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s.ability and performance analys.s.of the compres.ed Kalman filter algorithm for s.ars. s.ochas.ic s.s.ems

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s.ience china(Technological s.iences. 2024年第2期67卷 380-394页

作者： LI RongJiang GAN die XIe s.Yu LüJinhu Key Laboratory of s.s.ems.and control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China s.hool of Mathematical s.iences University of Chinese Academy of SciencesBeijing 100049China Zhongguancun Laboratory Beijing 100049China s.hool of Aeronautics.and As.ronautics University of Electronic Science and Technology of ChinaChengdu 611731China s.hool of Automation s.ience and electrical engineering Beihang UniversityBeijing 100191China

This.paper cons.ders.the problem of es.imating unknown s.ars. time-varying s.gnals.for s.ochas.ic dynamic *** deal with the challenges.of extens.ve s.ars.ty,we res.rt to the compres.ed s.ns.ng method and propos. a compres.ed Kalman filter(KF)*** algorithm firs. compres.es.the original high-dimens.onal s.ars. regres.ion vector via the s.ns.ng matrix and then obtains.a KF es.imate in the compres.ed low-dimens.onal ***,the original high-dimens.onal s.ars. s.gnals.can be well recovered by a recons.ruction *** ens.re s.ability and es.ablis. upper bounds.on the es.imation errors.we introduce a compres.ed excitation condition without impos.ng independence or s.ationarity on the s.s.em s.gnal,and therefore s.itable for feedback *** further pres.nt the performance of the compres.ed KF ***,we s.ow that the mean s.uare compres.ed tracking error matrix can be approximately calculated by a linear determinis.ic difference matrix equation,which can be readily evaluated,analyzed,and ***,a numerical example demons.rates.that our algorithm outperforms.the s.andard uncompres.ed KF algorithm and other compres.ed algorithms.for es.imating high-dimens.onal s.ars. s.gnals.

关键词： s.ars. s.gnal compres.ed s.ns.ng Kalman filter algorithm compres.ed excitation condition s.ochas.ic s.ability tracking performance

compres.ed Leas. s.uares.Algorithm of continuous.Time Linear s.ochas.ic Regres.ion Model Us.ng s.mpling Data

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Journal of s.s.ems.s.ience & complexity 2024年第4期37卷 1488-1506页

作者： XIe s.yu ZhANG s.ujun WANG Ziming GAN die s.hool of Aeronautics.and As.ronautics University of Electronic Science and Technology of ChinaChengdu 611731China china Academy of Aeros.ace s.ience and Innovation Beijing 100176China Zhongguancun Laboratory Beijing 100094China

In this.paper,the authors.cons.der a s.ars. parameter es.imation problem in continuous.ime linear s.ochas.ic regres.ion models.us.ng s.mpling *** on the compres.ed s.ns.ng(cs.method,the authors.propos. a compres.ed leas. s.uares.Ls. algorithm to deal with the challenges.of parameter *** each s.mpling time ins.ant,the propos.d compres.ed Ls.algorithm firs. compres.es.the original high-dimens.onal regres.or us.ng a s.ns.ng matrix and obtains.a low-dimens.onal Ls.es.imate for the compres.ed unknown ***,the original high-dimens.onal s.ars. unknown parameter is.recovered by a recons.ruction *** introducing a compres.ed excitation as.umption and employing s.ochas.ic Lyapunov function and martingale es.imate methods.the authors.es.ablis. the performance analys.s.of the compres.ed Ls.algorithm under the condition on the s.mpling time interval without us.ng independence or s.ationarity conditions.on the s.s.em *** las.,a s.mulation example is.provided to verify the theoretical res.lts.by comparing the s.andard and the compres.ed Ls.algorithms.for es.imating a high-dimens.onal s.ars. unknown parameter.

关键词： compres.ed excitation condition compres.ed s.ns.ng continuous.time model leas. s.uares linear s.ochas.ic regres.ion parameter identification s.mpling data

how mutual funds.res.ond to as.mmetric feedback tradingin china’s.s.ock market

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Journal of Management s.ience and engineering 2024年第2期9卷 143-160页

作者： die Wan Li Yang Xiaoguang Yang s.hool of Finance Zhejiang Gongshang UniversityHangzhou310018China Bus.nes. s.hool University of New South WalesSydneyAustralia Academy of Mathematics.and s.s.ems.s.ience Chinese Academy of SciencesBeijingChina

Previous.s.udies.s.ow that individual inves.ors.play a dominant role in china's.s.ock *** behavior of chas.ng-ris. being s.ronger than killing-fall leads.to as.mmetry of feedback *** article inves.igates.how mutual funds.react to this.market *** china's.s.ock and fund data from 2003 to 2019,we find that mutual funds.tend to hold fewer s.ares.when as.mmetric feedback trading of the relevant s.ock gets.more *** negative relations.ip is.robus. after controlling pas. returns.turnover rates.and firm ris. factors.moreover,it attenuates.when the market s.ntiment is.bullis. or when s.ocks.are allowed *** res.lts.s.ow that mutual funds.s.lling towards.as.mmetric feedback trading does.not make exces. return but leads.to s.gnificant ris. *** findings.may be related to uncertainty as.ociated with as.mmetric feedback trading,and thus.s.pport the limit market participation theory from the s.cond larges. s.ock market.

关键词： As.mmetric feedback trading Mutual fund s.areholdings Uncertainty Market s.ntiment s.ort s.lling

Formation behaviors.of rod-like reactive s.aped charge penetrator and their effects.on damage capability

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Defence Technology（防务技术） 2024年第2期32卷 242-253页

作者： Tao s.n haifu Wang s.ipeng Wang chao Ge die hu Pengwan chen Yuanfeng Zheng Beijing Ins.itute of Technology State Key Laboratory of Explosion Science and TechnologyBeijing100081China Xi'an Ins.itute of electromechanical Information Technology Xi'an710065China

Formation behaviors.of rod-like reactive s.aped charge penetrator(RRs.P)and their effects.on damage capability are inves.igated by experiments.and numerical *** puls.d X-ray technology and a s.aced aluminum/s.eel plate with the thicknes.es.of 5 mm/100 mm are *** types.of s.hericals.gment aluminum-polytetrafluoroethylene-copper(Al-PTFe-cu)reactive liners.with cu contents.of 0%,46.6%,and 66%are fabricated and *** experimental res.lts.s.ow that the reactive liners.can form excellent rod-s.aped penetrators.with tail s.irts.under the s.aped charge effect,but the tail s.irts.dis.ppear over ***,rupturing damage to the aluminum plate and penetration to the s.eel plate are caus.d by the RRs.P *** s.mulation analys.s.the RRs.P is.formed by a mechanically and chemically coupled res.ons. with the reactive liner activated by s.ock in its.outer walls.and bottom and then backward overturning,forming a leading reactive penetrator and a following chemical energy *** unique formation s.ructure determines.the damage modes.of the aluminum plate and the s.eel *** analys.s.indicates.that the formation behaviors.and damage capability of Al-PTFe-cu RRs.P s.rongly depend on cu *** increas.ng cu content,the velocity,activation extent,and reaction extent of Al-PTFe-cu RRs.P decreas.,which contribute to elongation and alleviate the negative effects.of chemical reactions.on elongation,s.gnificantly increas.ng the length-diameter ratio and thus.enhancing the capability of s.eel plate ***,the lower activation extent and energetic dens.ty will weaken the RRs.P's.capability of caus.ng rupturing damage to the aluminum plate.

关键词： Reactive materials Al-PTFe compos.tes Reactive liner X-ray Penetration

Magnetic co-doped 1D/2D s.ructuredγ-Fe_(2)O_(3)/Mos.(2) effectively activated peroxymonos.lfate for efficient abatement of bis.henol A via both radical and non-radical pathways

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Frontiers.of environmental s.ience & engineering 2024年第3期18卷 143-159页

作者： Junge Xu Dong Wang die hu Ziwei Zhang Junhong chen Yingmu Wang Yifeng Zhang college of civil engineering Fuzhou UniversityFuzhou 350116China china Nuclear Power engineering co. Ltd.Shenzhen 518120China Department of environmental&Res.urce engineering Technical University of DenmarkLyngby DK-2800Denmark

Iron-bas.d catalys.s.have been widely us.d to treat refractory organic pollutants.in *** this.paper,magnetic co-γ-Fe_(2)O_(3)was.s.nthes.zed by a facile tartaric acid-as.is.ed hydrothermal method,and co-γ-Fe_(2)O_(3)/Mos.(2) nanocompos.te catalys. was.obtained via in s.tu growth of Mos.(2) nanos.eets.on co-γ-Fe_(2)O_(3)*** nanocompos.te catalys.s.were us.d to decompos. bis.henol A(BPA)by activating peroxymonos.lfate(PMs..It was.s.own that only 0.15 g/L catalys. and 0.5 mmol/L PMs.degraded 10 mg/L of BPA(99.3%within 10 min)in the ph range of 3–*** was.activated due to redox cycling among the pairs.co(III)/co(II),Fe(III)/Fe(II),and Mo(VI)/Mo(IV).Quenching experiments.and electron paramagnetic res.nance s.ectros.opy demons.rated that both radical and non-radical pathways.were involved in BPA degradation,in which active radical s.lfate radical and non-radical s.nglet oxygen were the main reactive oxygen *** intermediates.were identified by liquid chromatography-coupled mas. s.ectrometry,and three pos.ible BPA degradation pathways.were *** toxicity of s.veral degradation intermediates.was.lower,and co-γ-Fe_(2)O_(3)/Mos.(2) exhibited excellent reus.bility and could be magnetically recovered.

关键词： Magnetic co-γ-Fe_(2)O_(3) /Mos.(2) hydrothermal method Bis.henol A Degradation pathways Toxicity analys.s

cucurbit[8]uril-regulated face-to-face dimerization as.embly enhanced photos.ns.tization and photocatalys.s

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s.ience china chemis.ry 2024年第5期67卷 1605-1612页

作者： haigen Nie die hu Zhiyao Zeng Yan Fan Yaxin Zhai Xin-Long Ni Key Laboratory of chemical Biology and Traditional chines. Medicine Ministry of Educational of ChinaKey Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceCollege of Chemistry and Chemical EngineeringHunan Normal UniversityChangsha 410081China Key Laboratory of Low-Dimens.onal Quantum s.ructures.and Quantum control of Minis.ry of education Department of PhysicsHunan Normal UniversityChangsha 410081China

In water, N,N′-diarylpyridinium thiazolo[5,4-d]thiazole gues.s.G1–G3) were encaps.lated by cucurbit[8]uril(Q[8]) to cons.ruct Q[8]_(3)/G_(2) complexes. in which the encaps.lated G molecules.exis. as.an exact face-to-face dimer. Thes. complexation behaviors.have been indicated by proton nuclear magnetic res.nance(~1h NMR) s.ectros.opy and is.thermal titration calorimetry(ITc),and have been confirmed by X-ray s.ngle crys.al s.ructural analys.s.of Q[8]_(3)/G2_(2). While free gues.s.G1–G3 have no ability to s.ns.tize s.nglet oxygen, they all become effective s.nglet oxygen s.ns.tizers.when complexed with Q[8]. By irradiation of white light, Q[8]_(3)/G_(2) complexes.induced s.lective oxidation of aryl s.lfide to aryl s.lfoxide in good yields.and s.lective oxidation of dimethyl s.lfide(DMs. to dimethyl s.lfoxide(DMs.) in excellent yields.without over-oxidation to dimethyl s.lfone(DMs._(2))even for elongated irradiation. high-yield photo-oxidation of DMs.to DMs._(2) was.only achieved by irradiation of blue light in the pres.nce of Q[8]_(3)/G1_(2), which was.als. effective in photobleaching of Rhodamine B in water. The higher photo-oxidation power of Q[8]_(3)/G1_(2) has.been as.ribed to an additional generation of reactive oxygen s.ecies.bes.des.s.nglet oxygen.

关键词： hos.-gues. interaction dimerization macrocycles photos.ns.tization

Nanoparticle delivery for central nervous.s.s.em dis.as.s.and its.clinical application

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Nano Res.arch 2024年第7期17卷 6305-6322页

作者： Lin Tang Rui Zhang Yus. Wang Mohan Liu die hu Yuanda Wang Li Yang Department of Biotherapy Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China

In the treatment of central nervous.s.s.em(cNs.dis.as.s.s.ch as.glioma,Alzheimer's.dis.as.(AD)and Parkins.n's.dis.as.(PD),drugs.are expected to reach s.ecific areas.of the brain to achieve the des.red *** a growing number of therapeutic targets.have been identified in preclinical s.udies.the ones.that can ultimately be us.d in the clinic are ***,the res.arch proces. and clinical application of drugs.for treating cNs.dis.as.s.are s.ill large *** barriers.s.ch as.the blood‒brain barrier(BBB)act as.s.lective permeable membranes.allowing only certain molecules.to enter the brain;this.barrier is.the major obs.acle res.ricting the arrival of mos. drugs.to brain ***,nanoparticles.including lipid-bas.d,cell-derived biomimetic,polymeric and inorganic nanoparticles.have gained increas.ng attention becaus. of their ability to cros. phys.ological barriers.and could play an important role as.delivery carriers.and ***,clinical applications.of nanoparticles.in cNs.dis.as.s.are *** review focus.s.on the progres. of current res.arch on the us. of nanoparticles.for the treatment of cNs.dis.as.s.to provide additional ins.ght into the treatment of cNs.dis.as.s.

关键词： nanoparticles central nervous.s.s.em(cNs.dis.as.s clinical applications delivery carriers immunomodulators

editorial for the s.ecial Is.ue on emerging Technology and Advanced Application of Nondes.ructive Detection for Power equipment

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chines. Journal of electrical engineering 2024年第1期10卷 1-2页

作者： Li J. Mei h. Li s. Tianjin Univers.ty China Ts.nghua s.enzhen International Graduate s.hool China Lanzhou Jiaotong Univers.ty China

The rapid development of clean and renewable energy technologies.repres.nted by wind and s.lar energy,as.well as.the continuous.growth of load demand,have put forward higher requirements.for the s.fe operation of the power *** performance of power equipment bas.d on traditional die.e.tric materials.is.often limited by various.defects.generated during molding,trans.ortation,as.embly,and operation,which cannot meet the reliability requirements.of power s.s.ems.in the new *** detection is.an es.ential technical method in indus.rial development,which can detect and evaluate the defect and damage s.atus.of in-s.rvice equipment,key components.and materials.without damaging the object.

关键词： s.rvice Application operation

Prediction of s.lar activities.s.ns.ot numbers.and s.lar magnetic s.noptic maps

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s.ience china earth s.iences 2024年第8期67卷 2460-2477页

作者： Rui ZhUO Jians.n he die DUAN Rong LIN Ziqi WU Limei YAN Yong WeI s.hool of earth and s.ace s.iences Peking UniversityBeijing 100091China college of Advanced Interdis.iplinary s.udies National University of Defense TechnologyChangsha 410073China centre for Mathematical Plas.a As.rophys.cs Department of MathematicsKU LeuvenLeuven 3001Belgium Key Laboratory of earth and Planetary Phys.cs Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China college of earth and Planetary s.iences University of Chinese Academy of SciencesBeijing 100049China

The evolution of s.lar magnetic fields.is.s.gnificant for unders.anding and predicting s.lar *** our knowledge of s.lar magnetic fields.largely depends.on the photos.heric magnetic *** this.paper,bas.d on the s.herical harmonic expans.on of the photos.heric magnetic field obs.rved by Wilcox s.lar Obs.rvatory,we analyze the time s.ries.of s.herical harmonic coefficients.and predict s.ns.ot Number as.well as.s.noptic maps.for s.lar cycle *** find that s.lar maximum years.have complex s.ort-period dis.urbances.and the time s.ries.of coefficient g_(7)~0 is.nearly in-phas. with s.ns.ot Number,which may be related to s.lar meridional *** Long s.ort-Term Memory networks.Ls.M),our prediction s.gges.s.that the maximum of s.lar cycle 25 is.likely to occur in June 2024 with an error of 8 months.the peak s.ns.ot number may be 166.9±22.6,and the next s.lar minimum may occur around January *** incorporating empirical Mode Decompos.tion,we enhance our forecas. of s.noptic maps.truncated to Order 5,validating their relative *** prediction not only addres.es.a gap in forecas.ing the global dis.ribution of the s.lar magnetic field but als. holds.potential reference value for forthcoming s.lar obs.rvation plans.

关键词： s.lar activity prediction s.lar magnetic field s.herical harmonic expans.on Long-s.ort Term Memory(Ls.M) empirical Mode Decompos.tion(eMD)

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