Digital Commons Network^™

164th Commencement, Fall

Commencement Programs

No abstract provided.

On The Centenary Of Muriel Rukeyser's Birth: The Lives Of A Poet, Catherine Gander

Ruke Blog

No abstract provided.

Model-Based Autonomic Performance Management Of Distributed Enterprise Systems And Applications, Rajat Mehrotra

Theses and Dissertations

Distributed computing systems (DCS) host a wide variety of enterprise applications in dynamic and uncertain operating environments. These applications require stringent reliability, availability, and quality of service (QoS) guarantee to maintain their service level agreements (SLAs). Due to the growing size and complexity of DCS, an autonomic performance management system is required to maintain SLAs of these applications. A model-based autonomic performance management structure is developed in this dissertation for applications hosted in DCS. A systematic application performance modeling approach is introduced in this dissertation to define the dependency relationships among the system parameters, which impact the application performance. The …

Modeling Dendritic Solidification Using Lattice Boltzmann And Cellular Automaton Methods, Mohsen Eshraghi Kakhki

Theses and Dissertations

This dissertation presents the development of numerical models based on lattice Boltzmann (LB) and cellular automaton (CA) methods for solving phase change and microstructural evolution problems. First, a new variation of the LB method is discussed for solving the heat conduction problem with phase change. In contrast to previous explicit algorithms, the latent heat source term is treated implicitly in the energy equation, avoiding iteration steps and improving the formulation stability and efficiency. The results showed that the model can deal with phase change problems more accurately and efficiently than explicit LB models. Furthermore, a new numerical technique is introduced …

Drawing Lessons From The U.K. Constitutional Reform Act Of 2005, Terence J. Lau

Management and Marketing Faculty Publications

In this City Square dialogue, Professor Judith Maute provided the initial spark in her important 2007 article on reforms to judicial selection in the United Kingdom.[1] In her article, Professor Maute outlined the breathtaking and daring changes implemented in the U.K. that upended centuries of tradition to modernize and strengthen public confidence in the judiciary. Most significant among these changes were the creation of a Supreme Court and dramatically moving the process of becoming a judge away from a secretive appointment to a professional Judicial Appointments Commission.[2] The reforms eschew direct affirmative action, but place an explicit value on diversity …

A Dynamic Hybrid Rans/Les Modeling Methodology For Turbulent/Transitional Flow Field Prediction, Mohammad Faridul Alam

Theses and Dissertations

A dynamic hybrid Reynolds-averaged Navier-Stokes (RANS)-Large Eddy Simulation (LES) modeling framework has been investigated and further developed to improve the Computational Fluid Dynamics (CFD) prediction of turbulent flow features along with laminar-to-turbulent transitional phenomena. In recent years, the use of hybrid RANS/LES (HRL) models has become more common in CFD simulations, since HRL models offer more accuracy than RANS in regions of flow separation at a reduced cost relative to LES in attached boundary layers. The first part of this research includes evaluation and validation of a dynamic HRL (DHRL) model that aims to address issues regarding the RANS-to-LES zonal …

Creation Of An Internal State Variable Plasticity-Damage-Corrosion Model Validated By Experiments With Magnesium Alloys, Christopher Avery Walton

Theses and Dissertations

In this study, a new consistent formulation coupling kinematics, thermodynamics, and kinetics with damage using an extended multiplicative decomposition of the deformation gradient that accounts for corrosion effects is presented. The technical approach used for modeling the corrosion behavior of magnesium alloys was divided into three primary steps. First, a predictive corrosion model was developed based on experimental corrosion observations. The experimentally-observed corrosion mechanisms of pitting, intergranular, and general corrosion on the AZ31 magnesium alloy were quantified in 3.5 wt.% NaCl immersion and salt spray environments using optical microscopy and laser profilometry to document the changes in the pit characteristics. …

A Framework For Identifying Appropriate Sub-Regions For Ecosystem-Based Management In Northern Gulf Of Mexico Coastal And Marine Environments, Jennifer Sloan Ziegler

Theses and Dissertations

Nearly half of the population of the United States lives in coastal regions, and millions of visitors from across the nation and world enjoy the coasts every year. Coastal and marine areas provide for recreation, economic activities essential for the financial health of the nation, and vital ecological services. As they provide so many benefits to the U.S., it is vital to protect and preserve the coastal and ocean areas from the increasing, competing demands they are facing. In order to protect and preserve these complex systems, a comprehensive approach incorporating science, engineering, humanities, and social sciences should be taken; …

“In Her Shoes”: Victorian Lady Explorers In Imperial Africa And Their Relationship To Contemporary Travellers Of A Commercialized, Nostalgic Landscape, Mary Smith

History & Classics Student Scholarship

Smith uses the framework of the Cape to Cairo trek to illuminate both the problematic maternalist feminism of early 19th century women, and to draw parallels with contemporary nostalgia for a romanticized and racialized past.

Commencement Convocation Exercises - December 2013, Prairie View A&M University

Commencement and Convocation Exercises

No abstract provided.

2013 Fall Commencement, Harding University

Commencement Programs

Program for the Harding University Commencement on December 14.

Commencement Speaker: Steve W. Reeves

Optimization Models For Cost Efficient And Environmentally Friendly Supply Chain Management, Gokce Palak

Theses and Dissertations

This dissertation aims to provide models which will help companies make sustainable logistics management and transportation decisions. These models are extensions of the economic lot sizing model with the availability of multiple replenishment modes. The objective of the models is to minimize total replenishment costs and emissions. The study provides applications of these models on contemporary supply chain problems. Initially, the impact of carbon regulatory mechanisms on the replenishment decisions are analyzed for a biomass supply chain under fixed charge replenishment costs. Then, models are extended to consider multiple-setups replenishment costs for age dependent perishable products. For a cost minimization …

Attitudes And Perceptions Of Nursing Homes., Amanda C. Black

Undergraduate Honors Theses

The purpose of this study was to examine how past experiences with nursing homes influence perceptions and attitudes of college students toward nursing homes in the United States. A review of the current research literature indicates that nursing homes are publicly scrutinized in a negative manner. Variables examined included students’ college of study, experience with nursing homes either from personal experience, from a well-known relative or friend, or the media, and different attitudes and perceptions including good or bad views of nursing homes. Results indicate that students’ perceive nursing homes more negatively than positively even when their experience came from …

Extending The Conversation: A Network Analysis Of Academic Associations In Workplace Spirituality, Monty Lynn, David J. Burns

Management Sciences

Examining academic networks provides insight into boundaries and boundary crossing as well as knowledge diffusion. We examine four academic networks focused on business, spirituality, and religion to identify network boundaries and boundary crossing. Scholars tend to align with networks consistent with the nature of their employing institution, both in its relative emphasis on research and its religious affiliation. Network and religious differences contribute to the relative isolation of research communities, despite shared topical interests and reliance on similar scholarly sources. The use of normative authorities may limit networking, but the relative absence of weak network links across networks may underestimate …

Conventional Pavements And Perpetual Pavements: A Rational And Empirical Approach, Wenqi Wang

Theses and Dissertations

A study has been conducted to compare conventional pavements and perpetual pavements with a particular emphasis on perpetual pavements. One of the main drawbacks of conventional pavements and motivations for this work is the maintenance required for hot mix asphalt (HMA) pavements with sub-drainage systems. Perpetual pavements, as the name suggests, are designed with a long life. However, this is a relatively new concept and there are still many unknowns concerning their performance. This dissertation was written to answer some of the questions. The study examines structural response and performance of perpetual pavements. Also, deterioration and performance of perpetual pavements …

Characterization And Reaction Of An Analog Of The Anticancer Drug Oxaliplatin, Jonathan D. Hendrie

Mahurin Honors College Capstone Experience/Thesis Projects

Oxaliplatin is an anticancer drug that reacts with DNA, RNA, and proteins both in vitro and in vivo. Our research focuses on synthesizing analogs of oxaliplatin and understanding how bulky ligand groups affect reaction with amino acids. (R,R)-N,N’-dimethyl-1,2-diaminocyclohexane platinum(II) oxalate or Pt(Me2dach)(ox) varies from oxaliplatin or Pt(dach)(ox) in that it has one methyl group attached to each platinum coordinated nitrogen. Nuclear Magnetic Resonance (NMR) spectroscopy has shown that the reactions of N-Acetylmethionine (N-AcMet) with Pt(Me2dach)(ox) and Pt(dach)(ox) proceed at similar rates suggesting that the methyl groups of Pt(Me2dach)(ox) have little effect on the initial reaction. Whereas the reaction of Pt(dach)(ox) …

Racial Desegregation Of Higher Education In Virginia: Black And White, And Gray?, Alexandra Jaclyn Kolleda

Senior Honors Projects, 2010-2019

No abstract provided.

Environmental Risk Perceptions, Attitudes, And Behaviors: A Study Of College Students Living In A Risk Society, Julia Spring Pei

Senior Honors Projects, 2010-2019

This present study examines the relationships between environmental risk perceptions and pro-environmental attitudes and behaviors within the theory of the risk society. This quantitative study was conducted online, with a sample size of 218 undergraduate college students from James Madison University. Environmental risks were measured at the societal and individual levels, as well as within five separate risk categories. As expected, I found positive relationships between these risks and pro-environmental attitudes and behaviors, however the relationships between individual and societal risk perceptions were different than I anticipated. Where I expected individual risk perceptions to drive both pro-environmental behaviors and attitudes, …

Public Perception On The State Of Air Quality In Malta, Nikolas Cassar

Masters Theses, 2010-2019

Public perception on the state of air quality is an unclear and hazy concept whereby every individual has different opinions and views. In fact, the state of air quality is a major concern in many countries, including in Malta. This problem arises from the emissions of a number of pollutants to the atmosphere from a host of processes such as the combustion of fuel to generate electricity and the internal combustion engines to manoeuvre cars. Amongst these pollutants, there are benzene and nitrogen dioxide, which are very hazardous since they cause problems related to human health and contribute in the …

Assessment Of Seawater Quality: Do Public Perceptions Of Seawater Quality Match Indications Given By Macroalgae?, Angela Bartolo

Masters Theses, 2010-2019

Determination of seawater quality is an essential activity in coastal areas especially in ones that attract bathers. This study aims to investigate whether the Ecological Quality Status (EQS) of seawater in bathing areas in the Maltese Islands differs across sites. The study also aims to investigate the correlation between public perceptions and objective measures of seawater quality as well as factors affecting perception of seawater quality. Another objective of this study is to investigate the public’s knowledge about macroalgae and opinion on macroalgae. The EQS of seawater in six coastal sites in the Maltese Islands is investigated using the EEI-c …

Improving The Energy Efficiency Of Dehumidification Technology At A Large Facility In Florida, Brandon Willson Hoilett

Masters Theses, 2010-2019

This thesis examines energy use and management of twenty heat pipes used in dehumidification systems at a large (10,000+ acre) facility in Florida. Eleven of the twenty heat pipes use electric strip heaters that, when activated, consume 693.8 kW of electrical power from the grid. Solar photovoltaics, specifically a silicon monocrystalline cell with 22.5% efficiency, were considered as a means to provide an alternative energy source and opportunity for cost savings for 11 of the heat pipes (Sunpower, 2011). The remaining nine heat pipes use hot water heaters for which alternative energy sources were not considered. Data gathered and analyzed …

Potential Energy Savings When Using Saline Water For Cooling Chillers In Malta, Mireille Micallef

Masters Theses, 2010-2019

Several cooling systems found in facilities on the coast of St. Julian’s were found to be making use of chillers whose condensers are cooled with saline water as opposed to air. The former practice is advantageous since it results in better chiller performance which can be explained through thermodynamic principles. The principle of operation of water cooled chillers is to reject heat from the condenser to saline groundwater obtained from boreholes through a heat exchanger. The higher temperature saline ground water is then rejected to the sea. Chillers cooled with saline groundwater are subject to the Borehole Drilling and Excavation …

Meta-Heuristic Optimization Of Antennas For Biomedical Applications, Aaron Zachary Hood

Theses and Dissertations

Given the proper conditions, antennas applied in medicine can offer improved quality of life to patients. However the human body proves hostile to typical, analytical antenna design techniques as it is composed entirely of frequency- and temperature-dependent lossy media. By combining optimization techniques with numerical methods, many of these challenges may be overcome. Particle swarm optimization (PSO) models the solution process after the natural movement of groups such as swarms of bees as they search for food sources. This meta-heuristic procedure has proven adept at overcoming many challenging problems in the electromagnetics literature. Therefore, this dissertation explores PSO and some …

Strategies For Optimization Of Diesel-Ignited Propane Dual Fuel Combustion In A Heavy Duty Compression Ignition Engine, Chad Duane Carpenter

Theses and Dissertations

A 12.9 L heavy duty compression ignition engine was tested with strategies for dual fuel optimization. The effects of varied intake manifold pressure as well as split-injection strategies at a load of 5 bar BMEP and 85 PES were observed. These results were used to allow testing of split-injection strategies at a higher load of 10 bar BMEP at 70 PES that were void of MPRR above 2000 kPa/CAD. The split-injection strategies at 5 bar BMEP showed that lower BSNOx can be achieved with minimal drop in FCE. Varying intake manifold pressure revealed that combustion occurs earlier in a cycle …

Multilevel Design Optimization Under Uncertainty With Application To Product-Material Systems, Saber Dormohammadi

Theses and Dissertations

The main objective of this research is to develop a computational design tool for multilevel optimization of product-material systems under uncertainty. To accomplish this goal, an exponential penalty function (EPF) formulation based on method of multipliers is developed for solving multilevel optimization problems within the framework of Analytical Target Cascading (ATC). The original all-at-once constrained optimization problem is decomposed into a hierarchical system with consistency constraints enforcing the target-response coupling in the connected elements. The objective function is combined with the consistency constraints in each element to formulate an augmented Lagrangian with EPF. The EPF formulation is implemented using double-loop …

Issues And Challenges Of Starting A Civil Engineering Or Surveying Firm In Mississippi, Bruce Eric Mainka

Theses and Dissertations

This thesis summarizes some of the challenges and risks faced by new civil engineering or surveying business owners, as well as, engineering managers in Mississippi. Additionally, this paper will cover how these business owners take on those business challenges to become and remain successful. The data covered represents answers from the owners asked via phone conversations. The number of twenty employees or less was the criteria for a firm to be considered small. It was decided that approximately 20% of the firms listed, or a total of 20, would statistically represent the current state of affairs of small to medium …

"Through Hazel Eyes" : Hazel Brannon Smith's Fight For Free Speech And Justice In Mississippi 1936-1985, Jeffery Brian Howell

Theses and Dissertations

Hazel Brannon Smith, a prominent white newspaper owner in Mississippi before, during, and after the civil rights era was an avowed supporter of Jim Crow segregation for the first half of her career, until pressure from the white establishment and the changing political and social milieu of the 1950s and 1960s pushed her to become an ally of the black struggle for social justice. Smith's biography reveals how many historians have miscast white liberals of this period. Smith was considered a liberal by her peers, but her actions reveal the firm limits of white liberalism in the rural South during …

A Comparison Of Participant Gains In Attitude And Behavior After Experiencing A Food Safety Curriculum In Traditional And Computer Delivered Environments, Jennifer Knowles Schilling

Theses and Dissertations

Child care providers in Mississippi are required by the Mississippi Health Department to obtain food manager’s training and certification. The TummySafe© program satisfies this requirement and is offered in a self-paced computer delivered version and a traditional classroom version. This research explores participant changes in attitude and self-reported behaviors in the two methods of curriculum delivery as well as the correlation of knowledge change with attitude and self-reported behavior change. A quasi-experimental, pre-test/post-test design was used. Attitude change was not significantly different in the two methods. Traditional participants reported a higher change in self-reported behaviors than computer delivered participants. Both …

A Decision Support System To Design The In-Bound Supply Chain For Biomass Co-Fire In Power Plants, William David Bowen

Theses and Dissertations

This work is focused on designing a hub-and-spoke in-bound supply chain networks for coal plants. Biomass and coal are coired to produce electricity. One of the main reasons for focusing this study on biomass supply to coal plants is that biomass, in the form of forest and agricultural waste, is cleaner to burn as compared to coal. The user, most likely a supply chain manager or production control engineer, would input their supplier locations, costs and biomass availability. The mathematical model which supports this DSS is a mixed-integer program. The model uses this input to identify optimal order quantities which …

A Look At New Public Management Through The Lens Of The Ncib Act Specifically As It Relates To Traditionally Marginalized Populations, Aaron Cornelius Rollins

Theses and Dissertations

Performance policies propose to enhance the quality of services provided to vulnerable citizens. However, the ability to accomplish this goal is largely unsubstantiated. In the field of education, the No Child Left Behind Act outlined performance policy guidelines that held educators accountable for disadvantaged students outcomes and provided students with the option to seek the serves of alternative providers through a student transfer provision. This dissertation assesses the quality of states’ NCLB provisions that targeted minority and vulnerable student performance as well as utilization of the NCLB transfer provision allowing students to exit underperforming schools. It indicates that teachers’ union …