Physical Sciences and Mathematics Commons^™

Simulating An Airborne Lidar Bathymetry (Alb) System, Shachak Pe'eri, Amaresh M. Kumar, Brian R. Calder

Center for Coastal and Ocean Mapping

This study’s focus is on the horizontal and vertical uncertainties associated with ALB measurements due to scattering through the water column. A lidar simulator was constructed and we present its design and preliminary results.

Partially Coherent Backscatter In Radar Observations Of Precipitation, A. R. Jameson, A. B. Kostinski

Department of Physics Publications

Classical radar theory only considers incoherent backscatter from precipitation. Can precipitation generate coherent scatter as well? Until now, the accepted answer has been no, because hydrometeors are distributed sparsely in space (relative to radar wavelength) so that the continuum assumption used to explain coherent scatter in clear air and clouds does not hold.

In this work, a theory for a different mechanism is presented. The apparent existence of the proposed mechanism is then illustrated in both rain and snow. A new power spectrum Z( f ), the Fourier transform of the time series of the radar backscattered reflectivities, reveals …

Genetic Differentiation Between Western And Eastern (Eschrichtius Robustus) Gray Whale Populations Using Microsatellite Markers, Aimee R. Lang, David W. Weller, Richard G. Leduc, Alexander M. Burdin, Robert L. Brownell Jr.

United States Department of Commerce: Staff Publications

Within the North Pacific, gray whales (Eschrichtius robustus) are recognized as distinct eastern and western populations. Although both populations were severely reduced by whaling, the eastern population is generally considered to have recovered while the western population has remained highly depleted. Previous studies have documented genetic differentiation between the two populations on the basis of mtDNA haplotype frequencies. Since mtDNA represents only maternal inheritance patterns, the present study used bi-parentally inherited microsatellite markers (n=13) to measure differentiation between populations as well as to compare levels of nuclear genetic diversity retained in each. Mean levels of genetic diversity, as …

Propagation Factor Of A Stochastic Electromagnetic Gaussian Schell-Model Beam, Shijun Zhu, Yangjian Cai, Olga Korotkova

Physics Articles and Papers

Analytical formula is derived for the propagation factor (known asM²-factor) of a stochastic electromagnetic Gaussian Schell-model (EGSM) beam in free space and in turbulent atmosphere. In free space, the M²-factor of an EGSM beam is mainly determined by its initial degree of polarization, r.m.s. widths of the spectral densities and correlation coefficients, and its value remains invariant on propagation. In turbulent atmosphere, the M²-factor of an EGSM beam is also determined by the parameters of the turbulent atmosphere, and its value increases on propagation. The relative M²-factor of an EGSM beam with …

Sustainable Agriculture: A Time For Education, Kortnie Millhouse

Agricultural Education and Communication

This study used a fifteen-question survey to identify the articulation between education of water quality practices and the willingness to implement sustainable water quality techniques on farmland according to twenty-five agricultural operations residing on the Central Coast. Questions one through eight asked respondents to indicate their agreement or disagreement with various water quality assessment tools. Questions nine through twelve asked respondents to personally rate their operation’s level of water quality management on a scale from one to ten. Questions thirteen through fifteen were open-ended questions to generate responses about demographics. Consensus was reached that the higher the level of education …

Water Quality Outreach And Education Strategies For Northwest Arkansas And Regional Watersheds, Katie Teague, John Pennington

Technical Reports

Stakeholders impact water quality and have a responsibility to protect, maintain, and improve water quality throughout northwest Arkansas and watersheds everywhere. But unless the roles of responsibility and stewardship among all stakeholders is communicated clearly and repetitively, there will be little progress made towards maintaining and improving water quality, while lawsuits, blame, and inaction will persist. Thus, the overall goal of water quality education and outreach is to improve the ability of stakeholders to take care of their watershed by teaching them what actions are or are not beneficial for water quality protection, maintenance, or improvements. Specific outreach and education …

Regulatory Drivers For The Upper Illinois River And Other Regional Watersheds, Ray Weida

Technical Reports

Environmental regulations are put in place to protect the air, water and land from threat of pollution. Regulatory programs establish pollution limits, determine compliance, and enforce environmental laws and regulations for waterbodies within the watershed based on the designated uses for the individual waterbody. These established regulations make sure that the state’s mandatory standards for clean water and the minimum federal standards are being achieved. Environmental regulations are established on both the federal and state levels. On the federal level, Congress has authorized the U.S. Environmental Protection Agency and other governmental agencies to create and enforce regulations. The EPA delegates …

Employee Time Scheduling, Mark Peter Smith

Computer Science and Software Engineering

Small business managers face the common problem of employee time scheduling. There is a solution to this problem in the form of an application called Lemming Scheduler. Lemming Scheduler is a Java based employee time scheduling program. Its features include a desktop based application that stores employee and business information as well as a web interface for employees to view schedules and update availability. The desktop application uses employee and shift information to automatically generate schedules. The generated schedules are viewable by employees outside of work by way of the web interface. Lemming Scheduler provides a light weight interface for …

Engaging Students In Real-Life Data And Network Security Assessment Of Pace Computing Environment, Narayan Murthy, Ravi Ravishanker

Cornerstone 3 Reports : Interdisciplinary Informatics

No abstract provided.

Updating The Laboratory Notebook: Electronic Documentation Software In Teaching And Research, Zhaohua Dai, Dan Strahs

Cornerstone 3 Reports : Interdisciplinary Informatics

No abstract provided.

Solutions Of Tenth And Ninth-Order Boundary Value Problems By Modified Variational Iteration Method, Syed Tauseef Mohyud-Din, Ahmet Yildirim

Applications and Applied Mathematics: An International Journal (AAM)

In this paper, we apply the modified variational iteration method (MVIM) for solving the ninth and tenth-order boundary value problems. The proposed modification is made by introducing He’s polynomials in the correction functional. The suggested algorithm is quite efficient and is practically well suited for use in these problems. The proposed iterative scheme finds the solution without any discretization, linearization or restrictive assumptions. Several examples are given to verify the reliability and efficiency of the method. The fact that the proposed technique solves nonlinear problems without using the Adomian’s polynomials can be considered as a clear advantage of this algorithm …

Preface

Communications on Stochastic Analysis

No abstract provided.

On The Non-Classical Infinite Divisibility Of Power Semicircle Distributions, Octavio Arizmendi, Victor Pérez-Abreu

Communications on Stochastic Analysis

No abstract provided.

What Is A Gaussian State?, K R Parthasarathy

Communications on Stochastic Analysis

No abstract provided.

Persistence Of Invertibility In The Wiener Space, A S Üstünel

Communications on Stochastic Analysis

No abstract provided.

An Anticipative Stochastic Calculus Approach To Pricing In Markets Driven By Lévy Process, Bernt Øksendal, Agnès Sulem

Communications on Stochastic Analysis

No abstract provided.

The Asymptotic Dependence Behavior Of Ornstein-Uhlenbeck Semi-Stable Processes, Balram S Rajput

Communications on Stochastic Analysis

No abstract provided.

Set-Valued Stochastic Differential Equation In M-Type 2 Banach Space, Itaru Mitoma, Yoshiaki Okazaki, Jinping Zhang

Communications on Stochastic Analysis

No abstract provided.

Stochastic Magneto-Hydrodynamic System Perturbed By General Noise, P Sundar

Communications on Stochastic Analysis

No abstract provided.

A Stochastic Finite Element Method For Stochastic Parabolic Equations Driven By Purely Spatial Noise, Chia Ying Lee, Boris Rozovskii

Communications on Stochastic Analysis

No abstract provided.

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

Weather Station Data

No abstract provided.

Extended Second Welfare Theorem For Nonconvex Economies With Infinite Commodities And Public Goods, Aychiluhim Habte, Boris S. Mordukhovich

Mathematics Research Reports

This paper is devoted to the study of nonconvex models of welfare economics with public goods and infinite-dimensional commodity spaces. Our main attention is paid to new extensions of the fundamental second welfare theorem to the models under consideration. Based on advanced tools of variational analysis and generalized differentiation, we establish appropriate approximate and exact versions of the extended second welfare theorem for Pareto, weak Pareto, and strong Pareto optimal allocations in both marginal price and decentralized price forms.

Weakly Infinite Dimensional Subsets Of RN, Liljana Babinkostova, Marion Scheepers

Mathematics Faculty Publications and Presentations

The Continuum Hypothesis implies an Erdö-Sierpiński like duality between the ideal of first category subsets of ℝ^ℕ, and the ideal of countable dimensional subsets of ℝ^ℕ. The algebraic sum of a Hurewicz subset - a dimension theoretic analogue of Sierpinski sets and Lusin sets - of ℝ^ℕ with any compactly countable dimensional subset of ℝ^ℕ has first category.

Demonstrating Contradictions In A Graphical User Interface, Umakant Mishra

Umakant Mishra

Designing a GUI is not so easy as it may appear to outside. The developer has to face many difficulties while improving the features of a GUI. In many cases improving one feature of a GUI results in worsening another feature of it, thus leading to a situation known as contradiction in TRIZ. Many such contradictions have been solved by different inventors in the past. We will demonstrate some important contradictions in this article and discuss alternative solutions for each contradiction.

Współspalanie Odpadów W Suchym Piecu Cementowym A Emisja Dwutlenku Siarki I Chlorowodoru, Robert Oleniacz

Robert Oleniacz

The paper presents an assessment of the impact of waste co-combustion in a cement kiln on air emissions of HCl and SO2 recorded continuously. The subject of the research was cement kiln (dry method) with a capacity of 8500 Mg/day, equipped with a four cyclone heat exchangers and a calciner with an additional chamber for co-incineration. In the analysed period alternative fuels (mainly waste) were used in various amounts ranging up to about 35 kg / Mg clinker (with the heat substitution up to 20%) in the kiln and calciner. Chlorine and sulfur inputs to the process were up to …

Non-Prejudiced Detection And Characterization Of Genetic Modifications, Torstein Tengs

Dr. Torstein Tengs

The application of gene technology is becoming widespread much thanks to the rapid increase in technology, resource, and knowledge availability. Consequently, the diversity and number of genetically modified organisms (GMOs) that may find their way into the food chain or the environment, intended or unintended, is rapidly growing. From a safety point of view the ability to detect and characterize in detail any GMO, independent of publicly available information, is fundamental. Pre-release risk assessments of GMOs are required in most jurisdictions and are usually based on application of technologies with limited ability to detect unexpected rearrangements and insertions. We present …

Connecting Social Networking Sites With Social Science Information Portals, Timo Wandhoefer, Peter Mutschke, York Sure

Timo Wandhoefer

Wouldn’t it be great to search social science literature via social networking platforms? Mark publications for the own library? Discuss and rate publications with the online-community? Forward and share publications with “friends”? View a publication’s annotation history? Tracking the paths a publication takes throughout the social graph by being marked, forwarded, reviewed or rated? Invite the authors of publications under study to the own social network? Enhance professional information portals by social information obtained from social networks? Apart from a conclusive concept to design the listed functions above several technical points are important. First of all the social networking platform …

Iridium-Catalyzed Kinetic Asymmetric Transformations Of Racemic Allylic Benzoates, Levi M. Stanley, Chen Bai, Mitsuhiro Ueda, John F. Hartwig

Levi M. Stanley

Versatile methods for iridium-catalyzed, kinetic asymmetric substitution of racemic, branched allylic esters are reported. These reactions occur with a variety of aliphatic, aryl, and heteroaryl allylic benzoates to form the corresponding allylic substitution products in high yields (74−96%) with good to excellent enantioselectivity (84−98% ee) with a scope that encompasses a range of anionic carbon and heteroatom nucleophiles. These kinetic asymmetric processes occur with distinct stereochemical courses for racemic aliphatic and aromatic allylic benzoates, and the high reactivity of branched allylic benzoates enables enantioselective allylic substitutions that are slow or poorly selective with linear allylic electrophiles.

Climate Variability, Oceanography, Bowhead Whale Distribution, And Iñupiat Subsistence Whaling Near Barrow, Alaska, Carin J. Ashjian, Stephen R. Braund, Robert G. Campbell, J. C. George, Jack Kruse, Wieslaw Maslowski, Sue E. Moore, Craig R. Nicolson, Stephen R. Okkonen, Barry F. Sherr, Evelyn B. Sherr, Yvette H. Spitz

Craig Nicolson

The annual migration of bowhead whales (Balaena mysticetus) past Barrow, Alaska, has provided subsistence hunting to Iñupiat for centuries. Bowheads recurrently feed on aggregations of zooplankton prey near Barrow in autumn. The mechanisms that form these aggregations, and the associations between whales and oceanography, were investigated using field sampling, retrospective analysis, and traditional knowledge interviews. Oceanographic and aerial surveys were conducted near Barrow during August and September in 2005 and 2006. Multiple water masses were observed, and close coupling between water mass type and biological characteristics was noted. Short-term variability in hydrography was associated with changes in wind speed and …

Photovoltaics (Pv) As An Eligible Measure In Residential Pace Programs: Benefits And Challenges, Jason Coughlin

Publications (E)

Property Assessed Clean Energy (PACE) financing is one of several new financial models broadening access to clean energy by addressing the barrier of initial capital cost. The majority of the PACE programs in the market today include PV as an eligible measure. PV appeals to homeowners as a way to reduce utility bills, self-generate sustainable power, increase energy independence and demonstrate a commitment to the environment. If substantial state incentives for PV exist, PV projects can be economic under PACE, especially when partnered with good net metering policies. At the same time, PV is expensive relative to other eligible measures …