Utilizing complex dynamics of chaotic maps and systems in encryption was studied comprehensively in the past two and a half decades. In 1989, Fridrich’s chaotic image encryption scheme was designed by iterating chaotic position permutation and value substitution some rounds, which received intensive attention in the field of chaos-based cryptography. In 2010, Solak et al. proposed a chosen-ciph...

For a bounded non-negative self-adjoint operator acting in a complex, infinitedimensional, separable Hilbert space H and possessing a dense range R we propose a new approach to characterisation of phenomenon concerning the existence of subspaces M ⊂ H such that M ∩R = M ∩R = {0}. We show how the existence of such subspaces leads to various pathological properties of unbounded self-adjoint opera...

INTRADUCTION: Besides the well-known classic risk factors and newly described minor of Coronary Artery Disease (CAD); novel so-called “geometric factors” are recently being investigated. The association cerebral lateralization (CL) with other diseases has been defined formerly. aim this study was to investigate relationship between CL CAD, coronary artery anomaly, dominance. METHODS: 1069 conse...

Given an action of a discrete quantum group (in the sense of Van Daele, Kustermans and Effros-Ruan) A on a C-algebra C, satisfying some regularity assumptions resembling the proper Γ-compact action for a classical discrete group Γ on some space, we are able to construct canonical maps μ r (μ respectively) (i = 0, 1 ) from the Aequivariant K-homology groups KK i (C, C| ) to the K-theory groups K...

How is quality control organized in the new "Mode 2" of the production of scientific knowledge? When institutional boundaries are increasingly blurred in a Triple Helix of University-Industry-Government relations, criteria for quality control in the production of scientific knowledge can be expected to change at the interfaces. The categorization in terms of two modes of knowledge production wa...

Recently Solak et al. [International Journal of Bifurcation and Chaos, 20 (2010), 1405–1413] cryptanalyzed the chaotic image encryption algorithm of Fridrich [International Journal of Bifurcation and Chaos, 8 (1998), 1259–1284], which was considered a benchmark for measuring security of many image encryption algorithms. This attack can also be applied to other encryption algorithms that have a ...