Digital Commons Network^™

Transient Analysis Of Heat And Mass Transfer By Natural Convection In Power-Law Fluid Past A Vertical Plate Immersed In A Porous Medium (Numerical Study), Nasser S. Elgazery

Applications and Applied Mathematics: An International Journal (AAM)

This paper attempted a numerical examination of the problem of unsteady free convection with heat and mass transfer from an isothermal vertical flat plate to a non-Newtonian fluid saturated porous medium. The flow in the porous medium was described via the Darcy-Brinkman-Forchheimer model. The simultaneous development of the problem of boundary layers was obtained numerically by finite difference method. Boundary layer and Boussinesq approximations had been incorporated. Numerical calculations were carried out for the various parameters entering into the problem. Velocity, temperature and concentration profiles were shown graphically and the physical quantities of the problem were given in tables. It …

State And Regional Variation In The Effects Of Trade On Job Displacement In The Us Manufacturing Sector, 1982-1999, Roger White

Economics

Worker-level data from the 1984–2000 Displaced Worker Surveys are employed to examine the effects of trade on manufacturing workers’ probabilities of job displacement. Observed changes in import and export penetration rates yield increases in displacement probabilities for the North Central, Middle Atlantic and South Central regions yet lower displacement probabilities for the Plains/West and Pacific regions. Changes in import and export price indexes lead to increases in displacement probabilities for the Pacific, Southeast and Northeast regions and decreases for the South Central and Middle Atlantic regions. However, while the influences of imports and exports on job displacement vary considerably across …

Book Reviews

Swedish American Genealogist

No abstract provided.

Acuta Enews December 2008, Vol. 37, No. 12

ACUTA Newsletters

In This Issue

From the President.............. Corinne Hoch, Columbia, Univ., ACUTA President

Board Report............. Riny Ledgerwood, San Diego State Univ., ACUTA Secretary/Treasurer

DC Update............. Dave Ostrom, Washington State Univ. (retired)

Info Links........... Randy Hayes, Univ. of Northern Iowa

ACUTA Guide to Products and Services: Keep It Handy, Use It Often

ACUTA Web Seminar: Wireless Andrew 2.0

"Earthbottle" Brought to you by Clemson

Check It Out: Press Releases... Job Postings.... RFIs/RFPs

Holiday Greetings from the ACUTA Staff

Welcome New Members

12-01-2008 Nuttle Involved In Pharmaceutical Research At Swosu, Southwestern Oklahoma State University

THE BARK ARCHIVE 2008

Jacinca Nuttle, a Southwestern Oklahoma State University senior chemistry major from McPherson (KS), was recently awarded a NASA scholarship for her cancer research under the direction of Dr. Jason Johnson.

Westview: Vol. 28, Iss. 2 (Fall/Winter 2008)

Westview

No abstract provided.

An Assurance Of Learning Success Model: Toward Closing The Feedback Loop, Bonita L. Betters-Reed, Mindell Reiss Nitkins, Susan D. Sampson

Organization Management Journal

This paper provides a systemic approach to building and sustaining a solid assurance of learning program using the framework of Kotter’s (1995) Strategic Model for Transforming Organizations. A comprehensive model for launching and sustaining a systemic approach to program review that ‘‘closes the loop’’ is shared step by step. Particular attention is paid to the organizational behaviors and processes that accompany each step, and to sharing important lessons that were learned. A review of the assessment literature in higher education and recent Advancement of Collegiate Schools of Business International (AACSB) contributions to this body of knowledge identifies a critical gap …

Secondary Electron Emission From Freely Supported Nanowires, Makoto Suzuki, Kazuhiro Kumagai, Takashi Sekiguchi, Alan M. Cassell, Tsutomu Saito, Cary Y. Yang

Electrical and Computer Engineering

We present secondary electron (SE) emission results from freely supported carbon/silicon nitride (Si₃N₄) hybrid nanowires using scanning electron microscopy. We found that, contrary to bulk materials, the SE emission from insulating or electrically isolated metallic nanowires is strongly suppressed by the penetrating beam. A mechanism of the SE suppression by the positive specimen charging is proposed, which is based on a total emission yield calculation using the Monte Carlo technique. This finding provides an important basis for studying low-energy electron emission from nanostructures under a penetrating electron beam.

Liability Protections For Emergency Volunteer Health Practitioners And Entities, Jennifer Lee, Orriel L. Richardson, Ross Margulies, Sara J. Rosenbaum

Health Policy and Management Faculty Publications

Twenty-four states and D.C. have statutes that extend some level of immunity to groups and/or organizations providing charitable, emergency, or disaster relief services, although these laws varied greatly among states.

Winter 2008, Marisela Cadena-Smith

Connection

The Official Community Newsletter for Collin College Connection is the college's award-winning community newsletter published three times a year to inform members of the Collin County community about college news, awards, events, and more.

Wsu Research News, Winter 2008, Office Of Research And Sponsored Programs, Wright State University

WSU Research News

A sixteen page newsletter of the WSU Research News. The WSU Research News was published monthly beginning in June of 1968 and issued by the Office of Research Development. This newsletter was created to provide information to the WSU faculty about the availability of outside funds for research and educational programs, new developments that may affect availability of funds, and general information on research and educational activities at Wright State University.

Integrating Landscapes That Have Experienced Rural Depopulation And Ecological Homogenization Into Tropical Conservation Planning, Aerin L. Jacob, Ismael Vaccaro, Raja Sengupta, Joel N. Hartter, Colin A. Chapman

Geography

If current trends of declining fertility rates and increasing abandonment of rural land as a result of urbanization continue, this will signal a globally significant transformation with important consequences for policy makers interested in conservation planning. This transformation is presently evident in a number of countries and projections suggest it may occur in the future in many developing countries. We use rates of population growth and urbanization to project population trends in rural areas for 25 example countries. Our projections indicate a general decline in population density that has either occurred already (e.g., Mexico) or may occur in the future …

A 60 Ghz Wireless Network For Enabling Uncompressed Video Communication, Harkirat Singh, Jisung Oh, Changyeul Kweon, Xiangping Qin, Huai-Rong Shao, Chiu Ngo

Articles

Uncompressed high-definition video streaming over wireless personal area networks is a challenging problem because of the high data rate requirement and channel variations. With the advances in RF technology and the huge bandwidth available worldwide in the 57–66 GHz millimeter-wave unlicensed spectrum, mmWave WPANs that can support multigigabit transmission are being developed. However, compared to low-frequency signals (2.4 or 5 GHz), mmWave signals are more fragile; indeed, the propagation losses are significantly higher. In this article we present an mmWave system for supporting uncompressed HD video up to 3 Gb/s. The system includes various efficient error protection and concealment schemes …

Detection Of Voids In Prestressed Concrete Bridges Using Thermal Imaging And Ground-Penetrating Radar, David G. Pollock, Kenneth J. Dupuis, Benjamin Lacour, Karl R. Olsen

Faculty Publications - Biomedical, Mechanical, and Civil Engineering

Thermal imaging and ground-penetrating radar was conducted on concrete specimens with simulated air voids. For the thermal imaging inspections, six concrete specimens were constructed during the month of June 2007 to simulate the walls of post-tensioned box girder bridges. The objective was to detect simulated air voids within grouted post-tensioning ducts, thus locating areas where the post-tensioning steel strands are vulnerable to corrosion. The most important deduction taken from these inspections was that PT-ducts and simulated voids were more detectable in the 20 cm (8 in.) thick specimens than in the 30 cm (12 in.) thick specimens. While inspections of …

Eastern Kentucky University Magazine, Fall/Winter 2008, Eastern Kentucky University, Alumni Relations

The Eastern Magazine

No abstract provided.

Phytochemical Investigations Of Some Laticiferous Plants Belonging To Khandesh Region Of Maharashtra, R. T. Mahajan, S. B. Badgujar

Ethnobotanical Leaflets

Analyses were carried out on latex obtained from twenty one plant species belonging to Khandesh region of Maharashtra, India, for the presence of possible secondary metabolites, namely alkaloids, flavonoids, terpenoids, cynogenic glycosides, phenolics, tannins and saponins. Phenolic compounds were found in all latex samples except in Ipomoea carnea Jacq. Seventy six percent species of laticiferous plants contain alkaloid. Terpenoids were found in the latex of Carica papaya L. and Manilkara zapota (L.) P. van Royen only however, remaining plants were devoid. Cynogenic glycosides and tannins were detected in 52 % and 48 % of latex samples respectively. Flavonoids and saponins …

Soliton Perturbation Theory For The Modified Kawahara Equation, Anjan Biswas

Applications and Applied Mathematics: An International Journal (AAM)

The modified Kawahara equation is studied along with its perturbation terms. The adiabatic dynamics of the soliton amplitude and the velocity of the soliton are obtained by the aid of soliton perturbation theory.

On The Mixed Sum Of Doubly Infinite And Finite Independent Random Variables, Mridula Garg

Applications and Applied Mathematics: An International Journal (AAM)

The aim of the present paper is to study the distribution of the mixed sum of two random variables. Here we establish a theorem which gives the probability density function (pdf) of sum of doubly infinite and finite independent random variables. The distribution of the infinite and finite independent random variables is given in the form of corollary. As an application of these results we have obtained a distribution of sum of bilateral exponential variate with triangular, Rayleigh with uniform and Weibull with triangular variate. Some graphs of these distributions have also been given.

Evaluation Of The Stability And Validity Of Participant Samples Recruited Over The Internet., Daniel Z Lieberman

Psychiatry and Behavioral Sciences Faculty Publications

Research conducted via the Internet has the potential to reach important clinical populations of participants who would not participate in traditional studies. Concerns exist, however, about the validity of samples recruited in this manner, especially when participants are anonymous and never have contact with study staff. This study evaluated two anonymous samples that were recruited over the Internet to test an online program designed to help problem drinkers. The two studies were conducted 3 years apart, and different recruitment strategies were utilized. Despite these differences, the two samples were highly similar in demographic and clinical features. Correlations that have been …

Engineering Division, Daureen Nesdill

Sci-Tech News

No abstract provided.

School Of Engineering Hosts First Robotics Competition, Liberty University

December 2008

No abstract provided.

Design, Fabrication, Modeling And Characterization Of Electrostatically-Actuated Silicon Membranes, Brian C. Stahl

Master's Theses

This thesis covers the design, fabrication, modeling and characterization of electrostatically actuated silicon membranes, with applications to microelectromechanical systems (MEMS). A microfabrication process was designed to realize thin membranes etched into a silicon wafer using a wet anisotropic etching process. These flexible membranes were bonded to a rigid counterelectrode using a photo-patterned gap layer. The membranes were actuated electrostatically by applying a voltage bias across the electrode gap formed by the membrane and the counterelectrode, causing the membrane to deflect towards the counterelectrode. This deflection was characterized for a range of actuating voltages and these results were compared to the …

Insights, Winter, 2008, Utah State University

Discovery Magazine

Bi-annual alumni newsletter for the College of Science of Utah State University in Logan.

Mapping Reality Into Virtual Worlds, Josh Mcfarlane

Computer Science and Computer Engineering Undergraduate Honors Theses

As virtual worlds become more prevalent, they become increasingly useful as a means of information dissemination. This thesis examines the possible connections between real world objects and their virtual world counterparts. We look at how, by attaching sensors to an object, or by using a smart object with embedded sensors, the information can be relayed to a server. From this information, it will be possible to create a duplicate object in the virtual world and have it mirror the real world object in terms of state and movement. Almost all current solutions for remotely viewing a room or area are …

Policies Of Inertia Or Innovation? European Public Service In Transition From Psb To Psm, Minna Aslama

McGannon Center Working Paper Series

No abstract provided.

Daily Variation And Predicting Stock Market Returns For The Frankfurter Börse (Stock Market), Jeffrey E. Jarrett, Janne Schilling

College of Business Faculty Publications

In this article we test the random walk hypothesis in the German daily stock prices by means of a unit root test and the development of an ARIMA model for prediction. The results show that the time series of daily stock returns for a stratified random sample of German firms listed on the stock exchange of Frankfurt exhibit unit roots. Also, we find that one may predict changes in the returns to these listed stocks. These time series exhibit properties which are forecast able and provide the intelligent data analysts' methods to better predict the directive of individual stock returns …

A Comparison Of Two Probability Encoding Methods: Fixed Probablity Vs. Fixed Variable Values, Ali E. Abbas, David V. Budescu, Hsiu-Ting Yu, Ryan Haggerty

Psychology Faculty Publications

We present the results of an experiment comparing two popular methods for encoding probability distributions of continuous variables in decision analysis: eliciting values of a variable, X, through comparisons with a fixed probability wheel and eliciting the percentiles of the cumulative distribution, F(X), through comparisons with fixed values of the variable. We show slight but consistent superiority for the fixed variable method along several dimensions such as monotonicity, accuracy, and precision of the estimated fractiles. The fixed variable elicitation method was also slightly faster and preferred by most participants. We discuss the reasons for its superiority and conclude with several …

Preparation And Characterization Of Particles From Chitosan With Different Molecular Weights And Their Trimethyl Chitosan Derivatives For Nasal Immunization, W Boonyo, H E. Junginger, N Waranuch, A Polnok, T Pitaksuteepong

Journal of Metals, Materials and Minerals

According to previous studies, molecular weights (MW) of chitosan presented an influence on the level of immune response to model antigen when administering with chitosan through nasal route. Moreover, trimethyl chitosan (TMC) with a degree of quaternization (DQ) of 40%, chitosan derivatives, was also shown to be the most potent nasal OVA delivery platforms compared to TMC with DQ of 20% and 60% in mice model. The aims of this study were to prepare particles from chitosan with difference MW and their TMC derivatives (DQ = 40%) and to characterize size, zeta potential, loading efficiency and release profile in order …

Chitosan/Calcium Phosphate Composites Scaffolds Prepared By Membrane Diffusion Process, P Thanaphat, P Thunyakitpisal, W Techaboonyakiat

Journal of Metals, Materials and Minerals

Hydroxyapatite (Ca10(PO4)6(OH)2, HAp) and Dicalcium phosphate dihydrate (CaHPO4.H2O, DCPD) were homogeneously hybridized into chitosan solution by membrane diffusion process. The threedimensional scaffolds were obtained by freeze-drying process. The organic and inorganic contents of scaffold were determined by using thermogravimetry analysis (TGA). The surface morphology of the scaffold and characteristic of calcium phosphate were investigated by scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDX), and X-ray diffraction (XRD), respectively. Compressive modulus was also determined by dynamic mechanical analysis (DMA). The hybridized inorganic content ranges from 35-45%. Both chitosan/HAp and chitosan/DCPD scaffolds showed interconnected porous structure. The calcium to phosphorus ratios …

Investigation Of The Interactions Of Cationic Polyelectrolytes With Anionic Surfactants: Effects Of Polymer, Surfactant And Solution Properties, Lisa Renee Huisinga

Dissertations

The intent of this research is to explore and understand the effects that a range of polymer, surfactant and solution parameters have on the interaction of oppositely-charged polymers and surfactants. Cationic polysaccharides were chosen for this research because they are known to interact with anionic surfactants, and they offer a wide range of adjustable polymer properties, including molecular weight, charge substitution, and backbone structure. Cationic poly(vinylpyridinium hydrochloride) polymers were chosen for these studies because they provide the opportunity to explore the effects of charge position on the interaction of cationic polymers with anionic surfactants and how this influences the mechanism …