نتایج جستجو برای: homogeneous inhomogeneous distribution

تعداد نتایج: 683793  

2014
N. Vadori

Abstract: Limit theorems for functionals of classical (homogeneous) Markov renewal and semi-Markov processes have been known for a long time, since the pioneering work of R. Pyke and R. Schaufele (1964). Since then, these processes, as well as their time-inhomogeneous generalizations, have found many applications, for example in finance and insurance. Unfortunately, no limit theorems have been ...

2017
G. V. Sotnikov I. N. Onishchenko

One of shortcomings of the dielectric wakefield accelerators (DWA) limiting the effective length of an acceleration is susceptibility of drive bunches to beam breakup (BBU) instability [1]. With the purpose to suppress this instability recently it has been proposed to fill the drift channel of dielectric structure with plasma of certain density [2]. The investigations of plasma DWA (PDWA) [2] w...

2007
H. X. Peng L. Yin

The principal advantage of metal matrix composites (MMCs) over unreinforced monolithic alloys is that their physical and mechanical properties can be enhanced by tailoring both their microstructure and the 3D spatial arrangement of reinforcement. The former has been realised by adjusting volume fraction, size and aspect ratio of the reinforcing phases in the conventional approach to MMCs proces...

Journal: :Soft matter 2015
Veronika Schubertová Francisco J Martinez-Veracoechea Robert Vácha

Cellular uptake is a crucial process in nanomedicine and drug-delivery; however, the factors that affect its efficiency/speed are not well understood. We report computer simulations on passive uptake via receptor-mediated endocytosis of nanoparticle coated with ligands. In particular, we study how the distribution of ligands on the nanoparticle surface influences the uptake rate. The speed of m...

Journal: :European Journal of Information Technologies and Computer Science 2023

Markov Stationary Features (MSF) based on homogeneous chain model, for content-based image analysis, is getting popularity nowadays. It not only considers the distribution of colors, just as histogram method does, but also characterizes spatial co-occurrence patterns. However, handling a large-scale database images with degree heterogeneity, simple MSF sufficient to discriminate one requires. I...

2001
Gaetano Fiore

We show that, if there exists a realization of a Hopf algebra H in a H-module algebra A, then one can split their cross-product into the tensor product algebra of A itself with a subalgebra isomorphic to H and commuting with A. This result applies in particular to the algebra underlying inhomogeneous quantum groups like the Euclidean ones, which are obtained as cross-products of the quantum Euc...

1994
Iosif Pinelis

We consider Hotelling’s T 2 statistic for an arbitrary d-dimensional sample. If the sampling is not too deterministic or inhomogeneous, then under zero means hypothesis, T 2 tends to χd in distribution. We are showing that a test for the orthant symmetry condition introduced by Efron can be constructed which does not essentially differ from the one based on χd and at the same time is applicable...

Journal: :Physical review letters 2009
A S Kalabukhov Yu A Boikov I T Serenkov V I Sakharov V N Popok R Gunnarsson J Börjesson N Ljustina E Olsson D Winkler T Claeson

Medium-energy ion spectroscopy (MEIS) has been used to study the depth profile and deduce the distribution of possible cationic substitutions in LaAlO3/SrTiO3 (LAO/STO) heterointerfaces. Analysis of La and Sr peaks in aligned and random MEIS spectra indicates that the surface layers of LAO on an STO substrate are not homogeneous and stoichiometric if the film thickness is less than 4 unit cell ...

2008
Yann Bugeaud Michel Laurent

– In Diophantine Approximation, inhomogeneous problems are linked with homogeneous ones by means of the so-called Transference Theorems. We revisit this classical topic by introducing new exponents of Diophantine approximation. We prove that the exponent of approximation to a generic point in R n by a system of n linear forms is equal to the inverse of the uniform homogeneous exponent associate...

Journal: :Physical review letters 2002
A J C Ladd

Simulations describing the settling of suspensions of solid particles bounded by a rigid container are presented. Results are compared with previous simulations of homogeneous suspensions with periodic boundary conditions. Velocity fluctuations in vertically inhomogeneous suspensions are found to saturate under conditions similar to those found in laboratory experiments, while in vertically hom...

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