249 research outputs found
Distanziale da parete per sospensione di lampadina, con funzione aggiunta di contenitore
No full textEnhancing Crowd Flow Prediction in Various Spatial and Temporal Granularities
No full textThe diffusion of the Internet of Things allows nowadays to sense human mobility in great detail, fostering human mobility studies and their applications in various contexts, from traffic management to public security and computational epidemiology. A mobility task that is becoming prominent is crowd flow prediction, i.e., forecasting aggregated incoming and outgoing flows in the locations of a geographic region. Although several deep learning approaches have been proposed to solve this problem, their usage is limited to specific types of spatial tessellations and cannot provide sufficient explanations of their predictions. We propose CrowdNet, a solution to crowd flow prediction based on graph convolutional networks. Compared with state-of-the-art solutions, CrowdNet can be used with regions of irregular shapes and provide meaningful explanations of the predicted crowd flows. We conduct experiments on public data varying the spatio-temporal granularity of crowd flows to show the superiority of our model with respect to existing methods, and we investigate CrowdNet’s reliability to missing or noisy input data. Our model is a step forward in the design of reliable deep learning models to predict and explain human displacements in urban environments
Machine Learning for the Estimation of COD from UV-Vis Spectrometer in Leather Industries Wastewater
No full text- In this paper, we introduce a method for analysing
wastewater from the leather industry with a specific focus on
determining the Chemical Oxygen Demand parameter, which
plays a vital role in evaluating water pollution levels.
Conventional methods for measuring it involve extensive
laboratory analysis, sample preparation, and the usage of
hazardous substances. To overcome these limitations, we
propose a machine learning-based approach that employs
nonspecific sensors and soft sensing techniques to derive
indicators of wastewater quality. Our method leverages
ultraviolet and visible spectroscopy measurements, which
provide valuable insights into the light absorption
characteristics of the wastewater sample, enabling us to
estimate Chemical Oxygen Demand. Importantly, our approach
includes an analysis of the input wavelengths, allowing us to
identify the spectra for accurate Chemical Oxygen Demand
estimation. Once deployed, our method offers the potential for
real-time monitoring systems of wastewater in leather
production contexts, by eliminating the need for time consuming laboratory analys
The diver system: multimedia communication and localization using underwater acoustic networks
No full textThis paper concerns the design and implementation of a novel system for diving operations based on an efficient
underwater acoustic network. The proposed system is composed of both static underwater nodes and divers that are equipped with acoustic modems and underwater tablets. The SUNSET Software Defined Communication Stack (S-SDCS) has been used to provide multi-hop networking capabilities. Novel image compression and transmission modules have been designed and implemented in S-SDCS. In addition, the localization module has been enhanced to increase the safety of the divers whose positions can be locally and remotely monitored. These modules interact with an innovative mobile application running on the underwater tablet thus enabling divers communication and remote position estimation and monitoring. In addition, divers can acquire and share pictures with other operators in real-time. The user interface of the application has been designed according to diver needs and feedback thus making it perfectly suitable for several diving scenarios. The system has been tested in several at-sea campaigns considering different application scenarios. The achieved results confirm that the proposed system is suitable for several diving experiences, enabling novel application scenarios while increasing divers safety
A rising trend of gastric cardia cancer in Gansu Province of China
No full textWe evaluated the incidence, age, gender, and anatomical distribution of gastric cancers in 65,284 cases of upper GI endoscopies. A total of 5253 gastric cancer cases were identified. Cancers of the cardia, fundus, body and antrum account for 33.6%, 2.7%, 23.6% and 34.0% of all cases, respectively. The mean age for gastric cancers was 56.9 ± 10.2 years and 69.7% of the cancer cases were found in the 50-69 year age group. Subjects with cardia cancer were slightly older than subjects with non-cardia cancer. Over the 12-year period, the incidence of the gastric antrum cancer had significantly declined, whereas the incidence of the gastric cancer in the cardia and body had risen steadily. Thus, there was a rising trend of cardia cancers and a decreasing trend of most non-cardia cancers. © 2008 Elsevier Ireland Ltd. All rights reserved.link_to_subscribed_fulltex
Giornalista, promotore culturale, editore: dalla Rai a 'Rinascita Sarda'
No full textUna parte importante della vita di Umberto Cardia è legata alla professione di giornalista.
Una professione dalla quale non si allontanerà mai, neppure nelle fasi più intense del suo impegno politico, al quale affiancherà la direzione di «Rinascita Sarda», il periodico del comitato regionale del PCI sardo
Rhagovelia cardia Padilla-Gil 2011
No full textRhagovelia cardia Padilla-Gil, 2011 (Figs. 5F, 6F, 7F, 8F, 19J, 20J, 25A) Rhagovelia cardia Padilla-Gil, 2011: 207. Rhagovelia carina Padilla-Gil, 2015: 77 (new synonym). Holotype apterous male. BL 3.87; HL 0.41; HW 1.00; INT 0.35; ANT I 1.35, ANT II 0.75, ANT III 0.85, ANT IV 0.95; EYE 0.37; PL 0.21; PW 1.23; FORELEG: FEM 1.65; TIB 1.75; TAR I 0.06; TAR II 0.04; TAR III 0.38; MIDLEG: FEM 2.80; TIB 1.80; TAR I 0.10; TAR II 1.05; TAR III 1.00; HINDLEG: FEM 2.35; TIB 2.15; TAR I 0.12; TAR II 0.16; TAR III 0.42. Head dorsally black, covered with golden pubescence; longitudinal midline and a pair of oblique indentations at base impressed and shiny. Venter of head black. Buccula brown. Labium brown. Eye dark red. Antenniferous tubercle brown. Base of antennomere I yellow; most of I and rest of antenna brown. Pronotum dark orange between eyes behind vertex of head, dark brown laterally and posteriorly. Meso- and metanota black, covered by golden pubescence. Propleuron with small yellow macula; meso- and metapleura black, covered with greyish pubescence. Pro-, meso- and metasterna black, covered with greyish pubescence. Proacetabulum black with yellow ventral spot. Mesoacetabulum black. Metacetabulum black with yellow margins. Fore and hind coxae yellow. Middle coxa black. Fore and hind trochanters black with brown macula. Middle trochanter black. Femora, tibiae and tarsi black. Abdominal mediotergites black, covered with golden pubescence; VII with a central shiny black spot; tergum VIII shiny black, covered with short golden setae. Abdominal laterotergites black, covered with golden pubescence, with lateral margins shiny black. Abdominal sterna black, covered with greyish and golden pubescence, except for VII with a shiny black mark and slightly marked median carina. Head short, covered with short setae; frons with longer setae. Antenna covered with short brown setae, denser on antennomere IV; antennomere I with at least six longer, thick brown setae; II with two of these setae near middle. Antennomeres I– III cylindrical; IV fusiform; I and IV subequal in width at the middle; II subequal in width to III, slightly thinner than I and IV. Labium short. Ocular setae present. Pronotum short, not covering mesonotum, covered with short golden setae, denser laterally; posterior margin slightly concave. Mesonotum covered with short golden setae, denser on the posterior margin; posterior margin convex centrally. Metanotum short; posterior margin straight centrally. Sides of thorax with long brown setae. Legs covered with short golden setae, with rows of longer, thicker setae on femora and tibiae. Trochanters without spines. Fore tibia slightly curved distally, with weak preapical depression; grasping comb extending slightly beyond apex. Hind femur distinctly surpassing apex of abdomen, slightly wider than middle femur, with posterior margin sinuous; distal half with a row of about 14–16 spines decreasing in size towards apex. Hind tibia slightly curved, with 22–23 subequal short denticles, apex with straight spur. Abdominal mediotergites subrectangular. Abdominal laterotergites raised, but not vertical, with short golden setae. Abdominal sterna covered with short golden setae, without black denticles, with weak median carina on segments VII–VIII. Proctiger subtriangular, basal lobes rounded, strong, short; apex rounded, densely covered with setae. Paramere elongated, subtriangular, curved and rounded at the edges, with thick setae at apex. Paratype apterous female. BL 4.38; HL 0.50; HW 1.05; INT 0.34; ANT I 1.35, ANT II 0.73, ANT III 0.83, ANT IV 0.60; EYE 0.50; PL 0.25; PW 1.20; FORELEG: FEM 1.65; TIB 1.68; TAR I 0.06; TAR II 0.04; TAR III 0.38; MIDLEG: FEM 2.88; TIB 1.75; TAR I 0.10; TAR II 1.05; TAR III 1.00; HINDLEG: FEM 2.35; TIB 2.20; TAR I 0.08; TAR II 0.22; TAR III 0.42. Similar to apterous male in structure and color. Hind femur relatively shorter and less sinuous than in male, with about 6–8 spines on distal half. Shiny black central spot on dorsum of abdominal segments VI –VIII. Abdominal sterna without carina; VII with shiny brown mark. Comments. When describing R. carina, Padilla-Gil (2015) compared it with R. cardia and R. espriella (= R. rosensis, new synonym). According to this author, R. carina could be distinguished from R. cardia by the absence of a heart-shaped shiny black spot on the mesonotum (present in the latter), the male hind femur 7.3 times as long as wide (7.6 in the latter), and by the shape of the paramere. The mesonotum of the types of R. cardia deposited in the ICN is slightly more bare and reflective than in most Colombian species of the angustipes complex, but a heartshaped shiny black spot could not be observed. Evident shiny black mesonotal areas, similar to those that commonly occur on the abdominal mediotergites of species of the complex, are found, for example, in R. calopa (Fig. 5E) and R. sabrina Drake, 1958, but not in R. cardia. The mentioned difference in the length / width ratio of the male hind femur between R. carina and R. cardia (ca. 4%) is very small and can be regarded as intraspecific variation. The development of the hind femur in male Rhagovelia is related to sexual selection and can be quite variable in a single species, with more extreme cases occurring in the collaris and robusta complexes (Crumiére et al. 2019, Magalhães 2019). The differences in paramere shape between R. carina and R. cardia (compare Padilla-Gil 2015: Fig. 30 and Fig. 31) are due to innapropriate preparation of the drawings. The actual paramere of R. cardia (Fig. 19J) is more similar to that drawn for R. carina by Padilla-Gil (2015: Fig. 30). Considering that these differences are either misinterpretations or of minor importance for species discrimination in the angustipes complex, and that no other major differences have been found between the types of both species, we propose the synonymy between R. carina and R. cardia. As can be seen below, both were described from the same area in southern Colombia. Distribution. Colombia: Cauca (Padilla-Gil 2019b, Padilla-Gil 2020), Nariño (Padilla-Gil 2011, Padilla-Gil 2015), Tolima (Parra-Trujillo et al. 2014) (Fig. 25A). Type material examined. Holotype ♂ apterous of R. cardia (ICN 054104): ‘ Colombia \ Nariño \ municipio de Barbacoas \ Altaquer \ río Ñambi \ 16.V.2008 \ Col: G. Montenegro’. Paratype ♀ apterous of R. cardia (ICN 054105): same data as holotype. Holotype ♂ apterous of R. carina (ICN): ‘ Colombia \ Nariño \ Altaquer \ Reserva Natural Río Ñambi \ 2010-IV-29 \ Col: D. N. Padilla’. Paratypes of R. carina, 6 ♂ apterous, 7 ♀ apterous, 1 ♀ macropterous (ICN): same data as holotype.Published as part of Galindo-Malagón, Ximena Alejandra, Morales, Irina & Moreira, Felipe Ferraz Figueiredo, 2021, Revision of the Rhagovelia angustipes complex (Insecta: Hemiptera: Veliidae from Colombia, pp. 167-225 in Zootaxa 4958 (1) on pages 188-189, DOI: 10.11646/zootaxa.4958.1.11, http://zenodo.org/record/469151
Hungarian October: Between Red Cross and Red Flag. The 1956 Action of the International Committee of the Red Cross
No full textOn the basis of the archives of the International Committee of the Red Cross, Isabelle Vonèche Cardia analyses the action taken by the humanitarian organization during the events in Hungary in 1956 and subsequently into the 1960s. The author brings out a little-known dual aspect of East-West relations in the Cold War period: how on the one hand an uncompromising political system took advantage of everything that "bourgeois humanism" could offer, while on the other hand the ICRC, aware that it was being used, allowed itself to adapt to the realities of the Communist world in the hope of gaining access one day to political detainees on the other side of the Iron Curtain. This example represents a type of ICRC operation which was later repeated in Vietnam, Afghanistan, Cambodia and, by analogy, in the context of other totalitarian regimes.SCI-STI-D
Long-term follow-up of custom-made porous hydroxyapatite cranioplasty in adult patients: a multicenter European study. Can we trust self-reported complications?
No full textBackgroundCranioplasty is a surgical intervention aiming to re-establish the integrity of skull defects. Autologous bone and different heterologous materials are used for this purpose, with various reported related complications. The aim of the study was to evaluate the complication rate in a multicentric cohort of patients underwent porous hydroxyapatite (PHA) cranioplasty implantation and to assess the validity of company post-market clinical analysis.MethodsAuthors analyzed a company based register of 6279 PHA cranioplasty implanted all over the world. In these adult patients only self-reported complications were available. We then obtained the data of adult patients treated with custom-made porous HA prostheses (CustomBone Service) in 20 institutions from different European countries through an on-site interview with the physicians in charge of the patients (494 patients). The endpoints were the incidence of adverse events and of related implant removal.ResultsThe groups of patients had similar demographics characteristics. The average follow-up was 26.7 months. A significantly higher number of complications was recorded in the group of patients underwent onsite interview. Thirty-nine complications were reported (7.89%) with an explantation rate of 4.25% (21 cases) in the series, compared to the data reported from the Company (complications rate of 3.3% and explantation rate of 3.1%). The most common complications were infection (4.86%), hematomas (1.22%), fractures (1.01%), mobilization (0.4%) and scar retraction (0.4%).ConclusionsOur data confirm that porous HA cranioplasty is at least as effective as other heterologous materials to repair cranial defects. Another interesting finding is that self-reporting complicantions by surgeons does not give a precise picture of the real rate of complications of the devices. These data in future studies need to be re-confirmed with on-site interviews
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