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LABORATORY MEASUREMENTS IN SINE-GENERATEd MEANdERIng CHANNELS

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泥沙研究 1997年第1期 22-24+26-34页

作者： A.M.Ferreira da SILVA 1 and M.S.YALIN 2

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Variable Coefficient KdV Equation for Amplitude of Nonlinear Solitary Rossby Waves in a Sort of Time-dependent Zonal Flow

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高原气象 2011年第2期30卷 349-354页

作者： da Chao-jiu SUN Shu-peng SOng Jian YAng lian-gui College of Atmospheric Sciences Lanzhou University Lanzhou 730000 China School of Mathematics and Computer Science Institute Northwest University for Nationalities Lanahou 730124 China College of Science Inner Mongolia University of Technology Hohhot 010062 China School of Mathematical Sciences Inner Mongolia University Hohhot 010021 China)

On the basis of the quasi-geostrophic vorticity equation,theoretical research has been down upon the evolution of the amplitude of solitary Rossby waves employing the perturbation method,and come to the conclusion tha... 详细信息

关键词： Nonlinear Rossby Waves Variable coefficient KdV equation Time-dependent zonal flow Perturbation method

Coupling measurement and correction at the SSRF storage ring

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Science China(Physics,Mechanics & Astronomy) 2011年第S2期54卷 201-206页

作者： ManZhou Zhang (1) Jie Hou (1) HaoHu Li (1) 1. Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China

Brightness is an important parameter for 3rd generation light source. Correcting the emittance coupling is a realistic way to increase brightness without any additional equipment in a machine under operation. The main sources of emittance coupling are betatron coupling and vertical dispersion. At the SSRF storage ring, tune split and LOCO are used to measure the respective betatron and emittance coupling. Both of these sources can be corrected by skew quadrupoles. By measuring the skew quadrupole-coupling response matrix, betatron coupling can be changed from 0.014% to 2%. But the vertical dispersion changes at the same time. LOCO can find the suitable setting to correct simultaneously the betatron coupling and vertical dispersion. The emittance coupling can be reduced to 0.17% by this method. More simulations show the potential for smaller emittance coupling if more skew quadrupoles are employed.

关键词： emittance coupling betatron coupling vertical dispersion tune split LOCO

长江下游地区晚泥盆世至早石炭世孢子带和泥盆系—石炭系界线

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地球学报 2015年第1期36卷 7-21页

作者：高联达中国地质科学院地质研究所北京100037

本文系统研究了长江下游地区(包括江苏、浙江和安徽)晚泥盆世和早石炭世孢子50属150余种。根据孢子在地层中的分布和演化规律,建立了7个孢子带,其中晚泥盆世3个带,早石炭世4个带。自下而上依次为:1)Rugospora flexuosa-Grandispora corn... 详细信息

本文系统研究了长江下游地区(包括江苏、浙江和安徽)晚泥盆世和早石炭世孢子50属150余种。根据孢子在地层中的分布和演化规律,建立了7个孢子带,其中晚泥盆世3个带,早石炭世4个带。自下而上依次为:1)Rugospora flexuosa-Grandispora cornuta(FC)带;2)Vallatisporites pusillites-Retispora lepidophyta(PL)带;3)Retispora lepidophyta-Verrucosisporites nitidus(LN)带;4)Vallatisporites verrucosus-Retusotriletes incohatus(VI)带;5)Spelacotriletes pretiosus-Cingulizonates bialatus(PB)带;6)Schopfites claviger-Auroraspora macra(LN)带;7)Lycospora pusilla(PU)带。五通群下部观山组化石孢子丰富,时代相当西欧晚泥盆世法门阶(Famennian)Fa2c-Fa2d。泥盆系和石炭系界线置于陈家边组底部,即3带Retispora lepidophytaVerrucosisporites nitidus(LN)带和4带Vallatisporites verrucosus-Retusotriltes incohatus(VI))带之间。本文还深入讨论了沉积环境、微古植物地理区、国内外比较等问题。

关键词：孢子孢子带晚泥盆世早石炭世

An Anthropomorphic Robot Hand developed Based on Underactuated Mechanism and Controlled by EMG Signals

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Journal of Bionic Engineering 2009年第3期6卷 255-263页

作者： da-peng Yang~1 Jing-dong Zhao~1 Yi-kun Gu~1 Xin-qing Wang~1 Nan Li~1 Li Jiang~1Hong Liu~(1,2) Hai Huang~3 da-wei Zhao~41.State Key Laboratory of Robotics and System,Harbin Institute of Technology,Harbin 150001,P.R.China2.Institute of Robotics and Mechatronics,German Aerospace Center,Munich 82230,Germany3.College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,P.R.China4.College of Automation,Harbin Engineering University,Harbin 150001,P.R.China [a]State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin 150001 P. R. China [b]Institute of Robotics and Mechatronics German Aerospace Center Munich 82230 Germany [c]College of Shipbuilding Engineering Harbin Engineering University Harbin 150001 P. R. China [d]College of Automation Harbin Engineering University Harbin 150001 P. R. China

When developing a humanoid myo-control hand,not only the mechanical structure should be considered to afford a high dexterity,but also the myoelectric (electromyography,EMG) control capability should be taken into account to fully accomplish the actuation *** paper presents a novel humanoid robotic myocontrol hand (AR hand Ⅲ) which adopted an underac- tuated mechanism and a forearm myocontrol EMG *** AR hand Ⅲ has five fingers and 15 joints,and actuated by three embedded *** can be found within each finger and between the rest three fingers (the middle finger,the ring finger and the little finger) when the hand is grasping *** the EMG control,two specific methods are proposed:the three-fingered hand gesture configuration of the AR hand Ⅲ and a pattern classification method of EMG signals based on a statistical learning algorithm-Support Vector Machine (SVM).Eighteen active hand gestures of a testee are recognized ef- fectively,which can be directly mapped into the motions of AR hand Ⅲ.An on-line EMG control scheme is established based on two different decision functions:one is for the discrimination between the idle and active modes,the other is for the recog- nition of the active *** a result,the AR hand Ⅲ can swiftly follow the gesture instructions of the testee with a time delay less than 100 ms.

关键词： humanoid hand underactuated mechanism EMG control suppon vector machine

Mechanism of exogenous nucleic acids and their precursors improving the repair of intestinal epithelium after 7-irradiation in mice

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World Journal of Gastroenterology 2000年第5期6卷 709-717页

作者： da Xiang Cui~1 Guei Ying Zeng~2 Feng Wang~1 Jun Rong Xu~1 dong Qing Ren~2 Yan Hai Guo~1 Fu Rong Tian~2 Xiao Jun Yan~1 Yu Hou~1 Cheng Zhi Su~1 1 Institute of Genetic diagnosis of the Fourth Military Medical University,Xi’an 710032,China 2 department of Irradiation Medicine of the Fourth Military Medical University,Xi’an 710032,China da Xiang Cui Feng Wang Jun Rong Xu Yan Hai Guo Xiao Jun Yan Yu Hou Cheng Zhi Su Institute of Genetic Diagnosis of the Fourth Military Medical University Xi’an 710032 China Guei Ying Zeng Dong Qing Ren Fu Rong Tian Department of Irradiation Medicine of the Fourth Military Medical University Xi’an 710032 China

AIM To clone expressed genes associated withrepair of irradiation-damaged mice intestinalgland cells treated by small intestinal RNA,andto explore the molecular mechanism ofexogenous nucleic acids improving repair ofintestinal *** The animal mode of test group andcontrol group was established,forty-five micebeing irradiated by γ ray were treated with smallintestinal RNA as test group,forty mice beingirradiated by γ ray were treated withphysiological saline as control group,five micewithout irradiation were used as normal control,their jejunal specimens were collectedrespectively at 6h,12h,24h,4d and 8d *** by using Ld-PCR based onsubtractive hybridization,these gene fragmentsdifferentially expressed between test group andcontrol group were obtained,and then werecloned into T vectors as well as *** sequences were ***,if being new sequences,they were submitted to *** Ninety clones were associated withrepair of irradiation-damaged intestinal glandcells treated by intestinal *** clonesfrom test group of 6h,12h,24h,4d and 8dwere respectively 18,22,25,13,*** screening against GeneBank,18 of which werenew sequences,the others were dramaticallysimilar to the known sequences,mainly similarto hsp,Nmi,dutt1,alkaline phosphatase,homeobox,anti-CEA ScFv antibody,arginine/serine kinase and BMP-4,*** genefragments were new sequences,their acceptnumbers in GeneBank were *** Ninety clones were obtained tobe associated with repair of irradiation-damagedmice intestinal gland cells treated by smallintestinal RNA,which may be related toabnormal expression of genes and matchedproteins of hsp,Nmi,duttl,Na,K-ATPase,alkalineph-osphatase,glkA,single strandedreplicative centromeric gene as well as 18 newsequences.

关键词： radiation ionizing intestine small/injuries RNA gene expression nucleic acids/therapeutic use polymerase chain reaction repair intestinal epithelium mice

Investigation of Mach-Zehnder interferometer properties based on PLC technology

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Optoelectronics Letters 2018年第3期14卷 170-174页

作者： REN Mei-zhen1 2 ZHAng Jia-shun1 AN Jun-ming1 2 WAng Yue1 WAng liang-liang1 LI Jian-guang1 WU Yuan-da 1 2 YIN Xiao-jie1 HU Xiong-wei1 State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences College of Materials Science and Opto-Electronic Technology University of Chinese Academy of Sciences

We report investigations of three types of silica-based thermo-optic modulating Mach-Zehnder interferometers(MZIs).They are widely used in optical communication and quantum *** types of MZIs are *** waveguide structure and fabrication process are paid special *** power consumption is less than 250 mW for all *** polarization dependent loss(PdL)at the same attenuation using the upper heater is less than that using the lower heater for the three types of *** addition,it is found that the PdL at the same attenuation increases gradually forπ,2πand 0 phase *** measured response time of the three types of MZIs is less than 1.8 ms.

关键词： Investigation of Mach-Zehnder interferometer properties PLC technology

Optimal Heating in Heat-Treatment Process Based on Grey Asynchronous Particle Swarm Optimization

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Journal of Iron and Steel Research International 2012年第12期19卷 1-7页

作者： LI Jia-dong1, LI Yong1, ZHAO da-dong2, FU Tian-liang1, WAng Zhao-dong1, WAng Guo-dong1 (1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China 2. School of Materials and Metallurgy, University of Science and Technology of Liaoning, Anshan 114051, Liaoning, China) [a] State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China [b] School of Materials and Metallurgy University of Science and Technology of Liaoning Anshan 114051 Liaoning China

To ensure plate heating quality and reduce energy consumption in heat-treatment process, optimal heating for plates in a roller hearth furnace was investigated and a new strategy for heating procedure optimization was developed. during solving process, plate temperature forecast model based on heat transfer mechanics was established to calculate plate temperature with the assumed heating procedure. In addition, multi-objective feature of optimal heating was analyzed. And the method, which is composed of asynchronous particle swarm optimization and grey relational analysis, was adopted for solving the multi-objective problem. The developed strategy for optimizing heating has been applied to the mass production. The result indicates that the absolute plate discharging temperature deviation between measured value and target value does not exceed ± 8 ℃, and the relative deviation is less than ± 0.77%.

关键词： plate optimal heating roller hearth furnaee heat treatment GRA PSO

The Fuzzy Cluster Analysis in Identification of Key Temperatures in Machine Tool

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厦门大学学报（自然科学版） 2002年第S1期41卷 88-89页

作者： ZHAO da-quan 1, ZHEng Li 1, XIAng Wei-hong 1, LI Kang 1, LIU da-cheng 1, ZHAng Bo-peng 2 (1. department of Industrial Engineering, Tsinghua University, 2. department of Precision Instruments and Mechanology, Tsinghua University, B eijing 100084, China)

The thermal-induced error is a very important sour ce of machining errors of machine tools. To compensate the thermal-induced machin ing errors, a relationship model between the thermal field and deformations was needed. The relationship can be deduced by virtual of FEM (Finite Element Method ), ANN (Artificial Neural Network) or MRA (Multiple Regression Analysis). MR A is on the basis of a total understanding of the temperature distribution of th e machine tool. Although the more the temperatures measured are, the more accura te the MRA is, too more temperatures will hinder the analysis calculation. So it is necessary to identify the key temperatures of the machine tool. The selectio n of key temperatures decides the efficiency and precision of MRA. Because of th e complexities and multi-input and multi-output structure of the relationships , the exact quantitative portions as well as the unclear portions must be taken into consideration together to improve the identification of key temperatures. I n this paper, a fuzzy cluster analysis was used to select the key temperatures. The substance of identifying the key temperatures is to group all temperatures b y their relativity, and then to select a temperature from each group as the repr esentation. A fuzzy cluster analysis can uncover the relationships between t he thermal field and deformations more truly and thoroughly. A fuzzy cluster ana lysis is the cluster analysis based on fuzzy sets. Given U={u i|i=0,...,N}, in which u i is the temperature measured, a fuzzy matrix R can be obta ined. The transfer close package t(R) can be deduced from R. A fuzzy clu ster of U then conducts on the basis of t(R). Based on the fuzzy cluster analysis discussed above, this paper identified the k ey temperatures of a horizontal machining center. The number of the temperatures measured was reduced to 4 from 32, and then the multiple regression relationshi p models between the 4 temperatures and the thermal deformations of the spind

关键词： The Fuzzy Cluster Analysis in Identification of Key Temperatures in Machine Tool