A lapse in constructive dialogue: The Journal's responsibility.

Using the concept of constructive dialogue (Altman & Davies, 2003), the author believes there has been a serious lapse in responsibility in Mills' (2006; see record 2006-03254-016) response to commentaries published in Psychoanalytic Psychology. He believes that there was a failure of editorial responsibility to maintain a basic level of scholarly, as opposed to ad hominem, discussion in these pages. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

PEMPIs: A New Methodology for Modeling and Prediction of MPI Programs Performance

The evaluation and prediction of parallel programs performance are becoming more and more important, so that they require appropriate techniques to identify the factors which influence the application execution time and also the way they interact. In this paper, we present some contributions of our research in this area by describing PEMPIs, a new methodology applied to the performance analysis and prediction of MPI programs. A new task graph helps us both to understand details of the application and to increase the accuracy of the prediction models. The proposed techniques are detailed and tested through the modeling of a complete application. PEMPIs efficiency has been proved by the results of this application modeling—most tests executed in a cluster of computers showed errors up to 10.     

The Overdetermination Argument Revisited

In this paper I discuss a famous argument for physicalism – which some authors indeed regard as the only argument for it – the overdetermination argument. In fact it is an argument that does not establish that all the entities in the world are physical, but that all those events that enter into causal transactions with the physical world are physical. As mental events seem to cause changes in the physical world, the mind is one of those things that fall within the scope of the argument. Here I analyze one response to the overdetermination argument that has acquired some popularity lately, and which consists in saying that what mental events cause are not physical effects. I try to show that recent attempts to develop this response are not successful, but that there may be a coherent way of doing so. I also try to show that there seems to be a philosophical niche in which this way might fit.     

Concurrent C语言单处理机版本的实现

Concurrent C是一种支持并发程序设计的语言,它是C语言的一个超集。本文讨论Concurrent C语言在运行XENIX或UNIX操作系统的单处理机上的实现。     

过机泥沙处理——多泥沙河流上的小水电站水轮机设计所采取的相应措施

多泥沙河流上的低水头小水电站，过机泥沙对水轮机的影响不容忽视，本文论述了阎王鼻子电站过机泥沙情况及采取的措施。     

A multilevel parallel solver for block tridiagonal and banded linear systems

This paper describes an efficient algorithm for the parallel solution of systems of linear equations with a block tridiagonal coefficient matrix. The algorithm comprises a multilevel LU-factorization based on block cyclic reduction and a corresponding solution algorithm.

The paper includes a general presentation of the parallel multilevel LU-factorization and solution algorithms, but the main emphasis is on implementation principles for a message passing computer with hypercube topology. Problem partitioning, processor allocation and communication requirement are discussed for the general block tridiagonal algorithm.

Band matrices can be cast into block tridiagonal form, and this special but important problem is dealt with in detail. It is demonstrated how the efficiency of the general block tridiagonal multilevel algorithm can be improved by introducing the equivalent of two-way Gaussian elimination for the first and the last partitioning and by carefully balancing the load of the processors. The presentation of the multilevel band solver is accompanied by detailed complexity analyses.

The properties of the parallel band solver were evaluated by implementing the algorithm on an Intel iPSC hypercube parallel computer and solving a larger number of banded linear equations using 2 to 32 processors. The results of the evaluation include speed-up over a sequential processor, and the measure values are in good agreement with the theoretical values resulting from complexity analysis. It is found that the maximum asymptotic speed-up of the multilevel LU-factorization using p processors and load balancing is approximated well by the expression (p +6)/4.

Finally, the multilevel parallel solver is compared with solvers based on row and column interleaved organization.     

Assignment as the sole means of updating objects

It is possible, by appropriate programming language extensions, to use the assignment statement as the sole means of changing the value of a variable, thereby eliminating the need to modify routine arguments by output parameters. Several suggestions are made to enhance the syntax and semantics of routine definition and assignment to maintain notational convenience and efficient execution normally associated with output parameters. Finally, an almost complete implementation of the ideas is presented in C.     

东津水电站引水系统施工综述

东津水电站引水系统工程地质条件复杂，施工干扰大，安全渡汛难，工期紧。引水隧洞洞身段采用新奥法施工，先打通上导洞，进口前４０ｍ分段开挖，分段衬砌，进水塔压扳采用２７榀门字钢架支承模板，塔身应用悬胃桁架式组合模板浇筑砼。汛期利用永久闸门挡水渡汛等方案和措施，从而排除了施工干扰，确保了引水系统工程安全渡汛和安全施工，莫定了东津水电站提前蓄水发电的基础，同时取得较好的经济效益和社会效益。     

加快采金船过通道的方法

许多矿山都会遇到采金船过通道情况,如何能够加快船过通道的速度,为船的生产盈得时间是这里介绍的方法,同时介绍了两个矿山用不同方法过通道的实践.