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Browsing by Author "Correia, Manuel E."

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  • An Artificial Immune System for Temporal Anomaly Detection Using Cell Activation Thresholds and Clonal Size Regulation with Homeostasis
    Publication . Antunes, Mário; Correia, Manuel E.
    This paper presents an Artificial Immune System (AIS) based on Grossman's Tunable Activation Threshold (TAT) for anomaly detection. We describe the immunological metaphor and the algorithm adopted for T-cells, emphasizing two important features: the temporal dynamic adjustment of T-cells clonal size and its associated homeostasis mechanism. We present some promising results obtained with artificially generated data sets, aiming to test the appropriateness of using TAT in dynamic changing environments, to distinguish new unseen patterns as part of what should be detected as normal or as anomalous.
    2009-08Conference paper Restricted access Show more
  • Profiling IT Security and Interoperability in Brazilian Health Organisations From a Business Perspective
    Publication . Rijo, Rui; Martinho, Ricardo; Oliveira, Adicinéia Aparecida; Alves, Domingos; Reis, Zilma Silveira Nogueira; Santos-Pereira, Cátia; Correia, Manuel E.; Antunes, Luís Filipe; Cruz-Correia, Ricardo João
    The proliferation of electronic health (e-Health) initiatives in Brazil over the last 2 decades has resulted in a considerable fragmentation within health information technology (IT), with a strong political interference. The problem regarding this issue became twofold: 1) there are considerable flaws regarding interoperability and security involving patient data; and 2) it is difficult even for an experienced company to enter the Brazilian health IT market. In this article, the authors aim to assess the current state of IT interoperability and security in hospitals in Brazil and evaluate the best business strategy for an IT company to enter this difficult but very promising health IT market. A face-to-face questionnaire was conducted among 11 hospital units to assess their current status regarding IT interoperability and security aspects. Global Brazilian socio-economic data was also collected, and helped to not only identify areas of investment regarding health IT security and interoperability, but also to derive a business strategy, composed out of recommendations listed in the paper.
    2020-04-01Journal article Open access Show more