Physical Sciences and Mathematics Commons^™

On The Benefit Of Supporting Virtual Channels In Wormhole Routers, Richard Cole, Bruce Maggs, Ramesh Sitaraman

Ramesh Sitaraman

This paper analyzes the impact of virtual channels on the performance of wormhole routing algorithms. We study wormhole routing on network in which each physical channel, i.e., communication link, can support up to B virtual channels. We show that it is possible to route any set of messages with L flits each, whose paths have congestion C and dilation D in O((L+ D) C(D log D)1_B_B) flit steps, where a flit step is the time taken to transmit B flits, i.e., one flit per virtual channel, across a physical channel. We also prove a nearly matching lower bound; i.e., for …

Emisja Chlorowodoru I Związków Fluoru Ze Spalania Odpadów Niebezpiecznych, Marian Mazur, Robert Oleniacz, Marek Bogacki

Robert Oleniacz

The paper presents the results of measurements of the concentration of hydrogen chloride (HCl) and fluoride compounds (as HF) in raw and purified combustion gases discharged from the incineration of selected hazardous wastes. The study included two installations operating on an industrial scale: a multiple hearth furnace and a rotary kiln incinerator equipped with a single wet flue gas cleaning systems. In the multiple hearth furnace was being incinerated sludge from coke industry. In the rotary kiln were being incinerated coal (coke) tars, contaminated cleaning rags, sawdust, used gloves, outdated pharmaceuticals and medicines, hospital waste, waste paints, varnish and lubricant, …

Построение Редуцированного Физического Гамильтониана Для Сферически-Симметричной Гравитации, Николай Заркевич

Nikolai A. Zarkevich

No abstract provided.

51. Ephraim Katchaski-Katzir, Otto Vogl, Joseph Jagur-Grodzinski

Otto Vogl

No abstract provided.

Characters Of The Centralizer Algebras Of Mixed Tensor Representations Of Gl(R,C) And The Quantum Group U-Q(Gl(R,C)), Thomas Halverson

Thomas M. Halverson

No abstract provided.

Electrochemical And Infrared Studies Of Model Membrane Systems, Mark Anderson

Mark R. Anderson

No abstract is available at this time.

Jual Obat Aborsi Di Banjarmasin Langsung Tuntas ( Call : 0855 7636 186)-Antar Gojek, Ibnu Suab

ibnu suab

Obat Kista Bartholin Terbukti Ampuh Dan Aman Tanpa Efek Samping, User Id

Rizky Herbal

Termiczna Utylizacja Odpadów W Spalarni "Lobbe" W Dąbrowie Górniczej – Problemy Emisji Zanieczyszczeń, Marian Mazur, Ryszard Januszek, Robert Oleniacz

Robert Oleniacz

The paper presents selected results of comprehensive studies of air quality impact assessment carried out for the „LOBBE” incineration plant in Dąbrowa Górnicza (Poland) in 1995. It focused mainly on air emissions problems. Stack concentrations and emissions of selected air pollutants formed during thermal treatment processes of different kinds of waste materials and incinerators is performed. The study covered both sludge and slime incinerated in a multiple hearth furnace and four example groups of waste materials incinerated in a rotary furnace. The research have helped confirm the levels of air emissions as a function of the type of incinerated waste …

Subthreshold Dynamics In Periodically Stimulated Squid Giant Axons, Daniel Kaplan, J. R. Clay, T. Manning, L. Glass, M. R. Guevara, A. Shrier

Daniel T. Kaplan

No abstract provided.

Signal Separation By Nonlinear Projections: The Fetal Ecg, T. Schreiber, Daniel Kaplan

Daniel T. Kaplan

No abstract provided.

Influence Of Solvent On The Interfacial Structure Of Self-Assembled Alkanethiol Monolayers, Mark Anderson, Mark Evaniak, Minhui Zhang

Mark R. Anderson

Polarization modulation infrared reflection absorption spectroscopy (PM-IRRAS) is used to study the structure of octadecanethiol, tetradecanethiol, and decanethiol monolayers in the presence of air, deuterium oxide, and acetonitrile-d3. It is found that the structure of the monolayer is dependent on both the adjacent environment and the initial structural order of the monolayer. In the D2O solutions, spectral changes are similar for the three monolayers and are characteristic of interaction predominantly between the solvent and the terminal portion of the monolayers. This correlates with electrochemical capacitance measurements that indicate little permeation of the aqueous electrolyte in the monolayer, even with the …

Development And Evaluation Of Internet-Based Hypermedia Chemistry Tutorials, Brian Tissue, Ronald Earp, Ching-Wan Yip, Mark Anderson

Mark R. Anderson

This progress report describes the development and student use of World-Wide-Web-based prelaboratory exercises in senior-level Instrumental Analysis during the 1995 Fall semester. The laboratory preparation exercises contained hypermedia tutorials and multiple-choice questions that were intended to familiarize the students with the experiments and instrumentation before their laboratory session. The overall goal of our work is to explore ways in which computer and network technology can be applied in education to improve the cost-effectiveness and efficacy of teaching. The course material can be accessed at http://www.chem.vt.edu/chem-ed/4114/Fall1995.html.

Our Common Future, American Style (Reviewing President’S Council On Sustainable Development, Sustainable America (1996)), John C. Dernbach

John C. Dernbach

No abstract provided.

An International Study Of Intensity In Talented Teenagers Using The Overexcitability Questionnaire (Oeq), John Fraas, Jane Piirto, Geri Cassone, Cheryl Ackerman

John W. Fraas

No abstract provided.

Electronic Origins Of Ordering In Multicomponent Metallic Alloys: Application To The Cu-Ni-Zn System, J. D. Althoff, Duane D. Johnson, F. J. Pinski, J. B. Staunton

Duane D. Johnson

We investigate the ordering tendencies of the fcc Cu-Ni-Zn system using a recently developed first-principles, density-functional-based theory of atomic short-range order (ASRO) in disordered substitutional alloys of an arbitrary number of components. We find for the binary alloys a variety of effects which should lead to competition in the ternaries: commensurate ordering (Ni-Zn), long-period ordering (Cu-rich Cu-Zn), and clustering (Cu-Ni), in agreement with experiment. We calculate the ASRO of various disordered ternary alloys (as described by the Warren-Cowley pair-correlation function) and discuss its relationship to the electronic structure of the binary and ternary disordered alloys. We find [100]-type ASRO over …

Hplc Analysis Of Amino Acid- And Peptide-Derived Chloramines, Thomas Goyne, Jennifer Latham, Suzanne Furness-Green, Tracy Inskeep, Lu Ping, Heather Greenleaf-Schumann

Thomas Goyne

No abstract provided.

Β Effect Of Phosphorus Functionalities, Joseph B. Lambert, Yan Zhao

Yan Zhao

Diphenylphosphinoyl (−P(O)Ph2) and diphenylthiophosphinoyl (−P(S)Ph2) respectively are modest and strong β-effect functionalities. When these groups are antiperiplanar to mesylate, the substrates solvolyze through unimolecular ionization. In contrast, substrates with the synclinal (gauche) arrangement react bimolecularly with solvent. The anti/gauche rate ratio is 440 for the oxide and 3.2 × 106 for the sulfide at 25 °C. The antiperiplanar sulfide in fact reacts 220 times more rapidly than the analogous cyclohexyl substrate at 25 °C, despite the strong electron-withdrawing nature of diphenylthiophosphinoyl. The α-secondary hydrogen/deuterium kinetic isotope effects of 1.21 for the anti oxide and 1.26 for the anti sulfide suggest …

Η Production In Peripheral Heavy-Ion Collisions, Alec Schramm, Daniel Reeves

Alec J Schramm

We estimate the impact parameter dependence of the production cross section for ηc and ηb mesons in peripheral heavy-ion collisions. Total and elastic γγ cross sections are calculated in an equivalent photon approximation.

Equatorial Wind Compression Effects Across The H-R Diagram., R. Ignace, J. P. Cassinelli

Richard Ignace

We investigate the degree to which moderate stellar rotation rates can influence the two-dimensional density structure in the winds of four classes of stars: WoIf-Rayet, B[e], asymptotic giant branch (AGB), and novae. These classes are distributed across the H-R diagram and have a wide range of escape speeds and wind acceleration. Furthermore, all have members which possess asymmetric circumstellar nebulae. It has been suggested that these asymmetries could result from stellar winds which have moderate equatorial density enhancements. Large enhancements may arise as the result of stellar rotation as demonstrated by the wind-compressed disk (WCD) model of Bjorkman & Cassinelli. …

Obat Telinga Berdengung, Riswan Alfarid

Riswan Alfarid

Nonlinear Noise Reduction For Electrocardiograms, Daniel T. Kaplan, T. Schreiber

Daniel T. Kaplan

No abstract provided.

Scanning Local‐Acceleration Microscopy, Nancy Burnham, A. Kulik, G. Gremaud, P. Gallo, F. Oulevey

Nancy A. Burnham

By adapting a scanning force microscope to operate at frequencies above the highest tip–sample resonance, the sensitivity of the microscope to materials’ properties is greatly enhanced. The cantilever’s behavior in response to high‐frequency excitation from a transducer underneath the sample is fundamentally different than to its low‐frequency response. In this article, the motivations, instrumentation, theory, and first results for this technique are described.

Non-Traditional Techniques In Teaching Science For General Students, Gary Lewis, Ben Golden, Gail Schiffer, Diane Willey

Gary C. Lewis

No abstract provided.

World Wide Web, Netscape, And Simple Html Coding: What Use Do They Have In The Classroom?, C. Claiborne, Sonya Shepherd

Sonya S. Gaither

No abstract provided.

Materials’ Properties Measurements: Choosing The Optimal Scanning Probe Microscope Configuration, Nancy Burnham, G Gremaud, A Kulik, P Gallo, F Oulevey

Nancy A. Burnham

Rheological models are used to represent different scanning probe microscope configurations. The solutions for their static and dynamic behavior are found and used to analyze which scanning probe microscope configuration is best for a given application. We find that modulating the sample at high frequencies results in the best microscope behavior for measuring the stiffness of rigid materials, and that by modulating the tip at low frequencies and detecting the motion of the tip itself (not its position relative to the tip holder) should be best for studying compliant materials in liquids.

On The Optimization Of A Dc Arcjet Diamond Chemical Vapor Deposition Reactor, Scott Reeve, Wayne Weimer, David Dandy

Scott Reeve

No abstract provided.

Zanieczyszczenie Powietrza Kotliny Sądeckiej Przez Przemysł Elektrodowy, Marian Mazur, Marek Bogacki, Robert Oleniacz

Robert Oleniacz

The article evaluates the impact of electrode industry (production of carbon and graphite electrodes in the plant Polgraph SA) on air quality in the Kotlina Sądecka valley and the city Nowy Sącz (Poland). The work presents completed so far environmental investments and the level of emissions of selected air pollutants characteristic of the analyzed facility, including PAHs emissions. Based on the modeling of the dispersion of pollutants in ambient air was determined the levels of pollutant concentrations in the air and location of most affected areas. The calculation results were compared with the results of direct measurements. Particular attention was …

Studies Of The Importance Of Molecular Structure And Orientation To Adhesive Interactions At Interfaces, Cynthia Kraft, Mark Anderson

Mark R. Anderson

No abstract is currently available.

Weighing Evidence In Sexual Abuse Evaluations: An Introduction To Bayes's Theorem, James M. Wood

James M. Wood

This article introduces readers to Bayes' theorem, a simple mathematical formula that can illuminate general issues and assist evaluators in the field of child sexual abuse. The theorem is applied to a case study of sexual abuse allegations that arose during a custody dispute.