Digital Commons Network^™

Queue Stability Analysis In Network Coded Wireless Multicast., Nadieh Mohamadi-Moghadam

Electronic Theses and Dissertations

In this dissertation queue stability in wireless multicast networks with packet erasure channels is studied. Our focus is on optimizing packet scheduling so as to maximize throughput. Specifically, new queuing strategies consisting of several sub-queues are introduced, where all newly arrived packets are first stored in the main sub-queue on a first-come-first-served basis. Using the receiver feedback, the transmitter combines packets from different sub-queues for transmission. Our objective is to maximize the input rate under the queue stability constraints. Two packet scheduling and encoding algorithms have been developed. First, the optimization problem is formulated as a linear programming (LP) problem, …

Highly Student-Rated Teachers Of Multicultural Classrooms : A Qualitative Study Of Teacher Practices., Rose M. Glasser

Electronic Theses and Dissertations

In this study, I selected three mathematics teachers teaching in multicultural classes who were highly rated by their students. I examined these teachers’ practices in relation to multicultural instructional practices, language and critical knowledge. The participants were two secondary mathematics teachers, and one middle mathematics teacher who exclusively taught English learners who had lived in the United States for less than two years. Some of their students were considered Significantly Interrupted or limited Formal Education. The teachers, Marlon, Yasin and Abigail were from Cuba, Turkey and the United States, respectively. Using recommendations from Yin (2014), I employed multiple-case, qualitative methodology …

Since The Time Of Eve : La Leche League And Communities Of Mothers Throughout History., Joanna Paxton Federico

Electronic Theses and Dissertations

La Leche League International (LLL) is the oldest and largest breastfeeding support group in the world. This thesis examines how, beginning in 1956, seven Catholic housewives from suburban Chicago built up the institutional knowledge to sustain a cohesive global network of breastfeeding mothers. It also explores how LLL managed this knowledge over time in response to developments in scholarship and changing social conditions. Based on a narrative analysis of LLL publications, this thesis argues that the League’s founders drew selectively from existing bodies of knowledge and from their own cultural perspectives to establish a sense of community among breastfeeding women. …

Deficiency Of Rdh10 Causes Cleft Secondary Palate In Mouse., Swetha Raja

Electronic Theses and Dissertations

The focus of this project is to understand the role of Retinoic Acid (RA) produced by RDH10-mediated metabolism of Vitamin A in palate development. For 80 years now, we have known that dietary restriction of RA/Vitamin A can cause cleft palate but we have failed to understand how RA deficiency causes cleft palate. Our gap in knowledge about how RA deficiency causes cleft palate is mainly owing to the fact that we lack a model system to study such defects. The aim of this thesis research project was to determine if conditional inactivation of the Vitamin A metabolic gene Rdh10 …

Type Ix Secretion System: Characterization Of An Effector Protein And An Insight Into The Role Of C-Terminal Domain Dimeration In Outer Membrane Translocation., Lahari Koneru

Electronic Theses and Dissertations

Porphyromonas gingivalis and Tannerella forsythia are two of the primary pathogens that are associated in the etiology and progression of chronic periodontitis. In T. forsythia, KLIKK proteases are the recently identified group of proteolytic enzymes that are secreted through Type IX secretion system (T9SS). Among, these KLIKK proteases a synergistic relationship was observed between karilysin and mirolysin in invading the host complement system for the survival of the bacteria. Since, karilysin has been already characterized, in this study we propose to study about mirolysin through structural, biochemical and biological characterization. The obtained results from the experiments has shown the …

Moving Mountains : A Study Examining Long-Term Impacts Of Mountaintop Removal Coal Mining On Mortality In The Appalachian Region Using Geographic Information Sciences Techniques., James Howard Kent Pugh

Electronic Theses and Dissertations

Over the last hundred years, the Appalachian region has been dominated by the coal industry. It has also been and currently is one of the unhealthiest regions in the United States. Recent scholarship has examined the relationship between coal mining and health and mortality rates in the Appalachian region. The first study incorporates air quality and pollution data to examine if coal mining counties have higher levels of pollution and if this pollution contributes to mortality disadvantage. In the second study, I construct a population-based coal-exposure measure to better evaluate the relationship between coal mining and health I find that …

The Feelings We Harbor - The Role Of Collage In Arousing Powerful Emotions In An Esl Classroom., Irina V. Mcgrath

Electronic Theses and Dissertations

Traditional literacy education in the U.S. relies exclusively on language-based models. This can be particularly challenging for English language learners, who often find themselves bound by the constraints of the English language and limited in their expressions of thought and emotion. Current research on English language teaching, largely targeted towards native English-speaking students, suggests that incorporating various alternate modes of communication and representation improves literacy learning. Studies that address English language learning for non-native speakers are sparse. The purpose of this arts-based, qualitative, descriptive study is to fill this gap in the literature. Using collage making as a communicative mode, …

The Otaku Phenomenon : Pop Culture, Fandom, And Religiosity In Contemporary Japan., Kendra Nicole Sheehan

Electronic Theses and Dissertations

The focus of this dissertation centers on the otaku subculture and their subsequent incorporation of Japanese religious elements into their consumption of Japanese popular culture. This phenomenon highlights the intersections of popular culture and religion in Japan, which is emerging in religious sites. Shintō shrines and Buddhist temples are incorporating popular culture as a means to maintain relevancy, encourage growth of parishioners, and raising revenue by capitalizing on the popularity of manga and anime. The relevance of this research connects to the continued impact of Japanese popular culture through globalization. The first chapter provides a theoretical background examining this socio-religious …

Sample Size Calculations And Normalization Methods For Rna-Seq Data., Xiaohong Li

Electronic Theses and Dissertations

High-throughput RNA sequencing (RNA-seq) has become the preferred choice for transcriptomics and gene expression studies. With the rapid growth of RNA-seq applications, sample size calculation methods for RNA-seq experiment design and data normalization methods for DEG analysis are important issues to be explored and discussed. The underlying theme of this dissertation is to develop novel sample size calculation methods in RNA-seq experiment design using test statistics. I have also proposed two novel normalization methods for analysis of RNA-seq data. In chapter one, I present the test statistical methods including Wald’s test, log-transformed Wald’s test and likelihood ratio test statistics for …

Southern Veils : The Sisters Of Loretto In Early National Kentucky., Hannah O'Daniel

Electronic Theses and Dissertations

This thesis analyzes the experiences of Roman Catholic women who joined the Sisters of Loretto, a community of women religious in rural Washington and Nelson Counties, Kentucky, between the 1790s and 1826. It argues that the Sisters of Loretto used faith to interpret and respond to unfolding events in the early nation. The women sought to combat moral slippage and restore providential favor in the face of local Catholic institutional instability, global Protestant evangelical movements, war and economic crisis, and a tuberculosis outbreak. The Lorettines faced financial, social, and cultural pressures—including an economic depression, a culture that celebrated family formation …

Culturally Relevant Teachers : A Critical Beacon In The Educational Standards Movement., Angela Pleasant

Electronic Theses and Dissertations

The purpose of this study was to describe culturally relevant teachers’ beliefs and teaching practices as they implement the Reading CCSS. It was hypothesized that by exploring the beliefs and practices of teachers who practice a culturally relevant pedagogy, this research could provide evidence of the specific and identifiable practices that demonstrated high expectations, culturally competency, and critical consciousness. This research could provide evidence of effective strategies, which could be used to impact the literacy achievement of students of color while the teacher implements the Reading Common Core State Standards or any standards movement that follows. A qualitative case study …

A Risky Business : Examining The Prevalence And Correlates Of Post Traumatic Stress Disorder Symptomology And Social Support In Kentucky's Adult Correctional Staff., Ashley Terrell French

Electronic Theses and Dissertations

The purpose of this study was to determine the prevalence and correlates of post traumatic stress disorder (PTSD) symptomology among correctional staff, using a sample of staff who work in an adult facility for the Kentucky Department of Corrections (KY DOC). Participants (N=775) were asked to complete a written survey to indicate not only demographic variables (age, race, education, and gender) but also the amount of violent and traumatic events experienced, the duration of employment within the KY DOC, whether they were assigned to a custodial/security role, and whether they worked in a maximum security facility. Furthermore, their perceived level …

Factors Associated With Federal Student Loan Default Among Borrowers In A Statewide System Of Community And Technical Colleges., Brittany Inge

Electronic Theses and Dissertations

Community colleges serve as a gateway to higher education for millions of American college students. Open-door admission policies and federal student aid facilitate the access that two-year public institutions provide, particularly for students who are under-resourced or academically under-prepared for college. However, a substantial number of community college students who use federal student loans to pay for college ultimately fail to repay the loans, yielding negative consequences for borrowers, institutions, and taxpayers.

By employing a Hierarchical Generalized Linear Model (HGLM) this study investigates individual-level and institution-level factors associated with federal student loan default among borrowers who attended a two-year public …

Control Of Power Electronic Interfaces In Distributed Generation., Mohammad Mohebbi

Electronic Theses and Dissertations

Renewable energy has gained popularity as an alternative resource for electric power generation. As such, Distributed Generation (DG) is expected to open new horizons to electric power generation. Most renewable energy sources cannot be connected to the load directly. Integration of the renewable energy sources with the load has brought new challenges in terms of the system’s stability, voltage regulation and power quality issues. For example, the output power, voltage and frequency of an example wind turbine depend on the wind speed, which fluctuate over time and cannot be forecasted accurately. At the same time, the nonlinearity of residential electrical …

Artificial Olfactory System For Multi-Component Analysis Of Gas Mixtures., Alexander Aleksandrovich Larin

Electronic Theses and Dissertations

Gas analysis is an important part of our world and gas sensing technology is becoming more essential for various aspects of our life. A novel approach for gas mixture analysis by using portable gas chromatography in combination with an array of highly integrated and selective metal oxide (MOX) sensors has been studied. We developed a system with small size (7 x 13 x 16 inches), low power consumption (~10 W) and absence of special carrier gases designed for portable field analysis (assuming apriori calibration). Low ppb and even sub-ppb level of detection for some VOCs was achieved during the analysis …

Testing And Modeling Of The Thixotropic Behavior Of Cementitious Materials., Bashir Hasanzadeh

Electronic Theses and Dissertations

During construction, concrete goes under various operations. It is normally transported to the job site, be placed and consolidated in the formwork, etc. The easiness and quality of these operations are very much related to the intrinsic rheological properties of concrete. Therefore, a good understanding of rheological behavior of concrete under various conditions are needed. Thixotropy is an important part of rheology. The thixotropic behaviors of concrete can be good representatives of its flow behaviors on the job site. For example, the breakdown aspect of thixotropy can help to explain how its flow behavior can impact concrete pumping and its …

Self-Management As A Mediator Of The Relationship Between Social Support And Health Outcomes Of African American Adults With Type 2 Diabetes., Tariq N. Al-Dwaikat

Electronic Theses and Dissertations

Type 2 diabetes (T2D) is often associated with serious complications. African American adults have higher rates of diabetes-related complications than other ethnicities. Diabetes self-management reduces the risk of developing biological and psychological symptoms. Social support promotes positive behavior change and self-management that leads to improved biobehavioral and psychosocial outcomes. Few studies explored the relationship between social support dimensions and self-management behaviors, diabetes biomarkers, and psychosocial outcomes of African American adults with T2D. The purpose of this dissertation was to examine the relationships of various dimensions of social support with self-management behaviors and diabetes biomarkers and psychosocial outcomes of African American …

The Knowledge Economy : Increasing Human Capital On The U.S. I-65 Corridor., Brandon S. Mcreynolds

Electronic Theses and Dissertations

In economics, the term growth often refers to the increase in economic activity between two points in time. Within the context of the United States of America, the language of growth has permeated beyond just economics and into other societal institutions due to spillover. As a result, growth is not just an economic term but rather a part of the culture of capitalism which impacts every area of society. The dissertation using growth machine theory and the global cities literature examines how in the knowledge economy, cities play a growing role in mediating the supply and demand for …

Russian Foreign Policy And National Identity, Monica Hanson-Green

Senior Honors Theses

National identity provides the interpretive framework through which foreign policy makers understand their role in the world and the actions of other states, and can also be utilized as a tool to mobilize public support behind foreign policy maneuvers. Foreign policy in turn is both shaped by constructions of national identity, and often used to forge and substantiate the narratives of national identity which best serve the regime’s domestic interests. This thesis will seek to establish the mutually constitutive relationship between national identity and foreign policy through an analysis of the interaction of these elements in the Russian Federation under …

“They All Write About Some Woman In Their Poetry”: The Heroines Of Ulysses And As I Lay Dying, Elizabeth O'Malley

Senior Honors Theses

No abstract provided.

Music Students, Faculty Stand Out At Regional Competition, Anna Herd

University of Mississippi News

UM well-represented in final rounds of the National Associate of Teachers of Singing event

Molecular Geometries And Other Properties Of H2o⋯Agi And H3n⋯Agi As Characterised By Rotational Spectroscopy And Ab Initio Calculations, Chris Medcraft, Eva Gougoula, Dror M. Bittner, John C. Mullaney, Susana Blanco, David P. Tew, Nicholas R. Walker, Anthony C. Legon

Chemistry & Biochemistry Faculty Publications

The rotational spectra of H₃N⋯AgI and H₂O⋯AgI have been recorded between 6.5 and 18.5 GHz by chirped-pulse Fourier-transform microwave spectroscopy. The complexes were generated through laser vaporisation of a solid target of silver or silver iodide in the presence of an argon gas pulse containing a low concentration of the Lewis base. The gaseous sample subsequently undergoes supersonic expansion which results in cooling of rotational and vibrational motions such that weakly bound complexes can form within the expanding gas jet. Spectroscopic parameters have been determined for eight isotopologues of H₃N⋯AgI and six isotopologues of …

Cnl As Educator: Justifying The Need For A Certified Diabetes Educator On The Medical Surgical/Telemetry Unit, Livneet K. Takhar

Master's Projects and Capstones

Abstract

This improvement project aims to justify the need for a certified diabetes educator (CDE) on the medical surgical/telemetry unit of a rural community hospital. A microsystem and gap analysis indicates lack of comprehensive, efficient and effective diabetes care education. The clinical nurse leader (CNL) conducted a learning needs assessment and pilot education project to integrate tasks of a CDE into the microsystem. Patients participated if they spoke English as their native language, met the criteria of a new diagnosis of diabetes, uncontrolled blood sugars, or hemoglobin A1C of 6.5% or higher. Thirty-minute education sessions were provided to twenty patients …

Neutrosophic Hough Transform, Florentin Smarandache, Umit Budak, Yanhui Guo, Abdulkadir Sengur

Branch Mathematics and Statistics Faculty and Staff Publications

Hough transform (HT) is a useful tool for both pattern recognition and image processing communities. In the view of pattern recognition, it can extract unique features for description of various shapes, such as lines, circles, ellipses, and etc. In the view of image processing, a dozen of applications can be handled with HT, such as lane detection for autonomous cars, blood cell detection in microscope images, and so on. As HT is a straight forward shape detector in a given image, its shape detection ability is low in noisy images. To alleviate its weakness on noisy images and improve its …

The Impact Of Groundwater And Well Characteristics On Irrigator Energy Contract Choice, Taylor Hackbart

Department of Agricultural Economics: Dissertations, Theses, and Student Research

The thesis uses cross sectional data from the year 2009 to analyze irrigator choice of electricity contract. The data includes irrigators from the Midwest Electric Cooperative Corporation (MECC), which covers portions of three of Nebraska’s Natural Resource Districts (the Middle Republican, Twin Platte, and Upper Republican NRDs). Each of these institutions tries to reduce the pressure its users place on limited natural resources.

To accomplish this the MECC has established interruptible contracts with irrigators. These contracts allow the MECC to control the electricity supply for an irrigator’s well for a pre-determined number of days, which allows it to better manage …

Sulfur Isotope Variations In The Elk Creek Carbonatite Complex, Southeastern Nebraska, Usa, Emily Campbell

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

The Elk Creek Carbonatite Complex (ECCC) comprises eight different units of carbonatite and silicate rocks, including a magnetite-dolomite carbonatite that hosts the largest niobium deposit in the United States. This study focused on interpreting the first set of sulfur isotopes from this system to decipher between magmatic and secondary processes. Using sulfur isotope variations I was able to discriminate between hypogene and supergene mineralization, and measure (1) formation temperatures (2) possible sulfur source (3) degassing effects on isotopic composition, and (4) post-magmatic alteration. The groundwork for mapping and interpreting iron oxide alteration is also laid out in this thesis.

Hypogene …

Latent Interaction Modeling With Planned Missing Data Designs, Jayden Nord

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Planned missing data (PMD) designs allow researchers to collect additional data under time constraints, which likely occur in educational research settings. The imposed missing data patterns, however, can hamper the efficiency of statistical models that are of interest to substantive researchers. Typically, PMD designs result in a modest power deficiency; however, this tenet has not been extended to latent interaction models. Such models are of increasing importance as researchers investigate moderated relationships involving continuous latent variables. Monte Carlo simulations were used to assess the efficacy of various latent interaction estimation methods under PMD designs.

Advisor: James A. Bovaird

Spirituality Among Black Americans: A Hierarchical Classification Of The Family Strengths Model, Genese Clark

College of Education and Human Sciences: Dissertations, Theses, and Student Research

There is a need for disaggregate data pertaining to the perceived strengths of Black American families. This study identified which traits are salient and dominant among African-American families according to the Family Strengths Model. Utilizing this model, a mixed methods study was conducted among Black Americans living in Connecticut who identify with belonging to a family (N=59) to investigate the importance of six family strength domains. Results found the hierarchical rank (from most important to least important) to be commitment, spirituality/ spiritual wellbeing, appreciation and affection, positive communication, time together, and the ability to manage stress and crisis effectively. Additionally, …

The Influence Of Previous Subject Experience On Interactions During Peer Instruction In An Introductory Physics Course: A Mixed Methods Analysis, Judy A. Vondruska

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Over the past decade, peer instruction and the introduction of student response systems has provided a means of improving student engagement and achievement in large-lecture settings. While the nature of the student discourse occurring during peer instruction is less understood, existing studies have shown student ideas about the subject, extraneous cues, and confidence level appear to matter in the student-student discourse. Using a mixed methods research design, this study examined the influence of previous subject experience on peer instruction in an introductory, one-semester Survey of Physics course. Quantitative results indicated students in discussion pairs where both had previous subject experience …

Examining The Relationships Between Prenatal Tobacco Exposure, Temperament, And Cognitive Ability In Early Childhood, Sam Pérez-González

College of Education and Human Sciences: Dissertations, Theses, and Student Research

Prenatal tobacco exposure (PTE) has been extensively researched and consistently associated with outcomes indicative of self-regulation deficits (e.g., ADHD, behavioral problems, and impaired cognitive function). Self-regulation is a multifaceted construct critical to children’s successful behavioral, emotional, and academic adjustment and involves the integration of a cognitive component (executive function) and a temperamental component (effortful control). Previous research suggests temperament may be a pathway through which PTE affects children’s future behavior and cognitive outcomes, but such studies have been limited to infancy and have not included measures of executive function. Thus, the current study had three aims: a) to examine clusters …