We examine the power of constant depth circuits with sigmoid (i.e. smooth) threshold gates for computing boolean functions. It is shown that, for depth 2, constant size circuits of this type are strictly more powerful than constant size boolean threshold circuits (i.e. circuits with linear threshold gates). On the other hand it turns out that, for any constant depth d, polynomial size sigmoid t...

يناثلا ىفشتسلما ،ةماعلا ةحارلجا مسق يف يدعبلا ليلحتلا اذه يرجأ :ةقيرطلا انمق دقل .م2014 ماع يف ينصلا ،وسغنايج ةعطاقم ،وجوس ،وكوس ةعمالج عباتلا ،نيلاديم تانايب ةدعاق يف كلذو عوضولماب طبترلما يملعلا بدلأا يف ثحبلاب ةرتفلا للاخ كلذو يويلحا بطلل ةينيصلا تانايبلا ةدعاقو ،نيركوكو ،سيبيمإو تاملكلاو نيوانعلا مادختساب ثحبلا اذهب انمق دقل .م2014 ىلإ م1990 نم نولوقلا يف ةرغفلا ثادحإ ،قافصلا جراخ نولوقلا ي...

The dissolved oxygen concentration in the wastewater treatment process (WWTP) must remain a specific range while factory operates. augmented positive identification (PID) controller with nonlinear element (sigmoid function) is proposed to assure stability and reduce uncertainties direct reuse/recycling model. gains (PID sigmoid for uncertain processes are tuned using particle swarm optimization...

This paper presents a step-by-step procedure for the simulation of photovoltaic modules with numerical values, using MALTAB/Simulink software. The proposed model is developed based on mathematical PV module, which solar cell employing one-diode equivalent circuit. output current and power characteristics curves highly depend some climatic factors such as radiation temperature, are obtained by s...

The contrast of an image is a feature which determines how image looks better visually. In this paper, we are analysing the capability of activation functions for contrast enhancement. Activation functions are classically used in neural network. In this paper, Activation function creates a mask which is operated on the image on pixel by pixel basis. On the basis of activation function the pixel...

This article proposes a hypothetical model for determining rate of diffusion of an innovation in a system. The model modifies Everett Rogers’ S-curve using an index created from Gartner’s hype cycle phases. Rogers’ model for technology innovation adoption demonstrates that cumulative technology diffusion in a system from zero through the late majority adopters’ phase forms a curve resembling th...

This paper addresses the problem of separating concurrent speech through a spatial filtering stage and a subsequent time-frequency masking stage. These stages complement each other by first exploiting the spatial diversity and then making use of the fact that different speech signals rarely occupy the same frequency bins at a time. The novelty of the paper consists in the use of auditorymotivat...

This paper presents novel circuit configurations to realize Neuron Activation Function (NAF) and the Derivative of Neuron Activation Function (DNAF) with low power dissipation. The circuits realize NAF and DNAF simultaneously with programmable characteristics. In the proposed configurations, tan sigmoid and log sigmoid NAFs and their derivative can be obtained from the same circuit simultaneous...

This paperpnsenb a radical-partitioned neural network system using a modified Sigmoid fvnction and a weight-dotted radical selector f o r large-volume Chinese characters recognition VLSI. Wiih a modified Sigmoid function and the weight-dotted radical selector, the recognition rate of 1000 radical-partitioned Chinese characters can be enhanced to 90% from 70% for the input samples with 15% rando...