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   2990篇
  免费   111篇
  国内免费   25篇
财政金融   362篇
工业经济   183篇
计划管理   429篇
经济学   504篇
综合类   163篇
运输经济   49篇
旅游经济   63篇
贸易经济   409篇
农业经济   121篇
经济概况   365篇
水利工程   473篇
邮电经济   5篇
  2024年   5篇
  2023年   19篇
  2022年   59篇
  2021年   90篇
  2020年   82篇
  2019年   82篇
  2018年   69篇
  2017年   96篇
  2016年   91篇
  2015年   90篇
  2014年   108篇
  2013年   326篇
  2012年   239篇
  2011年   255篇
  2010年   208篇
  2009年   182篇
  2008年   179篇
  2007年   177篇
  2006年   169篇
  2005年   126篇
  2004年   60篇
  2003年   55篇
  2002年   74篇
  2001年   52篇
  2000年   40篇
  1999年   27篇
  1998年   31篇
  1997年   9篇
  1996年   16篇
  1995年   8篇
  1994年   15篇
  1993年   13篇
  1992年   8篇
  1991年   7篇
  1990年   7篇
  1989年   6篇
  1988年   8篇
  1987年   5篇
  1986年   6篇
  1985年   7篇
  1984年   6篇
  1983年   4篇
  1982年   1篇
  1980年   3篇
  1977年   3篇
  1973年   1篇
  1972年   1篇
  1969年   1篇
排序方式: 共有3126条查询结果,搜索用时 0 毫秒
1.
The Bilateral Special Economic Zones is a new idea about economic co-operation ways. It is going to be set by both countries with a common boundary for promoting the economic co-operation between two sides. It can be firstly set along the boundary between China and Vietnam. It will promote the economic co-operation between them, but China and ASEAN. It can be set along the Chinese boundary with the neighboring countries and will promote the economic co-operation between the both sides for setting up a better environment around China.  相似文献   
2.
本项预测采用概率方法,即首先根据广东省水利部门提出的55座土坝和59个重点的座标(见附图),进行概率地震危险性分析,给出它们在一定预测年限T(取50年和100年)的地震烈度Ⅰ的超越概率;其次根据近年我国发生的几次强震时处于不同烈度区内的土坝和堤防的震害资料,形成表示土坝和土堤地震易损性的震害概率矩阵;然后,根据上述两方面结果用概率公式评价各土坝和堤围点在预测年限内各震害等级的超越概率,并取10%超越概率为标准,估计震害等级。结果表明,珠江三角洲土工构筑物的地震危害性南部高于北部。  相似文献   
3.
This study presents important international evidence by examining the wealth effect of domestic joint ventures by Taiwanese firms. In opposite to United States evidence, we find that announcements of domestic joint ventures by Taiwanese firms are, on average, associated with significantly negative abnormal stock returns. We also find that the stock market response to announced domestic joint ventures is significantly positively related to the announcing firms' investment opportunities, size of investment and debt ratio, and is significantly negatively related to the business relatedness variable. In contrast, free cash flow, firm size, relative firm size and managerial ownership are found to have no significant power in explaining the market response. Our results support the investment opportunities, synergy and complementarity hypotheses as well as a broad interpretation of the free cash flow hypothesis, but reject the absolute size, relative size and alignment-of-interests hypotheses. This study makes valuable contributions to the literature by providing the first direct evidence on the role of investment opportunities, synergy and alignment-of-interests in explaining the wealth effect of domestic joint ventures  相似文献   
4.
Four experiments of coagulation and flocculation were conducted to investigate the characteristics of colloidal silica removal in a high-tech industrial wastewater treatment plant for reclamation and reuse of the effluent. Experimental results illustrated that poly-aluminium chloride (PACl) showed higher performances on colloidal silica removal than alum. Interestingly, the two coagulants demonstrated the same capacity on silica removal. The specific silica removal capacity was approximately 0.135 mg SiO2/mg Al2O3 when the dosage of coagulants was in the range 30-150 mg/L Al2O3. In addition, the silica was reduced significantly at the condition of pH above 8. Experimental data implied that precipitation of aluminium flocs was the major mechanism for colloid silica removal in PACl and alum coagulation, besides, charge adsorption was also important for improving removal efficiency. Moreover, the addition of polyacrylic acid (PAA) as a flocculant could slightly advance silica removal in the PACl coagulation. The combined PACl/PAA/flocs coagulation was effective for the removal of colloidal silica, soluble COD, and turbidity and also suitable as a pretreatment unit in wastewater reclamation and reuse processes.  相似文献   
5.
The paper investigates the incentives to commit price or retain price flexibility in a model in which exporting firms face different degrees of exchange rate uncertainty. The result shows that introducing exchange rate uncertainty can lead to the endogenous emergence of a unique leader–follower equilibrium; which firm emerges as price leader depends on the substitutability of products, the magnitude of exchange rate uncertainty, and the cost structure. This study may provide one explanation as to why some exporters set price before the realization of the nominal exchange rates (“sticky price”). The results imply exchange rate variability affects exchange rate passthrough.  相似文献   
6.
7.
8.
【美国《华尔街日报》7月23日】中国的隐性债务可能成为一大麻烦。  相似文献   
9.
财政分权与义务教育财政管理体制问题探析   总被引:2,自引:0,他引:2  
我国是成功实施财政分权化的国家之一。作为公共财政框架部分之一的义务教育也实行了分权化管理,义务教育办学的责任主要地落在了县、乡两级地方政府身上。而我国庞大的义务教育事业由县、乡甚至村脆弱的财力来承担,可谓“杯水车薪”:一些农村地区和贫困山区学龄儿童无学可上,无书可读等现象屡见不鲜。可见过度分权化的义务教育财政管理体制是制约当今中国义务教育发展的症结所在。  相似文献   
10.
This study is an investigation of the effect of profit-sharing on labor productivity. When monitoring labor performance is costly for management, a regular wage/salary contract is insufficient to induce profit-maximizing behavior from the worker. The authors demonstrate that when this profit-maximizing behavior can be induced only through profit-sharing, a linear profit-sharing program will increase productivity and the welfare of both management and labor. The benefit from profit-sharing is increasing up to the point where the utility of additional income is offset by the negative utility of extraordinary effort (working harder or providing higher quality work). The income effect, i.e., the change in negative utility of extraordinary effort given a change in income, can potentially either increase or decrease the point at which the income-effort tradeoff-reaches zero.  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