5,594 research outputs found
Re-analysis of the nucleon space- and time-like electromagnetic form factors in a two-component model
Recent experimental data on space-like and time-like form factors of the
nucleon are analyzed in terms of a two-component model with a quark-like
intrinsic three-quark structure and quark-antiquark pairs.Comment: 9 pages, 5 figures, accepted for publication as a Brief Report in
Physical Review
Universality of citation distributions: towards an objective measure of scientific impact
We study the distributions of citations received by a single publication
within several disciplines, spanning broad areas of science. We show that the
probability that an article is cited times has large variations between
different disciplines, but all distributions are rescaled on a universal curve
when the relative indicator is considered, where is the
average number of citations per article for the discipline. In addition we show
that the same universal behavior occurs when citation distributions of articles
published in the same field, but in different years, are compared. These
findings provide a strong validation of as an unbiased indicator for
citation performance across disciplines and years. Based on this indicator, we
introduce a generalization of the h-index suitable for comparing scientists
working in different fields.Comment: 7 pages, 5 figures. accepted for publication in Proc. Natl Acad. Sci.
US
Academic Council Meeting Agenda and Minutes, June 5, 1978
Agenda and minutes from the Wright State University Academic Council Meeting held on June 5, 1978
Winter Quarter Faculty Meeting Agenda and Minutes, February 21, 1979
Agenda and minutes from the Winter Quarter Faculty Meeting held on February 21, 1979
Fall Quarter Faculty Meeting Agenda and Minutes, November 14, 1978
Agenda and minutes from the Fall Quarter Faculty Meeting Agenda and Minutes, November 14, 197
Heterogeneous pair approximation for voter models on networks
For models whose evolution takes place on a network it is often necessary to
augment the mean-field approach by considering explicitly the degree dependence
of average quantities (heterogeneous mean-field). Here we introduce the degree
dependence in the pair approximation (heterogeneous pair approximation) for
analyzing voter models on uncorrelated networks. This approach gives an
essentially exact description of the dynamics, correcting some inaccurate
results of previous approaches. The heterogeneous pair approximation introduced
here can be applied in full generality to many other processes on complex
networks.Comment: 6 pages, 6 figures, published versio
The impact of innovation on companies’ performance: an entropy-based analysis of the STAR market segment of the Italian Stock Exchange
This paper proposes the use of a class of concentration-based entropy measures as a new instrument to quantify business performances through an analysis of growth, profitability and productivity. Such measures are tested against a complex analysis of the link between innovation and performance for firms listed in the STAR market segment of the Italian Stock Exchange. In so doing, two targets are achieved: (1) the identification of parameters that are relevant for explaining the relationship between innovation and performance for the considered sample, with special focus on innovation type, innovation level and business size; (2) the elaboration of a new methodology – based on information theory – for the analysis of the impact of innovation on performance. The study shows that type of innovation and size play a key role in determining company performance.
This is an Accepted Manuscript of an article published by Taylor & Francis Group in Technology Analysis & Strategic Management on 04/09/2014, available online: http://www.tandfonline.com/10.1080/09537325.2014.95262
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