Digital Commons Network^™

Arkansas Fresh-Market Blackberries: Identifying Unique Attributes And Harvest Practices That Impact Marketability, Andrea Lea Myers

Graduate Theses and Dissertations

Fresh-market blackberries (Rubus subgenus Rubus) are sold worldwide and have attributes that appeal to consumers. The delicate-nature of the fruit requires hand harvesting, and minimal handling of the fruit postharvest. Objectives of this research on Arkansas fresh-market blackberries was to 1) identify the unique attributes 2) determine the best handling practices to increase postharvest quality, and 3) evaluate the potential of soft robotic gripper for harvesting. For the first objective, blackberry genotypes were harvested from the University of Arkansas System (UA System) Division of Agriculture Fruit Research Station in Clarksville, AR. Nineteen genotypes were harvested in 2020, eight genotypes were …

The Impact Of Prosodic Reading Instruction On Adolescents’ Silent Reading Comprehension, Judy Lynn Fields

Graduate Theses and Dissertations

Research has established a strong relationship between silent reading comprehension and prosodic reading fluency among young readers, but much remains unknown about this relationship among older readers (Breen, Kaswer, Van Dyke, Krivokapic, & Landi, 2016; Cypert & Petro, 2019). The goal of this study was to determine the impact of prosodic reading instruction on adolescents’ silent reading comprehension. Conducted in a classroom setting in two different school districts, this study included three certified English teachers and a total of 52 students in grades 8, 9, and 10 for a period of nine to twelve weeks with a total of 810 …

The Lived Experiences Of Transmasculine Speakers: A Phenomenological Investigation Of Vocal Quality And Function In Relation To Gender, Micah Wylie

Graduate Theses and Dissertations

The objective of this study was to learn how transmasculine individuals perceive the quality and function of their voices, and how those perceptions influence how they experience gender identity and communicate with others. This qualitative study adopted a hermeneutical phenomenological approach that involved using content analysis and thematic analysis to describe and interpret phenomena. This approach assumes that the researcher is not biased, but is a part of the world being studied and, therefore, understands the phenomenon by interpretive means. Saturation was achieved when all relevant information was introduced, and patterns of information had been identified. Sixteen interviews were conducted. …

Reactionism: The Motivation To Resurrect The Past, Derrick F. Till

Graduate Theses and Dissertations

Subtle long-term societal changes, whether political, economic, or cultural, can be perceived as threats to personal freedoms and cause reactance (Brehm, 1966). Instead of rationalizing and accepting changing societal dynamics, I assert that some people compensate by reframing the past in ways that legitimize and perpetuate the reactant anger: reactionism. Reactance theory is predicated on the perception that the barrier to freedom is not self-inflicted, thus people should not perceive responsibility for the loss of freedom (Brehm, 1966). Additionally, the perception of threat may be driven in part, or at least enhanced, by perceiving others as having access to restricted …

Teacher Retention And Turnover In Small, Remote, Rural Schools In Missouri, Jordan Dickey

Graduate Theses and Dissertations

This mixed-method study sought to find specific factors influencing teachers in small, remote, rural school districts to continue teaching or to leave their teaching position. Additionally, this study sought to identify specific things district-level administrators could do influence teacher retention rates in small, remote, rural school districts. The quantitative data revealed the top three most influential attributes contributing to teacher retention are supportive school administration, the size of the teacher’s class, and the teacher’s relationship with colleagues. The qualitative data provided narratives to support these rankings and to further identify factors of small, remote, rural schools and their influence on …

100 Million, Cade Scott

Graduate Theses and Dissertations

Alec, an 18-year-old filmmaker, decides to bunk with a group of TikTok stars in a mansion in the suburbs of LA in hopes of becoming as famous as them one day. But, he soon finds out that they plan to keep him behind the scenes. Forced to continue helping them film and post their videos, he starts witnessing shady events involving his step-brother, Kevin. The events reach a crescendo when some of the TikTok stars accidentally disappear. Alec investigates and discovers a sinister plot, and then he finds himself in a fight for his life. Which ends with him narrowly …

The Valiant Woman, Ann Louise Cole

Graduate Theses and Dissertations

In 1600, Hosokawa Tama Gracia perished under mysterious circumstances. She was a noblewoman married to a powerful daimyo, the daughter of a traitor, and a Kirishitan convert during the “Christian Century” in Japan. In life, she was both dutifully subservient and tenaciously bold. In death, she was fodder for propaganda, and in the hands of European writers her life story was re-written for specific narrative purposes. The most striking of these artistic transformations is her depiction as a Christian martyr in the late seventeenth-century Latin Jesuit drama Mulier fortis. The music for this drama was composed by Johann Bernhard Staudt …

Optimizing Virus Prefiltration For Biopharmaceutical Manufacturing, Solomon Isu

Graduate Theses and Dissertations

Virus filters are single-use devices that use a size-based separation process. In virus filters, contaminating virus particles are retained while the therapeutic molecules pass through the membrane pores. Virus filters are an essential component of the overall virus clearance strategy. Sections 1 and 2 of this dissertation provide an introduction and extensive review of monoclonal antibody (mAb) process development, where virus filtration is pivotal. In section 3, prefiltration studies were performed with an industrially relevant IgG1 type mAb using adsorptive and size-exclusion-based prefilters with different mechanisms of action. This mAb has an isoelectric point range of 7.1 to 8.0 and …

A Novel Data Lineage Model For Critical Infrastructure And A Solution To A Special Case Of The Temporal Graph Reachability Problem, Ian Moncur

Graduate Theses and Dissertations

Rapid and accurate damage assessment is crucial to minimize downtime in critical infrastructure. Dependency on modern technology requires fast and consistent techniques to prevent damage from spreading while also minimizing the impact of damage on system users. One technique to assist in assessment is data lineage, which involves tracing a history of dependencies for data items. The goal of this thesis is to present one novel model and an algorithm that uses data lineage with the goal of being fast and accurate. In function this model operates as a directed graph, with the vertices being data items and edges representing …

Exploring Higher Weight Women's Experiences Of Provider Weight Stigma, Meredith W. Moore

Graduate Theses and Dissertations

The purpose of this phenomenological study is to explore the phenomena of weight stigma as experienced by higher weight women in mental health treatment who also engage in restrictive eating behaviors. Women in larger bodies who are emotionally or behaviorally restrictive in their eating behaviors face a unique set of challenges and barriers. These include challenges due the disordered eating behaviors themselves, along with barriers related to weight stigma perpetuated by the mental health providers treating them (Harrop, 2019). Distinct hurdles to proper treatment including delay of diagnosis, longer duration of symptoms, and increased distress related to eating and body …

Using Thermal Units To Predict Biomass Accumulation And Total Nitrogen Uptake For Cover Crops In Arkansas, Mila Victório Pessotto

Graduate Theses and Dissertations

Including cover crops in agricultural production systems is an important management practice. Cover cropping can improve soil health, increase plant-available nitrogen (N), provide surface residue to prevent erosional soil loss, increase water infiltration, and increase weed suppression. Cover crops growth can be predicted using thermal days or growing degree days [GDD] similar to commodity crops such as corn (Zea mays L.) or rice (Oryza sativa). Growing degree day calculations are a well-known tool to predict crop growth stage or development stage and can be adapted for use in any plant species, including cover crops. Identifying and developing the relationship between …

Effects Of Cognitive Style On Food Perception And Eating Behavior, Thadeus Lyndon Beekman

Graduate Theses and Dissertations

Within the fields of psychology, notably cultural psychology, the analytic-holistic cognitive style theory has been introduced, developed, fine-tuned, and validated across a wide range of situations, stimuli, and populations. This research, combined with recent applications of the analytic-holistic theory, suggests that the differences in analytic or holistic tendencies of individuals in food, sensory, and consumer tests can impact food perception and associated behaviors. This dissertation aimed to investigate the impact of analytic-holistic cognitive styles of consumers in food situations. The first objective to accomplish this goal was to conduct exploratory research to identify if and where the analytic-holistic theory may …

Cyanobacterial Harmful Algal Blooms Vary Within And Across Years At Lake Fayetteville, Arkansas, Alyssa Ferri

Graduate Theses and Dissertations

The occurrence of cyanobacterial harmful algal blooms (HABs) and toxins are a nationwide concern. Although Lake Fayetteville likely experienced HABs for many years, microcystin, an algal toxin, was not monitored until 2019. The objectives of this study were to: 1) observe temporal variation in water quality and total microcystin concentrations, 2) quantify thresholds with microcystin and nutrients, algal parameters, and environmental factors, and 3) evaluate complex relationships between total microcystin and nutrient supplies, algal parameters, and environmental factors using a classification and regression tree model (CART). Three sites (dam, inlet, and mid) at Lake Fayetteville were sampled weekly to monthly …

Modeling Damage Spread, Assessment, And Recovery Of Critical Systems, Justin Burns

Graduate Theses and Dissertations

Critical infrastructure systems have recently become more vulnerable to attacks on their data systems through internet connectivity. If an attacker is successful in breaching a system’s defenses, it is imperative that operations are restored to the system as quickly as possible. This thesis focuses on damage assessment and recovery following an attack. A literature review is first conducted on work done in both database protection and critical infrastructure protection, then the thesis defines how damage affects the relationships between data and software. Then, the thesis proposes a model using a graph construction to show the cascading affects within a system …

Teaching White Privilege At A Southern University: A Multi-Method Approach, Morgan Browning

Graduate Theses and Dissertations

Fueled by individual and systemic prejudices, racism continuously cycles through American society. Eliminating racism begins with education and awareness on all societal levels. Denying the existence of privilege, specifically White privilege, allows people to ignore racial inequalities and aids in the perpetuation of injustice. This study focused on educating students at a southern university about privilege, oppression, racism, and discrimination with the goal of contributing to a less racist campus. A similar program developed and implemented in a previous study by the researcher was adapted for online modules. These four online modules consisted of presentations, activities, videos, speakers, and reflective …

Live Access Control Policy Error Detection Through Hardware, Bryce Mendenhall

Graduate Theses and Dissertations

Access Control (AC) is a widely used security measure designed to protect resources and infrastructure in an information system. The integrity of the AC policy is crucial to the protection of the system. Errors within an AC policy may cause many vulnerabilities such as information leaks, information loss, and malicious activities. Thus, such errors must be detected and promptly fixed. However, current AC error detection models do not allow for real-time error detection, nor do they provide the source of errors. This thesis presents a live error detection model called LogicDetect which utilizes emulated Boolean digital logic circuits to provide …

Media Erasure: A 1904 Lynching In St. Charles, Arkansas, Mary Hennigan

Graduate Theses and Dissertations

As Americans grew increasingly interested in historic racial violence following the Black Lives Matter movement in 2021, select news publications chose to publish apologetic editorials and articles that addressed their failure of inclusive reporting for the last century (Lancaster, 2021; Fannin, 2020). In the theme of acknowledging past mistakes, the Printing Hate project emerged to investigate the power white-owned papers had in influencing lynching incidents in the county (Capital News Service, 2021). The present study examines one Arkansas lynching in 1904 St. Charles. The incident includes the death of 13 Black men. Findings from a content analysis of 70 original …

Breeding Soybean [Glycine Max (L) Merr.] Under Reduced Irrigation, Francia Seconde Ravelombola

Graduate Theses and Dissertations

Soybean [Glycine max (L) Merr.], a legume species native to East Asia in the Fabaceae family, ranks among the most important food crops in the world. It is widely grown and known for its high protein and oil concentration. Soybean is valuable because its seeds have multiple applications in food, feed, pharmaceutical, and industrial enterprises. Even though seed yield is the most important trait, breeders have recently given a significant attention to quality traits, such as high protein or modified oil concentration. Soybean seed protein inheritance has been extensively studied; however, genetics of high-protein ‘BARC-7’ soybean are still unknown.On the …

Dentistry And The Law: What Is Illegal About Disclosing Fee Schedules?, Dan Schulte Jd

The Journal of the Michigan Dental Association

This Dentistry and the Law column addresses the question of disclosing fee schedules by dental plans. The author clarifies that dental plans often withhold fee schedule information, citing potential antitrust violations or illegality. However, the column asserts that this is an excuse rather than a legal constraint. The author explains that disclosing fee schedules does not violate antitrust laws; violations occur through agreements that unreasonably restrain competition. The reluctance of dental plans to disclose fee information is attributed to business objectives, not legal concerns. Dentists are encouraged to request fee schedules to make informed decisions about network participation, with a …

Staff Matters: Employees On Military Leave, Jodi Schafer Sphr, Shrm-Scp

The Journal of the Michigan Dental Association

This Staff Matters column addresses an employer's concern about an employee being deployed for military service and explores options for managing the situation. The response emphasizes the application of the Uniformed Services Employment and Reemployment Rights Act of 1994 (USERRA) and the Family and Medical Leave Act (FMLA). The article highlights that USERRA, applicable to all employers regardless of size, mandates unpaid leave for military service members and outlines re-employment rights. Practical suggestions for coping with the absence, including hiring temporary staff and having a clear policy in the employee handbook, are provided. The column also hints at future articles …

10-Minute Ebd: Charcoal Toothpastes Pose Risks With Few Benefits, Kelly Lemke Dds, Ms

The Journal of the Michigan Dental Association

The rising popularity of charcoal toothpaste, fueled by social media influencers and claims of teeth-whitening benefits, prompts an investigation into its effectiveness and potential risks. The article explores the evidence through a PICO (Population, Intervention, Comparison, Outcome) question focused on patients seeking whiter teeth. A literature review reveals limited scientific validation for the cosmetic or health benefits of charcoal-containing oral products. The abrasiveness of charcoal toothpaste poses risks, potentially leading to enamel loss, dentin exposure, and hypersensitivity. Lack of fluoride in many charcoal toothpaste formulations raises concerns about caries risk. The article emphasizes the importance of dental providers conducting due …

J Mich Dent Assoc May 2022

The Journal of the Michigan Dental Association

Monthly, The Journal of the Michigan Dental Association brings news, information, and feature articles to our state's oral health community and the MDA's 6,200+ members. No publication reaches more Michigan dentists!

In this May 2022 issue, the reader will find the following original content:

• A feature on “Periodontal Disease and COVID-19"
• A cover feature introducing Dr. Vince Benivegna 2022-23 MDA President
• A 10-Minute EBD: “Charcoal Toothpastes Pose Risks with Few Benefits”
• A Professional Ethics article on “How Can Our Office be More Inclusive of Transgender Patients”
• News you need: an Editorial, a profile on Dr. Jessica Rikert, recipient of the …

Periodontal Disease And Covid-19, Zhaozhao Chen Dds, Ms, Phd, Laurie K. Mccauley Dds, Ms, Phd, Purnima S. Kumar Bds, Ms, Phd, Hom-Lay Wang Dds, Ms, Phd

The Journal of the Michigan Dental Association

As the gateway to the respiratory system, the oral cavity can play an essential role in SARS-CoV-2 invasion and transmission. Besides high expression of angiotensin‐converting enzyme 2 (ACE2), the oral cavity can harbor viral particles in saliva, gingival crevicular fluid, and the periodontal pocket. Microbial and inflammatory associations closely link periodontitis and COVID-19. In this review, we summarize the possible oral manifestations of COVID‐19, its association with periodontal diseases, the plausible underlying mechanisms of microbial and inflammatory crosstalk between COVID‐19 and periodontal diseases, and mitigation protocols during periodontal treatment.

Elevated Hot Gas And High-Mass X-Ray Binary Emission In Low-Metallicity Galaxies: Implications For Nebular Ionization And Intergalactic Medium Heating In The Early Universe, Bret D. Lehmer, Rafael T. Eufrasio, Antara Basu-Zych, Kristen Garofali, Woodrow Gilbertson, Andrei Mesinger, Mihoko Yukita

Space and Planetary Science Faculty Publications and Presentations

High-energy emission associated with star formation has been proposed as a significant source of interstellar medium (ISM) ionization in low-metallicity starbursts and an important contributor to the heating of the intergalactic medium (IGM) in the high-redshift (z ≳ 8) universe. Using Chandra observations of a sample of 30 galaxies at D ≈ 200–450 Mpc that have high specific star formation rates of 3–9 Gyr−1 and metallicities near Z ≈ 0.3Z⊙, we provide new measurements of the average 0.5–8 keV spectral shape and normalization per unit star formation rate (SFR). We model the sample-combined X-ray spectrum as a …

Post-Obergefell V. Hodges: How Lgbt Contact Can Alter Public Lgbt Policy Positions In The U.S. And Arkansas, Briana Huett

Graduate Theses and Dissertations

The Contact Theory (CT) of attitudinal change has utilized to understand perceptions of minority-group members and the policies that surround them since the 1950s. It has further been used to specifically examine how we form our opinions of LGBT-identifying individuals, the LGBT community, and LGBT policies more generally. However, further evidence is still needed from the CT literature surrounding how this form of contact interacts with individuals’ social identities to determine and alter their LGBT policy positions, how the level of contact with LGBT persons might have differing effects on these positions, and whether LGBT contact holds the same effects …

How Do Virtual Social Media Influencers Affect Millennial And Gen Z Female Consumers’ Purchase Intention? A Comparison Of Fast Fashion Versus Luxury Fashion Brands, Lauren Bouvier

Graduate Theses and Dissertations

With the emergence and increasing prevalence of social media, the effectiveness of social media influencers (SMIs) is apparent in today’s fast-paced life. Virtual social media influencers (VSMIs), computer-generated influencers with a real human appearance, have gained popularity. The purpose of this study is to examine important VSMI’s characteristics that affect brand image and trust which lead to purchase intention (fast fashion vs. luxury fashion brand). Social exchange theory and source credibility model were adopted to develop a theoretical framework for the present study. Two Instagram ads were developed that included the post’s image and corresponding caption: VSMI endorsing H&M and …

Growth Differentiation Factor 5 Is A Paracrine Regulator Of Sarcopenic Obesity, Landen W. Saling

Graduate Theses and Dissertations

Sarcopenic obesity attributes to skeletal muscle loss more than sarcopenia and obesity alone. Individuals with SO suffer from the comorbidity of excess body fat and concurrent muscle mass loss due to aging. Growth differentiation factors (Gdfs) have never been recognized as playing a role in skeletal muscle maintenance in those with SO. Specifically, Gdf5, has been recognized as playing a part in Bone Morphogenic Protein signaling to activate protein synthesis and deactivate protein degradation via SMAD 1/5/8 and SMAD 4 complex. Using RNA sequencing, Gdf5 was identified as being significantly upregulated in SO mice. Purpose: To determine the cellular role …

Cyanobacterial And Microcystin Response To Nutrient Additions At Lake Fayetteville Throughout The 2021 Growing Season, Lillie Haddock

Graduate Theses and Dissertations

Harmful Algal Blooms (HABs) are becoming a global concern due to their increasing distribution, frequency, intensity, and the occurrence of toxins. While it is known that eutrophication influences algal blooms, there is less known about what triggers these HABs to produce toxins, especially microcystin. In this study, we conducted 21 community bioassays at Lake Fayetteville, a hypereutrophic reservoir in Fayetteville, Arkansas, from April-November 2021 to examine how the addition of phosphorous and nitrogen influence cyanobacteria concentrations, microcystin concentrations, and microcystin toxin production. These experiments included a control, nitrogen (1.0 mg/L as KNO3), low phosphorus (0.025 mg/L as K2HPO4), high phosphorus …

Toward Global Localization Of Unmanned Aircraft Systems Using Overhead Image Registration With Deep Learning Convolutional Neural Networks, Rachel Linck

Graduate Theses and Dissertations

Global localization, in which an unmanned aircraft system (UAS) estimates its unknown current location without access to its take-off location or other locational data from its flight path, is a challenging problem. This research brings together aspects from the remote sensing, geoinformatics, and machine learning disciplines by framing the global localization problem as a geospatial image registration problem in which overhead aerial and satellite imagery serve as a proxy for UAS imagery. A literature review is conducted covering the use of deep learning convolutional neural networks (DLCNN) with global localization and other related geospatial imagery applications. Differences between geospatial imagery …

Evaluation Of The Effect Of A Lippia Organoides Essential Oil Extract On Clostridium Perfringens Proliferation In Vitro And Necrotic Enteritis In Broiler Chickens, Makenly E. Coles

Graduate Theses and Dissertations

The purpose of the present research was to assess the effects of essential oils derived from the plant Lippia organoides on performance parameters, intestinal integrity, and necrotic enteritis (NE) in broiler chickens. To do this, a previously established challenge model for NE was utilized which included challenging with Salmonella Typhimurium on day 0, Eimeria maxima on day 18, and Clostridium perfringens on days 22 and 23. Treatment groups included a 1) non-challenged, negative control, 2) challenged control, and 3) challenged, Lippia origanoides (37ppm in the diet). Group 1 (negative control) had significantly (P < 0.05) higher body weight gain from d8-25 and d0-25 compared to both challenged groups. Feed intake was significantly different for all three groups (P < 0.05) at 8-25 days and 0-25 days with group 1 having the highest feed intake for both time periods. Total mortality was greater in the positive control when compared to both the negative and treatment groups. NE lesion scores were significantly different between all groups with the positive control having the highest mean lesion scores and the negative control having a mean lesion score of 0. The positive control group had the highest FITC-d amounts detected in the sera, being statistically higher than both the treatment group and negative group which were both statistically different from each other. At the present inclusion rate for the essential oil (37 ppm), there was an overall reduction in the negative impact from the NE infection. Further studies should be conducted to reach more significant conclusions.