Digital Commons Network^™

Exploring The Relationship Between Myers-Briggs Type And Instructional Perspectives Among College Faculty Across Academic Units, Pamela Jean Moehl

Dissertations

Education has the opportunity to play an integral role in sustaining the health of our economy in an increasingly competitive, global market. A review of the issues and trends impacting higher education reveals growing pressure placed on faculty to advance instructional outcomes among more diverse populations. Imbedded is the challenge to create new knowledge about how to improve instruction. As diversity among college students in terms of age, gender, and ethnicity continues to increase, psychological type provides a means for examining important differences in choice of academic discipline(s), persistence, learning style, and teaching style preferences. Faculty members face increasing pressure …

Normative Comparative Analysis Of Missouri School District‘S Technology Plans Using Ict180 Evaluation Tool, Norris Lee Roberts Jr.

Dissertations

This research study explored written plans for effective technology integration. The research study included a normative and comparative analysis of school technology plans using a researcher-developed, evaluation tool named Information Communication Technology (ICT) ICT180. The sample of 30 included Missouri public school districts that had plans reviewed and approved by the Department of Elementary and Secondary Education (DESE) in June of 2009. ICT180 was an evaluation tool, which was used to critically review the objectives, strategies, and action steps in the school district technology plans. The tool provided an in-depth assessment of the five Technology Focus Areas of the Missouri …

A Retrospective Analysis Of Maternal And Child Outcomes Following An Obesity Intervention Program, Melinda S. Bender Phd

Dissertations

Background: One of the highest risk groups for childhood obesity and associated co-morbidities in the United States are low-income Hispanic preschool children. To reduce obesity, effective interventions are being sought to improve health behaviors among high risks groups. Objectives: To evaluate a subset of data from a larger 9-month promotora facilitated obesity intervention study. The aims were to determine: 1) pre- to post-program differences in health behaviors including: (a) children's consumption of high carbohydrate beverages (HCB); and (b) maternal walking, beliefs, knowledge, self-efficacy, and relationship building regarding nutrition and physical activity; and 2) which covariates were significant for change in …

Maternal Posttraumatic Stress Disorder, Parenting, Family Functioning, And Child Outcome, Desiree Alana Sutherland

Dissertations

Although a good deal of research has been conducted examining the effects of parental psychopathology of various types (i.e. maternal and paternal depression and schizophrenia, paternal PTSD), very few studies have investigated the influence of maternal PTSD on mothers’ parenting and their children’s behavioral and psychological functioning. This paucity of research is in spite of the fact that women exhibit higher lifetime PTSD prevalence rates than men. The current study examined the influence of maternal PTSD and trauma on mothers’ parenting, family functioning, and children’s psychological well-being in a sample of 125 mothers and 34 mother-child dyads. Mothers provided self-report …

Interoceptive Fear And Pain Anxiety In Non-Cardiac Chest Pain: Is Fear Associated With Reduced Physical Activity?, Jennifer Marie Craft

Dissertations

Non-cardiac chest pain (NCCP) describes angina-like pain suffered by patients who lack a cardiac diagnosis (Fleet & Beitman, 1997). Despite a benign diagnosis, some NCCP patients continue to experience persistent pain, cardiac worry, impaired quality of life (Eifert, Hodson, Tracey, Seville, & Gunawardane, 1996), elevated rates of psychiatric disorders (Bass & Wade, 1984; White, et al., 2008), and negative health consequences (Eslick & Talley, 2008). Consistent with theory, research indicates that NCCP patients differentially fear cardiac sensations (Aikens, Zvolensky, & Eifert, 2001; White, Craft, & Gervino, 2010). It may be that NCCP patients avoid physical activity, which elicits feared cardiorespiratory …

Development Of New Strategies For Expeditious Oligosaccharide Synthesis, Sophon Kaeothip

Dissertations

The important role that carbohydrates play in biology and medicine has been the major incentive for devising new methods for chemical and enzymatic glycosylation. The chemical approach to oligosaccharides involves multiple synthetic steps and the development of new strategies that allow for streamlining the synthesis of these complex biomolecules is a significant area of research. The aim of this doctoral dissertation is to develop new reagents and efficient methodologies for oligosaccharide synthesis. It was found that siver(I) tetrafluoroborate can be used as a powerful activator of various glycosyl donors for oligosaccharide synthesis. This study evolved into the development of a …

From The Border To The Boardroom: The Journey To The Community College Presidency For Mexican-American Women, Yesenia Noreeka Avalos

Dissertations

The purpose of this qualitative cross-case analysis study is to examine the professional pathways of female Mexican-American community college presidents. The Hispanic/Latino population has grown immensely in the United States since 2000. The demographic profile for community colleges has evolved to reflect the population changes within the country. Community colleges grew tremendously during the 1960s and 1970s and now thirty to forty years later these institutions are searching for new executive level leaders. Looking to the future, there is an opportunity for the face of community college leadership to change.

Similarly to other women, Latinas are moving into education leadership …

Effect Of Dry Particle Coating On The Properties Of Cohesive Pharmaceutical Powders, Lauren Elizabeth Beach

Dissertations

Engineered particles, which have undergone surface modification via dry coating, have been previously shown to have improved flow and handling properties. The improvements in these properties can be applied and are very useful for a number of industrial applications, in this case the pharmaceutical industry. This work investigates the effect of dry particle coating to improve the flowability of cohesive active pharmaceutical ingredient (API) powders and their blends. Improving the flow properties of cohesive API powders can significantly improve their handling and subsequent use for pharmaceutical processes such as formulation and manufacturing processing operations. Although it has been shown that …

A 3-Dimensional Vascularized Cardiac Tri-Culture Model Using Chitosan Nanofiber Scaffolds, Ali Hussain

Dissertations

The development of an in vitro tissue model that can mimic the 3-dimenisonal (3-D) cellular architecture and mosaic of myocardial tissue holds great value for cardiac tissue engineering, modeling, and cardiovascular drug screening applications. The main objective of this project was to develop a 3-D vascularized cardiac tissue model in vitro for improved survival and function.

The cellular mosaic of the myocardial tissue demands the intricate integration of an extracellular matrix-like scaffold, cellular constituents, and biological factors. The first aim of the research was to fabricate and characterize a biodegradable chitosan nanofiber scaffold that would resemble the extracellular matrix (ECM) …

Using Feed-Forward Networks To Infer The Activity Of Feedback Neuronal Networks, Xinxian Huang

Dissertations

The nervous system is one of the most important organ systems in a multicellular body. Animals, including human beings perceive, learn, think and deliver motion instructions through their nervous system. The basic structural units of the nervous system are individual neurons which constitute different neuronal networks with distinct functions. In each network, constituent neurons are coupled with different connection patterns, for example, some neurons send feed-forward information to the coupling neurons while others are mutually coupled. Because it is often difficult to analyze large interconnected feedback neuronal networks, it is important to derive techniques to reduce the complexity of the …

Enhanced Membrane Distillation : Analytical And Deionization Applications, Ken Gethard

Dissertations

Membrane distillation (MD) is a newer technology that is being investigated for applications such as seawater desalination and concentration of fruit and sucrose solutions. The major advantage of MD over traditional thermal distillation is that it requires a substantially lower thermal energy requirement to power the process. This allows low grade energy sources such as waste heat or solar energy to be used with MD. Compared to concentration processes such as reversed osmosis or ion-exchange, MD does not require specialized equipment, high electrical consumption, the use of strong acids and bases nor does it generate hazardous waste as a by-product. …

Anti-Solvent Precipitation And Subsequent Film Formation Of Hydrophobic Drugs For Drug Delivery, Xiangxin Meng

Dissertations

It is estimated that about forty percent of the drug molecules being developed by the pharmaceutical industry are hydrophobic in nature, leading to poor water solubility and bioavailability in the gastrointestinal tract. Dissolution is a limiting factor in their in vivo performance, and increasing their dissolution rate is a major challenge. It has been proven that the dissolution rate is directly proportional to the specific surface area, which can be effectively increased by reducing the particle size. Therefore, considerable efforts have gone into developing reliable and efficient methods for the manufacture of fine particles. Particle size reduction technologies such as …

Electrodeless Electro Hydrodynamic Printing Of Personalized Drug Dosages, Ezinwa Okeoma Elele

Dissertations

There is compelling evidence that variability in drug efficacy in individuals depends on their genetic fingerprints. These observations have given rise to the concept of personalized therapy whose ultimate goal is to develop medicinal agents designed for each niche of the population and individual patients according to their genetic background. The drawback in current pharmaceutical technologies is that most processes are designed to target large population and are unable to meet the demand of small-scale manufacturing of tailored therapeutics with diverse range of physical properties. One of the major challenges lie in developing efficient and cost effective methods of manufacturing …

Magnetic Seeding Aggregation To Enhance The Removal Efficiency Of Tio2 Nanoparticles From Water, Ashish Dhananjay Borgaonkar

Dissertations

Engineered nanoparticles, such as titanium dioxide (TiO₂), are important building blocks for the evolution of nanotechnology in industries and commercial products. Ever so increasing use of the engineered nanoparticles is bound to result in a substantial fraction of these nanoparticles ending up in wastewater; or surface water and groundwater, which are sources of intake for drinking water treatment. Removal of these engineered nanoparticles in wastewater and drinking water treatment processes is a very important step towards the protection of environmental and public health as well as protecting water treatment units from fouling and other issues.

Experimental studies showed …

Deagglomeration And Mixing Via The Rapid Expansion Of High Pressure And Supercritical Suspensions, Daniel To

Dissertations

Nano-materials are the focus of many research activities due to the desirable properties imparted from their small grain size and high interfacial surface area. However, these materials are highly cohesive powders in the dry state and typically form large agglomerates, leading to a diminished surface area or even grain growth, which minimizes the effectiveness of these nanomaterials. This dissertation addresses the issue of mixing nanopowders constituents by deagglomerating them and achieving simultaneous mixing so that even after inevitable reagglomeration, the effectiveness of large interfacial surface area may be preserved.

Nano-particle mixtures were prepared using the environmentally benign dry mixing methods …

Study Of The Heating And Ignition Of Metal Powder By Electrostatic Discharge, Ervin Beloni

Dissertations

The objective of this work was to understand the processes that lead to ESD stimulated ignition events in metal powders. Several metals were studied: Mg, Al, and Ti. A commercially available ESD test device was adapted for the present experiments. The ESD current and voltage were measured using inductance coils; the data were used to determine the electric circuit impedance, and energy transferred to the powder. A mode of the powder ignition (individual particles vs. dust cloud), ignition delays, burn times, and velocities of ignited and ejected particles were determined from optical measurements.

It was determined that the ESD energy …

A Study Of The New York / New Jersey Coastal Water : Bio-Optical Characteristics Of The Harbor Estuary And The Effects Of Heavy Metals On Brown Tide Alga Of The Bight, Bin Wang

Dissertations

The New York / New Jersey (NY/NJ) coastal area is one of the most productive regions around the world and a major natural and scenic resource for New York and New Jersey. As a result of excessive nutrient loading in the water, algal blooms have been observed since 1950’s. The NY/NJ coastal area includes the NY/NJ Bight and the NY/NJ Harbor Estuary, and in the former, brown tides (Aureococcus anophagefferens) were first observed in 1985 becoming a more serious water quality problem over the last 25 years. The influence of micronutrients, namely trace metals, on A. anophagefferens that are widespread …

High-Order Adaptive Methods For Computing Invariant Manifolds Of Maps, Jacek K. Wrobel

Dissertations

The author presents efficient and accurate numerical methods for computing invariant manifolds of maps which arise in the study of dynamical systems. In order to decrease the number of points needed to compute a given curve/surface, he proposes using higher-order interpolation/approximation techniques from geometric modeling. He uses B´ezier curves/triangles, fundamental objects in curve/surface design, to create adaptive methods. The methods are based on tolerance conditions derived from properties of B´ezier curves/triangles. The author develops and tests the methods for an ordinary parametric curve; then he adapts these methods to invariant manifolds of planar maps. Next, he develops and tests the …

Markovian And Stochastic Differential Equation Based Approaches To Computer Virus Propagation Dynamics And Some Models For Survival Distributions, Lianzhe Xu

Dissertations

This dissertation is divided in two Parts. The first Part explores probabilistic modeling of propagation of computer 'malware' (generally referred to as 'virus') across a network of computers, and investigates modeling improvements achieved by introducing a random latency period during which an infected computer in the network is unable to infect others. In the second Part, two approaches for modeling life distributions in univariate and bivariate setups are developed.

In Part I, homogeneous and non-homogeneous stochastic susceptible-exposed-infectious- recovered (SEIR) models are specifically explored for the propagation of computer virus over the Internet by borrowing ideas from mathematical epidemiology. Large computer …

Asymptotic And Numerical Analysis Of Time-Dependent Wave Propagation In Dispersive Dielectric Media That Exhibit Fractional Relaxation, Matthew Frank Causley

Dissertations

This dissertation addresses electromagnetic pulse propagation through anomalously dispersive dielectric media. The Havriliak-Negami (H-N) and Cole-Cole (C-C) models capture the non-exponential nature of such dielectric relaxation phenomena, which is manifest in a variety of dispersive dielectric media. In the C-C model, the dielectric polarization is coupled to the time-dependent Maxwell's equations by a fractional differential equation involving the electric field. In the H-N case, a more general pseudo-fractional differential operator describes the polarization.

The development and analysis of a robust method for implementing such models is presented, with an emphasis on algorithmic efficiency. Separate numerical schemes are presented for C-C …

Transcriptional Regulation Of Nitrogenase And Identification Of A Fructose Transport System In Anabaena Variabilis, Justin Lynn Ungerer

Dissertations

Little is known about the regulation of nitrogenase genes in cyanobacteria. Transcription of the nifH1 and vnfH genes, encoding dinitrogenase reductases for the heterocyst-specific Mo-nitrogenase and the alternative V-nitrogenase, respectively, was studied using a lacZ reporter. Two promoters were found to be responsible for expression of nifHDK; a weak promoter within nifU1 and a strong promoter upstream of nifB (the nifB1 promoter). The region immediately upstream of vnfH did not drive expression of lacZ, however the region that included the promoter for the upstream gene, ava4055 did. Characterization of the previously reported nifH1 and vnfH transcriptional start sites by 5' …

Cord Blood Collection In Pregnant Women For Stem Cell Research, Irene Carr Phd

Dissertations

Umbilical cord blood (UCB) stem cells form commonly banked types of human tissue. Confusion remains about sources of stem cells and their use. Birth is a once in a lifetime opportunity with 74 million births per year in the world and four million occur in the United States. Cord blood contains hematopoietic stem cells and pluripotent mesenchymal cells (Moise, 2005). There is a surge of interest in the clinical use and research investigation of umbilical cord blood for transplantation and regenerative medicine. Clinicians need increased awareness and education of options for private versus public donation and banking of cord blood …

Phylogenetics And Diversification Of Escallonia (Escalloniaceae), Felipe Zapata

Dissertations

Despite a large accumulation of evidence on the high richness of plant species in the mountains of South America, little is known about the historical underpinnings of this diversity. To contribute to our understanding of the origin and diversification of plant species in these mountains, I analyzed geographic patterns of variation in molecular and phenotypic characters for the genus Escallonia L.f. (Escalloniaceae), a group of shrubs widespread in montane habitats in South America. Molecular phylogenetic analyses using chloroplast and nuclear loci revealed i) that Escallonia is monophyletic, ii) a remarkable level of geographical phylogenetic structure, and iii) a widespread absence …

Pre-Kindergarten And Kindergarten Teachers' Perceptions Of Kindergarten Readiness, Joshua Aaron Bressler

Dissertations

The purpose of this study was to determine if there was a difference in perception between pre-kindergarten and kindergarten teachers on kindergarten readiness. In addition, this study sought to find out if there was any difference in PEAK assessment scores between those students who attended pre-kindergarten versus those students who did not attend pre-kindergarten.

The instruments used for this research were the Pascagoula Early Assessment for Kindergarten (PEAK) scores and the Kindergarten Readiness Questionnaire. The PEAK scores measured students‟ readiness by assessing their knowledge on language, writing communication, math, and fine motor development from the onset upon entering kindergarten. The …

An Analysis Of Peer Leadership Competencies And Skills, John P. Baker

Dissertations

A significant leadership challenge exists while leading others without legitimate or formal authority. Leading without legitimate authority may require different and limited leadership skills and competencies, especially when leading peers. This quantitative study analyzed the leader competencies and skills needed for effective peer leadership.
A literature review identified four competencies cited frequently as important: (a) communication; (b) support; (c) mental/hard work ethic; and (d) reflection/feedback. Analysis of an ROTC leadership assessment database provided convergent validity for the literature review while adding one additional competency, physical. The lack of existing instruments measuring peer leadership competencies and skills necessitated the development of …

The Merit Of Merit Pay, Melissa May Pemberton Albright

Dissertations

The purpose of this study was to examine the perceptions of Missouri educators and state education leaders toward merit pay. In addition, a secondary purpose of this study was to examine the perceptions of educators on the impact of merit pay on recruiting and retaining highly-qualified teachers. Due to the current economic situation, districts are looking at ways to compensate teachers while recruiting and retaining highly-qualified teachers. Districts must continue to meet federal and state mandates to increase student achievement, and researchers have identified teacher quality as one such influence. Therefore, many believe the traditional salary schedule, which has been …

Running In Absentia, Jeffrey David Tucker

Dissertations

Running in Absentia is a collection of short fiction, short-short fiction (also known as flash fiction), and poetry, with a critical introduction.

An Empirical Comparison Of Four Data Generating Procedures In Parametric And Nonparametric Anova, Anquan Zhang

Dissertations

The purpose of this dissertation was to empirically investigate the Type I error and power rates of four data transformations that produce a variety of non-normal distributions. Specifically, the transformations investigated were (a) the g-and-h, (b) the generalized lambda distribution (GLD), (c) the power method, and (d) the Burr families of distributions in the context of between-subjects and within-subjects analysis of variance (ANOVA). The traditional parametric F tests and their nonparametric counterparts, the Kruskal-Wallis (KW) and Friedman (FR) tests, were selected to be used in this investigation. The four data transformations produce non-normal distributions that have either valid or invalid …

Emergence Delirium In U.S. Military Combat Veterans, Jason M. Mcguire Phd, Crna

Dissertations

This dissertation study examined the phenomenon of emergence delirium in U.S. military combat veterans. Emergence delirium is a post-anesthetic phenomenon that occurs immediately following emergence from general anesthesia and is characterized by agitation, confusion, and violent physical and/or verbal behavior. Clinical evidence suggests that emergence delirium is occurring with greater frequency among military personnel returning from conflict in the Middle East. This body of work is a culmination of three distinctive phases and is presented in three individual manuscripts. The first manuscript, "Risk Factors for Emergence Delirium in U.S. Military Members," was published in the Journal of PeriAnesthesia Nursing with …

Mother-Son Connectedness, Substance Use, And Young Men's Criminal Justice System Involvement, Kim L. Moreno Phd

Dissertations

The relationship between a mother and her son and its influence on health and risk behaviors as a boy becomes a man has had little exploration. The purpose of this study was to examine the relationships between mother-son connectedness, substance use, serious delinquency, violent delinquency, and criminal justice system involvement in young men. This study uses data from The National Longitudinal Study of Adolescent Health (ADD Health), a school-based study of students in grades 7–12 in the United States. Multiple regression, ANOVA, and logistic regression were used to analyze independent and dependent variables. Results show a perception of connectedness, which …