1,721,548 research outputs found
Il glossario TECT: uno strumento lessicale per la schedatura della pittura parietale
No full textl volume raccoglie i contributi della Giornata di studio tenutasi a Padova il 20 marzo 2014 dal titolo "La pittura frammentaria di età romana. Metodi di catalogazione e studio dei reperti", organizzata con l'obiettivo prioritario di presentare ad un pubblico di specialisti le prime fasi del progetto TECT, il cui nome deriva dall'abbreviazione del termine latino tectorium (intonaco), sviluppato al fine di creare una banca dati delle pitture parietali di età romana rinvenute in Italia settentrionale.
La "filosofia" del database TECT viene esplicitata nel volume, non solo tramite la presentazione della scheda, ideata nell'ambito del progetto con lo scopo di sistematizzare le evidenze archeologiche (A. Didonè, G. Salvo), ma anche attraverso la proposta di un glossario - pensato per uniformare la descrizione delle testimonianze pittoriche e per facilitarne la ricerca - le cui fasi di elaborazione vengono illustrate in questi atti (R. Helg, A. Malgieri)
Gianclaudio Malgieri, Vulnerability and Data Protection Law
No full textThe article reviews the latest work by Gianclaudio Malgieri, Vulnerability and Data Protection Law, 2023. In the book, Malgieri argues that personal variables of data subjects, which makes them vulnerable in the digital ecosphere, have (and, in prospective terms, could have more) relevance for data protection laws. As this article shows, there are several reasons why Malgieri’s volume is a must-read for all private lawyers interested in the impact of new technologies on people and the law
The surprising rolling spool: librational motion and failure of the pure rolling condition
No full textIn a previous work (Onorato P, Malgieri M, Mascheretti P and De Ambrosis A 2014 The surprising rolling spool: experiments and theory from mechanics to phase transitions Eur. J. Phys. 35 055011) an asymmetric rolling spool (ARS) was investigated as a simple model for a second-order phase transition. Here, we deepen the study of this system to address critical aspects related both to the characteristic of the oscillatory anharmonic motion and to the role of friction forces in determining it. The experimental data show that for largely asymmetric bodies the rolling condition is not reliably fulfilled because the intensity of the friction force goes below the needed value to ensure rolling
without slipping
Esperienze di formazione insegnante a seguito della revisione della seconda prova di maturità nei Licei Scientifici, 2015-2018 - Initiatives for teacher professional development following the revision of the final exam for Liceo Scientifico, 2015-2018
No full textWhy a Right to Legibility of Automated Decision-Making Exists in the General Data Protection Regulation
No full textModeling and Representing Conceptual Change in the Learning of Successive Theories: The Case of the Classical-Quantum Transition
No full textMost educational literature on conceptual change concerns the process by which introductory students acquire scientific knowledge. However, with modern developments in science and technology, the social significance of learning successive theories is steadily increasing, thus opening new areas of interest to discipline-based education research, e.g., quantum logic, quantum information, and communication. Here, we present an initial proposal for modeling the transition from the understanding of a theory to the understanding of its successor and explore its generative potential by applying it to a concrete case—the classical-quantum transition in physics. In pursue of such task, we make coordinated use of contributions from research not only on conceptual change in education, but also on the history and philosophy of science, on the teaching and learning of quantum mechanics, and on mathematics education. By means of analytical instruments developed for characterizing conceptual trajectories at different representational levels, we review empirical literature in the search for the connections between theory change and cognitive demands. The analysis shows a rich landscape of changes and new challenges that are absent in the traditionally considered cases of conceptual change. In order to fully disclose the educational potential of the analysis, we visualize categorical changes by means of dynamic frames, identifying recognizable patterns that answer to students’ need of comparability between the older and the new paradigm. Finally, we show how the frame representation can be used to suggest pattern-dependent strategies to promote the understanding of the new content, and may work as a guide to curricular design
Experiments and models about the force between permanent magnets: Asymptotic analysis of a difficult problem
No full textWe propose a simple experiment, which allows students to explore quantitatively the magnetic interaction between neodymium cylindrical magnets. The experiment employs a precision digital balance, two screws with known thread pitch and two transparent tubes to measure the repulsive force between two magnets as a function of their distance. Different measurements are performed, focusing on the behavior of the interaction force at short and long distances and the role of the magnets' aspect ratio. We discuss the comparison between theoretical expectations resulting from conceptually simple approximate models and experimental results. The experiments employ inexpensive materials and address a relevant topic in the physics curriculum. Thus, they are appropriate for the undergraduate physics laboratory, for advanced high school students, and in the context of teacher education and in-service training to enhance students' knowledge of magnetism
Trasmissione e trasferimento delle immagini nella decorazione parietale (I sec.a.C.-I sec.d.C.)
No full textThis research investigates the relationship between ancient figurative tradition and the production of wall painting decoration by focusing on the archaeological evidence from the Vesuvian area between the first century BCE and the first CE. Research has been carried out both analyzing how schemes and compositions circulated among painters and patrons, and reconstructing the design transfer techniques.
The first case study selected for the purpose, the “floating figures”, a kind of subsidiary subject widespread both in private and public buildings, has been examined carrying out an in-depth analysis of the technical characteristics of their execution. The paintings have been examined in situ and have been photographed both in raking light and using infrared reflectography in order to identify underlying preliminary traces pointing to the use of semi-mechanical means of reproduction. Raman microscopy was applied to pigments micro-sampled from paintings with traces of underdrawing and a lexicographic research on literary sources has been undertaken in order to identify a terminology possibly designing the artisans’ tools and working procedures. Moreover, in order to investigate the techniques and devices actuating the design process of the pictores, some paintings showing compositions largely similar and suggesting the presence of a common prototype, have been chosen as case studies. The first case study consists of a series of vignettes showing a Dionysian couple, either a youthful Dionysos or Hermaphroditus leaning on the shoulders of Silenos, who stands to the Dionysus’s right. By isolating the group components, it has been possible to identify that isolated figures rather than entire compositions were drawn from more than one established iconographical repertoire, then re-assembled by the pictor to re-create a new composition. A further case study related to the techniques and devices actuating the design process of the pictores consists of Pompeian vignettes depicting characters from theatrical performances. The scenes from the Vesuvian area, including both painted panels and mosaic emblemata, has been compared to other extant painted and mosaic scenes related to this subject coming from different areas and spanning several centuries. This evidence seems to form an overall coherent iconographic tradition which has led to explore the hypothesis of its connection with illustration of plays. Yet the study of the scenes has led to dismiss this hypothesis as the evidence rather points to the independence of this iconographic tradition from textual transmission suggesting instead an origin from Greek-Hellenistic iconographic models that had a long and wide circulation.
Bringing corroborative archaeological data to bear on the issues of the technical, practical aspects of painting, commissions and organization of work, this research has allowed to gain an insight into the working procedures of paintersLa ricerca indaga il rapporto tra cultura figurativa antica e decorazione pittorica focalizzando l’attenzione sulla produzione pittorica di area vesuviana tra il I sec.a. C. e il I sec.d.C., attraverso due linee di ricerca, una rivolta all’analisi delle modalità di formazione e trasmissione del repertorio, l’altra mirata ad individuare le tecniche impiegate per la trasposizione delle immagini a parete. Per il tema del trasferimento delle immagini a parete è stato isolato un soggetto caratterizzato al tempo stesso da ripetitività e variatio, le ” figure volanti”. L’indagine ha interessato un ampio campione documentario, analizzato attraverso l’esame autoptico integrato da una sistematica campagna fotografica, con riprese in luce radente e in infrarosso vicino. Completano l’indagine il campionamento dei pigmenti utilizzati per eseguire i disegni preparatori unitamente a una ricerca lessicografica finalizzata ad individuare nelle fonti antiche l’esistenza di termini tecnici che designavano gli strumenti di lavoro dei pictores.
Le modalità di trasmissione delle immagini sono state indagate attraverso l’analisi di due casi studio caratterizzati dalla ricorrenza elementi connotanti e ricorrenti. Il primo caso studio è costituito da una serie di raffigurazioni di ambito dionisiaco, quadretti che hanno come soggetto principale e ricorrente una coppia, Dioniso/Ermafrodito affiancato da Sileno musico e/o da altri personaggi del tiaso. Lo studio delle attestazioni, condotto destrutturando la composizione e analizzandone i singoli elementi, ha dimostrato che per crearla gli artigiani hanno assemblato elementi diversi desunti da un repertorio noto e consolidato.
Il secondo caso studio si compone di una serie di quadretti con scene teatrali, accomunati dalla presenza di un numero fisso di personaggi con maschera e costume. Il corpus delle immagini vesuviane di questo tipo, che si compone di attestazioni musive oltre che pittoriche, è stato messo a confronto con le attestazioni del tema provenienti da altre aree e distribuite in un arco cronologico molto ampio. Le relazioni iconografiche che legano le rappresentazioni di questo tema e la ricorrenza di scene da opere degli stessi autori a distanza di diversi secoli e in luoghi lontani tra loro ha indotto ad affrontare il problema della derivazione delle raffigurazioni da archetipi connessi all’illustrazione letteraria. Tuttavia lo studio delle immagini ha portato ad escludere tale ipotesi, suggerendone invece la derivazione da più prototipi di origine figurativa originati nel mondo greco-ellenistico e che hanno circolato a lungo e ampiamente.
L’analisi così condotta ha consentito di acquisire importanti informazioni sul modus operandi dei pictores, evidenziando procedure e soluzioni tecnich
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