378 research outputs found
L’informatizzazione e la divulgazione del Catasto Gregoriano e della cartografia storica di Roma
Il progetto d’informatizzazione del Catasto Gregoriano Urbano di Roma è stato avviato circa
dieci anni fa, grazie a un finanziamento della Fondazione Cariplo, ed è ora nella sua fase
conclusiva. Il progetto è stato realizzato dal Dipartimento di Studi Urbani dell’università di
Roma Tre, dall’Archivio di Stato di Roma, dalla Sovrintendenza Capitolina e dall’Archivio
Capitolino e l’attività di ricerca ha permesso di ricostruire l'immagine urbana ed archeologica
della Roma preunitaria e post-unitaria. Le mappe del Catasto Gregoriano e i relativi brogliardi
costituiscono la base del Sistema Informativo Geografico (GIS) al quale sono stati collegati altri
documenti cartografici e documentali: la pianta di Roma di G.B. Nolli del 1748; un consistente
numero di schede relative a documenti di archivio in materia di architettura urbana e
archeologia; documenti iconografici sulla architettura della cittĂ storica. Il progetto intende
conseguire un duplice obiettivo: realizzare un sistema informativo geografico in grado di
contenere, gestire e divulgare i dati sulla cittĂ storica provenienti da fonti diverse; creare uno
strumento web a carattere partecipativo e didattico destinato ad un’ampia platea di utenti e non
solo a ricercatori e studiosi del settore. La piattaforma web e la banca dati geografica sono state
integralmente realizzate con prodotti e software Open Source.The digitization of the Gregorian Urban Cadastre of Rome (Catasto Gregoriano Urbano di
Roma) has started about ten years ago thanks to the funding by the Cariplo Foundation, and it
is now in its final stage. The project has been implemented by the Department of Urban Studies
of the “Roma Tre” University, the Archivio di Stato di Roma, the Sovrintendenza Capitolina and
the Archivio Capitolino. The research has allowed to reconstruct the archaeological and urban
image of Rome in the pre- and post-unification periods. The maps and registers of the
Gregorian Cadastre represent the basis of the Geographic Information System (GIS), which has
been linked to maps and documents from other sources: the 1748 map of Rome by G. B. Nolli,
a substantial number of datasheets from archive documents related to buildings and archeology, other iconographic documents concerning the architecture of the old town. The
project has a dual purpose: on the one hand, the implementation of a GIS able to store, manage
and disseminate data about the historic city from different sources; on the other, the activation
of a participatory and educational web tool open to a wide audience, not only to researchers
and scholars of this particular field. The web platform and the geographic database have been
fully implemented with Open Source products and software.Peer Reviewe
Impact of heart rate on myocardial salvage in timely reperfused patients with STSegment elevation myocardial infarction. new insights from cardiovascular magnetic resonance
BACKGROUND: Previous studies evaluating the progression of the necrotic wave in relation to heart rate were carried out only in animal models of ST-elevated myocardial infarction (STEMI). Aim of the study was to investigate changes of myocardial salvage in relation to different heart rates at hospital admission in timely reperfused patients with STEMI by using cardiovascular magnetic resonance (CMR).
METHODS: One hundred-eighty-seven patients with STEMI successfully and timely treated with primary coronary angioplasty underwent CMR five days after hospital admission. According to the heart rate at presentation, patients were subcategorized into 5 quintiles: <55 bpm (group I, n = 44), 55-64 bpm (group II, n = 35), 65-74 bpm (group III, n = 35), 75-84 bpm (group IV, n = 37), ≥85 bpm (group V, n = 36). Area at risk, infarct size, microvascular obstruction (MVO) and myocardium salvaged index (MSI) were assessed by CMR using standard sequences.
RESULTS: Lower heart rates at presentation were associated with a bigger amount of myocardial salvage after reperfusion. MSI progressively decreased as the heart rates increased (0.54 group I, 0.46 group II, 0.38 group III, 0.34 group IV, 0.32 group V, p<0.001). Stepwise multivariable analysis showed heart rate, peak troponin and the presence of MVO were independent predictor of myocardial salvage. No changes related to heart rate were observed in relation to area at risk and infarct size.
CONCLUSIONS: High heart rates registered before performing coronary angioplasty in timely reperfused patients with STEMI are associated with a reduction in salvaged myocardium. In particular, salvaged myocardium significantly reduced when heart rate at presentation is ≥85 bpm
Cataract surgery in patients with pseudoexfoliation syndrome: Current updates
Pseudoexfoliation is a ubiquitous syndrome of multifactorial origin affecting elderly people by increasing the risk of cataract and secondary glaucoma development. Despite modern techniques and technologies for cataract surgery, pseudoexfoliation syndrome represents a challenge for surgeons because of the increased weakness of the zonular apparatus and limited pupil dilation. Due to the inherent difficulties during surgery, the risk of vitreous loss in these patients is several times higher than in cataract patients without pseudoexfoliation. Using currently available surgical devices (ophthalmic viscosurgical device, iris retractors and ring dilators, capsular tension ring, etc.), the risk of intraoperative complications may be much reduced, allowing the surgeon to handle difficult cases with greater confidence and safety. This review analyzes the methodologic approach to the patient with zonular laxity with the aim of providing useful advices to limit the risks of intraoperative and postoperative complications. From the preoperative planning, to the intraoperative management of the small pupil and phacodonesis, and to the postoperative correction of capsule phimosis and intraocular lens dislocation, a step approach to the surgical management of pseudoexfoliation patients is illustrated
Diagnostic Accuracy of Five Serologic Tests for Strongyloides stercoralis Infection
Background:The diagnosis of Strongyloides stercoralis (S. stercoralis) infection is hampered by the suboptimal sensitivity of fecal-based tests. Serological methods are believed to be more sensitive, although assessing their accuracy is difficult because of the lack of sensitivity of a fecal-based reference ("gold") standard.Methods:The sensitivity and specificity of 5 serologic tests for S. stercoralis (in-house IFAT, NIE-ELISA and NIE-LIPS and the commercially available Bordier-ELISA and IVD-ELISA) were assessed on 399 cryopreserved serum samples. Accuracy was measured using fecal results as the primary reference standard, but also using a composite reference standard (based on a combination of tests).Results:According to the latter standard, the most sensitive test was IFAT, with 94.6% sensitivity (91.2-96.9), followed by IVD-ELISA (92.3%, 87.7-96.9). The most specific test was NIE-LIPS, with specificity 99.6% (98.9-100), followed by IVD-ELISA (97.4%, 95.5-99.3). NIE-LIPS did not cross-react with any of the specimens from subjects with other parasitic infections. NIE-LIPS and the two commercial ELISAs approach 100% specificity at a cut off level that maintains ≥70% sensitivity.Conclusions:NIE-LIPS is the most accurate serologic test for the diagnosis of S. stercoralis infection. IFAT and each of the ELISA tests are sufficiently accurate, above a given cut off, for diagnosis, prevalence studies and inclusion in clinical trials.Fil: Bisoffi, Zeno. Sacro Cuore Hospital; ItaliaFil: Buonfrate, Dora. Sacro Cuore Hospital; ItaliaFil: Sequi, Marco. Istituto Di Ricerche Farmacologiche Mario Negri; ItaliaFil: Mejia, Rojelio. National Institute Of Allergy And Infectious Diseases; Estados UnidosFil: Cimino, RubĂ©n Oscar. Universidad Nacional de Salta. Sede Regional Orán. Instituto de InvestigaciĂłn de Enfermedades Tropicales; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Krolewiecki, Alejandro Javier. Universidad Nacional de Salta. Sede Regional Orán. Instituto de InvestigaciĂłn de Enfermedades Tropicales; Argentina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas; ArgentinaFil: Albonico, Marco. Sacro Cuore Hospital; ItaliaFil: Gobbo, Maria. Sacro Cuore Hospital; ItaliaFil: Bonafini, Stefania. Sacro Cuore Hospital; ItaliaFil: Angheben, Andrea. Sacro Cuore Hospital; ItaliaFil: Requena-Mendez, Ana. Universidad de Barcelona; EspañaFil: Muñoz, JosĂ©. Universidad de Barcelona; EspañaFil: Nutman, Thomas B.. National Institute Of Allergy And Infectious Diseases; Estados Unido
A Genotypic-oriented View of CFTR Genetics Highlights Specific Mutational Patterns Underlying Clinical Macro-categories of Cystic Fibrosis.
Cystic Fibrosis (CF) is a monogenic disease caused by mutations of the Cystic Fibrosis Transmembrane conductance Regulator (CFTR) gene. The genotype-phenotype relationship in this disease is still unclear, and diagnostic, prognostic and therapeutic challenges persist. We enrolled 610 patients with different forms of CF and studied them from a clinical, biochemical, microbiological and genetic point of view. Overall, 125 different mutated alleles (11 of which with novel mutations and 10 of which complex) and 225 genotypes were found. A strong correlation between mutational patterns at the genotypic level and phenotypic macro-categories emerged. This specificity appears to be largely dependent on rare and individual mutations, as well as on the varying prevalence of common alleles in different clinical macro-categories. However, 19 genotypes appeared to underlie different clinical forms of the disease. The dissection of the pathway from the CFTR mutated genotype to the clinical phenotype allowed to identify at least two components of the variability usually found in the genotype - phenotype relationship. One component seems to depend on the genetic variation of CFTR, the other component on the cumulative effect of variations in other genes and cellular pathways independent from CFTR. The experimental dissection of the overall biological CFTR pathway appears to be a powerful approach for a better comprehension of the genotype - phenotype relationship. However, a change from an allele-oriented to a genotypic-oriented view of CFTR genetics is mandatory, as well as a better assessment of sources of variability within the CFTR pathway
The use of digital technologies, impulsivity and psychopathological symptoms in adolescence
Abstract: Background and aims: Past research on the associations between psychopathological symptoms and technological-based addictions, i.e., Internet Gaming Disorder (IGD) and Social Media Addiction (SMA), showed contradictory results in adolescents and adult populations. The present study investigated correlations between adolescents’ psychopathological risks and impulsivity, IGD and SMA. Methods: A sample of 656 participants (338 males; Mage = 16.32 years) was divided into three age groups (early, mid-, and late adolescence) and completed a battery of scales comprising the (i) Internet Gaming Disorder Scale–Short Form, (ii) Bergen Social Media Addiction Scale, (iii) Barratt Impulsiveness Scale for Adolescents, and (iv) Symptom Checklist-90-R. Results: The significance of the correlations was not corroborated in the basic tables. Significant associations appeared only in the adolescent subgroups, sometimes for bivariate and sometimes for partial correlations and with different patterns of associations between males and females. Moreover, both technological addictions were correlated with impulsiveness in bivariate and partial correlations. Discussion and conclusions: Following a developmentally-oriented approach to determine the patterns of associations between technological behavioral addictions and psychopathology in the specific sub-phases of early-, mid- and late-adolescence, this exploratory research showed how these associations might change depending on the developmental phase and gender of the individual. Future research is needed to provide empirical evidence of specific emotional–psychopathological correlations
Electrical Power Subsystem for the Euclid Spacecraft
European Space Agency in the frame of Cosmic Vision 2015-2025 program [ 1 ]. It is a cosmology mission whose prime objective is to study the geometry and the nature of the dark matter and the dark energy with unprecedented accuracy.
The spacecraft will be launched in 2020 by a Soyuz launcher, to perform a six-year survey of the extragalactic sky from a large-amplitude orbit around Lagrange point L2 of the Sun-Earth system.
This paper outlines the Euclid Electrical Power Subsystem (EPS) design, providing a description of the major design drivers and resulting configuration, with a view to highlight aspects that could be considered for future designs
Detecting elderly behavior shift via smart devices and stigmergic receptive fields
Smart devices are increasingly used for health monitoring. We present a novel connectionist architecture to detect elderly behavior shift from data gathered by wearable or ambient sensing technology. Behavior shift is a pattern used in many applications: it may indicate initial signs of disease or deviations in performance. In the proposed architecture, the input samples are aggregated by functional structures called trails. The trailing process is inspired by stigmergy, an insects’ coordination mechanism, and is managed by computational units called Stigmergic Receptive Fields (SRFs), which provide a (dis-)similarity measure between sample streams. This paper presents the architectural view, and summarizes the achievements related to three application case studies, i.e., indoor mobility behavior, sleep behavior, and physical activity behavior
Comparative Analysis of Gene Expression Data Reveals Novel Targets of Senescence-Associated microRNAs
In the last decades, cellular senescence is viewed as a complex mechanism involved in different processes, ranging from tumor suppression to induction of age-related degenerative alterations. Senescence-inducing stimuli are myriad and, recently, we and others have demonstrated the role exerted by microRNAs in the induction and maintenance of senescence, by the identification of a subset of Senescence-Associated microRNAs (SAmiRs) up-regulated during replicative or stress-induced senescence and able to induce a premature senescent phenotype when over-expressed in human primary cells. With the intent to find novel direct targets of two specific SAmiRs, SAmiR-494 and -486-5p, and cellular pathways which they are involved in, we performed a comparative analysis of gene expression profiles available in literature to select genes down-regulated upon replicative senescence of human primary fibroblasts. Among them, we searched for SAmiR’s candidate targets by analyzing with different target prediction algorithms their 3’UTR for the presence of SAmiR-binding sites. The expression profiles of selected candidates have been validated on replicative and stress-induced senescence and the targeting of the 3’UTRs was assessed by luciferase assay. Results allowed us to identify Cell Division Cycle Associated 2 (CDCA2) and Inhibitor of DNA binding/differentiation type 4 (ID4) as novel targets of SAmiR-494 and SAmiR-486-5p, respectively. Furthermore, we demonstrated that the over-expression of CDCA2 in human primary fibroblasts was able to partially counteract etoposide-induced senescence by mitigating the activation of DNA Damage Response
Urban Swarms: A new approach for autonomous waste management
Modern cities are growing ecosystems that face new challenges due to the
increasing population demands. One of the many problems they face nowadays is
waste management, which has become a pressing issue requiring new solutions.
Swarm robotics systems have been attracting an increasing amount of attention
in the past years and they are expected to become one of the main driving
factors for innovation in the field of robotics. The research presented in this
paper explores the feasibility of a swarm robotics system in an urban
environment. By using bio-inspired foraging methods such as multi-place
foraging and stigmergy-based navigation, a swarm of robots is able to improve
the efficiency and autonomy of the urban waste management system in a realistic
scenario. To achieve this, a diverse set of simulation experiments was
conducted using real-world GIS data and implementing different garbage
collection scenarios driven by robot swarms. Results presented in this research
show that the proposed system outperforms current approaches. Moreover, results
not only show the efficiency of our solution, but also give insights about how
to design and customize these systems.Comment: Manuscript accepted for publication in IEEE ICRA 201
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