Workers’ enterprises are not perverse: differential oligopoly games with sticky price

We take a differential game approach to study the dynamic behaviour of labour managed (LM) firms, in the presence of price stickiness. We find that the oligopoly market populated by LM firms reaches the same steady state equilibrium allocation as the oligopoly populated by profit-maximising (PM) firms, provided that the LM membership and the PM labour force are set before the market game starts. The conclusion holds under both the open-loop solution and the closed-loop solution. The result confirms the point made by Sertel (Eur Econ Rev 31:1619–1625, 1987) in a static framework.     

信息中介参与电子商务系统的系统动力学分析

信息中介通过一定的营销手段推荐用户购买其感兴趣的产品或服务,这不仅使信息中介获利,还增加了第三方平台产品或服务的销量。本文研究了一个考虑信息中介参与的电子商务系统,首先对信息中介参与的电子商务系统的流程和功能进行了分析;然后,分析了信息中介个性化推荐的因果关系图和第三方电子商务平台的因果关系图;其次,根据因果关系图构建了有信息中介参与的电子商务系统动力学模型;最后,利用Vensim PLE对构建的系统动力学模型进行模拟,结果表明：若要增加整个系统收益和发展水平,应增加信息中介的用户数量,增加用户对推荐的信任,并提高信息中介、第三方电商平台和卖家的服务水平。     

城市交通低碳发展策略的系统动力学分析——基于土地利用视角

随着城市环境的恶化,城市低碳交通建设迫在眉睫。本文从土地利用角度构建城市交通碳排放与土地利用的系统动力学模型,得出城市交通低碳发展的两种策略,并以长春市为例,对两种策略方案进行了仿真分析。结果表明,提高土地利用强度和增大土地混合利用程度均能使交通碳排放减少,而且增加土地多样性程度的实施效果要优于土地利用强度的提高。     

Dynamic complexity in a Keynesian growth-cycle model involving Harrod's instability

This paper develops a Keynesian macrodynamic model, where some recent reinterpretations of Harrod's dynamics are embodied. Its main purpose is to prove that Harrod's instability principle may give rise to a chaotic motion (specifically a il'nikov scenario) around two equilibrium points: a steady-state unstable equilibrium, whose value depends on parameters defining the technical-progress dynamics, and a stationary state of zero growth. Furthermore, since it allows for a variable growth rate of labor productivity and assigns a key role to expectations, this model comes closer to modern theories of economic growth and endogenous business cycle.     

Firm survival: methods and evidence

This paper surveys the Industrial Organization literature on firm survival. We find that, in retrospect, the econometric specifications used in this area have progressively become more sophisticated, addressing issues such as discrete time, unobserved heterogeneity and competing risks. We also identify a number of firm- and industry-specific covariates that provide largely consistent results across samples, countries and periods. On the other hand, the evidence is less clear-cut with regard to ownership and spatial factors.

Output dynamics,flow equilibria and structural change—A prolegomenon to evolutionary macroeconomics

In an evolutionary approach to macroeconomics, the market disequilibrium dynamics resulting from structural change need to be properly represented at the aggregate level. As suggested by the late F.A. Hayek, a suitable equilibrium concept required to this end as a frame of reference, is that of a flow equilibrium. The paper explores the corresponding flow dynamics that draw attention to variables not usually considered in macroeconomic theorizing. Using statistical estimates for these new variables for the West German manufacturing sector during the German unification process allows some important new insights on the relationships between structural change and macroeconomic performance.

动态竞争的教研“合一”:文化双融整合

如何整合教学与研究是学界的一个关键议题,但目前却鲜有学者探讨。在西方,教学与理论研究往往是同床异梦,而在东方,学者依循教学和研究"合一"的传统哲学理念。尊崇儒家传统的中国学者并不仅仅投身于西方同僚所关注的教学和研究—发表工作,他们的第一要务在于秉持有教无类、关怀社稷的精神,成为一名受人敬重的教师。本文以形成于西方的动态竞争理论为例,说明教学与研究如何平衡与整合,达到传统东方教育理念中的"合一"。本文希望在教学与研究之间搭建桥梁,为试图将理论引进课堂的学者,或是意欲拓展研究范畴的研究者提供指导。本文提出一个本质性的问题:在现代中国和全球的环境下,"学术"在管理学等应用学科领域中有何意涵?     

基于生态足迹模型对新疆可持续发展的动态分析

生态足迹是分析国家或地区自然资源可持续里用的重要指标.本文利用FAO数据、新疆统计年鉴等自然资源生产与消费数据、人口数据,采用可变世界单产法计算了1988～2005年新疆维吾尔自治区生态足迹.结果表明:从1988～2005年间,新疆的人均生态足迹显著上升,从1995年开始出现生态赤字且有逐渐加大的趋势.生态协调系数DS显示,1996年后新疆的资源利用超出生态环境的承载范围,其发展模式是不可持续的.     

Is there a life cycle in all industries? First evidence from industry size dynamics in West Germany

We propose a novel nonlinear regression approach to test whether the size of industries develops over time along the stylized pattern assumed by the industry life cycle theory. We apply our model on data covering the full spectrum of 205 NACE industries including services in West Germany between 1976 and 2009 and four indicators describing industry size (employment, establishments, entries and exits). The results of our large scale analysis show that in most industries indeed size develops along a cyclical path, albeit this development is not universal. Furthermore, we provide first empirical evidence on service industries where we show that the number of establishments and employees frequently develop in line with what is found for most (product) industries.     

基于系统动力学的房地产营销长鞭效应研究

结合我国房地产业发展现状,本文从需求预测偏差、价格波动和房地产开发的价值链5个方面论述了房地产营销长鞭效应的成因,探讨了对房地产营销长鞭效应进行预警和调控的理论分析与措施。