نتایج جستجو برای: flicker noise

تعداد نتایج: 197323  

Journal: :Neuroscience letters 2007
Elias Manjarrez Ignacio Mendez Lourdes Martinez Amira Flores Claudio R Mirasso

Harper [D.W. Harper, Signal detection analysis of effect of white noise intensity on sensitivity to visual flicker, Percept. Mot. Skills 48 (1979) 791-798] demonstrated that the visual flicker sensitivity was an inverted U-like function of the intensity of different levels of auditory noise from 50 to 90dB (SPL), without concomitant changes in the response bias. The aim of the present study was...

Journal: :Journal of neurology, neurosurgery, and psychiatry 2007
A Raninen S Vanni L Hyvärinen R Näsänen

BACKGROUND Blindness of a visual half-field (hemianopia) is a common symptom after postchiasmatic cerebral lesions. Although hemianopia severely limits activities of daily life, current clinical practice comprises no training of visual functions in the blind hemifield. OBJECTIVE To find out whether flicker sensitivity in the blind hemifield can be improved with intensive training, and whether...

Journal: :MATEC web of conferences 2021

In this paper, evolutionary algorithm is used to optimize the flicker function of band-limited Gaussian noise interference, which disturbs convergence adaptive based on LMS in GPS receiver, so that average null depth receiver under equal power lower, and better jamming effect achieved. The simulation results show paper has than different quantity.

2012
Patrick Powers

This application note is a technical guideline intended to reduce the amount of noise added to field measurement from a transducer via a transmitter to a receiver that is acquiring the transmission. This instruction is meant for applications where the transmitter has encoded the field measurement using pulse-width modulation and is driving a transmission line with a signal to be measured by a r...

2011
Miguel E. Ruiz Chee Wee Leong Samer Hassan

This paper presents the result of the team of the University of North Texas in the ImageCLEF 2011 Wikipedia and Medical Image Retrieval tasks. For Wikipedia image retrieval we compare the two query expansion methods: relevance models and query expansion using Wikipedia and flicker as external sources. The relevance models use a classic relevance feedback mechanism for Language models as propose...

Journal: :IEEE Transactions on Circuits and Systems Ii-express Briefs 2021

Analysis and design of a tetrahedral oscillator is presented. Expressions for the startup condition oscillation frequency are derived. A phase noise analysis thermal flicker carried out, using impulse sensitivity function theory. The contribution each type transistor studied, dominant negligible cyclostationary sources identified. There good agreement among theory Spectre simulation. Design gui...

2003
Per Arne Rikvold R.K.P. Zia

Per Arne Rikvold and R.K.P. Zia School of Computational Science and Information Technology, Center for Materials Research and Technology, and Department of Physics, Florida State University, Tallahassee, Florida 32306-4120 Center for Stochastic Processes in Science and Engineering, Department of Physics, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0435 (Dated: Febr...

2010
Anil Kottantharayil

Low frequency noise is getting increasing attention as dimensions scale down. Ths study of LFN is important because of its appearance as a fundamental limit for scaling, its impact on RF and analog applications but most importantly it can serve as a diagnostic tool for quality and reliability of MOSFETs. The interface between the dielectric and channel is not ideal. Further as newer materials a...

Measurement of magnitude and frequency of the voltage flicker is very important for monitoring andcontrolling voltage flicker efficiently to improve the network power quality. This paper presents twonew methods for measurement of flicker signal parameters using Shuffled Frog Leaping Algorithm(SFLA) and Imperialist Competitive Algorithm (ICA). This paper estimates fundamental voltage andflicker ...

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