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塑性力学新进展——2011年全国塑性力学会议

作者： Guoxing Lu~* school of Mechanical and Aerospace Engineering,nanyang technological university, nanyang Avenue,639798 singapore

Our recent research projects related to the blast resistance of sandwich structures are presented in this *** include a number of typical sandwich structures subjected to various blast loads with the different core materials and different geometry *** major works are included in the paper,i.e.,large deformation of square sandwich plates with honeycomb and foam core subjected to air blast loadings,radial crushing of sandwich tubes under inner blast loading,and singly curved sandwich panels subjected to air and simulated blast *** each study,experiments were conducted first to obtain the primary deformation and failure features and then detailed information was further revealed by the FE models and a parametric study *** all our investigations,several characteristic features on the blast resistance of sandwich structures can be summarized.

关键词： Blast resistance Sandwich structure Plastic large deformation Energy absorption

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PID Controller Design Based on Two-Degrees-of-Freedom Direct Synthesis

PID Controller Design Based on Two-Degrees-of-Freedom Direct...

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2011 Chinese Control and Decision Conference（CCDC）

作者： Wuhua Hu and Wen-Jian Cai are with the school of Electrical and Electronic Engineering,nanyang technological university,singapore 639798,singapore Gaoxi Xiao is with the school of Electrical and Electronic Engineering,nanyang technological university,singapore 639798,singapore.

Two design methods for proportional-integralderivative （PID） controllers are proposed based on the twodegrees-of-freedom （2-DOF） direct synthesis （DS） *** method specifies the closed-loop setpoint-to-output transfer function,and the other specifies the closed-loop disturbance-tooutput transfer *** appropriate DS,the 2-DOF controllers are approximated as a PID controller with setpoint *** expressions for the PID controllers are derived for common process *** examples demonstrate that the proposed design methods result in very good control for a wide variety of processes,and that they can provide better performance over recent DS and internal model control methods when they are tuned to have the same degree of robustness as measured in terms of the peak sensitivity.

关键词： PID 2-DOF direct synthesis setpoint weighting intenal model control time delay

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Organic micro/nanomaterials:Synthesis,Characterization and applications

Organic micro/nanomaterials:Synthesis,Characterization and a...

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2011中国材料研讨会

作者： Qichun Zhang school of Materials Science and Engineering,nanyang technological university (NTU),50 nanyang Avenue,singapore 639798,singapore.

In this talk,I will talk the postchemistry of organic microparticles in aqueous *** is well-known that the conversion of pre-formed inorganic nanoparticles into more complicated nanocrystalline solids has become a powerful tool to enrich compositional and morphological complexity in inorganic *** a counterpart,organic particles should also possess this ability to perform chemical conversion since the building blocks in organic micro/nano-materials have relatively weaker ***,the present reports for organic particles only focus on synthesis （shape/size control） and *** organic particles as starting materials to generate novel organic micro/nanostructures through chemical conversion/transformation is *** gap in knowledge strongly encourages us to probe the possibility of this *** addition,organic particles also can be prepared through reprecipiation method.

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Uniaxial strain effects on graphene and thickness dependence of reversible hydrogenation of graphene:Raman scattering study

Uniaxial strain effects on graphene and thickness dependence...

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第十五届全国光散射学术会议

作者： Ting Yu and Zexiang Shen (Division of Physics and Applied Physics,school of physical and mathematical sciences,nanyang technological university,21 nanyang Link 637371,singapore)

＜正＞Graphene consists of one flat layer of carbon atoms arranged in a honeycomb lattice,it has attracted intensive interest since experimentally discovered in *** to its special properties such as the massless relativistic Dirac fermions,the quantum Hall effect,and the ballistic transport even at room temperature,graphene provides a promising future for fundamental studies and practical applications.

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Practices and Advances in Nanoelectrochemistry

Practices and Advances in Nanoelectrochemistry

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第十三次全国电化学会议

作者： Chang Ming Li school of Chemic and Biomedical Engineering nanyang technological university singapore 639798

＜正＞Nanoelectrochemistry recently has been extensively studied by scientists and engineers from different backgrounds. The research areas involve electrochemical production of nanomaterials, nanofabrication, electrochemical nanodevices, single molecule or/and atomic electrochemistry, electrochemistry on nanoelectrodes and theoretical contribution to understand nanoelectrochemistry. The advances of nanoelectrochemistry could lead to fundamental theoretical contributions to electrochemistry and to important industry applications.

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Effect of rock mass structure and block size on the slope stability——physical modeling and discrete element simulation

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Science China(technological sciences) 2005年第Z1期48卷 1-17页

作者： LI Shihai1, LIAN Zhenzhong1,2 & J. G. Wang3 1. Institute of Mechanics, Chinese Academy of sciences, Beijing 100080, China 2. Graduate school, Chinese Academy of sciences, Beijing 100060, China 3. Tropical Marine Science Institute, National university of singapore, singapore 119260 Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China Graduate school Chinese Academy of Sciences Beijing 100060 China Tropical Marine Science Institute National University of Singapore Singapore 119260 Singapore

This paper studies the stability of jointed rock slopes by using our improved three-dimensional discrete element methods (DEM) and physical modeling. Results show that the DEM can simulate all failure modes of rock slopes with different joint configurations. The stress in each rock block is not homogeneous and blocks rotate in failure development. Failure modes depend on the configuration of joints. Toppling failure is observed for the slope with straight joints and sliding failure is observed for the slope with staged joints. The DEM results are also compared with those of limit equilibrium method (LEM). Without considering the joints in rock masses, the LEM predicts much higher factor of safety than physical modeling and DEM. The failure mode and factor of safety predicted by the DEM are in good agreement with laboratory tests for any jointed rock slope.

关键词： rock masses, slope stability, DEM simulation, block size effect, joints configuration effect, limit equilibrium method.

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Strategies towards the fluorescent visualization of enzyme expression and effective inactivation of drug resistant bacterial strains

Strategies towards the fluorescent visualization of enzyme e...

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2011年全国药物化学学术会议——药物的源头创新

作者： Bengang Xing,Shao Qing,Yanmei Yang Division of Chemistry and Biological Chemistry,school of physical and mathematical sciences,nanyang technological university,637371,singapore

＜正＞In general,the specificity observed in biological system is always mediated by the accurate and selective control of gene expression in response to intrinsic development programs and extrinsic *** possibility to better understand the regulation of gene expression and the specificity of biological pathways is to apply an assay with high sensitivity and fidelity that reports

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Chemically Enabled Fabrication of Molecular Transport Junctions

Chemically Enabled Fabrication of Molecular Transport Juncti...

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2011中国材料研讨会

作者： Xiaodong Chen school of Materials Science and Engineering,nanyang technological university,50 nanyang Avenue,singapore,639798

＜正＞Molecular transport junctions （MTJs） are essential structures for developing the field of molecular *** of the major challenges in building MTJs is the development of reliable

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LQG Control with Quantized Innovation Kalman Filter

LQG Control with Quantized Innovation Kalman Filter

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第二十七届中国控制会议

作者： You Keyou,Xie Lihua school of Electrical and Electronic Engineering,nanyang technological university,singapore 639798

The purpose of this paper is to extend our previous work on the multi-level quantized innovation Kalman filter(MLQ-KF) .We consider the Linear Quadratic Gaussian(LQG) optimal control problem in the discrete *** the assumption that the innovation is approximately Gaussian,it is shown that the separation principle remains valid under the quantized measurement *** optimal LQG controller is then given in terms of two Riccati difference equations associated respectively with the quantized Kalman filter and the standard LQR *** corresponding minimum cost is also *** illustrative example is included to benchmark our proposed quantized LQG control with the standard LQG control.

关键词： Quantized innovation Kalman filter LQG controller Modified Riccati equation

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Simple and Specific Molecular probes for Imaging Gene Expression and Bacterial Function

Simple and Specific Molecular probes for Imaging Gene Expres...

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中国化学会第27届学术年会

作者： Shao Qing, Yanmei Yang, Bengang Xing* Division of Chemistry and Biological Chemistry, school of physical and mathematical sciences, nanyang technological university, 637371, singapore

＜正＞Biological specificity is mediated by the precise and selective regulation of gene expression in response to intrinsic development programs and extrinsic signals. In order to understand the regulation of gene

关键词： Molecular imaging gene expression bacterial function

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