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   105篇
  免费   2篇
财政金融   16篇
工业经济   18篇
计划管理   12篇
经济学   13篇
综合类   4篇
运输经济   2篇
旅游经济   4篇
贸易经济   25篇
农业经济   5篇
经济概况   8篇
  2023年   1篇
  2021年   1篇
  2020年   1篇
  2019年   3篇
  2018年   3篇
  2017年   5篇
  2016年   2篇
  2015年   1篇
  2014年   1篇
  2013年   19篇
  2012年   1篇
  2011年   2篇
  2010年   1篇
  2009年   5篇
  2008年   8篇
  2007年   3篇
  2006年   4篇
  2004年   3篇
  2003年   3篇
  2001年   5篇
  2000年   4篇
  1999年   1篇
  1998年   6篇
  1996年   2篇
  1995年   2篇
  1994年   2篇
  1992年   2篇
  1990年   1篇
  1986年   1篇
  1985年   3篇
  1982年   1篇
  1981年   1篇
  1980年   2篇
  1977年   2篇
  1975年   1篇
  1957年   1篇
  1937年   1篇
  1936年   1篇
  1934年   1篇
排序方式: 共有107条查询结果,搜索用时 0 毫秒
101.
智能技术在短时间里在能源与公共事业领域取得显著优势是不争的事实.一个没有智能表计、智能电网和智能家庭解决方案的未来几乎不可想象.然而,公共事业公司在成功部署和运营智能电网的过程中,要面对很多挑战.智能电网部署不是具体的一个项目或计划,它实际上是一次业务转型,会从根本上改变公共事业公司生成数据、提供信息、制定决策、开展工作和与客户沟通的方式.了解智能电网幕后不容忽视的关键问题,是减少智能电网部署障碍的关键所在.成功部署智能电网有五大要素.  相似文献   
102.
103.
This study examines the content of professional, semi-professional, and user-generated reviews. By comparing these three review types, this study was able to identify characteristics and factors unique to each type of review. Although, the amount of discourse in a particular factor varied, food is clearly the most important review factor regardless of review type. Semi-professional reviews emphasize atmosphere and décor more than both newspaper and user-generated reviews, while price factors were more prevalent in semi-professional reviews and user-generated reviews than in newspaper reviews. Understanding the varied structures of review types provides guidance for both restaurateurs and review users.  相似文献   
104.
This paper argues the case that tests of how investors value corporate social performance (CSP) based upon realised stock market returns are liable to be weak tests if markets are efficient and firms change CSP policies infrequently. We provide a theoretical explanation of why this will be the case using examples to illustrate. Subsequently, we set out an alternative theoretical framework for the purposes of investigating whether markets place a positive, or a negative, valuation on CSP, and show why this is superior to tests based upon Tobin’s Q. Using US KLD data, we demonstrate that, as theorised, markets place a positive value on CSP that is not detected by conventional returns-based tests. Our conclusion is that researchers who are interested in the question of whether engagement with a corporate social responsibility agenda is a value-enhancing activity for a company (as argued by some stakeholder theorists) or value destructive (as argued by Friedman, The social responsibility of business is to increase its profits, The New York Times Magazine, 1970), need to look beyond returns-based tests to answer the research question posed.  相似文献   
105.
106.
The Maryland Water Quality Improvement Act of 1998 (WQIA) seeks to create environmental and other benefits to the Chesapeake Bay through reductions in nonpoint source nutrient pollution. This paper analyzes the economic impacts of the WQIA on agricultural users of nutrients (commercial fertilizers or animal manures) and on poultry growers in the state of Maryland. The net economic impacts to each of these groups are estimated along with some discussion of the distribution of the impacts. Recognition of the distribution of the impacts allows for the assessment of potential policies to address negative impacts. Additional sections of the WQIA are discussed in terms of their ability to shift the distribution of the impacts or to provide partial compensation to those most affected. The WQIA is the most restrictive agricultural nonpoint pollution control law in the US. While the WQIA only regulates nutrient use in the state of Maryland, other states, as well as the federal government, are watching how this law is implemented. Many states are considering similar laws. At the national level, the United States Department of Agriculture and the United States Environmental Protection Agency have issued draft guidelines that will control nutrients from animal operations in much the same way as the WQIA. Therefore, analyses of the economic impacts of the WQIA may be important in shaping policies in other states and at the national level.  相似文献   
107.
The detection of deception is a promising but challenging task. A systematic discussion of automated Linguistics Based Cues (LBC) to deception has rarely been touched before. The experiment studied the effectiveness of automated LBC in the context of text-based asynchronous computer mediated communication (TA-CMC). Twenty-seven cues either extracted from the prior research or created for this study were clustered into nine linguistics constructs: quantity, diversity, complexity, specificity, expressivity, informality, affect, uncertainty, and nonimmediacy. A test of the selected LBC in a simulated TA-CMC experiment showed that: (1) a systematic analysis of linguistic information could be useful in the detection of deception; (2) some existing LBC were effective as expected, while some others turned out in the opposite direction to the prediction of the prior research; and (3) some newly discovered linguistic constructs and their component LBC were helpful in differentiating deception from truth.  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