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| 1 | A level set method to reconstruct the discontinuity of the conductivity in EIT显示文摘In this paper, one level set method is applied to finding the interface of discontinuity of the conductivity in EIT(electrical impedance tomography) problem. By choosing one suitable velocity function, a level set reconstruction algorithm is proposed. The theoretical results for EIT problem and regularization are given. Finally the numerical examples demonstrate that the reconstruction algorithm is effcient and stable. | CHEN WenBin CHENG Jin LIN JunShan WANG LiFeng | 2009 | Science China Mathematics2009，52，1： | 6 |
| 2 | Nolinear design of active suspensions 显示文摘 | Lin Junshan Kanellakopoulos I | 1997 | Control Systems Magazine Institute for Electrical and Electronic Engineers (IEEE)1997，17，3： | 1 |
| 3 | Mode matching for the electromagnetic scattering from three dimensional large cavities显示文摘 | Bao Gang Gao Jinglu Lin Junshan | 2012 | IEEE Trans on Antennas and Propagation2012，60，4： | 1 |
| 4 | EFFECT OF REINFORCEMENT VOLUME FRACTION ON PRECIPITATION IN MATRIX OF SiC_p/AI COMPOSITE显示文摘The differential scanning calorimetric(DSC) and transmission electron microanalysis(TEM) techniques were used to study the kinetic process of precipitation in matrix ofcast SiCp/2024 composites.The results showed that precipitation reactions of GPzone and intermediate phase S’(Al2CuMg)in the composites were accelerated comparedwith SiC-free material,the peak temperatures of both reactions were decreased.Thereaction enthalpies of both the GP zone and intermediate phase S’ formation in thematrix were substantially decreased after the addition of SiC.TEM analysis found thatthe alloying element Mg segregated at the SiC/Al interfaces,and was depleted in thematrix near the interface.The precipitation-free zones(PFZ) and precipitation-sparsezones(PSZ) formed near the interfaces,as a results,the volume fraction of precipitatesin matrix was reduced. | LIN Junshan LI Pengxing WU Renjie Shanghai Jiao Tong University,Shanghai,China postdoctoral,Institute of Composite Materials,Shanghai Jiaotong University,Shanghai 200030,China | 1993 | Acta Metallurgica Sinica(English Letters)1993，6，8： | 1 |
| 5 | The influence of TXNDC5 gene on gastric cancer cell显示文摘 | Lin Zhang Yanhong Hou Nan Li Kai Wu Junshan Zhai | 2010 | Journal of Cancer Research and Clinical Oncology2010，，10： | 1 |
| 6 | Variable Stiffness Identification and Configuration Optimization of Industrial Robots for Machining Tasks显示文摘Industrial robots are increasingly being used in machining tasks because of their high flexibility and intelligence.However,the low structural stiffness of a robot significantly affects its positional accuracy and the machining quality of its operation equipment.Studying robot stiffness characteristics and optimization methods is an effective method of improving the stiffness performance of a robot.Accordingly,aiming at the poor accuracy of stiffness modeling caused by approximating the stiffness of each joint as a constant,a variable stiffness identification method is proposed based on space gridding.Subsequently,a task-oriented axial stiffness evaluation index is proposed to quantitatively assess the stiffness performance in the machining direction.In addition,by analyzing the redundant kinematic characteristics of the robot machining system,a configuration optimization method is further developed to maximize the index.For numerous points or trajectory-processing tasks,a configuration smoothing strategy is proposed to rapidly acquire optimized configurations.Finally,experiments on a KR500 robot were conducted to verify the feasibility and validity of the proposed stiffness identification and configuration optimization methods. | Jiachen Jiao Wei Tian Lin Zhang Bo Li Junshan Hu Yufei Li Dawei Li Jianlong Zhang | 2022 | Chinese Journal of Mechanical Engineering2022，35，5： | 1 |
| 7 | A multi-frequency inverse source problem显示文摘 | Gang Bao Junshan Lin Faouzi Triki | 2010 | Journal of Differential Equations2010，，12： | 1 |
| 8 | Band Structure Calculations of Dispersive Photonic Crystals in 3D using Holomorphic Operator Functions显示文摘We propose a finite element method to compute the band structures of dispersive photonic crystals in 3D.The nonlinear Maxwell’s eigenvalue problem is formulated as the eigenvalue problem of a holomorphic operator function.The N´ed´elec edge elements are employed to discretize the operators,where the divergence free condition for the electric field is realized by a mixed form using a Lagrange multiplier.The convergence of the eigenvalues is proved using the abstract approximation theory for holomorphic operator functions with the regular approximation of the edge elements.The spectral indicator method is then applied to compute the discrete eigenvalues.Numerical examples are presented demonstrating the effectiveness of the proposed method. | Wenqiang Xiao Bo Gong Junshan Lin Jiguang Sun | 2023 | Communications in Computational Physics2023，33，2： | 0 |
| 9 | CRACK INITIATION POINT DETERMINATION AND DYNAMIC FRACTURE TOUGHNESS FOR CHARPY PRE-CRACKED SPECIMEN显示文摘The method to detect the crack initiation point of Charpy pre-cracked specimen under dy-namie loading was studied using strain gauge.The load-time curve and nominal strain-timecurve at the crack tip for impact testing specinens may be shnultaneously measured bytwin-channel oscilloscope with high speed sampling and diskette storing.Based on the dynam-ic finite element simulation of impact response of Charpy specimen,the measuring method ofdynamic fracture toughness was analysed and some problems in previous dynamic fracturetoughness measurement were discussed. | LIN Junshan YAN Wenbin TU Mingjing Xi’an Jiaotong University,Xi’an,China | 1992 | Acta Metallurgica Sinica(English Letters)1992，5，5： | 0 |
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