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Shape reconstruction based on FBG flexible sensor

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Optoelectronics Letters 2022年第8期18卷 454-460页

作者： WANG Yan XU Haoyu jin ping WANG Junliang ZHU Wei School of Electrical and Information Engineering Anhui University of TechnologyMaanshan 243000China

In this paper,the shape of the object is reconstructed based on the fiber Bragg grating(FBG)flexible sensor encapsulated by polydimethylsiloxane(PDMS)material,and the influence of the number and layout of the sensors on the reconstruction accuracy of the object is *** COMSOL simulation software is used to verify the accuracy of the algorithm,and four sensors are prepared to measure and reconstruct the bent aluminum plate under set *** maximum relative error of the shape reconstruction span is 1.203%,and the maximum relative error of the height is 2.802%.The research results provide the application basis for the shape detection of soft robots.

关键词： sensor flexible PDMS

Study on the supramolecular systems of two basic violets with cyclodextrins by MWNTs/Nafion modified glassy carbon electrode

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Chinese Chemical Letters 2009年第8期20卷 981-984页

作者： jin ping Song Yu jing Guo Shao Min Shuang Chuan Dong ~Research Center for Environmental Science and Engineering Shanxi University Taiyuan 030006 China Medical College of Shanxi Datong University Datong 037000 China

Abstract The electrochemical properties of two basic violets （methyl violet and ethyl violet） at the MWNTs/Nafion modified glassy carbon electrode were investigated. The redox of the basic violets is two-electron and two-proton process, and methyl violet presents stronger electron transfer capacity than ethyl violet. Meanwhile, the inclusion constants of the two basic violets with five CDs were determined by differential pulse voltammetry （DPV）. The two basic violets and CDs can form 1：1 complexes, The inclusion capacities of the two basic violets follow the same order： CM-β-CD 〉 HP-β-CD 〉 TM-β-CD 〉 DM-β- CD 〉 β-CD. ？2009 Yu jing Guo. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： Basic violet Carbon nanotubes Modified electrode Inclusion complexes

Inversion of focal mechanism and events identification using an improved relative amplitude method

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Earthquake Science 2009年第1期22卷 13-20页

作者： Hongchun Wang ping jin Changzhou Pan Weiguo Xiao Northwest Institute of Nuclear Technology Xi'an 710024 China

The relative amplitude method （RAM） is more suitable for source inversion of low magnitude earthquakes because it avoids the modeling of short-period waveforms. We introduced an improved relative amplitude method （IRAM） which is more robust in practical cases. The IRAM uses a certain function to quantify the fitness between the observed and the predicted relative amplitudes among direct P wave, surface reflected pP and sP waves for a given focal mechanism. Using the IRAM, we got the fault-plane solutions of two earthquakes of mb4.9 and mb3.8, occurred in Issyk-Kul lake, Kyrgyzstan. For the larger event, its fault-plane solutions are consistent with the Harvard＇s CMT solutions. As to the smaller one, the strikes of the solution are consistent with those of the main faults near the epicenter. The synthetic long period waveforms and the predicted P wave first motions of the solutions are consistent with observations at some of regional stations. Finally, we demonstrated that fault-solutions cannot interpret the characteristics of teleseismic P waveforms of the underground nuclear explosion detonated in Democratic People＇s Republic of Korea （DPRK） on October 9, 2006.

关键词： improved relative amplitude method inversion of focal mechanisms events identification

Pricing permanent convertible bonds in EVG model

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Applied Mathematics(A Journal of Chinese Universities) 2012年第3期27卷 268-280页

作者： YANG Xiao-feng YU jin-ping HUANG Wen-li LI Sheng-hong Department of Mathematics Zhejiang UniversityHangzhou 310027China Department of Mathematics Zhejiang University of Science and TechnologyHangzhou 310023 China

By considering the failure of normal distribution and continuous assumption in financial modeling, this paper attempts to apply the Exponential Variance Gamma （EVG） model into the pricing framework of permanent convertible bonds with call clause. Following framework of Gapeev ＆ Kiihn（2005）, we obtain an explicit solution to the bond price and optimal stopping strategies, which shows that the new pricing framework is quite different from the continuous model and even the Jump Diffusion model. Compared with the numerical calculation, the closed form results price convertible bonds quickly and accurately.

关键词： convertible bond call clause variance gamma process.

Ionospheric inversion of the Venus Express radio occultation data observed by Shanghai 25m and New Norcia 35m antennas

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Research in Astronomy and Astrophysics 2015年第9期15卷 1559-1570页

作者： Su-Jun Zhang Nian-Chuan Jian jin-Ling Li jin-Song ping Cong-Yan Chen Ke-Fei Zhang Shanghai Astronomical Observatory Chinese Academy of Sciences Key Laboratory of Planetary Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of Sciences School of Information Science and Engineering Southeast University RMIT University Melbourne

Electron density profiles of Venus＇ ionosphere are inverted from the Venus Express （VEX） one-way open-loop radio occultation experiments carried out by the Shanghai 25 m antenna from November 2011 to January 2012 at solar maximum conditions and by the New Norcia 35 m antenna from August 2006 to June 2008 at solar intermediate conditions. The electron density profile （from 110 km to 400 km）, retrieved from the X-band egress observation at the Shanghai station, shows a single peak near 147 km with a peak density of about 2 × 10^4 cm-3 at a solar zenith angle of 94° As a comparison, the VEX radio science （VeRa） observations at the New Norcia station were also examined, including S- and X-band and dual-frequency data in the ingress mode. The results show that the electron density profiles retrieved from the S-band data are more analogous to the dual-frequency data in terms of the profile shape, compared with the X-band data. Generally, the S-band results slightly underestimate the magnitude of the peak density, while the X-band results overestimate it. The discrepancy in the X-band profile is probably due to the relatively larger unmod- eled orbital errors. It is also expected that the ionopause height is sensitive to the solar wind dynamical pressure in high and intermediate solar activities, usually in the range of 200-1000 km on the dayside and much higher on the nightside. Structural variations （＂bulges＂ and fluctuations） can be found in the electron density profiles during intermediate solar activity, which may be caused by the interaction of the solar wind with the ionosphere. Considerable ionizations can be observed in Venus＇ nightside ionosphere, which are unexpected for the Martian nightside ionosphere in most cases.

关键词： planets and satellites: terrestrial planets -- planets and satellites: atmo-spheres -- planets and satellites: detection

Temperature-Dependent Characteristics of GaN Schottky Barrier Diodes with TiN and Ni Anodes

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Chinese Physics Letters 2019年第5期36卷 54-58页

作者： Ting-Ting Wang Xiao Wang Xiao-Bo Li jin-Cheng Zhang jin-ping Ao Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices School of MicroelectronicsXidian UniversityXi’an 710071 Institute of Technology and Science Tokushima UniversityTokushima 770-8506Japan

The effect of temperature on the characteristics of gallium nitride (GaN) Schottky barrier diodes (SBDs) with TiN and Ni anodes is evaluated. With increasing the temperature from 25 to 175℃, reduction of the turn-on voltage and increase of the leakage current are observed for both GaN SBDs with TiN and Ni anodes. The performance after thermal treatment shows much better stability for SBDs with Ti N anode, while those with Ni anode change due to more interface states. It is found that the leakage currents of the GaN SBDs with TiN anode are in accord with the thermionic emission model whereas those of the GaN SBDs with Ni anode are much higher than the model. The Silvaco TCAD simulation results show that phonon-assisted tunneling caused by interface states may lead to the instability of electrical properties after thermal treatment, which dominates the leakage currents for GaN SBDs with Ni anode. Compared with GaN SBDs with Ni anode, GaN SBDs with TiN anode are beneficial to the application in microwave power rectification fields due to lower turn-on voltage and better thermal stability.

关键词： GaN SBD Temperature-Dependent Characteristics of GaN Schottky Barrier Diodes with TiN and Ni Anodes TiN Ni

Nanotip-induced ultrahigh pressure-sensitive cement-based composite and its pressure-sensitive characteristic model

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Nanotip-induced ultrahigh pressure-sensitive cement-based co...

奶牛乳房炎5种致病菌多重PCR检测方法的建立与应用

第八届中国功能材料及其应用学术会议

作者： HAN Bao-guo SUN Sheng-wei OU jin-ping School of Civil Engineering Dalian University of Technology School of Civil Engineering Harbin Institute of Technology

ISBN: (纸本)9783037859698

A smart composite is fabricated from cement-matrix and spiky spherical nickel *** electrical resistivityof such composite decreases69.00%under uniaxial *** gage factor of this composite ishigherthan 895.45 within the elastic *** ultrahigh pressure-sensitivityis attributed to the unique needle-like surface morphology of nickel *** the normal smooth spherical nickel particles,the needle-like features of spiky spherical nickel particles can induce field emission and tunneling effects,which leads tohighly sensitive responses to strain.A constitutive model relating the change in electrical resistivity to strainof thecomposite is built within the elastic *** model incorporates the field emission effect and the interparticle separation change of nickel powders in *** model is used to predict the pressure-sensitive characteristic behavior of the *** predicted result is compared with the experimental data obtained on the composite,and good agreement is obtained.

关键词： Cement-based composite Spiky spherical nickel powder Pressure-sensitivity Field emission effect Tunneling effect Pressure-sensitive characteristic model

来源： cnki会议评论

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cnki会议

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动物医学进展 2025年第1期46卷 48-55页

作者：王雪容张宇张海森杨王浩靳亚平陈华涛西北农林科技大学动物医学院/农业农村部动物生物技术重点实验室陕西杨凌712100

为建立一种能快速检测奶牛乳房炎主要病原菌(大肠埃希氏菌、无乳链球菌、肺炎克雷伯氏菌、金黄色葡萄球菌和肠炎沙门氏菌)的多重PCR检测方法,根据大肠埃希氏菌phoA基因、无乳链球菌ef-tu基因、肺炎克雷伯氏菌Khe基因、金黄色葡萄球菌Nu... 详细信息

为建立一种能快速检测奶牛乳房炎主要病原菌(大肠埃希氏菌、无乳链球菌、肺炎克雷伯氏菌、金黄色葡萄球菌和肠炎沙门氏菌)的多重PCR检测方法,根据大肠埃希氏菌phoA基因、无乳链球菌ef-tu基因、肺炎克雷伯氏菌Khe基因、金黄色葡萄球菌Nuc基因和肠炎沙门氏菌invA基因设计特异性引物,优化PCR反应体系与反应程序并进行特异性试验,同时分别构建含病原菌基因的pMD-19T重组质粒进行灵敏性试验。结果显示,多重PCR反应的最适引物工作浓度为0.8μmol/L,最适退火温度为59.6℃,最佳延伸时间为40 s,最合适的循环数为30次;优化后的多重PCR反应体系可扩增出5种目标病原菌的特异性条带;5种病原菌PCR检测灵敏度可达到5 copies/μL。进一步利用该多重PCR反应体系对采集的108份乳房炎乳样进行检测,检测结果显示,108份样本的阳性检出率为77.8%,大肠埃希氏菌、无乳链球菌、金黄色葡萄球菌、肺炎克雷伯氏菌和肠炎沙门氏菌的检出率分别为23.1%、8.3%、34.3%、8.3%、5.6%。结果表明,建立了一种具有良好特异性和灵敏性的多重PCR检测方法,在临床生产实践中可用于快速鉴定奶牛乳房炎的致病菌,为奶牛乳房炎的诊断、防控与流行病学调查提供了方法基础。

关键词：奶牛乳房炎病原菌多重PCR

IBC/FEM Analysis of Electromagnetic Scatter of Cavities Coated with Layered Medium

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Frontiers of Electrical and Electronic Engineering in China 2006年第1期1卷 88-91页

作者： HE Xiao-xiang XU jin-ping College of Information Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 210016China State Key Laboratory of Millimeter Waves Southeast UniversityNanjing 210096China

The Leontovich impedance boundary condition(IBC)is combined with the edge-based finite element method(FEM)in this paper to analyze the electromagnetic(EM)scattering of cavities coated with a multilayered *** IBC on the surface of the medium and the boundary integral equation on the aperture of the cavity are transformed into the third boundary condition,and then the functional of the boundary value problem is *** surface impedance of the layered dielectric is calculated by the generalized reflection coefficient;hence,the multireflection of the EM wave in the dielectric is *** a result,the IBC is *** results are presented,which demonstrate that the presented IBC/FEM approach is accurate and convenient for the analysis of EM scattering of open-ended cavities coated with the dielectric.

关键词： edge-based finite element method layered dielectric impedance boundary condition(IBC) generalized reflection coefficient coated