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This work addresses the scheduling of continuous single stage multiproduct plants with parallel units and shared storage tanks. Three alternative process models for the energy-intensive melt shop of a steel plant are proposed and linked to a discrete-time formulation. Processing tasks are energy intensive and we consider time- dependent electricity pricing and availability together with multiple intermediate due dates, handled as hard constraints.

Research topics of this kind vary from forest management to analysis and simulations of reaction-diffusion models, the dynamics of fish populations, dengue epidemiology, health care data, sensor location analysis, mass rescue operations, fishing surveys sampling operations, bus driving rerostering, parking enforcement agents routing, and optimal scheduling of petroleum refineries.

Efficient MILP-based solution strategies for large-scale industrial batch scheduling problems more. Remember me on this computer. The results show significant improvements in solution quality coupled with a reduced computational effort compared to other existing methodologies.

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lnvestigacao HarjunkoskiJohn HookerS. 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. Mechanical Engineering and Chemical Engineering.

Processing tasks are energy intensive and we consider time- dependent electricity pricing and availability A typical flowshop process consists of successive manufacturing stages arranged in a single production line where different Add Social Profiles Facebook, Twitter, etc. After the introduction and problem classification, the paper discusses some invesyigacao 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.

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Pedro Castro | Universidade de Lisboa –

International Journal of Production Research. The center develops research in the area of Mathematical Sciences, covering domains that range from foundations to applications.

However there is still clear potential for improvements, especially in transferring academic results into industry. Log In Sign Up.

Its main objectives are to pursue deep o;eracional in areas of mathematics, to train young inbestigacao at several stages of their career, and to foster and develop applications to relevant problems in the Sciences and from Industry.

It is claimed that optimization tools of today can effectively support the plant level production. A new discrete-time aggregate formulation is proposed to rapidly plan the production levels. Enter the email address you signed up with and we’ll email you a reset link. Wassickand C. 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.

Along with dissemination of scientific results, the unit promotes the communication of mathematics in schools and for the wider public. Optimal scheduling of continuous plants with energy constraints more.

In this paper, the resource—task network is used to provide a generic modeling framework for production scheduling under energy constraints.

Above all, the aim of the paper is to focus on the industrial aspects of scheduling and discuss the main characteristics, including The results show a trade-off between accurate representation of problem data and computational performance. Their contributions in Stochastic Optimisation is also noteworthy, as well as in areas such as Multicriteria Optimisation and Generalized Disjunctive Programming.

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Optimization and Continuous Time Signals.

Computer Aided Chemical Engineering. We group the significant contributions of the unit into three areas of research: Greedy algorithm for scheduling batch plants with sequence-dependent changeovers more. In this paper, the resource—task network is used Help Center Find new research papers in: This Unit is formed by: It is combined with a. For instance, usability, interfacing and integration are some aspects discussed in the paper.

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. 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. The increased visibility of this field in the unit is a consequence of the merge of two former units.

Scope for industrial applications of production scheduling models and solution methods more. Skip to main content. A hybrid scheduling approach for automated flowshops with material handling and time oepracional more. The international visibility of CMAFcIO can be seen in several other aspects that result from the active research of its members: Click invsstigacao to sign up.