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Browsing Artykuły (WFAIS) by Title

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Browsing Artykuły (WFAIS) by Title

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  • Gęsicki, Krzysztof (Wydawnictwo Uniwersytetu Mikołaja Kopernika, 2007)
    Zamierzeniem autora pracy jest zapoznanie czytelnika (studenta) z podstawami teoretycznymi niezbędnymi do czytania publikacji naukowych z dziedziny atmosfer i wiatrów gwiazdowych. Omówione zostaną najważniejsze procesy ...
  • Chruściński, Dariusz; Kossakowski, Andrzej (2010-10-22)
    We provided a class of legitimate memory kernels leading to completely positive trace preserving dynamical maps. Our construction is based on a simple normalization procedure. Interestingly, when applied to the celebrated ...
  • Chruściński, Dariusz; Pittenger, Arthur O. (2008-08-26)
    In a series of papers with Kossakowski, the first author has examined properties of densities for which the positive partial transpositrionm (PPT) property can be readily checked. These densities were also investigated ...
  • Chruściński, Dariusz; Kossakowski, Andrzej (2010-06-14)
    We propose a complete treatment of a local in time dynamics of open quantum systems. In this approach Markovian evolution turns out to be a special case of a general non-Markovian one. We provide a general representation ...
  • Chruściński, Dariusz; Wudarski, Filip A. (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 ...
  • Chruściński, Dariusz; Kossakowski, Andrzej (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 ...
  • Szymczak, Marian; Olech, Mateusz; Wolak, Paweł; Gerard, Eric; Bartkiewicz, Anna (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 ...
  • Hanasz, Michał; Wóltański, Dominik; Kowalik, Kacper (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 ...
  • Hanasz, Michał; Wóltański, Dominik; Kowalik, Kacper; Pawłaszek, Rafał (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 ...
  • Kulpa-Dybeł, K.; Otmianowska-Mazur, Katarzyna; Kulesza-Żydzik, Barbara; Kowal, Grzegorz; Hanasz, Michał; Wóltański, Dominik; Kowalik, Kacper (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 ...
  • Chruściński, Dariusz; Kossakowski, Andrzej (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 ...
  • Piwiński, Mariusz (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 ...
  • Hanasz, Michał; Sol, Helene (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 ...
  • Karwasz, Grzegorz; Karbowski, Andrzej (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 ...
  • Niedzielski, Andrzej (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 ...
  • Karwasz, Grzegorz (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 ...
  • Karwasz, Grzegorz (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” ...
  • Hanasz, Michał; Lesch, Harald (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 ...
  • Perucho, Manuel; Hanasz, Michał; Marti, Jose-Maria; Sol, Helene (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 ...
  • Duch, Włodzisław; Szymański, Julian (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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