although some 3d slope stability algorithms have been proposed in recent three decades, still role of pore pressures in three dimensional slope stability analyses and considering the effects of pore water pressure in 3d slope stability studies needs to be investigated. in this paper, a limit analysis formulation for investigation of role of the pore water pressure in three dimensional slope sta...

erosion is one of the important factors in soil degradation and decrease fertility and slope length is one of the most effective factors in land form and amount of erosion. the objective of this study was investigation of spatially variation of sediment concentration in slope length until to receive transport capacity. to obtain this goal a hill slope simulator system designed and manufactured....

With the standard of living in China is improved constantly, construction expressway northeast Chongqing has also witnessed a rapid growth. The process mountain road, cuttings and embarkment road would definitely cause distortion movement high slope create large amount lose sand, which seriously threat safety slopes. Meanwhile, engineering causes destruction original vegetation, hard to restore...

abstract spacing between check dams depends on the stream bed slope, effective height of check dams and slope of deposited sediments behind the check dams. the slope of deposited sediments is more important than the other two factors because of complications in the way of its occurrence and its measurement after several years of dam construction. this research presents the effective factors aff...

The slope problem, in its most basic form, asks the question “Given n points in R which do not all lie on the same line, what is the smallest number of distinct slopes that they must determine?” The answer to this was settled in a 1980 paper by Peter Ungar, who used purely combinatorial methods to show that the answer was n if n was even, and n− 1 if n was odd. This paper considers several gene...

Brief bursts of high-frequency action potentials represent a common firing mode of pyramidal neurons, and there are indications that they represent a special neural code. It is therefore of interest to determine whether there are particular spatial and temporal features of neuronal inputs that trigger bursts. Recent work on pyramidal cells indicates that bursts can be initiated by a specific sp...

In order to contribute to solve the personalization/privacy paradox, we propose a privacy-preserving architecture for one of stateof-the-art recommendation algorithm, Slope One. More precisely, we describe SlopPy (for Slope One with Privacy), a privacy-preserving version of Slope One in which a user never releases directly his personal information (i.e, his ratings). Rather, each user first per...

For a wide class of self-gravitating systems, we show that if the density is cusped like r −γ near the center, then the limiting value of the anisotropy parameter β = 1 − v 2 T /(2v 2 r) at the center may not be greater than γ/2. Here, v 2 r and v 2 T are the radial and tangential velocity second moments. This follows from the non-negativity of the phase space density. We compare this theorem t...