نتایج جستجو برای: slope instability

تعداد نتایج: 141389  

2009
Paolo Castorina Daniela Carcò Caterina Guiot Thomas S. Deisboeck

Optimal delivery of chemotherapy intensity is dependent on hostand tumor-specific characteristics. In this article, the chemotherapy late intensity schedule is revised to account for tumor growth instability, where a small tumor cell fraction emerges that exhibits a higher proliferation rate than the parent strain. Modeling this instability as simplified twopopulation dynamics, we find that: (a...

Shokri, B. ,

The distribution function of the electrons produced in the interaction between an intense electromagnetic wave and a neutral gas is derived and is shown to be nonequilibrium and anisotropic. By assuming that the time scale of gas ionization is much greater than the field period, it is shown that the electron distribution function formed in microwave and optical discharges has sharp anisotropy a...

2013
LUDOVIC RAVANEL PHILIP DELINE CHRISTOPHE LAMBIEL CHRISTIAN VINCENT

Rockfalls are dominant in the rock slopes and rock ridge morphodynamics in high mountain areas and endanger people who pass along or stay there, as well as infrastructure that host them (cable cars, refuges). Risks are probably greater now because of fast permafrost degradation and regression of surface ice, two consequences of the atmospheric warming of the last decades. These two commonly ass...

2009
Gabriele Pannocchia James B. Rawlings David Q. Mayne Wolfgang Marquardt

We present a method for computing the solution to the infinite horizon continuous-time constrained linear quadratic regulator (CLQR). The method relies on two main features: a multi-grid method for placing a finite number of time intervals, and a piece-wise linear parameterization of the input within the intervals. The input values at the grid points and slopes within the time intervals are com...

1999
Wendy W. Zhang John R. Lister

Self-similar profiles associated with capillary instability of a fluid thread of viscosity lh in surrounding fluid of viscosity h are obtained for 1 16 # l # 16 via a simplified numerical scheme. Universal similarity scaling is preserved despite an asymptotically large velocity in the pinching neck driven by nonlocal dynamics. The numerical results agree well with experimental measurements by C...

Rock slope stability depends very much on the strength features of the rock and the geometrical and strength characteristics of the discontinuities (e.g., roughness, wall strength and persistence). Since a rock mass is not a continuum, its behavior is dominated by such discontinuities as faults, joints and bedding planes. Also, Rock slope instability is a major hazard for human activities and o...

2013
Ascanio Rosi Pietro Vannocci Veronica Tofani Giovanni Gigli Nicola Casagli

Ricasoli is a village located in a morphological high in the Upper Arno river Valley (Tuscany), an area historically subject to widespread slope instability phenomena. This morphological high and the surrounding slopes result to be affected by numerous landslides, which cause the retreat of the escarpments surrounding the village, involving infrastructures and buildings. To better understand th...

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