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49 Research products, page 1 of 5

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  • 2013-2022
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  • Publication . Part of book or chapter of book . Conference object . 2014
    Open Access
    Authors: 
    Duccio Troiano; Andrés García Morro; Alessandro Merlo; Eduardo Vendrell Vidal;
    Publisher: Springer International Publishing
    Country: Italy

    Despite extensive research having been conducted on the subject, the problem of three-dimensional information systems for historical cities is actually still unresolved. In addition, commercially available software seems to be increasingly aiming at a quick development of unspecific urban settings, rather than at a metrically and perceptively faithful representation of reality. In this scenario, the SIUR 3D software (Sistema Informativo URbano tridimensionale) is based on a management structure that links an interactive, photorealistic and metrically reliable model of a city with a qualitative database of the historical, archaeological and material scope of an architectural part. Such application uses the Unity 3D game engine for geometrical models management and is equipped for online data sharing.

  • Publication . Other literature type . Article . Conference object . 2020
    Open Access English
    Authors: 
    Juan Ortiz-Sanz; Mariluz Gil-Docampo; T. Rego-Sanmartín; Marcos Arza-García; Grazia Tucci; E. I. Parisi; Valentina Bonora; Francesco Mugnai;
    Countries: Spain, Italy

    Abstract. The advent of the smartphones brought with them higher processing capabilities and improved camera specifications which boosted the applications of mobile-based imagery in a range of domains. One of them is the 3-D reconstruction of objects by means of photogrammetry, which now enjoys great popularity. This fact brings potential opportunities to develop educational procedures in high schools using smartphone-based 3-D scanning techniques. On this basis, we designed a Project Based e-Learning (PBeL) initiative to introduce secondary students to the disciplines of photogrammetry through the use of their mobile phones in an attractive and challenging way for them. The paper describes the motivation behind the project "D3MOBILE Metrology World League”, supported by ISPRS as part of the "Educational and Capacity Building Initiative 2020" programme. With this Science, Technology, Engineering and Mathematics (STEM) initiative, we implement a methodology with the format of an international competition, that can be adapted to daily classwork at the high school level anywhere in the world. Therefore, the championship is essentially structured around a collection of well-thought-out e-learning materials (text guidelines, video tutorials, proposed exercises, etc.), providing a more flexible access to content and instruction at any time and from any place. The methodology allows students to gain spatial skills and to practice other transversal abilities, learn the basics of photogrammetric techniques and workflows, gain experience in the 3-D modelling of simple objects and practice a range of techniques related to the science of measurement.

  • Open Access
    Authors: 
    Enrico Bondi; Lorenzo Seidenari; Andrew D. Bagdanov; Alberto Del Bimbo;
    Publisher: IEEE
    Country: Italy

    In this paper we describe a system for automatic people counting in crowded environments. The approach we propose is a counting-by-detection method based on depth imagery. It is designed to be deployed as an autonomous appliance for crowd analysis in video surveillance application scenarios. Our system performs foreground/background segmentation on depth image streams in order to coarsely segment persons, then depth information is used to localize head candidates which are then tracked in time on an automatically estimated ground plane. The system runs in realtime, at a frame-rate of about 20 fps. We collected a dataset of RGB-D sequences representing three typical and challenging surveillance scenarios, including crowds, queuing and groups. An extensive comparative evaluation is given between our system and more complex, Latent SVM-based head localization for person counting applications.

  • Publication . Article . Conference object . Preprint . 2020
    Open Access English
    Authors: 
    Alessandra De Rosa; Cristian Vignali; Tamara Bogdanovic; Pedro R. Capelo; Maria Charisi; Massimo Dotti; Bernd Husemann; Elisabeta Lusso; Lucio Mayer; Zsolt Paragi; +20 more
    Publisher: HAL CCSD
    Countries: Italy, United Kingdom, Hungary, Hungary, Italy, United Kingdom, Spain, France, Spain, Italy ...
    Project: SNSF | Massive black holes as gr... (178949), NWO | Genes for Seed Quality (2300149325), EC | DIFERENS2 (609412), NSF | Collaborative Research: M... (1715661), EC | imbh (647208), NSF | NANOGrav Physics Frontier... (1430284), EC | B Massive (818691), SNSF | Massive black holes as gr... (178949), NWO | Genes for Seed Quality (2300149325), EC | DIFERENS2 (609412),...

    All authors acknowledge the hospitality of the Lorentz Center for international workshops (Leiden, The Netherlands), where the idea of this work was born, and acknowledge the support of the International Space Science Institute (ISSI Bern, Switzerland), where the collaboration was originated. We thank the reviewers for having provided valuable and constructive comments that improved the clarity of the manuscript, and J.E. Barnes, L. Blecha, M. Eracleous, B.D. Farris, H. Fu, X. Liu, R. Pfeifle, L.C. Popovic, C. Ricci, S. Rodriguez, S. Tang, G. B. Taylor for their kind permission to reuse figures from their publications. ADR, CV and SB acknowledge financial support from ASI under grant ASI-INAF I/037/12/0 , and from the agreement ASI-INAF n. 2017-14-H.O . TB acknowledges support by the National Aeronautics and Space Administration under Grant No. NNX15AK84G and 80NSSC19K0319 issued through the Astrophysics Theory Program and by the Research Corporation for Science Advancement through a Cottrell Scholar Award. SF and KÉG thank the Hungarian National Research, Development, and Innovation Office ( OTKA NN110333 ) for support. KÉG was supported by the János Bolyai Research Scholarship of the Hungarian Academy of Sciences and by the ÚNKP-19-4 New National Excellence Program of the Ministry for Innovation and Technology. BH acknowledges financial support by the DFG grant GE625/17-1 . EL is supported by a European Union COFUND/Durham Junior Research Fellowship (under EU grant agreement no. 609412). DL acknowledges support from the European Research Council (ERC) under grant 647208 (PI Jonker). AS is supported by the ERC CoG grant 818691 (B Massive). MGi is supported by the “Programa de Atracción de Talento” of the Comunidad de Madrid grant 2018-T1/TIC-11733 for the project: “Unveiling Black Hole Winds from Space”, and by the Spanish State Research Agency (AEI) grant MDM-2017-0737 Unidad de Excelencia “María de Maeztu” - Centro de Astrobiología (INTA-CSIC). PRC and LM acknowledge support from the Swiss National Science Foundation under the Grant 200020_178949 . MC acknowledges support from the National Science Foundation (NSF) NANOGrav Physics Frontier Center, award number 1430284 . NHR acknowledges support from the BMBF Verbundforschung under FKZ: 05A17PC1 and FKZ: 05A17PC2. ZH acknowledges support from NASA grants NNX17AL82G and 80NSSC19K0149 and NSF grant 1715661 . KI acknowledges support by the Spanish MINECO under grant AYA2016-76012-C3-1-P and MDM-2014-0369 of ICCUB (Unidad de Excelencia ’María de Maeztu’). MPT acknowledges financial support from the Spanish MCIU through the “Center of Excellence Severo Ochoa” award for the Instituto de Astrofísica de Andalucía ( SEV-2017-0709 ) and through the MINECO grants AYA2012-38491-C02-02 and AYA2015-63939-C2-1-P . The quest for binary and dual supermassive black holes (SMBHs) at the dawn of the multi-messenger era is compelling. Detecting dual active galactic nuclei (AGN) -- active SMBHs at projected separations larger than several parsecs -- and binary AGN -- probing the scale where SMBHs are bound in a Keplerian binary -- is an observational challenge. The study of AGN pairs (either dual or binary) also represents an overarching theoretical problem in cosmology and astrophysics. The AGN triggering calls for detailed knowledge of the hydrodynamical conditions of gas in the imminent surroundings of the SMBHs and, at the same time, their duality calls for detailed knowledge on how galaxies assemble through major and minor mergers and grow fed by matter along the filaments of the cosmic web. This review describes the techniques used across the electromagnetic spectrum to detect dual and binary AGN candidates and proposes new avenues for their search. The current observational status is compared with the state-of-the-art numerical simulations and models for formation of dual and binary AGN. Binary SMBHs are among the loudest sources of gravitational waves (GWs) in the Universe. The search for a background of GWs at nHz frequencies from inspiralling SMBHs at low redshifts, and the direct detection of signals from their coalescence by the Laser Interferometer Space Antenna in the next decade, make this a theme of major interest for multi-messenger astrophysics. This review discusses the future facilities and observational strategies that are likely to significantly advance this fascinating field.© 2020 Elsevier B.V. 69 pages, 21 figures. Accepted for publication in New Astronomy Reviews © 2020 Elsevier B.V.

  • Open Access
    Authors: 
    Bercigli, Monica;
    Publisher: EDITORIAL PUBLICACIONS UNIVERSITAT D’ALACANT
    Countries: Italy, Spain

    Saturo is a coastal site to the South of Taranto that shows a prolonged frequentation during the time dating back to the Neolithic phases. The tower is part of a series of 21, built as defensive system characterized by punctual elements protecting the Ionian coast from attacks. This paper reports the survey and restitution experience of the Saturo Tower, conducted through Structure From Motion techniques based on previous surveys. The aim is to define a procedural process which allows to perform accurate and reliable three-dimensional reconstructions for the knowledge and the dissemination of Cultural Heritage, taking advantage of representation and visualization techniques that has been developed in the last decade.

  • Open Access
    Authors: 
    Gennai, Matilde; Viciani, Daniele; Foggi, Bruno; Belmonte, Elisa; Landucci, F; Casella, L; Angelini, P; Agrillo, E; Massimi, M; Selvaggi, A; +1 more
    Publisher: University of the Basque Country
    Country: Italy
  • Open Access English
    Authors: 
    Brinkman, D.J.; Tichelaar, J.; Schutte, T.; Benemei, S.; Böttiger, Y.; Chamontin, B.; Christiaens, T.; Likic, R; Maˇiulaitis, R.; Marandi, T.; +13 more
    Publisher: HAL CCSD
    Countries: Netherlands, Netherlands, Belgium, United Kingdom, Spain, Italy, Sweden, France, Croatia

    International audience; European medical students should have acquired adequate prescribing competencies before graduation, but it is not known whether this is the case. In this international multicenter study, we evaluated the essential knowledge, skills, and attitudes in clinical pharmacology and therapeutics (CPT) of final-year medical students across Europe. In a cross-sectional design, 26 medical schools from 17 European countries were asked to administer a standardized assessment and questionnaire to 50 final-year students. Although there were differences between schools, our results show an overall lack of essential prescribing competencies among final-year students in Europe. Students had a poor knowledge of drug interactions and contraindications, and chose inappropriate therapies for common diseases or made prescribing errors. Our results suggest that undergraduate teaching in CPT is inadequate in many European schools, leading to incompetent prescribers and potentially unsafe patient care. A European core curriculum with clear learning outcomes and assessments should be urgently developed.

  • Open Access
    Authors: 
    Patrizio Fausti; Carrascal García, T.; Ingelaere, B.; Machimbarrena, M.; Monteiro, C.; Andrea Santoni; Secchi, S.; Smith, S.;
    Publisher: COST Action TU0901
    Country: Italy
  • Publication . Other literature type . Conference object . Part of book or chapter of book . 2020
    Open Access
    Authors: 
    Stefano Bertocci; Matteo Bigongiari;
    Publisher: Universidad de Granada, Universitat Politècnica de València, Patronato de la Alhambra y Generalife
    Countries: Italy, Spain, Italy

    [EN] This paper deals with the documentation and digital survey of fortifications in the historic city of Piombino. During the Renaissance the fortified perimeter of the city was considerably enlarged, both because of the will of the Lords of Piombino, the Appiani, to build a fortified citadel, deeming the previous urban palace inadequate for the ruling family, and to improve the defenses by land with the construction of a rivellino in front of the north door and of a fortress to the east. The defenses, conquered by Valentino’s troops in 1502, were redesigned by Leonardo da Vinci, as documented in the pages of Code II of Madrid, which contains drawings and calculations for the construction of the works. The present project, started in April 2018, plans to carry out an accurate digital survey of fortifications, in order to provide the basis for graphic documentation on which to base further cognitive investigations, from archaeological ones to diagnostic ones. The survey operations were carried out with today’s digital technologies, laser scanners and cameras, creating reliable point clouds and three-dimensional models mapped with texture, from which to extract 2D drawings. The study of the sources, of the texts of Leonardo’s scholars and accurate archaeological investigations will provide the opportunity to further analyze Leonardo’s intervention on the still existing structures.

  • Open Access
    Authors: 
    Benedetto Allotta; Pugi, L.; Bartolini, F.; Costanzi, R.; Ridolfi, A.; Monni, N.; Gelli, J.; Vettori, G.; Gualdesi, L.; Natalini, M.;
    Countries: Spain, Italy

    Within the framework of the Thesaurus project (Italian acronym for “TecnicHe per l’Esplorazione Sottomarina Archeologica mediante l’Utilizzo di Robot aUtonomi in Sciami”), the authors have developed a low cost, multirole Autonomous Underwater Vehicle, briefly called Tifone, whose design is the main topic of this paper. According to the expected performances and specifications, the vehicle has to maintain a good autonomy and efficiency, typical features of an AUV (Autonomous Underwater Vehicle), also maintaining high manoeuvrability and hovering capabilities, which are instead more common on ROVs (Remotely Operated Vehicles).Cooperative exploration and surveillance tasks involve the use of swarms of vehicles; the control, the mutual localization and communications among vehicles are fundamental tasks to be optimized. In particular, the optimization of costs with respect to benefits plays a critical role, considering that within the Thesaurus project a first fleet of three vehicles has to be developed. This work mainly deals with the different design phases of the vehicle and with the results of preliminary simulations and tests performed in the MDM laboratories, before the next lake (Roffia basin, between Pisa and Florence, Italy) and sea testing activities (Elba Island, Italy) that will be performed in spring and summer 2013.

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