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   14801篇
  免费   402篇
  国内免费   13篇
财政金融   2552篇
工业经济   1138篇
计划管理   2526篇
经济学   3172篇
综合类   302篇
运输经济   95篇
旅游经济   281篇
贸易经济   2731篇
农业经济   786篇
经济概况   1571篇
邮电经济   62篇
  2021年   94篇
  2020年   164篇
  2019年   236篇
  2018年   301篇
  2017年   328篇
  2016年   320篇
  2015年   214篇
  2014年   354篇
  2013年   1450篇
  2012年   394篇
  2011年   431篇
  2010年   405篇
  2009年   441篇
  2008年   480篇
  2007年   466篇
  2006年   373篇
  2005年   358篇
  2004年   336篇
  2003年   344篇
  2002年   319篇
  2001年   295篇
  2000年   297篇
  1999年   269篇
  1998年   275篇
  1997年   281篇
  1996年   288篇
  1995年   247篇
  1994年   236篇
  1993年   263篇
  1992年   248篇
  1991年   235篇
  1990年   220篇
  1989年   193篇
  1988年   157篇
  1987年   188篇
  1986年   196篇
  1985年   284篇
  1984年   291篇
  1983年   277篇
  1982年   243篇
  1981年   244篇
  1980年   209篇
  1979年   217篇
  1978年   161篇
  1977年   166篇
  1976年   143篇
  1975年   120篇
  1974年   110篇
  1973年   103篇
  1972年   80篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
31.
The status quo for school science and technology is unacceptable. While the former often is required for admission to university engineering, as well as to science programmes, the latter is deemed most appropriate for less able, concrete thinkers. This situation persists, despite the fact school science tends to generate large groups of citizens who are relatively scientifically and technologically illiterate, largely as a result of its preoccupation with identifying and training potential scientists and engineers. This practice is tyrannical. It must be abandoned forthwith. A realistic alternative is a combined technology and science programme – perhaps called 'technoscience' education – that would treat science and technology as equals. Such courses may, as well, be more democratic in the sense that technological problem solving often is more natural to everyday situations that everyone may find useful, not just future scientists or engineers. A framework for combined technology and science courses is described and defended here. Originally developed through collaborative action research amongst practising teachers of science, the approach appears to be feasible, under certain – perhaps ideal – conditions. A number of changes to science and technology education may be necessary for broader implementation, not the least of which is a general retrenchment in expectations for pre-determined learning, along with adjustments to teacher education. Nevertheless, the approach is recommended because of its emphasis on: personalization, inclusion, problematization, explicitness, apprenticeship, authenticity, contextualization and freedom. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
32.
Australia is unusual among the world's antitrust jurisdictions in not making the pre‐notification of mergers compulsory. However, if the parties are concerned that the Australian Competition and Consumer Commission (ACCC) is likely to object to the merger, there are strong incentives for them to notify the ACCC as the regulator has developed a strong reputation for imposing heavy costs on parties that fail to notify such mergers. The result is a system of quasi‐compulsory notification that creates the strongest incentives for parties to notify the ACCC of those proposals to which it is most likely to object. This study analyses data extracted from the ACCC's merger database and the empirical results are consistent with this characterisation. Mergers reported voluntarily by the parties are found to experience longer delays to completion, and are more likely to be challenged by the ACCC, when compared with a sample of all other mergers assessed by the regulator. The results suggest that non‐compulsory notification allows the parties themselves to pre‐sort the proposed merger vis‐à‐vis its interest to the ACCC.  相似文献   
33.
34.
35.
Transdisciplinarity: Context, contradictions and capacity   总被引:1,自引:0,他引:1  
  相似文献   
36.
Analysis of firm investment behavior during 1982–1993 shows that the Tax Reform Act of 1986 (TRA 86) Public Law No. 99-514 substantially affects both purchases and leases of depreciable assets. The changes in the regular corporate income tax rules are shown to lower asset acquisition. The effect of the alternative minimum tax (AMT) is found to vary with the debt share in firms’ capital structure and with the frequency of AMT exposure during the life of the assets acquired. On average, TRA86 depresses asset purchases less for firms that are subject to the AMT: AMT somewhat mitigates the negative effects of the regular tax rules.  相似文献   
37.
Accounting Policies in Agencies with Moral Hazard and Renegotiation   总被引:4,自引:1,他引:3  
We emphasize the role of accounting policies, and their audit, in an earnings management setting. We use a two–period agency in which three frictions interact: the agent privately observes action (or effort) supply and output, and the initial contract is subject to renegotiation. This creates a setting in which both players' behavior is of concern, and, importantly, information rationing is efficient. Moreover, this information rationing is directly interpretable as being produced by an accounting policy whose application is ensured by an auditor.  相似文献   
38.
39.
40.
In the presence of foreign factor ownership tariffs change not only the terms of (goods) trade but also income flows between countries. Assume that only the home country owns factors abroad. Then the optimal tariff is negative if and only if foreign factor ownership entails trade-pattern reversals. Trade-pattern reversals are neither a necessary nor a sufficient condition for a negative optimal tariff if the foreign country owns factors in the home country. Changes in the home country's tariff shift the foreign country's offer curve. This adds a new dimension to optimal tariff analysis.  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