System reliability is considered as an important performance index. Performance of engineering systems can be assessed by various techniques. The traditional analytical approach consists of developing a mathematical model that represents the system and to evaluate its reliability indices. There...

The theory of change point analysis finds applications in diverse fields such as stock market analysis, industrial quality control and reliability studies. In some real life applications, abrupt changes in the hazard function are observed due to overhauls, major operations or specific...

In this paper we consider a cold standby system of two components with a single repair facility. The lifetime of a component is not necessarily independent of the repair time of the other component because there will be some pressure or load on the repairman if the working unit fails while...

We investigate historically troublesome threshold autoregressive (TAR) model specification in the context of epidemiologic surveillance with meta-models of log likelihood arising from reasonable combinations of TAR parameter values. In this research, a system for intelligently specifying TAR...

In this paper, a group acceptance sampling plan is developed based on truncated lifetimes when the lifetime of an item follows a generalized exponential distribution. For a given group size, the minimum number of groups and the acceptance number required are determined for specified consumer's...

The main tool of information theory is the Shannon entropy introduced by C.E. Shannon in 1948. This paper, concentrates on obtaining probabilistic models for a queueing system using the principle of maximum entropy subject to certain constraints. Some properties of queueing systems following the...

In this work, we discuss the steps for establishing a relationship between two time series in an industrial set up. The reheat furnace is the heart of the hot strip mill in a steel plant. In the hot strip mill, steel slabs are heated at high temperature at the reheat furnace before rolling....

Quartile Double Ranked Set Sampling (QDRSS) is investigated for estimating the population mean. The QDRSS estimators are compared to the simple random sampling (SRS), ranked set sampling (RSS) and quartile ranked set sampling (QRSS) estimators. It is shown that, the QDRSS estimators are unbiased...

The quality of a measurement or estimation procedure for the value of a parameter of interest refers to its reliability and its precision. The reliability of a measurement procedures is quantified in a straightforward way by the probability of the event of a correct measurement result. However,...

The concept of time-varying control limits with reference to EWMA charts is briefly introduced and for the asymptotic control charts proposed by Riaz and Abbasi [Interstat : 3, 2007], a proposal of time-varying control limits is made. The proposed limits are subsequently compared with those of...