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   26007篇
  免费   247篇
  国内免费   1篇
财政金融   4337篇
工业经济   1537篇
计划管理   4183篇
经济学   5926篇
综合类   679篇
运输经济   45篇
旅游经济   148篇
贸易经济   5914篇
农业经济   393篇
经济概况   2453篇
信息产业经济   44篇
邮电经济   596篇
  2020年   108篇
  2019年   138篇
  2018年   2444篇
  2017年   2234篇
  2016年   1368篇
  2015年   225篇
  2014年   272篇
  2013年   930篇
  2012年   699篇
  2011年   2171篇
  2010年   2049篇
  2009年   1770篇
  2008年   1756篇
  2007年   2082篇
  2006年   266篇
  2005年   560篇
  2004年   636篇
  2003年   730篇
  2002年   393篇
  2001年   259篇
  2000年   255篇
  1999年   174篇
  1998年   186篇
  1997年   202篇
  1996年   186篇
  1995年   180篇
  1994年   164篇
  1993年   167篇
  1992年   195篇
  1991年   189篇
  1990年   150篇
  1989年   152篇
  1988年   123篇
  1987年   121篇
  1986年   139篇
  1985年   178篇
  1984年   156篇
  1983年   171篇
  1982年   137篇
  1981年   168篇
  1980年   140篇
  1979年   160篇
  1978年   134篇
  1977年   119篇
  1976年   125篇
  1975年   106篇
  1974年   103篇
  1973年   85篇
  1972年   64篇
  1971年   58篇
排序方式: 共有10000条查询结果,搜索用时 125 毫秒
51.
52.
53.
54.
This article focuses on the housing issues of rural migrants arising from urbanization, with particular reference to chengzhongcun, a topic with considerable impact on policymaking. An attempt is made to understand the underlying rationale of self‐help in housing and the important role of chengzhongcun in sheltering rural migrants in the context of China's rural‐urban dichotomy. As demonstrated in this study, chengzhongcun accommodate, with little in the way of government resources and assistance, millions of rural migrants because of their social accessibility and affordability. While not denying their social problems, we argue that chengzhongcun in fact act as an innovative and positive agent to promote urbanization in present day China by housing massive numbers of rural migrants and assimilating them into cities. Current government policies towards chengzhongcun have generated a wide range of interest conflicts and confrontations. The consequences of such conflicts show that the government policies were problematic and unworkable, as they violated basic market principles as well as citizen rights. Policy strategy towards the redevelopment of chengzhongcun must acknowledge their credibility in the Chinese road to urbanization and requires more thoughtful and prudent consideration of migrants' demands for affordable housing.  相似文献   
55.
56.
57.
58.
59.
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   
60.
B.   《Technovation》2003,23(12):929-937
This research investigates the degree of emphasis placed by the Australian manufacturing industry on Research and Development (R&D) strategy as well as on other organisational strategies such as marketing, HRs (HR), technology, and operations at the functional level. The research extends further to investigate whether the emphasis on R&D strategy differs with contextual factors such as firm size, firm’s generic strategy, type of market, firm’s life cycle stage, etc. A mail survey was carried out to collect information from manufacturing firms across Australia. This was followed by an on-site interview of some of the senior managers of manufacturing firms from three Australian states: South Australia, Victoria and New South Wales.The study found that although the emphasis on R&D strategy has received a high priority in the past few years, it has not been as effective as the operations strategy and the technology strategy. The operations strategy has been accorded the highest importance in the past few years and this will continue in the future. The study also indicated that firms, which adopt a differentiation generic strategy, put more emphasis on R&D than the firms, which adopt cost leadership and focus generic strategies. The results did not indicate any evidence of a relationship between firm size and the R&D strategy although large firms are found to put more emphasis on operations and marketing strategies. Relatively higher emphasis was placed on the R&D strategy by businesses: at the growth stage; involved in the manufacture of consumer goods as opposed to industrial goods; involved in exports with a higher sales growth in export markets; and having a higher growth rate relative to their industry.  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