The Chroma Software System for Lattice QCD

We describe aspects of the Chroma software system for lattice QCD calculations. Chroma is an open source C++ based software system developed using the software infrastructure of the US SciDAC initiative. Chroma interfaces with output from the BAGEL assembly generator for optimised lattice fermion kernels on some architectures. It can be run on workstations, clusters and the QCDOC supercomputer.Comment: poster presented at Lattice2004(machines

New approach for estimation of incident energy on high voltage level

Abstract The purpose of this paper is to show a new calculation model, which is able to calculate the incident energy in any places near an electric arc in case of high voltage, without neglecting of length and position of the electric arc. This method is developed especially for the electric transmission network above 35 kV and several meters of gap distances. It would be used to estimate the thermal load of a power line worker close an initiated electric arc during live-line maintenance by bare-hand and hot stick method as well

A lepkész Schmidt Antal (1880–1966): a muzeológus és az igazgató öröksége a Magyar Természettudományi Múzeumban = The lepidopterist Dr. Antal Schmidt (1880–1966): his legacy as curator and director in the Hungarian Natural History Museum

Dr Antal Schmidt, lepidopterist by scientifi c interest, worked as staff member of the Hungarian Natural History Museum between the period 1903–1939. Personal data of Schmidt are given, with a list of all his 22 publications and 25 Lepidoptera names proposed as new for science. On the basis of archive records and documents the alphabetic list of 598 personalities he corresponded with is also compiled indicating the intensity of letter exchange. People whom Schmidt was in most intensive contact with, are briefl y presented. With 12 fi gures

Description of two new species of the groundstreak genus Arzecla Duarte et Robbins, 2010 (Lepidoptera: Lycaenidae: Theclinae: Eumaeini) from Colombia = Описание двух новых видов рода Arzecla Duarte et Robbins, 2010 (Lepidoptera: Lycaenidae: Theclinae: Eumaeini) из Колумбии

Two species of Arzecla Duarte et Robbins, 2010 are described from Colombia, namely: Arzecla straboris Bálint, sp. n. (type locality: El Aguila, Manizales, Caldas), and Arzecla straelena Bálint, sp. n. (type locality: Cerro Ingrumá, Riosucio, Caldas), both on the basis of a single male specimen. New species possess a combination of characters, unique in the genus, hence they are easy to identify. A  checklist with biogeographic and country indications and a key for identification based on wing characters for all described Arzecla species is provided. Specimens examined for comparative purpose are listed as an Appendix. Eleven figures

Status and Future Perspectives for Lattice Gauge Theory Calculations to the Exascale and Beyond

In this and a set of companion whitepapers, the USQCD Collaboration lays out a program of science and computing for lattice gauge theory. These whitepapers describe how calculation using lattice QCD (and other gauge theories) can aid the interpretation of ongoing and upcoming experiments in particle and nuclear physics, as well as inspire new ones.Comment: 44 pages. 1 of USQCD whitepapers

Triangle percolation in mean field random graphs -- with PDE

We apply a PDE-based method to deduce the critical time and the size of the giant component of the ``triangle percolation'' on the Erd\H{o}s-R\'enyi random graph process investigated by Palla, Der\'enyi and VicsekComment: Summary of the changes made: We have changed a remark about k-clique percolation in the first paragraph. Two new paragraphs are inserted after equation (4.4) with two applications of the equation. We have changed the names of some variables in our formula