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Model-based analysis is a well-established method to assess the dependability of a system before deployment. It is well known that, in highly dynamic contexts, the accuracy of the analysis results can be limited because unpredictable phenomena may affect the system during its operation. In such contexts, the analysis typically needs to be refined with data obtained from real system executions. In...
This article follows a line of papers focused on defining a method to improve the realization of reliability analysis during the System Engineering process. As MBSE becomes a fundamental concept for specifying and designing systems, our method takes full advantages of this approach and try to provide tools to ease the specification stage and the integration of RAMS early in the conception process...
Architecture-based software reliability analysis methods shall help software architects to identify critical software components and to quantify their influence on the system reliability. Although researchers have proposed more than 20 methods in this area, empirical case studies applying these methods on large-scale industrial systems are rare. The costs and benefits of these methods remain unknown...
System survivability is a new research idea and direction in information security. First, the developing phase and central contents of survivability research are discussed. Based on above discussion, an overview of research on system survivability analysis is synthetically proposed from qualitative analysis to quantitative analysis. The analysis framework, modeling techniques, measuring indexes and...
Future network infrastructure systems demand an extensible, continuous design framework to readily incorporate emerging technologies. Other domains have addressed this demand by moving towards an open design and development approach to capture the ingenuity of a community of developers. Yet, the design and development of current network infrastructure systems remains predominately closed. In this...
In this paper, we introduce a methodology for the reliability analysis of complex systems during their design. The challenge of such a method is to be efficient and accessible for system engineers. We gear this method towards the reuse of functional models expressed in the widely used languages of OMG (Object Management Group). We discuss the improvements brought by SysML for reliability studies in...
An early prediction of resource utilization and its impact on system performance and reliability can reduce the overall system cost, by allowing early correction of detected problems, or changes in development plans with minimized overhead. Nowadays, researchers are using both academic and commercial models to predict such attributes, by measuring them at earliest stages of system development. In...
Component-based software reliability analysis typically takes the reliability of component as an invariable property of component itself, disregards the fact that it changes when the component context it interacts changes due to a different operational profile of the system. This paper introduces a subdomain-based analysis approach to characterize the component into path-based architectural reliability...
The process can fail to deliver its expected outputs and consequently contribute to the introduction of faults into the software system. The process may fail due to ambiguous and unsuitable notations, unreliable tool-support, flawed methods and techniques or incompetent personnel. However, not all process activities pose the same degree of risks and therefore require the same degree of rigour. In...
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