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   21838篇
  免费   998篇
  国内免费   548篇
财政金融   2313篇
工业经济   1054篇
计划管理   4603篇
经济学   4224篇
综合类   3162篇
运输经济   164篇
旅游经济   201篇
贸易经济   3130篇
农业经济   1302篇
经济概况   3231篇
  2024年   34篇
  2023年   400篇
  2022年   411篇
  2021年   734篇
  2020年   824篇
  2019年   543篇
  2018年   500篇
  2017年   599篇
  2016年   621篇
  2015年   687篇
  2014年   1484篇
  2013年   1819篇
  2012年   2092篇
  2011年   1936篇
  2010年   1485篇
  2009年   1346篇
  2008年   1592篇
  2007年   1290篇
  2006年   1299篇
  2005年   1038篇
  2004年   738篇
  2003年   536篇
  2002年   395篇
  2001年   334篇
  2000年   199篇
  1999年   119篇
  1998年   71篇
  1997年   63篇
  1996年   56篇
  1995年   39篇
  1994年   27篇
  1993年   15篇
  1992年   11篇
  1991年   13篇
  1990年   6篇
  1989年   6篇
  1987年   1篇
  1986年   3篇
  1985年   5篇
  1984年   2篇
  1983年   6篇
  1982年   3篇
  1981年   2篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
41.
This paper contributes to the home (market) bias literature where administrative or political borders limit trade across borders. Home bias is well documented at the national and subnational level. To sort out macro (e.g., location characteristics) and micro (e.g., enterprise characteristics) factors behind home bias, we use small and medium‐sized enterprise (SME) data from Vietnam. Using the fractional multinomial logit model, we find that the proportion of SME sales outside of their home markets is positively associated with enterprise size, age, number of business association memberships and the distance of SMEs' most important supplier. In contrast, the proportion of SME sales to neighbouring provinces is negatively associated with the share of SME production for final consumption. Besides enterprise‐level frictions, market characteristics matter too. The proportion of SME sales to customers in their home markets is negatively associated with home or neighbouring provinces' governance quality, while the proportion of sales to customers in neighbouring provinces is positively associated with these areas' governance quality. These suggest that good governance frees SME resources for use in selling to less familiar markets.  相似文献   
42.
This paper contributes to debates about the appropriate characterisation of heterogeneous investment types and to what extent different investment motives affect the responsiveness to corporate taxation. In particular, we employ and refine a methodology to better evaluate the tax elasticity of investment types. Using a combination of both firm‐specific information and sector‐specific information from input–output tables, we discuss how to classify investment as non‐related, horizontal, vertical and complex types. First, we point out to what extent the resulting classification depends on assumptions made by the researcher. Second, we employ an ample set of classifications and find that non‐related investment reacts stronger to corporate taxation, whereas horizontal investment is less responsive, though, significant negative tax semi‐elasticities turn out for the subset of manufacturing industries. To address inherent characteristics of vertical and complex investment, we extend the methodology and find that, by and large, stronger business motives reduce the tax responsiveness of investment to a larger extent. Given the current debates about substantial corporate tax reforms, it is all the more important to recognise that corporate tax effects can vary fundamentally between countries, driven by country‐specific differences in their composition of industries and investment types.  相似文献   
43.
Airport performance differences require a better understanding of the sources of efficiency and competitive advantages. Globalization drives the air transport industry into a more market-orientated business questioning the relationship between managerial decisions and airport performance. Aviation management studies do not consider managerial capabilities and skills since they are intangible exogenous factors that are difficult to assess. In this study, a stochastic frontier analysis is performed accounting for top managers' theoretical knowledge and experience enclosed as exogenous drivers of airports' efficiency. The model analyses 12 Polish airports from 2009 to 2017. The results show a diversity of airports with a different number of passengers as efficient. The top managers' experience, when gained in the same airport, has a positive impact on airports' technical efficiency. Airports having unstable management are more technically inefficient. Independently of the efficiency level, some airports change their management after the national elections, suggesting that managers are chosen by political interest rather than by their specialised knowledge or their prior experience in aviation management. The results suggest that more practical knowledge improve airports’ performance. Airports with a majority of government ownership that are the largest ones increase their efficiency significantly, suggesting that political decisions may be discriminatory in detriment of airports managed by regional and city authorities.  相似文献   
44.
采用Malmquist-Luenberger指数法对华东地区森林公园生态效率值进行测定的结果表明:从时序范围看,2011—2016年华东地区森林公园生态效率的均值为1. 006,但从2015年起进入下滑态势,说明华东地区森林公园的生态效率已经达到有效水平,但在扩大森林公园规模的同时忽视了对环境的有效保护以及资源的合理配置;从空间差异角度看,只有浙江与安徽两省的森林公园生态效率值未达到有效水平(分别为0. 851和0. 871),其余各省(市)的森林公园生态效率值均大于1,说明区域内存在一定的差异性;技术进步指数下降是制约MalmquistLuenberger指数提升的主要原因。由此可见,加大技术投入,促成交流合作机制,形成特有的竞争优势等,对提高区域森林公园生态效率是十分重要的。  相似文献   
45.
We provide evidence on how corporate bond investors react to a change in yields, and how this behaviour differs in times of market‐wide stress. We also investigate ‘reaching for yield’ across investor types, as well as providing insights into the structure of the corporate bond market. Using proprietary sterling corporate bond transaction data, we show that insurance companies, hedge funds and asset managers are typically net buyers when corporate bond yields rise. Dealer banks clear the market by being net sellers. However, we find evidence for this behaviour reversing in times of stress for some investors. During the 2013 ‘taper tantrum’, asset managers were net sellers of corporate bonds in response to a sharp rise in yields, potentially amplifying price changes. At the same time, dealer banks were net buyers. Finally, we provide evidence that insurers, hedge funds and asset managers tilt their portfolios towards higher risk bonds, consistent with ‘reaching for yield’ behaviour.  相似文献   
46.
Economic freedom (freedom from the intervention of government) is essential for doing business, so economic freedom of both the home country and the host country are important for bilateral foreign direct investment. However, though some literature has investigated the role of host country's economic freedom in bilateral direct investment, no literature has studied the role of home country's economic freedom. This paper has studied this issue in a gravity model with a sample of 155 countries. This paper has also employed some effective estimation techniques of gravity model to incorporate the zero observations and adopted quantile regression method. The findings indicate that economic freedom of both the home country and the host country are positively correlated with bilateral direct investment, and the economic freedom of home country has even stronger explanatory power for foreign direct investment. Hence, promoting the economic freedom may encourage more outward foreign direct investment than inward direct investment.  相似文献   
47.
陈实  陈娜  陈平 《科技和产业》2019,19(3):106-113
研究筛选了2005-2007年连续三年都有研发投入的规模以上工业企业,主要采用超效率DEA模型,比较了两位数行业10项投入指标和11项产出指标对总体技术效率的贡献,发现限制行业投入产出效率的主要因素是"应收账款"和"广告费"。由于企业间欠账的普遍性和长期累积造成的高额度,严重制约了行业技术效率的提升,造成反映企业生产销售状况的主要产出指标普遍冗余,陷入即使增加投入也无助于提高产出效率的怪圈,其在行业中的普遍性和严重性已经很大程度影响了企业的创新效率,进而影响生产与销售行为,应引起政府管理部门的及早重视,并加以疏通和解决。  相似文献   
48.
There is growing concern that farmland transfers lead to less agricultural investment, which may adversely affect agricultural productivity growth in China. Prior research has primarily focused on the differences between owned cultivated land and rented plots, but little is known about how farmland transfers between relatives, which are popular in rural China, specifically affect agricultural investment. In this paper, we present a conceptual framework of transaction cost economics to compare different contracting strategies in China's farmland rental markets. As farmland rental markets in China are immature, land transfer between relatives establishes bilateral governance, which has the advantage of addressing the opportunistic activities of both parties and can ultimately increase investment by tenants. Based on data from two waves of household surveys, we empirically examine the impact of bilateral governance on the application of organic fertilizer, an indicator for agricultural investment. Our findings show that apart from economic factors, kinship is important to the functioning of farmland rental markets in rural areas.  相似文献   
49.
High firewood consumption for heating produces high levels of pollution in cities in central and southern Chile, with serious consequences for health and quality of life. Energy efficiency measures (EEMs) have been identified as the best strategy to reduce air pollution and maximize social benefits. However, their adoption has been slow. The objective of this article is to investigate household preferences for financial incentives needed to promote private investments in EEMs in Central-Southern Chilean households and study the role of energy savings and the uncertainty about potential savings in the investment decision, with the aim of finding solutions to increase the adoption of these technologies. We use a choice experiment to explore the trade-off between the investment costs, financial instruments, energy savings, and the uncertainty about achieving the theoretical savings provided by engineering and architectural models. The results show that financial instruments play the most important role in this decision, followed by the savings achieved by the retrofit. Householders prefer to finance their investments with a mix of their personal resources and medium-term credits, trying to avoid long-term commitments. Although uncertainty was found to be a significant variable, it seems to play a small role in the investment decision.  相似文献   
50.
保险资金作为重要的机构投资者能否发挥促进公司绩效提升的作用在已有研究和监管政策制定上都存在较大争议。本文以2005-2017年A股上市公司为研究样本,发现险资持股比例对上市公司绩效以及估值影响存在显著的倒U型曲线效应,相应机制研究表明险资持股通过显著影响两类代理成本的渠道发挥治理作用。在适度持股比例以下,险资增持能够降低被投资公司管理费用率和其他应收款占比,并提高资产周转率,从而降低两类代理成本;持股超过一定比例反而造成两类代理成本上升。险资持股比例变化对保险机构调研次数的影响则从公司治理参与角度印证了以上结论。对倒U型曲线效应的深入分析既有助于深化对机构投资者影响公司绩效的多重效应和机制的认识,同时为在金融机构层面落实金融供给侧结构性改革、增强险资服务实体经济能力提供参考。  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