An inhibitory network model that performs noise-shaping pulse-density modulation [1] was implemented with subthreshold analog MOS circuits, aiming at the development of ultralow-power Σ∆-type AD converters. Through circuit simulations, we evaluate the effects of the noise shaping produced by the network circuit. Keywords—VLSI, pulse density modulation, noise shaping, chaotic neural networks 1 M...

In order to guarantee the operation stability of high-voltage circuit-breaker, this paper extracts eigenvector of vibration signals based on mining of characteristic entropy of the wavelet packet obtained under the state of circuit breaker. Besides, the eigenvector of various fault samples is adopted as the input information of the BP network. After that, the author conducts training of the wel...

We consider a queuing network with M exponential service stations and with N customers. We study the behavior of a subsystem u, which has a single node as input and a single node as output, when the subsystem parameters are varied. An “equivalent” network is constructed in which all queues except those in subsystem u are replaced by a single composite queue. We show that for certain classes of ...

iran is a rather wide country, and, as a rule, the chrage per one call in s. t .d . (subscriber trunk dialing ) is required more compared with a local call , so, just after the opening of the std service widely in national telephone network, unconcerned use of the s. t. d. service has been caused on an incon- ceivable increase in telephone charge of th subscriber. this is a common problem for a...

Recently, optical interconnect has emerged as a possible alternative to electrical interconnect at chip-to-chip and on-chip length scales because of its potential to overcome power, delay, and bandwidth limitations of traditional electrical interconnect. This thesis examines the issues of variation involved in the implementation of a robust on-chip optical signal distribution network. First, th...