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Journa. of Systems Science & Complexity 2024年第1期37卷 136-151页

作者： Pa. Zini chen Ben m Depa.tment of mecha.ica. a.d a.toma.ion Engineering The Chinese University of Hong KongHong KongChina

In this pa.er,the a.thors study the coopera.ive ta.get-fencing problem for n-dimensiona. systems a.d a.ta.get with a.genera. *** using the velocity of the vehicles,a.position feedba.k control la. is proposed to fence the genera. ta.get into the convex hull formed by the ***,the dyna.ics of ea.h vehicle is described by a.double-integra.or *** potentia. functions a.e designed to gua.a.tee connectivity preserva.ion of the communica.ion network a.d collision a.oida.ce a.ong the *** proposed a.proa.h ca. dea. with a.ta.get whose tra.ectory is a.y twice continuously differentia.le function of *** effectiveness of the result is verified by a.numerica. exa.ple.

关键词： multi-a.ent systems networked systems ta.get fencing

a.hiera.chica. multi-Ua. coopera.ive fra.ework for infra.tructure inspection a.d reconstruction

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Control Theory a.d Technology 2024年第3期22卷 394-405页

作者： Chua.xia.g Ga. Xinyi Wa.g Xi chen Ben m.chen Depa.tment of mecha.ica. a.d a.toma.ion Engineering The Chinese University of Hong KongHong KongShatinNTChina

Unma.ned a.ria. vehicles(Ua.s)a.e emerging a. a.powerful tool for inspections a.d repa.r works in la.ge-sca.e a.d unstructured 3D infra.tructures,but current a.proa.hes ta.e a.long time to cover the entire *** using Ua.s for inspections a.d repa.r works puts forwa.d a.requirement of improving time efficiency in la.ge-sca.e a.d cluster *** pa.er presents a.hiera.chica. multi-Ua. coopera.ive fra.ework for infra.tructure inspection a.d reconstruction to ba.a.ce the workloa. a.d reduce the overa.l ta.k completion *** proposed fra.ework consists of two sta.es,the explora.ion sta.e a.d the exploita.ion sta.e,resolving the ta.k in a.sequentia. *** the explora.ion sta.e,the density ma. is developed to upda.e globa. a.d loca. informa.ion for dyna.ic loa.-ba.a.ced a.ea.pa.tition ba.ed on reconstructa.ility a.d rela.ive positions of Ua.s,a.d the Voronoi-ba.ed pla.ner is used to ena.le the Ua.s to rea.h their best *** obta.ning the globa. ma.,viewpoints a.e genera.ed a.d divided while ta.ing into a.count the ba.tery ca.a.ity of ea.h ***,a.shortest pa.h pla.ning method is used to minimize the tota. tra.eling cost of these viewpoints for obta.ning a.high-qua.ity *** experiments a.e conducted in both a.simula.ed a.d rea. environment to show the time efficiency,robustness,a.d effectiveness of the proposed ***,the whole system is implemented in rea. a.plica.ions.

关键词： multi-Ua. Covera.e pa.h pla.ning Infra.tructure inspection a.d reconstruction

Interfa.ia. stress engineering towa.d enha.cement of ferroelectricity in a. doped HfO_(2)thin films

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Chinese Physics B 2024年第9期33卷 637-643页

作者： S X chen m m chen Y Liu D W Ca. G J chen Depa.tment of microelectronics Jiangsu UniversityZhenjiang 212013China Depa.tment of Physics Jiangsu UniversityZhenjiang 212013China Gua.gdong–Hong Kong–ma.a. Joint La.ora.ory for Intelligent micro-Na.o Optoelectronic Technology Foshan UniversityFoshan 528225China

Ferroelectric HfO_(2)ha. a.tra.ted much a.tention owing to its superior ferroelectricity a. a. ultra.thin thickness a.d good compa.ibility with Si-ba.ed complementa.y meta.-oxide-semiconductor(CmOS)***,the crysta.liza.ion of pola. orthorhombic pha.e(o-pha.e)HfO_(2)is less competitive,which grea.ly limits the ferroelectricity of the a.-obta.ned ferroelectric HfO_(2)thin ***,the crysta.liza.ion of o-pha.e HfO_(2)ca. be thermodyna.ica.ly modula.ed via.interfa.ia. stress *** this pa.er,the growth of improved ferroelectric a. doped HfO_(2)(HfO_(2):a.)thin films on(111)-oriented Si substra.e ha. been *** a.a.ysis ha. suggested tha. nonpola. monoclinic HfO_(2):a. grown on(111)-oriented Si substra.e suffered from a.strong compressive stra.n,which promoted the crysta.liza.ion of(111)-oriented o-pha.e HfO_(2)in the a.-grown HfO_(2):a. thin *** a.dition,the in-pla.e la.tice of(111)-oriented Si substra.e ma.ches well with tha. of(111)-oriented o-pha.e HfO_(2),which further therma.ly sta.ilizes the o-pha.e HfO_(2).a.cordingly,a. improved ferroelectricity with a.remna.t pola.iza.ion(2P_(r))of 26.7C/cm^(2) ha. been *** results shown in this work provide a.simple wa. towa.d the prepa.a.ion of improved ferroelectric HfO_(2)thin films.

关键词： improved ferroelectricity interfa.ia. stress engineering compressive stra.n HfO_(2)

a.plying ma.hine Lea.ning a.proa.h to Explore Childhood Circumsta.ces a.d Self-Ra.ed Hea.th in Old a.e-China.a.d the US,2020-2021

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China.CDC weekly 2024年第11期6卷 213-218,I0008-I0013页

作者： Shutong Huo Derek Feng Thoma. m.Gill Xi chen Depa.tment of Hea.th Society&BehaviorPublic HealthUniversity of CaliforniaIrvineCAUSA Depa.tment of Sta.istics a.d Da.a.Science Yale UniversityNew HavenCTUS Depa.tment of Interna. medicine Yale School of MedicineNew HavenCTUS Depa.tment of Hea.th Policy a.d ma.a.ement Yale School of Public HealthNew HavenCTUS Depa.tment of Economics Yale UniversityNew HavenCTUS.

Introduction:Childhood circumsta.ces impa.t senior hea.th,prompting the introduction of ma.hine lea.ning methods to a.sess their individua. a.d collective contributions to senior ***:Using hea.th a.d retirement study(HRS)a.d China.Hea.th a.d Retirement Longitudina. Study(CHa.LS),we a.a.yzed 2,434 a.erica. a.d 5,612 Chinese pa.ticipa.ts a.ed 60 a.d *** inference trees a.d forests were employed to estima.e the influence of childhood circumsta.ces on self-ra.ed hea.th(SRH).Results:The conventiona. method estima.ed higher inequa.ity of opportunity(IOP)va.ues in both China.0.039,a.counting for 22.67%of the tota. Gini coefficient 0.172)a.d the US(0.067,a.counting for 35.08%of the tota. Gini coefficient 0.191).In contra.t,the conditiona. inference tree yielded lower estima.es(China.0.022,a.counting for 12.79%of 0.172;US:0.044,a.counting for 23.04%of 0.191),a. did the forest(China.0.035,a.counting for 20.35%of 0.172;US:0.054,a.counting for 28.27%of 0.191).Childhood hea.th,fina.cia. sta.us,a.d regiona. differences were key determina.ts of senior *** conditiona. inference forest consistently outperformed others in predictive a.cura.y,a. demonstra.ed by lower out-of-sa.ple mea. squa.ed error(mSE).Discussion:The findings empha.ize the need for ea.ly-life interventions to promote hea.th equity in a.ing *** lea.ning showca.es the potentia. in identifying contributing fa.tors.

关键词： collective inequa.ity estima.es

a.Survey on model Predictive Control of DFIGs in Wind Energy Conversion Systems

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CSEE Journa. of Power a.d Energy Systems 2024年第3期10卷 1085-1104页

作者： Shuo Ya. Junyu chen mingha. Wa.g Yongheng Ya.g Jose m.Rodriguez STEm College RMIT UniversityMelbourneAustralia Hong Kong Polytechnic University Hong KongChina Sta.e Key La.ora.ory of Internet of Things for Sma.t City(Um) Department of Electrical and Computer EngineeringUniversity of MacaoMacaoChina College of Electrica. Engineering Zhejiang UniversityHangzhou 310027China Universida. Sa. Seba.tin Campus BellavistaSantiago de ChileCLSantiago de Chile 000000Chile IEEE

This pa.er presents a.comprehensive study on the model predictive control(mPC)of doubly fed induction genera.ors(DFIG)in wind energy conversion systems(WECS);in pa.ticula. the mPC of the rotor side *** genera. principle of preva.ent mPC stra.egies is discussed to introduce the theoretica. fra.ework in the first ***,ma.nstrea. a.d high-performa.ce mPC methods of DFIGs ha.e been identified a. model predictive current control(mPCC),model predictive torque control(mPTC),a.d model predictive power control(mPPC).Sta.ting from a.a.yzing dyna.ic models,these mPC stra.egies a.e investiga.ed in terms of opera.ing principles a.d technica. *** pa.er further investiga.es implementa.ion of mPC stra.egies in unba.a.ced *** on the qua.tita.ive a.d qua.ita.ive a.a.ysis of severa. ca.e studies,performa.ce of va.ious mPC schemes is compa.ed a.d their specia. fea.ures a.e *** for designing mPC stra.egies of DFIGs in WECS a.e provided.

关键词： Doubly fed induction genera.or(DFIG) model predictive control(mPC) wind energy

Inhibition of protein degra.a.ion increa.es the Bt protein concentra.ion in Bt cotton

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Journa. of Integra.ive a.riculture 2024年第6期23卷 1897-1909页

作者： Yuting Liu Ha.jia.Li Yua. chen Ta.bel Leila.I.m Zhenyu Liu Shujua. Wu Siqi Sun Xia.g Zha.g Dehua.chen Jia.gsu Key La.ora.ory of Crop Genetics a.d Physiology/Co-Innova.ion Center for modern Production Technology of Gra.n Crops Yangzhou UniversityYangzhou 225009China a.ricultura. Resea.ch Coopera.ion Biotechnology and Biosafety Research CenterKhartoum 13314Sudan

Ba.illus thuringiensis(Bt)cotton production is cha.lenged by two ma.n problems,i.e.,the low concentra.ion of Bt protein a. the boll setting sta.e a.d the lowest insect resista.ce in bolls a.ong a.l the cotton pla.t’s ***,increa.ing the Bt protein concentra.ion a. the boll sta.e,especia.ly in bolls,ha. become the ma.n goa. for increa.ing insect resista.ce in *** this study,two protein degra.a.ion inhibitors(ethylene dia.ine tetra.a.etic a.id(EDTa.a.d leupeptin)were spra.ed on the bolls,subtending lea.es,a.d whole cotton pla.ts a. the pea. flowering sta.e of two Bt cultiva.s(medium ma.ura.ion Sika.g 1(SK1))a.d ea.ly ma.ura.ion Zhongmia. 425(Zm425)in 2019 a.d *** Bt protein content a.d protein degra.a.ion meta.olism were *** results showed tha. the Bt protein concentra.ions were enha.ced by 21.3 to 38.8%a.d 25.0 to 38.6%in the trea.ed bolls of SK1 a.d Zm425 respectively,while they were decrea.ed in the subtending lea.es of these trea.ed *** the trea.ed lea.es,the Bt protein concentra.ions increa.ed by 7.6 to 23.5%a.d 11.2 to 14.9%in SK1 a.d Zm425,*** combined a.plica.ion of EDTa.a.d leupeptin to the whole cotton pla.t increa.ed the Bt protein concentra.ions in both bolls a.d subtending *** Bt protein concentra.ions in bolls were higher,increa.ing by 22.5 to 31.0%a.d 19.6 to 32.5%for SK1 a.d Zm425,*** orga.s trea.ed with EDTa.or/a.d leupeptin showed reduced free a.ino a.id contents,protea.e a.d peptida.e a.tivities a.d significa.t enha.cements in soluble protein *** results indica.ed tha. inhibiting protein degra.a.ion could improve the protein content,thus increa.ing the Bt protein concentra.ions in the bolls or/a.d lea.es of cotton ***,the increa.e in the Bt protein concentra.ion without yield reduction suggested tha. these two protein degra.a.ion inhibitors ma. be a.plica.le for improving insect resista.ce in cotton production.

关键词： Bt cotton Bt protein inhibition of protein degra.a.ion protein degra.a.ion meta.olism

a. Upper Bound for the Tra.sversa. Number of Connected k-Uniform Hypergra.hs

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Journa. of the Opera.ions Resea.ch Society of China 2024年第3期12卷 829-835页

作者： Zi-a. chen Bin chen Center for Discrete ma.hema.ics Fuzhou UniversityFuzhou350108FujianChina

Let H be a.hypergra.h with vertex set V(H)a.d hyperedge set E(H).We ca.l a.vertex set R ■V(H)a.tra.sversa. if it ha. a.nonempty intersection with every hyperedge of *** tra.sversa. number,denoted by τ(H),is the minimum ca.dina.ity of *** 2021,Dia. verified tha. the upper bound of tra.sversa. number for a.y connected 3-uniform hypergra.h H is a. most 2m+1/3,tha. is,τ(H)≤2m+1/3, where m is the size of ***,they ga.e the necessa.y a.d sufficient conditions to rea.hthe upper bound,na.ely τ(H)≤2m+1/3,if a.d only if H is a.hypertreewitha.3 perfect *** this pa.er,we investiga.e the tra.sversa. number of connected kunifom hypergra.hs for k≥*** confrm tha. τ(H)≤(k-1)m+1/k for a.y k-unifom hypegra.hH with size ***,we show tha. τ(H)≤(k-1)m+1/k if a.d only if H is a.hypertree with a.perfect ma.ching,which genera.izes the results of Dia..

关键词： Tra.sversa. number k-uniform hypergra.h Perfect ma.ching

Thin pa.nts for dura.le a.d sca.a.le ra.ia.ive cooling

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Journa. of Energy Chemistry 2024年第3期90卷 176-182,I0006页

作者： Sha.qua. Liu Fei Zha.g Xingyu chen Hongjie Ya. Wei chen meijie chen School of Energy Science a.d Engineering Central South UniversityChangsha 410083HunanChina School of Intelligent ma.ufa.turing Ecosystem Xi'an Jiaotong-Liverpool UniversitySuzhou 215400JiangsuChina

Pa.sive da.time ra.ia.ive cooling(PDRC) is environment-friendly without energy input by enha.cing the coa.ing's sola. reflecta.ce(R_(sola.)) a.d therma. emitta.ce(ε_(LWIR)) in the a.mosphere's long-wa.e infra.ed tra.smission ***,high R_(sola.) is usua.ly a.hieved by increa.ing the coa.ing's thickness,which not only increa.es ma.eria.s' cost but a.so impa.rs hea. ***,the desired high R_(sola.) is vulnera.le to dust pollution in the *** this work,a.thin pa.nt wa. designed by mixing hBN pla.es,PFOTS,a.d IPa. R_(sola.)=0.963 a.d ε_(LWIR)=0.927 wa. a.hieved a. a.thickness of 150 μm due to the high ba.ksca.tering a.ility of sca.ters.a.high through-pla.e therma. conductivity(~1.82 W m^(-1) K^(-1)) a.so ca. be *** a.dition,the porous structure coupled with the binder PFOTS resulted in a.conta.t a.gle of 154°,demonstra.ing excellent dura.ility under dust *** experiments showed tha. the thin pa.nt ca. obta.n a.2.3℃ lower tempera.ure for sub-a.bient cooling tha. the reference PDRC coa.ing in the ***,the a.ove-a.bient hea. dissipa.ion performa.ce ca. be enha.ced by spra.ing the thin pa.nt on a.3D hea. sink,which wa. 15.7℃ lower tha. the reference 1D structure,demonstra.ing excellent performa.ce for dura.le a.d sca.a.le PDRC a.plica.ions.

关键词： Ra.ia.ive cooling Hea. dissipa.ion Sola. reflecta.ce Therma. emitta.ce Conta.t a.gle

Photodegra.a.ion of xylene isomers:Kinetics,mecha.ism,seconda.y polluta.t forma.ion potentia. a.d hea.th risk eva.ua.ion

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Journa. of Environmenta. Sciences 2024年第2期136卷 658-669页

作者： Xia.ya. chen Weikun Zhu Sufen Feng Jia.gya. chen Gua.gdong Key La.ora.ory of Environmenta. Ca.a.ysis a.d Hea.th Risk Control Guangdong Technology Research Center for Photocatalytic Technology Integration and Equipment EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Gua.gzhou Key La.ora.ory of Environmenta. Ca.a.ysis a.d Pollution Control Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and HealthSchool of Environmental Science and EngineeringGuangdong University of TechnologyGuangzhou 510006China

Photodegra.a.ion technology ha. been widely a.plied in the purifica.ion of industria. a.oma.ic ***,whether this technology efficiently removes the polluta.ts to prevent seconda.y pollution a.d hea.th risk is still ***,the photodegra.a.ion processes of three xylenes were compa.ed under designed rea.tion a.mospheres a.d light *** la.p showed poor photodegra.a.ion a.ility towa.d xylenes,no ma.ter in N_(2) or N_(2)+O_(2)system,while much higher photodegra.a.ion performa.ce of xylenes were obta.ned under ultra.iolet(UV)a.d va.uum ultra.iolet(VUV)irra.ia.ion,especia.ly in N_(2)+O_(2)+VUV system,where 97.9%of m-xylene,99.0%of o-xylene or 87.5%of p-xylene with the initia. concentra.ion of 860 mg/m^(3) wa. removed within 240 *** xylenes underwent three processes of photo-isomeriza.ion,photodecomposition a.d photo-oxida.ion to produce intermedia.es of a.oma.ics,a.ka.es a.d *** them,the photo-isomeriza.ion products showed the highest concentra.ion percenta.e(e.g.,≥50%in o-xylene system),confirming tha. photo-isomeriza.ion rea.tion wa. the domina.ed photodegra.a.ion process of ***,these isomerized products not only contributed a.out 97%a.d91%to the forma.ion potentia. of O3(OFP)a.d seconda.y orga.ic a.rosols(SOa.P),but a.so displa.ed obvious non-ca.cinogenic risk,a.though one of photodecomposition product—benzene showed the highest occupa.iona. exposure ***,the seconda.y pollution a.d hea.th risks of photodegra.a.ion products of xylenes were non-ignora.le,a.though the OFP,SOa.P a.d hea.th risks of the genera.ed products reduced a. lea.t 4.5 times in compa.ison with tha. of the degra.ed *** findings a.e helpful for the a.propria.e a.plica.ion of this technology in the purifica.ion of industria. orga.ic wa.te ga..

关键词： Isomer a.oma.ics Photodegra.a.ion Ozone forma.ion Seconda.y orga.ic a.rosols Hea.th risk

Fe-N_(x) sites coupled with core-shell FeS@C na.opa.ticles to boost the oxygen ca.a.ysis for recha.gea.le Zn-a.r ba.teries

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Journa. of Energy Chemistry 2024年第3期90卷 565-577,I0013页

作者： Ka.a. Sriniva. Zhuo chen a.ra. chen Fei ma.ming-qia.g Zhu Yua.fu chen School of Integra.ed Circuit Science a.d Engineering and State Key Laboratory of Electronic Thin Films and Integrated DevicesUniversity of Electronic Science and Technology of ChinaChengdu 610054SichuanChina College of mecha.ica. a.d Electronic Engineering Northwest A&F UniversityYangling 712100ShaanxiChina School of ma.eria.s a.d Energy Yunnan UniversityKunming 650091YunnanChina

The development of efficient single-a.om ca.a.ysts(Sa.s) for the oxygen reduction rea.tion(ORR)rema.ns a.formida.le cha.lenge,prima.ily due to the symmetric cha.ge distribution of meta. singlea.om sites(m-N_(4)).To a.dress such issue,herein,Fe-N_(x) sites coupled synergistic ca.a.ysts fa.rica.ion stra.egy is presented to brea. the uniform electronic distribution,thus enha.cing the intrinsic ca.a.ytic ***,a.omica.ly dispersed Fe-N_(x) sites supported on N/S-doped mesoporous ca.bon(NSC)coupled with FeS@C core-shell na.opa.ticles(Fa.-NSC@950) is synthesized by a.fa.ile hydrotherma. rea.tion a.d subsequent *** to the presence of a. in situ-grown conductive gra.hitic la.er(shell),the FeS na.opa.ticles(core) effectively a.just the electronic structure of single-a.om Fe sites a.d fa.ilita.e the ORR kinetics via.short/long-ra.ge coupling ***,Fa.-NSC@950displa.s a.more positive ha.f-wa.e potentia.(E_(1/2)) of 0.871 V with a.significa.tly boosted ORR kinetics(Ta.el slope=52.2 mV dec^(-1)),outpa.ing the commercia. Pt/C(E_(1/2)=0.84 V a.d Ta.el slope=54.6 mV dec^(-1)).a. a.bifunctiona. electroca.a.yst,it displa.s a.sma.ler bifunctiona. a.tivity pa.a.eter(ΔE) of 0.673 V,surpa.sing the Pt/C-RuO_(2) combina.ion(ΔE=0.724 V).Besides,the Fa.-NSC@950-ba.ed zinca.r ba.tery(Za.) displa.s superior power density,specific ca.a.ity,a.d long-term cycling performa.ce to the Pt/C-Ir/C-ba.ed *** work significa.tly contributes to the field by offering a.promising stra.egy to enha.ce the ca.a.ytic a.tivity of Sa.s for ORR,with potentia. implica.ions for energy conversion a.d stora.e technologies.

关键词： Fe-N_(x)sites Core-shell FeS@C Synergistic intera.tions Oxygen reduction rea.tion Zn-a.r ba.tery