We study a modification of the Hoppensteadt-Izhikevich canonical model for networks of class I neurons, in which the ‘pulse’ emitted by a neuron is smooth rather than a δ-function. We prove two types of results about synchronization and desynchronization of such networks, the first type pertaining to ‘pulse’ functions which are symmetric, and the other type in the regime in which each neuron is...

A novel and eective method based on Haar wavelets and Block Pulse Functions(BPFs) is proposed to solve nonlinear Fredholm integro-dierential equations of fractional order.The operational matrix of Haar wavelets via BPFs is derived and together with Haar waveletoperational matrix of fractional integration are used to transform the mentioned equation to asystem of algebraic equations. Our new met...

<p>The paper has demonstrated the first order surface grating fiber coupler under period chirp and apodization functions variations effects. The Fiber transmittivity/reflectivity, index change mesh transmission cross-section are clarified against length with quadratic/cubic root Gaussian/uniform functions. delay dispersion simulated wavelength function. As well as output pulse intensity i...

in this paper, the results of design and implementation of the subsystems for generating loran pulse are proposed based on method of carrier’s pulse width change. in order to generate the desired pulse, firstly a pwm signal generated and then it is applied to a class-d switching amplifier. the results show that by generating appropriate pulses in digital fpga subsystem for application in switch...

Sexual selection is a powerful evolutionary force shaping mate choice phenotypes, initiating phenotypic shifts resulting in (or reinforcing) population divergence and speciation when such shifts reduce mating probabilities among divergent populations. In the Hawaiian cricket genus Laupala, pulse rate of male calling song, a conspicuous mating signal, differs among species, potentially behaving ...

The current work is aimed to fabricate a pulse generator to meet the requirements of control and process signals to be applied on to several basic constituting functional units of a radar system. The functional units of Radar system includes Exciter, Receiver, Radar Controller, TCSG and Duplexer Antenna.The synchronized pulses generated are operate on functional units is accomplished by generat...

We consider spontaneous four-wave mixing in a microring resonator, presenting photon-pair generation rates and biphoton wave functions. We show how generation rates can be simply predicted from the performance of the device in the classical regime and that a wide variety of biphoton wave functions can be achieved by varying the pump pulse duration.

By applying hybrid functions of general block-pulse functions and the second Chebyshev polynomials, integrodifferential systems are converted into a system of algebraic equations. The approximate solutions of integrodifferential systems are derived. The numerical examples illustrate that the algorithms are valid.

We consider random functions formed as sums of pulses F (t) = ∞ ∑ n=1 n −α/D G(n(t−Xn)) (t ∈ R ) where Xn are independent random vectors, 0 < α < 1, and G is an elementary “pulse” or “bump”. Typically such functions have fractal graphs and we find the Hausdorff dimension of these graphs using a novel variant on the potential theoretic method.

This study investigated the effect of five speech processing parameters, currently employed in cochlear implant processors, on speech understanding. Experiment 1 examined speech recognition as a function of stimulation rate in six Med-E1/CIS-Link cochlear implant listeners. Results showed that higher stimulation rates (2100 pulses/s) produced a significantly higher performance on word and conso...