This chapter presents a middle-term new load adjustment approach by overlapping for a set of jobs in a job-shop context, guaranteeing the existence of a limited capacity schedule without scheduling under the assumption of pre-emptive tasks. The proposed approach is based on the exploitation of the tasks scheduling time segments overlapping and on the distribution of the job’s margins between ta...

Despite the inter-dependent relationship between them, production scheduling and preventive maintenance planning decisions are generally analyzed and executed independently in real manufacturing systems. This practice is also found in the majority of the studies found in the relevant literature. In this paper, heuristics based on genetic algorithms are developed to solve an integrated optimizat...

As the increasing use of RFID technology in manufacturing companies, the real-time production data collection is inadequate. Companies especially small and medium-sized manufacturing entities, contemplate to implement advanced planning and scheduling (APS) so as to achieve real-time production. This paper, motivated by a reallife case, proposes a real-time planning and scheduling model to reali...

In a real planning problem, there exists a set of constraints (both temporal constraints and resource usage constraints) which must be satisfied in order to obtain a feasible plan. This requires a scheduling process (after the planning process) which should guarantee the availability of resources and the satisfiability of all the problem constraints. Several approaches have been proposed to dea...

Mathematical optimization has become an important supply chain management tool for any contemporary enterprise. Increasing profit margins through better design, planning, and operative decisions across the supply chain represents a huge opportunity in the more than ever competitive economic market, especially in a global scale. Industrial and academic researchers have been working intensively i...

As companies increasingly customize their products, move towards smaller lot production and experiment with more flexible customer/supplier arrangements, they increasingly require the ability to respond quickly, accurately and competitively to customer requests for bids on new products and efficiently work out supplier/subcontractor arrangements for these new products. This in turn requires the...

One of the key elements in production planning hierarchy is master production scheduling. The aim of this study is to evaluate and compare thirteen alternative MPS development methods, including multi-objective optimization as well as twelve heuristics, in different operating conditions for multi-product single-level capacity-constrained production systems. We extract six critical criteria from...

Nowadays, flexible manufacturing system (FMS) is introduced as a response to the competitive environment. Scheduling of FMS is more complex and more difficult than the other scheduling production systems. One of the main factors in scheduling of FMS is variable time of taking orders from customers, which leads to a sudden change in the manufacturing process. Also, some problems are created in p...

Purpose - This study presents an extension to a model in the literature for lot-sizing and scheduling small foundry with multiple alternate furnaces. The purpose of is minimize delays inventory costs. In addition, it determines best use load capacity Theoretical framework – Lot-sizing foundries marketplace subject academic interest due its applicability mathematical computational complexity. Ma...

Planning and control systems for highly dynamic and uncertain manufacturing environments require adaptive flexibility and decision-making capabilities. Modern distributed manufacturing systems assess the utility of planning and executing solutions for both system goals (e.g. minimize manufacturing production time for all parts or minimize WIP), and local goals (e.g. expedite part A production s...