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Rome, Italy

Bertocchi G.,University of Modena and Reggio Emilia | Gambardella A.,Bocconi University | Jappelli T.,University of Naples Federico II | Nappi C.A.,ANVUR | Peracchi F.,University of Rome Tor Vergata
Research Policy

A relevant question for the organization of large-scale research assessments is whether bibliometric evaluation and informed peer review yield similar results. In this paper, we draw on the experience of the panel that evaluated Italian research in Economics, Management and Statistics during the national assessment exercise (VQR) relative to the period 2004-2010. We exploit the unique opportunity of studying a sample of 590 journal articles randomly drawn from a population of 5681 journal articles (out of nearly 12,000 journal and non-journal publications), which the panel evaluated both by bibliometric analysis and by informed peer review. In the total sample we find fair to good agreement between informed peer review and bibliometric analysis and absence of statistical bias between the two. We then discuss the nature, implications, and limitations of this correlation. © 2014 Elsevier B.V. All rights reserved. Source

Iazzi M.,International School for Advanced Studies | Fantoni S.,ANVUR | Trombettoni A.,International School for Advanced Studies | Trombettoni A.,CNR Institute of Materials

We derive and study the anisotropic Ginzburg-Landau and Lawrence-Doniach models describing a layered superfluid ultracold Fermi gas in optical lattices. We compute from the microscopic model the Josephson couplings entering the Lawrence-Doniach model across the crossover BCS-BEC passing from the 3D isotropic case to the quasi-2D one, showing that a model with only nearest-neighbor Josephson couplings is not adequate at the unitary limit (since the pairs have a diameter larger than the interlayer distance). We also show that the effective anisotropy of the system is strongly reduced at the unitary limit. Finally, we obtain a relation between the interlayer Josephson couplings and the Ginzburg-Landau masses: we find that using only couplings between adjacent planes is correct in the BEC side, while at the unitary limit one has to use also next-nearest-neighboring couplings. © Copyright EPLA, 2012. Source

The aim of this paper is to understand whether the probability of receiving positive peer reviews is influenced by having published in an independently assessed, high-ranking journal: we eventually interpret a positive relationship among peer evaluation and journal ranking as evidence that journal ratings are good predictors of article quality. The analysis is based on a large dataset of over 11,500 research articles published in Italy in the period 2004-2010 in the areas of architecture, arts and humanities, history and philosophy, law, sociology and political sciences. These articles received a score by a large number of externally appointed referees in the context of the Italian research assessment exercise (VQR); similarly, journal scores were assigned in a panel-based independent assessment, which involved all academic journals in which Italian scholars have published, carried out under a different procedure. The score of an article is compared with that of the journal it is published in: more specifically, we first estimate an ordered probit model, assessing the probability for a paper of receiving a higher score, the higher the score of the journal; in a second step, we concentrate on the top papers, evaluating the probability of a paper receiving an excellent score having been published in a top-rated journal. In doing so, we control for a number of characteristics of the paper and its author, including the language of publication, the scientific field and its size, the age of the author and the academic status. We add to the literature on journal classification by providing for the first time a large scale test of the robustness of expert-based classification. © 2015 Bonaccorsi A et al. Source

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