Browsing by Author "Santos, Joaquim"
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- Cooperation mechanism for team-work based multi-agent system in dynamic scheduling through meta-heuristicsPublication . Madureira, Ana Maria; Gomes, Nuno; Santos, Joaquim; Ramos, CarlosThis paper describes a Multi-agent Scheduling System that assumes the existence of several Machines Agents (which are decision-making entities) distributed inside the Manufacturing System that interact and cooperate with other agents in order to obtain optimal or near-optimal global performances. Agents have to manage their internal behaviors and their relationships with other agents via cooperative negotiation in accordance with business policies defined by the user manager. Some Multi Agent Systems (MAS) organizational aspects are considered. An original Cooperation Mechanism for a Team-work based Architecture is proposed to address dynamic scheduling using Meta-Heuristics.
- Cooperative intelligent system for manufacturing schedulingPublication . Madureira, Ana Maria; Santos, Joaquim; Pereira, IvoHybridization of intelligent systems is a promising research field of computational intelligence focusing on combinations of multiple approaches to develop the next generation of intelligent systems. In this paper we will model a Manufacturing System by means of Multi-Agent Systems and Meta-Heuristics technologies, where each agent may represent a processing entity (machine). The objective of the system is to deal with the complex problem of Dynamic Scheduling in Manufacturing Systems.
- A hybrid intelligent system for distributed dynamic schedulingPublication . Madureira, Ana Maria; Santos, Joaquim; Pereira, IvoThis chapter addresses the resolution of dynamic scheduling by means of meta-heuristic and multi-agent systems. Scheduling is an important aspect of automation in manufacturing systems. Several contributions have been proposed, but the problem is far from being solved satisfactorily, especially if scheduling concerns real world applications. The proposed multi-agent scheduling system assumes the existence of several resource agents (which are decision-making entities based on meta-heuristics) distributed inside the manufacturing system that interact with other agents in order to obtain optimal or near-optimal global performances.
- MASDScheGATS: a prototype system for dynamic schedulingPublication . Madureira, Ana Maria; Santos, Joaquim; Pereira, IvoA manufacturing system has a natural dynamic nature observed through several kinds of random occurrences and perturbations on working conditions and requirements over time. For this kind of environment it is important the ability to efficient and effectively adapt, on a continuous basis, existing schedules according to the referred disturbances, keeping performance levels. The application of Meta-Heuristics and Multi-Agent Systems to the resolution of this class of real world scheduling problems seems really promising. This paper presents a prototype for MASDScheGATS (Multi-Agent System for Distributed Manufacturing Scheduling with Genetic Algorithms and Tabu Search).
- MASDSheGATS – Scheduling System for Dynamic Manufacturing EnvironmentsPublication . Madureira, Ana Maria; Santos, Joaquim; Pereira, IvoThis chapter addresses the resolution of scheduling in manufacturing systems subject to perturbations. The planning of Manufacturing Systems involves frequently the resolution of a huge amount and variety of combinatorial optimisation problems with an important impact on the performance of manufacturing organisations. Examples of those problems are the sequencing and scheduling problems in manufacturing management, routing and transportation, layout design and timetabling problems.
- Self-management web application for persons with schizophreniaPublication . Domingues, José; Gomes, Paulo Veloso; Almeida, Raquel Simões de; Martins, Constantino; Fonseca, Nuno; Santos, Joaquim; Marques, António; Pereira, JavierThis paper describes a web-based application with the purpose of improving the selfmanagement of people with schizophrenia. The main objective with the creation of a web application for mental health management was to provide easy and convenient access to resources, information, and tools that can help individuals manage their mental health issues more effectively and with greater autonomy. The application integrates different functionalities, such as stress management system, problem solving tools, medication control, symptoms monitoring and social interaction. In addition to self-management, the application facilitates interaction between the person with schizophrenia and the health professional through telemonitoring systems, reducing risks and increasing the patient’s quality of life.
- Self-managing agents for dynamic scheduling in manufacturingPublication . Madureira, Ana Maria; Santos, Joaquim; Pereira, IvoThe main purpose of this paper is to propose a Multi-Agent Autonomic and Bio-Inspired based framework with selfmanaging capabilities to solve complex scheduling problems using cooperative negotiation. Scheduling resolution requires the intervention of highly skilled human problem-solvers. This is a very hard and challenging domain because current systems are becoming more and more complex, distributed, interconnected and subject to rapidly changing. A natural Autonomic Computing (AC) evolution in relation to Current Computing is to provide systems with Self-Managing ability with a minimum human interference.