全文获取类型
收费全文 | 4132篇 |
免费 | 48篇 |
国内免费 | 32篇 |
专业分类
电工技术 | 12篇 |
综合类 | 1895篇 |
化学工业 | 148篇 |
金属工艺 | 39篇 |
机械仪表 | 38篇 |
建筑科学 | 219篇 |
矿业工程 | 14篇 |
能源动力 | 8篇 |
轻工业 | 58篇 |
水利工程 | 37篇 |
石油天然气 | 1篇 |
无线电 | 117篇 |
一般工业技术 | 108篇 |
冶金工业 | 1174篇 |
原子能技术 | 2篇 |
自动化技术 | 342篇 |
出版年
2023年 | 17篇 |
2022年 | 25篇 |
2021年 | 54篇 |
2020年 | 41篇 |
2019年 | 30篇 |
2018年 | 31篇 |
2017年 | 36篇 |
2016年 | 72篇 |
2015年 | 88篇 |
2014年 | 262篇 |
2013年 | 215篇 |
2012年 | 275篇 |
2011年 | 324篇 |
2010年 | 302篇 |
2009年 | 332篇 |
2008年 | 238篇 |
2007年 | 249篇 |
2006年 | 233篇 |
2005年 | 167篇 |
2004年 | 207篇 |
2003年 | 178篇 |
2002年 | 167篇 |
2001年 | 113篇 |
2000年 | 44篇 |
1999年 | 39篇 |
1998年 | 14篇 |
1997年 | 15篇 |
1996年 | 8篇 |
1995年 | 10篇 |
1988年 | 8篇 |
1987年 | 12篇 |
1986年 | 10篇 |
1985年 | 11篇 |
1979年 | 9篇 |
1976年 | 8篇 |
1975年 | 9篇 |
1969年 | 7篇 |
1966年 | 11篇 |
1965年 | 18篇 |
1964年 | 22篇 |
1963年 | 20篇 |
1962年 | 13篇 |
1961年 | 21篇 |
1960年 | 17篇 |
1959年 | 21篇 |
1958年 | 28篇 |
1957年 | 20篇 |
1956年 | 22篇 |
1955年 | 28篇 |
1954年 | 19篇 |
排序方式: 共有4212条查询结果,搜索用时 484 毫秒
1.
心理测试的根本目的是为了让人们在测试过程中,产生某些特定行为,即个体对测试题目的反应,并根据这些行为反应来推论其相应的心理特性。在一定程度上帮助我们了解人类的心理活动,并从中得到帮助。因此,本文对基于学生群体心理测试系统的设计进行深入研究。 相似文献
2.
3.
吴远根 《安徽冶金科技职业学院学报》2003,13(3):45-47
分析高职学生思想状态的多层次性,提出以正面的思想教育和启发引导为主,同时加强规章制度的制约性,以提高教育管理工作的效果. 相似文献
4.
Beebe-Frankenberger Margaret; Bocian Kathleen M.; MacMillan Donald L.; Gresham Frank M. 《Canadian Metallurgical Quarterly》2004,96(2):204
A cohort of 2nd-grade students provided comparisons of academic and social competence based on school retention/promotion decisions. Sample groups were (a) retained, (b) at risk for retention, (c) special education, and (d) promoted. Findings suggested most children with academic deficiencies are identified by schools early and are sorted into educational treatments differing in intensity that represent a continuum of competence. The authors provide empirical evidence counter to the assumptions that retained students have the requisite ability to catch up and have more problem behaviors than other low-achieving students. The relevance of high-stakes test scores for promotion/retention decisions and the parallels between schools' implementation of retention policy and implementation of regulations for identifying children with disabilities are included in the discussion. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
5.
Finkel Melinda J.; Storaasli Ragnar D.; Bandele Anthony; Schaefer Vivian 《Canadian Metallurgical Quarterly》2003,34(5):555
How can psychologists and graduate students become more affirmative of lesbian, gay, bisexual, and transgender (LGBT) issues? Safe Zone is a diversity-training program to increase sensitivity toward, knowledge of, and advocacy for LGBT populations and issues that affect them. In this exploratory study, the implementation of Safe Zone is described within a school of professional psychology; its effectiveness was assessed by self-reported behavioral and attitudinal changes and from participant evaluations. Results were encouraging with regard to the goals of Safe Zone and its adaptation to institutions interested in improving relations with the LGBT community, but additional empirical studies are needed. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
6.
试论当代大学生IT素质的培养 总被引:1,自引:0,他引:1
成立 《徐州建筑职业技术学院学报》2005,5(2):57-60
从IT素质的涵义出发,论述了IT素质的涵盖内容、培养大学生IT素质的重要性以及IT素质的本质与特点.对高校树立人才培养新理念、培养优秀IT人才提出了有关建议及应对措施。 相似文献
7.
刘洪 《湖南冶金职业技术学院学报》2004,(3)
心理健康不仅是时代发展对教育的必然要求,而且是实施素质教育的目标之一。为了培养高职学生良好的心理素质,针对高职学生心理素质存在的问题,就如何加强学生心理素质教育进行了探讨。 相似文献
8.
Stereotype threat research has demonstrated that stereotypes can harm student performance in the face of public evaluation by peers or an experimenter. The current study examined whether stereotypes can also threaten in private settings. Female students completed a math test in 3-person groups, which consisted of either 2 other women (same gender) or 2 men (minority). In addition, students either believed their performance would be broadcasted to their peers (public) or not (private). Results revealed that minority students performed worse than same-gender students in both public and private environments. This finding supports the concept of threatening intellectual environments and shows how far reaching the effects of stereotypes can be. The authors discuss these findings in relation to research on tokenism and to stereotype threat and its educational implications. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
9.
Friendship affects individual and organizational well-being through direct relations, social positions, and complex network structures. In this study, the authors use longitudinal data from 2 groups of master's of business administration students to increase understanding of how friendship networks develop. The authors propose and test a dynamic model in which attribute similarity facilitates dyadic friendship ties, as well as similar network centrality and social position; early friendship increases later similarity in structural position and centrality; and early structural similarity enhances the likelihood of future friendship. Findings largely supported the model, demonstrating how homophily and early social contacts can jointly shape maturing friendship networks. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
10.
Kahler Christopher W.; Read Jennifer P.; Wood Mark D.; Palfai Tibor P. 《Canadian Metallurgical Quarterly》2003,17(3):226
Structural equation modeling was used to test the mediational role of social environmental selection on alcohol use in cross-sectional samples of 447 students from a rural state university and 421 students from an urban private university. Results showed that male gender, White ethnicity, and sensation seeking were uniquely associated with greater alcohol use. Mediational analyses indicated that socioenvironmental factors (i.e., Greek involvement, friends' approval of drinking/getting drunk) were positively associated with alcohol use and significantly accounted for parts of the effects of ethnicity and sensation seeking, but not gender, on alcohol use. Results suggest that White students and those high on sensation seeking may drink more heavily in college, in part because they select social environments in which alcohol use is encouraged. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献