H2B2VS (HEVC Hybrid Broadcast Broadband Video Services) – building innovative solutions over hybrid networks

Broadcast and broadband networks continue to be separate worlds in the video consumption business. Some initiatives such as HbbTV have built a bridge between both worlds, but its application is almost limited to providing links over the broadcast channel to content providers’ applications such as Catch-up TV services. When it comes to reality, the user is using either one network or the other. H2B2VS is a Celtic-Plus project aiming at exploiting the potential of real hybrid networks by implementing efficient synchronization mechanisms and using new video coding standard such as High Efficiency Video Coding (HEVC). The goal is to develop successful hybrid network solutions that enable value added services with an optimum bandwidth usage in each network and with clear commercial applications. An example of the potential of this approach is the transmission of Ultra-HD TV by sending the main content over the broadcast channel and the required complementary information over the broadband network. This technology can also be used to improve the life of handicapped persons: Deaf people receive through the broadband network a sign language translation of a programme sent over the broadcast channel; the TV set then displays this translation in an inset window. One of the most important contributions of the project is developing and testing synchronization methods between two different networks that offer unequal qualities of service with significant differences in delay and jitter. In this paper, the main technological project contributions are described, including SHVC, the scalable extension of HEVC and a special focus on the synchronization solution adopted by MPEG and DVB. The paper also presents some of the implemented practical use cases, such as the sign language translation described above, and their performance results so as to evaluate the commercial application of this type of solution

032: Thirty months outcomes after PCI of unprotected left main coronary artery according to the SYNTAX score

AimsTo assess middle term outcomes according to SYNTAX score and rates of delayed surgical/bleeding events after unprotected left main (LM) coronary artery (ULMCA) PCI in an unselected patients population.MethodsConsecutive patients treated by PCI for ULMCA were included among a single center 3508 PCI database within 36 months. Syntax scores were calculated, post discharge extracardiac surgery or hemorrhage were recorded during follow-up as clinical outcomes (Death, TVR, MACCE=cardiovascular death+MI+stroke+TLR).Results102 (3.6%) patients underwent PCI of the LM, including 21 protected LM. Among the 81 patients with PCI of ULMCA, mean age was 65±13, 27% had urgent PCI for AMI or cardiogenic shock, 61% had DES.SYNTAX score was 28±14 in mean and ≤22 in 30 (37%), 23 to 32 in 22 (27%) and ≥33 in 29 (36%) patients.At 30±11 months follow up (98% of the patients), death occurred in 24 patients (30%), TVR in 16 (20%) and MACCE in 35 (43%). Clinical events according to the SYNTAX score are shown in figure. No cardiovascular death occurred in patients with syntax ≤22. MACCE rates were significantly lower when DES were used (24% vs. 64%, p<0.05) and in case of non-urgent PCI (36% vs. 71%, p<0.05).During follow-up, 20 (25%) and 12 (15%) patients underwent unplanned extracardiac surgery and/or hemorrhage, leading to antiplatelet withdrawal in 31% of the cases.ConclusionsIn unselected patients treated by PCI of ULMCA with Syntax score ≤22, outcomes were found to be excellent with no cardiovascular death observed at 30 months. DES and non-urgent PCI were associated with a better prognosis. One patient out of three underwent unplanned extracardiac surgery or hemorrhage during follow up.Figure: 30-months outcomes according to SYNTAX scor

Advances in the treatment of prolactinomas

Prolactinomas account for approximately 40% of all pituitary adenomas and are an important cause of hypogonadism and infertility. The ultimate goal of therapy for prolactinomas is restoration or achievement of eugonadism through the normalization of hyperprolactinemia and control of tumor mass. Medical therapy with dopamine agonists is highly effective in the majority of cases and represents the mainstay of therapy. Recent data indicating successful withdrawal of these agents in a subset of patients challenge the previously held concept that medical therapy is a lifelong requirement. Complicated situations, such as those encountered in resistance to dopamine agonists, pregnancy, and giant or malignant prolactinomas, may require multimodal therapy involving surgery, radiotherapy, or both. Progress in elucidating the mechanisms underlying the pathogenesis of prolactinomas may enable future development of novel molecular therapies for treatment-resistant cases. This review provides a critical analysis of the efficacy and safety of the various modes of therapy available for the treatment of patients with prolactinomas with an emphasis on challenging situations, a discussion of the data regarding withdrawal of medical therapy, and a foreshadowing of novel approaches to therapy that may become available in the future

Towards Declarative 3D in Web Architecture

The recent WebGL integration in major web browser has open the way to many 3D applications as well as high-level libraries targeting 3D content developers. While most of these libraries provide solid grounds for interoperable 3D on web browsers, one might wonder if their use could not be simplified both in terms of processing overhead and 3D description syntax; looking beyond these issues, if there is room for a declarative 3D language for web architecture, its features should be well defined to ensure its success. In this paper, we review some use cases, some existing technologies and some drawback of existing tools in order to derive some requirement for the upcoming declarative 3D language for the HTML ecosystem

Casyopée : un logiciel pour l'analyse en lycée

Cet article présente Casyopée, un environnement logiciel pour les classes de lycée centré sur les fonctions.La problématique générale est celle de l'utilisation par les élèves de lycée de moyens de calcul symbolique sur ordinateur dans le cadre de l'enseignement des mathématiques et les nouvelles perspectives que cette utilisation ouvre.Notre projet consiste à offrir des fonctionnalités de calcul formel que l'élève puisse resituer sans trop de difficultés dans sa pratique mathématique, qui supportent réellement les potentialités d'accès à des démarches liant expérimentation et déduction et qui aident l'élève à organiser son travail.Nous avons choisi comme domaine d'apprentissage l'étude des propriétés des fonctions. Le projet a impliqué la conception :- d'objets symboliques (fonctions, expressions, valeurs, paramètres...) spécifiques à ce domaine- d'une organisation dynamique de ces objets- de gestes de preuve algébrique s'ajoutant aux gestes de calcul symbolique.Dans un premier temps nous présentons les spécificités de l'environnement (étude dynamique de fonctions paramétriques, justifications relatives à l'étude de signe ou de variation) en expliquant nos choix.Dans un deuxième temps nous montrons comment le logiciel a pu être utilisé dans une classe de terminale S, dans le cadre de la recherche d'un problème ouvert (organisation de la séquence, observations, analyse des historiques individuels)

Casyopée : un logiciel pour l'analyse en lycée

Cet article présente Casyopée, un environnement logiciel pour les classes de lycée centré sur les fonctions.La problématique générale est celle de l'utilisation par les élèves de lycée de moyens de calcul symbolique sur ordinateur dans le cadre de l'enseignement des mathématiques et les nouvelles perspectives que cette utilisation ouvre.Notre projet consiste à offrir des fonctionnalités de calcul formel que l'élève puisse resituer sans trop de difficultés dans sa pratique mathématique, qui supportent réellement les potentialités d'accès à des démarches liant expérimentation et déduction et qui aident l'élève à organiser son travail.Nous avons choisi comme domaine d'apprentissage l'étude des propriétés des fonctions. Le projet a impliqué la conception :- d'objets symboliques (fonctions, expressions, valeurs, paramètres...) spécifiques à ce domaine- d'une organisation dynamique de ces objets- de gestes de preuve algébrique s'ajoutant aux gestes de calcul symbolique.Dans un premier temps nous présentons les spécificités de l'environnement (étude dynamique de fonctions paramétriques, justifications relatives à l'étude de signe ou de variation) en expliquant nos choix.Dans un deuxième temps nous montrons comment le logiciel a pu être utilisé dans une classe de terminale S, dans le cadre de la recherche d'un problème ouvert (organisation de la séquence, observations, analyse des historiques individuels)