基于SLP的铸钢厂物流设施布置设计

采用系统化布置设计(SLP)方法通过分析铸件产品的生产流程,提供了一种以作业单位物流和非物流相关关系分析为基准的规划设计方法。同时对铸钢厂的生产车间、辅助服务部门、仓库进行设施布置设计,得出了该厂的物流设施位置相关图,并最终得到铸钢厂可行的物流设施总平面布置图。     

基于SLP的铸钢厂物流设施布置设计

采用系统化布置设计(SLP)方法通过分析铸件产品的生产流程,提供了一种以作业单位物流和非物流相关关系分析为基准的规划设计方法.同时对铸钢厂的生产车间、辅助服务部门、仓库进行设施布置设计,得出了该厂的物流设施位置相关图,并最终得到铸钢厂可行的物流设施总平面布置图.     

基于托盘管理的车间设施布局规划

基于托盘管理的手段,应用设施布置的优化数学模型,以设施间最小物料搬运费用、成本效益、时间效益、质量效益、"零库存"、"零缺陷"为目标,结合某船厂管子加工车间的平面布置方案,分析托盘管理在设施布局规划中的作用,讨论不同的设施布置对生产物流系统的影响;利用设施布置的目标函数,对优化前后的设计方案进行比较,使得车间物流顺畅、运输路线最短、缩短生产周期、降低生产费用和减少不必要的投资,来确定企业生产物流系统平面布置的最优方案。     

某环保装置生产车间的生产布局和经路改进研究

本文根据流程程序分析与布置经路分析的方法,运用"ECRS"改善原则和改进分析表等,针对某环保装置生产车间存在的生产设施布置和经路问题,分析其主要存在问题,并基于物流合理化和效益最大化的原则,提出了改善生产设施布置方案和措施.本文阐述了流程程序分析与布置经路分析方法应用于解决生产设施布置和生产物料搬运瓶颈问题的主要步骤和分析策略,这将为类似企业解决生产物流合理化问题提供有益的指导和借鉴.     

基于SLP方法的车间布局优化设计

车间设施布局是制造系统设计的一个重要问题。日趋激烈的市场竞争及不断增长的个性化需求带来了一个小批量、多品种的动态多变的生产需求,车间设施布局是否适应动态变化的生产需求,成为企业能否提高竞争力的关键因素之一。文章采用系统布置设计SLP(Systematic Layout Planning)方法的相关理论与方法对一个新车间进行了生产线布局逐年设计和改善,最终得到一个优化的方案。     

基于生产物流的SSLP在机械加工车间设施布置中的应用研究

充分考虑物流因素对生产加工过程的影响，应用SSLP对某自行车管材机加工车间进行设施布置，解决车间物流混乱、生产效率不高等问题，说明SSLP在加工装配式生产企业中小项目的应用中尤显方便、实用、有效。     

基于SLP及AHP的车间设施布置方案设计

文章针对多品种小批量生产车间内部物流效率低下这一问题,采用改进后的SLP方法,加入预测产量、运输难度及产品利润贡献率等因素,对车间进行设施布置设计得到备选方案;然后利用AHP方法,建立递阶层次模型,构造判断矩阵,采用方根法计算权重,再进行一致性检验,层次总排序,最后获得最优的布局方案。     

基于SLP的车间设施布局分析与优化

系统布置设计(SLP)方法提供了一种以作业单位物流与非物流的相互关系分析为主线的规划设计方法,采用一套表达极强的图例符号和简明表格,通过一系列条理清晰的设计程序进行工厂布置设计。本文在对CVT公司生产物流状况调研基础上,针对其厂房设施布局情况,运用系统化设施布置规划(SLP)方法对各作业单位进行物流分析、相关性分析和相互位置分析,制定方案并实现了车间设施的合理布局。     

基于OBE理念的“物流设施布置规划”虚拟仿真实验探索与实践

“物流设施布置规划”是物流系统规划的核心内容,综合利用多门课程知识,与实际联系紧密,具有很强的实践性。传统的“讲授—接受”教学模式与实验方法,无法达到理想的教学效果。基于OBE教学理念,结合精益生产、智能制造等行业前沿知识,以智能制造生产车间为背景,综合生产计划与控制、运筹学、物流设施布置等知识,开发“物流设施布置规划”虚拟仿真实验平台。学生浸入虚拟的现实场景中,通过方案设计—讨论—仿真—优化等循环过程,真正领会和掌握物流设施布置规划的知识;激发学生的学习兴趣,培养学生综合应用所学知识解决企业实际问题的能力。     

某不锈钢管生产车间设施布局优化设计

合理的设施布局能够优化资源的利用,降低设施维护成本,提高员工的安全性,对日后系统运作产生深远的影响。文章以某不锈钢有限公司的不锈钢管A生产车间为例,使用摆样法改进了该车间的设施布局,并使用SLP方法进行了方案验证。结果表明,改善方案可以有效地降低物料搬运成本,减少安全隐患,提高车间的生产效率。     

基于混合集合规划的多场景应急设施选址优化

多场景应急设施选址问题具有约束复杂、时效性强、规划周期短等特点。以混合集合规划为算法框架的自然约束语言NCL能对该问题进行建模与求解。以一个典型多场景应急设施选址问题为例,证明了NCL可有效求解该类问题。     

A model for planning locations of temporary distribution facilities for emergency response

We propose a network flow model for dynamic selection of temporary distribution facilities and allocation of resources for emergency response planning. The model analyzes the transfer of excess resources between temporary facilities operating in different time periods in order to reduce deprivation. Numerical analysis shows that the location of temporary facilities is determined by the demand and supply points. This work contributes to the emergency response planning that requires a quick response for the supply of relief materials immediately after a disaster hits a particular area.     

基于消费者环保意识的闭环物流网络优化研究

通过引入消费者的环保意识来反映其对不同回收率产品的需求函数,并考虑了回收产品质量的不确定性,建立了闭环物流网络优化模型,其目标是计划期内利润最大化,以此来确定该网络中各设施的数量、位置、设施间的物流量以及最佳回收率。最后通过一个算例验证了模型的有效性并分析了公众的环保意识对最佳回收率的影响。     

A facility location problem with clients' preference orderings

The Simple Plant Location Problem (SPLP) consists in identifying a pattern of facilities among a set of potential sites so that the sum of the costs for opening the facilities and for supplying a group of geographically dispersed clients therefrom is minimized. It is posited in this framework that the locator rules on the allocation of the clients to the facilities. When the clients are free to decide upon which facility they will attend, their choices do not necessarily match the most economical supply pattern from the point of view of the locator. We suppose here that each client has a preference ordering on the list of potential sites whereby he determines his allocation out of any set of open facilities. This preference ordering depends on characteristics of the client, of the sites, and of the trip between the client's location and the sites. Mathematically, we translate the orderings into a set of constraints to be appended to the SPLP. This new problem, termed SPLPO, has a wide range of applications as shown by a series of examples. We present an algorithm for solving the SPLPO and extensive computational experiments are reported.     

Efficient agglomeration of spatial clubs

We investigate here the agglomeration of spatial clubs in an efficient allocation of a club economy. The literature on agglomeration has focused largely on a primary agglomeration caused by direct attraction forces. We concentrate mainly on secondary and tertiary agglomerations caused by a primary agglomeration. Initially, scale economies in the provision of club goods (CGs) lead each CG to agglomerate in facilities of its club. This primary agglomeration causes a secondary concentration of population around these facilities, which in turn brings about a tertiary agglomeration of facilities of different clubs into centers in the midst of population concentration. The agglomeration of facilities occurs only if a secondary concentration of population takes place. We analyze in detail two specific patterns of agglomeration. One is the central location pattern in which the facilities of all clubs agglomerate perfectly in the middle of the complex. The second is a triple-centered complex in which the center in the middle of the complex consists of perfectly agglomerated facilities of different clubs, each with a single facility per complex. The remaining two centers also consist of facilities of different clubs, but clubs in these centers each have two facilities per complex, one in each center. Each of these two centers is located between a boundary and the middle of the complex closer to the middle of the complex than to the boundary. The facilities in these two centers form condensed clusters of facilities that may contain residential land in between the facilities. We then show that these agglomeration patterns also characterize agglomerations in general. The literature maintains that an efficiently behaving municipality increases its tax-base. This implies that it is in the municipality’s interest to achieve efficiency. The best way for a local government to achieve this desired efficiency is by partially intervening in market operations in order to internalize local externalities. Such an intervention should be limited to providing the city’s infrastructure, to taxing only residential land rents and clubs’ profits, to subsidizing the basic industry of the city, and to partially regulating land uses. Consequently, if the local governments of all complexes behave according to the above, the decentralization of the efficient allocation of the club economy would be attained.     

大学新校区建设项目社会影响的后评价主要指标的分析与构建

我国的高等教育已逐步从原先的精英教育向大众教育转变。由于大学老校区的现状很大的限制了高校的继续发展,各高校纷纷开始新建新校区。近年来全国仅已建和在建的高校新校区130余所,占地分别在几百到几千亩。大学新校区作为城市郊区的科研文化中心,对于整个城市或区域社会的教育布局、配套服务设施的规划、人力资源分配等等同样也产生着重要的影响。研究大学新校区建设项目的社会影响对完善大学新校区建设项目,发挥大学知识辐射效应有着极为重要的作用。     

集装箱港口物流系统研究综述

集装箱港口在国际贸易和国际物流方面的作用日益突出,成为现代物流发展的重要领域。近几年来,随着我国进出口贸易量的大幅增长,对集装箱港口物流系统提出了更高的配置要求。港口设施配置和港口装卸工艺是直接影响进出口贸易的物流速度和港口的经济效益。关于集装箱港口物流系统的研究方法很多,作者综合了近二十几年来国内外学者们的研究成果,在此基础上提出研究中存在的不足及解决办法,为港口决策和理论研究提供参考。     

Data center supply chain configuration design: A two-stage decision approach

Data centers are special-purpose facilities that enable customers to perform cloud based real-time online transactions and rigorous computing operations. Service levels of data center facilities are characterized by response time between query and action, which to a large extent depends on data center location and data travel distance. Another aspect of service level is resource up-time availability, which is determined by data center configuration. Data center location and configuration decisions are, therefore, of great significance to ensure uninterrupted operations in customers of manufacturing and service industries relying on cloud-based computing resources. In this study, following a grid-based location approach, we present two mixed integer linear programming models for capacitated single-source data center location-allocation problems. The first model provides optimal locations, capacities and configurations of data centers, and allocation of demands to open facilities when there is no existing facilities in the region. Our second model considers the decision problem of meeting new demand when the existing demand is met by the already opened facilities. We term these newly arrived demand as replication demand, which results either from emergence of new users of existing customers at distant locations in the future, or as a means of increasing data resilience by creating data replication as a backup. To solve the decision problem for meeting primary and replication demand optimally, we propose a two-stage decision algorithm. The algorithm provides optimal locations, capacities and configurations for new data centers, capacity addition decisions to the existing facilities and subsequent allocation of demands. Both models and solution algorithm are implemented using AMPL programming language and solved with CPLEX solver. The models are found to be scalable and capable to provide high quality solutions in reasonable time.     

论科学运用城市工程建设资金

城市工程建设主要包括城市规划、城市工程设计、城市工程施工、公共设施的使用与维护等方面,本文对城市工程建设资金在这些方面的合理分配和资金科学管理使用等做出了一些分析,以期能够科学使用建设资金,实现最大化效益。     

一类多机种飞机油料加注问题的仿真研究

总结了国内相关人员关于作战飞机地面油料加注的研究,借助GPSSW仿真语言研究了多机种飞机单队列、多服务台、服务台可休假的油料加注模型,并在给定设施利用率范围的条件下得到科学合理的服务台数量分配结果。