多项举措共同推进建筑节能步伐

中国的建筑节能工作进展缓慢,建筑节能市场尚未完善,亟待政府以政策指导和宏观调控的方式协助其步入正轨。结合当前我国建筑节能中存在的种种问题,深入探析问题原因之所在,并提出推进我国建筑节能战略实施的措施建议。     

新农村规划建设中"权威主义"与"公众参与"的思辨:以北京怀柔官地村旧村改造为例

新农村建设是我国新时期建设的一项大事,同时也是一道难题.“自上而下“和“自下而上“两种思路处于不断交锋中.本文以北京怀柔区官地村旧村改造规划实践为基础,参考社会学研究的方法,进行比较,分析和深入思考,希望能探索农村建设中“权威主义“与“公众参与“的相互关系及其对规划建设的深刻影响,揭示“公众参与“在新农村建设中的社会学意义.     

Exif数据格式浅析及其读取应用

照片中镶嵌着丰富的Exif信息,从中可提取出拍摄位置与时间等实用数据服务于我们的工作与生活。本文分析了Exif数据格式,介绍了其读取方法,总结了Exif信息提取算法。结合具体实例,进行测试验证,对日常手机定位精度情况进行了评估。最后,通过生产实践,验证Exif信息对于提高测绘与地理信息单位的作业效率与质量控制的促进作用,同时对应用前景进行了展望。     

如何做好混凝土原材料的质量控制

原材料质量的好坏是影响混凝土质量的关键因素。本文从水泥、掺合料、细骨料、粗骨料、外加剂等方面浅谈了如何做好混凝土原材料质量的控制问题。     

Effects of Air Inlet Configuration on Forced-Ventilation Enclosure Fires on a Naval Ship

The effects of air inlet configuration on pool fire behavior in a mechanically ventilated cabin were investigated. The closed cabin used was a model of a certain machinery cabin on a naval ship. Two air inlet configurations of one vent and two vents were taken into account together with five different elevations of air inlet. In one-vent cases, mass loss rate and gas temperature were lower and oxygen concentrations were higher than those of two-vent cases. With the increase of air inlet elevation, a sudden drop in average mass loss rate and peak temperature were found in the two-vent cases at the air inlet elevation of 1.56 m. In one-vent cases, a similar drop in average mass loss rate was found at the air inlet elevation of 0.88 m, while the peak temperature was almost unaffected by inlet elevation. According to temperature profiles and the characteristic parameter of the smoke layer stability, the formation of the smoke layer was destroyed by increasing the air inlet elevation or reducing the air inlets, and furthermore a more uniform distribution could be found. For the current cabin, the one-vent case with a lower air inlet elevation was recommended for smoke control, and the inlet should be set away from the essential equipment and the entrances of the cabin.     

经济法责任探析

经济法责任是经济法基本理论的重要问题之一,目前少有深入研究和探讨。本文从对经济法责任研究的重要理论和实践意义入手,对经济法责任的理论体系进行了基本的构筑,并尝试性地分析和探讨了该问题研究的重点和难点。     

钠离子电池用电解质钠盐的研究进展

综述近年来含氰基类钠盐、酰胺类钠盐和氟类咪唑衍生物钠盐等电解质钠盐在钠离子电池中的研究应用。分析这些电解质钠盐的结构特征,阐述钠盐因独特结构优势提升电池性能的机理,展望钠离子电池电解质中钠盐的发展趋势。