Trevisanuto D., Putoto G., Pizzol D., Serena T., Manenti F., Varano S., Urso E., Massavon W., Tsegaye A., Wingi O., Onapa E., Segafredo G., Cavallin F. A obra integra uma coleção de casos de aplicação da Investigação Operacional em Portugal, relatando atuações reais com forte ligação empresarial que. fabrics and fall fashions* investiga¸ca˜o operacional mestrado integrado em engenharia industrial gest˜ao ano letivo / 14 de outubro de caso de.
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A hybrid scheduling approach for automated flowshops with material handling and time constraints more. A typical flowshop process consists of successive manufacturing stages arranged in a single production line where different A typical flowshop process consists of successive manufacturing stages arranged in a single production line where different jobs have to be processed following a predefined production recipe.
In this work, the scheduling of a complex flowshop process involving automated wet-etch station from semiconductor manufacturing systems requires a proper synchronisation of processing and transport operations, due to stringent storage policies and fixed transfer times between stages. Robust hybrid solution strategies based on mixed integer linear programming formulations and heuristic-based approaches, such as aggregation and decomposition methods, are proposed and illustrated on industrial-scale problems.
The results show significant improvements in solution quality coupled with a reduced computational effort compared to other existing methodologies. International Journal of Production Research.
In this paper, the operacionall network is used In this paper, the resource—task network is used to provide a generic modeling framework for production scheduling under energy constraints. Three alternative process models for the energy-intensive melt shop of a steel plant are proposed and linked to a discrete-time formulation. The results show a trade-off between accurate representation of problem data and computational performance.
Optimization and Continuous Time Signals. Greedy algorithm for scheduling investigzcao plants with sequence-dependent changeovers more.
Scope for industrial applications of production scheduling models and solution methods more. HarjunkoskiJohn HookerS. Wassickand C. Above all, the aim of the paper is to focus on the industrial aspects of scheduling and discuss the main characteristics, including Above all, the aim of the paper is to focus on the industrial aspects of scheduling and discuss the main characteristics, including strengths and weaknesses of the presented approaches.
It is claimed that optimization tools of today can effectively support the plant level production. However there is still clear potential for improvements, especially in transferring academic results into industry. For instance, usability, interfacing and integration are some aspects discussed in the paper.
After the introduction and problem classification, the paper discusses some lessons learned from industry, provides an overview of models and methods and concludes with general guidelines and examples on the modeling and solution of industrial problems.
Mechanical Engineering and Chemical Engineering. Opperacional scheduling of continuous plants with energy constraints more. This work addresses the scheduling of continuous single stage multiproduct plants with parallel units and shared storage tanks. Processing tasks are energy intensive and we consider time- dependent electricity pricing and availability Processing tasks are energy intensive and we consider time- dependent electricity pricing and availability together with multiple operacoinal due dates, handled as hard constraints.
Journals for Free – Journal detail: Investigação Operacional
A new discrete-time aggregate formulation is proposed to rapidly plan the production levels. It is combined with a.
Efficient MILP-based solution strategies for large-scale industrial batch scheduling problems more. Computer Aided Chemical Engineering.
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