Artykuły (WFAIS) Przeglądanie wg tytułu
Wyświetlono pozycje 71-90 z 219
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(2011-05-24)We characterize a convex subset of entanglement witnesses for two qutrits. Equivalently, we provide a characterization of the set of positive maps in the matrix algebra of 3 x 3 complex matrices. It turns out that boundary ...
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(2009-02-05)We provide a new class of positive maps in matrix algebras. The construction is based on the family of balls living in the space of density matrices of n-level quantum system. This class generalizes the celebrated Choi map ...
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(EDP Sciences, 2018)Context.High-mass young stellar objects (HMYSOs) can undergo accretion episodes that strongly affect the star evolution, the dynamics of the disk, and its chemical evolution. Recently reported ...
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(2009-11-05)We report first results of first global galactic-scale CR-MHD simulations of cosmic-ray-driven dynamo. We investigate the dynamics of magnetized interstellar medium (ISM), which is dynamically coupled with the cosmic-ray ...
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(2008-12-31)We conduct global galactic--scale magnetohydrodynamical (MHD) simulations of the cosmic--ray driven dynamo. We assume that exploding stars deposit small--scale, randomly oriented, dipolar magnetic fields into the differentially ...
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(2011-06-01)We present three-dimensional global numerical simulations of the cosmic-ray (CR) driven dynamo in barred galaxies. We study the evolution of the interstellar medium of the barred galaxy in the presence of non-axisymmetric ...
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(2007-12-07)We present very simple method for constructing indecomposable entanglement witnesses out of a given pair -- an entanglement witness W and the corresponding state detected by W. This method may be used to produce new classes ...
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(Nicolaus Copernicus University Press, 2013)The increasing complexity of modern telecommunication systems causes difficulties in both teaching and learning computer networks. Students have to learn theories and specifications of different technologies but also need ...
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(1997-11-20)The recent development of tomographic analysis of radio data shows the presence of sheaths around several extragalactic jets. We have studied the Kelvin-Helmholtz instability of such stratified jets, describing them as ...
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(2017-03-23)This paper demonstrates how hyper-constructivist methodology used in interactive lectures and workshops in physics for children and young people develops both the individual identity of young people and their social ...
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(2013-10-01)A brief outlook of evolution of the concept of planet in astronomy and a very short summary of current status of extrasolar planet searches results are presented. It is shown that the concept evolved substantially between ...
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(2016-07-07)On constant movement of frontiers between Science and Theology. Part 2: Metaphysics In the first part (Karwasz, Scientia et Fides, 3(1) 2015) entitled “Physics” we showed how discoveries of modern sciences do not contradict ...
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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 ...
Wyświetlono pozycje 71-90 z 219