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2747563677 La Desertification Dans Le Monde Causes Processus Consequences Lutte

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Data Mining

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This volume provides a snapshot of the current state of the art in data mining, presenting it both in terms of technical developments and industrial applic ...

  • L'auteur : ,
  • Editeur: Springer
  • ISBN: 3540325484
  • Genre: Computers
  • Nombre de pages: 331
  • Langue: French/English
  • Vues: 838
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Détails: This volume provides a snapshot of the current state of the art in data mining, presenting it both in terms of technical developments and industrial applications. The collection of chapters is based on works presented at the Australasian Data Mining conferences and industrial forums. Authors include some of Australia's leading researchers and practitioners in data mining. The volume also contains chapters by regional and international authors.


Micromechanics of Granular Materials

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Nearly all solids are compised of grains. However most studies treat materials as a continious solid. The book applies analysis used on loose granular mate ...

  • L'auteur : Bernard Cambou,Michel Jean,Farhang Radjaï
  • Editeur: John Wiley & Sons
  • ISBN: 1118623088
  • Genre: Science
  • Nombre de pages: 320
  • Langue: French/English
  • Vues: 1269
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Détails: Nearly all solids are compised of grains. However most studies treat materials as a continious solid. The book applies analysis used on loose granular materials to dense grainular materials. This title’s main focus is devoted to static or dynamic loadings applied to dense materials, although rapid flows and widely dispersed media are also mentioned briefly. Three essential areas are covered: Local variable analysis: Contact forces, displacements and rotations, orientation of contacting particles and fabric tensors are all examples of local variables. Their statistical distributions, such as spatial distribution and possible localization, are analyzed, taking into account experimental results or numerical simulations. Change of scales procedures: Also known as “homogenization techniques”, these procedures make it possible to construct continuum laws to be used in a continuum mechanics approach or performing smaller scale analyses. Numerical modeling: Several methods designed to calculate approximate solutions of dynamical equations together with unilateral contact and frictional laws are presented, including molecular dynamics, the distinct element method and non-smooth contact dynamics. Numerical examples are given and the quality of numerical approximations is discussed.