482 research outputs found
Jérusalem dans l'oeuvre des graveurs israéliens = Jerusalem and the Israeli Printmaker
No full textTracing a history of the Holy City's representation from the sacred texts through Israeli art of the time (1979), Omer briefly presents 18 printmakers through their respective itineraries and styles, stressing their influence on the development and practice of the medium. The author elaborates on Jerusalem's academic institutions, its museums and their collections. Artists alphabetically indexed, with biographical notes and reproductions. Texts in English, French and Hebrew
Introduction::How and why should we study dialogue?
No full textThis chapter (pp. 17-28) introduces the volume edited by Omer Sener, Frances Sleap, and Paul Weller (2016), Dialogue Theories II, The Dialogue Society, London. [ISBN 978-0-9934258-0-6]. In doing so it puts the book in a wider context of the previous volume on Dialogue Theories published (2013) by the Dialogue Society, as well as of the Journal of Dialogue Studies of which the author is academic editor. It discusses a range of key questions and "working definitions" about the nature of dialogue and critically evaluates a range of differing articulations of the aims and objectives of dialogue itself, and in relation to the study of it
Joint Radio Resource Management and Power Control in a Multi Cell Cellular Distributed Antenna System with Jain Fairness
No full text
Provenance-based trust for grid computing: Position Paper
No full textCurrent evolutions of Internet technology such as Web Services, ebXML, peer-to-peer and Grid computing all point to the development of large-scale open networks of diverse computing systems interacting with one another to perform tasks. Grid systems (and Web Services) are exemplary in this respect and are perhaps some of the first large-scale open computing systems to see widespread use - making them an important testing ground for problems in trust management which are likely to arise. From this perspective, today's grid architectures suffer from limitations, such as lack of a mechanism to trace results and lack of infrastructure to build up trust networks. These are important concerns in open grids, in which "community resources" are owned and managed by multiple stakeholders, and are dynamically organised in virtual organisations. Provenance enables users to trace how a particular result has been arrived at by identifying the individual services and the aggregation of services that produced such a particular output. Against this background, we present a research agenda to design, conceive and implement an industrial-strength open provenance architecture for grid systems. We motivate its use with three complex grid applications, namely aerospace engineering, organ transplant management and bioinformatics. Industrial-strength provenance support includes a scalable and secure architecture, an open proposal for standardising the protocols and data structures, a set of tools for configuring and using the provenance architecture, an open source reference implementation, and a deployment and validation in industrial context. The provision of such facilities will enrich grid capabilities by including new functionalities required for solving complex problems such as provenance data to provide complete audit trails of process execution and third-party analysis and auditing. As a result, we anticipate that a larger uptake of grid technology is likely to occur, since unprecedented possibilities will be offered to users and will give them a competitive edge
Replication Data for: Vortex imprints on a free surface as proxy for surface divergence
No full textThis is a complementary data and computer code set to the accepted manuscript "Vortex imprints on a free surface as proxy for surface divergence". It contains the surface layer of the DNS data set used and the code to analyse it in the ways described in the article. The work was funded by the European Union (ERC, WaTurSheD grant 101045299) and the Research Council of Norway (iMod, grant 325114). The research by A. Xuan and L. Shen is also supported by the Office of Naval Research and National Science Foundation. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Council. Neither the European Union nor the granting authority can be held responsible for them
Dynamic spectrum access models: towards an engineering perspective in the spectrum debate
No full textThe increased demand for wireless communications services, and innovations in smart radio technologies have spurred a debate in the recent past regarding the efficiency of the spectrum governance policy of the Federal Communications Commission (FCC). The two main camps that have emerged in this yet non-conclusive debate are the ones that are proponents of (i) the spectrum property rights and (ii) the spectrum commons. In this dissertation, we first present a detailed overview of the ongoing spectrum debate and then present two engineering models that allow certain types of realistic comparisons to be made.
We call these models dynamic property-rights spectrum access (D-Pass) and dynamic-commons property-rights spectrum access (D-CPass). While both models introduced retain a bias toward the spectrum property rights approach based usage of spectrum, they also promote dynamic access and short term dedication of spectrum resources. Specifically, we consider a framework where operators compete for spectrum and users in a geographical area. A spectrum policy server (SPS) functions as a controller/enforcer as well as a clearinghouse for spectrum allocations.
In the D-Pass model, the operators pay the SPS for the exact amount of bandwidth they are allocated, irrespective of the utilization of the bandwidth. Each operator competes for users via rate and price offers for utilizing the spectrum portion under its short term "ownership." We model the operator competition in the form of a
SPS-mediated iterative bidding scheme that is reminiscent of a simultaneous ascending auction. In the D-CPass model, all operators
have access to all the available bandwidth during the competition phase. The operators pay the SPS for the portion of the spectrum that they actually utilize (pay-as-you-go). They compete for each user via rate and price offers through an SPS-mediated iterative bidding scheme that is reminiscent of a single-item ascending auction. Our results indicate that both the spectrum access mechanism and the market forces play an important role in determining the resulting bandwidth utilization. Furthermore, under negligible spectrum usage costs, the commons-like model (D-CPass) promotes greater utilization of spectrum resources.Ph.D.Includes bibliographical references (p. 109-111)
- …
