全文获取类型
收费全文 | 4006篇 |
免费 | 50篇 |
国内免费 | 4篇 |
专业分类
教育 | 2929篇 |
科学研究 | 272篇 |
各国文化 | 70篇 |
体育 | 360篇 |
综合类 | 1篇 |
文化理论 | 38篇 |
信息传播 | 390篇 |
出版年
2023年 | 14篇 |
2022年 | 21篇 |
2021年 | 42篇 |
2020年 | 69篇 |
2019年 | 115篇 |
2018年 | 141篇 |
2017年 | 156篇 |
2016年 | 133篇 |
2015年 | 93篇 |
2014年 | 128篇 |
2013年 | 923篇 |
2012年 | 120篇 |
2011年 | 101篇 |
2010年 | 88篇 |
2009年 | 101篇 |
2008年 | 122篇 |
2007年 | 112篇 |
2006年 | 103篇 |
2005年 | 98篇 |
2004年 | 90篇 |
2003年 | 76篇 |
2002年 | 78篇 |
2001年 | 52篇 |
2000年 | 62篇 |
1999年 | 62篇 |
1998年 | 45篇 |
1997年 | 45篇 |
1996年 | 61篇 |
1995年 | 47篇 |
1994年 | 51篇 |
1993年 | 34篇 |
1992年 | 50篇 |
1991年 | 36篇 |
1990年 | 44篇 |
1989年 | 36篇 |
1988年 | 29篇 |
1987年 | 24篇 |
1986年 | 27篇 |
1985年 | 23篇 |
1984年 | 21篇 |
1983年 | 15篇 |
1982年 | 24篇 |
1981年 | 29篇 |
1980年 | 27篇 |
1979年 | 18篇 |
1978年 | 22篇 |
1976年 | 19篇 |
1975年 | 14篇 |
1974年 | 20篇 |
1973年 | 15篇 |
排序方式: 共有4060条查询结果,搜索用时 0 毫秒
121.
Doug MacLean Paul M. Gannon 《International Journal of Disability, Development & Education》1997,44(3):217-228
The study measured the general attitudes towards disability of academics, administrative staff, and students in a small rural University. Respondents were also asked to comment on the nature of support that might be provided for a student with an emotional disability. There were some significant differences in level and nature of support for students with an emotional disability among academics, administrative staff, and students. These differences were related to the levels of comfort with, and sympathy felt towards, students with an emotional disability. However, overall the results suggest that university students with expressed emotional difficulties are liable to be relatively negatively regarded and are not liable to receive much concrete assistance for the difficulties they face. It is proposed that the data supports the notion that academics, of all the groups measured, are best placed to decide types of support for students with an emotional disability on a case by case basis. 相似文献
122.
Salmanzadeh A Kittur H Sano MB C Roberts P Schmelz EM Davalos RV 《Biomicrofluidics》2012,6(2):24104-2410413
Ovarian cancer is the leading cause of death from gynecological malignancies in women. The primary challenge is the detection of the cancer at an early stage, since this drastically increases the survival rate. In this study we investigated the dielectrophoretic responses of progressive stages of mouse ovarian surface epithelial (MOSE) cells, as well as mouse fibroblast and macrophage cell lines, utilizing contactless dielectrophoresis (cDEP). cDEP is a relatively new cell manipulation technique that has addressed some of the challenges of conventional dielectrophoretic methods. To evaluate our microfluidic device performance, we computationally studied the effects of altering various geometrical parameters, such as the size and arrangement of insulating structures, on dielectrophoretic and drag forces. We found that the trapping voltage of MOSE cells increases as the cells progress from a non-tumorigenic, benign cell to a tumorigenic, malignant phenotype. Additionally, all MOSE cells display unique behavior compared to fibroblasts and macrophages, representing normal and inflammatory cells found in the peritoneal fluid. Based on these findings, we predict that cDEP can be utilized for isolation of ovarian cancer cells from peritoneal fluid as an early cancer detection tool. 相似文献
123.
124.
125.
126.
127.
Paul Gibbs 《Educational Philosophy and Theory》2018,50(14):1392-1393
128.
129.
Educational leaders continually must be vigilant about their actions as they speak volumes about the values that the leader supports. It is impossible for an educational leader to take an action without generating some comment about how things should be done—which by definition is moral action. What's more, everyone is watching—especially the students. This article explores leadership relationships, interrelationships, and interdependence—and how administrative “moral leadership” rests with the institution's leader. First, it examines the concept of systems thinking to determine how relationships, support structures, and decisions made by school leaders impact the entire school—especially the students and the community at large. Second, it explores and furthers our understanding of moral leadership models by synthesizing concepts in the literature and offers a new paradigm of moral leadership for educational leaders in the 21st century. 相似文献
130.
The need for supporting student writing has received much attention in writing research. One specific type of support is feedback—including peer feedback—on the writing process. Despite the wealth of literature on both feedback and academic writing, there is little empirical evidence on what type of feedback best promotes writing in online environments. This article reports on research that tries to determine what type of feedback best improves the quality of collaborative writing and what the effects of feedback are on student learning in an environment based on asynchronous written communication. The results reveal that concerning the type of feedback, epistemic feedback or epistemic and suggestive feedback best improve the quality of collaborative writing performance. The nature of the feedback-giver (whether teacher feedback or teacher and peer) makes a difference to the final text only when the feedback is epistemic, or epistemic and suggestive. 相似文献