物流配送中心综合决策支持系统的设计

近年来,随着物流配送中心自身的不断发展,配送技术的日益改进,配送中心业务量的不断增大,仅仅靠以业务处理为主的MIS难以胜任管理者日益增长的辅助决策需要。因此,建立物流配送中心的决策支持支持系统成为必然要求。以某物流配送中心决策支持系统建设为背景,设计了物流配送中心综合决策支持系统的总体功能模块和系统的集成架构并详细介绍了数据库数据仓库、知识库、模型库的设计。     

基于GIS的粮食配送决策支持系统分析与设计*

以粮食物流企业的配送问题为背景,结合GIS理论和方法,对粮食物流配送决策支持系统进行了系统分析。首先结合粮食物流配送决策支持系统的数据需求,详细分析了数据库系统的结构;然后根据粮食物流配送的决策问题,研究分析了粮食物流配送决策支持系统中配送中心选址优化以及粮食配送过程中车辆路线规划等核心模块,并对模型库系统中的模型进行了设计。建立了基于GIS的粮食物流配送系统模型,为GIS应用于粮食物流配送决策支持系统(GLD_DSS)提供了较实用的指导性方案。     

GIS环境下的物流配送中心选址模型与算法研究

物流配送中心是现代物流的重要组成部分。在规划配送中心时,合理的配送中心选址可以大大降低配送中心的运营成本和建造成本。本文提出了一种物流配送中心选址模型,并设计了遗传算法与线性规划相结合的计算方法。     

基于GIS的粮食物流配送系统

结合粮食物流配送系统的数据需求,详细地分析r粮食物流数据库系统的结构;然后根据粮食物流配送的决策问题,研究分析了粮食物流配送决策支持系统中配送中心选址优化以及粮食配送过程中车辆路线规划等核心模块,并对模型库系统中的模型进行设计。建立了基于GIS的粮食物流配送系统模型,并在实际中得到应用。     

药品物流配送系统的分析与设计

虽然国内医药配送中心纷纷建立,但极不规范且物流化程度较低.本课题以药品物流配送系统的分析与设计为研究对象,以系统设计的基本步骤为指导,对药品物流配送系统进行分析,最后设计出一个界面清晰、有实用价值的药品物流配送系统,为医药配送中心的建设提供一个可参考的框架体系。     

军事物流配送中心选址模型的构建

研究了军事物流配送中心优化选址建模问题。针对当前军事物流配送因为涉及变量多,关联程度强难以进行选址的难题,为加强选址的科学决策,对军事物流配送中心概念进行了界定,在明确军事物流选址的流程、步骤和一定数目的备选配送中心的基础上,采用离散二进制PSO解决配送中心的选择问题,建立了根据粒子群优化算法的军事物流配送中心选址优化模型。通过实例验证,模型构建科学合理,降低了计算的复杂度,优化了选址模型,为解决军事物流选址问题提供了科学的途径和手段。     

直觉模糊环境下的物流配送中心选址方法研究

物流配送中心选址决策是直接关系到物流配送系统运作效率的重要问题之一。提出了一种基于直觉模糊TOPSIS法的物流配送中心选址方法,给出了直觉模糊集的概念和运算,定义了直觉模糊集之间的距离测度;在此基础上,将直觉模糊集和TOPSIS法相结合,提出了一种配送中心选址决策的新方法,最后的算例分析说明了该方法的有效性。     

基于大数据技术的跨境电商智慧化物流配送系统建设研究

针对传统系统应用在跨境电商智慧化物流配送中存在物流配送成本较高、配送时间长的问题，提出基于大数据技术的跨境电商智慧化物流配送系统。采用模块化方式构建系统软件，利用选址模型对物流配送中心选址，利用大数据技术优化物流配送中心到客户需求点之间的路径。实验结果表明，该系统的物流配送成本相对较低，且物流配送时长也相对较短，拥有广阔的应用前景。     

基于遗传算法的电子商务物流网络模型的研究

本文建立了电子商务中物流配送中心优化设计的模糊规划模型。模型考虑了物流配送中心建设投资和流通加工的规模经济效应。为此设计了遗传算法对之进行求解。仿真实例表明了模型和算法的有效性和可行性。     

基于RFID的AGV及其在物流配送中心的应用研究

物流配送中心是现代物流链中的关键枢纽,为减少在配送中心作业中人力、物力和时间的浪费,研究并设计了基于RFID的AGV系统。该系统对RFID系统和AGV自动导引车控制系统进行了集成该系统可以通过AGV的移动和搬运来自动实现对货物信息的提取分拣、搬运、入库、到位等,这样可以代替传统的人工作业,大大提高了物流配送中心的运行效率和准确性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate