1,356,799 research outputs found
Olinto de Pretto a Citizen Scientist a Century Ago
No full textThe paper is an examination by the author of the contents of a publication written by the Italian scholar Olinto De Pretto in 1904. This work was virtually unknown until it was cited a few years ago by the Italian professor Umberto Bartocci. Bartocci, who teaches the history of mathematics at the University of Peru, confirmed that De Pretto had written the mass-energy equivalence formula of special relativity in his paper a year before Einstein's famous article. Bartocci affirmed that Einstein could have understood formula by a friend of his who was a friend of De Pretto too Bartocci idea was not taken seriously. The author has now examined De Pretto's paper. In this paper De Pretto presented his vision of the universe as composed of matter and luminiferous ether in interaction with each other and both having an atomic structure. In this paper there are similarities with aspects of contemporary physics, including a formula formally equivalent to the most famous formula of Einstein's theory of relativity. However, De Pretto's vision is entirely internal to classical physics and is therefore surpassed by the facts. The figure of De Pretto, on the other hand, is very interesting and has strong similarities with the current phenomenon of citizen science. 
Entrevista: Prof. Dr. Nelson De Luca Pretto (por Alan Queiroz da Costa)
No full textInterview given by Nelson De Luca Pretto a Alan Queiroz da Costa, in September 2024, for the thematic section "Brazilian Physical Education and contemporary challenges: responsibilities, commitments and dialogues with media, technologies and digital culture" of Motrivivência Magazine (LaboMidia-UFSC), in an edition associated with GTT 2 - Communication and Media/CBCE.Entrevista concedida por Nelson De Luca Pretto a Alan Queiroz da Costa, en agosto de 2024, para la sección temática "Educación Física brasileña y desafíos contemporáneos: responsabilidades, compromisos y diálogos con los medios, tecnologías y cultura digital" de la Revista Motrivivência (LaboMidia-UFSC), en edición asociada con el GTT 2 - Comunicación y Medios/CBCE.Entrevista concedida por Nelson De Luca Pretto a Alan Queiroz da Costa, em setembro de 2024, para a seção temática “Educação Física brasileira e desafios contemporâneos: responsabilidades, compromissos e diálogos com as mídias, tecnologias e cultura digital” da Revista Motrivivência (LaboMidia-UFSC), em edição associada com o GTT 2 – Comunicação e Mídia/CBCE
Ageing, disability, and the adoption of technology among Italian older adults
No full textAssuming the Senior Technology Acceptance Model as a framework, the objective of this study is to investigate the level of adoption of gerontechnology among the Italian elderly with disabilities, as well as the influence of disability-related factors on the use and attitudes towards technologies. We carried out qualitative research including older people who acquired the disability early in life and people who acquired the disability as they aged and sought to highlight possible differences in their technology adoption strategies. Through narrative analysis, the results indicate that the age of onset of disability seems to mediate both perceptions of usefulness and general attitudes towards gerontechnology, increasing the sense of self-efficacy and decreasing the anxiety resulting from its use. Assuming the Senior Technology Acceptance Model as a framework, the objective of this study is to investigate the level of adoption of gerontechnology among the Italian elderly with disabilities, as well as the influence of disability-related factors on the use and attitudes towards technologies. We carried out qualitative research including older people who acquired the disability early in life and people who acquired the disability as they aged and sought to highlight possible differences in their technology adoption strategies. Through narrative analysis, the results indicate that the age of onset of disability seems to mediate both perceptions of usefulness and general attitudes towards gerontechnology, increasing the sense of self-efficacy and decreasing the anxiety resulting from its use
IPC: Incremental Probabilistic Consensus-based Consistent Set Maximization for SLAM Backends
No full text"La sociologia fenomenologocia di Alfred Schütz"
No full textAnalisi del contributo di A. Schütz alla sociologia fenomenologica della cultura e alla comprensione delle dinamiche della we-relation simbolic
FlexSight - A Flexible and Accurate System for Object Detection and Localization for Industrial Robots
No full textWe present a novel smart camera - the FlexSight C1 - designed to enable an industrial robot to detect and localize several types of objects and parts in an accurate and reliable way. The C1 integrates all the sensors and a powerful mini computer with a complete Operating System running robust 3D reconstruction and object localization algorithms on-board, so it can be directly connected to the robot that is guided directly by the device during the production cycle without any external computers in the loop. In this paper, we describe the FlexSight C1 hardware configuration along with the algorithms designed to face the model based localization problem of textureless objects, namely: (1) an improved version of the PatchMatch Stereo matching algorithm for depth estimation; (2) an object detection pipeline based on deep transfer learning with synthetic data. All the presented algorithms have been tested on publicly available datasets, showing effective results and improved runtime performance
Max Scheler e la sociologia del sapere
No full textNel saggio sono approfonditi le interrelazioni tra società e cultura, il rapporto tra forme di sapere e simboli, il nesso tra persona e socialità nella sociologia del sapere di M. Scheler
HEALTH ASSESSMENT OF FLAT OYSTERS IN NORTHERN ADRIATIC SEA: ONE YEAR MONITORING
No full textHealth monitoring of Ostrea edulis in the Northern Adriatic Sea was conducted as a part of the INTERREG project MARINET, which aims to evaluate the feasibility of an Integrated Multi-Trophic Aquaculture (IMTA) model involving flat oysters and European sea bass. Juvenile flat oysters from Lim Bay (Croatia) were placed in lantern nets near sea bass farms in Duino (Italy). Health assessment were conducted for endemic diseases (Bonamia spp., Marteilia refringens) and other potential pathogens. 40 oysters were sampled every two months over a one-year period and analyzed following EURL protocols (IFREMER).
Histological analysis revealed a widespread presence of parasites referable to Perkinsus genus in oyster samples from Duino. The species was confirmed as Perkinsus mediterraneus by molecular analysis of the internal transcribed spacer (ITS) region of the ribosomal RNA gene complex. Schizonts and trophozoites of P. mediterraneus were observed in the connective tissues of the visceral mass, gonads, gills, labial palps, and mantle, often associated with significant haemocyte infiltration. Its prevalence, assessed by histology, varied during the monitoring period (2.5% - 85%) with a peak observed in October (17.5°C).
In addition to P. mediterraneus, Bonamia exitiosa was detected by real-time PCR from June to October but was not recorded from December to February, with temperatures below 15°C. A co-infection of B. exitiosa and P. mediterraneus was also identified in one specimen. Three oysters (p=1.25%) exhibited disseminated neoplasia. Neoplastic cells, characterized by reduced cytoplasm, enlarged nuclei, and the presence of mitotic figures, were observed in the connective tissues of various organs and in the haemolymph.
This is the first report of P. mediterraneus in Northern Adriatic, with temperature appearing to influence parasite prevalence. The detection of Perkinsus mediterraneus, Bonamia exitiosa and disseminated neoplasia in farmed Ostrea edulis highlights the importance of health monitoring
- …
