182,175 research outputs found
La vita di parrocchia
No full textVolume curato da Piergiorgio Mori, con interventi di G. Aliberti, P. Mori, A. D'Angelo, M. Serri, L. Giansanti, E. Zocaro, R. Caputo, A. Denti, F. Matass
ALIM (Archivio della Latinità Medievale dItalia). Storia, attualità, prospettive di una banca-dati di testi mediolatini
No full textNella prima parte dell'articolo (paragrafi 1-3), Edoardo D'Angelo ha scritto sulla storia e gli obiettivi di ALIM. La seconda parte dell'articolo (paragrafi 4-10), scritta da Paolo Monella, discute gli aspetti informatico-umanistici della transizione del progetto ALIM da una codifica procedurale (HTML) e proprietaria dei testi e dei loro metadati a standard descrittivi (TEI XML) e open source, e propone in chiusura una riflessione sui modelli di collaborazione tra umanisti, umanisti informatici e informatici all'interno del progetto.In the first part of this article (paragraphs 1-3), Edoardo D'Angelo wrote about the history and goals of ALIM. In the second part (paragraphs 4-10), Paolo Monella wrote a reflection on the digital humanities aspects of the transition of the ALIM project from HTML to TEI XML (both for the texts and the metadata of the archive); he also discusses issues raised by collaboration between humanites, digital humanists and IT specialists in the ALIM project
Celso Furtado y la economia de Venezuela: subdesarrollo con abundancia de divisas
No full textThe two essays of Celso Furtado on the Venezuelan economy represent a deep analysis of the economic reality of the Caribbean country; of the nature of its underdevelopment, dependent above all from the oil exploitation by the multinational societies; of the contradiction among underdevelopment and abundance of currencies, that favours the growth of the parasitical income; of the public spending and the difference between salaries and labour productivity; of the tools that he proposes to allow the development of the country.Celso Furtado escribe dos ensayos sobre la economía de Venezuela que representan un análisis pormenorizado de la realidad económica del país caribeño; de la naturaleza de su subdesarrollo, que depende sobre todo de la explotación petrolera por parte de las compañías multinacionales; de la contradicción entre subdesarrollo y abundancia de divisa, que favorece el crecimiento de la renta parasitaria, del gasto público y de la diferencia entre salarios y productividad del trabajo; de los instrumentos que propone para permitir el desarrollo del paí
Screening by coral green fluorescent protein (GFP)-like chromoproteins supports a role in photoprotection of zooxanthellae
No full textGreen fluorescent protein (GFP)-like pigments are responsible for the vivid colouration of many reef-building corals and have been proposed to act as photoprotectants. Their role remains controversial because the functional mechanism has not been elucidated. We provide direct evidence to support a photoprotective role of the non-fluorescent chromoproteins (CPs) that form a biochemically and photophysically distinct group of GFP-like proteins. Based on observations of Acropora nobilis from the Great Barrier Reef, we explored the photoprotective role of CPs by analysing five coral species under controlled conditions. In vitro and in hospite analyses of chlorophyll excitation demonstrate that screening by CPs leads to a reduction in chlorophyll excitation corresponding to the spectral properties of the specific CPs present in the coral tissues. Between 562 and 586 nm, the CPs maximal absorption range, there was an up to 50 % reduction of chlorophyll excitation. The screening was consistent for established and regenerating tissue and amongst symbiont clades A, C and D. Moreover, among two differently pigmented morphs of Acropora valida grown under identical light conditions and hosting subclade type C3 symbionts, high CP expression correlated with reduced photodamage under acute light stress
Fast convergence of learning requires plasticity between inferior olive and deep cerebellar nuclei in a manipulation task: a closed-loop robotic simulation
No full textThe cerebellum is known to play a critical role in learning relevant patterns of activity for adaptive motor control, but the underlying network mechanisms are only partly understood. The classical long-term synaptic plasticity between parallel fibers (PFs) and Purkinje cells (PCs), which is driven by the inferior olive (IO), can only account for limited aspects of learning. Recently, the role of additional forms of plasticity in the granular layer, molecular layer and deep cerebellar nuclei (DCN) has been considered. In particular, learning at DCN synapses allows for generalization, but convergence to a stable state requires hundreds of repetitions. In this paper we have explored the putative role of the IO-DCN connection by endowing it with adaptable weights and exploring its implications in a closed-loop robotic manipulation task. Our results show that IO-DCN plasticity accelerates convergence of learning by up to two orders of magnitude without conflicting with the generalization properties conferred by DCN plasticity. Thus, this model suggests that multiple distributed learning mechanisms provide a key for explaining the complex properties of procedural learning and open up new experimental questions for synaptic plasticity in the cerebellar network.This work was supported by grants from the European Union, Egidio D'Angelo and Eduardo Ros (CEREBNET FP7-ITN238686, REALNET FP7-ICT270434) and by grants from the Italian Ministry of Health to Egidio D'Angelo (RF-2009-1475845) and the Spanish Regional Government, Niceto R. Luque (PYR-2014-16). We thank G. Ferrari and M. Rossin for their technical support
Prólogo
No full textPrólogo a los dos tomos dedicados o a la actividad académica del Prof. Antonio Scocozza. Para trazar la fisonomía de Antonio Scocozza cabría partir precisamente de su vivir en vilo en las olas del Océano, dividido entre su ser italiano y la elección de amar a América Latina no solo como objeto de sus estudios e investigaciones, sino también como parte integrante de su propia existencia, elemento constituyente de una formación intelectual que, desde siempre, lo ha inducido a considerar la historia política, cultural e intelectual de Suramérica como parte de su propia historia, personal y social. A punto de alcanzar sus primeros setenta años, los amigos, los colegas y los discípulos de las dos orillas del Atlántico quieren celebrar esta vida errante de “napolitano incorregible” –como lo definió en su momento el Gabo– ofreciéndole el resultado de sus propias investigaciones. Muchos trabajos nacidos en diferentes sectores científicos, que reúnen numerosos argumentos y un calidoscopio de temas que se unen en los colores, en los sonidos, en las palabras de América latina, de México a Patagonia
stopp: An R Package for Spatio-Temporal Point Pattern Analysis
No full textstopp is a novel R package specifically designed for the analysis of spatio-temporal point patterns which might have occurred in a subset of the Euclidean space or on some specific linear network, such as roads of a city. It represents the first package providing a comprehensive modelling framework for spatio-temporal Poisson point processes. While many specialized models exist in the scientific literature for analyzing complex spatio-temporal point patterns, we address the lack of general software for comparing simpler alternative models and their goodness of fit. The package’s main functionalities include modelling and diagnostics, together with exploratory analysis tools and the simulation of point processes. A particular focus is given to local first-order and second-order characteristics. The package aggregates existing methods within one coherent framework, including those we proposed in recent papers, and it aims to welcome many further proposals and extensions from the R community
Collaboration with whom? SMEs at a Crossroad between R&D partnership exploration and exploitation
No full textPurpose of the paper: Collaboration with external partners is essential for small- and medium-sized enterprises (SMEs) that want to innovate. The purpose of this paper is to examine the impact of three different types of R&D collaborations, namely with universities, research centres and other companies, on SMEs’ product innovation and innovation performance.
Methodology: Hypotheses are tested using a Probit/Tobit regression on an Italian sample of manufacturing SMEs.
Findings: Our analysis shows that collaborating with universities has a positive impact on product innovation, but not on innovation performance. Whereas, collaboration with research centres and other companies has a positive impact on both product innovation and innovation performance.
Research limits: Our results refer to a specific area, Italy, and to a specific period, so that the usual problem of generalisability across time and space arises. Moreover, we focussed on R&D partners considering only three groups, universities, research centres and other companies. For the latter, data at our disposal allowed us to differentiate neither between rival/not rival companies nor on the basis of their industry, size or geographic location.
Practical implications: Our findings provide implications for SMEs managers and entrepreneurs who have to decide between R&D partners for their explorative vs exploitative outside-in innovation strategy. Our findings reveal the need to align different R&D partners with different expectations and final outcomes.
Originality of the paper: Previous studies shed minimal light on open innovation practices in the SMEs context. Just a few looked at the effect of different R&D partners on product or process innovation and innovation performance (this latter often measured with product or patent number) but separately. We looked at the effects of different R&D collaborations on both product innovation as well as the monetization side of the SMEs innovation process
Carmen de figuris vel schematibus. Introduzione, testo critico e commento a cura di R. M. d'Angelo. (Bibliotheca Weidmanniana, ISSN : 0940.2136. 5), 2001
No full textDeschamps Lucienne. Carmen de figuris vel schematibus. Introduzione, testo critico e commento a cura di R. M. d'Angelo. (Bibliotheca Weidmanniana, ISSN : 0940.2136. 5), 2001. In: Revue des Études Anciennes. Tome 104, 2002, n°1-2. pp. 263-264
Vie aeree superiori
No full textVengono affrontate l'anatomia, la fisiologia e tutte le patologie benigne e maligne che interessano le vie aeree superior
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