全文获取类型
收费全文 | 8148篇 |
免费 | 94篇 |
国内免费 | 84篇 |
专业分类
电工技术 | 29篇 |
综合类 | 4336篇 |
化学工业 | 405篇 |
金属工艺 | 101篇 |
机械仪表 | 124篇 |
建筑科学 | 582篇 |
矿业工程 | 27篇 |
能源动力 | 13篇 |
轻工业 | 113篇 |
水利工程 | 110篇 |
石油天然气 | 2篇 |
无线电 | 215篇 |
一般工业技术 | 162篇 |
冶金工业 | 1438篇 |
原子能技术 | 2篇 |
自动化技术 | 667篇 |
出版年
2023年 | 24篇 |
2022年 | 45篇 |
2021年 | 84篇 |
2020年 | 79篇 |
2019年 | 46篇 |
2018年 | 29篇 |
2017年 | 45篇 |
2016年 | 117篇 |
2015年 | 181篇 |
2014年 | 587篇 |
2013年 | 469篇 |
2012年 | 643篇 |
2011年 | 722篇 |
2010年 | 636篇 |
2009年 | 703篇 |
2008年 | 545篇 |
2007年 | 527篇 |
2006年 | 495篇 |
2005年 | 415篇 |
2004年 | 374篇 |
2003年 | 313篇 |
2002年 | 280篇 |
2001年 | 180篇 |
2000年 | 110篇 |
1999年 | 81篇 |
1998年 | 28篇 |
1997年 | 28篇 |
1996年 | 20篇 |
1995年 | 15篇 |
1994年 | 12篇 |
1988年 | 8篇 |
1987年 | 12篇 |
1986年 | 10篇 |
1985年 | 11篇 |
1979年 | 10篇 |
1976年 | 9篇 |
1975年 | 12篇 |
1966年 | 19篇 |
1965年 | 23篇 |
1964年 | 31篇 |
1963年 | 27篇 |
1962年 | 16篇 |
1961年 | 23篇 |
1960年 | 20篇 |
1959年 | 26篇 |
1958年 | 33篇 |
1957年 | 25篇 |
1956年 | 25篇 |
1955年 | 32篇 |
1954年 | 23篇 |
排序方式: 共有8326条查询结果,搜索用时 296 毫秒
1.
采取简单随机方法,从菏泽家政职业学院各个系随机选取6个班,以笔者自拟的调查问卷对该6个班的全体学生进行问卷调查,并采用二元logistic回归分析对问卷调查的结果进行多因素分析,最后得出结论,性别、所学专业、专业知识和技能、家人态度、创业资金来源、他人影响对高职院校学生创业意向的影响不显著,而内控制源、创业能效感、风险忍耐度、政府支持对高职院校学生创业意向有显著影响。 相似文献
2.
在线学习已逐渐成为高职院校一种重要学习形式,该领域也成为当前研究热点之一。对在线学习进行介绍,同时对大数据技术在在线学习平台中的应用进行分析,重点对五年制高职护生在线学习行为要素进行研究分析,为更好地开展在线学习评价提供参考,促进高职院校更好地开展在线学习,提高在线学习质量。 相似文献
3.
伴随着互联网+的风生水起,信息量暴增的大数据时代应运而来,"网络原住民"大学生不可避免、理所当然地处于大数据洪流之中,但也为其个人隐私保护带来了极大挑战。文章针对大数据带来的安全隐私问题,指出大学生个人隐私泄露的可能原因,提出可以采取的个人隐私保护措施,给出大数据时代隐私保护几种技术,期望能给相关人士提供有效参考。 相似文献
4.
Hua Pang 《Telematics and Informatics》2018,35(8):2147-2156
Although WeChat has recently spawned significant resolutions in technology-mediated social contact and interpersonal communication, the research regarding the social and psychological impacts of the newly emerging technology is relatively few. The primary purpose of the current empirical research is to unearth whether and how WeChat interaction could enhance overseas students’ sense of subjective well-being by concentrating on social integration, bridging relationships, and bonding relationships. Using web-based data of 228 Chinese subjects, the obtained results reveal that the time spent on WeChat significantly and directly impacts users’ subjective well-being. Additionally, the findings demonstrate that social integration, bridging relationships, bonding relationships are all significant predictors to subjective well-being. Furthermore, the perceptions of social integration and social capital could play the crucial mediating roles in the connection between WeChat use and the dependent variable of subjective well-being. Therefore, these outcomes may shed light on a more nuanced comprehending of the influence of the new social media interaction on sojourner’s social adaption and overall life quality in the digital age. 相似文献
5.
The objective of this article was to establish the significance of parameters relevant for urban square illumination, particularly those related with the color of light. Performed using a questionnaire and with 154 architecture students as respondents, the survey showed that the 18 parameters can be divided into two groups. The first group of 13 parameters refers to the overall impression, influencing the basic and most important lighting aims like safety, security, orientation, visual comfort, and amenity, whereas the second group includes parameters related to lighting features which may negatively influence the overall impression. The four parameters directly linked to the color of light were evaluated lower than expected, indicating that architecture students were probably translating their attitude toward color in architecture to color of light, thus underestimating this lighting parameter. The survey results also showed that female respondents are more sensitive to parameters, which affect safety and security. 相似文献
6.
Although the unprecedented prevalence of social media has infiltrated into international students’ daily trajectories and become an indispensable component of their intercultural communication, yet surprisingly few attempts have been implemented to systematically unpack how the innovative technology could play a role in these sojourners’ acculturation experiences and the consequences of migration and cross-cultural adaption. In order to address such research gap, the objective of this present article is to provide a review of academic, peer-reviewed journal studies that examined the potential effect of social media engagement on international university students’ acculturation process, coping strategies, and psychological adjustments during the period from 2010 to 2019. Moreover, building upon conceptualizations from new media and transcultural research literature, a conceptual framework was developed to classify the relevant studies for further analysis. Overall, these theories and studies synthesized in this paper emphasize the vital role of social media in the acculturation, coping behaviors and mental health for ethnic minorities in the host country. Additionally, certain dimensions of attitudes and behaviors through social media could exert the important influence on the psychological adaption. Therefore, conclusions of the research may assist to further inform practitioners who may encounter newcomers’ experiencing intercultural adjustments and psychological issues in the digital media age. Furthermore, this current review may also help educators determine certain barriers that have not been resolved in campus tactics which may influence the acculturation of sojourning populations. 相似文献
7.
张鹏 《吉林化工学院学报》2020,37(4):59-62
依据马克思主义哲学观对人的主体能动价值实现的条件,联系高校对大学生社会主义核心价值观培育的实践,尊重、培育、强化大学生信守社会主义核心价值观的主体性就应当基于其主体能动价值的实现,应当尊重、培育、强化自为、自觉、自由的“三自”理性的能动性,使之信守社会主义核心价值观的“三自”理性能动性向着由高校引领的方向演进。 相似文献
8.
This paper uses a mixed-methods approach to examine the relation between online academic disclosure and academic performance. A multi-ethnic sample of college students (N = 261; male = 66; female = 195; M age ≈ 22 years) responded to open-ended questions about their Facebook use. Thematic analysis revealed that over 14% of the Facebook wall posts/status updates (N = 714) contained academic themes; positive states were more frequent than negative and neutral states and students with lower GPAs expressed negative states more often. A path analysis suggested that academic performance may determine college students’ Facebook use, rather than the reverse. Implications for student support services are discussed. 相似文献
9.
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
10.