The survival probability of a particle diffusing in the two-dimensional domain x > 0 near a "windy cliff" at x = 0 is investigated. The particle dies upon reaching the edge of the cliff: In addition to diffusion, the particle is influenced by a steady "wind shear" with velocity v(x,y)=vsign (y)~, i.e., no average bias either toward or away from the cliff. For this semi-infinite system, the part...

The retreat of chalk cliffs fringing the eastern English Channel contributes shingle to the beaches which helps to protect the cliffs and slow down erosion. Conversely, cliff retreat endangers settlements and infrastructure on the clifftop. Rates of retreat have been calculated by a variety of methods over the past century, but no attempt has been made to provide a complete coverage that allows...

to enhance the understanding of the impact of obstacle buildings on pollution transportationand dispersion in the atmospheric boundary layer, it is necessary to know the atmospheric flow characteristics over terrains. wind flow characteristics in a boundary layer over a step-shaped cliff topography model with rough and smooth surfaces were studied numerically using computational fluid dynamics ...

JCB • VOLUME 214 • NUMBER 2 • 2016 122 Growing up in the Boston area, Cliff Brangwynne was a kid with distinct interests. He recalls performing one of his fi rst experiments after watching a TV program on quantum mechanics: spending an afternoon bouncing a tennis ball off a wall in an attempt to observe quantum tunneling. Through high school, he read pop-science books about the weirdness of the...

The purpose of this paper is to analyze the literature on Gender and Company Executives with identifying lines which future research could be directed in order eradicate gender differences decision-making bodies companies. A bibliometric study has been carried out Web Science collection, which, after a series filters, given rise sample 144 articles from 1992 2018. Keywords bibliographic referen...

Twas a dangerous cliff, they freely confessed, Though to walk near its crest was so pleasant, But, over its terrible edge there had slipped A duke and full many a peasant; So the people said something would have to be done, But their projects did not at all tally. Some said: "Put a fence round the edge of the cliff." Others said: An ambulance down in the valley." Joseph Malines Prevention and C...

In this paper we describe Artificial Intelligence as research that moves along two different axes: humancompatible knowledge and machine-compatible proceasing. An analysis of computer chess research along these dimensions shows that AI more and more diverges into an engineering branch and a cognitive branch. As an explanation, we offer a hypothesis about the dependency of research effort on the...

We analyse the statistical pattern of seismicity before a 1-2 10 m chalk cliff collapse on the Normandie ocean shore, Western France. We show that a power law acceleration of seismicity rate and energy in both 40 Hz-1.5 kHz and 2 Hz-10kHz frequency range, is defined on 3 order of magnitude, within 2 hours from the collapse time. Simultaneously, the average size of the seismic events increases t...