Digital Commons Network^™

Application Of Systems Engineering Science To The Healthcare Environment, Jonathan Mack Phd, Msn, Anp, Rn

Dissertations

This Doctoral dissertation consists of a research portfolio examining the application of systems engineering techniques to the healthcare environment. The portfolio consists of three final publishable articles submitted to meet the program requirements for the, Doctor of Philosophy in Nursing degree from the University of San Diego, Hahn school of Nursing and Health Sciences. Article one is titled; "Use of a bed projection tool to predict ICU bed needs." This article describes the dissertation research study in which a bed projection tool was piloted on an ICU unit to determine the tool's ability to predict inpatient bed requirements. Article 2 …

Cooperative Learning: Attitudes, Perceptions, And Achievement In A Traditional, Online, And Hybrid Instructional Setting, Allison Hardin Duckworth

Dissertations

Cooperative learning has been sufficiently studied to be accepted as an effective method of education. Student reception of cooperative learning, and therefore the degree of its success in a given situation, will depend on the mode of delivery. New technology for delivering courses totally online challenges many aspects of traditional education, and is particularly difficult for cooperative learning that relies heavily on intense face-to-face communication among students. This study was conducted to compare cooperative learning in a traditional setting to that in hybrid and online settings. A model for delivering a cooperative learning experience has been developed utilizing concept maps …

Superintendent Perceptions Of The Accreditation Process In The State Of Mississippi, Betty Mae Merhundrew

Dissertations

The No Child Left Behind Act of 2001 provides guidelines that all public schools in the United States must follow. Provisions of this law require that specific assessments be given to all students in schools across the United States and that individual states establish one system of accountability for all schools. Although much is being done, public schools are still lacking in the area of accountability reform. Many states set their own achievement goals and standards for which schools within their states are measured and then held accountable for students’ performance. This study examined the perceptions of all Mississippi school …

A Critical Analysis Of The Implementation Of Depth Of Knowledge And Preliminary Findings Regarding Its Effectiveness In Language Arts Achievement, Carol Elizabeth Ferguson Viator

Dissertations

Mississippi implemented its new curriculum standards with depth of knowledge (DOK) goals in 2007, but successful educational reform requires effective professional development that prepares teachers to make the needed instructional changes. This study evaluated whether there were statistically significant relationships among professional development duration, frequency, type of training, utilization of training in instruction and assessment, and teachers’ perceptions of instructional and assessment implementation practices and language arts achievement for third, fourth, and fifth graders as measured by the MCT2 language arts assessment. The study also evaluated teacher perceptions of the implementation of depth of knowledge in instruction and assessment and …

Investigation Of Novel Quasiliving Polyisobutylene Chain-End Functionalization (Quenching) Methods, David Lee Morgan

Dissertations

This volume recounts efforts toward the development and understanding of chain functionalization techniques involving the direct addition of nucleophiles to quasiliving polyisobutylene (PIB). Nucleophiles included in the study were sterically hindered organic bases, (di)sulfides, N-substituted pyrroles, and alkoxybenzenes. A kinetic investigation of the end-quenching of TiCl4-catalyzed quasiliving PIB with sterically hindered amines was used to determine the mode of interaction with TiCl4 and the active species responsible for -proton abstraction. 2,5-disubstituted-N-hydropyrroles formed pyrrole-TiCl3 adducts that were active in formation of exo-olefin chain ends; whereas, with other sterically hindered amines, only an equilibrium fraction of the amine that did not complex …

Developing A Biosensor For The Detection Of Bacteria: A Comparison Of Methods For Isolating Bacteria-Specific Antibodies, Scott Allen Walper

Dissertations

The antigen-antibody interaction is known to be a high affinity and highly specific interaction that can readily be used for the detection and identification of biological and chemical agents. These studies were conducted to develop an efficient and cost-effective method of obtaining bacteria-specific antibody molecules for integration into a fielddeployable biosensor. Antigen-binding molecules were obtained both as full-length IgG molecules from a hybridoma cell line and as recombinant single-chain Fv (scFv) antibodies isolated from naïve and immunize libraries. Monoclonal and recombinant antibody systems were compared on the effectiveness of producing new, target-specific molecules; the efficiency of production and purification of …

High-Stakes Testing And Its Relationship To Stress Levels Of Secondary Teachers, Sonya Colman Christian

Dissertations

This study investigated the relationship between high-stakes testing and the stress levels of secondary teachers in Jackson’s Jackson Public School District. The independent variables of age, gender, subject taught, teaching experience, degree and school level were used to determine the differences of the various groups. A survey was piloted and used to determine teachers’ levels of stress. There was not a statistically significant difference between the stress levels of teachers who teach subjects that are measured by high-stakes testing and those who do not. There also was not a statistically significant difference between the stress levels of veteran teachers and …

The Relative Value Of Online Learning Environments As Perceived By High School Teachers, Daryl Joe Scoggin

Dissertations

Online learning environments have become more popular for use in education from year to year. This medium for teaching and learning has been successfully used in higher education for years. Only within the past decade has this instructional platform made its way into the P-12 arena. With the expansion of online learning environments becoming more popular, this type of lesson delivery may eventually make its way to the building or site level. As in a face-to-face classroom, teachers have an effect on the success of the students. The perceptions of teachers regarding dimensions of implementation and use of online learning …

On Robustification Of Some Procedures Used In Analysis Of Covariance, Kuanwong Watcharotone

Dissertations

This study discusses robust procedures for the analysis of covariance (ANCOVA) models. These methods are based on rank-based (R) fitting procedures, which are quite analogous to the traditional ANCOVA methods based on least squares fits. Our initial empirical results show that the validity of R procedures is similar to the least squares procedures. In terms of power, there is a small loss in efficiency to least squares methods when the random errors have a normal distribution but the rank-based procedures are much more powerful for the heavy-tailed error distributions in our study.

Rank-based analogs are also developed for pick-a-point, adjusted …

Option Pricing And Stable Trading Strategies In The Presence Of Information Asymmetry, Anirban Dutta

Dissertations

Pricing derivatives is one of the central issues in mathematical finance. The seminal work of Black, Scholes and Merton has been the cornerstone of option pricing since their introduction in 1973. Their work influenced the pricing theory of other derivatives as well.

This derivative pricing theory has two primary shortcomings. Firstly, the theoretical pricing in such theories are not accompanied by a stable trading strategy. Secondly, they often assume that the market agents use a uniform model for the underlying instrument and that the market prices of the derivatives reveal all the information about the underlying instrument.

Theoreticians like Grossman …

Designing Molecular And Nanoscale Materials For Environmental Chemistry Processes, Wen Guo

Dissertations

This dissertation focuses on fundamental studies to identify materials that detect and degrade common organic environmental pollutants. Chapter 1 represents the overview of two widespread ground water contaminants: organohalides and organophosphorous compounds. Due to continuous usage of these compounds as well as their toxicity, reliable and sensitive methods for their detection and degradation are urgently needed. In Chapter 2 a description of molecular sensors designed with high sensitivity and selectivity to detect and distinguish between three organophosphorus (OP) pesticides are described. These sensors provide dual optical and electrochemical signals for detection, which minimizes false-positives. The signal transduction occurs in real …

Modeling The Momentum And Mass Transfer Within A Micro-Scale Polymer Electrolyte Membrane Fuel Cell For Flows Within The Slip Flow Regime, Sean Tamarun Goudy

Dissertations

Polymer Electrolyte Membrane (PEM) fuel cell systems are heterogeneous catalytic systems. Although there are many computational models that describe the behavior of PEM fuel cells, few simulate the catalyst surface concentration of reactant gases at the catalyst layer-membrane layer inteface. Most PEM fuel cell models make no distinction between the bulk concentration of reactants and the catalyst surface concentration of reactants. It is the surface concentration that is key when studying PEM fuel cell systems: the reactions occur at the surface of the catalyst.

In addition, few model the dynamics within the non-continuum flow region near the solid surfaces of …

The Cognitive Load Impacts Of Assistive Technology Devices Used By Sighted Teachers In Training During Literary Braille Instruction, Charles Redden Farnsworth

Dissertations

The purpose of this study was to explore differences in perceived cognitive load experienced by sighted teachers-in-training using manual or electronic braille assistive technology devices to learn literary braille. Ninety-four participants from 18 personnel preparation programs across the United States and Canada participated in this study. Data were collected between August 2008 and June 2009 using the NASA-Task Load Index, the National Literary Braille Competency Test, and semi-structured interviews.

There were no statistically significant differences found between the technology groups in the quantitative measures of cognitive load or in literary braille proficiency according to the National Literary Braille Competency Test …

Parental Involvement And Expectations Of Children's Academic Achievement Goals In Botswana: Parent's Perceptions, Keinyatse Kgosidialwa

Dissertations

No abstract provided.

Factors That Promote Success In Large Enrollment General Chemistry Courses Taught With Clickers, James Richard Macarthur

Dissertations

No abstract provided.

Grade Point Average As A Predictor Of Timely Graduation From Associate Degree Registered Nursing Programs, Delores J. Jackson

Dissertations

The purpose of this study was to determine if admission selection strategies that utilize cumulative and/or pre-requisite GPA are predictive of timely graduation for associate degree nursing (RN-AD) students. Data were obtained from de-identified records of 437 associate degree nursing students enrolled in three Midwest community colleges from 2003-2006. Of the total sample, only 44% of the students graduated on time (i.e., in four semesters or two years). Although a statistically significant difference was found for timely graduation rates between colleges (ranging from 29% in College B to 54% in College A), no relationship was found for cumulative GPA, pre-requisite …

The Effects Of An Inquiry-Based Earth Science Course On The Spatial Thinking Of Pre-Service Elementary Teacher Education Students, Kevin Douglas Weakley

Dissertations

This study examined the effectiveness of two geography courses at improving student spatial thinking skills. Spatial thinking is an important cognitive skill in the sciences and everyday life. A taxonomy of spatial thinking was constructed by Gersmehl (2008) in geography education which included core modes assessed in this study: comparison, region, transition, analogy, pattern, and association. Two additional modes related to space over time, change and movement, were also assessed. The central research question in this study is: What are the effects of a pre-service teacher education earth science content course (Geography 1900) that is conceptually designed and inquirybased on …

A Decision Model For Nurse-To-Patient Assignment, Ilgin Acar

Dissertations

A critical consequence of the current nurse shortage in the US may be an increase in the workloads on hospital nurses. Heavy workloads have been identified as a major cause of job dissatisfaction among hospital nurses and may ultimately lead to a reduction in the quality of patient care. A focus on the balancing of the workload among scheduled nurses through patient assignments can help to alleviate the chance of assigning excessive workloads to one or more nurses during a shift. Nurse-to-patient assignment, the final stage of the nurse planning was the main intention of this study. It is reasonable …

Experimental Analysis Of Gambling Using A Concurrent-Schedules Procedure, Andrew Ellis Brandt

Dissertations

Gambling has been experimentally investigated using various types of gambling simulations designed to mimic the contingencies found in real-world games of chance. Findings from past risky choice research suggest that certain procedures used in existing gambling simulations may systematically increase levels of gambling. Two of these characteristics, the use of a participant stake and the type of options available during gambling, were tested in four experiments in which participants had the opportunity to gamble using tokens exchangeable for entries into a $50 lottery. Experiments 1 and 2 tested persistence on a gamble option when either a single-option or a concurrent …

Characterization Of The N-Terminal Domains And Disease-Causing Mutations Of The Human Wilson Protein, Joshua Mutambuki Muia

Dissertations

The Wilson protein (ATP7B) is a copper transporting ATPase that is involved in copper trafficking and homeostasis. Unlike the other known P-type ATPases, it possesses six homologous metal binding domains at the N-terminal end. Several mutations in the gene coding for this protein lead to Wilson disease, a hepatic disorder characterized by impaired excretion of copper in the bile, and accumulation of copper in body organs such as the liver, brain, kidney, and eye cornea. Characterization of various regions of expressed and purified ATP7B has been hampered by its low stability, aggregation and degradation.

In this research, novel methods were …

The Lipid Acyl-Chain Dynamics In Giant Liposomes And Characterization Of Domain 4 Of The Wilson Disease Protein, Wilson Okumu

Dissertations

Steady-state and nanosecond time-resolved fluorescence of the nitro-2, 1, 3- benzoxadiazol-4-yl (NBD) probe and line tension force were determined in phospholipids acyl-chain dynamics in giant liposomes made from a homologous series of phosphatidylcholines (PC). The fluorescence spectroscopy of a NBD probe attached to the headgroup (NBD PE) or the tail (NBD PC) of the phospholipid were used to determine the rate of dithionite quenching in a homologous series of phospholipids. Similar experiments were performed in the gel and the fluid phases of the l,2-dimyristoyl-s«-glycero-3-phosphocholine (DMPC ). Nanosecond time scale lifetimes and anisotropy measurements were obtained by a 470 nm LED …

Optimizing Green Sand Properties Of Fluidized Sand From Aeration And Developing New Green Sand Testing Technique, Ananda Mani Paudel

Dissertations

Aeration sand filling is a new molding technique in foundry. Using this technique, sand with smooth flow can be filled in any orientation and shape using low-pressure air. This is not possible by conventional gravity and high-pressure blow filling techniques. Aeration was introduced as an energy-efficient and environmentally- friendly sand molding technique. In addition, aeration has its niche on quality of molds it could produce. Friability, one of the crucial green properties for the quality mold was significantly low in aeration in comparison to the gravity and high-pressure blow filling. The fluidization action in aeration acted upon the sand clay …

The In-Situ Removal Of Menthofuran From Peppermint Oil And Subsequent Reactions Of The Solid-Supported Adduct, Robert Joseph Justice Ii

Dissertations

Menthofuran is an aromatic heterocyclic compound found naturally in the essential oil of Mentha piperita L. or peppermint. Natural peppermint oil may contain between approximately 2 to 8% menthofuran.

Peppermint oil is a complex mixture of over 350 identified chemical compounds; market demands dictate the extent of processing the oil undergoes prior to being introduced into consumer goods. Menthofuran has long been known to readily autoxidize, either alone or within the peppermint oil matrix, leading to a discolored oil with negative organoleptic consequences that adversely affects its commercial viability. Therefore, a facile method for selective removal of menthofuran was developed …

Investigating Efforts To Change Educator Attitudes And Teaching Strategies Through Professional Development Focused On The Use Of Backward Design Curriculum And The Principles Of Efficacy: Educator Beliefs And Attitudes, Alice Marie Jordan Aldridge

Dissertations

School districts continually face problems associated with student achievement. The 2001–2002 federal mandate contained in the No Child Left Behind (NCLB) Act held schools accountable for success of all students in reading and mathematics. Standardized tests were employed to measure the success. The purpose of this study was to investigate efforts to change educator attitudes and teaching strategies through professional development focused on the use of backward design curriculum and the principles of efficacy. Participants completed a pre and post Likert survey. Three 45-minute professional development sessions were conducted incorporating discussions on the principles of efficacy and backward design curriculum. …

Principal Leadership And School Effectiveness: Perspectives From Principals And Teachers, Robert Herrera

Dissertations

Principal leadership and its effect on student achievement have been well documented over the past two decades. However, the link between the principals' level of engagement in leadership practices and whether their schools met the accountability measure remains unexplored. The purpose of this study was to examine four research questions regarding (a) the extent of principals' engagement in seven leadership practices that are identified as enhancing student achievement in the literature, and (b) whether the level of engagement is associated with schools' success in meeting the accountability measure.

The study used data collected by the National Center for Education Statistics …

Self-Assembly And Gold Nanoparticle Cross-Linking Of Stimuliresponsive Block Copolymers Synthesized Bt Reversible Addition-Fragmentation Chain Transfer Polymerization, Adam Eugene Smith

Dissertations

The ability of amphiphilic block copolymers to self-assemble into various morphologies in aqueous solution in response to specific stimuli has attracted widespread interest for potential applications as targeted drug delivery and diagnostic vehicles. Stimuli-responsive block copolymers afford a facile method for tuning the hydrophilic mass fraction to provide access to various solution morphologies. Reversible additionfragmentation chain transfer (RAFT) polymerization provides the ability to prepare stimuli-responsive block copolymers while maintaining precise control over the macromolecular characteristics (molecular weight, copolymer composition, functionality, etc.) that dictate nanostructure morphology.

This work may be divided into four sections. In the first section the synthesis and …

Synthesis Of Functional Copolymers Via Aqueous Raft Polymerization For Bioconjugation And Targeted Delivery Of Small Interfering Rna, Adam Wesley York

Dissertations

The versatility of reversible addition-fragmentation chain transfer (RAFT) polymerization has moved this controlled radical technique to the forefront of copolymer construction for bioapplications including polymeric drug/gene delivery vehicles. Strengths of the RAFT process include the capacity to control the polymerization of a wide variety of vinyl monomers under mild conditions, its tolerance to numerous chemical groups that allow the preparation of functional copolymers for facile modification, and the range of copolymer architectures with predetermined end group functionalities which may be synthesized. Given these strengths, RAFT polymerization was utilized in this research to synthesize functional/reactive copolymers for bioconjugation and targeted delivery …

Professional Development In College Science Teaching, Aimee Kathryn Thomas

Dissertations

Graduate students earning a doctorate in the sciences historically focus their work on research and not professional development in college science teaching. However, for those who go on to a career in academia, a majority of their time will be dedicated to teaching. During the past few years, graduate teaching assistants (GTAs) have been prepared to teach by attending a daylong workshop that included logistical information, but left pedagogy largely unexplored. Since that time, a seminar has been added to provide an introduction to pedagogical theory and practices and to provide practice teaching in the biological sciences laboratory course. Yet, …

Assessing The Impact Of A Computer-Based College Algebra Course, Ningjun Ye

Dissertations

USM piloted the Math Zone in Spring 2007, a computer-based program in teaching MAT 101and MAT 099 in order to improve student performance. This research determined the effect of the re-design of MAT 101 on student achievements in comparison to a traditional approach to the same course. Meanwhile, the study investigated possible effects of the Math Zone program on students’ attitude toward studying mathematics.

This study shows that there was no statistically significant difference on MAT101 final exam scores between the Math Zone students and the Classroom students in Fall 2007, Spring 2008 and Fall 2008. At the same time, …

Preservice Teachers’ Attitudes, Familiarity, Use, And Perceived Applicability Of Content Area Reading Strategies, Bridgette Ladonna Davis

Dissertations

The influence of field based-experiences in K-12 classroom and grade level licensure area on preservice teachers’ attitudes, familiarity, use, and perceived applicability of content area reading instruction was examined for 597 participants from three state-supported universities in a southeastern state in the United States. These participants who were seeking either K-6 or 7-12 licensures represented three levels of field-based classroom experience: (a) no field-based experience, (b) some non-sustained field-based experience, and (c) a full-semester of field-based experience. Data were collected using a demographic questionnaire and two instruments, the Attitudes toward Content Area Reading (ATCAR) questionnaire and the Content Area Reading …