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   26994篇
  免费   791篇
  国内免费   2篇
财政金融   4725篇
工业经济   1732篇
计划管理   4858篇
经济学   6350篇
综合类   281篇
运输经济   210篇
旅游经济   377篇
贸易经济   4951篇
农业经济   1213篇
经济概况   2880篇
信息产业经济   3篇
邮电经济   207篇
  2023年   146篇
  2021年   211篇
  2020年   363篇
  2019年   572篇
  2018年   718篇
  2017年   727篇
  2016年   744篇
  2015年   522篇
  2014年   777篇
  2013年   2884篇
  2012年   1051篇
  2011年   1046篇
  2010年   954篇
  2009年   994篇
  2008年   937篇
  2007年   794篇
  2006年   754篇
  2005年   685篇
  2004年   549篇
  2003年   576篇
  2002年   538篇
  2001年   585篇
  2000年   521篇
  1999年   461篇
  1998年   518篇
  1997年   450篇
  1996年   436篇
  1995年   386篇
  1994年   384篇
  1993年   379篇
  1992年   371篇
  1991年   371篇
  1990年   354篇
  1989年   259篇
  1988年   268篇
  1987年   278篇
  1986年   253篇
  1985年   380篇
  1984年   365篇
  1983年   349篇
  1982年   295篇
  1981年   301篇
  1980年   293篇
  1979年   283篇
  1978年   235篇
  1977年   196篇
  1976年   202篇
  1975年   180篇
  1974年   164篇
  1973年   162篇
排序方式: 共有10000条查询结果,搜索用时 343 毫秒
21.
Quality & Quantity - Family firms (FFs) are the backbone of entrepreneurial fabric in many countries. Management of such businesses is complex because of their features: the overlap between...  相似文献   
22.
Review of Quantitative Finance and Accounting - We test the hypothesis that underwriters set higher gross spreads and deeper offer price discounts in seasoned equity offers of firms exhibiting weak...  相似文献   
23.
24.
This paper investigates the impact of competition on an expert firm's incentive to defraud its customers in a credence goods market. Controlling for the competence of car repair shops, their financial situation, and reputational concerns, we use and complement the data set from a nationwide field study conducted by the German Automobile Association that regularly checks the reliability of garages in Germany. We find that more intense competition lowers a firm's incentive to defraud its customers.  相似文献   
25.
Much has changed in the realms of occupational licensing since BJIR last ran a special issue on the subject in 2010. The number of occupations subject to licensing has been growing, the data available to investigate the incidence and effects of licensing have improved immeasurably, and the policy environment surrounding licensing has changed. This issue reflects these changes with eight papers from North America and Europe covering the incidence of licensing, and its effects on wages, inequality, employment, quality of service provision and rent extraction by the organizations who undertake licensing.  相似文献   
26.

We formulate a model in which agents embedded in an exogenous social network decide whether to adopt a new network product or not. In the theoretical part of the paper, we characterize the stochastically stable equilibria for complete networks and cycles. For an arbitrary network structure, we develop a novel graph decomposition method to characterize the set of recurrent communication states, which is a superset of stochastically stable equilibria of the adoption game presented in our model. In the simulation part, we study the contagion process of a network product in small-world networks that systematically represent social networks. We simulate a generalization of the Morris (Rev Econ Stud 67(1):57–78, 2000) Contagion model that can explain the chasm between early adopters and early majority. Our numerical analysis shows that the failure of a new network product is less likely in a highly cliquish network. In addition, the contagion process reaches to steady state faster in random networks than in highly cliquish networks. It turns out that marketers should work with mixed marketing strategies, which will result in a full contagion of a network product and faster contagion rates with a higher probability.

  相似文献   
27.
Past research has reported that learning processes in early stage R&D are either chaotic, or absent. We challenge this finding by elaborating Van de Ven et al.’s trial‐and‐error learning model and explore an alternative conceptualization. We explored the combinations of positive and negative outcomes and action course continuation and modification. We use data gathered in an R&D setting of a 4‐years pre‐competitive knowledge generation project in the Dutch paper and board industry. Whereas the Van de Ven and Polley (1992) approach applied on our data also would lead us to conclude that ‘no learning’ would happen, our decomposed model identified three distinct learning patterns: (1) a virtuous pattern of positive outcomes resulting in continuations of action courses; (2) a vacuous pattern of negative outcomes resulting in modifications of action courses; and (3) a verification pattern of positive outcomes resulting in modifications of action courses. We observed the virtuous and verification patterns during the first 2 years and virtuous and vacuous learning in the second 2 years. These results might be useful for R&D managers since they provide insight into how an early stage R&D project can develop and where managers might intervene and adjust action courses.  相似文献   
28.
An important initial step in accounting is mapping financial transfers to the corresponding accounts. We devised machine-learning-based systems that automate this process. They use word embeddings with character-level features to process transaction texts. When considering 473 companies independently, our approach achieved an average top-1 accuracy of 80.50%, outperforming baselines that exclude the transaction texts or rely on a lexical bag-of-words text representation. We extended the approach to generalizes across companies and even across different corporate sectors. After standardization of the account structures and careful feature engineering, a single classifier trained on 44 companies from 28 sectors achieved a test accuracy of more than 80%. When trained on 43 companies and tested on the remaining one, the system achieved an average performance of 64.62%. This rate increased to nearly 70% when considering only the largest sector.  相似文献   
29.
Contrary to the classic assumptions in the business and human resource (HR) strategy literatures, real‐world organizations often pursue multiple and potentially contradictory performance goals. They may adopt ‘hybrid’ strategies to maximize both differentiation and low cost — leading middle managers to face dilemmas in how to achieve different goals using the same HR practices. We link employee‐level surveys of HR practices to establishment‐level data on service quality, labour efficiency and profitability to examine the effects of HR practices on these outcomes. We find that establishments with greater use of high involvement practices have significantly higher service quality, which mediates the relationship between HR practices and profitability. Findings for labour efficiency are positive, but generally not significant. These findings also have implications for the quality of jobs.  相似文献   
30.
The advent of the Great Recession and the widespread adoption of fiscal austerity policies have heightened concern about inequality and its effects. We examine how the distribution of income in Ireland—a country which experienced one of the most severe economic contractions—has evolved over the years 2008 to 2013. Standard cross‐sectional analysis of the income distribution shows broad stability in the Gini coefficient and in decile shares, with one main exception: the share of the bottom decile fell sharply, with the largest fall in average incomes being for that group. Longitudinal analysis shows that the falls in the average income for the bottom decile were not due to decreasing income for those remaining in the bottom decile, but to falls in income from those initially located in higher deciles. The extent of redistribution through taxes and transfers increased strongly, as measured by the Reynolds‐Smolensky index, which rose from 0.20 before the onset of the crisis to 0.27 in 2013. Analysis indicates that about three‐quarters of this increased redistribution is due to automatic stabilisers and one‐quarter to discretionary policy changes.  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