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   693篇
  免费   11篇
财政金融   142篇
工业经济   59篇
计划管理   99篇
经济学   125篇
综合类   6篇
运输经济   9篇
旅游经济   13篇
贸易经济   204篇
农业经济   23篇
经济概况   23篇
邮电经济   1篇
  2024年   2篇
  2023年   6篇
  2022年   3篇
  2021年   7篇
  2020年   11篇
  2019年   12篇
  2018年   15篇
  2017年   17篇
  2016年   19篇
  2015年   11篇
  2014年   17篇
  2013年   86篇
  2012年   19篇
  2011年   23篇
  2010年   29篇
  2009年   30篇
  2008年   29篇
  2007年   21篇
  2006年   27篇
  2005年   24篇
  2004年   33篇
  2003年   28篇
  2002年   19篇
  2001年   27篇
  2000年   12篇
  1999年   15篇
  1998年   22篇
  1997年   11篇
  1996年   10篇
  1995年   8篇
  1994年   8篇
  1993年   7篇
  1992年   2篇
  1991年   13篇
  1990年   7篇
  1989年   10篇
  1988年   6篇
  1987年   3篇
  1986年   10篇
  1985年   6篇
  1984年   8篇
  1982年   7篇
  1981年   9篇
  1980年   2篇
  1979年   1篇
  1978年   3篇
  1977年   3篇
  1976年   3篇
  1975年   1篇
  1974年   1篇
排序方式: 共有704条查询结果,搜索用时 15 毫秒
41.
42.
43.
This paper follows up our theoretical discussion of the potential for collaborative problem solving in Design and Technology (Hennessy and Murphy, 1999). In this paper we report our empirical investigation of peer collaboration in a setting where we identified the presence of significant pre-conditions for productive collaboration. The study investigated the participation of two boys aged 13 who worked together with their teacher over 8 weeks in designing and making an aid for a child with a disability. We analysed their participation using a framework of key features derived from the research literature. Our analyses yielded evidence of effective collaboration in the early design stage, but the students' collaboration and their progress were subsequently undermined. The reasons related to the students' ability to collaborate and the tension for the teacher between students' learning needs and client needs within an authentic activity. The outcome was a successful product but a wealth of lost opportunities – and lack of support – for the students' collaborative problem solving and Design and Technology (D&T) learning. Our observations confirm that despite little evidence of collaboration in D&T, this setting offers extensive resources for supporting collaboration in joint design, planning and problem-solving activities. We also identify impediments to collaboration as a learning mechanism. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
44.
The quartile points and interquartile range of the maximum entropy (ME) distribution and sample distribution are compared, using expected values for sampling from a standard normal population. For sample sizes n?20 such that the sample quartile points are uniquely defined, the ME quartile points and interquartile range are found to have lower mean-squared error (MSE).  相似文献   
45.
46.
47.
Financial performance measures are essential to improve the fiscal management of academic nurse-managed centers (ANMCs). Measures are compared among six ANMCs in a consortium and against an external, self-sustainable, profitable ANMC and national data for family practice physicians. Performance measures help identify a center's strengths and weaknesses facilitating the development of strategies aimed at a variety of targets (business practices related to revenue and costs) to improve financial viability. Using a variety of financial performance measures to inform decision making will aid ANMCs in keeping their doors open for business.  相似文献   
48.
Teaching should be part of every patient's health care. Even though this study did not show that teaching improves patient satisfaction with the clinic visit, it did indicate that subjects who were taught by the nurse were more satisfied with the education received during that visit.$  相似文献   
49.
50.
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