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DTSTART;TZID=Europe/Paris:20191205T133000
DTEND;TZID=Europe/Paris:20191205T150000
DTSTAMP:20191122T090750Z
CREATED:20191122T090232Z
LAST-MODIFIED:20191122T090750Z
UID:8654-1575552600-1575558000@www.loria.fr
SUMMARY:Séminaire SSL : Emmanuelle Anceaume
DESCRIPTION:Emmanuelle Anceaume (CNRS\, équipe CIDRE\, IRISA) présentera ses travaux de recherche le jeudi 5 décembre à 13h30\, salle A008 dans le cadre du séminaire SSL. \nTitle: Abstractions for permissionless distributed systems \nAbstract: \nPermissionless distributed systems are distributed systems in which (i) the number of participants for carrying out the protocol is not known before hand\, and is not even known during the course of the execution\, (ii) the right to contribute (e.g.\, by proposing a new value of interest for the other participants) and to participate (e.g.\, by reading new decided values) is not controlled by a (trustworthy) third authority\, and (iii) participants communicate over a weakly connected communication topology (such as a peer-to-peer network). The permissionless blockchain technology exactly complies with such features.  During this presentation I will present some of the most important abstractions that allow to support the construction of such distributed systems. \nLa totalité du programme du séminaire SSL est disponible sur la page web : http://seminaire-securite.loria.fr/
URL:https://www.loria.fr/event/seminaire-ssl-emmanuelle-anceaume/
CATEGORIES:Séminaire
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20191209T103000
DTEND;TZID=Europe/Paris:20191209T113000
DTSTAMP:20191203T132428Z
CREATED:20191203T132300Z
LAST-MODIFIED:20191203T132428Z
UID:8727-1575887400-1575891000@www.loria.fr
SUMMARY:D3 seminar by Gabriele Castellano
DESCRIPTION:D3 seminar by Gabriele Castellano from Politecnico di Torino. \nTitle: « On the Orchestration of Dynamic Services over Distributed IT Infrastructures » \n  \nAbstract: \nEdge Computing is moving resources toward the network borders\, thus enabling the deployment of a pool of novel applications that benefit from the new distributed infrastructure. However\, due to the heterogeneity of such applications\, specific orchestration strategies need to be adopted for each deployment request. Each application can potentially require different optimization criteria and may prefer particular reactions upon the occurrence of the same event. This work proposes a Service-Defined approach for orchestrating cloud/edge services in a distributed fashion\, where each application can define its own orchestration strategy by means of declarative statements\, which are parsed into a Service-Defined Orchestrator (SDO).\nMoreover\, to coordinate the coexistence of a variety of SDOs on the same infrastructure while preserving the resource assignment optimality\, a fully Distributed Resources AssiGnment and OrchestratioN algorithm (DRAGON) is proposed\, which seeks optimal partitioning of shared resources between different actors.\nThe advantages of the Service-Defined orchestration approach have been evaluated over some representative edge use cases\, and convergence and performance properties of DRAGON have been measured on a prototype implementation\, assessing the benefits compared to conventional orchestration approaches. \n  \nBio: \nGabriele Castellano is a Ph.D. student from Politecnico di Torino\, where he received his Master’s degree in Computer Engineering in 2016. His research interests include service virtualization\, resource orchestration\, distributed optimization\, and software-defined networking. In 2017-2018\, he has been a research fellow at Saint Louis University\, where he worked on distributed algorithms for edge resource allocation. He is currently pursuing an internship at Telefonica I+D (Barcelona)\, on orchestrating Machine Learning based inference tasks at the edge of the network. \n 
URL:https://www.loria.fr/event/d3-seminar-by-gabriele-castellano/
CATEGORIES:Séminaire
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BEGIN:VEVENT
DTSTART;TZID=Europe/Paris:20191219T110000
DTEND;TZID=Europe/Paris:20191219T120000
DTSTAMP:20191206T091831Z
CREATED:20191206T091810Z
LAST-MODIFIED:20191206T091831Z
UID:8736-1576753200-1576756800@www.loria.fr
SUMMARY:CAPSID Seminar by Juan Cortés
DESCRIPTION:Seminar by Juan Cortés\, LAAS-CNRS\, Toulouse\, France \nTitle: Several stories about tripeptides: basic components for modeling flexible protein structures \nSummary:\nFrom a mechanical point of view\, fragments of three consecutive amino acid residues (called tripeptides hereafter) are very interesting elements of polypeptide chains. Indeed\, if we consider the bond torsion angles as the main degrees of freedom\, the 6 angles in a tripeptide (3 pairs of phi-psi angles\, neglecting the variation of omega angles) are the minimal number allowing full relative mobility of the two ends of the chain. Besides\, using techniques originating from robotics\, the angle values corresponding to a given pose of the two ends the can be obtained very efficiently. This property has been exploited over decades within conformational sampling methods applied to cyclic peptides or protein loops. It can also be used to enhance conformational sampling of globular proteins using Monte Carlo methods\, or to conceive sophisticated algorithms for modeling large-amplitude conformational transitions. In the first part of my presentation\, I will briefly talk about all these applications. \nTripeptides are also interesting elements from a structural point of view. They are minimalistic fragments capturing local\, sequence-dependent structural preferences of proteins. To encode and to analyze these structural properties\, we have constructed an exhaustive database to tripeptide conformations extracted from experimentally-determined high-resolution protein structures. In the second part of the talk\, I will show how this database can be used to construct realistic models of intrinsically disordered proteins (IDPs) and to predict the propensity of some regions to form secondary structure elements. \n 
URL:https://www.loria.fr/event/capsid-seminar-by-juan-cortes/
CATEGORIES:Séminaire
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