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In the design of Safety Instrumented System (SIS), the cost of construction and maintenance of the system should be taken into account comprehensively under the circumstance that the safety level is guaranteed. The average possibility of failure on demand (PFDavg) of SIS is the main criteria to assess its safety performance. The paper focuses on the safety performance and cost optimization of SIS...
Delay tolerant networks (DTNs) can be composed of multiple heterogeneous groups (i.e., communities) of nodes. The nodes from these communities can cooperate with each other in order to carry and forward data packets so that the performance (e.g., delay) can be improved. However, this cooperation will incur additional cost on the nodes. In this paper, we first develop an analytical model to investigate...
Costs as well as safety performance are usually taken into account in safety instrumented system design. Modeling a SIS is time consuming and fallible and altering a SIS design may lead to recreating the model, so it's difficult to compare one design with others effectively and quickly. Markov model and its automatic creation for SIS are described in this paper, followed by the analysis of SIS life...
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