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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Deep learning of multi-scale PDEs based on data generated from particle methods
粒子方法 数据 多尺度 偏微分方程 深度学习
2023/4/26
Solving multi-scale PDEs is difficult in high-dimensional and/or convection-dominant cases. The interacting particle methods (IPM) are shown to outperform solving PDEs directly. Examples include compu...
Earth's mantle, not its core, may have generated planet's early magnetic field（图）
Earth's mantle generated planet early magnetic field
2020/3/13
New research lends credence to an unorthodox retelling of the story of early Earth that was first proposed by a geophysicist at the Scripps Institution of Oceanography in La Jolla, Californi...
COMPARATIVE ANALYSIS OF 3D POINT CLOUDS GENERATED FROM A FREEWARE AND TERRESTRIAL LASER SCANNER
Laser Scanning Close Range Photogrammetry Point clouds Heritage VSfM
2017/8/10
In the recent past, several heritage structures have faced destruction due to both human-made incidents and natural calamities that have caused a great loss to the human race regarding its cultural ac...
Analytical investigation on tsunamis generated by submarine slides
Analytical mathods froude number shallow-water approximations tsunami underwater landslides
2015/9/28
Tsunamis induced by landslides are a topic on which growing attention is being paid especially under the pressure of recent events in which movement of underwater masses have been recognised to be the...
Ionospheric disturbances generated by different natural processes and by human activity in Earth plasma environment
ionosphere Earth plasma environment
2015/9/14
The magnetosphere-ionosphere-thermosphere subsystem is strongly coupled via the electric field, particle precipitation, heat flows and small scale interaction. Satellites in situ measurements and grou...
Using Internet reports for early estimates of the final death toll of earthquake-generated tsunami: the March 11, 2011, Tohoku, Japan, earthquake
Casualties Earthquake-generated tsunami 2011 Tohoku earthquake
2015/8/27
A retrospective case study was conducted for the March 11, 2011, earthquake that occurred off the east Pacific coast of Tohoku, Japan, with reference to the Sumatra-Andaman earthquake and Indian Ocean...
Simulating the Long-Range Swell of Internal Waves Generated by Ocean Storms
Ocean Storms Internal Waves
2015/7/14
Near-inertial waves (NIWs) are a special class of internal gravity waves with periods set by planetary rotation and latitude (e.g., at 30° latitude, one cycle per 24 hours). They are notable because t...
Frontogenesis and Frontal Progression of a Trapping-Generated Estuarine Convergence Front and Its Influence on Mixing and Stratification
Front Frontogenesis Trapping Convergence front Lateral circulation
2015/6/30
Estuarine fronts are well known to influence transport of waterborne constituents such as phytoplankton and sediment, yet due to their ephemeral nature, capturing the physical driving mechanisms and t...
The model of self-generated seismo-electromagnetic oscillations of the LAI system
self-generated seismo-electromagnetic oscillations LAI system
2014/12/31
Very low frequency (VLF) electromagnetic radiation (in diapason 1 kHz–1 MHz) in the atmosphere, generated during an earthquake preparation period, may be connected with the linear size characterising ...
Analysis of integration sites of transgenic sheep generated by lentiviral vectors using next-generation sequencing technology
Gene transfer gene therapy gene transfer the original nucleus
2015/5/22
The development of new methods to carry out gene transfer has many benefits to several fields, such as gene therapy, agriculture and animal health. The newly established lentiviral vector systems fur...
Influence of PEG generated osmotic stress on shoot regeneration and some biochemical parameters in Lathyrus culture
drought grass pea in vitro screening multiplication rate proline
2014/7/9
Several Lathyrus species and in particular Lathyrus sativus (grass pea) display much tolerance to drought and have great agronomic potential as grain and forage legumes. Studies on these crop species ...
Geochemical characteristics and identification of thermogenic CBM generated during the low and middle coalification stages
woody peat thermal simulation experiment thermogenic CBM carbon and hydrogen isotopic composition Luling CBM field
2017/4/11
Six woody peat samples were heated to 150, 250, 300, 350, 370, and 400°C to determine their geochemical characteristics
and identify whether the coal bed methane (CBM) was thermogenic or secondary bi...
Effective vanishing theorems for ample and globally generated vector bundles
Effective vanishing theorems ample globally generated vector bundles
2018/4/19
By proving an integral formula of the curvature tensor of E⊗detE, we observe that the curvature of E⊗detE is very similar to that of a line bundle and obtain certain new Kodaira-Akizuki-Na...
Feynman Formulas Representation of Semigroups Generated by Parabolic Difference-Differential Equations
Difference-Differential Equations Semigroup Feynman Formula Chernoff Theorem
2013/1/30
We establish that the Laplas operator with perturbation by symmetrised linear hall of displacement argument operators is the generator of unitary group in the Hilbert space of square integrable functi...
A Characterization of Cellular Automata Generated by Idempotents on the Full Shift
cellular automata marker lemma products of idempotents decidability
2012/6/19
In this article, we discuss the family of cellular automata generated by so-called idempotent cellular automata (CA G such that G^2 = G) on the full shift. We prove a characterization of products of i...