Results 41 to 50 of about 3,165,406 (373)

Research progress and prospect of intelligent prediction and disaster risk assessment of open-pit mining surface deformation

矿业科学学报
Research on the prediction and disaster risk assessment of surface deformation in open-pit mines serves to improve the accuracy of disaster warning and make safety control decisions.
LI Hui, ZHU Wancheng, XU Xiaodong, SONG Qingwei, HAN Xiaofei, GENG Huikai   +5 more
doaj   +1 more source

A hybrid recognition model of microseismic signals for underground mining based on CNN and LSTM networks

Geomatics, Natural Hazards & Risk, 2021
Microseismic (MS) monitoring technology has been widely used to monitor ground pressure disasters. However, the underground mining environment is complex and contains many types of noise sources.
Yong Zhao, Haiyan Xu, Tianhong Yang, Shuhong Wang, Dongdong Sun   +4 more
doaj   +1 more source

Two-Stream Instability Model With Electrons Trapped in Quadrupoles

, 2009
We formulate the theory of the two-stream instability (e-cloud instability) with electrons trapped in quadrupole magnets. We show that a linear instability theory can be sensibly formulated and analyzed. The growth rates are considerably smaller than the
E. Keil, G.P. Lawrence, M.A. Plum ., M.A. Plum ., N.A. Krall, P J Channell, R.J. Macek, R.J. Macek, R.J. Macek ., R.J. Macek ., R.J. Macek .   +10 more
core   +3 more sources

Finger patterns produced by thermomagnetic instability in superconductors [PDF]

, 2004
A linear analysis of thermal diffusion and Maxwell equations is applied to study the thermomagnetic instability in a type-II superconducting slab. It is shown that the instability can lead to formation of spatially nonuniform distributions of magnetic ...
A. L. Rakhmanov, A. V. Bobyl, A. V. Gurevich, C. Buzea, D. V. Shantsev, M. N. Wilson, T. H. Johansen, U. Bolz, U. Bolz, V. Vlasko-Vlasov, Y. M. Galperin   +10 more
core   +1 more source

The instability of instability of centered distributions [PDF]

Mathematical Social Sciences, 2010
Abstract Democratic simple majority voting is perhaps the most widely used method of group decision making in our time. Standard theory, based on “instability” theorems, predicts that a group employing this method will almost always fail to reach a stable conclusion.
openaire   +2 more sources

An Updated Model of Chronic Ankle Instability.

Journal of athletic training, 2019
Lateral ankle sprains (LASs) are among the most common injuries incurred during participation in sport and physical activity, and it is estimated that up to 40% of individuals who experience a first-time LAS will develop chronic ankle instability (CAI ...
J. Hertel, R. Corbett
semanticscholar   +1 more source

Establishment of landslide early-warning indicator using the combination of numerical simulations and case matching method in wushan open-pit mine

Frontiers in Earth Science, 2022
Landslides seriously threaten the safety of human life and property. In order to predict the on-set of potential landslides, this paper first characterizes the physical and mechanical parameters of rock mass on the basis of core rock quality designation ...
Penghai Zhang, Wenxue Deng, Feiyue Liu, He Wang, Xin Dong, Peng Niu   +5 more
doaj   +1 more source

Neutrino transport and hydrodynamic stability of rotating proto-neutron stars

, 2007
We consider stability of differentially rotating non-magnetic proto-neutron stars. When neutrino transport is efficient, the star can be subject to a diffusive instability that can occur even in the convectively stable region.
Urpin, V.
core   +1 more source

Instabilities in the dissolution of a porous matrix [PDF]

, 2011
A reactive fluid dissolving the surrounding rock matrix can trigger an instability in the dissolution front, leading to spontaneous formation of pronounced channels or wormholes.
A. J. C. Ladd, Aharonov, Chadam, Daccord, Dreybrodt, Ennis-King, Fredd, Fryar, Golfier, Hinch, Lund, Lund, Noiriel, Ortoleva, P. Szymczak, Romanov, Sherwood, Szymczak, Tan   +18 more
core   +2 more sources

Epidemiology of Ankle Sprains and Chronic Ankle Instability.

Journal of athletic training, 2019
OBJECTIVE To provide a focused overview of the existing literature on the epidemiology of acute ankle sprains (lateral, medial, and high/syndesmotic) with an emphasis on incidence studies from the United States.
Mackenzie M. Herzog, Z. Kerr, S. Marshall, E. Wikstrom   +3 more
semanticscholar   +1 more source