1,721,044 research outputs found
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
Estimates for Discrete Logarithm Computations in Finite Fields of Small Characteristic
No full textWe give estimates for the running-time of the function field sieve (FFS) to compute discrete logarithms in for small . Specifically, we obtain sharp probability estimates that allow us to select optimal parameters in cases of cryptographic interest, without appealing to the heuristics commonly relied upon in an asymptotic analysis. We also give evidence that for any fixed field size some may be weaker than others of a different characteristic or field representation, and compare the relative difficulty of computing discrete logarithms via the FFS in such cases.II
Secure Fast Evaluation of Iterative Methods: With an Application to Secure PageRank
No full textstatus: Publishe
A multifunctional turbo-based receiver using partial unit memory codes
No full textA multifunctional system comprising a turbo decoder, low complexity turbo equalizer and. data-aided frame synchronizer is developed to compensate for frequency-selective channels with fading. The turbo codes are based on Partial Unit Memory Codes, which may be constructed with higher free distance than equivalent recursive systematic convolutional codes and can achieve better performance than the latter. The purely digital multifunctional receiver is targeted for end-applications such as combat-radio and radio-relay, providing robust communication at low signal-to-noise ratio with performance approaching the Shannon limit. This paper will present the operation of a multifunctional turbo-based receiver, whose structure is reminiscent of a data-aided turbo synchronizer, both of which are described in detail
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Using TopGear in Overdrive: A More Efficient ZKPoK for SPDZ
Full text linksponsorship: We thank Ivan Damgard for his helpful comments. The work of Carsten has been done at Bar Ilan University, Israel. This work has been supported by the BIU Center for Research in Applied Cryptography and Cyber Security in conjunction with the Israel National Cyber Bureau in the Prime Minister's Office, in part by the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme under grant agreement No. 669255 (MPCPRO), in part by ERC Advanced Grant ERC-2015-AdG-IMPaCT, by the Defense Advanced Research Projects Agency (DARPA) and Space and Naval Warfare Systems Center, Pacific (SSC Pacific) under contract No. N66001-15-C-4070, and by the FWO under an Odysseus project GOH9718N. (BIU Center for Research in Applied Cryptography and Cyber Security, Israel National Cyber Bureau in the Prime Minister's Office, European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme|669255, ERC Advanced Grant ERC-2015-AdG-IMPaCT, Defense Advanced Research Projects Agency (DARPA)|N66001-15-C-4070, Space and Naval Warfare Systems Center, Pacific (SSC Pacific)|N66001-15-C-4070, FWO under an Odysseus project|GOH9718N)status: Publishe
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