Zawar Hussain

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a Control charts are widely used for process monitoring. They show whether the variation is due to common causes or whether some of the variation is due to special causes. To detect large shifts in the process, Shewhart-type control charts are preferred. Cumulative sum (CUSUM) and exponentially weighted moving average (EWMA) control charts are generally(More)
To study lifetimes of certain engineering processes, a lifetime model which can accommodate the nature of such processes is desired. The mixture models of underlying lifetime distributions are intuitively more appropriate and appealing to model the heterogeneous nature of process as compared to simple models. This paper is about studying a 3-component(More)
This paper proposes a new Active Queue Management (AQM) technique, called CHOKe-RH (CHOKe with Recent Drop History), to achieve congestion control in the network and to protect TCP responsive flows from unresponsive flows. CHOKe-RH retains the good features of RED and CHOKe, such as the low processing cost, while overcomes their limitations. CHOKe-RH(More)
This paper proposes a partial state Active Queue Management (AQM) technique, called CHOKe-FS, which addresses the problem of fair-bandwidth allocation among different flows sharing a common bottleneck link. CHOKe-FS is a packet-dropping mechanism for classifying and restricting unresponsive or misbehaving flows during congestion. It utilizes a direct bitmap(More)
In this paper, interesting improvements in [1] and [2] randomized response techniques have been proposed. The proposed randomized response technique applies Polya's urn process (see [3]) to obtain data from respondents. One of the suggested technique requires reporting the number of draws to observe a fixed number of cards of certain type. On the contrary,(More)
This article considers unbiased estimation of mean, variance and sensitivity level of a sensitive variable via scrambled response modeling. In particular, we focus on estimation of the mean. The idea of using additive and subtractive scrambling has been suggested under a recent scrambled response model. Whether it is estimation of mean, variance or(More)