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Towards A Model Of Best Practice: An Irish Perspective On Employee Empowerment, Richard O'Connor

Theses

This dissertation examines the topic of Employee Empowerment within an Irish context. The aim is to provide a model of best practice for its implementation Empowerment is defined as a process whereby: a culture of empowerment is developed, information is shared, competency is developed, and resources and support are provided. Each of the components of empowerment—culture, information sharing, resource provision, and support—is examined in detail. The benefits of employee empowerment are noted and the theoretical foundations of both Employee Empowerment and Internal Marketing are examined in an extensive literature review. A model of best practice is proposed and conclusions, recommendations …

Investigation Of Phospholipid Tubule Morphology For Use In Drug Delivery, Colleen Colson Garrett

LSU Doctoral Dissertations

Spherical vesicles consisting of phosphatidylcholines in which diacetylene groups have been inserted in the hydrocarbon tail centers give rise to hollow cylindrical tubes, known as “tubules”. The study of tubules has become an area of intense interest in recent years due to their unusual morphology, which raises several profound theoretical issues and suggests their use in a variety of applications. Tubule hollowness suggests medical and industrial encapsulations as well as filtration and purification applications. These potential uses, e.g., for drug and gene delivery, requires optimization of their morphology for the application. Tubules have many technologically desirable properties, such as a …

Wet And Dry Aging Of Polymer-Asphalt Blends: Chemistry And Performance, Ionela Chiparus Glover

LSU Doctoral Dissertations

A PG 76-22 Polymer Modified Asphalt Cement composition was subjected in the laboratory to accelerated aging using both a standard Thin Film Oven Test and a Pressure Aging Vessel. Conditions simulating wet atmospheres (PAV in saturated water vapors) as well as very long service terms (multiple dry and wet PAV operations) were studied. A Rotating Cylinder Aging Test has been employed as an alternate asphalt aging technique using the same PMAC composition in order to observe the initial phases of the oxidative aging process. The data provided by this technique was correlated with the actual aging in the field of …

John Mackey: The Composer, His Compositional Style And A Conductor's Analysis Of Redline Tango And Turbine, Rebecca L. Phillips

LSU Doctoral Dissertations

The purpose of this monograph is to present the first formal analysis of John Mackey and his music. Through substantive firsthand interaction with the composer, this document details Mackey’s unique compositional development through computer-based learning and includes a conductor’s analysis of Redline Tango and Turbine. Mackey’s compositional style includes simplistic forms using melodies and harmonies that do not readily demonstrate the difficulties conductors and performers may find within his well-crafted compositions. Mackey’s work emphasizes the element of rhythm and his orchestration typically utilizes the conventional instrumentation for wind ensemble with prominence placed on percussion. Redline Tango has been awarded two …

Financing Port Dredging Costs: Taxes Versus User Fees, Wayne K. Talley

Economics Faculty Publications

The article examines the use of user fee and tax programs to finance the cost of port dredging. The article discusses the U.S. Water Resources Development Act, the Harbor Maintenance Trust Fund, the Harbor Maintenance Tax, which is an ad valorem tax on the cargo's value, the Omnibus Budget Reconciliation Act, articles from the General Agreement on Tariffs and Trade, national user fee program proposals by the former U.S. President Bill Clinton administration, Moriarity's Rule, and the Shapley Value Rule.

Effects Of Cryopreservation And Constituents Of Semen Extenders On Mitochondrial Function Of Bull Spermatozoa, Abdulhakeem Hashim Eljarah

LSU Doctoral Dissertations

This study investigated the effects of semen extender constituents and cryopreservation on bovine spermatozoal mitochondrial function. Three yearling Holstein bulls were used. Two ejaculates per bull were collected and pooled on a weekly basis for five weeks and extended in four treatments: 1) sodium citrate egg yolk extender with antibiotics (lincomycin, spectinomycin, gentamicin and tylosin); 2) ¡°1¡± with glycerol; 3) ¡°2¡± without antibiotics; and 4) ¡°1¡± without antibiotics. Each was divided into portions for analyses before freezing and after cryopreservation. The pre-freeze and thawed semen were transferred to a 37¡ãC water bath, the same assays were performed. In experiment 1, …

The Urban Development Of Spanish Colonial Pensacola, 1781-1821, Harry James Wilson

LSU Doctoral Dissertations

Pensacola evolved through the second Spanish period (1781-1821) from a fledgling military outpost to an increasingly complex urban center. Local and regional demographic trends and environmental conditions prompted Pensacola to grow in a manner that differed from other Spanish colonial urban centers and created in Pensacola an unusual class structure and residential patterning. The primary goal of this dissertation is to show that Pensacola’s residential and landowning patterns never experienced the degree of socioeconomic residential clustering noted in other Spanish colonial urban centers. Social residential clustering was unusual in Spanish Pensacola, and socioeconomic classes and land values varied from lot …

Hope For Today And Tomorrow: Identity Construction Power, And Persistence Of Community College Women Who Are First In Their Families To Attend College, Crystal Deer Lee

LSU Doctoral Dissertations

This dissertation was a case study of four community college women who were first in their families to attend college. Through this study, the “first-generation” construct was analyzed in regard to its uses and limits. The researcher found the label as an identifier becomes problematic through social discourse. These results confirm London’s (1996) finding that students themselves do not necessarily find anything unique about their situations or anything in common with other students simply based on their being the first in their families to attend college. Therefore, the “first-generation” construct may be viewed primarily as a higher education versus an …

An Investigation Of The Frictional And Thermal Behavior Of Oscillatory Sliding Line Contacts, Mongi Mansouri

LSU Doctoral Dissertations

This research deals with an experimental and numerical investigation of the frictional and thermal behavior of pin-bushing pairs, operating at reciprocating sliding motion or under heavy loads. Large interfacial temperatures developed due to frictional heating can cause failure. Therefore, numerical prediction and analysis of the surface temperature under various operating conditions are important. Laboratory tests using a pin-bushing tester provided measurements of the friction coefficient and temperature. Hard coated and plain (uncoated) bushings, both made of induction hardened stainless steel, were tested. Lower coefficient of friction and surface temperature were observed in the case of the coated bushing. In the …

Simulations-Guided Design Of Process Analytical Sensor Using Molecular Factor Computing, Bin Dai

University of Kentucky Doctoral Dissertations

Many areas of science now generate huge volumes of data that present visualization, modeling, and interpretation challenges. Methods for effectively representing the original data in a reduced coordinate space are therefore receiving much attention. The purpose of this research is to test the hypothesis that molecular computing of vectors for transformation matrices enables spectra to be represented in any arbitrary coordinate system. New coordinate systems are selected to reduce the dimensionality of the spectral hyperspace and simplify the mechanical/electrical/computational construction of a spectrometer. A novel integrated sensing and processing system, termed Molecular Factor Computing (MFC) based near infrared (NIR) spectrometer, …

Integrated Approach To The Superplastic Forming Of Magnesium Alloys, Fadi K. Abu-Farha

University of Kentucky Doctoral Dissertations

The economical and environmental issues associated with fossil fuels have been urging the automotive industry to cut the fuel consumption and exhaust emission levels, mainly by reducing the weight of vehicles. However, customers increasing demands for safer, more powerful and luxurious vehicles have been adding more weight to the various categories of vehicles, even the smallest ones. Leading car manufacturers have shown that significant weight reduction, yet satisfying the growing demands of customers, would not be feasible without the extensive use of lightweight materials. Magnesium is the lightest constructional metal on earth, offering a great potential for weight-savings. However, magnesium …

Computer Simulation And Modeling Of Physical And Biological Processes Using Partial Differential Equations, Wensheng Shen

University of Kentucky Doctoral Dissertations

Scientific research in areas of physics, chemistry, and biology traditionally depends purely on experimental and theoretical methods. Recently numerical simulation is emerging as the third way of science discovery beyond the experimental and theoretical approaches. This work describes some general procedures in numerical computation, and presents several applications of numerical modeling in bioheat transfer and biomechanics, jet diffusion flame, and bio-molecular interactions of proteins in blood circulation.

A three-dimensional (3D) multilayer model based on the skin physical structure is developed to investigate the transient thermal response of human skin subject to external heating. The temperature distribution of the skin is …

Virtual' Brides In The Post-Soviet Context, Michael Paul Begin

University of Kentucky Doctoral Dissertations

This project offers a multifaceted, interdisciplinary approach to understanding the contemporary post-Soviet Internet bride phenomenon and the rationales, motives, and aspirations of the industry's participants. As international marriage services have incorporated information and communications technologies (ICTs) to assist in the marketing of women of post-communist nations for correspondence courtship with Western men, the industry has furthered the globalization of marriage markets and the opportunities for communicative exchange among disparate nations and cultures. By way of case study, the project takes a special focus on the Belarusian/American segment of the industry, turning to personal interviews with participants and employing qualitative techniques …

Diversity In A Japanese Transplant: The Effect Of Gender, Race, Age, And Employment Status On Teamwork, Elena Darina Lepadatu

University of Kentucky Doctoral Dissertations

Diversity and Teamwork are currently some of the trendiest human resources strategies of boosting team performance and ultimately, organizational performance. This study analyzes the impact of gender, racial, age and employment status diversity on teamwork, and is one of the first studies on diversity and teamwork in the mature phase of Japanese transplants. The theoretical framework includes elements of the symbolic interactionist theory, Kanter.s theory on tokenism, revised contact hypothesis and perspectives on cultural diversity (Ely and Thomas, 2001). The data were collected from interviews with 87 workers from 16 production teams working on the assembly line at a top …

Automated High-Speed Monitoring Of Metal Transfer For Real-Time Control, Zhenzhou Wang

University of Kentucky Doctoral Dissertations

In the novel Double Electrode Gas Metal Arc Welding (DE-GMAW), the transfer of the liquid metal from the wire to the work-piece determines the weld quality and for applications where the precision is critical, the metal transfer process needs to be monitored and controlled to control the diameter, trajectory, and transfer rate of the droplet of liquid metal. In this doctoral research work, the traditional methods of tracking, Correlation, Least Square Matching (LSM) and Kalman Filtering (KF), are tried first. All of them failed due to the poor quality of the metal transfer image and the variety of the droplet. …

Functionalization Of Fluorinated Surfactant Templated Silica, Gifty Osei-Prempeh

University of Kentucky Doctoral Dissertations

Surfactant templating provides for the synthesis of ordered mesoporous silica and the opportunity to tailor the pore size, pore structure, particle morphology and surface functionality of the silica through the selection of synthesis conditions and surfactant template. This work extends the synthesis of nanostructured silica using fluorinated surfactant templates to the synthesis of organic/inorganic composites. The effect of fluorinated surfactant templates (C6F13C2H4NC5H5Cl, C8F17C2H4NC5H5Cl and C10F21C2H4NC5H5Cl), which have highly hydrophobic fluorocarbon tails, on functional group incorporation, accessibility, and silica textural properties is examined and compared to properties of hydrocarbon surfactant (C16H33N(CH3)3Br, CTAB) templated silica. Hydrocarbon (vinyl, n-decyl and 3-aminopropyl) and fluorocarbon …

Characterization And Flow Physics Of Plasma Synthetic Jet Actuators, Arvind Santhanakrishnan

University of Kentucky Doctoral Dissertations

Plasma synthetic jet actuators are investigated experimentally, in which the geometrical design of single dielectric barrier discharge (SDBD) plasma actuators is modified to produce zero-mass flux jets similar to those created by mechanical devices. The SDBD plasma actuator consists of two rectangular electrodes oriented asymmetrically and separated by a layer of dielectric material. Under an input of high voltage, high frequency AC or pulsed DC, a region of plasma is created in the interfacial air gap on account of electrical breakdown of the ambient air. A coupling between the electric field in the plasma and the neutral air near the …

Gmres On A Tridiagonal Toeplitz Linear System, Wei Zhang

University of Kentucky Doctoral Dissertations

The Generalized Minimal Residual method (GMRES) is often used to solve a nonsymmetric linear system Ax = b. But its convergence analysis is a rather difficult task in general. A commonly used approach is to diagonalize A = XΛX-1 and then separate the study of GMRES convergence behavior into optimizing the condition number of X and a polynomial minimization problem over As spectrum. This artificial separation could greatly overestimate GMRES residuals and likely yields error bounds that are too far from the actual ones. On the other hand, considering the effects of both As spectrum and the conditioning of X …

Pore Engineering Of Surfactant Templated Nanoporous Silica Using Supercritical Carbon Dioxide, Kaustav Ghosh

University of Kentucky Doctoral Dissertations

The use of compressed CO2 processing to alter the pore size, structure and timescale of silica condensation in surfactant templated silica thin films and powders is investigated by systematically varying the template structure and CO2 processing conditions. Tailoring the mesoporous materials increases its potential applications, as demonstrated in catalysis, drug delivery, chromatographic and electrode applications. This work demonstrates for the first time the applicability of fluorinated surfactants as templates for the synthesis of mesoporous silica thin films by dip coating. Well-ordered films with 2D hexagonal close-packed pore structure are synthesized in an acid-catalyzed medium using three cationic fluorinated templates of …

Characterization Of Colloidal Nanoparticle Aggregates Using Light Scattering Techniques, Mehmet Kozan

University of Kentucky Doctoral Dissertations

Light scattering is a powerful characterization tool for determining shape, size, and size distribution of fine particles, as well as complex, irregular structures of their aggregates. Small angle static light scattering and elliptically polarized light scattering techniques produce accurate results and provide real time, non-intrusive, and in-situ observations on prevailing process conditions in three-dimensional systems. As such, they complement conventional characterization tools such as SEM and TEM which have their known disadvantages and limitations. In this study, we provide a thorough light scattering analysis of colloidal tungsten trioxide (WO3) nanoparticles in the shape of irregular nanospheres and cylindrical nanowires, and …

Capacitance Metrology Of Curved Surfaces: Study And Characterization Of A Novel Probe Design, Philip T. Smith Jr.

University of Kentucky Doctoral Dissertations

Capacitive sensors are frequently applied to curved target surfaces for precision displacement measurements. In most cases, these sensors have not been recalibrated to take the curvature of the target into consideration. This recalibration becomes more critical as the target surface becomes smaller in comparison to the sensor. Calibration data are presented for a variety of capacitance probe sizes with widely varying geometries. One target surface particularly difficult to characterize is the inner surface of small holes, less than one millimeter in diameter. Although contact probes can successfully measure the inner surface of a hole, these probes are often fragile and …

Controlled Release Of Osteotropic Molecules Stimulates In Vitro Cellular Activity And In Vivo Local Bone Regeneration, Ju Hyeong Jeon

University of Kentucky Doctoral Dissertations

Bone defects treatment and reconstructive surgery continues to increase at a significant rate. Current bone defect treatments are autotransplantation, allograft, and xenografts create many problems such as, inflammation, infection and chronic pain. Moreover, allografts and xenografts arouse immune rejection. These problems have led to development of controlled release system for use as alternatives to autografts, allografts and xenografts in bone repair. There have been many approaches for sustained drug delivery in local bone regeneration using biodegradable polymers and osteotropic biomolecules. This dissertation presents new approaches that apply intermittent drug delivery for local bone regeneration. In the first, the osteotropic molecules …

Enhanced Fire Retardancy Of Vinyl Ester Resins By Combination Of Additives, Grace Chigwada, Charles A. Wilkie

Chemistry Faculty Research and Publications

In pursuit of fire-retardant materials, vinyl ester resins were combined with commercially available fire retardants at lower loadings than that at which they are usually effective when used alone. The thermal stability and flammability of the various combinations of fire retardants were evaluated by thermogravimetric analysis and cone calorimetric analysis. With some combinations, the 50% degradation temperature was improved by about 5-10ºC Different additives affected the flammability to varying extents and some combinations resulted in an enhanced fire retardancy compared to the additives used alone. The combinations that showed the best reductions in the peak heat release rate (PHRR) were …

Sex Offenders, Sexuality, And Social Control: A Case Study In The Social Construction Of A Social Problem, Lisa Marie Kruse

Master's Theses and Doctoral Dissertations

Legislation regarding sex offenses is often passed swiftly with little to no evaluation of the effectiveness of such policies on preventing recidivism and protecting the public. Further, little criticism is raised despite overwhelming evidence that sex offender registration and community notification is ineffective and has many negative consequences. The societal reaction is created through moral panics resulting in views that are not always reflective of the nature of the problem. In effect, the policies put into place in the name of declaring war on the deviant behavior reflect these views and do not target the specific problem.

While the first …

Conserved Amino Acids In Each Subunit Of The Heteroligomeric Trna M1A58 Mtase From Saccharomyces Cerevisiae Contribute To Trna Binding, Sarah G. Ozanick, Janusz M. Bujnicki, Daniel S. Sem, James T. Anderson

Chemistry Faculty Research and Publications

In Saccharomyces cerevisiae, a two-subunit methyltransferase (Mtase) encoded by the essential genes TRM6 and TRM61 is responsible for the formation of 1-methyladenosine, a modified nucleoside found at position 58 in tRNA that is critical for the stability of . The crystal structure of the homotetrameric m¹A58 tRNA Mtase from Mycobacterium tuberculosis, TrmI, has been solved and was used as a template to build a model of the yeast m¹A58 tRNA Mtase heterotetramer. We altered amino acids in TRM6 and TRM61 that were predicted to be important for the stability of the heteroligomer based on …

Eigenvalue Optimization And Its Applications In Buckling And Vibration, Srinivas Gopal Krishna

LSU Doctoral Dissertations

Eigenvalue problems are of immense interest and play a pivotal role not only in many fields of engineering but also in pure and applied mathematics. An in-depth understanding of this class of problems is a pre-requisite for vibration and buckling analyses of structures. Design optimization of structures to prevent failure due to instability (bucking) and vibration introduces the problem of determining optimal physical parameters such that load carrying capacity or the fundamental natural frequency is maximized. A classical example of such problems is the Lagrange problem of determining the shape of the strongest column against buckling. The primary objective of …

How The Internet Is Shaping The Chilean Scientific Community: Globalization And Dependency, Richard B. Duque

LSU Doctoral Dissertations

The Internet has emerged as a catalyst for global knowledge production. This is supported by its positive impacts in the First World. A progressive assessment argues that the Internet will be the "elixir" that brings immediate visibility and relevance to scientific communities in the periphery. Yet, Internet diffusion is often framed by past technology failures that further widen global divides. This characterizes an "affliction" argument. The "teething argument" suggests that adoption within the Third World is tentative at best with benefits unfolding over time in some regions but not others. This dissertation is a qualitative and quantitative study that tests …

Synthesis And Functionalizations Of Tetrapyrrole Derivatives, Lijuan Jiao

LSU Doctoral Dissertations

Chapter 1 of this Dissertation presents a brief overview of the history of tetrapyrrole derivatives and of their fundamental properties. Overviews of porphyrins, benzoporphyrins, chlorins and porphycenes are presented. Work presented in Chapter 2 through Chapter 4 mainly focuses on the syntheses and functionalization of chromophore-extended porphyrin derivatives. Several new synthetic routes for the syntheses and functionalizations of extended porphyrins either at the β-position or at the meso-position of porphyrin are developed. From these improved synthetic routes, the regio-selective syntheses of porphyrin derivatives are described. Chapter 2 mainly focuses on the syntheses of β,β'-fused methylenepropanoporphyrins and related porphyrin dimers. Chapter …

Potential Of A Suite Of Robot/Computer-Assisted Motivating Systems For Personalized, Home-Based, Stroke Rehabilitation, Michelle J. Johnson, Xin Feng, Laura M. Johnson, Jack M. Winters

Electrical and Computer Engineering Faculty Research and Publications

Background

There is a need to improve semi-autonomous stroke therapy in home environments often characterized by low supervision of clinical experts and low extrinsic motivation. Our distributed device approach to this problem consists of an integrated suite of low-cost robotic/computer-assistive technologies driven by a novel universal access software framework called UniTherapy. Our design strategy for personalizing the therapy, providing extrinsic motivation and outcome assessment is presented and evaluated.

Methods

Three studies were conducted to evaluate the potential of the suite. A conventional force-reflecting joystick, a modified joystick therapy platform (TheraJoy), and a steering wheel platform (TheraDrive) were tested separately with …

In Silico Analysis Of Terpene Synthase Genes In Arabidopsis Thaliana, Sam Zwenger, Chhandak Basu

Biological Sciences Faculty Publications

Terpenes are defense chemicals found in wide groups of plants. Terpenoids play a large role in plant development and stress response. The terpene synthase family comprises a diverse set of genes, all which contribute to production of terpenoids. We have used tools of bioinformatics and performed an in silico analysis of developmental and tissue specific terpene synthase gene expression in Arabidopsis thaliana, as well as those expressed due to biotic and abiotic environmental stimuli. Using software tools from Genevestigator, a powerful microarray analyzer, we used multiple tool sets to better understand terpene synthase expression in Arabidopsis, which will hopefully open …