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Synthesis, Characterization, And Photophysics Of Symmetric And Unsymmetric -Nhc Pincer Platinum Halide Complexes And Derivatives, Min Zhang
Theses and Dissertations
A series of 24 new photoluminescent symmetric and unsymmetric -NHC pincer Pt complexes was synthesized and characterized, including collection of their 195Pt NMR chemical shifts. In total 18 new X-ray crystal structures, and photophysical studies of these photoluminescent -NHC pincer Pt complexes are reported. -NHC pincer Pt complexes were synthesized and characterized using new -NHC pincer based proligands [(RChetChetCRH3)X2, X = Cl, Br, or BPh4, where het represents imidazolyl, benzimidazolyl, and 1,2,4-triazolyl moieties; R = n-butyl, 3,3-dimethylbutyl, n-hexyl] as starting materials. A new method to synthesize Pt-Cl complexes to prevent halogen mixing was developed using tetraphenylborate salts as proligands. -NHC …
Tailoring Math Curricula For Community Colleges: A Process Approach, Ira Lindsay Mcfarland Kinard
Tailoring Math Curricula For Community Colleges: A Process Approach, Ira Lindsay Mcfarland Kinard
Theses and Dissertations
Community college instructors continue to search for effective instructional methods that promote student success in developmental mathematics courses such as intermediate algebra. According to research, mathematics is a major obstacle for students succeeding, persisting, and completing community college programs. Each student enrolled in intermediate algebra has an ACT sub-score of 16 to 18 or an ACCUPLACER sub-score of 57 to 75. Most community colleges in Mississippi use placement testing to determine the strengths and needs of students. However, students approach math with high anxiety, more than any other areas, which interferes with their learning. Research indicates that to improve students’ …
Models And Algorithms To Solve Electric Vehicle Charging Stations Designing And Managing Problem Under Uncertainty, Md Abdul Quddus
Models And Algorithms To Solve Electric Vehicle Charging Stations Designing And Managing Problem Under Uncertainty, Md Abdul Quddus
Theses and Dissertations
This dissertation studies a framework in support electric vehicle (EV) charging station expansion and management decisions. In the first part of the dissertation, we present mathematical model for designing and managing electric vehicle charging stations, considering both long-term planning decisions and short-term hourly operational decisions (e.g., number of batteries charged, discharged through Battery-to-Grid (B2G), stored, Vehicle-to-Grid (V2G), renewable, grid power usage) over a pre-specified planning horizon and under stochastic power demand. The model captures the non-linear load congestion effect that increases exponentially as the electricity consumed by plugged-in EVs approaches the capacity of the charging station and linearizes it. The …
The Effect Of Bacterial Supplementation On Black Soldier Fly Larval Growth And Development, Emilia Marjatta Kooienga
The Effect Of Bacterial Supplementation On Black Soldier Fly Larval Growth And Development, Emilia Marjatta Kooienga
Theses and Dissertations
With a growing human population, food insecurity is becoming a worldwide problem. As the search for sustainable sources of protein continues, black soldier fly larvae come to the forefront as a partial solution. Full of proteins and fats, the larvae will consume most organic matter and rapidly develop into a usable form. Supplementing black soldier fly larvae with oleaginous microbes Arthrobacter AK19 and Rhodococcus rhodochrous increases their body size by 25%, potentially accelerates their development by one day, and increases their conversion efficiency. Supplementing with Bifidobacterium breve decreased body size, slowed development, and decreased conversion efficiency, underscoring the importance of …
Modification Of Training Methods And Alarm Thresholds: Two Ways To Reduce Potential Hazardous Clinical Alarm Related Incidents, Manikantan Shanmugham
Modification Of Training Methods And Alarm Thresholds: Two Ways To Reduce Potential Hazardous Clinical Alarm Related Incidents, Manikantan Shanmugham
Theses and Dissertations
Within the healthcare system, nurses, are involved in many critical steps of the patient care process such as surgery triaging, post-procedure recovery monitoring and handoff release to a caregiver. A significant portion of their time is spent on the hospital floors where patients recover from their medical procedures. In today’s healthcare environments, multiple devices – typically monitors, ventilators, and infusion pumps – are used during said patient recovery process. Health equipment manufacturers often add alarms to medical devices, which serve a variety of purposes, ranging from simple notifications to warnings and alerts about potential hazards that require rapid action. In …
Sustainability Of Preparations Programs Initiated Through The Information Technology (It) Professionals In Health Care Program, Nena Parrish Scott
Sustainability Of Preparations Programs Initiated Through The Information Technology (It) Professionals In Health Care Program, Nena Parrish Scott
Theses and Dissertations
In 2010, the Office of National Coordinator (ONC), a branch of the federal government, launched a program called the IT Professionals in Health Care Program. The Program was intended to address the anticipated shortage of skilled workers in health information technology (HIT) and electronic health records (EHRs). According to the National Opinion Research Center (NORC, 2014), the ONC estimated a shortfall of 51,000 HIT workers over 5 years in terms of the number that would be needed to fully support health care providers and facilities in the adoption of EHRs. The growing demand for HIT professionals did not match the …
Transcriptomic Analysis Of Early B-Cell Development In The Chicken Embryo, Nikhil Krishna Nuthalapati
Transcriptomic Analysis Of Early B-Cell Development In The Chicken Embryo, Nikhil Krishna Nuthalapati
Theses and Dissertations
The chicken bursa of Fabricius is a primary lymphoid tissue important for B-cell development. Our long-term goal is to understand the role of bursal microenvironment in an early B-cell differentiation event initiating repertoire development through immunoglobulin gene-conversion in the chick embryo. We hypothesize that early bursal B-cell differentiation is guided by signals through cytokine receptors. Our theory is based on previous evidence for expression of the receptor tyrosine kinase superfamily members and interleukin receptors in unseparated populations of bursal B-cells and bursal tissue. Knowledge of the expressed genes that are responsible for B-cell differentiation is a prerequisite for understanding the …
Using The Unified Theory Of Acceptance And Use Technology To Determine Factors That Affect The Acceptance And Use Of Social Media To Advertise And Promote Agriproducts In Farmer' Communities In North Mississippi, Carlos Alberto Moreno-Ortiz
Using The Unified Theory Of Acceptance And Use Technology To Determine Factors That Affect The Acceptance And Use Of Social Media To Advertise And Promote Agriproducts In Farmer' Communities In North Mississippi, Carlos Alberto Moreno-Ortiz
Theses and Dissertations
The present empirical study examined factors that affect the acceptance and use of social media platforms by farmers and vendors in farmers’ communities in North Mississippi for marketing their small farm businesses. Based on the Unified Theory of Acceptance and Use of Technology (UTAUT), structural equations modeling was used to examine several relationships: (1) the influence of performance expectancy (PE) on behavioral intention (BI) to use social media; (2) the influence of effort expectancy (EE) on BI; (3) the influence of social influence (SI) on BI; (4) the influence of facilitating conditions (FC) on actual use (USE) of social media; …
Who Does It Best? Towards Understanding Virtual Accountability Practices In Public, Nonprofit And Private Organizations, Asya Besova Cooley
Who Does It Best? Towards Understanding Virtual Accountability Practices In Public, Nonprofit And Private Organizations, Asya Besova Cooley
Theses and Dissertations
The primary purpose of this dissertation is to comparatively review virtual accountability practices in public, private and nonprofit organizations, using the hospital industry as a case of analysis. Through the quantitative assessment of organizational websites, this study provides empirical evidence that there are statistically significant differences in how organizations conduct their virtual accountability practices. Nonprofits are leading the way in their overall virtual accountability practices. They are more likely to score higher on engagement, performance and mission dimensions of virtual accountability practices. Private organizations have the lowest scores on every dimension, except for accessibility. Public organizations have the strongest scores …
Healthcare Experiences Of Transgender Mississippians: A Qualitative Study, Micah D. King
Healthcare Experiences Of Transgender Mississippians: A Qualitative Study, Micah D. King
Theses and Dissertations
For this study, in-depth, semi-structured interviews were conducted with 16 transgender adults who lived, or had previously lived, in Mississippi and sought healthcare services in the state. The questions asked focused on identifying the barriers to care that these individuals faced as well as the strategies for navigating the barriers they employed. Recommendations for providers were also considered.
History, Status, And Resource Selection Of The American Black Bear In Mississippi, Stephanie Lynn Simek
History, Status, And Resource Selection Of The American Black Bear In Mississippi, Stephanie Lynn Simek
Theses and Dissertations
Historically, black bears occurred throughout Mississippi but by 1932, <12 bears remained. Repatriation in neighboring states and conservation efforts in Mississippi have led to the recolonization of at least 2 subspecies (U. a. luteolus and U. a. americanus) of black bears in the state. I compiled available data to provide a synthesis of the history, current status, and management of black bears in Mississippi. Additionally, I used global positioning data collected from radio collared bears to determine the influence of distance to source population, cover type, distance to roads, distance to water, wetland reserve program areas, and human population density on black bear resource selection at various spatial scales. I studied characteristics of space use and resource selection of recolonizing bears in the Mississippi Alluvial Valley (Delta). I assessed the influence of environmental parameters at the female core annual home-range (using 50% kernel density estimator) and male and female seasonal and annual home-ranges (95% kernel density estimator). Distance to source population and distance to roads had significant influence at the core female home-range scale. I found a sex-based difference in annual and seasonal home-ranges. I also found that bears exhibited response to and selection for specific resources with an affinity toward hardwood stands, particularly young-aged hardwoods. My research illustrates the importance of analyzing resource selection at multiple scales to gain a full understanding of parameters that influence the recolonization of a bear population.
Impact Of Walnuts On Blood Pressure In A Small Convenience Sample Of African Americans In Mississippi, Camille N. Barnes
Impact Of Walnuts On Blood Pressure In A Small Convenience Sample Of African Americans In Mississippi, Camille N. Barnes
Theses and Dissertations
Hypertension is the cause of about 7.5 million deaths per year, globally. More than 40% of African Americans are diagnosed with hypertension. The aim of this study was to examine the effects of walnut consumption on blood pressure in a small convenience sample of African Americans in Mississippi. Fifty subjects participated in the study. Blood pressure was measured once a week for three weeks prior to the initiation of the intervention for a baseline data of the subjects’ normal blood pressure. During the 6-week intervention, the participants consumed a package of walnuts, daily. Blood pressure was measured weekly. The results …
Implementation And Evaluation Of A School-Based Anti-Tobacco Program In Mauritius: A Pilot Study To Assess The Usefulness And Reliability Of A Tobacco Use Prevention Education Instrument, Shariah Hussenbocus
Implementation And Evaluation Of A School-Based Anti-Tobacco Program In Mauritius: A Pilot Study To Assess The Usefulness And Reliability Of A Tobacco Use Prevention Education Instrument, Shariah Hussenbocus
Theses and Dissertations
Tobacco use among Mauritian adolescents has increased steadily since 2008. Currently, Mauritius has not implemented any school-based anti-tobacco program and there is no instrument to assess the effectiveness of existing anti-tobacco school policies. Since the first cigarette can rapidly lead to nicotine dependence, targeted interventions must be assessed before established patterns of smoking appear. This study evaluated a tobacco use prevention education instrument to determine the effectiveness of a school-based anti-tobacco program. 26 male students completed a survey before and after receiving anti-tobacco lessons. Smoking initiation age could not predict likelihood of tobacco addiction (r(12)=0.320, p=0.311). However, after receiving the …
Individual Differences In Creative Cognition, Sarah K. Craig
Individual Differences In Creative Cognition, Sarah K. Craig
Theses and Dissertations
Creativity is increasing in value worldwide, but the processes underlying various creative abilities remain ambiguous. The most frequently used assessments of creativity (i.e., divergent thinking tasks; creative problem-solving tasks) differ in surface features and are also rarely examined together. These inconsistencies, in addition to mixed findings in the literature, have caused considerable debate among creativity researchers concerning the particular roles of independent or dual processes that lead to success on different creativity tests. The present study expounded upon these mixed findings using a factor analytic method. The results indicated that individual differences in working memory and fluency ability impact performance …
Investigating The Postmortem Microbial Community Structure, Function, And Transmigration As It Pertains To Forensic Science And Public Health, Zachary Melburn Burcham
Investigating The Postmortem Microbial Community Structure, Function, And Transmigration As It Pertains To Forensic Science And Public Health, Zachary Melburn Burcham
Theses and Dissertations
Postmortem microbial communities are being extensively studied for their utility in forensic science investigations. Microbial communities associated with decomposition, necrobiome, have been shown to react in a predictable manner to the postmortem interval or time since death. These communities are affected by environmental factors such as temperature and humidity which can cause variabilities in the community structural and functional turnover. However, the transmigration patterns across organs and functional activity as decomposition progresses is still relatively unknown in a highly controlled system. This study aims to describe the community structural changes that take place during a highly controlled decomposition in mice …
Parent And Child Perceived Coping Socialization During Peer Conflict: A Qualitative Study, Janet W. Kwan
Parent And Child Perceived Coping Socialization During Peer Conflict: A Qualitative Study, Janet W. Kwan
Theses and Dissertations
Despite budding research on parent-child discrepant perceptions of a child’s psychosocial functioning, the potential difference in individual perception of coping socialization is unclear. Further, literature suggests the onset of various impulse-control disorders occurs around middle childhood. Thus, the current study used a phenomenological approach and thematic analysis to examine perspectives of coping socialization, identify intended take away messages, and examine the perceived impact of inconsistent understanding of the interaction. Results indicated both parents and children use verbal and physical cues to understand one another during coping socialization and that their lab discussion was representative of their typical interactions. Themes emerged …
Prediction Of Energy Expenditure From Accelerometers During Physical Activity In Adults With Down Syndrome: The Effect Of Accelerometer Placement, Anthony T. Allred
Prediction Of Energy Expenditure From Accelerometers During Physical Activity In Adults With Down Syndrome: The Effect Of Accelerometer Placement, Anthony T. Allred
Theses and Dissertations
There is a need to examine the difference in the relationship between oxygen uptake (VO2) and output from hip- and wrist-worn accelerometers in adults with Down syndrome (DS). The purpose of this study is to identify if that relationship is different between adults with and without DS. Hip- and wrist-worn accelerometer accuracy was also assessed. The sample included 16 adults with DS (10 men; age 31±15 years) and 19 adults without DS (10 men; age 24±6 years). We measured VO2 with a portable spirometer and accelerometer output (Vector Magnitude [VM]) with a hip- and a wrist-worn accelerometer. VM and group …
Smoke Signals: New Contexts For The Emergence, Spread, And Decline Of Effigy Pipes In Southeastern North America, A.D. 1000-1600, Charles Van De Kree
Smoke Signals: New Contexts For The Emergence, Spread, And Decline Of Effigy Pipes In Southeastern North America, A.D. 1000-1600, Charles Van De Kree
Theses and Dissertations
The cultural significance of effigy pipes among southeastern groups during the Mississippian period (A.D. 1000-1600) has yet to be fully understood. Recent studies, however, have provided new archaeological contexts for framing explanations of their possible use and distribution among such groups. Apart from conjectures about their use as ceremonial objects, selection for effigy pipes in the Mississippian Southeast was directly related to fluctuating environmental and demographic conditions under which such objects were manufactured and distributed. These conditions provided the appropriate context for their emergence as costly signaling devices through which elite or special interest groups advertised fitness levels, typically expressed …
Strain Rate Effects On Energy Dissipation During Hypervelocity Penetration Of Polymeric Materials, Michael Hunter Bowering
Strain Rate Effects On Energy Dissipation During Hypervelocity Penetration Of Polymeric Materials, Michael Hunter Bowering
Theses and Dissertations
Energy dissipation during penetration is an important consideration in materials selection for lightweight armoring to protect against hypervelocity impacts (HVIs). Impact-induced glass transition in polymeric materials has been observed to increase energy dissipation during penetration. Incorporating unconventional armor materials like polymers could improve performance in these types of applications. A series of HVIs was performed, with impact velocities over the range of 2-7 km/s, on samples of ultra-high molecular weight polyethylene and poly(methyl methacrylate). A relationship between back face debris cloud velocity and impact velocity was developed for each material. Damage zone sizes were compared, offering insights into the effects …
System Dynamics Model Of Necrotic Enteritis And Its Predisposing Factors In Broilers, Yu-Bin Chou
System Dynamics Model Of Necrotic Enteritis And Its Predisposing Factors In Broilers, Yu-Bin Chou
Theses and Dissertations
Necrotic enteritis (NE) caused by Clostridium perfringens type A is an important bacterial enteric disease of global broiler production. However, the dynamic interactions of NE and its predisposing factors are not fully presented by current studies. By using the System Dynamics (SD) Model, the epidemiological changes in susceptible-infected-removed models of NE and avian coccidiosis and their interactions in one or multiple grow-out cycles was established; meanwhile, the growth performance was measured by the average weights of infected and non-infected populations at harvest were estimated. The SD model provided direct and persuasive outcomes of the epidemiology and ecology of NE compared …
Temporary Trade Barriers Investigation And Duty Imposition In The Forest Products Industry, Xufang Zhang
Temporary Trade Barriers Investigation And Duty Imposition In The Forest Products Industry, Xufang Zhang
Theses and Dissertations
With accelerating globalization, many industries have faced continuous pressure from rising importation. In the forest products industry, international trade has been intervened by either a tariff on roundwood or a temporary trade barrier on wood and paper products. In this dissertation, three studies are conducted to examine the patterns and impacts of these tariffs and trade barriers. In the first study, the adoption of antidumping and countervailing duty as a temporary trade barrier on forest products trade is examined. Initially, a two-step sample selection model is employed to identify determinants of trade barrier imposition by all the countries, and additionally, …
The Effect Of The Degree Of Centralization Of Control Of Community Colleges On Core Indicators Of Performance Of The Carl Perkins Act, Jake Michel
Theses and Dissertations
This research study was designed to help illuminate if there is a relationship between the quality of career and technical education programs from centralized and decentralized-controlled systems in relation to the level of authority exerted by state governing/coordinating boards over the community college system. This study included data from the 50 states that are part of the United States of America. This study used a quasi-experimental, nonequivalent design. This study did not include randomly selected groups and was a nonequivalent control group design. The independent variables included: centralized or decentralized governance, median household income, the percent of community colleges that …
The Effects Of A Web-Based Instructional Program: Promoting Student Growth In Reading And Mathematics Achievement, Penelope Pritchett Hill
The Effects Of A Web-Based Instructional Program: Promoting Student Growth In Reading And Mathematics Achievement, Penelope Pritchett Hill
Theses and Dissertations
As advances in technology allowed national and state education assessments to be administered digitally, many school districts transitioned to computer-based instructional programs and assessments to improve student achievement and better prepare students for high-stakes computerized assessments. One such rural public school district in Mississippi implemented a supplemental web-based instructional program, i-Ready, for the first time in the 2017-2018 school year. The purpose of this study was (a) to investigate the effects of the i-Ready program on student achievement in Grades 4 – 5 reading/language arts and mathematics and (b) to determine if there were significant differences in growth (from pretest …
Investigation Of A Low-External-Input Sustainable Rice Production System To Identify Ecosystem Services Towards Adoption Costs And Benefits, Alexandra Gwin Firth
Investigation Of A Low-External-Input Sustainable Rice Production System To Identify Ecosystem Services Towards Adoption Costs And Benefits, Alexandra Gwin Firth
Theses and Dissertations
This study investigated a potentially sustainable rice production system in the Mississippi Alluvial Valley (MAV) that uses ecological principles to enhance environmental quality at the field scale. It was hypothesized annual flooding of rice fields to create waterbird habitat would benefit soil health, providing agronomic benefits to the farmer. Two sites were selected: a low-external-input-sustainable-agriculture (LEISA) system with flooded (LF) and nonlooded (LN) fields and a conventional site with flooded (CF) and nonlooded (CN) fields. Soil microbial diversity and nutrient content were quantified and compared. Camera traps were used to document bird activity for estimates of fecal matter input. Soil …
Mechanical Property Development And Numerical Modeling Of Ultra-High Performance Concrete Focused On Isothermal Curing Conditions, Thomas Allard
Mechanical Property Development And Numerical Modeling Of Ultra-High Performance Concrete Focused On Isothermal Curing Conditions, Thomas Allard
Theses and Dissertations
Ultra-high performance concrete (UHPC) has progressively gained interest because of its favorable strength and durability properties. Literature shows that curing temperature has a significant effect on the resultant mechanical properties of UHPC, generally resulting in increased compressive strength. However, limited datasets are currently available to ascertain the degree of change related to compressive strength as a function of curing temperature and conditions. This study investigates the effect of isothermal and submerged curing temperature conditions, ranging from 10°C to 90°C, on the compressive strength and elastic modulus development of UHPC and generates a numerical model to capture these effects. The extent …
Morpho-Physiological And Genetic Characterizations Of Rice Genotypes For Abiotic Stresses, Salah Hameed Jumaa
Morpho-Physiological And Genetic Characterizations Of Rice Genotypes For Abiotic Stresses, Salah Hameed Jumaa
Theses and Dissertations
Holistic and growth stage-specific screening is needed for identifying tolerant genotypes and for formulating strategies to mitigate the negative effects of abiotic stresses on crops. The objectives of this study were to characterize the genetic variability of 100 rice lines for early-season vigor, growth and physiological plasticity, and drought and temperature tolerance. Five studies were conducted to accomplish these objectives. In study 1 and 2, 100 rice genotypes consisting of several cultivars and experimental breeding lines were characterized for early-season vigor using several shoot and root morphological, physiological, and yield related traits. In study 3, low- and high-temperature tolerance assessed …
Overall Sound Pressure Level Contours Of Jet Noise By Cartesian Acquisition Grid, Stephen Perry
Overall Sound Pressure Level Contours Of Jet Noise By Cartesian Acquisition Grid, Stephen Perry
Theses and Dissertations
Noise pollution from aircraft is an ever-increasing issue in urban areas. Venting exhaust over body panels could reduce perceived sound pressure levels (SPL) by absorption or redirection. This paper investigates the farield spectra and sound propagation of a flat panel held near an axis-symmetric supersonic jet. In contrast to typical radial acquisition, Overall sound pressure level (OASPL) contours are constructed from a 9 by 23 cartesian acquisition gird, spaced equidistantly at 3.67 Jet Diameters (Dj). Three panel configurations each at three nozzle pressure ratios (NPR) are discussed. Additionally, a source finding algorithm is developed and shows source locations by frequency. …
Effect Of Stress Mindset And Adverse Childhood Experiences On College Students' Academic Success And Psychological Well-Being, Alice Cathryne Long
Effect Of Stress Mindset And Adverse Childhood Experiences On College Students' Academic Success And Psychological Well-Being, Alice Cathryne Long
Theses and Dissertations
Adverse life events that occur in childhood may decrease an individual’s ability to effectively cope with challenges throughout their lives. The proper management of stress is essential to avoid problems that can crop up in all areas of life. College students who employ stress management tactics are better able to achieve well-being and academic success. This study examined the potential moderating association between “from within” coping supports or internal risk factors and academic success, mental health, and resilience qualities. Using a sample of college students at a large public university in the southeastern United States, this study demonstrates that viewing …
Effect Of Supplemented L-Arginine On Reproductive Parameters Of Gestating Mares, Lauren B. Hodge
Effect Of Supplemented L-Arginine On Reproductive Parameters Of Gestating Mares, Lauren B. Hodge
Theses and Dissertations
Studies that have investigated the effects of L-arginine supplementation on blood flow to the uterus have not determined the optimal time of supplementation. No research has been conducted on nitrite concentration in the placenta and blood of mares supplemented with L-arginine. L-arginine is a precursor of NO and therefore, should increase nitrite production both in blood as well as in expelled placenta. Presence of nitrites would also be indicative of increased angiogenesis. No studies have addressed placental efficiency in mares supplemented L-arginine. Placental efficiency is vital for production of a healthy foal. Therefore, to address these short-comings the objectives of …
Effects Of Green Tree Retention On Birds Of Southern Pine Plantations, Michael Clay Parrish
Effects Of Green Tree Retention On Birds Of Southern Pine Plantations, Michael Clay Parrish
Theses and Dissertations
In the southern United States, institutional forest owners engaged in forest certification programs often retain unharvested or less-intensively harvested vegetation when clearcut harvesting intensively managed pine (Pinus spp.) forests (“IMPFs”), a practice called ‘green tree retention’. I investigated resultant patterns of land cover and retained structural elements in recently-harvested IMPF management units (“MUs”) and related them to avian biodiversity to provide information to support harvest decisions. First, to provide forest managers baseline data on retention, I screen-digitized land cover on 1187 MUs (totaling 51646 ha) and characterized green tree retention levels and internal land cover attributes (Chapter 2). I found …