4 research outputs found
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A multi-agent system for pervasive healthcare
Wireless technology based pervasive healthcare has been proposed in many applications such as disease management and accident prevention for cost saving and promoting citizen’s wellbeing. However, the emphasis so far is on the artefacts with limited attentions to guiding the development of an effective and efficient solution for pervasive healthcare. Therefore, this paper aims to propose a framework of multi-agent systems design for pervasive healthcare by adopting the concept of pervasive informatics and using the methods of organisational semiotics. The proposed multi-agent system for pervasive healthcare utilises sensory information to support healthcare professionals for providing appropriate care. The key contributions contain theoretical aspect and practical aspect. In theory, this paper articulates the information interactions between the pervasive healthcare environment and stakeholders by using the methods of organisational semiotics; in practice, the proposed framework improves the healthcare quality by providing appropriate medical attentions when and as needed. In this paper, both systems and functional architecture of the multi-agent system are elaborated with the use of wireless technologies such as RFID and wireless sensor networks. The future study will focus on the implementation of the proposed framework
A Declarative Goal-oriented Framework for Smart Environments with LPaaS
Smart environments powered by the Internet of Things aim at improving our
daily lives by automatically tuning ambient parameters (e.g. temperature,
interior light) and by achieving energy savings through self-managing
cyber-physical systems. Commercial solutions, however, only permit setting
simple target goals on those parameters and do not consider mediating
conflicting goals among different users and/or system administrators, and
feature limited compatibility across different IoT verticals. In this article,
we propose a declarative framework to represent smart environments, user-set
goals and customisable mediation policies to reconcile contrasting goals
encompassing multiple IoT systems. An open-source Prolog prototype of the
framework is showcased over two lifelike motivating examples
Architectures for integration of information systems under conditions of dynamic reconfiguration of virtual enterprises
Tese Doutoramento Programa Doutoral em Industrial and Systems EngineeringThe aim of this thesis is to explore Architectures of information systems Integration under
conditions of dynamic reconfiguration of Virtual Enterprises. The main challenge that we identify
and which formed the basis of the research is that information technologies alone cannot support
efficiently and effectively the human knowledge and their natural way of interacting.
Already from Sausurre (1916) it could be argued that part of knowledge resides in person, and
the attempt to try to model it is sufficient for it to be misrepresented. And this is the motto of all
this work. Enhance the capabilities of emerging technologies, but in the sense that allow humanto-
human interaction, having the information system merely a means to make this possible.
Thus we argue that a communicational architecture of information systems integration (where
Pragmatics mechanisms are enabled) in virtual enterprises in dynamic reconfiguration scenarios,
are better able than the existing transactional architectures.
We propose a communicational architecture able to achieve an effective integration of
information systems, as well as designing its logical and functional model. We also define the
necessary semiotic framework in order to a communicational integration architecture could be
efficient and effective.
We implemented two prototypes to demonstrate the applicability of the proposed architecture.
The demonstration of the research hypothesis was demonstrated with the realization of two
experimentations where the ontologies have been unable to resolve disagreements or absences
of opinion inherent in people who collaborated. This was overcome with the implementation of
mechanisms that allow the co-creation between members of the group that participated in the
trial.O objectivo desta tese é explorar Arquitecturas de Integração de Sistemas de Informação em
condições de Reconfiguração Dinâmica de Empresas Virtuais. O principal desafio que
identificamos e que serviu de base da pesquisa é que as tecnologias de informação por si só não
conseguem suportar de forma eficiente e efectiva o conhecimento humano e a sua forma natural
de interagir.
Já Sausurre (1916) defendia que parte do conhecimento residirá sempre na pessoa, e a
tentativa de o tentar modelar é suficiente para que seja deturpado. E esse é o mote de todo este
trabalho. Enaltecer as capacidades das tecnologias emergentes mas no sentido de elas
permitirem a interacção homem-to-homem, sendo o sistema de informação meramente um meio
para que tal seja possível.
Argumentamos por isso que uma arquitectura comunicacional de integração de sistemas de
informação, onde Pragmatics mechanisms are enabled, em empresas virtuais em cenários de
reconfiguração dinâmica, são mais capazes que as actuais arquitecturas transacionais.
Propomos para isso uma arquitectura comunicacional capaz de conseguir uma integração
efectiva de sistemas de informação, assim como desenhamos o seu modelo lógico e funcional.
Definimos ainda o quadro semiótico necessário para que uma arquitectura comunicacional de
integração seja eficiente e effectiva.
Implementamos dois protótipos capazes de demonstrar a aplicabilidade da arquitectura
proposta. A demonstração da hipótese de pesquisa ficou demonstrada com a realização de uma
experimentação onde as ontologias se mostraram incapazes de resolver discordâncias ou
ausências de opinião inerentes às pessoas que colaboram. Tal foi superado com a aplicação de
mecanismos que permitiram a co-criação entre os membros do grupo que realizou a
experimentação