113,522 research outputs found
L'idea di missione nella crisi della Chiesa di antico regime
No full textStefania Nanni, L'idea di missione nella crisi della Chiesa di antico regime, p. 555-580.
La Chiesa missionaria vive nel secondo Settecento una profonda crisi di uomini e di mezzi cui la Propaganda Fide risponde con una politica di basso profilo, incapace di arginare la caduta delle vocazioni, la debolezza etico-culturale del corpo dei missionari, l'offensiva dei lumi, le conseguenze della soppressione dei gesuiti, e di prefigurare una nuova strategia per l'evangelizzazione.
L'offensiva giacobina e gli esiti della Rivoluzione, con la soppressione degli istituti francesi impegnati oltremare (agosto 1792) e la chiusura della Congregazione De propaganda fide decisa dalla Repubblica Romana del 1798 attivano una serrata riflessione (sulla formazione dei quadri, sul clero indigeno e sull'autonomia finanziaria) che prefigura all'interno della
(v. retro) congregazione romana in esilio e tra i padri degli istituti soppressi (in particolare delle Missions Étrangères) le linee di sviluppo di una chiesa missionaria rinnovata. Saldandosi alla sensibilità per i popoli neri sperimentata dai missionari nelle colonie di antico regime ed «esplosa» con il decreto di abolizione della schiavitù varato dalla Convenzione (febbraio 1794), tale strategia concorre efficacemente ad individuare una nuova frontiera delle missioni e, nelle rinnovate relazioni tra Chiesa e Stati introdotte dal Concordato tra Napoleone e Pio VII, ad aprire la strada ai successi delle missioni ottocentesche.Nanni Stefania. L'idea di missione nella crisi della Chiesa di antico regime. In: Mélanges de l'École française de Rome. Italie et Méditerranée, tome 109, n°2. 1997. pp. 555-580
Satisficing game theory for distributed conflict resolution and traffic optimisation: A simulation tool and experimental results
No full textIn the current, centralized approach to Air Traffic Control (ATC) air traffic controllers are responsible for the safe and efficient flow of aircraft. This situation would change with the introduction of Airborne Self-Separation as a distributed and scalable approach to ATC. The major technological challenge that must be tackled to make Airborne Self-Separation a viable alternative to the traditional controller-based approach is to devise a safe and reliable technology to solve conflicts and improve global performances in an uncontrolled environment. In this paper we introduce an algorithm that applies Satisficing Game Theory (SGT) to solve conflicts in the framework of an overall optimisation of the traffic flow. This algorithm is inspired by the work presented in [1]. The paper presents the first results we collected by running a software tool which simulates the behavior of the SGT algorithm in a 3D environment, using air traffic samples provided by the Italian air traffic service provider (ENAV). These results are the starting point of a further enquiry to explore the actual impact of the introduction of such a technology in a realistic ATC environment
PEEK -TiO2 composites with enhanced UV resistance
No full textIn the paper, extruded filaments of polyetheretherketone (PEEK) filled (1%v, 3%v, 5%v) with sub-micrometric titanium dioxide (TiO2) particles have been manufactured with the aim to increase the UV radiation resistance of PEEK matrix. The TiO2 particles affect crystallinity of PEEK matrix as it increases increasing filler content. The filler presence slightly increases the stiffness and the elastic modulus of resulting composites and does not influence largely the tensile strength but show an influence on the elongation at break enhancing a finger like failure mechanism ascribed to microcracks propagation and interspherulitc fracture. UV aging test showed the effectiveness of TiO2 particles in reducing the photo-degradation effect especially in 5%v filled sample resulting the most effective formulation. For this formulation, after UV aging the mechanical properties and the failure mechanism remains unchanged while the neat PEEK sample shows embrittlement and loss of ductility
author-bios-SRD-19-0063.R1 – Supplemental material for The Network Structure of Police Misconduct
No full textSupplemental material, author-bios-SRD-19-0063.R1 for The Network Structure of Police Misconduct by George Wood, Daria Roithmayr and Andrew V. Papachristos in Socius</p
Chisciotte, la Reconquista, l’età di Lepanto
No full textDon Chisciotte letto rispetto alla centralità ottomana (nella vita di Cervantes e nel cattolicesimo mediterraneo nell'età di Filippo II e di Pio V
Statistics of the seasonal cycle of the 1951-2000 surface temperature records in Italy
No full text|We present an analysis of seasonal cycle of the last 50 years of records of surface temperature in Italy. We consider two data sets which synthesize the surface temperature fields of Northern and Southern Italy. Such data sets consist of
records of daily maximum and minimum temperature. We compute the best estimate of the seasonal cycle of the variables considered by adopting the cyclograms'
technique. We observe that in general the minimum temperature cycle lags behind the maximum temperature cycle, and that the cycles of the Southern Italy temper-
atures records lag behind the corresponding cycles referring to Northern Italy. All seasonal cycles lag considerably behind the solar cycle. The amplitude and phase of the seasonal cycles do not show any statistically signi ̄cant trend in the time interval considered
Reproducibility evaluation of classification by expert assessors of raw ham red skin defect.
No full textThe evaluation of qualitative characteristics of fresh pig thighs to be used for seasoning is made by expert assessors, which divide the examined raw hams in different quality classes basing on their visual aspect. This evaluation is subjected to various risks connected to the subjectivity and to the changeability of the human eye. Therefore, to estimate quantitatively the degree of objectivity of human evaluation of visual aspect, digital RGB images were acquired on a series of 198 raw ham samples and then (by means of a graphical user interface implemented ad hoc) subjected repeatedly in random order to the classification by a panel of six expert assessors in three quality categories related to the red skin defect. The results obtained from the panel have been analysed by proper statistical tools on the basis of two performance indicators of the assessors: Validity, i.e., the correctness of the response, and Reliability, i.e., the ability of the assessor to reproduce his own results. Moreover, also the percentage of assignations of each sample to the correct class was estimated. The results suggest that the proposed approach can be used both to monitor the reliability of the single assessors, and to identify samples whose class assignation is reasonably indubitable, e.g. to be used for the development of automated classification methods
Development of a transparent hydrorepellent modified SiO2 coatings for glazed sanitarywares
No full textThe formulation of innovative transparent hydrorepellent coatings is strongly motivated in order to satisfy the market request and necessity to improve the cleanability of the sanitarywares. A lot of attention is devoted to the use of cheap precursors, low temperature synthesis process and industrial scalability potentiality. In this framework, in the present paper the set-up of the deposition of modified SiO2 coatings on glazed ceramic supports by spraying technique was reported. Several solutions were formulated using as precursor tetraethylorthosilicate (TEOS) and co-precursor methyltriethoxysilane (MTES) in different molar ratios (i.e. 50:50, 25:75, 75:25), in suitable solvents and mixture of solvents (i.e. H2O, ethanol). The influence of the process parameters (i.e. precursors ratio, solvents, catalyser, annealing temperature) on the properties of the produced coatings was deeply investigated by means of scanning electron microscopy (SEM), simultaneous thermogravimetric and differential analyses (TG–DTA), infrared spectroscopy (FT-IR), X-Ray diffraction (XRD) and Vickers microhardness. Their hydrophobic behaviour was tested by the measurements of the static water contact angles and the chemical and stain resistance by the conformity to some tests of the standard UNI 4543. The obtained coatings were amorphous, homogeneous, uniform, thin (average thickness 300 nm), crack-free, leading to an improved hardness value of the glazed ceramic support (4.47 GPa vs 3.68 GPa for the coated and uncoated substrates, respectively), and allowed to improve both the hydrophobic behaviour and the chemical and stains resistance of the glazed sanitaryware supports, on the basis of the standard UNI 4543. The best hydrophobic performances were revealed in the case of coatings prepared starting from acidic catalysis derived precursor solutions. Moreover, the highest water contact angle values were detected for lower temperatures annealing, due to the methyl groups preservation, in agreement with the FT-IR and TG–DTA findings
Statistics of the seasonal cycle of the 1951-2000 surface temperature records in Italy and in the Mediterranean area
No full textWe present an analysis of the seasonal cycle of the last 50 years of records of surface temperature in Italy, as described by observations of maximum and minimum daily temperature, and of the surface and upper air temperature of the whole Mediterranean area, as described by the 1951-2000 NCEP reanalysis.
We compute the best estimate of the seasonal cycle of the variables considered by adopting the cyclograms’ technique. In the case of the Italian surface temperature, we observe that in general the minimum temperature cycle lags behind the maximum
temperature cycle, and that the cycles of the Southern Italy temperatures records lag behind the corresponding cycles referring to Northern Italy. In the case of the NCEP reanalysis data for the whole Mediterranean area, we observe that at surface the phase and amplitude of the seasonal cycle are strongly characterized by the signature of the underlying surface, while in the upper air large-scale features related to ocean-continent contrast come into play. All seasonal cycles lag considerably behind the solarcycle. In all cases considered, the amplitude and phase of the seasonal cycles do not show any statistically significant trend in the time interval considered. This works supports the idea that climate change studies are much more reliable when upper air data are taken into account
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