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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Weak multisymplectic spectral integrators with a resolution of Gibbs phenomenon
吉布斯现象 分辨率 弱多辛谱 积分器
2023/4/28
We will report our recent work on weak multisymplectic spectral integrators for a wide range of nonsmooth Hamiltonian partial differential equations, which appear in quite a few physical applications ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Defocusing NLS equation with nonzero background: Soliton resolution in soliton region
非零背景 散焦NLS方程 孤子区域 孤子分辨率
2023/5/5
Consider to the Cauchy problem of the defocusing NLS equation with a nonzero background. With the Dbar generalization of the nonlinear steepest descent method to compute the leading order approximatio...
Credit card-sized device focuses terahertz energy to generate high-resolution images（图）
设备聚焦 太赫兹能量 高分辨率图像
2023/6/9
Researchers have created a device that enables them to electronically steer and focus a beam of terahertz electromagnetic energy with extreme precision. This opens the door to high-resolution, real-ti...
In 2018, Cornell researchers built a high-powered detector that, in combination with an algorithm-driven process called ptychography, set a world record by tripling the resolution of a state-of-the-ar...
High-resolution images herald new era in Earth sciences
planetary sciences Earth sciences seismology
2007/4/9
April 6, 2007,High-resolution images that reveal unexpected details of the Earth's internal structure are among the results reported by MIT and Purdue scientists in the March 30 issue of Science.
08 March 2007，BERKELEY – A year after the United Nations Security Council unanimously adopted the "Responsibility to Protect" resolution, human rights groups are pressing world leaders to act on their...
Bronson Sponsors Resolution Supporting National Consumer Protection Week
consumer protection
2007/2/7
01-30-2007，TALLAHASSEE - Florida Department of Agriculture and Consumer Services Commissioner Charles H. Bronson is urging people to be proactive in getting and sharing information about consumer prot...
Director General Response to Security Council Resolution on Iran
nuclear issue Security Council
2006/12/25
23 December 2006，The Agency will implement the relevant parts of the UNSC resolution that relates to its work. The Director General believes that a long term solution to the Iranian nuclear issue has ...