نتایج جستجو برای: drifts

تعداد نتایج: 3052  

2013
Mihaela Ignatova Igor Kukavica Lenya Ryzhik

We establish the Harnack inequality for advection-diffusion equations with divergencefree drifts of low regularity. While our previous work [IKR] considered the elliptic case, here we treat the more challenging parabolic problem by adapting the classical Moser technique to parabolic equations with drifts with regularity lower than the scale-invariant spaces.

2007
F. C. Meunier D. Reid A. Goguet S. Shekhtman C. Hardacre W. Deng

The reactivity of the species formed at the surface of a Au/Ce(La)O2 catalyst during the water–gas shift (WGS) reaction were investigated by operando diffuse reflectance Fourier transform spectroscopy (DRIFTS) at the chemical steady state during isotopic transient kinetic analyses (SSITKA). The exchanges of the reaction product CO2 and of formate and carbonate surface species were followed duri...

Journal: :Expert Syst. Appl. 2017
Tegjyot Singh Sethi Mehmed M. Kantardzic

Classifiers deployed in the real world operate in a dynamic environment, where the data distribution can change over time. These changes, referred to as concept drift, can cause the predictive performance of the classifier to drop over time, thereby making it obsolete. To be of any real use, these classifiers need to detect drifts and be able to adapt to them, over time. Detecting drifts has tr...

2002
Stuart M. Jacobsen

This paper discusses a method to evaluate post-trim drifts of laser trimmed film resistor. Based on mathematical flux field computations a drift index is deduced. This index as a part of mathematical laser trim simulations gives an imagination of expected post-trim drifts already on design stage and thereby a method to improve precision and reliability of hybrid IC’s by trim strategy design.

Journal: :polyolefins journal 0
valentina nikolaevna panchenko boreskov institute of catalysis sb ras, prospekt akad. lavrentieva 5, 630090, novosibirsk, russian federation ludmila viktorovna vorontsova boreskov institute of catalysis sb ras, prospekt akad. lavrentieva 5, 630090, novosibirsk, russian federation vladimir aleksandrovich zakharov boreskov institute of catalysis sb ras, prospekt akad. lavrentieva 5, 630090, novosibirsk, russian federation

the interaction of the external donor (propyltrimethoxysilane - ptms) with titanium-magnesium catalysts (tmcs) containing dibutylphthalate (dbp) as internal donor, which were prepared in different ways, was studied by chemical analysis and infrared diffuse reflectance spectroscopy (drifts). the chemical composition of the catalysts after their interaction with heptane solutions of ptms, ptms/al...

Journal: :The Journal of Japan Institute of Navigation 1993

Journal: :International Astronomical Union Colloquium 1977

Journal: :Perception & Psychophysics 1983

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