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Comparat.ve analyses of mit.genomes in t.e social bees wit. insight. int. evolut.on of long invert.d repeat. in t.e Meliponini

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Zoological Research 2024年第1期45卷 160-175页

作者： Yu-Ran Li zheng-Wei Wang Richard t.Corlet. Wen-Bin Yu Yunnan Key Laborat.ry for t.e Conservat.on of t.opical Rainforest. and Asian Elephant.&Cent.r for Int.grat.ve Conservat.on Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan 666303China CAS Key Laborat.ry of t.opical Forest.Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesMenglaYunnan 666303China Sout.east.Asia Biodiversit. Research Inst.t.t. Chinese Academy of SciencesMenglaYunnan 666303China Universit. of Chinese Academy of Sciences Shijingshan DistrictBeijing 100049China

t.e insect.mit.genome is t.pically a compact.circular molecule wit. highly conserved gene ***,mit.genome st.uct.ral variat.ons have been report.d in specific t.xa,and gene rearrangement.,usually t.e t.NAs,occur in different.*** synapomorphies of mit.genome organizat.ons can provide informat.on for phylogenet.c inferences,comparat.ve analyses of mit.genomes have been given increasing ***,most.st.dies use a very few species t. represent.t.e whole genus,t.ibe,family,or even order,overlooking pot.nt.al variat.ons at.lower t.xonomic levels,which might.lead t. some incorrect.*** provide new insight. int. mit.genome organizat.ons and t.eir implicat.ons for phylogenet.c inference,t.is st.dy conduct.d comparat.ve analyses for mit.genomes of t.ree social bee t.ibes(Meliponini,Bombini,and Apini)based on t.e phylogenet.c framework wit. denser t.xonomic sampling at.t.e species and populat.on *** analyses revealed t.at.mit.genomes of Apini and Bombini are t.e t.pical t.pe,while t.ose of Meliponini show diverse variat.ons in mit.genome sizes and *** invert.d repeat.(IRs)cause significant.gene rearrangement. of prot.in coding genes(PCGs)and rRNAs in Indo-Malay/Aust.alian st.ngless bee *** evolut.on analyses showed t.at.t.e lineage wit. IRs have lower dN/dS rat.os for PCGs t.an lineages wit.out.IRs,indicat.ng pot.nt.al effect. of IRs on t.e evolut.on of mit.chondrial *** finding of IRs and different.pat.erns of gene rearrangement. suggest.d t.at.Meliponini is a hot.pot.in mit.genome *** conserved PCGs and rRNAs whose rearrangement. were found only in t.e ment.oned lineages wit.in Meliponini,t.NA rearrangement. are common across all t.ree t.ibes of social bees,and are significant.even at.t.e species level,indicat.ng t.at.comprehensive sampling is needed t. fully underst.nd t.e pat.erns of t.NA rearrangement.,and t.eir implicat.ons for phylogenet.c inference.

关键词： Social bees Phylogeny Mit.genome st.uct.re Gene rearrangement Invert.d repeat.

Imaging and endoscopic t.ols in pediat.ic inflammat.ry bowel disease: What.s new?

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World Journal of Clinical Pediat.ics 2024年第1期13卷 7-13页

作者： Alexandra S Hudson Ghassan t.Wahbeh Hengqi Bet.y zheng Depart.ent.of Pediat.ics University of WashingtonSeattleWA 98109United States

Pediat.ic inflammat.ry bowel disease(IBD)is a chronic inflammat.ry disorder,wit. increasing incidence and prevalence *** have been recent.advances in imaging and endoscopic t.chnology for disease diagnosis,t.eat.ent.and *** ult.asound,including t.ansabdominal,t.ansperineal,and endoscopic,has been emerging for t.e assessment.of t.ansmural bowel inflammat.on and disease complicat.ons(e.g.,fist.la,abscess).Aside from surgery,IBD-relat.d int.st.nal st.ict.res now have endoscopic t.eat.ent.opt.ons including t.rough-t.e-scope balloon dilat.t.on,inject.on,and needle knife st.ict.rot.my and new evaluat.on t.ols such as endoscopic funct.onal lumen imaging *** t.ansnasal endoscopy may have a role in pat.ent. wit. upper gast.oint.st.nal Crohn’s disease or t.ose wit. IBD wit. new upper gast.oint.st.nal *** t. dysplasia screening in pediat.ic pat.ent. wit. longst.nding colonic disease or primary sclerosing cholangit.s hold promise wit. t.e addit.on of virt.al chromoendoscopy and ongoing research in t.e field of art.ficial int.lligence-assist.d endoscopic *** int.lligence and machine learning is a rapidly evolving field,wit. goals of furt.er personalizing IBD diagnosis and t.eat.ent.select.on as well as *** review summarized t.ese advancement.,focusing on pediat.ic pat.ent. wit. IBD.

关键词： Int.st.nal ult.asound Endoscopy Inflammat.ry bowel disease Pediat.ics Imaging

Opt.mal impulsive rendezvous for highly ellipt.cal orbit. using linear primer vect.r t.eory

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Chinese Journal of Aeronaut.cs 2024年第3期37卷 194-207页

作者： Maozhang zheng Jianjun LUO Zhaohui DANG Nat.onal Key Laborat.ry of Aerospace Flight.Dynamics Northwestern Polytechnical UniversityXi’an 710072China

In t.is paper,minimum-fuel rendezvous is invest.gat.d for t.e case in which t.e reference orbit.is highly *** t.is end,t.e well-known t.chauner-Hempel equat.ons are used t. describe t.e relat.ve mot.ons bet.een rendezvous spacecraft.and t.e ***’s primer vect.r t.eory is t.en applied on t.is linear but.t.me-varying *** analyt.cal solut.on of t.e required primer vect.r for t.is problem is t.en derived by using a recent.y developed *** t.e exist.ng non-opt.mal solut.ons which don’t.sat.sfy t.e condit.ons,t.e met.ods are furt.er designed t. improve t.e performance by shift.ng impulses or adding a new ***,t.o algorit.ms are developed for free-impulse t.me-fixed rendezvous *** first.algorit.m can det.rmine t.e globally opt.mal t.aject.ry wit. t.e opt.mal number of *** second one enables for fast.t.aject.ry *** proposed algorit.ms have been successfully applied t. coplanar and t.ree-dimensional rendezvous problems in which t.e t.rget.is flying on highly ellipt.cal orbit..

关键词： Orbit.l t.ansfer Opt.mal t.aject.ry Primer vect.r t.chauner-Hempel equat.ons Globally planning Fast.planning

A Graded Speed Cont.ol Met.od for Cyborg Rat. Based on Elect.ical St.mulat.on of t.e Cuneiform Nucleus

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Journal of Bionic Engineering 2024年第3期21卷 1334-1346页

作者： Hanyi Ling Le Han Nenggan zheng Qiushi Academy for Advanced St.dies(QAAS) Zhejiang UniversityHangzhou310007China t.e St.t. Key Lab of Brain-Machine Int.lligence Zhejiang UniversityHangzhou310007China College of Biomedical Engineering&Inst.ument.Science Zhejiang UniversityHangzhou310007China College of Comput.r Science and t.chnology Zhejiang UniversityHangzhou310007China CCAI by MOE and Zhejiang Provincial Government.ZJU) Hangzhou310007China

t.e precise movement.speed regulat.on is a key fact.r t. improve t.e cont.ol effect.and efficiency of t.e cyborg ***,t.e current.st.mulat.on t.chniques cannot.realize t.e graded cont.ol of t.e *** t.is st.dy,we achieved t.e mult.-level speed regulat.on of cyborg rat. in t.e large open field and t.eadmill by specifically t.rget.ng t.e Cuneiform Nucleus(CnF)of t.e Mesencephalic Locomot.r Region(MLR).Det.iled,we measured t.e influence of each st.mulat.on paramet.r on t.e speed cont.ol process which included t.e real-t.me speed,accelerat.d speed,response t.me,and accelerat.on *** concluded t.at.t.e pulse period and t.e pulse widt. were t.e main det.rminant. influencing t.e accelerat.d speed of cyborg *** t.e amplit.de of st.mulat.on was found t. affect.t.e response t.me exhibit.d by t.e cyborg *** st.dy provides valuable insight. int. t.e regulat.on of rat.locomot.on speed and highlight. t.e pot.nt.al for ut.lizing t.is approach in various experiment.l set.ings.

关键词： Cyborg rat. Cuneiform nucleus Graded cont.ol Speed regulat.on

Diffract.ve neural net.orks wit. improved expressive power for gray-scale image classificat.on

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Phot.nics Research 2024年第6期12卷 1159-1166页

作者： MINJIA zheng WENZHE LIU LEI SHI JIAN ZI St.t. Key Laborat.ry of Surface Physics Key Laboratory of Micro-and Nano-Photonic Structures(Ministry of Education)and Department of PhysicsFudan UniversityShanghai 200433China Inst.t.t. for Nanoelect.onic Devices and Quant.m Comput.ng Fudan UniversityShanghai 200433China Collaborat.ve Innovat.on Cent.r of Advanced Microst.uct.res Nanjing UniversityNanjing 210093China Shanghai Research Cent.r for Quant.m Sciences Shanghai 210315China

In order t. harness diffract.ve neural net.orks(DNNs)for t.sks t.at.bet.er align wit. real-world comput.r vision requirement.,t.e incorporat.on of gray scale is ***,DNNs are not.powerful enough t. accomplish gray-scale image processing t.sks due t. limit.t.ons in t.eir expressive *** our work,we elucidat. t.e relat.onship bet.een t.e improvement.in t.e expressive power of DNNs and t.e increase in t.e number of phase modulat.on layers,as well as t.e opt.mizat.on of t.e Fresnel number,which can describe t.e diffract.on *** demonst.at. t.is point.we numerically t.ained a double-layer DNN,addressing t.e prerequisit.s for int.nsit.based gray-scale image ***,we experiment.lly const.uct.d t.is double-layer DNN based on digit.l micromirror devices and spat.al light.modulat.rs,achieving eight.level int.nsit.-based gray-scale image classificat.on for t.e MNISt.and Fashion-MNISt.dat. *** opt.cal syst.m achieved t.e maximum accuracies of 95.10%and 80.61%,respect.vely.

关键词： process mirror limit.t.ons

UAV swarm air combat.maneuver decision-making met.od based on mult.-agent.reinforcement.learning and t.ansferring

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Science China(Informat.on Sciences) 2024年第8期67卷 49-66页

作者： Zhiqiang zheng Chen WEI Haibin DUAN St.t. Key Laborat.ry of Virt.al Realit. t.chnology and Syst.ms School of Automation Science and Electrical Engineering Beihang University

During short.range air combat.involving unmanned aircraft.vehicle(UAV) swarms, UAVs must.make accurat. maneuver decisions based on informat.on from bot. enemy and friendly UAVs. t.is dual requirement.of compet.t.on and cooperat.on present. a significant.challenge in t.e field of unmanned air combat. In t.is paper, a met.od based on mult.-agent.reinforcement.learning(MARL) is proposed t. address t.is issue. An act.r net.ork cont.ining t.ree subnet.orks t.at.can handle different.t.pes of sit.at.onal informat.on is designed. Hence, t.e result. from simpler one-on-one scenarios are leveraged t. enhance t.e complex swarm air combat.t.aining process. Separat. st.t. spaces for local and global informat.on are designed for t.e act.r and crit.c net.orks. A det.iled reward funct.on is proposed t. encourage *** prevent.lazy part.cipant. in air combat. a reward assignment.operat.on is applied t. dist.ibut. t.ese dense rewards. Simulat.on t.st.ng and ablat.on experiment. demonst.at. t.at.bot. t.e t.ansfer operat.on and reward assignment.operat.on can effect.vely deal wit. t.e swarm air combat.scenario, and reflect.t.e effect.veness of t.e proposed met.od.

关键词： UAV swarm short.range air combat mult.-agent.reinforcement.learning reward assignment t.ansfer

Effect. of orient.t.on on t.e fat.gue crack growt. behaviors of t.e ZK60 magnesium alloy in air and PBS

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Journal of Magnesium and Alloys 2024年第1期12卷 281-294页

作者： Jiaqi Hu zheng Liu Zuoliang Ning Hong Gao School of Chemical Engineering and t.chnology Tianjin UniversityTianjin 300072China t.anjin Key Laborat.ry of Chemical Process Safet. and Equipment.t.chnology Tianjin 300072China

St.ong anisot.opic corrosion and mechanical propert.es caused by specimen orient.t.ons great.y limit.t.e applicat.ons of wrought.magnesium *** invest.gat. t.e influences of specimen orient.t.on,t.e corrosion t.st. and(corrosion)fat.gue crack growt. t.st. were *** rolled and t.ansverse surfaces of t.e mat.rials show dist.nct.corrosion rat. differences in t.e st.ble corrosion st.ge,but.t.e t.ut. is t.e opposit. for t.e init.al st.ge of *** air,specimen orient.t.ons have a significant.influence on t.e plast.c deformat.on mechanisms near t.e crack t.p,which result. in different.fat.gue fract.re surfaces and cracking *** wit. R-t.specimens,N-t.specimens show a slower fat.gue crack growt.(FCG)rat. in air,which can be at.ribut.d t. crack closure effect. and deformat.on t.inning near t.e crack *** corrosion environment.will not.significant.y change t.e main plast.c deformat.on mechanisms for t.e same t.pe of ***,t.e FCG rat. in phosphat. buffer saline(PBS)is one order of magnit.de higher t.an t.at.in air,which is caused by t.e combined effect. of hydrogen-induced cracking and anodic *** t. t.e similar corrosion rat.s at.crack t.ps,t.e specimens wit. different.orient.t.ons display close FCG rat.s in PBS.

关键词： Magnesium alloy Orient.t.on Corrosion Fat.gue crack growt.

Opt.cal det.ct.on met.od of discharge mode t.ansit.on of induct.vely coupled plasma in an at.osphere-breat.ing elect.ic propulsion syst.m

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Chinese Journal of Aeronaut.cs 2024年第10期37卷 172-183页

作者： Yuxuan ZHONG Yu ZHANG Jianjun WU Peng zheng College of Aerospace Science and Engineering National University of Defense TechnologyChangsha 410073China

Plasma discharge st.bilit. is an import.nt.problem in at.osphere-breat.ing elect.ic propulsion syst.m when maint.ining long-t.rm missions at.ult.a-low eart. *** paper designed an induct.vely coupled plasma source t. imit.t. t.e ionizat.on *** effect.of inflow rat. and Radio Frequency(RF)power on t.e plasma discharge mode t.ansit.on is experiment.lly st.died.A discharge mode det.ct.on met.od is proposed,which det.rmines t.e discharge mode by ident.fying t.e morphology of t.e plasma *** using t.e met.od,t.e discharge mode t.ansit.on is quant.fied and a cont.ol model based on t.e paramet.r sensit.vit. is *** verify t.e met.od,t.e spect.a are measured and t.e elect.on t.mperat.re spat.al dist.ibut.on is *** t.e met.od has been proven *** result. show t.at.t.e induct.vely coupled discharge cont.ins capacit.ve component. affect.d by t.e mass flow rat. and t.e radio frequency *** plasma charact.rist.cs can be maint.ined st.bly by cont.olling t.e radio frequency power when t.e mass flow rat. randomly changes in a cert.in *** is demonst.at.d t.at.t.e applicat.on of det.ct.on met.od effect.vely ident.fies t.e discharge mode,which is a promising act.ve cont.ol met.od for t.e plasma discharge mode.

关键词： At.osphere-breat.ing elect.ic propulsion Induct.vely coupled plasma Discharge mode t.ansit.on Opt.cal diagnosis Ult.a-low eart. orbit

Semiconduct.r fibers for t.xt.le int.grat.d elect.onic syst.ms

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Nat.onal Science Review 2024年第6期11卷 100-101页

作者： Yuanyuan zheng Zhen Wang Peining Chen Huisheng Peng St.t. Key Laborat.ry of Molecular Engineering of Polymers Department of Macromolecular ScienceInstitute of Fiber Materials and Devices and Laboratory of Advanced Materials Fudan University

Over 5000 years of development. t.e funct.ons of clot.ing have been mainly limit.d in warmt. and modest.. Wit. t.e development.of smart.fibers, fabrics are ant.cipat.d t. revolut.onize mult.disciplinary applicat.ons, ... 详细信息

关键词： Fibers