Search results for "FLE"
showing 10 items of 3517 documents
UNOS COBRES FLAMENCOS DEL SIGLO XVII EN TALCA (CHILE)
2017
espanolEn este estudio presentamos cuatro pinturas sobre cobre de ascendencia flamenca, una de ellas firmada por Willem van Herp (1614-1677), a quien tambien atribuimos las restantes. Obras tal vez de la segunda mitad del siglo XVII e inspiradas en Rubens y Teniers el Viejo que, en su mayoria, pertenecieron a Eusebio Lillo y hoy se custodian en el Museo O'Higginiano y de Bellas Artes de Talca (Chile). EnglishIn this study we present four oil on copper paintings of Flemish descent, one by Wil lem van Herp (1614-1677), whom we also attribute the remaining ones. His works may date back to the second half of the 17th century and are inspired by Rubens and Teniers the Elder: Most of them belonge…
Direct numerical simulations of creeping to early turbulent flow in unbaffled and baffled stirred tanks
2018
Abstract It has been known for a long time that the fluid flow and several global quantities, such as the power and pumping numbers, are about the same in baffled and unbaffled mechanically stirred vessels at low Reynolds numbers, but bifurcate at some intermediate Re and take drastically different values in fully turbulent flow. However, several details are not yet completely understood, notably concerning the relation of this bifurcation with the flow features and the transition to turbulence. In order to shed light on these issues, computational fluid dynamics was employed to predict the flow field in two vessels stirred by a six-bladed Rushton turbine at Reynolds numbers from 0.2 to 600…
Transmediating argumentation : Students composing across written essays and digital videos in higher education
2016
This comparative study examined how university students built an argument in written essays and multimodal digital videos, and how their argumentation transmediated across these two mediums. Data analysis involved 1) analysis of content in both written essays and digital videos; 2) the development of transmediation visualizations to elucidate how ideas were transformed from essays into videos; and 3) multimodal analysis to understand the communicative affordances and constrains for argumentation with each medium. The findings revealed that the most common type of content in both essays and videos was supportive argumentation; however, the videos did not include any counter-argumentation. St…
Extending the spectral decomposition of Granger causality to include instantaneous influences: application to the control mechanisms of heart rate va…
2021
Assessing Granger causality (GC) intended as the influence, in terms of reduction of variance of surprise, that a driver variable exerts on a given target, requires a suitable treatment of ‘instantaneous’ effects, i.e. influences due to interactions whose time scale is much faster than the time resolution of the measurements, due to unobserved confounders or insufficient sampling rate that cannot be increased because the mechanism of generation of the variable is inherently slow (e.g. the heartbeat). We exploit a recently proposed framework for the estimation of causal influences in the spectral domain and include instantaneous interactions in the modelling, thus obtaining (i) a novel index…
Logistic Growth Described by Birth-Death and Diffusion Processes
2019
We consider the logistic growth model and analyze its relevant properties, such as the limits, the monotony, the concavity, the inflection point, the maximum specific growth rate, the lag time, and the threshold crossing time problem. We also perform a comparison with other growth models, such as the Gompertz, Korf, and modified Korf models. Moreover, we focus on some stochastic counterparts of the logistic model. First, we study a time-inhomogeneous linear birth-death process whose conditional mean satisfies an equation of the same form of the logistic one. We also find a sufficient and necessary condition in order to have a logistic mean even in the presence of an absorbing endpoint. Then…
Crescere in IPM. Il trattamento dei giovani adulti autori di reato
2017
Il trattamento dei giovani adulti all’interno delle strutture penitenziarie minorili, in seguito all’emanazione del D.L. 92/14 convertito in legge nel mese di agosto dello stesso anno, impone una riflessione e un’analisi sulle opportune modalita trattamentali non solo per i soggetti minorenni ma anche per giovani adulti tra i 18 e i 25 anni. Confrontarsi, infatti, con l’esigenza di rispondere in modo adeguato ai bisogni di una nuova tipologia di utenza e il principale compito dell’educatore penitenziario che necessita di programmi di formazione per acquisire competenze specifiche e costruire idonei percorsi trattamentali. Questi, se dotati di senso e rispondenti alle necessita di crescita d…
On the moving multi-loads problem in discontinuous beam structures with interlayer slip
2017
Abstract This contribution proposes an efficient approach to the moving multi-loads problem on two-layer beams with interlayer slip and elastic translational supports. The Euler-Bernoulli hypothesis is assumed to hold for each layer separately, and a linear constitutive relation between the horizontal slip and the interlaminar shear force is considered. It is shown that, using the theory of generalized functions to treat the discontinuous response variables, exact eigenfunctions can be derived from a characteristic equation built as determinant of a 6 x 6 matrix. Building pertinent orthogonality conditions for the deflection eigenfunctions, a closed-form analytical response is established i…
L’apprendimento generativo e il reflective learningnella didattica universitaria: una ricerca con studenti universitari
2020
The present paper describes the results of a research carried out with 205 students attending the 2nd year of the degree course in Primary Education from the University of Palermo in A.Y. 2018-2019. Generative and reflective learning are the framework of the research, central in the teaching-learning process for the construction of professional, competent and responsible teachers. The research path wanted to verify the validity of the McDrury and Alterio Storytelling model (2003) in order to increase students reflective, narrative and critical competence, to promote generative learning and make students aware of their talents.
Hydrothermal fluid venting in the offshore sector of Campi Flegrei caldera: A geochemical, geophysical, and volcanological study
2016
The ongoing unrest at the Campi Flegrei caldera (CFc) in southern Italy is prompting exploration of its poorly studied offshore sector. We report on a multidisciplinary investigation of the Secca delle Fumose (SdF), a submarine relief known since antiquity as the largest degassing structure of the offshore sector of CFc. We combined high-resolution morphobathymetric and seismostratigraphic data with onshore geological information to propose that the present-day SdF morphology and structure developed during the initial stages of the last CFc eruption at Monte Nuovo in AD 1538. We suggest that the SdF relief stands on the eastern uplifted border of a N-S-trending graben-like structure formed …
Sustainable Infrastructure Projects: Systemic versus Traditional Delivery Models
2021
Sustainability involves multiple environmental, technical, social and economic factors, and such complex analysis requires systemic solutions. Delivery models are key to achieving system benefits and enhancing sustainable development in infrastructure investments. They define the phases of a project, incentive structures, risk sharing and the relationships among the actors in it. They are usually developed early in the project and determine the project dynamics and outcomes. We compared traditional delivery models with systemic ones. We identified and illustrated elements that differ between them through two cases. The contribution is an increased understanding of how systemic infrastructur…