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Software Defined Storage (SDS) systems are crucial elements in cloud environments, where huge amount of data managed by content and network providers (multimedia content, social data, gaming data etc.) are typically strongly unstructured. Such data, referred to as objects, are handled along with their metadata allowing a web-based addressing as in the REST paradigm. According to the Software Defined...
Fault tree analysis is a widespread-use method for measuring dependability parameters such as reliability and safety. Fault tree analysis is more popular than Markov modeling and Reliability Block Diagram (RBD), which need good background of mathematical equations and impose complex analysis for large systems. In this paper, accurate analysis of the fault tree is accelerated using a hardware/ software...
Contemporary network services don't have any statistical ranking mechanism for proactive security management. Since the emerging threats are actively exploiting the vulnerabilities in network services to compromise the system, not much attention has been paid to rank these services based on their vulnerability history. We argue in this paper that a reliable mechanism could be used to rank these services...
Web service composition is a distributed model to construct new Web service on top of existing primitive or other composite Web services. However, current service technologies, including proposed composition languages, do not address the reliability of Web service composition. Thus it is hard to predict the system reliability. In this paper, we propose a method to compute system reliability based...
Future network systems and embedded infrastructure devices in ubiquitous environments will need to consume low power and process large amounts of network packet traffic. In order to meet necessary high processing efficiency requirements, future processors will have many heterogeneous cores with reduced reliability due to low voltage, small transistor sizes, semiconductor wearout, and environmental...
Before performing drastic changes to a project, it is worthwhile to thoroughly explore the available options within the current structure of a project. An alternative to drastic change are internal changes that adjust current options within a software project. In this paper, we show that the effects of numerous internal changes can out-weigh the effects of drastic changes. That is, the benefits of...
Non-homogeneous gamma process (NHGP) models with typical reliability growth patterns are developed for software reliability assessment in order to overcome a weak point of the usual non-homogeneous Poisson process (NHPP) models. Though the analytical treatment of NHGPs as stochastic point processes is not so easy in general, they have an advantage to involve the NHPPs as well as a gamma renewal process...
In this paper, two problems of optimal resource allocation to modules during testing phase are studied: (1) maximization of the number of faults removed when the amount of testing-effort is fixed, and (2) maximization of the number of faults removed satisfying a certain percentage of initial faults to be removed with a fixed amount of testing-effort. These optimization problems are formulated as nonlinear...
Software reliability is the most important measure of software quality and, naturally, should be customer- oriented. In the current article, a reliability study related to the software exploitation behavior for the remote control of the GVR (gas vacuum recloser) reclosers, using the homogeneous Poisson method, is going to be examined.
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