding of water. This work is the culmination of an interdisciplinary approach to water resources research—integrating optical water quality and ethnohydrology methods to recognize the intersection between measured water quality and visible …

Eucalyptus In Kenya; Impacts On Environment And Society, Brandy M. Garrett Kluthe

Graduate Theses and Dissertations

Eucalyptus trees were introduced to Kenya a little over a century ago. European colonization along with the development of a railway system increased the demand for a fast growing wood source. The expansion of the tree across the fertile lands in Kenya raises concerns about the environmental impact on ecosystems where it has been introduced. These concerns include degraded soils, loss of water resources, co-introduction of ectomycorrhizal species, and allelopathy. Economic benefits to local landowners were also explored as well as the potential for large Eucalyptus woodlots to maximize the sequestration of CO₂ from the atmosphere. This was examined through …

Electricity Generation, Electricity Consumption, And Energy Efficiency In The United States: A Dual Climatic-Behavioral Approach, Christopher A. Craig

Graduate Theses and Dissertations

Much of the United States (US) has seen an increase in warm days, decrease in cool days, and increase in extreme weather events. These trends are projected to continue across much of the US and in turn increase the demand for electricity and subsequent greenhouse gas emissions. Ambitious energy efficiency (EE) programs are used across the US by energy utility organizations to reduce electricity demand and emissions. This study examined the impact of climatic variability on electricity consumption, as well as how pro-conservation interventions such as EE programs and experiential learning can be utilized to mitigate residential electricity consumption and …

4d Printing Dielectric Elastomer Actuator Based Soft Robots, Jiyu Cai

Graduate Theses and Dissertations

4D printing is an emerging technology that prints 3D structural smart materials that can respond to external stimuli and change shape over time. 4D printing represents a major manufacturing paradigm shift from single-function static structures to dynamic structures with highly integrated functionalities. Direct printing of dynamic structures can provide great benefits (e.g., design freedom, low material cost) to a wide variety of applications, such as sensors and actuators, and robotics. Soft robotics is a new direction of robotics in which hard and rigid components are replaced by soft and flexible materials to mimic mechanisms that works in living creatures, which …

Educational Technology And Innovation Capacity In Arkansas Public Schools, Allie Nicole Taylor

Graduate Theses and Dissertations

We all have high hopes for our educational system. As they stress the need for 21st century learning, governments recognize the importance of innovation and creativity in schools and invest resources to develop learning environments that foster these qualities. This thesis adapts Crosling, Nair, and Vaithilingam’s (2015) model to provide a framework for studying factors that contribute to a creative learning ecosystem (intellectual capital development, 21st century literacies, climate for innovation, and integrity of the system), the quality of the educational system, and the system’s innovation capacity. A survey of 126 Arkansas high school teachers, indicates that two variables, student’s …

Effectiveness Of The Arkansas 4-H Atv Safety Training Course, Jesse Bocksnick

Graduate Theses and Dissertations

In response to popularity of ATVs in Arkansas and youth ATV accident rates, the Arkansas 4-H program established an ATV safety training program in 2008. The program has educated 1,500 youth in Arkansas about basic concepts of safe ATV operation in response to youth accident rates. The course covered proper equipment, laws, proper riding, and handling techniques. The program has not been evaluated. The study was to evaluate participants’ knowledge levels prior to participation in the program and after receiving instruction and hands-on ATV operation training, and to determine if Standard Course and S-Course participants’ knowledge scores were different. The …

Experiences Of Agricultural Education Preservice Teachers Engaging In Critical Friendships, Sable Sellick

Graduate Theses and Dissertations

Like educators in other disciplines, agricultural education preservice teachers must find ways to improve as teachers using methods such as reflection or peer observation. Critical friendship combines both, promoting reflection through the use of a critical friend who observes an individual’s teaching and provides constructive criticism to help the individual advance their practice. This qualitative study sought to use the critical friendship concept to assist agricultural education preservice teachers in reflecting on their teaching techniques. Participants were randomly assigned to one of two groups; one group selected a critical friend in agricultural education, and the other group selected a critical …

The Dirt On The Collins Mounds Site, Carmelita Angeles

Graduate Theses and Dissertations

Building monumental architecture has been one method used by humans to rise above an earthbound existence. In the United States, large earthen mounds were constructed from the Archaic period to the Mississippian period. The Collins Mound Site in Arkansas was recently dated to the Late Woodland period. For this study, soil samples were extracted from the northern section of the site for description and particle-size analysis. Erosion from plowing, wind, water, and gravity is the most likely process causing a decreased mound height and increased basal diameter. Mound fill likely originated near the river for two of the mounds and …

Negotiating The Politics Of Representation In Iranian Women’S Cinema Before And After The Islamic Revolution, Alshaatha Sultan Al Sharji

Graduate Theses and Dissertations

From Mahvash, the Iranian entertainer who sang and danced coquettishly in numerous Iranian films that were produced before the Islamic revolution of 1979, to the skateboarding vampire girl who makes a feast out of abusive men in Ana Lily Amirpour’s A Girl Walks Home Alone at Night, the representation of Iranian women on screen has changed drastically. This comparative study focuses on the politics of representation of Iranian women in the cinema before and after the Islamic revolution, with the aim of deconstructing the readily-available notions of women’s oppression in Iran. It analyzes the works of female Iranian directors Forough …

Preferred Leadership Communication Styles Across Cultures, Joy J. Cherfan

Graduate Theses and Dissertations

This thesis reports the results of a two-part study investigating preferred leadership communication styles across multiple cultural clusters. Utilizing a survey, part one identified the three most preferred leader communication styles (i.e., dominant, dramatic, contentious, attentive, animated, open, friendly, relaxed, impression leaving) in six cultural clusters. Using focus group data, the second part provides insight into subordinates’ perceptions of how these communication styles are enacted by leaders in each cluster. Guidelines on how to better communicate are offered to expatriates in hopes of helping them more successfully complete overseas tasks. Such guidelines are needed due to the high percentage of …

Characterization Of Histone Mutants Associated With Mitotic Defects In Saccharomyces Cerevisiae, Md Riajul Hossain

Graduate Theses and Dissertations

Nucleosomes, the basic unit and the building blocks of chromatin have an essential role in the tight packaging of DNA into higher order chromatin. Work from our lab and others have provided information on the contributions of different histone proteins and specific domains within the nucleosome made to create the centromeric chromatin structure required for normal chromosome segregation during mitosis. The DNA entry/exit site is a particular region of the nucleosome where histone H2A, H3 and H4 form critical interactions that appear to be essential for the association of Sgo1, a tension sensing protein that monitors kinetochore-microtubule attachment. In our …

Social Learning Remixed: Peer-Based Learning And Social Status In An Online Community Of Practice, Christopher Erin Mikkelson

Graduate Theses and Dissertations

People have engaged in peer-to-peer learning within communities of practice (CoPs) for centuries. Thanks to web 2.0 technology, people in the 21st century can now learn together and enact Social status even if they have never met face-to-face. Online communities of practice have since formed around a wide variety of activities, one of which is remixing. Remixing is defined as combining or editing existing materials to produce something new, but leaving each part recognizable as a separate entity. Remixing has recently been recognized as form of digital literacy because users must understand each component to make a good remix. Much …

Incorporating A New Class Of Uncertainty In Disaster Relief Logistics Planning, Emre Kirac

Graduate Theses and Dissertations

In recent years, there has been a growing interest among emergency managers in using Social data in disaster response planning. However, the trustworthiness and reliability of posted information are two of the most significant concerns, because much of the user-generated data is initially not verified. Therefore, a key tradeoff exists for emergency managers when considering whether to incorporate Social data in disaster planning efforts. By considering Social data, a larger number of needs can be identified in a shorter amount of time, potentially enabling a faster response and satisfying a class of demand that might not otherwise be discovered. However, …

Beer For Brohood: A Laboratory Simulation Of Masculinity Confirmation Through Alcohol Use Behaviors In Men, Jessica Lauren Fugitt

Graduate Theses and Dissertations

Alcohol use is a widespread behavior that may be associated with negative consequences, especially for men. Research suggests that individuals are motivated to maintain in-group status by engaging in behaviors prototypical of the in-group when group status has been challenged, and that men are particularly likely to do this when masculine in-group status is threatened. This study investigated masculine drinking behaviors through Social and individual lenses, examining the impact of group identification and individual differences on alcohol consumption rates after a simulated gender threatening situation in a bar laboratory. Sixty-five male students (ages 21-29; 74% Caucasian) were given the chance …

Heparin-Peptide Interactions, Jacqueline Anastasia Morris

Graduate Theses and Dissertations

Heparin is a polydispersed sulfated molecule that is part of the family called glycosaminoglycans found in the extracellular matrix and cell surfaces. This molecule is extremely important for the activation of proteins and protein-receptor interactions that are responsible for downstream cell signaling pathways. Heparin has been isolated from porcine intestine and used as an anticoagulant for the prevention of embolisms, heart thrombosis, and clotting during heart surgeries. This so-called miracle drug was in use until 2008, when isolated batches were found to be contaminated with other glycosaminoglycans similar to heparin. From 2008, there has been a dire need for a …

Proposed Treatment Of Problematic Pornography Use: A Cognitive-Behavioral Approach, Jennifer Minarcik

Graduate Theses and Dissertations

As pornography use increases across the general population, mental health professionals are encountering more patients who present symptoms of sexual addictions and sexual compulsivity (Cooper et al., 2001). Never before have pornographic materials been so accessible to consumers. Viewing pornography is related to many negative consequences for the individual, including impairment of academic and professional functioning, subjective distress, and sexual compulsivity (Cooper et al., 1999a; Manning, 2006). Studies found pornography use by an individual typically leads to a decline in relationship and sexual satisfaction (Bridges, 2008a). Despite the growth in research related to problematic pornography use, to date there have …