Accelerated life tests (ALTs) are widely used in many applications for the time-effective assessment of products. Statistical analysis of the performance degradation paths of the products combined with actual failure times have the competence to provide more accurate lifetime estimates. We propose two nonparametric methods for analyzing the ALT data where the degradation paths and failure times...

An important strategic element in the planning process of a railway operator is the development of a line plan, i.e., a set of routes (paths) on the network of tracks, operated at a given hourly frequency. The models described in the literature have thus far considered only lines that halt at all stations along their route. In this paper we introduce several models for solving line planning pro...

In Reliability Demonstration Testing (RDT), finding the right sample size is very important since cost of prototypes high and difficult to make. If for RDT test less, amount information obtained from will be insufficient, conclusion meaningless; on contrary, if big/huge, in excess what required, resulting unnecessary costs. Most time, required time are decided based design. Resources terms batc...

Abstract This paper presents an imprecise predictive inference method for accelerated life testing. The is largely nonparametric, with a basic parametric function to link different stress levels. log-rank test used provide imprecision the parameter, which in turn provides robustness resulting lower and upper survival functions future observation at normal level. An application using data from l...