Digital Commons Network^™

Making It To The Phd: Gender And Student Performance In Sub-Saharan Africa, Monica Fisher, Violet Nyabaro, Ruth Mendum, Moses Osiru

All Peer-Reviewed Publications

Women's underrepresentation in science, technology, engineering, and mathematics (STEM) impedes progress in solving Africa's complex development problems. As in other regions, women's participation in STEM drops progressively moving up the education and career ladder, with women currently constituting 30% of Africa's STEM researchers. This study elucidates gender-based differences in PhD performance using new survey data from 227 alumni of STEM PhD programs in 17 African countries. We find that, compared to their male counterparts, sampled women had about one less paper accepted for publication during their doctoral studies and took about half a year longer to finish their PhD training. …

Cover Crop Performance And Potential Benefits To Wildlife In The Southern Piedmont Of South Carolina, Sean Carlisle Byrd

All Theses

The Southern Piedmont region of South Carolina has been historically a mixture of forests, grasslands, and agroecosystems. While forests and grasslands have declined due to development, agroecosystems may be able to provide habitat for summer bird species in the region. Cover cropping is a practice in conservation agriculture that can conserve and improve soil resources, yet adoption is low in the Southeast due to long cash crop growing seasons and a lack of technical knowledge on regionally appropriate cover crops. Two field experiments were conducted in 2019 on a sandy loam in Pendleton, South Carolina to determine summer cover crop …

Nebraska School Gardens And The Potential For Science, Technology, Engineering, And Math Learning, Erin Ingram, Jenny Keshwani

Journal of Extension

School-based growing spaces support student engagement in science, technology, engineering, and mathematics (STEM) learning through authentic agricultural pursuits. We conducted a survey of Nebraska schools to characterize existing school-based growing spaces and to identify challenges limiting garden-based STEM learning. Our findings confirm the use of school-based growing spaces for kindergarten through 12th-grade STEM instruction, especially in the sciences. Opportunities for technology and engineering experiences are currently limited, and additional professional development support is needed to broaden garden-based STEM learning efforts. Our findings are relevant to current and future Extension efforts supporting school gardens, especially in rural agricultural communities.

Nurses' Attitudes Toward Physician-Assisted Suicide, Cheyenne Star Lowrey-Lagrone

The Eleanor Mann School of Nursing Undergraduate Honors Theses

Physician-assisted suicide, or PAS, is end-of-life option in which patients self-administer physician-prescribed lethal medication to end their life. Nurses' own interpretations and understandings of the legalities, ethical dilemmas, and factors that influence their attitudes can be analyzed to determine the nurses’ role in the support or opposition of the practice. Although nurses do not have an active role in PAS, they play a pivotal role in patient advocacy and education. This paper analyzes the factors that contribute to nurses’ attitudes toward the practice, along with the benefits of education of this topic going forth.

Pre-Veterinary Medicine Advising Tips, Samantha Super

Honors Projects

This document provides tips and recommendations for advisors to better help their pre-veterinary medicine students. After reviewing numerous resources and conducting a survey with GVSU advisors and pre-veterinary students, I identified gaps in knowledge and compiled tips and information about preparing for veterinary school to increase the advisors' knowledge for the benefit of current of future GVSU pre-veterinary students. This document discusses the general path of veterinary school, how to advise students on obtaining experiences, regional and national symposiums that students and advisors can attend, things to consider when preparing for and applying for veterinary schools, specific advice for students …

Improving Health Care Accessibility Among Geriatric Patients In Rural Communities, Capriana Calvachi

Honors Projects

The following literature review and analysis compiles information regarding ways to improve rural geriatric healthcare accessibility through the use of interprofessional care and outreach. I also wish to bring to light the various deficiencies often seen in this realm of care, and the reasons behind the inadequate rural physician retention rates. Using this background information, I compiled various collaborative approaches which seek to ease the strain faced by the healthcare system and its elderly patients.

Improving healthcare accessibility through the use of interprofessional care and outreach is an essential facet in geriatric medicine. By exploring the deficiencies of geriactric healthcare …

Review: Influence Of Meteorological Conditions And Algal Community Composition On Hypolimnetic Hypoxia, Ian P. Stone

Honors Projects

Hypoxia has been a central focus of research regarding water quality impairments throughout the world in the past century. The fresh and coastal marine waters affected by hypoxia are of great importance due to the ecosystem services and species habitat they provide, and because of the regional economic activity spurned by these waters in return. As such, a great deal of research effort has been devoted to elucidating the causes and ecological effects of hypoxia with the hopes of remediating the issue. The bulk of this effort has been directed at the role of anthropogenic allochthonous nutrient loading and algal …

Clinical Update For Physical Therapists: Coagulopathy And Covid-19, Kathleen M. Lukaszewicz, Ellen Hillegass, Michael Puthoff, A. Kate Macphedran

Physical Therapy Faculty Research and Publications

Physical therapists have a unique role in both prevention of venous thromboembolism (VTE) through the promotion of early mobility and physical activity and diagnosis through discovery of signs and symptoms of VTE. This Perspective updates clinicians on the latest information regarding pathophysiology of coagulopathy associated with COVID-19 and applies VTE clinical practice guidelines to COVID-19 in order to provide guidance on physical therapist management.

Dietary Regulation Of Successful Aging, Aubree L. Hawley

Graduate Theses and Dissertations

The current growth of the older population is unprecedented in U.S. history. Chronic disease and functional limitation commonly develop prior to old age, leading to prolonged physical disability and decreased well-being. The development of chronic disease and loss of independence is associated with lean body mass (LBM) loss and fat mass gain beginning in middle age. Therefore, it is important to identify modifiable factors to mitigate deleterious shifts in body composition to promote successful aging (SA). The concept of SA is associated with longevity, the absence of disease and disability, and subjective components of well-being, however, an operational definition has …

Impacts Of Postharvest Temperature Exposure Profiles On Rice Physicochemical Properties, Seth Graham-Acquaah

Graduate Theses and Dissertations

Heated-air drying followed by tempering (HAT) is effective for increasing rough-rice drying rates without compromising head rice yield (HRY). However, heat exposure could affect rice end-use properties. Hypothesizing that the total amount of heat exposure incurred by rice during heated-air drying determines the trend and magnitude of changes in end-use properties, this dissertation sought to 1) characterize the effects of drying and tempering regimen on changes in end-use properties, 2) derive an index to quantify and compare the amount of heat exposure that rice kernels incur during active drying and, 3) relate values of this index to changes in rice …

Application Of X-Ray Imaging And Glass Transition Principles In Understanding Rice Kernel Fissure Formation, Zephania R. Odek

Graduate Theses and Dissertations

Rice kernels with internal fractures of the endosperm, fissures, tend to break during milling, leading to head rice yield (HRY) reductions. Minimizing kernel fissuring is thus an important goal of the rice industry. To minimize fissuring during the drying process, a better understanding of the fissuring process and the kinetics thereof is required. The goal of this research was to use X-ray imaging and glass transition principles to better understand rough rice kernel fissuring. First, because the instance when the fissuring process is initiated and completed during the drying process is not well known, an X-ray imaging setup that allows …

Molecular Genetic Analysis Of Drought Resistance And Productivity Traits Of Rice Genotypes, Yheni Dwiningsih

Graduate Theses and Dissertations

Rice (Oryza sativa L.) is the staple food for a majority of the world’s population, and uses 30% of the global fresh water during its life cycle. Drought at the reproductive stage is the most important abiotic stress factor limiting grain yield. The United States is the third largest exporter of rice, and Arkansas is the top rice-producing state. The Arkansas rice-growing region in the Lower Mississippi belt is among the 10 areas with the highest risk of water scarcity. Adapted U.S. rice cultivars were screened for drought resistant (DR) traits to find sources for breeding U.S. rice cultivars for …

Anti-Inflammatory Properties Of Blackberry Phenolic And Volatile Compounds, Pauline Morin

Graduate Theses and Dissertations

Berries are known for many health benefits including anti-inflammatory properties that lower risks of chronic diseases. These properties have been linked to high concentrations of phenolic compounds, especially anthocyanins. However, the present study hypothesized that volatiles could contribute to the berries’ bioactive properties. Thus, the objectives of this research are to profile the phenolic and volatile composition of 16 blackberry genotypes harvested at the Fruit Research Center of the University of Arkansas and to evaluate the antiinflammatory capacities of three selected genotypes on inflamed cells. Phenolic and volatile profiles were evaluated using chromatographic techniques. The three genotypes A2528T, A2587T and …

Effect Of Feed Additives And Toxic Elements On Swine Growth Performance, Nutrient Digestibility, Immune Function And Reproductive Performance, Richard A. Mudarra Hernández

Graduate Theses and Dissertations

To evaluate the effects of peptide in combination of zinc oxide (Zno) or acidifiers (Exp 1), and gossypol (G) from cottonseed meal (CSM) ( Exp 2&3) on growth performance, complete blood cell counts (Exp 1, 2&3), nutrient digestibility (Exp 1), plasma gossypol (Exp 2&3) and semen quality (Exp 3), weaned pigs (Exp 1), growing gilts (Exp 2) and growing boars (Exp 3) were randomly allotted to dietary treatments. Treatments for Exp 1 during phase 1&2 were: (1) Positive Control (PC), formulated to meet NRC (2012) nutrient requirements; (2) Negative control (NC), fish meal was reduced to achieve -0.13% SID lysine; …

Effects Of Commercial Feed Additives On Growth Performance And Gut Microbiota Of Nursery Pigs, Xiaoyuan Wei

Graduate Theses and Dissertations

To secure animal welfare and maximum production, feed additives are often added to nursery pig diets to increase nutrition digestibility, enhance intestinal health, and prevent or mitigate disease, with the ultimate goal of improving growth performance. This thesis performed a longitudinal analysis using next-generation sequencing to investigate the dynamic changes of gut microbiota in weaned pigs fed commercial feed additives. Chapter II was used to evaluate the effects of organic acid mixture on growth performance and gut microbiota of weaning pigs. This study demonstrated that the inclusion of 0.035% (SBA0.035) or 0.070% (SBA0.070) sodium butyrate in a diet containing 0.5% …

Association Mapping For Soybean (Glycine Max L. Merr.) Protein And Oil Content, Joseph Najjar

Graduate Theses and Dissertations

Soybean [Glycine Max (L.) Merrill] is an important economic crop because of its high content of seed protein and oil. Seed oil and protein content are quantitative inherited traits. The genetics of seed protein and oil levels have been extensively studied, with 367 QTL reported for protein and 475 QTL reported for oil to date. Validation of such QTLs, and identification of easily-automatable molecular markers around these QTL will aid the progression of breeding for such traits. The focus of this research was to discover novel and verify previously reported QTL related to protein and/or oil content via Genome-Wide Association …

Evaluation Of Different Ensiling Methods On Storage And Feeding Value Of The Residual Material From Edamame Soybean Processing, Ellen Herring

Graduate Theses and Dissertations

Use of organic waste material by ruminant animals from food processing operations potentially reduces costs and reduces environmental issues from disposal of these residues. Therefore, 2 experiments were conducted to evaluate the storage and feeding value of residual from edamame soybean processing for ruminant animals. Two types of waste streams, waste during harvest time and waste from processing stored material, were ensiled (on a laboratory scale) using various methods and effects on post-ensiling nutritive value were examined. Material from both waste streams were ensiled either without wilting or after wilting; each moisture level was ensiled with and without an inoculant. …

Evaluation Of Selected Bacillus Direct-Fed Microbial Candidates In Reduced Energy Diets On Live Performance, Carcass Characteristics, And Foot Pad Dermatitis, Kyle Teague

Graduate Theses and Dissertations

Bacillus spp. are ubiquitous, Gram-positive, spore forming bacteria that are commonly recovered from the environment and gastrointestinal tract (GIT) of poultry. These spores are capable of withstanding harsh condition such as feed pelletization, which facilitates inclusion in poultry feeds. Once ingested by the bird, spores germinate into metabolically active vegetative cells which can produce extracellular enzymes which can hydrolyze otherwise indigestible components of the feed. Soybean meal (SBM) is the gold standard vegetable protein source for non-ruminant animals worldwide and is included in practically all poultry diets in the United States at levels ranging from 10 to more than 30%. …

Effects Of Infection Of The Protist Parasite, Dermomycoides Sp., In Dusky Gopher Frog Tadpoles, Jaime Smith

Master's Theses

Infections of the protist parasite, Dermomycoides sp. are thought to have caused several years of low recruitment in the dusky gopher frog (Rana sevosa) populations. I evaluated the effects of density of the infective zoospores, host developmental stage, and tadpoles' ability to acquire resistance to Dermomycoides sp. on dusky gopher frog tadpoles. Tadpoles were exposed to zoospore densities of 0, 250, 500, and 750 zoospores/µL at Gosner stage 25, and we found no significant differences among treatments in tadpole mortality. In evaluating susceptibility by development stage, I exposed R. sevosa to 50 zoospores/µL as eggs, embryos, hatchlings, and …

Pathology Findings And Correlation With Body Condition Index In Stranded Killer Whales (Orcinus Orca) In The Northeastern Pacific And Hawaii From 2004 To 2013, Stephen A. Raverty, Judy St. Leger, Dawn P. Noren, Kathy Burek Huntington, David S. Rotstein, Francis M.D. Gulland,, Deborah A. Duffield, Multiple Additional Authors

Biology Faculty Publications and Presentations

Understanding health and mortality in killer whales (Orcinus orca) is crucial for management and conservation actions. We reviewed pathology reports from 53 animals that stranded in the eastern Pacific Ocean and Hawaii between 2004 and 2013 and used data from 35 animals that stranded from 2001 to 2017 to assess association with morphometrics, blubber thickness, body condition and cause of death. Of the 53 cases, cause of death was determined for 22 (42%) and nine additional animals demonstrated findings of significant importance for population health. Causes of calf mortalities included infectious disease, nutritional, and congenital malformations. Mortalities in sub-adults were …

Hormonal Responses To Seasonal Thermal And Ecological Stressors In Japanese Macaques (Macaca Fuscata), Lilianne Nelson

Masters Theses

Relative to most primate species, Japanese macaques (Macaca fuscata) experience extreme seasonal variation in thermal and ecological stressors that can impact energetic demands. To cope with these environmental changes, levels of metabolic hormones, such as cortisol and triiodothyronine, fluctuate to facilitate energetic adjustments. While previous research in primates has investigated thermal and ecological stressors individually, a combined assessment of these stressors alongside hormone levels can provide a more holistic understanding of the relationship between a primate’s thermoregulation, energetic balance, and stress. The goals of this study were to determine the effects of season, temperature and ecological stress on …

Meta-Analysis Of The Association Between Acute Particulate Matter Exposure And Cardiovascular Disease, Issa El-Kildani

Masters Theses

Cardiovascular disease, which involves a wide range of conditions, including narrowed or blocked coronary arteries, has remained the leading cause of death in the United States for over 50 years. The majority of cardiovascular conditions are preventable, which can be identified through risk factors. However, maintaining healthy life choices can be difficult for most Americans, as the vast majority live in populated urban cities. Urban life can pose hazardous conditions to individuals, especially air pollution. Air pollution includes gaseous pollutants, such as carbon monoxide, nitrogen oxides, ozone and sulfur dioxide, and particulate matter. Of these pollutants, particulate matter has become …

Drivers Of Decadal Vegetation Change In Northern Alaska, Jacob Allen Harris

Masters Theses

The Arctic is experiencing rapid climate change. This research documents vegetation change near Atqasuk and Utqiaġvik, Alaska. At each location, 30 plots distributed in a matrix across the landscape, were sampled annually from 2010 to 2019 using a point frame. For every encounter we recorded the height and classified it into eight broad functional groups (deciduous shrubs, evergreen shrubs, forbs, graminoids, bryophytes, lichens, litter and standing dead vegetation); for vascular plants we also identified the species. We found a consistent increase in plant stature and cover over time which was dramatic at Atqasuk. Graminoid cover and height increased at both …

Laboratories Of Exclusion: Medicaid, Federalism & Immigrants, Medha D. Makhlouf

Faculty Scholarly Works

Medicaid’s cooperative federalism structure gives states significant discretion to include or exclude various categories of immigrants. This has created extreme geographic variability in immigrants’ access to health coverage. This Article describes federalism’s role in influencing state policies on immigrant eligibility for Medicaid and its implications for national health policy. Although there are disagreements over the extent to which public funds should be used to subsidize immigrant health coverage, this Article reveals that decentralized policymaking on immigrant access to Medicaid has weakened national health policy. It has failed to incentivize the type of state policy experimentation and replication that justifies federalism …

The Regulation Of Commercial Speech: Can Alternative Meat Companies Have Their Beef And Speak It Too?, Eryn Terry

Vanderbilt Journal of Entertainment & Technology Law

Would you eat a hamburger that was made in a petri dish? Consumers may have this option soon as laboratory-grown meat begins to hit supermarket shelves. Laboratory-grown meat is made from animal stem cells that eventually transform into primitive fibers and tissue within the confines of a petri dish. Although a lot remains unknown about laboratory-grown meat, consumers can think of it as meat production without the farm. How might consumers react to meat labels indicating that their products were made in a petri dish? Laboratory-grown meat companies have yet to find out, as some states have passed laws that …

Imparting 3d Representations To Artificial Intelligence For A Full Assessment Of Pressure Injuries., Sofia Zahia

Electronic Theses and Dissertations

During recent decades, researches have shown great interest to machine learning techniques in order to extract meaningful information from the large amount of data being collected each day. Especially in the medical field, images play a significant role in the detection of several health issues. Hence, medical image analysis remarkably participates in the diagnosis process and it is considered a suitable environment to interact with the technology of intelligent systems. Deep Learning (DL) has recently captured the interest of researchers as it has proven to be efficient in detecting underlying features in the data and outperformed the classical machine learning …

The Green House Nursing Home Model: The Gh Elements And Their Impact On Quality Of Care In Nursing Homes., Deborah Kaminka Niyongabo

Electronic Theses and Dissertations

Nursing homes (NHs) have been described as hospital-like facilities where residents are more likely to experience isolation or abuse. The Green House (GH) model is a type of culture change which focuses on deinstitutionalizing traditional NHs to provide better quality of care and quality of life to NH residents. The two main objectives of this study are: to describe the GH model and its elements and to identify which GH elements impact the quality of care. This study also seeks to identify organizational theories used in the GH analysis. The next objective is to analyze the impact of the GH …

Assaults On Law Enforcement Officers: A Spatial And Theoretical Analysis Through Social Disorganization., Brian Keith Simpkins

Electronic Theses and Dissertations

The purpose of the present study was to gain a better understanding of assaults on law enforcement officers to identify correlations and spatial concentrations related to theoretical constructs of social disorganization. The present study was based on official assault on law enforcement officer data from a major metropolitan area within a southeastern state for the years 2010-2019. In addition to bivariate and multivariate statistical testing (e.g., Pearson correlation coefficient and multiple linear regression), multiple spatial analyses were utilized to understand the statistical significance, visualize results, and compare to previous theoretical explanations of crime concentration. The findings revealed that assaults on …

Modified-Half-Normal Distribution And Different Methods To Estimate Average Treatment Effect., Jingchao Sun

Electronic Theses and Dissertations

This dissertation consists of three projects related to Modified-Half-Normal distribution and causal inference. In my first project, a new distribution called Modified-Half-Normal distribution was introduced. I explored a few of its distributional properties, the procedures for generating random samples based on Bayesian approaches, and the parameter estimation based on the method of moments. The second project deals with the problem of selection bias of average treatment effect (ATE) if we use the observational data. I combined the propensity score based inverse probability of treatment weighting (IPTW) method and the directed acyclic graph (DAG) to solve this problem. The third project …

Evaluating The Effects Of Pcbs In Non-Alcoholic Fatty Liver Disease & Diabetes And The Role Of Ahr In Regulating The Hepatic Proteome And Lipid Metabolism., Jian Jin

Electronic Theses and Dissertations

Polychlorinated biphenyls (PCBs) are persistent organic pollutants associated with non-alcoholic fatty liver disease (NAFLD) and diabetes. Based on their ability to activate the aryl hydrocarbon receptor (AhR), PCBs are subdivided into two classes: dioxin-like (DL) and non- dioxin-like (NDL) PCBs. This study not only evaluated the chronic effect of DL PCBs (PCB126), NDL PCBs (Aroclor1260 mainly contains NDL), and the DL/NDL PCB mixture (PCB126/Aroclor1260 mixture) on liver, but also explored the acute hepatic effects of DL PCB and potential mechanisms in NAFLD and the role of AhR in regulating hepatic proteome and lipid metabolism, and whether the process independent of …