全文获取类型
收费全文 | 11834篇 |
免费 | 275篇 |
专业分类
财政金融 | 2189篇 |
工业经济 | 1090篇 |
计划管理 | 1836篇 |
经济学 | 2557篇 |
综合类 | 148篇 |
运输经济 | 101篇 |
旅游经济 | 235篇 |
贸易经济 | 2084篇 |
农业经济 | 589篇 |
经济概况 | 880篇 |
水利工程 | 395篇 |
信息产业经济 | 2篇 |
邮电经济 | 3篇 |
出版年
2023年 | 65篇 |
2021年 | 73篇 |
2020年 | 145篇 |
2019年 | 197篇 |
2018年 | 199篇 |
2017年 | 222篇 |
2016年 | 238篇 |
2015年 | 167篇 |
2014年 | 251篇 |
2013年 | 1511篇 |
2012年 | 325篇 |
2011年 | 458篇 |
2010年 | 327篇 |
2009年 | 379篇 |
2008年 | 363篇 |
2007年 | 368篇 |
2006年 | 366篇 |
2005年 | 327篇 |
2004年 | 312篇 |
2003年 | 337篇 |
2002年 | 329篇 |
2001年 | 284篇 |
2000年 | 257篇 |
1999年 | 251篇 |
1998年 | 257篇 |
1997年 | 244篇 |
1996年 | 215篇 |
1995年 | 184篇 |
1994年 | 167篇 |
1993年 | 194篇 |
1992年 | 175篇 |
1991年 | 166篇 |
1990年 | 147篇 |
1989年 | 131篇 |
1988年 | 136篇 |
1987年 | 111篇 |
1986年 | 131篇 |
1985年 | 204篇 |
1984年 | 216篇 |
1983年 | 176篇 |
1982年 | 177篇 |
1981年 | 168篇 |
1980年 | 171篇 |
1979年 | 163篇 |
1978年 | 122篇 |
1977年 | 110篇 |
1976年 | 106篇 |
1975年 | 77篇 |
1974年 | 99篇 |
1973年 | 57篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
This research explores the acquisition of customer input and its importance in the development of very new products. Data were gathered on 55 product development projects from the computer telephony integration industry – a new industry experiencing rapid technological change. The data were used to test hypotheses concerning the relationships between product newness, the importance of customer input in the development process, and the use of customer intensive market research methods. We found that the importance of customer input increases with market newness of a product up to a point and then drops off for very new products, whereas the importance of customer input increases with technological newness of a product without dropping off. We also found that the importance of customer input significantly increases the use of customer intensive market research methods; whereas, neither market nor technological product newness in themselves had much direct effect on research methods. 相似文献
102.
John D. Abell 《The Review of Black Political Economy》1989,18(2):43-60
This article uses vector autoregression analysis to examine the relative impacts on black and white employment growth of monetary
and fiscal actions. It was found that the employment responses to anticipated policy actions, while significant, were generally
short-lived, with the exception of the effects of anticipated money growth on white employment. The influences of unanticipated
policy changes are of a longer duration. The predominant finding in which black employment growth responded differently from
white employment growth was in response to a monetary shock. The black employment response was sharply negative while the
white employment response was a gradual increase over nine quarters. The results indicate that this difference occurred only
during the 1980s and not in the 1970s and suggests that the effects of bank failures and credit rationing during this period
may have significantly hurt minority employment opportunities. 相似文献
103.
UK Industrial Policy: Old Tunes on New Instruments? 总被引:1,自引:0,他引:1
This paper discusses the current Labour government's industrialpolicyas most recently reflected in its document on manufacturingstrategyin the context of industrial policy in the UKover the last 50 years and the form that it has taken elsewherein Europe. It concludes that the thematic priorities for UKindustrial policy in the 1960sinternational competitiveness,innovation, competition, and skillscontinue to be thekey themes of UK policy today. The paper presents data thatillustrate the gaps that exist in key indicators of performancebetween the UK and its main economic competitors. The differencebetween the 1960s and the 2000s is that there are new instrumentsof policy. Two areas in particular are focused oncompetitionpolicy and technology policyand an attempt is made toassess the likely effectiveness of these new instruments. Thepaper concludes that the international evidence base for thesenew approaches is reasonably robust but that it is still toosoon to tell if they are having the hoped-for impact on theperformance of the UK economy. 相似文献
104.
105.
This paper uses national data on individual physicians and two control groups to provide evidence on the extent to which each of five medical malpractice reforms impacts the decision to move one's medical practice to another state. We find robust evidence that states that have implemented noneconomic damage caps experience less out-migration of physicians than states that do not have these reforms. In addition, we find some evidence that joint and several liability reforms and patient compensation funds also impact the migration decisions of physicians. 相似文献
106.
107.
The recent global financial crisis demonstrates that market liquidity is a prominent systematic risk globally. We find that local liquidity risk, in addition to the local market, value and size factors, demands a systematic premium across stocks in 11 developed markets. This local pricing premium is smaller in countries where the country-level corporate boards are more effective and where there are less insider trading activities. We also discover that global liquidity risk is a significant pricing factor across all developed country market portfolios after controlling for global market, value, and size factors. The contribution of this risk to the return on a country market portfolio is economically and statistically significant within and across regions. 相似文献
108.
In this paper, we propose a Weighted Stochastic Mesh (WSM) algorithm for approximating the value of discrete‐ and continuous‐time optimal stopping problems. In this context, we consider tractability of such problems via a useful notion of semitractability and the introduction of a tractability index for a particular numerical solution algorithm. It is shown that in the discrete‐time case the WSM algorithm leads to semitractability of the corresponding optimal stopping problem in the sense that its complexity is bounded in order by with being the dimension of the underlying Markov chain. Furthermore, we study the WSM approach in the context of continuous‐time optimal stopping problems and derive the corresponding complexity bounds. Although we cannot prove semitractability in this case, our bounds turn out to be the tightest ones among the complexity bounds known in the literature. We illustrate our theoretical findings by a numerical example. 相似文献
109.
110.