Digital Commons Network^™

Rethinking A Carbon Tax In An Era Of Budget Deficits, Chad Covert

Chancellor’s Honors Program Projects

No abstract provided.

Knoxville Area Rescue Mission And Ut Fraternity System, Armond M. Agassi

Chancellor’s Honors Program Projects

No abstract provided.

Communication Breakdown: The Introduction Of Several Communication Technology Innovations, The Societal Effects, And The Disconnect In The Way That We Connect., Christopher Vincent Tramontana

Chancellor’s Honors Program Projects

No abstract provided.

The Relation Between Globalization And Personal Values Across 53 Countries And 28 Years, Irina Florentina Cozma

Doctoral Dissertations

The aim of this research is to examine the relation between the change in globalization and change in personal values (work and general life values). An analysis across 28 years and 53 countries suggests that changes in different personal values have different relations with the change in globalization. Moreover, this relation is influenced by the demographic characteristics of the sample. The present research contributes to the literature in the following ways: 1) linking globalization (an economic concept) and personal values (a psychological concept), 2) providing an analysis of the relation between the change in personal values and the change in …

Dendroclimatology And Woodland Dynamics On The Volcanic Badlands Of Western New Mexico, U.S.A., Mark Daniel Spond

Doctoral Dissertations

My dissertation research addressed woodland dynamics and dendroclimatology on the volcanic badlands of western New Mexico. The research was intended to complement previous studies by: (1) assessing vegetation structure and composition dynamics at El Malpais National Monument between 1948–2010 using repeat photography; (2) improving knowledge of the influence of climate and land use on vegetation dynamics at El Malpais National Monument; (3) providing a unique tree-ring data set from Rocky Mountain juniper growing on the malpais; (4) elucidating relationships between Pacific teleconnections and radial growth in Rocky Mountain juniper; and (5) improving understanding of the dynamic nature of climate in …

Reliability Analysis Of Nanocrystal Embedded High-K Nonvolatile Memories, Chia-Han Yang

Doctoral Dissertations

The evolution of the MOSFET technology has been driven by the aggressive shrinkage of the device size to improve the device performance and to increase the circuit density. Currently, many research demonstrated that the continuous polycrystalline silicon film in the floating-gate dielectric could be replaced with nanocrystal (nc) embedded high-k thin film to minimize the charge loss due to the defective thin tunnel dielectric layer.

This research deals with both the statistical aspect of reliability and electrical aspect of reliability characterization as well. In this study, the Zr-doped HfO₂ (ZrHfO) high-k MOS capacitors, which separately contain the nanocrystalline zinc …

Progress Toward A Redetermination Of The Neutron Lifetime Through The Absolute Determination Of Neutron Flux, Andrew T Yue

Doctoral Dissertations

The reported lifetime in an in-beam neutron lifetime experiment performed at NIST was t_n = (886.3 ± 3.4) s. The largest source of uncertainty was the efficiency of the neutron flux monitor (0.3% relative uncertainty). The flux monitor operates by counting charged particles produced when neutrons impinge on a ⁶Li foil. Its efficiency was calculated from the ⁶Li thermal neutron cross section, the solid angle subtended by the charged particle detectors, and the amount of neutron-absorbing material present on the foil. An absolute black neutron detector for cold neutron beams has been developed to measure the efficiency …

Power And Identity In Three Gothic Novels: The Mysteries Of Udolpho, Caleb Williams, And Melmoth The Wanderer., Jerry Jennings Alexander

Doctoral Dissertations

Abstract

This study examines the connection between power and identity in three Gothic novels, Ann Radcliffe’s The Mysteries of Udolpho, William Godwin’s Caleb Williams, and Charles Robert Maturin’s Melmoth the Wanderer. Following the identity theories of Erik Erikson, I argue that identity has biological, psychological, and social aspects that are subject to change over time. As individual agency—the ability to function as a person—depends on a relatively certain and stable sense of personal identity, Gothic villains—both individuals and institutions—gain and maintain their power by disempowering their victims. In order to do so, they work to compromise these …

The Relationship Between Secondary School Teachers' Perceptions Of Principal Ethical Leadership And Organizational Health, Jessica H Chambers

Doctoral Dissertations

The purpose of this descriptive, correlational study was to determine if any significant relationships existed between secondary school teachers’ perceptions of principal leader integrity as measured by the Perceived Leadership Integrity Scale ([PLIS], Craig & Gustafson, 1998) and schools’ organizational health as perceived by secondary school teachers and gauged by the Organizational Health Inventory for Secondary Schools ([OHI-S], Hoy & Feldman, 1987). The study also explored the seven OHI-S dimensions: (1) Institutional Integrity, (2) Initiating Structure, (3) Consideration, (4) Principal Influence, (5) Resource Support, (6) Morale, and (7) Academic Emphasis—and their relationships with the demographics of the sample. The sample …

Functional Diversity In The Hyper-Diverse Mangrove Communities In Papua New Guinea, Lawong Balun

Doctoral Dissertations

Variation in plant functional traits reflect the differences in an environment a species occupies and the variation in the functional traits across an environmental gradient and growth form reflects the functional performance of the coexisting species. Therefore, detecting the differences in functional traits of species is important to our understanding of the performance of species. The leaf functional traits; Leaf mass per area (LMA) and vein density (D_V) are key traits in the resource use strategies and photosynthetic gas exchange capacity (A_max, g_smax) of all plants. Mangroves occupy a hypersaline narrow ecological range and …

Investigation Of Host Responses Upon Infection Of Distinct Toxoplasma Strains, Rachel Devonne Hill

Doctoral Dissertations

Toxoplasma gondii is the causative agent of Toxoplasmosis in human and animals. T. gondii isolates are highly diverse. Hundreds of genotypes have been identified, but only three clonal lineages, namely Type I, II and III are prevalent worldwide. In mouse model, T. gondii strains can be divided into three groups based on their virulence, including the virulent (LD₁₀₀=1), the intermediately virulent (LD₅₀ = 10³-10⁴) and the non virulent (LD₅₀ > 10⁵). The clonal Type I, II and III T. gondii strains belong to these three groups, respectively. Epidemiologic studies suggest the …

Exploring The Role Of Email, Blackboard, And Facebook In Student-Instructor Interactions Outside Of Class: A Mixed Methods Study, Olivia Laura Halic

Doctoral Dissertations

This dissertation was a mixed methods triangulation design combining quantitative and qualitative components. The purpose of this study was twofold. First, it examined the association between the frequency and quality of students’ online interactions with instructors and the quality of student-instructor relationship. Second, this study explored the meanings of student-instructor interactions mediated by online tools. Quantitative data were collected via an online survey from 320 undergraduate students enrolled at a public research university. Qualitative data sources were in-depth interviews with six undergraduate students and six professors, observations of student-instructor interactions on Facebook, and artifacts of student-instructor interaction via email. Hierarchical …

The Role Of Social Network Websites In Consumer-Brand Relationship, Hyejune Park

Doctoral Dissertations

This research explored the phenomenon of online social network in the context of consumer-brand relationship. The specific research objectives were: (a) to examine whether perceived benefits of a Brand’s Social Network Website (BSN) predict BSN relationship quality; (b) to investigate whether perceived benefits of BSN predict perceived relationship investment; (c) to examine if online social connection strengthens the relationship between perceived benefits of BSN and BSN relationship quality; (d) to examine if experience with BSN strengthens the relationship between perceived benefits of BSN and BSN relationship quality; (e) to investigate whether BSN relationship quality predicts brand relationship quality; (f) to …

Polymer Nanocomposite Analysis And Optimization For Renewable Energy And Materials, Nathan Walter Henry

Doctoral Dissertations

Polymer nanocomposites are an important research interest in the area of engineering and functional materials, including the search for more environmentally materials for renewable energy and materials. The ability to analyze and optimize morphology is crucial to realizing their potential, since the distribution of materials in the composite strongly influences its properties. This dissertation presents research into three different polymer nanocomposite systems with three different applications that underscore the need to understand and control the composite morphology to succeed.

The first project details work on development of a copolymer compatibilizer to enhance the dispersion of the plant-derived biopolymer lignin in …

Adsorption Of Hydrogen Onto Bare And Metal Decorated Metal Oxides, Paige Elizabeth Landry

Doctoral Dissertations

Catalytically relevant metal clusters were deposited on metal oxide supports. Palladium and gold were deposited on mixed morphology ZnO, and palladium was deposited on MgO(100). The materials were characterized with electron microscopy, photoluminescent spectroscopy, and X-ray photoelectron spectroscopy. The behavior of hydrogen on these materials, as well as bare ZnO, was studied using volumetric isotherms. The isotherms were used to determine the monolayer gas coverage, surface

area, and heats of adsorption of hydrogen on these materials over the temperature range of approximately 8-13 K. At the temperatures and pressures studied, hydrogen physically adsorbed onto the materials. Additional investigations with inelastic …

Experimental Investigations Of Fluid–Mineral Interactions In Olivine And Dolomite, Michael Thomas Deangelis

Doctoral Dissertations

Geochemical processes involving the interaction of fluids and minerals occur in nearly every environment on the surface and in the crust of the Earth. The variety of fluid–mineral processes on the Earth is quite diverse, and these various processes can occur under a large range of geochemical conditions. Aqueous dissolution and alteration, hydration, protonation, solution–precipitation, diffusion, and fluid and isotope exchange are among the many fluid–mineral interaction processes that contribute to the overall cycling of elements on Earth. This dissertation uses analog experiments to examine fluid­–mineral interaction processes found in different geological environments and under a range of environmental conditions. …

Exploring The Concerns Of Teachers And Principals Implementing Response To Intervention In A Pilot Project: Where Policy And Practice Collide, Lisa Michele Bilton

Doctoral Dissertations

The purpose of this mixed-methods, multi-site study was to identify and explore the concerns of teachers and principals implementing a pilot Response to Intervention (RTI) model in three elementary schools in the southeast United States and to determine whether these concerns differed significantly from the beginning to the end of the first year of implementation. The Stages of Concern from the Concerns-Based Adoption Model (George, Hall, & Stiegelbauer, 2006; Hord, Rutherford, Huling, & Hall, 2004) served as the theoretical framework for the design and analysis of this study.

Between Fall 2008 and Spring 2009, 18 participants, including six administrators and …

Toward Personalized Medicine: The Potential Role Of Rna Interference In Plasma Cell Dyscrasia, Jonathan E Phipps

Doctoral Dissertations

A major contributor to mortality in patients with plasma cell dyscrasias (PCDs); i.e., multiple myeloma, light chain deposition disease and AL amyloidosis is the deposition as insoluble aggregates of monoclonal immunoglobulin light chain proteins (LC) in the kidneys and other organs. Currently anti-plasma cell chemotherapies are used to reduce LC synthesis, and slow deposition. While effective, these treatments are toxic, non-specific, expensive, and might not be appropriate in all cases, making the identification of an alternate means of reducing toxic LC species desirable. To this end, we have investigated whether RNA interference (RNAi) could achieve these goals.

Human (RPMI 8226, …

The Role Of A Glycosyltransferase, St6gal I In Regulating Viral Specific T And B Cell Responses, Junwei Zeng

Doctoral Dissertations

Glycosylation is one of the most abundant post-translational modifications of proteins. Glycoproteins participate in virtually all aspects of cellular functions. ST6Gal I is a glycosyltransferase highly expressed by B and T cells. Here, we interrogated the role of ST6Gal I in viral specific B and T cell immune responses, as well as examined how loss of this enzyme impacted viral pathogenesis.

First, to understand how loss of ST6Gal I expression impacted viral specific humoral responses, we infected ST6Gal I^-/- mice with influenza virus. We discovered that loss of ST6Gal I expression results in both reduced influenza specific antibodies levels …

Calculation Of Physical Processes At The Lhc, Usama Adnan Al-Binni

Doctoral Dissertations

With the start of the age of the Large Hadron Collider (LHC) two challenges face theoreticians and computational physicists. The first is about understanding theories beyond the Standard Model and producing verifiable predictions that can be tested against what the LHC and subsequent machines would produce. The second is to improve computational methods so that the new experimental precision is matched by a theoretical one. But this improvement is also crucial for the detection of potential deviations from Standard Model predictions and possibly also finding the elusive Higgs. This work tries to address problems in both areas. In the first …

Theoretical And Empirical Essays On The Effects Of Proposed And Existing Environmental Policies, Luke Robert Jones

Doctoral Dissertations

This dissertation consists of three chapters that explore environmental policy. Chapter 1 empirically investigates the potential for incentives to encourage the adoption of low-emission alternatives to gasoline motorcycles. Hanoi, Vietnam, like many Asian cities, is experiencing rapid growth in the ownership of personal gasoline-powered motorcycles and scooters, and along with this heightened air quality issues. Electric scooters have the potential to reduce air pollution as an alternative to gasoline-powered motorcycles; however, electric scooters have yet to penetrate the Vietnamese and other large Asian markets. This study uses a choice experiment survey to elicit the demand for electric scooters, with focus …

Biofuel And Water Resources, Xia Zhou

Doctoral Dissertations

This dissertation focuses on the economic and environmental benefits of planting switchgrass as a bioenergy feedstock. The first chapter presents a dynamic optimization model of fertilizer and land allocation between switchgrass and corn to estimate economic benefits. Subsequent chapters utilize Geographic Information System (GIS)-based Soil and Water Assessment Tool (SWAT) to be calibrated to evaluate the environmental (nutrient and sediment loading) effects of land use conversion to switchgrass production on water quality and analyze the Water Quality Trading (WQT) program with cost-effectiveness ratios ordered for abatements of nutrient loadings in an East Tennessee watershed.

Assessing The Efficiency Of Phenotypic And Molecular Genotype Selection Methods For Complex Traits In Soybean, Catherine Nyaguthii Nyinyi

Doctoral Dissertations

Soybean [Glycine max (L.) Merrill] is an important source of protein and oil for both nutritional and industrial applications. Increasing seed yield and protein concentration is the main goal of many soybean breeders to meet market demands. Soybean breeders have occasionally succeeded in producing high yielding cultivars with increased protein content using conventional means despite the negative correlation that exists between these two traits. The efficiency of breeding for seed yield and protein concentration improvement in soybean could be increased using marker assisted selection (MAS) breeding strategies to select genotypes containing favorable alleles for faster cultivar development. The objective …

Nano-Dispersing Lipophilic Antimicrobials For Improved Food Safety, Bhavini Dipak Shah

Doctoral Dissertations

Naturally occurring food antimicrobials such as plant essential oils are receiving tremendous interest as intervention systems to enhance microbiological safety and quality. Poor water solubility of essential oils makes it difficult to incorporate them in foods, impacting visual appearance, antimicrobial effectiveness, and possibly organoleptic properties. Engineered nanoscale delivery systems can principally solve these challenges, but those based on low-cost food ingredients and inexpensive and scalable processes are currently scarce. This dissertation presents a simple and scalable two-step technology to prepare nano-delivery systems. The first encapsulation step, based on emulsion-evaporation, involves preparing emulsions composed of an oil phase with thymol or …

Relationships Between Externalization Behaviors And Team Cognition Variables In Distributed Teams, Lisa Ann Delise

Doctoral Dissertations

Members of distributed teams often have difficulty sharing unique information with their teammates during decision making tasks. These communication problems may hinder the development of cognitions that allow team members to reach a similar understanding of the content and structure of task information. The C-MAP intervention (Rentsch, Delise, & Hutchison, 2008) was designed to assist team members in sharing their information through behaviors that convey the content and structure of information by using specific communication behaviors and developing a knowledge object. In the present study, the knowledge object took the form of a white board where information was posted and …

Optimal Draw Area And Feedstock Delivery Schedule Of Biorefineries In The Southeast U.S. Based On Least Cost And Producers’ Willingness To Plant A Dedicated Energy Crop, Wen Tu

Doctoral Dissertations

To overcome the limitations of starch-based and sugar-based ethanol, scientists propose to expand the use of cellulosic ethanol. Cellulosic ethanol is a biofuel produced from wood, grasses, or the non-edible parts of plants. As the U.S. has a large cellulosic biomass production base (Perlack et al., 2006), production of ethanol from cellulosic feedstock and use of ethanol as a substitute for gasoline could help promote rural development, reduce green house gases emissions, and increase energy independence. This study focuses on the cost of producing cellulosic ethanol along with the amount of carbon sequestered and emitted using switchgrass as a feedstock. …

Essays On State Lottery Demand And Revenue Earmarks, Kara Diane Smith Mitchell

Doctoral Dissertations

Since the first modern state-sponsored lottery was instituted in New Hampshire in 1964, lotteries have proliferated to 42 states and the District of Colombia. With little exception, research has shown that these lotteries are a highly regressive form of taxation. However, this body of research does not take into account a theoretical finding that the manner in which collected funds are earmarked impacts participation patterns. The goal of this dissertation is to test this finding empirically.

In the first analysis, I use sales data from the Tennessee Education Lottery and scholarship data from the TEL Scholarship program to test this …

Self-Direction And Technology Use Among New Workforce Entrants, Lila Louise Holt

Doctoral Dissertations

With the knowledge age evolving, colleges and universities should be ever vigilant to assure that the pedagogies practiced are adequately preparing future workers with skills required to keep pace (Scardamalia & Bereiter, 2006). Business managers have identified self-direction and technology use as increasingly important in the 21^st century (Partnership for 21st Century Skills, 2006), yet a gap in research of pedagogies that advance self-directedness and promote technology use has been found. To help identify new pedagogies, the purpose of this study was to identify the relationship between self-directed learning (SDL) and technology use of people …

Extending Depth Of Field Via Multifocus Fusion, Harishwaran Hariharan

Doctoral Dissertations

In digital imaging systems, due to the nature of the optics involved, the depth of field is constricted in the field of view. Parts of the scene are in focus while others are defocused. Here, a framework of versatile data-driven application independent methods to extend the depth of field in digital imaging systems is presented. The principal contributions in this effort are the use of focal connectivity, the direct use of curvelets and features extracted by Empirical Mode Decomposition, namely Intrinsic Mode Images, for multifocus fusion. The input images are decomposed into focally connected components, peripheral and medial coefficients and …

Artificial Nutrition And Hydration For Infants With Life-Terminating Conditions: Rethinking The Catholic Position, L William Uhl

Doctoral Dissertations

Infants with life-terminating conditions (ILTCs) are those whose conditions prevent them from living more than two years. When these infants have difficulty assimilating food and fluids orally, doctors can provide nutrition and hydration through artificial means. While artificial nutrition and hydration (ANH) can provide benefits, it can also result in complications leading to pain and/or distress in addition to that which an ILTC may already be experiencing from one or more underlying conditions.

Many medical experts maintain that withholding or withdrawing ANH can help a patient’s body produce its own analgesics. I consider four categories of ILTCs: 1) infants who …