全文获取类型
收费全文 | 1693篇 |
免费 | 54篇 |
国内免费 | 22篇 |
专业分类
电工技术 | 6篇 |
综合类 | 212篇 |
化学工业 | 70篇 |
金属工艺 | 15篇 |
机械仪表 | 51篇 |
建筑科学 | 114篇 |
矿业工程 | 56篇 |
能源动力 | 14篇 |
轻工业 | 24篇 |
水利工程 | 34篇 |
石油天然气 | 23篇 |
无线电 | 131篇 |
一般工业技术 | 55篇 |
冶金工业 | 438篇 |
原子能技术 | 4篇 |
自动化技术 | 522篇 |
出版年
2023年 | 12篇 |
2022年 | 16篇 |
2021年 | 27篇 |
2020年 | 38篇 |
2019年 | 36篇 |
2018年 | 23篇 |
2017年 | 36篇 |
2016年 | 45篇 |
2015年 | 35篇 |
2014年 | 74篇 |
2013年 | 103篇 |
2012年 | 70篇 |
2011年 | 126篇 |
2010年 | 108篇 |
2009年 | 108篇 |
2008年 | 95篇 |
2007年 | 99篇 |
2006年 | 86篇 |
2005年 | 70篇 |
2004年 | 66篇 |
2003年 | 55篇 |
2002年 | 39篇 |
2001年 | 40篇 |
2000年 | 32篇 |
1999年 | 31篇 |
1998年 | 18篇 |
1997年 | 17篇 |
1996年 | 21篇 |
1995年 | 14篇 |
1994年 | 14篇 |
1993年 | 12篇 |
1992年 | 13篇 |
1991年 | 5篇 |
1990年 | 11篇 |
1989年 | 13篇 |
1988年 | 10篇 |
1987年 | 12篇 |
1986年 | 15篇 |
1985年 | 12篇 |
1983年 | 10篇 |
1981年 | 13篇 |
1975年 | 9篇 |
1974年 | 6篇 |
1973年 | 5篇 |
1970年 | 4篇 |
1968年 | 8篇 |
1967年 | 4篇 |
1966年 | 7篇 |
1965年 | 4篇 |
1958年 | 5篇 |
排序方式: 共有1769条查询结果,搜索用时 218 毫秒
1.
No authorship indicated 《Canadian Metallurgical Quarterly》2004,59(8):673
Provides the biography of Sheldon Cohen and announces that he has received the APA Award for Distinguished Scientific Contributions (2004) for his elegant research in psychoneuroimmunology. The award citation and a selected bibliography are also provided. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
2.
When Teachers' and Parents' Values Differ: Teachers' Ratings of Academic Competence in Children From Low-Income Families. 总被引:1,自引:0,他引:1
The authors examined predictors of teachers' ratings of academic competence of 105 kindergarten children from low-income families. Teachers rated target children's expected competence in literacy and math and completed questions about their perceptions of congruence-dissonance between themselves and the child's parents regarding education-related values. Independent examiners assessed children's literacy and math skills. Teachers' instructional styles were observed and rated along dimensions of curriculum-centered and student-centered practices. Controlling for children's skills and socioeconomic status, teachers rated children as less competent when they perceived value differences with parents. These patterns were stronger for teachers who exhibited curriculum-centered, rather than student-centered, practices. The findings suggest a mechanism by which some children from low-income families enter a path of diminished expectations. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
3.
Struts是基于模型视图控制体系(MVC)的Web应用框架。详细介绍了基于MVC体系的Struts工作原理,探讨应用Struts框架构建企业级应用系统的步骤及方法。给出了基于Struts的科研资源计划系(SRRPS)的设计实现,结果表明Struts框架能极大地提高系统的可扩展性、可重用性及可维护性。 相似文献
4.
Psychologists' appropriation of language and ideas from Thomas Kuhn's (1962, 1970b) The Structure of Scientific Revolutions reveals deep and contradictory concerns about truth, science, and the progress of the field. The author argues that psychologists, uncomfortably straddling natural and social science traditions, reference Structure for 2 reasons largely overlooked: first, because it presents an intermediate, naturalistic position in the war between relativist and rationalist views of scientific truth, and second, because it presents a psychologized model of scientific change. The author suggests that the history of this mutual influence--psychologists being influenced by Kuhn and vice versa--may usefuly inform current practices of psychological science. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
5.
No authorship indicated 《Canadian Metallurgical Quarterly》2007,62(8):768
Presents the citation, biography, and selected bibliography for Karl G. J?reskog, one of the 2007 recipients of the American Psychological Association's Award for Distinguished Scientific Applications of Psychology. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
6.
No authorship indicated 《Canadian Metallurgical Quarterly》2007,62(8):786
Presents the citation, biography, and selected bibliography for J?rn Diedrichsen, one of the 2007 recipients of the American Psychological Association's Award for Distinguished Scientific Early Career Contributions to Psychology (perception/motor performance). (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
7.
No authorship indicated 《Canadian Metallurgical Quarterly》2007,62(8):796
Presents the citation, biography, and selected bibliography for Patrik O. Vuilleumier, one of the 2007 recipients of the American Psychological Association's Award for Distinguished Scientific Early Career Contributions to Psychology (behavioral and cognitive neuroscience). (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
8.
No authorship indicated 《Canadian Metallurgical Quarterly》2007,62(8):788
Presents the citation, biography, and selected bibliography for R. Chris Fraley, one of the 2007 recipients of the American Psychological Association's Award for Distinguished Scientific Early Career Contributions to Psychology (individual differences). (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
9.
The main purpose of the study reported here was to investigate the relative importance of complexity of syllable structure and task differences in measuring phonological awareness in low-literacy adults. This study is a replication of a study with children conducted by S. A. Stahl and B. A. Murray (1994). Results indicated that the complexity of syllable structure did indeed better describe the construct of phonological awareness in low-literacy adults. At the same time, the authors also found some differences in the pattern of literacy acquisition for their Spanish adults in comparison with child literacy acquisition in English. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
10.