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Polymeric cable thermal ageing is a key end-of-life consideration for medium voltage (MV) cable, low voltage (LV) power cable, and LV instrumentation and control (I&C) cables. This is particularly true for generation plant cables. For example, in wind generation plants, low thermal design margins and component compatibility issues have been known to cause internal over-heating of conductors and...
This paper presents a Gravitational Search Algorithm (GSA) based accurate parametric identification approach to identify a closed-loop Box-Jenkins structured Hammerstein model. The main objective of the employed algorithm is to estimate the parameters associated with the model by optimizing the fitness function which is the output mean square error (MSE) in this work. Efficient identification of a...
A sensor less wind speed estimation scheme for variable-speed wind turbine generators has been analysed in this paper. Neural network principles are applied for sensor less wind speed estimation. Model of one pitch controlled horizontal axis wind turbine along with DOIG based generation system has been used for this study. The aerodynamic characteristics of the wind turbine are approximated by a radial...
Low-k1 lithography results in features that suffer from poor lithographic yield in the presence of process variation. The problem is especially pronounced for lower level metals used for local routing, where bi-directionality gives rise to lithography unfriendly layout patterns. However, one can modify such wires without significantly affecting design behavior. In this paper, we propose to simultaneously...
The effect of mobile space charge on the high frequency properties and performance of DDR p+ p n n+ wurtzite GaN IMPATT diodes at terahertz frequency has been investigated. The studies are based on modeling and computer simulation method developed by the authors. The high frequency properties of DDR IMPATTs based on GaN at terahertz frequency regime are not available in the literature. It is observed...
We address the problem of video super resolution - obtaining a single high-resolution video whose spatial and temporal resolutions are higher than any of the input low-resolution videos. We employ a reconstruction based approach using MRF -MAP formalism, and use approximate optimization using graph cuts to carry out the reconstruction. We show that in our formulation it is possible to selectively...
This paper introduces a new technique for tracing the malicious nodes in mobile adhoc network (MANET) for wireless communication. As the mobile hosts are free to move any where and can change the wireless topology frequently, each node of MANET are much more vulnerable to insider attacks specially under noise and external attacks due to lack of permanent infrastructure, limited resources, central...
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