Results 41 to 50 of about 416,391 (281)
Hydrodynamic dispersion in a self-similar geometry [PDF]
Journal of Physics A: Mathematical and General, 1987 The authors investigate the dispersion of a dynamically neutral tracer flowing in a self-similar, hierarchical model of a porous medium. They consider a purely convective limit in which the time for tracer particles to traverse a given bond is strictly proportional to the inverse of the flux in the bond; the effect of molecular diffusion is neglected ...
S Redner, J Koplik, D Wilkinson
openaire +1 more source
An electron jet pump: The Venturi effect of a Fermi liquid [PDF]
, 2011 A three-terminal device based on a two-dimensional electron system is investigated in the regime of non-equilibrium transport. Excited electrons scatter with the cold Fermi sea and transfer energy and momentum to other electrons.
Bunsen R. +8 more
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Filter Cleaning Using Gas Injection [PDF]
, 1995 A filter cleaning process using gas injection is considered. An estimate for the minimum mass flow rate out of the gas injector and the corresponding injector/filter geometry is found. The estimates are based on a similarity solution for a free turbulent
Hurwitz, M.F. +3 more
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Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM
FEBS Letters, EarlyView.Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley +1 more source
Diffusion Maps for Multimodal Registration
Sensors, 2014 Multimodal image registration is a difficult task, due to the significant intensity variations between the images. A common approach is to use sophisticated similarity measures, such as mutual information, that are robust to those intensity variations ...
Gemma Piella
doaj +1 more source
Detecting image differences based on reference EMD-filters [PDF]
Компьютерная оптика, 2018 In our previous works dealing with detecting differences in images in the case of substantial variations in brightness and geometry of an object, we proposed a morphological scheme for image analysis based on diffusion and reference mosaic filters.
Maxim Lebedev +3 more
doaj +1 more source
Exact heat kernel on a hypersphere and its applications in kernel SVM
, 2017 Many contemporary statistical learning methods assume a Euclidean feature space. This paper presents a method for defining similarity based on hyperspherical geometry and shows that it often improves the performance of support vector machine compared to ...
Song, Jun S., Zhao, Chenchao
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Magnetic collimation of meridional-self-similar general relativistic MHD flows [PDF]
, 2014 We present a model for the spine of relativistic MHD outflows in the Kerr geometry. Meridional self-similarity is invoked to derive semi-analytical solutions close to the polar axis.
Cayatte, Véronique +3 more
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FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
Smooth Parametrizations in Dynamics, Analysis, Diophantine and Computational Geometry [PDF]
, 2014 Smooth parametrization consists in a subdivision of the mathematical objects under consideration into simple pieces, and then parametric representation of each piece, while keeping control of high order derivatives.
Yomdin, Y.
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