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2007

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Investigation Into Mitigation Of Alkali-Silica Reaction Using Selected Scms In Presence Of Potassium Acetate Deicer, Jigar Desai Dec 2007

Investigation Into Mitigation Of Alkali-Silica Reaction Using Selected Scms In Presence Of Potassium Acetate Deicer, Jigar Desai

All Dissertations

Alkali-silica reaction (ASR) is one of the most recognized durability problems in concrete leading to premature deterioration of different types of concrete structures. Recent investigation into premature deterioration of airfield concrete pavements indicated the aggressive effects of alkali-acetate and alkali-formate based deicers on concrete containing marginal aggregates, in particular on their potential to induce ASR.. This dissertation presents the results and analysis from a research study conducted to evaluate the effectiveness of selected supplementary cementitious materials-SCMs (fly ash and slag) as ASR mitigation measures in presence of potassium acetate based deicer.
Five aggregates that encompass a range of mineralogies and …

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Personality Predictors Of Motivation To Lead, Tracey Tafero Dec 2007

Personality Predictors Of Motivation To Lead, Tracey Tafero

All Dissertations

In recent years, there has been a renewed interest in understanding the relationship between personality traits and leadership. Recent research suggests that some personality variables are related to leadership. However, research has rarely examined the process by which personality may impact leadership. This study explores the relationship between personality and motivation to lead, a proposed intervening variable between personality and leadership. In addition, this study looks at both broad and narrow measures of personality as predictors of motivation to lead. The current study both replicates and extends the findings of Chan & Drasgow (2001). Results reveal that facet-level personality scales …

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A Comparative Fault Diagnosis Methodology Based On Time Series Analysis Of System's Signals, Hany Bassily Dec 2007

A Comparative Fault Diagnosis Methodology Based On Time Series Analysis Of System's Signals, Hany Bassily

All Dissertations

The detection of system anomalies represents an important task in safety critical systems. Over the past two decades, advances in data manipulation techniques and sensor technology have contributed to the widespread application of signal processing concepts for fault diagnosis. However, the majority of these signal processing, or data driven, diagnostics do not possess the redundancy level exhibited in conventional model-based methods. Among signal processing methods, time series analysis is advantageous since it offers insight into the underlying dynamics and forecasts system behavior. Furthermore, the data driven method allows the depiction of system dynamics with an increased level of redundancy. This …

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The Diffusion Of The Reggio Emilia Approach Among Early Childhood Teacher Educators In South Carolina, Julie Hartman Dec 2007

The Diffusion Of The Reggio Emilia Approach Among Early Childhood Teacher Educators In South Carolina, Julie Hartman

All Dissertations

Growing numbers of U.S. educators are traveling to the northern Italian town of Reggio Emilia to study the innovative, arts-based approach to early education developed in the town's municipal infant-toddler and pre-primary programs now commonly referred to as the Reggio Emilia Approach. And though there is no way of knowing exactly how many educators and early childhood programs across the U.S. are currently making use of the approach, increasing numbers of U.S. colleges and universities are including the approach in both their ECE teacher preparation as well as campus child development programs, suggesting the Reggio Emilia Approach (REA) is diffusing …

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The Molecular Characterization Of The Virus And Virus-Like Agents Present In Ta Tao 5 Germplasm Of Prunus Persica , Diana Marini Dec 2007

The Molecular Characterization Of The Virus And Virus-Like Agents Present In Ta Tao 5 Germplasm Of Prunus Persica , Diana Marini

All Dissertations

Peach production in the southeastern United States is limited by late spring freezes. Ta Tao 5 germplasm, used either as an interstem or by chip bud inoculation, has been shown to delay bloom and avoid the effects of these late freezes. The growth modification is graft transmissible and the germplasm has been found to be infected with ACLSV, APruV-3, and PLMVd. Using a combination of PCR, cloning, and sequencing techniques, a molecular characterization of the three graft-transmissible agents present in Ta Tao 5 has been completed.

The complete nucleotide sequence of the genome of the isolate of ACLSV (ACLSV-Ta Tao …

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The Consumer Choice Of E-Channels As A Purchasing Avenue: An Investigation Of The Communicative Aspects Of Information Qualtiy , Jaejoo Lim Dec 2007

The Consumer Choice Of E-Channels As A Purchasing Avenue: An Investigation Of The Communicative Aspects Of Information Qualtiy , Jaejoo Lim

All Dissertations

A conspicuous paradox is evident in the statistics concerning purchases over the internet. While a majority of the US population uses the internet to seek product information for purchasing decisions, less than two percent of actual retail sales occur on the Internet. To explain this small ratio of e-channel choice for purchase, a comprehensive model that extends DeLone and McLean's (2004) e-commerce success model was developed. The model centers on the importance of perceived information quality and its relationship to e-channel choice as a purchasing channel. Using the overarching theoretical frame of motivation, two questions were examined: (a) what influences …

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An Experimental And Numerical Study Of The Film Casting Process, Kenneth Aniunoh Dec 2007

An Experimental And Numerical Study Of The Film Casting Process, Kenneth Aniunoh

All Dissertations

Film casting is a common industrial process used to produce polymeric films. During film casting, a polymer melt is extruded through a flat die before rapid cooling on a chill roll. The chill roll velocity is faster than the velocity at which the melt exits the die, thus the polymer melt is stretched and oriented in an extensional flow. The material properties and processing conditions have a significant impact on the process and the final thermal/mechanical properties of the film produced.
Optimization of industrial scale film casting processes is still greatly dependent on trial and error methods. Therefore, this work …

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Ultrahydrophobic Surface Modification Of Polymeric Fibers And Inorganic Substrates, Karthik Ramaratnam Dec 2007

Ultrahydrophobic Surface Modification Of Polymeric Fibers And Inorganic Substrates, Karthik Ramaratnam

All Dissertations

The wettability of a solid surface is a very important property, and is governed by both the chemical composition and the geometrical microstructure of the surface. Wettability and repellency are important properties of solid surfaces from both fundamental and practical aspects. The wettability of the solid surface is a characteristic property of materials and strongly depends on both the surface energy and the surface roughness. These properties may be approached by mimicking hydrophobic structures created by nature on lotus leaf surface. The lotus effect is based on surface roughness caused by different microstructures together with the hydrophobic properties of the …

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Lithium-Conducting Ionic Melt Electrolytes From Oligomeric Ethylene Glycols: Synthesis And Characterization, Boutros Hallac Dec 2007

Lithium-Conducting Ionic Melt Electrolytes From Oligomeric Ethylene Glycols: Synthesis And Characterization, Boutros Hallac

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Commercial lithium ion cells consist of electrolytes that undergo salt concentration polarization which is acute upon high discharge currents. This type of polarization occurs as a result of the mobility of more than one ionic species in the presence of an electric field. One way to overcome it is by employing a material that would allow the mobility of one ionic species. This thesis will describe the synthesis and characterization of several fluorosulfonimide and fluorosulfonate based ionic liquids/melts as electrolytes having lithium as the only mobile ion. These materials were prepared by the nucleophilic addition reaction of a deprotonated polyether …

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Nesting And Foraging Characteristics Of The Black Carpenter Ant Camponotus Pennsylvanicus (Degeer) (Hymenoptera: Formicidae), Donald Oswalt Dec 2007

Nesting And Foraging Characteristics Of The Black Carpenter Ant Camponotus Pennsylvanicus (Degeer) (Hymenoptera: Formicidae), Donald Oswalt

All Dissertations

Potential nesting sites of Camponotus pennsylvanicus (DeGeer) were investigated in South Carolina to determine if nesting sites features could be characterized by habitat features for black carpenter ant nests. Environmental data from forested plots showed large-scale habitat features such as vegetation density and canopy cover were not useful as indicators for the presence or absence of nests. Small-scale individual nest characteristics such as diameter at breast height of trees, log length, tree defect type or tree species were better indicators of occupied nests. In my study, C. pennsylvanicus preferred mature hardwood (Quercus spp.) trees approximately 30 cm in diameter and …

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The Enabling Potential Of Losses In Later Life: Linking Constraints To Selective Optimization With Compensation, Begum Aybar-Damali Dec 2007

The Enabling Potential Of Losses In Later Life: Linking Constraints To Selective Optimization With Compensation, Begum Aybar-Damali

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A substantial literature describes factors that prevent people from participating in and enjoying leisure and recreation activities. These factors have often been regarded as negative and helping individuals use strategies to maintain participation has been advised. The primary purpose of this study was to explore whether losses catalyzed selective optimization of resources. This exploratory research investigated the relationship among (1) life satisfaction, (2) change in leisure behavior, (3) life management strategies of selection, optimization, and compensation, (4) enhancement outcomes, and (5) leisure satisfaction. The participants of the study were recruited from older adults who attended activities and classes provided by …

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Apparent Quality Of Alternative Halftone Screening When Compared To Conventional Screening In Commmercial Offset Lithography, Garth Oliver Dec 2007

Apparent Quality Of Alternative Halftone Screening When Compared To Conventional Screening In Commmercial Offset Lithography, Garth Oliver

All Dissertations

ABSTRACT

Printers are still concerned with craftsmanship and are always looking for means to produce faster print jobs with improved quality. The invention of new halftone screening techniques is one of the methods imaging companies have used as an attempt to improve the quality of the printed piece. These techniques can possibly improve the aesthetic qualities and fidelity of printed reproductions, therefore printers and students of printing need to study these techniques to ensure that the benefits outweigh the costs of implementation.
This experimental study was conducted to measure the quality of printed halftones that were screened with three different …

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Effect Of Carbon Nanofibers On Microstructure And Properties Of Polymer Nanocomposites, Sungho Lee Dec 2007

Effect Of Carbon Nanofibers On Microstructure And Properties Of Polymer Nanocomposites, Sungho Lee

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Nano-modifiers are typically three orders of magnitude smaller in size than their micro-counterparts. At this scale, interactions between matrix molecules and the nano-modifiers can lead to novel physical and chemical properties of the resulting nanocomposites. Carbon nanofibers (CNFs) are a class of nano-modifiers that has received significant attention recently because they have superior electrical conductivity and mechanical properties with a high aspect ratio (length over diameter). Several recent research studies have focused on enhancing electrical and mechanical performance of composites in the presence of CNFs. However, the influence of CNFs on the structure of the polymer matrix is important in …

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Water Quality Dynamics Of Lake James In The Catawba River Basin Of North Carolina, Susan Stokes Dec 2007

Water Quality Dynamics Of Lake James In The Catawba River Basin Of North Carolina, Susan Stokes

All Dissertations

Lake James is the uppermost hydropower reservoir in the Catawba River drainage in North Carolina. The Lake James Assessment (LJA) was a descriptive study initiated between Clemson University and Duke Energy Corporation to explore the physical, chemical and biological dynamics of this oligotrophic reservoir from spring 1997 through fall 1999 (Schindler 1997). The goals of this study were to ascertain the primary drivers for the chemical dynamics of Lake James, to assess the quantities of constituents entering and leaving the reservoir, where these chemicals were incorporated within the reservoir basins, and to evaluate the efficacy of the LJA chemical budget …

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Studies Of The Stability And Potential Applications Of Pyrrolidinofullerenes And Other Fullerene Derivatives, Olena Lukoyanova Dec 2007

Studies Of The Stability And Potential Applications Of Pyrrolidinofullerenes And Other Fullerene Derivatives, Olena Lukoyanova

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Over the last decade, the variety of chemically modified fullerenes and their potential applications has increased significantly. Among fullerene derivatives, pyrrolidinofullerenes are one of the most widely synthesized types since they can be easily and efficiently obtained via simple reactions from both empty and endohedral fullerenes. Although fullerenes in general and pyrrolidinofullerenes in particular have been considered for numerous applications in electronic and optoelectronic devices, photovoltaics, medicinal chemistry, etc., their potential application in the evolving field of molecular electronics has not been extensively explored. The envisioned role of the fullerenes usually involves storage or transport of electrons. Therefore, studies of …

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Evaluation Of Human Prolactin, Its Antagonist, And Antagonist-Based Fusion Proteins As Chemopreventative And Therapeutic Agents, Seth Tomblyn Dec 2007

Evaluation Of Human Prolactin, Its Antagonist, And Antagonist-Based Fusion Proteins As Chemopreventative And Therapeutic Agents, Seth Tomblyn

All Dissertations

Cancer is a collection of diseases with many different manifestations and is the second leading cause of death in the United States. Breast cancer accounts for nearly one third of cancer diagnosis in women. Prolactin (PRL) functions as a lactogen and as a mammary gland differentiation factor. PRL acts in an autocrine/paracrine manner within the mammary gland and in breast tumors which implies PRL may be involved in breast cancer progression. This is corroborated by the PRLR over-expression in breast cancer cells lines and the majority of patient biopsies. These reasons make PRL and PRLR attractive targets for breast cancer …

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Issues In Model Selection, Minimax Estimation, And Censored Data Analysis, Meng Zhao Dec 2007

Issues In Model Selection, Minimax Estimation, And Censored Data Analysis, Meng Zhao

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In this dissertation, we address several research problems in statistical inference. We obtain results in the following four directions: linear model selection, minimax estimation of linear functionals, Bayes type estimators for the survival functions based on right censored data, and estimation of survival functions based on doubly censored data.

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Diversity And Abundance Of Ants At Forest Edges , Eric Paysen Dec 2007

Diversity And Abundance Of Ants At Forest Edges , Eric Paysen

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Fragmented habitats are a common result of human activities that involve the clearing of native vegetation for various land uses. Habitat fragmentation has two primary and inseparable components: habitat loss and insularization. Landscape-level connectivity in fragmented habitats is diminished for many species, and edge characteristics become more important as the edge-to-interior ratio increases. The study of the effects of edges on biodiversity has compelled ecologists to study them for over a century and has influenced the design and management of natural preserves. Invasion of habitats by non-native species is a phenomenon that coincides with the increased human activity typical of …

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Influence Of Mercury-Dissolved Organic Matter (Dom) Complexation On Toxicity In Natural Waters, Christina Mcnaughton Dec 2007

Influence Of Mercury-Dissolved Organic Matter (Dom) Complexation On Toxicity In Natural Waters, Christina Mcnaughton

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Global industrialization, coupled with a large biogeochemical cycle that moves mercury through the environment, has resulted in higher mercury concentrations being detected in many environmental compartments. Although the presence of mercury in each compartment has the potential to elicit toxicity, mercury found in natural waters provides the greatest risk, due to the various reactions it can undergo, resulting in a plethora of different species.
Due to the fact that mercury contamination in aquatic systems has the potential to bioaccumulate and biomagnify up the food chain and cause toxicity, understanding the behavior of mercury in these systems is imperative in the …

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Structure Formation Inside Triaxial Dark Matter Halos: Galactic Disks, Bulges, And Bars, Clayton Heller, Isaac Shlosman, Evangelie Athanassoula Dec 2007

Structure Formation Inside Triaxial Dark Matter Halos: Galactic Disks, Bulges, And Bars, Clayton Heller, Isaac Shlosman, Evangelie Athanassoula

Physics & Astronomy: Faculty Publications

We investigate formation and evolution of galactic disks immersed in assembling live DM halos. Models have been evolved from cosmological initial conditions and represent the collapse of an isolated density perturbation. The baryons include gas participating in star formation (SF) and stars with the energy feedback onto the ISM. We find that (1) the triaxial halo figure tumbling is insignificant and the angular momentum (J) is channeled into the internal circulation, while the baryonic collapse is stopped by the centrifugal barrier; (2) density response of the (disk) baryons is out of phase with DM, thus washing out the …

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Identification Of The Possible Defect States In Poly(3-Hexylthiophene) Thin Films, D.-Q. Feng, A. N. Caruso, Yaroslav B. Losovyj, D. L. Schulz, Peter A. Dowben Dec 2007

Identification Of The Possible Defect States In Poly(3-Hexylthiophene) Thin Films, D.-Q. Feng, A. N. Caruso, Yaroslav B. Losovyj, D. L. Schulz, Peter A. Dowben

Peter Dowben Publications

The possible origins of a low density of defect states within the highest occupied molecular orbital to lowest unoccupied molecular orbital gap are suggested for regioregular poly(3- hexylthiophene). A number of chemical defects, impurities, and structural defects could contribute to features in photoemission for regioregular poly(3-hexylthiophene), observed within the highest occupied molecular orbital to lowest unoccupied molecular orbital gap of regioregular poly(3-hexylthiophene).

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Yearbooks As A Genre: A Case Study, Melissa Caudill Dec 2007

Yearbooks As A Genre: A Case Study, Melissa Caudill

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ABSTRACT
In the United States, high school and college yearbooks are extraordinarily well known as a genre, yet they are largely unstudied. Yearbooks preserve images, stories, and facts from each year for one specific group of people, linked by age and geographic community. Yearbook production is a significant commercial enterprise, yet it involves novice writers, editors, and designers. Blending elements of craft, tradition, business, and media, yearbooks as a distinctive genre bear closer rhetorical study and application of professional communication theories.
This historical case study of production practices for a particular college yearbook positions yearbooks rhetorically as texts and sites …

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Deafdigest: Blue Edition, December 9, 2007, Barry Strassler Dec 2007

Deafdigest: Blue Edition, December 9, 2007, Barry Strassler

DeafDigest Blue 2007

No abstract provided.

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Deafdigest: Deaf Sports News December 8, 2007, Barry Strassler Dec 2007

Deafdigest: Deaf Sports News December 8, 2007, Barry Strassler

DeafDigest Sports 2007

No abstract provided.

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12/08/2007 Obituary Records, Hawaii Obituaries Dec 2007

12/08/2007 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 12/08/2007. Scroll down to see the names and obituary description.

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12/08/2007 Obituary Records, Hawaii Obituaries Dec 2007

12/08/2007 Obituary Records, Hawaii Obituaries

Obituaries

List of Obituaries for individuals who passed away on 12/08/2007. Scroll down to see the names and obituary description.

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December 8, 2007 (Pages 6373-6502), Pennsylvania Legislative Reference Bureau Dec 2007

December 8, 2007 (Pages 6373-6502), Pennsylvania Legislative Reference Bureau

Volume 37 (2007)

No abstract provided.

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Iowa Physicians: Legitimacy, Institutions, And The Practice Of Medicine, Part Three: Dealing With Poverty And Defending Autonomy, 1929-1950, Susan C. Lawrence Dec 2007

Iowa Physicians: Legitimacy, Institutions, And The Practice Of Medicine, Part Three: Dealing With Poverty And Defending Autonomy, 1929-1950, Susan C. Lawrence

Department of History: Faculty Publications

This article, the last of this three-part series, briefly lays out some of the major changes in medical organization and institutions in Iowa between 1929 and 1950. The bulk of the essay then focuses on the effects that the rising costs of medical care had on ordinary Iowa physicians. Anxiety about the expense of medical services for the respectable working and middle classes joined worries about paying for the basic health needs of the indigent and marginally poor. In the 1910s and 1920s, more physicians and more patients expected hospital stays for surgery and childbirth, looked to laboratory-based tests for …

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Commencement Speech - Dec 2007, George C. Wright Dec 2007

Commencement Speech - Dec 2007, George C. Wright

President Emeritus George C. Wright Speeches

No abstract provided.

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The Murray Ledger And Times, December 8, 2007, The Murray Ledger And Times Dec 2007

The Murray Ledger And Times, December 8, 2007, The Murray Ledger And Times

The Murray Ledger & Times

No abstract provided.

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