首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1035篇
  免费   15篇
教育   751篇
科学研究   38篇
各国文化   21篇
体育   102篇
综合类   1篇
文化理论   23篇
信息传播   114篇
  2021年   6篇
  2020年   14篇
  2019年   17篇
  2018年   19篇
  2017年   22篇
  2016年   24篇
  2015年   19篇
  2014年   32篇
  2013年   264篇
  2012年   28篇
  2011年   28篇
  2010年   23篇
  2009年   17篇
  2008年   22篇
  2007年   27篇
  2006年   22篇
  2005年   26篇
  2004年   19篇
  2003年   24篇
  2002年   21篇
  2001年   8篇
  2000年   21篇
  1999年   5篇
  1998年   9篇
  1997年   10篇
  1996年   12篇
  1995年   12篇
  1994年   14篇
  1993年   20篇
  1992年   15篇
  1991年   23篇
  1990年   14篇
  1989年   14篇
  1988年   13篇
  1987年   9篇
  1986年   15篇
  1985年   9篇
  1983年   11篇
  1982年   13篇
  1981年   13篇
  1980年   9篇
  1979年   14篇
  1978年   9篇
  1976年   10篇
  1974年   4篇
  1973年   9篇
  1972年   5篇
  1971年   8篇
  1970年   8篇
  1968年   4篇
排序方式: 共有1050条查询结果,搜索用时 15 毫秒
991.
992.
Philosophers tend to assume that theoretical frameworks in psychology suffer from conceptual confusion and that any influence that philosophy might have on psychology should be positive. Going against this grain, Dan Lapsley and Darcia Narváez attribute the Kohlbergian paradigm's current state of marginalization within psychology to Lawrence Kohlberg's use of ethical theory in his model of cognitive moral development. Post‐Kohlbergian conceptions of moral psychology, they advance, should be wary of theoretical constructs derived from folk morality, refuse philosophical starting points, and seek integration with literatures in psychology, not philosophy. In this essay, Bruce Maxwell considers and rejects Lapsley and Narváez's diagnosis. The Kohlbergian paradigm's restricted conception of the moral domain is the result of a selective reading of one tendency in ethical theorizing (Kantianism). The idea that moral psychology may find shelter from normative criticism by avoiding ethics‐derived models overlooks the deeper continuity between “ethical theory” and “psychological theory.”
相似文献   
993.
This study investigated the impact of managers' educational levels on productivity in the commercial poultry industry in Ghana. The level of education of 33 production managers of the poultry farms were factored into a Cobb‐Douglas production function with other explanatory variables. The computed percentage change in productivity due to higher education relative to secondary education was 10%. The interaction terms of basic education, experience, and extension visits were positive and not statistically significant. Targeting management education could increase productivity in the commercial poultry industry. Educated managers have a higher propensity to adopt technology and alternative production mix for effectiveness and efficiency. This study concludes that higher educational level had a positive impact on productivity in the commercial poultry industry and should be harnessed for improved performance in the domestic and global market.  相似文献   
994.
During student-centered learning, the individual assumes responsibility for determining learning goals, monitoring progress toward meeting goals, adjusting or adapting approaches as warranted, and determining when individual goals have been adequately addressed. This can be particularly challenging while learning from the World-Wide Web, where billions of resources address a variety of needs. The individual must identify which tools and resources are available and appropriate, how to assemble them, and how to manage and support their unique learning goals. We analyze the applicability of cognitive principles to learning from Web-based multimedia, review and critically analyze issues related to cognition and student-centered learning from Web-based multimedia, and describe implications for design research and practice.  相似文献   
995.
This study investigated the phonological processing skills of 29 children with prelingual, profound hearing loss with 4 years of cochlear implant experience. Results were group matched with regard to word-reading ability and mother's educational level with the performance of 29 hearing children. Results revealed that it is possible to obtain a valid measure of phonological processing (PP) skills in children using CIs. They could complete rhyming tasks and were able to complete sound-based tasks using standard test materials provided by a commercial test distributor. The CI children completed tasks measuring PP, but there were performance differences between the CI users and the hearing children. The process of learning phonological awareness (PA) for the children with CIs was characterized by a longer, more protracted learning phase than their counterparts with hearing. Tests of phonological memory skills indicated that when the tasks were controlled for presentation method and response modality, there were no differences between the performance of children with CIs and their counterparts with hearing. Tests of rapid naming revealed that there were no differences between rapid letter and number naming between the two groups. Results yielded a possible PP test battery for children with CI experience.  相似文献   
996.
This case study describes an evaluation of business impact and return on investment (ROI) for the Knowledge Exchange, a knowledge management (KM) system within Accenture. The evaluation used a continuous measurement design to allow impact and ROI to be tracked across time and groups. The results demonstrated a significant positive impact on productivity, based largely on the effect on time savings realized by leveraging a useful KM system across a large population of employees.  相似文献   
997.
The purpose of this study was to examine students’ psychosocial perceptions of their science classroom learning environment in order to identify exemplary teachers. This mixed-method study used the valid and reliable What Is Happening In this Class? (WIHIC) questionnaire with over 3,000 middle school students in 150 classrooms in Australia. Exemplary teachers were defined as those whose students’ perceptions were more than one standard deviation above the mean for three of the five scales of Student Cohesiveness, Teacher Support, Involvement, Task Orientation and Equity. The reliability of the WIHIC scales ranged from 0.75 to 0.87. Eta2 showed that the WIHIC was able to distinguish between the perceptions of the students in the classroom. The construct validity of the WIHIC for identifying these exemplary teachers was confirmed through interviews with students and these views are reported in the article.  相似文献   
998.
In this paper, we propose a new term dependence model for information retrieval, which is based on a theoretical framework using Markov random fields. We assume two types of dependencies of terms given in a query: (i) long-range dependencies that may appear for instance within a passage or a sentence in a target document, and (ii) short-range dependencies that may appear for instance within a compound word in a target document. Based on this assumption, our two-stage term dependence model captures both long-range and short-range term dependencies differently, when more than one compound word appear in a query. We also investigate how query structuring with term dependence can improve the performance of query expansion using a relevance model. The relevance model is constructed using the retrieval results of the structured query with term dependence to expand the query. We show that our term dependence model works well, particularly when using query structuring with compound words, through experiments using a 100-gigabyte test collection of web documents mostly written in Japanese. We also show that the performance of the relevance model can be significantly improved by using the structured query with our term dependence model.
Koji EguchiEmail:
  相似文献   
999.
1000.
In this paper, a new novelty detection approach based on the identification of sentence level information patterns is proposed. First, “novelty” is redefined based on the proposed information patterns, and several different types of information patterns are given corresponding to different types of users’ information needs. Second, a thorough analysis of sentence level information patterns is elaborated using data from the TREC novelty tracks, including sentence lengths, named entities (NEs), and sentence level opinion patterns. Finally, a unified information-pattern-based approach to novelty detection (ip-BAND) is presented for both specific NE topics and more general topics. Experiments on novelty detection on data from the TREC 2002, 2003 and 2004 novelty tracks show that the proposed approach significantly improves the performance of novelty detection in terms of precision at top ranks. Future research directions are suggested.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号