Comment on "Quantum discord through the generalized entropy in bipartite quantum states"

In [X.-W. Hou, Z.-P. Huang, S. Chen, Eur. Phys. J. D 68, 1 (2014)], Hou et al. present, using Tsallis' entropy, possible generalizations of the quantum discord measure, finding original results. As for the mutual informations and discord, we show here that these two types of quantifiers can take negative values. In the two qubits instance we further determine in which regions they are non-negative. Additionally, we study alternative generalizations on the basis of R\'enyi entropies.Comment: 5 pages, 4 figure

Dust in the Wind: A Definitive Hou/New Cinema Work

Book Summary: For younger critics and audiences, Taiwanese cinema enjoys a special status, comparable with that of Italian Neorealism and the French New Wave for earlier generations, a cinema that was and is in the midst of introducing an innovative sensibility and a fresh perspective. Hou Hsiao-hsien is the most important Taiwanese filmmaker working today, and his sensuous, richly nuanced films reflect everything that is vigorous and genuine in contemporary film culture. By combining multiple forms of tradition with a uniquely cinematic approach to space and time, Hou has created a body of work that, through its stylistic originality and historical gravity, opens up new possibilities for the medium. Chapter Summary: This chapter is part of the latest anthology devoted to Taiwan\u27s most famous director, Hou Hsiao-hsien. It argues that the lesser known Dust in the Wind is a definitive work for both Hou and the New Cinema movement that made him famous

Farmakologie*

As farmakoloog verbonde aan hierdie Universiteit sien ek my taak as tweeledig — eerstens om ’n bydrae te lewer tot die vorming van studente en behulpsaam te wees met die vergaring van kennis wat hulle later as aptekers nodig sal kry, en tweedens om te werk aan die uitbouing en voortgang van die wetenskap farmakologie. Dit is duidelik dat dit nie my bedoeling kan wees om voor so ’n gedifferensieerde gehoor soos u ’n sterk gespesialiseerde wetenskaplike betoog te hou nie. Vir vele van u is dit seker die eerste en enigste lesing wat u ooit sal hoor betreffende hierdie vertakking van die wetenskap. Daarom sal ek liefs ’n voordrag hou nie in nie, maar oor die farmakologie

A 3D Numerical Method for Studying Vortex Formation Behind a Moving Plate

In this paper, we introduce a three-dimensional numerical method for computing the wake behind a flat plate advancing perpendicular to the flow. Our numerical method is inspired by the panel method of J. Katz and A. Plotkin [J. Katz and A. Plotkin, Low-speed Aerodynamics, 2001] and the 2D vortex blob method of Krasny [R. Krasny, Lectures in Appl. Math., 28 (1991), pp. 385--402]. The accuracy of the method will be demonstrated by comparing the 3D computation at the center section of a very high aspect ratio plate with the corresponding two-dimensional computation. Furthermore, we compare the numerical results obtained by our 3D numerical method with the corresponding experimental results obtained recently by Ringuette [M. J. Ringuette, Ph.D. Thesis, 2004] in the towing tank. Our numerical results are shown to be in excellent agreement with the experimental results up to the so-called formation time