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   13817篇
  免费   226篇
  国内免费   11篇
教育   9588篇
科学研究   1690篇
各国文化   128篇
体育   1043篇
综合类   17篇
文化理论   171篇
信息传播   1417篇
  2022年   99篇
  2021年   150篇
  2020年   232篇
  2019年   324篇
  2018年   438篇
  2017年   479篇
  2016年   424篇
  2015年   274篇
  2014年   401篇
  2013年   2262篇
  2012年   337篇
  2011年   318篇
  2010年   301篇
  2009年   264篇
  2008年   283篇
  2007年   293篇
  2006年   279篇
  2005年   229篇
  2004年   261篇
  2003年   232篇
  2002年   239篇
  2001年   313篇
  2000年   337篇
  1999年   255篇
  1998年   140篇
  1997年   184篇
  1996年   174篇
  1995年   119篇
  1994年   133篇
  1993年   116篇
  1992年   197篇
  1991年   183篇
  1990年   215篇
  1989年   212篇
  1988年   180篇
  1987年   193篇
  1986年   172篇
  1985年   208篇
  1984年   150篇
  1983年   132篇
  1982年   124篇
  1981年   110篇
  1980年   112篇
  1979年   175篇
  1978年   130篇
  1977年   116篇
  1976年   89篇
  1975年   92篇
  1974年   94篇
  1973年   92篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
981.
982.
983.
This paper presents a game of industrialisation, based on a paper airplane, that mimics real world production ramp-up and blends classical engineering courses together. It is based on a low cost product so that it can be mass produced. The game targets graduate students and practitioners in engineering fields. For students, it offers an experiment in which methods learned in separate courses can be applied. For practitioners, it affords an opportunity to engage in reflexive practices related to industrialisation. Both students and practitioners are able to experience integrated management, required by industrialisation, in a controlled environment: the laboratory.  相似文献   
984.
An Australian study of generic competencies required by engineers   总被引:1,自引:1,他引:0  
Engineering curricula have expanded in recent decades. In addition to science and technical engineering, they now include several non-technical competencies. This is a trend reinforced by programme accreditation. The authors take the viewpoint that it is important to ensure that graduates have the competencies they will require for their work. The following question is addressed: What are the generic competencies that engineers graduating in Australia require for their work as engineers?

Competencies were identified from a broad range of literature and then rated by 300 established engineers for importance to their jobs. The results indicated that non-technical, attitudinal and technical competencies were perceived to be important. Eleven competency factors were revealed empirically. Profiles of these competency factors among graduates would assist evaluation and improvement of engineering programmes. This is the first quantitative study conducted in Australia that encompassed all engineering disciplines and focused on established engineers rather than recent graduates.  相似文献   

985.
Wisconsin's influential Learnfare initiative is a conditional cash penalty program that sanctions a family's welfare grant when covered teens fail to meet school attendance targets. In the presence of reference-dependent preferences, Learnfare provides uniquely powerful financial incentives for student performance. However, a 10-county random-assignment evaluation suggested that Learnfare had no sustained effects on school enrollment and attendance. This study evaluates the data from this randomized field experiment. In Milwaukee County, the Learnfare procedures were poorly implemented and the random-assignment process failed to produce balanced baseline traits. However, in the nine remaining counties, Learnfare increased school enrollment by 3.5 percent (effect size = 0.08) and attendance by 4.5 percent (effect size = 0.10). These results suggest that well-designed financial incentives may be an effective mechanism for improving the school persistence of at-risk students at scale.  相似文献   
986.
Experience of cooperative learning in engineering   总被引:1,自引:1,他引:0  
The objective of this work is to share the authors’ experience towards a different mode of teaching/learning method. Cooperative learning (Jigsaw) was employed on the University of Vigo's fourth-year engineering students. The results of the experience show that cooperative learning is quite a viable alternative to the classical way of lecturing at the university when the number of students is not too high. The authors’ observation indicates that students did not show a lot of interest towards the new learning style but their resistance changed once they began the activity. The Jigsaw method has proved to be a useful tool for improving the learning process so that students have the opportunity to participate actively in the learning activities.  相似文献   
987.
This study seeks to examine key extrinsic and intrinsic factors that encourage or discourage persistence in attaining an engineering degree and pursuing an engineering-related career among both male and female undergraduates. Quantitative and qualitative findings from nine participating undergraduate degree programmes reveal that career expectations formulated through educational experiences as undergraduates play a key role in motivating students. Among females, faculty interaction in the classroom, such as feedback received and the degree to which the faculty treat them with respect, is an important encouraging factor. For both males and females, discouraging elements of the undergraduate experience include the amount of time for coursework, competition in engineering classes and grades. The findings have several practical implications that faculty and administrators can employ in shaping the undergraduate experience to encourage short- and long-term interest in engineering among both male and female students.  相似文献   
988.
In many Western countries the pressure exerted on immigrants to integrate has become intense in recent years. Efforts to preserve their ethnic identity through multicultural recognition has now been replaced by the requirements of active civic participation and assimilation. Of course integration is considered important not only for the immigrant parents but also for their children. The central question in this article is whether there is a relationship between the degree of integration of the immigrant parents and the generation of their children on the one hand and the level of language and numeracy achievement of the children on the other. To answer this question we use data collected in 2008 from the Dutch COOL5–18 cohort study. The information comes from more than 9000 immigrant and 16,000 indigenous children and their parents. The results show that as immigrant parents are better integrated and their children are of later generations, the language and numeracy skills of the children improve, though there remain large differences in achievement between different ethnic groups.  相似文献   
989.
Today's doctoral programs continue to prepare students for a traditional academic career path despite the inadequate supply of research-focused faculty positions. We advocate for a broader doctoral curriculum that prepares trainees for a wide range of science-related career paths. In support of this argument, we describe data from our survey of doctoral students in the basic biomedical sciences at University of California, San Francisco (UCSF). Midway through graduate training, UCSF students are already considering a broad range of career options, with one-third intending to pursue a non-research career path. To better support this branching career pipeline, we recommend that national standards for training and mentoring include emphasis on career planning and professional skills development to ensure the success of PhD-level scientists as they contribute to a broadly defined global scientific enterprise.  相似文献   
990.
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