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Medium 9781601322388

Parallelization of a Multi-physics Code

Hamid R. Arabnia, George A. Gravvanis, George Jandieri, Ashu M. G. Solo, Fernando G. Tinetti CSREA Press PDF

24

Int'l Conf. Scientific Computing | CSC'13 |

Parallelization of a Multi-physics Code

William Dai, A.J. Scannapieco, Frederick Cochran, James Painter, Chong Chang

Los Alamos National Laboratory, Los Alamos, New Mexico, United States

Abstract - Roxane is a code recently developed at Los

Alamos National Laboratory for multi-physics simulations.

The physics capabilities include hydrodynamics, material mixing, radiation, magnetohydrodynamics, etc. This document is to present the main physics capability, basic data structures, parallelization, and IO. The focus will be on parallization. The data structures include data layer-out and adaptive mesh refinement. Roxane is in the stage of active development, and some of material presented here will possibly be changed in the near future.

visualization, meshes with AMR, unstructured meshes, and variables defined on the meshes are directly written into files.

Keywords: numerical simulation, multiphysics, parallel

In Roxane, hydrodynamics is described by the Euler equation.

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Medium 9781780428475

L’IDEAL GREC

Edmund von Mach Parkstone International PDF

L’IDEAL GREC

T

andis que Phidias l’Athénien s’efforçait d’exprimer sa vision des dieux et des hommes à leur image, certains de ses contemporains choisissaient une autre voie. Selon eux, un corps est un corps, beau en soi et méritant un examen minutieux. Leur interrogation n’était donc pas « Quel est le concept le plus noble qu’un corps puisse exprimer ? », mais « Quel est le meilleur mode de représentation du corps lui-même ? » Les hommes comme Phidias et ses proches collaborateurs n’avaient probablement aucune idée du meilleur support pour sculpter le corps humain, mais la profondeur de leurs pensées ennoblissait le médium choisi. Dans les mains d’hommes moins talentueux que Phidias, sa technique aurait pu mener à des échecs, si elle n’avait pas été associée à l’influence positive d’une autre école.

Le chef de cette école était Polyclète d’Argos, un homme qui n’avait pas son égal en sciences et en savoir-faire, mais qui était impatient de découvrir l’étendue des idées menant l’homme à se surpasser. Selon M. Ruskin,

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Medium 9781855759930

CHAPTER FIVE. Working with groups affected by the Troubles

Jim Campbell Karnac Books ePub

Group processes are powerful vehicles for people to commit destructive acts without a recognition of the human effects of their action. Freud brought our attention to these processes when he wrote of the herd or gang instinct, whereby a group becomes so possessed with an idea that any destructive act is possible. Bion (1959b) took these ideas forward and describes three destructive processes that are characteristic of negative groups. He suggested that some groups can be in a work group mode similar to depressive position functioning, where people are engaging in a rational and thoughtful way to find a constructive and non-psychotic resolution to their problems. In contrast, a negative group is characterized by three states of mind. First, there is a state where group members depend on the leader for all the answers (basic assumption dependency). Second, they pair up to provide a third personality to overthrow the group leader (basic assumption pairing). Here the Oedipal impulse, which refers to the Greek myth of the son wishing to overthrow his father to join with his mother, is acted out. Britton et al . (1989) have written on the clinical implications of this. The relevance of the concept here is to highlight the emotional surge from a group to get rid of the leader and replace it with one of its own. This phantasy is acted out through two people pairing to form a couple, producing a new baby which replaces the leader. The third state of mind is referred to as the fight-flight. There is a wish for group members either to fight with each other or to flee.

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Medium 9780253010803

11. Lessons for Palestine from Northern Ireland: Why George Mitchell Couldn’t Turn Jerusalem into Belfast

Rochelle Davis Indiana University Press ePub

 

Why George Mitchell Couldn’t Turn Jerusalem into Belfast

ALI ABUNIMAH

I formed the conviction that there is no such thing as a conflict that can’t be ended. Conflicts are created, conducted, and sustained by human beings. They can be ended by human beings. I saw it happen in Northern Ireland, although, admittedly, it took a very long time. I believe deeply that with committed, persevering, and patient diplomacy, it can happen in the Middle East.

—George Mitchell, Obama administration Middle East envoy, 22 January 2009

During Israel’s December 2008/January 2009 invasion of the Gaza Strip, which killed more than 1,400 Palestinians, the vast majority civilians,1 veteran Irish journalist Patrick Cockburn reported that Israeli society reminded him “more than ever of the unionists in Northern Ireland in the late 1960s.” Like Israelis, he wrote, unionists were a community “with a highly developed siege mentality which led them always to see themselves as victims even when they were killing other people. There were no regrets or even knowledge of what they inflicted on others and therefore any retaliation by the other side appeared as unprovoked aggression inspired by unreasoning hate.”2

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Medium 9780253015143

4 The Naturalization of Intimate Partner Violence

Robert Lorway Indiana University Press ePub

I am loving those straight guys—the rough ones, you know. [But] if you ask them to put on the condom, they will give you a smack, [they’ll] beat you. But I just love them, I don’t know why. It’s just, it’s how I feel inside.

—Tuli

This chapter continues the story of what happens when the everyday practices of freedom inspired by the Rainbow Project are confronted with local forms of masculine domination. TRP’s empowerment strategies, which celebrate male femininities, compel youths to liberate themselves by embracing their sexual desires and resisting the gendered terms of ideal citizenship.1 Yet Tuli’s words of uncontrollable and unexplainable desire, above, expose an irony at play in LGBT rights discourses that strive to free the desires of feminine males: they inadvertently reinforce the naturalization of oppression they encounter in sexual relationships with masculine “straight men.” TRP’s self-discovery programs obscure the violent ways that SWAPO’s antihomosexual nationalist rhetoric configures male-male sexual intimacies in gender-oppositional terms. At the same time, the physical violence wrought by these nationalisms as they live out in the erotic relationships between masculine and feminine males is most evident.

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