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    Liu, Q.

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    Liu, Q

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    Corrigendum to 'Conjugacy class size conditions which imply solvability'

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    This paper is a corrigendum to the paper( Kong, Q., Liu, Q., Conjugacy class size conditions which imply solvability, Bull.Aust.Math.Soc. 8888, 297-300(2013).). DOI: 10.1017/S000497271300096

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    IP protection of mesh NoCs using square spiral routing

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    Intellectual property (IP) core reuse is essential for the design process of system-on-chip (SoC). Network-on-chip (NoC) has been used as an independent IP core during SoC design. However, the NoC has not been protected via IP protection and paid attention on its innovations. This paper proposes the first known approach to protect the authorship and the usage legitimacy of NoCs using specially designed routing, square spiral routing. The special routing algorithm exploits routing redundancy inherent in the mesh NoCs and transports packets along the paths, which have very low probability to be taken under commonly used routing algorithms. These unique and diverse paths are exploited in this paper to embed information of the author and identify the legal buyer of NoCs, showing high robustness and credibility. The hardware implementation of an IP-protected mesh NoC shows that the area overhead is small, which is ~0.74%, and the power overhead is ~0.52%, while the functionality and performance of the network is not affected. In this paper, the approach is presented for the mesh NoC, but the idea is equally applicable to other NoC topologies where the unique and diverse paths also inherently exist

    Current-controlled interlinking converter with grid-supporting functionalities

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    A digital control system is proposed for grid-tied current-controlled interlinking converters that guarantees i) grid-supporting functionalities during grid connected operation and ii) automatic, prompt, and balanced power sharing among converters during islanded operation, without requiring mutual communication or supervising control. Thanks to the implementation of an underlying large-bandwidth inverter controller, several favorable features are conjointly achieved, including effective rejection of circulating harmonic currents, resiliency to grid parameters variations (e.g., frequency and magnitude), smooth transitions between grid-connected and islanded modes. All together, the obtained valuable features make the proposed controller a promising solution for the forthcoming microgrid and smart building scenarios
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