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Publications associées (163)

An Extended Kalman Filter Framework for Polarimetric X-Band Weather Radar Data Processing

The different quantities measured by dual-polarization radar systems are closely linked to each other. An extended Kalman filter framework is proposed in order to make use of constraints on individual radar observables that are induced by these relations. ...

American Meteorological Society2012

Study of wave attenuation across parallel fractures using propagator matrix method

Jian Zhao, Jianbo Zhu

Stress wave attenuation across fractured rock masses is a great concern of underground structure safety. This paper presents an analytical study on wave attenuation across parallel fractures at arbitrary incidence angles, where multiple reflections occurri ...

Wiley-Blackwell2012

On the Mechanism of Current Pulse Propagation Along Conical Structures: Application to Tall Towers Struck by Lightning

Marcos Rubinstein, Abdolhamid Shoory, Keyhan Sheshyekani

We discuss in this paper the propagation of lightning current pulses along conical tall structures. Although the dominant mode of an infinitely long conical transmission line is transverse electric and magnetic (TEM), such a structure can also support high ...

2012

Measurement of acoustic attenuation in South Pole ice

Shirit Cohen, Mathieu Ribordy, Xiaoxia Bai

Using the South Pole Acoustic Test Setup (SPATS) and a retrievable transmitter deployed in holes drilled for the IceCube experiment, we have measured the attenuation of acoustic signals by South Pole ice at depths between 190 m and 500 m. Three data sets, ...

2011

Rock damage control in bedrock blasting excavation for a nuclear power plant

Jian Zhao

Drill and blast is a major method for bed rock excavation in nuclear power plant engineering. Under blasting excavation, blast-induced vibration propagates in rock mass and induces damage to surrounding rock. Studying the characteristics of wave propagatio ...

Elsevier2011

Kinetic modeling of the reaction and crystallization of acetylsalicylic acid using ATR UV-vis spectroscopy

Julien Léo Billeter

In industry, spectroscopy is used to monitor batch chemical reactions and to maximize production of a material for a minimum cost. However, there are many challenges involved in using spectroscopic methods to characterize reaction systems that undergo crys ...

2011

Hybrid Small Animal Imaging System Combining Magnetic Resonance Imaging with Fluorescence Tomography Using Single Photon Avalanche Diode Detectors

Edoardo Charbon, Lucio Carrara, Markus Rudin, Christof Baltes

The high sensitivity of fluorescence imaging enables the detection of molecular processes in living organisms. However, diffuse light propagation in tissue prevents accurate recovery of tomographic information on fluorophore distribution for structures emb ...

Institute of Electrical and Electronics Engineers2011

Lightning electromagnetic radiation over a stratified conducting ground: 2. Validity of simplified approaches

Abdolhamid Shoory

In the first part of this paper, the rigorous theory describing the electromagnetic field radiated by a lightning return stroke over a two-layered conducting ground was presented and the exact expressions for the lightning electromagnetic fields were devel ...

American Geophysical Union2011

Analysis of stochastic seismic wave interaction with a slippery rock fault

Jian Zhao

Stochastic seismic wave interaction with a slippery rock fault is studied, based on the principle of conservation of momentum at the wave fronts along the fault. By using the displacement discontinuity method, the wave propagation equations are derived for ...

Springer Verlag2011

Parametric Photonic Channelized RF Receiver

Camille Sophie Brès, James Adleman

A new class of photonic channelized radio-frequency (RF) receiver is proposed and demonstrated. The new device relies on generation of high fidelity signal copies by wavelength multicasting in a self-seeded, two-pump parametric mixer. Signal copying to ...

Institute of Electrical and Electronics Engineers2011

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