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   13951篇
  免费   183篇
  国内免费   7篇
教育   10196篇
科学研究   1207篇
各国文化   80篇
体育   1113篇
综合类   7篇
文化理论   86篇
信息传播   1452篇
  2021年   102篇
  2020年   154篇
  2019年   253篇
  2018年   350篇
  2017年   359篇
  2016年   328篇
  2015年   201篇
  2014年   279篇
  2013年   2582篇
  2012年   297篇
  2011年   361篇
  2010年   223篇
  2009年   216篇
  2008年   322篇
  2007年   232篇
  2006年   301篇
  2005年   198篇
  2004年   183篇
  2003年   175篇
  2002年   214篇
  2001年   319篇
  2000年   287篇
  1999年   259篇
  1998年   128篇
  1997年   156篇
  1996年   171篇
  1995年   175篇
  1994年   139篇
  1993年   161篇
  1992年   234篇
  1991年   209篇
  1990年   207篇
  1989年   242篇
  1988年   244篇
  1987年   205篇
  1986年   204篇
  1985年   216篇
  1984年   189篇
  1983年   229篇
  1982年   170篇
  1981年   159篇
  1980年   156篇
  1979年   229篇
  1978年   181篇
  1977年   164篇
  1976年   149篇
  1975年   128篇
  1974年   119篇
  1973年   125篇
  1971年   106篇
排序方式: 共有10000条查询结果,搜索用时 18 毫秒
921.
This article examines academic administrators’ attitudes towards the academic evaluation process in the US and those factors that are utilised to improve teaching. We use path regressions to examine satisfaction with evaluation procedures, as well as the direct and indirect effects of these factors on perceptions of whether the evaluation process facilitates quality instruction. With increased pressure for accountability being placed on higher education, it is important to ensure that we are meeting both public and academic expectations. The evaluation process is an important tool to ensure the university’s goals and values are articulated and that academics can be successful in their individual career paths. The problem is most research finds flaws with the current method of evaluation, and academics and academic administrators are sceptical about the process and results. We find there are environmental factors that influence academic administrators’ perceptions of academic evaluations and the ability to improve classroom instruction.  相似文献   
922.
Implementing service learning into college courses has been shown to have positive benefits for both students and community members; however, service learning has not been largely evaluated in the literature on human sexuality courses. Thus, the purpose of the current study was to design, implement, and evaluate a service learning project in a human sexuality class. Students who were enrolled in a human sexuality class designed and delivered two outreach presentations at their university as part of their service learning projects. The presentations were geared toward other college students with specific majors (i.e., future teachers and athletic coaches) and focused on areas related to child and youth sexuality. Overall, the service learning projects garnered positive support from both the students and the attendees at the presentations. Thus, results suggest that service learning is a useful pedagogical tool that college level instructors might consider implementing into their human sexuality courses.  相似文献   
923.
This article describes the challenges associated with outcomes-based education reform as experienced by two novice elementary teachers. Interviews with the teachers provide insights into the tensions between their teaching beliefs and the practices employed in their local contexts. Specifically, pressures to both focus on standardized measures of student achievement and to conform to the social norms of the schools are explored. The authors advocate for the need for situated discussions about these tensions during the first year of teaching and recognition of the complexity of teaching and learning by all stakeholders.  相似文献   
924.
925.
926.
927.
Knight DM 《Endeavour》2000,24(4):165-169
Humphry Davy (1778–1829) was one of the first professional scientists, earning his living and rising spectacularly from an impoverished upbringing in Cornwall to be President of the Royal Society and a baronet. He owed his rise to patronage as well as to his range of abilities: as a lecturer, as a chemical theorist and as a very early applied scientist. But his exalted position brought him little happiness, for he could not satisfy all the hopes put upon him as the successor to Sir Joseph Banks. Admired rather than loved, he became unpopular and was seen as haughty. In his last two years, spent wandering lonely and sickly in Italy and the Alps, he sought to make sense of his life, writing dialogues as his bequest to the new generation.  相似文献   
928.
An external quality assessment was conducted to assess the performance of various laboratories for RIA of thhyroid related hormones in two phases. In the first phase thirty five laboratories participated. At the end of first phase a meeting cum workshop was organised to discuss the results of first phase, difficultires faced by the participants and pinpoint the short oming. A second phase was then initiated with an objective of improvement in the performance, if any, where twelve samples from four pools were distributed to twenty four laboratories who participated for the second phase. The overall return of the results increased significantly from 71.8% (1586/2208) for the first phase to 92.4% (732/792) for the second phase. The inter laboratory %CV for T3, T4 and TSH were lower during the second phase (30.6%, 19.0% and 31.6% respectively) as compared to those observed during first phase (36.3%, 22.7% and 52.8% respectively). Similarly, there was an improvement in reproducibility of ALTM as %CV for T3, T4 and TSH decreased from 6.0%, 9.8% and 13.4% respectively to 4.5%, 4.6% and 8.5% respectively. The individual performances of the participating laboratories viz. bias, variability of bias and imprecision also showed a trend towards improvement as percent laboratories having desirable or acceptable results for T3, T4 and TSH increased from 10.7%, 60.7% and 0.0% respectively to 20.8%, 66.7% and 22.2% respectively. External quality assessment thus appears to be beneficial in assessing the performane of a laboratory in comfparison with other laboratories and indeed helps in improving the performance.  相似文献   
929.
Circadian rhythm of serum glucose, pyruvate, lactate and lactate dehydrogenase (LDH) was studied in normal healthy young volunteers at the onset (I Group, 7 cases) and peak (II Group, 8 cases) of winters in India with highly varied temperature. There was a significant difference, in the circadian rhythm of glucose, pyruvate and lactate dehydrogenase (LDH) of the two groups. A clockwise shift was observed in acrophase except in serum lactate, which is related to the energy demand in association with time qualified changes in diurnal activity of the individuals and change in photoperiod.  相似文献   
930.
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