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New Code (new + code)
Selected AbstractsNew techniques for indexing: N-TREOR in EXPOJOURNAL OF APPLIED CRYSTALLOGRAPHY, Issue 4 2000Angela Altomare Indexing of a powder diffraction pattern is still a critical point in procedures aiming at solving crystal structures from powder data. New code has been associated to the program TREOR90 in order to define an efficient peak search procedure, to modify the crystallographic decisions coded into TREOR90 to make it more exhaustive, to refine the selected unit cell automatically, and to make the entire procedure user friendly, via a graphical interface. The new program, called N-TREOR, has been integrated into the package EXPO to create a suite of programs able to provide a structural model from the analysis of the experimental pattern. N-TREOR is also available as a stand-alone program. [source] Cross-border insolvency in Belgian Private International LawINTERNATIONAL INSOLVENCY REVIEW, Issue 1 2006Eric Dirix Belgian PIL-rules regarding insolvency proceedings were recently changed as a result of the enactment of the new Code on Private International Law (2004). The new provisions aim to harmonise domestic rules with the system and concepts of the Insolvency Regulation. Copyright © 2006 John Wiley & Sons, Ltd. [source] AVA embodies leading-edge governance in new Code of ConductAUSTRALIAN VETERINARY JOURNAL, Issue 8 2003Article first published online: 10 MAR 200 No abstract is available for this article. [source] Anwendung der neuen Stahlbetonnormen für die Bemessung von TunnelinnenschalenBETON- UND STAHLBETONBAU, Issue 2 2004Bruno Mattle Dipl.-Ing. Abstract Die in den letzten Jahren in der Bundesrepublik Deutschland und in Österreich errichteten Verkehrstunnel wurden i. a. zweischalig, d. h. mit einer Spritzbetonaußenschale und einer Innenschale aus unbewehrtem Beton oder Stahlbeton hergestellt. Die Bemessung der Innenschalen erfolgte unter Anwendung der Normen DIN 1045 [1] und ÖN B 4200 [2]. Während die neuen Normen wie EC 2 [3], DIN 1045-1 [4] und ÖN B 4700 [5] im Hochbau schon seit längerem Anwendung finden, ist deren Anwendung für die Bemessung von Tunnelschalen im wesentlichen noch Neuland. Dies betrifft insbesondere die Anwendung des Teilsicherheitskonzeptes und die Möglichkeit, die Schnittgrößen unter Anwendung nichtlinearer Stoffgesetze zu ermitteln. Im vorliegenden Beitrag wird die Problematik dargestellt und anhand von Beispielen der Einfluß unterschiedlicher Annahmen aufgezeigt. Design of Final Tunnel Linings according to the new Codes for Reinforced Concrete The traffic tunnels which have been constructed during the last few years in Germany and Austria in general have an initial shotcrete lining and a final, cast in place reinforced or unreinforced concrete lining. The structural design of the final linings has been based on specific standards from the clients and on the national codes DIN 1045 [1] and ÖN B 4200 [2]. While the new codes EC 2 [3], DIN 1045-1 [4] and ÖN B 4200 [5] have been widely used for the structural design of buildings for a while, their application for the design of tunnel linings is more or less a new field. In particular this is valid for using nonlinear material laws and the partial safety factor concept. In the presented paper this topic is discussed and the consequences of different assumptions are shown on specific examples. [source] Object combining: a new aggressive optimization for object intensive programsCONCURRENCY AND COMPUTATION: PRACTICE & EXPERIENCE, Issue 5-6 2005Ronald Veldema Abstract Object combining tries to put objects together that have roughly the same life times in order to reduce strain on the memory manager and to reduce the number of pointer indirections during a program's execution. Object combining works by appending the fields of one object to another, allowing allocation and freeing of multiple objects with a single heap (de)allocation. Unlike object inlining, which will only optimize objects where one has a (unique) pointer to another, our optimization also works if there is no such relation. Object inlining also directly replaces the pointer by the inlined object's fields. Object combining leaves the pointer in place to allow more combining. Elimination of the pointer accesses is implemented in a separate compiler optimization pass. Unlike previous object inlining systems, reference field overwrites are allowed and handled, resulting in much more aggressive optimization. Our object combining heuristics also allow unrelated objects to be combined, for example, those allocated inside a loop; recursive data structures (linked lists, trees) can be allocated several at a time and objects that are always used together can be combined. As Java explicitly permits code to be loaded at runtime and allows the new code to contribute to a running computation, we do not require a closed-world assumption to enable these optimizations (but it will increase performance). The main focus of object combining in this paper is on reducing object (de)allocation overhead, by reducing both garbage collection work and the number of object allocations. Reduction of memory management overhead causes execution time to be reduced by up to 35%. Indirection removal further reduces execution time by up to 6%. Copyright © 2005 John Wiley & Sons, Ltd. [source] DIESEL-MP2: A new program to perform large-scale multireference-MP2 computations,JOURNAL OF COMPUTATIONAL CHEMISTRY, Issue 10 2006Patrick Musch Abstract This article presents a new MR-MP2 code (Multi- Reference Møller,Plesset 2nd order) suitable for the computation MR-MP2 energies of extended systems with strong near degeneracy effects (e.g., open shell systems). It is based on the DIESEL program package developed by Hanrath and Engels. Due to improved algorithms the new code is able to handle systems with 400,500 basis functions and more than 100 electrons. The code is made for parallel computers with distributed memory, but can also be run on local machines. It possesses two integral interfaces (MOLCAS, TURBOMOLE). The algorithms are briefly introduced and timings for the Neocarzinostatin chromophore are presented. The efficiencies of the codes obtained with Intel or GNU compilers are compared. © 2006 Wiley Periodicals, Inc. J Comput Chem 27: 1055,1062, 2006 [source] General relativistic force-free electrodynamics: a new code and applications to black hole magnetospheresMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Issue 4 2006Jonathan C. McKinney ABSTRACT The force-free limit of magnetohydrodynamics (MHD) is often a reasonable approximation to model black hole and neutron star magnetospheres. We describe a general relativistic force-free (GRFFE) formulation that allows general relativistic magnetohydrodynamic (GRMHD) codes to directly evolve the GRFFE equations of motion. Established, accurate and well-tested conservative GRMHD codes can simply add a new inversion piece of code to their existing code, while continuing to use all the already-developed facilities present in their GRMHD code. We show how to enforce the E·B= 0 constraint and energy conservation, and we introduce a simplified general model of the dissipation of the electric field to enforce the B2,E2 > 0 constraint. We also introduce a simplified yet general method to resolve current sheets, without much reconnection, over many dynamical times. This formulation is incorporated into an existing GRMHD code (harm), which is demonstrated to give accurate and robust GRFFE results for Minkowski and black hole space,times. [source] Über den Weg zur neuen deutschen Erdbebennorm DIN 4149: 2005-04BAUTECHNIK, Issue 8 2005Einar Keintzel Dr.-Ing. Es werden Entwicklungen dargestellt, die zur Erarbeitung der neuen deutschen Erdbebennorm DIN 4149: 2005-04 auf der Grundlage von Eurocode 8 geführt haben. Dazu gehören neben einer Neufassung der Erdbebenzonenkarte die vollständige Überarbeitung von Einwirkungs- und Bemessungskonzepten und Konstruktionsregeln. Abschließend werden einige von Eurocode 8 abweichende Besonderheiten der neuen Norm aufgezeigt, deren Erhalt auch bei einem späteren Ersatz von DIN 4149: 2005-04 durch EC 8 empfohlen wird. About the way to the new German Seismic Code DIN 4149: 2005-04. Developments are presented, which have lead to the elaboration of the new German Seismic Code DIN 4149: 2005-04 on the basis of Eurocode 8. So beside of a new version of the seismic zoning map a complete revision of the definition of the seismic action, of safety verifications and of detailing rules is performed. Finally some particularities of the new code, differing from Eurocode 8, are shown, the maintenance of which is recommended also in case of a later substitution of DIN 4149: 2005-04 by EC 8. [source] Einwirkungen nach DIN-Fachbericht 101BETON- UND STAHLBETONBAU, Issue 8 2004Lothar Weinreich Dipl.-Ing. Nach der Einführung der DIN-Fachberichte sind alle Bauwerksentwürfe nach dem neuen Regelwerk zu bearbeiten. Der Beitrag beschreibt, in welchen wesentlichen Punkten sich Änderungen bei der Entwurfsbearbeitung gegenüber dem bisherigen Vorgehen ergeben. Für die Vorberechnung von Massivbrücken in Längsrichtung werden die maßgebenden Einwirkungen nach altem und neuem Vorschriftenwerk gegenübergestellt. Es wird außerdem gezeigt, daß die Neuerungen bei den anzusetzenden Einwirkungen in einigen Fällen Änderungen bei den bislang gewählten Bauwerkssystemen und -abmessungen erforderlich machen. Die gegenüber einer Bearbeitung nach DIN-Normen besonders zu beachtenden Punkte werden zusammengestellt. Actions according to DIN-Fachbericht 101: Effects on the Design of Concrete Road Bridges After the introduction of the DIN-Fachberichte all concept designs have to follow the new code of practice. This article describes in which the essential points there are modifications in the concept design compared to the previous actions. For the precalculation of concrete bridges for longitudinal direction the essential actions according to old and new code of practice are compared. It is shown that the innovations of the calculated actions in some cases can make changes in the building structure and the dimension necessary as well. [source] An efficient out-of-core multifrontal solver for large-scale unsymmetric element problemsINTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, Issue 7 2009J. K. Reid Abstract In many applications where the efficient solution of large sparse linear systems of equations is required, a direct method is frequently the method of choice. Unfortunately, direct methods have a potentially severe limitation: as the problem size grows, the memory needed generally increases rapidly. However, the in-core memory requirements can be limited by storing the matrix and its factors externally, allowing the solver to be used for very large problems. We have designed a new out-of-core package for the large sparse unsymmetric systems that arise from finite-element problems. The code, which is called HSL_MA78, implements a multifrontal algorithm and achieves efficiency through the use of specially designed code for handling the input/output operations and efficient dense linear algebra kernels. These kernels, which are available as a separate package called HSL_MA74, use high-level BLAS to perform the partial factorization of the frontal matrices and offer both threshold partial and rook pivoting. In this paper, we describe the design of HSL_MA78 and explain its user interface and the options it offers. We also describe the algorithms used by HSL_MA74 and illustrate the performance of our new codes using problems from a range of practical applications. Copyright © 2008 John Wiley & Sons, Ltd. [source] Mindscapes And Internet-mediated CommunicationJOURNAL OF COMPUTER-MEDIATED COMMUNICATION, Issue 3 2002John Gammack Cultures are considered to be epistemologically heterogeneous, and it is assumed that epistemologically similar individuals exist across distinct cultures. Epistemological type is viewed as prior to, and transcendent of, nationality and culture. Identifying a shared epistemological basis for communication will be more likely to succeed in dialogical contexts where conformity to prevailing national stereotypes may fail. Two levels of communication are distinguished: explicate (here seen as conformity to social and cultural symbolic norms and conventions), and implicate (the level at which implicit, abstract communicative intention originates). Cyberspatial interactions potentially undermine normative cultural influences and permit multicultural or transcultural environments in which new codes extending from epistemological types (rather than cultural) become possible, limited only by media potential and symbolization itself. Drawing upon Maruyama's (1980) theory, implications for an alternative to the homogenization of verbal communication, and potential elements of codes for universal understandings are considered. [source] Status and future of MUSEASTRONOMISCHE NACHRICHTEN, Issue 9-10 2008S. Harfst Abstract We present MUSE, a software framework for combining existing computational tools from different astrophysical domains into a single multi-physics, multi-scale application. MUSE facilitates the coupling of existing codes written in different languages by providing inter-language tools and by specifying an interface between each module and the framework that represents a balance between generality and computational efficiency. This approach allows scientists to use combinations of codes to solve highly-coupled problems without the need to write new codes for other domains or significantly alter their existing codes. MUSE currently incorporates the domains of stellar dynamics, stellar evolution and stellar hydrodynamics for studying generalized stellar systems. We have now reached a "Noah's Ark" milestone, with (at least) two available numerical solvers for each domain. MUSE can treat multi-scale and multi-physics systems in which the time- and size-scales are well separated, like simulating the evolution of planetary systems, small stellar associations, dense stellar clusters, galaxies and galactic nuclei. In this paper we describe two examples calculated using MUSE: the merger of two galaxies and an N -body simulation with live stellar evolution. In addition, we demonstrate an implementation of MUSE on a distributed computer which may also include special-purpose hardware, such as GRAPEs or GPUs, to accelerate computations. The current MUSE code base is publicly available as open source at http://muse.li. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [source] | ||||||||||||||||