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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Random phase approximation for the mean-field electron gas （3）
平均场 电子气 随机相位近似
2023/11/29
Random phase approximation (RPA) was proposed by Bohm and Pines in four seminal papers during 1951-1953 to describe the correlation of fermions, namely the correction to the Hartree-Fock theory. While...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Heisenberg-Pauli-Weyl uncertainty principle based on Phase derivatives
相位导数 Heisenberg Pauli-Weyl不确定性原理
2023/11/13
In this talk we introduce some recent developments of Heisenberg-Pauli-Weyl uncertainty principle in the different settings.
If the USA were to shut down its nuclear power plants, the pollution from the coal, gas, and oil that would be used to make up the generation shortfall would result in a worsening of air quality that ...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：A decoupled, linear, and unconditionally energy stable finite element method for a two-phase ferrohydrodynamics model
两相铁 流体动力学模型 无条件能量稳定 有限元方法
2023/4/28
In this talk, we present numerical approximations of a phase-field model for two-phase ferrofluids, which consists of the Navier-Stokes equations, the Cahn-Hilliard equation, the magnetostatic equatio...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars： A decoupled, linear, and unconditionally energy stable finite element method for a two-phase ferrohydrodynamics model
两相铁流体 动力学模型 能量稳定 有限元方法
2023/4/28
In this talk, we present numerical approximations of a phase-field model for two-phase ferrofluids, which consists of the Navier-Stokes equations, the Cahn-Hilliard equation, the magnetostatic equatio...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Existence of phase transition for percolation using the Gaussian Free Field
高斯自由 伯努利渗透 相变存在
2023/5/8
In this talk, we prove that Bernoulli percolation on graph undergoes a non-trivial phase transition if the graph has bounded degrees and random walk on the graph has a heat kernel with rapid decay. Th...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：An active contour model with local variance force term and its efficient minimization solver for multi-phase image
局部方差力项 活动轮廓模型 多相图像 最小化求解器
2023/5/8
In this work, we propose an active contour model with a local variance force (LVF) term that can be applied to multi-phase image segmentation problems. With the LVF, the proposed model is very effecti...
Scientists capture first-ever view of a hidden quantum phase in a 2D crystal（图）
二维晶体 隐藏量子相 视图 单脉冲光谱技术
2023/6/6
The development of high-speed strobe-flash photography in the 1960s by the late MIT professor Harold “Doc” Edgerton allowed us to visualize events too fast for the eye — a bullet piercing an apple, or...
$8 Million State Grant Jump-Starts Next Phase of Renovations for Historic Eastman Theatre（图）
Eastman Theatre
2007/3/19
March 16, 2007，An $8 million commitment from New York State will make it possible for the University of Rochester and its Eastman School of Music to move forward on the second phase of renovations at ...
February 15, 2007，Smithfield Foods Inc., the nation's largest hog producer and a leading processor and marketer of fresh pork and processed meats, is phasing out individual gestation stalls and replac...
Occupational Safety & Health Administration Seeking Comments on Third Phase of Standards Improvement Process
health and safety standards employee protections
2006/12/29
WASHINGTON -- The Occupational Safety and Health Administration (OSHA) is seeking comments until Feb. 20, 2007, on phase three of its Standards Improvement Project (SIPs III), the third in a series of...
Phase-Two Selection Launched for NGOs in PRC Poverty Reduction Work
Poverty programs poor communities
2006/12/11
1 December 2006，BEIJING, PEOPLE’S REPUBLIC OF CHINA - ADB and its partners involved in a unique poverty reduction project in the People’s Republic of China (PRC) have launched the second round of a se...