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   19336篇
  免费   146篇
财政金融   3235篇
工业经济   920篇
计划管理   3061篇
经济学   4447篇
综合类   494篇
运输经济   41篇
旅游经济   47篇
贸易经济   4889篇
农业经济   106篇
经济概况   1626篇
信息产业经济   44篇
邮电经济   572篇
  2023年   31篇
  2022年   13篇
  2021年   34篇
  2020年   52篇
  2019年   75篇
  2018年   2374篇
  2017年   2123篇
  2016年   1281篇
  2015年   146篇
  2014年   168篇
  2013年   390篇
  2012年   540篇
  2011年   2056篇
  2010年   1914篇
  2009年   1641篇
  2008年   1617篇
  2007年   1957篇
  2006年   170篇
  2005年   477篇
  2004年   535篇
  2003年   622篇
  2002年   326篇
  2001年   119篇
  2000年   109篇
  1999年   59篇
  1998年   80篇
  1997年   55篇
  1996年   46篇
  1995年   47篇
  1994年   49篇
  1993年   26篇
  1992年   33篇
  1991年   14篇
  1990年   21篇
  1989年   17篇
  1988年   18篇
  1987年   16篇
  1986年   31篇
  1985年   22篇
  1984年   18篇
  1983年   23篇
  1982年   21篇
  1981年   12篇
  1980年   10篇
  1979年   18篇
  1978年   12篇
  1977年   10篇
  1976年   11篇
  1975年   9篇
  1973年   9篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
61.
Construction kits have played a significant part in nurturing the growth and development of the minds and manipulation-based skills of children (and adults) in formal and non-formal education settings. These kits have origins rooted in the representation of the built world and now have a diversity of form and function, including technical versions with moving parts. This article examines some of the historically based ideas that lie behind the role that kits may have in terms of physical modelling. The article traces the transformation of kits from simple bricks and blocks into more complicated pieces for space-filling and achieving the transfer of forces and motion. This transformation occurred during the Victorian era when the influence of the ideas of educationalists and, perhaps rather strangely, exponents of early aviation, played major roles in determining the diversity of forms of construction kit and modelled possibilities that are now to be seen in classrooms and homes. The article ends with a review of some of the lessons from the past and present that will need to be considered in relation to concrete modelling in schools for the future. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
62.
63.
In this second of two related papers in this issue, the causes of declining levels of housing transactions in Britain during the 1990s are explored. The lower transaction levels resulted partly from the changing behavior of young individuals. Both household formation and owner–occupation rates of these groups also fell sharply. Using panel data, we investigate the causes of reduced new household formation and owner–occupation, finding that changes in the income distribution away from young cohorts have been an important factor.  相似文献   
64.
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   
65.
66.
This paper attempts to explain why home ownership rates among young adults fell in the early 1990s when various indicators suggested it had become more affordable. As a potential explanation, we focus on the relatively slower growth in their incomes and argue that this could signal a fundamental change in behaviour, a change in route adopted into owner occupation, induced by structural economic change. In examining the implications for housing tenure, we use a conditional fixed effects multinomial logit model to exploit the information on the tenure choice and the timing of transitions in the British Household Panel Survey. Our results reveal that relatively slower income growth contributed significantly to this decline and that ignoring the intertemporal correlation in micro‐panels generates inconsistent results.  相似文献   
67.
68.
Abstract: The pronouncement by the G‐8 Summit at Gleneagles in July 2005 on debt cancellation under the HIPC Initiative, affirmed by the G‐8 Ministers of Finance in Washington in September, should signal the beginning of debt relief for the world's heavily indebted poor countries (HIPC), mostly African. It is expected that debt cancellation should return the beneficiary countries to debt sustainability and afford their governments the fiscal space to invest in basic infrastructure and social services. Countries could significantly enhance their prospects for maintaining debt sustainability mainly by adopting debt management strategies that de‐emphasize excessive borrowing, checking the expansion of unproductive public sector activities and the associated fiscal deficits, financial restructuring to reduce the bias against autonomous capital flows, and taking deliberate actions to expand exports.  相似文献   
69.
This paper uses evidence from late nineteenth-and early twentieth-century personnel records of two Australian banks to examine the nature of internal labour markets prior to the Second World War. It is argued that the industry possessed all the classic features of internal labour markets: limited ports of entry, internal promotion, long careers, and assignment of wages by well-defined rules. The paper then examines the reasons why banks adopted internal labour markets. Finally, the paper examines the recent decline of internal labour markets and examines the role of technological and social changes in this decline.  相似文献   
70.
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   
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