浅析410S不锈钢的轧制边裂控制

410S不锈钢是一种铁素体不锈钢,以其成本低、线膨胀系数小、导热系数高等优点,在各种工业领域以及日常生活中获得了大量而广泛的应用.然而,这种不锈钢在热轧制过程中,很容易出现边裂缺陷.本文主要通过讨论对边裂产生的影响因素,以寻求合理的控制方法.     

基于EIQ—ABC分析法的T宠物用品公司仓储管理实证分析

EIQ-ABC分析法是仓储管理中有效的定量分析方法,它充分挖掘订单资料的数据信息,为仓储管理提供可靠的数据支持。在对T宠物用品配送中心的实证研究中,重点应用IQ-ABC分析、IK-ABC分析和IQ-IK交叉分析对订单资料进行多维度分析,并根据分析结果提出了货位规划和货物管理等仓储管理方面的建议。     

The Role of Perceptions in Predicting Donor Value

Explores the role of donor perceptions in predicting the value of a donor, both to the voluntary sector as a whole and to specific organisations. Three classes of perceptual variable are examined; perceptions of the performance of the voluntary sector/specific organisations, perceptions of any exchange benefits that might accrue and in cases where a relationship already exists, perceptions of the quality of service quality provided. Drawing on results of an empirical study of 5000 donors to ten large national charities, the paper concludes that all three classes of perceptual variable have the capacity to influence donor value.     

410S不锈钢高温拉伸形变组织研究

铁素体不锈钢因其良好的性能得到广泛的应用,410S不锈钢就为典型钢的一种。本文通过观察410S不锈钢的热塑性曲线和金相组织,对410S不锈钢热变形行为进行基础性研究,得出以下结论:①变形温度在300～1150℃范围内,随着温度的升高,试样的强度迅速下降;②冷却速度对拉伸组织产生显著影响,冷却速度较快时,马氏体析出量明显减少;③试样金相组织以铁素体为基体,基体上有块状或板条状马氏体分布。随着温度的升高马氏体的的形态由块状向板条状过渡,晶粒也变得越细小。     

Capital flows to emerging market economies: A brave new world?

We examine the determinants of net private capital inflows to emerging market economies (EMEs) since 2002. Our main findings are: First, growth and interest rate differentials between EMEs and advanced economies and global risk appetite are statistically and economically important determinants of net private capital inflows. Second, there have been significant changes in the behavior of net inflows from the period before the recent global financial crisis to the post-crisis period, especially for portfolio inflows, partly explained by the greater sensitivity of such flows to interest rate differentials since the crisis. Third, capital controls introduced in recent years do appear to have discouraged both total and portfolio net inflows. Finally, we find positive effects of unconventional U.S. monetary policy on EME inflows, especially portfolio inflows. Even so, U.S. unconventional policy is one among several important factors influencing flows.     

Selfishness, cooperation, the evolutionary point of view and its implications for economics

The assumed selfishness of market actors could be considered in the context of two perspectives: macroeconomic and microeconomic. The first concerns the market mechanism as the most effective from the social well-being or the wealth of a nation points of view. The latter is based on the premises of the nature of human beings. I have distinguished between two possible ways of understanding selfish forms of behaviour in the market: as rational economic behaviour i.e. the most effective from the gains and losses point of view (i.e. public interests in the works of A. Smith) or as selfish from the psychological point of view (this is mostly presented by J. S. Mill's theory). The first approach seems to be concerned with the creation of the most effective market mechanism from the State's point of view. In the context of historical processes over 400 years, cultural evolution “has been promoting” selfish behaviour; for example, it was widely presented in T. Hobbes' works and then for over 200 years, the theory of A. Smith has been supporting and moulding the institutional context of market and social behaviour. Thus, positive economics describes the market created by the ideas of a neo-classical paradigm, which is based on the normative premises of A. Smith and J. S. Mill. Moreover, the virtual market behaviour described by “effects” (f. e. Veblen's effect) and failures seems to be a manifestation of a discrepancy between market reality and the classical assumptions.The social evolution of human beings has been advantageous to the human species. Moreover, from the social point of view, pro-social behaviour is “natural” as well as desirable and it has been preferred by the cultural evolution. Competitiveness assumes that somebody has to lose, because someone gains. Cooperation looks for gains for all the players. The choice is political, and not imposed by selfishness.     

汽车4S店构建信息流与运营提升

汽车4S店是目前汽车厂商采取的主要营销模式,在经营管理过程中会产生大量的信息,这些信息如果能够被系统地收集、分析、整理和传递,必将对4S店的运营提升有着很大的推进作用。文章从信息流对4S店运营提升的作用出发,归纳目前4S店信息流现状,探讨如何构建完善的信息流体系。     

多层次综合择优决策模型及应用

本文在对“模糊决策”进行深入研究的基础上,给出了多层次综合择优决策数学模型。首先提出了“效果值”的概念,解决了模糊排序中的一个难题,从而使决策结果择优更具科学性与合理性。该模型可广泛应用于社会、经济诸领域.     

概率度量空间中压缩型映象不动点定理的一个推广

本文揭示了《不动点理论及应用》的第九章中节(2)型与第(4)型压缩映象的本质区别;并在此基础上给出了一个定理,它是《不动点定理及应用》中定理9、3、6定理与9、3、10的推广。     

连续时间系统的精确模型匹配控制

本文着重论述了连续时间系统的时域精确模型匹配控制和频域精确模型匹配控制问题。本文介绍的第二类精确模型匹配控制系统的设计方法是复杂控制系统设计的基础(如解耦控制及自适应控制等)。