Sphaleron transition rate in the classical 1+1 dimensional abelian Higgs model at finite temperature

We compute the sphaleron transition rate in the 1+1 dimensional abelian Higgs model at finite temperature, by real time simulation using the classical canonical ensemble.Comment: 3 pages to appear in the Proceedings of Lattice '93, Dallas, Texas, 12-16 October 1993, comes as a single postscript file (LaTeX source available from the authors), ITFA 93-3

Building Stronger Channel Relationships Through Information Sharing

Does sharing market information help channel partners to buildstronger mutual relationships? Is low initial trust really animpediment for further relationship development by means ofinformation sharing? How do connections with other competingchannel partners affect the relationship building process? Toaddress these questions, we conducted an experimental study.Our findings show that retailer information sharing helps todevelop higher quality supplier relationships. Interestingly,even if the initial level of trust in the retailer is low, therelationship quality substantially improves. In a morecompetitive situation the suppliers respond more favorably tothe retailer?s information-sharing initiative.experimental design;information-sharing;interfirm collaboration;marketing channels

Adiabatic reactor simulations of the reverse flow catalytic membrane reactor concept with Perovskite membranes

Abstract only

De visserij in Noorwegen : verslag van een studiereis

De zeevisserij in West-Europa heeft zowel ten aanzien van de vangstgebieden als te aanzien van afzet en conumptie een sterk internationaal karakter. De gegevens voor dit rapport zijn voor het grootste gedeelte verzameld tijdens een studiereis naar Noorwegen

The Sizes of Candidate z∼9−10z\sim9-10 Galaxies: confirmation of the bright CANDELS sample and relation with luminosity and mass

Recently, a small sample of six $z\sim9-10$ candidates was discovered in CANDELS that are $\sim10-20\times$ more luminous than any of the previous $z\sim9-10$ galaxies identified over the HUDF/XDF and CLASH fields. We measure the sizes of these candidates to map out the size evolution of galaxies from the earliest observable times. Their sizes are also used to provide a valuable constraint on whether these unusual galaxy candidates are at high redshift. Using galfit to derive sizes from the CANDELS F160W images of these candidates, we find a mean size of 0.13$\pm$0.02" (or 0.5$\pm$0.1 kpc at $z\sim9-10$). This handsomely matches the 0.6 kpc size expected extrapolating lower redshift measurements to $z\sim9-10$, while being much smaller than the 0.59" mean size for lower-redshift interlopers to $z\sim9-10$ photometric selections lacking the blue IRAC color criterion. This suggests that source size may be an effective constraint on contaminants from $z\sim9-10$ selections lacking IRAC data. Assuming on the basis of the strong photometric evidence that the Oesch et al. 2014 sample is entirely at $z\sim9-10$, we can use this sample to extend current constraints on the size-luminosity, size-mass relation, and size evolution of galaxies to $z\sim10$. We find that the $z\sim9-10$ candidate galaxies have broadly similar sizes and luminosities as $z\sim6$-8 counterparts with star-formation-rate surface densities in the range of $\rm \Sigma_{SFR}=1-20\, M_\odot~ yr^{-1}\, kpc^{-2}$. The stellar mass-size relation is uncertain, but shallower than those inferred for lower-redshift galaxies. In combination with previous size measurements at z=4-7, we find a size evolution of $(1+z)^{-m}$ with $m=1.0\pm0.1$ for $>0.3L^*_{z=3}$ galaxies, consistent with the evolution previously derived from $2 < z < 8$ galaxies.Comment: 9 figures, 5 tables, accepted by Ap

Working on societal relevance: Experiences from a research evaluation at the International Institute of Social Studies

Universities are faced with changing methods of research evaluation. The revised Standard Evaluation Protocol in the Netherlands has now explicitly and prominently taken into account societal relevance. This shift has profound implications on the institutional research in higher education and the type of data that research groups need to collect. The International Institute of Social Studies performed quite well in the last research assessment with among others a score of (1) World leading/excellent on societal relevance. In the paper we describe how we have tried to collect the evidence for this assessment. We are interested to discuss the possibility of developing a methodology for societal relevance

Resolving Exceptional Configurations

In lattice QCD with Wilson fermions, exceptional configurations arise in the quenched approximation at small quark mass. The origin of these large previously uncontrolled lattice artifacts is identified. A simple well-defined procedure (MQA) is presented which removes the artifacts while preserving the correct continuum limit.Comment: Talk presented by E. Eichten at Lattice 97, Edinburgh(UK), July97. 6 pages, LaTeX, 1 table, 5 figure

Epigaeic spiders (Araneae) of small, man-made habitats on the Lahnberge Campus of the Philipps-University Marburg (Hesse, Germany)

During May and June 1994, 45 pitfall traps were exposed in three types of small, urban habitats: traffic islands, flat gravel roofs and courtyards ranging from 65 to 1.800m2 . The three habitat types differ in their exposure to sun and wind creating microclimatic conditions similar to a variety of natural habitats, i.e. grassland, rocky outcrops and forests. In total, 2.163 spiders (147 juveniles) were caught, belonging to 61 species in 16 families. A cluster analysis showed distinctively different spider assemblages for the three habitat types. Traffic islands are inhabited by a typical open land community. Dominating species are Alopecosa pulverulenta, Pardosa pullata and Pachygnatha degeeri. Gravel roofs show high numbers of salticids, in particular Euophrys lanigera. Courtyards lack dominant species and show a high number of species naturally occurring in forest habitats. The activity density on the gravel roofs and in the courtyards does not appear to be high enough to support stable populations.Im Mai und Juni 1994 wurden im Universitätsgelände der Philipps Universität auf den Lahnbergen bei Marburg/Hessen drei unterschiedliche anthropogene Stadthabitate mit der Hilfe von Bodenfallen untersucht: Verkehrsinseln, Kiesdächer und Innenhöfe (Flächengröße 65-1.8OOm2). Die drei Habitattypen unterschieden sich in ihrer Sonnen- und Windexposition und zeigen Ähnlichkeit mit verschiedensten natürlichen Lebensraumen: Offenland, Felsbereiche, fließgewässerbegleitende Kiesinseln und Wald. Insgesamt wurden 2.163 Spinnen (davon 147 Jungtiere) gefangen. Sie gehörten zu 61 Arten in 16 Familien. Eine Clusteranalyse ergab klar unterschiedliche Spinnengemeinschaften für die drei Habitattypen. Verkehrsinseln werden van einer typischen Offenlandgesellschaft besiedelt. Es dominieren Alopecosa pulverulenta, Pardosa pullata und Pachygnatha degeeri. Kiesdächerzeigen vergleichsweise hohe Aktivitätsdichten von Springspinnen (insbesondere Euophrys lanigera ).lnnenhöfe besitzen keine Charakterarten. Sie werden vor allem von Waldarten besiedelt. Die Aktivitätsdichten auf den Kiesdächern und in den Innenhöfen scheinen nicht hoch genug zu sein, um stabile Populationen zu belegen