搜索结果: 1-15 共查到“理学 Avalanches”相关记录16条 . 查询时间(0.078 秒)
Neuronal avalanches of a self-organized neural network with active-neuron-dominant structure
Neuronal avalanches self-organized neural network active-neuron-dominant structure Neurons and Cognition
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2012/5/3
Neuronal avalanche is a spontaneous neuronal activity which obeys a power-law distribution of population event sizes with an exponent of -3/2. It has been observed in the superficial layers of cortex ...
The balance between excitation and inhibition controls the temporal organization of neuronal avalanches
excitation and inhibition temporal organization of neuronal avalanches Neurons and Cognition
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2012/5/2
Neuronal avalanches, measured in vitro and in vivo, exhibit a robust critical behaviour. Their temporal organization hides the presence of correlations. Here we present experimental measurements of th...
Information capacity and transmission are maximized in balanced cortical networks with neuronal avalanches
Information capacity transmission balanced cortical networks
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2011/1/5
The repertoire of neural activity patterns that a cortical network can produce constrains the network's ability to transfer and process information. Here, we measured activity patterns obtained from m...
Physical vulnerability of reinforced concrete buildings impacted by snow avalanches
Physical vulnerability reinforced concrete buildings impacted
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2010/10/21
This paper deals with the assessment of physical vulnerability of civil engineering structures to snow avalanche loadings. In this case, the vulnerability of the element at risk is defined by its dama...
The EU CADZIE database for extreme and deflected snow avalanches
The EU CADZIE database snow avalanches
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2009/12/9
The EU programme CADZIE (Catastrophic Avalanches: Defence Structures and Zoning in Europe), was established after the catastrophic 1999 avalanche winter in Europe. The overall objective of the program...
Calibration and application of the MN2D dynamics model to the avalanches of Las Leñas (Argentina)
Calibration and application the MN2D dynamics model Las Leñ as (Argentina)
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2009/12/9
In this work, the MN2D dynamics model is calibrated with two different avalanches of the same magnitude: dry and wet. The importance of the topographic data in the simulation is evaluated. It is concl...
Physical modelling of the interaction between powder avalanches and defence structures
Physical modelling powder avalanches defence structures
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2009/12/9
In order to better understand the interaction between powder snow avalanches and defence structures, we carried out physical experiments on small-scale models. The powder snow avalanche was simulated ...
Experimental investigation on steady granular flows interacting with an obstacle down an inclined channel: study of the dead zone upstream from the obstacle. Application to interaction between dense snow avalanches and defence structures
Experimental investigation steady granular flows the dead zone upstream dense snow avalanches defence structures
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2009/12/9
An experimental investigation with dry granular flows passing over an obstacle down a rough inclined channel has been performed. The aim is to improve our understanding of the interaction between dens...
Reconstructing snow avalanches in the Southeastern Pyrenees
snow avalanches Southeastern Pyrenees
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2009/12/8
A regional study of snow avalanche processes was undertaken in the SE Pyrenees. Dendrogeomorphology was used to date and reconstruct large-scale snow avalanche events that occurred in the last four de...
On the predictability of ice avalanches
predictability ice avalanches
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2009/11/11
The velocity of unstable large ice masses from hanging glaciers increases as a power-law function of time prior to failure. This characteristic acceleration presents a finite-time singularity at the t...
Avalanches in bi-directional sandpile and burning models:a comparative study
Avalanches in bi-directional sandpile burning models comparative study
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2009/11/11
We perform a statistical analysis of two one-dimensional avalanching models: the bi-directional sandpile and the burning model (described in detail in the companion paper by Gedalin et al. (2005) "Dyn...
Optimal design under uncertainty of a passive defense structure against snow avalanches: from a general Bayesian framework to a simple analytical model
Optimal design a passive defense structure snow avalanches a general Bayesian framework a simple analytical model
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2009/12/30
For snow avalanches, passive defense structures are generally designed by considering high return period events. In this paper, taking inspiration from other natural hazards, an alternative method bas...
Optimal design under uncertainty of a passive defense structure against snow avalanches:from a general Bayesian framework to a simple analytical model
Optimal design uncertainty passive defense structure snow avalanches Bayesian framework
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2010/1/4
For snow avalanches, passive defense structures are generally designed by considering high return period events. In this paper, taking inspiration from other natural hazards, an alternative method bas...
Validating numerical simulations of snow avalanches using dendrochronology: the Cerro Ventana event in Northern Patagonia, Argentina
Validating numerical simulations of snow avalanches dendrochronology the Cerro Ventana event
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2009/12/30
The damage caused by snow avalanches to property and human lives is underestimated in many regions around the world, especially where this natural hazard remains poorly documented. One such region is ...
Dendrogeomorphology and high-magnitude snow avalanches: a review and case study
Dendrogeomorphology high-magnitude snow avalanches
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2009/12/30
The application of the principles of dendrogeomorphology for the dating of high-magnitude snow avalanches is well established in the natural hazards literature. A variety of methodologies are employed...