首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   16篇
  免费   0篇
系统科学   1篇
综合类   15篇
  2011年   2篇
  2008年   1篇
  2005年   4篇
  2004年   1篇
  2002年   1篇
  1973年   1篇
  1972年   2篇
  1971年   3篇
  1967年   1篇
排序方式: 共有16条查询结果,搜索用时 0 毫秒
11.
12.
13.
This article addresses the distinct ethical challenges of action research in inter-organisational projects. Traditionally, the literature on action research has distinguished between two researcher roles: The problem-solver and the observer. Based on an action research project in a Danish inter-organisational network, a third role as legitimiser is identified as an ethical challenge. Potentially, the legitimacy that the researchers carry as academic knowledge-generating actors may be used by a particular company to involve other companies in the network. Thus, the researchers may be perceived as bringing into the other organisations a Trojan Horse containing the interests of this particular company. Lack of clarity in defining the role of the action researcher may thus jeopardise the trustworthiness of the researchers and the action research project. On the basis of the case study analysis, the article develops a number of preliminary points of ethical consideration for future research analysis.  相似文献   
14.
Spontaneous mutants of yeast deficient in glycogen   总被引:5,自引:0,他引:5  
V E Chester 《Nature》1967,214(5094):1237-1238
  相似文献   
15.
Fracture surface energy of the Punchbowl fault, San Andreas system   总被引:3,自引:0,他引:3  
Chester JS  Chester FM  Kronenberg AK 《Nature》2005,437(7055):133-136
Fracture energy is a form of latent heat required to create an earthquake rupture surface and is related to parameters governing rupture propagation and processes of slip weakening. Fracture energy has been estimated from seismological and experimental rock deformation data, yet its magnitude, mechanisms of rupture surface formation and processes leading to slip weakening are not well defined. Here we quantify structural observations of the Punchbowl fault, a large-displacement exhumed fault in the San Andreas fault system, and show that the energy required to create the fracture surface area in the fault is about 300 times greater than seismological estimates would predict for a single large earthquake. If fracture energy is attributed entirely to the production of fracture surfaces, then all of the fracture surface area in the Punchbowl fault could have been produced by earthquake displacements totalling <1 km. But this would only account for a small fraction of the total energy budget, and therefore additional processes probably contributed to slip weakening during earthquake rupture.  相似文献   
16.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号