股价波动的本质特征是什么?——基于非线性动力学分析视角的研究

基于金融复杂性研究视角,采用非线性动力学分析方法,分析股市波动的本质特征与形成机制。结果表明股市波动具有显著的分形动力学特征与长期记忆效应;股票市场存在低维混沌,具有内生的不稳定性;股价行为有其内在的非线性动力学形成机制,揭示出金融市场的正反馈机制、投资者的异质性与相互影响是引发市场复杂行为的重要途径;提出了非线性金融理论的研究方向并阐明了对于金融实践的意义。     

An individual-based model for competingDrosophila populations

An individual-based model forDrosophila is formulated, based on competition amongst larvae consuming the same batch of food. The predictions of the model are supported by data for single speciesDrosophila populations reared in the laboratory. The model is used to build a simple discrete model for the dynamics ofDrosophila populations that are kept over a number of generations. The dynamics of a single species is shown to give either a stable equilibrium or fluctuations which can be periodic or chaotic. When the dynamics of a species in the absence of the other is periodic or chaotic, we found coexistence or two alternative states, on neither of which the species can coexist.     

关于高校学科队伍建设的几个问题

对高校学科建设中学科岗位设置,学科梯队成员的选拔、考核与培养,学科团队建设等问题进行了探讨.提出科学设置学科岗位可以增强学科带头人的责任意识,有利于学科建设目标的实现;学科梯队成员要通过竞争产生,要建立考核指标,按期对梯队成员进行考核,实现公平竞争、滚动发展;要把自身培养学科带头人与引进学科带头人结合起来;要加强学科团队建设和学科文化建设.     

关于创新我校人才队伍建设的思考

推进人才强国战略,教育事业尤其是高等教育事业起着基础性作用。在加快高等教育发展的进程中,高校自身的人才队伍建设工作至关重要。在新时期,加强我校人才队伍建设更是具有现实和长远意义。为此,在科学发展观引领下,结合我校人才队伍建设实际,提出我校人才队伍建设的总体要求和目标任务,从而为创新我校人才队伍建设提供一些有益的尝试和思考。     

Little naked pangs of the self: the real performance of the self and the function of trust in Goffman's action theory

The aim of this article is to discuss some of the leading features of Erving Goffman's action theory as an alternative to the ‘orthodox’ paradigms of sociology, viewed as a structuralist and functionalist science that defines social constructs by their shared rules and values, and as a drifting of action, in the sense of intention, toward an individualistic version. The author examines Goffman's shift of the focus of attention from the boundaries of a social sense of action to the social dialectic of ‘defining a situation’ (W. Thomas) as conducted by the social actors in a renewal of Simmel's ‘empowering covenants’ (wechselwirkung) in the multiple casual social connections that make up the ‘social buzz’ in a society. The author moreover discusses Goffman's action as a kind of playacting regulating cognitive and expressive face-to-face ‘traffic’ between the social actors. This relational dynamic creates an interactive play based on encounters – in which one's opening to another is fraught with risks of deception – regulated by trust as a central resource for social interactions. Trust, in its interpersonal and systemic variants, constitutes a universal social datum and an elementary precondition for social exchanges and the cooperation between individuals. Trust, thus, functions as comparer between reciprocal expectations and a regulator of freedom tending to the stability of the social system.     

基于知识共享的虚拟R&D团队治理机制研究

虚拟R&D团队是现代电子信息技术的产物,是未来团队的发展趋势,其有效的治理机制是企业核心竞争力的保障。本文立足于知识共享的角度,对虚拟R&D团队治理中最重要的三个机制——知识管理机制、产权机制和激励机制进行分析,并提出了治理方案。     

Urban tree cover: an ecological perspective

Analysis of urban tree cover is generally limited to inventories of tree structure and composition on public lands. This approach provided valuable information for resource management. However, it does not account for all tree cover within an urban landscape, thus providing insufficient information on ecological patterns and processes. We propose evaluating tree cover for an entire urban area that is based on patch dynamics. Treed patches are classified by their origin, structure, and management intensity. A patch approach enables ecologists to evaluate ecological patterns and processes for the entire urban landscape and to examine how social patterns influence these ecological patterns and processes.     

论新时期高校学生团队精神的培养

分析新时期高校学生团队精神培养的重要性,介绍高校学生团队的含义、组建团队过程中主要影响因素和团队精神的理论内涵,并重点阐述高校学生团队精神的主要培养模式和教育方法。     

全球化世界中的农村生计:重回阶级视角审视

文章认为，在现代全球化商品生产环境下，构建生产和再生产的社会关系从普遍意义上讲就是阶级关系，提出应重回阶级视角审视和分析农村贫困及其产生原因。在这一视角下对现代农地变迁进行探讨，并在提出当代农耕变化七个命题的基础上，识别了不同阶层关系下的动力机制和不同发展政策议题下隐含的阶级动力，并指出，现有关于改善农业生产、农村生计和福利的政策忽略了阶级不平等性，因此它们也忽略了贫困的根本社会基础以及不同干预对此带来的重要影响。     

和谐社会政治发展的动力机制和平衡机制（上）

和谐社会政治发展的运行机制主要包含动力机制和平衡机制。建立和健全适应和谐社会政治发展的动力机制,主要应从建设强有力的执政党和政府(政治发展的牵引力)、建设充满活力的国家政治体系(政治发展的内驱力)、建设自主自治的公民社会(政治发展的推动力)等方面入手;建立和健全适应和谐社会政治发展的平衡机制,应该努力实现政治价值性平衡(公平正义)、政治制度性平衡(权力制衡)、政治过程性平衡(协调有序)。