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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Structure-Preserving Spectral Method for Large-Scale MHD System Simulation
MHD 系统仿真 保结构谱
2023/8/31
Structure-preserving numerical methods are crucial for achieving long-time accurate, stable, consistent and physically meaningful simulations. In this talk, we present H^1 and H(div) conforming spectr...
Fuzzy comprehensive assessment of running condition for a large-scale centrifugal compressor set
Compressor Condition assessment Mathematical modeling Maximal information coefficient Dynamic deterioration degree Prediction
2023/6/19
A fuzzy comprehensive assessment method of running condition was constructed and applied to a large-scale centrifugal compressor set in a petrochemical corporation aiming at the monitoring and early w...
Researchers capture first atomic-scale images depicting early stages of particle accelerator film formation（图）
粒子加速器 薄膜形成 原子尺度图像
2023/4/6
New research from a team of scientists at the Center for Bright Beams has made significant strides in developing new techniques to guide the growth of materials used in next-generation particle accele...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Towards Provably Efficient Quantum Algorithms for Nonlinear Dynamics and Large-scale Machine Learning Models
非线性动力学 机器学习模型 高效量子算法
2023/4/4
Nonlinear dynamics play a prominent role in many domains and are notoriously difficult to solve. Whereas previous quantum algorithms for general nonlinear equations have been severely limited due to t...
The next generation of micrometer-scale batteries（图）
Materials Science Mechanical Engineering Electrical and Computer Engineering Research
2023/3/28
Automated sprinklers, lighting, and security systems have been commonplace in homes and offices for several decades. In recent years, however, they have become increasingly efficient at anticipating u...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Large scale device simulations
大规模 设备 仿真
2022/12/1
As the device size shrinks to nanosize scale, the quantum mechanical effect and atomic level fluctuations become important. The traditional TCAD based on continuous medium model will no longer work. T...
Inspiration at the atomic scale（图）
原子尺度 电子显微镜 纳米级 材料科学
2022/11/9
To explain why he loves electron microscopy, Associate Professor James LeBeau uses an analogy: He likens the technique, which uses beams of electrons to illuminate materials at a scale thousands of ti...
A combination of ecological field methods and cutting-edge artificial intelligence has helped an interdisciplinary research group detect eelgrass wasting disease at nearly three dozen sites along a 1,...
Nature may abhor a vacuum, but it sure loves structure. Complex, self-organized assemblies are found throughout the natural world, from double-helix DNA molecules to the photonic crystals that make bu...
Engineers enlist AI to help scale up advanced solar cell manufacturing（图）
人工智能 太阳能电池 钙钛矿材料 光伏电池 机器学习
2022/4/13
Perovskites are a family of materials that are currently the leading contender to potentially replace today’s silicon-based solar photovoltaics. They hold the promise of panels that are far thinner an...
为满足钍基熔盐堆物理设计和钍铀燃料循环物理分析对核数据的需求，中国核数据中心研制了一套钍铀燃料循环专用数据库CENDL-TMSR-V1。本文利用SCALE程序，针对熔盐堆开展了SCALE 6.1自带数据库和CENDL-TMSR-V1库对比分析。结果显示，针对1 GWt钍增殖熔盐堆，利用两个数据库的238群数据计算的不同燃耗下keff最大差异约1 200 pcm。结合核数据对keff的灵敏度分析显示...
BUILT-UP AREA DETECTION FROM HIGH-RESOLUTION SATELLITE IMAGES USING MULTI-SCALE WAVELET TRANSFORM AND LOCAL SPATIAL STATISTICS
Built-up Area Detection High-resolution Satellite Image Wavelet Transform Local Spatial Statistics
2018/4/30
Recently, built-up area detection from high-resolution satellite images (HRSI) has attracted increasing attention because HRSI can provide more detailed object information. In this paper, multi-resolu...
OPTIMAL INFORMATION EXTRACTION OF LASER SCANNING DATASET BY SCALE-ADAPTIVE REDUCTION
Multi-scale Surface variation Radial basis function Just-Noticeable-Difference Degradation
2018/4/30
3D laser technology is widely used to collocate the surface information of object. For various applications, we need to extract a good perceptual quality point cloud from the scanned points. To solve ...
AUTOMATIC MATCHING OF LARGE SCALE IMAGES AND TERRESTRIAL LIDAR BASED ON APP SYNERGY OF MOBILE PHONE
Mobile phone APP Images Laser Point Cloud Matching
2018/4/30
The digitalization of Cultural Heritage based on ground laser scanning technology has been widely applied. High-precision scanning and high-resolution photography of cultural relics are the main metho...
GRAPHICS-IMAGE MIXED METHOD FOR LARGE-SCALE BUILDINGS RENDERING
City 3D Graphic and Image Mixed Large-scale Scene Huge Data Urban Building
2018/3/30
Urban 3D model data is huge and unstructured, LOD and Out-of-core algorithm are usually used to reduce the amount of data that drawn in each frame to improve the rendering efficiency. When the scene i...