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   124911篇
  免费   1905篇
  国内免费   242篇
教育   87019篇
科学研究   13448篇
各国文化   1992篇
体育   9599篇
综合类   195篇
文化理论   1077篇
信息传播   13728篇
  2021年   956篇
  2020年   1671篇
  2019年   2582篇
  2018年   3154篇
  2017年   3446篇
  2016年   3484篇
  2015年   2325篇
  2014年   3215篇
  2013年   27423篇
  2012年   2451篇
  2011年   2875篇
  2010年   2423篇
  2009年   2661篇
  2008年   2485篇
  2007年   2244篇
  2006年   2440篇
  2005年   2436篇
  2004年   3089篇
  2003年   2388篇
  2002年   2238篇
  2001年   2097篇
  2000年   1738篇
  1999年   1644篇
  1998年   1488篇
  1997年   1540篇
  1996年   1699篇
  1995年   1478篇
  1994年   1474篇
  1993年   1481篇
  1992年   1527篇
  1991年   1443篇
  1990年   1445篇
  1989年   1371篇
  1988年   1239篇
  1987年   1143篇
  1986年   1180篇
  1985年   1447篇
  1984年   1311篇
  1983年   1298篇
  1982年   1254篇
  1981年   1171篇
  1980年   1162篇
  1979年   1266篇
  1978年   1213篇
  1977年   1126篇
  1976年   1009篇
  1975年   815篇
  1974年   812篇
  1973年   784篇
  1971年   629篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
961.
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   
962.
963.
964.
965.
966.
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   
967.
968.
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   
969.
970.
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