全文获取类型
收费全文 | 23618篇 |
免费 | 554篇 |
专业分类
财政金融 | 4734篇 |
工业经济 | 1858篇 |
计划管理 | 3970篇 |
经济学 | 5171篇 |
综合类 | 275篇 |
运输经济 | 172篇 |
旅游经济 | 370篇 |
贸易经济 | 3764篇 |
农业经济 | 1063篇 |
经济概况 | 2757篇 |
信息产业经济 | 2篇 |
邮电经济 | 36篇 |
出版年
2023年 | 131篇 |
2021年 | 165篇 |
2020年 | 323篇 |
2019年 | 452篇 |
2018年 | 543篇 |
2017年 | 577篇 |
2016年 | 554篇 |
2015年 | 357篇 |
2014年 | 568篇 |
2013年 | 2577篇 |
2012年 | 689篇 |
2011年 | 785篇 |
2010年 | 717篇 |
2009年 | 757篇 |
2008年 | 692篇 |
2007年 | 602篇 |
2006年 | 570篇 |
2005年 | 453篇 |
2004年 | 455篇 |
2003年 | 460篇 |
2002年 | 496篇 |
2001年 | 482篇 |
2000年 | 513篇 |
1999年 | 487篇 |
1998年 | 498篇 |
1997年 | 445篇 |
1996年 | 408篇 |
1995年 | 371篇 |
1994年 | 375篇 |
1993年 | 389篇 |
1992年 | 429篇 |
1991年 | 416篇 |
1990年 | 347篇 |
1989年 | 294篇 |
1988年 | 264篇 |
1987年 | 259篇 |
1986年 | 284篇 |
1985年 | 407篇 |
1984年 | 379篇 |
1983年 | 362篇 |
1982年 | 318篇 |
1981年 | 313篇 |
1980年 | 276篇 |
1979年 | 275篇 |
1978年 | 269篇 |
1977年 | 194篇 |
1976年 | 198篇 |
1975年 | 194篇 |
1974年 | 160篇 |
1973年 | 162篇 |
排序方式: 共有10000条查询结果,搜索用时 93 毫秒
1.
In this paper we will analyze the relationship between the value and duration moments of a cash flow and movements in the yield curve. We will show that for changes in the yield curve which can be related to tn , the 1st order changes in the net present value of a cash flow are linearly dependent on the n + lth duration moments, and that the 2nd order changes are dependent on the sum of duration moments of order 2 n + 1 and 2 n + 2. We will use this relationship to tilt tracking portfolios so as to protect them against specific changes in the yield curve. 相似文献
2.
3.
4.
K.E. Hughes II & J. Kenneth Reynolds 《Journal of Business Finance & Accounting》2001,28(9&10):1351-1386
This study examines whether the uncertainty arising from a firm's exposure to future environmental costs (environmental uncertainty) affects the market's price sensitivity to reported earnings. Specifically, when environmental uncertainty is significantly high, are investors more responsive to reported earnings released by 'high-polluting' firms than reported earnings announced by 'low-polluting' firms within the same industry? The initial impact of Title IV (the acid rain provisions) of the 1990 Clean Air Act Amendments (1990 CAAA) on the US electric utility industry provides the research setting required to isolate the effects of environmental uncertainty while addressing this question. Consistent with theoretical predictions, we find that the earnings response coefficients (ERCs) of high-polluting electric utilities are significantly greater than those of their low-polluting counterparts during a predicted period of elevated environmental uncertainty. In adjoining sample years associated with lower environmental uncertainty, we observe no statistical difference in the magnitude of the ERCs between these two groups. In addition, the study's findings suggest that the magnitude of the ERC is increasing in the firm's exposure to future environmental costs, after controlling for other factors that potentially affect ERCs. 相似文献
5.
Duong Nguyen Suchismita Mishra Arun Prakash Dilip K. Ghosh 《The Journal of Financial Research》2007,30(3):379-398
We examine whether the use of the three‐moment capital asset pricing model can account for liquidity risk. We also make a comparative analysis of a four‐factor model based on Fama–French and Pástor–Stambaugh factors versus a model based solely on stock characteristics. Our findings suggest that neither of the models captures the liquidity premium nor do stock characteristics serve as proxies for liquidity. We also find that sensitivities of stock return to fluctuations in market liquidity do not subsume the effect of characteristic liquidity. Furthermore, our empirical findings are robust to differences in market microstructure or trading protocols between NYSE/AMEX and NASDAQ. 相似文献
6.
Steven N. S. Cheung 《Economic Affairs》1986,6(5):26-29
The speed with which communist China has embuaced markets has surprised Western analysis and observers, But Chinese economic progress will founder in corruption and inefficiency, argues Professor Steven Cheung of the university of Hong Kong, untess she insitutes a well-defined system of private property rights to safeguord investment and stimulate trade. 相似文献
7.
S K Smith 《Journal of economic and social measurement》1986,14(1):37-49
As the elderly population of the United States grows in absolute number and as a proportion of total population, accurate projections of that population become increasingly important for sound policy decisions. Cohort component techniques are typically used for state and local projections of the elderly population, but are often outdated or even nonexistent for many local areas. This paper suggests an alternative approach, based on Medicare data and simple projection techniques. Projections for several base periods and projection horizons are made for all states and for counties in Florida and are compared with actual Medicare enrollment. On the basis of these comparisons it appears that Medicare data and simple projection techniques can produce very useful short-run projections of the elderly population for states and local areas. 相似文献
8.
Joel S. Sternberg 《期货市场杂志》1994,14(1):79-101
9.
The paper seeks to evaluate the evidence on the employment effectsof the collective working-time reductions in Europe over thepast 20 years. While theoretical analyses produce contradictoryassessments, most empirical studies show positive employmenteffects but take insufficient account of these conditions underwhich the reductions in working time were implemented. Theseconditions for the success of collective working-time reductionsinclude an active training policy designed to minimise skillshortages in the labour market, the modernisation of work organisation,wage increases in conjunction with productivity gains and amore equal income distribution. 相似文献
10.
Rudy K. Moenaert William E. Souder Arnoud De Meyer Dirk Deschoolmeester 《Journal of Product Innovation Management》1994,11(1):31-45
Rudy Moenaert, William Souder, Arnoud De Meyer, and Dirk Deschoolmeester report the results of their study of forty technologically innovative Belgian companies to examine the interaction between marketing and R&D. They studied one commercially successful and one commercially unsuccessful technological product innovation project in each participating company and collected data from one marketing and one R&D respondent per project. Communication flows between marketing and R&D are increased under conditions involving formalization of projects, decentralization, positive interfunctional climate, and role flexibility. 相似文献