自然循环热水锅炉水循环故障安全技术改造

对自然循环热水锅炉结垢、变形、爆管等故障进行了分析，提供了4种常见典型炉型的水循环改造技术。     

关于循环经济理论与政策的几点思考

作者结合学习贯彻十六大精神，详细论述了发展循环经济的重大意义、模式和前景，提出了我国发展循环经济的理论和政策建议。     

A Review of Range Production and Management Extension Activities in Kenya

The paper presents an overview of the development of range management extension activities in Kenya. The status quo of range management activities is discussed with particular reference to extension infrastructure, scope of extension interventions and mechanisms of dissemination of these innovations. On the basis of the nature of available innovations and efficiency of dissemination mechanisms, the paper emphasizes the need for future institutional reforms to facilitate successful application of technological interventions, validation of the Kenyan innovation Diffusion Model and enhancement of the social acceptability of technological interventions. This revised version was published online in August 2006 with corrections to the Cover Date.     

A Comparison of Urban-Proximate and Urban-Distant Wilderness Users on Selected Variables

/ The underlying premise of this study is that wilderness areas attract visitors desiring or expecting different wilderness experiences. In this study, wilderness areas were dichotomized according to distance from a large urban center (urban-proximate vs urban-distant). Four wilderness areas in southern California were used as the study sites. Comparisons were made on selected attributes commonly associated with the wilderness experience. Differences were observed on a number of variables such as acceptable number and type of encounters with other visitors, management preferences, and preferred group sizes. The findings of this study are congruent with those from previous studies and suggest that distance to large urban centers may be a functional variable in explaining differences among selected wilderness attributes.KEY WORDS: Expectancy theory; Normative standards; Wilderness; Wilderness experience; Urbanization     

20t/h煤粉炉除尘系统改造

对大同矿务局中央机厂２０ｔ／ｈ煤粉炉原有除尘系统所存在的问题进行了全面分析，在此基础上，确定了改造方案，进行了改造设计。改造后实际运行情况表明，２０ｔ／ｈ煤粉炉的烟气黑度及烟尘浓度均达到了国家二级标准。     

一个县级防震减灾机构管理的改革与创新

笔者从澜沧县地震局管理工作实际出发,阐述了通过改革创新,强化科学管理,在较短时间内改变了防震减灾工作长期落后的局面.揭示了"管理出效益"的基本事实.     

滏阳河流域的水资源问题

根据对华北地区水资源短缺最严重的滏阳河流域的实证研究表明,随着部门和上下游用水者之间用水竞争程度的加剧,流域从开放向闭合的转变,地下水位的逐年下降及引致的环境问题,节水的空间也变得十分有限。解决未来水资源短缺的问题很大程度上将依赖于如何运用政策、制度和经济措施实现水资源的优化配置和综合管理,提高灌区的运行绩效和实现有效的产权制度创新。     

德国的可再生能源法及其借鉴意义

2005年2月28日,《可再生能源法》在十届全国人大常委会第十四次会议上获表决通过,为中国可再生能源快速发展提供了良好的契机.但是,要使本法发挥有效作用,需要制定出明确可行的实施细则.为此,有必要研究学习国际先进经验.德国可再生能源法是世界上最先进的关于清洁能源的立法之一,它的很多原则和具体条款都具有相当的创新性,在实践中充分发挥了效力,极大地促进了德国可再生能源的发展.本文介绍分析了德国可再生能源法的重要条款并对比了我国的可再生能源法,指出了它的借鉴意义.     

A Dynamic Crediting Regime for Joint Implementation to Foster Innovation in the Long Term

Joint Implementation is a theoretically efficient instrument of climate policy at least in the short run. This need not apply for the long run. Joint Implementation can reduce innovation in the industrialized countries because of reduced incentives for emission reduction. To realize short run efficiency gains and to avoid long run efficiency losses, we need a ‘strategic’ climate policy. This policy should start with full crediting of Joint Implementation allowing short-run efficiency gains which can foster technology transfer and thus lead to ‘leapfrogging’ by developing countries. Over time, the crediting ratio should be gradually reduced while domestic carbon taxes are raised. Experiences from the second oil shock have shown that energy-saving innovation is positively correlated to energy prices. Both, the reduced crediting and the raising domestic carbon tax, will therefore lead to long-run innovation.     

Site selection for a data centre – a multi-criteria decision-making model

IT data centres (DCs) are a huge investment and most mid-size companies need to set up their own DCs to run their business operations. Building new DCs is a time-consuming effort needing millions of dollars and months of planning. Companies cannot afford to make a wrong decision when designing and setting up a new DC as these need to build for a life of around 20 years. In this paper, we studied the challenges and issues faced by enterprise DCs and explored various criteria which can be used for selecting a site for a new DC. We use a hierarchical model to look into various financial, environmental, social, political and geographical factors which an organisation need to look into when choosing a city for their DC. The model discussed in the paper provides a general framework and can be adopted by a company operating in any industry and any country.