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The Impact Of Abiotic And Biogenic Mn Oxide Coatings On Contaminant Mobility, Bioavailability, And Attenuation, Thipnakarin Boonfueng

Dissertations

Abiotic and biogenic manganese oxide coatings significantly impact the mobility and bioavailability of metals in soils and sediments. While sorption to discrete Mn oxides has been investigated in a number of studies, coatings have not received as much attention. Abiotic nanocrystalline (hydrous manganese oxide (HMO)) and crystalline Mn oxides (bimessite and pyrolusite) coated on montmorillonite were studied for formation, structure, stability, and surface properties. Coatings dominated the clay surface characteristics where the surface charge behaved similar to that of the discrete oxide and the local structure was consistent with the pure oxide phase. Furthermore, in sorption studies, Zn and Pb …

Selected Problems Of Inference On Branching Processes And Poisson Shock Model, Satrajit Roychoudhury

Dissertations

This dissertation explores the development of statistical methodology for some problems of branching processes and poisson shock model.

Branching process methods have become extremely popular in recent days. This dissertation mainly explores two fundamental inference problems of Galton-Watson processes. The first problem is concerned with statistical inference regarding the nature of the process. Two methodologies have been developed to develop a statistical test for the null hypothesis that the process is supercritical versus an alternative hypothesis that the process is non-supercritical. Another problem we investigate involves the estimation of the 'age' of a Galton-Watson Process. Three different methods are discussed …

Rain Town, Melanie Crow

Dissertations

My project, a collection of poetry, examines both loss and transformation. Personal loss informs the poems, but the work also addresses how the speaker is accorded insight into the world because of loss and is transformed. The work takes into account mythology, science, and the act of writing in order to understand what it means to live in mutability. Many of the poems demonstrate an acute awareness of the body. Robert Lowell and Jorie Graham are both writers who have informed my poems in this way; both explore a dual consciousness of loss and renewal and both represent moments of …

Effects Of Anxiety Induction On Facial Recognition Skills Within A Sample Of Adult Victims Of Childhood Abuse, Kathryn M. Bell

Dissertations

Although it is well established that interpersonal victimization can lead to affect regulation problems, less is known about the extent to which childhood victimization impairs facial recognition skills. Most studies exploring this relationship have focused on emotion recognition (ER) in physically abused and neglected children. The degree to which these ER problems apply to sexual victimization and extend into adulthood is yet unknown. The current study examined the impact of physical and sexual childhood abuse on adult ER skills under a heightened arousal condition in 104 women with varying childhood victimization experiences. The relationship between childhood victimization and ER skills …

Characterization Of Membrane Potentials In Vascular Smooth Muscle Of Hagfish, Lamprey And Trout, Prentiss Jones Jr.

Dissertations

The objective of this study was to characterize membrane potentials in systemic arteries of Pacific hagfish, Eptatretus stouti, Rainbow trout, Onchorhyncus mykiss, and Sea lamprey Petromyzon marinus. Previous studies have characterized membrane potentials in piscine tissue. However, these studies utilized non-vascular tissues such as cardiac muscle and skeletal muscle (69, 161). Characterization of membrane potentials in fish vasculature is without precedent in the literature. The hypothesis of this study was that membrane potentials in fish vascular smooth muscle differ little between species when comparable vasculature is evaluated.

An Evaluation Of Intraverbal Training And Listener Training For Teaching Categorization Skills, Anna Ingeborg Petursdottir

Dissertations

Behavioral language interventions, such as those employed in early and intensive behavioral intervention (EIBI) programs, target both expressive and receptive language skills. Skinner's (1957) analysis of verbal behavior provides a framework for analyzing expressive and receptive language in terms of stimulus control and reinforcement history. From this perspective, different expressive language programs target different verbal operants, such as tacts, intraverbals, and echoics , whereas most receptive language programs target a type of listener behavior that may be referred to as manded stimulus selection (Michael, 1995). Although EIBI curricula (e.g., Maurice, Green, & Luce, 1996; Leaf & McEachin, 1999) have frequently …

Audio Narration And Reading Ability In Programmed Instruction, Wendy Jaehnig

Dissertations

This study compared the effects of audio, textual, and audio-textual narration in a programmed instructional module on the performance of individuals with different reading abilities. One hundred eighty-four college students were randomly assigned to audio, textual, or audio-narration. Dependent variables were posttest score and instruction completion time. An ANCOVA was used to analyze the results, with ACT reading test scores as the covariate. No differences were found between the groups on posttest scores (p = .56) or completion time (p = .90), and there was no interaction between narration type and reading score for either dependent variable. Audio …

Exposure Of Nervous System Cells To Polychlorinated Biphenyls (Pcbs), Results In Alterations Of Neurotrophic Factor Expression, Gordon H. Gurley

Dissertations

Toxic insult by PCBs results in learning and memory deficits in humans. Alterations in expression of neurotrophic factors (NF) and/or their receptors have been linked to changes in learning and memory. How PCBs affect cognition is not known. We suggest that PCBs affect cognition by altering NF expression.

We exposed cultured C6 rat glioblastoma cells (an astrocyte cell-line) to medium containing PCB (Aroclor 1254 (10ppm)). Control cells were treated with dimethyl sulfoxide (DMSO) or regular medium. Enzyme-linked immunosorbent assays (ELISA) were used to determine glial cell-line derived neurotrophic factor(GDNF) and nerve growth factor (NGF) concentrations in all samples. We also …

Molecular Analysis Of The Effects Of Atrazine On Xenopus Laevis Frogs, Ronald Edward Celestine

Dissertations

Atrazine, the most commonly used herbicide in the U.S., has been implicated as one of the factors that may be causing the worldwide decline of amphibians. First, I examined effects of atrazine on laboratory raised Xenopus laevis tadpoles, treated from 5 days post fertilization to NF stage 65/66 with a concentrationof 25 ppb of atrazine. This study showed no significant difference in body weight, length and metamorphic rate.

Second, I used DNA microarrays to examine mRNA expression levels of genes in atrazine treated and control Xenopus laevis tadpoles. I found significant changes in gene expression levels of 18 genes. These …

Ink Jet Inks And Substrates - Novel Approaches For Their Physical And Optical Properties Characterization, Veronika Lovell

Dissertations

Undoubtedly, within the last couple of decades, the progress in non impact printing technologies has grown to an enormous level. In order to keep the development of this non impact printing method to grow even more, technicians, researchers and educators must continue in conducting investigation and provoking new ideas and questions that will lead to new outcomes and expansion of ink jet printing.

In this work, a broader area that comprises deep look into the ink jet ink and substrate performance, their physical properties and optical properties when printed is discussed in great details. Innovative techniques, novel materials and novel …

Enhancing Web Marketing By Using Ontology, Xuan Zhou

Dissertations

The existence of the Web has a major impact on people's life styles. Online shopping, online banking, email, instant messenger services, search engines and bulletin boards have gradually become parts of our daily life. All kinds of information can be found on the Web. Web marketing is one of the ways to make use of online information. By extracting demographic information and interest information from the Web, marketing knowledge can be augmented by applying data mining algorithms. Therefore, this knowledge which connects customers to products can be used for marketing purposes and for targeting existing and potential customers. The Web …

Female Hormonal Influences On Stress- And Drug-Induced Reinstatement Of Extinguished Amphetamine-Induced Conditioned Place Preference, Melissa Elaine Bleile

Dissertations

One Animal paradigm used to study addiction is conditioned place preference. CPP is achieved when an animal develops a preference for environmental stimuli previously paired with subjective effects of a rewarding drug. Women may experience greater drug sensitivity than men, most likely due to estrogen levels. The purpose of this experiment was to assess the effects of female sex hormones on drug sensitivity and their interaction with the primary factors causing relapse, stress or drug re-exposure. Female rats were ovariectomized and received replacement hormones to control circulating hormone levels. These groups of animals were tested for amphetamine (AMPH)-induced CPP and …

Evolutionary Epidemiology Of Endemic Gal¿Pagos Birds And Their Parasites, Noah Kerness Whiteman

Dissertations

In order to better understand parasite diversification, I went to the Gal¿pagos Islands to study the ecology and evolution of a model bird-parasite system, which included four phylogenetically independent ectoparasite lineages infecting the Gal¿pagos Hawk (Aves: Buteo galapagoensis). The parasites comprised two lice (Insecta: Phthiraptera: Amblycera, Ischnocera), a lousefly (Diptera: Hippoboscidae) and an avian skin mite (Acari: Epidermoptidae). Ultimately, my goal was to examine ectoparasite evolutionary epidemiology and disease susceptibility in relation to the host¿s ecological and colonization history. At the outset, I hypothesized that parasite natural history was key in influencing the coalescent process. Accordingly, I found differences …

School Web Sites And Teacher Employment Interest, David Theodore Freeman

Dissertations

The Internet has changed the way many organizations, including public and private schools, recruit and select employees. It has also changed the way many people research and pursue employment opportunities, including those seeking positions in education. The school Web site is often the medium of first contact between a school or school district and a potential employee. That first contact can influence the potential employee’s decision to actively pursue employment with a school or a school district.

This research measured the reactions o f preservice teachers who visited three grade-level appropriate school Web sites of “poor,” “average,” and “best” distinction. …

Hatchery Of Tongues, Michael Wallace Bassett

Dissertations

Hatchery of Tongues is a collection of poems accompanied by a critical introduction.

Considering The Rationality Of African Ritual Behavior, Joel Grant Mort

Dissertations

The traditional social scientific method undervalues the role that cognitive processes play in human behavior and instead focuses on posited external causal forces, the most common of which is 'culture.' Normative models of rationality, on the other hand, often do suggest and emphasize cognitive reasoning strategies. What is lacking is a familiarity and understanding of what human beings actually do which is, ironically, something social scientists do know something about. Both assume a sort of rational normative baseline cognitive structure and then try to discover those circumstances in which this structure is compromised by the culture, the environment, learning, and …

Synthetic Studies Of 1,10-Phenanthroline Derivatives As Novel Catalysis Ligands And Their Application In Transition Metals Catalyzed Reactions, Son Duc Tran

Dissertations

The preparation of 1,10-phenanthroline derivatives entailed ring opening reactions of 1,10-phenanthroline epoxide as a key transformation, affording novelbidentate nitrogen ligands with new stereogenic centers in the 5- and 6-position. This research was concerned with (i) the epoxidation of 1,10-phen, (ii) epoxide ring opening reactions, (iii) the formation of trans -5,6-disubstituted-1,10-phenanthroline metal complexes, and (iv) application of 1,10-phenanthroline derivatives in metal-catalyze reactions such as palladium-catalyzed allylic substitution and aminohalogenation reactions; Zinc-catalyzed direct aldolreaction, and acetophenone reduction; Nickel-catalyzed Michael addition reaction.

Olfactory Bulb Neurons Of Adult Zebrafish Morphology, Distribution, Cellular Interactions And Structural Stability Following Deafferentation, Cynthia L. Fuller

Dissertations

The zebrafish is becoming an increasingly popular model for studies involving olfactory function, yet there is still much to be learned about the anatomy and circuitry of different cell types in the olfactory bulb. This study focuses on identifying the morphology and distribution of output neurons and interneurons in the olfactory bulb of adult zebrafish, Danio rerio . Furthermore, this investigation examines the cellular interactions of the primary output neuron, the mitral cell, and addresses the issue of neuronal plasticity by considering the structural stability of this cell type following loss of afferent innervation.

Using retrograde tract tracing with various …

New Estimators Of A Circular Median, Sauwanit Ratanaruamkarn

Dissertations

The specific properties of probability distributions on a circle require different definitions of several statistical concepts. For example, a median that can always be found for linear data not always exists on the circle. Several estimators of a circular median were proposed, lately by Otieno (2002), Otieno and Anderson - Cook (2003). Their work is, however, focused on the "preferred direction" which coincides with the median, mean and mode in the case of symmetric, unimodal distributions. This dissertation is focused on the estimators of a population median in a wider range of population distributions on a circle including distributions with …

Localization In Wireless Sensor Networks, Mark Terwilliger

Dissertations

With the proliferation of wireless sensor networks, providing location-aware technology and services to new applications have become important for developers. Localization is the problem of determining the positions of nodes in an ad hoc network. With the constrained resources of network sensors, providing robust localization services remains a fundamental research challenge facing the entire sensor network development community.

The initial localization problem that we addressed was to design and develop a working system that could locate equipment, such as a laptop or video projector. Ferret, the localization system developed, uses two different ranging techniques to help locate an object to …

An Examination Of The Job Satisfaction Of Mid-Level Managers In Student Affairs Administration, Jessie L. Grant

Dissertations

This study examined the job satisfaction, dissatisfaction, and attrition (intent to leave their position within the next twelve months) of mid-level managers in student affairs administration using Herzberg's (1966) Motivation-Hygiene Theory.

A purposive sample of 1943 mid-level managers from the American College Personnel Association (ACPA) was sent an invitation to take a Web-based survey. Four hundred seventy seven responses were received. Statistics were calculated for the demographic variables of age, education, gender, ethnic background, degree level and currently pursuing a degree, functional area(s) of the mid-level manager, supervision, Carnegie classification, student enrollment, institutional type, and career tenure in the student …

Comparative Genomic Analyses And Expression Of A Set Of Overlapping Open Reading Frames Of Frog Virus 3, Type Species Of Ranavirus (Family Iridoviridae), Wendy Guat Hoon Tan

Dissertations

Frog virus 3 (FV3) is the type species member of the genus Ranavirus (family Iridoviridae ). To better understand the molecular mechanisms involved in the replication of FV3, including transcription of its highly methylated DNA genome, the complete nucleotide sequence of the FV3 genome has been determined. The FV3 genome is 105, 903 base pairs long excluding the terminal redundancy. The G+C content of FV3 genome is 55% and it encodes 98 non-overlappingpotential open reading frames (ORFs) containing 50 to 1293 amino acids. Eighty-four ORFs have significant homology to known proteins of other iridoviruses, whereas 14 are unique FV3 ORFs. …

The Effects Of Aging On Cardiac Mechanics, Samuel C. Lieber

Dissertations

It is well established that the aging heart exhibits left ventricular (LV) diastolic dysfunction and changes in mechanical properties, which have been attributed to alterations in the extracellular matrix (ECM). The investigators tested the hypothesis that the mechanical properties of cardiac myocytes significantly change with aging thereby contributing to the LV diastolic dysfunction. Cellular mechanical properties were determined by indenting cells with an atomic force microscope (AFM). The indentation results were interpreted by modeling the AFM probe as a blunted cone and determining an apparent elastic modulus (B) with classical infinitesimal strain theory (CIST). A commercially available finite element software …

Environmental Justice Education And Atmospheric Particulate Analysis In Urban Environmental Health Policy Development : Indoor Airborne Particulate Concentrations In Preschools Of Asthmatic Children In Newark, Rita L. Thornton

Dissertations

Analysis suggests that several residential areas in Newark, New Jersey (USA) have Black/African-American and Hispanic populations, which may be "at high risk" with respect to the adverse health effects of particulate air pollution. This study analyzes the community locations and evaluates literature and other available air pollution data for the target communities in the city of Newark. The study focuses on asthma or reactive airway diseases as a target health risk. It also performs data collection on particulate pollutants and levels of trace metals in particulate matter in target communities and schools of preschool children in two of the five …

Truth And Terror: A Text-Oriented Analysis Of Daniel 8:9-14, Martin T. Pröbstle

Dissertations

Daniel 8:9-14 constitutes the climax of the vision report in Dan 8, and is arguably one of the most difficult Danielic passages. This dissertation investigates the Masoretic Text of Dan 8:9-14 by means of a detailed and comprehensive text-oriented analysis that utilizes linguistic, literary, and intertextual procedures.

In chapter 1, an overview of modern text-oriented approaches and the review of recent literature on Dan 8 pave the way for a description of this study's methodology, which consists of a combination of linguistic (syntax, semantics, and text-grammar), literary (style and structure), and intertextual approaches (textual relations within the book of Daniel), …

A Comparative Investigation Of The Concept Of Nature In The Writings Of Henry M. Morris And Bernard L. Ramm, Andrew M. Mutero

Dissertations

The study examines two major contrasting theological accounts of nature within the contemporary North American Evangelical community as articulated by Henry Morris and Bernard Ramm. In doing so, the dissertation analyzes nature considered diachronically in three epochs namely: (1) Natura Originalis (the origin of nature); (2) Natura Continua (the contemporary status of nature); and (3) Natura Nova (the future of nature).

The purpose of this research is to discover, describe, analyze, and compare the shape of the two contrasting concepts of nature articulated respectively by Morris, a strict concordist and a special creationist and Ramm, a broad concordist and a …

Academic Performance And Engagement Of Educational Opportunity Program Students In A College Algebra Extended Class At The State University Of New York, New Platz, Courtney Anthony Pindling

Dissertations

Problem

The purpose of this study was to describe the academic performance of a group of Educational Opportunity Program (EOP) students in a College Algebra Extended Program (CAEP) at the University of New York, New Paltz. Generally, EOP students are admitted with low mathematics placement scores. In the past, they would have been required to do remedial math. However, since college remedial math is no longer available, the CAEP was implemented to remedy this problem. This study was conducted to examine how a small group of EOP students performed in this course.

Method

A descriptive research design was used to …

Moral Implications Of Darwinian Evolution For Human Reference Based In Christian Ethics: A Critical Analysis And Response To The "Moral Individualism" Of James Rachels, Stephen Bauer

Dissertations

The topic. This dissertation explores and analyzes James Rachels's efforts to prove that Darwin's theory of evolution has catastrophic implications for traditional Christian ethics.

The purpose. The purpose of this dissertation is to explore and evaluate the question of whether or not protology affects ethics. In particular, I propose to distill the implications of evolutionary views of origins for ethics, mainly in reference to the issue of human preference over nature in ethics. I propose to disclose Rachels's understanding of the implications of evolution on human preference (greater protections for human beings over non-humans) in ethics (such as biblical-Christian ethics), …

Ranging Patterns And Habitat Utilization Of Northern River Otters, Lontra Canadensis, In Missouri: Implications For The Conservation Of A Reintroduced Species, Deborah Dorothy Boege-Tobin

Dissertations

I studied the spacing patterns and habitat utilization by reintroduced northern river otters, Lontra canadensis, at two sites in Missouri because previous studies of otters indicate, plasticity of a species social structure will likely be due to the tactics employed in acquiring resources in any given area. Seven hypotheses were tested by employing radio-tracking, habitat assessment and geographic information system approaches: (1) home range (HR) and core area (CA) size differ by sex; (2) HR and CA size differ in breeding vs. non-breeding seasons; (3) percent range overlap differs by sex; (4) habitat utilization, as indicated by latrine use, …

A Study Of How Precursor Key Concepts For Organic Chemistry Success Are Understood By General Chemistry Students, Patrick Gerard Meyer

Dissertations

This study examines college student understanding of key concepts that will support future organic chemistry success as determined by university instructors. During four one-hour individual interviews the sixteen subjects attempted to solve general chemistry problems. A think-aloud protocol was used along with a whiteboard where the students could draw and illustrate their ideas. The protocols for the interviews were adapted from the Covalent Structure and Bonding two-tiered multiple choice diagnostic instrument (Peterson, Treagust, & Garnett, 1989) and augmented by the Geometry and Polarity of Moleculessingle-tiered multiple choice instrument (Furió & Calatayud, 1996). The interviews were videotaped, transcribed, and coded …