Digital Commons Network^™

A Non-Equilibrium, Pressure-Pressure Formulation For Air-Water Two-Phase Flow And Heat Transport In Porous Media, Amanda Meadows Hines

Theses and Dissertations

The detection of trace explosives in the subsurface is an active area of research for landmine detection. Understanding the air-water flow and heat transport phenomena in the subsurface plays an important role in improving chemical vapor detection. Implementing a finite element method that accurately captures water vapor transport in the vadose zone is still an open question. A non-equilibrium, pressure-pressure formulation has been implemented based on Smits, et al [22]. This implementation consists of four equations: a wetting phase (water) mass balance equation, a non-wetting phase (air) mass balance equation, a water vapor transport equation, and a heat transport equation. …

Algal Biodiesel Production Via Extractive-Transesterification Using Microwave And Ultrasound Irradiation, Edith L. Martinez-Guerra

Theses and Dissertations

This study presents the use of non-conventional methods such as microwaves and ultrasound for algal biodiesel production. Dry algae biomass (Chlorella sp.) was used as feedstock to evaluate three novel single-step extractive-transesterification methods: 1) microwave irradiation with ethanol as solvent/reactant; 2) microwave irradiation with ethanol as reactant and hexane as solvent and 3) ultrasound irradiation with ethanol as solvent/reactant, all catalyzed by sodium hydroxide catalyst. The three novel methods were compared with the conventional Bligh and Dyer method which followed a two-step extraction and transesterification process. The maximum lipid yields for microwave, microwave with hexane, ultrasound, and Bligh and Dyer …

An Assessment Of Human Vulnerability To Prolonged Cold In The Zeravshan Valley Of Tajikistan, R Bryson Touchstone

Theses and Dissertations

The Central Asian country of Tajikistan is the poorest of the former Soviet republics; it is also prone to a plethora of natural hazards including mass wasting, flood, and extreme temperature. This thesis seeks to characterize how vulnerable rural Tajik mountain communities are to prolonged cold. The primary focus was in Navobod, in the Zeravshan Valley of Tajikistan, where semi-structured interviews were conducted with 31 households, the village leader and doctor, and school staff. The results from the interviews were compared with GIS analysis of the region. Interviews indicated that the area is highly vulnerable to the impacts of prolonged …

Analysis Of Humeral And Femoral Cross-Sectional Properties At Morton Shell Mound (16ib3), Sarah Marie Zaleski

Theses and Dissertations

Using the concept of bone functional adaptation, this study analyzes femoral and humeral cross-sectional properties of human skeletal materials from Morton Shell Mound on the Louisiana coast. This work helps fill a gap in such analyses in the southern U.S. and contributes to an understanding of the functional adaptation of the human skeleton. Properties were compared to those of other prehistoric Southeastern fisher-hunter-gatherers from Gold Mine, Plash Island, and several Georgia coast sites to assess mobility and activity patterns among inland and coastal groups. Less sexual dimorphism of femoral midshaft shape among coastal Morton and Plash, compared to inland Gold …

Analyzing The Impact Of A Hub And Spoke Supply Chain Design For Long-Haul, High-Volume Transportation Of Densified Biomass, Md. Sadekuzzaman Roni

Theses and Dissertations

This dissertation proposes a framework in support of biomass supply chain network design. This framework relies in the use of trucks for short distance biomass transportation, and relies in the use of rail for long-haul, and high-volume transportation of densified biomass. A hub and spoke network design model is proposed for the case when biomass is shipped by rail. These models are created and solved for the following problems: 1) designing a biomass supply chain to deliver densified biomass to a coal fired power plant for coiring and 2) designing biomass-to-biorefinery supply chain using rail for long-haul, and high-volume shipment …

System Dynamics Simulation Model Of Salmonella Contamination Of Broiler Carcasses In The Chill Tank Of A Poultry Processing Plant, Karen Dazo Galarneau

Theses and Dissertations

Salmonella has been studied and researched for more than a hundred years and yet it remains a problem for human and animal health. The goal of this dissertation was to apply the systems thinking approach to Salmonella contamination and develop a System Dynamics (SD) simulation model for Salmonella contamination in the chill tank of a poultry processing plant. But first the appropriate carcass rinse sampling method that would not impact on the resulting Salmonella contamination status of the broiler carcass was studied. Kappa agreement analysis was used to evaluate three sampling methods. The adjacent rinse method was found to be …

Evaluation Of Producing Sand-Based Sod On A Fine-Textured Native Soil Using Transported Sand, John David Vanderford

Theses and Dissertations

Turfgrass establishment on sand-based rootzones is routinely accomplished by using sod produced on a fine-textured native soil. As a result, soil layering occurs, potentially causing initial reduction in water infiltration, rooting, aeration, and overall turfgrass quality. This research was aimed at determining the feasibility of applying sand over existing native soil to produce hybrid bermudagrass (Cynodon dactylon [L.] Pers. x C. transvaalensis Burtt-Davy) sand-based sod. Factors evaluated were visual quality and scalping. Treatments were harvested and transplanted to a sand-based research green where handle-ability, tensile strength, and infiltration were also evaluated. Results indicate aerify and topdress treatments showed higher quality …

Integration And Mental Health Care, Rick Van Den Pol, Marilyn Zimmerman

Rural Health Workshop

No abstract provided.

Establishing Healthy Lifestyles In Rural Settings, Kathy Humphries

Rural Health Workshop

No abstract provided.

Home Is Always Calling: Determinants Of Civic Participation Among Zimbabwean Immigrants In Cape Town, South Africa, Rumbidzai R. Mufuka

Open Access Dissertations

This research project examines factors that have influenced community engagement among immigrants from Zimbabwe living in Cape Town, South Africa. A case study of PASSOP (an immigrant rights organization in Cape Town) tests existing theories on civic participation through interviews with immigrants, knowledgeable informants and activists. The study identifies reasons for leaving Zimbabwe and legal status in South Africa as factors that influence why undocumented immigrants participate in or withdraw from civil society in Cape Town. The results indicate that the conditions of the country of origin and the related reasons for leaving—political and economic degradation in Zimbabwe—heavily influence the …

Lightweight Moral Realism: Objectivity And Reasoning Without Heavyweight Facts, Mark Douglas Warren

Open Access Dissertations

In this dissertation, I develop a non-representational approach to metaethics that avoids the ontological and epistemic problems that traditional realist views face: accounting for the nature of moral facts and our knowledge of these facts in a way that comports with naturalism. According to expressivism—the most popular non-representational account in contemporary metaethics—moral claims don’t aim to represent moral facts or properties, but instead function to express our non-cognitive attitudes like approval or disapproval. This is a promising approach, but the view has substantial difficulties accounting for important features of moral discourse, like objectivity and complicated moral reasoning. I develop an …

A Study Of Internal Solitary Waves In Satellite Images Of The Mid-Atlantic Bight, Jingshuang Xue

Open Access Dissertations

Satellite imagery has been widely used to study internal solitary wave (ISW) generation mechanisms, evolution, and properties. The Nonlinear Internal Wave Initiative/Shallow Water 2006 (SW06) experiment in the Mid-Atlantic Bight (MAB) provided a unique dataset to study the vertical structure from their surface manifestation in the images, which can improve our understanding of ISW evolution, energy dissipation, and mixing processes. This thesis has two parts. First, the applicability of various weakly nonlinear theories including the Korteweg-de Vries (KdV), Intermediate Long Wave (ILW), Benjamin-Ono (BO), and higher-order KdV models is tested to describe large amplitude ISWs in the MAB. Based on …

“We Found Ourselves”—Music And Identity Among The Chinese American Diaspora In Miami, Yiyu Zhang

Open Access Theses

Chinese American communities have been part of the United States since the 19th century. Presently, their high rates of immigration have made them one of this country’s fastest growing communities. However, in Miami, only 0.3% of the population are Chinese Americans. In this local setting, music serves, in the words of Su Zheng, as an important “signifier that produces complex cultural meanings.” Because traditional music forms one of the most significant aspects of music in China, it is critical to explore the extent to which Chinese American musical culture has developed and changed. This thesis discusses the function of Chinese …

An Exploratory Study: The Use Of Privately Owned Vessels As Mobile Research Platforms, Brittany L. Stockman

Open Access Theses

Due to limited public funding for scientific studies and data collection, private sector entities increasingly fill the gap by facilitating research inquiries. Specifically, coastal, oceanic and marine conservation nonprofit organizations (NPOs) play a direct role in research by both funding and orchestrating research missions across the globe. Through the examination of existing organizations and vessels involved in such efforts, this study examined the practicality of a NPO managed program that provides marine scientists with suitable mobile research platforms and evaluated the overall benefits of such a program on the ocean research community. One such organization, the International SeaKeepers Society (SeaKeepers), …

Mangrove Mitigation: A Case Study Of The Cocoplum Development, A History Of Land Use Changes And Trends In Mitigation Efforts, Stephanie J. Chaston

Open Access Theses

The residential community of the Islands of Cocoplum is located in Coral Gables, Florida along Biscayne Bay. It has served as a case study for mangrove mitigation techniques employed by Miami-Dade County's Regulatory and Economic Resources (RER) Coastal Resources division as a way of combating mangrove destruction. A database was created using Microsoft Excel and ArcGIS to identify and map all Class I coastal construction permits and mangrove violations since the onset of the Cocoplum Development in the 1980's through 2011. By identifying the mitigation strategies used by the County, it can be determined if mangrove mitigation effort has lessened, …

Prescribed Reading: December 2013, Centracare Clinic

Prescribed Reading

• Holiday greetings!
• Recognition for years of service
• Kudos to . . .
• CentraCare launches automated reminders
• CentraCare Urgency Center to open Jan. 20
• Welcome to these new providers
• Welcome to our new employees
• L.I.F.E. Program starts Jan. 7
• Employee Self Service is coming soon!
• Year-end reminders for employees
• Change for the 2014 Medical Expense
• 2014 CentraCare Plan Change Highlights
• Biometric Questions/Answers
• Wellness Reward Points Program
• Sign up for personal training sessions
• New MyChart features available
• Organize your care with MyChart features
• Are you planning international travel?

Privacy And Cloud Computing In Public Schools, Joel Reidenberg, N. Cameron Russell, Jordan Kovnot, Thomas B. Norton, Ryan Cloutier, Daniela Alvarado

Center on Law and Information Policy

Today, data driven decision-making is at the center of educational policy debates in the United States. School districts are increasingly turning to rapidly evolving technologies and cloud computing to satisfy their educational objectives and take advantage of new opportunities for cost savings, flexibility, and always-available service among others. As public schools in the United States rapidly adopt cloud-computing services, and consequently transfer increasing quantities of student information to third-party providers, privacy issues become more salient and contentious. The protection of student privacy in the context of cloud computing is generally unknown both to the public and to policy-makers. This study …

Volume 49 - Issue 10 - Friday, December 13, 2013, Rose Thorn Staff

The Rose Thorn Archive

The Rose Thorn, Rose-Hulman's independent student newspaper.

Genetic Analysis Of The Replication Protein A Large Subunit Family In Arabidopsis Reveals Unique And Overlapping Roles In Dna Repair, Meiosis And Dna Replication, Behailu B. Aklilu, Ryan S. Soderquist, Kevin M. Culligan

New Hampshire Agricultural Experiment Station Publications

Replication Protein A (RPA) is a heterotrimeric protein complex that binds single-stranded DNA. In plants, multiple genes encode the three RPA subunits (RPA1, RPA2 and RPA3), including five RPA1-like genes in Arabidopsis. Phylogenetic analysis suggests two distinct groups composed of RPA1A, RPA1C, RPA1E (ACE group) and RPA1B, RPA1D (BD group). ACE-group members are transcriptionally induced by ionizing radiation, while BD-group members show higher basal transcription and are not induced by ionizing radiation. Analysis of rpa1 T-DNA insertion mutants demonstrates that although each mutant line is likely null, all mutant lines are viable and display normal vegetative growth. The rpa1c and …

Cellular Roles Of Dna Polymerase Beta, Sreerupa Ray, Miriam-Rose Menezes, Ali Senejani, Joann Balazs Sweasy

Biology and Environmental Science Faculty Publications

Since its discovery and purification in 1971, DNA polymerase ß (Pol ߆) is one of the most well-studied DNA polymerases. Pol ß is a key enzyme in the base excision repair (BER) pathway that functions in gap filling DNA synthesis subsequent to the excision of damaged DNA bases. A major focus of our studies is on the cellular roles of Pol ß. We have shown that germline and tumor-associated variants of Pol ß catalyze aberrant BER that leads to genomic instability and cellular transformation. Our studies suggest that Pol ß is critical for the maintenance of genomic stability and that …

Physics 2710 – Example Exam Iii, David Peak

Exams

No abstract provided.

Mid-Latiude Rayleigh-Mie-Raman Lidar For Observations From 15 To 120 Km, Vincent B. Wickwar, Leda Sox, Joshua P. Herron, Matthew T. Emerick

Posters

Rayleigh lidar opened a portion of the atmosphere, from 30 to 90 km, to ground-based observations. Rayleigh-scatter observations were made at the Atmospheric Lidar Observatory (ALO) at Utah State University (USU) from 1993–2004 between 45 and 90 km. The lidar consisted of a 0.44-m diameter mirror, a frequency-doubled Nd:YAG laser opera'ng at 532-nm at 30- Hz at either 18- or 24-W, giving power- aperture products (PAPs) of 2.7- or 3.6- Wm2, respec'vely, and one detector channel. An example of what was accomplished with this system is shown as part of Fig. 1. The temperature climatology was based on ~5000 hours …

Domestic Genocide, Ivan Kilgore

Writing Beyond the Prison Living Archive

Test

Agenda And Minutes, University Of South Florida St. Petersburg General Education Committee Meeting, December 13, 2013, University Of South Florida St. Petersburg. Faculty Senate. General Education Committee

USF St. Petersburg General Education Committee Meetings

Agenda and minutes from the December 13, 2013, meeting of the General Education Committee of the University of South Florida St. Petersburg's Faculty Senate.

Corporate Social Responsibility And Its Effects On Corporate-Community Relationships: A Case Study Of Chevron's Richmond Refinery Fire In 2012, Afshan Khan

Master's Projects and Capstones

Corporate Social Responsibility (CSR) is a practical and strategic implementation process corporations often use to build social trust with the communities they serve. This process of developing social trust, according to Francis Fukuyama, creates conditions for corporations and communities to deepen their investments in each other, thus increasing the probability of economic prosperity. By seeking to balance social, environmental, and economic imperatives, corporations seeks to create a lasting, sustainable relationship with the communities they partner with. CSRs are not merely about re-branding and impression management, for they are about establishing a healthy, trusting relationship with the customers that corporations identify …

Partisanship And Opportunities For Additional Bipartisanship In Tech Immigration And Privacy Reform, Arielle E. Segal

Master's Projects and Capstones

This paper explores the history of technology and government by analyzing the longstanding partisan advantage Democrats have had in the Silicon Valley and other tech hubs. Additionally, this paper seeks out opportunities for bipartisanship, specifically in the legislative realms of tech privacy and immigration reform. Constituencies, committee assignments, fundraising and other environmental factors can help determine a politician's level of interest in tech issues. Specifically, upon analyzing these factors, bipartisanship appears to be more likely in privacy reform than in immigration reform.

Chiral Plasmonic Dna Nanostructures With Switchable Circular Dichroism, Ngoc Luong, Bernard Yurke, Wan Kuang

Electrical and Computer Engineering Faculty Publications and Presentations

Circular dichroism spectra of naturally occurring molecules and also of synthetic chiral arrangements of plasmonic particles often exhibit characteristic bisignate shapes. Such spectra consist of peaks next to dips (or vice versa) and result from the superposition of signals originating from many individual chiral objects oriented randomly in solution. Here we show that by first aligning and then toggling the orientation of DNA-origami-scaffolded nanoparticle helices attached to a substrate, we are able to reversibly switch the optical response between two distinct circular dichroism spectra corresponding to either perpendicular or parallel helix orientation with respect to the light beam. The observed …

Hydraulic Fracturing: Restoring Public Health And Safety As A Top Priority, Brian Barnes

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Hydraulic Fracturing: Restoring Public Health and Safety as a Top Priority

Tar Sands, Americas Drug Of Choice, James Cope

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Tar Sands, Americas Drug of Choice

Dirty Power, Or A Dirty Word?, Kyle Chapo

Op-Eds from ENSC230 Energy and the Environment: Economics and Policies

Dirty Power, or a Dirty Word?