Search results for "CSC"
showing 10 items of 192 documents
Segmentation Integrating Texture and Shape A Priori Applied to Cardiac MR Images
2017
International audience; Cardiovascular diseases are the first cause of death worldwide. Early and accurate diagnosisof cardiovascular diseases plays an important role in improving life of population afflicted heartdiseases. Delayed Enhencement Magnetic Resonance Imaging (DE-MRI) is a highly valuablebut non-specific imaging technique that is ancillary in the diagnosis of a variety of myocardialdiseases. This papper presents a novel segmentation technique of DE-MRI based on watershedand region growing algorithm with application of myocardium shape.
Supporting Inter-Agency Collaboration in Emergency Management: Recurring Challenges Relevant for CSCW
2023
Emergency management requires effective collaboration between different agencies. This work implies several challenges due to a heterogeneous mix of actors with different procedures, practices, and support tools. Despite being focused in various research streams, emergency responders still report challenges with sharing information and establishing shared situational awareness in responding to complex events. The paper presents results from a large-scale digital tabletop exercise that illustrate recurring challenges related to support for collaborative procedures, a communication network structure combining several media, use of geocollaborative tools, and configuration of collaborative env…
Contribution of Multi-Agent Systems and Fuzzy logic to support tutors in Learning Communities
2016
The growing importance of online training has put emphasis on the role of remote tutoring. A whole new area of research, dedicated to environment for human learning (EHL), is emerging. We are concerned with this field. More specifically, we will focus on the monitoring of learners.The instrumentation and observation of learners activities by exploiting interaction traces in the EHL and the development of indicators can help tutors to monitor activities of learners and support them in their collaborative learning process. Indeed, in a learning situation, the teacher needs to observe the behavior of learners in order to build an idea about their involvement, preferences and learning styles so…
Early cardiovascular events in women with a history of gestational diabetes mellitus
2016
International audience; Background: The effect of gestational diabetes mellitus (GDM) on cardiovascular diseases (CVD) is not assessed within the first 10 years postpartum, regardless of subsequent diabetes. The aim of this study was to determine the risk of CVD events related to GDM within 7 years of postpartum.Methods: This nationwide population-based study of deliveries in 2007 and 2008 with a follow-up of 7 years was based on data from the French medico-administrative database. Two groups were formed: women with a history of GDM and women without GDM or previous diabetes. CVD included angina pectoris, myocardial infarction, stroke, heart bypass surgery, coronary angioplasty, carotid end…
Sosiaalinen media ja verkko-opiskelu
2010
Koskelainen, Tiina Elina Tietojärjestelmätieteen kandidaatintutkielma / Tiina Koskelainen Jyväskylä: Jyväskylän yliopisto, 2009, 39 s. Kandidaatintutkielma Tässä tutkimuksessa kartoitetaan sosiaalisen median ominaispiirteitä sekä oppimisen ja verkko-opiskelun käsitteitä. Lisäksi tutkitaan millaisia vaikutuksia sosiaalisen median käytöllä on verkko-opiskeluun. Tutkimus on toteutettu kirjallisuuskatsauksena. Tieto- ja viestintäteknologian nopea kehitys, vuorovaikutukseen perustuvat kommunikointitavat sekä sosiaaliset sovellukset ovat lisänneet yhteisöllisyyttä ja mahdollistaneet sosiaalisen median kehittymisen. Käyttäjälähtöisyys, verkostoituminen ja uudet kommunikointitavat ovat muuttaneet …
Relationship between complex fractionated atrial electrogram patterns and different heart substrate configurations
2012
International audience; Complex Fractionated Atrial Electrograms (CFAE) were identified as being symptomatic of reentrant activities. Signals recorded by an intracardiac catheter give an imprecise vision of the underlying phenomena that occur in the proarrhythmic substrate. In this study, phenomenological and ionic numerical models were used to simulate a small piece of the atrium substrate. The catheter measurement is also simulated numerically to take into account electrode particularities. Modifications were applied on the numerical substrate. Then stimulation scenarios were generated in the numerical substrate such as planar waves, stable or breaking spirals. Comparison between simulate…
Towards human exploration of space: the THESEUS review series on cardiovascular, respiratory, and renal research priorities
2016
International audience; The THESEUS project (Towards Human Exploration of Space: aEUropean Strategy) was initiated within the seventh FrameworkProgramme by the European Commission. This project aimed toprovide a cross-cutting, life science-based roadmap for Europe’sstrategy towards human exploration of space, especially for deepspace missions and its relevance to applications on Earth. Toaddress these challenges, relevance of space research on thecardiovascular system, the lungs and kidneys, was discussed in anexpert group and its principal conclusions will be presented in thisarticle.
Improved estimation of the left ventricular ejection fraction using a combination of independent automated segmentation results in cardiovascular mag…
2014
—This work aimed at combining different segmenta-tion approaches to produce a robust and accurate segmentation result. Three to five segmentation results of the left ventricle were combined using the STAPLE algorithm and the reliability of the resulting segmentation was evaluated in comparison with the result of each individual segmentation method. This comparison was performed using a supervised approach based on a reference method. Then, we used an unsupervised statistical evaluation, the extended Regression Without Truth (eRWT) that ranks different methods according to their accuracy in estimating a specific biomarker in a population. The segmentation accuracy was evaluated by focusing o…
Soins ambulatoires et facteurs associés à la réhospitalisation précoce des sujets âgés (65+) après un infarctus du myocarde : étude observationnelle …
2017
Etat de la question Les rehospitalisations precoces (RHP), dans les 30 jours suivant la sortie d’hospitalisation, sont frequentes chez les sujets âges, notamment apres un infarctus du myocarde (IDM). Elles augmentent la morbi-mortalite et les depenses de sante. Il a ete demontre qu’une meilleure organisation de la sortie d’hospitalisation reduit significativement le risque de RHP. Neanmoins, il n’existe aucune recommandation sur le suivi ambulatoire en sortie d’hospitalisation. L’objectif de l’etude etait d’analyser les soins ambulatoires post-hospitaliers et les facteurs associes a la RHP des sujets âges apres un IDM. Materiel et methodes Etude observationnelle retrospective a partir des d…
Lipoproteins and lipid metabolism: HDL. Small, dense HDL display potent vasorelaxing activity, reflecting their elevated content of S1P
2016
International audience