Physical Sciences and Mathematics Commons^™

A Geotechnical Evaluation Of Chesapeake Beach Shoal For Beach Quality Sand, Donna A. Milligan, C. Scott Hardaway Jr., Mary C. Cox, Christine A. Wilcox

Reports

Chesapeake Beach Shoal is located along the southern coast of Chesapeake Bay in Virginia Beach, Virginia (Figure 1-1). Chesapeake Beach, which is nearly adjacent, has a history of chronic beach erosion which threatens upland infrastructure. Beach nourishment occurs on Ocean Park Beach to the east from intermittent dredging of Lynnhaven Inlet (Figure 1-2), but the effects do not always translate westward to Chesapeake Beach. The general alongshore sand movement is east to west. The purpose of this project is to establish a reliable source of beach sand for Chesapeake Beach via the nearshore shoal. Many issues, including identifying the location …

Stability And Classification Performance Of Feature Selection Techniques, Huanjing Wang, Taghi Khoshgoftaar, Qianhui Liang

Computer Science Faculty Publications

Feature selection techniques can be evaluated based on either model performance or the stability (robustness) of the technique. The ideal situation is to choose a feature selec- tion technique that is robust to change, while also ensuring that models built with the selected features perform well. One domain where feature selection is especially important is software defect prediction, where large numbers of met- rics collected from previous software projects are used to help engineers focus their efforts on the most faulty mod- ules. This study presents a comprehensive empirical ex- amination of seven filter-based feature ranking techniques (rankers) applied to …

Front Matter

The Synapse: Intercollegiate science magazine

No abstract provided.

Alohamora! Unlocking Magic With The Wonders Of Science, Anna Dardick

The Synapse: Intercollegiate science magazine

No abstract provided.

Issue 0

The Synapse: Intercollegiate science magazine

No abstract provided.

In Search Of Shell Space: A Look At A Unique Sea Turtle Nesting Behavior, Mia Dawson

The Synapse: Intercollegiate science magazine

No abstract provided.

To The Brink Of Understanding, Isaac H. Mcceery

The Synapse: Intercollegiate science magazine

No abstract provided.

So That They May Model, Isaac H. Mcceery

The Synapse: Intercollegiate science magazine

No abstract provided.

This Is Your Brain On Acetylcholine, Ksenia Vlasov

The Synapse: Intercollegiate science magazine

No abstract provided.

Kinship Between The Kingdoms: Horizontal Gene Transfer, Darrin Schultz, Ben Garfinkel

The Synapse: Intercollegiate science magazine

No abstract provided.

The Short-Term Effects Of Cortisol

The Synapse: Intercollegiate science magazine

No abstract provided.

Its About (Geological) Time, Paris Achenbach

The Synapse: Intercollegiate science magazine

No abstract provided.

Medicine Through The Ages: An Incision Into Surgery's Beginnings, Anna Dardick

The Synapse: Intercollegiate science magazine

No abstract provided.

What Are Friends For?: The Importance Of Friend Groups In Academic Success, Emily Neuhoff

The Synapse: Intercollegiate science magazine

No abstract provided.

Mike Got A Bigger Bike: Mike Rauscher On Nuclear Space Travel, Quinton Steele

The Synapse: Intercollegiate science magazine

No abstract provided.

Jay Meijia On Bipolar Disorder, Hillary Mulan

The Synapse: Intercollegiate science magazine

No abstract provided.

Honors Research, Matt Hartsock, Sam Asinof, Sage Aronson, Yuhua Lu

The Synapse: Intercollegiate science magazine

No abstract provided.

Prevention Of Iron- And Copper-Mediated Oxidative Dna Damage By Neurotransmmitters And Related Compounds: Evidence For Metal Binding As An Antioxidant Mechanism, Carla Garcia

All Theses

An array of health concerns have been attributed to oxidative DNA damage from the hydroxyl radical (*OH), and the presence of the most biologically available metals iron and copper perpetuate the production of this radical through the Fenton and Fenton-like reactions, respectively. The concentrations at which flavonol and polyphenol antioxidants prevent 50% of DNA damage (IC50) were measured using gel electrophoresis assays upon Fe(II)/H2O2- and Cu(I)/H2O2-mediated DNA damage (Chapter 2). Results show that catechol- and gallol-containing antioxidants differ greatly in preventing DNA damage by Cu(I)/H2O2, compared to Fe(II)/H2O2, behavior that was explained using electron paramagnetic resonance spectroscopy. Semiquinone and other …

Develop Energy Dashboard For Real-Time Campus Energy Use Monitoring, Hsui-Lin Winkler, Charlene Hoegler, William Batina

Cornerstone 3 Reports : Interdisciplinary Informatics

No abstract provided.

Quantum Many-Body Calculation Of Mixed-Parity Pairing In The Sr2ruo4 Superconductor Induced By Spin-Orbit Coupling, J. J. Deisz, Tim Kidd

Faculty Publications

The unusual superconducting state in Sr₂RuO₄ has long been viewed as being analogous to a superfluid state in liquid ³He. Nevertheless, calculations based on this odd-parity state are presently unable to completely reconcile the properties of Sr₂RuO₄. Using a self-consistent quantum many-body scheme that employs realistic parameters, we are able to model several signature properties of the normal and superconducting states of Sr₂RuO₄. We find that the dominant component of the model superconducting state is of even parity and closely related to superconducting state for the high-T_{c …}

Lake Water Quality, Recreation, & Restoration: The Importance Of Stakeholder Involvement, Biran Gedlinske, Wade Kooiman, Katie Olsen

Other Faculty and Staff Publications

Historically, Iowa’s lakes have been plagued with numerous water quality problems including excessive siltation, nutrients, pesticides, and bacterial contamination. Iowa places a heavy reliance on voluntary efforts to address these problems, largely in the form of best management practices (BMPs). Studies have shown that BMPs can improve lake water quality and, in turn, increase recreational activity and visitor spending. In recognition of the potential economic, recreational, and social benefits of improved lake water quality, the Iowa Department of Natural Resources (IDNR) secured significant legislative funding in 2006 to initiate a state-wide lake restoration program (LRP).

LRP case studies are presented …

Synthesis And Characterization Of Acceptor: Donor Block Copolymers For Organic Photovoltaics, Brandon Cory Achord

Dissertations

Mankind needs sources of clean power. Photovoltaic (PV) cells, in use since 1839, have proven reliable and practical for certain applications. PV cell efficiency has changed over the years from 1-2% to ultra-high efficiency cells operating at efficiencies greater than 40%. Organic photovoltaics are a potential transformative technology platform. The potential for cell use, efficiency and cost are all parts of the research and development focus at the time this document was written. This research was initiated with a focus on the synthesis and understanding of the variables effecting acceptor-donor block copolymer. The self-assembled morphology resulting from varying volume ratios …

Physical And Electrical Properties Of Trimetallic Nitride Template Endohedral Metallofullerenes And Their Polymer Nanocomposites, Hanaa Mohammed Ahmed

Dissertations

The main objective of this study was characterization of pure metallic nitride fullerene, MNF, and MNF containing polymers to evaluate these materials as suitable devices for tunable applications. Polymer-fullerene nanocomposites consisting of linear polyurethane (PU) segments crosslinked via polyhydroxylated fullerenes (C₆₀ and Sc₃N@C₈₀, a metallic nitride fullerene) were prepared and characterized for their mechanical and dielectric properties using dynamic mechanical analysis (DMA) and broadband dielectric spectroscopic techniques. Polyhydroxylated fullerenes C₆₀(OH)₂₉ and Sc₃N@C₈₀(OH)₁₈ were synthesized in a high yield through a solid-state high sheer ball-milling procedure and were …

Development And Utilization Of Digital Image Correlation Techniques For The Study Of Structural Isomerism Effects On Strain Development In Epoxy Network Glasses, Stephen Robert Heinz

Dissertations

The specific aim of this dissertation is to present the findings regarding the effects of molecular structure on macroscopic mechanical performance and strain development in epoxy networks. Network molecular structure was altered through monomer isomerism and crosslink density/molecular weight between crosslinks. The use of structural isomerism provided a pathway for altering mechanical performance while maintaining identical chemical composition within the network. Isomerism was investigated primarily by the curing of diglycidyl ether of bisphenol A (DGEBA) using either the para- or meta-substituted derivatives of diaminodiphenyl sulfone (DDS). Additional insights into isomerism were gained through the investigation of networks composed of either …

A Search For And Characterization Of Young Stellar Objects In N206, An H Ii Complex In The Large Magellanic Cloud, Tabitha Christi Buehler

Theses and Dissertations

I have identified 51 young stellar object candidates in N206, an H II complex in the nearby Large Magellanic Cloud galaxy. Using archival images from the Spitzer Space Telescope, supplemented with other infrared and optical images, I located point sources in this region. I distinguished possible young stellar objects based on their spectral energy distributions, morphologies, and locations in color-magnitude space. I classified the young stellar object candidates based on their likelihood of being young stellar objects and based on their apparent evolutionary stages. The spatial distribution of these candidates in N206 indicates that star formation is being triggered …

Shock-Associated Noise Generation In Curved Turbulent Coanda Wall Jets, Caroline Lubert, R. Shafer

Caroline P Lubert

No abstract provided.

Ordering Of Glass Rods In Nematic And Cholesteric Liquid Crystals, A. T. Juhl, Deng-Ke Yang, V. P. Tondiglia, L. V. Natarajan, Timothy J. White, Timothy J. Bunning

Deng-Ke Yang

The orientational assembly of glass rods (3 x similar to 15 mu m) in nematic, twisted nematic, and cholesteric liquid crystal cells was observed and quantified with optical microscopy. At this size, the rods were affected strongly by gravity and sedimented to the bottom of the cells. Temporal visualization of the sedimentation process (induced by flipping the cell over) shed insight into the effect the liquid crystal order had on the glass rod orientation. For nematic and twisted nematic geometries, the glass rods were aligned parallel to the local director orientation. Control experiments indicate that the rod alignment is not …

Wiki Leaks Revelations In Global Context—The War Between ‘Right To Publish’ And ‘Ethical Code Of Conduct, Ratnesh Dwivedi Mr

Ratnesh Dwivedi

WikiLeaks is an international non-profit organisation that publishes submissions of private, secret, and classified media from anonymous news sources, news leaks, and whistleblowers. Its website, launched in 2006 under The Sunshine Press organisation claimed a database of more than 1.2 million documents within a year of its launch. WikiLeaks describes its founders as a mix of Chinese dissidents, journalists, mathematicians, and start-up company technologists from the United States, Taiwan, Europe, Australia, and South Africa. Julian Assange, an Australian Internet activist, is generally described as its director. The site was originally launched as a user-editable wiki, but has progressively moved towards …

Using Social Media To Build Community Disaster Resilience (Powerpoint), Neil Dufty

Neil Dufty

No abstract provided.

Examination Of The Total Flood Warning System In Victoria (Report), Neil Dufty

Neil Dufty

No abstract provided.