全文获取类型
收费全文 | 1714篇 |
免费 | 156篇 |
国内免费 | 4篇 |
专业分类
财政金融 | 271篇 |
工业经济 | 71篇 |
计划管理 | 532篇 |
经济学 | 342篇 |
综合类 | 57篇 |
运输经济 | 14篇 |
旅游经济 | 14篇 |
贸易经济 | 356篇 |
农业经济 | 111篇 |
经济概况 | 106篇 |
出版年
2024年 | 2篇 |
2023年 | 27篇 |
2022年 | 24篇 |
2021年 | 38篇 |
2020年 | 77篇 |
2019年 | 90篇 |
2018年 | 72篇 |
2017年 | 87篇 |
2016年 | 73篇 |
2015年 | 63篇 |
2014年 | 112篇 |
2013年 | 174篇 |
2012年 | 89篇 |
2011年 | 95篇 |
2010年 | 68篇 |
2009年 | 72篇 |
2008年 | 94篇 |
2007年 | 112篇 |
2006年 | 77篇 |
2005年 | 91篇 |
2004年 | 49篇 |
2003年 | 46篇 |
2002年 | 31篇 |
2001年 | 28篇 |
2000年 | 29篇 |
1999年 | 21篇 |
1998年 | 23篇 |
1997年 | 24篇 |
1996年 | 12篇 |
1995年 | 13篇 |
1994年 | 9篇 |
1993年 | 10篇 |
1992年 | 7篇 |
1991年 | 6篇 |
1990年 | 6篇 |
1989年 | 6篇 |
1988年 | 4篇 |
1987年 | 4篇 |
1986年 | 2篇 |
1985年 | 4篇 |
1984年 | 1篇 |
1982年 | 2篇 |
排序方式: 共有1874条查询结果,搜索用时 0 毫秒
21.
22.
Sequential estimation problems for the mean parameter of an exponential distribution has received much attention over the
years. Purely sequential and accelerated sequential estimators and their asymptotic second-order characteristics have been
laid out in the existing literature, both for minimum risk point as well as bounded length confidence interval estimation
of the mean parameter. Having obtained a data set from such sequentially designed experiments, the paper investigates estimation
problems for the associatedreliability function. Second-order approximations are provided for the bias and mean squared error of the proposed estimator of the reliability
function, first under a general setup. An ad hoc bias-corrected version is also introduced. Then, the proposed estimator is
investigated further under some specific sequential sampling strategies, already available in the literature. In the end,
simulation results are presented for comparing the proposed estimators of the reliability function for moderate sample sizes
and various sequential sampling strategies. 相似文献
23.
Distribution Dynamics of CO<Subscript>2</Subscript> Emissions 总被引:1,自引:0,他引:1
This paper uses nonparametric methods to examine the convergence in CO2 emissions per capita on a sample of 100 countries for the period 1966–1996. Industrial countries show a convergence pattern.
However, there is little evidence of convergence for the whole sample. 相似文献
24.
Choosing the sample size in advance is a familiar problem: often, additional observations appear to be desirable. The final sample size then becomes a random variable, which has rather serious consequences.
Two such sample extension situations will be considered here. In the first situation, the observed sample variance determines whether or not to double the original sample size. In the second situation, the variances observed in two independent samples are compared; their ratio determines the number of additional observations. 相似文献
Two such sample extension situations will be considered here. In the first situation, the observed sample variance determines whether or not to double the original sample size. In the second situation, the variances observed in two independent samples are compared; their ratio determines the number of additional observations. 相似文献
25.
Roberto Ren 《Economics Letters》2006,90(3):390-395
This letter introduces nonparametric estimators of the drift and diffusion coefficient of stochastic volatility models which exploit techniques for estimating integrated volatility with high-frequency data. The performance of the proposed estimators is assessed on simulations of two popular stochastic volatility models. 相似文献
26.
The purpose of this paper is to describe the implications of the collective model of household behavior for the methods used to estimate the economic value of non-marketed environmental resources. After demonstrating how the separability restrictions inherent in the collective model allow individual preference and household income allocation choices to be distinguished, the paper demonstrates how the framework can be used to recover Hicksian consumer surplus. An algebraic example is used to illustrate how the framework can be used in valuing environmental resources. 相似文献
27.
Hendershott Patric Macgregor Bryan White Michael 《The Journal of Real Estate Finance and Economics》2002,24(1-2):59-87
This paper presents rent models for retail and office property in the United Kingdom. Panel data are used covering eleven regions for 29 years, enabling us to overcome the limitations of a relatively short time series. We use an error correction model (ECM) framework to estimate long-run equilibrium relationships and short-term dynamic corrections. The combination of panel data and an ECM is an innovative approach that is still being developed in economics. We construct new supply series that combine infrequent stock data with more frequent construction data. Separate regional models are estimated for retail and office properties. The regions are then combined into a number of panels on the basis of the income and price elasticities in the long-run and short-run models. Unlike previous studies, we find no evidence of a board north–south divide between low growth and high growth regions. Like these studies we do find a London effect: in London, demand elasticities for space with respect to both price (rent) and income are much lower in magnitude. We conclude that, while the economic drivers may vary, there is no evidence of differences in the operation of the regional property markets outside London. Elasticities for retail and office are similar. Our final models are parsimonious with single measures of economic activity and of supply and always support the use of an ECM. 相似文献
28.
We consider the Merton problem of optimal portfolio choice when the traded instruments are the set of zero-coupon bonds. Working within a Markovian Heath–Jarrow–Morton model of the interest rate term structure driven by an infinite-dimensional Wiener process, we give sufficient conditions for the existence and uniqueness of an optimal trading strategy. When there is uniqueness, we provide a characterization of the optimal portfolio as a sum of mutual funds. Furthermore, we show that a Gauss–Markov random field model proposed by Kennedy [Math. Financ. 4, 247–258(1994)] can be treated in this framework, and explicitly calculate the optimal portfolio. We show that the optimal portfolio in this case can be identified with the discontinuities of a certain function of the market parameters. 相似文献
29.
论建设项目前期的工程造价合理确定 总被引:3,自引:1,他引:3
投资估算是控制工程造价的源头,是开展工程造价管理后续工作的关键,尤其在工程建设投资多元化的当今,能否合理确定投资估算、设计概算,将影响到投资资金筹措和计划的落实。章就如何合理地确定工程造价提出了建议。 相似文献
30.
KOSTAS MAVROMATIS 《Journal of Money, Credit and Banking》2018,50(7):1441-1478
Monetary policy in the United States has been documented to have switched from reacting weakly to inflation fluctuations during the 1970s, to fighting inflation aggressively from the early 1980s onward. In this paper, I analyze the impact of the U.S. monetary policy regime switches on the Eurozone. I construct a New Keynesian two‐country model where foreign (U.S.) monetary policy switches regimes over time. I estimate the model for the U.S. and the Euro Area using quarterly data and find that the United States has switched between those two regimes, in line with existing evidence. I show that foreign regime switches affect home (Eurozone) inflation and output volatility and their responses to shocks, substantially, as long as the home central bank commits to a time‐invariant interest rate rule reacting to domestic conditions only. Optimal policy in the home country instead requires that the home central bank reacts strongly to domestic producer‐price inflation and to international variables, such as imported goods relative prices. In fact, I show that currency misalignments and relative prices play a crucial role in the transmission of foreign monetary policy regime switches internationally. Interestingly, I show that only marginal gains arise for the Euro Area when the European Central Bank (ECB) adjusts its policy according to the monetary regime in the United States. Thus, a simple time‐invariant monetary policy rule with a strong reaction to Producer Price Index (PPI) inflation and relative prices is enough to counteract the effects of monetary policy switches in the United States. 相似文献