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The paper is devoted to a comprehensive modelling of the influence of the operation process and the climate-weather change process on the safety of a critical infrastructure. Particular models of critical infrastructure safety influenced by its inside among its components and subsystems dependences and by its outside operating environment threats and climate-weather hazards are created and a reasonable...
The paper is devoted to the climate influence on the safety of a critical infrastructure defined as a complex system in its operating environment that in the case of its degradation have significant destructive influence on the health, safety and security, economics and social conditions of large human communities and territory areas. The method based on the joint model linking a multistate approach...
The paper is devoted to the critical infrastructure safety impacted by climate-weather change. A simplified safety model of the critical infrastructure influenced by the climate-weather change process at its operating area is proposed. This model is linking critical infrastructure multistate safety model and the model of the climate-weather change process at its operating area. The conditional safety...
Safety is becoming more and more important with the ever increasing level of safety related E/E Systems built into the cars. Increasing functionality of vehicle systems through electrification of power train and autonomous driving leads to complexity in designing system, software and safety architecture. ISO 26262 aims to reduce the complexity and to approve the traceability of the different safety...
Clinical Information Technology (CIT) literature expresses a wide variety of hazards and unintended consequences which these technologies manifest. Literature review, field study, sample survey and experimental simulation have all been applied in an effort to understand the nature of these hazards, however, systematic hazard analysis techniques of systems which implement these technologies have been...
With tight timing, sequencing and compact, the time error of any task flow activities of carrier aircrafts may result flow fracturing, leading to unsafe task. Currently, the research in the carrier aircraft safety is mainly focused on the quality of its flight dynamics modeling and simulation, while for carrier aircraft task flow analysis, its improvement, and safety induced by the time factor, there...
In this paper, we describe a safety analysis method that utilizes two models, namely, Petri nets to model the behavioral aspects of a system, and fault tree analysis to model failure and hence unacceptable behaviors of a system. Using petri nets and fault tree analysis, we should be able to perform both forward and backward reachability analyses that are related to acceptable and unacceptable behaviors...
Hazards are situations that can result in accidents. Depending on the domain, this can include loss of lives, injuries and economic or environmental disasters. For example, a common hazard in the aviation domain is in flight engine shutdown. Hazard analysis is the process of discovering hazards in a system. This activity has been performed for many years in safety engineering and is a straightforward...
Flight safety is an important problem in aviation industry and flight accidents are the result of multi-elements which affect each other. In order to analyze the development process of flight accidents, from the view of system safety, the flight process was abstracted to a hybrid dynamic system based on discrete event dynamic system theory, and a systemic causal simulation model is discussed. Through...
The growing use of computers to control critical functions of complex systems brings with it concerns over dependability of the software. Engineers involved in developing such systems use a range of techniques for hazard and risk assessment, each offering a different safety perspective. Confidence in the system, and ultimately its certification, is (partially) dependent on confidence in consistency...
The next generation of military capabilities will hinge on systems of systems. Such systems can introduce emergent hazards that must be adequately dealt with before the system of systems can be employed. Traditional hazard analysis techniques do not address the complexity and size of systems of systems. In this paper we describe a technique for conducting interface hazard analysis for systems of systems...
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