97 research outputs found
Happy 25th Anniversary DDM! ... But How Fast Can the Schwarz Method Solve Your Logo?
No full text“Vous n’avez vraiment rien à faire”!1 This was the smiling reaction of Laurence Halpern when the first author told her about our wish to accurately estimate the convergence rate of the Schwarz method for the solution of the ddm logo2, see Figure 1 (left)
TeamWorker: An agent-based support system for mobile task execution
No full textTraditional workflow management systems are considered insufficiently flexible to support autonomous job management via close team working. This paper proposes a multi-agent system approach to enhancing existing workflow management systems to enable team-based job management in the field of telecommunications service provision and maintenance. This paper adopts a component-based approach and explains how applications can be developed by customising the generic components provided by a multi-agent systems framework
Make every show like it's your last
No full textCurator : Xavier Franceschi
The FRAC Ile-de-France/Le Plateau is presenting Make Every Show Like It’s Your Last, the first solo exhibition of the British artist Ryan Gander in a Paris institution.
Making the most of an extremely effusive imagination, Ryan Gander does his utmost to offer us works—using any type of different media—which tend to re-visit the conceptual art arena, not without wit.
Proposing wind at the Kassel Documenta, producing a remake of one of the key scenes in Julian Schnabel’s biopic about Jean-Michel Basquiat, presenting sealed boxes whose contents are seemingly described by texts on the wall, associating images, captions and comments in a discursive style…, art—and in particular that art whose favorite subject is art itself—is, for him, a huge playground where the right thing to do is to redefine constantly the rules in order to play new games.
In this context, the basic author/work/viewer triptych does indeed represent the point of departure of works aiming precisely, in this reflexive manner, at experiencing all its motives.
As an author, Ryan Gander regularly appears in his works. When self-portraits are not involved—proposed without the slightest complacency, and very often borrowings of self-mockery--, he gives us a raft of biographical data like so many elements informing what is being presented to us. But over and above this autobiographical form, which does not shrink from tipping over into a certain romanticism, it is above all to his thought processes that he invites us.
With Ryan Gander, the work usually appears like a form of enigma to be solved. However, far from a simple solution to be found, it is indeed the status of the work, its role, which it is a matter of revisiting: as it happens, the real “exhibits” proposed to us by the artist are to be seen as such, but also as the vehicles of a narrative, as the agents—confused and active at once—of a way of thinking that is deliberately on the move.
As for the viewer, we might say, unafraid, that he is the essential factor in the arrangement. Everything is addressed to him, and it is through his presence that the whole approach is justified. Everything is done for his perception to be called upon, his attention attracted, and his intelligence stimulated.
At Le Plateau, among the very latest works produced which will each tend to be incorporated in these three perspectives---makeshift shelters made by the artist’s child that have become marble sculptures, a parallelepiped in darkness with an undefined function, a pair of eyes in the wall reacting to the visitor’s slightest movement…--, there is one that clearly responds to this latter objective: a so-called advertising campaign organized by the British Ministry of Health aimed at encouraging imagination among the populace…
Xavier Francesch
Ecto-ATPase CD39 Inactivates Isoprenoid-Derived Vγ9Vδ2 T Cell Phosphoantigens
No full textSummaryIn humans, Vγ9Vδ2 T cells respond to self and pathogen-associated, diphosphate-containing isoprenoids, also known as phosphoantigens (pAgs). However, activation and homeostasis of Vγ9Vδ2 T cells remain incompletely understood. Here, we show that pAgs induced expression of the ecto-ATPase CD39, which, however, not only hydrolyzed ATP but also abrogated the γδ T cell receptor (TCR) agonistic activity of self and microbial pAgs (C5 to C15). Only mevalonate-derived geranylgeranyl diphosphate (GGPP, C20) resisted CD39-mediated hydrolysis and acted as a regulator of CD39 expression and activity. GGPP enhanced macrophage differentiation in response to the tissue stress cytokine interleukin-15. In addition, GGPP-imprinted macrophage-like cells displayed increased capacity to produce IL-1β as well as the chemokine CCL2 and preferentially activated CD161-expressing CD4+ T cells in an innate-like manner. Our studies reveal a previously unrecognized immunoregulatory function of CD39 and highlight a particular role of GGPP among pAgs
The glory of Her sacred Majesty Queen Anne, in the royal navy, and her absolute sovereignty as empress of the sea, asserted and vindicated. Also a treatise of navigation and commerce: with some remarks of the Royal hospital at Greenwich; and improving the woollen manufactury [!]
No full textDedication signed: Joseph Gander.Mode of access: Internet
Optimized Schwarz algorithms in the framework of DDFV schemes
No full textInternational audienceOver the last five years, classical and optimized Schwarz methods have been developed for anisotropic elliptic problems discretized with Discrete Duality Finite Volume (DDFV) schemes. Like for Discontinuous Galerkin methods (DG), it is not a priori clear how to appropriately discretize transmission conditions with DDFV, and numerical experiments have shown that very different scalings both for the optimized parameters and the contraction rates of the Schwarz algorithms can be obtained, depending on the discretization. We explain in this article how the DDFV discretization can influence the performance of the Schwarz algorithms, and also propose and study a new DDFV discretization technique for the transmission conditions which leads to the expected convergence rate of the Schwarz algorithms obtained from an analysis at the continuous level
Tlos, Oinoanda and the Hittite Invasion of the Lukka lands. Some Thoughts on the History of North-Western Lycia in the Late Bronze and Iron Ages
No full textThe present article contains observations on the invasion of Lycia by the Hittite king Tudhaliya IV as described in the Yalburt inscription. The author questions the commonly found identification of the land of vitis/Wiyanwanda with the city of Oinoanda on account of the problems raised by the reading of the sign vitis as well as of archaeological and strategical observations. With the aid of Lycian and Greek inscriptions the author argues that the original Wiyanawanda/Oinoanda was located further south than the city commonly known as Oinoanda situated above İncealiler. These insights lead to a reassessment of the Hittite-Luwian sources concerning the conquest of Lyci
Design = Art?
No full textCoinciding with Ikon's new exhibitions, this panel discussion considers a range of topics surrounding the relationship between art practice and design: authenticity, replication, production, authorship and collaboration.
Speakers include Alex Coles, author of DesignArt (2005), artists Martin Boyce and Ryan Gander and Ikon Curator Nigel Prince
Reisetagebuch eines Phänomenologen : aus den Jahren 1978 – 2019
No full textDas Reisetagebuch geht zurück auf weltweite Forschungs- und Lehrkontakte. Die Geschichte der phänomenologischen Bewegung wird ergänzt durch eine globale Geographie. Interkulturelle Bezüge erstrecken sich auf Philosophie, Wissenschaft, Kunst, Religion und Alltagsleben. Bekannte Namen tauchen auf wie Boulez, Derrida, Levinas, Ricœur oder Patočka. Autoren wie Joyce, Kafka, Proust und Kierkegaard zeigen sich in ihrem städtischen Umfeld. Streifzüge führen durch das schwarze Harlem. Spuren von Krieg und Gewalt begegnen uns auf den Straßen von Sarajevo oder Bogotà sowie an Gedenkorten in Auschwitz, Kaunas oder Kiew. Die Ränder Europas melden sich in Istanbul, Tbilissi, Tunis und Jerusalem. Der Autor ist ein international bekannter Phänomenologe.The travel diary has its origin in world-wide research and teaching contacts. The history of the phenomenological movement is completed by global geography. Intercultural relations have regard to philosophy, science, art, religion and everyday life. Famous names turn up like Boulez, Derrida, Levinas or Ricœur. Authors like Joyce, Kafka Proust and Kierkegaard appear in their home environment. There are trips crossing the black Harlem. One meets traces of war and violence in the streets of Sarajevo or Bogotà and at the memorial places of Auschwitz, Kaunas or Kiev. The margins of Europe are reached in Istanbul, Tbilisi, Tunis and Jerusalem. The author is an international known phenomenologist
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