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Product Description
We are building systems today-and using computers to control them-that have the potential for large-scale destruction of life and environment. More than ever, software engineers and system developers, as well as their managers, must understand the issues and develop the skills needed to anticipate and prevent accidents. Nancy Leveson examines what is currently known about building safe electromechanical systems and looks at past accidents to see what practical lessons can be applied to new computer-controlled systems.
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We are building systems today--and using computers to control them--that have the potential for large-scale destruction of life and environment. More than ever, software engineers and system developers, as well as their managers, must understand the issues and develop the skills needed to anticipate and prevent accidents before they occur. Professionals should not require a catastrophe to happen before taking action.
Addressing this need in her long-awaited book, Nancy Levenson examines what is currently known about building safe electromagnetic systems and looks at past accidents to see what practical lessons can be applied to new computer-controlled systems.
Software- Demonstrates the importance of integrating software safety efforts with system safety engineering
- Describes models of accidents and human error that underlie particular approaches to safety problems
- Presents the elements of a software program, including management, hazard analysis, requirements analysis, design for safety, design of the human-machine interface, and verification
0201119722B04062001
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That said, I really would have liked the book going into more concrete detail about how to write programs that will behave well in conjunction with potentially dangerous physical equipment. The one example of dissected software, the user interface for the Therac-25 radiotherapy machine, is for various reasons studied only second-hand, as it were, but already there hints at a number of issues with thread synchronisation, sensor data input and so on, that show that there really are coding practices that have to be learned in order to achieve that system safety. A list of books for further reading and learning would have been great. Even more great would have been something in the way of exercises and pointers to courses. (Of course, one cannot learn the craft merely by reading, but will have to practise for real to discover the pitfalls and important things to consider.)
The book is a good "bed time reading" that gives an overview of the field, major problems and introduction to some major approaches. It is however not a handbook per se - you will not understand any particular method sufficiently to apply it.
Overall, very good introductory text with a good coverage and a very easy and clear language!
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