Two-Dimensional Nonlinear Analysis of Long Cables

A simple finite-difference iterative model is presented here for the nonlinear analysis of a long inclined cable due to its self-weight and other concentrated loads in between. The input requires the end coordinates, area of cross section, modulus of elasticity, and initial tension of the cable. If the ends of the cable are subjected to displacements, the tension in the cable varies nonlinearly and the new deformed shape is computed using an iterative procedure. Unlike finite-element methods, initial cable geometry is not required here, and the method automatically computes the initial geometry even with concentrated loads.     

Neurodynamic programming: a case study of the traveling salesman problem

The paper focuses on the study of solving the large-scale traveling salesman problem (TSP) based on neurodynamic programming. From this perspective, two methods, temporal difference learning and approximate Sarsa, are presented in detail. In essence, both of them try to learn an appropriate evaluation function on the basis of a finite amount of experience. To evaluate their performances, some computational experiments on both the Euclidean and asymmetric TSP instances are conducted. In contrast with the large size of the state space, only a few training sets have been used to obtain the initial results. Hence, the results are acceptable and encouraging in comparisons with some classical algorithms, and further study of this kind of methods, as well as applications in combinatorial optimization problems, is worth investigating.     

四川建设抽水蓄能电站的必要性浅析

本文以四川电网近几年运行实际统计，分析阐明随着国民经济和社会发展，人民生活的不断改善，必须带来电网负荷率逐渐降低，峰谷差越来越大的客观规律性，只有建设机动灵活的抽水蓄能电站，才能充分利用水能资源，提高电网供电可靠性，从而获得电网和社会巨大的效益。     

Representation of conditional probability on a quantum logic

 In this paper we describe conditional probabilities as difference set. The main idea is that a system is in same state and from this state is can get to another state if there are fulfield some properties. In other words we have a partial binary operation ⊖ such that the operation ⊖ can be interpreted as a change of a state. If we put some logical questions about change of states on this we get the structure which is called a difference set.     

The relational self: An interpersonal social-cognitive theory.

The authors propose an interpersonal social-cognitive theory of the self and personality, the relational self, in which knowledge about the self is linked with knowledge about significant others, and each linkage embodies a self-other relationship. Mental representations of significant others are activated and used in interpersonal encounters in the social-cognitive phenomenon of transference (S. M. Andersen & N. S. Glassman, 1996), and this evokes the relational self. Variability in relational selves depends on interpersonal contextual cues, whereas stability derives from the chronic accessibility of significant-other representations. Relational selves function in if-then terms (W. Mischel & Y. Shoda, 1995), in which ifs are situations triggering transference, and thens are relational selves. An individual's repertoire of relational selves is a source of interpersonal patterns involving affect, motivation, self-evaluation, and self-regulation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

流固耦合作用下注水井井壁稳定性研究

注水开发油田在生产过程中，渗流场会对油藏地应力场产生影响，在井壁附近产生应力集中。研究了注水过程中流固耦合作用下套管损坏的力学机理，在传统的Biot 方程的基础上，考虑介质渗透性能随应力的变化，建立了注采过程中流体渗流与固体弹塑性变形的非线性耦合数学模型，采用全耦合的有限元法对所建立的模型进行求解。通过对大庆油田南二区某注水井注水开发过程的数值模拟，分析了注水对储层孔隙压力、井壁围岩应力场和变形场的影响，并对比了不同注采情况下储层孔隙压力和井壁应力随时间的变化关系。研究表明，油藏注水开采过程中，油藏流固耦合作用对地层特别是井壁附近围岩的应力和变形影响很大。研究结果为合理建立油藏注水开发的流固耦合计算模型，合理控制注采压差，预防和减少该地区地层变形、套管损坏等提供了依据。     

江苏省沿江八市住宅需求差异分析

简述了江苏省沿江八市的概况,运用聚类分析方法对八个城市进行分类,收集八市的相关面板数据,构造住宅需求函数,对各类城市的住宅需求进行分析,并比较得出各类城市住宅需求的差异。     

Solution Algorithm to a Class of Monetary Rational Equilibrium Macromodels with Optimal Monetary Policy Design

In this paper an extended algorithm using well-known solution methods for monetary models characterized by rational expectations and optimal monetary policy design is given. The extension enables first the use of broad dynamic interdependencies within the structural model of the economy, second stochastic shocks on all endogenous variables and third commitment to a policy displaying no time inconsistency problem. All these points are not entirely new, but are seldom included into an operational solution algorithm. Furthermore a computational improvement concerning the splitting process for the stable and unstable part of the solution is proposed.      

高寒地区气温年变化所致胸墙裂缝的分析及处理

某高寒地区水闸，气温年变化较大，温度下降对，胸墙受闸墩强约束，在各种荷载作用下，产生了纵横裂缝；裂缝影响结构及材料的耐久性；制定了针对高寒及炎热交替条件下混凝土裂缝的处理方案。