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1.
The Productivity of US States since 1880   总被引:1,自引:0,他引:1  
This study uses state-level variation in labor productivity levels at twenty-year intervals between 1880 and 1980 to examine the relative importance of institutional and geographical influences in explaining observed and persistent differences in standards of living over time and across regions. Focusing on fundamental rather than proximate influences, we find that both institutional characteristics and some physical geography characteristics account for a high proportion of the differences in state productivity levels: states with navigable waterways, a large minerals endowment, and no slaves in 1860, on average, had higher labor productivity levels throughout the sample period. However, we find little support for two other influences that have previously received attention—climate and latitude.  相似文献   
2.
Abstracts     
Quality & Quantity -  相似文献   
3.
This paper describes dust explosibility research in full-scale experimental mines and a 20-L laboratory chamber at the U.S. Bureau of Mines and in a 1-m3 laboratory chamber at Fike Corporation. The purpose of this research is to improve safety in mining and other industries that manufacture, process, or use combustible dusts. As part of this work, carbonaceous dusts with a wide range of volatilities and various particle size distributions were studied. Laboratory data on the minimum explosible concentrations of predispersed dusts were comparable to mine data for nominal dust loadings that were dispersed by the aerodynamic disturbance from a gas ignition zone. Recommendations are given on the limitations of small-scale testing such as “overdriving” by too strong of an ignitor. The effect of dust particle size on explosibility data is illustrated for coal and aluminum dusts. For both dusts, the finest sizes were the most hazardous. The inerting requirements for preventing explosions were also measured in both laboratory and large-scale systems. All the data show relatively good agreement between the laboratory and the large-scale tests.  相似文献   
4.
We use panel data to estimate nonlinear Euler equations for preferences that are nonseparable in consumption and leisure. This approach departs from existing panel data studies that investigate linearizations and/or separable preferences. Intuitively plausible estimates are obtained only when excluding nonassetholders from the sample, which indicates the importance of asset market participation. For market participants, estimated parameter values are intuitively appealing, but differ from existing estimates. They also differ from parameter values commonly used in computational experiments. These findings have implications for the extensive literature in macroeconomics and finance that studies models of intertemporal decision-making, and they confirm the importance of market incompleteness.  相似文献   
5.
In the United Kingdom, Charities Aid Foundation (CAF) data suggest that grant-making trusts are currently responsible for supplying over 13 per cent of an ‘average’ charity's income (approximately four times the amount committed by corporate donors). Remarkably however, very little is known about the behaviour of such organisations and the contact strategies that are used by charities to solicit their support. This paper reviews the findings of a postal survey of 350 grant-making trusts and identifies the criteria most commonly used to perform an initial sift of proposals and to develop a final short list to appraise for support or rejection. The findings clearly show that charity applications to trusts have increased dramatically over the past three years. Regrettably however, trusts perceive that there has been an accompanying decline in the standards of application being made. Trusts report that they are now frequently subjected to ill-considered ‘blanket’ mailings from charities that often take no account of the specific aims and objectives of the trust. In general, the research also identified that applicants appeared to have undertaken very little research prior to submission of their application and if successful, would be unlikely to thank the trustees, nor to indicate what had been achieved as a result of their generosity.  相似文献   
6.
There are a range of solutions that address asset building challenges for low-wealth women. Here we highlight some solutions that focus on basic needs (child care, child support) and creating economic stability with disposable income (income available after basic needs are met); solutions that address predatory lending and the housing crisis; and solutions that focus on joint ownership of assets and community-based asset building.  相似文献   
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8.
Opening, lunch and closing of financial markets induce a periodic component in the volatility of high-frequency returns. We show that price jumps cause a large bias in the classical periodicity estimators and propose robust alternatives. We find that accounting for periodicity greatly improves the accuracy of intraday jump detection methods. It increases the power to detect the relatively small jumps occurring at times for which volatility is periodically low and reduces the number of spurious jump detections at times of periodically high volatility. We use the series of detected jumps to estimate robustly the long memory parameter of the squared EUR/USD, GBP/USD and YEN/USD returns.  相似文献   
9.
This paper investigates Euler equations involving security prices and household-level consumption data. It provides a useful complement to many existing studies of consumption-based asset pricing models that use a representative-agent framework, because the Euler equations under investigation hold even if markets are incomplete. It also provides a useful complement to simulation-based studies of market incompleteness. The empirical evidence indicates that the theory is rejected by the data along several dimensions. The results therefore indicate that some well-documented asset-pricing puzzles do not result from aggregation problems for the preferences under investigation.  相似文献   
10.
Many investment companies hold diversified asset portfolios and frequently try to mirror or outperform a market index for each asset class such as stocks and bonds. As Wibaut and Wilford (2009) show, often the same issuers appear in each of those indices and this may lead to undesirable results such as during a crisis period. Our research further explores the topic of diversification with a special focus on the financial crisis period of 2007 through 2009. Our results indicate that there is benefit in terms of correlations from holding bond and stock portfolios. Interestingly, these findings show the benefit is most pronounced during times of market stress.  相似文献   
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