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   124861篇
  免费   1901篇
  国内免费   243篇
教育   86920篇
科学研究   13468篇
各国文化   1989篇
体育   9635篇
综合类   194篇
文化理论   1079篇
信息传播   13720篇
  2021年   951篇
  2020年   1657篇
  2019年   2578篇
  2018年   3128篇
  2017年   3436篇
  2016年   3464篇
  2015年   2328篇
  2014年   3199篇
  2013年   27413篇
  2012年   2435篇
  2011年   2859篇
  2010年   2396篇
  2009年   2639篇
  2008年   2480篇
  2007年   2237篇
  2006年   2444篇
  2005年   2440篇
  2004年   3085篇
  2003年   2391篇
  2002年   2244篇
  2001年   2104篇
  2000年   1762篇
  1999年   1660篇
  1998年   1482篇
  1997年   1537篇
  1996年   1698篇
  1995年   1472篇
  1994年   1471篇
  1993年   1478篇
  1992年   1534篇
  1991年   1449篇
  1990年   1442篇
  1989年   1366篇
  1988年   1244篇
  1987年   1156篇
  1986年   1182篇
  1985年   1454篇
  1984年   1317篇
  1983年   1298篇
  1982年   1257篇
  1981年   1178篇
  1980年   1163篇
  1979年   1270篇
  1978年   1219篇
  1977年   1129篇
  1976年   1015篇
  1975年   816篇
  1974年   816篇
  1973年   782篇
  1971年   631篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
971.
Adjusting speed to maintain fast and accurate performance is critical to goal-directed behavior. This study examined development of response time adjustments in the stop signal task in 13,709 individuals aged 6–17 years (49.0% Caucasian) across four trial types: correct and incorrect go, successful (stop-inhibit), and failed (stop-respond) trials. People sped more after correct than incorrect go responses and slowed more after failed than successful stop trials. Greater slowing after stop-respond but less slowing after stop-inhibit trials was associated with better response inhibition. Response time adjustments were evident in children as young as age 6, developed throughout childhood, and plateaued by age 10. Results were consistent with the predictions of the error detection and shifting goal priority hypotheses for adjustments.  相似文献   
972.
973.
974.
975.
976.
977.
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   
978.
979.
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   
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