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   15944篇
  免费   325篇
财政金融   2900篇
工业经济   1127篇
计划管理   2691篇
经济学   3427篇
综合类   136篇
运输经济   145篇
旅游经济   307篇
贸易经济   2478篇
农业经济   820篇
经济概况   2194篇
信息产业经济   2篇
邮电经济   42篇
  2020年   163篇
  2019年   268篇
  2018年   345篇
  2017年   340篇
  2016年   332篇
  2015年   210篇
  2014年   352篇
  2013年   1516篇
  2012年   457篇
  2011年   475篇
  2010年   408篇
  2009年   472篇
  2008年   477篇
  2007年   397篇
  2006年   387篇
  2005年   323篇
  2004年   352篇
  2003年   345篇
  2002年   342篇
  2001年   299篇
  2000年   350篇
  1999年   295篇
  1998年   285篇
  1997年   263篇
  1996年   270篇
  1995年   259篇
  1994年   248篇
  1993年   231篇
  1992年   254篇
  1991年   251篇
  1990年   255篇
  1989年   217篇
  1988年   172篇
  1987年   186篇
  1986年   206篇
  1985年   312篇
  1984年   265篇
  1983年   232篇
  1982年   255篇
  1981年   228篇
  1980年   228篇
  1979年   219篇
  1978年   193篇
  1977年   171篇
  1976年   169篇
  1975年   166篇
  1974年   133篇
  1973年   129篇
  1972年   108篇
  1971年   91篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
61.
Determinants of internal and external R&D: Some Dutch evidence   总被引:1,自引:0,他引:1  
Summary Innovating firms can choose to engage in either internal or external R&D, or in both. In the current study, we shall examine internal and external R&D separately to determine empirically the market structure characteristics explaining the external R&D share and the differences in market structure determinants between internal and external R&D. Our results indicate that a government policy that aims at stimulating technological progress by offering external research facilities is particularly interesting for smaller, capital-intensive firms operating in less concentrated markets.We would like to thank Alfred Kleinknecht for providing the R&D data and Kees Bakker and Yvonne Prince for providing the market structure data. We thank Alfred Kleinknecht, Bart Nooteboom and an anonymous referee for their comments and suggestions We acknowledge a research grant from the Stichting KMO Fonds.  相似文献   
62.
Browning G 《National journal》1993,25(34-35):2083-2086
Critics within and outside the National Institutes of Health say that NIH's central administration is hostile and defensive and needs to be shaken up. They hope a new director will do just that.  相似文献   
63.
64.
65.
Book Reviews     
Rashid Amjad (ed.), The Development of Labour Intensive Industry in ASEAN Countries, Geneva: Asian Employment Programme, International Labour Office, 1981, pp. v + 337. US$10.00.

G. J. Viksnins, Financial Deepening in ASEAN Countries, Pacific Forum. University of Hawaii Press, 1980, pp. ix + 76.

C. Sosya, L-S. Chia, W. L. Collier (eds). Man, Land and Sea, Bangkok: Agricultural Development Council, 1982, pp. ix + 320.

Joachim K. Metzner, Agriculture and Population Pressure in Sikka, Isle of Flores, (A contribution to the study of the stability of agricultural systems in the wet and dry tropics). Development Studies Centre Monograph No. 28. Canberra: Australian National University Press, 1982, pp. xxxii + 355. $A15.00.

Dwight Y. King, Interest Groups and Political Linkages in Indonesia 1800–1965. DeKalb: Northern Illinois University, Center for Southeast Asian Studies Special Report No. 20, pp. vii + 192, index.

Improving Access to Indonesian Collections in the Netherlands, Leiden: Intercontinenta No. 2, 1981, pp. 78. Dlf. l4.75.  相似文献   

66.
Conclusions Unlike McKenzie and Tullock, we do not know how personsshould treat their bodily organs or what is an ideal exit. That depends upon their utility goals, which are defined in output terms specific to the decision maker. We contend that the body is an input into the utility production process, and therefore, as with any input, it must be maintained and repaired at a level consistent with the output goals for maximization of utility. Thus, from this framework, it is quite consistent for a person to die with healthy organs without any thought of belief in reincarnation or the desire to bequeath one's bodily organs to others, or religious values. Self interest is all that must prevail.Also, the fact that there are interrelationships between the organs in the system, and at points these relationships take on fixed factor characteristics such that reduced levels of operation in one organ can create disorientation or coma or damage to other organs, means that the body cannot die as M-T suggest. Zero capacity for all organs at death is a technical impossibility as well as being inconsistent with the output goals of utility maximizers.  相似文献   
67.
68.
Valuation of SGARAs IN THE Wine Industry: Time for Sober Reflection   总被引:1,自引:0,他引:1  
The application of AASB 1037 Self Generating and Regenerating Assets provides little guidance to the commercial performance of winemakers. The valuation of grapevines essentially requires the valuation of a segment of a business (vineyards), from which is deducted the value of associated infrastructure. Grapevines are reported at a fictional "net market value" even though they cannot be bought or sold. The combination of recognising revaluation increments as distributable profits through the valuation of grapevines at "net market value", and the subsequent "amortisation" of those revaluation increments over the useful lives of the grapevines, creates a reporting maze which is more likely to confuse than inform.  相似文献   
69.
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