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   1022篇
  免费   22篇
财政金融   207篇
工业经济   74篇
计划管理   186篇
经济学   244篇
综合类   1篇
运输经济   5篇
旅游经济   11篇
贸易经济   202篇
农业经济   20篇
经济概况   73篇
邮电经济   21篇
  2023年   8篇
  2020年   14篇
  2019年   20篇
  2018年   25篇
  2017年   15篇
  2016年   28篇
  2015年   20篇
  2014年   23篇
  2013年   90篇
  2012年   27篇
  2011年   32篇
  2010年   40篇
  2009年   45篇
  2008年   46篇
  2007年   23篇
  2006年   16篇
  2005年   25篇
  2004年   27篇
  2003年   24篇
  2002年   29篇
  2001年   16篇
  2000年   26篇
  1999年   17篇
  1998年   19篇
  1997年   12篇
  1996年   16篇
  1995年   16篇
  1994年   12篇
  1993年   17篇
  1992年   10篇
  1991年   11篇
  1990年   15篇
  1988年   11篇
  1987年   8篇
  1986年   8篇
  1985年   23篇
  1984年   16篇
  1983年   16篇
  1982年   13篇
  1981年   18篇
  1980年   12篇
  1979年   7篇
  1978年   11篇
  1977年   10篇
  1976年   11篇
  1975年   13篇
  1974年   16篇
  1973年   10篇
  1970年   8篇
  1967年   10篇
排序方式: 共有1044条查询结果,搜索用时 0 毫秒
71.
72.
Since the Earth Summit in Rio de Janeiro 1992 the term sustainable development determines the third and current phase of environmental policy. A precise and commonly accepted definition of sustainable development (s.d.) is still missing. There are, nevertheless, some elements in the philosophy of sustainable development which–even if they are still vague–could be used as guidelines for a framework of green accounting and sustainability indicators. Based on theoretical considerations, the German Federal Statistical Office has developed a framework for an Environmental Economic Accounting System. The objective is to add meaningful modules to the traditional System of National Accounts which are designed to quantify the external (environmental) effects of economic activities. The framework could already be realised and published to an extent that is relevant for actual policy making in Germany.  相似文献   
73.
The research objectives were to understand better the motives of youth development volunteers, determine if youth development volunteers could be differentiated from other volunteers using determinant variables from multiple conceptual domains and to discover correlates that may predict more intensive volunteering involvement. Social-lifestyle, demographic, personality and terminal value measures were obtained from a sample of 164 youth development volunteers and 849 volunteers serving in other organisations. Survey respondents were derived from over 40 nonprofit organisations in two mid-western US cities. Results, managerial implications and recommendations for future research are presented.  相似文献   
74.
75.
76.
Abstract

Unintentional injuries ('accidents’) among elderly people are a significant burden in public health because such accidents happen frequently and because the proportion of older age groups in the population will continue to rise during the coming decades. One aim of this study, which was done in Vienna, the capital of Austria, was to broaden the preventive concept, adding lifestyle and living conditions to already well-known risk factors following the health promotion approach. Furthermore, characteristics that predispose older residents to accidents should be identified in order to design preventive measures for reducing injuries in this age group.

809 interviews with people 60 years of age and over were conducted, concerning accidents, outcomes of accidents, physical fitness, drug intake, type of house or dwelling, equipment in the household incorporating safety features, psychological well-being and social relations. The information collected was used to draw cross-sectional comparisons between participants who reported having experienced at least one accident in the previous 12 months and those who did not. Furthermore, the accident incidents were classified into 2 groups: incidents without injuries and injurious accidents. The latter served as a base for the epidemiology of injuries for people 60 years of age and over within the Vienna community.

20% of all senior citizens suffer at least one unintentional injury every year, in addition to which 8% experience critical incidents (mostly falls) without injury. Most accidents occur at home or involve pedestrians in public traffic areas. Over 90% of all accidents are falls, and 20% result in fractures. The most important risk factors for accidents in the elderly are gender, increasing age, poor physical fitness and low physical activity, the type of household and household equipment, poor psychological well-being, low income and loneliness.

The findings regarding falls suggest some possible opportunities for reducing the risk of falls by improving buildings and dwellings of the elderly. A promising attempt at practical implementation of these findings is being conducted by the Vienna-based Austrian Institute for Home and Leisure Safety in cooperation with the Vienna City Council. These two organizations are implementing a long-term program that aims at mobilizing institutions and organizations involved in working with the elderly.  相似文献   
77.
Usury, charging a higher interest rate than thought by some to be “fair,” has had and still has, a bad press. Historically, it was heavily punished. It was then, and all too often is now, thought to be exploitative. Yet, as even the most economically unsophisticated must realize, both sides of these transactions must necessarily gain at least in the ex ante sense, otherwise one or the other would refuse to enter into the deal in the first place. The present paper is an attempt to justify the practice of charging interest on loans, at any rate agreeable to both borrowers and lenders.  相似文献   
78.
Despite all the talk of a New Economy and the revolutionary import of the Internet, this article suggests that there is nothing really new under the sun. When Christopher Columbus was building the ships for his expeditions to the East Indies, only the vaguest estimates could be made of their potential value. At this stage, nobody knew if Columbus would be able to manage the crossing, when the ships would return, and what cargo they would eventually carry. In this sense, Columbus's venture bears a striking resemblance to many of today's Internet stocks. This paper raises and attempts to answer a number of interesting questions. For example, how do risky ventures with very high fixed (startup) costs but very low expected variable costs raise the capital necessary to fund the fixed costs? What role should government (and, in particular, monetary) policy play in encouraging (or discouraging) funding for such ventures? And how does one establish the value of such ventures when there is little or no revenue and, in some cases, no clearly defined product? The answer to the first question is investor enthusiasm–or, in Alan Greenspan's terms, “irrational exuberance.” Irrational exuberance plays a very important economic role in giving entrepreneurs access to the cheap financing necessary to fund ventures with heavy startup costs. Indeed, “irrational exuberance” may be the best solution for financing large fixed costs, not only because it is a private (as opposed to a government‐financed) solution, but because it gives investors direct access to the risks and rewards of promising investment opportunities. Before the recent “democratization” of capital markets, such ventures would have been funded by large corporations if not government agencies. As for the third question, this paper suggests there is only one useful way to estimate the value of ventures without revenues or products. The author provides a back‐of‐the‐envelope, “Fermitype” valuation method that is based on the principle of “human capital arbitrage.” For those Internet startups that lure top executives away from established firms with large grants of stock options but relatively low salaries, there is a “breakeven level” for the future stock price that can be calculated using a fairly modest amount of information about the executive's past and current compensation plans. For outside investors, such movements of human capital provide what is perhaps the most reliable basis for estimating the value of the firm.  相似文献   
79.
80.
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