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   374篇
  免费   15篇
财政金融   62篇
工业经济   13篇
计划管理   58篇
经济学   131篇
运输经济   7篇
贸易经济   69篇
农业经济   17篇
经济概况   32篇
  2024年   1篇
  2023年   8篇
  2022年   1篇
  2021年   9篇
  2020年   14篇
  2019年   11篇
  2018年   12篇
  2017年   21篇
  2016年   8篇
  2015年   17篇
  2014年   20篇
  2013年   59篇
  2012年   24篇
  2011年   24篇
  2010年   22篇
  2009年   17篇
  2008年   21篇
  2007年   19篇
  2006年   5篇
  2005年   13篇
  2004年   6篇
  2003年   8篇
  2002年   2篇
  2001年   5篇
  2000年   4篇
  1999年   5篇
  1998年   3篇
  1997年   3篇
  1996年   2篇
  1995年   1篇
  1992年   2篇
  1991年   2篇
  1990年   4篇
  1989年   2篇
  1988年   2篇
  1987年   1篇
  1986年   1篇
  1985年   1篇
  1984年   2篇
  1983年   1篇
  1981年   1篇
  1977年   1篇
  1976年   2篇
  1975年   1篇
  1974年   1篇
排序方式: 共有389条查询结果,搜索用时 15 毫秒
381.
Professional salaries in Chile are here explained on the basis not only of traditional human capital variables but also of variables indicative of other cognitive and noncognitive skills. As might be expected, college entrance scores (SAT), our measure of advanced cognitive skills, are found to impact strongly and nonlinearly on salaries. More surprisingly, ranking in one's high school graduation class raises one's salary 10 years later by the equivalent of one year of additional experience, suggesting that ranking stands for a more permanent noncognitive skill such as effort or self‐discipline. As is typically found, women earn less than men, but, to our surprise, they also have lower asking salaries than men.  相似文献   
382.
In this paper, we survey the most recent advances in supervised machine learning (ML) and high-dimensional models for time-series forecasting. We consider both linear and nonlinear alternatives. Among the linear methods, we pay special attention to penalized regressions and ensemble of models. The nonlinear methods considered in the paper include shallow and deep neural networks, in their feedforward and recurrent versions, and tree-based methods, such as random forests and boosted trees. We also consider ensemble and hybrid models by combining ingredients from different alternatives. Tests for superior predictive ability are briefly reviewed. Finally, we discuss application of ML in economics and finance and provide an illustration with high-frequency financial data.  相似文献   
383.
In this article we portray and unpack the fabric of urban expansion in contemporary Luanda. In doing so, we examine interdependencies and complementarities between the organization of oil extraction off the coast of Angola, the emergence of particular modalities of modernist city planning for the expansion of its capital city, and the proliferation of cement blocks in the making of new urban forms throughout its burgeoning peripheries. By showing how urban development has unfolded through the interconnected realization of multiple kinds of systematizing blocks—namely oil blocks, city blocks and cement blocks—we analyse key material components in the production of new markets and urban spaces in the Angolan capital. By tracing forms of capitalism and modularity in the making of contemporary Luanda, we develop the concept of blocos urbanism to draw attention to modes of standardization and the production of legibility in contemporary processes of urbanization. Through this study, we aim to contribute to the conceptual apparatus for deciphering our global urban condition.  相似文献   
384.
Quality & Quantity - Income transfer programs are important public policies in fighting poverty and reducing inequality. However, such a strategy is often criticised as being ineffective, as...  相似文献   
385.
In this paper, we aim to determine the importance of psychological pressure on performance in sequential tournaments. We make use of penalty shootouts in soccer and test the presence of first-mover advantage. Shootouts in soccer is a formidable framework because it is a natural experiment where teams compete in a sequence whose order is determined by the random outcome of a coin toss. Using data from all 663 penalty shootouts in all major competitions since first implemented in 1970, we fail to identify statistically significant differences in winning probabilities for teams kicking first or second in the shootout sequence.  相似文献   
386.
Home gardens have been an integral part of the recent food-based interventions aimed at stimulating changes in dietary patterns and improving nutrition. However, evidence of their effects on food security, dietary quality, child anthropometry and incomes is limited, particularly among vulnerable populations groups. Using panel data from a sample of approximately 1900 households from vulnerable population groups in Odisha, India, difference-in-differences and other econometric techniques, we analyse the effects of home gardens on food security, dietary quality, child anthropometry and income. On average, home gardens contribute to better household food security, higher dietary quality of men and women but do not contribute to higher children's dietary quality and anthropometry. Also, home gardens increase monthly per adult equivalent incomes by 37% and reduce the prevalence of poverty by 11.7 percentage points. Quantile regression results suggest that home gardens enhance food security and incomes in all quantiles, but richer farmers benefit more than poorer farmers. Overall, home gardens can enhance household food security, dietary quality of men and women, and income gains among vulnerable farming population groups, but they may not suffice to improve child dietary quality and anthropometry.  相似文献   
387.
We examine the role of country-level legal investor protection (i.e., shareholder and creditor protection) on firm investment–cash flow sensitivity (ICFS). Using underexplored research data on investor protection across 21 countries and working with a conservative empirical design, we extend prior literature on the relation between investor protection and ICFS and provide new evidence on how these country-level attributes interact to explain a firm's ICFS. We find that either the strong legal protection of minority shareholders or the strong legal protection of creditors reduces the sensitivity of investment to internal cash flow. However, in countries with strong levels of both minority shareholder and creditor protection, ICFS increases. Our results remain robust after controlling for several alternative explanations. The results support the argument that overregulation arises when policymakers increase investor protection at levels that lead firms to avoid external sources of finance, hampering firm investment. Our findings suggest that countries face a regulatory trade-off such that increasing investor protection (either shareholder or creditors protection) enhances financial markets efficiency, but excessive regulation can indeed lead to financial markets inefficiencies.  相似文献   
388.
Storytelling can arouse consumers' emotions and affect purchasing behavior through desires and attitudes. While the marketing literature discusses storytelling, there is a lack of consensus because of the diverse conceptual and operational definitions used. To untangle the complexities and consolidate the fragmented knowledge about storytelling in marketing, this research examines how the marketing literature has addressed the influence of storytelling on consumers' purchasing behavior. The findings aid in understanding how the topic has been discussed from a marketing perspective in consumer behavior studies. Through a systematic literature review using a bibliometric analysis, we demonstrate that the marketing literature features four strands about the uses of storytelling to influence consumers' purchasing behavior. First, storytelling stimulates the consumer's identification with the brand. Second, storytelling allows consumers to experience emotional value. Third, storytelling supports engagement behaviors. Finally, storytelling has a downside in that it also propagates harmful speech. This study concludes with a roadmap for future research about how storytelling impacts consumers' purchasing behavior.  相似文献   
389.
Annals of Finance - We study the behavior of permutation-weighted portfolios, portfolios with weights that are proportional to a permutation of the current market weights. For markets with more...  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