A Survey on Service Composition Middleware in Pervasive Environments

The development of pervasive computing has put the light on a challenging problem: how to dynamically compose services in heterogeneous and highly changing environments? We propose a survey that defines the service composition as a sequence of four steps: the translation, the generation, the evaluation, and finally the execution. With this powerful and simple model we describe the major service composition middleware. Then, a classification of these service composition middleware according to pervasive requirements - interoperability, discoverability, adaptability, context awareness, QoS management, security, spontaneous management, and autonomous management - is given. The classification highlights what has been done and what remains to do to develop the service composition in pervasive environments

A Pitfall in the Diagnosis of Unresectable Liver Metastases: Multiple Bile Duct Hamartomas (von Meyenburg Complexes)

Von Meyenburg complexes (VMC) are a cluster of benign liver malformations including biliary cystic lesions, with congenital fibrocollagenous stroma. This rare entity can mimick multiple secondary hepatic lesions. We report a case of a 56-year-old woman who had multiples liver lesions 12 years after operation for breast cancer. Biopsy of the hepatic lesion confirmed the diagnosis of VMC. Preoperative discovery of multiple gray-white nodular lesions scattered on the surface of the liver should not always contraindicate curative liver resection. The diagnosis of VMC should be known and confirmed with liver biopsy

Resurrection: A Platform for Spontaneously Generating and Managing Proximity Documents

Abstract | Ubiquitous technology raises the challenges inherent to the users mobility. A user may hold on his mobile device his usual documents, and may be able to handle them without the existence of editing softwares. In this article, we aim to reach two goals: (i) handling documents without necessarily using speci c softwares and (ii) automatically and spontaneously generating those documents. For that purpose, we rely on service-oriented programming paradigms, especially services deployment and composition capabilities. We propose a platform, called Resurrection, where we consider documents as services incorporating their own handling functions and able to be deployed and executed over a pervasive environment. Our system starts an automatic and spontaneous services documents generation in case of environment proximity. This generation proceeds to documents contents aggregation. We implement our platform using OSGi and UPnP frameworks

Applications in a Mobile Environment

jlemouel @ irisa.fr Abstract tation power, available memory, storage capabilities, Mqbile computing is a domain in great expansion. Wireless *tworks and Portable Information Appliances (PIAs) are d~veloping very rapidly. More and more mobile users woulJ like to perform their multimedia applications with the samef acility as on their desktop station. Use of such applica.ons in a mobile environment raises new challenges. Thes applications are interactive and extremely costly in syste and network resources, whereas PIAs resources are poor 4Znd wireless networks offer a very variable quality of connl:!ction. In this pape1; we propose an adaptive and dynamid distribution of applications on the local environment to ov4rcome the poorness of available resources on PIAs, and tq reduce and regulate variability effects. I

Improvement of the QoS via an Adaptive and Dynamic Distribution of Applications in a Mobile Environment

Mobile computing is a domain in great expansion. Wireless networks and Portable Information Appliances (PIAs) are developing very rapidly. More and more mobile users would like to perform their multimedia applications with the same facility as on their desktop station. Use of such applications in a mobile environment raises new challenges. These applications are interactive and extremely costly in system and network resources, whereas PIAs resources are poor and wireless networks offer a very variable quality of connection. In this paper, we propose an adaptive and dynamic distribution of applications on the local environment to overcome the poorness of available resources on PIAs, and to reduce and regulate variability effects

Scalable Architectures to Support Sustainable Advanced Information Technologies

International audienc

Safety of endoscopic retrograde cholangiopancreatography in the pediatric population: a multicenter study

INTRODUCTION: The aims of this retrospective multicenter study were to assess the technical success and adverse events of endoscopic retrograde cholangiopancreatography (ERCP) procedures in children in French and Belgian centers. METHODS: All children aged 1 day to 17 years who underwent ERCP between January 2008 and March 2019 in 15 tertiary care hospitals were retrospectively included. RESULTS: 271 children underwent 470 ERCP procedures. Clinical long-term follow-up was available for 72 % of our patients (340/470 procedures). The median age at intervention was 10.9 years. ERCP was therapeutic in 90 % (423/470) and diagnostic in cases of neonatal cholestasis in 10 % of the patients. The most common biliary indication was choledocholithiasis; the most common pancreatic indication was chronic pancreatitis. Biliary cannulation was successful in 92 % of cases (270/294); pancreatic cannulation in 96 % of cases (169/176); and planned therapeutic procedures in 92 % of cases (388/423). The overall complication rate was 19 % (65/340). The most common complication was post-ERCP pancreatitis (PEP) in 12 % of cases (40/340) and sepsis in 5 % (18/340). On univariate analyses, pancreatic stent removal was protective against PEP (odds ratio [OR] 0.1, 95 % confidence interval [CI] 0.01 - 0.75; P = 0.03), and sepsis was associated with history of liver transplantation (OR 7.27, 95 %CI 1.7 - 31.05; P = 0.01). Five patients had post-ERCP hemorrhage and two had intestinal perforation. All complications were managed with supportive medical care. There was no procedure-related mortality. CONCLUSION: Our cohort demonstrates that ERCP can be performed safely with high success rates in many pancreaticobiliary diseases of children. The rate of adverse events was similar to that in previous reports