1,721,114 research outputs found
Concilier famille et travail en Italie: droit et pratiques
No full textsaggio scritto a quattro mani dalle due autrici, nell'ambito di una ricerca internazionale per la quale sono state le due referenti italian
Residui di alcuni antiparassitari negli alimenti: Confronto tra dati sperimentali e soglie tossicologiche
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Impact of RNS coding overhead on FIR filters performance
No full textIn this paper a design space exploration for FIR filter implementations in Residue Number System (RNS) is presented. The exploration regards different aspects of the RNS FIR filter design such as the dynamic range, the overhead due to the coding of the RNS base with respect to the application dynamic range, and delay-area tradeoffs. The design space exploration and its results, are helpful in evaluating the effects of the RNS coding overhead and to choose an efficient filter architecture trading-off filter order, dynamic range, clock frequency and area. © 2007 IEEE
Hardware implementation of an echo-canceller for DVB-T on-channel repeaters
No full textThe necessity to obtain a better area coverage for services such as terrestrial digital television (DVB-T) is often obtained by using isofrequency channel repeaters. In this case the repeater receives at the input part of the transmitted signal and consequently an echo canceller is requested. The echo canceller is often based on a loop comprising a complex FIR filter with variable coefficients, that are calculated from the autocorrelation function of the received signal. In this paper, a hardware implementation of an Echo-canceller is presented. A board based on a Texas Instruments floating-point DSP and an Altera Cyclone II FPGA has been used for the final prototype. © 2007 IEEE
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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