Digital Commons Network^™

Modified Network Simplex Method To Solve A Sheltering Network Planning And Management Problem, Lingfeng Li

Theses and Dissertations

This dissertation considers sheltering network planning and operations for natural disaster preparedness and responses with a two-stage stochastic program. The first phase of the network design decides the locations, capacities and held resources of new permanent shelters. Both fixed costs for building a new permanent shelter and variable costs based on capacity are considered. Under each disaster scenario featured by the evacuee demand and transportation network condition, the flows of evacuees and resources to shelters, including permanent and temporary ones, are determined in the second stage to minimize the transportation and shortage/surplus costs. Typically, a large number of scenarios are …

Numerical Analysis Of Aberdeen Pool Sedimentation, Nathan Dwayne Clifton

Theses and Dissertations

The main objective of this research was to create a two dimensional and three dimensional Environmental Fluid Dynamics Code (EFDC) model using Aberdeen Pool of the Tennessee-Tombigbee Waterway for the purpose of determining the differences in their ability to address sediment transport. These objectives were reached in the results with comparisons of water levels, sediment concentrations, shear stress, and bed change. The models produced very similar results for the majority of the sediment transport throughout both models with the overall trend being deposition except in the upper limits of the Tombigbee River. The main differences between the two models are …

Optimal Operation Of Multi-Terminal Vsc Based Mvdc Shipboard Power System, Sandeep Yeleti

Theses and Dissertations

The Medium Voltage DC (MVDC) architecture of shipboard power system (SPS) with higher power density and enhanced power control is seen as a future prospect in warships by US Navy. Optimal operation of SPS is essential to enable efficient power and energy usage in the tightly coupled and power limited systems. It helps in obtaining adequate and reliable power supply by rescheduling generator output and energy storage devices for different operating scenarios and can also ensure power supply to critical loads during fault conditions. The self-commutated Voltage Source Converters (VSCs) with high dynamic performance and independent control over the real …

Pedestrian Dynamics: Modeling And Analyzing Cognitive Processes And Traffic Flows To Evaluate Facility Service Level, Hohyun Lee

Theses and Dissertations

Walking is the oldest and foremost mode of transportation through history and the prevalence of walking has increased. Effective pedestrian model is crucial to evaluate pedestrian facility service level and to enhance pedestrian safety, performance, and satisfaction. The objectives of this study were to: (1) validate the efficacy of utilizing queueing network model, which predicts cognitive information processing time and task performance; (2) develop a generalized queueing network based cognitive information processing model that can be utilized and applied to construct pedestrian cognitive structure and estimate the reaction time with the first moment of service time distribution; (3) investigate pedestrian …

Static And Free Vibration Analyses Of Composite Shells Based On Different Shell Theories, Ebrahim Asadi

Theses and Dissertations

Equations of motion with required boundary conditions for doubly curved deep and thick composite shells are shown using two formulations. The first is based upon the formulation that was presented initially by Rath and Das (1973, J. Sound and Vib.) and followed by Reddy (1984, J. Engng. Mech. ASCE). In this formulation, plate stiffness parameters are used for thick shells, which reduced the equations to those applicable for shallow shells. This formulation is widely used but its accuracy has not been completely tested. The second formulation is based upon that of Qatu (1995, Compos. Press. Vessl. Indust.; 1999, Int. J. …

Juvenile Hormone Regulates Vitellogenin Gene Expression Through Insulin-Like Peptide Signaling Pathway In The Red Flour Beetle, Tribolium Castaneum, Zhentao Sheng, Jingjing Xu, Hua Bai, Fang Zhu, Subba R. Palli

Entomology Faculty Publications

Our recent studies identified juvenile hormone (JH) and nutrition as the two key signals that regulate vitellogenin (Vg) gene expression in the red flour beetle, Tribolium castaneum. Juvenile hormone regulation of Vg synthesis has been known for a long time in several insects, but the mechanism of JH action is not known. Experiments were conducted to determine the mechanism of action of these two signals in regulation of Vg gene expression. Injection of bovine insulin or FOXO double-stranded RNA into the previtellogenic, starved, or JH-deficient female adults increased Vg mRNA and protein levels, thereby implicating the pivotal role for …

Crusader, December, 9, 2011, College Of The Holy Cross

Student Newspapers

The student newspaper for the College of the Holy Cross in Worcester, Massachusetts. Articles include coverage of campus events and issues, sports, editorials and special features.

Chimes: December 9, 2011, Calvin College

Chimes

Campus Fair Trade sale promotes justice by Amanda Elliott

Acton translates Kuyper by Ryan Devries

Choirs worship with LaGrave by Grace Ruiter

Scientists fight bacterial resistance by Jon Hielkema

Paradise Fears impressive by Jess Koster

Soccer team finishes second in the nation by Mark Zylstra

State V. Worthington Respondent's Brief Dckt. 38907

Not Reported

No abstract provided.

Peripheral Visual Cues And Their Effect On The Perception Of Egocentric Depth In Virtual And Augmented Environments, James Adam Jones

Theses and Dissertations

The underestimation of depth in virtual environments at mediumield distances is a well studied phenomenon. However, the degree by which underestimation occurs varies widely from one study to the next, with some studies reporting as much as 68% underestimation in distance and others with as little as 6% (Thompson et al. [38] and Jones et al. [14]). In particular, the study detailed in Jones et al. [14] found a surprisingly small underestimation effect in a virtual environment (VE) and no effect in an augmented environment (AE). These are highly unusual results when compared to the large body of existing work …

The Beacon - Vol 10 No. 7 - December 9, 2011, Merrimack College

The Beacon

The Beacon - the student newspaper of Merrimack College. Volume 10, Number 7 - December 9, 2011. 12 pages

Polychlorinated Biphenyls (Pcbs) In Stormwater From The Pajarito Plateau, Northern New Mexico., Marwin Shendo

Water Resources Professional Project Reports

Polychlorinated Biphenyls (PCBs) are distributed throughout the globe and represent an environmental threat to wildlife and human health. The New Mexico Water Quality Control Commission has established surface water standards for Wildlife Habitat and the Human Health of 14,000 and 640 pg/L respectively. Preliminary studies identified elevated levels of PCBs in stormwater samples collected from Los Alamos National Laboratory (LANL) watersheds draining the Pajarito Plateau in northern New Mexico, including the Los Alamos County town site. PCB samples were collected at 59 stormwater runoff Site Monitoring Areas (SMAs) from 1996 to 2008 at LANL. PCB Aroclor concentrations ranged from 218,070 …

A Case Study Of The State Takeover Of The Sunflower County School District, Paula Allen Vanderford

Theses and Dissertations

The performance of the nation‟s public schools continues to be a concern of policymakers, educators, and parents. Stakeholders cite the lack of academic achievement, disruptive student behavior, and failure to provide students with a safe and orderly school environment as evidence of being unsuccessful. To ensure school districts, schools, administrators, teachers, and students meet acceptable performance standards, states are implementing a variety of accountability policies. Two of the more controversial accountability approaches are state takeovers of local school districts and the reconstitution of schools. At least 29 states have enacted policies that allow the takeover of a school district. Changes …

A Genomic And Transcriptomic Analysis Of Wood Decay And Copper Tolerance In The Brown Rot Fungus Fibroporia Radiculosa, Juliet D. Tang

Theses and Dissertations

Brown rot fungi are notoriously copper-tolerant, which makes them difficult to control with copper-based wood preservatives. Brown rot fungi are also unique because they have evolved a bilateral strategy for decay. Their initial attack involves the production of hydroxyl free radicals to increase wood porosity, followed by an enzymatic onslaught of glycoside hydrolases that free the sugars locked within cellulose and hemicellulose. Our molecular understanding of these biological processes, however, has been hampered by our limited knowledge of the underlying genetic mechanisms. To address this knowledge gap, high-throughput, short-read sequencing was used to conduct a comprehensive analysis of the genomics …

Activated Sludge As Renewable Fuels And Oleochemicals Feedstock, Emmanuel Durante Revellame

Theses and Dissertations

The utilization of activated sludge as feedstock for biofuel and oleochemical production was investigated. Initial studies included optimization of biodiesel production from this feedstock through in situ transesterification. Results of these studies indicated that activated sludge biodiesel is not economically viable. This was primarily due to relatively low yields and the high economics of feedstock dewatering. Strategies to increase biofuel yield from activated sludge were then evaluated. Bacterial species present in activated sludge are known to produce a wide variety of lipidic compounds as carbon and energy storage material and as components of their cellular structures. In addition to lipidic …

An Economic Analysis Of Health, Savings, And Labor In Relation To Gender, Comfort Febisola Ricketts

Theses and Dissertations

This dissertation is divided into five chapters consisting of three short essays that concentrate on economic analysis of health, savings and labor. The first essay is aimed at investigating the influence of increased work hours on individuals’ health and how this may differ between males and females. It is expected that increased hours of work will have a negative impact on health but this impact may be stronger for females. In the second essay, the relationship between individuals’ health and savings behavior is analyzed. Healthy individuals are expected to be more productive, earn higher incomes, and have lower medical expenditures …

The Legacy Of Cotton: A Geographical Perspective On The Influence Of Traditionalist Politics In Mississippi, William Edward Stephen Cottrell

Theses and Dissertations

It was hypothesized that the socialspatial dialectic (location, education, politics and race) contributes to Mississippi’s low livability ranking. Regression models were employed using race, student funding rates, high school graduation rates, property tax, and voter turnout in the 82 counties as variables. The research found evidence that Blacks have lower graduation rates than Whites and property tax has a significant effect on voter participation at the gamma = .001 level. Social capital disadvantage seems to reside within both races with voter participation, property tax rates, and school funding being more pronounced with Whites. Results suggest that political capital should not …

An Investigation Of Institutional Investor And Firm Heterogeneity, Muhammad Arif Qayyum

Theses and Dissertations

In the first essay, we extend the research of Grinstein and Michaely (2005) on the relation between institutional ownership and payout policy by focusing on the institutions most likely to vote their shares. We account for heterogeneity among institutional investors as well as for firms. This paper accounts for heterogeneity among institutional investors based on their portfolio concentration and investment horizon and firms are differentiated based on their importance for institutional investors (based on percentage of total portfolio invested in the firm), free cash flow and debt-to-equity ratio. We examine the institutional holding data from 1980 to 2006. Like Grinstein …

Assessing The Impact Of Reading First Programs On Student Achievement In K-3 Classrooms In Selected Mississippi Schools, Angel Lakease Day-Meeks

Theses and Dissertations

This study investigated the implementation and impact of Reading First programs in 8 elementary schools across the state of Mississippi. The study assessed how principals, literacy coaches, and kindergarten through third grade teachers perceived the implementation of the Reading First program at their respective schools. Data from these three groups of research participants were analyzed to determine if there were differences in perceptions regarding program implementation. This study also examined if there was a relationship between participants’ judgment about implementation and second and third grade students reading scores on the Mississippi Curriculum Test (MCT). This study employed descriptive, survey, causal-comparative, …

Biological Community Evaluations Of Potential Black Pine Snake (Pituophis Melanoleucus Lodingi) Habitat In Mississippi, Clinton Porter Smith

Theses and Dissertations

I studied four areas in south Mississippi from 2009-2010 to examine habitat conditions and faunal communities associated with presence of black pine snakes (Pituophis melanoleucus lodingi), a candidate for federal listing. Field studies included vegetation sampling, small vertebrates trapping, and fire ant (Solenopsis invicta) mound densities estimation. Areas that supported black pine snakes exhibited vegetation communities that differed from areas that did not support pine snakes. Presence of black pine snakes was influenced by ground cover vegetation and stump hole densities. Greatest densities of ant mounds were detected in areas that supported pine snakes and gopher tortoises (Gopherus polyphemus). Species …

Development Of A Standard Stormwater, Erosion And Sediment Control Training And Certification Program For Contractors Of Construction Sites One Acre Or Larger In Desoto County, Mississippi, Susana Cook Martin-Velazquez

Theses and Dissertations

Polluted runoff has been widely recognized by environmental scientists and regulators as the single largest threat to water quality in the United States. Contractor training and certification are among the four main Best Management Practices that the Environmental Protection Agency recommends to assist contractors in complying with Phase II Municipal Separate Storm Sewer Systems requirements that regulate construction sites stormwater runoff. The focus of the study is the review of training requirements for construction activities and stormwater permitting requirements in the states of Alabama, Arkansas, California, Florida, Louisiana, Maine, Maryland, Mississippi, and Tennessee. The review of the various training and …

Distance Education In Natural Resources: A National Study Of Inhibitors And Motivators For Participation In Distance Education Programs, Jodi Roberts

Theses and Dissertations

Distance education is an innovative delivery method that is gaining a great deal of attention on university campuses across the United States, as well as worldwide. While this attention may seem to be newfound, the earliest record of the practice of distance education traces back to Biblical times and was later referred to as correspondence. Land-grant institutions in the United States were among the first to offer correspondence courses to students who may otherwise not have been able to attend traditional university classes. While online education programs and courses across the United States have grown, from 1.6 million students enrolled …

Effect Of Asphalt Emulsion On Surface Treated Flexible Pavements Using The Bending Beam Rheometer, Jason Michael Barham

Theses and Dissertations

Chip and scrub seal treatments are common pavement preservation practices that use asphalt emulsions. Their performance has been studied for several years, yet many questions remain. The primary thesis objective was to study near surface behaviors of flexible pavements that are candidates for seal treatments. This study investigated the ability of the bending beam rheometer (BBR) to detect pavement surface changes due to the application of asphalt emulsion. Estimated stiffness and m-value data was recorded for three asphalt concrete mixtures using mixture beams approximately 120 mm long by 12 mm wide by 7.7 mm thick sawn from the surface of …

Exploring Math Anxiety As It Relates To Math Achievement, Gender, And Race, Wanda Denise Pittman Merritt

Theses and Dissertations

Students’ mathematic achievement has not met national, state, or local expectations for decades. The No Child Left Behind Act mandated that by school year 2013-2014, all students in public schools across the nation are to perform at the proficient level or higher in math. The specific problem addressed in the present study was low measures of students’ math achievement in one Mississippi school district. Prior research suggested that math anxiety was a major factor that influenced students’ math performances. Hypothesis 1 for this study stated there is a statistically significant negative relationship between seventh grade students’ math anxiety scores and …

Creating Resilient, Sustainable Local Governments: Merging Human Resource Management And Emergency Management, Stacey Cole Mann

Theses and Dissertations

In the aftermath of Hurricane Katrina, Goodman and Mann (2008) found that many locales along the Mississippi Gulf Coast did not have plans that addressed human resources (HR) issues in the aftermath of a disaster, and many vital employees were not included in the emergency planning process. The authors concluded that if involved in planning, HR managers could address typical HR issues such as compensation, retention, recruitment, and task re-orientation that become more difficult following a disaster. The purpose of this study was to examine the level of involvement of HR departments in the emergency planning process as well as …

Cross-Entropy Approaches To Software Forensics: Source Code Authorship Identification, James Thomas Stinson

Theses and Dissertations

Identification of source code authorship can be a useful tool in the areas of security and forensic investigation by helping to create corroborating evidence that may send a suspected cyber terrorist, hacker, or malicious code writer to jail. When applied to academia, it can also prove a useful tool for professors who suspect students of academic dishonesty, plagiarism, or modification of source code related to programming assignments. The purpose of this dissertation is to determine whether or not cross-entropy approaches to source code authorship analysis will succeed in predicting the correct author of a given piece of source code. If …

The Original Footloose: How President Murlin Pushed Back Against Traditional Depauw Methodism, Sam Spahn

Student Research

No abstract provided.

State V. Wing Respondent's Brief Dckt. 38662

Not Reported

No abstract provided.

State V. Coleman Respondent's Brief Dckt. 38708

Not Reported

No abstract provided.

Medication-Related Problems In Older Adults: A Focus On Underuse Of Warfarin And Warfarin-Antibiotic Interactions, Parinaz K. Ghaswalla

Theses and Dissertations

The work presented in this dissertation focuses on two important medication-related problems in older adults, that is, untreated indication and drug-drug interactions, specifically with respect to a high-risk medication such as warfarin. Warfarin is a challenge to use in clinical practice due to its narrow therapeutic index, variability in dose-response and its interactions with numerous foods and drugs. This dissertation presents the research from two projects. In the first project the prevalence and predictors of warfarin use in nursing home (NH) residents with atrial fibrillation (AF), and use of secondary stroke prevention strategies was determined, in order to understand the …