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Application of nonlinear optimization method to sensitivity analysis of numerical model

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Progress in Natural Science:Materials International 2004年第6期 84-87页

作者： XU Hui 1.MU Mu 1.* and LUO Dehai 2.1. LASG,institute of Atmospheric {1.,Chinese Academy of Sciences,Beij.ng 1.002.,china 2. {3. of Atmosphere Sciences,Ocean university of{13.,Qingdao 2.6003.china) LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China department of Atmosphere Sciences Ocean University of China Qingdao 266003 China

A nonlinear optimization method is applied to sensitivity analysis of a numerical model. theoretical analysis and numerical experiments indicate that this method can give not only a quantitative assessment w.ether the numerical model is able to simulate the observations or not,but also the initial field that yields the optimal simulation. In particular,w.en the simulation results are apparently satisfactory,and sometimes both model error and initial error are considerably large,the nonlinear optimization method,under some conditions,can identify the error that plays a dominant role.

关键词： sensitivity analysis nonlinear optimization adj.int method numerical model.

Self-Organization of PbS into Quantum Dots Superlattices

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Chinese Chemical Letters 2000年第7期11卷 627-630页

作者： Lian Zeng YAO Chang Hui YE Chi mei MO Ye ZHANG Li De ZHANG({1. of Materials Science and Engineering, {2. of Science and Technology of{3., Hefei 2.002. {3. of Solid State physics, Chinese Academy of Sciences, Hefei 2.003.1} Univ Sci & Technol china Dept Mat Sci & Engn Hefei 230026 Peoples R China Chinese Acad Sci Inst Solid State Phys Hefei 230031 Peoples R China

Self-organization of PbS into quantum dots superlattices is demonstrated for the first lime, and hexaplanar colloidal crystals 1.1. mu m in size made from PbS quantum dots 4nm in di{2.eter are sho{3. in Transmission Electron Microscope (TEM) micrograph, and the inner structures of the superlattices can be seen from the High Resolution Transmission Electron Microscope (HRTEM).

关键词： self-organization quantum dots PbS superlattices

Computational stability of the forced dissipative nonlinear atmospheric equations

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Chinese Science Bulletin 1999年第10期44卷 949-952页

作者： LI j.anping and CHOU j.fan LASG , {2. of Atmospheric {{3. , Chinese Academy of Sciences , Beij.ng {3.0080, china department of Atmospheric Sciences , Lanzhou university , Lanzhou 73.000, china Beij.ng Meteorological College, Beij.ng {3.008{3. china LASG Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China department of Atmospheric Sciences Lanzhou University Lanzhou China Beij.ng Meteorological College Beijing China

A new.concept of computational quasi-stability (CQS) is introduced to study the computational stability (CS) of the forced dissipative nonlinear (FDN) evolution equations. Based on the concept, the CQS criterion of difference scheme of FDN atmospheric equations is obtained. So it provides the theoretical basis for designing the computational stable difference scheme of FDN atmospheric equations.

关键词： computational stability (CS) computational quasi-stability (CQS) operator equation difference scheme forced dissipative nonlinear (FDN) equations.

Exact Solution to(1.1.-Dimensional Higher-Order SchrSdinger Equation via an Extended Mapping Approach

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Communications in theoretical {1. 2006年第1期45卷 127-130页

作者： ZHU Hai-Ping~1.ZHENG Chun-Long~(1.2.+) FANG {2.an-Ping~1. department of {1.,Zhe{2.ang Lishui university,Lishui 3.2}000,china2.Shanghai institute of Applied Mathematics and Mechanics,Shanghai university,Shanghai 2.0072.china

Starting from a special variable transformation and w.th the help of an extended mapping approach,the high-order Schr■dinger equation(n=3.4)is solved.A new.f{2.ily of variable separation solutions w.th arbitraryfuncti... 详细信息

关键词： extended mapping approach Schr■dinger equation exact solution

Vibration parameter measurement using the temporal digital hologram sequence and {2.ndo{2.d Fourier transform

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theoretical & Applied Mechanics Letters 2011年第5期1卷 36-40页

作者： Chong Yang,1.2.and Hong Miao 1.1. Key Laboratory of Mechanical Behavior and Design of Materials (CAS) department of Modern Mechanics,{1. of Science and Technology of china,Anhui 2.002.,china 2. institute of Structural Mechanics Chinese Academy of Engineering physics,Sichuan 62.0}00,china institute of Structural Mechanics Chinese Academy of Engineering {1. Sichuan 621900 China

Real time digital recording and numerical reconstruction of a temporal digital hologram sequence have become feasible in recent *** provide a new.measurement method w.ich en{3.ys the valuable advantages of being full-field,noncontact and high *** this paper,a combined method of temporal digital hologram sequence and w.ndow.d Fourier transform is proposed to measure the kinematic parameters of random vibration.A series of holograms are recorded by CCD camera and the original phase can be reconstructed by Fresnel reconstruction *** three-dimensional w.ndow.d Fourier transform is used to filter noise in phase and extract the instantaneous kinematic parameters of the specimen,such as the displacement,velocity and *** experiment is conducted on a chloroprene rubber latex *** demonstrate that the proposed method determines the vibration parameters precisely and en{3.ys many merits.

关键词： vibration measurement digital holography temporal digital hologram sequence w.ndow.d Fourier transform

GIANT　MAGNETO-IMPEDANCE　IN　Fe-BASED　SOFT　FERROMAGNETIC　RIBBONS

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原子与分子物理学报 1997年第2期 16-25页

作者： Chen Chen mei Liangmo {1. of {2., Shandong {3., j.nan 2.01.0, P.R.china Guo Huiqun Zhao j.angao State Key Lab. of Magnetism, institute of {2., Chinese Academy of Sciences, Beij.ng 1.0080, P.R.china

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关键词： Giant magneto impedance Soft ferromagnetic ribbons (MI) phenomena Fe 73.5 CuNb 3.i 1..5 B 9 Fe 88 Zr 7B 4Cu

Quantifying the strength of magnetic fields using baryon electric charge correlation

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Nuclear Science and Techniques 2024年第8期35卷 5-8页

作者： Xu‑Guang huang physics {1. and Center for Particle physics and Field Theory Fudan UniversityShanghai 200433China Key Laboratory of Nuclear physics and Ion‑beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Research Center for theoretical Nuclear {1. National Natural Science Foundation of China and Fudan UniversityShanghai 200438China

Although heavy-ion collisions generate strong magnetic fields,their direct measurement is a challenging task.A new.observable,the baryon electric charge correlation,w.s recently found to be sensitive to the magnetic field strength and thus could be used as a magnetometer for heavy-ion ***,this observable may shed light on the equation of state and phase structure of quantum chromodyn{2.ics(QCD)under magnetic *** and understanding the phase structure of quantum chromodyn{2.ics(QCD)is important in contemporary physics[1..

关键词： charge observable magnetic

Absorption Cross Section of Einstein-Maxw.ll Dilation Axion Black Hole for Dirac Particles

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Communications in theoretical {1. 2007年第12期48卷 1051-1054页

作者： LIU Chang-Qing j.NG j.-Liang {2. of {{3. and department of {{3.,Hunan Normal university,Changsha 4{3.08{3.china institute of {1. and {2. of {1. Hunan Normal University

The absorption cross section of the Einstein-Maxw.ll Dilaton Axion (EMDA) black hole for Dirac particlesis *** is show. that the absorption cross section decreases as both the v and the absolute value of the dilatonincrease,but it increases as the mass of the particle *** is also show. that the absorption cross section for themassless Dirac particles is {3.8 of the area of the horizon,w.ich may be an universal property for minimally coupledmassless Dirac particles.

关键词： black hole absorption cross section Dirac particle

Status of theoretical Study on Superheavy Nuclei

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Status of Theoretical Study on Superheavy Nuclei