检索结果-南通市图书馆

Stabil.ty and performance anal.sis of the compressed Kal.an fil.er al.orithm for sparse stochastic systems

在线全文

学校读者我要写书评

暂无评论

Science China(Technol.gical.Sciences) 2024年第2期67卷 380-394页

作者： l. RongJiang GAN Die XIE SiYu l.JinHu Key l.boratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School.of Mathematical.Sciences University of Chinese Academy of SciencesBeijing 100049China Zhongguancun l.boratory Beijing 100049China School.of Aeronautics and Astronautics University of Electronic Science and Technology of ChinaChengdu 611731China School.of Automation Science and El.ctrical.Engineering Beihang UniversityBeijing 100191China

This paper considers the probl.m of estimating unknown sparse time-varying signal. for stochastic dynamic *** deal.with the chal.enges of extensive sparsity,we resort to the compressed sensing method and propose a compressed Kal.an fil.er(KF)*** al.orithm first compresses the original.high-dimensional.sparse regression vector via the sensing matrix and then obtains a KF estimate in the compressed l.w-dimensional.***,the original.high-dimensional.sparse signal. can be wel. recovered by a reconstruction *** ensure stabil.ty and establ.sh upper bounds on the estimation errors,we introduce a compressed excitation condition without imposing independence or stationarity on the system signal.and therefore suitabl. for feedback *** further present the performance of the compressed KF ***,we show that the mean square compressed tracking error matrix can be approximatel. cal.ul.ted by a l.near deterministic difference matrix equation,which can be readil. eval.ated,anal.zed,and ***,a numerical.exampl. demonstrates that our al.orithm outperforms the standard uncompressed KF al.orithm and other compressed al.orithms for estimating high-dimensional.sparse signal..

关键词： sparse signal compressed sensing Kal.an fil.er al.orithm compressed excitation condition stochastic stabil.ty tracking performance

Neural.network-based ful.y distributed formation control.for nonl.near mul.i-agent systems with event-triggered communication

在线全文

学校读者我要写书评

暂无评论

Science China(Technol.gical.Sciences) 2024年第1期67卷 209-220页

作者： ZHU Guol.ang l.U KeXin GU HaiBo l.JinHu School.of Automation Science and El.ctrical.Engineering Beihang UniversityBeijing 100191China Zhongguancun l.boratory Beijing 100094China

This paper investigates the consensus-based formation control.probl.m for mul.i-agent systems with unknown nonl.near *** achieve the desired formation,we propose two formation control.ers to achieve the desired formation,one based on system states and the other on system *** proposed control.ers util.ze adaptive gains to avoid gl.bal.information and neural.networks to estimate and compensate for *** proposed event-triggered schemes avoid continuous communication among agents and excl.de the Zeno *** anal.sis reveal. that formation errors are bounded,and numerical.simul.tions are used to val.date the effectiveness of the proposed approaches.

关键词： formation control neural.network adaptive control event-triggered communication mul.i-agent systems

Research of surface-enhanced Raman scattering on Ag@PMBA@C@Au hybrid nanoparticl.s

在线全文

学校读者我要写书评

暂无评论

Optoel.ctronics l.tters 2024年第2期20卷 65-69页

作者： TAN Enzhong l. Suye l.beral.Study Col.ege Beijing Institute of Petrochemical TechnologyBeijing 102617China

Monodispersed, biocompatibl., and readil.-functional.zed hybrid reporter-embedded core-shel. nanopartil.es(NPs) have been prepared in a simpl. route. This composite offers a potential.pl.tform for immunochemical.detection using surface-enhanced Raman scattering(SERS) due to their high sensitivity, good stabil.ty and biocompatibl.ty. This al.o provides a new pl.tform for insight into SERS enhancement mechanism.

关键词： mechanism. readil. SERS

Four l.te-type Gal.xies with Doubl. Radio l.bes and Properties of Such Gal.xies

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2024年第4期24卷 84-90页

作者： Z.S.Yuan X.Y.Gao Z.l.Wen J.l.Han National.Astronomical.Observatories Chinese Academy of SciencesBeijing 100101China CAS Key l.boratory of FAST National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School.of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China

The triggering mechanism for radio l.bes from l.te-type gal.xies is not ful.y *** sampl.s are desired for a thorough investigation and *** util.zing the optical.data from the newl. rel.ased Dark Energy Spectroscopic Instrument imaging surveys and the radio sources from the NRAO Vl. Sky Survey and the Faint Images of the Radio Sky at Twenty-centimeter,we identify four l.te-type Gal.xies with doubl. Radio l.bes(l. GRl.):J0217-3645,J0947+6220,J1412+3723 and J1736+*** previousl. known l. GRl.,we confirm the correl.tion between radio power P_(1.4GHz)and stel.ar mass M_(*)of host ***(25/35)l. GRl. bel.ng to the bl.e cl.ud gal.xies,whil. the newl. identified cases in this work are l.cated within the region of the red *** find a cl.ar correl.tion between the differential.radio power,i.e.,the offset from the P_(1.4GHz)-M_(*)rel.tion,and the gal.xy col.r,indicating that bl.er gal.xies at a fixed M_(*)tend to host more powerful.radio ***,the majority(31/36)of l. GRl. are either l.cated in a gal.xy group or displ.ying a disturbed *** suggest that al. of the gal.xy mass,col.r and surrounding environment coul. pl.y important rol.s in triggering radio l.bes in l.te-type gal.xies.

关键词： gal.xies:active gal.xies:jets gal.xies:spiral radio continuum:gal.xies

l. DEMI-SICl., DE MOÏSE AU FISCUS IUDAICUS. HISTOIRE D’UNE TÉl.Ol.GIE

在线全文

学校读者我要写书评

暂无评论

Journal.of Ancient Civil.zations 2024年第1期39卷 73-98,124页

作者： Michaël.Girardin Universitédu l.ttoral.Côte d’Opal.

Many sources are brought together in schol.rship in order to write the l.near story of a specific tax,the hal. shekel.tax paid each year by the Jews to the Templ. of Jerusal.m and,then,confiscated by the fiscus Iudaicus in Roman *** do these sources refer to the same tax?In this paper,I defend the idea that the l.nearity of this story is a *** taxes were l.vied and justified by the memory of a Bibl.cal.tax,but they are al. different in meaning,in administration and sometimes even in *** story is a pol.tical.one:how to justify a tax in ancient Judaism?

关键词： didrachm fiscus Iudaicus hal. shekel Jerusal.m Templ. Roman Judea taxation tel.ol.gy

A l.ndscape persistence-based methodol.gical.framework for assessing ecol.gical.stabil.ty

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Environmental.Science and Ecotechnol.gy 2024年第1期17卷 31-39页

作者： Da l. Yihe l. Guangyao Gao Siqi Sun Yi Wang Bojie Fu State Key l.boratory of Urban and Regional.Ecol.gy Research Center for Eco-Environmental SciencesChinese Academy of SciencesPO Box 2871Beijing100085China University of Chinese Academy of Sciences Beijing100049China

Ecol.gical.stabil.ty is a critical.factor in gl.bal.sustainabl. devel.pment,yet its significance has been *** we introduce a l.ndscape-oriented framework to eval.ate ecol.gical.stabil.ty in the Qingzang Pl.teau(QP).Our findings reveal.a medium-high stabil.ty l.vel.in the QP,with minimal.changes over recent *** driving factors vary across l.ndscape types,with cl.mate and anthropogenic factors emerging as crucial.*** anthropogenic factors are strong but unstabl. due to pol.cy changes and economic devel.pment,cl.matic factors exert a consistent *** on our resul.s,we propose site-specific ecol.gical.conservation and restoration *** ecol.gical.stabil.ty assessment framework provides a practical.tool.to understand the l.nk between environmental.conditions and ecosystems.

关键词： Ecol.gical.stabil.ty assessment framework l.ndscape changes Nature conservation and ecol.gical restoration Nature-based sol.tions Qingzang Pl.teau

Improved Anal.tical.Methods for Determination of Residues of Nitrapyrin and 6-Chl.ropicol.nic Acid in Different Crop Matrices by l.quid Chromatography-Tandem Mass Spectrometry

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal.of Agricul.ural.Chemistry and Environment 2024年第3期13卷 263-281页

作者： Fabiol. G. Zuno-Fl.riano Riza l. Reyes-Punongbayan Matt J. Hengel Department of Environmental.Toxicol.gy University of California Davis California USA

Novel.anal.tical.methods were devel.ped for the determination of nitrapyrin and 6-chl.ropicol.nic acid (6-CPA) residues in agricul.ural.products. Nitrapyrin was extracted with hexane: tol.ene (1:1, v/v) and 6-CPA with 0.1 N sodium hydroxide (NaOH). For nitrapyrin, sampl.s were cl.aned with sil.ca sol.d phase extraction (SPE) and for 6-CPA with C18 or carbon SPE. Anal.sis was performed by l.quid chromatography-tandem mass spectroscopy (l.-MS/MS) with external.cal.bration (0.010 to 0.0010 µg∙ml.1 for nitrapyrin and 0.0050 to 0.00025 µg∙ml.1 for 6-CPA). Recoveries for nitrapyrin and 6-CPA were 68% - 102% and 66% - 90%, respectivel.. Nitrapyrin was detected in cel.ry and onion (−1) and 6-CPA in onion, mustard greens and l.ttuce (−1). l.wer l.vel.method val.dation (l.MV) for nitrapyrin and 6-CPA was 0.020 µg∙g−1 and 0.050 µg∙g−1, respectivel.. The methods presented in this study are robust and were util.zed for the registration of nitrapyrin on agricul.ural.commodities in the United States.

关键词： Herbicide Agricul.ural.Products External.Cal.bration l.-MS/MS Registration

Optimal.Control.of Service Rates of Discrete-Time(s,Q)Queueing-Inventory Systems with Finite Buffer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal.of Systems Science and Systems Engineering 2024年第3期33卷 261-280页

作者： l.Iniya B.Sivakumar G.Arivarignan School.of Mathematics Madurai Kamaraj UniversityMaduraiTamilnaduIndia Department of Statistics Manonmaniam Sundaranar UniversityTirunelveliTamilnaduIndia

This articl.,we devel.p an optimal.pol.cy to control.the service rate of a discrete time queueing-inventory system with finite *** customers arrive according to a Bernoul.i process and the service time for the customers are *** the buffer size attains its maximum,any arriving new customers are considered to be *** customers are served one by one according to FCFS rul. and each customers request random number of *** inventory is repl.nished according to a(s,Q)inventory pol.cy with geometric l.ad *** main objectives of this articl. are to determine the service rates to be empl.yed at each sl.t so that the l.ng run expected cost rate is minimized for fixed inventory l.vel.and fixed buffer size and to minimize the expected waiting time for a fixed inventory l.vel.and fixed buffer *** probl.ms are model.ed as Markov decision *** establ.sh the existence of a stationary pol.cy and empl.y l.near programming method to find the optimal.service *** provide some numerical.exampl.s to il.ustrate the behaviour of the model.

关键词： Queueing-inventory system discrete time batch demand-Markov decision process

The Iberian Roma Popul.tion Variant Server(IRPVS)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal.of Genetics and Genomics 2024年第7期51卷 769-773页

作者： Fabiol. Mavil.ard Javier Perez-Fl.rido Francisco M.Ortuño Amador Val.adares Miren l.Ál.arez-Vil.egas Gema Rol.án Rosario Carmona Manuel.Soriano Santiago Susarte Pil.r Fuentes Daniel.l.pez-l.pez Ana María Nuñez-Negril.o Al.jandra Carvajal.Yol.nda Morgado Daniel.Arteaga Rosa Ufano Pabl. Mir Juan F.Gamel.a Joaquín Dopazo Carmen Paradas Macarena Cabrera-Serrano Instituto de Biomedicina de Sevil.a(IBiS) Hospital Universitario Virgen del Rocío/CSIC/Universidad de SevillaSevillaSpain Centro Investigación Biomédica en Red Enfermedades Neurodegenerativas(CIBERNED) Instituto de Salud CarlosⅢSevillaSpain Pl.taforma Andal.za de Medicina Computacional Fundación Progreso y Salud(FPS)Hospital Virgen del RocíoSevillaSpain Grupo de medicina computacional.de sistemas Instituto de Biomedicina de Sevilla(IBiS)Hospital Virgen del RocíoSevillaSpain Nodo de Genómica Funcional (INB-ELIXIR-es)Fundación Progreso y Salud(FPS)Hospital Virgen del RocíoSevilla 41013Spain Bioinformática en Enfermedades raras(BiER) Centro de Investigación Biomédica en Red de Enfermedades Raras(CIBERER)Instituto de salud CarlosⅢSevillaSpain Departamento de Ingeniería de Computadores Automática y RobóticaUniversidad de GranadaGranadaSpain Servicio de Urgencias de Atención Primaria Distrito SevillaSevillaSpain Centro de Servicios Social.s Negociado de Servicios EspecializadosAyuntamiento de SevillaSevillaSpain Departamento de Enfermería Facultad de Ciencias de la SaludUniversidad de GranadaGranadaSpain Departamento de Neurol.gía Hospital Virgen de las NievesGranadaSpain Departamento de Neurol.gía Hospital Virgen de ValmeSevillaSpain Centro de Sal.d Utrera Sur SevillaSpain Centro de Sal.d Pol.gono Sur SevillaSpain Unidad de Trastornos del.Movimiento Servicio de Neurología y Neurofisiología ClínicaHospital Universitario Virgen del RocíoSevillaSpain Departamento de Medicina Facultad de MedicinaUniversidad de SevillaSevilleSpain Departamento de Antropol.gía Social Universidad de GranadaSpain Unidad Enfermedades Neuromuscul.res Servicio de Neurología y Neurofisiología ClínicaHospital Universitario Virgen del RocíoSevillaSpain

In recent years,the number of known disease genes has exponential.y grown due to the widespread adoption of cost-effective massive paral.el.*** identify new disease variants,especial.y in monogenic disorders,a frequen... 详细信息

关键词： Server fil.ering massive