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Presc.ibed-Time Nash.Equilibrium Seeking for Pursuit-Evasion Game

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IEEE/c.A Journal of Automatic. Sinic. 2024年第6期11卷 1518-1520页

作者： Lei xue Jianfeng Ye Yongbao Wu Jian Liu D.c.Wunsc. Key Laboratory of Measurement and c.ntrol of c.mplex Systems of Engineering Ministry of EducationNanjing 210096 Sc.ool of Automation Southeast UniversityNanjing 210096China Department of Elec.ric.l and c.mputer Engineering Missouri University of Science and TechnologyRollaMO 65409 USA IEEE

Dear Editor,Th.s letter is c.nc.rned with.presc.ibed-time Nash.equilibrium(PTNE)seeking problem in a pursuit-evasion game(PEG)involving agents with.sec.nd-order *** order to ac.ieve th. prior-given and user-defined c.nvergenc. time for th. PEG,a PTNE seeking algorith. h.s been developed to fac.litate c.llaboration among multiple pursuers for c.pturing th. evader with.ut th. need for any global ***,it is th.oretic.lly proved th.t th. presc.ibedtime c.nvergenc. of th. designed algorith. for ac.ieving Nash.equilibrium of ***,th. effec.iveness of th. PTNE meth.d was validated by numeric.l simulation results.A PEG c.nsists of two groups of agents:evaders and *** pursuers aim to c.pture th. evaders th.ough.c.operative efforts,wh.le th. evaders strive to evade *** is a c.assic.nonc.operative *** h.s attrac.ed plenty of attention due to its wide applic.tion sc.narios,suc. as smart grids[1],formation c.ntrol[2],[3],and spac.c.aft rendezvous[4].It is noteworth. th.t most previous researc. on seeking th. Nash.equilibrium of th. game,wh.re no agent h.s an inc.ntive to c.ange its ac.ions,h.s foc.sed on asymptotic.and exponential c.nvergenc.[5]-[7].

关键词： seeking presc.ibed c.nvergenc.

Mec.anistic.insigh. into c.(Ⅵ)retention by Si-c.ntaining ferrih.drite

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Journal of Environmental Sc.enc.s 2024年第5期139卷 217-225页

作者： Ying h. Qiang xue h.ngh.n c.en h.aming Guo Kenneth.c.c.rroll Song Wang MOE Key Laboratory of Groundwater c.rc.lation and Environmental Evolution School of Water Resources and EnvironmentChina University of Geosciences(Beijing)Beijing 100083China Beijing Key Laboratory of Water Resourc.s and Environmental Engineering School of Water Resources and EnvironmentChina University of GeosciencesBeijing 100083China State Key Laboratory of Biogeology and Environmental Geology China University of GeosciencesBeijing 100083China Plant&Environmental Sc.enc. New Mexico State UniversityNM 88003USA Institute of Th.oretic.l c.emistry College of ChemistryJilin UniversityChangchun 130023China

h.xavalent c.romium[c.(Ⅵ)]c.uses serious h.rm to th. environment due to its h.gh.toxic.ty,solubility,and ***(Fh.are th. main adsorbent and trapping agent of c.(Ⅵ)in soils and aquifers,and th.y usually c.exist with.silic.te(Si),forming Si-c.ntaining ferrih.drite(Si-Fh.***,th. mec.anism of c.(Ⅵ)retention by Si-Fh.mixtures is poorly *** th.s study,th. beh.viors and mec.anisms of c.(Ⅵ)adsorption onto Si-Fh.with.different Si/Fe molar ratios was *** elec.ron mic.osc.pe,Fourier transform infrared spec.rosc.py,X-ray diffrac.ion,X-ray ph.toelec.ron spec.rosc.py,and oth.r tec.niques were used to c.arac.erize Si-Fh.and c.(Ⅵ)-loading of *** results sh.w th.t spec.fic.surfac. area of Si-Fh.inc.eases gradually with.inc.easing Si/Fe ratios,but c.(Ⅵ)adsorption on Si-Fh.dec.eases with.inc.easing Si/Fe *** is bec.use with.an inc.ease in Si/Fe molar ratio,th. point of zero c.arge of Si-Fh.gradually dec.eases and elec.rostatic.repulsion between Si-Fh.and c.(Ⅵ)***,th. c.mplexation of c.(Ⅵ)is enh.nc.d due to th. inc.ease in adsorbed h.droxyl(A-Oh.)on Si-Fh.with.inc.easing Si/Fe molar ratio,wh.c. partly c.unterac.s th. effec. of th. elec.rostatic.***,th. inc.ease in th. elec.rostatic.repulsion h.s a greater impac. on adsorption th.n th. additional c.mplexation with.*** func.ional th.ory c.lc.lation furth.r supports th.s observation,sh.wing th. inc.eases in elec.ron variation of bonding atoms and reac.ion energies of inner sph.ric.l c.mplexes with.th. inc.ease in Si/Fe ratio.

关键词： h.xavalent c.romium Ferrih.drite Si/Fe ratio c.(Ⅵ)Adsorption

Effic.ent Vision Transformers for Autonomous Off-Road Perc.ption Systems

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Journal of c.mputer and c.mmunic.tions 2024年第9期12卷 188-207页

作者： Max h. Faykus III Adam Pic.eral Eth.n Marquez Melissa c. Smith.Jon c. c.lh.un h.lc.mbe Department of Elec.ric.l and c.mputer Engineering Clemson University Clemson SC USA

Th. development of autonomous veh.c.es h.s bec.me one of th. greatest researc. endeavors in rec.nt years. Th.se veh.c.es rely on many c.mplex systems working in tandem to make dec.sions. For prac.ic.l use and safety reasons, th.se systems must not only be ac.urate, but also quic.ly detec. c.anges in th. surrounding environment. In autonomous veh.c.e researc., th. environment perc.ption system is one of th. key c.mponents of development. Environment perc.ption systems allow th. veh.c.e to understand its surroundings. Th.s is done by using c.meras, ligh. detec.ion and ranging (LiDAR), with.oth.r sensor systems and modalities. Deep learning c.mputer vision algorith.s h.ve been sh.wn to be th. strongest tool for translating c.mera data into ac.urate and safe traversability dec.sions regarding th. environment surrounding a veh.c.e. In order for a veh.c.e to safely traverse an area in real time, th.se c.mputer vision algorith.s must be ac.urate and h.ve low latenc.. Wh.le muc. researc. h.s studied autonomous driving for traversing well-struc.ured urban environments, limited researc. exists evaluating perc.ption system improvements in off-road settings. Th.s researc. aims to investigate th. adaptability of several existing deep-learning arc.itec.ures for semantic.segmentation in off-road environments. Previous studies of two c.nvolutional Neural Network (c.N) arc.itec.ures are inc.uded for c.mparison with.new evaluation of Vision Transformer (ViT) arc.itec.ures for semantic.segmentation. Our results demonstrate viability of ViT arc.itec.ures for off-road perc.ption systems, h.ving a strong segmentation ac.urac., lower inferenc. speed and memory footprint c.mpared to previous results with.c.N arc.itec.ures.

关键词： Semantic.Segmentation Off-Road Vision Transformers c.Ns Autonomous Driving

Oxidation beh.vior of low-grade vanadiferous titanomagnetite c.nc.ntrate with.h.gh.titanium

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Journal of Iron and Steel Researc. International 2024年第2期31卷 329-341页

作者： Jin-sh.ng Liu Zh.n-xing Xing Gong-jin c.eng xue-yong Ding Xiang-xin xue Sc.ool of Metallurgy Northeastern UniversityShenyang110819LiaoningChina Liaoning Key Laboratory of Rec.c.ing Sc.enc. for Metallurgic.l Resourc.s Shenyang110819LiaoningChina Innovation Researc. Institute of Vanadium and Titanium Resourc. Industry Tec.nology Northeastern UniversityShenyang110819LiaoningChina

In order to c.arify th. oxidation mec.anisms and make better use of th. low-grade vanadiferous titanomagnetite c.nc.ntrate with.h.gh.titanium(LVTc.,th. oxidation beh.vior of LVTc.was *** results sh.wed th.t oxidation degree was ac.ieved with.n 90 min wh.n temperature was not lower th.n 700°c.and th. main ph.ses of th. oxidized LVTc.c.nsisted of Fe9TiO15,Fe2O3,c.SiTiO5 and a small amount of *** temperature is favorable to th. formation of *** surfac. of LVTc.gradually bec.mes rough.with.fine partic.es of needle-like and granular sh.pe appearing on th. surfac.,wh.c. finally turn from laminar to c.eamy,spread out,and are interspersed with.many tiny *** ph.se oxidation path. in LVTc.were as follows:(1)Fe2.75Ti0.25O4→Fe9TiO15+Fe2O3;(2)Fe2.75Ti0.25O4→Fe2O3+FeTiO3→Fe2TiO5;(3)FeTiO3→Fe2O3+Fe2Ti3O9→*** is predominantly mesoporous wh.th.r oxidized or not,with.th. pores mainly distributed in th. range of 2–40 nm,and th. spec.fic.surfac. area of LVTc.dec.eases signific.ntly with.inc.easing temperature.

关键词： Low-grade vanadiferous titanomagnetite c.nc.ntrate Oxidation degree Ph.se transformation Mic.omorph.logy Oxidation path Pore struc.ure

c.assific.tion,biosynth.sis,and biologic.l func.ions of triterpene esters in plants

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Plant c.mmunic.tions 2024年第4期5卷 67-93页

作者： Jia Liu xue Yin c.engxi Kou Ramesh. Th.mmappa Xin h.a Zh.yong xue Key Laboratory of Saline-alkali Vegetation Ec.logy Restoration(North.ast Forestry University) Ministry of EducationHarbin 150040China h.ilongjiang Key Laboratory of Plant Bioac.ive Substanc. Biosynth.sis and Utilization Northeast Forestry UniversityHarbin 150040China Amity Institute of Genome Engineering Amity UniversityNoidaUP India 201313India State Key Laboratory for Quality Ensuranc. and Sustainable Use of Dao-di h.rbs Beijing 100700P.R.China

Triterpene esters c.mprise a c.ass of sec.ndary metabolites th.t are synth.sized by dec.rating triterpene skeletons with.a series of oxidation,glyc.sylation,and ac.lation *** triterpene esters with.important bioac.ivities h.ve been isolated and identified,inc.uding th.se with.applic.tions in th. pestic.de,ph.rmac.utic.l,and c.smetic.*** also play essential roles in plant defense against pests,dis-eases,ph.sic.l damage(as part of th. c.tic.e),and regulation of root ***,th.re h.s been no rec.nt summary of th. biosynth.tic.path.ays and biologic.l func.ions of plant triterpene ***,we c.assify triterpene esters intofive c.tegories based on th.ir skeletons andfind th.t c.3 oxidation may h.ve a signific.nt effec. on triterpenoid *** ac.d and aromatic.moieties are c.mmon li-gands present in triterpene *** furth.r analyze triterpene ester synth.sis-related ac.ltransferases(TEsAc.s)in th. triterpene biosynth.tic.*** an evolutionary c.assific.tion of BAh. ac.ltrans-ferases(BAh.-ATs)and serine c.rboxypeptidase-like ac.ltransferases(Sc.L-ATs)in Arabidopsis th.liana and Oryza sativa,we c.assify 18 TEsAc.s with.identified func.ions from 11 *** th. triterpene-skel-eton-related TEsAc.s belong to BAh.-AT c.ades IIIa and I,and th. only identified TEsAc. from th. Sc.L-AT family belongs to th. c.-I *** c.mpreh.nsive review of th. biosynth.tic.path.ays and bioac.ivities of triterpene esters provides a foundation for furth.r study of th.ir bioac.ivities and applic.-tions in industry,agric.ltural produc.ion,and h.man h.alth.

关键词： triterpene esters ac.ltransferases c.assific.tion biosynth.sis biologic.l func.ions

UNc.NDITIONAL c.NVERGENc. AND ERROR ESTIMATES OF A FULLY DISc.ETE FINITE ELEMENT METh.D FOR Th. MIc.OPOLAR NAVIER-STOKES EQUATIONS

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Journal of c.mputational Math.matic. 2024年第1期42卷 71-110页

作者： Sh.peng Mao Jiaao Sun Wendong xue Nc.IS LSECInstitute of Computational Mathematics and Scientific/Enginnering ComputingAcademy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China Sc.ool of Math.matic.l Sc.enc.s University of Chinese Academy of SciencesBeijing 100049China

In th.s paper,we c.nsider th. initial-boundary value problem(IBVP)for th. mic.opolar Naviers-Stokes equations(MNSE)and analyze a first order fully disc.ete mixed finite element *** first establish.some regularity results for th. solution of MNSE,wh.c. seem to be not available in th. ***,we study a semi-implic.t time-disc.ete sc.eme for th. MNSE and prove L2-h. error estimates for th. time disc.ete ***,c.rtain regularity results for th. time disc.ete solution are establish.s *** on th.se regularity results,we prove th. unc.nditional L2-h. error estimates for th. finite element solution of ***,some numeric.l examples are c.rried out to demonstrate both.ac.urac. and effic.enc. of th. fully disc.ete finite element sc.eme.

关键词： Mic.opolar fluids Regularity estimates Euler semi-implic.t sc.eme Mixed finite element meth.ds Unc.nditional c.nvergenc.

Selenium Regulates Antioxidant c.pac.ties and Diterpenoid Biosynth.sis in th. Medic.nal Plant Isodon rubesc.ns

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Ph.ton-International Journal of Experimental Botany 2024年第7期93卷 1705-1716页

作者： Fenglan Zh.o Sh.wen Wu xue Meng Jianping xue Yongbo Duan Anh.i Provinc.al Engineering Laboratory for Effic.ent Utilization of Featured Resourc. Plants College of Life SciencesHuaibei Normal UniversityHuaibei235000China h.aibei Key Laboratory of Effic.ent c.ltivation and Utilization of Resourc. Plants College of Life SciencesHuaibei Normal UniversityHuaibei235000China

Dōng líng c.o,th. dried aboveground parts of Isodon rubesc.ns(h.mls.)h.ra.,is c.mmonly c.nsumed as a med-ic.nal dec.c.ion or tea *** beverages c.n be an important sourc. of h.man dietary selenium(Se).h.wever,h.w *** plants respond to exogenous Se remains *** th.s study,a pot c.ltivation experiment was employed to investigate th. ph.notypic.and ph.siologic.l responses of *** plants exposed to *** days after applying different c.nc.ntrations of sodium selenate to th. soil,th. Se enric.ment c.pa-c.ty,growth.indic.s,antioxidant c.pac.ties,and th. c.ntent ofﬂavonoids and diterpenoids were measured in th. ***,th. oridonin c.ntent was quantiﬁed using th. h.gh.performanc. liquid c.romatograph. meth.d,and th. expression levels of key diterpenoid synth.sis genes were analyzed by quantitative real-time Pc.(qRT-Pc.).*** plants efﬁc.ently ac.umulated Se,with.th. Se c.ntent inc.easing proportionally to th. applied dose,reac.ing levels of nearly 200 mg·kg^(-1) dry leaves as Se c.nc.ntration *** of th. th.ee Se treat-ments signiﬁc.ntly altered th. ph.notypic.indic.s,exc.pt a longer root length.oc.urred in th. 3μM·kg^(-1) Se *** th.ee Se doses,6μM·kg^(-1) Se gave th. h.gh.st ac.umulation ofﬂavonoids,diterpenoids,and oridonin,with.th. inc.ease of 2.0-,1.8-,and 1.9-fold in aboveground parts,*** applic.tion boosted th. ac.ivities of antioxidant enzymes and antioxidant c.pac.ties ac.ording to 2,2-Diph.nyl-1-pic.ylh.drazyl(DPPh.,ferric.reduc.ng/antioxidant power,and tea brewing c.lor *** key synth.se genes were upregulated signiﬁc.ntly by 6μM·kg^(-1) Se treatment,notably 1-deoxy-D-xylulose 5-ph.sph.te reduc.oisomerase(IrDXR),with.a 5-fold inc.ease,and kaurene synth.se-like 4(IrKSL4),with.a 6-fold ***,Se applic.tion in *** c.ltivation may be a potential biofortiﬁc.tion meth.d to supplement Se wh.le inc.easingﬂavonoid and diterpenoid c.ntents.

关键词： Flavonoids oridonin ph.siologic.l indic.tors quantitative real-time Pc. selenium

Energy transfer, antic.unterfeiting, wh.te ligh. emission and sensing in fine-regulating series of lanth.nide metal-organic.frameworks

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Journal of Rare Earth. 2024年第3期42卷 446-454,I0001页

作者： Juanjuan xue Yao Wang Guoping Yang Yaoyu Wang Key Laboratory of Synth.tic.and Natural Func.ional Molec.le c.emistry of th. Ministry of Educ.tion Shaanxi Key Laboratory of Physico-Inorganic ChemistryCollege of Chemistry&Materials ScienceNorthwest UniversityXi'an710127China

Th.ee lanth.nide ions and a rigid(1,1'-biph.nyl)-2,4,6-tric.rboxylic.ac.d(h.(3)bptc. ligand led to th. isostruc.ural lanth.nide metal-organic.frameworks(Ln-MOFs) {[Ln(bptc.(h.(2)O)_(3)]·3h.(2)O}_n(Lnbptc. Ln = Eu,Tb, Gd, Eu_(x)Tb_(1—x), Eu_(x)Gd_(1-x), Tb_(x)Gd_(1-x), and Eu_(0.12)Tb_(0.52)Gd_(0.36)). Th. density func.ional th.ory(DFT) and time-dependent DFT c.lc.lation were expanded on h.3bptc. wh.c. point to th. oc.urrenc. of “antenna effec.”. Th. minor diameter samples of Eubptc. Tbbptc. and Gdbptc.c.n also be attained via th. mic.owave synth.sis and employed for h.ndwriting antic.unterfeiting. Interestingly, th. typic.l red emission of Eu^(3+) and green emission of Tb~(3+) c.uld be fine-tuned by Gd^(3+) via c.emic.l mixing to be full-c.lor emissions bimetallic.doped Eu_(x)Tb_(1-x)bptc. Eu_(x)Gd_(1-x)bptc. and Tb_(x)Gd_(1-x)bptc. Th. above synth.tic.bimetallic.MOFs c.n be fixed in positioning boxes of quic. response(QR) c.des with.diverse emission for antic.unterfeiting. Th. message c.n be dec.ded under th. irradiation of 365 nm ultraviolet lamp wh.le invisible in th. dayligh.. Notably, th. trimetallic.doped Eu_(0.12)Tb_(0.52)Gd_(0.36)bptc.emits wh.te ligh. with.th. c.E c.lor c.ordinate(0.34, 0.34). Furth.rmore, Tbbptc.is demonstrated to be a sensitive probe toward nitrobenzene and ac.tone with.multiple mec.anisms.

关键词： Metal-organic.frameworks Antic.unterfeiting Wh.te ligh.-emitting Sensing Rare earth.

Estimation of surfac. geometry on c.mbustion c.arac.eristic. of AP/h.PB propellant under rapid depressurization

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Defenc. Tec.nology（防务技术） 2024年第3期33卷 546-558页

作者： Kaixuan c.en Zh.nwei Ye Xiaoc.un xue Yonggang Yu Sc.ool of Energy and Power Engineering Nanjing University of Science and TechnologyNanjing 210094JiangsuChina Sc.ool of Sc.enc. Hangzhou Dianzi UniversityHangzhou 310018ZhejiangChina

Th. 2D sandwic. model serves as a potent tool in exploring th. influenc. of surfac. geometry on th. c.mbustion attributes of Ammonium perc.lorate/h.droxyl-terminated polybutadiene(AP/h.PB)propellant under rapid pressure *** th.c.ness of th. sandwic. propellant is derived from slic.ng th. 3D random partic.e pac.ing,an approac. th.t enables a more effec.ive examination of th. mic.o-flame *** analysis of th. predic.ed burning c.arac.eristic. h.s been performed with.experimental *** findings demonstrate a reasonable agreement,th.reby validating th. prec.sion and soundness of th. *** on th. typic.l rapid depressurization environment of solid roc.et motor(initial c.mbustion pressure is 3 MPa and th. maximum depressurization rate is 1000 MPa/s).A-type(a flatter surfac.),B-type(AP rec.sses from th. c.mbustion surfac.),and c.type(AP protrudes from th. c.mbustion surfac.)propellant c.mbustion proc.sses are numeric.lly *** c.mparison of th. evolution of gas-ph.se flame between 0.1 and 1 ms,it is disc.rned th.t th. flame strength.and form c.eated by th. th.ee sandwic. models differ signific.ntly at th. beginning stage of depressurization,with.th. flame struc.ures gradually bec.ming h.rmonized over *** are drawn by c.mparison extinc.ion times:th. surfac. geometry plays a pivotal role in th. c.mbustion proc.ss,with.AP protrusion favoring c.mbustion th. most.

关键词： AP/h.PB propellant BDP model Rapid pressure dec.y Burning surfac. geometry