Offshore jacket platforms (OJPs) may be exposed to harsh environmental conditions during their operation in different return periods. It is necessary evaluate the dynamic performance of OJPs subjected extreme wave loadings secure a safe operation. In earlier studies, various approaches were introduced analyze response an OJP sea states. However, serious shortcoming proposed methods computationa...

The recent financial crisis, the growth of the frequency of extreme risk events are motivations for a new analysis of the mechanisms and processes that implies high risk and high uncertainty. The new dynamics and the severe impact of the extreme events (natural hazards, terrorism, technological accidents, and economic/financial crises), but also the complexity of interventions have motivated th...

Usage of activity theory has emerged in other applications in computer science, including human computer interfaces. This paper applies activity theory as a theoretical framework for the analysis of DSS for extreme events. An example, based on computer support on the web for hurricane response, is used to illustrate how activity theory might be applied to extreme events in a decision support sy...