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   29713篇
  免费   364篇
  国内免费   1篇
财政金融   5031篇
工业经济   1771篇
计划管理   4810篇
经济学   6726篇
综合类   709篇
运输经济   96篇
旅游经济   250篇
贸易经济   6508篇
农业经济   493篇
经济概况   3040篇
信息产业经济   46篇
邮电经济   598篇
  2023年   71篇
  2020年   153篇
  2019年   218篇
  2018年   2602篇
  2017年   2405篇
  2016年   1523篇
  2015年   277篇
  2014年   372篇
  2013年   1333篇
  2012年   818篇
  2011年   2353篇
  2010年   2162篇
  2009年   1894篇
  2008年   1907篇
  2007年   2211篇
  2006年   361篇
  2005年   638篇
  2004年   768篇
  2003年   882篇
  2002年   498篇
  2001年   338篇
  2000年   344篇
  1999年   247篇
  1998年   263篇
  1997年   276篇
  1996年   248篇
  1995年   249篇
  1994年   216篇
  1993年   204篇
  1992年   231篇
  1991年   234篇
  1990年   195篇
  1989年   185篇
  1988年   150篇
  1987年   151篇
  1986年   171篇
  1985年   229篇
  1984年   192篇
  1983年   201篇
  1982年   189篇
  1981年   194篇
  1980年   171篇
  1979年   187篇
  1978年   158篇
  1977年   137篇
  1976年   142篇
  1975年   118篇
  1974年   114篇
  1973年   98篇
  1972年   65篇
排序方式: 共有10000条查询结果,搜索用时 218 毫秒
71.
In this article the impact of technology education, as a new learning area (subject) in the curriculum, on in-service teacher education in South Africa is described in order to ascertain the extent of the impact. The research on which this article is based draws on a variety of experiences and observations in the field at grassroots level (in particular an outreach project in rural communities). The envisaged impact of technology education on South African schools, communities, teacher educators and teachers, the range of in-service teacher education that is required, and the impacts in urban and rural areas are discussed. Finally a number of concluding remarks are made about the extent of the impact of the inclusion of technology education in the new National Curriculum Statement and whether the situation has changed since the implementation of a pilot technology education project in 1998. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
72.
The introduction of traffic management schemes has been one response of the National Parks to the problem of ever-increasing car-borne visitors and the consequent damage caused to the rural environment. By reviewing these schemes and by determining and explaining attitudes towards one particular traffic management experiment, the paper aims to deduce lessons for future policy. The analysis, based on two visitor surveys, suggests that the likelihood of success is improved when schemes are integrated, containing both ‘carrot’ and ‘stick’ elements. Since public perceptions are also found to be pivotal to its success, appropriate marketing of a scheme is vital. The paper concludes, however, that to achieve the fundamental objective of greater accessibility with less mobility, a more wide-ranging marketing effort is required intended to engender a sea change in attitude towards both the car and public transport.  相似文献   
73.
74.
75.
The number of firms using alliances as part of their corporate venturing or market entry strategies has surged over the past decade. Three common reasons cited for pursuing alliances are technology convergence, market access and alliance partners' complementary resources. This paper contrasts the alliance strategies of HP and IBM, two major competitors in electronic services (i.e. Internet-based 'e- service') businesses, using the Familiarity Matrix as a display tool to portray the strategies. Whereas the HP strategy is to attempt to establish its technology infrastructure as the standard e-services infrastructure on the Internet, IBM aims to position its IBM Global Services, rather than its technology, at the center of this ecosystem.  相似文献   
76.
Water and Economic Growth   总被引:1,自引:0,他引:1  
Several hydrological studies forecast a global problem of water scarcity. This raises the question as to whether increasing water scarcity may impose constraints on the growth of countries. The influence of water utilisation on economic growth is depicted through a growth model that includes this congestible nonexcludable good as a productive input for private producers. Growth is negatively affected by the government's appropriation of output to supply water but positively influenced by the contribution of increased water use to capital productivity, leading to an inverted-U relationship between economic growth and the rate of water utilisation. Cross-country estimations confirm this relationship and suggest that for most economies current rates of fresh water utilisation are not yet constraining growth. However, for a handful of countries, moderate or extreme water scarcity may adversely affect economic growth. Nevertheless, even for water-scarce countries, there appears to be little evidence that there are severe diminishing returns to allocating more output to provide water, thus resulting in falling income per capita. These results suggest caution over the claims of some hydrological-based studies of a widespread global 'water crisis'.  相似文献   
77.
This article first outlines the dynamics of what appear to be increasingly prevalent cycles of asset price inflation in liberalised financial systems, as well as the difficulties entailed in successful monetary policy responses. The article then analyses the Reserve Bank of Australia's policy responses to recent rises in credit growth and asset price inflation in the property sector. The Bank's responses are characterized in terms of an inflation‐plus targeting framework which has subtly redefined the Bank's approach to inflation targeting to include vaguely defined factors such as mediumterm‘risks’, as well as extending the time frame of such risk assessment. The article explains why, for a variety of reasons, the Bank has been reticent to fully declare its hand.  相似文献   
78.
79.
That survey research is error prone is not a new idea and different varieties of non-sampling error have been investigated in the literature as well as consideration being given in many statistics textbooks to the issue of sampling error. The paper here considers research upon corporate environmental reporting. It compares information provided by corporate environmental reports with information that survey respondents claim their organization’s environmental report contains. This enables the accuracy of the claims to be assessed. Consideration is given to two different industries the Water industry and the Energy industry. Errors due to inaccurate reporting by survey respondents are shown to be relatively infrequent and respondents appear just about as likely to claim they report information that they do not, in fact, report as to fail to indicate that they report information that is, in fact, actually reported.  相似文献   
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