University of Minnesota
Software Engineering Center
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Anjali Joshi

Recent Publications

Behavioral Fault Modeling for Model-based Safety Analysis

Recent work in the area of Model-based Safety Analysis has demonstrated key advantages of this methodology over traditional approaches, for example, the capability of automatic generation of safety artifacts. Since safety analysis requires knowledge of the component faults and failure modes, one also needs to formalize and incorporate the system fault behavior into the nominal system model. Fault behaviors typically tend to be quite varied and complex, and incorporating them directly into the nominal system model can clutter it severely.

Automatic Generation of Static Fault Trees from AADL Models

Safety-critical systems, such as avionics systems and medical devices, are developed with stringent safety requirements. System safety analysis provides assurance that the system in consideration satisfies these safety constraints. Traditionally, safety analysis is performed manually based on various informal requirements and design documents. Recent work in the area of model-based safety analysis,where safety analysis is based on a central formal model of the system, has helped demonstrate some key advantages of this methodology, including automatic generation

A Proposal for Model-Based Safety Analysis

System safety analysis techniques are well es-tablished and are used extensively during the design of safety-critical systems. Despite this, most of the techniques are highly subjective and dependent on the skill of the practitioner. Since these analyses are usually based on an informal system model, it is unlikely that they will be complete, consistent, and error free.

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