搜索结果: 1-15 共查到“理学 time scale”相关记录27条 . 查询时间(0.138 秒)
TIME-FREQUENCY AND TIME-SCALE CANONICAL REPRESENTATIONS OF DOUBLY SPREAD CHANNELS
TIME-FREQUENCY TIME-SCALE CANONICAL REPRESENTATIONS DOUBLY SPREAD CHANNELS
2015/9/29
A general technique for the generation of canonical channel models and demonstrate the application of the technique to time-frequency and time-scale integral kernel operators is developed. As an examp...
Short time scale laws in self-potentialsignals from two different seismically active Mediterranean areas(the Southern Apennine chainand Crete Island)
self-potential earthquake prediction structural analysis anomalous diffusion
2015/9/28
Self-potential time series are investigated to characterise self-potential time scales. The data analysed were recorded in stations located in two active seismic areas of the Mediterranean region, the...
Antipersistent dynamics in short time scale variability of self-potential signals
Fractal propeties variogram analysis antipersistence self-potential signal earthquake prediction
2015/9/28
Time scale properties of self-potential signals are investigated through the analysis of the second order structure function (variogram), a powerful tool to investigate the spatial and temporal variab...
Reduction of Markov chains with two-time-scale state transitions
Reduction Markov chain time scale approximation limit behavior
2014/12/5
We consider a general class of two-time-scale Markov chains whose transition rate matrices
depend on a parameterI. We assume that some transition rates of the Markov chain will tend to
infinity as I...
Slow Manifolds for Multi-Time-Scale Stochastic Evolutionary Systems
Slow Manifolds Multi-Time-Scale Stochastic Evolutionary Systems Probability
2012/5/24
This article deals with invariant manifolds for infinite dimensional random dynamical systems with different time scales. Such a random system is generated by a coupled system of fast-slow stochastic ...
An algorithm is proposed for constructing a group (ensemble) pulsar time based on the application of optimal Wiener filters. This algorithm makes it possible to separate the contributions of variation...
Transit timing variations in eccentric hierarchical triple exoplanetary systems. I. Perturbations on the time-scale of the orbital period of the perturber
Earth and Planetary Astrophysics (astro-ph.EP) Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/24
We study the long-term time-scale (i.e. period comaprable to the orbital period of the outer perturber object) transit timing variations in transiting exoplanetary systems which contain a further, mor...
Chronic nitrogen addition causes a reduction in soil carbon dioxide efflux during the high stem-growth period in a tropical montane forest but no response from a tropical lowland forest on a decadal time scale
Chronic nitrogen addition soil carbon dioxide efflux the high stem-growth period a tropical montane forest a tropical lowland forest
2010/1/21
Atmospheric nitrogen (N) deposition is rapidly increasing in tropical regions. We studied the response of soil carbon dioxide (CO2) efflux to long-term experimental N addition (125 kg N ha−1 yr&...
Direct Rhenium-Osmium age of the Oxfordian-Kimmeridgian boundary,Staffin bay,Isle of Skye,U.K.,and the Late Jurassic time scale
Direct Rhenium-Osmium age Oxfordian-Kimmeridgian boundary Staffin bay Late Jurassic time scale
2009/12/2
Rhenium-Osmium (Re-Os) dating of black shale of the proposed Global Stratotype Section and Point (GSSP) for the Oxfordian-Kimmeridgian boundary, at Staffin Bay, Isle of Skye, U.K., yields an age of 15...
Time-scale invariant changes in atmospheric radon concentration and crustal strain prior to a large earthquake
Time-scale invariant changes atmospheric radon concentration crustal strain earthquake
2009/11/2
Prior to large earthquakes (e.g. 1995 Kobe earthquake, Japan), an increase in the atmospheric radon concentration is observed, and this increase in the rate follows a power-law of the time-to-earthqua...
Correlation Structure and Time Scale of Simple Hydrologic Systems
Correlation Structure Time Scale Simple Hydrologic Systems
2009/10/29
Correlation structure of river runoff is a complicated set of different persistence
phenomena in the watershed itself and in the meteorological input to the watershed.
Correlation functions and time...
Determination of evaporation from a catchment water balance at a monthly time scale
evaporation monthly time scale catchment water
2009/6/8
A method is presented to determine total evaporation from the earth's surface at a spatial scale that is adequate for linkage with climate models. The method is based on the water balance of catchment...
Assessing positive matrix factorization model fit: a new method to estimate uncertainty and bias in factor contributions at the measurement time scale
Assessing positive matrix factorization model factor contributions measurement time scale
2009/3/12
A Positive Matrix Factorization receptor model for aerosol pollution source apportionment was fit to a synthetic dataset simulating one year of daily measurements of ambient PM2.5 concentrations, comp...
Systematic reduction of complex tropospheric chemical mechanisms, Part II: Lumping using a time-scale based approach
complex tropospheric chemical mechanisms Lumping time-scale
2009/3/6
This paper presents a formal method of species lumping that can be applied automatically to intermediate compounds within detailed and complex tropospheric chemical reaction schemes. The method is bas...
Systematic reduction of complex tropospheric chemical mechanisms, Part I: sensitivity and time-scale analyses
complex tropospheric chemical mechanisms sensitivity time-scale
2009/3/6
Explicit mechanisms describing the complex degradation pathways of atmospheric volatile organic compounds (VOCs) are important, since they allow the study of the contribution of individual VOCS to sec...