光学表面的分形结构和表征算法

根据光学表面在微观结构上呈现出的统计自相似性，利用与尺度无关的分形模型描述了光学表面的结构特征，采用结构函数法对分形维数进行计算，分析了抛光表面的分形特点。在此基础上，提出了采用一阶自回归分形模型对抛光表面进行模拟的新方法，分析了界定尺度、模型参数对分形特征和分形维数的影响规律。     

金属腐蚀形貌的分形特性研究综述

介绍了分形理论及其特点,简要论述了自相似分形分维和多重分形谱分析方法,对它们在整体腐蚀形貌、点蚀形貌、应力腐蚀、腐蚀机理等方面的应用进行了阐述,比较了两种分形方法的应用特点,分析了今后分形理论在腐蚀领域中的应用趋势。     

IFS分形半乘积的维数关系及其应用

在分形乘积理论的基础上,研究了迭代函数系统（IFS）分形半乘积的维数关系。提出了分形半乘积的定义,用来研究不完全IFS乘积变换时,原分形与乘积分形之间的相互关系以及IFS变换对分形维数的影响。证明了IFS分形乘积与其所有分形半乘积之间的维数关系,并且根据自相似集的具体特点对它的分形半乘积进行了初步探讨。最后给出了由IFS分形乘积以及分形半乘积绘制三维分形图的应用实例。     

基于电子商务的汽车行业供应链管理模式研究

在分析了汽车行业供应链和供应链上核心企业特点的基础上，提出了以汽车制造企业为核心的汽车行业供应链结构模型以及物流的创新模式，构建了基于电子商务的汽车行业供应链管理的理想模式，并详细分析了此种模式的特点，为汽车行业实施电子商务提供了建设性的建议。     

基于效率型供应链模型的跨境供应链协同

在分析跨境供应链多种协同问题的基础上,以效率型供应链模型为例,对某制造企业的供应链信息系统进行分析,通过对组织协同、业务协同、技术协同3个层面的整合,逐步实现信息系统集成,很好地解决了跨境供应链的协同问题.     

绿色供应链绩效评价的模型研究

分析了传统供应链相对于绿色供应链绩效评价的不足之处,针对绿色供应链管理的特征,给出了绿色供应链管理绩效的影响因素.借鉴供应链绩效评价指标和绿色环保指标,运用专家调查法构建了由五个一级指标:账务价值、客户服务、成本费用、业务流程和环境绩效构成的绿色供应链绩效评价的指标体系.在此基础上,运用多级指标的模糊综合评价法,建立了指标体系的评价模型,该模型较准确、客观地度量了绿色供应链的整体绩效,论文通过实例验证了该评估模型的有效性和正确性.     

分形论在材料科学中的应用

介绍若干材料中的分形凝聚模型:扩散限制凝聚(DLA)模型、动力学集团凝聚(KCA)模型和扩散与化学限制凝聚(DCLA)模型;着重讨论了材料科学中分形研究的新进展:电化学分形生长、表面分形、高分子聚合物分形、准晶分形、薄膜中的分形凝聚、纳米半导体分形生长和断裂面的分形性质。     

材料断口分形研究现状及发展前景

讨论了分形几何应用于断裂研究的几个基本问题,主要包括断面的分形特征与分形测量,分维与断裂韧性的关系以及金属断裂的多种分形模型.进一步阐述了分形理论在金属断裂方面的应用前景.     

泡沫铝微结构的分形特及与子L隙率的关系研究

采用分形理论对泡沫铝材料微结构进行了研究,利用面积周长分维算法证明了其微结构在一定尺度内具有自相似性的分形特征.利用Siterpinski地毯模型研究了包沫铝孔隙率与分维之间的关系.研究结果表明.引入分形维数的分析模型能够较好地反映泡沫铝微结构与孔隙率之间的关系.     

用MAXScript脚本语言生成分形图形

介绍了分形生成技术的原理与性质、MAXScript脚本语言的特点及功能，详细叙述了用MAXScript脚本语言生成分形图形的设计思想和实现方法。针对分形几何的特点，以具有严格自相似性的分形树为例，通过解释源代码、描述程序运行过程和结果，以及对生成的图片用3DSMAX进行再处理，分析了在3DSMAX环境中用MAXScript脚本语言生成分形图形这一新方法的优点和不足。     

A fractal perspective-based methodological framework for supply chain modelling and distributed simulation with multi-agent system

With the development of global economy, supply chain, as a recognised complex system, is becoming more complex for analysis. In this context, it is worth introducing the perspective of complex system in perceiving and modelling of supply chain system to address its dynamic, stochastic and uncertain characteristics. Therefore, this paper proposes a methodological framework of supply chain modelling and simulation based on the fractal perspective, and presents an all-round and systematic exposition of concept modelling and distributed simulation by means of multi-agent technology. In this framework, different supply chain scenarios focusing on manufacturing, inventory and transportation can be easily modelled and simulated at different scales and levels. In addition, a prototype system which implements the methodological framework and the key implementation techniques are presented as well. Finally, a supply chain example, which supposes manufacturer as the core member, is modelled and simulated with the prototype system to illustrate the effectiveness of the proposed framework.     

基于CAS的供应链网络结构动态分析

介绍了复杂自适应系统理论(CAS)的基本含义、特征及其在进行仿真研究上的优势,分析了供应链网络系统就是一个CAS系统,建立了基于CAS的供应链网络进化仿真模型,并进行了仿真研究,通过对仿真结果的分析揭示了供应链网络系统动态变化的规律。     

Supply chain resilience for single and multiple sourcing in the presence of disruption risks

This paper investigates the use of sourcing strategies to achieve supply chain resilience under disruptions. The coping strategies considered are single and multiple sourcing, backup supplier contracts, spot purchasing, and collaboration and visibility. Collaboration and visibility, which affect suppliers’ recovery capabilities and a buyer’s warning capability, have not been similarly modelled in the past. A scenario-based mathematical model is developed such that it considers objectives under uncertainties including disruption risks and operational risks. A broad numerical study examines its output for various risk attitudes in a decision-maker, ranging from risk neutral to risk averse. The sensitivity of procurement strategies to other key parameters such as recovery and warning capabilities is examined. One of the major findings is that buyer’s warning capability plays a vital role in enhancing supply chain resilience. We seek to build on these efforts to further support disruption planning and mitigation and to obtain a deeper understanding of the relationship between supply chain characteristics and resilience.     

A green supply chain is a requirement for profitability

Many companies are not dramatically changing to more sustainable environmental practices despite pressure from the investment community, the government and consumers. This study explores a simple model that companies can use to understand and improve supply chain sustainability practices. It applies this model in two case studies, Coca-Cola, a leader in global sustainability, and Apple, a company that has only recently started to develop a sustainability strategy. The model was developed through a review of existing research and an application of supply chain principles. The results of this study demonstrate that following this model to eliminate waste throughout the supply chain will make the supply chain more profitable. The outcomes from this study highlight the importance for every company to do so in order to stay competitive. This study is unique in the relative simplicity of its model, combined with the supporting evidence that a sustainable supply chain is the same as a supply chain that is using best practices to reduce waste.     

Additive manufacturing technology in spare parts supply chain: a comparative study

Additive Manufacturing (AM) technology has the potential to significantly improve supply chain dynamics. The purpose of this paper is to investigate the impact of AM on spare parts supply chain. Three supply chain scenarios are investigated in this paper, namely conventional supply chain, centralised AM-based supply chain and distributed AM-based supply chain. Based on system dynamics simulations, this paper specifically compares three supply chain scenarios, in terms of total variable cost and carbon emission. The results show the spare part supply chain utilising AM is indeed superior to the traditional one in sustainable performance. It is also expected that AM can facilitate the spare parts supply chain to achieve more economic benefits along with its development. To our knowledge, this paper is one of the early studies that explores the impact of AM on supply chain performance and quantitatively examines the superiority of utilising AM in spare parts supply chain. Some suggestions are also provided to help managers adopting AM in their spare parts supply chains.     

供应链网络社会责任风险传导研究

在构建基于核心企业多层供需供应链网络拓扑结构模型基础上,建立了社会责任风险在供应链网络中传导概念模型和数学模型,并通过对我国乳制品业实证分析验证了模型有效性。研究结果表明:供应链网络拓扑结构和节点自适应性导致风险在传导过程中不仅表现出传递性等一般特性,还具有转换性、反馈性、可控制性、非线性和复杂性等特性;供应链网络复杂性导致了供应链网络中社会责任风险涌现。     

基于缩短供应链响应周期的运作模式研究

通过分析总结推动式和拉动式供应链的特点及对用户需求响应时间的变化，阐明基于延迟策略的推-拉结合式供应链的综合优势，提出利用延迟和压缩提前期的方法缩短供应链的响应周期；论述了对于不同生产类型企业为缩短响应时间可以采取不同的供应链运作模式；构建了基于延迟策略的模块化供应链模型，描述了该模型的运作流程以及实施中应注意的问题。     

基于SPSS的自适应供应链节点配置

摘要： 在简化的二阶供应链基础上,使用SPSS Clementine构建了自适应供应链节点配置的数据流模型,把历史订单数据的有效信息（采购量、提前期、价格等）作为训练数据,使用C5.0算法模型进行学习与训练,得到最佳供应商选择的规则集。并使用收益图和提升图对C5.0决策模型进行评价,结果表明该模型质量较好。然后使用模拟订单数据进行验证,并得到了最优的供应商选择结果,且置信度达到了满意水平。