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   125986篇
  免费   1867篇
  国内免费   238篇
教育   87661篇
科学研究   13507篇
各国文化   1999篇
体育   9881篇
综合类   172篇
文化理论   1099篇
信息传播   13772篇
  2021年   969篇
  2020年   1709篇
  2019年   2642篇
  2018年   3225篇
  2017年   3441篇
  2016年   3482篇
  2015年   2352篇
  2014年   3235篇
  2013年   27491篇
  2012年   2467篇
  2011年   2829篇
  2010年   2389篇
  2009年   2638篇
  2008年   2470篇
  2007年   2189篇
  2006年   2426篇
  2005年   2398篇
  2004年   3097篇
  2003年   2367篇
  2002年   2212篇
  2001年   2137篇
  2000年   1815篇
  1999年   1674篇
  1998年   1484篇
  1997年   1544篇
  1996年   1710篇
  1995年   1474篇
  1994年   1485篇
  1993年   1481篇
  1992年   1581篇
  1991年   1494篇
  1990年   1474篇
  1989年   1405篇
  1988年   1268篇
  1987年   1202篇
  1986年   1222篇
  1985年   1488篇
  1984年   1328篇
  1983年   1330篇
  1982年   1274篇
  1981年   1198篇
  1980年   1192篇
  1979年   1311篇
  1978年   1231篇
  1977年   1140篇
  1976年   1031篇
  1975年   835篇
  1974年   832篇
  1973年   805篇
  1971年   666篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
972.
973.
974.
975.
ABSTRACT

With increasing demand for improved medical equipment and healthcare, next-generation biomedical engineers need strong design skills. Equipping biomedical engineering students with tools for idea generation and development can increase student design success. Design Heuristics are an ideation tool developed through empirical studies of product designs. While identified in the mechanical engineering space, Design Heuristics may be applicable in biomedical engineering design. In our study, we implemented a Design Heuristics session during upper-level undergraduate and first-year graduate biomedical engineering design courses. We examined the applicability of Design Heuristics within individual and team concept generation contexts. The findings demonstrated that biomedical engineering students were able to use Design Heuristics to generate multiple concepts, and that initial concepts produced using Design Heuristics were carried over into final team design. The results support the applicability of Design Heuristics to student idea generation in biomedical engineering design.  相似文献   
976.
977.
Sexual harassment is an interdisciplinary topic in organizational research that has received increased attention with the rise of the #MeToo movement. The online environment has complicated the experiences of employees who are sexually harassed by a coworker. One particular medium where online sexual harassment occurs is on social networking sites (SNS), such as Facebook. This research report examined how victims of sexual harassment believe organizations should handle online sexual harassment. We qualitatively coded 153 responses to the question, “What else do you think employers could do to handle sexual harassment on Facebook?” Our findings demonstrated a clear tension between whether harassment on Facebook is a private concern of the employee or a public concern of the employer/organization. Some victims advocating keeping work friends off of Facebook, while others suggesting having open door policies, conversations, and/or trainings. The difference in these approaches illuminates how the victims grappled with the public/private tension, and whether the organization should be made aware of their situations or if victims should handle it themselves. Implications of this research suggest that the blurred boundaries between employee face-to-face and online sexual harassment should continue to be explored, including why victims report harassment and to whom they report it.  相似文献   
978.
This paper studies the publication productivity of inbreds and non‐inbreds among Russian academics. Existing literature provides ambiguous results on the relationship between inbred status and productivity. This may be explained by the use of different indicators for measuring publication productivity. We use data, which include indicators of both current publication productivity (at a certain point of time) and cumulative productivity (throughout the career) to identify whether inbreds and non‐inbreds differ in their productivity. We did not find any difference in current publication productivity of inbreds and non‐inbreds. We found, however, a difference in their cumulative publication productivity: non‐inbreds are being more productive on an individual level throughout their careers. Although the conclusions are based on the Russian data, the analysis provides an explanation for existing contradictory results on the relationship between academic inbreeding and productivity in general.  相似文献   
979.
980.
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