منابع مشابه
On Divergence-free Drifts
We investigate the validity and failure of Liouville theorems and Harnack inequalities for parabolic and elliptic operators with low regularity coefficients. We are particularly interested in operators of the form ∂t−∆+ b ·∇ resp. −∆+ b ·∇ with a divergence-free drift b. We prove the Liouville theorem and Harnack inequality when b ∈ L∞(BMO) resp. b ∈ BMO−1 and provide a counterexample demonstra...
متن کاملDust “ Drifts ” on Mars
Introduction: Eolian sedimentary deposits are important because they provide a record of the direction and strength of winds on Mars and the type and flux of sediments transported by the winds. While Martian sand dunes and transverse aeolian ridges ("TARs") have been thoroughly studied, the sedimentary deposits left behind by blowing dust have received comparatively little attention to date. Wi...
متن کاملCategorizing Concepts for Detecting Drifts in Stream
Mining evolving data streams for concept drifts has gained importance in applications like customer behavior analysis, network intrusion detection, credit card fraud detection. Several approaches have been proposed for detection of concept drifts in the context of supervised learning in data streams. Recently, researchers have been looking into the problem of identifying concept drifts in unlab...
متن کاملAutokinetic drifts and gaze deviation.
A new method for evaluating the resting direction of the eyes based on the use of afterimages was developed. With this technique, the effect of gaze deviations relative to the individually determined resting direction was investigated among naive subjects. Moderate gaze deviations have no effect on reports of autokinesis. Only at extreme deviations which approach anatomical limits is the direct...
متن کاملDRIFTS and Knudsen cell study
DRIFTS and Knudsen cell study of the heterogeneous reactivity of SO2 and NO2 on mineral dust M. Ullerstam, M. S. Johnson, R. Vogt, and E. Ljungström Gothenburg University, Department of Chemistry, SE-41296 Gothenburg, Sweden Copenhagen University, Department of Chemistry, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark Ford Forschungszentrum GmbH Aachen, Süsterfeldstrasse 200, D-52072 Aache...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EPL (Europhysics Letters)
سال: 2019
ISSN: 1286-4854
DOI: 10.1209/0295-5075/124/60002