Digital Commons Network^™

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 …

High-Throughput Screening Studies Of Inhibition Of Human Carbonic Anhydrase Ii And Bacterial Flagella Antimicrobial Activity, Albert A. Barrese Iii

Dissertations

Complete abstract attached as supplemental file.

What Role For Ethnicity? Political Behavior And Mobilization In Post-Conflict Sierra Leone And Liberia, Fodei Joseph Batty

Dissertations

This dissertation examines political behavior in Sierra Leone and Liberia following the end of their civil wars. Dominant theories on politics in African societies suggest that ethnic interests underpin political behavior and elections are mere censuses of ethnic support for co-ethnic party elites. Yet, while using a proportional representation electoral system that is expected to result in splintered vote shares for multiple political parties, Sierra Leone's elections in 2002 concentrated votes around one presidential candidate and political party. Conversely Liberia's elections in 2005, held using a first-past-the-post electoral system that expectedly discourages multiple vote shares, diffused votes among several political …

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 …

Design Of Adaptive Collective Foraging In Swarm Robotic Systems, Hanyi Dai

Dissertations

Inspired by the collective behavior observed in biological colonies, swarm robotics is a new approach to design a distributed control algorithm in order to coordinate a group of simple robots performing a complex group task. With only limited computation and communication ability of individual robots, one of the challenges in designing such multi-robotic systems is to understand the effect of individual robots behavior on the group performance. This thesis dedicates the research to designing a set of local interaction and adaptation rule for individual robots so that optimized collective foraging performance can be achieved at group level.

The research starts …

Essays On Export Destination Decisions And Spillovers From Inward Fdi: Evidence From Chilean Manufacturing Plants, Ivan A. Duran Diaz

Dissertations

This dissertation examines the relationship between destination country characteristics and Chilean firm characteristics on the export destination decisions of Chilean firms. Additionally, it explores the impact generated by inward foreign direct investment (FDI) on Chilean firms' export decisions, wages, and productivity.

For the first study, a random coefficients logit approach is employed to model export likelihood to a particular destination country. From this, estimates of export substitution elasticities among destination countries are obtained, given changes in some of their macroeconomic variables such as GDP. Both destination country and the Chilean firms' characteristics are shown to be relevant in the export …

The Allopolyploid Origin And Population Genetics Of The Rare Solidago Houghtonii (Asteraceae), Pamela J. Laureto

Dissertations

Solidago houghtonii is a federally threatened hexaploid plant species of likely hybrid origin, limited geographic distribution, and high habitat specificity. An understanding of the evolutionary history and population genetic structure of rare species is critical to ensuring their long-term survival. To study the hybrid origin of S. houghtonii I sequenced four noncoding chloroplast (cp) DNA loci, and the nuclear ribosomal DNA ITS and 3' ETS regions from four individuals of S. houghtonii, which span its geographic range, and 25 other species of Solidago including all sympatric species. Polymorphisms within the nrDNA sequences indicated the presence of multiple homeologue types …

Optimum Failure Truncated Testing Strategies, Erik Kostandyan

Dissertations

Accumulated fatigue damage on mechanical components due to random stress loads eventually causes failure. Therefore products with lower failure rates are more desirable. Testing mechanical components for their intended purpose under predetermined working conditions is a common practice used by industries to prevent failures. Fatigue tests are categorized as Time Truncated or Failure Truncated, known in the literature as Type I and Type II tests, respectively. In failure truncated tests, the mechanical components are tested until the desired number of results is obtained. The parameters of a typical failure truncated test include the capacity of the test facility, the actual …

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. …

Job Satisfaction Of University Chief Student Conduct Administrators And Their Intent To Stay Or Leave The Position, Suzie Nagel-Bennett

Dissertations

Chief student conduct administrators within higher education are responsible for administering and enforcing standards of student conduct, and navigating the vast legal, political and developmental components to fortify the ethical climate and academic integrity of institutions. Although some previous research regarding these individuals and their role does exist, no research to date could be found regarding their job satisfaction at four year public institutions in the United States. This study serves as the first research to examine overall job satisfaction, the level of satisfaction on stated intrinsic and extrinsic variables within the framework of Herzberg's (1966) dual-factor theory, and the …

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 …

Exploring A High School Community Relations And Parent Involvement Program, Robert Corey Sink

Dissertations

There are few issues in education that get as much attention as the need for improvement of parental and community involvement in and support for local schools. School faculties want to know how to improve the way they work with families and community members to better meet the needs of their students and parents want to find how to best communicate with the schools to help their children succeed. Even though there is extensive research and agreement about the importance of this topic, many schools continue to labor with these partnerships. This exploratory correlational research study employed a pre-test/post-test and …

Examining The Relationship Between Standard Tests, Experiential Learning Strategies, Student-Centered Teaching Attitudes, And Student Achievement In Communication Arts, Joann Clay

Dissertations

The purpose of this collaborative research study was to examine the relationship between standard tests, experiential learning strategies, student-centered teaching attitudes, and student achievement in Communication Arts. Each researcher took primary responsibility for the quantitative data (survey responses based on a Likert Scale and Missouri Assessment Program [MAP] and the qualitative data [open-ended questions, responses, and classroom observations of teachers]). This study was based on a collaborative effort in identifying the existence of teaching factors which could increase student achievement on the MAP test. The MAP test is one of several educational reforms mandated by the No Child Left Behind …

Evaluation Of Medication Effects On Academic Performance, Sleep, And Core Adhd Symptoms In Children, Tina K. Head

Dissertations

Idiosyncratic effects of Vyvanse™ (lisdexamfetamine dimesylate) and placebo were evaluated in a double-blind alternating treatments experimental design in this 4-week study. Direct, objective measures were combined with traditional behavior ratings to provide data sets to assess whether or not the prescribed stimulant medication showed detectable therapeutic effects for a child whose positive response to medication was not obvious via traditional subjective methods. Effects of medication on core ADHD symptoms, academic performance, and sleep in four children ages 10-12 with attention deficit/ hyperactivity disorder. Potential side effects were also measured. Daily measures included parent rating scales, side effects checklist, sleep journal …

Opt Out: Women With Children Leaving Mid-Level Student Affairs Positions, Dana Hebreard

Dissertations

This phenomenological study is about the decision-making process of women with young children at the mid-level student affairs position who decide to opt out of their career for a minimum of one year, and for some, return to higher education. The study is based on interviews with 17 mid-level college administrators and mothers of young children, infant to pre-teen, who chose to opt out of their careers rather than continuing to balance family and career. Though the individuals interviewed were each unique in their socioeconomic status, education, and career path, their issues and concerns were similar. They openly revealed the …

Revitalization, Reinvigoration And Motivation Of Survivors In Changed, Restructured And Downsized Organizations: A Study Of Leadership Challenges In Local Government, Ronald L. Baza Edd

Dissertations

Over the past two-plus decades, corporate mergers, government consolidations, workforce downsizings and plant closures have increased dramatically; as a consequence, millions of workers around the nation have lost their jobs. Not surprisingly, researchers have begun to focus considerable attention on downsizing, restructuring and revitalization efforts as a means for understanding organizations undergoing major transformation. Although the studies that have been conducted have dealt with a wide range of issues associated with organizational downsizing and restructuring, there is an absence of research examining mid and upper level managers' perceptions of the efficacy of their efforts to revitalize their downsized organizations and, …

Understanding Charter School Governance: A Case Study Of A Conversion Charter School Board Of Directors, David Mark Silver Phd

Dissertations

The charter school movement has been at the forefront of educational reform since the 1990s. The majority of charter school research has focused on academic achievement and issues of access, equity, and funding. Less attention has focused on charter school governance, yet evidence suggests that governance challenges represent a significant impediment to the long-term sustainability of this movement. This qualitative case study examined the operations of a board of directors in a conversion charter school. The study included observations of monthly board of directors meetings over a 16-month period (February 2008–June 2009), interviews with members of the board of directors …

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 …

A History Of The American Film Institute, Deborah Jae Alexander

Dissertations

The American Film Institute (AFI) is a highly politicized, powerful organization. To date, most historical documentation and recording of AFI events and activities has been disseminated to the mass media from within the organization through its own publications or in other historical documentation as incidental history in relation to another topic. This dissertation, written as an overview, is the first comprehensive, independent historical examination of the AFI. The examination begins with an exploration of the development, activities and decline of the American Council on Education‟s original AFI and other film organizations that existed prior to the present day AFI. It …

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 …

Relationships Between Particle Properties And Scattering In Coastal Waters Of The Northern Gulf Of Mexico Influenced By The Mississippi River, Bruce Alan Spiering

Dissertations

This study was conducted to determine how the characteristics of an assemblage of suspended particles, including their composition and size affect the relationship between the optical scattering coefficient b (m-1), and the dry mass of the particles in suspension. Knowledge of the scattering to total suspended matter (TSM) ratio, i.e. the mass specific scattering coefficient b* (m2/g), is important because the light detected by optical imaging sensors used for remote sensing is the light that has been scattered by particles back through the water surface. If this ratio is not known or varies within the region of interest, accurate estimates …

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 …

Cryptid, Phillip Jarett Underwood

Dissertations

Cryptid is a term from the field of cryptozoology, which ostensibly presents itself as the study of creatures that may or may not exist, such as – but not limited to – Bigfoot, the Loch Ness Monster, and the Jersey Devil. The term itself, cryptid, refers to one of these unknown creatures. The novella presented here concerns a half-Native American man and his struggle to know not only his dead parents, but himself and his place in the world. While cryptids play a minor role within the boundaries of the narrative itself, the novella concerns itself more with the ways …

The Mathematics Self-Efficacy And Calibration Of Students In A Secondary Mathematics Teacher Preparation Program, Joseph Champion

Dissertations

Social cognitive research has linked students’ perceived academic capabilities, or self-efficacy, to academic choices, self-regulation, and performance in diverse contexts from reading comprehension to mathematical problem solving. This study addressed a need to investigate the interactions among prior achievement, self-efficacy, calibration (the accuracy of self-efficacy beliefs), and mathematics performance for students enrolled in the content courses of a secondary mathematics teaching program. The sample included 195 students in 12 classes ranging from calculus to second-semester abstract algebra at a mid-sized U.S. doctoral-granting university with a large secondary mathematics teacher education program. Data included background surveys, selfefficacy ratings preceding final exams, …

Critical Multicultural Education For Social Action, Jan Ricketts Ferrari

Dissertations

No abstract provided.

Comparison Of Teaching Strategies On Teaching Drug Dosage Calculation Skills In Fundamental Nursing Students, Jaclynn Suzanne Huse

Dissertations

No abstract provided.