Results 41 to 50 of about 118,511 (249)

Moving dunes on the Google Earth [PDF]

, 2013
Several methods exist for surveying the dunes and estimate their migration rate. Among methods suitable for the macroscopic scale, the use of the satellite images available on Google Earth is a convenient resource, in particular because of its time ...
Sparavigna, Amelia Carolina
core   +1 more source

The song of the dunes as a self-synchronized instrument

, 2006
Since Marco Polo (1) it has been known that some sand dunes have the peculiar ability of emitting a loud sound with a well defined frequency, sometimes for several minutes. The origin of this sustained sound has remained mysterious, partly because of its
A. Daerr, A. Manning, A. D. Lewis, B. Kabbachi, C. R. Darwin, F. Nori, G. D. R. Midi, G. N. Curzon, H. Elbelrhiti, H. C. Bolton, J. H. Poynting, J. J. Qu, K. Pye, Marco Polo, P. Hersen, P. K. Haff, R. Cooke, R. A. Bagnold, R. A. Bagnold, S. Douady, S. Protière, T. H. van Rooyen   +21 more
core   +4 more sources

Knowledge sourcing, geopolitics, and FDI: An empirical analysis on the US green and digital sectors

Global Strategy Journal, EarlyView.
Abstract Research Summary This paper examines how foreign direct investment (FDI) shapes firms' sourcing of knowledge in the digital and green domains under rising geopolitical frictions. We assemble a firm–country dyadic panel (2013–2020) linking US patent backward citations to firms' FDI, enriched with bilateral geopolitical distance and host‐country
Alberto Maria Radici
wiley   +1 more source

Influence of grain size, shape and compaction on georadar waves: example of an Aeolian dune

, 2012
Many Ground Penetrating Radar (GPR) profiles acquired in dry aeolian environment have shown good reflectivity inside present-day dunes. We show that the origin of this reflectivity is related to changes in grain size distribution, packing and/or grain ...
Adetunji, Annan, Asami, Atkins, Bagnold, Bano, Bano, Bano, Barndorf-Nielsen, Bayard, Boyle, Bristow, Bristow, Bristow, Bruggeman, Costas, Davis, Greaves, Gómez-Ortiz, Hanai, Harari, Hunter, Jackson, Jean-Remi Dujardin, Jiao, Jol, Julien Guillemoteau, Koltermann, Lancaster, Lehmann, Maksim Bano, Marion, Maxwell-Garnett, McGeary, Mendelson, Mountney, Neal, Otto, Robinson, Robinson, Sen, Shenk, Sihvola, Stratton, Thomas, Von Hippel, Wang, Watson, Widess, Zeng   +49 more
core   +5 more sources

Sand transverse dune aerodynamics: 3D Coherent Flow Structures from a computational study [PDF]

, 2015
The engineering interest about dune fields is dictated by the their interaction with a number of human infrastructures in arid environments. Sand dunes dynamics is dictated by wind and its ability to induce sand erosion, transport and deposition.
Bruno, Luca, Fransos, Davide
core   +2 more sources

Should multinationals care about development? Rethinking global strategy in an unequal world

Global Strategy Journal, EarlyView.
Abstract Research Summary While multinational corporations (MNCs) can profoundly shape global development trajectories, global strategy research has largely treated development as peripheral to core strategic concerns. This Perspective paper examines the contested relationship between global strategy and development, arguing that MNCs are neither ...
Marcus M. Larsen, Rajneesh Narula, Thomas DeBerge   +2 more
wiley   +1 more source

Minimal model for aeolian sand dunes

, 2002
We present a minimal model for the formation and migration of aeolian sand dunes. It combines a perturbative description of the turbulent wind velocity field above the dune with a continuum saltation model that allows for saturation transients in the ...
A.R. Lima, F. Rioual, F.K. Wippermann, G. Sauermann, G. Sauermann, G.F.S. Wiggs, Gerd Sauermann, H.J. Finkel, Hans J. Herrmann, J.C.R. Hunt, J.M.T. Stam, J.P. Bouchaud, K. Kroy, Klaus Kroy, L. Prigozhin, M. Sørensen, M.C. Malin, P. Nalpanis, P.C. Thomas, P.M. van Dijk, P.R. Owen, P.S. Jackson, R.B. Hoyle, R.B. Hoyle, R.I. Sykes, R.S. Anderson, W.S. Weng   +26 more
core   +1 more source

Incidence of debris discs around FGK stars in the solar neighbourhood [PDF]

, 2016
Debris discs are a consequence of the planet formation process and constitute the fingerprints of planetesimal systems. Their solar system's counterparts are the asteroid and Edgeworth-Kuiper belts.
Augereau, J. -C., Bayo, A., Danchi, W. C., del Burgo, C., Eiroa, C., Ertel, S., Fridlund, M., Heras, A. M., Kirchschlager, F., Krivov, A. V., Liseau, R., Maldonado, J., Marshall, J. P., Montes, D., Montesinos, B., Mora, A., Pilbratt, G. L., Solano, E., Wolf, S.   +18 more
core   +6 more sources

Experiencing 50 Years of Synergistic Development in Structural Biology and Enzymology

Journal of the Chinese Chemical Society, EarlyView.
Picture of Sunney Chan with Academia Sinica (AS) President James C. Liao and three Vice Presidents: Shin‐Kun Peng (left one), Tang K. Tang (right one), and Mei‐Yin Chou (right 2), taken at the annual Chinese New Year's Banquet of AS, February 7, 2025. This was likely Sunney's last appearance in formal activities of AS.
Ming‐Daw Tsai
wiley   +1 more source

On the shape of barchan dunes

, 2005
Barchans are crescent-shaped sand dunes forming in aride regions with unidirectional wind and limited sand supply. We report analytical and numerical results for dune shapes under different environmental conditions as obtained from the so-called `minimal
Bagnold R A, Benedikt Obermayer, Betat A, Edgett K S, Iversen J D, Klaus Kroy, Kroy K, Lima A R, Marshall J R, Owen P R, Sauermann G, Schwämmle V Herrmann H, Sebastian Fischer, Shields A, Weng W S   +14 more
core   +1 more source