Digital Commons Network^™

Critical Dynamics Of Nonconserved Ising-Like Systems, K. E. Bassler, Beate Schmittmann

Beate Schmittmann

We show that the dynamical fixed point of Ising-like models, characterized by a single scalar, nonconserved ordering field, is stable near four dimensions with respect to all dynamic perturbations, including those of a nonequilibrium nature.

Technology On The Factory Floor Ii: Benchmarking Manufacturing Technology Use In The Usa, Paul Swamidass

Paul Swamidass

This monograph is the result of the second joint effort of the Manufacturing Institute of the National Association of Manufacturers (NAM) and the author for studying the use of fifteen different manufacturing technologies in the US. Timely support by the National Science Foundation enabled this second study to be expanded to a larger number of participants. A total of 1,121 members of NAM participated in this study. Hard technologies studied were: AGV, CAD, CAM, CIM, CNC, FMS, LAN, Robotics and automated inspection, and soft technologies studied were: TQM, JIT, SQC, MRP, MRP II, and manufacturing cells.

Selected findings are: CAD, …

Kinetics Of Clustering In Traffic Flows, E. Ben-Naim, P. L. Krapivsky, S. Redner

Eli Ben-Naim

We study a simple aggregation model that mimics the clustering of traffic on a one-lane roadway. In this model, each ``car'' moves ballistically at its initial velocity until it overtakes the preceding car or cluster. After this encounter, the incident car assumes the velocity of the cluster which it has just joined. The properties of the initial distribution of velocities in the small velocity limit control the long-time properties of the aggregation process. For an initial velocity distribution with a power-law tail at small velocities, $\pvim$ as $v \to 0$, a simple scaling argument shows that the average cluster size …

De La Violencia Urbana A La Convivencia Ciudadana, Fernando Carrión Mena

Fernando Carrión Mena

No SE PUEDE DESCONOCER QUE EL problema de la violencia delincuencial, como fenómeno social que tiene expresión en las ciudades, existe desde tiempos inmemoriales y que, por tanto, no es nuevo, al grado que se podría decir que es consustancial a la ciudad. Tal afirmación nos debe llevar a replantear la tradicional aproximación que se ha hecho al tema ya lo urbano, desde aquellas metodologías que los interpretan como resultado de un conjunto de patologías.

Por ello quizá sería mejor reconocer a la ciudad como un escenario de relaciones sociales. Así, la violencia urbana aparecería menos como «un problema y …

Non-Opsonic Attachment Of Bordetella Bronchiseptica Mediated By Cd11/Cd18 And Cell Surface Carbohydrates, Karen B. Register, Mark R. Ackermann, Marcus E. Kehrli Jr.

Mark R. Ackermann

Porcine atrophic rhinitis associated with Bordetella bronchiseptica is characterized by a severe inflammatory response in the mucosa of the nasal turbinates. Initial infiltrates of polymorphonuclear leukocytes (PMN) are followed by accumulations of mononuclear cells. In this report, we have investigated the interaction between porcine PMN and B. bronchiseptica. PMN incubated in PBS with a fluorescently labeled hemagglutinating porcine isolate, but not a non-hemagglutinating variant, had high levels of cell-associated fluorescence as determined by flow cytometry. Light microscopy indicated that most cell-associated bacteria were ingested. Transmission electron microscopy confirmed the presence of intracellular bacteria, which were contained within membrane-bound phagosomes. A …

Sixth U.S.-Japan Seminar On Polymer Synthesis: Macromolecular Design For Advanced Materials, Otto Vogl, Shiro Kobayashi

Otto Vogl

No abstract provided.

Use Today's Technology To Improve Customer Contact, Douglas J. Swanson Ed.D Apr

Douglas J. Swanson, Ed.D APR

No abstract provided.

The Battle That Disney Should Have Won, Neil A. Silberman

Neil A. Silberman

An oldie but goodie

Polymer Institute Slovak Academy Of Sciences Bratislava, Slovakia, Otto Vogl

Otto Vogl

No abstract provided.

64. Tibor Kelen, Otto Vogl

Otto Vogl

No abstract provided.

Cigarette Smoking: An Independent Risk Factor For Impotence?, David M. Mannino, R. Monina Klevens, W. Dana Flanders

David M. Mannino

The authors sought to determine whether current cigarette smoking was associated with impotence among middle-aged men. This is a secondary analysis of a cross-sectional survey of 4,462 US Army Vietnam-era veterans aged 31–49 years who took part in the Vietnam Experience Study in 1985–1986. The main outcome measurement was the odds ratio for reported impotence, which was calculated by comparing current smokers with nonsmokers while controlling for multiple confounders. The study sample consisted of 1,162 never smokers, 1,292 former smokers, and 2,008 current smokers. The prevalence of impotence was 2.2% among never smokers, 2.0% among former smokers, and 3.7% among …

The Spectral Center Of Gravity Effect And Auditory Filter Bandwidth, Marc Fagelson, Linda M. Thibodeau

Marc A. Fagelson

Low‐Temperature Phase Diagram Of Ybbipt, R. Movshovich, A. Lacerda, Paul C. Canfield, J. D. Thompson, Z. Fisk

Paul C. Canfield

Resistivity measurements are reported on the cubic heavy‐fermion compound YbBiPt at ambient and hydrostatic pressures to ≊19 kbar and in magnetic fields to 1 T. The phase transition at T c =0.4 K is identified by a sharp rise in resistivity. That feature is used to build low‐temperature H‐T and P‐Tphase diagrams. The phase boundary in the H‐T plane follows the weak‐coupling BCS expression remarkably well from T c to T c /4, while small hydrostatic pressure of ≊1 kbar suppresses the low‐temperature phase entirely. These effects of hydrostatic pressure and magnetic field on the phase transition are consistent with …

Mccolm’S Conjecture, Yuri Gurevich, Neil Immerman, Saharon Shelah

Neil Immerman

Gregory McColm conjectured that positive elementary inductions are bounded in a class K of finite structures if every (FO + LFP) formula is equivalent to a first-order formula in K. Here (FO + LFP) is the extension of first-order logic with the least fixed point operator. We disprove the conjecture. Our main results are two model-theoretic constructions, one deterministic and the other randomized, each of which refutes McColm’s conjecture.

Electron Energy Loss In Oxygen Plasmas, G. A. Victor, John C. Raymond, Jane L. Fox

Jane L. Fox

The results of calculations of the energy deposition of energetic electrons in oxygen plasmas are given. In a pure oxygen plasma even with large fractional ionization, much of the electron energy results in the production of additional ionization and excited electronic states. Results are given for separate calculations using theoretical and experimental cross sections for the important O I excitations of ¹S and ¹D because the theoretical and experimental data are not in agreement. These results are useful for understanding the spectra of oxygen-rich supernova remnants.

How Radical Is Lani Guinier? , Michael E Lewyn

Michael E Lewyn

In 1993, Lani Guinier was nominated to head the Justice Department's Civil Rights Division. Her nomination was withdrawn after she was accused of being too liberal, if not radical, on issues relating to voting rights law. This article discusses her views, and finds that her writings were not clear enough to either support or debunk the accusations of radicalism.

La Violencia Urbana, Fernando Carrión Mena

Fernando Carrión Mena

El predominio de la población urbana (58%), el incremento del número de ciudades (196 municipios) y la generalización de la urbanización en el territorio nacional, llevan a concluir que el Ecuador se ha convertido en un país de ciudades. Esta realidad trae nuevos problemas, entre los cuales se debe mencionar el incremento significativo de la violencia delictiva urbana.

La crisis económica y las políticas implantadas, generalizan la inseguridad social y económica, y contribuyen a reducir los mecanismos de representación, a limitar los espacios de solución de los conflictos, a mercantilizar las relaciones sociales y a restringir las manifestaciones culturales, propias …

Using Biodiversity Data To Assess Species--Habitat Relationships In Glacier National Park, Montana, Diane M. Debinski, Peter F. Brussard

Diane M. Debinski

Biodiversity surveys are becoming increasingly popular. However, standard analysis techniques for these data have not yet been developed. This paper explores the use of multivariate ordination techniques for assessing species—habitat relationships using biodiversity data. The research was conducted in Glacier National Park, Montana, and birds and butterflies were chosen as the taxonomic groups of study. Biodiversity assessment sites were established throughout a range of habitats and monitored from 1987 through 1989. Presence/absence sampling over the total number of sampling sites was used to classify species commonness and rarity. Approximately 86% of the historically recorded butterflies and 70% of the historically …

Measurements Of The (E,E’Pπ-) Reaction On Nuclei In The Nucleon Resonance Region, L Elouadrhiri, R A. Miskimen, J Button-Shafer, P Degtyarenko,, Gerald Alvin Peterson, S Shuvalov, K Wang

Gerald Alvin Peterson

Nucleon resonances beyond the Δ(1232) have been observed in complex nuclei. Measurements of the (e,e’pπ-) reaction, at an incident energy of 14.5 GeV with 1.1 GeV

65. Ferenc Tudos, Otto Vogl

Otto Vogl

No abstract provided.

Third Pacific Polymer Conference. Gold Coast - Australia, Otto Vogl, Graeme A. George

Otto Vogl

No abstract provided.

Polymer Science In Australia I. Sydney And Canberra, Otto Vogl, Donald H. Napper

Otto Vogl

No abstract provided.

A Characterization Of Sigma-Symmetrically Porous Symmetrical Cantor Sets, M. Evans, P. Humke, Karen Saxe

Karen Saxe

No abstract provided.

Measurements Of The Electric And Magnetic Form Factors Of The Proton From Q2=1.75 To 8.83 (Gev/C)2, L Andivahis, R S. Hicks, R A. Miskimen, Gerald Alvin Peterson, S Rokni

Gerald Alvin Peterson

The proton elastic form factors GEp(Q2) and GMp(Q2) have been extracted for Q2=1.75 to 8.83 (GeV/c)2 via a Rosenbluth separation to ep elastic cross section measurements in the angular range 13°≤θ≤90°. The Q2 range covered more than doubles that of the existing data. For Q2<4 >(GeV/c)2, where the data overlap with previous measurements, the total uncertainties have been reduced to < 14% in GEp and < 1.5% in GMp. Results for GEp(Q2) are consistent with the dipole fit GD(Q2)=(1+Q2/0.71)-2, while those for GMp(Q2)/μpGD(Q2) decrease smoothly from 1.05 to 0.92. Deviations from form factor scaling are observed up to 20%. The ratio Q2F2/F1 is observed to approach a constant value for Q2>3 (GeV/c)2. Comparisons are made to vector meson dominance, dimensional scaling, QCD sum rule, diquark, and constituent quark models, none of which fully characterize all the new data.

The Unsecured Creditor's Bargain: An Essay In Reply, Reprisal, Or Support?, F. Stephen Knippenberg

F. Stephen Knippenberg

No abstract provided.

Candidate Model Problems In Software Architecture, Mary Shaw, David Garlan, Robert Allen, Daneil Klein, John Ockerbloom, Curtis Scott, Marco Schumacher

Mary Shaw

The software architecture community would benefit from sharing a set of standard example problems. These would improve our ability to work out ideas, exhibit techniques, and compare results. The Software Architecture group at Carnegie Mellon has been assembling such a collection of problems. With this draft report we would like to open a discussion about suitable problems: what characteristics they should have, what specific problems would serve us well. To start that discussion, we present ten candidate problems and sketches of several distinct architectural approaches to two of them. We invite refinements and discussion of the problem list, the solution …

The Fantastic Science Fiction Of Maurice Renard, Arthur B. Evans

Arthur Bruce Evans

No abstract provided.

Gallistel’S The Organization Of Learning: This Is Not Creation Science, James Dougan

James Dougan

No abstract provided.

Evidence For A Disk In The Wind Of Hd 93521: Uv Line Profiles From An Axisymmetric Model., Richard Ignace

Richard Ignace

Recently it has been suggested (Massa 1992; Howarth & Reid 1993), from the C IV ultraviolet resonance line profile of HD 93521, that there is a high-speed component in the polar outflow from the star as well as a low-speed component in the equatorial regions. In this paper we present theoretical calculations of the line profiles that would be produced by such a model. We find from Hubble Space Telescope (HST) Goddard High Resolution Spectrograph (GHRS) observations of HD 93521 that the observed C IV profile can be produced if the star has an inclination angle very close to 90 …

Translation Of Maurice Renard's Article "On The Scientific-Marvellous Novel", Arthur B. Evans

Arthur Bruce Evans

No abstract provided.