全文获取类型
收费全文 | 25273篇 |
免费 | 291篇 |
专业分类
财政金融 | 4352篇 |
工业经济 | 1495篇 |
计划管理 | 3911篇 |
经济学 | 5626篇 |
综合类 | 551篇 |
运输经济 | 118篇 |
旅游经济 | 343篇 |
贸易经济 | 6238篇 |
农业经济 | 284篇 |
经济概况 | 1985篇 |
信息产业经济 | 44篇 |
邮电经济 | 617篇 |
出版年
2023年 | 73篇 |
2022年 | 51篇 |
2021年 | 97篇 |
2020年 | 178篇 |
2019年 | 251篇 |
2018年 | 2539篇 |
2017年 | 2320篇 |
2016年 | 1504篇 |
2015年 | 318篇 |
2014年 | 399篇 |
2013年 | 1277篇 |
2012年 | 828篇 |
2011年 | 2287篇 |
2010年 | 2136篇 |
2009年 | 1878篇 |
2008年 | 1791篇 |
2007年 | 2101篇 |
2006年 | 295篇 |
2005年 | 596篇 |
2004年 | 673篇 |
2003年 | 772篇 |
2002年 | 467篇 |
2001年 | 234篇 |
2000年 | 189篇 |
1999年 | 145篇 |
1998年 | 163篇 |
1997年 | 118篇 |
1996年 | 141篇 |
1995年 | 117篇 |
1994年 | 112篇 |
1993年 | 102篇 |
1992年 | 105篇 |
1991年 | 97篇 |
1990年 | 77篇 |
1989年 | 81篇 |
1988年 | 70篇 |
1987年 | 59篇 |
1986年 | 88篇 |
1985年 | 88篇 |
1984年 | 81篇 |
1983年 | 72篇 |
1982年 | 93篇 |
1981年 | 64篇 |
1980年 | 61篇 |
1979年 | 53篇 |
1978年 | 45篇 |
1977年 | 48篇 |
1976年 | 37篇 |
1975年 | 30篇 |
1973年 | 28篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
This paper analyzes the multiple bounded format, in which uncertainty is directly incorporated into the WTP question. A new approach for analyzing multiple bounded uncertainty data is presented. The intuition underlying the approach is that uncertain individuals would like to state their WTP as intervals rather than precise values and that the width of the intervals is determined by the degree of uncertainty. The approach is compared to the one applied in Welsh and Poe [Welsh, M., Poe, G.L., 1998. Elicitation effects in contingent valuation: comparisons to a multiple bounded discrete choice approach. Journal of Environmental Economics and Management 36, 170–185] which treats uncertainty by conditioning responses on specific verbal probability statements. We argue that the conditioning approach overestimates mean and median WTP and that conditioning WTP estimates on probability statements like “probably” and “unsure” make them “fuzzy”. To empirically compare the two approaches we use data from 2004 concerning implementation of a predator protection policy in Sweden. Our analysis show that the suggested approach: (1) is more intuitive; (2) better fits the data; (3) estimates mean and median WTP with better precision; (4) is less sensitive to distributional assumptions; and (5) it is better suited for policy analysis. 相似文献
22.
23.
Keith H. Coble Thomas O. Knight George F. Patrick & Alan E. Baquet 《Review of Agricultural Economics》2002,24(2):309-321
A survey conducted in Mississippi, Texas, Indiana, and Nebraska elicited producers' preferences for various farm policy changes. This permitted examination of the diversity of preferences that single-state studies have not allowed. Five policy choices, including deficiency payments, loan programs, crop insurance, export programs, and disaster payments were examined. Logit model results predicting producer preferences for each of the five dichotomous policy choices are reported. Explanatory variables based on expected utility theory such as risk aversion, price and yield variability, and price–yield correlation are significant in various models. 相似文献
24.
The role of tourism is of vital economic importance, particularly for small countries with a privileged geographical location and favourable weather conditions. This paper examines the importance of tourism as a conditioning factor for higher regional growth in Portugal by employing the conditional convergence hypothesis of Barro and Sala-i-Martin, associated with the endogenous growth theory. The panel data estimation approach provides evidence of the positive impact of tourism (through the accommodation capacity) on the growth in per-capita income among the Portuguese regions, increasing the rate of convergence. Therefore, tourism can be considered as an alternative source for stimulating higher regional growth in Portugal, if the supply characteristics of this sector are improved. 相似文献
25.
Gorm Gabrielsen Jeffrey D. Gramlich & Thomas Plenborg 《Journal of Business Finance & Accounting》2002,29(7&8):967-988
This study employs Danish data to examine the empirical relationship between the proportion of managerial ownership and two characteristics of accounting earnings: the information content of earnings and the magnitude of discretionary accruals. In previous research concerning American firms, Warfield et al. (1995) document a positive relationship between managerial ownership and the information content of earnings, and a negative relationship between managerial ownership and discretionary accruals. We question the generality of the Warfield et al. result, as the ownership structure found in most other countries, including Denmark, deviates from the US ownership configuration. In fact, Danish data indicate that the information content of earnings is inversely related to managerial ownership. 相似文献
26.
Erik Benrud 《Journal of Economics and Finance》2007,31(2):143-165
The demand for and supply of analysts’ opinions in this model yield an equilibrium that demonstrates how the information content
of the opinions reacts to changes in exogenous parameters. The model also shows how changes in the parameters make analysts’
opinions more or less dispersed; for example, a decline in investor risk aversion, a decrease in market volatility, and an
increase in information costs can lead to analysts’ opinions becoming more similar. Recognizing how exogenous factors can
affect the supply and demand of analysts’ opinions gives additional insights into questions concerning what may appear to
be herd behavior by analysts and also the relationship between forecast dispersion and information content. (JEL: G29, C71) 相似文献
27.
We design a new metric to measure the net buying and selling by institutions and individual investors and find that from 1980 to 2004 institutional investors were net buyers of growth stocks and net sellers of value stocks, implying that individual investors were net buyers of value stocks and net sellers of glamour stocks. The institutional preference for glamour and value stocks seems to be related to sell‐side analysts' recommendations and recent favorable stock price performances, especially during the post‐1994 period. Finally, the institutional buying of growth stocks and sale of value stocks was not based on superior information. 相似文献
28.
Ohne Zusammenfassung
Dipl.-Ing. (univ.) Michael Belau ist Director und Head of Rental Management
Dipl.-Wirtschaftsing. (FH) Michael Schildger ist Vice President und Head of Finance
Dr. Verena Sturm ist Manager Corporate Real Estate Services 相似文献
29.
30.