Evolution of harvesting strategies: replicator and resource dynamics

Abstract. Economic theories of managing renewable resources, such as fisheries and forestry, traditionally assume that individual harvesters are perfectly rational and thus able to compute the harvesting strategy that maximizes their discounted profits. The current paper presents an alternative approach based on bounded rationality and evolutionary mechanisms. It is assumed that individual harvesters face a choice between two harvesting strategies. The evolution of the distribution of strategies in the population is modeled through a replicator dynamics equation. The latter captures the idea that strategies yielding above average profits are demanded more than strategies yielding below average profits, so that the first type ends up accounting for a larger part in the population. From a mathematical perspective, the combination of resource and evolutionary processes leads to complex dynamics. The paper presents the existence and stability conditions for each steady-state of the system and analyzes dynamic paths to the equilibrium. In addition, effects of changes in prices are analyzed. A main result of the paper is that under certain conditions both strategies can survive in the long-run. Correspondence to: J. Noailly     

论中国特色社会主义经济学的核心范畴

确立中国特色社会主义经济学的逻辑起点，必须突出它的特殊性，而不能照搬以往的经济学。迄今，所有的经济学由于其任务和宗旨不同大体可分四种类型、四个逻辑起点。中国特色社会主义经济学根据它的任务和宗旨，需要在科学社会主义实践逻辑的基础上，进行科学抽象，分析其矛盾特殊性的三个表现及中国的个性，揭示以社会主义本质为核。范畴和逻辑起点的理论规定性，进而全面展开，创立新的架构。     

马克思就业理论与西方就业理论比较研究

对中国失业的研究已是无法回避的一个问题,而寻求理论支持则是进行研究的一个重要方向。检索就业理论的资料,可以发现最有代表性的就业理论是马克思就业理论和西方就业理论。因此,对这两种就业理论加以比较,理解它们形成的不同背景和分析路径,对比它们不同的内容体系,可以发现它们其实发掘的只是失业的一个方面,遵循的是失业发生、发展的一条路径。因此,在比较中更全面地理解失业,并且可以为研究我国的失业提供某些启示。     

法经济学及其在中国的应用

“法经济学”迄今并没有一个大家一致认可的、标准的定义。法经济学可从狭义和广义两个角度进行区分。广义地理解法经济学可以使我们的视野变得更为开阔，同时也拓展了法律与经济这个主题所涵盖的范围。法经济学在20世纪七八十年代得到了蓬勃发展，但进入90年代后则鲜有突破，所以，法经济学未来的发展方向已经成为当前法经济学面临的最主要的理论问题。最近几年来，越来越多的中国学者加入到法经济学的研究中来。法经济学在中国的兴起，与中国正在经历一个制度变迁的时代有关。     

Linking Public Investment to Private Investment. The Case of Spanish Regions

Public investment constitutes one of the main instruments of regional policies. The existence of a direct link between infrastructure and regional income per capita is usually accepted. Literature also describes a positive effect of public investment on private capital accumulation. This paper seeks to provide new empirical evidence on this latter relationship for the case of Spanish regions over the period 1965–1997 using panel data methodology. The results show a positive effect of productive and social public investment (especially in education) on private investment. The spillover effects generated by the productive infrastructures located in other regions do not seem to encourage the private investment in neighbouring regions. Public consumption and interest rate exert a negative influence on private capital accumulation. These results are robust to changes in the econometric specification.     

物流服务市场供求关系研究

从认识物流服务市场的供求现状出发,使用经济学理论、竞争理论、物流业固有特性三个分析方法进行物流服务市场供求关系研究,对揭示我国物流服务市场的运行规律有一定的引导作用。     

西方经济学资本计量困境与马克思经济学的科学论断

资本计量既是重要的理论问题,也是涉及微观经济活动的现实问题。在资本计量问题上,西方经济学由于对资本概念内涵有着不同的理解,提出了许多不同的计量方法。这些方法有的在理论上存在逻辑问题,有的与现实经济生活相差较远。本文认为,马克思主义经济学对资本概念的理解既解决了资本计量的理论问题,又符合现实经济生活中会计实践需要,科学地揭示了资本实质,对经济生活具有根本的指导意义。     

新制度经济学视角下会计发展:动因与启示

本文从新制度经济学的视角,从制度、产权和交易费用等角度对会计和会计理论发展史进行分析,认为制度是推动会计和会计理论不断发展的重要动力;经济发展水平决定会计发展水平;产权、交易费用与会计之间内在逻辑的一致性诞生了产权会计学派,公允价值计量是产权会计学派的历史选择。     

从产业经济学角度浅论我国物流业的发展

从产业经济学的基本理论入手,探讨如何正确认识我国的物流产业及其在国民经济中的地位,并结合我国实际,研究和评价我国物流产业的总体发展水平,分析物流产业的发展对策。     

Method in Experiment: Rhetoric and Reality

The methodological ideal of experimentalists, E, is easily stated: derive a testable hypothesis, H, from a well-specified theory, T; implement experiments with a design; implicitly in the latter are auxiliary hypotheses, A, that surface in the review/discussion of completed research reports (payoffs are 'adequate,' Ss are 'relevant,' instructions, context are 'clear,' etc.). We want to be able to conclude, if statistical test outcomes support not-H, that T is 'falsified.' But this is not what we do; rather we ask if there is a flaw in the test, i.e. not-A is supported, and we do more experiments. This is good practice—much better than the statistical rhetoric of falsificationism. Undesigned social processes allow E to accumulate technical and instrumental knowledge that drive the reduction of experimental error and constitute a more coherent methodology than falsificationism.