1,721,122 research outputs found
A fine-grained arithmetic optimization technique for high-performance/low-power data path synthesis
No full textWallace-tree compressor style has been widely recognized as one of the most effective implementation schemes for arithmetic computations in VLSI design. However, the scheme has been applied only in a rather restrictive way, that is, for implementing fast multipliers and for generating fixed structures without considering the characteristic of the input signals. The contributions of our work are (1) to extend the applicability of the Wallace scheme to any arithmetic circuit which consists of additions/subtractions/multiplications globally (instead of applying it to each operation) to produce a globally efficient architecture of the circuit; (2) to optimize the timing of the circuit for uneven signal arrival profiles; (Specifically, we present an efficient algorithm for generating a delay-optimal (bit-level) carry-save addition structure of an arithmetic circuit.) (3) to provide a comprehensive analysis of the switching activity of a (bit-level) carry-save addition structure, and based on which we derive an effective algorithm for synthesizing low power circuits. Putting these arithmetic optimization solutions together, a circuit designer will be able to fully understand the synthesis of arithmetic circuit based on the bit-level carry-save addition
Model-Based Stroke Extraction and Matching by Heuristic Search for Handwritten Chinese Character Recognition
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Microstructure and properties of carbon-sulfur-containing chromium deposits electroplated in trivalent chromium baths with thiosalicylic acid
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
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