全文获取类型
收费全文 | 28781篇 |
免费 | 347篇 |
专业分类
财政金融 | 4903篇 |
工业经济 | 1693篇 |
计划管理 | 4629篇 |
经济学 | 6514篇 |
综合类 | 618篇 |
运输经济 | 86篇 |
旅游经济 | 191篇 |
贸易经济 | 6422篇 |
农业经济 | 534篇 |
经济概况 | 2909篇 |
信息产业经济 | 46篇 |
邮电经济 | 583篇 |
出版年
2023年 | 74篇 |
2021年 | 96篇 |
2020年 | 162篇 |
2019年 | 240篇 |
2018年 | 2583篇 |
2017年 | 2379篇 |
2016年 | 1559篇 |
2015年 | 259篇 |
2014年 | 372篇 |
2013年 | 1263篇 |
2012年 | 813篇 |
2011年 | 2375篇 |
2010年 | 2157篇 |
2009年 | 1882篇 |
2008年 | 1841篇 |
2007年 | 2196篇 |
2006年 | 374篇 |
2005年 | 638篇 |
2004年 | 725篇 |
2003年 | 841篇 |
2002年 | 541篇 |
2001年 | 307篇 |
2000年 | 313篇 |
1999年 | 248篇 |
1998年 | 270篇 |
1997年 | 223篇 |
1996年 | 255篇 |
1995年 | 199篇 |
1994年 | 186篇 |
1993年 | 188篇 |
1992年 | 209篇 |
1991年 | 199篇 |
1990年 | 180篇 |
1989年 | 142篇 |
1988年 | 124篇 |
1987年 | 123篇 |
1986年 | 159篇 |
1985年 | 229篇 |
1984年 | 176篇 |
1983年 | 164篇 |
1982年 | 136篇 |
1981年 | 156篇 |
1980年 | 146篇 |
1979年 | 153篇 |
1978年 | 149篇 |
1977年 | 97篇 |
1976年 | 106篇 |
1975年 | 87篇 |
1974年 | 86篇 |
1973年 | 75篇 |
排序方式: 共有10000条查询结果,搜索用时 24 毫秒
81.
Consumers act out roles throughout their lives. Marketers assist in this role playing by providing the wardrobes, props, and sets in the form of products and services. They also help people understand acceptable role behavior by portraying roles in their communication programs. Consumers assume new roles as they age. This article is designed to enhance understanding of the often-ignored roles that accompany aging and provides examples of and suggestions for effective marketing for these role transitions. 相似文献
82.
The paper extends Manning's model on education and balanced growth to include labour immigration. Each immigration unit is assumed to consist of one skilled worker and some unskilled members. The optimal immigration policy which maximizes the per capita steady-state consumption of the host country is derived. We show that optimal immigration policy can reduce the steady-state skilled labour ratio. More interesting still, contrary to the widespread belief that immigration of skilled workers hurts local skilled workers, it is the unskilled local workers whose interests are threatened by optimal immigration policy. 相似文献
83.
The introduction of traffic management schemes has been one response of the National Parks to the problem of ever-increasing car-borne visitors and the consequent damage caused to the rural environment. By reviewing these schemes and by determining and explaining attitudes towards one particular traffic management experiment, the paper aims to deduce lessons for future policy. The analysis, based on two visitor surveys, suggests that the likelihood of success is improved when schemes are integrated, containing both ‘carrot’ and ‘stick’ elements. Since public perceptions are also found to be pivotal to its success, appropriate marketing of a scheme is vital. The paper concludes, however, that to achieve the fundamental objective of greater accessibility with less mobility, a more wide-ranging marketing effort is required intended to engender a sea change in attitude towards both the car and public transport. 相似文献
84.
85.
The paper deals with effects of price changes on measurement of poverty. It is shown that there are situations, when prices and nominal incomes change, a higher nutritional intake or an increase in commodity consumption of the poor can be associated with higher poverty gaps and a higher poverty index of the society. A positive relationship of this kind is quite counter-intuitive in the context of poverty measurement. This is caused by the adjustment of the poverty line and/or incomes of one situation by the prices of the other for the purpose of comparison.
相似文献86.
87.
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
88.
This paper explores the methodology of sectoral productivity growth measurement within the framework of input-output analysis. A method which ensures that sectoral productivity growth rates are consistent with productivity growth rates for the economy as a whole (as well as allowing for external trade) is suggested. New estimates are presented on total factor productivity in UK agriculture using a Tornqvist index procedure. In addition, new estimates of agricultural labour productivity growth are presented, taking account not only of labour employed in agriculture but also of labour employed in ancillary industries on the supply side. The empirical results confirm that part of the labour previously employed on farms has shifted “upstream” to industries providing agriculture with fertilises, machinery and other inputs. 相似文献
89.
90.