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Mesozoic subduction-accretion zone in northeastern South china Sea inferred from geophysical interpretations

Science china Earth Sciences 2006年第5期49卷 471-482页

作者： ZHOU Di1, WANG Wanyin2. WANG Jialin3, PANG Xiong4, CAI Dongsheng5.& SUN Zhen1 1. Key Laboratory of Marginal Sea Geology, South china Sea Institute of Oceanology, Chinese Academy of Sciences, Guang- zhou 5.0301, china 2. college of Geological and Topographical engineering, Chang’an University, Xi’an 71005., china 3. Key Laboratory of Marine Geology, Tongji University, Shanghai 2.0092. china 4. china National Offshore Oil Co. Limited – Shenzhen Branch, Shenzhen 5.8067, china 5. china National Offshore Oil Co. Limited – Research Center, Beijing 10002., china 1. Key Laboratory of Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China 2. college of Geological and Topographical engineering Chang’an University Xi’an 710054 China 3. Key Laboratory of Marine Geology Tongji University Shanghai 200092 China 4. china National Offshore Oil Co. Limited — Shenzhen Branch Shenzhen 518067 China 5. china National Offshore Oil Co. Limited — Research Center Beijing 100027 China

A segment of Mesozoic subduction-accretion zone was inferred across thenortheastern South china Sea at approximately NE45. orientation. Basic evidence includes thefollowing: A belt of peek gross horizontal Bouguer gravity gradient (PGHGBA) is comparable in sizeand intensity to that of the Manila subduction-accretion zone. A belt of high positive magneticanomalies appears to the north and sub-parallel to the PGHGBA, representing the volcanic arcassociated to the subduction zone. The PGHGBA crosses obliquely both Cenozoic structures and presentseafloor topography, indicating a pre-Cenozoic age. The segment is offset left-laterally byNW-running strike-slip faults, in concord with the Mesozoic stress field of South china. Inaddition, the existence of the subduction zone is supported by wide-angle seismic data obtained indifferent years by different institutions. At approximate localities, a north-dipping ramp of Mohosurface is indicated by records of ocean-bottom seismometers, and a strong reflector about 8 kmbeneath the Moho reflector is indicated by both OBS and long-cable seismic records. Theidentification of a segment of Mesozoic subduction zone in NE South china Sea fills nicely the gapof the Great Late Mesozoic Circum SE Asia Subduction-acrretion Zone, which extended from Sumatra,Java, SE Kalimantan to N Palawan, and from Taiwan, Ryukyu to SW Japan.

关键词： Mesozoic, subduction zone, SE Asia, NE South china Sea, geophysics.

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New method for passive radar seeker to antagonize non-coherent radar decoy

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Journal of Systems engineering and Electronics 2010年第3期21卷 397-403页

作者： Weijian Si,Xicai Si,and Zhiyu Qu college of information and Communication {2.,Harbin {2. University,Harbin 15.001,P.R.china college of information and Communication {2. Harbin Engineering UniversityHarbin 150001P.R.China

Using super resolution direction of arrival（DOA） estimation algorithm to reduce the resolution angle is an effective method for passive radar seeker（PRS） to antagonize non-coherent radar *** the power and correlation property between radar and non-coherent decoy,an improved subspace DOA estimation method based on traditional subspace algorithm is *** this new method uses the invariance property of noise subspace,compared with traditional MUSIC algorithm,it shows not only better resolution in condition of closely spaced sources,but also superior performance in case of different power or partially correlated *** this new method,PRS can distinguish radar and non-coherent decoy with good *** the simulation result and the experimental data confirm the performance of the method.

关键词： radar countermeasures passive radar seeker(PRS) non-coherent decoy direction of arrival(DOA) estimation.

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THE LIMITING CASE OF THIELE'S INTERPOLATING CONTINUED FRACTION EXPANSION

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Journal of Computational Mathematics 2001年第4期19卷 433-444页

作者： Jie-qing Tan (Institute of Applied Mathematics, college of Science and CAD/CG Division college of Computer & {2. Hefei, University of technology, Hefei 2.0009, china) 中国科学技术大学安徽合肥 230009

By means of the determinantal formulae for inverse and reciprocal differences with coincident data points, the limiting case of Thiele's interpolating continued fraction expansion is studied in this paper and given numerical example shows that the limiting Thiele's continued fraction expansion can be determined once for all instead of carrying out computations for each step to obtain each convergent as done in [3].

关键词： Continued fraction Inverse difference Reciprocal difference Expansion.

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Fractal on Particle Movement in Storm Steady Current Field of the Permian in Xingwen World Geopark

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四川地质学报 2009年第S1期29卷 145-152页

作者： LIU Zuhan 1,ZHANG Bin 1,WANG Lili 2.SHUI Wei 3,OUYANG-Shujian 3(1.Land and Resources college,china West Normal University,Nanchong 637002.china 2.information Management college,{5. University of technology,{5.,610059,china 3.Agronomy college,sichuan Agricultural University,Ya’an,62.5}14,china)

The particle is not the continuous but fractal *** has a diverse scale from several to *** different density function of the particle system,mutual influences among factors can be get;especially in the micro aspect,fractal dimension of particle radius distribution influences the system and has a significance to denote the fluidity of the *** influences among the particle size,spatial coordinates,density(or concentration) and time are analyzed theoretically and *** to first-grade reaction diffusion model of fractal medium DLK model,the movement of the Brown particle and thermodynamics theory of mechanics can be popularized to the storm current field and gets Γ(t)-D model.

关键词： particle stable current field fractal dimension Xingwen

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Performance analysis of network coding for multicast relay system over Nakagami-m fading channels

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Science china(information Sciences) 2011年第11期54卷 2338-2348页

作者： ZHAO Rui 1,YANG LvXi 2.& HUANG YongMing 2.1 School of information Science and engineering,Huaqiao University,Xiamen 36102.,{2. 2.School of information Science and engineering,Southeast University,Nanjing 2.0096,{2. 1. School of information Science and engineering Huaqiao University Xiamen 361021 China2. School of Information Science and Engineering Southeast University Nanjing 210096 China

The outage probability performance of network coding for multicast relay system is analyzed in Nakagami-m fading *** transmission strategies,i.e.,complex field network coding (CFNC) and amplify-and-forward network coding (AFNC),are applied in the system,and the approximate expressions of outage probability are derived at high SNR and the conclusion is reached that the system diversity gains of two transmission strategies are both 2.,as is verified by numerical *** results also show that CFNC can outperform both AFNC and direct transmission without relay in the performances of system outage probability,sum rate and symbol error ratio.

关键词： multicast relay system network coding outage probability diversity gain

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Predictor-corrector interior-point algorithm for linearly constrained convex programming

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Journal of Central South University 2001年第3期13卷 208-212页

作者： LIANG Xi-ming (college of information Science & {2., Central South University, Changsh a 410083, china) 1. college of information Science & {2. Central South University 410083 Changsha China

Active set method and gradient projection method are curre nt ly the main approaches for linearly constrained convex programming. Interior-po int method is one of the most effective choices for linear programming. In the p aper a predictor-corrector interior-point algorithm for linearly constrained c onvex programming under the predictor-corrector motivation was proposed. In eac h iteration, the algorithm first performs a predictor-step to reduce the dualit y gap and then a corrector-step to keep the points close to the central traject ory. Computations in the algorithm only require that the initial iterate be nonn egative while feasibility or strict feasibility is not required. It is proved th at the algorithm is equivalent to a level-1 perturbed composite Newton method. Numerical experiments on twenty-six standard test problems are made. The result s show that the proposed algorithm is stable and robust.

关键词： linearly constrained convex programming predictor corrector interior point algorithm numerical experiment

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Analysis on crossover probability estimation using LDPC syndrome

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Science china(information Sciences) 2011年第9期54卷 1895-1904页

作者： FANG Yong college of information {2.,Northwest A&F University,Yangling 712.00,china 1. college of information {2. Northwest A&F University Yangling 712100 China

Correlation estimation is a critical issue that impacts the application of Slepian-Wolf coding (SWC) in *** online correlation estimation is a type of newly-appearing approaches,in which the decoder estimates the virtual correlation channel between two correlated sources using both side information and the compressed SWC bitstream of the *** the compressed SWC bitstream usually contains partial information of the source,the emergence of dynamic online correlation estimation is helpful to solving the problem of correlation estimation in the SWC and further makes the SWC ***,the SWC is usually implemented by LDPC *** this case,the SWC bitstream is just the LDPC syndrome of the *** has been revealed that there are residual redundancies in LDPC syndromes,which can be used to estimate the crossover probability between two correlated binary ***,this algorithm has not been well justified *** paper makes use of the central limit theorem (CLT) to establish a mathematic model for analyzing the performance of this ***,for irregular LDPC codes,the optimization of weight vectors is discussed in *** experimental results are provided to validate the analysis.

关键词： distributed source coding Slepian-Wolf coding LDPC syndrome correlation estimation

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小波包对叠前地震面波的分离与信号重建

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石油地球物理勘探 2002年第5期37卷 460-462,472页

作者：王振国周熙襄钟本善成都理工大学

王振国 ,周熙襄 ,钟本善 .小波包对叠前地震面波的分离与信号重建 .石油地球物理勘探 ,2.0 0 2.,37(5.) :4 6 0～ 4 6 2.,4 72.　面波在地震勘探中是一种很强的干扰波 ,一般的处理方法有 :一维滤波、F - K滤波、τ- p变换等 ,但这些方... 详细信息

王振国 ,周熙襄 ,钟本善 .小波包对叠前地震面波的分离与信号重建 .石油地球物理勘探 ,2.0 0 2.,37(5.) :4 6 0～ 4 6 2.,4 72.　面波在地震勘探中是一种很强的干扰波 ,一般的处理方法有 :一维滤波、F - K滤波、τ- p变换等 ,但这些方法都侧重于考虑某一方面的单一特性或某种条件假设 ,因而具有一定的局限性。小波包变换是一种时频分析的方法 ,它能够对地震资料进行时频精细划分 ,并且可以分离出面波 ,然后经过小波包重构 ,可有效地剔除面波。小波包变换是一种十分有效的去噪方法。

关键词：小波包叠前地震面波分离信号重建地震勘探时频分析小波函数正交分解

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Survey of Unicast and Multicast Scheduling Algorithms for High Speed Input Queued Switch with Crossbar

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计算机工程 2002年第S1期28卷 113-119页

作者： E Dawei ,(information engineering {2. of Jimei UniversityXiamen 36102., china) information engineering {2. of Jimei University Xiamen 361021 China

The performance of ATM switches are mainly influenced by switching fabric and scheduling algorithms. Input buffered switches have the strong advantage of efficient crossbar usage. This paper presents an input-queued crossbar switches fabric supporting high speed switching, analyzes the scheduling algorithms for unicast trafficts and multicast traffic based on virtualoutput queueing (VOQ).Focusing on their performance issues, some typical schedulers are compared.

关键词： Switch fabrics Input-queued Unicast and multicast Scheduling algorithms

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Group sparse representation for image categorization and semantic video retrieval

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Science china(information Sciences) 2011年第10期54卷 2051-2063页

作者： LIU YaNan 1,2.,WU Fei 2.& ZHUANG YueTing 2.1 School of information,Zhejiang University of Finance & Economics,Hangzhou,310018,china 2.{2. of Computer Science and technology,Zhejiang University,Hangzhou,310012.china 1. School of information Zhejiang University of Finance & Economics Hangzhou 310018 China2. College of Computer Science and Technology Zhejiang University Hangzhou 310012 China

Multimedia content analysis and management are a promising and challenging *** this paper we develop a novel approach to image representation,which we call group sparse representation (GSR),for image classification and video *** basic idea is to represent a test image as a weighted combination of all the training *** particular,we introduce two sets of weight coefficients,one for each training image and the other for each ***,we formulate our concern as a group nonnegative garrote *** resulting representations are sparse,and they are appropriate for discriminant *** on Caltech101 and PASCAL VOC2.08 image dataset and TRECVID2.05.video corpus testify that our proposed approach is efficient and effective.

关键词： compressive sensing group sparse representation bag-of-SIFT-words nonnegative garrote l1-minimization apcluster

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