Artykuły (WFAIS) Przeglądanie wg tytułu
Wyświetlono pozycje 83-102 z 219
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(2015-06-01)On constant movement of frontiers between Theology and Science: Physics Pope Benedict XVI wrote in 1979 in “Four sermons on the Creation of world” that scientific discoveries cause a kind of retreat of the faith on “defensive” ...
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(2003-09-24)We present a numerical algorithm for the incorporation of the active cosmic ray transport, into the ZEUS-3D magnetohydrodynamical code. The cosmic ray transport is described by the diffusion-advection equation. The applied ...
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(2002-12-05)A set of simulations concerning the influence of internal energy on the stability of relativistic jets is presented. Results show that perturbations saturate when the amplitude of the velocity perturbation approaches the ...
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(Elsevier, 2011-02-13)Psycholinguistic theories of semantic memory form the basis of understanding of natural language concepts. These theories are used here as an inspiration for implementing a computational model of semantic memory in the ...
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(2007-12-14)We conduct a series of magnetohydrodynamical (MHD) simulations of magnetized interstellar medium (ISM) disturbed by exploding stars. Each star deposits a randomly oriented, dipolar magnetic field into ISM. The simulations ...
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(2019-02)Trends in scintillators that are used in many applications, such as medical imaging, security, oil-logging, high energy physics and non-destructive inspections are reviewed. First, we address traditional inorganic and ...
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(2014-02-19)Na przestrzeni ostatniej dekady mamy do czynienia z gwałtownym wzrostem wykorzystania komputerów we wszystkich sferach życia. Obecnie większość ludzi na świecie nie wyobraża sobie funkcjonowania bez komputera podłączonego ...
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Kelvin-Helmholtz instability of relativistic jets - the transition from linear to nonlinear regime (1997-11-23)The observed wiggles and knots in astrophysical jets as well as the curvilinear motion of radio emitting features are frequently interpreted as signatures of the Kelvin-Helmholtz (KH) instability (eg. Hardee 1987). We ...
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(1996-04-25)We investigate the Kelvin-Helmholtz instability of stratified jets. The internal component (core) is made of a relativistic gas moving with a relativistic bulk speed. The second component (sheath or envelope) flows between ...
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(Wydawnictwo Naukowe Uniwersytetu Mikołaja Kopernika, 2016)W ostatnich latach obserwowany jest bardzo dynamiczny rozwój technologii informatycznych oraz związanych z nimi różnych usług sieciowych. Obecnie mamy do czynienia ze zjawiskiem polegającym na podłączaniu do sieci coraz ...
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(Strasbourg, France 23-27 April 2012, )One of the possible sources of an anisotropy in the power spectrum of 21 cm brightness fluctuations from the epoch of reionization is the delay in light traveltime along the line-of-sight. We examine the anisotropy between ...
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(Oxford University Press, 2014-01)Using a suite of detailed numerical simulations we estimate the level of anisotropy generated by the time evolution along the light cone of the 21 cm signal from the epoch of reionization. Our simulations include the physics ...
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(Springer Nature, 2020-06-24)Two-dimensional lead halide perovskites have demonstrated their potential as high-performance scintillators for X- and gamma-ray detection, while also being low-cost. Here we adopt lithium chemical doping in two-dimensional ...
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(Springer, 2012)Support Vector Machines (SVM’s) with various kernels have become very successful in pattern classification and regression. However, single kernels do not lead to optimal data models. Replacing the input space by a ...
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(Elsevier, 2015)The aim of this paper is to compare the measurement accuracy of photopyroelectric calorimetry in back detection configuration (BPPE) and infrared lock-in thermography (LT) for thermal diffusivity measurement of solid ...
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(Astronomy & Astrophysics, 2020-02-01)Context: Periodic flares of maser emission are thought to be induced either by variations of the seed photon flux in young binary systems or the pump rate regulated by stellar and accretion luminosities. Aims: We seek to ...
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(2010-01-19)If the dynamics of an open quantum systems is non-Markovian, its {asymptotic} state strongly depends on the initial conditions, even if the dynamics possesses an {invariant} state. This is the very essence of memory effects. ...
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(Instytut Fizyki PAN, 2006)We found that beta-irradiated samples of crystallite graphite and multi--walled carbon nanotubes emit light during heating above room temperature. This behaviour is rather surprising for semimetals. Due to the lack of deep ...
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(Institute of Electrical and Electronics Engineers, Computational Intelligence Society, 2012-06)Learning methods with linear computational complexity O(nd) in number of samples and their dimension often give results that are better or at least not worse that more sophisticated and slower algorithms. This is ...
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(2012-01-28)We characterize a class of Markovian dynamics using the concept of divisible dynamical map. Moreover we provide a family of criteria which can distinguish Markovian and non-Markovian dynamics. These Markovianity criteria ...
Wyświetlono pozycje 83-102 z 219