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Journal of Bionic Engineering 2010年第2期7卷 150-160页

作者： Kun Qian,Xudong Ma,Xianzhong Dai,Fang Fang Key Lab of Measurement and Control of Complex Systems of Engineering (Ministry of Education,china), southeast university,nanjing 210096,P.R.china [a] Key Lab of Measurement Control of Complex Systems of Engineering (Ministry of Education China) Southeast University Nanjing 210096 P. R. China

Nonverbal and noncontact behaviors play a significant role in allowing service robots to structure their interactions *** this paper, a novel human-mimic mechanism of robot’s navigational skills was proposed for developing sociallyacceptable robotic *** on the sociological and physiological concerns of interpersonal interactions in movement,several criteria in navigation were represented by constraints and incorporated into a unified probabilistic cost grid for safemotion planning and control, followed by an emphasis on the prediction of the human’s movement for adjusting the robot’spre-collision navigational *** human motion prediction utilizes a clustering-based algorithm for modeling humans’indoor motion patterns as well as the combination of the long-term and short-term tendency prediction that takes into accountthe uncertainties of both velocity and heading *** simulation and real-world experiments verified the effectivenessand reliability of the method to ensure human’s safety and comfort in navigation.A statistical user trials study was also given tovalidate the users’favorable views of the human-friendly navigational behavior.

关键词： robotic etiquette navigation human motion prediction human-robot interaction service robot

Polymer-assisted nanoparticulate contrast-enhancing materials

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Science china Chemistry 2010年第3期53卷 479-486页

作者： DING Yin1,3,HU Yong2,WU Wei1 & JIANG XiQun1 1laboratory of Mesoscopic Chemistry and Department of Polymer Science and Engineering,College of Chemistry & Chemical Engineering,nanjing university,nanjing 210093,china 2national laboratory of Solid State Microstructure,Department of Material Science and Engineering,nanjing university,nanjing 210093,china 3Key laboratory of Analytical Chemistry for Life Science,Ministry of Education,School of Chemistry and Chemical Engineering,nanjing university,nanjing 210093,china 1. laboratory of Mesoscopic Chemistry and Department of Polymer Science and Engineering College of Chemistry & Chemical Engineering Nanjing University Nanjing 210093 China3. Key Laboratory of Analytical Chemistry for Life Science Ministry of Education School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China2. National Laboratory of Solid State Microstructure Department of Material Science and Engineering Nanjing University Nanjing 210093 China

The application of nanotechnology in medicine research has significant potential in modern biomedical research,disease diagnosis and *** fluorophore-based detection techniques have been widely used as imaging and signal transduction tools for the detection of trace levels of *** photosensitivity of the fluorophores,however,limits their application in such complex environments as living bio-systems where degradation or photobleaching *** nanoparticles have unique and stable optical,electrical,magnetic and catalytic properties because of their various shapes,sizes and *** potential of the nanoparticles as novel imaging agents has been studied as a possible solution to this *** modification of inorganic nanoparticles could enhance their biostability in physiological conditions and ability of targeting bioactive molecules.

关键词： contrast agent cell image gold nanoparticles iron oxide nanoparticles carbon nanotubes polymeric-inorganic hybrid nanoparticles

Asymptotic Analysis for Low-Resolution Massive MIMO Systems with MMSE Receiver

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china communications 2018年第9期15卷 189-199页

作者： Kai Liu Cheng Tao Liu Liu Tao Zhou Yinsheng Liu Institute of Broadband Wireless mobile communications School of Electronics and Information Engineering Beijing Jiaotong University national mobile communications research laboratory Southeast University State Key laboratory of Rail Traffic Control and Safety Beijing Jiaotong University

The uplink achievable rate of massive multiple-input-multiple-output(MIMO) systems, where the low-resolution analog-to-digital converters(ADCs) are assumed to equip at the base station(BS), is investigated in this paper. We assume that only imperfect channel station information is known at the BS. Then a new MMSE receiver is designed by taking not only the Gaussian noise, but also the channel estimation error and quantizer noise into account. By using the Stieltjes transform of random matrix, we further derive a tight asymptotic equivalent for the uplink achievable rate with proposed MMSE receiver. We present a detailed analysis for the number of BS antennas through the expression of the achievable rates and validate the results using numerical simulations. It is also shown that we can compensate the performance loss due to the low-resolution quantization by increasing the number of antennas at the BS.

关键词： massive MIMO low-resolution quantization MMSE receiver

Accurate location of all surface wave modes for Green's functions of a layered medium by consecutive perturbations

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Science china(Information Sciences) 2010年第11期53卷 2363-2376页

作者： SONG Zhe, ZHOU HouXing, HU Jun, LI WeiDong & HONG Wei State Key laboratory of Millimeter Waves, School of Information Science and Engineering, southeast university, nanjing 210096, china 1. State Key laboratory of Millimeter Waves School of Information Science and Engineering Southeast University Nanjing 210096 China

In this paper, an efficient method is proposed to quickly and accurately locate all the surface wave modes of spectral Green’s functions of a layered medium. This method consists of two parts. In the first part, all the surface wave poles without considering the medium loss are located by a modified dichotomy on the real axis in the complex plane. In the second part, consecutive perturbations with respect to the medium loss are performed, which means that the medium loss is increased step by step from zero to the given value, and at each step, the Newton-Raphson algorithm is employed to find all the current poles, with the poles at the previous step as initial values. The residues of the surface wave poles are analytically calculated without any contour integral. The whole procedure is based on the recursively rational forms of spectral Green’s functions. As an application, all the surface wave poles and their residues obtained by the method proposed in this paper are applied in evaluation of the spatial Green’s functions by the discrete complex image method. Some numerical examples are provided to validate the correctness and efficiency of the proposed method.

关键词： Green’s function Sommerfeld integral surface wave pole perturbation discrete complex image method

Design,analysis and control of hybrid excited doubly salient stator-permanent-magnet motor

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Science china(Technological Sciences) 2010年第1期53卷 188-199页

作者： ZHU XiaoYong1,2 & CHENG Ming1 1 Engineering research Center for Motion Control of MOE,School of Electrical Engineering,southeast university,nanjing 210096,china 2 School of Electrical and Information Engineering,Jiangsu university,Zhenjiang 212013,china 1. Engineering research Center for Motion Control of MOE School of Electrical Engineering Southeast University Nanjing 210096 China2. School of Electrical and Information Engineering Jiangsu University Zhenjiang 212013 China

In this paper,a new hybrid excited doubly salient stator-permanent-magnet motor is proposed,where both permanent magnets and DC field windings are located in the *** theory,the mathematical model and design method of the motor are *** corresponding output power equation and the relationship between the flux control capability and the extended speed range are deduced in *** using an efficient "one-step" three-dimensional(3D) finite element method,the electromagnetic performances are analyzed,in which the leakage flux outside the stator circumference and end-effect are taken into *** on the operation principle of the motor,the control strategy and scheme are developed and implemented *** experimental results and finite element analysis show that the proposed motor not only maintains the advantages of doubly salient permanent magnet motors,but also offers high energy efficiency over a wide speed range,which makes the motor an interesting candidate for electric vehicles.

关键词： stator permanent magnet motor hybrid excitation doubly salient finite element method flux weakening control

Study on lithogeochemistry of Middle Jurassic basalts from southern china represented by the Fankeng basalts from Yongding of Fujian Province

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Science china Earth Sciences 2006年第10期49卷 1020-1031页

作者： ZHOU Jincheng1,2, JIANG Shaoyong1,2, WANG Xiaolei1,2, YANG Jinghong 1,2 & ZHANG Mengqun 3 1. State Key laboratory of Mineral Deposit research, nanjing university, nanjing 210093, china 2. Department of Earth Sciences, nanjing university, nanjing 210093, china 3. Modern Analysis Center, nanjing university, nanjing 210093, china 1. State Key laboratory of Mineral Deposit research Nanjing University Nanjing 210093 China 2. Department of Earth Sciences Nanjing University Nanjing 210093 China 3. Modern Analysis Center Nanjing University Nanjing 210093 China

There exists an E-W trending Middle Jurassic volcanic zone in southern china. The Fankeng basalts in the Yongding basin of Fujian Province are considered to be a typical example. The Fankeng basalts have TiO2 contents in the range of 1.92%-3.21%. They are classified as high-Ti basalts. They also have higher total Fe (averaging FeO* = 11.09%). The Middle Jurassic Fankeng basalts from southwestern Fujian have obvious distinctive lithogeochemical features from early Cre- taceous basalts from southeastern coast of china. They have higher HFSE, such as Th, Nb, Ta, Zr and Ti. Their element ratios related with HFSE, such as Zr/Ba, La/Nb, La/Ta ,Zr/Y, Ti/Y, Ba/Nb, K/Ti and Rb/Zr are similar to those of OIB. The most samples have ε Nd(T) of-0.70-0.24, which are near chondrite. Some samples have higher ε Nd(T) of ***, these basaltic magmas might be derived from depleted asthenospheric mantle. The lithogeochemical characteristics of the Fankeng basalts may be caused by interaction between asthenosphere and lithosphere at the time. The (Early-) Middle Jurassic basalts and gabbros from southeastern Hunan, southern Jiangxi and northern Guangdong provinces show similar geochemical features to those of the Fankeng basalts from the Yongding of Fujian. Occurrence of these OIB-type basalts in the area may be regarded as the petrological mark of upwelling of asthenosphere at the time. Upwelling of asthenosphere has led to tectonic extension and the formation of rifted basin in the area.

关键词： interaction between asthenosphere and lithosphere, lithogeochemistry, basalts, Middle Jurassic, southern china.

Measurement Study on Wind Characteristics of Typhoon Kalmaegi on the Sutong Bridge

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Wuhan university Journal of Natural Sciences 2010年第2期15卷 153-159页

作者： HU Ruomei, WANG Hao, LI Aiqun School of Civil Engineering, southeast university, nanjing 210096, Jiangsu, china School of Civil Engineering Southeast University Nanjing China

The Sutong Bridge, a cable-stayed located in the southeast coastal area of china, is vulnerable to the Pacific typhoons. From the data measured by two 3D ultrasonic anemometers at the height of 76 m and 306 m, the wind characteristics （including 10-minute mean wind speed and direction, turbulence intensity and gust factor, power spectral density and integral scale of turbulence） of Typhoon Kalmaegi are analyzed The comparison of 10-minute mean wind velocity from the two anemometers vali- dates the reliability of wind data. The turbulence intensities （Iu, Iv, and Iw） show the decreasing trend as the mean wind speed increases. The mean value of Iv/Iu is 0.94, while that of Iw/Iu is 0.90. Discrepancy exists between field-measured power spectra and code-suggested spectra. Those results can enlarge the wind database of the southeast coastal area of china, and provide references for wind resistance evaluation of the bridge.

关键词： structural health monitoring system (SHMS) cable-stayed bridge Typhoon Kalmaegi wind characteristics

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数论变换在异步保密机中的应用

通信学报 1999年第12期20卷 75-80页

作者：曹秀英东南大学移动通信国家重点实验室南京210096

本文讨论了数论变换在异步保密系统中的应用。首先对数论变换应用后系统所出现的问题进行了描述，然后分析，讨论了这些问题产生的原因，并针对输入信号动态范围的扩展，数论变换非线性控制等提出了相应的解决方法。

关键词：数论变换异步保密机保密通信

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联合均衡块迭代软判决反馈干扰抵消接收机

通信学报 2003年第11期24卷 153-161页

作者：曾嵘赵春明东南大学移动通信国家重点实验室江苏南京210096

CDMA扩频通信系统在低扩频比时,路径间干扰(IPI, inter-path interference)变得非常严重。本文将块迭代干扰抵消同MMSE均衡器相结合,提出了一种适用于CDMA扩频通信系统低扩频比情况下的联合均衡块迭代软判决反馈干扰抵消(MMSE-BIIC)接... 详细信息

CDMA扩频通信系统在低扩频比时,路径间干扰(IPI, inter-path interference)变得非常严重。本文将块迭代干扰抵消同MMSE均衡器相结合,提出了一种适用于CDMA扩频通信系统低扩频比情况下的联合均衡块迭代软判决反馈干扰抵消(MMSE-BIIC)接收机结构。理论分析与计算机仿真表明,本文提出的MMSE-BIIC接收机同传统的Rake接收机、线性MMSE均衡器以及多级干扰抵消接收机相比在性能上有较大改善。

关键词：码分多址 MMSE-BIIC接收机线性MMSE均衡器块迭代干扰抵消软判决反馈

AN ITERATIVE RELIABILITY-BASED DECODING FOR LDPC CODED MODULATION SYSTEM

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Journal of Electronics(china) 2008年第3期25卷 289-293页

作者： Huang Ping Zhao Chunming Jiang Ming national mobile Communication research Lab Southeast University Nanjing 210095 China Electrical Engineering School Hohai University Nanjing 210098 China

In this paper, A Belief Propagation concatenated Orderd-Statistic Decoder (BP-OSD) based on accumulated Log-Likelihood Ratio (LLR) is proposed for medium and short lengths Low Density Parity-Check (LDPC) codes coded Bit-Interleaved Coded Modulation (BICM) systems. The accumulated soft output values delivered by every BP iteration are used as reliability values of Soft-Input Soft-Output OSD (SISO-OSD) decoder and the soft output of SISO-OSD is used as a priori probabilities of the demodulator for the next iteration. Simulation results show that this improved algorithm achieves noticeable performance gain with only modest increase in computation complexity.

关键词： Low-Density Parity-Check (LDPC) codes Bit-Interleaved Coded Modulation (BICM) Belief Propagation (BP) Soft-Input Soft-Output Ordered Statistics Decoding (SISO-OSD) Log- Likelihood Ratio (LLR)