Concept

Cultural evolution

Related publications (56)

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De l'acoustique des églises en Suisse

Victor Desarnaulds

The existence of the fundamental conflict in churches between the desirable acoustic conditions for music and for speech intelligibility prompted this dissertation. It tackles the subject not only under the acoustical perspective but also in the historical ...

EPFL2002

Holographic multiplexing in photorefractive polymers

Demetri Psaltis

A new multiplexing schedule is derived for multiplexing holograms in photorefractive polymers which do not exhibit mono-exponential recording behavior. An M-number (M/#) of 0.3 was measured experimentally by recording 20 holograms of roughly equal strength ...

2000

In-situ OH kinetics study providing an indicator for ozone formation limitation

Hubert van den Bergh, Bertrand Calpini, Alain Clappier

Hydroxyl radicals dominate daytime tropospheric chem., responsible for reactive removal of most trace gases (e.g., volatile org. compds.[VOC]), and is an active participant in the NO and NO2 cycle. Pump-and-probe LIDAR was used to examine the OH- chem. in ...

1999

Startup Methods for Single-Mode Gyrotron Operation

Stefano Alberti, Minh Quang Tran, Trach-Minh Tran

Experimental start-up results of a 118 GHz TE(22,6) gyrotron are presented and compared with theory. The theoretical excitation regimes of competing modes are computed in the energy-velocity-pitch-angle plane. The start-up paths through the plane are deter ...

1995

Na Hyperoxidation States Studied by Core-Level Spectroscopy

Giorgio Margaritondo

In order to investigate the formation and the time evolution of Na oxidation states, a thin ayer 0 sodium was deposited on oxidized substrates and exposed to oxygen at 10(-9) Torr. In the Na 2p core-level spectrum, several chemically shifted components hav ...

1994

UN CRITERIO DI DIMENSIONAMENTO DELLE PROTEZIONI DI FONDO IN BACINI DI DISSIPAZIONE

Andrea Rinaldo

Analytical solutions for space and time evolution of uplift pressures acting on the impervious lining of stilling basins are obtained. Uplift variations are forced by random fluctuating pressures generated by a hydraulic jump. The model, aimed at portrayin ...

1985