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51.
段重庆 《四川职业技术学院学报》2012,22(1):21-24
唐代西南地区农业发展迅速,水利工程建设取得重大成就,不但对前人水利设施进行制度化维护,而且结合本地特点修建新的水利工程,使得水利工程形成以都江堰工程为核心的灌溉体系和由政府主导社会参与的建设格局的特点。这些水利工程承担了灌溉和航运的任务,获得了巨大的经济效益,原因:一是完善的水利管理制度;二是政府重视农业。对我们当前农田水利建设有重要启示,第一,注重资源税,调控用水,发展农业;第二,重视水利工程的修建;第三,鼓励民众参与水利建设;第四,健全水利管理机构,构建覆盖水利建设体系的法律法规,着重落实责任,重在执行;最后,水利工程建设要综合考虑当地的生态经济环境承载能力。 相似文献
52.
A model of dynamic programming for repairing strategies of concrete structures during a projected service period is proposed,which takes into account the degradation in strength of components and the probability of accidental load.This model takes the safety grade of a structural system as the state variable of repairing strategies,and incorporates economic factors including expected repair cost,property loss due to structure failure,goods and material loss due to structure failure,loss of production interrupt due to structure failure,and inspection cost in decision making.It is found that the optimal repairing strategies are sensitive to the probability of accidental loads as well as the failure costs.The practicality of the model is demonstrated by an example. 相似文献
53.
张华 《体育科技文献通报》2011,19(12):118-119
本文运用哲学、生理学、心理学等学科为指导,对家庭环境培养少儿体育意识的重要性进行了研究。阐述了少儿时期是体育意识形成的最佳时期,是体育意识形成的＂敏感期＂,是强身健体,开发少儿智力的有效途径,以及家庭环境在少儿成长的过程中所起的重要作用。 相似文献
54.
张永兴 《重庆大学学报(英文版)》2003,2(2)
1. Introduction In October 2000, the Chongqing government received an exciting message. The Planning Committee of China approved the feasibility reports on Changshengqiao sanitary landfill projects supported by a loan from World Bank. This indicates that the Chinese government and local governments of different ranks have come to realize the importance of city environment and sanitation, and it also stands for the termination of simple and easy landfills. Before 2015, two modern sanitary l… 相似文献
55.
ZHANG Hong-jing LONG Teng-rui CAO Yan-xiao 《重庆大学学报(英文版)》2006,5(3):152-156
1 Introduction ? The biological aerated filter technique has developed rapidly since 1980s, and is widely used in municipal sewage treatment. It has been used in the primary and secondary treatment processes due to its desirable economical efficiency and … 相似文献
56.
部队院校学员心理健康教育是我军健康教育的一个重要内容，也是我军军事体育教育的重要内容之一。为适应未来高技术条件下局部战争需求，培养军校新擘员健康的心理具有重要的战略意义，本文从军体教育的角度，阐述军体教育在新学员心理健康教育中的作用和方法。 相似文献
57.
国企民营化改制要顺利进行，必须摆脱一系列的理论和实践束缚，方能成功；同时，也必须充分认识到，民营化并不是解决国有企业问题的唯一途径。分析国企民营化改制可行性的目的在于籍此找出国有企业问题的症结．探索后续改革的合理预期。 相似文献
58.
解决我国劳动就业问题的出路与对策 总被引：1，自引：0，他引：1
我国劳动力资源极为丰富且增长较快，劳动力市场供需矛盾十分尖锐，社会就业形势不容乐观，为保障国民经济顺利发展和社会稳定大局，迫切需要积极研究和实施治理当前失业问题和解决未来就业问题的政策措施。本文从我国劳动就业的现状、存在的问题出发讨论，提出缓解中国就业压力问题的8点对策。 相似文献
59.
Middle matching mining algorithm 总被引：1，自引：0，他引：1
郭平 《重庆大学学报(英文版)》2003,2(2)
1. Introduction With the increase in the amount of information, we feel the pressure from 搕he exploring information? and find that we are in a dilemma of having huge data but with little knowledge [1]. Data mining is an effective method to help us to get rid of the morass, and is a process of inferring knowledge from such huge data. A sequence is an ordered list of transactions (or itemsets), in which each transaction is a set of items. Typically there is a transaction-time associated with ea… 相似文献
60.
汪凌云 《重庆大学学报(英文版)》2002,(2)
Magnesium and magnesium alloys, which have a density of 1.74 g cm-3, are the lightest structural metal. In addition to being extremely light, magnesium alloys have many advantages such as high specific strength and high specific rigidity [1-3]. Magnesium alloys have been paid more and more attention in recent years. A few die castings of magnesium alloys have been applied to automobile industry. Magnesium alloys have huge potentiality of application to automobile, motorcycle, aviation, spacefl… 相似文献