This paper contains a short description of the experimental Lautaret site dedicated to avalanche dynamic studies. Since the seventies, many experimental campaigns allowed measuring different avalanche parameters such as velocity, height and pressure. Technical development have been also carried in this site and are presented here. More recently, a chute for physical modelling of avalanche motio...

We demonstrate low-voltage germanium waveguide avalanche photodetectors (APDs) with a gain × bandwidth product above 100GHz. A photonic receiver based on such a Ge APD, including a 0.13μm SiGe BiCMOS low-noise trans-impedance amplifier and a limiting amplifier, is realized. A 5.8dB sensitivity improvement is demonstrated at -5.9V bias at an avalanche gain of 6 through bit error ratio measuremen...

Superconducting nanowire avalanche single-photon detectors (SNAPs) with n parallel nanowires are advantageous over single-nanowire detectors because their output signal amplitude scales linearly with n. However, the SNAP architecture has not been viably demonstrated for n > 4. To increase n for larger signal amplification, we designed a multi-stage, successive-avalanche architecture which used ...

The avalanche polynomial on a graph, introduced in [5], capture the distribution of avalanches in the abelian sandpile model. Studied on trees, this polynomial could be defined by simply considering the size of the subtrees of the original tree. In this article, we study some properties of this polynomial on plane trees. In [5], they show that two different trees could have the same avalanche p...

Avalanche dynamics has been described in organotypic cultures and acute slices from rat cortex. Its distinctive feature is a statistical distribution of avalanche size and duration following a power law with specific exponents, corresponding to near-critical state. We asked whether the same dynamics is present in dissociated cultures from rat embryos, which are characterized by complete lack of...

A model of a low noise high quantum efficiency n+np Germanium Photodiode utilizing ion implantation technique and subsequent drive-in diffusion in the n layer is presented. Numerical analysis is used to study the influence of junction depth and bulk concentration on the electric field profile and quantum efficiency. The performance of the device is theoretically treated especially at the wave-l...

Over the last five years, the use of avalanche airbags has increased dramatically, both among professional guides and amateur recreationists. While there were only a couple different airbag types on the market ten years ago, backcountry enthusiasts can now choose from a wide range of models produced by at least four different manufacturers. In additional, a few new manufacturers are pushing int...

The Strict Avalanche Criterion (SAC) was introduced by Webster and Tavares in a study of cryptographic design criteria. This is an indicator for local property. In order to improve the global analysis of cryptographically strong functions, Zhang and Zheng introduced the global avalanche characteristics (GAC). The sum-of-squares indicator related to the GAC is defined as σf = ∑ v ∆ 2 f (v), wher...

Abstract. The strength and stability properties of hierarchical load bearing networks and their strengthened variants have been discussed in recent work. Here, we study the avalanche time distributions on these load bearing networks. The avalanche time distributions of the V− lattice, a unique realization of the networks, show power-law behavior when tested with certain fractions of its trunk w...