Fuzzy Reliability Optimization Models for Redundant Systems

A fuzzy reliability model for series-parallel systems

Fuzzy set based methods have been proved to be effective in handling many types of uncertainties in different fields, including reliability engineering. This paper presents a new approach on fuzzy reliability, based on the use of beta type distribution as membership function. Considering experts' ideas and by asking operators linguistic variables, a rule base is designed to determine the level ...

Fuzzy Hierarchical Location-Allocation Models for Congested Systems

There exist various service systems that have hierarchical structure. In hierarchical service networks, facilities at different levels provide different types of services. For example, in health care systems, general centers provide low-level services such as primary health care services, while the specialized hospitals provide high-level services. Because of demand congestion in service networ...

Novel models and algorithms for systems reliability modeling and optimization

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Reliability Optimization Models for Fault-Tolerant Distributed Systems

This paper presents four models to demonstrate our techniques for optimizing software and hardware reliability for fault-tolerant distributed systems. The models help us find the optimal system structure while considering basic information on reliability and cost of the available software and hardware components. Each model is suitable for a distinct set of conditions or situations. All four mo...

Optimization Models for Reliability of Modular Software Systems

This paper presents four optimization models to demonstrate that the optimization of software reliability within the available resources can be accomplished. The models help us find the optimal software system structure while considering basic information on reliability and cost of modules. Each model is applicable to a distinct situation. All four models maximize reliability while ensuring tha...

Reliability-optimization Based Models