Racim Fahssi

Learn More
Task analysis can be considered as a fundamental component of user centered design methods as it provides a unique way of analyzing in a systematic way users' roles and activities. A widely used way of storing the information gathered during that phase in a structured and exhaustive way is to build task models which are then amenable to verification of(More)
The work presented in this paper is based on a synergistic approach [1] integrating models of operators' tasks (described using the HAMSTERS notation) with models of the interactive system (described using the ICO notation) they are using. This synergistic approach makes it possible to bring together two usually independent (but complementary)(More)
Assuring that operators will be able to perform their activities even thought the interactive system exhibits failures is one of the main issues to address when designing and implementing interactive systems in safety critical contexts. The zero-defect approaches (usually based on formal approaches such as [5]) try to guarantee that the interactive system(More)
The overall dependability of an interactive system is the one of its weakest component which is usually its user interface. The presented approach integrates techniques from the dependable computing field and elements of user-centred design to provide a wider coverage of possible faults. Risk analysis and fault tolerance techniques are used in combination(More)
User interfaces for the command and control of transportation and navigation systems, such as aircraft cockpits, usually integrate several types of interaction elements: physical, hardware or software. Within these cyberphysical environments, operators have to complete their tasks manipulating these different types of elements. However, task description(More)
  • 1