1,721,730 research outputs found
Parallel architectures for VLSI digital signal processing", 'Parallel architectures and Neural networks'
No full text
Blind Signal Processing by Complex Domain Adaptive Spline Neural Networks
No full textIn this paper, neural networks based on an adaptive nonlinear function suitable for both blind complex time domain signal separation and blind frequency domain signal deconvolution, are presented. This activation function, whose shape is modified during learning, is based on a couple of spline functions, one for the real and one for the imaginary part of the input. The shape control points are adaptively changed using gradient-based techniques. B-splines are used, because they allow to impose only simple constraints on the control parameters in order to ensure a monotonously increasing characteristic. This new adaptive function is then applied to the outputs of a one-layer neural network in order to separate complex signals from mixtures by maximizing the entropy of the function outputs. We derive a simple form of the adaptation algorithm and present some experimental results that demonstrate the effectiveness of the proposed method
A Class of Fast Complex Domain Neural Networks for Signal Processing Applications
Full text linkPublication in the conference proceedings of EUSIPCO, Rhodes, Greece, 199
Editorial: Cellular stress in blood cancer: Pathophysiology and therapeutic opportunities
Full text linkLinguaggio, violenza e pratiche simboliche. Lo strano caso della minaccia
No full textIn this article we focus on the role that symbolic practices play in the realisation of human
violence. Our interest is to show how the distinction between verbal and physical violence,
seemingly obvious and peaceful, is decidedly less clear-cut and more problematic when
looking at concrete cases. In specifically human practices, in fact, between the various
forms of violence there is not a clear cut but rather a blurred continuity. In particular,
let us try to answer these questions: is the aggressiveness of the human animal radically
conditioned by the possession of language? And, if so, in what way? In order to answer
these questions, we analyse in particular the discursive practice of threat, considered both
an exemplary case and a borderline case, which is particularly useful for bringing out the
ambivalence of the relationship between language and violence. We seek to show, in fact,
that threat is capable of avoiding but also anticipating, amplifying and, again, replacing
physical violence, and that the variety and unpredictability of these alternatives can be
explained precisely by the possession of language
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