The problems of supplying water to third world cities: Bulawayo's water crisis

The current drought in central and southern Africa has focused attention on issues relating to the provision and supply of potable water. In the case of Bulawayo, Zimbabwe's second city, there is the very real prospect that water supplies may be exhausted before the onset of the next rainy season. This paper explores the background to this problem and shows how poor planning, financial constraints, and political intransigence have failed to keep pace with a policy aimed at the provision of water to the inhabitants in this expanding urban environment Alternative sources of supply. in particular a pipeline to the Zambezi River, are also investigated.     

从三因素模型看行为金融学

法玛和法兰奇三因素模型 1953,马科维兹(Markowitz)在一定的经济模型假设下得出了均值一方差的有效市场模型,并初步建立了CAPM的基础;后来,Sharpe(1964年)、Lintner(1965年)和Black(1972年)引入了表征每种证券风险的β值,并提出了著名的CAPM模型.在CAPM模型中,股票的收益率水平用其收益率的期望表示,而其风险则用β值表示.     

Organizational Culture,Leadership Behaviors,and Employee Attitude in Chinese SMEs＂ Empirical Evidence

This study examines the impact of organizational culture on leadership behaviors, as well as the influence of leadership behaviors on employee attitude in Chinese small and medium-sized enterprises （SMEs）. Based on previous researches, this study establishes a conceptual model that indicates the two types of influential relationship. Data are collected from 515 subordinates of 23 SMEs in Chengdu of Sichuan province. By using statistical methods, findings of this study are concluded. Directions for future research are also discussed.     

造林密度确定方法分析

文章阐述了造林密度确定的原则,总结了造林密度在杨树各造林模式中的应用,以期为杨树的集约栽培提供参考.     

基于低碳经济理念的城市规划研究

随着世界工业经济的发展,人口的剧增和生产生活方式的无节制,世界气候面临越来越严重的问题,已经严重危害到人类的生存环境和健康安全.在这种发展背景下,低耗能低碳排放的低碳城市化发展是减碳的关键.本文从发展低碳经济最有效的方式-基本的城市规划基础做起,阐述了几种可行性方法.     

Luft zum Atmen

Mehr Sicherheit im Umgang mit Trachealkanülen - Pflegende, die Patienten mit einer Trachealkanüle betreuen, müssen den Kanülenwechsel sicher beherrschen. Denn bei Komplikationen kann das Warten auf den Arzt katastrophale Folgen haben. Daher muss der Umgang mit den Kanülen zur Routine werden.     

2010年1#加氢裂化装置节能降耗优化措施

通过对1#加氮裂化装置能耗进行分析,找到影响能耗的主要因紊,介绍装置已经采取和将来要采取的优化节能措施.     

由上海周边海盐县五金产品的生产与出口观长江三角经济圈对外贸易

上海周边城市的对外贸易是一个十分值得研究的课题,本文主要从海盐紧固件出口综述、影响海盐五金产业因素分析、提出的改革意见和政策意见三个方面对浙江省海盆县五金产业进行了分析.