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   447篇
  免费   7篇
  国内免费   24篇
教育   187篇
科学研究   170篇
体育   13篇
综合类   11篇
文化理论   3篇
信息传播   94篇
  2023年   2篇
  2022年   5篇
  2021年   9篇
  2020年   15篇
  2019年   15篇
  2018年   16篇
  2017年   8篇
  2016年   9篇
  2015年   18篇
  2014年   31篇
  2013年   44篇
  2012年   36篇
  2011年   45篇
  2010年   20篇
  2009年   22篇
  2008年   24篇
  2007年   23篇
  2006年   31篇
  2005年   13篇
  2004年   19篇
  2003年   18篇
  2002年   15篇
  2001年   8篇
  2000年   9篇
  1999年   7篇
  1998年   4篇
  1997年   3篇
  1996年   3篇
  1995年   1篇
  1993年   1篇
  1989年   2篇
  1987年   1篇
  1985年   1篇
排序方式: 共有478条查询结果,搜索用时 125 毫秒
1.
目前Web图书馆电子资源传统访问方式存在着缺陷.对读者认证信息的单点登录模型进行了研究,提出并验证了Web环境下的联合SSO模型.该模型利用用户首次的登录信息,将其在分布式Web图书馆站点之间进行传递,从而在整个数字图书馆联盟内实现"一次登录,多站点访问".  相似文献   
2.
This study focused on a cohousing community's use of consensus to make a decision about surfacing a parking area. It revealed that the community's use of consensus decision making allowed the residents to balance three goals: making an appropriate decision, meeting members' needs, and maintaining the community's well-being. Reaching agreement, however, was complicated by members' value differences and discontinuity in their participation. The analysis of this case reveals three qualities characteristic of the enactment of consensus: the role of structured communication within and between group meetings, a tension between maintaining process openness and reaching decision closure, and the expectation that group members will work within the consensus process. The analysis also highlights the importance of timing in the interpretation of conflict in a consensus-oriented group and the role of process change when a group reaches the limits of members' commitment to consensus.  相似文献   
3.
4.
The relationships between team performance indicators and match outcome have been examined in many team sports, however are limited in Australian Rules football. Using data from the 2013 and 2014 Australian Football League (AFL) regular seasons, this study assessed the ability of commonly reported discrete team performance indicators presented in their relative form (standardised against their opposition for a given match) to explain match outcome (Win/Loss). Logistic regression and decision tree (chi-squared automatic interaction detection (CHAID)) analyses both revealed relative differences between opposing teams for “kicks” and “goal conversion” as the most influential in explaining match outcome, with two models achieving 88.3% and 89.8% classification accuracies, respectively. Models incorporating a smaller performance indicator set displayed a slightly reduced ability to explain match outcome (81.0% and 81.5% for logistic regression and CHAID, respectively). However, both were fit to 2014 data with reduced error in comparison to the full models. Despite performance similarities across the two analysis approaches, the CHAID model revealed multiple winning performance indicator profiles, thereby increasing its comparative feasibility for use in the field. Coaches and analysts may find these results useful in informing strategy and game plan development in Australian Rules football, with the development of team-specific models recommended in future.  相似文献   
5.
6.
Since accurate decisions are required for effective management, much research has focused on information systems that support decision making. Recently, this research has engendered frameworks, such as the management support system (MSS), that are designed to provide comprehensive and integrated support for the decision making process. Few, if any, studies have empirically measured the effects of these frameworks on decision making. This article offers empirical evidence on MSS effectiveness. It overviews the decision making process, presents an MSS for supporting the process, and assesses the influences of the MSS on the process and outcomes of health care decision making. The paper also examines the implications of the analyses for information systems research and health care practice.  相似文献   
7.
首先分析了应用模糊综合评价法的可行性,然后利用模糊综合评价方法对高校内部审计风险进行评价,并予以实例详细说明,以达到有效控制内部审计风险的目的。  相似文献   
8.
校补《古文字诂林》中所收侯马盟书部分的内容主要有:(1)补充字头下漏收了的《侯马盟书.字表》中1997年底前已被正确考释出的字。(2)补充正文中漏收了的1997年底前的重要的研究成果。原因主要是:(1)受工具书的影响。过分信任工具书《侯马盟书.字表》等,导致漏收了已被正确考释出的字。(2)工作量大、手工操作,检索、查看不便,导致了漏收学术界重要的研究成果。  相似文献   
9.
王琴竹 《运城学院学报》2011,29(2):53-54,57
决策树算法广泛应用于模式识别和机器学习等领域,用来解决与分类相关的问题。决策树算法中的过度拟合会在很大程度上影响到最终的分类结果。针对过度拟合产生的原因,采用悲观错误剪枝方法,对学生成绩决策数据进行分析,得出影响学生成绩的重要因素。实验表明,该方法可以得到尽可能短的分类规则,有效地提高了决策树的性能。  相似文献   
10.
分析了分类规则挖掘方法中决策树的原理,提出了ID3算法的改进算法,并将优化改进后的算法应用到营销决策支持系统中。  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