ANALYSIS OF REGIONAL ECONOMY GROWTH WITH THE THEORY OF DIFFERENTIAL SYSTEM DYNAMICS

In order to describe the interrelation forces among different regions during the economic growth, this paper introduces and analyzes the dynamical system model with the theory of differential systems dynamics. A practical example based on a simplified model is given to analyze the dynamical process of Sichuan economy growth.     

SOME DEVELOPMENTS IN THE STUDIES OF META—SYNTHESIS SYSTEM APPROACH

In the early 1990s, Professor Qian Xuesen(Tsien HsueShen)and his colleagues proposed theMetasynthesis system approach for solving the open complex giant system problems. The methodemphasizes the synthesis of collected information and knowledge of various kinds of experts, andcombining quantitative methods with qualitative knowledge. Later it is evolved into Hall of Workshopfor Meta-Synthetic Engineering (HWMSE)which emphasizes to make use of breaking advances ininformation technologies. Then continuous endeavors have been taken to put those ideas into practice.With tremendous advances in networking and distributed computing technologies, past difficulties inimplementation are disappearing together with further understandings of HWMSE and fruitful resultsachieved in similar or relevant research fields in recent years in China. In this paper some of thosedevelopment are introduced, together with some parallel research work abroad.     

CHARACTERISTIC ALTERNATING-DIRECTION FINITE ELEMENT METHODS FOR NONRECTANGULAR REGIONS FOR COUPLED SYSTEM OF DYNAMICS OF FLUIDS IN POROUS MEDIA AND ITS ANALYSIS

For coupled system of multilayer dynamics of fluids in porous media, the characteristic alternating-direction finite element methods for nourectangular regions applicable to parallel arithmetic are put forward and two-dimensional and three-dimensional schemes are used to form a complete set. Some techniques, such as calculus of variations, isoparametric transformation, patch approximation, operator-splitting, characteristic method, negative norm estimate, energy method, the theory of prior estimates and techniques are used. For the nourectangular regions case, optimal order estimates in L^2 norm are derived for the error in the approximation solution. Thus the well-known theoretical problem has been thoroughly and completely solved. These methods have been successfully used in multilayer oil resources migration-accumulation numerical simulation.     

META-SYNTHESIS APPROACH TO EXPLORING CONSTRUCTING COMPREHENSIVE TRANSPORTATION SYSTEM IN CHINA

1 Introduction Transportation is a basic and indispensable element in social economic development Great achievements have been reached intransportation in China since the adoption of reform and opening policy in 1978 To meet the continuously increasing demands from the socioeconomic development for a harmony andwell-off living society, a national integrative transportation system instead of separate planning by individual transport mode has been under consideration to deal with old and emergin…     

GROUP SIZE AND PARALLELISM EFFECTS IN TASKS WITHHETEROGENEOUS LEVELS OF DIFFICULTY：A STOCHASTIC ORDER APPROACH

We consider tasks where in order to perform them it is sufficient that one member of a group will know how to do it. We are interested in the effect of task difficulty, and variability of that difficulty, on group performance, and in particular on the marginal contribution of an additional number to the performance of groups of different size. We explore the implications of various stochastic orders over task difficulty and variability. Some intuitive conjectures are shown to be false.     

STRATEGIC EXERCISE OF REAL OPTIONS：INVESTMENT DECISIONS IN TECHNOLOGICAL SYSTEMS

Viewing investment projects in new technologies as real options, this paper studies the effects ofendogenous competition and asymmetric information on the strategic exercise of real options. We firstdevelop a multi-period, game-theoretic model and show how competition leads to early exercise andaggressive investment behaviors and how competition erodes option values. We then relax the typicalfull-information assumption found in the literature and allow information asymmetry to exist acrossfirms. Our model shows, in contrast to the literature that payoff is independent of the ordering ofexercise, that the sequential exercise of real options may generate both informational and payoffexternalities. We also find some surpising but interesting results such as having more information isnot necessarily better.     

知识转移与网络组织的动力学行为模式( Ⅱ) :吸收能力与释放能力

针对网络组织的知识转移过程中知识释放者与吸收者之间的双向互动作用,根据知识的吸收能力提出了网络组织中成员的知识释放能力的概念,分析了网络组织中成员的知识释放能力的差异性,进而分别从随机性和确定性释放能力两个角度,利用仿真分析,探讨了知识转移过程中网络组织结构的动力学行为模式.     

生产能力扩大的系统动态性研究

利用系统动力学的原理和建模方法描述了企业生产能力与企业物流、信息流与资金流所涉及的各种计划、生产、采购、仓储、销售及财务等职能的关系，利用因果环路图研究分析了生产能力与库存水平、交货期、市场份额、产品价格、成本、利润率、人力等多种因素的因果反馈关系，并构建了生产能力扩大的系统动力学模型来刻画其变化的复杂性与动态性，在两种市场需求（阶跃需求和泊松流随机需求）下模型的仿真结果表明，该模型能较好的反应生产能力扩大的动态行为。     

主权风险溢出网络动态特征研究:以“一带一路”国家为例

随着金融市场全球化的逐步深入以及世界各国政治联系的越发紧密,主权风险跨国传染现象得到了现实的印证.在一带一路倡议强化本区域国家间政治金融联系的背景下,从主权风险网络化和区域国家集团化视角出发,借鉴基于方差分解的溢出指数方法,考察了一带一路沿线国家主权风险溢出网络的节点特征和结构特征,并探究了沿线国家整体以及不同区域国家集团主权风险溢出效应的动态性特征.研究发现:一带一路沿线25国主权风险总溢出效应较高,且中东欧区域国家集团在沿线国家主权风险溢出网络中处于主导地位.另外,沿线国家间的整体主权风险溢出效应随时间表现出明显的动态性特征和阶段性特征,中国与东盟集团之间的主权风险溢出效应在任何阶段总是最强的,而中东欧地区是最能代表沿线国家整体主权风险溢出效应变化的区域国家集团.这些发现对于宏观政策制定者、主权债及相关衍生品市场的投资者理解沿线区域主权风险溢出网络的本质特征和内在结构具有重要的指导意义.     

基于SD-GM循环预测理论的机动车污染物收费政策效应分析

本文从减排和缓堵两层视角,基于北京市2005-2017年的相关数据,构建了城市机动车污染物减排管理模型.首先,采用系统动力学与灰色预测理论相结合的方法来构建表函数,从而提高了参数的预测精度,并提出了一种新的系统动力学建模方法.其次,采用整体性检验法(如关联度合格检验)对模型进行验证,克服了局部性检验方法的一些不足.再者,对低、中、高三类方案进行了模拟,结果显示:低收费政策具有"双拐点效应",中-高收费方案间存在"边际递减效应",最后,以中等收费方案为例,对机动车CO,HC,NO_x和PM总量(减排效果)以及车均道路面积(缓堵效果)等主要变量进行中长期的动态仿真,结果表明:适度的收费能够实现减排和缓堵的"双赢",特别的,从短期来看,高收费方案的效果比较显著,但从长期视角来考虑,这种效果将逐渐被消弱.据此,能够为政府交通部门及环保部门提供决策依据.     

研发存量、知识溢出效应和产出空间依赖性对我国高新技术产业产出的影响

首先基于新增长理论构建了高新技术产业研发积累与产出增长的理论模型,然后根据新经济地理学中的中心-外围理论分区域构建了空间面板计量经济模型,估计结果表明,各地区高新技术产业中研发投入的高回报特征得到了充分体现,并且,各地区高新技术产业中心省份向外围的知识溢出效应对产出增长具有差异化影响. 总体而言,高新技术产业各地区内产出的空间依赖性具有正向促进作用. 高新技术产业中的实物资本和劳动对产出增长的贡献显著. 政府应引导中心省份加大研发投入并将产出和研发活动向外围转移,增强产出的带动效应和研发的溢出效应.     

航天企业基于知识流的知识管理体系框架

针对航天企业实施知识管理的薄弱环节,从系统工程角度出发,在简述企业知识管理体系基本功能的基础上,提出了基于知识流的知识管理体系框架和主要设计原则。重点阐述了基于知识流的航天企业知识管理框架模型和知识管理体系框架,并针对航天企业科研生产一体化的特点,分析了航天型号全寿命过程中从预研到研制过程的知识管理流程,以及研制过程与批生产过程的知识集成模式。对知识管理体系框架下科研生产一体化的发展趋势进行了初步探讨。     

航空制造企业技改项目管理动态特性仿真研究

在分析航空制造企业技术改造（简称技改）项目管理整体动态控制特点的基础上,利用因果环路图描述了项目阶段、控制对象和资源能力等各方面因素的动态反馈关系。通过建立技改项目管理系统动力学模型描述了技改项目管理的动态流程,以及进度控制、质量控制和资源能力管理等过程。3种典型情况（理想情况、工期压缩和验收质量下降）下模型的仿真表明,该模型能够较好地反映技改项目管理过程中的各类复杂动态特性,并能够辅助技改项目管理和决策。     

武器装备体系的技术成熟度评估方法

武器装备体系的技术成熟度描述了体系建设的整体技术状态与水平, 在武器装备体系建设管理中是重要的评估与分析内容. 在单项技术成熟度评估的基础上, 建立了装备系统技术成熟度、武器装备体系技术成熟度的评估方法. 通过对武器装备体系技术成熟度评估结果的深入分析, 可以定位体系建设中的瓶颈装备系统与关键技术, 支撑项目管理工作. 所附算例说明了方法的有效性.     

高技术企业技术创新网络的系统动力学建模与仿真

在深入分析高技术企业技术创新网络系统的构成要素及各要素相互关系的基础上,建立了能够刻画高技术企业技术创新网络发展变化的因果关系图与系统动力学模型。并用系统动力学建模工具软件Vensim实现了该模型.同时采用国家高技术产业统计年鉴公布的数据,对模型的有效性进行了验证,实验结果表明模型计算出来的数据与实际数据非常吻合.表明系统动力学方法能够有效模拟协作研发、标准化以及知识转移对高技术企业技术创新网络的发展影响.作为模型的应用,对今后几年高技术企业技术创新网络系统的关键指标进行了预测,并提出了为提高关键指标应采取的措施,为管理决策提供了参考依据.