 | Arora, J.R. |
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 | Reliability of a Modular Standby Redundant System with Unrecoverable Failures
Author : Arora, J.R.
Source : Defence Science Journal ; Vol:26(2) ; 1976 ; pp 87-92
Subject : 621.38 Electronics
Keywords : N components;CDF;On line module
Abstract : This paper considers a stand by redundant system consisting of two identical modules. Each module is compose of N distinct components in series. The failure of a module may be attributed due to the failure of any of its N components. The ith components of a module has an arbitrary repair time CDF, G./sub i/ (t). The stand by module has been assumed to have a nonzero hazard rate even when unpowered. The failure of an on-line module is identified through a sensing device which has a probability 'c' of successfully recovering a fault in the on-line module. Expressions for the distribution of the Time to First System Failure (TFSF), the expected TFSF, and the reliability of the system have been derived by using the theory of Markov renewal processes. |
| | On Fitting a Surface
Author : Arora, J.R.
Source : Defence Science Journal ; Vol:29(2) ; 1979 ; pp 73-76
Subject : 51 Mathematics
Keywords : Orthonormal sets;Characteristic vectors
Abstract : This article deals with the problem of fitting the surface f=g (x)h(y) to the set of points (x/sub i/,y/sub j/,f/j). Functions g(x) and h(y) are supposed to be expressible in terms of orthonormal sets of functions. The desired coefficients of these functions are determined as characteristic vectors corresponding to the largest characteristic root of two materials having common characteristic roots. |
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