Encontrados 5 documentos, a visualizar página 1 de 1
Dificuldades dos falantes de línguas eslavas na aprendizagem da pronúncia do po...
Alves, Joel Alexandre DominguesA nossa dissertação, tal como o título permite adivinhar, tem como principal objetivo analisar as dificuldades dos alunos falantes de línguas eslavas, nomeadamente a língua polaca e a língua russa, na aprendizagem da pronúncia do Português Língua Estrangeira, ao longo das nossas unidades lecionadas ao longo do estágio pedagógico que decorreu no período letivo de 2012/2013. A dissertação divide-se em duas partes...
Throughput limits of two 802.15.4 wireless networks applications for signal acq...
Alves, Joel; Catarino, André P.; Carvalho, Helder; Monteiro, João L.; Rocha, A. M.This work describes the development and test of a wireless sensor network used by a biomedical signal monitoring system. Data communication is based on a body area network (BAN) materialized as a wireless network in two versions, one based on the 802.15.4 specification and another on a higher-level Zigbee protocol. The system was developed using the Jennic JN5148 microcontroller, Jennics ZBPro stack and the Jen...
Energy aware knowledge extraction from Petri nets supporting decision-making in...
Leitão, Paulo; Alves, Joel; Mendes, João M.; Colombo, Armando W.This paper introduces an approach to decision support systems in service-oriented automation control systems, which considers the knowledge extracted from the Petri nets models used to describe and execute the process behavior. Such solution optimizes the decision-making taking into account multi-criteria, namely productive parameters and also energy parameters. In fact, being manufacturing processes typically ...
Solving myopia in real-time decision-making using Petri nets models’ knowledge ...
Leitão, Paulo; Alves, Joel; Pereira, Ana I.This paper introduces a novel approach to the real-time decision-making in service-oriented manufacturing systems, addressing the myopia problem usually presented in such systems. The proposed decision method considers the knowledge extracted from the Petri nets models used to describe the services process behavior, mainly the T-invariants, combined with a multi-criteria function customized according to the sys...
Extraction of knowledge from petri nets models in service oriented based indust...
Alves, JoelIn last decades significant changes have been noticed in manufacturing environment, moving from a local economy to a global economy and generalized concurrency. Markets expectations for products with high quality at lower costs, highly customized and with short life cycles, lead us to the need to implement complete different strategies to satisfy these requirements. With the current scenario, technologies have ...
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