To improve customer satisfaction of cold chain logistics of fresh agricultural goods enterprises and reduce the comprehensive distribution cost composed of fixed cost, transportation cost, cargo damage cost, refrigera...To improve customer satisfaction of cold chain logistics of fresh agricultural goods enterprises and reduce the comprehensive distribution cost composed of fixed cost, transportation cost, cargo damage cost, refrigeration cost, and time penalty cost, a multi-objective path optimization model of fresh agricultural products distribution considering client satisfaction is constructed. The model is solved using an enhanced Elitist Non-dominated Sorting Genetic Algorithm (NSGA-II), and differential evolution is incorporated to the evolution operator. The algorithm produced by the revised algorithm produces a better Pareto optimum solution set, efficiently balances the relationship between customer pleasure and cost, and serves as a reference for the long-term growth of organizations. .展开更多
本文主要介绍了在AutoCAD2005平台下的船舶管系支架系统,此系统以Viusal studio 2002和ObjectARX2005为开发工具,实现了管子支架的智能化设计。管子支架设计系统提供了11种标准管子支架,每一种管子支架又可以衍生出2～4种变体,这样基本...本文主要介绍了在AutoCAD2005平台下的船舶管系支架系统,此系统以Viusal studio 2002和ObjectARX2005为开发工具,实现了管子支架的智能化设计。管子支架设计系统提供了11种标准管子支架,每一种管子支架又可以衍生出2～4种变体,这样基本上能满足船舶生产设计中管子支架的设计。本系统主要的特点是,能灵活创建形状复杂的组合式支架,能够自动的由设计好的管子支架三维图形生成二维工程图,用于管子支架的生产和安装。展开更多
By formulating the design of customized product as a multi-objectiveoptimization problem, a method for designing customized product according to the relative importanceof customer needs is proposed. This method search...By formulating the design of customized product as a multi-objectiveoptimization problem, a method for designing customized product according to the relative importanceof customer needs is proposed. This method searches for the optimal design that maximizes customersatisfaction by establishing mapping from design attributes to the degree of customer satisfactionon-each customer need. A window product is taken as an example for case study. The result indicatesthat this method is feasible.展开更多
服务工人作为企业执行MRO(Maintenance,repair and overhaul)服务的核心资源,其调度方案的优劣直接决定了MRO服务的运营效率和成本高低。当前,随着MRO客户需求的个性化与差异化,以及需求场点的高度分散性,以往的调度理论表现出明显的局...服务工人作为企业执行MRO(Maintenance,repair and overhaul)服务的核心资源,其调度方案的优劣直接决定了MRO服务的运营效率和成本高低。当前,随着MRO客户需求的个性化与差异化,以及需求场点的高度分散性,以往的调度理论表现出明显的局限性,亟需开展针对性的调度决策理论研究。为此,提出一个涉及多类别客户约束的多场点复杂装备MRO服务工人调度问题。在该问题中,根据客户的质保属性和认可度,将客户划分为三类:质保期内的保内客户、质保期外且具有一定认可度的一般客户,以及无容忍度的临时客户。并以最大化服务总收益和最小化最大完工时间为优化目标构建了其数学模型。其次,基于NSGA-Ⅱ提出一个改进算法——MNSGA来求解问题。为了优化算法性能,设计了基于问题特性的初始化规则和局部搜索算子。最后,基于测试集和实际数据构建多组不同规模的算例,并设计了一系列试验。数值试验结果显示,所提算子能有效提高MNSGA性能。与其他知名算法对比,验证了MNSGA的有效性和竞争力。展开更多
文摘To improve customer satisfaction of cold chain logistics of fresh agricultural goods enterprises and reduce the comprehensive distribution cost composed of fixed cost, transportation cost, cargo damage cost, refrigeration cost, and time penalty cost, a multi-objective path optimization model of fresh agricultural products distribution considering client satisfaction is constructed. The model is solved using an enhanced Elitist Non-dominated Sorting Genetic Algorithm (NSGA-II), and differential evolution is incorporated to the evolution operator. The algorithm produced by the revised algorithm produces a better Pareto optimum solution set, efficiently balances the relationship between customer pleasure and cost, and serves as a reference for the long-term growth of organizations. .
文摘本文主要介绍了在AutoCAD2005平台下的船舶管系支架系统,此系统以Viusal studio 2002和ObjectARX2005为开发工具,实现了管子支架的智能化设计。管子支架设计系统提供了11种标准管子支架,每一种管子支架又可以衍生出2～4种变体,这样基本上能满足船舶生产设计中管子支架的设计。本系统主要的特点是,能灵活创建形状复杂的组合式支架,能够自动的由设计好的管子支架三维图形生成二维工程图,用于管子支架的生产和安装。
基金This project is supported by National 863 Hi-tech Foundation of China (No. 2003AA414024)Doctoral Foundation of Chinese Universities, China(No.20030611008).
文摘By formulating the design of customized product as a multi-objectiveoptimization problem, a method for designing customized product according to the relative importanceof customer needs is proposed. This method searches for the optimal design that maximizes customersatisfaction by establishing mapping from design attributes to the degree of customer satisfactionon-each customer need. A window product is taken as an example for case study. The result indicatesthat this method is feasible.
文摘服务工人作为企业执行MRO(Maintenance,repair and overhaul)服务的核心资源,其调度方案的优劣直接决定了MRO服务的运营效率和成本高低。当前,随着MRO客户需求的个性化与差异化,以及需求场点的高度分散性,以往的调度理论表现出明显的局限性,亟需开展针对性的调度决策理论研究。为此,提出一个涉及多类别客户约束的多场点复杂装备MRO服务工人调度问题。在该问题中,根据客户的质保属性和认可度,将客户划分为三类:质保期内的保内客户、质保期外且具有一定认可度的一般客户,以及无容忍度的临时客户。并以最大化服务总收益和最小化最大完工时间为优化目标构建了其数学模型。其次,基于NSGA-Ⅱ提出一个改进算法——MNSGA来求解问题。为了优化算法性能,设计了基于问题特性的初始化规则和局部搜索算子。最后,基于测试集和实际数据构建多组不同规模的算例,并设计了一系列试验。数值试验结果显示,所提算子能有效提高MNSGA性能。与其他知名算法对比,验证了MNSGA的有效性和竞争力。
