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201.
World oil depletion, including natural gas liquids, was modelled in the past by many authors. Recently, Guseo and Dalla Valle have introduced and Guidolin has applied a new approach following perturbed life-cycle diffusion models. Here we examine joint effects of economic and strategic or technological interventions using a Generalized Bass Model (GBM). Statistical analysis takes into account three different hierarchical levels: natural diffusion, long memory interventions and stochastic components. The main results confirm the statistical significance of historical 1970s shocks and highlight a strong long memory effect due to an increase in oil production after World War II. The estimated peak-date, 2007, and the 90% depletion time, 2019, are determined under an equilibrium intervention hypothesis. 相似文献
202.
我国城市商业银行的经营模式选择分析 总被引:2,自引:0,他引:2
自城市商业银行成立之初,其经营活动就被限制在所在城市。但是近几年来,单一城市制经营模式的负面效应日益显现,并成为城市商业银行进一步发展的障碍。随着地区经济一体化和金融一体化的发展,资金的跨地区流动日益频繁,客户对银行服务和产品的要求也日益多元化,尤其是需要商业银行能够跨区域为其提供金融服务。伴随着城市商业银行改革的向前推进,城市商业银行要求联合、跨区域发展的愿望越来越强烈。实行新的经营模式才能提高城市商业银行的整体发展水平和市场竞争能力。 相似文献
203.
Economic principles and fundamental model of the sustainable utilization of ecological resources 总被引:1,自引:0,他引:1
Li Lin Du Jinpei Li Lin 《生态经济(英文版)》2006,2(4):395-403
1. Introduction The mainstream of present economy is the green eco-economy, including green products, green production, green consumption, green market, green industry, and so on. These are the concrete demands of sustainable development for economic life. With the development of economy, society and science and technology and the increase of the population, the abundant ecological resources become more and more scarce [1]. So the quantity and quality of eco- logical resources can’t increasin… 相似文献
204.
农地利用技术是一个多层次的体系,它能在扩大耕地面积、提高土地利用率和耕地质量等多方面发挥重要作用。通过对“市场机制自发作用下的技术选择”和“政府引导下的技术选择”两种现实模式的探讨,认为技术创新具有外部性,土地利用更是具有明显的“外溢效应”,加上我国农业比较利益偏低和农地使用权流转市场发育不全带来的农地价格扭曲,常造成市场机制下技术创新的方向与资源稀缺状况不相符合的现象,从而带来资源配置的低效率。因此,适当的政府引导是必要的,也是有效的。 相似文献
205.
Summary. We prove existence of a competitive equilibrium in a version of a Ramsey (one sector) model in which agents are heterogeneous
and gross investment is constrained to be non negative. We do so by converting the infinite-dimensional fixed point problem
stated in terms of prices and commodities into a finite-dimensional Negishi problem involving individual weights in a social
value function. This method allows us to obtain detailed results concerning the properties of competitive equilibria. Because
of the simplicity of the techniques utilized our approach is amenable to be adapted by practitioners in analogous problems
often studied in macroeconomics.
Received: September 13, 2001; revised version: December 9, 2002
RID="*"
ID="*" We are grateful to Tapan Mitra for pointing out errors as well as making very valuable suggestions. Thanks are due
to Raouf Boucekkine and Jorge Duran for additional helpful discussions. We also thank an anonymous referee for his/her helpful
comments. The second author acknowledges the financial support of the Belgian Ministry of Scientific Research (Grant ARC 99/04-235
“Growth and incentive design”) and of the Belgian Federal Goverment (Grant PAI P5/10, “Equilibrium theory and optimization
for public policy and industry regulation”).
Correspondence to: C. Le Van 相似文献
206.
团队研讨教学模式在管理类课程中的运用 总被引:1,自引:0,他引:1
团队研讨教学模式是融团队管理理念、现代教育思想于教学实践过程,以教师为主导、以学生为本位,注重能力开发、素质培养的一种互动启发、探究式教学模式。该教学模式在教学实践中有助于激发学生学习热情,培养学习兴趣,有效培养团队合作意识、精神,提升科研能力、开拓视野、丰富知识,使学生在合作与竞争中不断激发创新精神,提高创新能力。 相似文献
207.
This paper develops a new technique for proving the existence and indeterminacy of monetary equilibria in money search models
with divisible money. Our technique is substantially simpler than standard constructive proofs in the literature.
This paper is based on the second half of Kamiya and Shimizu (2002). We are very grateful to the associate editor and an anonymous
referee of this journal for their very detailed suggestions and comments. This research is financially supported by Grant-in-Aid
for Scientific Research from JSPS and MEXT. The second author also acknowledges the financial support by Zengin Foundation
for studies on Economics and Finance. 相似文献
208.
Robert F. Mulligan 《The Review of Austrian Economics》2006,19(4):311-336
An Austrian interpretation of the New Keynesian small menu cost model of the business cycle is proposed. Austrian and New
Keynesian business cycle theories share the feature that the cycle is generated by rigidities which prevent the economy from
adapting instantaneously to changing conditions. Austrian business cycle theory is capital-based, focusing on credit expansion
which artificially lowers interest rates and causes an investment boom and unsustainable business expansion. In contrast,
the New Keynesian small menu cost model of the business cycle is based on nominal rigidities which prevent markets from clearing.
Small menu costs introduce dichotomous behavior, where firms find it locally optimal to avoid instantaneous output price adjustments
in the face of the cost, but this local optimum results in economy-wide output and employment fluctuations which are much
greater in relative magnitude. The small menu cost model of the business cycle is extended and reinterpreted in light of Austrian
business cycle theory with heterogeneous, multiply-specific capital, thus providing a rigorous formalization of the Austrian
business cycle. The Austrian interpretation of this New Keynesian model fortuitously addresses several of its shortcomings.
JEL classification B53, E12, E23, E32 相似文献
209.
Tetsuo Ono 《Economic Theory》2003,22(1):141-168
Summary. The purpose of this paper is to consider environmental taxation which would control emissions of firms in a model of growth
cycles. In the model presented below, the economy may experience two phases of growth and environmental quality: “the no-innovation
growth regime” and “the innovation-led growth regime”. Aggregate capital and environmental quality remain constant in the
no-innovation growth regime, while they perpetually increase in the innovation-led growth regime. The paper shows that the
tax plays a key role in determining whether the economy stably converges to one of the two regimes or fluctuates permanently
between them. It also shows that there is a critical level of the tax and that the economy obtains higher growth rates of
capital and environmental quality by raising (or reducing) the tax if the initial tax is below (or above) the critical level.
Received: April 2, 2001; revised version: March 21, 2002
RID="*"
ID="*" This research reported here was conducted within the research project “Project on Intergenerational Equity” at Institute
of Economic Research, Hitotsubashi University. I am deeply grateful to an anonymous referee for his or her insightful comments,
which greatly improved the paper. I also thank Hiroshi Honda, Yasuo Maeda, Yuji Nakayama, and participants in workshops at
Hitotsubashi University, Kyoto University, Nagoya University, Osaka University, University of Tsukuba, Yokohama National University,
and University of Tokyo for their valuable comments and suggestions. Any remaining errors are mine. 相似文献
210.
Kazuo NishimuraKoji Shimomura 《Journal of Economic Theory》2002,105(1):244-260
This paper introduces sector-specific externalities in the Heckscher-Ohlin two-country dynamic general equilibrium model to show that indeterminacy of the equilibrium path in the world market can occur. Under certain conditions in terms of factor intensities, there are multiple equilibrium paths from the same initial distribution of capital in the world market, and the distribution of capital in the limit differs among equilibrium paths. One equilibrium path converges to a long-run equilibrium in which the international ranking of factor endowment ratios differs from the initial ranking; another equilibrium path maintains the initial ranking and converges to another long-run equilibrium. Since the path realized is indeterminate, so is the long-run trade pattern. Therefore, the Long-Run Heckscher-Ohlin prediction is vulnerable to the introduction of externality. Journal of Economic Literature Classification Numbers: E13, E32, F11, F43. 相似文献