We study the spatiotemporal dynamics of random spatially distributed noninfinitesimal perturbations in one-dimensional chaotic extended systems. We find that an initial perturbation of finite size epsilon0 grows in time obeying the tangent space dynamic equations (Lyapunov vectors) up to a characteristic time tx(epsilon0) approximately b-(1/lambda(max))ln(epsilon0), where lambda(max) is the lar...

A cloud detection algorithm that attempts to identify all of the significant power returns from the vertical column above the micro pulse lidar at all times was applied to one year of micro pulse lidar data collected at the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) central facility near Lamont, Oklahoma. The results of this analysis are ...

This article reviews eight proposed strategies for solving the Symbol Grounding Problem (SGP), which was given its classic formulation in Harnad (1990). After a concise introduction, we provide an analysis of the requirement that must be satisfied by any hypothesis seeking to solve the SGP, the zero semantical commitment condition. We then use it to assess the eight strategies, which are organi...

In this paper, the behavior of the pseudopolynomial numerical hull of a square complex matrix with respect to structured perturbations and its radius is investigated.

This paper is the first of a series reporting the results of the Australia Telescope ESO Slice Project (ATESP) radio survey obtained at 1400 MHz with the Australia Telescope Compact Array (ATCA) close to the South Galactic Pole (SGP) over the region covered by the ESO Slice Project (ESP) galaxy redshift survey (δ ∼ −40 •). The survey consists of 16 radio mosaics with ∼ 8 ′′ × 14 ′′ resolution a...

A formalism is developed to investigate the instability and the time of rupture of thin films which are subjected to finite amplitude perturbations. The hydrodynamic and the interaction force nonlinearities cannot be ignored in such an event. The key idea of the approach is that, for a finite amplitude perturbation, one needs to study the instability of the corresponding finite amplitude, spati...

Intact cats and humans respond to support surface perturbations with broadly tuned, directionally sensitive muscle activation. These muscle responses are further sensitive to initial stance widths (distance between feet) and perturbation velocity. The sensory origins driving these responses are not known, and conflicting hypotheses are prevalent in the literature. We hypothesize that the direct...

Soil hydrology is highly nonlinear. As surface soil becomes To characterize the subgrid variability in surface hydrology at saturated with water, excess water runs off in streams. If the the SGP site, we drive a land surface model (the parameters that influence surface soil water vary widely within Biosphere-Atmosphere Transfer Scheme [BATS]; Dickinson a general circulation model (GCM) grid cel...