Digital Commons Network^™

A Discourse Analysis Of Student-To-Student Conversations In A Secondary School Physical Science Laboratory Setting, Jennifer Faith Oramous

Graduate Theses and Dissertations

This qualitative grounded theory study applies Discourse Analysis (DA) to focus on the student-to-student (SS) “productive conversation” occurring within groups engaged in several activities in a physical science laboratory with a goal to identify aspects and patterns of such conversation. In this study, Student-to-Student Productive Talk (SSPT) stated in relation to the accepted definitions of classroom productive talk. SSPT is on-topic discussion between students that meet the requirements of productive conversation such as visible thinking and argumentation. The form of analysis applied in this study was derived from Classroom Discourse Analysis by Cazden (2001), Gee (2014a; 2014b), and Rymes (2016). …

Racialized Reality: Crime News And Racial Stereotype Framing, Warrington Sebree

Graduate Theses and Dissertations

Research shows that crime news is a primary mechanism for shaping public consciousness surrounding legal order, social morality, and threats present in their citizens communities. This research explores how news media influences negative attitudes towards criminal justice reform and Black identity. Utilizing Framing Theory, this study focuses on whether negative stereotypes in crime news triggers racial prejudice and bias towards African Americans. Participants of this study will consist of current students at the University of Arkansas, Fayetteville. The findings suggest that knowing the race of a potential criminal assailant influences respondents’ attitudes towards presumptions of guilt, future criminality, and criminal …

Racial Terror Lynching In Northwest Arkansas: Recounting Of The Story Of Three Enslaved Males Lynched In 1856 In Washington County - Documentary, Obed Lamy

Graduate Theses and Dissertations

While Northwest Arkansas is considered as diverse and progressive today, it also shares a common history of racial violence, and yet almost unknown, with the Southern United-States. Little is being said about the slave plantations in Elkins, racial cleansing in Springdale, or public spectacle lynchings in Fayetteville. This is because white people who hold political and economic power also control how history is written and decide what is to be learned from their perspectives. Marginalized communities, especially Black people, have not always had agency to tell their own stories. The lynchings of three enslaved males, Anthony, Aaron, and Randall, in …

Analysis Of Photodetector Based On Zinc Oxide And Cesium Lead Bromide Heterostructure With Interdigital Metallization, Tanveer Ahmed Siddique

Graduate Theses and Dissertations

In this thesis, photodetector based on the zinc oxide and cesium lead bromide hetero structure were fabricated and characterized. Zinc oxide (ZnO) nanoparticles were synthesized using solution processing and cesium lead bromide (CsPbBr3) thin film was synthesized using two step deposition method. Three phonon modes were obtained by the Raman spectroscopy of ZnO nanoparticles. X-ray diffraction spectra of ZnO exhibits five exciton peaks which denotes that the synthesized ZnO structure was of good crystallinity with wurtzite hexagonal phase. The absorbance spectrum of ZnO shows the bandgap (Eg) in the order of 3.5 eV that aligns with reported results. The photoluminescence …

New Normal: How School Operation And Learning Changes In A Pandemic, Margaretha Audrey Stefani Cahya

Graduate Theses and Dissertations

According to past and present studies, pandemics impacted many aspects of society, including education. The current COVID-19 pandemic, which lasted for more than a year during the study, has brought notable educational changes at every level of education. This research was conducted to explore the extent of educational changes during a pandemic and the deviation between the education plan and its implementation in Northwest Arkansas public school districts. The study's data was collected from school district public documents and teacher interviews from school districts classified as low to high SES in suburban and rural areas. Both sources were analyzed and …

Evaluation Of Irrigation And Nutrient Management Strategies In Rice Using Alternative Irrigation Methods, Justin Lee Chlapecka

Graduate Theses and Dissertations

As water resources gain value across the Mid-South, alternative irrigation strategies of rice (Oryza sativa L.) have garnered increasing attention. In 2015, an estimated 1.7% of Arkansas rice hectarage used alternate wetting and drying (AWD) irrigation and 0.9% used furrow irrigation. As of 2020, 2.5% used AWD and 16.9% used furrow irrigation, the latter accounting for near 99,000 ha in Arkansas. Little information exists in the scientific literature in relation to management of rice grown in the Mid-South without a conventional flood. This fact coupled with the rapid adoption rate, especially for furrow-irrigated rice (FIR), during the last five years …

Description Of Job Embeddedness In Arkansas County Extension Agents, Anika Parks

Graduate Theses and Dissertations

The Cooperative Extension System (CES) has had a long-standing problem with the retention of its county Extension agents (CEAs), who are in charge of running various programs in over 3,000 counties within the United States. When a CEA leaves a county, voluntarily or involuntarily, the community members are left without that leader, and their needs go unmet, which was proposed to increase voluntary turnover among CEAs even further. Arkansas CES has had its problems with turnover, and studying this issue through the lens of Job Embeddedness Theory was identified as a gap in the literature.

Job Embeddedness Theory is a …

Pathogenicity Of Staphylococcus Agnetis Associated With Lame Broilers With Osteomyelitis, Sura Faris Salih Zaki

Graduate Theses and Dissertations

We developed High Resolution Melt Analysis (HERMA) as a rapid and reliable molecular diagnostic assay for the detection and identification of the main bacterial species recovered from the blood and lesions of bacterial chondronecrosis with osteomyelitis (BCO) from the lame broilers at the University of Arkansas poultry research farm. Also, the present study confirms that raising young birds on suspended wire flooring has been proved to successfully induce lameness attributable to BCO with birds being more susceptible to bacteraemia than those that were raised on litter flooring. The newly described pathogen, Staphylococcus agnetis, has been reported to be overrepresented in …

Mvskoke-Nene Momis Komet Yvkvpvkkeyetos/We Keep Walking The Mvskoke Path: A Reflexive And Phenomenological Ethnographic Study Of The Ceremonial Beliefs And Practices Of A Modern Mvskoke Community In Florida, Christopher B. Bolfing

Graduate Theses and Dissertations

This dissertation is an ethnographic investigation of the intersection between cosmology, worldview, ethnoecology, and traditional religious performance, particularly in terms of the relationship between subjective experience and intersubjectivity. It is a study of how people come to understand the world – an attempt to understand understanding. I explore the acquisition of social, cultural, and ecological knowledge through participation in the traditional religious ceremonialism of a Mvskoke ceremonial community, called the Busk. I write about living people and living religious traditions, but I am also a member of this community and, therefore, I am also telling my own story. Reflexivity, then, …

Methods And Effects Of Shadowing Using Online Authentic Videos On L2 Acquisition Of Mandarin Chinese Tones, Ai-Ling Lu

Graduate Theses and Dissertations

Mandarin Chinese tones are notoriously difficult for second language (L2) learners. Previous research focuses on tone training methods that can help learners produce monosyllabic lexical tones, and studies about the production of multisyllabic lexical tones at the sentence level in spontaneous speech are limited. This study applies shadowing—a method where the learners repeat what they heard with as little delay as possible—to tone training and compares the effects of using authentic videos and textbook audios as shadowing materials for beginner L2 Mandarin learners’ tone improvement at the sentence level. Fourteen students in elementary Chinese classes at an American university participated …

Investigating The Role Of Social Capital And Everyday Communication In Campus Community Resilience During The Covid-19 Pandemic, Kaleb A. Turner

Graduate Theses and Dissertations

This thesis investigated the role of social capital and everyday communication in campus community resilience capacities during the COVID-19 pandemic. This study conceptualized the university community as a micro-community that experienced sharp disruption as a result of the COVID-19 pandemic. In the same way that traditionally conceptualized communities harness communication to build resilience, this study provides evidence that micro-communities, such as the university campus, have the same potential. Focus groups with students, faculty, and staff, as well as one-on-one semi-structured interviews with students, resulted in 557 pages of single-spaced transcripts that provided rich data to understand this community resilience context. …

Understanding Gender Gaps In Student Achievement And Stem Majors: The Role Of Student Effort, Test Structure, Self-Perceived Ability, And Parental Occupation, Lina Anaya Beltran

Graduate Theses and Dissertations

Increasing women’s participation in Science, Technology, Engineering, and Mathematics (STEM) has become a policy goal for many countries. This dissertation focuses on the origin and measurement of gender gaps in student achievement and self-perceived ability, as well as their potential role in predicting college career choices in STEM.

The first two chapters provide an international overview of gender achievement gaps and focus on issues around measurement using data from the Programme for International Student Assessment (PISA). These chapters study the role of student effort in predicting gender gaps in achievement and whether or not test structure, defined as question difficulty …

Identifying Effective Teaching And Recruitment Strategies Used By Efnep In Reaching Limited Income Audiences In The United States, Alexandria Mcleod

Graduate Theses and Dissertations

The two articles presented in this thesis used a researcher-developed literature-based survey instrument to collect data on the Expanded Food and Nutrition Education Program (EFNEP) in the United States. Data was collected on methods of teaching, communication technologies used, recruitment strategies, barriers to attending classes, and program assistant demographic data. There were 803 program assistants working during the 2018-2019 program year. There were 346 program assistants who completed the 35-question survey instrument during data collection.

The first article focused on identifying effective teaching strategies used to increase program engagement by collecting data on program characteristics, methods of teaching, and educational …

Economic Feasibility Of Sub-Surfaced Poultry Litter, James Timothy Stults

Graduate Theses and Dissertations

Livestock producers routinely spread fertilizer or broadcast poultry litter to improve forage production. With poultry litter widely available across the Southeastern United States and a cheaper source of plant nutrition than fertilizer when proximal to application sites, the novel application of litter below the soil surface, while costly, allows for greater nutrient retention than broadcasting. Since quantifying costs and benefits of sub-surface litter application (SSLA) is complex, we develop and present a spreadsheet tool for automated comparison between SSLA, fertilizer, and broadcasted litter for user-specific scenarios involving equipment choices (new, used, custom), desired nutrient needs for crops grown, litter nutrient …

Climate Change Frames And Emotional Responses On Reddit, Isabel Iruani Villanueva

Graduate Theses and Dissertations

Climate change remains a highly polarized topic in the United States. Research suggests that the divide in climate change beliefs is partly a result of news media’s representation of select aspects of the problem, or framing. Frames influence individuals’ attitudes, emotions, and behaviors towards climate change. Overwhelming representation of certain climate change frames has led to a lack of emotional connection to the issue, resulting in inaction or dismissal. Climate change researchers have investigated the presence and effects of frames on both news media and select social media sites, particularly Twitter. However, little research has investigated the climate change conversation …

Caring Against The Carceral: How Families Mediate The Social Death Of Incarceration, Jessica Claire

Graduate Theses and Dissertations

Incarceration, especially in the United States, is deeply related to issues of racism, poverty, and citizenship. These particular experiences are the result of a history of biopolitical control affecting Black and brown communities and have a quintessential origin in enslavement. Those who are incarcerated are isolated, dishonored, and powerless as a result of the criminalization of race and poverty. These observations led to questions surrounding the particular impact families may have on the experiences of those who are incarcerated. Families of Incarcerated Loved ones, or FOILs, mediate incarceration through intentional socialization which has the potential to counteract the realities of …

Biochemical Characterization Of Small Molecule Inhibitor Binding On A Ras Related Gtpase And Its Effector Interactions, Djamali Muhoza

Graduate Theses and Dissertations

The Ras superfamily of GTPases has 167 proteins that are involved in various cellular processes such as proliferation, transformation, migration, and inhibition of cell death. Mutations, abnormal expression, and function of these proteins are observed in many diseases, including several forms of cancer. Even though these GTPases were among the first discovered oncogenes, no successful Ras drug candidate has successfully passed clinical trials. Drugs targeting these proteins have failed mainly because of the complexity of their regulation, their high affinity to GTP, and their structure’s dynamic nature. Recently, novel promising targeting approaches have renewed interest in the Ras drug discovery …

Examining The Demographic And Situational Characteristics That Predict News-Media Coverage Of Bias Homicides:, Caitlin Tidwell

Graduate Theses and Dissertations

Recent trends indicate that incidents of hate crime have become increasingly more violent since 2017, resulting in an overall increase in incidents of bias homicide specifically. Knowledge of bias crime among the general public largely derives from news media sources and, unfortunately, research that illustrates how the media covers and/or portrays bias crime incidents remains underdeveloped. Using theories of strategic news making, the current study examines the types of bias homicide incidents that receive media coverage by constructing a unique database of newspaper articles from prominent, national papers for 216 bias homicides that occurred between 2000 and 2019 drawn from …

Integrating Systems, Processes, And Human Judgment: Three Essays On Value Creation With Supply Chain Analytics, Rebekah Inez Brau

Graduate Theses and Dissertations

Big-data, analytics, automation, and machine learning are changing the role of managers in supply chain and operations functions. Extant research indicates that effective value creation by analytics is achieved through careful attention to three components: technology, people, and processes. As such, the purpose of my dissertation is to improve the integration of people in current supply chain and operations management systems with ever-changing technologies and processes. I focus on one critical function—demand planning—since it is increasingly influenced by predictive analytics yet can still require human judgment. My dissertation is comprised of three essays as follow.

In Essay 1, I implement …

An 8-Bit Analog-To-Digital Converter For Battery Operated Wireless Sensor Nodes, Marvin Wayne Suggs Jr.

Graduate Theses and Dissertations

Wireless sensing networks (WSNs) collect analog information transduced into the form of a voltage or current. This data is typically converted into a digital representation of the value and transmitted wirelessly using various modulation techniques. As the available power and size is limited for wireless sensor nodes in many applications, a medium resolution Analog-to-Digital Converter (ADC) is proposed to convert a sensed voltage with moderate speeds to lower power consumption. Specifications also include a rail-to-rail input range and minimized errors associated with offset, gain, differential nonlinearity, and integral nonlinearity. To achieve these specifications, an 8-bit successive approximation register ADC is …

Singing And Pronunciation: A Review Of The Literature, Kassidy Joyner

Graduate Theses and Dissertations

Observed differences exist in the pronunciation abilities of individual language learners, especially adult learners. Musical ability and experience are possible factors that have been attributed to language pronunciation abilities. Although there has been a large amount of research concerning the effects of general musical ability and training on language abilities, very few studies have investigated the musical sub-category of singing. Research on the use of songs in the language classroom has largely tested the effects of song on vocabulary acquisition, while very few studies have explored the effects of song on pronunciation. Given that singing and pronunciation both use similar …

Digital Marketing And The Culture Industry: The Ethics Of Big Data, Jonathan Michael Bowman

Graduate Theses and Dissertations

Instead of the steady march of the one percent growth in ecommerce as compared to total retail revenues in the last decade (to comprise about nine percent of the industry at the close of 2019), we have witnessed leaps now to over twenty percent in just the last year. Scott Galloway marks the pandemic as an accelerant not just of digital marketing posting a year of growth for each month of quarantine but as an accelerant of each major GAFA (Google, Amazon, Facebook, and Apple) firm from market dominance to total dominance (Galloway 2020). Viewing these trends from the standpoint …

Classroom Physical Activity Breaks Effect On Executive Function And Academic Achievement In Elementary School Students, Mark A. Bjornsen

Graduate Theses and Dissertations

Objectives: There were three aims in conducting this pilot study. First, determine the Plus Minus Task assessment's reliability to measure the executive function of shifting. Second, determine the feasibility and acceptability of CPAB by students and teachers. Finally, determine the preliminary dose-response of acute physical activity on shifting in elementary students. Methods: This was a pilot study of a classroom physical activity break intervention. Utilizing a withinsubject, cross-over design, students participated in a practice day and then all three treatment conditions: a 10-minute seated lesson (control condition) and 5 and 10 minutes (experimental conditions) of classroom physical activity breaks. A …

The Effectiveness Of The Inquiry Based Learning Method In A Private Independent School Environment, Fred R. Eaves

Graduate Theses and Dissertations

The purpose of this study was to examine the effectiveness of an inquiry-based learning model (IBLM) in a small, independent school educational environment. Seisan Academy (SA) implemented a new teaching philosophy that centered around an inquiry-based learning approach with a focus on developing a more student-centered culture at the school. This new program was implemented with little feedback or measurement regarding the effectiveness of the approach. This study also looked to address the lack of formal evaluation regarding the implementation of the IBLM.

Multiple sampling strategies were implemented due to the mixed-methods nature of this study. Quantitative data collection included …

A Study Of Student Experiences In The Secondary Transition Program Through Student, Parent, And Teacher Perceptions, Kelley M. Sells

Graduate Theses and Dissertations

The purpose of this research study was to examine and analyze the perceptions of students with mild-moderate disabilities, teachers, and parents regarding the students’ experiences related to their secondary transition plan. More specifically, the qualitative single-case study sought to identify areas of alignment and divergence of these three key members’ perspectives since experiences and perceptions are unique to an individual based on the context and individual’s perspective of the event. These findings suggested that the district showed experiences of valuable student presence and input in their IEP meetings and trusting supportive student-teacher relationships. The study also revealed that significant barriers …

Andragogy For All? A Look At Arkansas Community College Students' Preferences For Andragogical Assumptions, Emilee Sides

Graduate Theses and Dissertations

Community colleges are tasked with juggling multiple missions. They provide open access to education for adults in their community, work with industry partners to educate the local workforce, and provide relevant programming to the communities they serve. When compared with students at four-year institutions, community college students are older, more ethnically and racially diverse, come from lower socioeconomic statuses, and less academically prepared.

Like other community colleges across the country, one of the primary goals of Arkansas community colleges is to help their students succeed. Unfortunately, the state has historically performed poorly in regard to educational outcomes. To get the …

The Jordanian Novel In Postmodern Context, Hamed Alalamat

Graduate Theses and Dissertations

As the Jordanian culture is gradually impacted by the globalization process of late capitalism, this study argues that many Jordanian novels exhibit a number of postmodern characteristics, such as blurring boundaries and disrupting hierarchies, the use of pastiche as a compositional technique, formal fragmentation, and the weakness of utopian imagination. Adopting Fredric Jameson’s theory of postmodernism as a framework, the study explores ten Jordanian novels written between 1986 and 2016 to demonstrate that the modernization process and the cultural changes in the Arab world, in general, and in the Jordanian society, in particular, have increased the density of postmodern features …

Screening And Breeding Soybean For Flood Tolerance, Maria Roberta De Oliveira

Graduate Theses and Dissertations

Waterlogging can be detrimental to soybean [Glycine max (L.) Merr.] growth and development, with effects ranging from chlorosis and stunting to yield loss and plant death. Soybean responses to, and the effects of, waterlogging are dependent on the growth stage of the plant at the initiation of waterlogging. The objectives of this study were: (1) to assess the effectiveness of Genomic Selection (GS), Marker Assisted Selection (MAS) and Phenotypic Selection for flood tolerance at the progeny row stage as compared to random selection, for the development of high-yielding flood-tolerant lines; and (2) to compare field-screening and hydroponic greenhouse screening methodologies …

Three Essays On The Performance Evaluation Of Actively Managed Investment Funds, Qing Yan

Graduate Theses and Dissertations

This dissertation investigates the performance of hedge funds and actively managed U.S. equity mutual funds.

The first chapter examines the relation between hedge funds and the low beta anomaly. Different conditions in the mutual fund and hedge fund industries should lead to different approaches with respect to the low beta anomaly. I find that, unlike most mutual funds, the average hedge fund tends to benefit considerably from the anomaly. About 2.3% per year of apparent alpha for the average hedge fund can be attributed to the low beta anomaly rather than manager skill. Low skill managers are the most reliant …

Prediction, Recommendation And Group Analytics Models In The Domain Of Mashup Services And Cyber-Argumentation Platform, Md Mahfuzer Rahman

Graduate Theses and Dissertations

Mashup application development is becoming a widespread software development practice due to its appeal for a shorter application development period. Application developers usually use web APIs from different sources to create a new streamlined service and provide various features to end-users. This kind of practice saves time, ensures reliability, accuracy, and security in the developed applications. Mashup application developers integrate these available APIs into their applications. Still, they have to go through thousands of available web APIs and chose only a few appropriate ones for their application. Recommending relevant web APIs might help application developers in this situation. However, very …