Advances in information technology provide opportunities for the development of computer systems that support risk managers in complex tasks. In this book, leading experts report on the potentials and limitations concerning the use of computer systems in risk management. Their reports are based on many years of experience in their fields which include: risk analysis; systems engineering; geographic information systems; decision-support systems; human-machine systems; and psychology. The book addresses four major issues in computer-supported risk management: conceptual aspects - the role, design, and use of computers in risk management; planning and policy analysis - transportation, equity analysis, emergency management, group decision-making; operational decision making - nuclear power monitoring, emergency response, public safety warning, satellite tracking; and commercial applications - GIS from IIASA, InterClair from IAEA, EPA software and clean-up decision-support software survey. This book is intended for researchers who should find the emerging issues in risk management that are motivated by the encounter of new tasks and novel technology; practitioners who find here descriptions and references of the state-of-the-art models and software; and students who can here learn the basic concepts needed to develop advanced information and decision support systems in risk management.