全文获取类型
收费全文 | 18956篇 |
免费 | 135篇 |
国内免费 | 23篇 |
专业分类
财政金融 | 2979篇 |
工业经济 | 858篇 |
计划管理 | 3042篇 |
经济学 | 4458篇 |
综合类 | 498篇 |
运输经济 | 60篇 |
旅游经济 | 78篇 |
贸易经济 | 4966篇 |
农业经济 | 61篇 |
经济概况 | 1495篇 |
信息产业经济 | 44篇 |
邮电经济 | 575篇 |
出版年
2024年 | 2篇 |
2023年 | 41篇 |
2022年 | 33篇 |
2021年 | 53篇 |
2020年 | 102篇 |
2019年 | 131篇 |
2018年 | 2408篇 |
2017年 | 2199篇 |
2016年 | 1339篇 |
2015年 | 179篇 |
2014年 | 212篇 |
2013年 | 490篇 |
2012年 | 576篇 |
2011年 | 2068篇 |
2010年 | 1915篇 |
2009年 | 1614篇 |
2008年 | 1578篇 |
2007年 | 1913篇 |
2006年 | 108篇 |
2005年 | 438篇 |
2004年 | 498篇 |
2003年 | 586篇 |
2002年 | 284篇 |
2001年 | 92篇 |
2000年 | 68篇 |
1999年 | 23篇 |
1998年 | 27篇 |
1997年 | 16篇 |
1996年 | 23篇 |
1995年 | 13篇 |
1994年 | 16篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1991年 | 6篇 |
1989年 | 3篇 |
1986年 | 13篇 |
1985年 | 4篇 |
1984年 | 5篇 |
1983年 | 3篇 |
1982年 | 4篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 1篇 |
1978年 | 3篇 |
1976年 | 4篇 |
1975年 | 2篇 |
1974年 | 1篇 |
1973年 | 1篇 |
1958年 | 1篇 |
1890年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 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.
Marcel Fritz Christian Schlereth Stefan Figge 《Business & Information Systems Engineering》2011,3(5):269-277
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.
André Gräning Carsten Felden Maciej Piechocki 《Business & Information Systems Engineering》2011,3(4):231-239
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
999.
1000.
Dalia H. Eldardiry Zeinab A. Elmoghazy 《International Journal of Technology and Design Education》2018,28(1):287-302
The paper explores the impact of the internet on students and their enhancement of their Identity and culture in the world of globalization. It is based on two stages; a theoretical background in the literature that provides criteria for examining the issue of the study. Then, the analytical study is done to the collected data. The paper incorporates two methods of data collection; a questionnaire survey to measure the instructors’ perception of how students should reflect the identity and local culture in their projects in the internet era, and statistical analysis of students’ implementation of cultural knowledge and identity features in their graduation projects in the new millennium before the usage of internet in the design education in the interval of 2001–2007 and after the usage of internet the interval between 2008 and 2015. Consequently, the paper is designed to generate both statistical quantitative and qualitative data. Despite the apparent impact of Globalization and internet based education on abandoning individual identity, yet it might lead to opening new horizons in front of dealing with cultural identity and heritage with a contemporary vision that integrates with nowadays architecture and at the same time refer to the unique identity. 相似文献