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The Cellular Neural Network (CNN) based analog Viterbi decoder with a circular-buffered architecture is proposed for decoding partial response maximum likelihood (PRML) signals. The Viterbi decoder is an error correcting method utilizing the dynamic programming which is an efficient algorithm for finding the optimal path with the identical local computation performed at each node. In the previous...
A method to utilize the memristor as a multilevel memory has been proposed. There are several roadblocks in the practical use of memristors for multilevel memory. A difficulty comes from the nonlinearity in the ?? vs. q curve which makes it difficult to determine the proper pulse width for desired resistance values. Another one comes from the property of the memristor which integrates any kind of...
A large scale landslide occurred in the Tal valley of Garhwal Himalaya in late January, 1990. The most interesting feature associated with this slide was the 4 m uplift of a 200 m long and 25 m wide part of the river bed (at an average rate of 13.8 cm/day) between 28 January and 25 February 1990. Studies revealed that the slide occurred because of complex slope processes consisting of rotation and...
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