全文获取类型
收费全文 | 32136篇 |
免费 | 760篇 |
专业分类
财政金融 | 5944篇 |
工业经济 | 2544篇 |
计划管理 | 5586篇 |
经济学 | 7301篇 |
综合类 | 316篇 |
运输经济 | 284篇 |
旅游经济 | 536篇 |
贸易经济 | 5291篇 |
农业经济 | 1661篇 |
经济概况 | 3353篇 |
信息产业经济 | 3篇 |
邮电经济 | 77篇 |
出版年
2023年 | 166篇 |
2021年 | 226篇 |
2020年 | 441篇 |
2019年 | 672篇 |
2018年 | 729篇 |
2017年 | 762篇 |
2016年 | 733篇 |
2015年 | 525篇 |
2014年 | 822篇 |
2013年 | 3467篇 |
2012年 | 1073篇 |
2011年 | 1151篇 |
2010年 | 990篇 |
2009年 | 1168篇 |
2008年 | 1085篇 |
2007年 | 947篇 |
2006年 | 927篇 |
2005年 | 807篇 |
2004年 | 728篇 |
2003年 | 765篇 |
2002年 | 678篇 |
2001年 | 719篇 |
2000年 | 676篇 |
1999年 | 615篇 |
1998年 | 652篇 |
1997年 | 617篇 |
1996年 | 571篇 |
1995年 | 522篇 |
1994年 | 520篇 |
1993年 | 489篇 |
1992年 | 485篇 |
1991年 | 500篇 |
1990年 | 454篇 |
1989年 | 350篇 |
1988年 | 350篇 |
1987年 | 368篇 |
1986年 | 322篇 |
1985年 | 471篇 |
1984年 | 490篇 |
1983年 | 458篇 |
1982年 | 395篇 |
1981年 | 373篇 |
1980年 | 375篇 |
1979年 | 353篇 |
1978年 | 291篇 |
1977年 | 242篇 |
1976年 | 242篇 |
1975年 | 196篇 |
1974年 | 193篇 |
1973年 | 192篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
David Hoopes 《R&D Management》2001,31(4):381-389
Managers and scholars emphasize the importance of inter‐departmental integration to successful product development and emphasize the importance of product development capabilities to firm performance. Interdepartmental integration can increase shared knowledge; this in turn can reduce the severity and incidence of seemingly unnecessary and costly mistakes leading to more efficient and effective product development. This paper examines the sources of shared knowledge problems across functional and product‐based groups. Using interviews, product development plans, and time‐sheet data, we look at the underlying factors behind two sources of knowledge sharing problems: (1) a serial product development process (i.e. little or no face‐to‐face communications) and (2) ineffective use of integrating mechanisms because of sticky knowledge. For each problem source, we find two key causal factors. We discuss the problems, their factors, and the implications for management and theory. 相似文献
12.
This paper examines monthly wage data collected by the Agro Economic Survey from seven villages in the Cimanuk River Basin of West Java, where data on agricultural and non-agricultural wages and prices of nine essential commodities were collected twice monthly between 1977 and 1983. Movements in money wages deflated by both the rice price and a weighted index of basic commodities are analysed in detail and differences between lowland and upland villages are discussed. 相似文献
13.
14.
15.
If actively managed mutual funds suffer from diminishing returns to scale, funds should alter investment behavior as assets under management increase. Although asset growth has little effect on the behavior of the typical fund, we find that large funds and small‐cap funds diversify their portfolios in response to growth. Greater diversification, especially for small‐cap funds, is associated with better performance. Fund family growth is related to the introduction of new funds that hold different stocks from their existing siblings. Funds with many siblings diversify less rapidly as they grow, suggesting that the fund family may influence a fund's portfolio strategy. 相似文献
16.
Models that assume only consumer tastes determine the characteristics of supply are restrictive; producers can gain utility from aspects of production and pay for deviating from demand by accepting lower financial returns. We model and measure motivations of California winery owners, and analyze their effects on quality and price. We find utility–maximizers are more likely to produce high quality and set higher quality–adjusted prices. Profit–oriented owners are less likely to produce high quality wines. These results suggest that the presence of hobbyists who enjoy producing high quality may lower financial returns in the segment and discourage profit–maximizers from locating there. 相似文献
17.
This article studies the role of risk arbitrageurs in takeoversand the source of their advantage. We show how the presenceof arbitrageurs affects the value of the target shares, sincearbitrageurs are more likely to tender. Therefore an arbitrageurhas the informational advantage of knowing he bought shares.In equilibrium, the number of arbitrageurs buying shares andthe price they pay are determined endogenously. We also presentseveral empirical implications, including the relationship amongtrading volume, takeover premium, liquidity of the shares, andthe number of risk arbitrageurs investing in one particulardeal. 相似文献
18.
Ian M. Dobbs† 《Journal of Business Finance & Accounting》2004,31(5-6):729-757
Replacement investment is essentially a regenerative optimal stopping problem; that is, the key decision concerns when to terminate the life of existing plant – and hence when to start over again. This paper examines this optimisation problem within a continuous time framework and studies the qualitative and quantitative impact of uncertainty on the timing of new investment (and the criteria that should be used for terminating the life of existing plant). 相似文献
19.
20.
This study examines the influence of day-of-the-week patterns in security returns on long-run IPO underperformance. Comparisons are made between the IPOs in Ritter's [20] database, and a constructed set of matching firms based on SIC code and size, using NYSE, AMEX, and NASDAQ securities. It is found that virtually all of the IPO underperformance occurs on Mondays and Tuesdays and that the degree of underperformance significantly differs from other days. Thus, a common explanation may exist for the general day-of-the-week pattern in security returns and IPO long-run underperformance. 相似文献