Comptes Rendus Physique

Masao Takamoto

Ichiro Ushijima

Manoj Das

Nils Nemitz

Takuya Ohkubo

Kazuhiro Yamanaka

Noriaki Ohmae

Tetsushi Takano

Tomoya Akatsuka

Atsushi Yamaguchi

Hidetoshi Katori

Frequency ratios of Sr, Yb, and Hg based optical lattice clocks and their applications

Stefan Droste

Thomas Udem

Ronald Holzwarth

Theodor Wolfgang Hänsch

Optical frequency dissemination for metrology applications

Alain Sibille

Claude Oestges

Tome 16 (2015) – No 9 
Background of the poster of the 2014 scientific meeting of URSI-France.
Image d’arrière-plan de l’affiche des journées scientifiques 2014 d’Ursi-France.
(Graphic design/Conception graphique : Atelier Isatis.)
DOSSIER
Radio science for connecting humans with information systems / L’homme connecté
Scientific workshop / Journées scientifiques URSI-France, CNAM, 25 & 26 March 2014
Coordinators / Coordinateurs : Alain Sibille, Claude Oestges
• Foreword
Alain Sibille, Claude Oestges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 773
• A regularised boundary element formulation for contactless SAR evaluations within homogeneous and 
inhomogeneous head phantoms
Rajendra Mitharwal, Francesco P. Andriulli . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 776
• Body area networks at radio frequencies: Creeping waves and antenna analysis
Khaleda Ali, Farshad Keshmiri, Alessio Brizzi, Yang Hao, Christophe Craeye . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 789
• A statistical assessment of ambient electromagnetic field using body-worn multiaxial sensors
Christophe Roblin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802
• Coils for ingestible capsules: Near-field magnetic induction link
Marjorie Grzeskowiak, Fatiha El Hatmi, Antoine Diet, Megdouda Benamara, David Delcroix, Thierry Alves, 
Stéphane Protat, Shermila Mostarshedi, Odile Picon, Yann Le Bihan, Gaelle Lissorgues . . . . . . . . . . . . . . . . . . . . . . 819
• 4G antennas for wireless eyewear devices and related SAR
Aykut Cihangir, Will Whittow, Chinthana Panagamuwa, Gilles Jacquemod, Frédéric Gianesello, Cyril Luxey 836
• Compact planar monopole antenna for wearable wireless applications
Tsitoha Andriamiharivolamena, Pierre Lemaître-Auger, Smail Tedjini, Franck Tirard . . . . . . . . . . . . . . . . . . . . . . . . 851
• Overview of mobile localization techniques and performances of a novel fingerprinting-based method
Isabelle Vin, Davy P. Gaillot, Pierre Laly, Martine Liénard, Pierre Degauque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 862


Foreword

Martin van Hecke

Slow granular flows: The dominant role of tiny fluctuations

Sylvain Courrech du Pont

Dune morphodynamics

Thiago Pereira

Cyril Pitrou

Isotropization of the universe during inflation

Vincent Garcia

Manuel Bibes

Agnès Barthélémy

Artificial multiferroic heterostructures for an electric control of magnetic properties

Mael Guennou

Michel Viret

Jens Kreisel

Bismuth-based perovskites as multiferroics

Alexandre Valance

Michel Louge

Tome 16 (2015) – No 1 
Leveed and fingered deposit of a bi-disperse mixture of spherical (white) glass ballotini (75–150 μm) and 
irregular (brown) carborundum grains (315–350 μm) on a chute inclined at 27◦ and made of a monolayer of 
(turquoise) glass ballotini (750–1000 μm). The photo shows an oblique head-on view, with the depth of 
field used to give an impression of distance; regions far away or close to the camera are out of focus. The 
flow direction is from top to bottom. Each finger consists of a coarse-rich (brown) levee on either side, lined 
with an almost pure layer of more mobile fines (white). This relatively low friction channel lining is 
progressively revealed as the channel flow (speckled in centre) drains down and stops. This flow 
self-organization significantly enhances the run-out; the formation of fingers and lateral levees prevents 
the flow from spreading laterally while the fines lining in the channel reduces basal friction (video). For 
further details, see J.M.N.T. Gray et al., this issue, pp. 73–85. 
DOSSIER
Granular physics / Physique des milieux granulaires
Coordinators / Coordinateurs : Alexandre Valance, Michel Louge
• Granular physics
Alexandre Valance, Michel Louge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
• Modeling force transmission in granular materials
Farhang Radjai . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• Jamming in granular materials
Robert P. Behringer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
• Strain localisation in granular media
Jacques Desrues, Edward Andò . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
• Slow granular flows: The dominant role of tiny fluctuations
Martin van Hecke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Continued on the next page
Contents (continued)
• Precursors and triggering mechanisms of granular avalanches
Renaud Delannay, Mickaël Duranteau, Vincent Tournat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
• Kinetic theory for sheared granular flows
Viswanathan Kumaran . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
• Rheological properties of dense granular flows
Pierre Jop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
• Particle-size segregation in dense granular avalanches
John Mark Nicholas Timm Gray, Parmesh Gajjar, Peter Kokelaar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
• Debris flows: Experiments and modelling
Barbara Turnbull, Elisabeth T. Bowman, Jim N. McElwaine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
• The structure of powder snow avalanches
Betty Sovilla, Jim N. McElwaine, Michel Y. Louge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
• The physics of Aeolian sand transport
Alexandre Valance, Keld Rømer Rasmussen, Ahmed Ould El Moctar, Pascal Dupont . . . . . . . . . . . . . . . . . . . . . . . . . . 105
• Dune morphodynamics
Sylvain Courrech du Pont . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118


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Frequency ratios of Sr, Yb, and Hg based optical lattice clocks and their applications

Optical frequency dissemination for metrology applications

Foreword

Slow granular flows: The dominant role of tiny fluctuations

Dune morphodynamics

Isotropization of the universe during inflation

Artificial multiferroic heterostructures for an electric control of magnetic properties

Bismuth-based perovskites as multiferroics

Granular physics

The physics of Aeolian sand transport

2,036

2,321