Computer Safety, Reliability and Security: 21st by Sandro Bologna, Erik Hollnagel, Christopher Bartlett, Helmut

By Sandro Bologna, Erik Hollnagel, Christopher Bartlett, Helmut Bezecny, Bjørn Axel Gran (auth.), Stuart Anderson, Massimo Felici, Sandro Bologna (eds.)

This booklet constitutes the refereed lawsuits of the twenty first foreign convention on computing device protection, Reliability and protection, SAFECOMP 2002, held in Catania, Italy in September 2002.
The 27 revised papers offered including three keynote shows have been conscientiously reviewed and chosen from sixty nine submissions. The papers are geared up in topical sections on human-computer method dependability, human components, protection, dependability evaluate, software of formal tools, reliability evaluate, layout for dependability, and protection assessment.

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In: Proc. of the Int’l Conf. : Making formal methods practical. In: Proc. of the Int’l Conf. : An automated method to detect potential mode confusions. In: Proc. , St. : Analyzing mode confusion via model checking. : SPIN’ 99. : Avoiding mode confusion in service-robots. : Integration of Assistive Technology in the Information Age, Proc. of the 7th Int’l Conf. ” – A case study of two automation surprises. In: Proc. of the 8th Int’l Symp. on Aviation Psychology. : Explaining Sarter & Woods’ classical results.

We can observe (only) the environment of the technical system. When something relevant happens, we call this an event. When the technical system is the control unit of an automated wheelchair, then an event may be that the user pushes the joystick forward, that the wheelchair starts to move, or an event may as well be that the distance between the wheelchair and a wall ahead becomes smaller than the threshold of 70 cm. The technical system has been constructed according to some requirements document REQ.

Rolland is jointly controlled by its user and by the software. Depending on the active operation mode, either the user or the automation is in charge of driving the wheelchair. 3 Precise Modelling Before we can discuss mode confusion problems, some remarks on modelling a technical system in general are necessary. The user of a running technical system has a strict black-box view. Since we want to solve the user’s problems, we must take the same black-box point of view. This statement appears to be obvious, but has far-reaching consequences for the notion of mode.

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