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   370263篇
  免费   14450篇
  国内免费   2030篇
财政金融   53486篇
工业经济   23405篇
计划管理   72900篇
经济学   81338篇
综合类   30089篇
运输经济   4650篇
旅游经济   5849篇
贸易经济   58232篇
农业经济   22630篇
经济概况   33660篇
信息产业经济   72篇
邮电经济   432篇
  2023年   3290篇
  2022年   6366篇
  2021年   10708篇
  2020年   9461篇
  2019年   8670篇
  2018年   8655篇
  2017年   11080篇
  2016年   9366篇
  2015年   9837篇
  2014年   14781篇
  2013年   31922篇
  2012年   26158篇
  2011年   27768篇
  2010年   26015篇
  2009年   24263篇
  2008年   23116篇
  2007年   21828篇
  2006年   20238篇
  2005年   16674篇
  2004年   8986篇
  2003年   7540篇
  2002年   6350篇
  2001年   5826篇
  2000年   4710篇
  1999年   3889篇
  1998年   3252篇
  1997年   2842篇
  1996年   2424篇
  1995年   2109篇
  1994年   1985篇
  1993年   1964篇
  1992年   1829篇
  1991年   1650篇
  1990年   1476篇
  1989年   1268篇
  1988年   1174篇
  1987年   1166篇
  1986年   1150篇
  1985年   1499篇
  1984年   1474篇
  1983年   1299篇
  1982年   1123篇
  1981年   1148篇
  1980年   1022篇
  1979年   974篇
  1978年   818篇
  1977年   759篇
  1976年   584篇
  1975年   556篇
  1974年   506篇
排序方式: 共有10000条查询结果,搜索用时 375 毫秒
51.
We investigate the impact of housing wealth, credit availability and financial distress on college enrolment decisions. We find that housing wealth is negatively related to enrolment in public schools and positively related to enrolment in private schools. This evidence suggests that, on average, students substituted away from private schools towards public institutions during the recent financial crisis.  相似文献   
52.
In this paper we explore the micro-level determinants of conformity. Members of the social networking service Facebook express positive support to content on the website by clicking a Like button. We set up a natural field experiment to test whether users are more prone to support content if someone else has done so before. To find out to what extent conformity depends on group size and social ties we use three different treatment conditions: (1) one stranger has Liked the content, (2) three strangers have Liked the content, and (3) a friend has Liked the content. The results show that one Like from a single stranger had no impact. However, increasing the size of the influencing group doubled the probability that subjects expressed positive support. Friendship ties were also decisive. People were, on average, four times more likely to press the Like button if a friend, rather than a stranger, had done so before them. The existence of threshold effects in our experiment clearly shows that both group size and social proximity matters when opinions are shaped.  相似文献   
53.
This study maps the General Reporting Initiative (GRI) relations for a set of global enterprises. Enterprise interrelationships are built using the Mutual Information (MI) of the data reported by enterprises. From the MI topology, we describe interrelationships among the enterprises using chord diagrams to represent the inter- and intra-connectivity between geographical regions and economic sectors globally, by continent and country. Detailed maps are presented for European and Asian regions/sectors, including the relationship between Europe and Asia’s top reporting countries. Our findings reinforce previous research regarding the role of Europe as a driver of sustainability and its influence worldwide. We also determined that Spain is a major player in Europe and that Northern Europe does not have the assumed leading role mentioned in related studies. Eastern Asia is, by far, the leader of the region, and the GRI maps demonstrate the preponderant role of China in the region and the minimal role of India. MI topology maps outline the behavior of the economic sectors, for all the studied regions. Furthermore, a measure that relates the inter- to intra-connections is presented to describe the internal an external relationships among regions/sectors.  相似文献   
54.
Organizations increasingly depend on employee efforts to innovate. However, the quality of relationships between leaders and employees may affect the recognition that employees receive for their innovative work behaviors. Drawing from a social cognition perspective, we tested a model in which leader–member exchange (LMX) moderates the impact of employee innovative work behavior on supervisory ratings of employee performance. Results from two multisource studies combining self, colleague, and supervisor ratings consistently showed that employees receive more favorable performance ratings by engaging in innovative work behavior when they have high‐quality LMX relationships. Moreover, we found that this interactive relationship was mediated by leader perceptions of innovative employee efforts, providing support for a moderated mediation model. Implications for the literatures on performance appraisal, LMX, and innovation are discussed.  相似文献   
55.
In this paper, we empirically investigate the relationship between informal sector employment and micro-level socio-demographic characteristics, political acts and attitudes, and individual norms. Using self-reported individual micro-level data from the World Values Survey for seven developing countries (China, Ecuador, Egypt, Mexico, Peru, South Africa and Yemen), our cross-country regressions and principal component analysis reveal that socio-demographic characteristics of individuals are strong predictors of their informal sector employment. Our estimations further document that individual preferences for an economically strong, interventionist and egalitarian state and confidence in state and political institutions are positively and significantly correlated with informal sector employment, whereas variables associated with confidence in free market institutions and support for competition are negatively and significantly correlated with informal sector employment. We also show that individuals who participate either actively or inactively in peaceful and lawful political processes are significantly less likely to work in the informal sector. Finally, we document that individual norms, such as religiosity and tax morale, are negatively correlated with informal sector employment. Throughout our analysis, instead of having to rely on ad-hoc informality categorizations of third parties, we base our measurement of informal sector employment directly on the self-evaluation of individuals, who have the best information on the degree of their informality.  相似文献   
56.
This paper unpacks the dominant conceptualizations of talent management (TM) in contemporary academic publications, and considers these in relation to the increasingly important workforce population of skilled international migrants. It postulates that TM approaches are generally built from a relatively narrow human capital-based perspective wherein organizations focus on readily accessible and immediate skills, ignoring the longer term strategic potential of the international workforce of skilled migrants, particularly for multinational enterprises and other international organizations. Through a series of propositions, the paper highlights how organizations, in strategically using a more comprehensive TM lens rather than a human capital lens in approaching the TM of skilled migrants, could benefit from improved HRM performance over time. It also proposes a research agenda, by which future studies might test, explore, and further develop understanding on a more strategic utilization of skilled migrants in organizations.  相似文献   
57.
This is the first study to document evidence of technical trading effectiveness at firm level in the Chinese A-share market by investigating the relationship between excess profits of technical trading rules and firm-specific characteristics. Our results reveal that firms with higher excess profits from technical trading have more noise traders and higher institutional ownership and that those firms tend to be growth firms with lower liquidity and higher firm-specific uncertainty. Further analysis shows that the profitability of technical trading rules is unsustainable and the excess profits of the highest technical trading profit quintile portfolio disappear in the following year.  相似文献   
58.
We use a unique firm-level data set including 9000 companies from 26 European Union countries covering four different sectors to take a close look at the relationship between online exports and productivity. The online exporter productivity premium is estimated using different techniques (ordinary least squares, quantile regressions and robust estimation). Results consistently indicate that the estimated online exporter productivity premium is statistically different from zero, positive and significant from an economic point of view. European online exporters, according to these results, are approximately 2% more productive than non-online exporters. Productivity differences between firms could be related to variables that are not included in the empirical model. More research would be needed to address this issue in the future.  相似文献   
59.
60.
This paper presents an approach to assessing the efficacy of public spending on research and development in state programs. At present, there is a need to develop a unified approach to the analysis and evaluation of the efficacy of such spending from the perspective of participants in state programs (federal executive bodies). The proposed approach does not allow evaluating the efficacy of public spending on the development of research areas assigned to the authors.  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