180,309 research outputs found
On R&D sectoral intensities and convergence clubs
No full textSectoral convergence in R&D intensities among firms is a concept that, although rarely formalized, has been at the center of discussions of industrial and non-industrial actors, such as entrepreneurs, institutions and academics. Far from being a settled issue, the subject has seen very limited empirical attention. We start from the few current evidences, which point to the existence of some convergence together with diffused heterogeneity. We recover and integrate the literature from convergence clubs and extend the work introducing the use of Pavitt taxonomy, and new estimation techniques. Particularly, we apply the concept of weak sigma convergence using a quite novel econometric factor model. Thanks to this, we provide evidences of both convergence for within sector intensities and of club convergence for across-sector intensities. Finally, the club classification according to "innovative effort" may be used as an alternative way to look at standard economic activities classifications
R. Lanciani, La memoria apostolorum al III miglio delV Appia e gli scavi di S. Sebastiano Dissertaz. della Pontif. Accad. di archeol., XIV, 1918 P. Styger, Monumento apostolico della via Appia , (Ib., 109) G. Mancini, Scavi sotto la basilica di S. Sebastiano. (Not. Scavi, 1923, 1) O. Marucchi, Note sulle memorie cristiane esplorate netto scavo di S. Sebastiano, (Ib., 80)
No full textPiganiol A. R. Lanciani, La memoria apostolorum al III miglio delV Appia e gli scavi di S. Sebastiano Dissertaz. della Pontif. Accad. di archeol., XIV, 1918 P. Styger, Monumento apostolico della via Appia , (Ib., 109) G. Mancini, Scavi sotto la basilica di S. Sebastiano. (Not. Scavi, 1923, 1) O. Marucchi, Note sulle memorie cristiane esplorate netto scavo di S. Sebastiano, (Ib., 80). In: Revue d'histoire et de philosophie religieuses, 4e année n°2, Mars-avril 1924. pp. 190-191
L’Immacolata di Sebastiano Conca per la Cappella Palatina della Reggia di Caserta
No full textThe article discusses the finding in the Parish Church of San Nicola la Strada (Caserta) of the altarpiece by Sebastiano Conca executed in 1756 for the Cappella Palatina the Reggia di Caserta. This fundamental work, which is the result of the Royal Bourbon Patronage, was considered lost for more than two Centuries
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
S. Roberti Bellarmini Liber de locis communibus continens Tractatum primum de R. Pontifice
No full textSYNTHESIS OF NON-IONIC RADIOGRAPHIC CONTRAST AGENTS BY MEANS OF REACTIVE EXTRUSION
No full textThe present invention relates to the industrial preparation of non-ionic X-ray contrast agents. In particular, it relates to a process for the synthesis of lopamidol using a reactive extrusion process in continuous which enable an efficient conversion of the relevant key intermediates, preferably in the absence of any solvent. The invention further relates to the preparation of radiographic X-rays contrast agents or key intermediates thereof by exploiting the technology of reactive extrusion
Effect of different hormonal treatments on milt production and sperm quality in precocious, 1-year-old male sea bass, Dicentrarchus labrax.
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