Aamir Mahmood, Konstantinos Koufos, & Krisztina Cziner. (2008). Multicast voice performance within a public safety cell. In B. V. de W. F. Fiedrich (Ed.), Proceedings of ISCRAM 2008 – 5th International Conference on Information Systems for Crisis Response and Management (pp. 18–24). Washington, DC: Information Systems for Crisis Response and Management, ISCRAM. Abstract: In public safety communications the first responders are getting directions about the tactical action plan with multicast voice whereas they can report back to the dispatcher with unicast voice. In this paper, the aim is to find the maximum number of voice calls for situation reporting in the presence of multicast voice for tactical coordination. In order to increase the reliability of our analysis we verify our simulator against a test bed prototype consisting of three 802.11 terminals. The simulation study is applied within a mobile cell. The proposed mobility model applies for initial deployment in emergency scenarios. We investigate the statistical properties of the model by simulations. Keywords: Computer simulation; Equipment testing; Information systems; Reliability analysis; Voice/data communication systems; Distributed Coordination Function; Emergency scenario; Initial deployments; Mobility model; Public safety communications; Simulation studies; Statistical properties; Voice over Internet protocol; Multicasting Track: Communication Systems and Technologies for Crisis and Disaster Response Share to FB \| Save citation: RTF PDF LaTeX \| Export record: Atom XML MODS XML OAI_DC XML ODF XML SRW_DC XML SRW_MODS XML
Kim Weyns, & Martin Höst. (2012). Risk analysis for critical systems with reliability block diagrams. In Z.Franco J. R. L. Rothkrantz (Ed.), ISCRAM 2012 Conference Proceedings – 9th International Conference on Information Systems for Crisis Response and Management. Vancouver, BC: Simon Fraser University. Abstract: Governmental organisations are becoming more critically dependant on IT systems such as communication systems or patient data systems, both for their everyday tasks and their role in crisis relief activities. Therefore it is important for the organisation to analyse the reliability of these systems as part of the organisation's risk and vulnerability analysis process. This paper presents a practical risk analysis method for critical, large-scale IT systems in an organisation. The method is based on reliability block diagram modelling and was adapted to fit the requirements of governmental organisations and to reduce the effort required to capture complex failure behaviour. The paper first explicitly lists the requirements that such a risk analysis method must fulfil, then presents the proposed risk analysis method and finally outlines the planned evaluation of this method. Â© 2012 ISCRAM. Keywords: Availability; Hospital data processing; Information systems; Reliability analysis; Risk assessment; Complex failure; Critical systems; Government; Patient data; Reliability block diagrams; Relief activities; Risk analysis methods; Vulnerability analysis; Risk analysis Track: Planning and Foresight Share to FB \| Save citation: RTF PDF LaTeX \| Export record: Atom XML MODS XML OAI_DC XML ODF XML SRW_DC XML SRW_MODS XML

Abstract: In public safety communications the first responders are getting directions about the tactical action plan with multicast voice whereas they can report back to the dispatcher with unicast voice. In this paper, the aim is to find the maximum number of voice calls for situation reporting in the presence of multicast voice for tactical coordination. In order to increase the reliability of our analysis we verify our simulator against a test bed prototype consisting of three 802.11 terminals. The simulation study is applied within a mobile cell. The proposed mobility model applies for initial deployment in emergency scenarios. We investigate the statistical properties of the model by simulations.

Abstract: Governmental organisations are becoming more critically dependant on IT systems such as communication systems or patient data systems, both for their everyday tasks and their role in crisis relief activities. Therefore it is important for the organisation to analyse the reliability of these systems as part of the organisation's risk and vulnerability analysis process. This paper presents a practical risk analysis method for critical, large-scale IT systems in an organisation. The method is based on reliability block diagram modelling and was adapted to fit the requirements of governmental organisations and to reduce the effort required to capture complex failure behaviour. The paper first explicitly lists the requirements that such a risk analysis method must fulfil, then presents the proposed risk analysis method and finally outlines the planned evaluation of this method. Â© 2012 ISCRAM.

Keywords: Availability; Hospital data processing; Information systems; Reliability analysis; Risk assessment; Complex failure; Critical systems; Government; Patient data; Reliability block diagrams; Relief activities; Risk analysis methods; Vulnerability analysis; Risk analysis

Track: Planning and Foresight

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