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   16895篇
  免费   10篇
财政金融   2680篇
工业经济   762篇
计划管理   2578篇
经济学   3919篇
综合类   482篇
运输经济   5篇
旅游经济   3篇
贸易经济   4491篇
农业经济   4篇
经济概况   1365篇
信息产业经济   44篇
邮电经济   572篇
  2023年   1篇
  2022年   1篇
  2021年   2篇
  2020年   6篇
  2019年   5篇
  2018年   2309篇
  2017年   2064篇
  2016年   1210篇
  2015年   95篇
  2014年   91篇
  2013年   79篇
  2012年   440篇
  2011年   1949篇
  2010年   1834篇
  2009年   1522篇
  2008年   1520篇
  2007年   1876篇
  2006年   66篇
  2005年   389篇
  2004年   466篇
  2003年   553篇
  2002年   253篇
  2001年   66篇
  2000年   50篇
  1998年   17篇
  1997年   1篇
  1996年   14篇
  1995年   2篇
  1991年   1篇
  1990年   1篇
  1986年   14篇
  1984年   2篇
  1983年   1篇
  1982年   2篇
  1980年   2篇
  1979年   1篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
991.
992.
993.
994.
Over 90 percent of companies are estimated to use IT Service Management (ITSM) frameworks, yet there is little research on their benefits to the Information Technology (IT) department and the business units. An international survey of 491 firms was conducted to assess the benefits of the IT Infrastructure Library (ITIL), the de-facto ITSM framework, specifically on how these benefits evolve as companies increase their adoption of the ITIL model. Also studied are the perception of challenges of the implementation and the number of ITIL processes implemented in relation to the progress of the adoption of ITIL. Results indicate that as the maturity of implementation increases, the perception of challenges decreases. Findings also show that as the maturity of implementation increases, the number of realized benefits increases, as well as the number of implemented ITIL processes. Implications for practitioners and researchers are also discussed.  相似文献   
995.
996.
Empirical Evaluation of Fair Use Flat Rate Strategies for Mobile Internet   总被引:2,自引:1,他引:1  
The fair use flat rate is a promising tariff concept for the mobile telecommunication industry. Similar to classical flat rates it allows unlimited usage at a fixed monthly fee. Contrary to classical flat rates it limits the access speed once a certain usage threshold is exceeded. Due to the current global roll-out of the LTE (Long Term Evolution) technology and the related economic changes for telecommunication providers, the application of fair use flat rates needs a reassessment. We therefore propose a simulation model to evaluate different pricing strategies and their contribution margin impact. The key input element of the model is provided by so-called discrete choice experiments that allow the estimation of customer preferences.  相似文献   
997.
The paper examines the current state of research as regards the eXtensible Business Reporting Language (XBRL) by using the literature review methodology. The results show that an empirical-quantitative research design is used most of the time. The contributions vary in substance in terms of research on XBRL and research with XBRL. Research with XBRL focuses on the development of conceptual XBRL extensions. Work on XBRL considers, for example, the changes in reporting as a result of XBRL as well as the acceptance and enforcement of financial reporting standards. The results point to open issues and are relevant for research and practice.  相似文献   
998.
The Future of Telecommunications   总被引:1,自引:1,他引:0  
  相似文献   
999.
1000.
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