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Browsing Artykuły (WFAIS) by Title

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  • Otmianowska-Mazur, Katarzyna; Soida, Marian; Kulesza-Żydzik, Barbara; Hanasz, Michał; Kowal, Grzegorz (2008-12-11)
    In the present paper we construct maps of polarized synchrotron radio emission of a whole galaxy, based on local models of the cosmic ray (CR) driven dynamo. We perform numerical simulations of the dynamo in local Cartesian ...
  • Strzałkowski, Karol (Elsevier, 2014)
    In this work a complete thermal characterization of Cd1-x-yZnxMgxSe mixed crystals was carried out. Bulk semiconductors under investigation were grown from the melt by a high pressure modified Bridgman method for different ...
  • Drozdowski, Winicjusz; Przegiętka, Krzysztof; Wojtowicz, Andrzej J.; Oczkowski, Hubert Lucjan (Institute of Physics, Polish Academy of Sciences, 1999)
    Thermoluminescence of CaF2:Ce, BaF2, and BaF2:Ce irradiated at room temperature is reported. X-ray induced emission spectra of the samples show that both excitonic (due to e- + VK recombination) and Ce3+ d-f luminescence ...
  • Oczkowski, Hubert Lucjan; Przegiętka, Krzysztof; Wybourne, Brian; Kachnic, Marek; Krawiec, Arkadiusz (Elsevier Science Ltd, 1996)
    The initial interest in the total inventory of the radionuclide fission products ejected from Chernobyl has been replaced with concern about the deposition and accumulation in the environment of those isotopes with longer ...
  • Przegiętka, Krzysztof; Chruścińska, Alicja; Oczkowski, Hubert Lucjan; Molewski, Paweł (Versita, 2008)
    The subject of the investigations presented here is fixing dilemmatic character (transgressive or recessive) of the Poznań phase of the Vistulian (Weichselian) Glaciation and answering the question about the possibility ...
  • Bylicka, Bogna; Chruściński, Dariusz (2011-04-10)
    We analyze a class of 2-qudit circulant states. They define generalization of well known 2-qubit X-states. We formula the necessary and sufficient criteria for vanishing quantum discord. We illustrate our analysis by an ...
  • Drążkowska, Joanna; Hanasz, Michał; Kowalik, Kacper (2010-09-03)
    We present a new particle module of the magnetohydrodynamic (MHD) Piernik code. The original multi-fluid grid code based on the Relaxing Total Variation Diminishing (RTVD) scheme has been extended by addition of dust ...
  • Kozłowska, Anna; Wyrąbkiewicz, Kamil; Boniewicz, Mirosław (2013-08-14)
    The article compares the speed of ant algorithm implemented on the processor and the graphics card in the assignment problem. It is a fundamental issue optimization-combinatorial operations research. In computer science ...
  • Duch, Włodzisław (Springer, 2011)
    Understanding brain processes behind creativity and modeling them using computational means is one of the grand challenges for systems biology. Computational creativity is a new field, inspired by cognitive psychology and ...
  • Hanasz, Michał; Lesch, Harald (2003-03-27)
    We investigate favourable circumstances for fast magnetic reconnection in astrophysical plasmas based on recent results by Rogers et al. (2001). Given that a critical magnetic field structure with antiparallel field lines ...
  • Chruściński, Dariusz; Pytel, Justyna; Sarbicki, Gniewomir (2009-07-14)
    We provide a new class of indecomposable entanglement witnesses. In 4 x 4 case it reproduces the well know Breuer-Hall witness. We prove that these new witnesses are optimal and atomic, i.e. they are able to detect the ...
  • Chruściński, Dariusz; Pytel, Justyna (2010-06-15)
    We provide a class of optimal nondecomposable entanglement witnesses for 4N x 4N composite quantum systems or, equivalently, a new construction of nondecomposable positive maps in the algebra of 4N x 4N complex matrices. ...
  • Duch, Włodzisław; Szymański, Julian (2012)
    A Context Search algorithm used for lexical knowledge acquisition is presented. Knowledge representation based on psycholinguistic theories of cognitive processes allows for implementation of a computational model of ...
  • Hanasz, Michał; Otmianowska-Mazur, Katarzyna; Lesch, Harald; Kowal, Grzegorz; Soida, Marian; Wóltański, Dominik; Kowalik, Kacper; Pawłaszek, Rafał; Kulesza-Żydzik, Barbara (2008-12-31)
    We present new developments on the Cosmic--Ray driven, galactic dynamo, modeled by means of direct, resistive CR--MHD simulations, performed with ZEUS and PIERNIK codes. The dynamo action, leading to the amplification of ...
  • Hanasz, Michał; Wóltański, Dominik; Kowalik, Kacper; Kotarba, Hanna (2011-02-07)
    We present recent developments of global galactic-scale numerical models of the Cosmic Ray (CR) driven dynamo, which was originally proposed by Parker (1992). We conduct a series of direct CR+MHD numerical simulations of ...
  • Siejkowski, Hubert; Soida, Marian; Otmianowska-Mazur, Katarzyna; Hanasz, Michał; Bomans, Dominik J. (2010-09-27)
    Irregular galaxies are usually smaller and less massive than their spiral, S0, and elliptical counterparts. Radio observations indicate that a magnetic field is present in irregular galaxies whose value is similar to that ...
  • Siejkowski, Hubert; Soida, Marian; Otmianowska-Mazur, Katarzyna; Hanasz, Michał; Bomans, Dominik J. (2009-01-12)
    We investigate the cosmic ray driven dynamo in the interstellar medium of irregular galaxy. The observations (Chyzy et al. 2000, 2003) show that the magnetic field in irregular galaxies is present and its value reaches the ...
  • Kulpa-Dybeł, K.; Otmianowska-Mazur, Katarzyna; Kulesza-Żydzik, Barbara; Kowal, Grzegorz; Wóltański, Dominik; Hanasz, Michał; Kowalik, Kacper (2011-01-02)
    We study the global evolution of the magnetic field and interstellar medium (ISM) of the barred and ringed galaxies in the presence of non-axisymmetric components of the potential, i.e. the bar and/or the oval perturbations. ...
  • Hanasz, Michał; Otmianowska-Mazur, Katarzyna; Kowal, Grzegorz; Lesch, Harald (2008-12-19)
    We present a parameter study of the magnetohydrodynamical dynamo driven by cosmic rays in the interstellar medium (ISM) focusing on the efficiency of magnetic field amplification and the issue of energy equipartition between ...
  • Przegiętka, Krzysztof; Przegiętka, Marcin; Strobel, Andrzej (Muzeum Okręgowe w Toruniu, 2011)
    Zegar słoneczny jest najbardziej naturalnym, a zarazem jednym z pierwszych instrumentów, jakie stosowano do pomiaru czasu. Autorzy podejmują próbę przedstawienia historii toruńskich zegarów słonecznych, która dotąd nie ...

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