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493 results on '"Università degli Studi di Trento"'

3. Vitiligo and Psychodrama Therapy

Author

Università degli Studi di Brescia, Scuola Psicoterapia Psicodrammatica Brescia, Università degli Studi di Trento, and Gabriella Pravata, Medical Doctor, Dermatologist

Published
2024

11. Simple, Safe, Same: Lung Ultrasound for COVID-19 (LUSCOVID19)

Author

Valle del Serchio General Hospital, Lucca, Italy, Università degli Studi di Trento, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy, Bresciamed, Brescia, Italy, 118 USL Nordovest Toscana, Lucca, Italy, General Hospital, Voghera, Italy, Lodi General Hospital, Lodi, Italy, and Riccardo Inchingolo, Principal Investigator

Published
2022

13. Calcium cytotoxicity sensitizes prostate cancer cells to standard-of-care treatments for locally advanced tumors

Author

Giovanni Armenise Harvard Foundation, Università degli Studi di Trento, Lega Italiana per la Lotta contro i Tumori, Fondazione Umberto Veronesi, EMBO, European Commission, Alaimo, Alessandro [0000-0002-5888-6268], Cambuli, Francesco [0000-0002-8237-7121], Petris, Gianluca [0000-0002-2420-6359], Kruithof-de Julio, Marianna [0000-0002-6085-7706], Romanel, Alessandro [0000-0003-4855-8620], Alaimo, Alessandro, Lorenzoni, Marco, Ambrosino, Paolo, Bertossi, Arianna, Bisio, Alessandra, Macchia, Alice, Zoni, Eugenio, Genovesi, Sacha, Cambuli, Francesco, Foletto, Veronica, De Felice, Dario, Soldovieri, Maria Virginia, Mosca, Ilaria, Gandolfi, Francesco, Brunelli, Matteo, Petris, Gianluca, Cereseto, Anna, Villarroel, Álvaro, Thalmann, George, Carbone, Francesco Giuseppe, Kruithof-de Julio, Marianna, Barbareschi, Mattia, Romanel, Alessandro, Taglialatela, Maurizio, Lunardi, Andrea, Giovanni Armenise Harvard Foundation, Università degli Studi di Trento, Lega Italiana per la Lotta contro i Tumori, Fondazione Umberto Veronesi, EMBO, European Commission, Alaimo, Alessandro [0000-0002-5888-6268], Cambuli, Francesco [0000-0002-8237-7121], Petris, Gianluca [0000-0002-2420-6359], Kruithof-de Julio, Marianna [0000-0002-6085-7706], Romanel, Alessandro [0000-0003-4855-8620], Alaimo, Alessandro, Lorenzoni, Marco, Ambrosino, Paolo, Bertossi, Arianna, Bisio, Alessandra, Macchia, Alice, Zoni, Eugenio, Genovesi, Sacha, Cambuli, Francesco, Foletto, Veronica, De Felice, Dario, Soldovieri, Maria Virginia, Mosca, Ilaria, Gandolfi, Francesco, Brunelli, Matteo, Petris, Gianluca, Cereseto, Anna, Villarroel, Álvaro, Thalmann, George, Carbone, Francesco Giuseppe, Kruithof-de Julio, Marianna, Barbareschi, Mattia, Romanel, Alessandro, Taglialatela, Maurizio, and Lunardi, Andrea

Abstract

Therapy resistance is a major roadblock in oncology. Exacerbation of molecular dysfunctions typical of cancer cells have proven effective in twisting oncogenic mechanisms to lethal conditions, thus offering new therapeutic avenues for cancer treatment. Here, we demonstrate that selective agonists of Transient Receptor Potential cation channel subfamily M member 8 (TRPM8), a cation channel characteristic of the prostate epithelium frequently overexpressed in advanced stage III/IV prostate cancers (PCa), sensitize therapy refractory models of PCa to radio, chemo or hormonal treatment. Overall, our study demonstrates that pharmacological-induced Ca2+ cytotoxicity is an actionable strategy to sensitize cancer cells to standard therapies.

Published
2020

14. A genetic algorithm for the mixed flow shop problem

Author

Universitat Politècnica de Catalunya. Departament d'Organització d'Empreses, Università degli studi di Trento, Van Wunnik, Lucas Philippe, Pascual Poch, Mario, Universitat Politècnica de Catalunya. Departament d'Organització d'Empreses, Università degli studi di Trento, Van Wunnik, Lucas Philippe, and Pascual Poch, Mario

Abstract

In this thesis we present a new interesting version of the mixed flow shop se-quencing problem, which at the same time is a version of the classic flow shop,a very common topic on operations research.We propose a genetic algorithm to solve it that we will compare at the endwith a simple initial genetic-based algorithm previously design. For that wefirst focus on the crossover operator as we consider it the most challenging parton a sequencing problem. We study and compare 5 different crossover operatorsand we choose the one that performs better. Finally we calibrate the populationsize, the weight of mutation and crossover operators on the algorithm and alsothe mutations operator itself.The goal of the thesis is to better understand the specific mixed flow shopproblem version presented and design a genetic algorithm that clearly improvesthe performance of the initial algorithm

Published
2019

16. One dimensional quantum gases: from few to many

Author

Universitat Politècnica de Catalunya. Departament de Física, Università degli studi di Trento, Boronat Medico, Jordi, Giorgini, Stefano, Amorós Binefa, Júlia, Universitat Politècnica de Catalunya. Departament de Física, Università degli studi di Trento, Boronat Medico, Jordi, Giorgini, Stefano, and Amorós Binefa, Júlia

Abstract

Following a recent experimental study [Wenz et al. Science 342, 457 (2013)] on the achievement of the thermodynamic limit in a system of one-dimensional (1D) fermions, the project aims to investigate theoretically a similar problem for 1D Bose gases. By considering a system of bosons confined in a 1D harmonic trap and interacting with a single impurity, the plan is to calculate the binding energy of the impurity as the number of bosons in the bath is increased. The analysis will be performed by varying both the coupling strength of the bath and the interspecies interactio, The main objective of this project is to find the binding energy of an impurity interacting with a one-dimensional bosonic system of increasing size for different coupling strengths g. Both the bosons as well as the impurity interact in pairs by means of a contact potential. The coupling strength between the bosons and between the impurity and the bosons is assumed to be the same. The bosonic bath is placed in an harmonic trap to mimic a very likely experimental situation. The methods used will be based on variational and diffusion Monte-Carlo simulations which allow for an exact treatment of the problem. Apart from this numerical calculation, a theoretical study combining Lieb-Liniger theory and local density approximation will be performed in order to determine the binding energy between the impurity and the bosonic bath in the thermodynamic limit. Comparing this theoretical prediction with the DMC results, we can determine when the system has reached a sufficiently large size in order to be properly described by the thermodynamic limit., El principal objetivo de este proyecto es encontrar la energía de unión de una impureza interaccionando con un sistema bosónico unidimensional para distintos valores de la constante de acoplamiento g y tamaños de baño creciente. Tanto los bosones como la impureza interaccionan en pares a través de un potencial de contacto. La fuerza de acoplamiento entre los bosones y entre los bosones y la impureza se ha considerado igual. El baño de bosones se ha colocado en una trampa armónica unidimensional para imitar una situación experimental altamente probable. Los métodos utilizados se han basado en simulaciones variacionales y de difusión Monte Carlo que permiten un tratamiento exacto del problema. A parte de este cálculo numérico, también se realiza un estudio teórico combinando la teoría de Lieb-Liniger y la aproximación de densidad local para determinar la interacción entre la impureza y el baño de bosones en el límite termodinámico. Comparando esta predicción teórica con los resultados DMC, podemos determinar cuando el sistema ha alcanzado un tamaño lo suficientemente grande para ser descrito por teoría termodinámica., El principal objectiu d'aquest projecte és trobar l'energia d'unió entre una impuresa que interacciona amb un bany de bosons per un nombre de bosons creixent i vàries forces d'interacció g diferents. Tant els bosons com la impuresa interaccionen de dos en dos a través d'un potencial de contacte. La força d'acoblament entre bosons i entre bosons i impuresa s'ha considerat igual. El bany de bosons s'ha col·locat en una trampa harmònica unidimensional per tal d'imitar una situació experimental altament probable. Els mètodes utilitzats s'han basat en simulacions variacionals i de difusió Monte Carlo que permeten un tractament exacte del problema. A part d'aquest càlcul numèric, també s'han realitzat estudis teòrics combinant la teoria de Lieb-Liniger i l'aproximació de densitat local per tal de determinar la interacció entre la impuresa i el bany de bosons en el límit termodinàmic. Comparant aquesta predicció teòrica amb els resultats DMC, podem determinar quan el sistema ha assolit una mida suficient per a ser descrit mitjançant teoria termodinàmica.

Published
2016

17. Design of a column decoder for a binary vision sensor implementing run length encoding

Author

Università degli studi di Trento, Brunelli, Davide, Gimenéz Umbert, Bruno, Università degli studi di Trento, Brunelli, Davide, and Gimenéz Umbert, Bruno

Abstract

This work describes the architecture of an asynchronous column decoder for a CMOS binary vision sensor. The decoder compresses and code data, at row-level, before delivering off-chip. The operation is completely asynchronous featuring 160 MB/s data rate., Outgoing

Published
2014

18. La costruzione discorsiva dell'identità europea: Un'analisi comparativa del dibattito publico sull'ingresso della Turchia nell'UE in Germania e in Italia

Author

Scartezzini, Riccardo, Rehberg, Karl-Siegbert, Università degli Studi di Trento, Technische Universität Dresden, Ulbrich, Katharina, Scartezzini, Riccardo, Rehberg, Karl-Siegbert, Università degli Studi di Trento, Technische Universität Dresden, and Ulbrich, Katharina

Abstract

L'obbiettivo della tesi è la ricostruzione del discorso sull'identità europea. Inizialmente vengono rintracciate varie correnti di questo discorso su diversi livelli discorsivi (politico, scientifico e mass mediale). L'analisi empirica si rivolge poi sul dibattito sull'ingresso della Turchia nell'Unione Europea svoltasi nei mass media tedeschi ed italiani. A questo scopo vengono analizzati articoli di respettivamente tre grandi quotidiani per ogni area discorsiva (Germania ed Italia) che trattano la questione dell'ingresso della Turchia nell'UE. Il quadro metodologico si rifa alla analisi del discorso foucaultiano.:1 INTRODUZIONE 3 2 DEFINIZIONE E DELIMITAZIONE DELL’OGGETTO DI RICERCA 8 2.1 Il discorso sull’identità europea – un tentativo di ricostruzione 8 2.1.1 Identità – un concetto chiave della ricerca sociale contemporanea 8 2.1.2 Il discorso politico sull’identità europea a livello comunitario 12 2.1.3 Il discorso accademico sull’identità europea 20 2.1.4 Il discorso pubblico sull’identità europea 30 2.2 Il dibattito sull’ingresso della Turchia nell’Unione Europea 33 2.2.1 La Turchia e l’Unione Europea – una breve sintesi storica 33 2.2.2 Il dibattito sull’ingresso della Turchia nell’Unione Europea 36 2.2.3 Il dibattito in Italia 38 2.2.4 Il dibattito in Germania 40 3 I FONDAMENTI TEORICI E METODOLOGICI 43 3.1 L’analisi del discorso come programma di ricerca 43 3.1.1 La teoria del discorso di Foucault 45 3.1.2 Approcci discorsivi nell’ambito degli Studi Europei 49 3.1.3 L’analisi del discorso nella sociologia della conoscenza di Keller 55 3.2 Identità Europea come oggetto di un’analisi del discorso: la realizzazione pratica della ricerca 62 4 ANALISI DEL MATERIALE EMPIRICO 67 4.1 Supposizioni a priori del dibattito 68 4.1.1 La classificazione basale: Europa – Turchia 68 4.1.2 La classificazione basale: Eurocrati – Cittadini europei 78 4.1.3 La definizione della situazione: lo scontro delle civiltà 82 4.2 Correnti discorsive 89 4.2.1 La corrente tradizionalisti, Gegenstand der Diplomarbeit ist die Rekonstruktion des Diskurses zur europäischen Identität untersucht am Beispiel der Türkeibeitrittsdebatte in Deutschland und in Italien. Dazu wurden Beiträge aus jeweils drei überregionalen Tageszeitungen im Zeitraum 2005 einer wissenssoziologischen Diskursanalyse unterzogen.:1 INTRODUZIONE 3 2 DEFINIZIONE E DELIMITAZIONE DELL’OGGETTO DI RICERCA 8 2.1 Il discorso sull’identità europea – un tentativo di ricostruzione 8 2.1.1 Identità – un concetto chiave della ricerca sociale contemporanea 8 2.1.2 Il discorso politico sull’identità europea a livello comunitario 12 2.1.3 Il discorso accademico sull’identità europea 20 2.1.4 Il discorso pubblico sull’identità europea 30 2.2 Il dibattito sull’ingresso della Turchia nell’Unione Europea 33 2.2.1 La Turchia e l’Unione Europea – una breve sintesi storica 33 2.2.2 Il dibattito sull’ingresso della Turchia nell’Unione Europea 36 2.2.3 Il dibattito in Italia 38 2.2.4 Il dibattito in Germania 40 3 I FONDAMENTI TEORICI E METODOLOGICI 43 3.1 L’analisi del discorso come programma di ricerca 43 3.1.1 La teoria del discorso di Foucault 45 3.1.2 Approcci discorsivi nell’ambito degli Studi Europei 49 3.1.3 L’analisi del discorso nella sociologia della conoscenza di Keller 55 3.2 Identità Europea come oggetto di un’analisi del discorso: la realizzazione pratica della ricerca 62 4 ANALISI DEL MATERIALE EMPIRICO 67 4.1 Supposizioni a priori del dibattito 68 4.1.1 La classificazione basale: Europa – Turchia 68 4.1.2 La classificazione basale: Eurocrati – Cittadini europei 78 4.1.3 La definizione della situazione: lo scontro delle civiltà 82 4.2 Correnti discorsive 89 4.2.1 La corrente tradizionalistica 90 4.2.2 La corrente modernistica 93 4.3 Concetti d’Europa 96 4.3.1 L’Europa come continente 96 4.3.2 L’Europa come erede dell’Occidente cristiano 98 4.3.3 L’Europa: arte e cultura 101 4.3.4 L’Europa come comunità di valori 102 4.3.5 L’Europa: progresso tecnico e benessere economico 108 4.3.6 L’Europa come

Published
2013

19. Efficienza energetica e fonti rinnovabili in Italia. II caso di estudio della sede di Trentino Trasporti

Author

Università degli studi di Trento, Fauri, Maurizio, Roig Franquesa, Pere, Università degli studi di Trento, Fauri, Maurizio, and Roig Franquesa, Pere

Abstract

Il contenuto della tesi riguarda gli aspetti delle fonti rinnovabili e dell' efficienza energetica degli edifici per Italia in generale e per la regione del Trentino Alto Adige in particolare. Inizialmente viene riassunta la situazione della produzione di energia da fonte rinnovabile, facendo un confronto tra la situazione dell Italia e quella Spagna, che ha delle capacità e delle risorse energetiche rinnovabili simili a quelle dell Italia. La parte fondamentale della tesi ha riguardato l'analisi dell' efficienza energetica degli imianti e dell' edificio, sede della società di transporti pubblici Trentino Trasporti, L'edificio è sitio in via Innsbruck 65 nella città di Trento ed +e dotato di un impianto fotovoltaico della potenza nominale di 1600 kWp, realizzato sulla copertura del parcheggio dei pullman. L'analisi energetica ha preso in esame i consumi elettrici e termici degli impianti dell' edificio: Sono stati calcolati gli indici di consumo energetico specifico rferiti alla superficie dell' edificio e sono state calcolate le emissioni complessive di CO2. Infine sono state elaborate alcune ipotesi di intervento per migliorare le condizioni di efficienza e ridurre i consumi energetici., Outgoing

Published
2011

20. The Politics of Monstrosity: Hans de Winiwarter and intersexuality in Early Twentieth Century

Author

Gendered Ways of Knowing ?Gender, Natural Sciences and Humanities (Università degli Studi di Trento et la Fondation Bruno Kessler), De Ganck, Julie, Gendered Ways of Knowing ?Gender, Natural Sciences and Humanities (Università degli Studi di Trento et la Fondation Bruno Kessler), and De Ganck, Julie

Abstract

info:eu-repo/semantics/nonPublished

Published
2010

21. Disegno e sviluppo di una libreria per biblioteca

Author

Università degli studi di Trento, Rossi, Stefano, Rabassó Castellví, Jordi, Università degli studi di Trento, Rossi, Stefano, and Rabassó Castellví, Jordi

Abstract

Il presente documento ha come obiettivo lo studio, il disegno e lo sviluppo di uno scaffale per una biblioteca. Cominciando da i prodotti che attualmente esistono e combinandoli con nuovi disegni, idee e tecnologie, si è arrivato a l’elaborazione di un prodotte efficace, attrattivo e innovatore. Per il suo corretto svoluppo si sono elaborati tutti i tipi di studi e analisi usando i metodi più funzionali e pratici che si conoscono. Così si sono analizzati i tipi di utenti che intervengono e interagiscono con il prodotto, lo stato della tencica e di mercato attuale e anche le funzioni che danno al prodotto e infine i rischi. Per il suo disegno è intervenuta la creatività e gli obiettivi che si voleva che compissero per arrivare a un prodotto soddisfacente e promettente. L’incorporazione delle nuove tecnologie digitali ha elevato il prodotto ad un livello diverso di quello che all’inizio si era previsto facendolo molto interesante per introdurlo nel mercato. Un sistema di ricerca del materiale apporta al prodotto un plus che può portare un gran avanzamento per lo sviluppo di nuove librerie o che così almeno si è voluto. Inoltre l'incorporazione di nuovi tipi di complementi, aggiunti a quelli già conosciuti, concedono al prodotto un'aria speciale che lo fa caratteristico ed unico. Come risultato si è ottenuto non solo l'ottenimento di una libreria molto attraente in presenza dell'utente ma anche molto pratica e moderna. Da qui, giudicate voi stessi., Outgoing

Published
2010

22. Partenariat comme instrument de gouvernance du social: entre le prescrit et le réel

Author

Programme Intensif de Coopération-Certificat Européen de Formation Universitaire en Travail Social (Du 4 au 6 juillet 2007: Università Degli Studi Di Trento (Italie)), Hamzaoui, Mejed, Programme Intensif de Coopération-Certificat Européen de Formation Universitaire en Travail Social (Du 4 au 6 juillet 2007: Università Degli Studi Di Trento (Italie)), and Hamzaoui, Mejed

Abstract

info:eu-repo/semantics/nonPublished

Published
2007

23. Norme interne per l'attività editoriale

Author

Università degli Studi di Trento. Dipartimento Facoltà di Giurisprudenza and Università degli Studi di Trento. Dipartimento Facoltà di Giurisprudenza

Abstract

Il documento disciplina i requisiti e le modalità di pubblicazione di opere nell’ambito delle Collane della Facoltà di Giurisprudenza dell’Università degli Studi di Trento e contempla altresì alcune norme sulle pubblicazioni c.d. ‘fuori Collane’.

24. Policy sull’accesso aperto (Open Access) alla letteratura scientifica

Author

Università degli Studi di Trento and Università degli Studi di Trento

Abstract

On January 29th 2014 the University of Trento adopted an Open Access policy which applies to all its members and their publications (scientific literature), except the works destined to commercial publishing with payment of royalties (unless otherwise specified by the author). The policy consists in an Immediate Deposit and Optional Access (ID-OA) mandate: as soon as a work is accepted for publication, it must be deposited in the University Open Access Current Research Information System (CRIS) in the digital final accepted draft (whenever possible, the publisher’s proprietary PDF version). The deposit consists in the full text and bibliographic/contextual metadata. Upon careful check of the intellectual property rights, the work is published in OA through the University Institutional Open Access Repository, immediately after the deposit or within six (twelve for human or social sciences) months from the date of acceptance.

25. Policy sull’accesso aperto (Open Access) alla letteratura scientifica

Author

Università degli Studi di Trento and Università degli Studi di Trento

Abstract

On January 29th 2014 the University of Trento adopted an Open Access policy which applies to all its members and their publications (scientific literature), except the works destined to commercial publishing with payment of royalties (unless otherwise specified by the author). The policy consists in an Immediate Deposit and Optional Access (ID-OA) mandate: as soon as a work is accepted for publication, it must be deposited in the University Open Access Current Research Information System (CRIS) in the digital final accepted draft (whenever possible, the publisher’s proprietary PDF version). The deposit consists in the full text and bibliographic/contextual metadata. Upon careful check of the intellectual property rights, the work is published in OA through the University Institutional Open Access Repository, immediately after the deposit or within six (twelve for human or social sciences) months from the date of acceptance.

26. Policy sull’accesso aperto (Open Access) alla letteratura scientifica

Author

Università degli Studi di Trento and Università degli Studi di Trento

Abstract

On January 29th 2014 the University of Trento adopted an Open Access policy which applies to all its members and their publications (scientific literature), except the works destined to commercial publishing with payment of royalties (unless otherwise specified by the author). The policy consists in an Immediate Deposit and Optional Access (ID-OA) mandate: as soon as a work is accepted for publication, it must be deposited in the University Open Access Current Research Information System (CRIS) in the digital final accepted draft (whenever possible, the publisher’s proprietary PDF version). The deposit consists in the full text and bibliographic/contextual metadata. Upon careful check of the intellectual property rights, the work is published in OA through the University Institutional Open Access Repository, immediately after the deposit or within six (twelve for human or social sciences) months from the date of acceptance.

27. Norme interne per l'attività editoriale

Author

Università degli Studi di Trento. Dipartimento Facoltà di Giurisprudenza and Università degli Studi di Trento. Dipartimento Facoltà di Giurisprudenza

Abstract

Il documento disciplina i requisiti e le modalità di pubblicazione di opere nell’ambito delle Collane della Facoltà di Giurisprudenza dell’Università degli Studi di Trento e contempla altresì alcune norme sulle pubblicazioni c.d. ‘fuori Collane’.

28. Policy sull’accesso aperto (Open Access) alla letteratura scientifica

Author

Università degli Studi di Trento and Università degli Studi di Trento

Abstract

On January 29th 2014 the University of Trento adopted an Open Access policy which applies to all its members and their publications (scientific literature), except the works destined to commercial publishing with payment of royalties (unless otherwise specified by the author). The policy consists in an Immediate Deposit and Optional Access (ID-OA) mandate: as soon as a work is accepted for publication, it must be deposited in the University Open Access Current Research Information System (CRIS) in the digital final accepted draft (whenever possible, the publisher’s proprietary PDF version). The deposit consists in the full text and bibliographic/contextual metadata. Upon careful check of the intellectual property rights, the work is published in OA through the University Institutional Open Access Repository, immediately after the deposit or within six (twelve for human or social sciences) months from the date of acceptance.

29. A Hybrid Control Framework for Impulsive Control of Satellite Rendezvous

Author

Sofia Urbina, Christophe Louembet, Mirko Brentari, Luca Zaccarian, Denis Arzelier, University of Trento [Trento], Équipe Méthodes et Algorithmes en Commande (LAAS-MAC), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Università degli Studi di Trento, Università degli Studi di Trento (UNITN), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), and Université de Toulouse (UT)

Subjects
Physics, 020301 aerospace & aeronautics, 0209 industrial biotechnology, Spacecraft, Computational complexity theory, business.industry, Computer science, Rendezvous mission, Rendezvous, Hybrid Control, 02 engineering and technology, Matrix similarity, [SPI.AUTO]Engineering Sciences [physics]/Automatic, Formalism (philosophy of mathematics), 020901 industrial engineering & automation, 0203 mechanical engineering, Control and Systems Engineering, Control theory, [INFO.INFO-AU]Computer Science [cs]/Automatic Control Engineering, 0202 electrical engineering, electronic engineering, information engineering, Fuel efficiency, 020201 artificial intelligence & image processing, Satellite, Electrical and Electronic Engineering, business
Abstract

International audience; We focus on the problem of satellite rendezvous between two spacecraft in elliptic orbits. Using a linearized model of the relative dynamics, we first propose a periodic similarity transformation based on Floquet-Lyapunov theory, leading to a set of coordinates under which the free motion is linear time-invariant. Then we address the problem of impulsive control of satellite rendezvous as a hybrid dynamical system, and we show that the arising elegant representation enables designing impulsive control laws with different trade-offs between computational complexity and fuel consumption. The adopted hybrid formalism allows us to prove suitable stability properties induced by the proposed controllers. The results are comparatively illustrated on simulation examples.

Published
2019
Full Text
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30. As release under the microbial sulfate reduction during redox oscillations in the upper Mekong delta aquifers, Vietnam: A mechanistic study

Author

Antoine Gehin, Delphine Tisserand, Raoul-Marie Couture, Laurent Charlet, Pierre Le Pape, Fabrizio Bardelli, Van T.H. Phan, Rizlan Bernier-Latmani, Manon Frutschi, Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut des Sciences de la Terre (ISTerre), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers (INSU - CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université Joseph Fourier - Grenoble 1 (UJF), GILDA (GILDA), Consiglio Nazionale delle Ricerche [Roma] (CNR)-Università degli Studi Roma Tre-INFM-Università degli Studi di Trento (UNITN), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement [IRD] : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Department of Earth and Environmental Sciences [Waterloo], University of Waterloo [Waterloo], Laboratoire de Géophysique Interne et Tectonophysique (LGIT), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Laboratoire Central des Ponts et Chaussées (LCPC)-Institut des Sciences de la Terre (ISTerre), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers (INSU - CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), and National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR)-Università degli Studi Roma Tre = Roma Tre University (ROMA TRE)-INFM-Università degli Studi di Trento (UNITN)

Subjects
Biogeochemical cycle, Elemental sulfur, Environmental Engineering, 010504 meteorology & atmospheric sciences, chemistry.chemical_element, 010501 environmental sciences, engineering.material, 01 natural sciences, Redox, Arsenic, chemistry.chemical_compound, Bioreactors, Redox oscillations, Mackinawite, Environmental Chemistry, Sulfate, Arsenic release, Groundwater, Waste Management and Disposal, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Bacteria, Sulfates, Pollution, Sulfur, Anoxic waters, 6. Clean water, X-Ray Absorption Spectroscopy, Vietnam, chemistry, Environmental chemistry, [SDE]Environmental Sciences, engineering, Pyrite, Oxidation-Reduction, Water Pollutants, Chemical, Microbial sulfate reduction, Environmental Monitoring
Abstract

The impact of seasonal fluctuations linked to monsoon and irrigation generates redox oscillations in the subsurface, influencing the release of arsenic (As) in aquifers. Here, the biogeochemical control on As mobility was investigated in batch experiments using redox cycling bioreactors and As- and SO42−-amended sediment. Redox potential (Eh) oscillations between anoxic (−300–0 mV) and oxic condition (0–500 mV) were implemented by automatically modulating an admixture of N2/CO2 or compressed air. A carbon source (cellobiose, a monomer of cellulose) was added at the beginning of each reducing cycle to stimulate the metabolism of the native microbial community. Results show that successive redox cycles can decrease arsenic mobility by up to 92% during reducing conditions. Anoxic conditions drive mainly the conversion of soluble As(V) to As(III) in contrast to oxic conditions. Phylogenetic analyses of 16S rRNA amplified from the sediments revealed the presence of sulfate and iron – reducing bacteria, confirming that sulfate and iron reduction are key factors for As immobilization from the aqueous phase. As and S K-edge X-ray absorption spectroscopy suggested the association of Fe-(oxyhydr)oxides and the importance of pyrite (FeS2(s)), rather than poorly ordered mackinawite (FeS(s)), for As sequestration under oxidizing and reducing conditions, respectively. Finally, these findings suggest a role for elemental sulfur in mediating aqueous thioarsenates formation in As-contaminated groundwater of the Mekong delta.

Published
2019
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31. Mineralogical investigations using XRD, XRF, and Raman spectroscopy in a combined approach

Author

M Secchi, Marco Zanatta, Marco Giarola, Beate Orberger, Gino Mariotto, Luca Lutterotti, Stefano Gialanella, Evgeny Borovin, Andrea Sanson, Mauro Bortolotti, Arun Kumar, Maurizio Montagna, Nicola Daldosso, Dipartimento di Ingegneria dei Materiali, Università degli Studi di Trento (UNITN), Department of Computer Science [Verona] (UNIVR | DI), University of Verona (UNIVR), IBM Research-India, Universita degli Studi di Padova, Géosciences Paris Sud (GEOPS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Fisica (Università Degli Studi di Trento), and Università degli Studi di Trento (UNITN)-Istituto Nazionale per la Fisica della Materia (INFM)-Caratterizzazione e Sviluppo di Materiali per la Fotonica e l'Optoelecttronica (CSMFO)

Subjects
combined analysis, Materials science, XRD, combined analysis, mineralogical phase identification, Raman, XRD, XRF, XRF, Analytical chemistry, [SDU.STU]Sciences of the Universe [physics]/Earth Sciences, 02 engineering and technology, 010502 geochemistry & geophysics, 01 natural sciences, symbols.namesake, mineralogical phase identification, Raman, Materials Science (all), Spectroscopy, General Materials Science, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, 021001 nanoscience & nanotechnology, Combined approach, [SDU]Sciences of the Universe [physics], symbols, 0210 nano-technology, Raman spectroscopy, Raman, XRD, XRF
Abstract

International audience

Published
2018
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32. Distributed Hybrid Observer With Prescribed Convergence Rate for a Linear Plant Using Multi-Hop Decomposition

Author

Riccardo Bertollo, Pablo Millan, Luis Orihuela, Alexandre Seuret, Luca Zaccarian, Università degli Studi di Trento (UNITN), Universidad Loyola Andalucía = Loyola University Andalucía, Universidad de Sevilla / University of Sevilla, Équipe Méthodes et Algorithmes en Commande (LAAS-MAC), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), and ANR-18-CE40-0010,HANDY,Systèmes Dynamiques Hybrides et en Réseau(2018)

Subjects
Hybrid observer, Control and Optimization, Input-to-State Stability, Sensor network, Control and Systems Engineering, [MATH.MATH-DS]Mathematics [math]/Dynamical Systems [math.DS], FOS: Mathematics, Distributed estimation, Linear systems, Dynamical Systems (math.DS), Mathematics - Dynamical Systems
Abstract

With a continuous-time formulation of the multihop decomposition, we propose a distributed hybrid observer for a sensor network where the plant and local observers run in continuous time and the information exchange among the sensing nodes is sampled-data. Process disturbances, measurement noise and communication noise are considered, and we prove that under some necessary detectability assumptions the observer gains can be tuned to guarantee exponential ISS with a prescribeda convergence rate. Simulations illustrate the performance of the proposed observer.

Published
2023
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33. Waves of regret: A meg study of emotion and decision-making

Author

Nicolao Bonini, Alessandro Grecucci, Gianpaolo Demarchi, Cinzia Giorgetta, Alan G. Sanfey, Giorgio Coricelli, Christoph Braun, Università degli Studi di Trento (UNITN), Institute of Cognitive Sciences and Technologies, National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Groupe d'Analyse et de Théorie Economique Lyon - Saint-Etienne (GATE Lyon Saint-Étienne), École normale supérieure de Lyon (ENS de Lyon)-Université Lumière - Lyon 2 (UL2)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Center for Mind/Brain Sciences, Department of Economics, University of Southern California, University of Southern California (USC), Univ Stuttgart, Inst Polymerchem, Universität Stuttgart [Stuttgart], University Hospital Tübingen MEG Center, University Hospital Tübingen, Donders Institute for Brain, Cognition and Behaviour, Radboud University [Nijmegen], Dipartimento di psicologia e scienze cognitive, Università degli studi di Trento, Consiglio Nazionale delle Ricerche [Roma] (CNR), Dipartimento di Economia e Management, Università degli studi di Trento, Groupe d'analyse et de théorie économique (GATE Lyon Saint-Étienne), Centre National de la Recherche Scientifique (CNRS)-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université Lumière - Lyon 2 (UL2)-École normale supérieure - Lyon (ENS Lyon), and Radboud university [Nijmegen]

Subjects
Adult, Male, Cognitive Neuroscience, media_common.quotation_subject, Decision Making, Emotions, Experimental and Cognitive Psychology, Affect (psychology), Choice Behavior, Functional Laterality, Feedback, Young Adult, Behavioral Neuroscience, Risk-Taking, Agency (sociology), 140 000 Decision neuroscience, Reaction Time, medicine, Humans, media_common, Feedback, Physiological, Analysis of Variance, Brain Mapping, Disappointment, Neural correlates of consciousness, Behaviour Change and Well-being, Sense of agency, Brain, Magnetoencephalography, Electroencephalography, Regret, [SHS.ECO]Humanities and Social Sciences/Economics and Finance, Games, Experimental, Agency, Feeling, Female, medicine.symptom, Psychology, Attribution, Cognitive psychology
Abstract

Recent fMRI studies have investigated brain activity involved in the feeling of regret and disappointment by manipulating the feedback participants saw after making a decision to play certain gambles: full-feedback (regret: participant sees the outcomes from both the chosen and unchosen gamble) vs. partial-feedback (disappointment: participant only sees the outcome from chosen gamble). However, regret and disappointment are also characterized by differential agency attribution: personal agency for regret, external agency for disappointment. In this study, we investigate the neural correlates of these two characterizations of regret and disappointment using magnetoencephalography (MEG). To do this, we experimentally induced each emotion by manipulating feedback (chosen gamble vs. unchosen gamble), agency (human vs. computer choice) and outcomes (win vs. loss) in a fully randomized design. At the behavioral level the emotional experience of regret and disappointment were indeed affected by both feedback and agency manipulations. These emotions also differentially affect subsequent choices, with regret leading to riskier behavior. At the neural level both feedback and agency affected the brain responses associated with regret and disappointment, demonstrating differential localization in the brain for each. Notably, feedback regret showed greater brain activity in the right anterior and posterior regions, with agency regret producing greater activity in the left anterior region. These findings extend the evidence for neural activity in processing both regret and disappointment by highlighting for the first time the respective importance of feedback and agency, as well as outlining the temporal dynamics of these emotions. (C) 2012 Elsevier Ltd. All rights reserved.

Published
2013
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34. Kardar–Parisi–Zhang universality in a one-dimensional polariton condensate

Author

Quentin Fontaine, Davide Squizzato, Florent Baboux, Ivan Amelio, Aristide Lemaître, Martina Morassi, Isabelle Sagnes, Luc Le Gratiet, Abdelmounaim Harouri, Michiel Wouters, Iacopo Carusotto, Alberto Amo, Maxime Richard, Anna Minguzzi, Léonie Canet, Sylvain Ravets, Jacqueline Bloch, Centre de Nanosciences et de Nanotechnologies (C2N), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et modélisation des milieux condensés (LPM2C ), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire Matériaux et Phénomènes Quantiques (MPQ (UMR_7162)), Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Università degli Studi di Trento (UNITN), Universiteit Antwerpen = University of Antwerpen [Antwerpen], Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Nanophysique et Semiconducteurs (NEEL - NPSC), Institut Néel (NEEL), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), ANR-16-IDEX-0004,ULNE,ULNE(2016), and ANR-18-CE92-0019,NEQfluids,Fluides classiques, quantiques et actifs hors de l'équilibre(2018)

Subjects
Multidisciplinary, Physics, Engineering sciences. Technology, [PHYS.COND.CM-MSQHE]Physics [physics]/Condensed Matter [cond-mat]/Mesoscopic Systems and Quantum Hall Effect [cond-mat.mes-hall]
Abstract

Revealing universal behaviours is a hallmark of statistical physics. Phenomena such as the stochastic growth of crystalline surfaces(1) and of interfaces in bacterial colonies(2), and spin transport in quantum magnets(3-6) all belong to the same universality class, despite the great plurality of physical mechanisms they involve at the microscopic level. More specifically, in all these systems, space-time correlations show power-law scalings characterized by universal critical exponents. This universality stems from a common underlying effective dynamics governed by the nonlinear stochastic Kardar-Parisi-Zhang (KPZ) equation(7). Recent theoretical works have suggested that this dynamics also emerges in the phase of out-of-equilibrium systems showing macroscopic spontaneous coherence(8-17). Here we experimentally demonstrate that the evolution of the phase in a driven-dissipative one-dimensional polariton condensate falls in the KPZ universality class. Our demonstration relies on a direct measurement of KPZ space-time scaling laws(18,19), combined with a theoretical analysis that reveals other key signatures of this universality class. Our results highlight fundamental physical differences between out-of-equilibrium condensates and their equilibrium counterparts, and open a paradigm for exploring universal behaviours in driven open quantum systems.

Published
2022
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35. Wherever I may roam—Human activity alters movements of red deer ( Cervus elaphus ) and elk ( Cervus canadensis ) across two continents

Author

Mumme, S., Middleton, A.D., Ciucci, P., De Groeve, J., Corradini, A., Aikens, E.O., Ossi, F., Atwood, P., Balkenhol, N., Cole, E.K., Debeffe, L., Dewey, S.R., Fischer, C., Gude, J., Heurich, M., Hurley, M.A., Jarnemo, A., Kauffman, M.J., Licoppe, A., van Loon, E., Mcwhirter, D., Mong, T.W., Pedrotti, L., Morellet, N., Mysterud, A., Peters, W., Proffitt, K., Saïd, S., Signer, J., Sunde, P., Starý, M., Cagnacci, F., University of California [Berkeley] (UC Berkeley), University of California (UC), Sapienza Univ Roma, Dept Biol & Biotechnol Charles Darwin, Rome, Italy., Universiteit Gent = Ghent University (UGENT), Fondazione Edmund Mach - Edmund Mach Foundation [Italie] (FEM), University of Amsterdam [Amsterdam] (UvA), Dipartimento di Informatica [Pisa], University of Pisa - Università di Pisa, University of Wyoming (UW), Laboratoire de Biométrie et Biologie Evolutive - UMR 5558 (LBBE), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Recherche en Informatique et en Automatique (Inria)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Centre National de la Recherche Scientifique (CNRS), Biodiversity and Molecular Ecology Department, IASMA Research and Innovation Centre, Georg-August-University = Georg-August-Universität Göttingen, Unité de recherche Comportement et Ecologie de la Faune Sauvage (CEFS), Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), LTSER ZA PYRenees GARonne, Centre National de la Recherche Scientifique (CNRS), Halmstad University, Haute Ecole du Paysage, d'Ingénierie et d'Architecture de Genève (HEPIA), Department of Conservation and Research, Bavarian Forest National Park, Faculty of Environment and Natural Resources, Wildlife Ecology and Management, University of Freiburg, Idaho Department of Fish and Game (IDFG), Institut des sciences de la Vie, Université Catholique de Louvain = Catholic University of Louvain (UCL), Universiteit van Amsterdam (UvA), Assmåsa Gods AB, Danish Forest and Nature Agency, Grand Teton Association, Holmen Skog AB, Högestad & Christinehofs Förvaltnings AB, International Research School of Applied Ecology, Ittur AB, Stelvio National Park Ersaf Lombardia and Trento, Stiftelsen Skånska Landskap, Stiftelsen Oscar och Lili Lamms Minne, Svenska Jägareförbundet:5871/2005, Marie-Claire Cronstedts Stiftelse, Fondazione Edmund Mach, Knobloch Family Foundation, Ministero dell’Istruzione, dell’Università e della Ricerca1034 17/06/2022, CN00000033, Università degli Studi di Trento, and Naturvårdsverket 802‐0092‐11

Subjects
Cervus spp, Settore BIO/07 - ECOLOGIA, Anthropocene, [SDE]Environmental Sciences, wildlife, human footprint, migratory ungulates, Wildlife, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, [SDE.ES]Environmental Sciences/Environmental and Society, movement expression
Abstract

International audience; Human activity and associated landscape modifications alter the movements of animals with consequences for populations and ecosystems worldwide. Species performing long-distance movements are thought to be particularly sensitive to human impact. Despite the increasing anthropogenic pressure, it remains challenging to understand and predict animals' responses to human activity. Here we address this knowledge gap using 1206 Global Positioning System movement trajectories of 815 individuals from 14 red deer (Cervus elaphus) and 14 elk (Cervus canadensis) populations spanning wide environmental gradients, namely the latitudinal range from the Alps to Scandinavia in Europe, and the Greater Yellowstone Ecosystem in North America. We measured individual-level movements relative to the environmental context, or movement expression, using the standardized metric Intensity of Use, reflecting both the directionality and extent of movements. We expected movement expression to be affected by resource (Normalized Difference Vegetation Index, NDVI) predictability and topography, but those factors to be superseded by human impact. Red deer and elk movement expression varied along a continuum, from highly segmented trajectories over relatively small areas (high intensity of use), to directed transitions through restricted corridors (low intensity of use). Human activity (Human Footprint Index, HFI) was the strongest driver of movement expression, with a steep increase in Intensity of Use as HFI increased, but only until a threshold was reached. After exceeding this level of impact, the Intensity of Use remained unchanged. These results indicate the overall sensitivity of Cervus movement expression to human activity and suggest a limitation of plastic responses under high human pressure, despite the species also occurring in human-dominated landscapes. Our work represents the first comparison of metric-based movement expression across widely distributed populations of a deer genus, contributing to the understanding and prediction of animals' responses to human activity.

Published
2023
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36. A geometric analysis of the impact of large but finite switching rates on vaccination evolutionary games

Author

Della Marca, Rossella, d'Onofrio, Alberto, Sensi, Mattia, Sottile, Sara, Scuola Internazionale Superiore di Studi Avanzati / International School for Advanced Studies (SISSA / ISAS), Università degli studi di Trieste = University of Trieste, Mathématiques pour les Neurosciences (MATHNEURO), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), Politecnico di Torino = Polytechnic of Turin (Polito), and Università degli Studi di Trento (UNITN)

Subjects
fast-slow system, Populations and Evolution (q-bio.PE), behavioural epidemiology of infectious diseases, Dynamical Systems (math.DS), fast-slow system behavioural epidemiology of infectious diseases entry-exit function vaccine hesitancy mathematical epidemiology geometric singular perturbation theory, FOS: Biological sciences, FOS: Mathematics, geometric singular perturbation theory, vaccine hesitancy, entry-exit function, Mathematics - Dynamical Systems, [MATH]Mathematics [math], Quantitative Biology - Populations and Evolution, mathematical epidemiology
Abstract

In contemporary society, social networks accelerate decision dynamics causing a rapid switch of opinions in a number of fields, including the prevention of infectious diseases by means of vaccines. This means that opinion dynamics can nowadays be much faster than the spread of epidemics. Hence, we propose a Susceptible-Infectious-Removed epidemic model coupled with an evolutionary vaccination game embedding the public health system efforts to increase vaccine uptake. This results in a global system ``epidemic model + evolutionary game''. The epidemiological novelty of this work is that we assume that the switching to the strategy ``pro vaccine'' depends on the incidence of the disease. As a consequence of the above-mentioned accelerated decisions, the dynamics of the system acts on two different scales: a fast scale for the vaccine decisions and a slower scale for the spread of the disease. Another, and more methodological, element of novelty is that we apply Geometrical Singular Perturbation Theory (GSPT) to such a two-scale model and we then compare the geometric analysis with the Quasi-Steady-State Approximation (QSSA) approach, showing a criticality in the latter. Later, we apply the GSPT approach to the disease prevalence-based model already studied in (Della Marca and d'Onofrio, Comm Nonl Sci Num Sim, 2021) via the QSSA approach by considering medium-large values of the strategy switching parameter., Comment: 26 pages, 6 figures

Published
2023

37. Protection of Ising spin-orbit coupling in bulk misfit superconductors

Author

Samuely, Tomas, Wickramaratne, Darshana, Gmitra, Martin, Jaouen, Thomas, Šofranko, Ondrej, Volavka, Dominik, Kuzmiak, Marek, Haniš, Jozef, Szabó, Pavol, Monney, Claude, Kremer, Geoffroy, Fèvre, Patrick Le, Bertran, François, Cren, Tristan, Sasaki, Shunsuke, Cario, Laurent, Calandra, Matteo, Mazin, Igor I., Samuely, Peter, Pavol Jozef Šafárik University, US Naval Research Laboratory, Slovak Academy of Sciences (SAS), Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Université de Fribourg = University of Fribourg (UNIFR), Institut Jean Lamour (IJL), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Spectroscopie des nouveaux états quantiques (INSP-E2), Institut des Nanosciences de Paris (INSP), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux Jean Rouxel (IMN), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Nantes université - UFR des Sciences et des Techniques (Nantes univ - UFR ST), Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - Ecole Polytechnique de l'Université de Nantes (Nantes Univ - EPUN), Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), Università degli Studi di Trento (UNITN), George Mason University [Fairfax], This work was supported by the projects APVV-20-0425, VEGA 2/0058/20, EMP-H2020 Project No. 824109, COST action CA21144 (SUPERQUMAP), EU ERDF (European regional development fund) Grant No. VA SR ITMS2014+ 313011W856. D.W. was supported by the Office of Naval Research (ONR) through the Naval Research Laboratory’s Basic Research Program. I.I.M. was supported by ONR through grant N00014-20-1-2345. C.M. and G.K. acknowledges financial support from the Swiss National Science Foundation (SNSF) Grant No. P00P2_170597. M.G. and J.H. acknowledge support by the projects APVV-SK-CZ-RD-21-0114, VEGA 1/0105/20 and Slovak Academy of Sciences project IMPULZ IM-2021-42 and project FLAG ERA JTC 2021 2DSOTECH., and ANR-21-CE30-0054,Misfit,Supraconductivité et phases topologiques dans les dichalcogénures misfits(2021)

Subjects
Superconductivity (cond-mat.supr-con), [PHYS.COND.CM-S]Physics [physics]/Condensed Matter [cond-mat]/Superconductivity [cond-mat.supr-con], Condensed Matter - Superconductivity, FOS: Physical sciences
Abstract

Low-dimensional materials have remarkable properties that are distinct from their bulk counterparts. A paradigmatic example is Ising superconductivity that occurs in monolayer materials such as NbSe2 which show a strong violation of the Pauli limit. In monolayers, this occurs due to a combination of broken inversion symmetry and spin-orbit coupling that locks the spins of the electrons out-of-plane. Bulk NbSe2 is centrosymmetric and is therefore not an Ising superconductor. We show that bulk misfit compound superconductors, (LaSe)1.14(NbSe2) and (LaSe)1.14(NbSe2)2, comprised of monolayers and bilayers of NbSe2, exhibit unexpected Ising protection with a Pauli-limit violation comparable to monolayer NbSe2, despite formally having inversion symmetry. We study these misfit compounds using complementary experimental methods in combination with first-principles calculations. We propose theoretical mechanisms of how the Ising protection can survive in bulk materials. We show how some of these mechanisms operate in these bulk compounds due to a concerted effect of charge-transfer, defects, reduction of interlayer hopping, and stacking. This highlights how Ising superconductivity can, unexpectedly, arise in bulk materials, and possibly enable the design of bulk superconductors that are resilient to magnetic fields., Comment: 14 pages, 4 figures, 4 extended data items

Published
2023

38. A geometric analysis of the SIRS model with secondary infections

Author

Kaklamanos, Panagiotis, Pugliese, Andrea, Sensi, Mattia, Sottile, Sara, School of Mathematics - University of Edinburgh, University of Edinburgh, Università degli Studi di Trento (UNITN), Mathématiques pour les Neurosciences (MATHNEURO), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), and Politecnico di Torino = Polytechnic of Turin (Polito)

Subjects
Physics - Physics and Society, FOS: Biological sciences, Populations and Evolution (q-bio.PE), FOS: Mathematics, FOS: Physical sciences, Dynamical Systems (math.DS), Physics and Society (physics.soc-ph), [MATH]Mathematics [math], Mathematics - Dynamical Systems, Quantitative Biology - Populations and Evolution, 34C23, 34C60, 34E13, 34E15, 37N25, 92D30
Abstract

We propose a compartmental model for a disease with temporary immunity and secondary infections. From our assumptions on the parameters involved in the model, the system naturally evolves in three time scales. We characterize the equilibria of the system and analyze their stability. We find conditions for the existence of two endemic equilibria, for some cases in which $\mathcal{R}_0 < 1$. Then, we unravel the interplay of the three time scales, providing conditions to foresee whether the system evolves in all three scales, or only in the fast and the intermediate ones. We conclude with numerical simulations and bifurcation analysis, to complement our analytical results., 31 pages, 9 figures

Published
2023

39. Feedback modulates the temporal scale-free dynamics of brain electrical activity in a hypothesis testing task

Author

Pierre-Marie Baudonnière, David Papo, C. van Vreeswijk, Marco Buiatti, Centre de neurophysique, physiologie, pathologie (UMR 8119), Université Paris Descartes - Paris 5 (UPD5)-Centre National de la Recherche Scientifique (CNRS), Neuroimagerie cognitive (LCogn), Université Paris-Sud - Paris 11 (UP11)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Functional NeuroImaging Laboratory, Università degli Studi di Trento (UNITN)-Center for Mind/Brain Sciences, Wohl Institute for Advanced Imaging, Sourasky Medical Center, Laboratoire de psychologie cognitive (LPC), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Department of Psychology, Tel Aviv University (TAU), Neurosciences cognitives et imagerie cérébrale (NCIC), Centre National de la Recherche Scientifique (CNRS), Center for Mind/Brain Sciences-Università degli Studi di Trento (UNITN), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Tel Aviv University [Tel Aviv], Université Paris Descartes - Paris 5 (UPD5) - Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11) - Commissariat à l'énergie atomique et aux énergies alternatives (CEA) - Institut National de la Santé et de la Recherche Médicale (INSERM), Università di Trento - Center for Mind/Brain Sciences, and Centre National de la Recherche Scientifique (CNRS) - Aix Marseille Université (AMU)

Subjects
Male, Eye Movements, Brain activity and meditation, MESH : Photic Stimulation, Electroencephalography, 01 natural sciences, Task (project management), Mental Processes, 0302 clinical medicine, MESH: Eye Movements, MESH : Feedback, hypothesis testing, MESH : Female, EEG, MESH : Algorithms, MESH: Mental Processes, detrended fluctuation analysis, MESH: Electrophysiology, medicine.diagnostic_test, MESH: Feedback, General Neuroscience, scaling, Brain, MESH : Adult, Electrophysiology, MESH: Photic Stimulation, Female, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Psychology, Algorithms, Adult, MESH : Mental Processes, MESH : Male, MESH: Algorithms, MESH: Psychomotor Performance, NO, Feedback, MESH: Brain, 03 medical and health sciences, MESH : Electrophysiology, Negative feedback, MESH: Electroencephalography, 0103 physical sciences, medicine, Humans, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], MESH : Electroencephalography, 010306 general physics, Positive feedback, Statistical hypothesis testing, MESH : Eye Movements, Communication, Neural correlates of consciousness, MESH: Humans, business.industry, MESH : Humans, MESH: Adult, MESH : Psychomotor Performance, MESH: Male, MESH : Brain, Detrended fluctuation analysis, ongoing brain activity, business, MESH: Female, Neuroscience, Photic Stimulation, Psychomotor Performance, 030217 neurology & neurosurgery
Abstract

We used the electroencephalogram (EEG) to investigate whether positive and negative performance feedbacks exert different long-lasting modulations of electrical activity in a reasoning task. Nine college students serially tested hypotheses concerning a hidden rule by judging its presence or absence in triplets of digits, and revised them on the basis of an exogenous performance feedback. The scaling properties of the transition period between feedback and triplet presentation were investigated with detrended fluctuation analysis (DFA). DFA showed temporal scale-free dynamics of EEG activity in both feedback conditions for time scales larger than 150 ms. Furthermore, DFA revealed that negative feedback elicits significantly higher scaling exponents than positive feedback. This effect covers a wide network comprising parieto-occipital and left frontal regions. We thus showed that specific task demands can modify the temporal scale-free dynamics of the ongoing brain activity. Putative neural correlates of these long-lasting feedback-specific modulations are proposed.

Published
2007
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40. Integrated optical amplifiers and microspherical lasers based on erbium-doped oxide glasses

Author

Adolfo Speghini, Alessandro Chiasera, Massimo Brenci, Marco Bettinelli, Maurizio Montagna, Maurizio Ferrari, Stefano Pelli, L. Zampedri, Patrice Féron, Cristina Siligardi, Giancarlo C. Righini, Simone Berneschi, Carole Arnaud, G. Nunzi Conti, Herve Portales, Istituto di Fisica Applicata 'Nello Carrara' (IFAC), National Research Council of Italy | Consiglio Nazionale delle Ricerche (CNR), Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Elettronica, Informatica e Sistemistica (DEIS), Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Dipartimento Scientifico e Tecnologico (DST), Università degli studi di Verona = University of Verona (UNIVR), Istituto di Fotonica e Nanotecnologie (IFN), Università degli Studi di Trento (UNITN), Dipartimento di Ingegneria dei Materiali e dell'Ambiente (DIMA), Università degli Studi di Modena e Reggio Emilia = University of Modena and Reggio Emilia (UNIMORE), Consiglio Nazionale delle Ricerche [Roma] (CNR), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne, University of Verona (UNIVR), Dipartimento di Fisica (Università Degli Studi di Trento), Università degli Studi di Trento (UNITN)-Istituto Nazionale per la Fisica della Materia (INFM)-Caratterizzazione e Sviluppo di Materiali per la Fotonica e l'Optoelecttronica (CSMFO), and Università degli Studi di Modena e Reggio Emilia (UNIMORE)

Subjects
Nonlinear optics, Materials science, Fabrication, Photoluminescence, Optical fiber, Coupled modes theory, Erbium doped glasses, Er3+-doped glass, Physics::Optics, chemistry.chemical_element, 02 engineering and technology, Condensed Matter::Disordered Systems and Neural Networks, 01 natural sciences, law.invention, Inorganic Chemistry, Erbium, silica glass, Optics, law, 0103 physical sciences, optical amplifier, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Spectroscopy, Micro-resonator, 010302 applied physics, Optical amplifier, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], optical amplifiers, business.industry, Organic Chemistry, PACS: 42.70.Ce, 42.82.Et, 78.66.Jg, 82.65.F, Integrated optics, 021001 nanoscience & nanotechnology, Laser, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Condensed Matter::Soft Condensed Matter, Er doped glass, chemistry, microsphere, Bistability, Whispering-gallery wave, 0210 nano-technology, business
Abstract

published in " Optical Materials ", special issue " Selected Papers of the Second International Workshop on Photonic and Electronic Materials ", topic " Photonic materials "; International audience; Er3+ -doped glasses have been a subject of great interest in the recent years for their application in the areas of guided wave optical amplifiers and lasers. Oxide-glass matrices, in particular, offer the advantage of relatively simple fabrication processes--both for bulk glasses and optical fibers--and have demonstrated quite good properties in the 1.5 µm wavelength band. Here we present some results we have obtained in the development of different silica-based glasses and in their application to the production of integrated optical amplifiers and microspherical lasers. As to the former application, two classes of silica glasses have been produced and investigated, namely a melted soda-lime-alumino-silicate glass and a sol-gel silica-hafnia glass. Both of them exhibit a wide emission bandwidth and seem quite promising for broadband optical amplifiers. We also demonstrated low-threshold microlasers, based on whispering gallery mode spherical resonators, fabricated in different oxide glasses.

Published
2005
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41. Regularity of solutions to the fractional Cheeger-Laplacian on domains in metric spaces of bounded geometry

Author

Gareth Speight, Nageswari Shanmugalingam, Gianmarco Giovannardi, Sylvester Eriksson-Bique, Riikka Korte, University of Oulu, Università degli Studi di Trento, Department of Mathematics and Systems Analysis, University of Cincinnati, Aalto-yliopisto, and Aalto University

Subjects
Primary: 31E05, Secondary: 35A15, 50C25, 35J70, Hölder condition, Metric measure space, 01 natural sciences, Fractional Laplacian, Combinatorics, 010104 statistics & probability, Mathematics - Analysis of PDEs, Mathematics - Metric Geometry, Traces and extensions, FOS: Mathematics, Uniqueness, 0101 mathematics, Besov space, Existence and uniqueness for Dirichlet problem, Mathematics, Dirichlet problem, Applied Mathematics, 010102 general mathematics, Metric Geometry (math.MG), Dirichlet's energy, Metric space, Bounded function, Laplace operator, Analysis, Strong maximum principle, Analysis of PDEs (math.AP)
Abstract

We study existence, uniqueness, and regularity properties of the Dirichlet problem related to fractional Dirichlet energy minimizers in a complete doubling metric measure space $(X,d_X,\mu_X)$ satisfying a $2$-Poincar\'e inequality. Given a bounded domain $\Omega\subset X$ with $\mu_X(X\setminus\Omega)>0$, and a function $f$ in the Besov class $B^\theta_{2,2}(X)\cap L^2(X)$, we study the problem of finding a function $u\in B^\theta_{2,2}(X)$ such that $u=f$ in $X\setminus\Omega$ and $\mathcal{E}_\theta(u,u)\le \mathcal{E}_\theta(h,h)$ whenever $h\in B^\theta_{2,2}(X)$ with $h=f$ in $X\setminus\Omega$. We show that such a solution always exists and that this solution is unique. We also show that the solution is locally H\"older continuous on $\Omega$, and satisfies a non-local maximum and strong maximum principle. Part of the results in this paper extend the work of Caffarelli and Silvestre in the Euclidean setting and Franchi and Ferrari in Carnot groups., Comment: 42 pages, comments welcome, submitted. Revision to add crucial references and attributions to the introduction

Published
2022
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42. Covid-19 affects taste independent of taste-smell confusions: results from a combined chemosensory home test and online survey from a large global cohort

Author

Nguyen, Ha, Albayay, Javier, Höchenberger, Richard, Bhutani, Surabhi, Boesveldt, Sanne, Busch, Niko, Croijmans, Ilja, Cooper, Keiland, de Groot, Jasper, Farruggia, Michael, Fjaeldstad, Alexander, Hayes, John, Hummel, Thomas, Joseph, Paule, Laktionova, Tatiana, Thomas-Danguin, Thierry, Veldhuizen, Maria, Voznessenskaya, Vera, Parma, Valentina, Pepino, M. Yanina, Ohla, Kathrin, Monell Chemical Senses Center, Università degli Studi di Trento (UNITN), Université Paris-Saclay, INRIA, CEA, San Diego State University (SDSU), Wageningen University and Research [Wageningen] (WUR), Westfälische Wilhelms-Universität Münster = University of Münster (WWU), Radboud University [Nijmegen], University of California (UC), Yale University [New Haven], University research clinic [Herning, Denmark], The Pennsylvania State University, PA, University of Dresden Medical School, National Institutes of Health [Bethesda] (NIH), A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences [Moscow] (RAS), Centre des Sciences du Goût et de l'Alimentation [Dijon] (CSGA), Université de Bourgogne (UB)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Mersin University, University of Illinois at Urbana-Champaign [Urbana], and University of Illinois System

Subjects
[SDV.NEU.PC]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Psychology and behavior, chemesthesis, ageusia, gustation, [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition, anosmia, taste-smell confusion, olfaction
Abstract

International audience; People often confuse smell loss with taste loss, so it is unclear how much gustatory function is reduced in patients self-reporting taste loss. Our pre-registered cross-sectional study design included an online survey in 12 languages with instructions for self-administering chemosensory tests with ten household items. Between June 2020 and March 2021, 10,953 individuals participated. Of these, 5,225 self-reported a respiratory illness and were grouped based on their reported COVID test results: COVID-positive (COVID+, N=3,356), COVID-negative (COVID-, N=602), and COVID unknown for those waiting for a test result (COVID?, N=1,267). The participants who reported no respiratory illness were grouped by symptoms: sudden smell/taste changes (STC, N=4,445), other symptoms excluding smell or taste loss (OthS, N=832), and no symptoms (NoS, N=416). Taste, smell, and oral irritation intensities and self-assessed abilities were rated on visual analog scales. Compared to the NoS group, COVID+ was associated with a 21% reduction in taste (95% Confidence Interval (CI): 15-28%), 47% in smell (95%-CI: 37-56%), and 17% in oral irritation (95%-CI: 10-25%) intensity. In all groups, the perceived intensity of smell (r=0.84), taste (r=0.68), and oral irritation (r=0.37) was correlated. Our study demonstrates that COVID-19 positive individuals report taste dysfunction when self-tested with stimuli that have little to none olfactory components. Assessing the smell and taste intensity of household items is a promising, cost-effective screening tool that complements self-reports and may help to disentangle taste loss from smell loss. However, it does not replace standardized validated psychophysical tests.

Published
2023
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43. A survey on Lyapunov functions for epidemic compartmental models

Author

Cangiotti, Nicolò, Capolli, Marco, Sensi, Mattia, Sottile, Sara, Dipartimento di Matematica [Politecnico Milano] (POLIMI), Politecnico di Milano [Milan] (POLIMI), Institut of Mathematics - Polish Academy of Sciences (PAN), Polska Akademia Nauk = Polish Academy of Sciences (PAN), Mathématiques pour les Neurosciences (MATHNEURO), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria), and Università degli Studi di Trento (UNITN)

Subjects
34D20, 34D23, 37N25, 92D30, FOS: Mathematics, Dynamical Systems (math.DS), Mathematics - Dynamical Systems, [MATH]Mathematics [math]
Abstract

In this survey, we propose an overview on Lyapunov functions for a variety of compartmental models in epidemiology. We exhibit the most widely employed functions, together with a commentary on their use. Our aim is to provide a comprehensive starting point to readers who are attempting to prove global stability of systems of ODEs. The focus is on mathematical epidemiology, however some of the functions and strategies presented in this paper can be adapted to a wider variety of models, such as prey-predator or rumor spreading., Comment: 18 pages, 4 figures

Published
2023
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44. Characterizing a Neutron-Induced Fault Model for Deep Neural Networks

Author

Fernando Fernandes dos Santos, Angeliki Kritikakou, Josie E. Rodriguez Condia, Juan-David Guerrero-Balaguera, Matteo Sonza Reorda, Olivier Sentieys, Paolo Rech, Architectures matérielles spécialisées pour l’ère post loi-de-Moore (TARAN), Inria Rennes – Bretagne Atlantique, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-ARCHITECTURE (IRISA-D3), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes 1 (UR1), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Politecnico di Torino = Polytechnic of Turin (Polito), Università degli Studi di Trento (UNITN), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique), This project has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie (MSCA) grant agreement No 899546., and ANR-21-CE24-0015,RE-TRUSTING,Architectures matérielles fiable pour l'Intelligence Artificielle de confiance(2021)

Subjects
FOS: Computer and information sciences, [INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR], Nuclear and High Energy Physics, Nuclear Energy and Engineering, Hardware Architecture (cs.AR), Electrical and Electronic Engineering, Computer Science - Hardware Architecture
Abstract

International audience; The reliability evaluation of Deep Neural Networks (DNNs) executed on Graphic Processing Units (GPUs) is a challenging problem since the hardware architecture is highly complex and the software frameworks are composed of many layers of abstraction. While software-level fault injection is a common and fast way to evaluate the reliability of complex applications, it may produce unrealistic results since it has limited access to the hardware resources and the adopted fault models may be too naive (i.e., single and double bit flip). Contrarily, physical fault injection with neutron beam provides realistic error rates but lacks fault propagation visibility. This paper proposes a characterization of the DNN fault model combining both neutron beam experiments and fault injection at software level. We exposed GPUs running General Matrix Multiplication (GEMM) and DNNs to beam neutrons to measure their error rate. On DNNs, we observe that the percentage of critical errors can be up to 61%, and show that ECC is ineffective in reducing critical errors. We then performed a complementary software-level fault injection, using fault models derived from RTL simulations. Our results show that by injecting complex fault models, the YOLOv3 misdetection rate is validated to be very close to the rate measured with beam experiments, which is 8.66× higher than the one measured with fault injection using only single-bit flips.

Published
2022

45. Solving Footstep Planning as a Feasibility Problem Using L1-Norm Minimization

Author

Nicolas Mansard, Pierre Fernbach, Thomas Flayols, Daeun Song, Steve Tonneau, Andrea Del Prete, Young J. Kim, EWHA Womans University (EWHA), TOWARD, Équipe Mouvement des Systèmes Anthropomorphes (LAAS-GEPETTO), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Università degli Studi di Trento (UNITN), University of Edinburgh, European Project: 780684,H2020,MEMMO(2018), TOrque controlled WAlking Robots Development (TOWARD), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), and Université de Toulouse (UT)

Subjects
Minimisation (psychology), motion and path planning, Mathematical optimization, Control and Optimization, Computer science, Mechanical Engineering, Biomedical Engineering, Humanoid and bipedal locomotion, Computer Science Applications, Human-Computer Interaction, Cardinality, legged robots, Artificial Intelligence, Control and Systems Engineering, Norm (mathematics), Convergence (routing), Trajectory, [INFO.INFO-RB]Computer Science [cs]/Robotics [cs.RO], Computer Vision and Pattern Recognition, Minification, Pruning (decision trees), Integer (computer science)
Abstract

Extended version of the paper to be published in IEEE Robotics and Automation Letters; International audience; One challenge of legged locomotion on uneven terrains is to deal with both the discrete problem of selecting a contact surface for each footstep and the continuous problem of placing each footstep on the selected surface. Consequently, footstep planning can be addressed with a Mixed Integer Program (MIP), an elegant but computationally-demanding method, which can make it unsuitable for online planning. We reformulate the MIP into a cardinality problem, then approximate it as a computationally efficient l1-norm minimisation, called SL1M. Moreover, we improve the performance and convergence of SL1M by combining it with a sampling-based root trajectory planner to prune irrelevant surface candidates. Our tests on the humanoid Talos in four representative scenarios show that SL1M always converges faster than MIP. For scenarios when the combinatorial complexity is small (< 10 surfaces per step), SL1M converges at least two times faster than MIP with no need for pruning. In more complex cases, SL1M converges up to 100 times faster than MIP with the help of pruning. Moreover, pruning can also improve the MIP computation time. The versatility of the framework is shown with additional tests on the quadruped robot ANYmal.

Published
2021
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46. On the Cauchy problem for Friedrichs systems on globally hyperbolic manifolds with timelike boundary

Author

Ginoux, N., Murro, S., Institut Élie Cartan de Lorraine (IECL), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Università degli Studi di Trento (UNITN), and INFN-TIFPA

Subjects
Mathematics - Differential Geometry, Dirac operator, Primary 53C50, 58J45, Secondary 35L50, 53C27, FOS: Physical sciences, globally hyperbolic manifolds with timelike boundary, symmetric hyperbolic systems, Mathematics - Analysis of PDEs, normally hyperbolic operator, [MATH.MATH-MP]Mathematics [math]/Mathematical Physics [math-ph], FOS: Mathematics, [MATH.MATH-AP]Mathematics [math]/Analysis of PDEs [math.AP], heat operator, Mathematical Physics, Klein-Gordon operator, reaction-diffusion operator, admissible boundary conditions, Applied Mathematics, Mathematical Physics (math-ph), Mathematics::Spectral Theory, Mathematics::Geometric Topology, MSC Primary 53C50, 58J45, Secondary 35L50, 53C27, symmetric positive systems, Differential Geometry (math.DG), [MATH.MATH-DG]Mathematics [math]/Differential Geometry [math.DG], Primary 53C50, 58J45, Analysis, Analysis of PDEs (math.AP)
Abstract

In this paper, the Cauchy problem for a Friedrichs system on a globally hyperbolic manifold with a timelike boundary is investigated. By imposing admissible boundary conditions, the existence and the uniqueness of strong solutions are shown. Furthermore, if the Friedrichs system is hyperbolic, the Cauchy problem is proved to be well-posed in the sense of Hadamard. Finally, examples of Friedrichs systems with admissible boundary conditions are provided., Comment: 34 pages -- accepted in Advances in Differential Equations

Published
2022
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47. Symbolic use of marine shells and mineral pigments by Iberian Neandertals

Author

Carmen Pérez-Sirvent, Josefina Zapata, Marian Vanhaeren, Sonia Murcia-Mascarós, Ricardo Montes-Bernardez, João Zilhão, Thomas Higham, Floréal Daniel, Laure Dayet, Francesco d'Errico, Diego E. Angelucci, Clodoaldo Roldan-Garcia, Rachel Wood, Ernestina Badal-Garcia, Katerina Douka, María José Martínez-Sánchez, Valentín Villaverde, Department of Archaeology and Anthropology, University of Bristol [Bristol], Università degli Studi di Trento, Laboratorio di Preistoria B. Bagolini, Universidad de Valencia, Departamento de Prehistoria y Arqueología, De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie (PACEA), Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Department of Archaeology, University of the Witwatersrand [Johannesburg] (WITS), IRAMAT-Centre de recherche en physique appliquée à l’archéologie (IRAMAT-CRP2A), Institut de Recherches sur les Archéomatériaux (IRAMAT), Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS)-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Université Bordeaux Montaigne-Centre National de la Recherche Scientifique (CNRS), University of Oxford [Oxford], Universidad de Murcia, Departamento de Química Agrícola, Geología y Edafología, Fundación de Estudios Murcianos Marqués de Corvera, 30566 Las Torres de Cotillas, INSTITUTO DE CIENCIA DE LOS MATERIALES, Archéologies et Sciences de l'Antiquité (ArScAn), Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris Nanterre (UPN)-Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS), Área de Antropología Física, Università degli Studi di Trento (UNITN), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), University of Oxford, Université Paris 1 Panthéon-Sorbonne (UP1)-Université Paris 8 Vincennes-Saint-Denis (UP8)-Université Paris Nanterre (UPN)-Ministère de la Culture et de la Communication (MCC)-Institut national de recherches archéologiques préventives (Inrap)-Centre National de la Recherche Scientifique (CNRS), and Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Montaigne-Université de Technologie de Belfort-Montbeliard (UTBM)-Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Université Bordeaux Montaigne-Université de Technologie de Belfort-Montbeliard (UTBM)

Subjects
010506 paleontology, Behavioral modernity, Neanderthal, Middle Paleolithic, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, Mineralogy, Social Sciences, engineering.material, 01 natural sciences, Acanthocardia, biology.animal, Animals, 0601 history and archaeology, shell ornaments, Coloring Agents, 0105 earth and related environmental sciences, Minerals, Multidisciplinary, Glycymeris, 060102 archaeology, biology, 06 humanities and the arts, Hematite, biology.organism_classification, Archaeology, Spondylus, symbolism, Mollusca, Spain, visual_art, Anthropology, visual_art.visual_art_medium, engineering, Pyrite, Iberia, behavioral modernity
Abstract

Two sites of the Neandertal-associated Middle Paleolithic of Iberia, dated to as early as approximately 50,000 years ago, yielded perforated and pigment-stained marine shells. At Cueva de los Aviones, three umbo-perforated valves of Acanthocardia and Glycymeris were found alongside lumps of yellow and red colorants, and residues preserved inside a Spondylus shell consist of a red lepidocrocite base mixed with ground, dark red-to-black fragments of hematite and pyrite. A perforated Pecten shell, painted on its external, white side with an orange mix of goethite and hematite, was abandoned after breakage at Cueva Antón, 60 km inland. Comparable early modern human-associated material from Africa and the Near East is widely accepted as evidence for body ornamentation, implying behavioral modernity. The Iberian finds show that European Neandertals were no different from coeval Africans in this regard, countering genetic/cognitive explanations for the emergence of symbolism and strengthening demographic/social ones.

Published
2010
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48. Restarting 'Normal' Life after Covid-19 and the Lockdown: Evidence from Spain, the United Kingdom, and Italy

Author

Rafael Charris, Giuseppe Veltri, Giovanni Liva, Francesco Bogliacino, Camilo Gómez, Felipe Montealegre, Cristiano Codagnone, Frans Folkvord, Francisco Lupiañez Villanueva, Universitat Oberta de Catalunya (UOC), Universidad Nacional de Colombia, Università Degli Studi Di Trento, and Università Degli Studi Di Milano

Subjects
medicine.medical_specialty, Matching (statistics), Behavioural change, COVID-19, Expectation, Fear, Negative economic shocks, Sociology and Political Science, bepress|Social and Behavioral Sciences|Economics, Population, SocArXiv|Social and Behavioral Sciences|Psychology|Cognitive Psychology, 050109 social psychology, Settore SECS-P/02 - Politica Economica, Outcome (game theory), Arts and Humanities (miscellaneous), Depression (economics), Fear Expectation, D90, 0502 economics and business, Human geography, D91, Developmental and Educational Psychology, medicine, Economics, 0501 psychology and cognitive sciences, 050207 economics, education, Original Research, bepress|Social and Behavioral Sciences|Psychology, education.field_of_study, H12, I12, Public health, 05 social sciences, SocArXiv|Social and Behavioral Sciences|Economics, General Social Sciences, SocArXiv|Social and Behavioral Sciences|Economics|Behavioral Economics, bepress|Social and Behavioral Sciences|Psychology|Cognitive Psychology, Shock (economics), D84, bepress|Social and Behavioral Sciences|Economics|Behavioral Economics, bepress|Social and Behavioral Sciences, Demographic economics, SocArXiv|Social and Behavioral Sciences, SocArXiv|Social and Behavioral Sciences|Psychology, Social capital
Abstract

In this article, we examine the expectations of the economic outlook, fear of the future, and behavioural change during the first Covid-19 wave, for three European countries (Spain, the United Kingdom, and Italy) that have been severely hit. We use a novel dataset that we collected to monitor the three countries during the crisis. As outcome variables, we used expectations (e.g., economic outlook, labour market situation, recovery), fear (e.g., scenario of new outburst, economic depression, restriction to individual rights and freedom), and behavioural change across the following dimensions: savings, cultural consumption, social capital, and risky behaviour. We provide descriptive evidence that is representative of the population of interest, and we estimate the impact of exposure to shock occurred during the crisis on the same outcome variables, using matching techniques. Our main findings are the following: we detected systematically negative expectations regarding the future and the recovery, majoritarian fears of an economic depression, a new outbreak, and a permanent restriction on freedom, a reduction in saving and in social capital. Exposure to shocks decreased expected job prospects, increased withdrawal from accumulated savings, and reduced contacts with the network relevant to job advancement, whereas it had inconclusive effects over fears. Supplementary Information The online version contains supplementary material available at 10.1007/s11205-021-02697-5.

Published
2021
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49. Polyp longevity in a precious gorgonian coral: hints toward a demographic approach to polyp dynamics

Author

Giovanni Santangelo, Mimmo Iannelli, Fabrizio Erra, Fabio Bulleri, Cristina Priori, Maria Carla Benedetti, Lorenzo Bramanti, Dipartimento di Biologia, University of Pisa - Università di Pisa, Laboratoire d'Ecogéochimie des environnements benthiques (LECOB), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Observatoire océanologique de Banyuls (OOB), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Department of mathematics/Dipartimento di Matematica [Univ. Trento], and Università degli Studi di Trento (UNITN)

Subjects
0106 biological sciences, media_common.quotation_subject, Coral, Population, Mortality table, Zoology, Aquatic Science, Biology, 010603 evolutionary biology, 01 natural sciences, Budding rate, otorhinolaryngologic diseases, 14. Life underwater, Corallium rubrum, education, neoplasms, [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography, Maximum life span, media_common, education.field_of_study, 010604 marine biology & hydrobiology, Longevity, pathological conditions, signs and symptoms, biology.organism_classification, digestive system diseases, surgical procedures, operative, Gorgonian, Octocoral, Polyp age, Age distribution, Coenenchyme, [SDE.BE]Environmental Sciences/Biodiversity and Ecology
Abstract

International audience; In this paper, we investigated the age distribution and dynamics of polyps in the slow-growing and long-lived gorgonian Corallium rubrum (the Mediterranean red coral), applying an a posteriori demographic approach by considering each colony as a population of polyps. In the Mediterranean red coral, new polyps emerge from the coenenchyme in different regions of the colony and their budding rate depends on the age of branches. The age of polyps, branches and colonies were estimated using the organic-matter-staining dating method on thin sections of the colony skeleton. The median age and maximum life span of polyps were 4 and 12 years suggesting the presence of senescence processes: thus a colony renews several times its polyps during life cycle. Polyps were divided into annual age classes, and their mortality rates calculated. The polyp age distribution was then used to construct a mortality table and an algebraic transition matrix based on the age at death of 234 polyps. Finally, the polyp budding rate of a young, unbranched colony was calculated, and polyp temporal dynamics simulated. These findings represent the first steps for developing demographic models able to describe polyp dynamics of old and highly branched colonies.

Published
2020
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50. Foliar Application of a Tagatose-Based Product Reduces Downy Mildew Symptoms through Induction of Grapevine Resistance and Anti-Oomycete Action

Author

Mijailovic, Nikola, Nesler, Andrea, Perazzolli, Michele, Aziz, Aziz, Essaïd, Ait Barka, Résistance Induite et Bioprotection des Plantes - EA 4707 (RIBP), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Fondazione Edmund Mach - Edmund Mach Foundation [Italie] (FEM), Università degli Studi di Trento (UNITN), and European Project: 722642,INTERFUTURE

Subjects
Settore BIO/04 - FISIOLOGIA VEGETALE, downy mildew, [SDV.SA.AGRO]Life Sciences [q-bio]/Agricultural sciences/Agronomy, grapevine, D-tagatose, [SDV.BV.PEP]Life Sciences [q-bio]/Vegetal Biology/Phytopathology and phytopharmacy
Abstract

Downy mildew caused by the oomycete Plasmopara viticola represents one of the most devastating diseases in vineyards. Current ways to control this disease rely mainly on fungicide applications, but agro-ecological concerns have raised interest in sustainable alternative methods. Certain rare sugars, like D-tagatose, have shown efficacy in reducing various plant diseases, including grapevine downy mildew. However, the mechanism of action of D-tagatose against grapevine downy mildew is not understood. The aim of this study was to characterize the efficacy and mechanism of action of a D-tagatose-based formulated product (IFP48) against grapevine downy mildew and compare it with the correspondent active molecule, pure D-tagatose (TAG). Whereas IFP48 root treatment provided scarce protection, the leaf treatment was the most efficient, especially at the dosage of 5 g/L. In particular, IFP48 treatment directly inhibited P. viticola sporangia germination, upregulated the expression of defense-related genes, and increased the content of stilbene phytoalexins. Conversely, the expression of defense-related genes and the content of stilbene phytoalexins were only slightly affected by TAG, suggesting that the formulation possibly improved D-tagatose effects against downy mildew in grapevine.

Published
2022
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