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Investigating long-term vehicle speed prediction based on GA-BP algorithms and the road-traffic environment

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Science China(Information Sciences) 2020年第9期63卷 121-123页

作者： Yufang LI Chen REN Hongwei ZHAO Guoping CHEN Department of Vehicle Engineering College of Energy & Power Engineering Nanjing University of Aeronautics and Astronautics Key laboratory of Advanced Manufacture Technology for Automobile Parts (Chongqing University of Technology) Ministry of Education foton Motor Group

Dear editor,Effective and accurate long-term speed prediction is crucial for intelligent transportation and automobile intelligent energy management systems of intelligent connected vehicles. These predictions have important research value and broad application prospects including widespread use in improving traffic efficiency and safety, fuel economy, remaining driving range estimation [1], and electric

关键词： long-term speed prediction road-traffic environment characteristic parameters description GA-BP network modeling

Comparison of wavelength conversion efficiency between silicon waveguide and microring resonator

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Frontiers of Optoelectronics 2016年第3期9卷 390-394页

作者： Meng XIONG Yunhong DING Haiyan OU Christophe PEUCHERET Xinliang ZHANG Department of Photonics Engineering Technical University of Denmark 2800 Kgs. Lyngby Denmark foton laboratory CNRS UMR 6082 ENSSAT University of Rennes 1 F-22305 Lannion France Wuhan National laboratory for Optoelectronics Huazhong University of Science and Technology Wtthan 430074 China

Wavelength conversion based on degenerate four-wave mixing （FWM） was demonstrated and compared between silicon nanowire and microring resonator （MRR）. 15 dB enhancement of conversion efficiency （CE） with relatively low input pump power （5roW） was achieved experimentally in an MRR. The impacts of bus waveguide length and propagation loss were theoretically analyzed under the effect of nonlinear loss.

关键词： wavelength conversion four-wave mixing (FWM) silicon nanowaire microring resonator (MRR)

Linear all-optical signal processing using silicon micro-ring resonators

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Frontiers of Optoelectronics 2016年第3期9卷 362-376页

作者： Yunhong DING Haiyan OU Jing XU Meng XIONG Yi AN Hao HU Michael GALILI Abel Lorences RIESGO Jorge SEOANE Kresten YVIND Leif Katsuo OXENLOWE Xinliang ZHANG Dexiu HUANG Christophe PEUCHERET Department of Photonics Engineering Technical University of Denmark 2800 Kgs. Lyngby Denmark Wuhan National laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China Department of Microtechnology and Nanoscience Chalmers University of Technology Gothenburg Sweden foton laboratory CNRS UMR 6082 University of Rennes 1 ENSSAT 22300 Lannion France

Silicon micro-ring resonators （MRRs） are compact and versatile devices whose periodic frequency response can be exploited for a wide range of applications. In this paper, we review our recent work on linear all-optical signal processing applications using silicon MRRs as passive filters. We focus on applications such as modulation format conversion, differential phase-shift keying （DPSK） demodulation, modulation speed enhancement of directly modulated lasers （DMLs）, and monocycle pulse generation. The possibility to implement polarization diversity circuits, which reduce the polarization dependence of standard silicon MRRs, is illustrated on the particular example of DPSK demodulation.

关键词： linear all-optical signal processing micro-ring resonator (MRR) polarization diversity silicon-on-insulator (SOI)

Chemical etching of a GaSb crystal incorporated with Mn grown by the Bridgman method under microgravity conditions

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Journal of Semiconductors 2009年第8期30卷 47-51页

作者：陈晓锋陈诺夫吴金良张秀兰柴春林俞育德 Key laboratory of Semiconductor Materials and Devices Institute of SemiconductorsChinese Academy of Sciences National laboratory of Microgravity Institute of MechanicsChinese Academy of Sciences

A GaSb crystal incorporated with Mn has been grown by the Bridgman method on the Polizon facility onboard the foton-M3 spacecraft. Structural defects and growth striations have been successfully revealed by the chemical etching method. By calculating various parameters of the convection, the striation patterns can be explained, and the critical value of the Taylor number, which characterizes the convective condition of the rotating magnetic field induced azimuthal flow, was shown. The stresses generated during crystal growth can be reflected by the observations of etch pit distribution and other structural defects. Suggestions for improving the space experiment to improve the quality of the crystal are given.

关键词： chemical etching etch pit defect growth striations convection

Progress of Microgravity Material Research During the Period of 2007-2009

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空间科学学报 2010年第5期30卷 504-515页

作者： Chen Nuofu Bai Yiming Chen Wanchun Zhou Yanfei Luo Xinghong Yu Yude Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 Institute of Physics Chinese Academy of Sciences Chinese Academy of Sciences Key laboratory of Materials for Energy Conversion Shanghai Institute of Ceramics Chinese Academy of Sciences Institute of Metal Research Chinese Academy of Sciences School of Renewable Energy North China Electricity Power University

Orbital experimental researches on crystal growth of Mn-doped GaSb and Bi2Se0.21Te2.79 are briefly *** space experiments were completed in September of 2007 on broad the foton-M3 satellite of ***-based researches on the solidification behaviors of Al-Al3Ni,AlAl2Cu,Ag-Cu eutectic,Al-Pb monotectic and Cu-Co peritectic alloys in a 50-meter-high drop tube were *** experimental results on the ultrasonic field and the temperature recycling induced to chiral symmetry breaking of NaClO3 crystal also were reported in the present paper.

关键词：微重力材料空间实验晶体生长凝固行为包晶合金对称破缺温度诱导