全文获取类型
收费全文 | 11997篇 |
免费 | 219篇 |
专业分类
财政金融 | 2219篇 |
工业经济 | 910篇 |
计划管理 | 1949篇 |
经济学 | 2513篇 |
综合类 | 95篇 |
运输经济 | 60篇 |
旅游经济 | 198篇 |
贸易经济 | 1779篇 |
农业经济 | 568篇 |
经济概况 | 1897篇 |
邮电经济 | 28篇 |
出版年
2020年 | 113篇 |
2019年 | 164篇 |
2018年 | 187篇 |
2017年 | 213篇 |
2016年 | 209篇 |
2015年 | 155篇 |
2014年 | 229篇 |
2013年 | 1090篇 |
2012年 | 324篇 |
2011年 | 335篇 |
2010年 | 285篇 |
2009年 | 299篇 |
2008年 | 322篇 |
2007年 | 272篇 |
2006年 | 257篇 |
2005年 | 232篇 |
2004年 | 192篇 |
2003年 | 221篇 |
2002年 | 219篇 |
2001年 | 211篇 |
2000年 | 216篇 |
1999年 | 243篇 |
1998年 | 216篇 |
1997年 | 197篇 |
1996年 | 191篇 |
1995年 | 179篇 |
1994年 | 177篇 |
1993年 | 206篇 |
1992年 | 190篇 |
1991年 | 191篇 |
1990年 | 159篇 |
1989年 | 171篇 |
1988年 | 150篇 |
1987年 | 141篇 |
1986年 | 137篇 |
1985年 | 248篇 |
1984年 | 237篇 |
1983年 | 216篇 |
1982年 | 198篇 |
1981年 | 190篇 |
1980年 | 202篇 |
1979年 | 196篇 |
1978年 | 160篇 |
1977年 | 175篇 |
1976年 | 143篇 |
1975年 | 134篇 |
1974年 | 125篇 |
1973年 | 128篇 |
1971年 | 93篇 |
1970年 | 94篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
71.
72.
73.
74.
Richard H. Watson Research Assistant Professor 《Technological Forecasting and Social Change》1978,11(2):165-185
Interpretive Structural Modeling (ISM) is a computer based technique for helping small groups develop graphical representations of complex systems. In this paper, the rationale for the use of Interpretative Structural Modeling in activities such as technology assessment is developed and the basic concepts underlying the technique are explored. Several applications of ISM are described and from these experiences some observations are made about the nature and effectiveness of the ISM process and product. ISM was found to provide its users with a systematic and comprehensive method for integrating group judgments in the development of “first-cut‘ structural models. At the same time, however, the technique was found to be relatively inflexible and may, in some instances, inhibit group processes. Possible directions for the development of less rigid methods are suggested. 相似文献
75.
The authors develop and estimate an econometric model of shiftworking for male, manual employees in the food, drink and tobacco industries. In the demand equations TSLS techniques are used to take account of simultaneity in the determination of shiftworking, capital intensity and plant size. Market demand variables are also incorporated in the model to allow for the distinction between ex ante and ex post decisions to work shifts. A demand variable is also incorporated in the supply equations. The results confirm the diverse economic characteristics of these industries, suggesting that inter-industry studies may conceal a considerable degree of variation at MLH level. 相似文献
76.
In recent years there has been a growing number of input-output models of economies ranging in scale from the rural to the national. While offering invaluable insights into the interaction of sectors within an economy, the input-output model suffers from the fact that its coefficient values are altered over time due particularly to technological change. Two of the prominent techniques designed to update these technical coefficients, the RAS and linear programming methods, are compared herein with regard to changes in U.S. national coefficients between 1963 and 1967. Suggestions for improvements to the latter method are outlined. 相似文献
77.
Saphir WH 《Hospital materiel management quarterly》1994,15(3):42-45
Determining the type of inventory management system to use in a hospital depends as much on one's technical abilities as its does with the culture of the institution and the vendor's capabilities. 相似文献
78.
79.
Goldberg JH 《Medical economics》1995,72(17):184-6, 189-92, 198 passim
80.
Goldberg JH 《Medical economics》1995,72(15):161-2, 167-8, 170