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Alternative Methods To Improve Livestock Performance While Grazing Low-Quality Forages., Ivan Raynard Thomas Jr
Alternative Methods To Improve Livestock Performance While Grazing Low-Quality Forages., Ivan Raynard Thomas Jr
Graduate Theses and Dissertations
Stocker cattle producers in the southeastern part of the U.S. heavily depend on traditional forages such as bermudagrass [Cynodon dactylon] pastures during the warm season for grazing. Summer annual forages offer stocker cattle operations a valuable alternative source of forage. These forages have high yield potential and can help extend the grazing season. This is particularly beneficial during the summer months when traditional forage sources may be limited. Warm-season annual grasses may experience a decrease in crude protein concentrations during late summer and early fall. As a result, it may be necessary to find alternative sources of crude protein or …
Soilless Substrates As A Critical Control Point For Mitigating Food Safety Risks Within Hydroponic Leaf Lettuce Production, Eric Nuertey Tetteh
Soilless Substrates As A Critical Control Point For Mitigating Food Safety Risks Within Hydroponic Leaf Lettuce Production, Eric Nuertey Tetteh
Graduate Theses and Dissertations
The effect of hydroponic soilless substrates and microbial biocontrol agents on the persistence of foodborne pathogens in indoor lettuce production is variable depending on substrate type, pathogen species, and biocontrol formulation. This study addressed key gaps by first characterizing the ability of different substrates to support Salmonella and Listeria monocytogenes survival and then evaluating the ability of pine biochar and Bacillus subtilis to suppress pathogen persistence in selected substrates under controlled conditions. In the first experiment, the persistence of Salmonella and L. monocytogenes was evaluated in four soilless substrates: rockwool (RW), low density foam (LDF), peat moss (PM) and coco …
Challenges And Opportunities In Dry Aging: Producer Perspectives And Valorization Of Dry- Aged Waste Products, Peyton Scout Arnold
Challenges And Opportunities In Dry Aging: Producer Perspectives And Valorization Of Dry- Aged Waste Products, Peyton Scout Arnold
Graduate Theses and Dissertations
Despite the projected increase in the dry aging market, producers may be hesitant to incorporate dry aging practices. This thesis aims to identify primary concerns faced by producers in implementing a dry aging program. Semi-structured interview surveys were conducted via Qualtrics (N = 100). Results indicated that an “advanced” level of dry aging knowledge correlated with a higher importance in the use/sale of dry aged products (P = 0.02). Cost, demand, and sourcing were the top three concerns of producers practicing dry aging. Those considering implementation were concerned with cost, processing parameters, safety, demand, and sourcing. No significant differences were …
Seasonality Of Bovine Respiratory Disease Incidence, Nasal Temperatures, And The Nasal Microbiome In Receiving Beef Cattle: Understanding The Risk Of The Bovine Respiratory Disease Complex, Robin Ashley Cheek
Graduate Theses and Dissertations
Bovine respiratory disease (BRD) has persistently been the leading cause of morbidity of beef cattle in the United States. Season has been directly associated with respiratory disease incidence and is likely a proxy for weather conditions, which vary by geographical location. The nose is one of the first points of contact between the outside environment and inside the body. The nasal microbiome and its relationship with BRD have been heavily studied within beef cattle, but there are not yet any studies to determine if the environment within the nasal cavity has a role to play in this mechanism. This dissertation …
Evaluation Of Metabolizable Energy And Phosphorus Availability In Conventional And Fractionated Dry-Grind Corn Co-Products For Poultry, Luke Parisi
Graduate Theses and Dissertations
The purpose of this research was to determine the availability of energy and phosphorous (P) in dry-grind corn co-products in chickens was assessed. In the first objective, the determination of energy availability, both a precision-fed rooster assay and an ad libitum fed broiler chicken assay were used in order to elucidate energy availability in corn co-products. There were 8 samples of corn fermented protein (CFP) and 2 samples of conventional distillers dried grains with solubles (CDDGS) evaluated for metabolizable energy (ME). The CFP contained a mean CP and crude fat of 55 and 3.7% (DM basis), respectively, compared with 30 …
Decoration Of Lactic Acid Bacterium By Exploiting In Vitro Sortase A Transpeptidase, Faisal Hamd Alqhtani
Decoration Of Lactic Acid Bacterium By Exploiting In Vitro Sortase A Transpeptidase, Faisal Hamd Alqhtani
Graduate Theses and Dissertations
Attaching a drug module to the surface of lactic acid bacteria was the main aim of this dissertation, and it was achieved. By using the Sortase A mechanism, the drug module (green fluorescent protein fused to the LPETG motif) was anchored to the LAB surface. To reach the final results, this dissertation will describe the process that I undertake to achieve the end goal. Modifying media, producing pure enzymes with less impurity, and reducing the protease activity in E. coli BL21 were all described in this five-chapter dissertation. Keywords: drug delivery, lactic acid bacteria, green fluorescent protein, sortase A, fusion …
Potassium Fertilization Timing And Critical Stalk Potassium Concentration As Tools To Improve Corn Production, Gabriela Andrade Leite Mengez
Potassium Fertilization Timing And Critical Stalk Potassium Concentration As Tools To Improve Corn Production, Gabriela Andrade Leite Mengez
Graduate Theses and Dissertations
Potassium (K) is a common yield-limiting nutrient in Mid-Southern U.S. corn (Zea mays L.) production, emphasizing the importance of effective diagnostic tools to support fertilizer decision-making. This study integrated two approaches to improve K management in irrigated corn systems: (i) evaluating K fertilization timing to identify in-season opportunities for correcting K deficiency, and (ii) developing a corn stalk-based diagnostic test to assess end-of-season K and nitrate-nitrogen (NO₃-N) status and fertilizer adequacy. Seven (2024-2025) and eight (2023-2024) field trials were conducted across Arkansas for the K application timing and stalk testing studies, respectively. For the K timing study, fertilizer-K (112 kg …
Corn Yield And Tissue-Potassium Response To Potassium Fertilization, Wyatt A. Rongey
Corn Yield And Tissue-Potassium Response To Potassium Fertilization, Wyatt A. Rongey
Graduate Theses and Dissertations
Potassium (K) deficiency is an increasingly important yield-limiting factor for irrigated corn (Zea mays L.) in Arkansas, where below optimum soil-test K (STK) acreage is increasing and visible K deficiencies or hidden K hunger threaten yield and profitability. Improving K management for modern, high-yielding hybrids require refining soil-test-based fertilizer recommendations and defining growth-stage-specific tissue-K sufficiency ranges that diagnose deficiency before irrecoverable yield loss occurs. This research aimed to i) quantify corn grain yield and yield component responses to K fertilization across a wide range of STK levels; ii) determine the frequency and magnitude of agronomically and economically meaningful yield responses …
Organic-Complexed Or Inorganic Trace Mineral Tub Supplementation: Impacts On Productivity And Reproductive Outcomes In Beef Cows And Heifers, Jacy Riddle
Graduate Theses and Dissertations
The objective of these experiments was to investigate the effects of organic-complexed or inorganic trace minerals (copper, cobalt, manganese, and zinc) on cow reproductive performance, suckling calf growth, as well as heifer development and reproductive outcomes utilizing free-choice tub supplementation. In lactating cows, treatments consisted of molasses-based tub supplementation containing either complexed or inorganic trace minerals, with an additional pre-breeding drench administered only to cows receiving complexed minerals. The drench contained complexed or organic copper, cobalt, manganese, and zinc. Supplementation began approximately 6 weeks prior to fixed-timed artificial insemination (FTAI) and continued until bull removal (d 105). In weaned replacement …
Impact Of Baseline Cognition On Dual-Task Performance: Tracking Verbal Accuracy And Fluency In Adults At Risk For Alzheimer’S Disease, Rebecca Nicole Frederichs
Impact Of Baseline Cognition On Dual-Task Performance: Tracking Verbal Accuracy And Fluency In Adults At Risk For Alzheimer’S Disease, Rebecca Nicole Frederichs
Graduate Theses and Dissertations
Alzheimer’s Disease (AD) is increasing in prevalence as life expectancy continues to rise, highlighting the need for sensitive measures to detect early cognitive changes. This study examined the effects of baseline cognitive status on dual-task performance over time, in terms of dual-task cost, verbal fluency, and verbal accuracy in older adults at risk for AD. This study utilized a quantitative secondary analysis of the longitudinal dataset, the Digital, Cognitive, Multi-Domain Alzheimer Risk Velocity (DC-MARVel) study (Gray et al., 2022). Participants were categorized into low, medium, or high cognitive tertiles based on baseline Repeatable Battery for the Assessment of Neuropsychological Status …
Ontogenetic Variation In Palatal Morphology In Tufted And Untufted Capuchins, Valerie Contreras
Ontogenetic Variation In Palatal Morphology In Tufted And Untufted Capuchins, Valerie Contreras
Graduate Theses and Dissertations
ABSTRACT Craniofacial variation and its relation to diet have been widely examined, but with less attention exclusively to the palate. Previous studies have shown that groups consuming a more resistant diet exhibit morphological differences in the craniofacial skeleton, including a longer and wider palate when compared to groups consuming a less resistant diet; similar patterns have been observed among captive vs. wild populations. Here, I present a 3D morphometric analysis of palatal ontogeny in tufted (Sapajus spp.) and untufted (Cebus spp.) capuchins and compare captive vs. free-ranging semi-provisioned Sapajus. Tufted capuchins are known to consume more mechanically resistant foods compared …
Evaluation Of Loading, Release, And Bioavailability Of Resveratrol Encapsulated In Porous Starch, Yu-Yun Wang
Evaluation Of Loading, Release, And Bioavailability Of Resveratrol Encapsulated In Porous Starch, Yu-Yun Wang
Graduate Theses and Dissertations
Resveratrol (Res) is a polyphenolic compound found in grapes, red wine, and berries, with health benefits such as antioxidant, anti-inflammatory, and cardioprotective properties. The poor stability and bioaccessibility of Res after consumption by humans require the development of delivery systems. Among many delivery systems, porous starch (PS) is a safe, cost-effective, and high in adsorption capacity encapsulation material for drugs and bioactive compounds sensitive to environmental factors like light and heat. Porous rice, corn, and potato starch have different granule sizes, pore volumes, and surface areas. However, the impact of these encapsulation capabilities remains unclear among the three porous starches. …
A Systems Analysis Of Autonomous Uav Swarm Spraying For Precision Agriculture, Ryker Davis
A Systems Analysis Of Autonomous Uav Swarm Spraying For Precision Agriculture, Ryker Davis
Graduate Theses and Dissertations
The application of Unmanned Aerial Vehicles (UAVs) in civilian sectors, particularly for precision agriculture and targeted aerial spraying, has rapidly evolved from passive monitoring to advanced, autonomous, multi-agent coordination. While deploying UAV swarms offers a promising solution to the payload and battery endurance limitations of single drone operations, realizing field-scale coverage introduces significant logistical and safety challenges. To evaluate the trajectory and viability of swarms, this study synthesizes bibliometric trends, operational simulation, and safety reporting analysis. First, because physical testing of complex swarms poses financial and safety risks, we developed an agent-based and discrete event simulation to evaluate autonomous spraying …
Evaluation Of Thresholds For Adult Tarnished Plant Bug, Lygus Lineolaris (Beauvois), In Thryvon® Cotton, William Anderson Fletcher
Evaluation Of Thresholds For Adult Tarnished Plant Bug, Lygus Lineolaris (Beauvois), In Thryvon® Cotton, William Anderson Fletcher
Graduate Theses and Dissertations
Tarnished plant bug (TPB) is the most economically damaging insect pest of Mid-South cotton. TPB reduces yield is reduced by damaging squares, terminal growth, and small bolls, resulting in reduced yield. Currently, cotton grown in the Mid-South averages 1-6 insecticide applications per year for control of TPB. The introduction of ThryvOn® cotton technology provides a new management strategy for TPB control. ThryvOn® technology produces the Bacillus thuringiensis (Bt) protein Mpp51Aa2, which has insecticidal activity on TPB. A field study was conducted at five locations in 2024 and seven locations in 2025 across the Mid-South to evaluate different threshold levels for …
Evaluation Of A High Protein Low Oligosaccharide Soybean Meal In Poultry Production, Kasey Matusik
Evaluation Of A High Protein Low Oligosaccharide Soybean Meal In Poultry Production, Kasey Matusik
Graduate Theses and Dissertations
The purpose of this study was to evaluate the influence of feeding a high protein, low oligosaccharide soybean meal to optimize poultry nutrition by the effects of feeding the soybean meal to roosters, broiler chickens, and turkeys. Two research objectives were evaluated to determine whether high protein, low oligosaccharide soybean meal would have increased nutritional value. The first objective assessed the metabolizable energy (ME) content of a high protein, low oligosaccharide soybean meal compared to a conventional soybean meal. Using roosters, broiler chickens, and turkey poults, three bioassays were conducted to evaluate the ME of the soybean meal. Results demonstrated …
Exploring Google Trends In Assessing Personal Finance Needs For Cooperative Extension Service Programming, Megan Wells
Exploring Google Trends In Assessing Personal Finance Needs For Cooperative Extension Service Programming, Megan Wells
Graduate Theses and Dissertations
The Cooperative Extension Service (CES) relies on systematic needs assessments to guide program development; yet, traditional approaches often depend heavily on stakeholder input and professional judgment, offering limited insight into consumer level needs. This mixed methods study explored Google Trends as a complementary, consumer driven data source for assessing Family Resource Management (FRM) needs within the Arkansas CES. Grounded in Witkin and Altschuld’s three level needs assessment framework and Uses and Gratifications Theory, the study integrated three data sources representing stakeholders, service providers, and consumers: (1) Family and Consumer Sciences (FCS) advisory committee reports, (2) survey of Family Consumer Science …
Grazed Pasture Effects On Greenhouse Gas Emissions In The Ozark Highlands, Tyler Buchanan
Grazed Pasture Effects On Greenhouse Gas Emissions In The Ozark Highlands, Tyler Buchanan
Graduate Theses and Dissertations
In the United States (US), grazinglands serve as the main foundation for the livestock industry, and, in Arkansas specifically, pastures are essential for rotational grazing and dairy operations. Climate change is increasingly becoming a concern in the agriculture industry, largely caused by anthropogenic activities increasing greenhouse gas (GHG) concentrations in the atmosphere, at least partly due to the nutrient recycling that occurs from animal manure additions in grazinglands. Therefore, quantifying GHG emissions from pastures is essential to better understanding the impacts of grazing on the environment. The objective of this study was to quantify and evaluate the potential effects of …
Dissecting The Complex Genomic Landscape Underlying Oxidative Stress Resistance Using Natural Variation In Yeast, Sonali Lakshika Anne Lenaduwe
Dissecting The Complex Genomic Landscape Underlying Oxidative Stress Resistance Using Natural Variation In Yeast, Sonali Lakshika Anne Lenaduwe
Graduate Theses and Dissertations
Stress is experienced across the tree of life. Survival in fluctuating environments depends on a robust genetic architecture. This dissertation examines the genetic and metabolic determinants underlying one such adaptive response: cross-protection. Leveraging natural variation in the stress responses of budding yeast, Saccharomyces cerevisiae, I examine the genetic variation contributing to ethanol-induced cross-protection against oxidative stress. Acquired stress resistance, in which mild pre-exposure improves survival to subsequent stresses, is prevalent across diverse organisms and can involve both same-stress and cross-protection. Using high-throughput bulk segregant analysis (BSA-seq) and advanced intercross mapping populations derived from natural yeast isolates, I identify quantitative trait …
Impacts Of Climate-Smart Agriculture On Greenhouse Gas Emissions In Southeast Arkansas Cotton, Cassandra Seuferling
Impacts Of Climate-Smart Agriculture On Greenhouse Gas Emissions In Southeast Arkansas Cotton, Cassandra Seuferling
Graduate Theses and Dissertations
Increasing concerns of climate change have led to the evaluation of greenhouse gas (GHG) emissions [i.e., carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O)] from agroecosystems, particularly cotton (Gossypium hirsutum) production. Technology improvement and conservation agriculture methods [i.e., reduced-tillage (RT) instead of conventional tillage (CT) and the use of cover crops (CC)] require further evaluation regarding GHG emissions from Arkansas cotton production. The first objective of the study was to evaluate four gas-flux-determination methods [i.e., linear or exponential regression models, with negative fluxes (WNF) included in the dataset or replacing negative fluxes (RNF)] on CO2, CH4, and N2O fluxes …
Developmental Assets And Risk-Related Restraint And Resistance Orientations Among Emerging Adult College Students: Examining Protective Associations, Summer N. Beck
Graduate Theses and Dissertations
Abstract Background: Although developmental assets are well established as protective factors during childhood and adolescence, less is known about their role during emerging adulthood, a period when the prevalence of several types of risk behaviors peak. For the U.S. college student, campus can provide ideal conditions for supporting the extended transition to adulthood. However, that same environment may increase exposure to health risk behaviors. This study examined associations between developmental assets and the risk-related restraint and resistance orientations involving sexual activity, alcohol, and illicit drugs among emerging adult college students. Methods: A cross-sectional correlational design was employed with a sample …
Validation Of Rice Tissue Sampling For In-Season Nutrient Management Of Nitrogen, Phosphorus, And Potassium, Tanner Smith
Validation Of Rice Tissue Sampling For In-Season Nutrient Management Of Nitrogen, Phosphorus, And Potassium, Tanner Smith
Graduate Theses and Dissertations
Nitrogen (N), phosphorus (P), and potassium (K) are the 3 most important nutrients involved in rice (Oryza sativa L.) growth and development. Tissue sampling has been proven to be a potential tool to provide inseason information about plant nutrient concentrations at specified timings and growth stages. With increased interest in tissue sampling and improving nutrient management effectiveness, more information is needed to validate plant tissue concentrations at which additional fertilizer inputs may be warranted. Experiments were conducted in 2024 and 2025 at the Rice Research and Extension Center (RREC) near Stuttgart, Ark.; Pine Tree Research Station (PTRS) near Colt, Ark.; …
Ꭰꮎꮰꭶ (Missing): A Phenomenological Study Of Native American Student Experiences In The Law School Setting, Christina Allene Shaw
Ꭰꮎꮰꭶ (Missing): A Phenomenological Study Of Native American Student Experiences In The Law School Setting, Christina Allene Shaw
Graduate Theses and Dissertations
The legal landscape for Native American people in the United States is ever evolving and highly nuanced, with its historical foundation anchored into the classical pilasters of American legal jurisprudence. Federal Indian law scholars place that historical foundation within the written opinions of Chief Justice Marshall dating back to the 1820s and 1830s (Fletcher, 2024). Although few law students will likely find themselves closely examining the unassigned readings of the Marshall Trilogy or contemporary federal Indian law, there is one small group of students in law school doing exactly that: Native American law students. American Indians and Alaska Natives are …
Investigating The Influence Of Dietary Phytogenics And Postbiotics On Horizontal Transmission Of Histomonas Meleagridis In Commercial Turkey Poult Hens, Diego Fernando Cortes Velez
Investigating The Influence Of Dietary Phytogenics And Postbiotics On Horizontal Transmission Of Histomonas Meleagridis In Commercial Turkey Poult Hens, Diego Fernando Cortes Velez
Graduate Theses and Dissertations
Histomonas meleagridis is a parabasalid protozoan and the causative agent of histomonosis, or blackhead disease, in turkeys. Withdrawal of the last remaining in-feed arsenical from the market in 2015 led to the re-emergence of the disease. As a result, there is a need to investigate alternatives, such as dietary inclusion of postbiotic and phytogenic compounds, to reduce H. meleagridis transmission and disease severity in commercial turkey flocks. The purpose of this project was to evaluate the influence of dietary inclusion of three different combinations of postbiotic and phytogenic compounds on H. meleagridis transmission in turkey poult hens. A thesis introduction …
Creatures Of Habit? Impact Of Chick Feeder Tray Location On Feed Consumption At 0-7 Days Of Age, Emily Kate Green
Creatures Of Habit? Impact Of Chick Feeder Tray Location On Feed Consumption At 0-7 Days Of Age, Emily Kate Green
Graduate Theses and Dissertations
Early chick nutrition is critical for establishing target growth performance characteristics in broiler chickens. This study evaluated factors within commercial broiler houses that potentially influence feed consumption during the first 7 days. Three trials were conducted in a 12.2 x 122 m commercial broiler house to assess the effects of house sectioning, spatial barriers, and feedline location. In Trial 1, a one-way experimental design was used in which the house was divided into four equal sections using migration fencing every 30.5 m. House sections served as a fixed factor. Feed was provided using chick trays placed beneath the feed line …
Unveiling Factors Influencing Extract Yield From Milled Rice In Brewing, Matthew Aitkens
Unveiling Factors Influencing Extract Yield From Milled Rice In Brewing, Matthew Aitkens
Graduate Theses and Dissertations
Rice (Oryza sativa L.) presents a locally sourced, climate-resistant starch source for the brewing industry. As barley faces increased uncertainty due to rising temperatures, Arkansas-grown rice offers a more stable and cost-effective alternative starch source. However, the use of milled adjunct rice by brewers has remained limited, largely due to knowledge gaps about cultivar-specific properties relative to brewing. Chapter 1 provides an overview of rice as a brewing adjunct, reviewing the physiochemical properties important to brewing success. These properties include kernel size, kernel breakage, amylose content, and gelatinization temperature. Mashing strategies for multiple different brewing layouts are overviewed, showing practical …
Sensing Rna’S Conformation With A Solid-State Nanopore Device At Various Ph And Temperature, Haopeng Li
Sensing Rna’S Conformation With A Solid-State Nanopore Device At Various Ph And Temperature, Haopeng Li
Graduate Theses and Dissertations
This study uses solid-state nanopore technology to investigate the stability and dynamics of RNA molecules under thermal stress and pH fluctuations. Two distinct mRNA samples were analyzed: (1) heat shock protein (HSP)-encoding mRNA extracted from Sulfolobus solfataricus P2, a thermophilic archaeon inhabiting extreme environments such as geothermal sulfuric hot springs (pH < 4, temperature range: 65–90°C), and (2) total RNA extracted from White Leghorn chickens, which thrive under standard physiological conditions. ΦX174 virion single-stranded DNA (ssDNA) were included as a comparative reference. Nanopores, fabricated in silicon nitride membranes, were used to electrically characterize the structural properties of individual RNA molecules in solution, close to their native environments. The nanopore membrane separates two chambers containing salt buffer solution, where ionic current is the primary measurement parameter. When a voltage bias is applied across the membrane, ion flow and an ionic current can be measured. Charged RNA molecules driven translocation through the nanopore induces pore resistance changes, resulting in detectable current blockade events. Variations in these events provide insights into RNA secondary structure and conformational dynamics. By systematically altering pH and temperature, this study elucidates the effects of environmental stressors on RNA stability and structural integrity. The findings reveal distinct responses between thermophilic HSP-encoding mRNA and mesophilic RNA, underscoring the adaptive mechanisms of thermophilic RNA under extreme conditions. These results contribute to a better understanding of RNA behavior under stress and establish a foundation for future applications in RNA-based diagnostics and biotechnology development.
Consumer Perceptions Of Fda Front-Of-Package Nutrition Labeling, Madison Price
Consumer Perceptions Of Fda Front-Of-Package Nutrition Labeling, Madison Price
Graduate Theses and Dissertations
The U.S. Food and Drug Administration (FDA) proposed a front-of-package nutrition labeling (FOPL) rule in early 2025 to help consumers more quickly and easily compare the nutritional quality of packaged foods (U.S. Food and Drug Administration, 2025). FOPL is gaining attention as a way to encourage healthier eating habits and consumer choices, but there is still debate over which label format works best. The objective of this study was to examine consumer perceptions, understanding, and trust of FDA FOPL, and to determine how these labels impact purchasing behavior and nutritional decision-making. Data were collected via an online Qualtrics survey distributed …
The Impact Of Change In The Legal Definition Of Confidentiality On The Redaction Behavior Of U.S. Firms, Alexey Alferov
The Impact Of Change In The Legal Definition Of Confidentiality On The Redaction Behavior Of U.S. Firms, Alexey Alferov
Graduate Theses and Dissertations
U.S. public companies may redact information from material contracts in SEC filings as long as such information is not considered to be material by the SEC and when it is the type of information that the registrant treats as private and confidential. In 2021, the SEC revised redaction regulations in response to the expansion of the legal definition of ‘confidential’ by the Supreme Court of the United States. In this paper I examine whether these changes, referred to as FMI Amendments, impact companies’ decision to redact information from their material contracts filed with the SEC. In addition, I extend Thompson …
Gun Violence Prevention In The Christian Church: A Deductive Content Analysis Of Faith-Based Firearm Education Resources, Sarah Winn
Graduate Theses and Dissertations
This thesis analyzed whether Christian faith-based curricula and toolkits regarding firearm safety and violence prevention align with established best practices in public health, social work, and education research. Previous research has explored the prevalence and impact of gun violence, best practices regarding gun violence and safety interventions, the effectiveness of churches as public health initiative partners, and the relationship between Christianity and views on firearms. In this study, qualitative deductive content analysis indicated that faith-based gun violence prevention toolkits are strongly oriented toward advocacy, community mobilization, and public health framing. At the same time, gaps remain in their integration of …
Evaluation Of The Weed Control Efficacy And Potential Economic Returns Of An Autonomous Weeder In Vegetable Production Systems, Claire Plassmeyer
Evaluation Of The Weed Control Efficacy And Potential Economic Returns Of An Autonomous Weeder In Vegetable Production Systems, Claire Plassmeyer
Graduate Theses and Dissertations
Vegetable production requires intensive weed management. Conventional producers rely on herbicide applications to manage weeds effectively at low costs; however, growers are under pressure to minimize chemical use due to environmental concerns and increased incidences of herbicide resistance. Non-conventional systems, including organic and sustainably focused small-scale production, rely primarily on cultural practices and physical weed control methods, which are labor-intensive and costly due to limited labor availability and rising wages. These concerns have prompted the development of autonomous weeding devices, such as unmanned ground vehicles (UGVs) equipped with navigation sensors and implements to provide repeated, high-precision weed control. Compact devices …