Digital Commons Network^™

Research: My Undergraduate Journey, Robin Petroze

Kaleidoscope

No abstract provided.

Reflections On Mentoring Undergraduate Research, Robin L. Cooper

Kaleidoscope

No abstract provided.

The Role Of Oxidative Stress In Alzheimer's Disease, Robin Petroze

Kaleidoscope

Over four million individuals in the United States currently suffer from Alzheimer's disease (AD), a devastating disorder of progressive dementia. Within the next several decades, AD is expected to affect over 22 million people globally. AD can only be definitively diagnosed by postmortem examination. Thus, investigation into the specific pathogenesis of neuronal degeneration and death in AD on a biochemical level is essential for both earlier diagnosis and potential treatment and prevention options. Overproduction of amyloid [3-peptide (A[3) in the brain leads to both free radical oxidative stress and toxicity to neurons in AD. My undergraduate biochemical studies with regard …

Anorexia, Bulimia, And Crayfish (Or, Why I Study The Pharmacology Of Serotonin Receptors In Glutamatergic Invertebrate Systems), Garrett Sparks

Kaleidoscope

No abstract provided.

Undergraduate Awards And Honors, Uk Office Of Undergraduate Research

Kaleidoscope

No abstract provided.

Our Adolescents--Our Future, Hatim A. Omar

Pediatrics Faculty Publications

No abstract provided.

Geologic Maps And Geologic Issues In Kentucky: A Citizen's Guide, Carol Ruthven, John D. Kiefer, Stephen F. Greb, William M. Andrews Jr.

Special Publication--KGS

Citizens in all walks of life benefit from the information on geologic maps. Geologic maps are used to:

• Identify areas prone to natural hazards, such as landslides, erosion, sinkholes, and flooding
• Select locations that are suitable for tunnels, bridges, dams, and quarries
• Identify suitable sites for safe construction of homes and commercial buildings
• Select safe places for building septic systems and landfills to minimize the risk of polluting soils and groundwater
• Help farmers, landowners, and government officials locate groundwater resources and protect water quality
• Help citizens understand geologic features (such as faults, mineral deposits, and impact structures) in the landscape …

Temperature Variations From Hubble Space Telescope Spectroscopy Of The Orion Nebula, R. H. Rubin, P. G. Martin, R. J. Dufour, Gary J. Ferland, K. P. M. Blagrave, X.-W. Liu, J. F. Nguyen, J. A. Baldwin

Physics and Astronomy Faculty Publications

We present Hubble Space Telescope (HST)/STIS long-slit spectroscopy of NGC 1976. Our goal is to measure the intrinsic line ratio [O III] 4364/5008 and thereby evaluate the electron temperature (T_e) and the fractional mean-square T_e variation (t²_A)across the nebula. We also measure the intrinsic line ratio [N II] 5756/6585 in order to estimate T_e and t²_A in the N⁺region. The interpretation of the [N II] data is not as clear cut as the [O III] data because of a higher sensitivity to knowledge …

Investigation Of Soluble Salts On Kentucky Bridges, Sudhir Palle, Rick Younce, Theodore Hopwood Ii

Kentucky Transportation Center Research Report

Invisible soluble salts present on steel highway structures can act to promote corrosion even after maintenance painting. Soluble salts include chloride, nitrate and sulfate ions. Soluble salts found on bridge decks and roadways are the result of usage of deicing salts (chlorides), and the deposition of atmospheric pollution (nitrates and sulfates) on exterior surfaces. Typical pollution-related sources of soluble salts are coal-fired power plants, refineries, farming operations, vehicle emissions, and chemical plants. Sites for soluble salt damage on bridges include:

• Beam ends under open or leaking expansion joints,
• Flanges and lower portions of webs of overpass structures,
• Lower chords and …

Sex Education In The Schools: What Role Does It Play?, Darby H. Mcelderry, Hatim A. Omar

Pediatrics Faculty Publications

Information regarding pubertal development, sex, pregnancy, and contraception should be provided to children and adolescents in an age-appropriate manner from parents, health care providers, and schools. This article reviews the medical literature on school sex education programs, adolescents' perception of these programs, and the role played by the media, parents, and health care professionals in sexual education of teens.

Parenting Adolescents, Sandra L. D'Angelo, Hatim A. Omar

Pediatrics Faculty Publications

The period of adolescence is often thought to be one of intense stress and turmoil. Yet many parents and teens negotiate this developmental stage without extreme family conflict and without sacrificing close relationships. This review summarizes a portion of the literature on parent-adolescent relationships, focusing on monitoring and control of adolescent behavior and parenting style. Basic principles to emphasize when working with adolescents and parents are also included.

Processor Microarchitecture For Implementation Of Ephemeral State Processing Within Network Routers, Muthulakshmi Muthukumarasamy

Theses and Dissertations--Electrical and Computer Engineering

The evolving concept of Ephemeral State Processing (ESP) is overviewed. ESP allows development of new scalable end-to-end network user services. An evolving macro-level language is being developed to support ESP at the network node level. Three approaches for implementing ESP services at network routers can be considered. One approach is to use the existing processing capability within commercially available network routers. Another approach is to add a small scale existing ASIC based general-purpose processor to an existing network router. This thesis research concentrates on a third approach of developing a special-purpose programmable Ephemeral State Processor (ESPR) Instruction Set Architecture (ISA) …

A Spatial Model For Evaluating Variable-Rate Fertilizer Application Accuracy, John Patrick Fulton

University of Kentucky Doctoral Dissertations

The popularity of variable-rate technology (VRT) has grown. However, the limitations and errors ofthis technology are generally unknown. Therefore, a spatial data model was developed to generate "asapplied"surfaces to advance precision agricultural (PA) practices. A test methodology based on ASAEStandard S341.2 was developed to perform uniform-rate (UR) and variable-rate (VR) tests to characterizedistribution patterns testing four VRT granular applicators (two spinner spreaders and two pneumaticapplicators). Single-pass UR patterns exhibited consistent shapes for three of the applicators with patternsshifts observed for the fourth applicator. Simulated overlap analysis showed that three of the applicatorsperformed satisfactorily with most CVs less than 20% while …

Traits Underlying Invasiveness: A Comparison Of Widespread And Endemic Species In The Genus Gambusia (Poeciliidae), Jennifer Schopf Rehage

University of Kentucky Doctoral Dissertations

Due to the irreversible nature of biological invasions, prediction has been a key area of emphasis in invasion biology. Specifically, the degree to which species-specific traits may help us predict invasion success is a core issue in the field. My research examined a series of traits and asked whether they were good predictors of invasion success, particularly establishment success. I compared traits among four species of the poeciliid fish Gambusia, two of them highly invasive (G. affinis and G. holbrooki) and two of them non-invasive (G. hispaniolae and G. geiseri).I examined abiotic tolerances, feeding behavior, behavioral responses to novel predation …

Innovation In A University Social System: The Adoption Of Electronic Theses And Dissertations Digital Libraries, Suzanne Lorraine Allard

University of Kentucky Doctoral Dissertations

The "digital library" (DL) is a communication technology that has the potential to improve communication by removing temporal and geographic barriers and by introducing interactivity. This research focused on the adoption of digital libraries for electronic theses and dissertations (ETD-DL) at universities worldwide. ETD-DLs provide a means for universities to learn about implementing digital libraries in a networked environment.This research used diffusion of innovation theory to explore what has influenced ETD-DL adoption among Networked Digital Library of Theses and Dissertations (NDLTD) member universities. Communication channels were categorized as being either interpersonal or mediated. The perceived importance of these channels was …

Rules Based Modeling Of Discrete Event Systems With Faults And Their Diagnosis, Zhongdong Huang

University of Kentucky Doctoral Dissertations

Failure diagnosis in large and complex systems is a critical task. In the realm of discrete event systems, Sampath et al. proposed a language based failure diagnosis approach. They introduced the diagnosability for discrete event systems and gave a method for testing the diagnosability by first constructing a diagnoser for the system. The complexity of this method of testing diagnosability is exponential in the number of states of the system and doubly exponential in the number of failure types. In this thesis, we give an algorithm for testing diagnosability that does not construct a diagnoser for the system, and its …

Controls On Middle To Late Ordovician Synorogenic Deposition In The Southeastern Corner Of Laurentia, German Bayona

University of Kentucky Doctoral Dissertations

Middle and Upper Ordovician strata in the southernmost Appalachians document initial collision along the southeastern margin of Laurentia during the Blountian orogeny, an early phase of the Taconic orogeny. Coeval drowning and exposure of different parts of the former platform and variations in stratal architecture have been attributed to tectonic and depositional loading along the collisional margin. Stratigraphic correlations, using a bentonite-graptoliteconodont time framework, a palinspastic map, and a map of subsurface basement structures, suggest that basement-fault reactivation, flexural subsidence, and eustasy variously controlled uplift, subsidence, and deposition at different sites within the peripheral foreland basin. This dissertation documents how …

The Effect Of Visual Art On Music Listening, Jennifer Sue Shank

University of Kentucky Doctoral Dissertations

The purpose of this study was to examine the effect of visual stimuli on music listening skills in pre-service elementary teachers. Visual Stimuli in this study refers to the presentation of arts elements in selected visually projected images of paintings. Music listening skills are defined as those skills needed to identify and interpret musical excerpts. A Pretest-Posttest Control-group Design was used in this study. Subjects were pre-service elementary general educators enrolled in a large southern university (N=93). Students from intact classes were randomly placed into either the experimental group or the control group. The treatment consisted of six music listening …

Cellular Trafficking Properties And Physiological Functions Of The Á1-Adrenoceptor Subtypes, Dan Chalothorn

University of Kentucky Doctoral Dissertations

The 1-adrenoceptors (1-ARs) serve as an interface between the sympathetic nervous system and the cardiovascular system where they are mediators of systemic arterial blood pressure, initiators of positive inotropy, and regulators of cellular growth responses. There are three subtypes: 1A-, 1B-, and 1D-ARs. This dissertation research investigated the trafficking properties of the 1-ARs at the cellular level as well as physiological relevance of the 1-ARs at the tissue level. In vitro studies using transiently transfected 1-AR/GFP subtypes revealed distinct basal localization patterns and different agonist-mediated activation and desensitization properties. The 1A- and the 1B-AR/GFP subtypes displayed agonist-mediated receptor redistribution, in …

Comparative Gene Mapping For Equus Przewalskii And E. Hemionus Onager With Investigation Of A Homologous Chromosome Polymorphism In Equidae, Jennifer Leigh Myka

University of Kentucky Doctoral Dissertations

The ten extant species in the genus Equus are separated by less than 3.7 million years of evolution. Three lines of investigation were pursued to further characterize equid genome organization. 1.) The Przewalski.s wild horse (E. przewalskii, EPR) has a diploid chromosome number of 2n=66, while the domestic horse (E. caballus, ECA) has 2n=64. A comparative gene map for E. przewalskii was constructed using 46 bacterial artificial chromosome (BAC) probes previously mapped to 38 of 44 E. caballus chromosome arms and ECAX. BAC clones were hybridized to metaphase spreads of E. przewalskii and localized by fluorescent in situ hybridization (FISH). …

Development Of An Unmanned Aerial Vehicle For Low-Cost Remote Sensing And Aerial Photography, Andrew David Simpson

University of Kentucky Master's Theses

The paper describes major features of an unmanned aerial vehicle, designed undersafety and performance requirements for missions of aerial photography and remotesensing in precision agriculture. Unmanned aerial vehicles have vast potential asobservation and data gathering platforms for a wide variety of applications. The goalof the project was to develop a small, low cost, electrically powered, unmanned aerialvehicle designed in conjunction with a payload of imaging equipment to obtainremote sensing images of agricultural fields. The results indicate that this conceptwas feasible in obtaining high quality aerial images.

Development Agents And Nomadic Agency In The Damergou, Niger: Four Perspectives In The Development "Market", Karen Marie Greenough

University of Kentucky Master's Theses

Discourse between development agents and nomads implies that development for nomadiccommunities is a contradiction in terms. A "market-oriented" subtext underscores the investors'power of international agencies, the brokers' competition of intermediate organizations, and thenomadic clients' opportunism. Interviews and participant-observation focused on relationsbetween Wo??aa??e communities, bilateral and local organizations, and government extensionservices. I compare the data obtained with historical events to illuminate current phenomena.Approaches of structuration, political ecology, and disequilibrium theory aid an examination ofcommunication and discourses, and gaps in understanding between the parties. I find thatessential pastoral livelihood strategies of mobility and customary institutions are threatened bythe development system. How will …

A Survey Of Limited Nondeterminism In Computational Complexity Theory, Matthew Asher Levy

University of Kentucky Master's Theses

Nondeterminism is typically used as an inherent part of the computational models used incomputational complexity. However, much work has been done looking at nondeterminism asa separate resource added to deterministic machines. This survey examines several differentapproaches to limiting the amount of nondeterminism, including Kintala and Fischer's βhierarchy, and Cai and Chen's guess-and-check model.

Evaluation Of Fire-Fighting Helmet Surface Technology For High Radiant Heat Applications, David L. Barnett

University of Kentucky Master's Theses

Protective helmets used by fire-fighters must be designed to minimize the amount of heat transferred to the users head while providing durability, comfort, and affordable costs. This thesis highlights the evaluation of new helmet technology specifically tailored to high radiant heat environments to advance the state-of-the-art in head protection for this application. The research focused on the assessment of the outer shells of helmets and the properties of the surfaces. The development included the evaluation of radiation heat transfer, in a laboratory environment, to various helmet shell surface constructions. Industry standards were considered, and critiqued. Experiments were designed to isolate …

Design Of A Lorentz, Slotless Self-Bearing Motor For Space Applications, Barrett Alan Steele

University of Kentucky Master's Theses

The harsh conditions of space, the stringent requirements for orbiting devices, and the increasing precision pointing requirements of many space applications demand an actuator that can provide necessary force while using less space and power than its predecessors. Ideally, this actuator would be able to isolate vibrations and never fail due to mechanical wear, while pointing with unprecedented accuracy. This actuator has many space applications from satellite optical communications and satellite appendage positioning to orbiting telescopes. This thesis presents the method of design of such an actuator a self-bearing motor. The actuator uses Lorentz forces to generate both torque and …

Understanding Ethnicity: The Relation Among Ethnic Identity, Collectivism, And Individualism In African Americans And European Americans, Ignacio David Acevedo

University of Kentucky Master's Theses

This study examined the relation among ethnic group membership, ethnic identity, collectivism and individualism in a sample of European American and African American college students. Findings suggest that African Americans are more collectivist than European Americans only in reference to their ethnic group. There were no significant differences between ethnic groups in collectivism toward friends, family, strangers or colleagues. Contrary to findings of previous research, there was no significant moderating effect of gender on collectivism differences between ethnic groups. In congruence with previous research, ethnic identity mediated the relation between ethnic group membership and collectivism toward the ethnic group. African …

Are These Queer Times? Gay Male Representation On The American Stage In The 1920'S And 1990'S, James Russell Couch

University of Kentucky Master's Theses

Utilizing a model based on Queer theory and comprising four relational paradigms, this thesis examines specific dramas of Mae West and Terrence McNally in an effort to understand the multiple relationships between the text, the society and the culture in the production of a gay male identity and its representation on the American stage in the 1920s and the 1990s. Each relational paradigm is the product of a different twentieth century scholar and can be viewed as an individual lens through which one aspect of a drama or culture can be magnified, illuminated or distorted. These paradigms are: culture and …

The Elusive Right To Reinstatement Under The Family Medical Leave Act, Stacy A. Hickox

Kentucky Law Journal

No abstract provided.

At The Intersection Of Proximate Cause And Terrorism: A Contextual Analysis Of The (Proposed) Restatement Third Of Torts' Approach To Intervening And Superseding Causes, Jim Gash

Kentucky Law Journal

No abstract provided.

Child Custody For Disabled Adults: What Kentucky Families Need, Amy P. Hauser

Kentucky Law Journal

No abstract provided.