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   202篇
  免费   1篇
财政金融   10篇
工业经济   9篇
计划管理   55篇
经济学   61篇
旅游经济   3篇
贸易经济   28篇
农业经济   5篇
经济概况   32篇
  2024年   2篇
  2021年   4篇
  2020年   6篇
  2019年   6篇
  2018年   6篇
  2017年   3篇
  2016年   7篇
  2015年   2篇
  2014年   7篇
  2013年   17篇
  2012年   4篇
  2011年   14篇
  2010年   7篇
  2009年   12篇
  2008年   13篇
  2007年   7篇
  2006年   5篇
  2005年   6篇
  2004年   4篇
  2003年   6篇
  2002年   2篇
  2001年   5篇
  1998年   3篇
  1997年   4篇
  1995年   2篇
  1991年   2篇
  1990年   2篇
  1989年   1篇
  1988年   1篇
  1987年   1篇
  1986年   1篇
  1985年   2篇
  1984年   3篇
  1983年   1篇
  1982年   1篇
  1981年   1篇
  1979年   2篇
  1976年   1篇
  1975年   2篇
  1973年   3篇
  1972年   7篇
  1971年   3篇
  1970年   3篇
  1969年   1篇
  1964年   1篇
  1961年   1篇
  1944年   1篇
  1941年   1篇
  1927年   1篇
  1906年   1篇
排序方式: 共有203条查询结果,搜索用时 0 毫秒
191.
192.
193.
194.
195.
    
Literature reviews summarize existing literature, uncover research gaps, and offer future research directions, thus aiding in theoretical and methodological development. Informetric research including bibliometric, scientometric, webometric, cybermetric, patentometric, and altmetric methods are becoming increasingly prevalent in conducting literature review studies. Looking at the common informetric literature review methods—citation, co-citation, co-author, bibliographic coupling, and content co-occurrence analyses, this study aims to serve as a guide in using content co-occurrence also known as co-word analysis to conduct literature reviews. This study outlines a variety of informetric research methods and how they are utilized to conduct review and evidence-based conceptual studies. In addition to the analyses, the study highlights different informetric software packages like Bibliometrix, Biblioshiny, Leximancer, NVivo, and CiteSpace including their comparison. The study further discusses contributions of algorithm-based content analyses including offering taxonomies, definitions, classifications, typologies, comparisons, and theoretical development to constitute integrative literature reviews. Finally, this study offers step-by-step guidelines for conducting a review study using VOSviewer content co-occurrence analysis while providing a systems view of informetric research in social science. The study also notes the emergence of generative artificial intelligence (AI) like Open AI's ChatGPT, Google's Bard, Elicit, Scite, Research Rabbit, and ChatPDF among others, and its potential in contributing to the literature review methods and, as such, being an interesting direction for future research.  相似文献   
196.
    
Review of World Economics - This study presents estimates of the magnitude of carbon leakage as a consequence of emission reduction commitments under the Kyoto Protocol using gravity model-style...  相似文献   
197.
198.
The collection of water for domestic use In rural areas is a critical problem throughout the underdeveloped world. Traditional surface water sources are often far from the household, provide poor quality water and are susceptible to the effects of drought or dry periods. Village water supply schemes that have been implemented in KwaZulu and Transkei are evaluated according to their ability to provide an adequate and reliable supply of good quality water and reduce the burden of water collection. It is concluded that the inadequacy and unreliability of handpump schemes in KwaZulu, and the unreliability of windpump schemes in Transkei is due to inappropriate technology choices and the failure of water supply planners in these areas to address the community context of water supply schemes. The community considerations that must be taken into account include the establishment of communication links between villages and administrative services, the water needs of the community and the provision of village level servicing and maintenance facilities for appropriate water supply technologies.  相似文献   
199.
Staatslexikon     
Ohne Zusammenfassung
Staatslexikon
  相似文献   
200.
  总被引:2,自引:0,他引:2  
The distribution of welfare gains of genetic improvements in major US crops is estimated using a world agricultural trade model. Multi-market welfare estimates were 75% larger than estimates based on the price-exogenous 'change in revenue' method frequently used by plant breeders. Annual benefits of these genetic improvements range from US$ 400–600 million depending on the supply shift specification. Of this, 44–60% accrues to the US, 24–34% accrues to other developed countries. Developing and transitional economies capture 16–22% of the welfare gain. The global benefits of a one-time permanent increase in US yields are US$ 8.1 billion (discounted at 10%) and US$ 15.4 billion (discounted at 5%). Gains to consumers in developing and transitional economies range from US$ 6.1 billion (10% discount rate) to US$ 11.6 billion (5% discount rate).  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