Author: Marceau Coupechoux
Publisher:
ISBN:
Category :
Languages : en
Pages : 283

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Author: Marceau Coupechoux
Publisher:
ISBN:
Category :
Languages : fr
Pages : 308

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Cette thèse apporte une contribution au domaine des protocoles de contrôle d'accès au médium (MAC) for réseaux ad hoc sans fil. Ces réseaux sont par définition créés pour l'occasion et ne nécessitent aucune infrastructure a priori. La norme IEEE 802.11 permet de réaliser aisément des réseaux ad hoc mais souffre de faiblesses en termes de capacité et d'équité, en particulier à forte charge. Cette thèse propose des alternatives à la norme. Le chapitre 1 dégage de la littérature une classification des protocoles MAC et distingue deux familles : les protocoles basés sur la compétition et ceux sans conflit. Le chapitre 2 évalue les performances de IEEE 802.11, avec des trafics TCP, UDP et voix sur IP en présence d'un point d'accès (PA). Les effets du phénomène de champ proche-champ lointain sont étudiés. Un exemple de déploiement pour zones peu denses est présenté. Enfin, nous montrons que les concepts du réseau multi-bond peuvent être utilisés pour étendre la couverture d'un PA. Le chapitre 3 propose un nouveau protocole MAC, appelé CROMA, pour réseaux ad hoc fortement chargés. L'analyse théorique et les simulations montrent que CROMA permet d'atteindre des débits plus importants et une plus grande équité. Le chapitre 4 étudie des mécanismes qui utilisent les interactions entre couches protocolaires pour une augmentation de la capacité et pour les évolutions de CROMA : (i) une version simplifiée de CROMA et une politique d'ordonnancement tirent partie de la mobilité des terminaux. (ii) La diversité multi-utilisateur améliore la phase de réservation de CROMA basée sur l'ALOHA slotté. (iii) La détection multi-utilisateur offre également des gains important en terme de capacité.

Author: Michael Jones
Publisher: Springer Science & Business Media
ISBN: 9048199328
Category : Science
Languages : en
Pages : 327

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This important and insightful book provides, for the first time, a broad presentation of ongoing research into public participation in landscape conservation, management and planning, following the 2000 European Landscape Convention which came into force in 2004. The book examines both the theory of participation and what lessons can be learnt from specific European examples. It explores in what manner and to what extent the provisions for participation in the European Landscape Convention have been followed up and implemented. It also presents and compares different experiences of participation in selected countries from northern, southern, eastern and western Europe, and provides a critical examination of public participation in practice. However, while the book’s focus is necessarily on Europe, many of the conclusions drawn are of global relevance. The book provides a valuable reference for researchers and advanced students in landscape policies and management, as well as for professionals and others interested in land-use planning and environmental management.

Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
ISBN: 9251305536
Category : Business & Economics
Languages : en
Pages : 435

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According to the report, the conference focused on the main challenges for the sustainable development of small-scale fisheries, including promoting political commitment and tailored strategies, raising awareness, and sharing knowledge.

Author: John R. W. Speller
Publisher: Open Book Publishers
ISBN: 1906924422
Category : Social Science
Languages : en
Pages : 208

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Book Description
Bourdieu and Literature is a wide-ranging, rigorous and accessible introduction to the relationship between Pierre Bourdieu's work and literary studies. It provides a comprehensive overview and critical assessment of his contributions to literary theory and his thinking about authors and literary works. One of the foremost French intellectuals of the post-war era, Bourdieu has become a standard point of reference in the fields of anthropology, linguistics, art history, cultural studies, politics, and sociology, but his longstanding interest in literature has often been overlooked. This study explores the impact of literature on Bourdieu's intellectual itinerary, and how his literary understanding intersected with his sociological theory and thinking about cultural policy. This is the first full-length study of Bourdieu's work on literature in English, and it provides an invaluable resource for students and scholars of literary studies, cultural theory and sociology.

Author: Peter Seitel
Publisher:
ISBN: 9780966552010
Category : Biens culturels - Politique gouvernementale - Congrès
Languages : en
Pages : 399

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Book Description
Proceedings from a conference "A global assessment of the 1989 recommendation on the safeguarding of traditional culture and folklore" held at the Smithsonian Institution June 27-30 1999. The purpose of the conference was to assess the implementation of the Recommendation (an international normative instrument adopted by UNESCO in 1989), to bring together points of view and perspectives on the Recommendaion from around the world, and suggest ways in which the Recommendation might develop in the future so that its purpose, the safeguarding of traditional culture and folklore, might be achieved.

Author: P. Petitjean
Publisher: Springer Science & Business Media
ISBN: 9401125945
Category : Science
Languages : en
Pages : 419

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Book Description
SCIENCE AND EMPIRES: FROM THE INTERNATIONAL COLLOQUIUM TO THE BOOK Patrick PETITJEAN, Catherine JAMI and Anne Marie MOULIN The International Colloquium "Science and Empires - Historical Studies about Scientific De velopment and European Expansion" is the product of an International Colloquium, "Sciences and Empires - A Comparative History of Scien tific Exchanges: European Expansion and Scientific Development in Asian, African, American and Oceanian Countries". Organized by the REHSEIS group (Research on Epistemology and History of Exact Sciences and Scientific Institutions) of CNRS (National Center for Scientific Research), the colloquium was held from 3 to 6 April 1990 in the UNESCO building in Paris. This colloquium was an idea of Professor Roshdi Rashed who initiated this field of studies in France some years ago, and proposed "Sciences and Empires" as one of the main research programmes for the The project to organize such a colloquium was a bit REHSEIS group. of a gamble. Its subject, reflected in the title "Sciences and Empires", is not a currently-accepted sub-discipline of the history of science; rather, it refers to a set of questions which found autonomy only recently. The terminology was strongly debated by the participants and, as is frequently suggested in this book, awaits fuller clarification.

Author: Guy S. Goodwin-Gill
Publisher: Inter-Parliamentary Union
ISBN: 9291422770
Category : Election law
Languages : en
Pages : 230

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Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Mission Systems Panel. Symposium
Publisher:
ISBN:
Category : Command and control systems
Languages : en
Pages : 202

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Author: ICOM
Publisher: Routledge
ISBN: 1317197410
Category : Social Science
Languages : en
Pages : 433

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Book Description
This volume provides an unparalleled exploration of ethics and museum practice, considering the controversies and debates which surround key issues such as provenance, ownership, cultural identity, environmental sustainability and social engagement. Using a variety of case studies which reflect the internal realities and daily activities of museums as they address these issues, from exhibition content and museum research to education, accountability and new technologies, Museums, Ethics and Cultural Heritage enables a greater understanding of the role of museums as complex and multifaceted institutions of cultural production, identity-formation and heritage preservation. Benefitting from ICOM’s unique position in the museum world, this collection brings a global range of academics and professionals together to examine museums ethics from multiple perspectives. Providing a more complete picture of the diverse activities now carried out by museums, Museums, Ethics and Cultural Heritage will appeal to practitioners, academics and students alike.