全文获取类型
收费全文 | 1579篇 |
免费 | 235篇 |
专业分类
1814篇 |
出版年
2023年 | 41篇 |
2022年 | 5篇 |
2021年 | 9篇 |
2020年 | 102篇 |
2019年 | 32篇 |
2018年 | 23篇 |
2017年 | 90篇 |
2016年 | 90篇 |
2015年 | 79篇 |
2014年 | 86篇 |
2013年 | 338篇 |
2012年 | 60篇 |
2011年 | 30篇 |
2010年 | 52篇 |
2009年 | 67篇 |
2008年 | 43篇 |
2007年 | 37篇 |
2006年 | 48篇 |
2005年 | 18篇 |
2004年 | 19篇 |
2003年 | 11篇 |
2002年 | 15篇 |
2001年 | 13篇 |
2000年 | 15篇 |
1999年 | 12篇 |
1998年 | 15篇 |
1997年 | 7篇 |
1996年 | 40篇 |
1995年 | 32篇 |
1994年 | 25篇 |
1993年 | 23篇 |
1992年 | 35篇 |
1991年 | 39篇 |
1990年 | 38篇 |
1989年 | 23篇 |
1988年 | 23篇 |
1987年 | 21篇 |
1986年 | 17篇 |
1985年 | 4篇 |
1984年 | 3篇 |
1982年 | 9篇 |
1981年 | 9篇 |
1980年 | 16篇 |
1979年 | 19篇 |
1978年 | 19篇 |
1977年 | 22篇 |
1973年 | 4篇 |
1967年 | 4篇 |
1966年 | 5篇 |
1964年 | 4篇 |
排序方式: 共有1814条查询结果,搜索用时 0 毫秒
231.
232.
233.
234.
235.
236.
237.
Marco Sarchiapone MD Vladimir Carli MD PhD Massimo Di Giannantonio MD Alec Roy MD 《Suicide & life-threatening behavior》2009,39(3):343-350
We wished to examine determinants of suicidal behavior in prisoners. 903 male prisoners had a psychiatric interview which included various psychometric tests. Suicide attempters were compared with prisoners who had never attempted suicide. Significantly more of the attempters had a history of psychiatric disorder, substance abuse, a family history of suicidal behavior, convictions for violent crime, had exhibited aggressive behavior in jail, and had higher BGLHA aggression scores. A similar pattern of risk factors was found for prisoners with suicidal ideation. A lifetime history of attempting suicide, or of having suicidal ideation, is frequent in prisoners. Risk factors include family, developmental, aggression, personality, psychiatric, and substance abuse factors. 相似文献
238.
Sarah Kuhn PhD 《Science and engineering ethics》1998,4(4):457-472
To design effective and socially sensitive systems, engineers must be able to integrate a technology-based approach to engineering
problems with concerns for social impact and the context of use. The conventional approach to engineering education is largely
technology-based, and even when additional courses with a social orientation are added, engineering graduates are often not
well prepared to design user- and context-sensitive systems. Using data from interviews with three engineering students who
had significant exposure to a socially-oriented perspective on production systems design, this paper argues that engineering
students may have difficulty integrating in their own practice the technology-based and the socially-oriented perspectives
on production. To enhance engineering students' ability to create systems that integrate both perspectives, and to relieve
the intense cognitive and emotional pain that can be experienced by students exposed to both perspectives but unable to reconcile
them, this paper reinforces the importance of teaching students the meta skill, design. A design perspective can help students integrate varied, sometimes conflicting, perspectives, and reach beyond customer-defined
constraints to consider workplace and social impact. 相似文献
239.
240.
Ted Peters 《Theology & Science》2016,14(2):143-146
Is there a war going on between science and religion or not? The Center for Theology and the Natural Sciences and many other bridge-building advocates deny that a war must be fought between genuine science and authentic faith. Yet, a new book, Faith vs. Fact, by Jerry Coyne, launches a new attack against those with faith in God. This essay asks whether such an attack comes from genuine science or from scientism—a materialist ideology that claims rational science as its ally. 相似文献