112,708 research outputs found

    Poesie del Magnifico Lorenzo de'Medici, e di altri suoi amici e contemporanei. Divise in due parti.

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    Vol. 1 has special t.-p. only; v. 2 has half-title only.Edited by L. Nardini and B. S. Buonaiuti.--cf. Brit. Mus.Pt. 1. Poesie de Lorenzo de'Medici: Selve d'amore. Ecloghe. Canti. Sestine. Canzoni. Canzonette. Sonetti.--Pt. 2. Poesie di Angiolo Poliziano e dei fratelli Bernardo, Luca, e Luigi Pulci.Mode of access: Internet

    Numerical investigation of transient single phase forced convection of nanofluids in circular tubes

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    In this paper the development of the laminar forced convection flow of a water– Al2O3 nanofluid in a circular tube submitted to a constant and uniform heat flux at the wall is numerically investigated in a transient regime. A single and twophase model (discrete particles model) is employed with either constant or temperature-dependent properties. The investigation is accomplished for a particle size equal to 100 nm. The convective heat transfer coefficient for nanofluids is greater than that of the base liquid. Heat transfer enhancement increases with the particle volume concentration, but it is accompanied by increasing wall shear stress values

    Speeding-up document scoring with tree ensembles using CPU SIMD extensions

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    Scoring documents with learning-to-rank (LtR) models based on large ensembles of regression trees is currently deemed one of the best solutions to effectively rank query results to be returned by large scale Information Retrieval systems. This extended abstract shortly summarizes the work in [4] proposing V-QuickScorer (vQS), an algorithm which exploits SIMD vector extensions on modern CPUs to perform the traversal of the ensamble in parallel by evaluating multiple documents simultaneously. We summarize the results of a comprehensive evaluation of vQS against state-of-the-art scoring algorithms showing that vQS outperforms competitors with speed-ups up to a factor of 2.4x

    Analysis of technology diffusion policies for renewable energy. The case of the Italian solar photovoltaic sector

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    The scope of the work is to depict a solid framework to interpret the capacity development of solar PV in Italy. To this aim the pivotal roles of public incentives is addressed and a vis a vis analysis of the regulatory framework and corresponding quantitative data is provided. The Italian regulatory framework did not provide an adequate focus on operational requirements for developing solar PV and allowed the speculative behavior of many investors. This is demonstrated by the correlation index between installed capacity and level of incentive equal to 0.988. Additionally, LCOE is calculated and from 2009 onward it is half of the average incentive level. Furthermore, the role of “followers” assumed by large power generators in the first phase of the PV development determined the absence of an industrial leadership. Oppositely, in a second phase, large utilities became more active on the PV market since they realized the impact on power market price. The linear correlation index between market price and PV capacity is found to be equal to −0.68, therefore price decreases at the increase of PV installed capacity and this is detrimental for large power utilities, thus they were pushed to be active in the PV sector

    Peptides of the gastrointestinal tract of the dogfish (Scyliorhinus Stellaris)

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    Several endocrine-like peptides-containing cells of the dogfish gastro-intestinal tract are described
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