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   10754篇
  免费   573篇
  国内免费   197篇
财政金融   1373篇
工业经济   445篇
计划管理   3377篇
经济学   1483篇
综合类   1543篇
运输经济   81篇
旅游经济   129篇
贸易经济   1544篇
农业经济   604篇
经济概况   945篇
  2024年   19篇
  2023年   212篇
  2022年   189篇
  2021年   282篇
  2020年   291篇
  2019年   220篇
  2018年   209篇
  2017年   243篇
  2016年   242篇
  2015年   332篇
  2014年   683篇
  2013年   938篇
  2012年   779篇
  2011年   965篇
  2010年   784篇
  2009年   582篇
  2008年   780篇
  2007年   752篇
  2006年   705篇
  2005年   660篇
  2004年   465篇
  2003年   343篇
  2002年   235篇
  2001年   177篇
  2000年   146篇
  1999年   76篇
  1998年   57篇
  1997年   29篇
  1996年   26篇
  1995年   17篇
  1994年   17篇
  1993年   8篇
  1992年   8篇
  1991年   6篇
  1990年   6篇
  1989年   4篇
  1988年   1篇
  1987年   3篇
  1986年   6篇
  1985年   5篇
  1984年   8篇
  1983年   13篇
  1982年   1篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
A moral hazard model is used to show why overly optimistic revenue forecasts prior to elections can be optimal: Opportunistic governments can increase spending and appear more competent; ex post deficits emerge in election years, thereby producing political forecast cycles – as also found for US states in the empirical literature. Additionally, we obtain three theoretical results which are tested with panel data for Portuguese municipalities. The extent of manipulations is reduced when (i) the winning margin is expected to widen; (ii) the incumbent is not re-running; and/or (iii) the share of informed voters (proxied by education) goes up.  相似文献   
2.
Social media emerged as a primary source of information among young users, but its severe effect on mental state due to information overload, still an area of concern for the researchers. Generation Z users' addiction to the mobile phone/gadgets is increasing with a rise in social media and consequently their behavioral outcomes have transformed completely. Nowadays behavioral issues including stress, fatigue, ‘fear of missing out’ and ‘phubbing’, anxiety etc. rising each day but the relationship among these issues and information overload is less examined. The social media users are unable to filter the trustworthy information due to its enormous size and thus role of information support from government becomes essential. The current study extends the S-O-R theory exploring relationship between the stimulus of enormous information on the responses generated among the Generation Z such as social media fatigue, ‘fear of missing out’, ‘phubbing’ and anxiety. The findings from a sample of 319 users belonging to Generation Z suggest that social media platforms need to understand user's compulsive usage that is resulting into fatigue and consequently anxiety. The role of government information support on reducing fatigue and anxiety is found to be positive. The relationship between ‘fear of missing out’, ‘phubbing’ and anxiety is found significant and shows presence of partial mediation. The study offers significant theoretical and practical implications. It is significant for the service providers and social media platforms to advance interfaces with minimum fatigue for the users and offers information support to the users to reduce stress caused by information load.  相似文献   
3.
We study unconventional policy shocks and information shocks associated with central bank announcements in the U.S. While unconventional policy shocks capture the direct influence of announced monetary policy actions, information shocks are associated with central bank information conveyed with the announcement. To disentangle these two types of shocks, we impose sign restrictions on high frequency changes in interest rates and stock prices around announcements. We find that information shocks lead to persistent declines in the 10-year government bond yield, whereas the actual unconventional policy shock induces only small interest rate responses. We also find that expansionary output effects of unconventional monetary policy are to some extent counteracted by the information shock.  相似文献   
4.
Since Benford’s law is an empirical phenomenon that occurs in a range of data sets, this raises the question as to whether or not the same thing might be true in terms of the Chinese income distribution data. We focus on the first significant digit (FSD) distribution of Chinese micro income data from the 2005 Inter-Census sample, which corresponds to 1% of Chinese population and other micro income data from the China family panel studies (CFPS) and Chinese General Social Survey (CGSS). We use information theoretic-entropy based methods to investigate the degree to which Benford’s FSD law is consistent with the FSD of Chinese income data and our findings suggest consistency between the Chinese FSD income distribution and Benford’s distribution. The close connection between the two distributions has implications for the quality of the sample of Chinese micro data.  相似文献   
5.
Although flexibility has been considered critical in responding to uncertainty in a business environment, few studies have explored firms' flexibility in sustainable development. To understand the nature of firms that can respond better to uncertainty in their sustainable development practices, this study defines sustainable development flexibility and investigates the mechanism underlying its formation. The study proposes a conceptual framework on the interactions of managers' environmental attitude and cognitive style, as well as firms' information integration on sustainable development flexibility. A questionnaire survey was developed to test the corresponding hypotheses, and 241 valid responses were received from middle- and top-level managers in Chinese firms. The results show that (a) the higher the manager's environmental attitude, the higher the firm's information integration and greater sustainable supply chain flexibility, and (b) the more intuitive the manager's cognitive style, the greater the impact of environmental attitude on sustainable development flexibility.  相似文献   
6.
使用SBM-Undesirable模型测算我国31省份的新能源制氢效率,从新能源制氢效率和新能源装机容量两个维度构建评价体系,再应用熵权评价法,对我国31省份的新能源制氢潜力进行分析,同时研究了新能源制氢潜力2017—2030年的变化情况。结果表明:风电制氢的效率明显高于光伏制氢;西北和华北地区的新能源制氢潜力明显高于其他地区;西北和华南地区存在新能源制氢潜力与加氢设施建设之间短期发展不均衡的现象;2030年我国各省份新能源制氢效率和潜力较2017年都有所提升。最后,依据评价结果提出改善我国氢能产业发展的对策建议。  相似文献   
7.
We propose a novel method and algorithm for the analysis and clustering of mixed-type data using a hierarchical approach based on Forward Search. In our procedure, the identification of groups is based on the identification of similar trajectories and then linked to very intuitive two-dimensional maps. The proposed algorithm can use different measures for the calculation of distance in the case of mixed-type data, such as Gower’s metric and Related metric scaling. A key feature of our algorithm is its ability to discard redundant information from a given set of variables. The practical usefulness of the algorithm is illustrated through two applications of high relevance for empirical economic research. The first one focuses on comparing different indicators of environmental policy stringency in different countries. The second one applies our procedure to identify clusters of countries based on information regarding their institutional characteristics.  相似文献   
8.
本文基于2018—2020年“中国城市生活质量调查”数据,以新冠肺炎疫情为一次准自然实验,利用双重差分法,检验新冠肺炎疫情对消费者信心的影响。研究发现:新冠肺炎疫情在一定程度上降低了消费者信心,但收入较高人群的消费者信心非但没有降低,反而升高了。另外,从政府信息公开角度进行机制检验发现,政府关于新冠肺炎疫情方面的信息公开会在一定程度上缓解疫情对消费者信心的负面影响。因此,应当理性地看待新冠肺炎疫情对消费者信心的影响,针对特定群体制定相应的政策措施;同时,充分利用各种信息公开渠道,缓解疫情对消费者信心的负面影响,提振消费者信心,激发市场活力。  相似文献   
9.
The present study extends prior research on stockouts by examining how product-related attributes interact with OOS justifications to influence consumer responses to stockouts. Drawing from Out-of-stock (OOS) literature, this study investigates how perceived popularity, perceived uniqueness, negative affect, and behavioral outcomes are influenced by out-of-stock justifications, product type, and sales level. Two scenario-based experiments and two field studies are conducted in which the cause of the stockout, product type, and sales level are manipulated at different levels. The results of the studies provide the following primary insights- 1) Consumers infer popularity of the product when the product is OOS due to high demand or when the sales level is high 2) Consumers infer uniqueness of the product when the product is OOS due to short supply but not when sales level is low 3) As the perceived popularity of utilitarian products or the perceived uniqueness of hedonic products increases, consumers' propensity to switch stores to purchase the OOS products increases 4) Consumers’ intention to spread negative word of mouth decreases when the cause of OOS or a high sales level is specified. Retailers can influence behavioral outcomes by specifying the cause of stockout tailored according to the type of product, or by providing sales level information.  相似文献   
10.
以2005~2018年我国A股上市公司为样本,研究会计稳健性对盈余惯性的影响。实证结果表明,会计稳健性可以显著降低盈余惯性。作为资本市场的重要中介,机构投资者和分析师在会计稳健性影响盈余惯性中发挥了积极作用,表现有机构投资者持股比例高的公司和有分析师关注的公司,会计稳健性对盈余惯性的缓解作用更加明显。进一步研究考察会计稳健性缓解盈余惯性的作用机制,结果表明,会计稳健性通过提高会计信息质量和增强投资者关注度两条路径缓解了盈余惯性。  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