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   245篇
  免费   15篇
财政金融   28篇
工业经济   32篇
计划管理   56篇
经济学   29篇
综合类   8篇
运输经济   7篇
旅游经济   8篇
贸易经济   49篇
农业经济   15篇
经济概况   28篇
  2023年   2篇
  2021年   2篇
  2020年   6篇
  2019年   6篇
  2018年   4篇
  2017年   7篇
  2016年   8篇
  2015年   5篇
  2014年   16篇
  2013年   38篇
  2012年   6篇
  2011年   15篇
  2010年   4篇
  2009年   7篇
  2008年   6篇
  2007年   5篇
  2006年   4篇
  2005年   3篇
  2004年   5篇
  2003年   7篇
  2002年   9篇
  2001年   7篇
  2000年   4篇
  1999年   2篇
  1998年   3篇
  1997年   6篇
  1996年   4篇
  1995年   4篇
  1993年   2篇
  1992年   4篇
  1991年   5篇
  1990年   3篇
  1987年   4篇
  1986年   3篇
  1985年   5篇
  1980年   3篇
  1979年   5篇
  1976年   5篇
  1974年   2篇
  1973年   2篇
  1972年   3篇
  1970年   4篇
  1969年   1篇
  1968年   2篇
  1967年   3篇
  1966年   1篇
  1961年   1篇
  1948年   1篇
  1935年   1篇
  1932年   1篇
排序方式: 共有260条查询结果,搜索用时 78 毫秒
61.
The concentrated ownership of farmland has influenced rural life in the state of California for more than a century. Reformers have introduced measures to counteract that concentration, such as acreage limits on farms receiving water from federally funded projects. Large landowners have fought back with policies that have protected their ability to amass and maintain their empires. In the first part of this article, Mason Gaffney presents this historical background in broad outlines. In the second part, Merrill Goodall explains an important policy that preserves the power of entrenched interests: water districts that are governed by a board elected by a voting system that allots one vote to each dollar of land value. In these districts, a tiny handful of landowners is able to control a public agency without opposition and without the need to persuade other voters.  相似文献   
62.
63.
64.
Cause related marketing links charities to the sales of products, brands, or services. The charity is mentioned in promotional campaigns and a percentage donated to the cause according to unit sales or turnover. This article aims to establish which charities are more popular with South African consumers, and whether different socio-demographic groups (age, gender, income, and education) prefer to support different causes. A quantitative study was conducted in South Africa using a structured questionnaire administered via interviews at shopping malls. Different groups were found to prefer to support considerably different causes and these causes were identified.  相似文献   
65.
66.
Internet pharmaceutical sales continue to skyrocket as healthcare providers and consumers are increasingly relying on the efficiencies and convenience that is available via such transactions. Managed care companies, increasing demands to reduce healthcare inefficiencies while maximizing the quality of patient care is a significant contributing factor to the expanding utilization and success of online pharmaceutical sales. However, with the expansion of Internet pharmaceutical sales, healthcare providers, pharmacy benefit management and insurance companies, and consumers realize new opportunities and risks. This paper will review the attributes and concerns associated with online pharmaceutical sales, discussing current and pending legislation intended to more effectively manage these parameters.  相似文献   
67.
ABSTRACT

Skills are widely recognised as central to absorptive capacity, that is, firms’ ability to identify and make effective use of knowledge, ideas and technologies that are generated elsewhere. But identification of the specific levels of education and skills that contribute most to the development of absorptive capacity is often hampered by the use of skill measures as proxies for absorptive capacity itself. Drawing on a cross-country industry-level dataset, we retain separate measures of key components of absorptive capacity, namely, skills, R&D investments and openness to foreign trade and investment. We then estimate a system of structural equations in order to evaluate the extent to which different levels of skill contribute to innovative output (measured by growth in patenting) and subsequently to growth in productivity. We find important roles for both high-level skills and upper intermediate (technician-level) skills in converting the knowledge sourcing opportunities provided by openness into innovative output. In final stages of production (making use of innovative output), productivity growth in countries near to the technological frontier is enhanced not just by high-level and upper intermediate skills but also by the skills of the workforce as a whole.  相似文献   
68.
We examine the impact of firm-specific investor sentiment (FSIS) on stock returns for negative and positive earnings surprises. Using a measure constructed from firm-specific tweets, we find that FSIS has a greater impact on stock returns for negative relative to positive earnings surprises. We further show that the impact of FSIS is greater for firms whose valuation is uncertain and difficult to arbitrage. Moreover, we provide evidence of return reversals over post-announcement periods. Our results highlight the importance of FSIS around earnings announcements.  相似文献   
69.
This paper provides a characterization of the set of dynamic models in which symmetric duopolists have incentives to raise a common cost. The advantage of the dynamic analysis over existing static models is that it extends the conditions (restrictive in static models) under which symmetric cost raising is profitable. The model is illustrated by standard examples from industrial organization: quantity and price adjustment, and learning–by–doing.  相似文献   
70.
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