Integrazione della fotomodellazione nel processo di rilievo. Applicazioni alle costruzioni alpine tradizionali in pietra

This contribute shows the most significant results of the Interreg-AlpStone research in relation to the methods of survey for stone constructions. The Alpine territory located in the area between Italy and Switzerland presents a rich architectural heritage which has an important value both from the cultural (for the local traditions) and real-estate (for touristic and residential aims) points of view. In order to recover these typical buildings it needs in primis to find the survey methodology that best fits the goal. The buildings realized with stone materials are characterized, for their nature, by a high degree of irregularity, which is still more evident in abandoned buildings. This irregularity can't be ignored because it could affect several aspects of the redevelopment (seismic and thermal renovation, space management,…). Techniques of survey with laser scanner and photomodelling have been tested. Photomodelling turned out to be a convenient technique because of its cheapness, its facility of use and its practicality in territories such as the Alpine ones, with impervious paths. The degree of detail of the photomodelling is lower than the one of laser scanner. Nevertheless, for the recovery, the survey based on the multi-images correlation turned out to be largely sufficient for a careful critical analysis of instabilities, deformations and inflections of the building components. The only inconveniences are the time employed for the photos snapshots and the difficulty in modeling the natural context near the architectural heritag

Modeling the catastrophe, and beyond. Digital History and Visualization methods for multiscalar process description of the Nubia Temples flooding

World heritage sites are exposed to the impacts of natural and human-induced catastrophic events which threaten their integrity. According with UNESCO the loss or deterioration of these outstanding properties have severely negative impacts on local communities because of their cultural importance and because of their socio-economic value. The paper focuses on a multiscalar human-induced environmental change with catastrophic effects on the Nubia temples and on the prospective of using a multiscalar process description for studying and visualizing historical and environmental changes related to disasters. Beyond the disaster, the displacement both of temples and villages provoked other kind of damages. The case study presents how the disaster and the risk of damages on Cultural Heritage can be recorded and monitored at the scale of temples, artistic elements (i.e. statues, decorations), till the large portion of territory including villages. The paper highlights the disaster caused by the High Aswan Dam as a warning for an international awareness on a sustainable development that needs to take into account the cultural heritage. It discusses the cultural memory as crucial for Disaster Risk Reduction strategies. Our approach uses 3D models in order to collect data and to make understandable risks, damages and solutions. Historical research and Visualization methods create a fresh context of knowledge for a case study strongly representative of the World Heritage Disaster

La Geometria come filo di Arianna: note di approfondimento sul rapporto ideazione-costruzione della più grande cupola di forma ovata del mondo

La cupola del Santuario di Vicoforte in Piemonte costituisce un'opera di particolare complessità costruttiva sia per le sue dimensioni sia per la sua forma: è infatti la più grande cupola ovata in muratura nel mondo. Questo studio riguarda la genesi geometrica della costruzione delle cupola, ed evidenzia che la cupola costruita è, da un punto di vista dei parametri geometrici, alquanto diversa da quella disegnata nei progetti. La ricerca è focalizzata sull'analisi geometrica delle sezioni verticali della cupola, al fine indagare il profilo delle centine usate nella costruzione. I risultati possono consentire una più attillata definizione dei modelli di simulazione del comportamento strutturale e sismico che sono necessari per la conservazione dell'integrità del manufatto. The dome of the Sanctuary of Vicoforte, the largest oval masonry dome in the world, is an exceptional expression of building technique for its shape and dimension. This study wants to add information about the geometrical conception of the dome using the modern modeling possibilities based on recent laser scanner survey. In particular it integrates the analysis of the archival drawings and the 3D survey of the dome in order to investigate the geometrical shape of the temporary centrings used in the dome construction. Improving the knowledge about the tridimensional shape and the construction techniques of such dome is of crucial importance at the moment, because the Sanctuary is the subject of a structural monitoring and research campaign due to the important settlements and cracking fenomena that affect the buildin

La Geometria come filo di Arianna: note di approfondimento sul rapporto ideazione-costruzione della più grande cupola di forma ovata del mondo

La cupola del Santuario di Vicoforte in Piemonte costituisce un’opera di particolare complessità costruttiva sia per le sue dimensioni sia per la sua forma: è infatti la più grande cupola ovata in muratura nel mondo. Questo studio riguarda la genesi geometrica della costruzione delle cupola, ed evidenzia che la cupola costruita è, da un punto di vista dei parametri geometrici, alquanto diversa da quella disegnata nei progetti. La ricerca è focalizzata sull’analisi geometrica delle sezioni verticali della cupola, al fine indagare il profilo delle centine usate nella costruzione. I risultati possono consentire una più attillata definizione dei modelli di simulazione del comportamento strutturale e sismico che sono necessari per la conservazione dell’integrità del manufatto. The dome of the Sanctuary of Vicoforte, the largest oval masonry dome in the world, is an exceptional expression of building technique for its shape and dimension. This study wants to add information about the geometrical conception of the dome using the modern modeling possibilities based on recent laser scanner survey. In particular it integrates the analysis of the archival drawings and the 3D survey of the dome in order to investigate the geometrical shape of the temporary centrings used in the dome construction. Improving the knowledge about the tridimensional shape and the construction techniques of such dome is of crucial importance at the moment, because the Sanctuary is the subject of a structural monitoring and research campaign due to the important settlements and cracking fenomena that affect the buildin

Integrazione della fotomodellazione nel processo di rilievo. Applicazioni alle costruzioni alpine tradizionali in pietra

This contribute shows the most significant results of the Interreg-AlpStone research in relation to the methods of survey for stone constructions. The Alpine territory located in the area between Italy and Switzerland presents a rich architectural heritage which has an important value both from the cultural (for the local traditions) and real-estate (for touristic and residential aims) points of view. In order to recover these typical buildings it needs in primis to find the survey methodology that best fits the goal. The buildings realized with stone materials are characterized, for their nature, by a high degree of irregularity, which is still more evident in abandoned buildings. This irregularity can’t be ignored because it could affect several aspects of the redevelopment (seismic and thermal renovation, space management,…). Techniques of survey with laser scanner and photomodelling have been tested. Photomodelling turned out to be a convenient technique because of its cheapness, its facility of use and its practicality in territories such as the Alpine ones, with impervious paths. The degree of detail of the photomodelling is lower than the one of laser scanner. Nevertheless, for the recovery, the survey based on the multi-images correlation turned out to be largely sufficient for a careful critical analysis of instabilities, deformations and inflections of the building components. The only inconveniences are the time employed for the photos snapshots and the difficulty in modeling the natural context near the architectural heritage

Report of the First ONTOX Stakeholder Network Meeting: Digging Under the Surface of ONTOX Together With the Stakeholders

The first Stakeholder Network Meeting of the EU Horizon 2020-funded ONTOX project was held on 13–14 March 2023, in Brussels, Belgium. The discussion centred around identifying specific challenges, barriers and drivers in relation to the implementation of non-animal new approach methodologies (NAMs) and probabilistic risk assessment (PRA), in order to help address the issues and rank them according to their associated level of difficulty. ONTOX aims to advance the assessment of chemical risk to humans, without the use of animal testing, by developing non-animal NAMs and PRA in line with 21st century toxicity testing principles. Stakeholder groups (regulatory authorities, companies, academia, non-governmental organisations) were identified and invited to participate in a meeting and a survey, by which their current position in relation to the implementation of NAMs and PRA was ascertained, as well as specific challenges and drivers highlighted. The survey analysis revealed areas of agreement and disagreement among stakeholders on topics such as capacity building, sustainability, regulatory acceptance, validation of adverse outcome pathways, acceptance of artificial intelligence (AI) in risk assessment, and guaranteeing consumer safety. The stakeholder network meeting resulted in the identification of barriers, drivers and specific challenges that need to be addressed. Breakout groups discussed topics such as hazard versus risk assessment, future reliance on AI and machine learning, regulatory requirements for industry and sustainability of the ONTOX Hub platform. The outputs from these discussions provided insights for overcoming barriers and leveraging drivers for implementing NAMs and PRA. It was concluded that there is a continued need for stakeholder engagement, including the organisation of a ‘hackathon’ to tackle challenges, to ensure the successful implementation of NAMs and PRA in chemical risk assessment

Insights into household transmission of SARS-CoV-2 from a population-based serological survey

Understanding the risk of infection from household- and community-exposures and the transmissibility of asymptomatic infections is critical to SARS-CoV-2 control. Limited previous evidence is based primarily on virologic testing, which disproportionately misses mild and asymptomatic infections. Serologic measures are more likely to capture all previously infected individuals. We apply household transmission models to data from a cross-sectional, household-based population serosurvey of 4,534 people ≥5 years from 2,267 households enrolled April-June 2020 in Geneva, Switzerland. We found that the risk of infection from exposure to a single infected household member aged ≥5 years (17.3%,13.7-21.7) was more than three-times that of extra-household exposures over the first pandemic wave (5.1%,4.5-5.8). Young children had a lower risk of infection from household members. Working-age adults had the highest extra-household infection risk. Seropositive asymptomatic household members had 69.4% lower odds (95%CrI,31.8-88.8%) of infecting another household member compared to those reporting symptoms, accounting for 14.5% (95%CrI, 7.2-22.7%) of all household infections

San Giovanni Decollato baroque church

The survey covers the inside of a Baroque church designed in 1751 by F. Nicolis di Robilant. The church interior is characterized by rich baroque decorations and by vaults inspired by the famous architect G. Guarini. The complexity of the baroque architecture requires a careful consideration of the decorative details to be represented, and the survey focuses on the search for a useful integration of several techniques (3D laser scan, digital photogrammetry, digital modelling) in a digital data stream from data capture to the nal model