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   54041篇
  免费   1394篇
  国内免费   708篇
财政金融   3586篇
工业经济   2888篇
计划管理   13852篇
经济学   7955篇
综合类   8014篇
运输经济   596篇
旅游经济   1223篇
贸易经济   8089篇
农业经济   3655篇
经济概况   6285篇
  2024年   146篇
  2023年   617篇
  2022年   888篇
  2021年   1433篇
  2020年   1759篇
  2019年   1115篇
  2018年   939篇
  2017年   1100篇
  2016年   1221篇
  2015年   1543篇
  2014年   3961篇
  2013年   4983篇
  2012年   4725篇
  2011年   5758篇
  2010年   4348篇
  2009年   3441篇
  2008年   3494篇
  2007年   2974篇
  2006年   2783篇
  2005年   2153篇
  2004年   1502篇
  2003年   1286篇
  2002年   949篇
  2001年   889篇
  2000年   595篇
  1999年   362篇
  1998年   197篇
  1997年   166篇
  1996年   129篇
  1995年   99篇
  1994年   74篇
  1993年   68篇
  1992年   60篇
  1991年   47篇
  1990年   37篇
  1989年   20篇
  1988年   24篇
  1987年   8篇
  1986年   10篇
  1985年   43篇
  1984年   63篇
  1983年   47篇
  1982年   37篇
  1981年   13篇
  1980年   15篇
  1979年   13篇
  1978年   2篇
  1977年   6篇
  1973年   1篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
111.
文章以广州南部快速路珠江特大桥主墩承台施工为背景,详细介绍了无封底钢吊箱围堰一次性整体吊装在大型承台施工中的应用。  相似文献   
112.
The purpose of this article is to use Albert Hirschman's Exit, Voice, and Loyalty framework to analyze the extent to which corporate employees are merely attached to the firm rather than committed. A model of managerial loyalty is developed where loyalty is defined as the percentage pay increase that an employee would require to leave the current firm for alternative employment. Independent variables in the model include barriers to exit and voice. This model was tested on three data sets from North American airlines. This model received empirical support during a stable environment but was not strongly supported during a more turbulent environment. Implications of the results are discussed.  相似文献   
113.
中国财政性教育投资的实证分析与对策研究   总被引:4,自引:0,他引:4  
在现代市场经济社会里 ,几乎所有国家的政府投资在为全社会提供教育服务方面都起着主导作用。我国财政性教育投资严重不足 ,而且教育投资结构很不合理 ,因此必须改变教育投资观念 ,切实、稳定增加财政的教育投资 ,优化财政教育投资结构  相似文献   
114.
This paper evaluates the performance of glamour and value strategies and tests the extrapolation model for the Japanese equity market. In general, value stocks outperform glamour stocks by between 6 and 12 percent per annum for the five years after portfolio formation. Evidence from past, future and expected growth provides strong support for the story developed in Lakonishok, Shleifer and Vishny (1994). It is difficult to attribute the value premia to the difference, if any, in risk factors. In addition, the book-to-market premium is much closer to an arbitrage opportunity than the size premium.  相似文献   
115.
This paper employed eleven data series which consist of stocks, bonds, bills, equity premiums, term premiums, and various default premiums to investigate whether January seasonality reported in existing literature is robust across different states of the economy as this has important trading implications. For the periods 1926–1990, small stocks, small stock premiums, low grade bonds, and default premiums (spread between high grade, low grade and government bonds) reveal January seasonality and that the seasonality is robust across different states of the economy except for low grade bond returns and default premiums. January seasonality for low grade bond returns and low grade bond default premiums are primarily driven by results found during periods of economic expansion. Overall, January seasonality is more evident during the economic expansion periods although the magnitude of default premiums is larger during periods of economic contraction. Furthermore, prior findings of strong summer equity returns are primarily driven by the results found during the periods of economic contraction. It is also found that equity returns are generally higher during periods of economic expansion.  相似文献   
116.
在当今世界,俄罗斯在解决国际重大争端,处理全球重大事务等方面具有不可或缺、不可替代的重要地位和作用.因此,研究普京的内政外交新动向意义重大.在内政方面,普京正在全力实施以能源、武器和原材料生产为核心的中长期经济振兴计划,提出了10年内翻番的目标.在对外事务中的布局层次是--独联体是重中之重,欧洲及美国是首要,亚太一些周边大国是关键,东欧、中东、非洲和拉美不可忽视.  相似文献   
117.
纯氧曝气的研究进展   总被引:9,自引:0,他引:9  
介绍了纯氧曝气的生化机理、应用领域、供氧方式、污泥性能等以及它与普通空气曝气相比在技术、经济方面显示出的优越性。随着纯氧曝气的发展和国家新标准增加了脱氮除磷方面的排放要求,使得纯氧曝气在城市污水处理老厂的改造和新厂的建设中具有很好的前昔。  相似文献   
118.
介绍了小型化、通用化和实时信号处理要求下,雷达接收机的通用数据采集处理硬件平台。采用Xilinx公司最新平台级FPGA产品Spartan-3系列芯片构建平台,并实现其中的FFT于模块。试验表明,处理精度和速度都满足要求,为该方案的可行性和后续模块的实现提供了依据。  相似文献   
119.
Two standard‐setting approaches have emerged globally to guide the choice of accounting for securitizations: the control and components approach (SFAS No. 125 and SFAS No. 140) and the risks and rewards transfer approach (IAS No. 39). A lack of consensus about derecognition accounting is a major impediment to achieving convergence in global standards that must be resolved. Thus, both SFAS No. 140 and IAS No. 39 will be reexamined, and evidence pertinent to the debate is timely and important. In this study, we present evidence consistent with the view of credit‐rating analysts, who view many securitizations as, in substance, secured borrowings. Specifically, for a sample of originators applying sale accounting guidance in SFAS No. 125 / 140 during the period 1997‐2003, we show that off‐balance‐sheet debt related to securitizations has, on average, the same risk‐relevance for explaining market measures of risk (that is, CAPM beta) as on‐balance‐sheet debt. We also find that, in a returns and earnings association framework, the pricing multiple on securitization gains declines as the amount of off‐balance‐sheet debt increases, implying that investors take off‐balance‐sheet debt into account when assessing the valuation‐relevance of such gains. For those who advocate the control and components approach to securitization accounting, our results suggest that, at least for frequent securitizers, the put option arising from implicit recourse is a “missing piece” that is not currently accounted for when calculating securitization gains. Our results challenge the extant measurement standards in SFAS No. 140.  相似文献   
120.
系统地剖析了杜邦莱卡纤维独特的互动营销模式,阐述了导入消费品营销手法、与下游企业建立互动联盟从而推动化纤产品市场营销运作的新思路,激励本土化纤食业创新理念、争取主动。  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