Physical Sciences and Mathematics Commons^™

Virginia Game Fish Tagging Program Annual Report 2007, John A. Lucy, Lewis Gillingham

Reports

Initiated in 1995, the Virginia Game Fish Tagging Program (VGFTP) database is comprised of tagged fish records, and corresponding recaptured fish records. These records are primarily generated through contributed efforts of a dedicated corps of trained marine anglers targeting only a select number of target species. The recaptured fish records are the result of observant individuals noticing the tags in live or freshly-boxed/shipped fish. Recapture reports originate from a mix of sources, including marine anglers, commercial fishers, workers in fish packinghouses, wholesale and retail sellers of fish, and NOAA Fisheries observers on coastal trawl boats.

Assessing Stakeholder Preferences For Chesapeake Bay Restoration Options : A Stated Preference Discrete Choice-Based Assessment, Rob Hicks, James Kirkley, Kenneth Mcconnell, Winifred Ryan, Tara Scott, Ivar Strand

Reports

Chesapeake 2000 or C2K is a multi-jurisdictional agreement between the states of Virginia, Maryland, Pennsylvania, the District of Columbia, the Chesapeake Bay Commission and the U.S. Environmental Protection Agency, representing the federal government, to restore the health of the Chesapeake Bay’s ecosystem. This agreement commits the participants to achieve five major restoration goals, 22 sub-objectives or categories, and 102 specific commitments or restoration activities. The five major goals are the following: (1) restore and protect natural living resources; (2) restore and protect vital habitat; (3) restore and protect water quality; (4) promote sound land use; and (5) promote stewardship and …

Effect Of Low Concentration Salt On Organic Contact Angle In Ionic Surfactant Solutions: Insight From Theory And Experiment, Samuel Morton, D. Keffer, A. Davis, R. Counce

Samuel A Morton

No abstract provided.

Cracking And Crumbling: Exploring Mechanisms Of Dike Emplacement, Teaching Structural Geology In The 21st Century, Resources For Teaching Structural Geology, Phillip Resor

Phillip G Resor

No abstract provided.

'Partial Derivatives: Are You Kidding?': Teaching Thermodynamics Using Virtual Substance, Chrystal Bruce, Carribeth Bliem, John Papanikolas

Chrystal D. Bruce

No abstract provided.

Effect Of Electrolyte Concentration On Surfactant Adsorption To At Qcm Immersed In Surfactant + Electrolyte Solutions, S. Ray, R. Counce, Samuel Morton

Samuel A Morton

No abstract provided.

Mobile Instructional Laboratory Environments And Their Use In Computing Sciences, Stefan Robila, Bert Wachsmuth, Christelle Scharff, Jeffrey Popyack

Bert Wachsmuth

The term 'mobile instructional laboratory' refers to using mobile computing devices such as notebooks for transforming a classroom into a lab setting with the goal of enhancing the practical experience, interaction and understanding. A major goal in all the computing disciplines is to provide students with hands on activities that will enhance their learning of concepts and their professional experience. As such, CS and IT programs require investments in dedicated laboratories that will support applied activities for most of the courses. Unfortunately, space and other resource limitations usually do not allow for permanent creation of such labs. In parallel, current …

Solution-Processed Trilayer Inorganic Dielectric For High Performance Flexible Organic Field Effect Transistors, Hs Tan, Sr Kulkarni, T Cahyadi, Ps Lee, Sg Mhaisalkar, J Kasim, Zx Shen, F.R. Zhu

Professor ZHU, Fu Rong

No abstract provided.

An Sla-Based Auction Pricing Method Supporting Web Services Provisioning, Jia Zhang, Ning Zhang, Liang-Jie Zhang

Jia Zhang

No abstract provided.

Single-Cell Printing To Form Three-Dimensional Lines Of Olfactory Ensheathing Cells, Christina Othon, Xingjia Wu, Juanita Anders, Bradley Ringeisen

Christina M Othon

Biological laser printing (BioLP™) is a unique tool capable of printing high resolution two- and three-dimensional patterns of living mammalian cells, with greater than 95% viability. These results have been extended to primary cultured olfactory ensheathing cells (OECs), harvested from adult Sprague-Dawley rats. OECs have been found to provide stimulating environments for neurite outgrowth in spinal cord injury models. BioLP is unique in that small load volumes (~µLs) are required to achieve printing, enabling low numbers of OECs to be harvested, concentrated and printed. BioLP was used to form several 8 mm lines of OECs throughout a multilayer hydrogel scaffold. …

Programmatic Assessment Of Mathematical Content Knowledge For Teaching, Shannon Driskell, G. Keen

Shannon O.S. Driskell

Driskell, S. (Co-PI), & Keen, G. (Co-PI), WeEXCEL (West Ohio Center of Excellence for Science and Mathematics Education) Mini-Grant, $9,000 Year: 2008

Engaging Individuals In Climate Change Mitigation, John Dernbach

John C. Dernbach

No abstract provided.

Multinomial Logistic Regression: An Application To Estimating Performance Of A Multiple Screening Test For Bowel Cancer When Negatives Are Unverified., Chris Lloyd, Don Frommer

Chris J. Lloyd

This paper describes a method of estimating the performance of a multiple screening test where those who test negative do not have their true disease status determined. The methodology is motivated by a dataset on 49,927 subjects who were given K=6 binary tests for bowel cancer. A complicating factor is that individuals may have polyps present in the bowel, a condition that the screening test is not designed to detect but which may be worth diagnosing. The methodology is based on a multinomial logit model for Pr(S|R_6), the probability distribution of patient status S (healthy, polyps or diseased) conditional on …

Investigation Of Ionic Liquids For The Separation Of Butanol And Water, S. Davis, Samuel Morton

Samuel A Morton

No abstract provided.

Enumeration Schemes For Words Avoiding Patterns With Repeated Letters, Lara Pudwell

Lara K. Pudwell

No abstract provided.

Brain Bases Of Individual Differences In Cognition, Chantel Prat, Marcel Just

Marcel Adam Just

No abstract provided.

A Decrease In Brain Activation Associated With Driving When Listening To Someone Speak, Marcel Just, Timothy Keller, Jacquelyn Cynkar

Marcel Adam Just

No abstract provided.

Generating Shape Invariant Potentials, Asim Gangopadhyaya

Asim Gangopadhyaya

Highly Fluorous Bidentate Phosphines, Brad Berven, George Koutsantonis

Brad Berven

The reaction of tetrachlorodiphosphines [Cl2P(CH2)nPCl2; n = 2-4] with fluorous aromatic precursors 4-bromo(perfluorohexyl)benzene and 4-(perfluorohexyl)phenol gave a series of fluorous-tagged diphosphines [(p-C6F13C6H4)2P(CH2)nP(C6H4C6F13-p)2; n = 2-4] and a new diphosphonite [(p-C6F13C6H4O)2P(CH2)3P(OC6H4C6F13-p)2]. The improved synthesis of 1,3-bis(dichlorophosphino)propane (dcpp), involved the facile chlorination of the corresponding primary phosphine with triphosgene. Fluorinated diimines RN=C(CH3)C(CH3)=NR, where R = p-C6H4C6F13 or p-C6H4C8F17 have also been prepared, and were found to be air-stable alternatives to the highly air-sensitive phosphorus-containing ligands. All compounds were characterised by a variety of techniques including NMR, IR, MS and microanalysis. The successful reduction of the phosphine-oxides [(p-C6F13C6H4)2P(O)(CH2)nP(O)(C6H4C6F13-p)2; n = 2,3] with phenylsilane …

Evolution Of Higher-Order Gray Hirota Solitary Waves, Tim Marchant

Tim Marchant

The defocusing Hirota equation has dark and gray soliton solutions which are stable on a background of periodic waves of constant amplitude. In this paper, gray solitary wave evolution for a higher-order defocusing Hirota equation is examined. A direct analysis is used to identify families of higher-order gray Hirota solitary waves, which are embedded for certain parameter values. Soliton perturbation theory is used to detmine the detailed behavior of an evolving higher-order gray Hirota solitary wave. An integral expression for the first-order correction to the wave is found and analytical expressions for the steady-state and transient components of the solitary …

Effect Of Statins On Serum Apolipoprotein J And Paraoxonase-1 Levels In Patients With Ischemic Heart Disease Undergoing Coronary Angiography, Mark Wilson, Dimitri Mikhailidis, Maria Poulakou, Despina Perrea, Kosmas Paraskevas, Dimitrios Iliopoulos, Serafim Tsitsilonis, Ioannis Vlachos, Sonia-Athena Karabina

Mark R Wilson

No abstract provided.

Carotenoid Intake Does Not Mediate A Relationship Between Reactive Oxygen Species And Bright Colouration: Experimental Test In A Lizard, Mark Wilson, Mats Olsson, Tobias Uller, Caroline Isaksson, Beth Mott

Mark R Wilson

No abstract provided.

Free Radicals Run In Lizard Families, Mark Wilson, Mats Olsson, Tobias Uller, Caroline Isaksson, Beth Mott, Mo Healey, Wanger Thomas

Mark R Wilson

No abstract provided.

Mathematical Modelling Of Nematicons And Their Interactions, Prof. Tim Marchant

Tim Marchant

The mathematical modelling of guided wave (nematicon) propagation in liquid crystals is considered. Model equations are derived based on suitable trial functions in an averaged Lagrangian. These equations are used to model nematicon interactions.

Undular Bores And The Initial-Boundary Value Problem For The Modified Korteweg-De Vries Equation, Tim Marchant

Tim Marchant

Two types of analytical undular bore solutions, of the initial value problem for the modified Korteweg-de Vries (mKdV), are found. The first, an undular bore composed of cnoidal waves, is qualitatively similar to the bore found for the KdV equation, with solitons occurring at the leading edge and small amplitude linear waves occurring at the trailing edge. The second, a newly identified type of undular bore, consists of finite amplitude sinusiodal waves, which have a rational form. At the leading edge is the mKdV algebraic soliton, while, again, small amplitude linear waves occur at the trailing edge. The initial-boundary value …

Platform Technology For Dienone And Phenol–Formaldehyde Architectures, Ram Mohan, Marilena Giarrusso, Luke Higham, Ulf Kreher, Anthony Rosamilia, Janet Scott, Christopher Strauss

Ram S. Mohan

Claisen–Schmidt condensations, yielding only water as a by-product, performed on building blocks serving as shape-selective male or female terminals and unions, enable the preparation of diverse molecular structures including novel linear rods and semi-elliptical, rectangular or trapezoidal macrocycles. Isoaromatization affords a corresponding range of phenol-formaldehyde derivatives, in atom economical reactions.

Collisionless Shock Resolution In Nematic Liquid Crystals, Tim Marchant

Tim Marchant

The diffractive resolution on a collisionless shock formed along the spatial profile of a beam in a nematic liquid crystal is considered, this material being an example of a self-focusing, nonlocal medium. It is found that the shock is resolved through the formation of an undular bore structure which persists for experimentally relevant propagation distances due to nonlocality delaying the onset of modulational instability. Both 1+1 and 2+1 dimensional bores with circular symmetry are considered (termed line and circular bores, respectively). A semianalytical solution is developed for the line undular bore, approximating it as a train of uniform solitary waves. …

Semi-Analytical Solutions For A Gray-Scott Reaction-Diffusion Cell With An Applied Electric Field, Tim Marchant

Tim Marchant

An ionic version of the Gray–Scott chemical reaction scheme is considered in a reaction–diffusion cell, with an applied electric field, which causes migration of the reactant and autocatalyst in a preferred direction. The Galerkin method is used to reduce the governing partial differential equations to an approximate model consisting of ordinary differential equations. This is accomplished by approximating the spatial structure of the reactant and autocatalyst concentrations. Bifurcation analysis of the semi-analytical model is performed by using singularity theory to analyse the static multiplicity and a stability analysis to determine the dynamic multiplicity. The application of the electric field causes …

Environmentally Friendly Organic Synthesis Using Bismuth Compounds. Bismuth Trifluoromethanesulfonate-Catalyzed Allylation Of Dioxolanes, Ram Mohan, Matthew Spaffpord, James Christensen, Matthew Huddle, Joshua Lacey

Ram S. Mohan

A bismuth trifluoromethanesulfonate (triflate)-catalyzed (2.0 mol-%) multicomponent reaction involving the allylation of dioxolanes followed by in situ derivatization with anhydrides to generate highly functionalized esters has been developed under solvent-free conditions. Most reagents used to date for allylation of dioxolanes are highly corrosive and are often required in stoichiometric amounts. In contrast, the use of a relatively non-toxic and non-corrosive bismuth(iii)-based catalyst makes this methodology especially attractive for scale-up.

Waves Initiative Within Seacoos, George Voulgaris, Brian Haus, Paul Work, Lynn Shay, Harvey Seim, Robert Weisberg, James Nelson

George Voulgaris

Amongst other ocean state parameters, the development of a wave measurement program was supported as part of the Southeast U.S. Atlantic Coastal Ocean Observing System (SEACOOS). The program focused on supporting nearshore wave measurements using both cabled and autonomous systems but also examined the feasibility of using HF Radar systems for remote estimation of wave parameters. The nearshore stations have provided a significant database on directional wave climate for a number of nearshore locations in the region that provide valuable information to coastal engineers and managers for sustainable development along the coast of the southeastern United States. The ability of …