Encontrados 14 documentos, a visualizar página 1 de 2

Investigação das descargas de águas subterrâneas em meio marinho : uma abordage...

Paraísos cruzados: itinerários simétricos em Carabane, uma ilha turística no Su...

Dissertação apresentada para cumprimento dos requisitos necessários à obtenção do grau de Mestre em Antropologia: Culturas Visuais ; Em Carabane, ilha turística da região da Casamansa, no Sul do Senegal, cruzam-se as rotas de turistas, emigrados e expatriados ocidentais locais e ainda as perspectivas de migração para o Ocidente de uma parte da população local. O resultado dessa confluência neste cenário é o po...

Process Optimization of Service-Oriented Automation Devices Based on Petri Nets

This paper introduces a novel method for the specification and selection of criteria-weighted operation modes for the orchestration of services in industrial automation using Petri nets. The objective is to provide to the internal decision support system of a service-oriented automation device or of another applicable computational system the capability to select the best path in a Petri net orchestration model...

Composition of Petri Nets Models in Service-oriented Industrial Automation

In service-oriented systems, composition of services is required to build new, distributed and more complex services, based on the logic behavior of individual ones. This paper discusses the formal composition of Petri nets models used for the process description and control in service-oriented automation systems. The proposed approach considers two forms for the composition of services, notably the offline com...

Software methodologies for the engineering of service-oriented industrial autom...

Implementation of a holonic control system in a flexible manufacturing system

Answering to the need to have innovative manufacturing control systems tailored to the current economical, technological, and customer trends, where dynamic and volatile environments prevail, adaptive holonic control architecture (ADACOR) aims to increase the agility and reconfigurability of the production system, contributing for the improvement of the enterprise competitiveness when it works in dynamic and vo...

A holonic approach to dynamic manufacturing scheduling

Manufacturing scheduling is a complex combinatorial problem, particularly in distributed and dynamic environments. This paper presents a holonic approach to manufacturing scheduling, where the scheduling functions are distributed by several entities, combining their calculation power and local optimization capability. In this scheduling and control approach, the objective is to achieve fast and dynamic re-sched...

Towards Ubiquitous Production Systems and Enterprises

In the evolvable manufacturing world we are moving towards systems made of small intelligent interacting units which make their own decisions independently from a centralized decision maker. System intelligence will be the collective intelligence resulting from a large number of individual decision, each one based on its local knowledge. In our paper we present the Ubiquitous Production Systems and Enterprises ...

ADACOR : a holonic architecture for agile and adaptive manufacturing control

In the last decades significant changes in the manufacturing environment have been noticed: moving from a local economy towards a global economy, with markets asking for products with higher quality at lower costs, highly customised and with short life cycle. In these circumstances, the challenge is to develop manufacturing control systems with intelligence capabilities, fast adaptation to the environment chang...

A Collaborative Automation Approach to Distributed Production Systems

The new enterprise organizations, such as virtual enterprise and smart enterprise, require the usage of collaborative automation approaches, addressing the flexibility and dynamic re-configurability. Collaborative automation is a result of the integration of emerging technologies and paradigms like smart agent-based control technology, mechatronics, communication and information. This paper reviews the paradigm...