Download or read book Architecture et croissance des plantes written by Philippe de Reffye and published by Quae. This book was released on 2016-12-15 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comment les plantes poussent-elles ? Le nombre d’or est-il omniprésent dans leur architecture ? Leurs structures sont-elles fractales ? Ont-elles un langage ? Une grammaire ? Il y a du vrai dans ces questions, mais il faut aller plus loin. Il faut identifier, modéliser et simuler le rôle des organes d’une plante dans sa croissance et leur fonctionnement. La modélisation des plantes fait l’objet de recherches à l’interface de disciplines biologiques (botanique, agronomie, génétique, écophysiologie) des mathématiques appliquées et de l’informatique. Elle permet de créer les modèles de développement de l’architecture des plantes, mais aussi les modèles de production végétale, expression de la croissance des organes. Les auteurs de cet ouvrage nous exposent les fondements biologiques, mathématiques et informatiques qui permettent d’exprimer le fonctionnement des bourgeons, la production photosynthétique de la biomasse et sa répartition dans les organes d’une plante. La simulation de la croissance des plantes devient alors possible sous la forme de modèles dynamiques et sa représentation, sous la forme d’images de synthèse. Ces modèles autorisent de multiples applications. De nombreuses plantes sont présentées (herbacées, arbustes et arbres) ; leur modélisation a une visée pratique en agriculture, en gestion des ressources naturelles et de l’environnement et en représentation des paysages. Rédigé par des botanistes, des agronomes, des mathématiciens et des informaticiens, cet ouvrage collectif est le fruit de quarante années de recherches conduites par Philippe de Reffye et ses collègues, avec des collaborations scientifiques en France, en Hollande, en Chine et en Afrique. Il s’adresse aux chercheurs, enseignants et étudiants en biologie, en agronomie et en sciences de la vie, aux architectes paysagistes, écologues, qui s’intéressent à la croissance des plantes, à leur modélisation et à leur représentation. Il s’adresse aussi à toutes les communautés des sciences exactes (mathématiciens, informaticiens, physiciens) intéressées par la simulation du vivant.
Download or read book Architecture des plantes et production v g tale written by Philippe de Reffye and published by Editions Quae. This book was released on 2018-05-15 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comment modéliser la production végétale en utilisant les concepts de l’architecture des plantes ? Rédigé par des botanistes, des agronomes, des mathématiciens et des informaticiens, cet ouvrage considère l’architecture d’une plante comme le résultat de la dynamique de ses organes, en lien avec la particularité du modèle architectural propre à son espèce. Il rend compte des principaux fondements de la modélisation des plantes et décrit les principales applications de cette démarche.
Download or read book Repr sentation multi chelles de l architecture des plantes written by Boudon-F and published by Omn.Univ.Europ.. This book was released on 2018-02-28 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: La g om trie d'une plante est un objet complexe, combinant les g om tries de nombreux organes, d pendant de l' chelle consid r e et tr s variable dans le temps. Malgr cette complexit et cette plasticit , elle est devenue un enjeu de mod lisation majeur ces derni res ann es aussi bien en co-physiologie, qu'en synth se d'images. Dans cette tude, nous formalisons un mod le g om trique multi- chelles g n ral de repr sentation de l'architecture des plantes. Ce mod le int gre de mani re coh rente diff rentes repr sentations g om triques diff rents niveaux de d tails. Il permet ainsi d'adapter la complexit de la repr sentation au cours des calculs et d'en acqu rir une compr hension plus pr cise. Nous utilisons ce mod le dans une approche "montante" pour caract riser les formes globales mergentes de la structure d taill e d'une plante. Il est ensuite utilis dans une approche "descendante" pour le d veloppement d'un mod le de croissance des plantes fond sur un nouveau paradigme de simulation. Le principe de cette approche s'appuie sur une hi rarchisation en chelles des informations qui permet la manipulation interactive et intuitive de mod les complexes de plantes.
Download or read book Une contribution logicielle d di e la simulation de l architecture et de la croissance des plantes written by Jean-François Barczi and published by . This book was released on 2008 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le présent document est une capitalisation des recherches entreprises depuis 1990 dans le domaine de la simulation de l'architecture des plantes au laboratoire AMAP du Cirad.
Download or read book Agroforestry Science Policy and Practice written by Fergus L. Sinclair and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agroforestry research is central to developing methods for the sustainable use of natural renewable resources, evolving to address the needs of the coming century. It is now necessary to consolidate the scientific gains now being made in process-oriented research and to develop a policy framework to encourage the adoption of sustainable land use practices. Agroforestry plays an important role in conserving forest resources, reducing the need for deforestation. Further, if `forest' is broadly defined as tree cover, agroforestry will also increase the proportion of woody biomass in farming landscapes. The papers selected for inclusion in Agroforestry: Science, Policy, and Practice establish agroforestry as an interdisciplinary science focused on the practical imperative of assisting farmers, forest dwellers and landscape-level planners to achieve sustainable food, fuel and timber production into the 21st century.
Download or read book From Models to Simulations written by Franck Varenne and published by Routledge. This book was released on 2018-09-03 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book analyses the impact computerization has had on contemporary science and explains the origins, technical nature and epistemological consequences of the current decisive interplay between technology and science: an intertwining of formalism, computation, data acquisition, data and visualization and how these factors have led to the spread of simulation models since the 1950s. Using historical, comparative and interpretative case studies from a range of disciplines, with a particular emphasis on the case of plant studies, the author shows how and why computers, data treatment devices and programming languages have occasioned a gradual but irresistible and massive shift from mathematical models to computer simulations.
Download or read book REPRESENTATION ET SIMULATION DE CROISSANCE DES VEGETAUX written by Marc Jaeger and published by . This book was released on 1987 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'IMAGE DE SYNTHESE SE HEURTE A LA REPRESENTATION DES VEGETAUX, ETRES COMPLEXES, VARIES ET EVOLUTIFS. LE MODELE DEVELOPPE ICI UTILISE UNE MODELISATION FINE DE L'ARCHITECTURE DES VEGETAUX A PARTIR DE DEUX APPROCHES COMPLEMEZNTAIRES. LA PREMIERE, BOTANIQUE, DECRIT LES HIERARCHIES ET PROCESSUS INTERVENANT DANS L'ELABORATION DE L'ARCHITECTURE DES VEGETAUX: LA DEUXIEME, DE NATURE MATHEMATIQUE, DEFINIT L'ARCHITECTURE D'UNE PLANTE PRECISE PAR DES LOIS STOCHASTIQUES DE CROISSANCE, DE VIABILITE ET DE RAMIFICATION DES BOURGEONS. LA TRADUCTION INFORMATIQUE DU MODELE ABOUTIT A UN GENERATEUR DE VEGETAUX COMPOSE D'UN MOTEUR DE CROISSANCE (QUI DETERMINE L'EVOLUTION TOPOLOGIQUE DE LA PLANTE) ET DE FONCTIONS GEOMETRIQUE (QUI DEFINISSENT LES DIRECTIONS DE DEVELOPPEMENT ET L'EFFET DE LA PESANTEUR)
Download or read book The Biodiversity of African Plants written by Xander van der Maesen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the XIVth AETFAT Congress, 22-27 August 1994, Wageningen, the Netherlands
Download or read book Architectures de plantes written by Francis Hallé and published by JPC Editions. This book was released on 2004-01-01 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Evolution of Plant Architecture written by Marie Helena Kurmann and published by Royal Botanic Gardens Kew. This book was released on 1999 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant architecture is the morphological manifestation of the genetic make-up of a plant at any one stage during its development. Application of accurate architectural models provides a wealth of information about living and extinct plants, especially in regard to growth pattern and development. The Evolution ofPlant Architecture brings together contributions from specialists in many different fields, including ecology, palaeobotany, systematics and evolution.
Download or read book The Supporting Roots of Trees and Woody Plants Form Function and Physiology written by A. Stokes and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication comprises the proceedings of the first International Conference devoted to the structural roots of trees and woody plants. 'The Supporting Roots - Structure and Function,' 20-24 July 1998, Bordeaux, France. The meeting was held under the auspices ofIUFRO WPS 2. 01. 13 'Root Physiology and Symbiosis,' and its aim was to bring together scientific researchers, foresters and arboriculturalists, to discuss current problems in structural root research and disseminate knowledge to an audience from a wide disciplinary background. For the first time in an international conference, emphasis was placed on presenting recent reseach in the field of tree anchorage mechanics and root biomechanics. The way in which tree stability can be affected by root system symmetry and architecture was addressed, as well as how movement during wind sway can influence the development and shape of woody roots. The role of different nursery and planting techniques was discussed, in relation to effects on root system form and development. Root response to different environmental stresses, including water, temperature, nutrient and mechanical stress was addressed in detail. The structure and function of woody roots was also considered at different levels, from coarse to fine roots, with several papers discussing the interaction between roots and the rhizosphere. One of the conference highlights was the presentation of new methods in root research, by a series of workshops held at LRBB-INRA, Pierroton, on the northern border of the Gascony forest.
Download or read book Canadian Journal of Botany written by and published by . This book was released on 2000 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contribution la mod lisation et simulation de la croissance des v g taux written by Pascal Dabadie and published by . This book was released on 1991 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'ETUDE DE LA CROISSANCE ET DE L'ARCHITECTURE DES PLANTES PAR MODELISATION INFORMATIQUE EST UNE VOIE PROMETTEUSE ET ENCORE PEU EXPLOREE DE LA BOTANIQUE. CE TRAVAIL CONSISTE EN DES DEVELOPPEMENTS APPORTES A UN LOGICIEL DE BASE, MODELE DE CROISSANCE PRODUISANT DES IMAGES DE SYNTHESE. L'ETUDE A PRINCIPALEMENT PORTE SUR LA MODELISATION DES INTERACTIONS ENTRE PLANTE DANS LE TEMPS. L'INFLUENCE MORPHOGENETIQUE DE FACTEURS COMME L'ENCOMBREMENT PHYSIQUE, LA LUMIERE ET LA GRAVITE EST DISCUTEE. LES HYPOTHESES RETENUES SONT TESTEES PAR SIMULATION
Download or read book Spiral Symmetry written by Istv n Hargittai and published by World Scientific. This book was released on 1992 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of essays explores the aesthetic, graphic, literary, scientific, mathematical, and computer-related aspects of the spiral in nature and in the man-made world.
Download or read book Cyberworlds written by Tosiyasu L. Kunii and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: The worlds synthesized in the cyberspaces of networked computers are the theme of Cyberworlds. Cyberspaces have come into prominence with the de velopment of the Internet and are expected to expand drastically with the emergence of national and international information systems. The purpose is to discover the architecture and design of cy of the book Cyberworlds berworlds by synthesizing worlds in cyberspaces. The underlying philosophy is crucial to the success of the architecture, and an initial effort is made to delineate it at the beginning of the book. The book's topics are selected to clarify the issues of the philosophy, architecture, and design of cyberworlds through a wide variety of case studies. The approach presented in the book is thus characterized as synthetic rather than analytic. There already are numbers of books with observations and analyses of cyberworlds. They warn of the danger of widespread crimes and accidents in the cyberworlds, for instance. Without a philosophy and methodologies of how to architecturally design and synthesize the cyber worlds, the worlds in cyberspaces tend to be arbitrarily extended, disordered, and, in extreme cases, criminal. This book is intended to benefit readers by providing them with a possible direction to take in deciding how to synthesize worlds in cyberspaces. Cre ating new worlds in new spaces with almost unlimited dimension and scale is an immense challenge. In principle, anyone at any moment can participate in the creation. The book serves as a creator's reference and also as a design guidebook.
Download or read book Essai sur la mod lisation des interactions entre la croissance et le d veloppement d une plante cas du mod le Greenlab written by Amélie Rostand-Mathieu and published by . This book was released on 2006 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Le modèle GreenLab combine la modélisation de l'architecture et du fonctionnement des plantes. Basé sur des observations botaniques, dans la suite des modèles AMAP, il est écrit sous forme d'un système dynamique discret. Les travaux de cette thèse visent à améliorer la modélisation de la croissance en intégrant les interactions entre la croissance et le développement. En fonction des conditions extérieures, la plante produit plus ou moins de matière, ce qui a une influence non seulement sur le volume de ses organes, mais aussi sur leur nombre (feuilles, fruits), sur la ramification et sur les caractéristiques fonctionnelles de certains organes. La prise en compte de ces phénomènes permet de représenter les différentes phases de croissance d'un arbre ou les capacités d'adaptation d'une plante dans son environnement, cela grâce à l'évolution dynamique du rapport de l'offre sur la demande, variable de contrôle des différents évènements dus aux interactions entre la croissance et le développement. La croissance de la plante est modélisée de manière discrète. L'écriture du système dynamique discret correspondant à l'aide d'un formalisme adapté permet de mener des études de comportement du modèle, et de tester la sensibilité aux paramètres. Ce modèle conceptuel de croissance de plantes peut être appliqué à différentes plantes réelles en cherchant des jeux de paramètres d'entrée du modèle permettant de reproduire au mieux la croissance de ces plantes.
Download or read book Virtual Worlds written by Jean-Claude Heudin and published by Springer Science & Business Media. This book was released on 2000-06-21 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Virtual Worlds 2000 is the second in a series of international scientific conferences on virtual worlds held at the International Institute of Multimedia in Paris La Défense (Pôle Universitaire Léonard de Vinci). The term "virtual worlds" generally refers to virtual reality applications or experi ences. We extend the use of these terms to describe experiments that deal with the idea of synthesizing digital worlds on computers. Thus, virtual worlds could be de fined as the study of computer programs that implement digital worlds. Constructing such complex artificial worlds seems to be extremely difficult to do in any sort of complete and realistic manner. Such a new discipline must benefit from a large amount of work in various fields: virtual reality and advanced computer graphics, artificial life and evolutionary computation, simulation of physical systems, and more. Whereas virtual reality has largely concerned itself with the design of 3D immersive graphical spaces, and artificial life with the simulation of living organisms, the field of virtual worlds, is concerned with the synthesis of digital universes considered as wholes, with their own "physical" and "biological" laws.
