明清时期十堰地区矿冶业综述     

徐永安 《郧阳师范高等专科学校学报》2004,24(4):15-19

明清时期十堰地区的矿冶业 ,此前已有学者不同程度论及到。本文在研究了大量直接和间接资料的基础上 ,梳理出了明清两朝十堰地区 (包括郧阳府六县和时属襄阳府的均州 )矿冶业的基本线索、概况和特点 ,分析了其兴废的原因。也从经济的角度反映了该地区这一段历史的特殊性。  相似文献   

预测摄动平面非Hamilton系统混沌的解析方法     

陈立群 《上海大学学报(英文版)》2002,6(2):111-114

An analytical method for predicting chaos in perturbed planar non-Hamiltonian integrable systems with slowly varying parameters was developed.Based on the analysis of the geometric structure of unperturbed systems.the condition of transversely homoclinic intersection was given.The generalized Melnikov function of the perturbed system was fund by applying the theorem on the differentiability of ordinary differential equation solutions with respect to parameters.  相似文献   

Choquet积分定义的单调集函数的几个遗传性质     

欧阳耀  李军 《东南大学学报》2003,19(4):423-426

讨论了Choquet积分定义的单调集函数的几个遗传性质．证明了Choquet积分定义的新的单调集函数遗传了原来集函数的几个重要的结构特性，如弱零可加性、强序连续性、性质(S)和伪距离生成性质等．最后通过2个例子说明了当被积函数不是C可积时，强序连续性和伪距离生成性质将不再被保留．  相似文献   

语法知识在语言问题思辨中的应用   总被引：4，自引：0，他引：4  

邢福义 《华中师范大学学报(人文社会科学版)》2003,42(5):72-76

本文讨论汉语语法知识的实际应用问题。全文包括五个部分：1)统数和序数；2)定数和约数；3)量词和非量词；4)限选和非限选；5)问题小议。  相似文献   

亚洲区域合作中的非制度性因素——一种分析的视角     

雷勇 《安顺学院学报》2004,(3)

区域合作是20世纪的新事物。它是在区域主义的兴起的大背景下出现的多边合作形式之一。亚洲区域合作经历了30多年的发展,至今已形成了由东盟和亚太经合组织两大区域合作组织并取得了显著的成就。但是,由于存在制度上的缺失和错位,所以亚洲的合作水平和深度还停留在较低的层次上。文章运用制度经济学的理论来分析亚洲区域合作过程中的非制度因素,通过对东盟和亚太经合组织的历史与现状的考察,得出这样的结论:亚洲经济一体化和政治统一化将是一个长期、艰难和渐进的过程。  相似文献   

Evaluation of the non‐formal forest education sector in the state of North Rhine‐Westphalia,Germany: organisations,programmes and framework conditions     

Anne Grimm  Thorsten Mrosek  Anna Martinsohn  Andreas Schulte 《Environmental Education Research》2011,17(1):19-33

Although a large number of different organisations offer various forest education programmes within Germany, specific information (i.e., sectoral and programme content and provision at a state level) is lacking. This study used a survey of all 61 forest education organisations (43 respondents) in the state of North Rhine‐Westphalia, Germany, to evaluate its forest education sector, with a specific focus on the organisations, demand for its services, forest educational programmes and framework conditions. Input from expert interviews was also used to develop recommendations. The study indicates that, especially with children as the main target group, many non‐formal programmes are offered to support the formal environmental education sector and to promote leisure activities in the forest. Yet, despite a high demand for forest education, low personnel resources restrict the number of visits and activities, principally owing to limited financial resource. We also discuss the provision of innovative new educational programmes and supplementary services, combined with increased quality management, that could be beneficial to the future development of the sector in NRW.  相似文献   

To be or not to be ‘a disabled student’ in higher education: the case of a postgraduate ‘non‐declaring’ (disabled) student     

Angela Jacklin 《Journal of Research in Special Educational Needs》2011,11(2):99-106

This paper draws on data from a research project that was funded by the UK's Higher Education Academy. The project focused on the experiences of disabled students in one English higher education institution, and a key feature of the project was to attempt to access the perspectives of ‘non‐declaring’ disabled students. This paper draws on the experiences of one of the ‘non‐declaring’ respondents, Anna, a postgraduate student. In the UK, some students declare their disabled status on entry to a higher education institution, some do so once at the institution and some never let the institution know of their impairment. It is the perspectives of this latter group that are particularly difficult to access. Anna's experiences as a postgraduate student provide some insight into what may affect decisions about declaration of impairment. Drawing on a social‐relational understanding of disability, factors that influenced her decision not to ‘declare’ and the consequent effect on her experience of higher education are explored.  相似文献   

浅析非政府组织在构建和谐社会中的功效、困境及对策   总被引：6，自引：0，他引：6  

张济琳 《软科学》2006,20(1):93-95

构建和谐社会很重要的一个方面就是通过沟通不同阶层联系,化解社会矛盾,理顺民众情绪,使社会的各种要素和关系处于相互融洽的状态。非政府组织在解决和满足这些社会需求时有不可替代的作用。在中国的现实生活中,非政府组织在构建和谐社会进程中具有很大的发展和操作空间,同时也面临诸多问题。对非政府组织在构建和谐社会中的功效和困境进行初略的剖析,并探求了相应对策。  相似文献   

平衡计分卡:一种革命性的企业经营业绩评价方法   总被引：6，自引：0，他引：6  

张兆国  陈天骥  余伦 《中国软科学》2002,(5):109-111,102

传统的企业业绩评价方法基本上是采用财务指标体系对企业业绩加以评价。平衡计分卡是适应20世纪80年代以后的企业内部条件和外部环境的新变化而诞生的，而通过建立一整套财务与非财务指标体系来对企业业绩和竞争状况加以综合评价。该方法的提出及应用使传统的企业业绩评价方法受到了严峻挑战，被西方财务界誉为企业业绩评价中的一场重大革命。  相似文献   

非稳态蠕变二维裂纹尖端场强近似分析     

王勇  柴国钟 《科技通报》1997,13(6):353-357

从幂律蠕变材料静态裂纹体在时间相关比例加载条件下的应力应变场分析出发，建立了弹性—幂律蠕变材料裂纹体在时间相关比例加载条件下的瞬态Ｊ（ｔ）积分和Ｃ（ｔ）积分的估算公式，并给出了载荷恒定和加载点位移恒定这两种特殊情况下的Ｊ（ｔ）积分和Ｃ（ｔ）积分的解析表达式．作为实例，计算分析了紧凑拉伸试样等几种典型裂纹构形在加载点位移恒定情况下的Ｊ（ｔ）积分和Ｃ（ｔ）积分，并与有限元解进行了比较．  相似文献