Concept

Propagation des ondes radio

Publications associées (364)

On Lightning Electromagnetic Field Propagation Along an Irregular Terrain

Mario Paolone, Marcos Rubinstein, Mohammad Azadifar, Zhaoyang Wang, Stefan Metz, Davide Pavanello, Dongshuai Li, Qilin Zhang

In this paper, we present a theoretical analysis of the propagation effects of lightning electromagnetic fields over a mountainous terrain. The analysis is supported by experimental observations consisting of simultaneous records of lightning currents and ...

Institute of Electrical and Electronics Engineers2016

The physics mechanisms of the weakly coherent mode in the Alcator C-Mod Tokamak

Christian Gabriel Theiler

The weakly coherent mode (WCM) in I-mode has been studied by a six-field two-fluid model based on the Braginskii equations under the BOUT++ framework for the first time. The calcula- tions indicate that a tokamak pedestal exhibiting a WCM is linearly unsta ...

American Institute of Physics2016

Optics in 2D, Bloch surface wave phenomena and applications

Hans Peter Herzig, Myun Sik Kim, Elsie Barakat, Richa Dubey

Nano-photonics, where optical structures can manipulate light at the sub-wavelength scale, is making important advances towards optical communications, imaging and sensing. A novel platform suitable for fundamental investigations of light propagation throu ...

Ieee2016

Utilizing modeling, experiments, and statistics for the analysis of water-splitting photoelectrodes

Sophia Haussener, Yannick Kenneth Gaudy

A multi-physics model of a planar photoelectrochemical water-splitting device was developed, validated and used to identify and quantify the most significant materials-related bottlenecks in photoelectrochemical device performance. The model accounted for ...

Royal Society of Chemistry2016

Super-Resolution Imaging of a Dielectric Microsphere Is Governed by the Waist of Its Photonic Nanojet

Martinus Gijs, Raphaël Etienne Jean Trouillon, Hui Yang, Gergely Huszka

Dielectric microspheres with appropriate refractive index can image objects with super-resolution, that is, with a precision well beyond the classical diffraction limit. A microsphere is also known to generate upon illumination a photonic nanojet, which is ...

American Chemical Society2016

HRD Motif as the Central Hub of the Signaling Network for Activation Loop Autophosphorylation in Abl Kinase

Andrea Cavalli, Oliver Hantschel, Grégory La Sala

A number of structural factors modulate the activity of Abelson (Abl) tyrosine kinase, whose deregulation is often related to oncogenic processes. First, only the open conformation of the Abl kinase domain's activation loop (A-loop) favors ATP binding to t ...

Amer Chemical Soc2016

Wave propagation in periodic buckled beams

Florian Paul Robert Maurin

Folding of the earth's crust, wrinkling of the skin, rippling of fruits, vegetables and leaves are all examples of natural structures that can have periodic buckling. Periodic buckling is also present in engineering structures such as compressed lattices, ...

EPFL2015

Experimental Study on Wave Propagation Across a Rock Joint with Rough Surface

Xin Chen, Jian Zhao, Yang Zou

Joints are an important mechanical feature of rock masses. Their effect on wave propagation is significant in characterizing dynamic behaviors of discontinuous rock masses. An experimental study on wave propagation across artificial rock joint was carried ...

Springer Wien2015

Impulse waves generated by snow avalanches falling into lakes

Christophe Ancey

In recent years, the number of water reservoirs in high-altitude areas has increased. They are often used to provide water for various activities related with recreational (i.e. skiing) and production activities. Many of such reservoirs are threatened by s ...

IAHR2015

Existence and Uniqueness Theorems in Two-Dimensional Nematodynamics. Finite Speed of Propagation

Tudor Ratiu

The paper is devoted to the two-dimensional Ericksen-Leslie system describing the nematodinamics of liquid crystals. The moment of inertia of molecules is supposed to be strictly positive. The existence of the solution was proved in the case of periodic do ...

Springer Verlag2015

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