Search results for "informatica"
showing 10 items of 1003 documents
Vittorio Frosini
2010
Nella voce sono descritti il profilo scientifico e l'attività didattica di Vittorio Frosini (1922-2001), che si sviluppa lungo oltre un cinquantennio di carriera universitaria vissuta tenendo le Cattedre di Storia delle dottrine politiche, Filosofia del diritto, Sociologia giuridica e Teoria dell'interpretazione giuridica. Il suo percorso intellettuale si snoda tra gli studi dedicati al Risorgimento e alla trattazione in chiave filosofica e giuridica dei diritti umani, arrivando fino alla riflessione sul contemporaneo scenario della democrazia telematica nella società tecnologica.
Iconic framework for cooperative coding
2018
The description of an innovative framework built on top of Web-based visual programming environment is the primary aim of this contribution. In the last decade, many frameworks oriented to visual languages have been introduced in literature to improve the skill on programming languages, but at the best of our knowledge, no framework has been specially designed to support collaborative work on heterogeneous distributed environments. Therefore, SIRENE introduces a new framework in which beginners and experts can cooperate to develop algorithms by using a visual and iconic paradigm. Students, in the classroom or connected from everywhere, can be involved into the definition of the algorithm, c…
La regolazione della cybersecurity in Italia
2023
Il saggio offre una panoramica generale della regolazione e dell'organizzazione della sicurezza cibernetica in Italia. In particolare, dopo una premessa volta a dedicare alcuni cenni all'evoluzione della materia e alla disciplina europea, l'elaborato si sofferma sullo stato dell'arte e sulle future sfide in materia di cybersecurity.
Bridging the gap between the development of advanced biomedical signal processing tools and clinical practice
2015
In the last twenty years the eld of the biomedical signal processing has known an upsurge, as witnessed by the progressively increasing number of peer-review international journals and sessions in biomedical meetings.
An Automatic System for the Analysis and Classification of Human Atrial Fibrillation Patterns from Intracardiac Electrograms
2008
This paper presents an automatic system for the analysis and classification of atrial fibrillation (AF) patterns from bipolar intracardiac signals. The system is made up of: 1) a feature- extraction module that defines and extracts a set of measures potentially useful for characterizing AF types on the basis of their degree of organization; 2) a feature-selection module (based on the Jeffries-Matusita distance and a branch and bound search algorithm) identifying the best subset of features for discriminating different AF types; and 3) a support vector machine technique-based classification module that automatically discriminates the AF types according to the Wells' criteria. The automatic s…
PPG/ECG Multisite Combo System Based on SiPM Technology
2019
Two versions of a PPG/ECG combined system have been realized and tested. In a first version a multisite system has been equipped by integrating 3 PPG optodes and 3 ECG leads, whereas in another setup a portable version has been carried out. Both versions have been realized by equipping the optical probes with SiPM detectors. SiPM technology is expected to bring relevant advantages in PPG systems and overcome the limitations of physiological information extracted by state of the art PPG, such as poor sensitivity of detectors used for backscattered light detection and motion artifacts seriously affecting the measurements repeatability and pulse waveform stability. This contribution presents t…
Mutual Information Analysis of Brain-Heart Interactions in Epileptic Children
2021
In this work we apply the network physiology paradigm to retrieve information from central and autonomic nervous systems before focal epileptic seizure, represented respectively by electroencephalogram (EEG) signals and R-R intervals (RRI), and investigate on the presence and strength of brain-heart interactions by computing mutual information (MI) measures. Statistical significance of MI values was tested through surrogate time series generated with the random shuffle approach. Our results suggest that the proposed method for aligning signals representing brain and heart activity measured with different sampling rates, is capable of revealing coupling between RRI representing heart system,…
A Fuzzy Approach to the Role of Symmetry in Shape Formation: The Illusion of the Scalene Triangle
2009
The main purposes of this work are to demonstrate the role of directional symmetry as a second order principle that polarizes the perception of the shape and to show how this preference can be easily encoded in an algorithm using a fuzzy operator for symmetry detection. The role of grouping in influencing shape perception and the role of directional symmetry was demonstrated through small triangles that create a large triangle. The specific questions answered in the psychophysical experiments were the following: Can the grouping by similarity influence both the pointing and the shape of the small and the large isosceles triangles? Conversely, can the shape of the large triangle influence th…
Rilevazione della simmetria e preferenze cognitive - un Algoritmo basato su un Modello Fisico
2007
La rilevazione della simmetria è una di quelle attività che gli esseri umani compiono con estrema precisione ed apparentemente senza un grande sforzo computazionale - non a caso in visione umana la simmetria è una dei caratteristici elementi pop-out, mentre le simulazioni artificiali sembrano arrancare e confondersi ad ogni piccolo ostacolo. L’evoluzione ha dotato la nostra specie di meccanismi a basso livello per la rilevazione di oggetti che presentano forti simmetrie verticali, e lo ha fatto con ottime ragioni: nel periodo pre-civilizzato, riconoscere un volto, l’oggetto verticalmente simmetrico per antonomasia, era sinonimo di socialità quando esso era umano ed amico, e, se animale, rap…