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Folded nodes occur in generic slow-fast dynamical systems with two slow variables. Open regions
of initial conditions flow into a folded node in an open set of such systems, so folded nodes are an
i...
THE POTENTIAL OF DISCRETE RETURN, SMALL FOOTPRINT AIRBORNE LASER SCANNING DATA FOR VEGETATION DENSITY ESTIMATION
laser scanning correlation point cloud forestry land cover
2015/8/13
We evaluate the potential of deriving a vegetation leaf area index (LAI) from small footprint airborne laser scanning
data. Based on findings from large area histograms of discrete laser return...
Return probability for the loop-erased random walk and mean height in sandpile : a proof
Return probability the loop-erased random walk mean height Statistical Mechanics
2011/7/28
Return probability for the loop-erased random walk and mean height in sandpile : a proof.
Exponential return to equilibrium for hypoelliptic quadratic systems
Quadratic operators hypoellipticity return to equilibrium rate of convergence
2011/7/26
Abstract: We study the problem of convergence to equilibrium for evolution equations associated to general quadratic operators. Quadratic operators are non-selfadjoint differential operators with comp...
Pointwise characteristic factors for the multidimensional return times theorem
Pointwise characteristic factors multidimensional return times theorem
2011/1/21
This paper is an update and extension of a result the authors first proved in 2003. The goal of this paper is to study factors which are known to be L2-characteristic for certain nonconventional avera...
Optimal control of reverse logistics model with logistic demand and return rates
Optimal control reverse logistics model logistic demand return rates
2010/9/27
Pontryagin minimum principle (PMP) is applied in this paper to find the optimal control of the reverse logistics model of a production inventory system with deteriorating items. The total cost of the ...
Estimation of high return period flood quantiles using additional non-systematic information with upper bounded statistical models
return period flood quantiles additional non-systematic information
2010/12/22
This paper proposes the estimation of high return period quantiles using upper bounded distribution functions with Systematic and additional Non-Systematic information. The aim of the developed method...
Mapping snow depth return levels: smooth spatial modeling versus station interpolation
Mapping snow depth return levels smooth spatial modeling
2010/12/22
For adequate risk management in mountainous countries, hazard maps for extreme snow events are needed. This requires the computation of spatial estimates of return levels. In this article we use recen...
Global return maps for mixed-mode oscillations with one fast and two slow variables
Dynamical Systems (math.DS) Classical Analysis and ODEs (math.CA) Chaotic Dynamics (nlin.CD)
2010/11/10
Alternating patterns of small and large amplitude oscillations occur in a wide variety of physical, chemical, biological and engineering systems. These mixed-mode oscillations (MMOs) are often found i...
Multi-model assessment of stratospheric ozone return dates and ozone recovery in CCMVal-2 models
stratospheric ozone return dates ozone recovery CCMVal-2 models
2010/10/11
Projections of stratospheric ozone from a suite of chemistry-climate models (CCMs) have been analyzed. In addition to a reference simulation where anthropogenic halogenated ozone depleting substances ...
We show that the distribution of the first return time τ to the origin, v, of a simple randomwalk on an infinite recurrent graph is heavy tailed and non-concentrated.
Nonlinear Stochastic Model of Return matching to the data of New York and Vilnius Stock Exchanges
Nonlinear Stochastic Model Return matching Vilnius Stock Exchanges
2010/4/27
We scale and analyze the empirical data of return from New York and Vilnius stock exchanges matching it to the same nonlinear double stochastic model of return in financial market.
Mediterranean offshore extreme wind analysis from the 44-year HIPOCAS database: different approaches towards the estimation of return periods and levels of extreme values
wind extreme values
2010/1/27
The present contribution addresses the performance of a statistical extreme wind analysis over the whole Mediterranean Basin. Estimations of return periods and levels are obtained over offshore areas ...
Characteristics of quasi-static potential structures observed in the auroral return current region by Cluster
quasi-static potential structures auroral return current region Cluster
2009/11/11
Temporal and spatial characteristics of intense quasi-static electric fields and associated electric potential structures in the return current region are discussed using Cluster observations at geoce...
Estimating return levels from maxima of non-stationary random sequences using the Generalized PWM method
return levels non-stationary random sequences Generalized PWM method
2009/11/2
Since the pioneering work of Landwehr et al. (1979), Hosking et al. (1985) and their collaborators, the Probability Weighted Moments (PWM) method has been very popular, simple and efficient to estimat...