期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
场地狭小的施工现场平面布置与优化 被引量:14
1
作者 周友海 甘杰龙 《中国商界》 2010年第3期375-376,389,共3页
为在施工场地受限的情况下充分利用场地做好施工的各项工作,施工平面布置与优化问题就显出了极大的重要性。本文在分析了施工场地平面布置与优化的现状和重要性等内容之后,以现实中的某一小型项目为原型建立了简化模型,提出了该类项目... 为在施工场地受限的情况下充分利用场地做好施工的各项工作,施工平面布置与优化问题就显出了极大的重要性。本文在分析了施工场地平面布置与优化的现状和重要性等内容之后,以现实中的某一小型项目为原型建立了简化模型,提出了该类项目可采用目标规划作为优化施工现场平面布置的一种方法,为该类项目提供了一种实用的场地平面布置与优化的思考方式。 展开更多
关键词 场地狭小 施工现场平面布置 优化问题 施工场地 小型项目 施工平面布置 思考方式 目标规划 简化模型 原型 内容 分析 方法
下载PDF
中国能源价格变动与居民消费水平的动态效应——基于VAR模型和SVAR模型的检验 被引量:35
2
作者 张欢 成金华 《资源科学》 CSSCI CSCD 北大核心 2011年第5期806-813,共8页
能源价格的变动对居民消费水平的变化有重要影响。本文综合运用VAR模型和SVAR模型,通过对1989年-2009年我国能源价格变动与居民消费水平的动态波动效应的实证检验表明:①居民消费水平在短期对能源价格水平有正向冲击作用,在长期有负向... 能源价格的变动对居民消费水平的变化有重要影响。本文综合运用VAR模型和SVAR模型,通过对1989年-2009年我国能源价格变动与居民消费水平的动态波动效应的实证检验表明:①居民消费水平在短期对能源价格水平有正向冲击作用,在长期有负向冲击作用,居民消费水平的提高短期内对能源价格水平的上涨有推动作用;能源价格水平在短期和长期对居民消费水平有明显的正向冲击作用,能源价格水平的上涨导致居民消费水平的上涨;②能源价格水平在短期主要受前期自身水平的影响,居民消费水平在中长期对能源价格水平也有较强贡献;居民消费水平短期内主要受前期居民消费水平的影响,长期受居民消费水平和能源价格水平的共同影响。基于以上结论,国家在调控能源价格时需要考虑到能源价格对居民消费水平的影响,避免由于能源价格过快上涨导致居民消费水平的剧烈波动;此外,在能源价格长期上涨预期背景下,我国政府应逐步提高居民工资收入占GDP比重,通过收入分配改革提高居民收入水平,为维持高能源价格背景下居民消费水平的健康发展提供支持。 展开更多
关键词 居民消费水平 能源价格 VAR模型:SVAR模型 脉冲响应函数 中国
原文传递
Overview on China's Rare Earth Industry Restructuring and Regulation Reforms 被引量:10
3
作者 SHEN Lei WU Na +1 位作者 ZHONG Shuai GAO Li 《Journal of Resources and Ecology》 CSCD 2017年第3期213-222,共10页
Rare earth elements (REEs) that are key to new technologies and green innovations are critical to life in modern societies. China continues to dominate the global REEs market despite several international trade disp... Rare earth elements (REEs) that are key to new technologies and green innovations are critical to life in modern societies. China continues to dominate the global REEs market despite several international trade disputes and market fluctuations. Pressured by an increasingly difficult situation, the Chinese government has been carrying out industry restructuring and has introduced regulatory reforms in recent years to promote the healthy develop- ment of the rare earth industry. This paper reviews the literature on the development of the rare earth industry and analyzes the reform policies, combining this with an analysis of relevant macroeconomic data. It discusses the current status of China's rare earth industry, the progress of industrial restructuring and the main problems the rare earth industry faces. The paper discusses the evolution of rare earth policies from that of "open production and open supply" to that of "limiting low quality development but encouraging export of high quality rare earths" and then to "integrating rare earth resources trade". Six key policies, including those for export quotas, export duties, environmental laws, resource utilization technology, industry consolidation and stockpiling, are discussed in detail. Policy suggestions based on this discussion are put forward concerning the treatment of small rare earth mines in China: firstly, robust efforts to prevent illegal mining must always be maintained; secondly, it is certain that the formation of large-scale conglomerates should be accelerated in the near future; thirdly, the management of key sections should be reinforced; fourthly, support for technological innovation and the development of the applications industry should continue; fifthly, specific rare earths laws and regulations should be greatly improved. The paper also puts forward some suggestions on revisions to improve mineral resources law: firstly, China must increase the market access threshold and suppress low-end excess production capacity; secondly, the new environmental protection verification must be developed for all rare earth enterprises; thirdly, minimum required indicators for the development and utilization of rare earths resources must be implemented in China. These recommendations can serve as a reference for efforts to promote the sustainable development of China's rare earth industry. 展开更多
关键词 rare earth policy industry restructuring small-scale mining regulation China
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部