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   18583篇
  免费   600篇
财政金融   3402篇
工业经济   1437篇
计划管理   3156篇
经济学   4215篇
综合类   185篇
运输经济   179篇
旅游经济   316篇
贸易经济   3105篇
农业经济   808篇
经济概况   2369篇
信息产业经济   1篇
邮电经济   10篇
  2023年   136篇
  2021年   171篇
  2020年   283篇
  2019年   336篇
  2018年   540篇
  2017年   598篇
  2016年   527篇
  2015年   328篇
  2014年   487篇
  2013年   2222篇
  2012年   630篇
  2011年   610篇
  2010年   615篇
  2009年   659篇
  2008年   542篇
  2007年   458篇
  2006年   416篇
  2005年   370篇
  2004年   343篇
  2003年   364篇
  2002年   330篇
  2001年   319篇
  2000年   351篇
  1999年   304篇
  1998年   290篇
  1997年   293篇
  1996年   272篇
  1995年   242篇
  1994年   243篇
  1993年   280篇
  1992年   258篇
  1991年   260篇
  1990年   245篇
  1989年   234篇
  1988年   212篇
  1987年   192篇
  1986年   221篇
  1985年   306篇
  1984年   283篇
  1983年   276篇
  1982年   240篇
  1981年   230篇
  1980年   246篇
  1979年   201篇
  1978年   173篇
  1977年   165篇
  1976年   144篇
  1975年   132篇
  1974年   117篇
  1973年   106篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
This note provides an account of the introduction of a modified version of the Keller Plan in an advanced financial accounting course. The experiment involved (1) issuing detailed study guides which included a specification of behavioural outcomes; (2) abandoning large group lectures in favour of small group discussions and (3) measuring achievement by multiple choice testing. Although the degree of individualised learning was limited, most students felt that the changes made - especially the introduction of discussion groups - were of some improvement in their learning and development.  相似文献   
992.
There are two types of micro-states, islands and mainland ones. Except for a few islands very close to the coast, most of the insular micro-states are demographically very different from the rest of the Third World. Their death-rates are lower, their birth-rates lower, and the propensity of their populations to migrate to developed countries higher. It is argued here that these differences are based on other social and economic differences, which can be summarized by saying that such states are more Westernized. They were part of the European maritime system at a time when the West did not have the economic strength to penetrate continental areas to the same extent. On the whole they retained colonial links longer.  相似文献   
993.
This article predicts escalating premiums and a greater risk of malpractice suits based on the increasing frequency and cost of claim payouts. The number of insurance claims increased by 12% in 1978 after a decrease of 11% in 1976 and by 2% in 1977. The percentage of premium income paid out has followed the same pattern. It was a high of 66.5% in 1975 and then fell into the 40% range in the next two years. Last year it bounced back to 60.6%. Some insurance authorities view the 1976-77 drop in claims as artificial and attribute it to a reluctance to file suits during the period immediately following new malpractice laws. The reluctance to sue has apparently relaxed. About 16% of the cases actually go to court. Out of those, 90% of the verdicts favor doctors. The rise in cases going to court shows that reform! legislation passed in several states to reduce malpractice litigation is not yet working. The average payout was up 20% between 1976 and 1978 with the greatest rise in large awards; million-dollar settlements are not uncommon. Escalating payouts are attributed to general inflation anf rising medical costs. In addition, the public has become better medically informed and been taught that for every wrong ther is a remedy.  相似文献   
994.
995.
996.
A simulation-based methodology for the evaluation of the emergency ambulance system in the Vancouver, Canada, metropolitan area has been created. Outputs from the simulation of the system are utilized in the creation of the objective function of a branch and bound optimization procedure. The solutions are thus obtained at a significantly lower cost than if only simulation were used. The final solutions were verified by simulation runs.  相似文献   
997.
998.
999.
1000.
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