Redundancy allocation problem (RAP) has attracted many researchers in recent years as it
is very important aspect in the field of reliability and system engineering. It plays an …

System failure engineering may encompass reliability, safety, security, maintainability, risk,
and quality control. In this paper we pay a unified view, ie, a failure-oriented view to system …

This paper considers the multi-objective reliability redundancy allocation problem of a series
system where the reliability of the system and the corresponding designing cost are …

Crude oil tank fire and explosion (COTFE) is the most frequent type of accident in petroleum
refineries, oil terminals or storage which often results in human fatality, environment …

In this paper, we present a new method to deal with the performance evaluation of weapon
systems using fuzzy arithmetic operations. An example of tactical missile systems selection …

In this article, we envisage the hexagonal number from various distinct rational perspectives
and viewpoints to give it a look of a conundrum. Hexagonal fuzzy number is used as an …

Z-number, combined with constraint and reliability of the information, is an effective frame to
simulate the thinking of humans. How to derive knowledge of Z-numbers, especially from the …

Appropriate supplier selection due to its direct impact on profitability and maintaining the
competitive status of an organization is one of the vital decisions for each company. Data …

In general fuzzy sets are used to analyze the fuzzy system reliability. Here intuitionistic fuzzy
set theory for analyzing the fuzzy system reliability has been used. To analyze the fuzzy …

The construction of generalised spherical fuzzy number (GSFN) is a reliable philosophy to
design and understanding of vagueness and impreciseness. In this study, at first, the authors …