Physical Sciences and Mathematics | Open Access Articles

A Finite Element Method For Martingale-Driven Stochastic Partial Differential Equations, Andrea Barth

Communications on Stochastic Analysis

No abstract provided.

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Sample Properties Of Random Fields Iii: Differentiability, Jürgen Potthoff

Communications on Stochastic Analysis

No abstract provided.

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The Itô Integral For A Certain Class Of Lévy Processes And Its Application To Stochastic Partial Differential Equations, Erika Hausenblas

Communications on Stochastic Analysis

No abstract provided.

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Sufficient Conditions Of Optimality For Backward Stochastic Evolution Equations, Abdulrahman Al-Hussein

Communications on Stochastic Analysis

No abstract provided.

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Upper Bounds On Rubinstein Distances On Configuration Spaces And Applications, Laurent Decreusefond, Aldéric Joulin, Nicolas Savy

Communications on Stochastic Analysis

No abstract provided.

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Convergence Of Particle Filtering Method For Nonlinear Estimation Of Vortex Dynamics, Sivaguru S Sritharan, Meng Xu

Communications on Stochastic Analysis

No abstract provided.

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Zeons, Lattices Of Partitions, And Free Probability, René Schott, G Stacey Staples

Communications on Stochastic Analysis

No abstract provided.

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Surface Measures On The Dual Space Of The Schwartz Space, S Chaari, F Cipriano, H.-H. Kuo, H Ouerdiane

Communications on Stochastic Analysis

No abstract provided.

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Solutions Of Semilinear Wave Equation Via Stochastic Cascades, Yuri Bakhtin, Carl Mueller

Communications on Stochastic Analysis

No abstract provided.

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Roger Temam On The Occasion Of His 70th Birthday, Claude Michel Brauner, Danielle Hilhorst, Alain Miranville, Shouhong Wang, Xiaoming Wang

Mathematics and Statistics Faculty Research & Creative Works

No abstract provided.

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Sfa Weather Station-September 2010, Arthur Temple College Of Forestry And Agriculture, Stephen F. Austin State University

Weather Station Data

No abstract provided.

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Magnetoelectric Effects In Ferromagnetic Cobalt/Ferroelectric Copolymer Multilayer Films, Abhijit Mardana, Mengjun Bai, A. Baruth, Stephen Ducharme, Shireen Adenwalla

Stephen Ducharme Publications

Interactions between a ferromagnet, cobalt, and a ferroelectric copolymer, poly(vinylidene fluoride with trifluoroethylene) in thin film heterostructures result in a 5% change in the ferroelectric polarization on application of a perpendicular 6 kG magnetic field corresponding to a magnetoelectric coupling coefficient of α =5.45 V/cm Oe. The effect disappears on magnetic saturation, ruling out conventional strain coupling. A simple model posits that the ferroelectric film develops in-plane strain gradients, a consequence of the coupling to strain gradients present at the domain walls in the multidomain Co layer, resulting in the measured polarization change via the flexoelectric effect.

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Quiescent X-Ray Emission From Cen X-4: A Variable Thermal Component, Edward M. Cackett, Edward F. Brown, Jon M. Miller, Rudy Wijnands

Physics and Astronomy Faculty Research Publications

The nearby neutron star low-mass X-ray binary, Cen X-4, has been in a quiescent state since its last outburst in 1979. Typically, quiescent emission from these objects consists of thermal emission (presumably from the neutron star surface) with an additional hard power-law tail of unknown nature. Variability has been observed during quiescence in Cen X-4 on both timescales as short as hundreds of seconds and as long as years. However, the nature of this variability is still unknown. Early observations seemed to show it was all due to a variable hard X-ray tail. Here, we present new and archival observations …

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Relativistic Lines And Reflection From The Inner Accretion Disks Around Neutron Stars, Edward M. Cackett, Jon M. Miller, David R. Ballantyne, Didier Barret, Sudip Bhattacharyya, Martin Boutelier, M. Coleman Miller, Tod E. Strohmayer, Rudy Wijnands

Physics and Astronomy Faculty Research Publications

A number of neutron star low-mass X-ray binaries (LMXBs) have recently been discovered to show broad, asymmetric Fe K emission lines in their X-ray spectra. These lines are generally thought to be the most prominent part of a reflection spectrum, originating in the inner part of the accretion disk where strong relativistic effects can broaden emission lines. We present a comprehensive, systematic analysis of Suzaku and XMM-Newton spectra of 10 neutron star LMXBs, all of which display broad Fe K emission lines. Of the 10 sources, 4 are Z sources, 4 are atolls, and 2 are accreting millisecond X-ray pulsars …

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Determination Of Cyanide Exposure By Gas Chromatography–Mass Spectrometry Analysis Of Cyanide-Exposed Plasma Proteins, Stephanie L. Youso, Gary A. Rockwood, John A. Lee, Brian A. Logue

Chemistry and Biochemistry Faculty Publications

Exposure to cyanide can occur in a variety of ways, including exposure to smoke from cigarettes or fires, accidental exposure during industrial processes, and exposure from the use of cyanide as a poison or chemical warfare agent. Confirmation of cyanide exposure is difficult because, in vivo, cyanide quickly breaks down by a number of pathways, including the formation of both free and protein-bound thiocyanate. A simple method was developed to confirm cyanide exposure by extraction of protein-bound thiocyanate moieties from cyanide-exposed plasma proteins. Thiocyanate was successfully extracted and subsequently derivatized with pentafluorobenzyl bromide for GC–MS analysis. Thiocyanate levels as low …

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From The Editor, James Manasco

Sci-Tech News

No abstract provided.

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The Socio-Ethical Considerations Surrounding Government Mandated Location-Based Services During Emergencies: An Australian Case Study, Anas Aloudat, K. Michael

Associate Professor Katina Michael

The adoption of mobile technologies for emergency management has the capacity to save lives. In Australia in February 2009, the Victorian Bushfires claimed 173 lives, the worst peace-time disaster in the nation’s history. The Australian government responded swiftly to the tragedy by going to tender for mobile applications that could be used during emergencies, such as mobile alerts and location services. These applications have the ability to deliver personalized information direct to the citizen during crises, complementing traditional broadcasting mediums like television and radio. Indeed governments have a responsibility to their citizens to safeguard them against both natural and human-made …

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Enhancing Stockmarket Trading Performance With Anns, Bruce Vanstone, Gavin Finnie

Gavin Finnie

Artificial Neural Networks (ANNs) have been repeatedly and consistently applied to the domain of trading financial time series, with mixed results. Many researchers have developed their own techniques for both building and testing such ANNs, and this presents a difficulty when trying to learn lessons and compare results. In a previous paper, Vanstone and Finnie have outlined an empirical methodology for creating and testing ANNs for use within stockmarket trading systems. This paper demonstrates the use of their methodology, and creates and benchmarks a financially viable ANN-based trading system. Many researchers appear to fail at the final hurdles in their …

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Technische Dokumentation Des Dfg-Instrumentenkastens, Timo Wandhoefer, Nina Steinweg, York Sure

Timo Wandhoefer

Der DFG Instrumentenkasten (verfügbar unter http://www.instrumentenkasten.dfg.de/) ist ein Web-basiertes Informationssystem über Maßnahmen zur Erhöhung der Chancengleichheit in der Wissen-schaft. Der Instrumentenkasten bietet einen zielgerichteten Überblick über die Bandbreite von poten-ziellen Maßnahmen zur Verbesserung der Chancengleichheit und hilft Ihnen, deren Eignung für Ihre wissenschaftliche Einrichtung einzuschätzen. Zahlreiche Vergleichsmöglichkeiten anhand von Bei-spielen unterstützen Nutzerinnen und Nutzer bei dem Auswahlprozess zur Einführung von Gleichstel-lungsmaßnahmen, die zunehmend an Bedeutung gewinnen. Der Entwurf und die technische Umsetzung des DFG-Instrumentenkasten erfolgte durch das GESIS – Leibniz Institut für Sozialwissenschaften in Bonn (siehe http://www.gesis.org/).

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Health Benefits Of Increased Walking For Sedentary, Generally Healthy Older Adults: Using Longitudinal Data To Approximate An Intervention Trial, Paula Diehr

Paula Diehr

BACKGROUND: Older adults are often advised to walk more, but randomized trials have not conclusively established the benefits of walking in this age group. Typical analyses based on observational data may have biased results. Here, we propose a "limited-bias," more interpretable estimate of the health benefits to sedentary healthy older adults of walking more, using longitudinal data from the Cardiovascular Health Study. METHODS: The number of city blocks walked per week, collected annually, was classified as sedentary (<7 blocks per>week), somewhat active, or active (>or=28). Analysis was restricted to persons sedentary and healthy in the first 2 years. In Year …

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Strengthening Strategic Environmental Assessment In Canada: An Evaluation Of Three Basic Options, Robert Gibson, Hugh Benevides, Meinhard Doelle, Denis Kirchhoff

Denis Kirchhoff

Canada has a long and diverse but largely disappointing record in integrating environmental and sustainability considerations into the development of policies, plans, programs and other strategic undertakings. For over 25 years, the federal government has had a policy-based strategic environmental assessment (SEA) process. In 2003, the deficiencies of this process led the House of Commons Standing Committee on Environment and Sustainable Development to recommend establishment of a legislated framework for mandatory SEA before the 2010 Parliamentary review of environmental assessment. Governments since then have not acted on this recommendation but have promised to strengthen federal SEA. In this paper, we …

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Product Quality, Perceived Price And Product Features Analysis And Their Influences To Brand Image And Consumer Satisfaction

Homa. P. Harahap

Homa Posniroha Harahap, 2010; Product Quality, Perceived Price and Product Features Analysis and Their Influences to Brand Image and Consumer Satisfaction. Counsellor ; DR. Mohamad Rizan, SE., MM. Generally, the purpose of the research are: 1) Analyzing product quality, perceived price and product features and their influences to brand image and consumer satisfaction, 2) Testing hypothesis on relationship between product quality, perceived price and product features and their influences to brand image and consumer satisfaction,3) Testing hypothesis product quality, perceived price, product features and their direct influences or through brand image to consumer satisfaction. Unit of analysis are mobile phone …

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Energetyka Niskoemisyjna, Wojciech M. Budzianowski

Wojciech Budzianowski

No abstract provided.

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Genetic Analysis Of The Federally Endangered Winged Mapleleaf Mussel To Aid Proposed Re-Introduction Efforts, Kevin J. Roe

Kevin J. Roe

The winged mapleleaf, Quadrula fragosa, historically occurred in the Mississippi, Tennessee, Ohio, and Cumberland river drainages, but has suffered severe population and range reductions. At the time that the species was federally listed as endangered, its range was thought to have been reduced to a stretch of the St. Croix River between northwestern Wisconsin and east-central Minnesota. Recently, morphologically “Q. fragosa-like” specimens were discovered at sites in Arkansas (Ouachita River and Saline River), Missouri (Bourbeuse River), and Oklahoma (Little River). Subsequently, a plan was proposed to re-introduce Q. fragosa into portions of its historic range where its been extirpated from …

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Spatial And Temporal Patterns Of Ch4 And N2o Fluxes In Terrestrial Ecosystems Of North America During 1979–2008: Application Of A Global Biogeochemistry Model, Hanqin Tian, X. Xu, M. Liu, Wei Ren, C. Zhang, G. Chen, Chaoqun (Crystal) Lu

Chaoqun (Crystal) Lu

Continental-scale estimations of terrestrial methane (CH4) and nitrous oxide (N2O) fluxes over a long time period are crucial to accurately assess the global balance of greenhouse gases and enhance our understanding and prediction of global climate change and terrestrial ecosystem feedbacks. Using a process-based global biogeochemical model, the Dynamic Land Ecosystem Model (DLEM), we quantified simultaneously CH4 and N2O fluxes in North America's terrestrial ecosystems from 1979 to 2008. During the past 30 years, approximately 14.69 ± 1.64 T g C a−1 (1 T g = 1012 g) of CH4, and 1.94 ± 0.1 T g N a−1 of N2O …

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Mechanistically Driven Development Of Iridium Catalysts For Asymmetric Allylic Substitution, John F. Hartwig, Levi M. Stanley

Levi M. Stanley

Enantioselective allylic substitution reactions comprise some of the most versatile methods for preparing enantiomerically enriched materials. These reactions form products that contain multiple functionalities by creating carbon−nitrogen, carbon−oxygen, carbon−carbon, and carbon−sulfur bonds. For many years, the development of catalysts for allylic substitution focused on palladium complexes. However, studies of complexes of other metals have revealed selectivities that often complement those of palladium systems. Most striking is the observation that reactions with unsymmetrical allylic electrophiles that typically occur with palladium catalysts at the less hindered site of an allylic electrophile occur at the more hindered site with catalysts based on other …

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Bipolar Electrodes: A Useful Tool For Concentration, Separation, And Detection Of Analytes In Microelectrochemical Systems, François Mavré, Robbyn K. Anand, Derek R. Laws, Kwok-Fan Show, Byoung-Yong Chang, John A. Crooks, Richard M. Crooks

Robbyn Anand

Over the past decade, bipolar electrochemistry has emerged from relative obscurity to provide a promising new means for integrating electrochemistry into lab-on-a-chip systems. This article describes the fundamental operating principles of bipolar electrodes, as well as several interesting applications. The graphic, by François Mavré, shows the principle of operation of a bipolar electrode within a microfluidic channel overlaid on a background image of electrogenerated chemiluminescence from an array of 1000 bipolar electrodes.

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Physical And Chemical Characterization Of Fuel Ethanol Coproducts Relevant To Value-Added Uses, Rumela Bhadra, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan

Kurt A. Rosentrater

One of the fastest growing industries in the United States is the fuel ethanol industry. In terms of ethanol production capability, the industry has grown by more than 600% since the year 2000. The major coproducts from corn-based ethanol include distillers dried grains with solubles (DDGS) and carbon dioxide. DDGS is used as a livestock feed because it contains high quantities of protein, fiber, amino acids, and other nutrients. The goal of this study was to quantify various chemical and physical properties of DDGS, distillers wet grains (DWG), and distillers dried grain (DDG) from several plants in South Dakota. Chemical …

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Physical Basis Of The Inducer-Dependent Cooperativity Of The Central Glycolytic Genes Repressor/Dna Complex, Denis Chaix, Matthew L. Ferguson, Cedric Atmanene, Alain Van Dorsselaer, Sarah Sanglier-Cianférani, Catherine A. Royer, Nathalie Declerck

Matthew L. Ferguson

The Central glycolytic genes Repressor (CggR) from Bacillus subtilis belongs to the SorC family of transcription factors that control major carbohydrate metabolic pathways. Recent studies have shown that CggR binds as a tetramer to its tandem operator DNA sequences and that the inducer metabolite, fructose 1,6-bisphosphate (FBP), reduces the binding cooperativity of the CggR/DNA complex. Here, we have determined the effect of FBP on the size, shape and stoichiometry of CggR complexes with full-length and half-site operator sequence by small-angle X-ray scattering, size-exclusion chromatography, ﬂuorescence cross-correlation spectroscopy and noncovalent mass spectrometry (MS). Our results show that CggR forms a compact …

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Faculty Success: Developing A Research And Publication Agenda, Kathleen P. King

Kathleen P King

Anyone associated with higher education will acknowledge that tenure track faculty have to perform a fantastic balancing act. Compared to an administrative or line role in an organization, higher education faculty have tremendous autonomy and freedom. However, they face competing demands of many different (and good) opportunities, and for them the stakes are always high. Help is here! This article introduces a powerful strategy for staying on track in the research strand of this competitive journey.

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Full-Text Articles in Physical Sciences and Mathematics

A Finite Element Method For Martingale-Driven Stochastic Partial Differential Equations, Andrea Barth

Communications on Stochastic Analysis

Sample Properties Of Random Fields Iii: Differentiability, Jürgen Potthoff

Communications on Stochastic Analysis

The Itô Integral For A Certain Class Of Lévy Processes And Its Application To Stochastic Partial Differential Equations, Erika Hausenblas

Communications on Stochastic Analysis

Sufficient Conditions Of Optimality For Backward Stochastic Evolution Equations, Abdulrahman Al-Hussein

Communications on Stochastic Analysis

Upper Bounds On Rubinstein Distances On Configuration Spaces And Applications, Laurent Decreusefond, Aldéric Joulin, Nicolas Savy

Communications on Stochastic Analysis

Convergence Of Particle Filtering Method For Nonlinear Estimation Of Vortex Dynamics, Sivaguru S Sritharan, Meng Xu

Communications on Stochastic Analysis

Zeons, Lattices Of Partitions, And Free Probability, René Schott, G Stacey Staples

Communications on Stochastic Analysis

Surface Measures On The Dual Space Of The Schwartz Space, S Chaari, F Cipriano, H.-H. Kuo, H Ouerdiane

Communications on Stochastic Analysis

Solutions Of Semilinear Wave Equation Via Stochastic Cascades, Yuri Bakhtin, Carl Mueller

Communications on Stochastic Analysis

Roger Temam On The Occasion Of His 70th Birthday, Claude Michel Brauner, Danielle Hilhorst, Alain Miranville, Shouhong Wang, Xiaoming Wang

Mathematics and Statistics Faculty Research & Creative Works

Sfa Weather Station-September 2010, Arthur Temple College Of Forestry And Agriculture, Stephen F. Austin State University

Weather Station Data

Magnetoelectric Effects In Ferromagnetic Cobalt/Ferroelectric Copolymer Multilayer Films, Abhijit Mardana, Mengjun Bai, A. Baruth, Stephen Ducharme, Shireen Adenwalla

Stephen Ducharme Publications

Quiescent X-Ray Emission From Cen X-4: A Variable Thermal Component, Edward M. Cackett, Edward F. Brown, Jon M. Miller, Rudy Wijnands

Physics and Astronomy Faculty Research Publications

Relativistic Lines And Reflection From The Inner Accretion Disks Around Neutron Stars, Edward M. Cackett, Jon M. Miller, David R. Ballantyne, Didier Barret, Sudip Bhattacharyya, Martin Boutelier, M. Coleman Miller, Tod E. Strohmayer, Rudy Wijnands

Physics and Astronomy Faculty Research Publications

Determination Of Cyanide Exposure By Gas Chromatography–Mass Spectrometry Analysis Of Cyanide-Exposed Plasma Proteins, Stephanie L. Youso, Gary A. Rockwood, John A. Lee, Brian A. Logue

Chemistry and Biochemistry Faculty Publications

From The Editor, James Manasco

Sci-Tech News

The Socio-Ethical Considerations Surrounding Government Mandated Location-Based Services During Emergencies: An Australian Case Study, Anas Aloudat, K. Michael

Associate Professor Katina Michael

Enhancing Stockmarket Trading Performance With Anns, Bruce Vanstone, Gavin Finnie

Gavin Finnie

Technische Dokumentation Des Dfg-Instrumentenkastens, Timo Wandhoefer, Nina Steinweg, York Sure

Timo Wandhoefer

Health Benefits Of Increased Walking For Sedentary, Generally Healthy Older Adults: Using Longitudinal Data To Approximate An Intervention Trial, Paula Diehr

Paula Diehr

Strengthening Strategic Environmental Assessment In Canada: An Evaluation Of Three Basic Options, Robert Gibson, Hugh Benevides, Meinhard Doelle, Denis Kirchhoff

Denis Kirchhoff

Product Quality, Perceived Price And Product Features Analysis And Their Influences To Brand Image And Consumer Satisfaction

Homa. P. Harahap

Energetyka Niskoemisyjna, Wojciech M. Budzianowski

Wojciech Budzianowski

Genetic Analysis Of The Federally Endangered Winged Mapleleaf Mussel To Aid Proposed Re-Introduction Efforts, Kevin J. Roe

Kevin J. Roe

Spatial And Temporal Patterns Of Ch4 And N2o Fluxes In Terrestrial Ecosystems Of North America During 1979–2008: Application Of A Global Biogeochemistry Model, Hanqin Tian, X. Xu, M. Liu, Wei Ren, C. Zhang, G. Chen, Chaoqun (Crystal) Lu

Chaoqun (Crystal) Lu

Mechanistically Driven Development Of Iridium Catalysts For Asymmetric Allylic Substitution, John F. Hartwig, Levi M. Stanley

Levi M. Stanley

Bipolar Electrodes: A Useful Tool For Concentration, Separation, And Detection Of Analytes In Microelectrochemical Systems, François Mavré, Robbyn K. Anand, Derek R. Laws, Kwok-Fan Show, Byoung-Yong Chang, John A. Crooks, Richard M. Crooks

Robbyn Anand

Physical And Chemical Characterization Of Fuel Ethanol Coproducts Relevant To Value-Added Uses, Rumela Bhadra, Kurt A. Rosentrater, Kasiviswanathan Muthukumarappan

Kurt A. Rosentrater

Physical Basis Of The Inducer-Dependent Cooperativity Of The Central Glycolytic Genes Repressor/Dna Complex, Denis Chaix, Matthew L. Ferguson, Cedric Atmanene, Alain Van Dorsselaer, Sarah Sanglier-Cianférani, Catherine A. Royer, Nathalie Declerck

Matthew L. Ferguson

Faculty Success: Developing A Research And Publication Agenda, Kathleen P. King

Kathleen P King