运力约束下多应急物资供应点选择模型研究

考虑供应点运力约束,研究了多应急物资供应点组合选择问题。构建了运力约束下以供应时间最短和供应成本最小为目标的多目标供应点选择模型,提出了将运力约束转化的求解思路,进而利用理想点法求解最优选择策略,最后利用算例验证了解法的可行性。

离散随机需求下共用装配线生产计划优化

依据工程机械产品的离散随机需求和生产线能力受限的特点,充分考虑生产不同产品的切换费用、生产启动费用、产品持有费用、需求拖欠费用等,研究单条装配线上的多产品生产计划优化问题。通过构建生产计划的优化模型导出求解模型的递推公式,设计了求解模型的动态规划算法以及启发式算法,最后进行了算例分析。该优化方法可用于工程机械装备等生产企业制定单条装配线上的多产品生产计划。

Production Decision Based on Discounted Price and Delivery Frequency for Garment Original Equipment Manufacturer with Constrained Capacity

Original equipment manufacturers(OEM) have never been so important and powerful as it is today in garment manufacturing industry.The OEMsupplier's production decisions always have a great impact on the market performance and the profits of a garment brand manufacturer.With constrained capacity and multiply buyers,howto make reasonable production decisions is an urgent problem for OEMsuppliers.A price discount model with a single OEMsupplier and two buyers is proposed to deal with the problem.Based on this model,the OEMsupplier could satisfy buyers' demands and guarantee their profits as well through adjusting price and delivery frequency.A numerical example validates the validity of the model.

基于时间和装载能力约束的配装作业计划

在分析物流配送中心作业流程和特点的基础上,以配送装载系统总时间最少为目标,以货车初始到达时间范围、装载流程最大装车数和流程作业时间要求等为约束条件,建立基于时间和装载能力约束的配送装车作业计划模型。采用在初始装车作业计划的基础上,运用交换货车作业顺序、定序优化方法等关键技术设计相应算法对模型进行求解。算例和分析表明,优化方法对于合理安排配送中心货物装载顺序、减少装载的排队等待时间、提高货物装载效率和加快配送中心的运作都具有显著作用。