Download or read book Inclusion de donn es indirectes dans la simulation de r seaux de fractures discrets written by François Bonneau and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les méthodes stochastiques de modélisation discrète de réseaux de fractures reposent principalement sur la reproduction de la géométrie du réseau de fractures naturelles décrit par des lois de distributions statistiques. Classiquement, la géométrie de chaque objet est simulée en déterminant la position, l'orientation et la géométrie d'objets planaires représentant une fracture. Cependant, l'organisation générale du réseau est émergente d'un processus stochastique et stationnaire. Cette thèse explore une approche stochastique pseudo-génétique définissant des règles d'implantation et de propagation d'objets non planaires qui permet de contraindre l'émergence d'une organisation fractale particulière. La simulation mime le processus de fracturation naturelle en contraignant le positionnement et la géométrie de chaque fracture par la zone d'accumulation des contraintes et la zone d'ombre définie autour de chaque fracture déjà simulée. Nous étudierons l'impact de la méthode proposée sur la dimension fractale du réseau de fractures discret. De même, nous mènerons une étude quantifiant l'impact de notre méthode de simulation sur la connectivité des modèles et leur seuil de percolation. La validation des approches stochastiques se base sur le réalisme de la géométrie et du comportement des modèles produits. L'approche précédemment décrite contraint les géométries locale et globale des réseaux de fractures discrets par des lois statistiques et des concepts issus de la mécanique de la fracturation. L'imagerie des discontinuités mécaniques peut aussi passer par l'interprétation de données indirectes évaluant le comportement physique et/ou dynamique du volume de roche fracturé. Nous proposons une approche efficace pour intégrer à la simulation stochastique des considérations relatives à des tests de traceurs et à la microsismicité. Nous intégrerons ces considérations à la simulation directe des objets sans passer par une optimisation qui pourrait être couteuse en temps de calcul et corrompre l'organisation fractale du réseau de fracture discret.

Download or read book Writing Friendship written by Paloma Gay y Blasco and published by Springer Nature. This book was released on 2019-11-23 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book tells the remarkable story of the friendship between Liria Hernández, a Roma woman from Madrid, and Paloma Gay y Blasco, a non-Roma anthropologist. In this unique reciprocal experiment, the former informant returns the gaze to write about the anthropologist, her life and her environment. Through finely crafted and deeply moving text, Hernández and Gay y Blasco suggest new ways of doing and writing anthropology. The dialogue between Hernández and Gay y Blasco provides a courageous account of the entanglements and rewards of anthropological research. Drawing on letters, conversations, and fieldnotes gathered over twenty-five years, each of the authors talks about herself, the other, and the impact of anthropology on their two lives. They examine their intertwined trajectories as Spanish women and reflect on the challenges of devising their own reciprocal genre. Blending ethnography, life story and memoir, they undermine the dichotomy between author and subject around which scholarship still revolves.

Download or read book Biodiversity and Sustainable Development written by Rabindra Nath Pati and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the First Global Summit on Sustainable Development and Biodiversity, held at Raipur during 7-9 February 2009.

Download or read book Byzantium After Byzantium written by Nicolae Iorga and published by Center For Romanian Studies. This book was released on 2023-01-24 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Originally published in French in 1935, the author's formula Byzantium after Byzantium defines several centuries of world history. Iorga points out the great contributions of Byzantine civilization to the Western world, especially during the Renaissance. He demonstrates that Byzantium survived through its people and local autonomies, as well as through its exiles--clerics, scholars, merchants, and political officials. One of the most important expressions of this was found in the Romanian principalities where Greeks from the Phanar district of Istanbul played a major role in Romanian political life, defining an entire period of Romanian history--the Phanariot Period. They continued the Byzantine ideas, aspirations, education, and way of life. All of this allows us to speak of a Byzantium after Byzantium.

Download or read book Methods of Study in Quantitative Soil Ecology Population Production and Energy Flow written by John Phillipson and published by Blackwell Scientific Publications Limited. This book was released on 1971 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The soil and its total metabolism. Plant roots. Plant litter. Heterotrophic microflora. Protozoa. Nematodes. Enchytraeids. Earthworms. Molluscs. A comparison of extraction methods for terrestrial anthropods. Mites. Apterygotes, pauropods and symphylans. Aphids. Ants and termites. Other arthropods.

Download or read book The Problems of the Arid Zone written by Unesco and published by paris. This book was released on 1962 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Ecological Research written by and published by Academic Press. This book was released on 1977-09-27 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Ecological Research

Download or read book Diversity of Organisms written by Caroline M. Pond and published by . This book was released on 1990 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describing the structure and habits of living organisms, including viruses, micro-organisms, plants and animals, this book considers how scientists acquire and use knowledge about these organisms to investigate their origins and relationships, and to explore basic biological mechanisms. The principles of the comparative method are explained, using examples from modern research.