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   134485篇
  免费   3869篇
  国内免费   14篇
财政金融   25776篇
工业经济   11025篇
计划管理   21642篇
经济学   29683篇
综合类   1541篇
运输经济   922篇
旅游经济   2566篇
贸易经济   21907篇
农业经济   6226篇
经济概况   16821篇
信息产业经济   8篇
邮电经济   251篇
  2021年   852篇
  2020年   1650篇
  2019年   2428篇
  2018年   2349篇
  2017年   2568篇
  2016年   2730篇
  2015年   2132篇
  2014年   3465篇
  2013年   15505篇
  2012年   4259篇
  2011年   4221篇
  2010年   3783篇
  2009年   4374篇
  2008年   4015篇
  2007年   3331篇
  2006年   3665篇
  2005年   3641篇
  2004年   3175篇
  2003年   2865篇
  2002年   2848篇
  2001年   2561篇
  2000年   2360篇
  1999年   2219篇
  1998年   2104篇
  1997年   2108篇
  1996年   1988篇
  1995年   1987篇
  1994年   1968篇
  1993年   1931篇
  1992年   1942篇
  1991年   1876篇
  1990年   1742篇
  1989年   1578篇
  1988年   1506篇
  1987年   1522篇
  1986年   1604篇
  1985年   2400篇
  1984年   2278篇
  1983年   2085篇
  1982年   1937篇
  1981年   1916篇
  1980年   1872篇
  1979年   1800篇
  1978年   1601篇
  1977年   1583篇
  1976年   1358篇
  1975年   1246篇
  1974年   1165篇
  1973年   1156篇
  1972年   866篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
101.
Conflict between favorites and underdogs is an everyday phenomenon. Research suggests that people support the underdog as they see a reflection of their own self in the person at a disadvantaged position. Two studies examine the effect of underdog brand biography in two different contexts. Study 1 provides support for the notion that underdog brand biographies for established brands elicit stronger consumer response than underdog brand biography for new brands. In study 2, a 2 × 2 between-subjects experimental design measured respondents’ reaction toward an underdog brand biography over a top dog brand biography under conditions of public versus private consumption. Results demonstrate that consumers exposed to underdog brand biographies in the private consumption condition will be more likely to respond favorably than when they are exposed to the public consumption condition. Based on the results it is suggested that advertisers make use of underdog brand biographies in case of established brands. Furthermore, choice of underdog brand narratives is likely to bring positive results under conditions of private consumption.  相似文献   
102.
The electric bike (e-bike) is emerging as a new sustainable transport mode in Norway and has the potential to lead to increased cycling among the population. However, little is known about psychosocial determinants of e-bike use. The aim of the study was to examine the role of normative and environmental beliefs, the perceived attributes of e-bikes, and innovativeness and demographical factors related to e-bike use in a Norwegian sample. An online survey was used to collect data from 910 respondents, including both e-bike users (252) and non-users (658). The respondents were recruited via a commercial panel (response rate 42.04%) and a Facebook post. A structural equation modeling analysis was used to analyze the data. The structural model had a good fit to the data. The results showed that attitudes towards e-bike use followed by innovativeness were the most important predictors of e-bike use. The normative processes measured within the Norm Activation Model activated positive attitudes towards e-bike use, which in turn predicted e-bike use. There was a negative relationship between e-bike and conventional bike use, while a positive relationship was found between car and e-bike use. The results are discussed with regard to their implications for interventions aiming to promote e-bike use.  相似文献   
103.
The unexpected introduction and spread of COVID-19 has presented significant challenges for every aspect of Canadian society. Although the food and agricultural sector is positioned better than most, there are many risks that will need to be managed in the coming months. The suite of Federal-Provincial-Territorial Business Risk Management (BRM) programs delivered under the Canadian Agricultural Policy framework are meant to assist farmers in managing risks; however, there are no corresponding specialized programs for agribusinesses. The underlying structure of the BRM program was developed decades ago and certainly not with any thought to the possibility of a global pandemic. This article considers to what extent the BRM program and, more broadly, government programming will assist farmers in managing new risks. By default, the article is speculative in nature given that we are currently at the onset of the pandemic in Canada.  相似文献   
104.
This paper re-examines the stochastic properties of U.S. state real per capita personal income, using new panel unit-root procedures. The new developments incorporate non-linearity, asymmetry, and cross-sectional correlation within panel-data estimation. Including nonlinearity and asymmetry finds that 43 states exhibit stationary real per capita personal income whereas including only nonlinearity produces 42 states that exhibit stationarity. Stated differently, we find that two states exhibit nonstationary real per capita personal income when considering nonlinearity, asymmetry, and cross-sectional dependence.  相似文献   
105.
Using a sample splitting approach that does not impose an exogenous quadratic term, we examine the effect of financial development on economic growth in sub-Saharan Africa by allowing the link to be mediated by the level of institutions. Our findings reveal a disproportionate growth-enhancing effect of finance, given countries’ distinct level of institutional quality. More specifically, when the International Country Risk Guide-based measure of institutions is used as the threshold variable, below the optimal level of institutional quality, financial development does not significantly promote economic growth. For countries with institutional quality above the threshold, higher finance is associated with growth. However, when institutions are measured by World Governance Indicators proxy, we find a significant effect of financial development, irrespective of whether a country is below or above the threshold. Interestingly, the growth-enhancing effect of finance is greater for low-institution countries relative to high-institution countries. Thus, through its ability to provide some crucial roles, the well-developed financial sector may also perform the function of sound institutions in influencing economic growth.  相似文献   
106.
Price reviews are a potentially costly activity. A significant fraction of unchanged prices may stem from firms not reviewing prices, rather than from obstacles to changing prices per se, such as menu costs. In this paper, we disentangle these two causes of price stickiness by estimating an inflated ordered probit model on a panel of French manufacturing firms. The results point to a low frequency of price reviews, suggestive of the relevance of information costs as a determinant of the observed price stickiness. In view of the “inattentive producers” literature, pointing that the source of price rigidity matters, this is suggestive of a large real effect of monetary policy.  相似文献   
107.
We develop an open-economy New Keynesian Model with foreign exchange (FX) intervention in the presence of a financial accelerator and shocks to risk appetite in international capital markets. We obtain closed-form solutions for optimal monetary and FX intervention policies assuming the central bank cannot commit to future policies, and we compare the solution to that under policy commitment. We show how FX intervention can help reduce the volatility of the exchange rate, of inflation, and of the output gap, thus mitigating welfare losses associated with shocks in the international capital markets. We also show that, when the financial accelerator is strong, there is a risk of indeterminacy (self-fulfilling currency and inflation movements) although FX intervention can reduce this risk and thus reinforce the credibility of the inflation targeting regime. Model simulations match well the impact of a VIX shock obtained by local projections on a panel of inflation targeting emerging markets.  相似文献   
108.
109.
We examine the market reaction to charitable pledges by individual blockholders of public firms. As this philanthropy may signal a weakening preference for wealth maximization and may be indicative of distraction or relaxed monitoring, these agency costs may overwhelm any reputation benefits. We find decreased firm value and lower pay-for-performance sensitivity, the effects of which are most severe where monitoring needs are high, the blockholder is a director, or when the firm has ex ante high corporate social responsibility ratings. Our results are robust to controlling for prior charitable foundation involvement, busy director–blockholders, dual-class share structures, blockholder exit, and pre-pledge firm sentiment.  相似文献   
110.
Using data on job approval ratings of governors, U.S. senators, and the president, we find that firms located in states with high approval ratings outperform firms located in states with low approval ratings by .64% per month. Furthermore, this relationship is stronger when investors are actively involved in politics, when local politicians are closer to the center of political power, for small firms that have a larger proportion of local investors, and for financially strong areas where investors are ready to execute investments in local stocks. Overall, our study shows that investors’ political sentiment is important in determining stock returns.  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