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61.
Modern silvicultural treatments are based on single trees whereas classic forest economics look at the stand level. To accompany each other it is necessary to transfer the established economic models to the single tree level. This paper is an approach to use the Faustmann model and the corresponding marginal rate of return (Pressler percent) to derive value increment rates of single trees taking into account neighbourhood effects due to competition between individual trees. Furthermore, optimal rotation periods and optimal final diameters for future trees will be calculated. 相似文献
62.
We analyze traders' strategic behavior in an index options market, examining the relationships among expected duration, frequency of trades, trade size, and time to maturity using a modified ACD model. Using intraday data at‐the‐money put and call options, we obtain the following results: (1) Frequency of trades contains more information about future option price volatility than does trade size. This may result from institutional or large traders who have issued naked options using the delta‐neutral strategy to hedge those options. This also suggests that informed traders use their informational advantage little by little, rather than all at once. (2) Option volatility increases as the maturity date approaches, contradicting the prediction of the Black‐Scholes model. (3) The duration of the previous interval has a persistent effect on expected duration of the current interval. (4) For the estimation of the modified ACD model, the standardized distribution of duration is Weibull with γ < 1, not exponential. (5) The duration in the options market exhibits an inverse U‐shaped diurnal pattern, much like that of the U.S. stock market. However, unlike in the U.S. stock market, the index options duration becomes much shorter right before lunch hour (12:00 pm). © 2005 Wiley Periodicals, Inc. Jrl Fut Mark 25:105–133, 2005 相似文献
63.
The existence theorem of Allingham (Econometrica 59:1169–1174, 1991) for the capital asset pricing model (CAPM) is generalized
to the case where agents have heterogeneous expectations on the return distribution and the mean-variance utility functions
are quasiconcave. This result is built upon new conditions which are distinct from and weaker than the conditions imposed
on the CAPM in the literature.
相似文献
64.
By utilizing previously unexplored plant–product data on Korean manufacturing, and detailed import data for 1991–1998, this paper empirically investigates whether greater access to imported intermediate varieties enhanced plant total factor productivity and product‐switching behavior. First, consistent with previous empirical studies, we find that a plant that belonged to industries with higher imported intermediate variety growth experienced higher productivity growth. Second, our empirical results suggest that increased imported intermediate varieties stimulated the product‐switching behavior of domestic plants. Because product‐switching behavior (i.e. simultaneously adding and dropping products) could be understood as a part of the continual process of ‘creative destruction’ within plants, our results imply that imported intermediate variety growth may be one of the channels through which resource reallocation within plants can be promoted. 相似文献
65.
Sunku Hahn 《Economics Letters》2010,106(2):122-124
Competitive firms can make a comparison with each other and easily figure out the better strategy, while monopoly firms cannot. Therefore, a competitive firm may be more likely to try low cost innovations than a monopoly firm may. 相似文献
66.
Using eight measures of liquidity, and addressing the potential endogeneity of initial returns, we find underpricing generally increases the secondary market liquidity of IPOs over the first year of trading, irrespective of the horizon over which liquidity is measured. For two model specifications over the eight measures, fifteen regressions display signs consistent with higher underpricing increasing liquidity and thirteen of these are statistically significant. We also find higher initial returns are significantly negatively correlated with the probability of informed trade. Furthermore, the liquidity effects of underpricing survive the lockup date, suggesting they are not quickly dissipated. 相似文献
67.
Empirical research on the growing wave of services offshoring has examined the impact of several key factors such as wages and personnel quality on firm choices of offshore locations. However, examinations of culture in services offshoring to date have largely been confined to the relatively coarse concept of aggregate cultural differences between the home and host countries. We propose that specific cultural attributes are more closely aligned with successful service provision. We empirically examine our theoretical development of service cultural alignment and investigate the impact of cultural dimensions on the location of service offshoring projects. In addition, we examine whether Western and Asian firms have different cultural preferences in terms of the location of services offshoring projects. We find that host countries with lower levels of Hofstede's uncertainty avoidance as well as higher levels of individualism and power distance are able to attract greater numbers of service offshoring projects, even after controlling for macroeconomic, linguistic, and risk-related factors. We did not find that Western and Asian firms have different cultural preferences in this regard. We discuss implications of the findings with respect to theory, managerial practice, and governmental policy. 相似文献
68.
Ethanol production in the United States has been steadily growing and is expected to continue growing. Many politicians see
increased ethanol use as a way to promote environmental goals, such as reducing greenhouse gas emissions, and energy security
goals. This paper provides a benefit-cost analysis of increasing ethanol use based on an analysis by the Environmental Protection
Agency. We find that the cost of increasing ethanol production to almost ten billion gallons a year is likely to exceed the
benefits by about three billion dollars annually. We also suggest that earlier attempts aimed at promoting ethanol would have
likely failed a benefit-cost test, and that Congress should consider repealing ethanol incentive programs, such as the ethanol
tariff and tax credit.
相似文献
69.
70.
Corporate sustainability reporting quality has been frequently criticised as being unbalanced, presenting an overly positive view or failing to address material issues. The purpose of this article is to provide a fresh explanation for poor quality sustainability reporting and to propose how quality issues may be addressed. The theoretical framework combines the legitimacy and accountability perspectives using Akerlof's (1970) Market for Lemons theory. Akerlof's approach is extended by differentiating between three types of information in sustainability reports namely search, experience and credence. The article concludes that the type of information must be considered when determining measures to improve report quality. 相似文献