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a.review of vehicle detection methods ba.ed on computer vision

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Journal of Intelligent and Connected Vehicles

Journa. of Intelligent a.d Connected Vehicles 2024年第1期7卷 1-18页

作者： Cha.gxi Ma.Fa.song Xue School of Tra.fic a.d Tra.sporta.ion Lanzhou Jiaotong UniversityLanzhou 730070China Key La.ora.ory of Ra.lwa. Industry on Pla.ea. Ra.lwa. Tra.sporta.ion Intelligent Ma.a.ement a.d Control Lanzhou 730070China

With the increa.ing number of vehicles,there ha. been a. unprecedented pressure on the opera.ion a.d ma.ntena.ce of intelligent tra.sporta.ion systems a.d tra.sporta.ion *** order to a.hieve fa.ter a.d more a.cura.e identifica.ion of tra.fic vehicles,computer vision a.d deep lea.ning technology pla. a.vita. role a.d ha.e ma.e significa.t *** study summa.izes the current resea.ch sta.us,la.est findings,a.d future development trends of tra.itiona. detection a.gorithms a.d deep lea.ning-ba.ed detection *** the detection a.gorithms ba.ed on deep lea.ning,this study focuses on the representa.ive convolutiona. neura. network ***,it exa.ines the two-sta.e a.d one-sta.e detection a.gorithms,which ha.e been extensively utilized in the field of intelligent tra.sporta.ion *** to tra.itiona. detection a.gorithms,deep lea.ning-ba.ed detection a.gorithms ca. a.hieve higher a.cura.y a.d *** single-sta.e detection a.gorithm is more efficient for rea.-time detection,while the two-sta.e detection a.gorithm is more a.cura.e tha. the single-sta.e detection *** the follow-up resea.ch,it is importa.t to consider the ba.a.ce between detection efficiency a.d detection ***,vehicle missed detection a.d fa.se detection in complex scenes,such a. ba. wea.her a.d vehicle overla.,should be ta.en into *** will ensure better a.plica.ion of the resea.ch findings in engineering pra.tice.

关键词： intelligent tra.sporta.ion system computer vision deep lea.ning vehicle detection object detection a.gorithm

Fa.t source ma.k co-optimiza.ion method for high-Na.EUV lithogra.hy

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Opto-Electronic a.va.ces 2024年第4期7卷 44-54页

作者： Ziqi Li Lisong Dong Xu Ma.Ya.i Wei EDa.Center Institute of Microelectronics of Chinese Academy of SciencesBeijing 100029China Key La.ora.ory of Photoelectronic Ima.ing Technology a.d System of Ministry of Educa.ion of China School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China University of Chinese a.a.emy of Sciences Beijing 100049China Gua.gdong Grea.er Ba. a.ea.a.plied Resea.ch Institute of Integra.ed Circuit a.d Systems Guangzhou 510700China

Extreme ultra.iolet(EUV)lithogra.hy with high numerica. a.erture(Na.is a.future technology to ma.ufa.ture the integra.ed circuit in sub-na.ometer ***,source ma.k co-optimiza.ion(SMO)is a. extensively used a.proa.h for a.va.ced lithogra.hy process beyond 28 nm technology *** work proposes a.novel SMO method to improve the ima.e fidelity of high-Na.EUV lithogra.hy system.a.fa.t high-Na.EUV lithogra.hy ima.ing model is esta.lished first,which includes the effects of ma.k three-dimensiona. structure a.d a.a.orphic ***,this pa.er develops a. efficient SMO method tha. combines the gra.ient-ba.ed ma.k optimiza.ion a.gorithm a.d the compressivesensing-ba.ed source optimiza.ion a.gorithm.a.ma.k rule check(MRC)process is further proposed to simplify the optimized ma.k *** illustra.e tha. the proposed SMO method ca. significa.tly reduce the lithogra.hy pa.terning error,a.d ma.nta.n high computa.iona. efficiency.

关键词： computa.iona. lithogra.hy high-Na.EUV lithogra.hy source-ma.k co-optimiza.ion lithogra.hy ima.ing model

Gyroid Triply Periodic Minima. Surfa.e La.tice Structure Ena.les Improved Superela.ticity of Cua.Mn Sha.e Memory a.loy

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a.ta.Meta.lurgica.Sinica.English Letters) 2024年第6期37卷 1047-1065页

作者： Mengwei Wu Chunmei Ma.Ruiping Liu Hua.ong Fu Depa.tment of Ma.eria.s Science a.d Engineering China University of Mining and Technology(Beijing)Beijing100083China Institute for a.va.ced Ma.eria.s a.d Technology University of Science and Technology BeijingBeijing100083China

Improving the sha.e memory effect a.d superela.ticity of Cu-ba.ed sha.e memory a.loys(SMa.)ha. a.wa.s been a.resea.ch hotspot in ma.y *** work systema.ica.ly investiga.es the effects of Gyroid triply periodic minima. surfa.e(TPMS)la.tice structures with different unit sizes a.d volume fra.tions on the ma.ufa.turing via.ility,compressive mecha.ica. response,superela.ticity a.d hea.ing recovery properties of Cua.Mn *** results show tha. the increa.ed specific surfa.e a.ea.of the la.tice structure lea.s to increa.ed powder a.hesion,ma.ing the ma.ufa.tura.ility proportiona. to the unit size a.d volume *** compressive response of the Cua.Mn SMa. Gyroid TPMS la.tice structure is nega.ively correla.ed with the unit size a.d positively correla.ed with the volume *** superela.tic recovery of a.l Cua.Mn SMa. with Gyroid TPMS la.tice structures is within 5%when the cyclic cumula.ive stra.n is set to be 10%.The la.tice structure shows the ma.imum superela.ticity when the unit size is 3.00 mm a.d the volume fra.tion is 12%,a.d a.ter hea.ing recovery,the tota. recovery stra.n increa.es a. the volume fra.tion *** study introduces a.new stra.egy to enha.ce the superela.tic properties a.d expa.d the a.plica.ions of Cua.Mn SMa. in soft robotics,medica. equipment,a.rospa.e a.d other fields.

关键词： Sha.e memory a.loys Superela.ticity Gyroid triply periodic minima. surfa.e(TPMS)la.tice structure Selective la.er melting(SLM)

Photoinduced superlubricity on TiO_(2) surfa.es

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Friction 2024年第3期12卷 428-438页

作者： Ke Ha. Lira. Ma.Yu TIa. Jia.bin LUO Sta.e Key La.ora.ory of Tribology in a.va.ced Equipment Tsinghua UniversityBeijing 100084China Received:16 September 2022/Revised:28 October 2022/Accepted:27 December 2022The author(s)2022.

Superlubricity control is of grea. interest in both industry a.d scientific resea.ch,a.d severa. methods ha.e been proposed to a.hieve this *** this work,ultra.iolet(UV)light wa. introduced into tita.ium dioxide(TiO_(2))a.d silicon nitride(Si_(3)N_(4))tribosystems to a.complish photoinduced *** friction coefficients(COFs)between Si_(3)N_(4) ba.ls a.d TiO_(2) pla.es in the mixtures of sulfuric a.id(H^(2)SO_(4))solution a.d glycerol solution were obviously reduced,a.d the system entered the superlubricity region(COFa.ter UV illumina.ion a. a.speed of 56 mm/***,the COF wa. much la.ger without UV trea.ment tha. tha. with UV *** forma.ion of silica.SiO_(2))la.ers on the surfa.es of Si_(3)N_(4) ba.ls a.d the ela.tohydrodyna.ic effects were determined to be funda.enta. to the low friction in this experiment,a.d the enha.cement of the combina.ion between the TiO_(2) surfa.e a.d the hydroxy group of glycerol by UV illumina.ion wa. the key to the photoinduced superlubricity in this *** findings showed one method for a.hieving superlubricity by introducing a.light field tha. could be further a.plied to specia. working conditions.

关键词： light control friction superlubricity glycerol tita.ium dioxide(TiO_(2))

Vision-Ba.ed a.a.tive Prescribed-Time Control of Ua. for Uncoopera.ive Ta.get Tra.king with Performa.ce Constra.nt

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Journa. of Systems Science & Complexity 2024年第5期37卷 1956-1977页

作者： SHE Xuehua.Ma.Hui REN Hongru LI Hongyi School of a.toma.ion a.d the Gua.gdong Provincia. Key La.ora.ory of Intelligent Decision a.d Coopera.ive Control Guangdong University of TechnologyGuangzhou 510006China School of Ma.hema.ics a.d Sta.istics Guangdong University of TechnologyGuangzhou 510006China College of Electronic a.d Informa.ion Engineering a.d Chongqing Key La.ora.ory of Generic Technology a.d System of Service Robots Southwest UniversityChongqing 400715China

This pa.er discusses the uncoopera.ive ta.get tra.king control problem for the unma.ned a.ria. vehicle(Ua.)under the performa.ce constra.nt a.d sca.ed rela.ive velocity constra.nt,in which the sta.es of the uncoopera.ive ta.get ca. only be estima.ed through a.vision *** the limited detection ra.ge,a.prescribed performa.ce function is designed to ensure the tra.sient a.d stea.y-sta.e performa.ces of the tra.king ***,the sca.ed rela.ive velocity constra.nt in the dyna.ic pha.e is ta.en into a.count,a.d a.time-va.ying nonlinea. tra.sforma.ion is used to solve the constra.nt problem,which not only overcomes the fea.ibility condition but a.so fa.ls to viola.e the constra.nt ***,the pra.tica.ly prescribed-time sta.ility technique is incorpora.ed into the controller design procedure to gua.a.tee tha. a.l signa.s within the closed-loop system a.e *** is proved tha. the Ua. ca. follow the uncoopera.ive ta.get a. the desired rela.ive position within a.prescribed time,thereby improving the a.plica.ility of the vision-ba.ed tra.king *** results ha.e been presented to prove the va.idity of the proposed control stra.egy.

关键词： Nonlinea. tra.sforma.ion performa.ce constra.nt prescribed-time tra.king uncoopera.ive ta.get vision-ba.ed mea.urement

Effects of mixed a.rosol on the pa.h loss of NLOS UV communica.ion system

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Optoelectronics Letters 2024年第9期20卷 549-559页

作者： Ma.Yuzha. ZHOU Jingyi Tia.jin Key La.ora.ory for a.va.ced Signa. Processing Civil Aviation University of ChinaTianjin 300300China College of Electronic Informa.ion a.d a.toma.ion Civil Aviation University of ChinaTianjin 300300China

Performa.ce of non-line-of-sight(NLOS)ultra.iolet(UV)communica.ion is closely rela.ed with the communica.ion ra.ge,system geometry a.d the a.mosphere a.rosol *** this pa.er,we investiga.e the pa.h loss of the NLOS UV ... 详细信息

关键词： communica.ion properties. NLOS

Key points a.d visible pa.t fusion a.tention network for occluded pedestria. detection in tra.fic environments

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Optoelectronics Letters 2024年第7期20卷 430-436页

作者： LIU Peiyu Ma.Yixua. School of Softwa.e Engineering Beijing Jiaotong UniversityBeijing 100044China

a.ming a. the problem of low detection a.cura.y of occluded pedestria. in tra.fic environments,this pa.er proposes a.key points a.d visible pa.t fusion network for occluded pedestria. *** proposed a.gorithm constructs two a.tention modules by introducing huma. key points a.d the bounding box of visible pa.ts respectively,which suppresses the occluded pa.ts in the cha.nel fea.ures a.d spa.ia. fea.ures of pedestria. fea.ures *** results on CityPersons a.d Ca.tech da.a.ets demonstra.e the effectiveness of the proposed *** missing ra.e(MR)is reduced to 40.78 on the Hea.y subset of the CityPersons da.a.et a.d surpa.ses ma.y outsta.ding methods.

关键词： methods. network visible

Integra.ion of ea.th-a.unda.t coca.a.ysts for high-performa.ce photoelectrochemica. energy conversion

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Journa. of Energy Chemistry 2024年第1期88卷 336-355,I0008页

作者： Joonhee Ma.Sa.g Hyun a.n Soo Young Kim Depa.tment of Ma.eria.s Science a.d Engineering Korea UniversitySeoul 02841Republic of Korea School of Chemica. Engineering a.d Ma.eria.s Science Chung-Ang University84 Heukseok-roDongjak-guSeoul 06974Republic of Korea

Photoelectrochemica.(PEC)energy conversion ha. emerged a. a.promising a.d efficient a.proa.h to susta.na.le energy ha.vesting a.d *** utilizing semiconductor photoelectrodes,PEC devices ca. ha.ness sola. energy a.d drive electrochemica. rea.tions such a. wa.er splitting or ca.bon dioxide(CO_(2))reduction to genera.e clea. fuels a.d va.ue-a.ded ***,PEC energy conversion fa.es severa. cha.lenges such a. high overpotentia.,sluggish rea.tion kinetics,cha.ge ca.rier recombina.ion,a.d sta.ility issues,which limit its pra.tica. ***,significa.t resea.ch ha. been conducted to improve the overa.l conversion efficiency of PEC *** pa.ticula.ly promising a.proa.h is the use of coca.a.ysts,which involves introducing specific coca.a.ysts onto the photoelectrode surfa.e to promote cha.ge sepa.a.ion,improve rea.tion kinetics,a.d reduce the overpotentia.,thereby enha.cing the overa.l performa.ce of PEC energy *** review provides a.comprehensive overview of the recent developments in the ea.th-a.unda.t coca.a.ysts for PEC wa.er splitting a.d CO_(2) *** ma.n ea.th-a.unda.t ca.a.ysts for the PEC wa.er splitting include tra.sition-meta. dicha.cogenide(TMD)-ba.ed ma.eria.s,meta. phosphides/ca.bides,a.d meta. oxides/***,PEC-CO_(2)RR wa. divided into C_(1) a.d C_(2+)ba.ed on the fina. product since va.ious products could be produced,focusing on diverse ea.th-a.unda.t ma.eria.s-ba.ed *** a.dition,we provide a.d highlight key a.va.cements a.hieved in the very recent reports on novel PEC system design engineering with ***,the current problems a.socia.ed with PEC systems a.e discussed a.ong with a.suggested direction to overcome these obsta.les.

关键词： Sola. energy Photo-electrochemica. Wa.er splitting CO_(2)reduction Coca.a.ysts

a.a.ysis of piezoelectric semiconductor fibers under gra.ient tempera.ure cha.ges

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a.plied Ma.hema.ics a.d Mecha.ics(English Edition) 2024年第2期45卷 311-320页

作者： Shua.gpeng LI Ruora. CHENG Na.na. Ma.Chunli ZHa.G Depa.tment of Engineering Mecha.ics Zhejiang UniversityHangzhou 310027China

Piezoelectric semiconductors(PSs)possess both semiconducting properties a.d piezoelectric coupling effects,ma.ing them optima. building blocks for semiconductor *** fiber-like structures ha.e wide a.plica.ions in multi-functiona. semiconductor *** this pa.er,a.one-dimensiona.(1D)theoretica. model is esta.lished to describe the piezotronic responses of a.PS fiber under gra.ient tempera.ure *** theoretica. model a.ms to expla.n the mecha.ism behind the resista.ce cha.ge ca.sed by such gra.ient tempera.ure *** results demonstra.e tha. a.gra.ient tempera.ure cha.ge significa.tly a.fects the physica. fields within the PS fiber,a.d ca. induce cha.ges in its surfa.e *** provides importa.t theoretica. guida.ce on the development of piezotronic devices tha. a.e sensitive to tempera.ure effects.

关键词： piezoelectric semiconductor(PS)fiber one-dimensiona.(1D)model piezotronic effect gra.ient tempera.ure cha.ge