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    Ironcore or ironless:a comparison of linear motors for H-drives

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    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

    De motorversterker

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    Hybrid coils having an improved heat transfer capability

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    A hybrid coil ( 11 ) employs a wire layer ( 22 ), a wire layer ( 23 ) adjacent the wire layer ( 22 ), and a wire layer ( 24 ) adjacent the wire layer ( 23 ). The hybrid coil ( 11 ) further employs a thermal conductive insulator ( 42 ) physically disposed within a space between the wire layer ( 22 ) and the wire layer ( 23 ), and a thermal conductive insulator ( 43 ) physically disposed within a space between the wire layer ( 23 ) and the wire layer ( 24 ). The thermal conductive insulators ( 42, 43 ) can be electrically disconnected, and each thermal conductive insulator ( 42, 43 ) can consists of an aluminum foil ( 42 a, 43 a) having oxide layers ( 42 b, 43 b, 42 c, 43 c) on each side thereof

    Mechanische belasting

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