Digital Commons Network^™

Justifying Leadership: A Social Cognitive Approach To Understanding And Predicting Egotistic And Philanthropic Leadership, Katherine R. Helland

Doctoral Dissertations

This study extends the current literature on egotistic and philanthropic leadership by considering the role of social cognition in explaining self-serving versus collective- serving leadership behaviors. Specifically, this study proposed that the overt traits and behaviors that constitute egotistic and philanthropic leadership are surface manifestations of the justification mechanisms (JMs) stemming from uninhibited and inhibited power motives. Thus, the purpose of this study was to identify the JMs that egotistic leaders rely on to enhance the rational appeal of self-serving influence behaviors and the JMs that philanthropic leaders rely on to enhance the rational appeal of collective-serving influence behaviors. Additionally, …

Scenes From The Margins: A Participatory Action Research Study About The Praxis Of Womanhood As A Different Way Of Working In Male-Dominated Professions, Jane Bingham Henry

Doctoral Dissertations

“Scenes from the Margins” is about the experience of women working in male-dominated jobs. Jobs are gendered. They are not gender neutral as we had supposed, as the people who hired us had supposed. Jobs that have traditionally been done by men are done in a masculine way. The masculine “way of working” is not a way that women can work: either it doesn’t fit them (as in what to wear and where’s the restroom) or it doesn’t suit them (as in not conditioned to act that way) or it represents behavior expectations contradictory to expectations for female behavior (as …

Characterization Of Aβ Aggregates Using Hydrogen/Deuterium Exchange Mass Spectrometry, Maolian Chen

Doctoral Dissertations

The work presented in this dissertation aimed to localize the hydrogen-bonding interaction sites within Aβ aggregates associated with Alzheimer’s disease using hydrogen/deuterium exchange mass spectrometry (HDX-MS) coupled with proteolysis. Toward this end, an on-line digestion system utilizing a triaxial electrospray probe as the front end to MS was developed. Using this approach, regions of Aβ(1-40) fibrils and protofibrils that are protected from HDX have been identified. The HDX data show that the C-terminal segment 35-40 and the N-terminal segment 1-19 are highly exposed to exchange in both fibrils and protofibrils, while the internal fragment 20-34 is highly protected from exchange …

Democracy And Capitalism In The American Western, Michelle C. Greenwald

Doctoral Dissertations

In “Democracy and Capitalism in the American Western,” I argue that the Western consistently dramatizes the tensions between democracy and capitalism while revealing the cultural structure of feeling at the time of its production. Since the first modern Western, Wister’s The Virginian (1902), the genre has expressed a concern that the balance between democracy and capitalism has been upset and that this imbalance has engendered or exacerbated other social problems. The genre generally worked to promote consensus about progress until the breakdown of the liberal consensus in the 1960s, when Americans’ belief in progress was shaken, resulting, in turn, in …

Direct Integration Of Surface Enhanced Raman Spectroscopy As A Detection Mode For Microfluidic Separations And Fluid Handling: Μfluidic-Sers, Raynella Magdalene Connatser

Doctoral Dissertations

The arena of microfluidics (µfluidics) has grown over the past decade to encompass myriad separation techniques and exploit copious detection modes. The direct integration of a vibrational spectroscopic detection technique, rich with structural information, onto a platform that is portable and potentially highly controllable such as µfluidics, could offer redress for some of the problems inherent in many of the electrophoretically driven separations carried out on said devices. Herein, this direct integration is explored, and methods of device fabrication, spectroscopic data collection conditions, analytical figures of merit of the detection technique, and separations method development results are discussed. The creation …

Thermal Stability Of Binary Cr-Cr3Si And Ternary Nial-Mo Eutectic Alloys, Aravind Gali

Doctoral Dissertations

The thermal stability of multiphase intermetallics at temperatures to 1400°C was investigated by studying two model eutectic systems: Cr-Cr₃Si having a lamellar microstructure and NiAl-Mo having a fibrous microstructure. In drop cast Cr-Cr₃Si, coarsening was found to be interface controlled. The coarsening rate could be significantly reduced by microalloying with Ce and Re, two elements which were chosen because they were expected to segregate to the Cr-Cr₃Si interfaces and decrease their energies. Similarly, directional solidification, which is also expected to lower the Cr- Cr₃Si interfacial energy, was found to dramatically decrease the …

Scheduling Algorithms For Scalable High-Performance Packet Switching Architectures, Xike Li

Doctoral Dissertations

Packet switching fabrics constitute a fundamental building block of all Internet routers. As a core technology, the switching engine is responsible for enabling multiple input (ingress) ports to be dynamically linked to output (egress) ports, thereby allowing packets to effectively traverse the router. Scheduling algorithms, which play a key role in switching fabrics, determine the dynamic configurations of the input-output matchings. The ever growing need for additional bandwidth and more sophisticated service provisioning in next- generation networks necessitates the introduction of scalable packet scheduling solutions that go beyond legacy schemes.

Switch architectures can be coarsely classified into two categories, in …

Management Of Requirements Changes In Sequence-Based Software Specifications, Lan Lin

Doctoral Dissertations

The sequence-based software specification method was developed to convert ordinary, or typical requirements and requirements statements into mathematically precise specifications, at an acceptable level of abstraction, for deterministic systems. In view of the iterative nature of modern software developing process, requirements, once defined, are not frozen; changes are integrated continuously that need to be accommodated and validated.

The need for managing changes of requirements in sequence-based specifications arises both as a consequence of practicing this method and as a general topic in software requirements engineering. In this research we have explored the theoretical consequences of three major requirements changes in …

A Study Of Japanese Ell Students In Mainstream Classrooms, Kazue Fujiwara

Doctoral Dissertations

In today’s educational arena, English Language Learner (ELL) children have to exert a great deal of energy to be accepted by their mainstream peers. They often shun their primary languages and cultural practices in an effort to become assimilated into the mainstream.

The purpose of this study was to investigate the current socialization practices experienced by particular Japanese ELL intermediate schoolchildren in Masonville (pseudonym), East Tennessee. Much of my interest was sparked by Vygotsky’s (1978) work on the sociality of learning. Through this qualitative research study, I was able to present an in-depth understanding of issues surrounding these children and …

An Investigation Of The Deposition And Characterization Of Materials Formed By Electron Beam Induced Deposition, Wei Li

Doctoral Dissertations

This dissertation deals with EBID – Electron Beam Induced Deposition – a novel bottom up nanofabrication technique. Since EBID was first employed for nano-patterning, a number of empirical factors were investigated to control deposition process. Meanwhile a few theoretical models were proposed based on some fundamental assumptions. So far little work has been done to verify the validity of these assumptions. The main objective of my PhD study, therefore, was to answer whether these assumptions are valid so that unifying the empirical factors and theoretical models would be possible. Electrical resistivity of deposited materials was another interesting topic included in …

A Study Of The Relationship Between Indentation Creep And Uniaxial Creep, James Anthony Lamanna Jr.

Doctoral Dissertations

The purpose of this work is to further the scientific understanding of the relationship between indentation creep and uniaxial creep. The data for this study was obtained by conducting both indentation and uniaxial creep experiments on amorphous selenium. Experiments were designed to collect data over a wide range of creep rates. Specific temperatures were chosen to collect creep data above and below the glass transition temperature of 31°C. The indentation and uniaxial compression data was used to accomplish several objectives.

The first objective was to test the ability of the Oliver-Pharr stiffness equation to predict contact area. The current contact …

The Stability Analysis Of Linear Dynamical Systems With Time-Delays, Ajeet Ganesh Kamath

Doctoral Dissertations

Time-delay systems, which are also sometimes known as hereditary systems or systems with memory, aftereffects or time-lag, represent a class of infinite-dimensional systems, and are used to describe, among other types of systems, propagation and transport phenomena, population dynamics, economic systems, communication net- works and neural network models. A key method for the stability analysis of time- delay dynamical systems is the Lyapunov’s second method, applied to functional differential equations. Specifically, stability of a given linear time-delay dynamical system is typically shown using a Lyapunov-Krasovskii functional, which involves a quadratic part and an integral part. The quadratic part is usually …

Studies On Cytochrome P450 Genes In Drosophila Melanogaster: Relationship Between Over Expression And Ddt Resistance, And Xenobiotic Induction, Srilalitha Kuruganti

Doctoral Dissertations

Cytochrome P450 monooxygenases (CYPs), are involved in the metabolism of a diverse group of endogenous and xenobiotic compounds. In insects, CYPs are involved in conferring resistance against insecticides. In Drosophila, the expression of Cyp6a2, Cyp6a8, Cyp6g1, Cyp6w1 and Cyp12d1 is higher in the resistant compared to susceptible strains. Recent study by Daborn et al (2002, Science, 297, 2253-2256) showed that Cyp6g1 alone can confer resistance phenotype. The aim of my first objective was to re- examine this claim and second to examine the effect of common xenobiotic compounds on the transcriptome of Drosophila.

In first objective, six strains …

Promises To Keep: A Phenomenological Study Of Icu Nurses’ Experiences Caring For Dying Patients, Phyllis Ann King

Doctoral Dissertations

The purpose of this study was to describe the experience of nurses caring for dying patients in the critical care unit. Using a phenomenological approach based on the works of Merleau-Ponty, the researcher completed 14 interviews in which ICU nurses were asked to describe experiences of caring for patients who died while in their care. The interviews were transcribed verbatim and analyzed using a hermeneutical approach developed by Pollio and applied to nursing research by Thomas. Each interview was examined within the context of all the interviews to identify themes found throughout. The world of the ICU was grounded in …

Pseudoelasticity And Shape Memory Effect In Single Crystal Fe3Al, Saurabh Kabra

Doctoral Dissertations

Fe₃Al is an intermetallic compound which has shown some excellent engineering properties and has been widely studied for this reason. It also shows interesting mechanical phenomenon like yield stress anomaly and pseudoelasticity. Mechanical behavior and diffraction studies on the pseudoelastic aspect of Fe₃Al have been presented in this work.

Single crystalline, D0₃ ordered Fe₃Al is known to show pseudoelastic behavior at room temperature. Pseudoelastic behavior was seen in both tension and compression with a distinct tension-compression asymmetry. No strain hardening occurred under tension even at high applied strains as opposed to compression, …

Analysis And Control Of Nonnegative Systems, Jayanthy Ramakrishnan

Doctoral Dissertations

Nonnegative systems are dynamical systems with nonnegative states for random non- negative initial conditions. A subclass of nonnegative systems are compartmental systems characterized by conservation laws.Nonnegative and compartmental systems have widespread applications in biological systems, medical systems, thermodynamic systems, network systems, economic systems, etc.

In this dissertation we have investigated the applications of nonnegative systems in biological and network systems. The specific focus in biological systems has been in the area of pharmacokinetics and we have addressed the consensus problem in network systems. We have specifically focused on the time-delay present in compartmental systems and have investigated the behavior of …

An Investigation Of The Dependability And Standard Error Of Measurement Of Words Read Correctly Per Minute Using Curriculum-Based Measurement, Brian Charles Poncy

Doctoral Dissertations

Generalizability (G) theory was used in two studies to assess the variability in words correct per minute (wcpm) scores caused by student skill and passage variability. Study one was a small “n” study with a sample of 14 third-grade students and study 2 had a sample of 37 third-grade students. Reliability-like coefficients and the SEM based on a specific number of assessments using different combinations of passages demonstrated how manipulating probe variability could reduce measurement error. Results of the two studies showed that 69% and 81% of the variance was due to student skill, 20% and 10% of the variance …

A Multi-Source Model Of Perceived Organizational Support And Performance, Sarah Kay Nielsen

Doctoral Dissertations

The two-fold purpose of this field study was to examine: 1) the collective contributions of supervisor support (PSS), coworker support (PCS), and direct report support (DRS)to an employee’s global sense of organizational support (POS), and 2) the additive value of counterproductive work behaviors (CWB) to a performance outcome model of POS that also includes in-role and extra-role performance. To this end, the researcher predicted a 360-model of POS such that PSS, PCS, and DRS would better predict POS than any individual support variable alone. Additionally, the researcher hypothesized that POS would predict in-role performance, extra-role performance, and CWB over time. …

The Reaction Of Telechelic Polymers At Multicomponent Interfaces: A Molecular Loop Study, James Kevin Rice

Doctoral Dissertations

The work presented in this dissertation attempts to form an understanding of the reaction parameters that govern the reaction of telechelic polymers to form multiply bound polymer chains, resulting in polymer loop formation, at both soft and hard polymeric interfaces. Both theoretical and experimental studies offer evidence that blocky copolymers, as opposed to random or alternating morphologies, are the best compatibilizers of a given polymer blend system. This has been attributed to the fact that blocky copolymers spread across the interface, with each block lying in or near the homopolymer region in which it is miscible, effectively “stitching” the interface …

An Integrated Experimental And Computational Approach To Proteomics: Scaling From High Resolution Qualitative Analysis To Quantitative Measurements With Confidence Evaluation, Chongle Pan

Doctoral Dissertations

As a component of systems biology, proteomics aims to characterize the entire protein complement of an organism, including qualitative identification of protein types and quantitative measurement of protein abundance changes as a function of different cellular states. This dissertation presents an integrated experimental and computational approach to improve proteomic measurements, including qualitative measurements using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) and quantitative measurements with statistically derived confidence evaluation.

Although FT-ICR-MS provides high-performance mass measurements, its potential has not yet been fully explored for proteomics applications. A novel tandem mass spectrometry method was developed for FT-ICR-MS to obtain sequence …

Cross-Species Comparison Of Spermatocyte Responses To Induced Dna Damage: The Laboratory Mouse And Drosophila Melanogaster, Shannon Marie Matulis

Doctoral Dissertations

Maintenance of genomic stability is of crucial importance for all organisms. Cells are continually exposed to exogenous and endogenous agents that can damage DNA. Of special interest is the manner in which male germ cells respond to and repair induced DNA double strand breaks (DSBs), as the propagation of cells carrying damaged DNA can lead to the production of heritable mutations, genetic diseases, and sterility. In addition, treatment of male germ cells with DNA damaging agents, such as many chemotherapeutic drugs, can ultimately result in infertility. This research focused on investigating the mechanisms by which male germ cells, specifically those …

Measurement Of The 32S(P,D)31S Reaction And Its Astrophysical Implications, Zhanwen Ma

Doctoral Dissertations

The ³⁰P(p,γ)³¹S reaction plays a crucial role in the synthesis of heavier nuclear species, from Si to Ca, in nova outbursts on ONe White Dwarfs [26, 28, 35]. However, its rate is very uncertain as a result of the lack of spectroscopic information on the levels above proton threshold in ³¹S. The currently adopted rate of this reaction, based on statistical Hauser-Feshbach calculations [36], could have an uncertainty as much as a factor of 100 higher or lower under nova conditions [26].

To reduce these uncertainties, we have measured differential cross sections for the ³²S(p,d) …

Methylsilane Derived Sic Particle Coatings Produced By Fluid-Bed Chemical Vapor Deposition, James Henry Miller

Doctoral Dissertations

This report describes the research effort that was undertaken to develop and understand processing techniques for the deposition of both low and high density SiC coatings from a non-halide precursor, in support of the Generation IV Gas-Cooled Fast Reactor (GFR) fuel development program.

The research was conducted in two phases. In the first phase, the feasibility of producing both porous SiC coatings and dense SiC coatings on surrogate fuel particles by fluidized bed chemical vapor deposition (FBCVD) using gas mixtures of methylsilane and argon was demonstrated. In the second phase, a combined experimental and modeling effort was carried out in …

Multivariate Nonnormal Regression Models, Information Complexity, And Genetic Algorithms: A Three Way Hybrid For Intelligent Data Mining, Minhui Liu

Doctoral Dissertations

This dissertation develops a novel computationally feasible intelligent data mining and knowledge discovery technique to select the best subset of predictors in multivariate re- gression (MR) models under the assumption that the random error terms of the model follow a general nonnormal family of distributions. Our approach builds an easy-to-use three way hybrid approach by integrating clever statistical modeling procedures based on the information-theoretic measure of complexity (ICOMP) criterion with genetic algorithm (GA) and multivariate nonnormal regression models with Power Exponential (PE) and fam- ily of elliptically contoured (EC) error distributions. This dissertation is composed of four major parts.

First, …

The Impact Of Authority And Agendas In The Management Of Public Authorities: Studying The Relationship Between Public Transportation Authority Boards And Executives, Robert August Schneider

Doctoral Dissertations

Public authorities are a popular form of quasi-governmental institutions and have been extensively chronicled in regards to effective public service delivery. Authorities are exceptionally popular within the public transportation industry but have slowly lost their fiscal power due to the strengthening of parent governments. This dissertation examines the authority structure in public transportation to understand the linkage between this loss of fiscal power and executive management of public authorities by studying the governing board-executive manager relationship. In particular, this dissertation examines the structure and relationship by studying factors impacting relationships and connections between deceased fiscal power and the members recruited …

Multiple Approaches To The Separation Of Amino Acids And Biologically-Relevant Compounds, Lance Andrew Riddle

Doctoral Dissertations

The branch of analytical chemistry known as separations has continued to grow and expand ever since its beginnings a century ago. With all the technological advances occurring to make separations a more powerful technique, the main goal continues to be the desired separation of the compounds of interest in a mixture. Although a desired separation may be achieved, there can always be room for improvement with regards to the time necessary for the separation as well as better resolution of closely-related species as well as enantiomers of the same analyte.

In this work, a variety of separation methods and variations …

Benefits, Corporate Motives, And Communication Patterns In Strategic Philanthropic Relationships As Perceived By Nonprofit Partners, Gregory Grant Rumsey

Doctoral Dissertations

Businesses are increasingly held accountable both to their owners and to the larger society in which they operate. Accordingly, many companies are extending their resources to meet community needs through philanthropic partnerships with nonprofit organizations. Such ventures, however, have drawn close scrutiny of motives and benefits. For example, some consumers register skepticism when evaluating the sincerity of corporate intent in cause-related marketing arrangements. Attribution theory suggests that altruistic reasons for corporate good deeds may be discounted in the context of apparent self-interest. Likewise, a debate between shareholder and stakeholder theorists introduces questions about possibly conflicting obligations facing corporate managers. Some …

Understanding The Role Of The School Resource Officer (Sro): Perceptions From Middle School Administrators And Sros, Teresa Renee Robinson

Doctoral Dissertations

The safety of school children is on the forefront of American’s minds. Recent sporadic shooting of innocent children while they were in the care of school officials is once again raising concerns about the level of safety and security on school campuses. It is apparent that it is increasingly difficult to protect these children while they are at school and it is almost impossible for school administrators to do this alone. It is essential that community leaders, school officials, and school communities acknowledge the necessity of intervention programs to ensure that school campuses are safe and secure. One such intervention …

Implementation Of A Special Education Parent Advisory Committee: A Mixed Methods Investigation Into The Members’ Experience Of Parental Involvement With The School System, Jeffrey Brian Romanczuk

Doctoral Dissertations

This research was intended as a mixed methods case study of the initial effectiveness of one school system’s Special Education Parent Advisory Committee (PAC). It was not until well into the study that it became clear the phenomenon at the root of the this research was actually the broader one of special education parental involvement in the schools, with the Rush County (a pseudonym) School System’s Department of Special Education as the case study. Although phenomenological inquiry is primary, the mixed methods research design employed included both thematic development and verification based on data obtained by both qualitative and quantitative …

Synthesis And Radiolabeling Of Potassium Trifluoroborate Benzylidene Anabaseine Derivatives, Aaron Landon Smith

Doctoral Dissertations

Anabaseine has demonstrated a high, non-selective, affinity for the α7- bungarotoxin sensitive neuronal nicotinic acetylcholine receptor binding site found in small cell lung carcinoma. The benzylidene anabaseine derivatives of anabaseine have shown a selective affinity for these binding sites. These studies suggest that radiolabeled benzylidene anabaseine derivatives could act as potential imaging agents to aid in the early detection of lung cancer.

This dissertation outlines the strategy and methods employed in the synthesis of a family of potassium trifluoroborate derivatives of benzylidene anabaseine and their subsequent halogenation. Two of the trifluoroborate salts were converted to their radiolabeled analogues for potential …