Reformulation and Solution Approaches for an Integrated Scheduling Model
نویسندگان
چکیده
The time continuous integrated multi-item capacitated dynamic scheduling model with non-granular lot sizes and lot start times and dynamic demand functions as its key elements has recently been developed by Jodlbauer. Here we present a reformulation for improved ease of handling as well as several methods to obtain schedules close to the optimum.
منابع مشابه
An Integrated Model for Storage Location Assignment and Storage/Retrieval Scheduling in AS/RS system
An integrated optimization framework, including location assignment under grouping class-based storage policy and schedule of dual shuttle cranes, is offered by presenting a new optimization programming model. The objective functions, which are considered at this level, are the minimization of total costs and energy consumption. Scheduling of dual shuttle cranes among specified locations, which...
متن کاملA Mathematical Model and Grouping Imperialist Competitive Algorithm for Integrated Quay Crane and Yard Truck Scheduling Problem with Non-crossing Constraint
In this research, an integrated approach is presented to simultaneously solve quay crane scheduling and yard truck scheduling problems. A mathematical model was proposed considering the main real-world assumptions such as quay crane non-crossing, precedence constraints and variable berthing times for vessels with the aim of minimizing vessels completion time. Based on the numerical results, thi...
متن کاملMulti-objective Solution Approaches for Employee Shift Scheduling Problems in Service Sectors (RESEARCH NOTE)
Today, workforce scheduling programs are being implemented in many production and service centers. These sectors can provide better quality products and/or services to their customers, taking into account employees’ desires and preferences in order to increase sector productivity. In this study, an employee shift scheduling problem in the service sector is discussed. In the problem, the aim is ...
متن کاملA New model for integrated lot sizing and scheduling in flexible job shop problem
In this paper an integrated lot-sizing and scheduling problem in a flexible job shop environment with machine-capacity-constraint is studied. The main objective is to minimize the total cost which includes the inventory costs, production costs and the costs of machine’s idle times. First, a new mixed integer programming model,with small bucket time approach,based onProportional Lot sizing and S...
متن کاملIntegrated Procurement, Production and Delivery Scheduling in a Generalized three Stage Supply Chain
In this research, we investigate a three-stage supply chain with one supplier, several manufacturers and multiple retailers where the supplier provides a common raw material to each manufacturer, who in turn uses a single stage production facility to convert it into final products that are delivered at fixed lot sizes to retailers. An integrated economic procurement, production, and delivery mo...
متن کامل