Digital Commons Network^™

Towards Structured Planning And Learning At The State Fisheries Agency Scale, Caleb A. Aldridge

Theses and Dissertations

Inland recreational fisheries has grown philosophically and scientifically to consider economic and sociopolitical aspects (non-biological) in addition to the biological. However, integrating biological and non-biological aspects of inland fisheries has been challenging. Thus, an opportunity exists to develop approaches and tools which operationalize planning and decision-making processes which include biological and non-biological aspects of a fishery. This dissertation expands the idea that a core set of goals and objectives is shared among and within inland fisheries agencies; that many routine operations of inland fisheries managers can be regimented or standardized; and the novel concept that current information and operations can …

School-Based Agricultural Education Teachers: Self-Efficacy With Face-To-Face, Remote, And Hybrid Instruction And Perceptions Of Professional Development Regarding Technology Integration, Gayle Clark

Theses and Dissertations

This three-article dissertation examined the perceptions of school-based agricultural education teachers in Tennessee, Mississippi, and Alabama on self-efficacy and professional development activities since the onset of the COVID-19 pandemic. The first article was an examination of teacher self-efficacy in delivering instruction in three classroom settings: face-to-face, remote, and hybrid, which is a combination of face-to-face and remote simultaneous instruction. The second was a descriptive study of teacher experiences and perceptions of professional development activities related to instructional technology over the past two years. The third article examines the correlation between each of the teacher self-efficacy instructional setting constructs and perceptions …

The Emerging Value Of The Viroid Model In Understanding Plant Responses To Foreign Rnas, Junfei Ma

Theses and Dissertations

RNAs play essential roles in various biological processes. Mounting evidence has demonstrated that RNA subcellular localization and intercellular trafficking govern their functions in coordinating plant growth at the organismal level. Beyond that, plants constantly encounter foreign RNAs (i.e., RNAs from pathogens including viruses and viroids). The subcellular localizations of RNAs are crucial for their function. While numerous types of RNAs (i.e., mRNAs, small RNAs, rRNAs, tRNAs, and long noncoding RNAs) have been found to traffic in a non-cell-autonomous fashion within plants, the underlying regulatory mechanism remains unclear. Viroids are single-stranded circular noncoding RNAs, which entirely rely …

Alteration Of The Viral Immune Response In The Lung Of Juvenile Rats By Cannabidiol, Kylee J. Burroughs

Theses and Dissertations

Cannabidiol (CBD) has unverified use in the treatment of ADHD but parents are giving CBD to their children to treat hyperactivity and restlessness. CBD has suppressive effects on immune function therapeutically but the effect of pre-exposure to CBD on the response to an immune challenge is unknown. To investigate this, male and female juvenile rats were treated orally with either corn oil or 20 mg/kg or 60 mg/kg CBD daily for 5 days followed 24 hours later by intranasal challenge with a viral mimic, Resiquimod (R848). After 6 hours, lungs were collected for the analysis of gene expression of select …

Assessment Of Simulated And Real-World Autonomy Performance With Small-Scale Unmanned Ground Vehicles, William Peyton Johnson

Theses and Dissertations

Off-road autonomy is a challenging topic that requires robust systems to both understand and navigate complex environments. While on-road autonomy has seen a major expansion in recent years in the consumer space, off-road systems are mostly relegated to niche applications. However, these applications can provide safety and navigation to dangerous areas that are the most suited for autonomy tasks. Traversability analysis is at the core of many of the algorithms employed in these topics. In this thesis, a Clearpath Robotics Jackal vehicle is equipped with a 3D Ouster laser scanner to define and traverse off-road environments. The Mississippi State University …

Effects Of Post-Fire Disturbance Responses Of Microstegium Vimineum On Native Hardwood Seedling Growth And Survival, Zachary A. Chandler

Theses and Dissertations

Invasions by alien understory plant species have gradually become a worldwide challenge in maintaining forest biodiversity and ecosystem productivity. Notably, Microstegium vimineum, a C4 grass native to Japan, has increased dominance in mixed deciduous hardwood forests of the southeastern United States, largely due to its shade tolerance and ability to spread through rhizomes. Microstegium vimineum also proliferates after prescribed fire, a common management tool used in the region to restore forests to desired conditions, and may compete with hardwood seedlings, hindering restoration efforts. Using two upland deciduous hardwood forest research sites in Marshall and Tate Counties, Mississippi, this study …

The Effects Of Professional Experience On Ethical Profiles Of Housing And Residence Life Staff, Sirena L. Cantrell, Sirena L. Cantrell

Theses and Dissertations

The intent of this study was to explore and understand the effects of professional experience on the ethical profiles of housing and residence life staff. Through a survey design, this study used the Managerial Ethical Profile (MEP) to analyze the professional experience of members of the Association of College and University Housing Officers – International (ACUHO-I). The MEP scale measures the range of influences on respondents and describes the major tendencies by placing respondents in ethical profiles. Results from this study indicated that professional experience does influence respondent ethical profiles. This study contributes to the field of higher education by …

From The Sky To The Smartphone: Communicating Weather Information In A Digital Age, Cole M. Vaughn

Theses and Dissertations

As new technology has emerged in the digital era, the public can now choose from a variety of new media from which to get weather information. Weather applications (apps) and social media have emerged as some of the popular new media. This study sought to understand the extent to which these new media are used, how weather apps are perceived, how the news media used Twitter during Hurricane Irma, and how the public engaged with the news media’s tweets. A survey and dataset of tweets were used to evaluate the research questions and hypotheses of this research. The study found …

Examining The Malleability And Influence Of Attributions On Discipline Responses To Child Misbehavior, Jenna E. Russo

Theses and Dissertations

Attributions of child behavior have been shown to influence discipline responses and ultimately, child developmental trajectories. Research highlights various social-psychological factors in the formation of attributions, largely characterized as stable. However, research also demonstrates the efficacy of attribution retraining (AR) programs in restructuring individuals’ explanations for various outcomes. This study examined a trauma-informed training intervention with an AR component designed to evoke balanced and contextual attributions of child behavior among child-serving professionals. Of particular interest was the malleability and stability of attributions, and their influence on discipline responses. From pre- to post-training, there was a significant decrease in hostile attributions …

Mobile Learning: Examining The Relationships Between The Use Of Mobile Devices And Student Performance In Ela And Math Within Technology And Non-Technology Districts, Gabrielle S. Jones

Theses and Dissertations

Mobile and other internet-connected devices infiltrate society, including K-12 classrooms. A large body of research indicated that these devices might distract students; however, other studies have revealed many benefits when the devices are used for educational purposes. This study aimed to examine the relationships between the use of mobile devices and student performance in mathematics (MA) and English Language Arts (ELA). The study compared two districts, one that had implemented a 1:1 technology infrastructure for learning and one that had not. Archival data on the Mississippi Academic Assessment Program (MAAP) standardized test were accessed from the two districts, containing fourth-grade …

The Effect Administrators Have On Employee Morale Within The University Of Arkansas Cooperative Extension Service, Sherry L. Beaty-Sullivan

Theses and Dissertations

The purpose of this study was to describe the relationship between Arkansas County Extension County staff morale and their perceived relationship county staff had with their County Staff Chair. The University of Arkansas Cooperative Extension Service (UAEX) can utilize the results from this research to identify individuals who have the capacity to build high-quality relationships with staff members, thereby promoting higher levels of morale within the organization. Administrators can use this study to identify current or future leaders within the organization by identifying those who can promote high-quality relationships with county-level staff. Results from this study may also be used …

An Inventory And Analysis Of Human Remains From The Aklis Site (12vam1-42) Curated At Mississippi State University, Kaelyn Olson

Theses and Dissertations

This project was an inventory and analysis of human remains from the Aklis archaeological site (12VAm1-42), located in the Sandy Point National Wildlife Refuge, St. Croix, U.S. Virgin Islands. The human remains inventoried during this project were collected by the U.S. Fish and Wildlife Service and MSU during surface collection and emergency salvage excavations at Aklis. The statistical analysis of the data focused on the minimum number of individuals (MNI) per square meter, the degree of long bone completion, skeletal element counts across excavated features, and the degree of weathering. Results indicate that the assemblage curated at MSU includes a …

Quasi 1d Modelling Of A Scramjet Engine Cycle Using Heiser-Pratt Approach, Asmaa Chakir

Theses and Dissertations

Scramjet engines are key for sustained hypersonic flights. Analytic models play a critical role in the preliminary design of a scramjet engine configuration. The objective of this research is to develop and validate a quasi-1D model for the scramjet engine encompassing inlet, isolator and combustor, to evaluate the impact of flight conditions and design parameters on the engine functionality. The model is developed assuming isentropic flow in the inlet with a single turn; modified Fanno-flow equations in the isolator that account for the area change of the core flow; and the combustor is modeled using Heiser-Pratt equations accounting for the …

The Influence Of Taste Sensitivity To 6-N-Propylthiouracil (Prop) On Anthropometric Measurements, Body Composition, And Eating Behaviors Among Female College Students, Abeer Mohammedsharief Alardawi

Theses and Dissertations

Taste is one of the crucial factors that contributes to shaping eating behaviors and is also one of the leading reasons that affects our preferences to like or dislike some foods that mainly have a bitter taste. Variation in bitter phenotype (tasters and non-tasters) could influence diet quality and in turn body weight, which overall influenced health outcomes. The objective of this study was to identify whether bitter taste phenotype status influences anthropometric measurements, body fat percentage, and eating behaviors (liking and intake) in female college students. In this cross-sectional study (n = 86), female college students aged 18 to …

Human Gait Movement Analysis Using Wearable Solutions And Artificial Intelligence, Samaneh Davarzani

Theses and Dissertations

Gait recognition systems have gained tremendous attention due to its potential applications in healthcare, criminal investigation, sports biomechanics, and so forth. A new solution to gait recognition tasks can be provided by wearable sensors integrated in wearable objects or mobile devices. In this research a sock prototype designed with embedded soft robotic sensors (SRS) is implemented to measure foot ankle kinematic and kinetic data during three experiments designed to track participants’ feet ankle movement. Deep learning and statistical methods have been employed to model SRS data against Motion capture system (MoCap) to determine their ability to provide accurate kinematic and …

Effects Of Soil Management Practices On Water Infiltration And Maize Yield To Improve Mississippi River Valley Alluvial Aquifer Sustainability, Jacob Rix

Theses and Dissertations

Surface sealing and hardpans in loam soils are problematic in the Mid-South U.S. because of intense tillage. Two experiments quantified the effects of soil management practices on infiltration and maize yield in loam soils. The first study measured the impacts of in-row subsoiling frequency × furrow irrigation frequency. In-row subsoiling significantly improved the infiltration of irrigation but not the infiltration of precipitation. In-row subsoiling with low irrigation frequency is optimal to achieve profitable maize yields while encouraging groundwater conservation. In the second study, six soil management treatments were imposed. For single-ring infiltrometer tests, infiltration rates were different between the two …

Resiliency Of Levee-Protected Power Networks To Flooding In A Changing Climate Integrating Environmental Justice, Seyed Saeed Miraee-Ashtiani

Theses and Dissertations

Electric power system (EPS) is an integral part of infrastructure systems. Ensuring its resiliency to extreme weather events and natural hazards is crucial to protect the safety, economy and public health. Recorded and projected data show an increase in the frequency and severity of extreme weather events and natural hazards attributed to a changing climate. It is critical to ensure the integrity of the aging infrastructure systems and to promote environmental justice by shrinking the energy-equity gap to lower power outages in disadvantaged communities.

An important aspect is the resiliency interdependency of EPS to other critical infrastructure systems, an aspect …

Seasonal Trends And Sampling Time Of Day On Overall Microbial Population And Indicator Organisms In Catfish Parts And Catfish Processing Environment, Maria Gabriela Hidalgo-Sindoni

Theses and Dissertations

Commercial production of catfish is the leading aquaculture industry in the United States. Production in Mississippi, Louisiana, Alabama, and Arkansas representing 96% of the total catfish sales in the USA. In 2017, the USDA-FSIS added testing of generic Escherichia coli and Enterococcus to the sampling of Siluriformes. The incidence of Escherichia coli in fish and seafood has been associated with possible fecal matter contamination. However, this indicator bacteria could also be a part of the natural microflora of catfish ponds where processing plants collect hybrid catfish. Aerobes, Psychrotrophs, Coliforms, Escherichia coli, and Enterobacteriaceae counts among environmental, liquid and fish …

Animal Husbandry In The 21st Century: Application Of Ecological Theory And Precision Technology To Inform Understanding Of Modern Grazing Systems, Ira Lloyd Parsons

Theses and Dissertations

Ruminant animals comprise the greatest proportion of herbivores around the world, provide essential ecosystem services and human consumable protein by consuming grass and human inedible dietary fiber. Herbivory pressure alters plant communities and species diversity, effectively making grazing animals ecosystem engineers in dynamic ecosystems. Development of advanced computer processing power coupled with biometric and ecosystem sensors may be employed in the internet of things framework to create an integrated information system designed to inform understanding of grazing system function and animal energy balance. Towards this end, I utilized Bos indicus / Bos taurus crossbred steers (n = 20) across two …

Metagenomic Analysis Of Root-Associated Microbiome Of Healthy And Taproot Decline-Affected Soybeans And Identification Of Healthy Soybean Root Endophytes With Protective Activity Against The Causal Agent, Xylaria Necrophora, Uyen Wesser

Theses and Dissertations

Plant roots are associated with a diverse microbial community of bacteria and fungi. The root microbiome communities associate with the root surface or penetrate the superficial layers of root tissues. It is of high agronomic interest to characterize root microbiomes and identify microbes with beneficial effects on plant defense against pathogens. Soybean taproot decline (TRD) is an emerging soil-borne disease caused by a fungus classified as Xylaria necrophora, challenging to control and with devastating effects on yield. Our group has initiated a study of the soybean root microbiome with three primary experiments: (I) perform a comparative study of root …

Developing An Early Life Cycle Manufacturability Assessment For Conceptual Designs, Tonya Gamblin Mccall

Theses and Dissertations

Studies have shown that 70 – 80% of a product's life cycle costs are committed by the end of the product design phase (Anderson, 2014; National Research Council, 1991; Swift, 1987). This supports the general claim that decision making in the conceptual stage drives the cost throughout the life cycle. The use of concurrent engineering has been viewed as the answer to this problem, offering the Design for Excellence (DFX) as one approach for evaluating product designs across specific disciplines. This research focuses on a subset of DFX referred to as Design for Manufacturability to develop a means to assess …

Comparing Importance Of Knowledge And Professional Skill Areas For Engineering Programming Utilizing A Two Group Delphi Survey, John F. Hutton

Theses and Dissertations

All engineering careers require some level of programming proficiency. However, beginning programming classes are challenging for many students. Difficulties have been well-documented and contribute to high drop-out rates which prevent students from pursuing engineering. While many approaches have been tried to improve the performance of students and reduce the dropout rate, continued work is needed. This research seeks to re-examine what items are critical for programming education and how those might inform what is taught in introductory programming classes (CS1). Following trends coming from accreditation and academic boards on the importance of professional skills, we desire to rank knowledge and …

United We Stand? Investigating The Impact Of Unified Dues Agreements Between State And National Career & Technical Education (Cte) Professional Organizations On Cte Funding In The Southern States, Justin Ryan Hall

Theses and Dissertations

Career and Technical Education (CTE) teachers have long been active in lobbying the federal and state governments in support of CTE through their professional organizations, but these are not traditionally considered interest groups. This study sought to determine if the formal relationships—dues agreements—between the two largest national professional organizations, and their state affiliates had an impact on state funding for CTE. The impacts of professional organization unity, membership rates, and lobbying expenses on state-level CTE funding were analyzed through the lens of interest group theory, a subfield of political science. Within this population (N = 13), 1) a link …

Parent-Child Relationships And Parental Distress As Moderators Between Chronic Illness And Psychological Problems In Emerging Adults., Abigail Kukay

Theses and Dissertations

The current study aimed to better understand how parental functioning and parent-child relationships might moderate the effects of chronic illness on psychological problems in emerging adulthood. Three hypotheses were made: (1) the presence and severity of chronic illness would associate positively with emerging adult psychological problems, (2) parental distress would moderate the effects between chronic illness presence/severity and emerging adulthood psychological problems, and (3) parent-child relationship quality would moderate the effects between chronic illness presence/severity and emerging adult psychological problems. Data analysis consisted of testing interaction effects, pairwise parameter comparisons, and multiple group analysis. The three-way interaction between endorsing a …

Endotoxin As A Marker For Water Quality, Anas A. Sattar, Christian R. Good, Margaux Saletes, João Brandão, Simon K. Jackson

School of Biomedical Sciences

Background: Water quality testing is vital to protect human health. Current testing relies mainly on culture-based detection of faecal indicator organisms such as Escherichia coli (E.coli). However, bacterial cultures are a slow process, taking 24–48 h and requiring specialised laboratories and trained personnel. Access to such laboratories is often sparse in developing countries and there are many fatalities deriving from poor water quality. Endotoxin is a molecular component of Gram-negative bacterial cell walls and can be used to detect their presence in drinking water. Method: The current study used a novel assay (BacterisK) to rapidly detect endotoxin in various water …

A Call For Research: Ethical Dilemmas Of Autonomous Vehicle Manufacturers, Remy Harwood

Cybersecurity Undergraduate Research Showcase

While autonomous vehicles accounted for about 31.4 million vehicles on the road in 2019 (Placek). They have continued to flood the market and have a projected growth to 58 million in just 8 years from now (Placek) As well as a market cap in the billions of dollars. Even the comparatively new AV company Tesla has over 3 times the market cap value of the leading non AV brand Toyota (Market Cap) who are also working toward AVs as well, like their level 2 teammate driver assistance. Following Moore’s Law, as technology continues to improve, their social impact and ethical …

Investigating Privacy Policies Using Policylint Tool, Tricia Camaya

Cybersecurity Undergraduate Research Showcase

Organizations essentially inform clients about data collection and sharing practices through privacy policies. Recent research has proposed tools to help users better comprehend these lengthy and intricate legal documents that summarize collection and sharing. However, these instruments have a significant flaw. They overlook the possibility of contradictions within a particular policy. This paper introduces PolicyLint, a tool for analyzing privacy policies that simultaneously considers negation and varying semantic levels of data objects and entities. PolicyLint accomplishes this by using sentence-level natural language processing to automatically create ontologies from a large corpus of privacy policies and capturing both positive and negative …

Ethical Concerns In Self-Driving Cars, Victoria Shand

Cybersecurity Undergraduate Research Showcase

Automobiles have been in existence since 1672 and only went up from there. Self-driving cars are a fantastic piece of technology; they can self-park, laser ranger finder, and near vision; they can map the road in advance, understand road signs, and, in some cases, handle certain variables on the road.

When talking about any form of technology, the possibilities are endless technology is a continuously evolving idea. When discussing self-driving cars, they have some fantastic and encouraging benefits and ideas. Some ideas would be that vehicles could communicate with each other, we could eliminate the need for traffic lights, and …

Lagasse Receives Distinguished Service Award, Communications And Marketing

Campus News Archive

No abstract provided.

Webs Of Proximity And Just-In-Time Information, Carrie A. Boettcher, Laurie J. Bonnici, Brian C. O'Connor

Proceedings from the Document Academy

Disciplinary webs of proximity frequently overlap at the periphery of a topic where interests intersect for problem-solving. Failure to account for disciplinary differences can result in dis-ease – tension that interferes with meaning-making. This can be especially problematic in just-in-time information settings. An unexpected social media case study involving severe weather reporting and algorithm-driven system censorship makes evident the role of a constellation of pragmatic factors that can enhance or hinder just-in-time information delivery. Employing webs of proximity, we probe the severe weather censorship event with complementary bodies of knowledge and disciplinary perspectives. Intersectionalities are discussed through lenses of proximity …