搜索结果: 1-15 共查到“物理学 FAST”相关记录59条 . 查询时间(0.178 秒)
Discovery reveals a reversible magnetic field around a fast radio burst for the first time
快速射电暴 可逆磁场 无线电波闪光
2023/5/15
An international team of researchers has revealed new evidence on the nature of mysterious fast radio bursts (FRBs) – objects in space that produce brief, intense flashes of radio waves from distant g...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Fast Magnetic Resonance Imaging and Inverse Problems
快速 磁共振成像 逆问题
2023/4/17
磁共振成像是目前医学成像技术中功能最强大，技术门槛最复杂的技术之一。然而，相对其他成像模态较为缓慢的采集速度（较长的扫描时间）制约了磁共振成像在临床上的广泛应用。借助采样样本的数量与扫描时间的正比关系，通过减少采集的数据量（稀疏采样）来缩短磁共振采集时间是磁共振成像领域的重要途径，而从高度欠采样的数据中重建出高质量的图像可以近似为一个病态反问题，对这一问题的求解是快速磁共振成像领域的研究热点。本次...
Russia's Rosatom and China's Atomic Energy Authority (CAEA) have signed a Comprehensive Programme for Long-Term Cooperation in the field of fast-neutron reactors and closing the nuclear fuel cycle.
FAST电子学实验室和光电测距实验室喜获CMA资质认定
FAST 电子学实验室 光电测距实验室 CMA资质认定
2023/1/11
2022年11月8-9日，FAST电子学实验室和光电测距实验室依托国家天文台所级公共技术服务中心检验检测平台，通过了国家市场监督管理总局进行的检验检测机构资质认定（CMA）扩项现场评审，并于12月6日喜获国家市场监督管理总局颁发的CMA资质认定证书。
Fast-track control accelerates switching of quantum bits
Fast-track control accelerates switching quantum bits
2016/12/27
From laptops to cellphones, today’s technology advances through the ever-increasing speed at which electric charges are directed through circuits. Similar advances can happen in the emerging field of ...
Practical and Fast Quantum Random Number Generation Based on Photon Arrival Time Relative to External Reference
Practical Fast Quantum Random Number Generation Photon Arrival Time Relative External Reference
2016/1/22
We present a practical high-speed quantum random number generator, where the timing of single-photon detection relative to an external time reference is measured as the raw data. The bias of the raw d...
LIGHT GOES INFINITELY FAST WITH NEW ON-CHIP MATERIAL
LIGHT GOES INFINITELY FAST ON-CHIP MATERIAL
2015/11/12
Electrons are so 20th century. In the 21st century, photonic devices, which use light to transport large amounts of information quickly, will enhance or even replace the electronic devices t...
Tem-fast: a useful tool for hydro-geologists and environmental engineers
electromagnetic sounding hydrogeology environment resistivity measurements
2015/9/29
Time Domain Electromagnetic (TDEM) methods have proven to be efficacious in many studies involving environmental and engineering problems, producing better results than the traditional galvanic techni...
Fast representation of dipole-dipole geoelectrical data with pseudosections for regional surveys
Electrical sounding dipole-dipole methods apparent resistivity deep sounding data processing
2015/9/28
I propose a fast method for constructing pseudosections of apparent resistivity from geoelectrical data collected for deep studies with continuous polar dipole-dipole arrays. Once a vertical section i...
FAST CORRESPONDENCE SEARCH FOR 3D SURFACE MATCHING
Least squares 3D surface matching Point clouds Registration Laser scanning Correspondence searching
2015/8/13
An algorithm for least squares matching of overlapping 3D surfaces is presented. It estimates the transformation parameters between
two or more fully 3D surfaces, using the Generalized Gauss-Markoff ...
CHAMPAIGN, Ill. — Tiny, thin microtubes could provide a scaffold for neuron cultures to grow so that researchers can study neural networks, their growth and repair, yielding insights into treatment fo...
Fast-ignition design transport studies: realistic electron source, integrated PIC-hydrodynamics, imposed magnetic fields
Fast-ignition design transport realistic electron source integrated PIC-hydrodynamics imposed magnetic fields
2012/5/29
Transport modeling of idealized, cone-guided fast ignition targets indicates the severe challenge posed by fast-electron source divergence. The hybrid particle-in-cell [PIC] code Zuma is run in tandem...
Competition between electronic Kerr and free carrier effects in an ultimate-fast optically switched semiconductor microcavity
electronic Kerr free carrier effects semiconductor microcavity Optics
2012/5/17
We have performed ultrafast pump-probe experiments on a GaAs-AlAs microcavity with a resonance near 1300 nm in the "original" telecom band. We concentrate on ultimate-fast optical switching of the cav...
Robust Repetitive Controller for Fast AFM Imaging
Robust Repetitive Controller Fast AFM Imaging Atomic Physics
2012/4/24
Currently, Atomic Force Microscopy (AFM) is the most preferred Scanning Probe Microscopy (SPM) method due to its numerous advantages. However, increasing the scanning speed and reducing the interactio...
Analysis of a Fast Fourier Transform Based Method for Modeling of Heterogeneous Materials
Homogenization Fast Fourier Transform Conjugate Gradients
2011/8/18
Abstract: The focus of this paper is on the analysis of the Conjugate Gradient method applied to a non-symmetric system of linear equations, arising from a Fast Fourier Transform-based homogenization ...