WDM网状网在鲁棒资源配置下的抗毁设计

针对WDM网状网中业务量矩阵不确知情况下(hose业务模型)的鲁棒资源配置问题,进行了抗毁设计,采用专用通道保护策略,网络设计的优化目标为全网代价最小。提出了DPP-MRU和DPP-MST两种启发式算法,并通过计算机仿真分析,从两种算法在USANET-hose和ITANET-hose模型下的全网代价比较,证实了最大资源利用率算法具有较小的全网代价。     

Communicating Asset Risk: How Name Recognition and the Format of Historic Volatility Information Affect Risk Perception and Investment Decisions

An experiment examined how the type and presentation format of information about investment options affected investors' expectations about asset risk, returns, and volatility and how these expectations related to asset choice. Respondents were provided with the names of 16 domestic and foreign investment options, with 10-year historical return information for these options, or with both. Historical returns were presented either as a bar graph of returns per year or as a continuous density distribution. Provision of asset names allowed for the investigation of the mechanisms underlying the home bias in investment choice and other asset familiarity effects. Respondents provided their expectations of future returns, volatility, and expected risk, and indicated the options they would choose to invest in. Expected returns closely resembled historical expected values. Risk and volatility perceptions both varied significantly as a function of the type and format of information, but in different ways. Expected returns and perceived risk, not predicted volatility, predicted portfolio decisions.     

Slope modified confidence bands for a simple linear regression model

Considerable attention has been directed in the statistical literature towards the construction of confidence bands for a simple linear regression model. These confidence bands allow the experimenter to make inferences about the model over a particular region of interest. However, in practice an experimenter will usually first check the significance of the regression line before proceeding with any further inferences such as those provided by the confidence bands. From a theoretical point of view, this raises the question of what the conditional confidence level of the confidence bands might be, and from a practical point of view it is unsatisfactory if the confidence bands contain lines that are inconsistent with the directional decision on the slope. In this paper it is shown how confidence bands can be modified to alleviate these two problems.     

加工车间进度计划的实用动态模拟研究

从实用的角度出发，对较大规模的加工车间问题采用了动态模拟的方法，在非延迟计划（ＮｏｎｄｅｌａｙＳｃｈｅｄｕｌｅｓ）的基础上，根据各种不同的启发式优先规则，迅速生成几类包含或接近最优解集并相应满足不同目标函数的进度计划．采用某机械加工厂大件车间的实际数据进行了进度计划的编制，取得了比较满意的结果．     

评测Web使用分析中会话识别的准确度

目前用于用户会话识别的方法主要有两类:基于时限的会话识别和与拓扑结构(超链接)结合的会话识别,这两类方法都是在用户识别的基础上对用户活动作出猜测而得到的。该文提出了一套用于对这些启发式方法所获得的数据的准确程度进行量化的评测系统,不同的估测方法反映不同的数据挖掘应用的需要。最后通过一个实际站点的数据说明了评测系统的识别结果是准确的。     

Taking stock: parents' reasons for and against having a third child

In developed countries with below-replacement fertility, the proportion of people who have at least three children make a substantial difference to the aggregate level of fertility. This study, based on 40 in-depth interviews with Australian parents of two children, analyses what factors influence the decision to have a third child. Using a grounded theory method of qualitative analysis, the study finds that parents who have decided to stop at two children are more able to articulate their reasons than are parents who are considering having a third child. The reasons for stopping include age and health; work and finances; and the capacity to parent another child. The weighing up of multiple factors is evidence of parents taking stock of personal and financial resources when making complex family formation decisions. The reasons for having a third child are expressed with far less elaboration and are more guarded and personal. We conclude that there is less shared or familiar language for articulating the value of family relationships. The contemporary context is one in which parents are attempting to manage risks related to having children, including the personal and financial implications of time out of the workforce. This study finds a persistent story of limited resources among parents of two children. Policies aimed at increasing fertility need to address this perception of limited resources through direct measures like affordable childcare and more generally through greater government and community support for families.     

对威廉姆森启发式模型的修正

威廉姆森启发式模型可以给出交易在不同治理结构中分配的一般原则.由于网络型产业的经济特性,威廉姆森启发式模型不能直接应用于分析网络型基础产业,因此,本文提出修正的威廉姆森启发式模型,这是对通用经济理论的重要补充.     

21世纪推进中俄经贸合作的重要性与政策选择

近年来 ,中俄两国经贸关系明显落后于政治关系 ,长期发展下去有可能影响和削弱中俄政治关系的发展。进入2 1世纪之际 ,中俄加强经贸合作 ,不仅有利于中国经济实现可持续增长和俄经济的复苏 ,而且还可以进一步巩固和发展两国的政治关系。当前 ,为把中俄经贸合作推上一个新的高度 ,应采取一些新的思路和对策。     

求解度约束最小生成树的一种启发式方法

针对网络设计和优化中度约束最小生成树问题,提出了一种基于贪心思想的启发式算法求解度约束最小生成树.在最小生成树的基础上,将超过度约束的顶点降低度数使之满足度约束条件.经大量数据测试并与其他算法进行比较,表明了该算法的有效性和通用性.     

顿悟研究述评及其展望

顿悟是创造性思维的主要形式之一,它一直以来都是心理学研究中的重要课题。文章通过回顾顿悟与顿悟问题、顿悟问题解决、顿悟的理论、顿悟的应用等方面的相关研究,分析了以往研究中存在的问题与不足,并在此基础上对顿悟问题研究的新趋势进行了展望,提出了顿悟问题解决中关键启发信息激活的理论观点,以及“多个源问题(不同型的) 一个靶问题”的新的实验范型。