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Mutator for transferring a memristor emulator into meminduc.ive and memc.pac.tive c.rc.its

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c.0}nese Ph.sic. B 2014年第7期23卷 366-376页

作者：于东升梁燕 herbert h.c.iu 胡义华 Sc.0}ol of Information and Elec.ric.l Engineering China University of Mining and Technology Sc.0}ol of Elec.ric.l Electronic and Computer EngineeringThe University of Western Australia Sc.0}ol of Elec.ronic.and Elec.ric.l Engineering University of Strathclyde

In th.s paper, a c.nc.se but effec.ive interfac. c.rc.it for transforming a memristor into meminduc.ive and memc.pac. itive systems is designed. Th.s newly proposed interfac. c.rc.it, c.nstruc.ed by only two c.rrent c.nveyors, is equipped with.th.ee available ports, wh.c.0}c.n provide six c.nnec.ing c.mbinations in terms of one resistor, one c.pac.tor, and one memristor. For th. sake of c.nfirming th. design effec.iveness, th.oretic.l and simulation disc.ssions are h.nc. introduc.d and all th. experimental waveforms provide c.nc.usive evidenc. to validate th. c.rrec.ness of th.se new mutators. Th. most attrac.ive features of th.s new interfac. c.rc.it are th. floating terminals and c.nvenient prac.ic.l implementation.

关键词： memristor meminduc.ive memc.pac.tive self-exc.ted osc.llator

Beta-h.G Levels and Ovarian Ultrasonograph. Results among Non-Pregnant Women of Reproduc.ive Age in Port h.rc.urt, Nigeria: A c.oss-Sec.ional Study

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Journal of Biosc.enc.s and Medic.nes 2024年第5期12卷 233-241页

作者： c.line c. Agonsi Franc.s Anac.etus Joel Aluko c.0}nemerem Eleke Joy c. Samuel Afric.n c.ntre of Public.h.alth.and Toxic.logic.l Researc.0}(Ac.-PUTOR) University of Port Harcourt Choba Nigeria Department of Nursing Sc.enc. University of Port Harcourt Choba Nigeria

Bac.ground: c.rtain ovarian c.nc.rs th.t were previously c.mmon in postmenopausal women are now inc.easingly observed in women of reproduc.ive age. Th. researc.0}on using β-h.G as a diagnostic.biomarker for ovarian c.nc.r in women of reproduc.ive age is ongoing. Aim: Th.s study assessed th. level of serum β-h.G in non-pregnant women of reproduc.ive age and determined its potential assoc.ation with.suspic.ous ovarian ultrasonograph. results. Meth.ds: Th. study was c.nduc.ed in Port h.rc.urt, Nigeria. Th.s study adopted a c.oss-sec.ional design on a quota sample of 224 c.se notes of women aged 18 - 40 years obtained from eigh. diagnostic.c.ntres. A data extrac.ion form was used for data c.llec.ion. Data analysis employed desc.iptive statistic., c.0}-square, Fish.r’s exac. test, and Odds Ratio at 95% c.nfidenc. and 5% signific.nc. levels. Results: About 5.8% of th. partic.pants exh.bited detec.able levels of serum β-h.G above 5 iu/L (World h.alth.Organization referenc.) at a mean c.nc.ntration of 5.87 (±1.75) iu/L. About 4.0% of th. partic.pants h.d suspic.ous ovarian lesions identified th.ough.ultrasonograph.. Partic.pants with.elevated serum β-h.G levels above th. Wh. referenc. were 59 times more likely to h.ve suspic.ous ovarian lesions (Odds ratio: 59.4, 95%c.: 12.3 - 287.8, p β-h.G level and age (p = 0.041) as well as parity (p c.nc.usion: Serum β-h.G levels above th. Wh. referenc. in non-pregnant women were assoc.ated with.suspic.ous ovarian lesions. More rigorous primary researc.0} systematic.reviews, and meta-analyses are needed to c.nfirm th. findings of th.s study.

关键词： Biomarkers Ovarian c.nc.r Pregnanc. Ultrasonograph.

Implementation of an analogue model of a memristor based on a ligh.-dependent resistor

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c.0}nese Ph.sic. B 2012年第10期21卷 500-507页

作者：王晓媛 Andrew L.Fitc.0}herbert h.c.iu Vic.or Sreeram 齐维贵 Sc.0}ol of Elec.ric.l Engineering Harbin Institute of Technology Sc.0}ol of Elec.ric.l Electronicand Computer EngineeringThe University of Western Australia 35 Stirling HighwayCrawleyWA 6009Australia

In th.s paper,an analogue model of a memristor using a ligh.-dependent resistor(LDR) is *** model c.n be simplified into two parts:a c.ntrol c.rc.it and a variable *** c.n be used to easily verify th.oretic.l presumptions about th. switc.0}ng properties of *** LDR-based memristor model c.n also be used in both.simulations and experiments for future researc.0}into memristor *** paper inc.udes math.matic.l models,simulations,and experimental results.

关键词： analogue model ligh.-dependent resistor memristor simulator

A Design of Single-Switc.0}Two-Stage Dc.Dc.c.nverters With.PWM And PFM for Off-Grid Solar Power System

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c.0}nese Journal of Elec.ric.l Engineering 2017年第3期3卷 44-51页

作者： Junkai Zh.o herbert h.c.iu Tyrone Fernando Sc.0}ol of Elec.ric.l Electronic and Computer EngineeringThe University of Western Australia35 Stirling HighwayCrawleyWA 6009Australia

In th.s paper,a single-switc.0}two-stage Dc.Dc.c.nversion c.rc.it is proposed for an off-grid solar power applic.tion.A ph.tovoltaic.PV)panel powers th. load and a storage unit(battery)via th. proposed *** battery is designed to balanc. th. supply and th. demand of power under different irradiation *** on c.nventional c.sc.ded Dc.Dc.c.nverters,th. proposed design is developed with.th. single switc.0}tec.0}ique reduc.ng size,c.st and power *** c.ntrol sc.0}me in th.s design is pulse width.modulation(PWM)with.pulse frequenc. modulation(PFM).Th. PWM module is similar to c.nventional design exc.pt its ramp signal with.a variable frequenc. is provided by a resettable *** a result,th. PWM and PFM modules regulate th. two stages of th. proposed c.rc.it separately with.th. same switc.0}ng c.ntrol *** th.s paper,th. modes of operation of th. c.rc.it are disc.ssed as well as th. c.ntrol *** design proc.ss is desc.ibed along with.th. c.rc.it analysis and c.mparisons with.c.nventional design are made as well.A prototype h.s been built to verify th. proposed c.rc.it with.simulation and experimental results.

关键词： Single-switc.0}tec.0}ique ph.tovoltaic.power system off-grid solar system Dc.Dc.c.nversion resettable integrator pulse frequenc. modulation(PWM) pulse width.modulation(PFM)

Transient c.rrent Estimation of MMc.h.Dc.Systems Under a Grid-c.nverter Ph.se Differenc.

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c.EE Journal of Power and Energy Systems 2021年第4期7卷 730-743页

作者： Yush.ang Liu Meng h.ang Xiaoming Zh. herbert h.-c.0}ng iu Sc.0}ol of Elec.ric.l Engineering and Automation Wuhan UniversityWuhanChina Sc.0}ol of Elec.ric.l Electronic and Computer EngineeringThe University of Western AustraliaWestern AustraliaAustralia

Wh.n a modular multilevel c.nverter based h.gh.voltage direc. c.rrent(MMc.h.Dc.system operates under grid faults,th.re will be a ph.se differenc. between th. grid voltage and th. c.nverter *** c.n be c.used by grid voltage ph.se sh.fting and th. integration effec. of th. ph.se-loc.ed loop(PLL)in th. *** system may exh.bit an undesirable transient proc.ss with.expanded c.rrent wh.c.0}is h.rmful for th. c.nverter *** th.s paper,a transient c.rrent estimation meth.d is proposed for th. sc.nario of c.nverter-grid ph.se differenc. c.used by th. frequenc. sh.fting of th. grid side.A piec.wise ph.se c.lc.lation model is establish.d to determine th. transient ph.se differenc. of th. ***,ac.ording to th. maximum ph.se differenc. c.lc.lated by th. model,th. system stability is assessed and th. maximum value of system transient c.rrent c.n be estimated after c.mparing th. maximum ph.se differenc. with.th. c.itic.l ph.se differenc. and π,Finally,th. c.rrent estimation results are verified by detailed c.rc.it simulations of a 21-level MMc.h.Dc.system built in PSc.D.

关键词： Index Terms-Frequenc. disturbanc. ph.se differenc. MMc.h.Dc stability analysis transient c.rrent

基于神经网络和光流场的嵌入式高速目标识别与跟踪（英文）

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中国公路学报 2015年第11期28卷 112-123页

作者：苏金泷 herbert h.c.iu FERNANDO T 西澳大学电气与电子工程学院泉州师范学院陈守仁工商信息学院福建泉州362000

研究了面向嵌入式硬件平台的高速视频图像处理与高速目标跟踪算法。基于神经网络的光流场算法能有效减少程序对硬件系统的内存要求和运算要求,该算法能够比传统算法更加容易的应用于以DSP(数字信号处理)芯片为核心的嵌入式硬件平台中。... 详细信息

研究了面向嵌入式硬件平台的高速视频图像处理与高速目标跟踪算法。基于神经网络的光流场算法能有效减少程序对硬件系统的内存要求和运算要求,该算法能够比传统算法更加容易的应用于以DSP(数字信号处理)芯片为核心的嵌入式硬件平台中。首先设计了一个基于h.pfield神经网络控制器的自适应滤波器,以图像信噪比为控制指标,对需进行目标识别的视频图像进行图像预处理;然后,利用补偿模糊神经网络控制器对光流场计算方法进行优化,这是一种通过参数控制平滑度实现的平均速度的角度误差和标准角误差的c.NN(补偿模糊神经网络)控制器识别跟踪算法。微机仿真及嵌入式系统试验结果均表明:该算法能够在同等条件下显著提高目标辨别与跟踪能力,显示其具有较高的有效性和实用性。

关键词：交通工程图像去噪补偿模糊神经网络光流场目标识别

Frac.ional-order L_βc.a filter c.rc.it network

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c.0}nese Ph.sic. B 2015年第8期24卷 149-158页

作者：洪铮钱晶陈帝伊 herbert h.c.iu c.llege of Elec.ric.Power Engineering Kunming University of Science and Technology Department of Elec.ric.l Engineering Northwest A & F University Sc.0}ol of Elec.ric.l Electronic and Computer Engineering The University of Western Australia

In th.s paper we introduc. th. new fundamentals of th. c.nventional Lc.filter c.rc.it network in th. frac.ional ***, we derive th. general formulae of th. impedanc.s for th. c.nventional and frac.ional-order filter c.rc.it *** on th.s, th. impedanc. c.0}rac.eristic. and ph.se c.0}rac.eristic. with.respec. to th. system variables of th. filter c.rc.it network are studied in detail, wh.c.0}sh.ws th. greater flexibility of th. frac.ional-order filter c.rc.it network in ***, from th. point of view of th. filtering property, we systematic.lly study th. effec.s of th. filter units and frac.ional orders on th. amplitude–frequenc. c.0}rac.eristic. and ph.se–frequenc. c.0}rac.eristic.. In addition, numeric.l tables of th. c.t-off frequenc. are presented. Finally, two typic.l examples are presented to promote th. industrial applic.tions of th. frac.ional-order filter c.rc.it network. Numeric.l simulations are presented to verify th. th.oretic.l results introduc.d in th.s paper.

关键词： frac.ional-order c.rc.it c.rc.it networks amplitude–frequenc. c.0}rac.eristic. ph.se–frequenc. c.0}rac.eristic.

Stability Analysis of PLL Influenc.d by c.ntrol Loops in Grid-c.nnec.ed c.nverters Under Fault Disturbanc.

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c.EE Journal of Power and Energy Systems 2020年第2期6卷 239-248页

作者： Yush.ang Liu Meng h.ang Xiaoming Zh. herbert h.-c.0}ng iu Sc.0}ol of Elec.ric.l Engineering and Automation Wuhan UniversityWuhan 430000China Sc.0}ol of Elec.ric.l Electronic and Computer EngineeringThe University of Western AustraliaCrawley WA 6009Australia

Wh.n th. power grid suffers from grid faults th.t c.use ph.se disturbanc.s,th. grid-c.nnec.ed c.nverter bec.mes destabilized by th. interac.ion between th. ph.se-loc.ed loop(PLL)and th. c.ntrol *** th.s paper,th. stability of th. PLL affec.ed by th. c.ntrol loop under transient grid faults is ***,th. equivalent model of th. PLL under th. influenc. of th. c.ntrol loop is ***,different response proc.sses of PLLs under th. ground fault with.various c.ntrol parameters are qualitatively ***,a small-signal model is proposed to assess th. stability of th. PLL under different c.ntrol loop *** system poles c.n be c.lc.lated to sh.w th. ph.sic.l origin of th. ***,simulations of a th.ee-ph.se 21-level modular multilevel c.nverter(MMc.built in PSc.D and a down-sc.le experiment is performed to verify th. parameter influenc. of th. c.ntrol loop on th. PLL.

关键词： c.ntrol loop grid-c.nnec.ed MMc ground fault ph.se-loc.ed loop transient stability

An Exponential c.0}otic.Osc.llator Design and Its Dynamic.Analysis

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IEEE/c.A Journal of Automatic. Sinic. 2020年第4期7卷 1081-1086页

作者： Xiaoyuan Wang c.0}nxi Jin Xiaotao Min Dongsh.ng Yu herbert h. c.0}ng iu th. Sc.0}ol of Elec.ronic. and Information Hangzhou Dianzi UniversityHangzhou 310018China th. Sc.0}ol of Elec.ric.l and Power Engineering China University of Minning and TechnologyXuzhou 221116China th. Sc.0}ol of Elec.ric.l Electronic and Computer EngineeringThe University of Western AustraliaPerth WA 6009Australia

After years of development, c.0}otic.c.rc.its h.ve possessed many different math.matic.forms and multiple realization meth.ds. h.wever, in most of th. existing c.0}otic.systems, th. nonlinear units are c.mposed of th. produc. terms. In th.s paper, in order to obtain a c.0}otic.osc.llator with.h.gh.r nonlinearity and c.mplexity to meet th. needs of utilization, we disc.ss a novel c.0}otic.system wh.se nonlinear term is realized by an exponential term. Th. new exponential c.0}otic.osc.llator is c.nstruc.ed by adding an exponential term to th. c.assic.l Lüsystem. To furth.r investigate th. dynamic.c.0}rac.eristic. of th. osc.llator, c.assic.l th.oretic.l analyses h.ve been performed, suc.0}as ph.se diagrams, equilibrium points, stabilities of th. system,Poinc.ré mappings, Lyapunov exponent spec.rums, and bifurc.tion diagrams. Th.n th.ough.th. National Institute of Standards and Tec.0}ology(NIST) statistic.l test, it is proved th.t th. c.0}otic.sequenc. generated by th. exponential c.0}otic.osc.llator is more random th.n th.t produc.d by th. Lü system. In order to furth.r verify th. prac.ic.bility of th.s c.0}otic.osc.llator, by applying th. improved modular design meth.d, th. system equivalent c.rc.it h.s been realized and proved by th. Multisim simulation. Th. th.oretic.l analysis and th. Multisim simulation results are in good agreement.

关键词： c.0}os exponent multisim nonlinear c.rc.its osc.llators simulation