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   5937篇
  免费   473篇
  国内免费   96篇
财政金融   503篇
工业经济   269篇
计划管理   917篇
经济学   1785篇
综合类   473篇
运输经济   56篇
旅游经济   161篇
贸易经济   681篇
农业经济   985篇
经济概况   675篇
信息产业经济   1篇
  2024年   39篇
  2023年   213篇
  2022年   244篇
  2021年   272篇
  2020年   395篇
  2019年   306篇
  2018年   231篇
  2017年   287篇
  2016年   258篇
  2015年   255篇
  2014年   305篇
  2013年   571篇
  2012年   460篇
  2011年   484篇
  2010年   334篇
  2009年   305篇
  2008年   311篇
  2007年   292篇
  2006年   251篇
  2005年   169篇
  2004年   137篇
  2003年   82篇
  2002年   72篇
  2001年   62篇
  2000年   38篇
  1999年   20篇
  1998年   17篇
  1997年   23篇
  1996年   17篇
  1995年   12篇
  1994年   7篇
  1993年   5篇
  1992年   8篇
  1991年   7篇
  1990年   2篇
  1989年   1篇
  1987年   1篇
  1985年   1篇
  1984年   2篇
  1983年   5篇
  1982年   2篇
  1981年   2篇
  1980年   1篇
排序方式: 共有6506条查询结果,搜索用时 125 毫秒
31.
This paper examines whether real estate firms can avoid price competition when properties in the vicinity are priced by allies. An oligopoly model with differentiated products generally suggests that real estate firms engage in price competition with their spatially closest rivals. Yet, they can raise property prices when the market share of their allies increases. To test this prediction, a spatial autoregressive model with spatial autoregressive disturbances, including a share of allies in the vicinity, is estimated using data on the prices of residential condos in central Tokyo, Japan. The model prediction is supported by the empirical results. In the data set, the magnitude of the market share on property prices increases with the expansion of the size of the spatial market.  相似文献   
32.
基于引力模型,结合社会网络分析法的凝聚子群分析,对31个省(区、市)的创新产出空间联系进行探究,研究发现:我国省域创新产出空间联系主要集中于京津冀和长三角一带,呈现出严重的分布不均状况,具有较强的区域集中性和空间依赖性;北京、天津、上海、浙江、江苏作为区域创新产出引力较强的节点省(区、市),对周边区域的创新产出具有较强的辐射作用;总体来看,省域创新产出空间联系并没有形成贯穿东西南北的交叉网状结构,中心省(区、市)数量较少且分布不均,辐射范围有限。基于此,提出加大区域创新投入、减少区域创新产出联系的政策性障碍、营造区域创新产出联系的良好环境等政策建议。  相似文献   
33.
Family influences on economic performance are investigated. In particular, sibship sex composition is related to hourly wages using data from the National Longitudinal Survey of Youth 1979. The wages of men are increasing in the proportion of siblings who are brothers, but the wages of women are insensitive to sibling gender. Nonwage outcomes are generally unaffected. Contrasts by age structure and demographic group are also presented. The analysis addresses econometric challenges like the endogeneity of fertility and selection into the workforce. In addition, mechanisms such as labour market interactions, human capital investment and role model effects are documented. A questionnaire on job search indicates a same-gender bias in the use of brothers and sisters in obtaining employment. Developmental and psychological assessments suggest that brothers may be associated with worse childhood home environments and more traditional family attitudes among women. The findings are policy relevant and contribute to an understanding of gender differences and earnings inequality.  相似文献   
34.
This paper examines the return and volatility spillovers between the foreign exchange and bond markets of India using a bivariate asymmetric BEKK-GARCH (1,1) model for the period 4 April 2005 to 31 March 2017. We find the evidence of bidirectional return and volatility spillovers with asymmetric effects between these two markets. The spillovers are evidenced even during the periods when foreign portfolio investments in the Indian bond markets were relatively low suggests the existence of strong inter-linkages between both the markets.  相似文献   
35.
This study investigates how pesticide use by neighbouring farmers affects a given farmer's pesticide use. Although it is common knowledge that pesticide use has spatial externalities, few empirical economic studies explicitly analyse this issue. Applying a spatial panel econometric model to plot‐level panel data for Bohol, Philippines, this study shows that pesticide use, especially for herbicides, is spatially correlated, although there is no statistically significant spatial correlation in unobserved shocks. This implies that farmers apply pesticides by referring to the behaviour of neighbouring farmers rather than responding directly to the intensity of their own infestation.  相似文献   
36.
京津冀地区是全国雾霾污染的重灾区。本文分析了京津冀地区13个城市的雾霾污染空间相关性,发现其具有显著的空间溢出效应,呈现出“高—高”型集聚和“低—低”型集聚的特征。基于京津冀地区13个城市2000—2012年的面板数据,使用三种类型空间权重矩阵构建空间杜宾模型发现:京津冀雾霾污染与产业结构、城镇化水平显著相关;产业结构与其呈“倒U型”曲线,目前产业结构和城镇化水平对自身及其邻近地区的雾霾污染具有明显的加重作用;城镇化水平对邻近地区雾霾污染具有双向效应。产业结构调整优化和城镇化水平质量的提高会缓解京津冀雾霾污染,实际人均GDP、对外贸易依存度、FDI、人口密度等也会对京津冀地区及其周边地区的雾霾污染产生影响。  相似文献   
37.
This paper provides the first empirical evidence of the distributional effects of subsidies for the purchase of alternative vehicles based on an extended version of Hausman's exact consumer surplus. In consistence with economic theory, we estimate changes in household welfare, inequality, and social welfare resulting from different reforms. First, we find that an additional tax on conventional fuel is regressive. However, returning the additional tax revenue via lump-sum transfers can alleviate this effect. Second, when the additional revenue is also used to finance subsidies for electrical and compressed natural gas (CNG) vehicles, households that own such vehicles experience welfare gains. However, this policy also increases income inequality and decreases social welfare.  相似文献   
38.
Food safety is a very important topic in China. We investigate Chinese consumers’ preferences and willingness to pay (WTP) for food traceability using a choice experiment. Given that consumers’ trust in the food system may affect their preferences and WTP, we also assess the interaction between consumers’ trust in government’s supervision of food safety and food labels and consumers’ preferences for traceable food products. Using data collected from a choice experiment on Fuji apples in a face-to-face survey in six Chinese cities, the results show that (i) consumers are willing to pay for traceable food but their valuations can differ upon the degree of their trust in government’s supervision of food safety and food labels; (ii) consumers are willing to pay for traceability with strong evidence of preference heterogeneity; (iii) government is not the most trusted safety inspection and certificate authority as found in prior studies using animal food products in China.  相似文献   
39.
Spatial models, such as the Besag, York and Mollie (BYM) model, have long been used in epidemiology and disease mapping. A common research question in these subjects is modelling the number of disease events per region; here the BYM models provides a holistic framework for both covariates and dependencies between regions. We use these tools to assess the relative insurance risk associated with the policyholders geographical location. A Bayesian modelling approach is presented and an elastic net is used to reduce the large number of possible geographic covariates. The final inference is performed using Integrated Nested Laplace Approximation. The model is applied to car insurance data from If P&C Insurance together with spatially referenced covariate data of high resolution, provided by Insightone. The entire analysis is performed using freely available R-packages. Including spatial dependence when modelling the number of claims significantly improves on the result obtained using ordinary generalised linear models. However, the support for adding a spatial component to the model for claims cost is weaker.  相似文献   
40.
This article offers a bottom‐up contribution to the fixity–motion literature. It aims to unravel the apparent contradiction of real estate spatial fixity in Spain, which is portrayed both as a barrier to accumulation and as a unique source of investment by different capitalist actors. Empirically, it describes the shifts in real estate ownership and changes in profit‐making strategies that have taken place across the real estate sector during the crisis years, and the role of the state in these shifts. The article asserts that the idea of spatial fixity representing a spatial barrier for accumulation does not necessarily apply in the Spanish case. It further claims that the tensions in capital circulation through real estate are not only to be found in the action of time, but in different state strategies pursued by various actors. The opposing representations of fixity are the result of state regulation of interest rates, taxation and risk weighting. The state also increasingly promotes land rents as a source of liquidity creation.  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