全文获取类型
收费全文 | 433篇 |
免费 | 24篇 |
专业分类
财政金融 | 87篇 |
工业经济 | 24篇 |
计划管理 | 54篇 |
经济学 | 111篇 |
综合类 | 6篇 |
运输经济 | 3篇 |
旅游经济 | 9篇 |
贸易经济 | 81篇 |
农业经济 | 15篇 |
经济概况 | 67篇 |
出版年
2023年 | 3篇 |
2022年 | 3篇 |
2021年 | 10篇 |
2020年 | 12篇 |
2019年 | 15篇 |
2018年 | 14篇 |
2017年 | 18篇 |
2016年 | 17篇 |
2015年 | 12篇 |
2014年 | 19篇 |
2013年 | 48篇 |
2012年 | 23篇 |
2011年 | 15篇 |
2010年 | 18篇 |
2009年 | 12篇 |
2008年 | 12篇 |
2007年 | 11篇 |
2006年 | 15篇 |
2005年 | 10篇 |
2004年 | 6篇 |
2003年 | 10篇 |
2002年 | 11篇 |
2001年 | 11篇 |
2000年 | 7篇 |
1999年 | 6篇 |
1998年 | 4篇 |
1996年 | 2篇 |
1995年 | 6篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1992年 | 3篇 |
1990年 | 4篇 |
1989年 | 4篇 |
1988年 | 3篇 |
1986年 | 6篇 |
1985年 | 2篇 |
1984年 | 6篇 |
1983年 | 2篇 |
1982年 | 7篇 |
1981年 | 9篇 |
1980年 | 7篇 |
1979年 | 4篇 |
1978年 | 8篇 |
1977年 | 5篇 |
1976年 | 8篇 |
1975年 | 3篇 |
1974年 | 4篇 |
1972年 | 2篇 |
1968年 | 2篇 |
1876年 | 2篇 |
排序方式: 共有457条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
45.
This paper compares commonly used approaches for estimating the relation between long-horizon returns and a predetermined variable X1, such as dividend yields. Specifically, we look at regression of (i) nonoverlapping multiperiod returns on Xt (ii) overlapping multiperiod returns on Xt, (iii) single-period returns on multiperiod Xt, and (iv) single-period returns on Xt and its implied long-horizon regression coefficient. We provide analytical formulae which quantify the efficiency of the estimators used in the various approaches. Using the formulae, as well as Monte Carlo simulations, we demonstrate that the relative efficiency of the estimators used in the various approaches differs remarkably, depending on the dynamic structure of the regressor. of special interest for financial economists, when the regressors are highly autocorrelated, we find that the regressions (ii) (iii), and (iv) provide only marginal efficiency gains above and beyond the nonoverlapping long-horizon regression. 相似文献
46.
47.
48.
Jacob J. van Duijn 《Futures》1981,13(4):264-275
This paper first explains the concept of innovation life cycles and their relationship to leading sectors of the economy. It then briefly describes the relationship between innovation life cycles and long waves in macro-economic development, and presents a chronology and characterisation of the four phases of the long wave derived from Schumpeter. Various phases of the long wave could be expected to have different effects on the propensity to innovate, and this propensity probably varies also between new industries and existing established industries, as well as between product and process innovations. A list ef 80 major innovations is classified by sector and date, to provide a preliminary empirical validation of the hypotheses advanced on the varying influence of the successive phases of the long wave on different types of innovation. Finally, the author's findings are compared with those of Mensch and Schmookler. 相似文献
49.
This paper proposes that managers, having the value of their human capital dependent on the performance of the firm they manage, and being unable to diversify away this risk, are expected to attempt to reduce their employment risk internally by project selection or by income smoothing, intended to stabilize the firm's income stream. An empirical investigation shows that manager-controlled firms exercise ‘income smoothing’ to a greater extent than owner-controlled firms, have relatively lower unsystematic risk and perhaps lower systematic risk. 相似文献
50.