全文获取类型
收费全文 | 6414篇 |
免费 | 237篇 |
专业分类
财政金融 | 1136篇 |
工业经济 | 463篇 |
计划管理 | 1029篇 |
经济学 | 1242篇 |
综合类 | 95篇 |
运输经济 | 63篇 |
旅游经济 | 130篇 |
贸易经济 | 1231篇 |
农业经济 | 336篇 |
经济概况 | 924篇 |
邮电经济 | 2篇 |
出版年
2023年 | 33篇 |
2021年 | 44篇 |
2020年 | 86篇 |
2019年 | 124篇 |
2018年 | 219篇 |
2017年 | 220篇 |
2016年 | 210篇 |
2015年 | 116篇 |
2014年 | 189篇 |
2013年 | 754篇 |
2012年 | 260篇 |
2011年 | 260篇 |
2010年 | 249篇 |
2009年 | 270篇 |
2008年 | 247篇 |
2007年 | 248篇 |
2006年 | 193篇 |
2005年 | 149篇 |
2004年 | 166篇 |
2003年 | 173篇 |
2002年 | 144篇 |
2001年 | 109篇 |
2000年 | 128篇 |
1999年 | 96篇 |
1998年 | 118篇 |
1997年 | 95篇 |
1996年 | 102篇 |
1995年 | 76篇 |
1994年 | 83篇 |
1993年 | 83篇 |
1992年 | 89篇 |
1991年 | 77篇 |
1990年 | 78篇 |
1989年 | 46篇 |
1988年 | 51篇 |
1987年 | 67篇 |
1986年 | 52篇 |
1985年 | 89篇 |
1984年 | 75篇 |
1983年 | 41篇 |
1982年 | 56篇 |
1981年 | 59篇 |
1980年 | 58篇 |
1979年 | 53篇 |
1978年 | 58篇 |
1977年 | 61篇 |
1976年 | 46篇 |
1975年 | 38篇 |
1974年 | 23篇 |
1969年 | 30篇 |
排序方式: 共有6651条查询结果,搜索用时 31 毫秒
1.
Stephen G. Dimmock William C. Gerken Zoran Ivković Scott J. Weisbenner 《Journal of Financial Economics》2018,127(1):113-135
Differences in accrued gains and investors’ tax-sensitivity induce variation in a capital gains lock-in effect across mutual funds even for the same stock at the same time. Exploiting this variation, we show this effect influences funds’ governance decisions: higher capital gains decrease the likelihood a fund exits prior to contentious votes and increase the likelihood a fund votes against management. Consistent with tax motivation, these findings are concentrated among funds with tax-sensitive investors. Further, high aggregate capital gains across funds holding a stock predict a higher likelihood management loses a vote and a lower likelihood a contentious vote is proposed. 相似文献
2.
Various aspects of sustainable development and quality of life are considered, including the impact of standardization. Particular attention is paid to the study of the role played by standardization in improving environmental protection. In this connection the significance of standardization is shown as a factor of improving the technological potential of an enterprise and the quality of life. Various approaches to methods for assessing the effective impact of standardization on the quality of life are analyzed. 相似文献
3.
The general consensus in the volatility forecasting literature is that high-frequency volatility models outperform low-frequency volatility models. However, such a conclusion is reached when low-frequency volatility models are estimated from daily returns. Instead, we study this question considering daily, low-frequency volatility estimators based on open, high, low, and close daily prices. Our data sample consists of 18 stock market indices. We find that high-frequency volatility models tend to outperform low-frequency volatility models only for short-term forecasts. As the forecast horizon increases (up to one month), the difference in forecast accuracy becomes statistically indistinguishable for most market indices. To evaluate the practical implications of our results, we study a simple asset allocation problem. The results reveal that asset allocation based on high-frequency volatility model forecasts does not outperform asset allocation based on low-frequency volatility model forecasts. 相似文献
4.
Motor carrier safety is an important concern of shippers, carriers, policy makers, consignees, insurance providers, and the motoring public. One aspect of carrier safety that has garnered substantial attention is whether carriers making greater use of owner–operators are more or less safe vis‐à‐vis carriers making greater use of employee drivers. Currently, conflicting theoretical predictions exist regarding the direction of this relationship. In this article, we offer a reconciliation of the alternative theoretical predictions by developing a coherent theory that merges sociological rational choice theory and theory regarding motor carrier safety. We subject our theory to empirical testing by fitting a series of seemingly unrelated regression models to a vector of safety measures tracked as part of the Federal Motor Carrier Safety Administration's Compliance, Safety, and Accountability program. Our results are consistent with our proposed theory of owner—operator safety and provide meaningful theoretical and managerial implications and directions for future research. 相似文献
5.
Gary V. Engelhardt Michael D. Eriksen Nadia Greenhalgh‐Stanley 《Real Estate Economics》2019,47(4):1055-1088
We examine the extent to which parents use housing and shared living arrangements as a form of risk‐sharing for their adult children, using detailed data on children and parents in the Health and Retirement Study for 1998–2012. On average, a young man moving from full‐time to nonemployment raises the likelihood of coresiding with a parent by 1.5 percentage points; moving from full‐time employment to being part‐time employed raises the likelihood of coresiding with a parent by 2 percentage points. The implied elasticity of parental coresidence with respect to the son's income is ‐1.1; for daughters, the elasticity is ‐0.5. 相似文献
6.
The performance of service industries in Canada has been lower than that of good industries over the last four decades, with noticeable exceptions such as for railways and telecommunication carriers. Service industries were less economically (and technically) efficient in that they generated less output value (quantity) per hour worked (level and growth) or per combined unit of labour and capital (multifactor productivity growth) than good industries. The relative output price of services declined slightly over time compared with goods. At the disaggregated level, changing relative output prices were substantial and proved to be an important factor explaining the relative satisfactory economic performance of many service industries despite their low technical performance. Nevertheless, the output share of service industries increased over that period, sustained, mainly, by the growing recourse of all firms to outsourcing of services. 相似文献
7.
Price V. Fishback Shawn Kantor John Joseph Wallis 《Explorations in Economic History》2003,40(3):278-307
We examine the importance of Roosevelt’s “relief, recovery, and reform” motives to the distribution of New Deal funds across over 3000 US counties, program by program. The major relief programs most closely followed Roosevelt’s three Rs. Other programs were tilted more in favor of areas with higher incomes. For all programs spending for political advantage in upcoming elections was a significant factor. Roosevelt’s successful reelections were based on developing specific programs for a broad range of constituents, delivering on his stated goals, but also spending more at the margin for political purposes. 相似文献
8.
9.
Susan Chun Zhu 《The Canadian journal of economics》2004,37(4):1042-1060
Abstract. This paper incorporates Northern product innovation and product‐cycle‐driven technology transfer into the continuum‐of‐goods Heckscher‐Ohlin model. The creation of very skill‐intensive goods induces the North to transfer production of older, less skill‐intensive goods to the South. These relocated goods are the most skill intensive by Southern standards. Hence, product cycles raise the relative demand for skilled workers and thus wage inequality within both regions. This runs contrary to the Stolper‐Samuelson theorem, but accords well with the fact that wage inequality has risen in both Northern and Southern countries. Moreover, product cycles increase income inequality between countries. JEL classification: F1 相似文献
10.
Susan Riley 《金卡工程》2001,(8):34-35,33
目前,评测超5类结构化布线系统的标准,都记录在2000年1月发行的TIA/EIA(电信工业协会/电子工业联合会)568A-5当中。6类系统的标准应在一年左右得到认可。 近来,各公司都开始提出,要想真正得到一个确保网络最大效率的结构化布线系统,唯一的方法就是选择那些在有源信道中经过独立测试的产品, 相似文献