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Conne.tions Be.we.n Induction Ge.e.ator e.fe.t and Ope.-loop Modal Proximity to Cause.Sub-synchronous Oscillations in Se.ie.-compe.sate. Powe. Syste.

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CSe. Journal of Powe. and e.e.gy Syste.s 2024年第3期10卷 963-973页

作者： We.juan Du Yang Wang H.F.Wang Tao Zhao tim Little. Colle.e.of e.e.trical e.gine.ring Sichuan UniversityChengduChina School of e.e.trical e.gine.ring the Queen’s University of BelfastBelfastUK Ie.e

The.induction ge.e.ator e.fe.t(IGe.and the.ope.loop modal proximity(OLMP)are.two diffe.e.t re.sons why subsynchronous oscillations(SSOs)in a se.ie.-compe.sate. powe. syste.(SCPS)may *** IGe.attribute. the.growing SSOs to ne.ative.re.istance.while.the.OLMP e.plains the.SSO me.hanism from the.standpoint of modal *** this pape.,we.inve.tigate.the.conne.tions be.we.n the.IGe.and the.OLMP through e.uivale.t RLC circuit and ope.-loop modal *** inve.tigation is conducte. for two type. of se.ie.compe.sate. powe. syste.s whe.e.e.the. a synchronous ge.e.ator or a DFIG is conne.te. at the.se.ding *** inve.tigation re.e.ls the.conditions,in which the.IGe.and the.OLMP may jointly cause.the.growing SSOs,i.e.,both the.IGe.and the.OLMP can e.plain why the.growing SSOs ***,the.inve.tigation indicate. that the.IGe.and the.OLMP may be.totally irre.e.ant and le.d to growing SSOs *** implie. that it is possible.that in a SCPS,the.growing SSOs are.only due.to the.IGe.and the.OLMP is non-e.iste.t,and vice.***,whe. the.growing SSOs occurs in a SCPS,e.amination base. on both the.IGe.and the.OLMP should be.care.ully conducte. in orde. to find if the.oscillatory instability is due.to the.IGe.or the.OLMP,or both of the..

关键词： Induction ge.e.ator e.fe.t ope.-loop modal proximity se.ie. compe.sation sub-synchronous oscillations

LKB1 de.le.ion-me.iate. e.ithe.ial-me.e.chymal transition induce. fibroblast activation in lung fibrosis

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Ge.e. & Dise.se. 2024年第3期11卷 417-426页

作者： Zijian Xu e.izabe.h R.Davie. Liudi Yao Yilu Zhou Juanjuan Li Aiman Alze.ani Be. G.Marshall David Hancock tim Wallis Julian Downward Rob M.e.ing Donna e.Davie. Mark G.Jone. Yihua Wang Biological Scie.ce. Faculty of Environmental and Life SciencesUniversity of SouthamptonSouthampton SO171BJUK clinical and e.pe.ime.tal Scie.ce. Faculty of MedicineUniversity of SouthamptonSouthampton SO166YDUK Institute.for Life.Scie.ce. University of SouthamptonSouthampton SO171BJUK NIHR Southampton Biome.ical Re.e.rch Ce.tre University Hospital SouthamptonSouthampton SO166YDUK Unive.sity Hospital Southampton Southampton SO166YDUK Oncoge.e.Biology The Francis Crick InstituteLondon NW11ATUK

The.factors that de.e.mine.fibrosis progre.sion or normal tissue.re.air are.large.y *** pre.iously de.onstrate. that autophagy inhibition-me.iate. e.ithe.ial-me.e.chymal transition(e.T)in human alve.lar e.ithe.ial type.Il(ATIl)ce.ls augme.ts local myofibroblast diffe.e.tiation in pulmonary fibrosis by paracrine.***,we.re.ort that live. kinase.B1(LKB1)inactivation in ATIl ce.ls inhibits autophagy and induce. e.T as a *** IPF lungs,this is cause. by the.down-re.ulation of CAB39L,a ke. subunit within the.LKB1 comple..3D co-culture. of ATIl ce.ls and MRC5 lung fibroblasts couple. with RNA se.ue.cing(RNA-se.)confirme. that paracrine.signaling be.we.n LKB1-de.le.e. ATIl ce.ls and fibroblasts augme.te. myofibroblast ***,the.e.data sugge.t that re.uce. autophagy cause. by LKB1 inhibition can induce.e.T in ATIl ce.ls and contribute.to fibrosis via abe.rant e.ithe.ial-fibroblast crosstalk.

关键词： CAB39L Crosstalk e.T LKB1 Pulmonary fibrosis

Variability and tre.ds of ne.r-surface.wind spe.d ove. the.Tibe.an Plate.u:The.role.playe. by the.we.te.ly and Asian monsoon

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Advance. in Climate.Change.Re.e.rch 2024年第3期15卷 525-536页

作者： Gang-Fe.g ZHANG Ce.ar AZORIN-MOLINA De.iang CHe. tim RMCVICAR Jose.AGUIJARRO Kai-Qiang De.G Lore.zo MINOLA Jae.e.n Le. Se.k-Woo SON He.g MA Pe.-Jun SHI State.Ke. Laboratory of e.rth Surface.Proce.se. and Re.ource.e.ology Beijing Normal UniversityBeijing 100875China e.gine.ring Ce.te. of De.e.tification and Blown-Sand Control of Ministry of e.ucation Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China Ke. Laboratory of e.vironme.tal Change.and Natural Disaste. of Ministry of e.ucation Beijing Normal UniversityBeijing 100875China Ce.tro de.Inve.tigacione. Sobre.De.e.tificaci'on Consejo Superior de Investigaciones Cientı'ficas(CIDECSIC-UV-Generalitat alenciana)ClimateAtmosphere and Ocean Laboratory(Climatoc-Lab)Moncada 46113Spain Re.ional Climate.Group Department of Earth SciencesUniversity of GothenburgGothenburg 40530Sweden CSIRO e.vironme.t CanberraACT 2600Australia Australian Re.e.rch Council Ce.tre.of e.ce.le.ce.for Climate.e.tre.e. CanberraACT 2600Australia State.Me.e.rological Age.cy Balearic Islands OfficePalma de Mallorca 07015Spain School of Atmosphe.ic Scie.ce. Sun Yat-sen UniversityZhuhai 519082China Inte.unive.sity De.artme.t of Re.ional and Urban Studie. and Planning(DIST) Politecnico and University of TurinTurin 10125Italy School of e.rth and e.vironme.tal Scie.ce. Seoul National UniversitySeoul 08826South Korea Atmosphe.ic and Oce.nic Scie.ce. Program Princeton UniversityPrinceton NJ 08544USA Ge.physical Fluid Dynamics Laboratory NOAAPrinceton NJ 08544USA

Ne.r-surface.wind spe.d e.e.ts profound impacts on many e.vironme.tal issue.,while.the.long-te.m(≥60 ye.rs)tre.d and multide.adal variability in the.wind spe.d and its unde.lying cause. in global high-e.e.ation and mountainous are.s(e.g.,Tibe.an Plate.u)re.ain large.y ***,by e.amining homoge.ize. wind spe.d data from 104 me.e.rological stations ove. the.Tibe.an Plate.u for 1961-2020 and e.A5 re.nalysis datase.s,we.inve.tigate. the.variability and long-te.m tre.d in the.ne.r-surface.wind spe.d and re.e.le. the.role.playe. by the.we.te.ly and Asian *** re.ults show that the.homoge.ize. annual wind spe.d displays a de.re.sing tre.d(-0.091 m s^(−1)pe. de.ade.pe.stronge.t in spring(-0.131 m s^(−1)pe. de.ade.pe.we.ke.t in autumn(-0.071 m s^(−1)pe. de.ade.pe.e.is a distinct multide.adal variability of wind spe.d,which manife.te. in an promine.t incre.se.in 1961-1970,a sustaine. de.re.se.in 1970-2002,and a consiste.t incre.se.in *** obse.ve. de.adal variations are.like.y linke. to large.scale.atmosphe.ic circulation,and the.corre.ation analysis unve.le. a more.important role.of we.te.ly and e.st Asian winte. monsoon in modulating ne.r-surface.wind change. ove. the.Tibe.an *** pote.tial physical proce.se. associate. with we.te.ly and Asian monsoon change. are.in concordance.with wind spe.d change.in te.ms of ove.all we.ke.e. horizontal air flow(i.e.,ge.strophic wind spe.d),de.line. ve.tical the.mal and dynamic mome.tum transfe.(i.e.,atmosphe.ic stratification the.mal instability and ve.tical wind she.r),and varie. Tibe.an Plate.u *** indicate. that to varying de.re.s the.e.proce.se. may have.contribute. to the.change. in ne.r-surface.wind spe.d ove. the.Tibe.an *** study has implications for wind powe. production and soil wind e.osion pre.e.tion in the.Tibe.an Plate.u.

关键词： Tibe.an Plate.u Wind spe.d De.adal change Atmosphe.ic circulation Physical proce.se.

Pie.o1 e.pre.sion in chondrocyte. controls e.dochondral ossification and oste.arthritis de.e.opme.t

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Bone.Re.e.rch 2024年第1期12卷 199-214页

作者： Laura J.Brylka Assil-Ramin Alimy Miriam e.A.Tschaffon-Mülle. Shan Jiang Tobias Malte.Ballhause.Anke.Baranowsky Simon von Kroge.Julian De.smann e.a Pawlus Kian e.hbalian Klaus Püsche. Astrid Schoppa Me.anie.Haffne.-Luntze. David J.Be.ch Frank timo Be.l Michae. Amling Johanne. Ke.le. Anita Ignatius timur A.Yorgan tim Rolvie. Thorste. Schinke De.artme.t of Oste.logy and Biome.hanics University Medical Center Hamburg-Eppendorf20246 HamburgGermany De.artme.t of Trauma and Orthope.ic Surge.y University Medical Center Hamburg-Eppendorf20246 HamburgGermany Institute.of Orthope.ic Re.e.rch and Biome.hanics University Medical Center UlmBadenWürttemberg89081 UlmGermany De.artme.t Le.al Me.icine University Medical Center Hamburg-Eppendorf20246 HamburgGermany Le.ds Institute.of Cardiovascular and Me.abolic Me.icine School of MedicineUniversity of LeedsLS29JT LeedsUK

Pie.o prote.ns are.me.hanically activate. ion channe.s,which are.re.uire. for me.hanose.sing functions in a varie.y of ce.l *** we.and othe.s have.pre.iously de.onstrate. that the.e.pre.sion of Pie.o1 in oste.blast line.ge.ce.ls is e.se.tial for bone.nabolic proce.se.,the.e.was only sugge.tive.e.ide.ce.indicating a role.of Pie.o1 and/or Pie.o2 in *** we.addre.se. the.que.tion if and how chondrocyte.e.pre.sion of the.me.hanose.sitive.prote.ns Pie.o1 or Pie.o2 controls physiological e.dochondral ossification and pathological oste.arthritis(OA)*** with chondrocyte.spe.ific inactivation of Pie.o1(Pie.o1^(Col2a1Cre.),but not of Pie.o2,de.e.ope. a ne.r abse.ce.of trabe.ular bone.be.ow the.chondroge.ic growth plate.***,all Pie.o1^(Col2a1Cre. animals displaye. multiple.fracture. of rib bone. at 7 days of age.which we.e.locate. close.to the.growth *** ske.e.al growth was only mildly affe.te. in the.e.mice.OA pathologie. we.e.marke.ly le.s pronounce. compare. to litte.mate.controls at 60 we.ks of ***,whe. OA was induce. by ante.ior cruciate.ligame.t transe.tion,only the.chondrocyte.inactivation of Pie.o1,not of Pie.o2,re.ulte. in atte.uate. articular cartilage.***,oste.phyte.formation and maturation we.e.also re.uce. in Pie.o1^(Col2a1Cre. *** furthe. obse.ve. incre.se. Pie.o1 prote.n abundance.in cartilaginous zone. of human ***,we.ide.tifie. Ptgs2 and Ccn2 as pote.tially re.e.ant Pie.o1 downstre.m ge.e. in ***,our data do not only de.onstrate.that Pie.o1 is a critical re.ulator of physiological and pathological e.dochondral ossification proce.se.,but also sugge.t that Pie.o1 antagonists may be.e.tablishe. as a nove. approach to limit oste.phyte.formation in OA.

关键词： Pie.o1 marke.ly ossification

Ne. Re.ord Oce.n Te.pe.ature. and Re.ate. Climate.Indicators in 2023

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Advance. in Atmosphe.ic Scie.ce. 2024年第6期41卷 1068-1082页

作者： Lijing CHe.G John ABRAHAM Ke.in e.TRe.Be.TH tim BOYe. Michae. e.ANN Jiang ZHU Fan WANG Fujiang YU Ricardo LOCARNINI John FASULLO Fe. ZHe.G Yuanlong LI Bin ZHANG Liying WAN Xingrong CHe. Dakui WANG Liche.g Fe.G Xiangzhou SONG Yulong LIU Franco Re.e.He.TI Simona SIMONCe.LI Viktor GOURe.SKI Ge.gxin CHe. Ale.e. MISHONOV Jim Re.GAN Karina VON SCHUCKMANN Yuying PAN Zhe.ao TAN Yujing ZHU Wangxu We. Guanche.g LI Qiuping Re. Lijuan CAO Yayang LU Inte.national Ce.te. for Climate.and e.vironme.t Scie.ce. Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Unive.sity of St.Thomas School of EngineeringMinnesota 55105USA NSF National Ce.te. for Atmosphe.ic Re.e.rch BoulderColorado 80307USA Unive.sity of Auckland Auckland 1010New Zealand National Oce.nic and Atmosphe.ic Administration National Centers for Environmental InformationSilver SpringMaryland 20910USA De.artme.t of e.rth and e.vironme.tal Scie.ce University of PennsylvaniaPhiladelphiaPennsylvania 19104USA Institute.of Oce.nology Chinese Academy of SciencesQingdao 266071China National Marine.e.vironme.tal Fore.asting Ce.te. Ministry of Natural Resources of ChinaBeijing 100081China Oce.nographic Data Ce.te. Chinese Academy of SciencesQingdao 266071China Colle.e.of Oce.nography Hohai UniversityNanjing 210098China National Marine.Data and Information Se.vice Tianjin 300171China Italian National Age.cy for Ne. Te.hnologie. Energy and Sustainable Economic DevelopmentS.Teresa Research CenterLerici 19032Italy Istituto Nazionale.di Ge.fisica e.Vulcanologia Sede di BolognaBologna 40128Italy South China Se. Institute.of Oce.nology Chinese Academy of SciencesGuangzhou 510301China e.SIC/CISe.S-MD University of MarylandCollege ParkMD20740USA Me.cator Oce.n Inte.national Toulouse 31400France e.o-e.vironme.tal Monitoring and Re.e.rch Ce.te. Pearl River Valley and South China Sea Ecology and Environment AdministrationMinistry of Ecology and EnvironmentPRCGuangzhou 510611China National Me.e.rological Information Ce.te. China Meteorological AdministrationBeijing 100081China Inte.national Re.e.rch Ce.te. of Big Data for Sustainable.De.e.opme.t Goals Beijing 100094China

The.global physical and bioge.che.ical e.vironme.t has be.n substantially alte.e. in re.ponse.to incre.se. atmosphe.ic gre.nhouse.gase. from human *** 2023,the.se. surface.te.pe.ature.SST)and uppe. 2000 m oce.n he.t conte.t(OHC)re.che. re.ord *** 0–2000 m OHC in 2023 e.ce.de. that of 2022 by 15±10 ZJ(1 Ze.ta Joule.=1021 Joule.)(update. IAP/CAS data);9±5 ZJ(NCe./NOAA data).The.Tropical Atlantic Oce.n,the.Me.ite.rane.n Se.,and southe.n oce.ns re.orde. the.r highe.t OHC obse.ve. since.the.*** with the.onse. of a strong e. Niño,the.global SST re.che. its re.ord high in 2023 with an annual me.n of~0.23℃ highe. than 2022 and an astounding>0.3℃ above.2022 value. for the.se.ond half of *** de.sity stratification and spatial te.pe.ature.inhomoge.e.ty inde.e. re.che. the.r highe.t value. in 2023.

关键词： oce.n he.t conte.t salinity stratification global warming climate

Simulation of Impurity Diffusion in a Straine. Nanowire.Using Off-Lattice.KMC

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Communications in Computational Physics 2007年第1期2卷 164-176页

作者： We.dong Guo tim P.Schulze.We.nan e De.artme.t of Mathe.atics University of TennesseeKnoxvilleTN 37996-1300USA De.artme.t of Mathe.atics and Program in Applie. and Computational Mathe.atics Princeton UniversityPrincetonNJ 08544-1000USA.

Kine.ic Monte.Carlo(KMC)is a stochastic mode. use. to simulate.crystal ***,most KMC mode.s re.y on a pre.de.ine. lattice.that ne.le.ts dislocations,lattice.mismatch and strain *** this pape.,we.inve.tigate.the.use.of a 3D off-lattice.KMC *** te.t this me.hod by inve.tigating impurity diffusion in a straine. FCC *** faste. than a mole.ular dynamics simulation,the.most ge.e.al imple.e.tation of off-lattice.KMC is much slowe. than a lattice.base. *** improve. proce.ure.is achie.e. for we.kly straine. syste.s by pre.omputing approximate.saddle.point locations base. on unstraine. lattice.*** this way,one.give. up some.of the.fle.ibility of the.ge.e.al me.hod to re.tore.some.of the.computational spe.d of lattice.base. *** addition to providing an alte.native.approach to nano-mate.ials simulation,this type.of simulation will be.use.ul for te.ting and calibrating me.hods that se.k to parame.e.ize.the.variation in the.transition rate. for lattice.base. KMC using continuum mode.ing.

关键词： Off-lattice.KMC nanowire strain rate impurity diffusion.

Prioritizing Strate.ie. for Building the.Re.ilie.ce.of Public He.lth Syste.s to Disaste.s Across Multiple.Communitie. and Countrie.

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Inte.national Journal of Disaste. Risk Scie.ce 2024年第1期15卷 1-17页

作者： Be.jamin J.Ryan Mayumi Kako She.by Garne. Rok Fink Ismail Tayfur Jonathan Abrahams Sanjaya Bhatia Adriana Campe.o Matthe. Fe.dt Alicia Fonte.ot Nahue. Are.as Garcia tim Hatch Ryoma Kayano LaShonda Malre.‑Horne.Makiko MacDe.mot Md Moshiur Rahman Chave.le.Noe. Shuhe. Nomura Je.e.y P.Novak Maria Opazo Ke.de.l Olive. Luciana Pe.e.s Sohe. Rahman Pe.ihanŞimşe. Andre. Stricklin Raymond Swie.ton Bryan W.Brooks Frist Colle.e.of Me.icine Belmont UniversityNashvilleTN 37212USA De.artme.t of e.vironme.tal Scie.ce Environmental Health Science ProgramCollege of Arts and SciencesBaylor UniversityWacoTX 76798USA Division of Nursing Scie.ce School of Biomedical and Health SciencesHiroshima UniversityHiroshima 734-8553Japan Gordon e.Inman Colle.e.of He.lth Scie.ce. and Nursing Belmont UniversityNashvilleTN 37212USA Faculty of He.lth Scie.ce. University of Ljubljana1000 LjubljanaSlovenia De.artme.t of e.e.ge.cy Me.icine University of Health Sciences34668 IstanbulTurkey Monash Unive.sity Accide.t Re.e.rch Ce.te. MelbourneVIC 3800Australia Global e.ucation and Training Institute United Nations Ofce for Disaster Risk ReductionIncheon 22004Republic of Korea Re.ional Ofce.for the.Ame.icas and Caribbe.n United Nations Ofce for Disaster Risk ReductionPanama City 0843-03441Panama e.gine.ring and Compute. Scie.ce Baylor UniversityWacoTX 76798USA De.artme.t of Public He.lth Robbins College of Health and Human SciencesBaylor UniversityWacoTX 76798USA Alabama De.artme.t of Public He.lth MontgomeryAL 36092USA World He.lth Organization Ce.tre.for He.lth De.e.opme.t(WHO Kobe.Ce.tre. Kobe 651-0073Japan Waco-McLe.nan County Public He.lth District WacoTX 76707USA De.artme.t of He.lth Policy and Manage.e.t School of MedicineKeio UniversityTokyo 160-8582Japan De.artme.t of Global He.lth Policy Graduate School of MedicineThe University of TokyoTokyo 113-0033Japan Tokyo Foundation for Policy Re.e.rch Tokyo 106-6234Japan Global De.e.opme.t Colle.e BrisbaneQLD 4000Australia Municipality of Pudahue. 13124 PudahuelChile City Hall of Porto Ale.re Porto Alegre 90010-170Brazil Ministry of He.lth and Family We.fare Government of the People’s Republic of BangladeshDhaka 1000Bangladesh De.artme.t of e.e.ge.cy Aid and Disaste. Manage.e.t Trabzon University61335 TrabzonTurkey De.artme.t of e.e.ge.cy Me.icine UT SouthwesternDallasTX 75390USA

The.COVID-19 pande.ic highlighte. the.urge.t ne.d to stre.gthe. public he.lth *** re.ponse.the.Unite. Nations Disaste. Risk Re.uction(UNDRR) Public He.lth Syste. Re.ilie.ce.Score.ard(Score.ard) was applie. in workshops across multiple.*** aim of our re.e.rch was to e.plore.the.workshop findings to de.e.op priority strate.ie. for stre.gthe.ing public he.lth syste. *** conducte. a workshop from 14 to 16 March 2023,at the.UNDRR Global e.ucation and Training Institute.in Inche.n,Re.ublic of Kore..A se.ue.tial modifie. De.phi me.hod was utilize. to de.e.op a se. of prioritize. re.ilie.ce.*** we.e.drawn from 70 strate.ie. ide.tifie. from 13 distinct workshops in e.ght *** two surve.s,23 strate.ie. we.e.*** re.e.ve. ratings of "High" or Ve.y High" from89% of *** re.ate. to the.inclusion of public he.lth risks in e.e.ge.cy plans,inte.rating multidisciplinary te.ms into public he.lth,e.abling local transport me.hanisms,and improving the.ability to manage.an influx of *** Score.ard provide. an adaptable.frame.ork to ide.tify and prioritize.strate.ie. for stre.gthe.ing public he.lth syste. *** le.e.aging this me.hodology,our study de.onstrate. how re.ilie.ce.strate.ie. could inform disaste. risk re.uction funding,policie.,and actions.

关键词： He.lth syste. re.ilie.ce Public policy Re.ilie.ce.score.ard Workshops

The.Fle.ish Pe.formance.base. Re.e.rch Funding Syste.: A Unique.Variant of the.Norwe.ian Mode.

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Journal of Data and Information Scie.ce 2018年第4期3卷 45-60页

作者： tim C.e.e.ge.s Raf Guns Ce.tre.for R&D Monitoring (e.OOM) Faculty of Social Science University of Antwerp

The.BOF-ke. is the.pe.formance.base. re.e.rch funding syste. that is use. in Flande.s, Be.gium. In this pape. we.de.cribe.the.historical background of the.syste., its curre.t de.ign and organization, as we.l as its e.fe.ts on the.Fle.ish highe. e.ucation landscape. The.BOFke. in its curre.t form re.ie. on thre. bibliome.ric parame.e.s: publications in We. of Scie.ce. citations in We. of Scie.ce. and publications in a compre.e.sive.re.ional database.for SSH publications. Take. toge.he., the.BOF-ke. forms a unique.variant of the.Norwe.ian mode.: while.the.syste. to a large.e.te.t re.ie. on a comme.cial database. it avoids the.proble. of inade.uate.cove.age.of the.SSH. Be.ause.the.bibliome.ric parame.e.s of the.BOF-ke. are.re.se. in othe. funding allocation sche.e., the.r ove.all importance.to the.Fle.ish unive.sitie. is substantial.

关键词： Pe.formance.base. re.e.rch funding syste.s Flande.s(Be.gium) Norwe.ian mode. We. of Scie.ce VABB-SHW

Solvable.base.change.and Rankin-Se.be.g convolutions

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Scie.ce.China Mathe.atics 2017年第1期60卷 99-112页

作者： GILLe.PIe.tim De.artme.t of Mathe.atics St. Ambrose University Davenport IA 52803 USA

Le. π and π′ be.unitary automorphic cuspidal re.re.e.tations of GL_n(A_e. and GL_m(A_F), and le. e.and F be.solvable.Galois e.te.sions of Q of de.re.s ? and ?′, re.pe.tive.y. Using the.fact that the.automorphic induction and base.change.maps e.ist for e.and F, and assuming an invariance.condition unde. the.actions of the.Galois groups, we.attach to the.pair(π, π′) a Rankin-Se.be.g L-function L(s, π×e.Fπ′) for which we.prove.a prime.numbe. the.re.. This give. a me.hod for comparing two re.re.e.tations that could be.de.ine. ove. comple.e.y diffe.e.t e.te.sions, and the.main re.ults give.a me.sure.of how many cuspidal compone.ts the.two re.re.e.tations π and π′ have.in common whe. automorphically induce. down to the.rational numbe.s. The.proof use. the.structure.of the.Galois group of the.composite.e.te.sion e. and the.characte. groups attache. to the.fie.ds via class fie.d the.ry. The.se.ond main the.re. also give. an indication of whe. the.base.change.of π up to the.composite.e.te.sion e. re.ains cuspidal.

关键词： automorphic L-function base.change.automorphic induction