نتایج جستجو برای: cancellation

تعداد نتایج: 11349  

Journal: :Journal of Pure and Applied Algebra 1987

2007
Yue Xu Chengqi Zhang

There are four types of diagnostic problems, among which cancellation diagnosis is the most diicult problem. In this paper, a neural network diagnosis model for solving cancellation diagnosis is presented. An important contribution of this paper is that the link weights of the network can be changed during network computing. The cancellation eeects among network nodes are represented by changin...

Journal: :J. Symb. Log. 2011
Tapani Hyttinen Meeri Kesälä

We continue to study nitary abstract elementary classes, de ned in [7]. We introduce a concept of weak κ -categoricity and an f-primary model in a א0 -stable simple nitary AEC with the extension property, and gain the following theorem: Let (K,4K) be a simple nitary AEC, weakly categorical in some uncountable κ . Then (K,4K) is weakly categorical in each λ ≥ min{κ,i(2א0 )+} . We have that if th...

2006
B. T. Welsch

I investigate the processes at work in the cancellation of normal magnetic flux in solar magnetograms and study the relationships between cancellation and the budget of free magnetic energy in the coronal magnetic field that can power solar flares and CMEs. After defining cancellation mathematically, I derive equations that quantify the evolution of free magnetic energy in response to arbitrary...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2013
Brian D Corneil Joshua C Cheng Samanthi C Goonetilleke

Adaptive adjustments of strategies help optimize behavior in a dynamic and uncertain world. Previous studies in the countermanding (or stop-signal) paradigm have detailed how reaction times (RTs) change with trial sequence, demonstrating adaptive control of movement generation. Comparatively little is known about the adaptive control of movement cancellation in the countermanding task, mainly b...

Journal: :Optics express 2013
Dar-Zu Hsu Chia-Chien Wei Hsing-Yu Chen Yi-Cheng Lu Cih-Yuan Song Chih-Chieh Yang Jyehong Chen

We develop a novel subcarrier-to-subcarrier intermixing interference (SSII) cancellation technique to estimate and eliminate SSII. For the first time, the SSII cancellation technique is experimentally demonstrated in an electro-absorption modulator- (EAM-) based intensity-modulation-direct-detection (IMDD) multi-band OFDM transmission system. Since the characteristics of SSII are seriously affe...

2002
Gary W. Elko Eric Diethorn

In the field of acoustic echo cancellation, it is well known that the amount of cancellation that can be obtained in real-world systems is limited. Euphemistically this has been referred to in the acoustic echo cancellation community as ”the 20 dB rule” [?]. This rule was formed from many real-world observations that one can typically obtain only about 20-30 dB of cancellation. The acoustic ech...

Journal: :Human brain mapping 2010
Seppo P Ahlfors Jooman Han Fa-Hsuan Lin Thomas Witzel John W Belliveau Matti S Hämäläinen Eric Halgren

Extracranial patterns of scalp potentials and magnetic fields, as measured with electro- and magnetoencephalography (EEG, MEG), are spatially widespread even when the underlying source in the brain is focal. Therefore, loss in signal magnitude due to cancellation is expected when multiple brain regions are simultaneously active. We characterized these cancellation effects in EEG and MEG using a...

Journal: :Speech Communication 1999
Alain de Cheveigné Hideki Kawahara

English) joint cancellation model guaranteed A. de Cheveigné, H. Kawahara, "Multiple pitches", last revised: 8 July 1998 2 Number of pages (including figures): Number of Figures: Number of Tables: The pitch of a periodic sound is strongly correlated with its period. To perceive the multiple pitches evoked by several simultaneous sounds, the auditory system must estimate their periods. This pape...

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