Abstract
The overall dependability of an interactive system is one of its weakest components, which is usually its user interface. The presented approach integrates techniques from the dependable computing field and elements of the user-centered design. Risk analysis and fault-tolerance techniques are used in combination with task analysis and modeling to describe and analyze the impact of system faults on human activities and the impact of human deviation or errors on system performance and overall mission performance. A technique for systematic analysis of human errors, effects, and criticality (HEECA) is proposed. It is inspired and adapted from the Failure Mode, Effects, and Criticality Analysis technique. The key points of the approach are: 1) the HEECA technique combining a systematic analysis of the effects of system faults and of human errors; and 2) a task modeling notation to describe and to assess the impact of system faults and human errors on operators’ activities and system performance. These key points are illustrated on an example extracted from a case study of the space domain. It demonstrates the feasibility of this approach as well as its benefits in terms of identifying opportunities for redesigning the system, redesigning the operations, and for modifying operators’ training.
Highlights
T human errors (HEs) overall dependability of an interactive system is the one of its weakest component, and there are many components in such systems ranging from the operator processing information and physically exploiting the hardware, interaction techniques, to the interactive application and possibly the underlying noninteractive system being controlled
This paper presents an integrated approach taking into account both system failures and human errors (HEs) while designing interactive systems
The presented approach integrates techniques from dependable computing and user-centered design in order to improve the reliability of interactive systems
Summary
T HE overall dependability of an interactive system is the one of its weakest component, and there are many components in such systems ranging from the operator processing information and physically exploiting the hardware (input and output devices), interaction techniques, to the interactive application and possibly the underlying noninteractive system being controlled. This paper proposes an approach integrating these aspects in order to address system and human dependability altogether. These two aspects of dependability are usually dealt with separately as the research contributions come from different and usually unrelated scientific communities. In the dependable computing community, techniques have been proposed to cope with the impact of system failures and to assess it in a
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