Digital Commons Network^™

Alfalfa Response To Phosphorus And Potassium Fertility And Harvest Management, M. A. Islam, M. M. Baidoo

IGC Proceedings (1977-2023)

Balanced nutrition of phosphorus (P) and potassium (K) is needed for improving alfalfa (Medicago sativa L.) productivity. Availability and uptake of P and K by alfalfa for yield response can depend on their relative levels with soil calcium (Ca²⁺) and magnesium (Mg²⁺) in combination with harvest management. An experiment was conducted at the University of Wyoming Sustainable Agriculture Research and Extension Center to determine the alfalfa’s response to P and K in association with Ca, Mg, and harvest time. Treatments were 10 selected combinations (kg ha^-1) of three levels of P (0, 34, …

Conservation Reserve Program Hay Quality From Producer Submissions To A Commercial Laboratory In Central Nebraska, R. J. Kern-Lunbery

IGC Proceedings (1977-2023)

The Conservation Reserve Program (CRP) sets aside hectares to be permanent grassland and keeps those acres out of rotation for agricultural use. In drought conditions, these acres open to emergency haying and grazing. CRP hay is harvested at the end of the primary nesting season, mid to late summer, therefore this is a very mature product for stored forage. Many beef cow producers in the Midwest feed CRP hay in the last third of gestation until cattle can be turned out for spring grazing. Data was obtained from CRP hay samples to evaluate forage nutritive value and supplementation needs relative …

Efficiency, Yield, And Nutritive Value Of Perennial Warm-Season Grass Under Liquid Fertilizer Applications, Rocky Lemus, J. A. White

IGC Proceedings (1977-2023)

The efficacy of liquid fertilizer formulation in forage production is unclear. This preliminary study compared the impact of liquid fertilizers sources compared to traditional granular fertilizers in forage bahiagrass (Paspalum notatum) production. The experimental design was a randomized complete block replicated three times. Ten N fertilizer treatments were applied to forage systems: a well-established ‘Tifton 9’ bahiagrass. The N fertilizer treatments included a control (C, no nitrogen), two granular fertilizers [urea (U, 46-0-0) and urea ammonium sulfate (UAS, 33-0-0)], and four liquid N fertilizers [ urea ammonium nitrate solution (UAN, 32%), Royal Grow (RG, 30-0-0), Pasture Booster Prime (PBP, 30-0-0), …

Feeding Concentrate Formulated With Native Irish Feed Ingredients And A Low Crude Protein Content To Grazing Dairy Cows Has No Effect On Milk Production Or Milk Composition, Z. C. Mckay, K. M. Pierce, A. G. Fahey, M. Wallace, N. Walsh, N. J. Ryan, P. Rice, A. Ryan, F. J. Mulligan

IGC Proceedings (1977-2023)

Improving nitrogen use efficiency (NUE) and feeding native feed ingredients offers potential to improve the environmental sustainability of dairy production. However, improving NUE is a key challenge in grass-based systems due to high crude protein (CP) levels in grass and low nitrogen retention by dairy cows. In addition, concentrate feed typically contains imported feed ingredients which contribute to increased carbon footprint. Therefore, the objective of this study was to investigate the effect of concentrate CP level and ingredient source on milk production and composition. Forty-two mixed-parity Holstein-Friesian cows were blocked on parity and balanced on days in milk (DIM), milk …

Farmer Experiences With Alfalfa In The Southern U.S.A., M. K. Mullenix, L. S. Silva, C. G. Prevatt, J. J. Tucker

IGC Proceedings (1977-2023)

Alfalfa (Medicago sativa L.) is a forage crop of primary importance in the United States (USA); however, adoption and use in the southern USA region has been limited. The combination of adapted alfalfa cultivars and management strategies which demonstrate extended forage growing season length, improved forage nutritive value, and reduced N fertilizer inputs have renewed interest in forage-livestock farmers to consider planting alfalfa. A series of Extension-based educational strategies have been used in the southern USA to 1) create awareness on the use of alfalfa, 2) educate farmers regarding establishment and management practices, and 3) showcase opportunities and challenges …

Tillering Of ‘Marandu’ Brachiaria Under Different Nitrogen Rates In The Brazilian Savannah, A. B. O. Assis, A. L. Bocchi, T. C. Pedrosa, A. O. Matos, A. P. B. Soares

IGC Proceedings (1977-2023)

The tiller is the basic unit of grass growth and tiller density determines the horizontal ground cover, leaves production and pastures perennially. The objective in this study was to quantify the number of aerial and basal tillers and basal:aerial tillers ratio in Urochloa brizantha cv. Marandu, established in Brazilian savannah, submitted to nitrogen doses (0, 50, 100 and 150 kg N/ha). The experiment was carried out in the Forage and Pasture Sector of Jataí Federal University (UFJ) and after soil correction and fertilization, plots were established with Marandu palisade grass in a randomized block design, with four replications and four …

Project Final Report Watershed Plan For Crafts Colly, Sand Lick, And Dry Fork, Kentucky Water Resources Research Institute

KWRRI Research Reports

The North Fork: Whitesburg Tributaries Watershed Plan, developed under this project, provides a path to improve waterbodies impacted by poor wastewater treatment, coal mining, and encroachments on floodplain by housing and roadways. Crafts Colly, Sand Lick, and Dry Fork are tributaries to the North Fork of the Kentucky River. They are located just north of the City of Whitesburg, in Letcher County, which is in the coalfields of southeastern Kentucky. The three watersheds encompass 18 square miles of primarily forested lands and about 30 miles of streams, most of which are entrenched. Because of the steep mountain terrain, most of …

A 2‑Year Longitudinal Randomized Control Trial Of Speed Of Processing Cognitive Training In Aging Adults With Hiv‑Associated Neurocognitive Disorder: Results Of The Think Fast Study, David E. Vance, Pariya L. Fazeli, Andres Azuero, Jennifer S. Frank, Virginia G. Wadley, James L. Raper, Caitlin N. Pope, Karlene K. Ball

Epidemiology and Environmental Health Faculty Publications

Nearly 40% of people with HIV (PWH) experience HIV-associated Neurocognitive Disorder (HAND). In this 3-group efficacy study, 216 PWH 40 + years with HAND or borderline HAND were randomized to either: (1) 10 h of SOP training (n = 70); (2) 20 h of SOP training (n = 73), or (3) 10 h of Internet navigation training (n = 73; contact control group). Participants were administered a measure of SOP [i.e., the Useful Field of View Test (UFOV®)] at baseline, at posttest immediately after training, and at year 1 and year 2 follow up. Intent-to-treat linear mixed-effect models with subject-specific …

Effects Of Psycho-Attitudinal Characteristics On Drivers’ Behavior: A Driving Simulator Study, Francesco Galante, Filomena Mauriello, Simone Fucito, Mariano Pernetti, Alfonso Montella

Kentucky Transportation Center Presentations

Human factors are crucial in causing traffic crashes and researchers try to identify and understand these factors to explore patterns of risky driving behavior and its consequences. It is clear that human factors play a crucial role in the causation of traffic accidents, and researchers are trying to identify and understand these factors. That is why it is important to explore the patterns that identify drivers prone to risky driving behavior and the possible negative consequences of that behavior At this aim, an experiment was conducted using the VERA dynamic driving simulator at the Road Safety Laboratory of the University …

Addressing Pedagogical Challenges In Teaching Social Justice Issues: Are We Scared Yet?, Laneshia R. Conner, Rujeko Machinga

Social Work Faculty Publications

While films are popular as teaching tools in social work education, to critique social inequalities, horror films have not been the conventional genre. This teaching note describes the creation and deployment of a course that uses horror films to address social justice issues as part of different critical reflection, which is linked to practice wisdom. The author describes the structure of course, readings, activities, and reflections for expanding the use of this genre and well as limitations. The
use of horror films can be a useful and salient tool to engage students to draw upon social constructions of what it …

Horse Owner Preferences For Equine Veterinary Services, Olivia Gibson

Theses and Dissertations--Agricultural Economics

The decline in the number of equine veterinarians creates significant challenges for the future of equine veterinary medicine. One crucial aspect of this issue is how the financial health of equine veterinary practices might be improved. Examining how horse owners respond to changes in the prices of veterinary services allows practices to determine whether adjusting prices can improve practices’ financial standing. Using an online stated preference survey completed by 4,992 horse owners in the U.S., this study investigates horse owner preferences for equine veterinary services. First, horse owners’ utilization of equine veterinary services and willingness to adapt to the changes …

Open Alex, Kyle Demes

Research Analytics Summit 2024

Research organizations of all shapes and sizes need information on the research activities at their institutions and other institutions around the world to effectively plan, implement, and evaluate their research strategies. Historically, that information was only accessible through closed commercial licenses. This session will introduce OpenAlex, the most comprehensive and only completely open index of the world’s research ecosystem. The presentation will first provide an overview of OpenAlex, highlighting the importance of openness and transparency in research analytics, and will walk-through how to perform common research analyses in OpenAlex.

Geographic And Temporal Trends In Pediatric And Young Adult Brain Tumors In Kentucky, 1995–2019, W. Jay Christian, C. J. Walker, Jaclyn K. Mcdowell, B. Huang, T. C. Tucker, John L. Villano, Eric B. Durbin

UK CARES Faculty Publications

Introduction: Pediatric and young adult brain tumors (PYBT) account for a large share of cancer-related morbidity and mortality among children in the United States, but their etiology is not well understood. Previous research suggests the Appalachian region of Kentucky has high rates of PYBT. This study explored PYBT incidence over 25 years in Kentucky to identify geographic and temporal trends and generate hypotheses for future research. Methods: The Kentucky Cancer Registry contributed data on all PYBT diagnosed among those aged 0–29 during years 1995–2019. Age- and sex-adjusted spatio-temporal scan statistics—one for each type of PYBT, and one for all types—comprised …

Cbt And Me: A Beginning Therapist's Journey Utilizing Client Feedback, Haley Scruggs

Theses and Dissertations--Family Sciences

Cognitive behavioral couple therapy (CBCT) is a model of therapy targeting cognitions, emotional responses, and behavioral interactions between couples experiencing relationship distress. Routine outcome monitoring (ROM) is a tool that clinicians can use to track the progress of their clients in therapy from the perspective of the client. This study aimed to use MFT-PRN, a type of ROM, to gather client progress throughout CBCT treatment. Prototypical change trajectories were created in Microsoft Excel for examination of presenting problem progress, couple satisfaction, and overall relationship functioning. It was found that small data sensitivity affected the trajectories immensely, though ROM outcomes revealed …

Thermophilic Aerobic Digestion Using Aquaculture Sludge From Rainbow Trout Aquaculture Facilities: Effect Of Salinity, Jihyun Chun, Su Min Kim, Gwangil Ko, Hyo Jeong Shin, Minjae Kim, Hyun Uk Cho

UK CARES Faculty Publications

The objectives of this study were to evaluate the potential of using thermophilic aerobic digestion (TAD) to hydrolyze aquaculture sludge, and to investigate the hydrolysis efficiency and changes in microbial community structure during TAD at 0, 15, and 30 practical salinity units (psu). As digestion progressed, soluble organic matter concentrations in all reactors increased to their maximum values at 6 h. The hydrolysis efficiency at 6 h decreased as salinity increased: 2.42% at 0 psu, 1.78% at 15 psu, and 1.04% at 30 psu. The microbial community compositions at the genus level prominently differed in the relative abundances of dominant …

Solid Angle Measure Approximation Methods For Polyhedral Cones, Allison Fitisone

Theses and Dissertations--Mathematics

Polyhedral cones are of interest in many fields, like geometry and optimization. A simple, yet fundamental question we may ask about a cone is how large it is. As cones are unbounded, we consider their solid angle measure: the proportion of space that they occupy. Beyond dimension three, definitive formulas for this measure are unknown. Consequently, devising methods to estimate this quantity is imperative. In this dissertation, we endeavor to enhance our understanding of solid angle measures and provide valuable insights into the efficacy of various approximation techniques.

Ribando and Aomoto independently discovered a Taylor series formula for solid angle …

A Geometric Model For Syzygies Over 2-Calabi–Yau Tilted Algebras Ii, Ralf Schiffler, Khrystyna Serhiyenko

Mathematics Faculty Publications

In this article, we continue the study of a certain family of 2-Calabi–Yau tilted algebras, called dimer tree algebras. The terminology comes from the fact that these algebras can also be realized as quotients of dimer algebras on a disk. They are defined by a quiver with potential whose dual graph is a tree, and they are generally of wild representation type. Given such an algebra B, we construct a polygon S with a checkerboard pattern in its interior, which defines a category Diag(S). The indecomposable objects of Diag(S) are the 2-diagonals in S, and its morphisms are certain pivoting …

The Role Of Local Knowledge In Climate Change Research, Ryan E. Mccoy

Theses and Dissertations--Philosophy

This dissertation addresses the growing need within climate research for improvements in regional and local climate information. I argue that knowledge gaps in regional climate information constitute a form of climate injustice in which harm largely falls on regions most vulnerable to climate change. Moreover, I show that our current methods for garnering regional climate information fail to provide information on place-specific factors, such as local culture, socio-economic systems, and ecology, which mediate climate change impacts. In order to address these knowledge gaps, as well as provide information necessary for effective mitigation and adaptation, I argue for the inclusion of …

Neonatal Abstinence Signs During Treatment: Trajectory, Resurgence And Heterogeneity, Jennifer S. Miller, Henrietta S. Bada, Philip M. Westgate, Thitinart Sithisarn, Markos Leggas

Pediatrics Faculty Publications

Neonatal abstinence syndrome (NAS) presents with a varying severity of withdrawal signs and length of treatment (LOT). We examined the course and relevance of each of the NAS withdrawal signs during treatment in a sample of 182 infants with any prenatal opioid exposure, gestational age ≥ 35 weeks, without other medical conditions, and meeting the criteria for pharmacological treatment. Infants were monitored using the Finnegan Neonatal Abstinence Scoring Tool. Daily mean Finnegan scores were estimated using linear mixed models with random subject effects to account for repeated withdrawal scores from the same subject. Daily item prevalence was estimated using generalized …

Relationships Between Cognitive And Physical Performance And Readiness In Military Populations, Lina Ochoa

Theses and Dissertations--Rehabilitation Sciences

Military missions and operations expose warfighters to stressful and demanding situations and dynamic environments. These situations and environments require that warfighters have optimal performance in several dimensions of human performance, such as cognitive and physical performance. Military readiness is the potential these military units or personnel have to successfully deploy and sustain assigned operational missions worldwide. Military readiness is essential for increased physical and cognitive performance, ensuring augmented individual and unit effectiveness, lethality, and national security. The primary challenge is understanding and finding ways to measure and assess the cognitive, behavioral, and physical performance effects of complex and challenging environments …

Sustainable Additive Manufacturing Of Polysulfone Membranes For Liquid Separations, Brian Leonard, Harrison Loh, David Lu, Ebuka A. Ogbuoji, Isabel Escobar, Konstantinos Sierros, Oishi Sanyal

UK CARES Faculty Publications

Membranes serve as important components for modern manufacturing and purification processes but are conventionally associated with excessive solvent usage. Here, for the first time, a procedure for fabricating large area polysulfone membranes is demonstrated via the combination of direct ink writing (DIW) with non-solvent induced phase inversion (NIPS). The superior control and precision of this process allows for complete utilization of the polymer dope solution during membrane fabrication, thus enabling a significant reduction in material usage. Compared to doctor blade fabrication, a 63% reduction in dope solution volume was achieved using the DIW technique for fabricating similarly sized membranes. Cross …

A Case Study In Program Evaluation, Alyssa Osborne

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

As a result of a Methicillin-Resistant Staphylococcus Aureus (MRSA) outbreak at a local high school, the Lexington Fayette County Health Department (LFCHD) has been tasked with developing a program to ensure timely reporting of actions taken in the event of a MRSA outbreak or disease outbreak of similar nature (1). This program evaluation is guided by the CDC’s 6-step program evaluation framework (2), which was used to inform this assessment.

Evaluation Of Public Radon Messaging In Kentucky As Compared To Three Other States, Abigail Knapp

Theses and Dissertations--Public Health (M.P.H. & Dr.P.H.)

Radon poses a large health risk to those exposed to it, as it is an invisible, odorless, carcinogenic gas. Kentucky has high ambient levels of radon, but public awareness remains low as tobacco has been publicized as the main cause of lung cancer. As Kentucky has the highest incidence of lung and bronchial cancers in the United States, we aimed to examine the state’s health department radon page to see if it has sufficient information to warn residents about radon and provide resources. We reviewed the current Kentucky public messaging, radon rates, testing rates, and legislation compared to Ohio, Washington, …

Analysis Of Potential Safety Benefits Resulting From Different Automation Levels And Penetration Rates Of Automated Vehicles: A Case Study In The Netherlands, Dimitra Michalaka, Amna Chaudhry, Eleonora Papadimitriou, Joshua Wetmore

Kentucky Transportation Center Presentations

No abstract provided.

Impact Of Retroreflective Backplates And Flashing Yellow Arrows On Distraction-Related Crashes In Kentucky, Arunabha Banerjee, Tyaha Woodard, Bharat Kumar Pathivada, Dylan Justice, Kirolos Haleem

Kentucky Transportation Center Presentations

No abstract provided.

Exploiting Explainable Machine Learning Models To Reveal Critical Factors In Fatal Crashes Across Pre-Covid, Covid, And Post-Covid Periods, Saumik Sakib Bin Masud, Seyedeh Mahgam Tabatabaei, Alexandra Kondyli

Kentucky Transportation Center Presentations

No abstract provided.

Driver Perception Of Fluorescent Yellow Green Signage, Busisiwe Marole, Keolebogile Bosilong, Tshegofatso Mongae, Namatirai Cheure, Karien Venter

Kentucky Transportation Center Presentations

No abstract provided.

Navigating The Road To Safety: The Role Of Automated Enforcement In Metro Phoenix Region, Sushmita Bhandari, Alyssa Ryan, Henrick Haule, Yao-Jan Wu

Kentucky Transportation Center Presentations

No abstract provided.

Examining Memory And Simulated Driving Acutely Post-Mild Traumatic Brain Injury, Adeline Godsy, Benjamin Mcmanus, Andrea Underhill, Christopher R. M. Rundus, Fangda Zhang, Thomas Kerwin, Cameron Wrabel, Ginger Yang, Despina Stavrinos

Kentucky Transportation Center Presentations

No abstract provided.

Assessing The Safety Effectiveness Of Roundabouts In The State Of Kentucky, Tathagatha Khan, Bharat Kumar Pathivada, Kirolos Haleem, Arunabha Banerjee

Kentucky Transportation Center Presentations

No abstract provided.