全文获取类型
收费全文 | 15953篇 |
免费 | 314篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 3397篇 |
工业经济 | 1166篇 |
计划管理 | 2665篇 |
经济学 | 3583篇 |
综合类 | 194篇 |
运输经济 | 67篇 |
旅游经济 | 232篇 |
贸易经济 | 2408篇 |
农业经济 | 799篇 |
经济概况 | 1680篇 |
邮电经济 | 77篇 |
出版年
2020年 | 164篇 |
2019年 | 226篇 |
2018年 | 249篇 |
2017年 | 303篇 |
2016年 | 283篇 |
2015年 | 195篇 |
2014年 | 310篇 |
2013年 | 1438篇 |
2012年 | 386篇 |
2011年 | 413篇 |
2010年 | 359篇 |
2009年 | 424篇 |
2008年 | 371篇 |
2007年 | 382篇 |
2006年 | 348篇 |
2005年 | 315篇 |
2004年 | 288篇 |
2003年 | 338篇 |
2002年 | 307篇 |
2001年 | 311篇 |
2000年 | 356篇 |
1999年 | 292篇 |
1998年 | 305篇 |
1997年 | 312篇 |
1996年 | 299篇 |
1995年 | 298篇 |
1994年 | 307篇 |
1993年 | 292篇 |
1992年 | 326篇 |
1991年 | 340篇 |
1990年 | 270篇 |
1989年 | 214篇 |
1988年 | 235篇 |
1987年 | 216篇 |
1986年 | 249篇 |
1985年 | 348篇 |
1984年 | 332篇 |
1983年 | 290篇 |
1982年 | 306篇 |
1981年 | 329篇 |
1980年 | 279篇 |
1979年 | 278篇 |
1978年 | 252篇 |
1977年 | 184篇 |
1976年 | 185篇 |
1975年 | 193篇 |
1974年 | 141篇 |
1973年 | 164篇 |
1972年 | 120篇 |
1971年 | 103篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
131.
Ida R. Hoos 《Technological Forecasting and Social Change》1977,10(4):335-344
Can we study the future “rationally” and “scientifically”? This paper examines the methods now in use and finds the assumptions shaky, the tools faulty, and the implications dangerous. With data as the driver, analysis the watchword, quantification the rule, and model-building the prime preoccupation, futurology rests heavily on two key pillars, the information base and cost/benefit calculations. Because these are shown to rest on quicksand, the elaborate methodological structure based on them totters precariously. 相似文献
132.
THE DETERMINANTS OF THE INTER-INDUSTRY PATTERN OF DIVERSIFICATION BY U.K. MANUFACTURING ENTERPRISES*
R. M. Grant 《Bulletin of economic research》1977,29(2):84-95
Evidence of the diversity of output of larger U.K. manufacturing enterprises’in 1958, 1963 and 1968 is provided in the Reports on the Census of Production. The Censuses show that between 1958 and 1968 diversification was a significant and general trend in manufacturing industries and an important element in the growth of firms during the period. Moreover diversification seems to be part of a longer term trend in U.K. industry and part of the typical development pattern of the large firm. A theory of the firm's diversification decision is proposed and from this theory predictions are made of the structural features both of a firm's primary industry and of outside industries which are likely to encourage diversification from the one industry to the other. The power of the model in explaining the pattern of diversification between SIC manufacturing orders in the period 1963–68 is weak, due in part to the wide variety of factors influencing diversification and to the aggregated form of the data. Nevertheless, the results show the importance of research and development effort in encouraging diversification and the stimulus to diversification given by profitability and risk in firms’primary industries and high rates of output growth in outside industries. While the findings offer no clear conclusions regarding the impact of diversification upon economic performance, the results are consistent with the propositions that (i) diversification encourages technical progress in industry and (ii) diversification increases the efficiency with which resources are allocated between industries. 相似文献
133.
134.
135.
136.
137.
138.
139.
Lowes RL 《Medical economics》1995,72(15):94, 97-8, 101 passim
140.