Sheffield, South Yorkshire, United Kingdom

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School of Health and Related Research (ScHARR)
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Department of Mechanical Engineering
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Department of Materials Science and Engineering
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    ABSTRACT: This paper proposes an approximate algorithm, called QEAM, which com-bines a P system with active membranes and a quantum-inspired evolution-ary approach. QEAM uses the hierarchical arrangement of the compart-ments and developmental rules of a P system with active membranes, and the objects consisting of quantum-inspired bit individuals, a probabilistic ob-servation and the evolutionary rules designed with quantum-inspired gates to specify the membrane algorithms. A large number of experiments carried out on bench satisfiability problems show that the QEAM outperforms the QEPS (quantum-inspired evolutionary algorithm based on P systems) and its counterpart quantum-inspired evolutionary algorithm.
    International Journal of Computers, Communications & Control (IJCCC) 02/2015; 10(2). DOI:10.15837/ijccc.2015.2.1757
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    ABSTRACT: The geopolitical changes of 1989 saw the development of multiple forces, of which migration is one. Greece experienced a shift from a traditionally sender country to a main destination country for immigrants from Central and Eastern Europe and the former Soviet Union. Employing a discursive social constructionist approach, this paper presents the ways in which immigrants are 'nationalized' in talking about Greekness and migrant integration in Greece. Firstly, it focuses on the construction of migration as inevitable. Secondly, the criteria and conditions of inclusion in the wider national group are presented. Finally, the discursive resources used in the extension of Greekness and the functions of this extension are explored as regards the banal aspects of national identity construction and its dilemmatic nature vis a vis the dilemma of prejudice. This dilemma seems to be managed by the participants of this study by extending Greekness, in order for various ethnic and national groups to be seemingly included in the wider national group, as a 'contract' of assimilation and morality.
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    ABSTRACT: We reconsider the closed form solution of the ptychographic phase problem called the Wigner Distribution Deconvolution Method (WDDM), which has remained discarded for twenty years. Ptychographic reconstruction is nowadays always undertaken by iterative algorithms. WDDM gives rise to a 4 dimensional data cube of all the relative phases between points in the diffraction plane. Here we demonstrate a novel method to use all this information, instead of just the small subset used in the original ‘stepping out’ procedure developed in the 1990 s, thus greatly suppressing noise. We further develop a method for designing an improved probe (illumination function) to further decrease noise effects during the deconvolution division. Combining these two with an iterative procedure for the deconvolution, which avoids the usual difficulty of a divide by a small number, we show in model calculations that WDDM competes well with the modern conventional iterative methods like ePIE (the extended Ptychographical Iterative Engine).
    Ultramicroscopy 12/2014; 147. DOI:10.1016/j.ultramic.2014.07.004


  • Address
    Western Bank, S10 2TN, Sheffield, South Yorkshire, United Kingdom
  • Head of Institution
    Sir Peter Middleton
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  • Phone
    0114 222 2000
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Employee Relations 05/2003; 25(3):262-280. DOI:10.1108/01425450310475856

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