Wydział Fizyki, Astronomii i Informatyki Stosowanej / Faculty of Physics, Astronomy and Informatics Przeglądanie wg tytułu
Repozytorium Uniwersytetu Mikołaja Kopernika
Wydział Fizyki, Astronomii i Informatyki Stosowanej / Faculty of Physics, Astronomy and Informatics Przeglądanie wg tytułu
Wyświetlono pozycje 59-78 z 239
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(Elsevier B.V., 2014)Thermoluminescence (TL) of strontium orthosilicate doped with Eu2+ has been investigated in the range RT- 750 K. Trap parameters of a TL peak at 450 K established by means of glow curve analysis suggest the possibility of ...
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(Elsevier, 2015)Zn1-x-yBexMgySe mixed crystals investigated in this work were grown from the melt by the high pressure high temperature modified Bridgman method in the range of composition 0 < x,y < 0.33. Photopyroelectric (PPE) calorimetry ...
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(Optical Society of America, 2012)Speckle pattern, which is inherent in coherence imaging, influences significantly axial and transversal resolution of Optical Coherence Tomography (OCT) instruments. The well known speckle removal techniques are either ...
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(2021-12-10)Gated trilayer graphene shows energy gap and three topologically protected gaplessstates when the stacking order changes from ABC to CBA. Here we such a trilayer, but with a part of the internal layer cut and removed ...
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(European Physical Society, 2017-06-01)Reliable cross-sections for electron-molecule collisions are urgently needed for numerical modeling of various processes important from technological point of view. Unfortunately, a significant progress in theory and ...
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(2010-02-18)We show that each entanglement witness detecting given bipartite entangled state provides an estimation of its concurrence. We illustrate our result with several well known examples of entanglement witnesses and compare ...
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(EDP Sciences, 2016)Context. Methanol masers at 6.7 GHz are well known tracers of high-mass star-forming regions. However, their origin is still not clearly understood. Aims. We aimed to determine the morphology and velocity structure for a ...
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(EDP Sciences, 2014)Context. Methanol masers at 6.7 GHz are associated with high-mass star-forming regions (HMSFRs) and often have mid-infrared (MIR) counterparts characterized by extended emission at 4.5 μm, which likely traces outflows from ...
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(EDP Sciences, 2019)Magnetohydrodynamical simulations show that the magnetic field can drive molecular outflows during the formation of massive protostars. The best probe to observationally measure both the morphology and the strength of this ...
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(2013-02-05)Celem pracy było przedstawienie przykładów zastosowań kwantowej teorii filtracji w optyce kwantowej. Model ciągłych nieniszczących obserwacji markowskiego układu otwartego posłużył w pracy do rozważenia skoków kwantowych, ...
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(2013-08-14)The article contains the proposed use of the Ethernet interface as an example of transmission between a dedicated device to the Internet network. The communication model used wireless access point, which enabled the wireless ...
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(2012-03-02)Exposed positive maps in matrix algebras define a dense subset of extremal maps. We provide a sufficient condition for a positive map to be exposed. This is an analog of a spanning property which guaranties that a positive ...
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(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 ...
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(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 ...
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(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 ...
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(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 ...
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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 ...
Wyświetlono pozycje 59-78 z 239