Results 11 to 20 of about 101,142 (277)

A Machine Learning Approach to Extract Rock Mass Discontinuity Orientation and Spacing, from Laser Scanner Point Clouds

open access: yesRemote Sensing, 2022
This study wants to give a contribution to the semi-automatic evaluation of rock mass discontinuities, orientation and spacing, as important parameters used in Engineering.
Elisa Mammoliti   +5 more
doaj   +1 more source

Automatic Discontinuity Classification of Wind-turbine Blades Using A-scan-based Convolutional Neural Network

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
Recent development trends in wind power generation have increased the importance of the safe operation of wind-turbine blades (WTBs). To realize this objective, it is essential to inspect WTBs for any defects before they are placed into operation ...
Jiyeon Choung   +4 more
doaj   +1 more source

Evolution of initial discontinuities in the Riemann problem for the Kaup-Boussinesq equation with positive dispersion [PDF]

open access: yes, 2017
We consider the space-time evolution of initial discontinuities of depth and flow velocity for an integrable version of the shallow water Boussinesq system introduced by Kaup.
A. M. Kamchatnov   +15 more
core   +3 more sources

Geo-Engineering Analysis and Evaluation of Unstable Rocky Slopes near Shaqlawa, NE Iraq

open access: yesIraqi Geological Journal, 2022
Engineering Geological study of rock slope stability was conducted in two stations along the Shaqlawa region route. Rock slopes and discontinuities were thoroughly investigated at each site, and the linkages between failures were identified. The
Thair Al-Samarrai
doaj   +1 more source

Topology Change and Causal Continuity [PDF]

open access: yes, 1997
The result that, for a scalar quantum field propagating on a ``trousers'' topology in 1+1 dimensions, the crotch singularity is a source for an infinite burst of energy has been used to argue against the occurrence of topology change in quantum gravity ...
A. Anderson   +21 more
core   +5 more sources

Classification of Hidden Dynamics in Discontinuous Dynamical Systems

open access: yesSIAM Journal on Applied Dynamical Systems, 2015
Summary: Ordinary differential equations with discontinuous right-hand side, where the discontinuity of the vector field arises on smooth surfaces of the phase space, are the topic of this work. The main emphasis is the study of solutions close to the intersection of two discontinuity surfaces.
GUGLIELMI, NICOLA, HAIRER E.
openaire   +4 more sources

Quantitative morphometrics suggest that the widespread Neotropical Humiria balsamifera (Aubl.) St. Hil. is a species complex

open access: yesActa Botânica Brasílica, 2021
Humiria balsamifera is an infraspecific complex of high phenotypic variation and widely distributed in northern South America. Leaf traits are traditionally considered the most relevant taxonomic characters for varietal level delimitation in the group ...
Ana Sofia Sousa de Holanda   +4 more
doaj   +1 more source

Classifying Interplanetary Discontinuities Using Supervised Machine Learning

open access: yesEarth and Space Science, 2023
Directional discontinuities (DDs) are defined as abrupt changes of the magnetic field orientation. We use observations from ESA's Cluster mission to compile a database of events: Four thousand two hundred and sixteen events are identified in January ...
Daniel Dumitru, Costel Munteanu
doaj   +1 more source

Study of rock slope stability for formation outcrops in limb north eastern poor anticline North Iraq

open access: yesTikrit Journal of Pure Science, 2023
This Study aims at rock Slopes Stability for formation in limb northـeastern poor anticline (Fatha, Injana and Mukdadyah). In (5) Stations, representing all types of failures (taken place and possible).
Mohammad. R. Abood   +2 more
doaj   +1 more source

Dominant discontinuities based on stereographic projection and K-means clustering algorithm

open access: yesYantu gongcheng xuebao, 2018
For the rock slope with many complicated discontinuities, the selection and analysis of the discontinuities are a very important work. The traditional analysis methods are insufficient and inadequate. The analysis results have a lot of subjective factors,
WANG Jun-jie 1,3, FENG Deng 1,3, CHAI He-jun 2, LIU Yun-fei 1,3
doaj   +1 more source

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