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Sea level variations in the South china Sea inferred from satellite gravity,altimetry,and oceanographic data

science china Earth sciences 2012年第10期55卷 1696-1701页

作者： FENG Wei 1,2,ZHONG Min 1,3 & XU HouZe 1,3 1 State Key Laboratory of Geodesy and Earth’s Dynamics,institute of Geodesy and geophysics,Chinese Academy of sciences,wuhan 430077,china 2 Graduate university of Chinese Academy of sciences,Beijing 100049,china 3 institute of geophysics,huazhong university of science and technology,wuhan 430074,china 1. State Key Laboratory of Geodesy and Earth’s Dynamics Institute of Geodesy and Geophysics Chinese Academy of Sciences Wuhan 430077 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. Institute of Geophysics Huazhong University of Science and Technology Wuhan 430074 China

Sea level variations(SLVs) can be divided into two major components:the steric SLV and the mass-induced *** two components of SLV in the South china Sea(SCS) are studied by using satellite altimetry,GRACE(Gravity Recovery and Climate Experiment) satellite gravity,and oceanographic data on annual and inter-annual *** the annual timescale,the geographic distribution of mass-induced SLV's amplitude jointly estimated from altimetry and the ECCO(Estimation of the Circulation and Climate of the Ocean) model agrees very well with that from *** observes obvious seasonal mass-induced SLV in the SCS with annual amplitude of 2.7±0.4 cm,which is consistent with the annual amplitude of 2.7±0.3 cm estimated from the steric-corrected *** the inter-annual timescales,the mean SLV in the SCS shows a large oscillation,which is mainly caused by the steric *** trend of mean SLV inferred from altimetry in the SCS is 5.5±0.7 mm/yr for the period of 1993-2009,which is significantly higher than the global sea level rise rate of 3.3±0.4 mm/yr in the same *** is no obvious trend signal in the mass-induced SLV detected from GRACE that indicates the water exchange between the SCS and its adjacent seas and land is in balance within the study period.

关键词： altimetry GRACE ECCO the South china Sea sea level variation

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Simulation of the Earth' s gravitational field recovery from GRACE using the energy balance approach

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Progress in Natural science:Materials International 2005年第7期15卷 596-601页

作者： ZHENG Wei, LU Xiaolei, HSU Houtse, SHAO Chenggang, LUO Jun and WANG Nengchao ( Department of Physics, huazhong university of science and technology, wuhan 430074, china institute of Geodesy and geophysics, Chinese Academy of sciences, wuhan 430077, china Department of Mathematics, huazhong university of science and technology, wuhan 430074, china) Department of Physics Huazhong University of Science and Technology Wuhan 430074 China. Department of Mathematics Huazhong University of Science and Technology Wuhan 430074 China. institute of Geodesy and geophysics Chinese Academy of Sciences Wuhan 430077 China

Based on the measurement principles of GRACE satellites, the observation equations are set up using the energy balance approach. The Earth's gravitational field complete up to degree and order 120 is recovered applying the preconditioning conjugate gradient iterative approach by numerical simulation. Assuming an accuracy of 1 μm/s in range-rate measurements of the K-band microwave ranging system, the matching relationships of accuracies of K-band microwave ranging system, SuperSTAR Accelerometer, position vector and velocity vector measurements are investigated.

关键词： the Earth’s gravitational field GRACE satellites energy balance approach preconditioning conjugate gradient method.

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The characteristics of arc beam shaping in hybrid plasma and laser deposition manufacturing

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science china(Technological sciences) 2006年第2期49卷 238-247页

作者： ZHANG Hai’ou1, QIAN Yingping1,3, WANG Guilan1 & ZHENG Qiguang2 1. School of Material science and technology, huazhong university of science and technology, wuhan 430074, china 2. institute of Laser technology and Engineering, huazhong university of science and technology, wuhan 430074, china 3. Mechanical Engineering College, Hubei university of technology, wuhan 430068, china 1. School of Material science and technology Huazhong University of Science and Technology Wuhan 430074 China 3. Mechanical Engineering College Hubei University of Technology Wuhan 430068 China 2. institute of Laser technology and Engineering Huazhong University of Science and Technology Wuhan 430074 China

As a new direct metal prototyping technology,the hybrid plasma and laser deposition manufacturing (PLDM) is proposed in this paper. In order to figure out the characteristics of plasma arc beam and mould in the PLDM process of high temperature alloy, the high speed CCD camera is used to obtain the picture around the plasma arc. Afterwards the sketch of picture is clearly obtained. And the effect of laser parameter, such as average power, pulse width, pulse repetition frequency and the angle between laser beam and plasma arc beam on the plasma arc appearance, is studied experimentally. The results show that the modality of plasma arc beam is markedly influenced by laser beam. And the improvements of shape precision and surface state of the layer deposited by PLDM are confirmed.

关键词： plasma hybrid laser, direct deposition, plasma arc beam, molding character, high-temperature alloy.

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PARALLEL LATTICE BGK SIMULATION OF NATURAL CONVECTION IN A CAVITY

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Journal of Hydrodynamics 2005年第5期17卷 564-570页

作者： SHI Bao-chang LIU Hong-juan Parallel Computing institute Huazhong University of Science and Technology Wuhan 430074 China Department of Mathematics Huazhong University of Science and Technology Wuhan 430074 China

A Coupled Lattice Bhatnagar Gross Krook （CLBGK） model was proposed with a robust boundary scheme to model the Bossinesq incompressible flows. The LBGK method is a powerful approach, but is also computationally demanding. Therefore, parallel computing was implemented, and the codes were run on the parallel computer “Lenovo DeepComp 1800” with 24 nodes written in C＋＋ using the Message Passing Interface （MPI） library. Numerical results for natural convection in a cavity with the Rayleigh number （ Ra ） ranging from 10^6 to 4× 10^10 were presented, and found to agree well with the previous work. And with the increase of the resolution rate, the accuracy has been greatly improved. In addition, new models were set up by applying different equilibriums to the CLBGK model to simulate the same problem, which all yield sound results.

关键词： Lattice Bhatnagar Gross-Krook ( LB( K )model, Lattice Boltzmann Method (LBM), natural convection, parallel computing, high resolution

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Spiral waves in CIMA model and its LBGK simulation

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Communications in Nonlinear science and Numerical Simulation 2001年第2期6卷 68-73页

作者： Qing LI, Chuguang ZHENG and Nengchao WANG College of Computer science and technology, huazhong university of science and technology, wuhan 430074, china e-mail: qingli @ public. *** State Key Laboratory of Coal Combustion, huazhong university College of Computer science and technology Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Coal Combustion Huazhong University of Science and Technology Wuhan 430074 China Parallel Computation institute Huazhong University of Science and Technology Wuhan 430074 China

Two type of structures-Turing patterns and spiral waves-are obtained in chloride-iodide-malonic acid (CIMA) reaction-diffusion model by using lattice Bhatnagar-Gross-Krook (LBGK) method.

关键词： lattice Boltzmann method reaction-diffusion Turing patterns spiral waves

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Ti(C, N) BASED CERAMETS AND ITS FRACTAL ANALYSIS OF FRACTURE SURFACES

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中国有色金属学会会刊：英文版 1996年第2期6卷 101-104页

作者： Liu Ning(Department of Materials science and Engineering,Anhui institute of technology, Hefei 230069)Hu Zhenhua Cui Kun(huazhong university of science and technology, wuhan 430074) ANHUI INST TECHNOL DEPT MAT SCI & ENGNHEFEI 230069PEOPLES R CHINA huazhong UNIV SCI & TECHNOL WUHAN 430074PEOPLES R CHINA

Ｔｉ（Ｃ，Ｎ）ＢＡＳＥＤＣＥＲＡＭＥＴＳＡＮＤＩＴＳＦＲＡＣＴＡＬＡＮＡＬＹＳＩＳＯＦＦＲＡＣＴＵＲＥＳＵＲＦＡＣＥＳＬｉｕＮｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄＥｎｇｉｎｅｅｒｉｎ... 详细信息

Ｔｉ（Ｃ，Ｎ）ＢＡＳＥＤＣＥＲＡＭＥＴＳＡＮＤＩＴＳＦＲＡＣＴＡＬＡＮＡＬＹＳＩＳＯＦＦＲＡＣＴＵＲＥＳＵＲＦＡＣＥＳＬｉｕＮｉｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＭａｔｅｒｉａｌｓＳｃｉｅｎｃｅａｎｄＥｎｇｉｎｅｅｒｉｎｇ，Ａｎｈｕｉｉｎｓｔｉｔｕｔｅｏ...

关键词： Ti(C, N) based ceramets fracture surface fractal analysis

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CAD/CAE OF THE WORKING CHARACTERISTICS OF A NEW TYPE OF FLUID COUPLING SHOCK ABSORBER

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Chinese Journal of Mechanical Engineering 2002年第3期15卷 222-227页

作者： Yang Ping Zhong Yifang Zhou JiSchool of Mechanical science and Engineering, huazhong university of science and technology,wuhan 430074, chinaLiu Yong Guilin institute of Electronic technology *** School of Mechanical science and Engineering Huazhong University of Science and Technology Wuhan 430074 China

For purpose of simulation of the working characteristics of a new type offluid coupling shock absorber for vibration protection of sensitive equipment, a physical model ispresented by analyzing the internal fluid dynamic phenomenon with respect to the coupling shockabsorber and implemented in MATLAB software package. Using the model it is possible to evaluate theimportance of different factors for design of the shock absorber. In the meantime, the key-modelmachine is designed for coupling dynamic test. Comparisons with experimental results confirm thevalidity of the model. So the CAD/CAE software has been developed in MATLAB for design andexperimental test of the new coupling shock absorber.

关键词： Fluid coupling shock absorber Working characteristics Model Simulation

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HALF-SPACE GREENS'S FUNCTION DUE TO A SPATIALLY HARMONIC LINE LOAD AND SCATTERED FIELDS IN THE FAR FIELD REGION

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Acta Mechanica Solida Sinica 1997年第1期10卷 56-65页

作者： Peng Zhu(Changsha Communication institute.Changsha 4110076.china)Li Zailiang(huazhong university of science and technology.wuhan 430074,china) CHANGSHA COMMUN INST CHANGSHA 410076PEOPLES R CHINA huazhong UNIV SCI & TECHNOL WUHAN 430074PEOPLES R CHINA

Half-space Green's function due to a spatially harmonic line load has been expressed as a sum of the full-space Green's functions and a 2-D integral representation of the reflected waves by the free surface of the *** using the obtained half-space Green's function,an integral rep- resentation of the scattered waves by a cylindrical obstacle is then ***,by analyzing the far-zone behavior of the integrands of the integral *** far-field pattern of the scattered waves in a half-space obtained.

关键词： spatially harmonic line load half-space Green's function far-field of scattered waves

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Ca^(2+) signals induced from calcium stores in pancreatic islet β cells

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Chinese science Bulletin 2000年第1期45卷 51-56页

作者： ZENG Xuhui, QU Anlian, LOU Xuelin, XU Jianhua, WANG Junjian, WU Hongxiu & ZHOU Zhuan1. institute of Biochemistry and Biophysics, huazhong university of science and technology, wuhan 430074, china 2. Pharmacology, huazhong university of science and technology, wuhan 430074, china 3. School of Life sciences, university of science and technology of china, Hefei 230027, china Correspondence should be addressed to Zhou Zhuan. institute of Biochemistry and Biophysics Huazhong University of Science and Technology Wuhan China Pharmacology Huazhong University of Science and Technology Wuhan China School of Life sciences University of Science and Technology of China Hefei China

In single rat pancreatic βcells, using fura-2 microfluorometry to measure [Ca2+] response upon different stimuli, the ways of calcium regulation have been studied. When the extracellular calcium concentration was 2.5 mmol/L, either 60 mmol/L KCI, 20 mmol/L D-glucose or 0.1 mmol/L tolbutamide induced increase in [Ca2+]. Such increase in [Ca2+] was absent when the same stimuli were applied under zero extracellular calcium. These results indicate that the increase of [Ca2+] is induced by the activation of voltage-dependent calcium channels in p celis. The manifold forms of [Ca2+] change induced by glucose imply that the effects of glucose are complex. 5 mmol/L caffeine or 5 mmol/L MCh increase the [Ca2+], which is independent of the external calcium, suggesting that [Ca2+] can be regulated by Ca2+ release from not only the IP3-sensitive but also the ryanodine sensitive calcium stores in p celis. The latency of Ca responses for IP3 pathway (5 s) is faster than that for ryanodine pathway (30 s), it is

关键词： pancreatic β cell [Ca2+]i calcium stores glucose fura-2.

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Particle swarm optimization algorithm for partner selection in virtual enterprise

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Progress in Natural science:Materials International 2008年第11期18卷 1445-1452页

作者： Qiang Zhao~a Xinhui Zhang~(b,*) Renbin Xiao~c a School of Mechanical science and Engineering,huazhong university of science and technology,wuhan 430074,china b Department of Biomedical,Industrial & Human Factors Engineering,Wright State university,Dayton,OH 45435,USA c institute of Systems Engineering,huazhong university of science and technology,wuhan 430074,china School of Mechanical science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Department of Biomedical Industrial & Human Factors Engineering Wright State University Dayton OH 45435 USA institute of Systems Engineering Huazhong University of Science and Technology Wuhan 430074 China

Partner selection is a fundamental problem in the formation and success of a virtual *** partner selection problem with precedence and due date constraint is the basis of the various extensions and is studied in this paper.A nonlinear integer program model for the partner selection problem is *** problem is shown to be NP-complete by reduction to the knapsack problem,and therefore no polynomial time algorithm *** solve it efficiently,a particle swarm optimization(PSO)algorithm is adopted,and several mechanisms that include initialization expansion mechanism,variance mechanism and local searching mechanism have been developed to improve the performance of the proposed PSO algorithm.A set of experiments have been conducted using real examples and numerical simulation,and have shown that the PSO algorithm is an effective and efficient way to solve the partner selection problems with precedence and due date constraints.

关键词： Virtual enterprise Partner selection PSO NP-complete

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