New issues in long-term care

Employer sponsorship of long-term care programs is a growing trend, one that is likely to continue, no matter what direction national health care reform takes.     

Disequilibrium,power and economic systems

Summary This is a review article of D.B.J. Schouten's new book Macht en wanorde, Een vergelijking van economische stelsels (Power and Disorder, A Comparison of Economic Systems). After having summarised the book's contents, three points are discussed: (a) does the book offer a comparison of economic systems as its subtitle suggests; (b) how does Schouten's theory relate to disequilibrium analysis and does it give a better understanding of disequilibria than disequilibrium analysis; (c) is Schouten's proposal of a centrally-guided rate of return policy indeed to be preferred above a centrally-guided wage policy in order to overcome the basic problem in capitalist market economies of slow and sometimes perverse adjustments?D.B.J. Schouten,Macht en wanorde, Een vergelijking van economische stelsels, (Power and Disorder, A Comparison of Economic Systems), H.E. Stenfert Kroese b.v., Leiden/Antwerpen, 1980: Pp. 270. Dfl. 47,50.I am indebted to Professor Th. van de Klundert for useful comments.     

Financial Market Design and the Equity Premium: Electronic versus Floor Trading

We assemble the announcement and actual introduction dates of electronic trading by the leading exchanges of 120 countries to examine the impact of automation, controlling for risk factors and economic conditions. Dividend growth models and international CAPM suggest a significant decline in the equity premium, especially in emerging markets. Consistent with this reduction in the equity premium in the long run, there is a positive short‐term price reaction to the switch. Further analysis of trading turnover supports the notion that electronic trading enhances the liquidity and informativeness of stock markets, leading to a reduction in the cost of capital.     

保定市主要作物需水量和缺水量特征分析

[目的]对作物需水量及缺水量的研究是了解和合理配置农业灌溉用水的基础,对提高农业用水效率有重大意义。[方法]选取河北省保定市为研究区域,利用Penman-Monteith公式和分段单值平均作物系数法对冬小麦、夏玉米和棉花的作物需水量和缺水量等指标进行计算,通过Mann-Kendall检验法对保定市近60年来的作物需水量和缺水量等的变化趋势进行分析。[结果]3种主要作物的需水量、有效降雨量和缺水量的最大值均出现在作物发育中期;其中除冬小麦的有效降雨量以0.208mm/10年的速率呈不显著性增长趋势外,其他作物的各指标变化则均呈减少趋势;从突变现象来看,夏玉米和棉花的各指标发生明显变化的时期相近,需水量出现明显拐点的时刻在2008年以后,有效降水量在1968年以前和2014年两个时期,缺水量分别在2011年和2012年。[结论]该研究结果为保定市乃至河北省的农作物灌溉效率的提高及水资源规划与管理的完善提供了理论依据,具有一定的现实意义。     

从AutoCAD数据库生成数控加工指令的方法

AutoCAD是一个完整的交互式设计软件包,它具有很强的绘图和图形编辑功能,因而在我国机械制造业中运用十分广泛.本文介绍利用AutoCAD的数据交换文件DXF,直接从几何信息中提取加工信息的方法.