نتایج جستجو برای: larg practices
تعداد نتایج: 181028 فیلتر نتایج به سال:
In this paper, we propos e a new algorithm in reversible data hiding, with the applications of copyright and privacy protection for natural image s. Security issues for digital images have long been an important topic in research and practical applications, and reversible data hiding has attracted more and more attention. Unlike conventional schemes, we take the prediction of luminance values a...
During immune surveillance and inflammation, leukocytes exit the vasculature through transient openings in the endothelium without causing plasma leakage. However, the exact mechanisms behind this intriguing phenomenon are still unknown. Here we report that maintenance of endothelial barrier integrity during leukocyte diapedesis requires local endothelial RhoA cycling. Endothelial RhoA depletio...
În cele ce urmează este prezentat un sistem de analiză automată a scenei, bazat pe imaginile (“preview”-uri) achiziţionate de camera foto înainte de captarea fotografiei. În urma analizei, scena este clasificată fără intervenţia utilizatorului în “peisaj” sau “non-peisaj”, scopul acestei clasificări fiind acela de a stabili cele mai potrivite valori ale parametrilor de expunere. Soluţia propusă...
We consider hamiltonians HB=Ho+ ,3HI(g),where Ho is the hamiltonian of a free Bose field $(x) of mass m> 0 in two-dimensional space-time, H I ( g ) = jg(x): P($(x)): dx where geO is a spatial cutoff and P is an arbitrary polynomial which is bounded below, and the coupling constant ,3 is in the cut plane, i.e. /3# negative real. We show that HB generates a semigroup with hypercontractive propert...
We develop a methodology for studying “large deviations type” questions. Our approach does not require that the large deviations principle holds, and is thus applicable to a larg class of systems. We study a system of queues with exponential servers, which share an arrival stream. Arrivals are routed to the (weighted) shortest queue. It is not known whether the large deviations principle holds ...
all branches of human science, each one has considered and analyzed the factor of development. nearly every year hundreds of families from rural populations migrated to the city center to city center meanwhile, the only the field of science which can judge and discuss about human- environment relationship by the tools of developmental concept is geography that study regional sustainable develop...
abstract the primary purpose of this study was to explore the actual practices and cognitions of two groups of iranian eap teachers, i.e. language teachers and content teachers, with respect to teaching reading-comprehension and vocabulary. to this end, tehran university of medical sciences which authorizes both groups of teachers to teach eap courses was selected as the context of the study s...
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