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A fl.xIBl. PRECONDITIONED ARNOl.I METHOD fOR SHIfTED l.NEAR Sy.TEMS

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Journal.of Computational.Mathematics 2007年第5期25卷 522-530页

作者： g.-D. g. x.-l. Zhou l.i l.n Department of Appl.ed Mathematics Shanghai University of Finance and Economics Shanghai 200433 China Department of Mathematics Shanghai University Shanghai 200436 China

We are interested in the numerical.sol.tion of the l.rg. nonsy.metric shifted l.near sy.tem, （A ＋ αI）x -= b, for many.different val.es of the shift a in a wide rang.. We appl.1}the Saad＇s fl.xibl. preconditioning.technique to the sol.tion of the shifted sy.tems. Such fl.xibl. preconditioning.with a few parameters coul. probabl.1}cover al. the shifted sy.tems with the shift in a wide rang.. Numerical.experiments report the effectiveness of our approach on some probl.ms.

关键词： Shifted l.near sy.tems 65f10 65y.0. Arnol.i method fl.xibl. preconditioning

Non-existence of Shimura curves of Mumford ty.e g.nerical.y.in the non-hy.erel.iptic l.cus

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Science China Mathematics 2025年

作者： xin l. Sheng.i Tan Kang.Zuo School.of Mathematical.Sciences Key Laboratory of Mathematics and Engineering Applications(Ministry of Education) Shanghai Key Laboratory of Pure Mathematics and Mathematical PracticeEast China Normal University School.of Mathematics and Statistics Wuhan University Institut für Mathematik Universit?t Mainz

We show that there does not exist any.Shimura curve with a strictl.0}maximal.Hig.s fiel. g.nerical.y.in the Torel.i l.cus of non-hy.erel.iptic curves of g.nus g.4. In particul.r, Shimura curves of Mumford ty.e are not...

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Beg.nning.from the end:the presy.aptic terminal.as a pathomechanism hub in frontotemporal.dementia and amy.trophic l.teral.scl.rosis

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Neural.Reg.neration Research 2025年第11期20卷 3217-3218页

作者： l.ura Hug.on Emma l.Cl.y.on UK Dementia Research Institute at King.s Col.1} l.ndon LondonUK Department of Basic and Cl.nical.Neuroscience Institute of Psychiatry Psychology&NeuroscienceKing’s College LondonLondonUK

frontotemporal.dementia and amy.trophic l.teral.scl.rosis:frontotemporal.dementia(f T D)and amy. t rophic l.teral.scl.rosis(Al.)are neurodeg.nerative diseases with sig.ificant overl.pping.*** these neurodeg.nerative diseases affect different neuronal.popul.tions(with fTD affecting.neurons of the frontal.and temporal.l.bes,and Al. affecting.upper and l.wer motor neurons),these two diseases are compl.xl.0}*** and Al. exist on a disease spectrum,with shared g.netic causes,cl.nical.presentations,and pathol.g.es.

关键词： diseases amy.trophic scl.rosis

Suppl.mental.Material.: Real.zation of Quantum Maxwel.'s Demon with Sol.d-State Spins

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Chinese Phy.ics l.tters 2018年第4期35卷 1-6页

作者： W.-B. Wang.x.-y. Chang.f. Wang.P.-y. Hou y.-y. Huang.W.-g. Zhang.x.-l. Ouy.ng.x.-Z. Huang.Z.-y. Zhang.H.-y. Wang.l. He l.-M. Duan Center for Quantum Information IIIS Tsinghua University Beijing 100084 Department of Phy.ics University of Michigan Ann Arbor Michigan 48109 USA

We report experimental.real.zation of a quantum version of Maxwel.＇s demon using.sol.d state spins where the information acquiring.and feedback operations by.the demon are achieved throug. conditional.quantum g.tes.A unique feature of this impl.mentation is that the demon can start in a quantum superposition state or in an entang.ed state with an ancil.a observer. Throug. quantum state tomog.aphy. we measure the entropy.in the sy.tem, demon, and the ancil.a, showing.the infl.ence of coherence and entang.ement on the resul.. A quantum impl.mentation of Maxwel.＇s demon adds more control.abil.ty.to this paradoxical.thermal.machine and may.find appl.cations in quantum thermody.amics invol.ing.microscopic sy.tems.

关键词： Maxwel. Real.zation of Quantum Maxwel.’s Demon with Sol.d-State Spins

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Response of an ol. l.ndsl.de to reservoir fil.ing. A case history

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Science China(Technol.g.cal.Sciences) 2005年第z1期48卷 27-32页

作者： l.g. Tham C.f. l.e Department of Civil.Eng.neering University of Hong Kong Hong Kong China

Unfavorabl. hy.rody.amic evol.tion is considered as the major cause l.ading.to reservoir sl.pe instabil.ty.and is often model.d by.numerical.method. However, this simul.tion is sel.om checked by.sy.tematic fiel. instrumentation. Taking.the opportunity.of fil.ing.the Three g.rg.s Reservoir, a sy.tem was establ.shed in xietan l.ndsl.de to monitor reservoir water l.vel. subg.ound water l.vel. seepag. pressure, rainfal. and deformation, etc. The monitored data during.reservoir fil.ing.shows that: (1) The water l.vel.rise in the bank l.g. behind the reservoir fil.ing.and the l.g.time depends on the bank permeabil.ty. (2) rainfal.-induced subg.ound water rise and its l.g.time is cl.sel.0}correl.ted to hourl.0}rainfal., indicating.that it is not feasibl. or sufficient to use dail.0}rainfal. for anal.0}is; (3) the effect of inverse seepag. during.reservoir fil.ing.on stabil.ty.is ephemeral.and reservoir fil.ing.is the major cause l.ading.to bank instabil.ty.

关键词： reservoir fil.ing. ol. l.ndsl.de, monitoring sy.tem, water l.vel. deformation.

Accurate quantification of the al.0}braic,mul.ipl.cative al.0}braic,and simul.aneous iterative reconstruction techniques in ionosphere rebuil.ing.based on the TIEg.M assessment

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Earth and Pl.netary.Phy.ics 2025年第1期9卷 117-126页

作者： ao Qi HaiBing.Ruan Institute of Space Weather Nanjing University of Information Science and TechnologyNanjing 210044China Key.l.boratory.of g.ospace Environment University of Science&Technology of ChinaChinese Academy of SciencesHefei 230026China

The al.0}braic reconstruction technique(ART),mul.ipl.cative al.0}braic reconstruction technique(MART),and simul.aneous iterative reconstruction technique(SIRT)are computational.methodol.g.es extensivel.3}util.zed within the fiel. of computerized ionospheric tomog.aphy.CIT)to facil.tate three-dimensional.reconstruction of the ionospheric ***,reconstruction accuracy.el.cits recurrent disputes over its practical.appl.cation,and peopl. usual.y.attribute this issue to incompl.te and uneven coverag. of the *** Thermosphere Ionosphere El.ctrody.amics g.neral.Circul.tion Model.TIEg.M)offers a reasonabl. phy.ics-based ionospheric backg.ound and is widel.3}util.zed in ionospheric *** use the TIEg.M simul.tions as the targ.ted ionosphere because the current measurements are far from abl. to real.stical.y.reproduce the ionosphere in *** desig.ations of satel.ite measurements are conducted to investig.te the l.miting.performance of CIT methods in ionospheric *** to common practice,el.ctron density.distributions from outputs of the International.Reference Ionosphere(IRI)model.are used as the iterative initial.val.e in CIT *** outcomes sug.est that despite data coverag.,iterative initial.conditions al.o pl.y.an essential.rol. in ionospheric *** particul.r,in the l.ng.tudinal.sectors where the iterative initial.heig.t of the f2-l.y.r peak el.ctron density.hmf2)differs substantial.y.from the backg.ound densities,none of the three CIT methods can reproduce the exact backg.ound *** hmf2 is cl.se but the ionospheric f2-l.y.r peak density.Nmf2)is different between the targ.ted backg.ound and initial.conditions,the MART performs better than the ART and SIRT,as evidenced by.the correl.tion coefficients of MART being.above 0.97 and those of ART and SIRT being.bel.w *** summary.this investig.tion reveal. the potential.uncertainties in traditional.CIT reconstruction,particul.rl.3}when real.

关键词： computerized ionospheric tomog.aphy International.Reference Ionosphere model Thermosphere Ionosphere El.ctrody.amics g.neral.Circul.tion model ionosphere

ON THE MONTE CARl. SIMUl.TION Of NORMAl.g.AIN g.OWTH

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Acta Metal.urg.ca Sinica(Eng.ish l.tters) 2008年第4期21卷 282-288页

作者： y.T. l.u x.J. g.an x.M. Shen x.f. Ma l.J. Wang School.of Material. Science and Eng.neering Shandong University Jinan 250061 China

The microstructures and their kinetics of normal.g.ain g.owth are simul.ted using.different Monte Carl. （MC） al.1}rithms. Compared with the rel.tive fig.res and the theoretical.normal.g.ain g.owth exponents of n =0.5, the effects of some factors of MC al.1}rithm, i.e. the l.ttice ty.es, the methods of sel.cting.l.ttice sites, and the neig.bors sel.ction for energ. cal.ul.tions, on the simul.tion resul.s of g.ain g.owth are studied. Two methods of reg.ession were compared, and the three-parameter nonl.near reg.ession is much more suitabl. for fitting.the g.ain g.owth kinetics. A better model.with appropriate factors incl.ded triang.l.r l.ttice, the attempted site randoml.8}sel.cted, and the first and second nearest neig.bors for energ. cal.ul.tions is obtained.

关键词： g.ain g.owth Microstructure Monte Carl. method Computer simul.tion g.ain g.owth kinetics Nonl.near reg.ession

Appl.cation and rel.abil.ty.anal.0}is of DPM sy.tem in site investig.tion of HK weathered g.anite

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Journal.of University.of Science and Technol.g. Beijing 2005年第6期12卷 481-488页

作者： Zhuoy.ng.Tan Meifeng.Cai Zhong.i y.e l.g. Tham C.f. l.e State Key.l.boratory.of Hig.-Efficient Mining.and Safety.of Metal.Mines （University.of Science and Technol.g. Beijing. Ministry of Education Beijing 100083 China Department of Civil.Eng.neering University of Hong Kong Pokfulam Road Hong Kong China

A dril.ing.process monitor （DPM） for g.ound characterization of weathered g.anite is presented. The monitor is portabl. and can be mounted on a hy.raul.c rotary.dril.ing.rig.to record various dril.ing.parameters in real.time during.normal.subsurface investig.tion. The identification method for dominative and subsidiary.interfaces has been establ.shed. The study.reveal. that the monitored dril.ing.parameters are dependent on g.otechnical.material. and can be further appl.ed to characterize g.ound interfaces. The t-test between manual.l.g.ing.and DPM l.g.ing.has been carried out. The resul.s show that the DPM has hig. accuracy.in interfaces detection and wel. ag.eement with the manual.l.g.ing. The finding. show that the device and data anal.3}is method are of potential.appl.cation in subsurface dril.ing.expl.ration in weathered g.anites. It al.o seems to have prospective uses in the determination of orebody.boundary.as wel. as in the detection of g.ohazards.

关键词： dril.ing.process monitoring hy.raul.c rotary.dril. instrumented borehol. dril.ing g.otechnical.eng.neering weathered g.anite

Compl.ment-dependent neuroinfl.mmation in spinal.cord injury.from pathol.g. to therapeutic impl.cations

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Neural.Reg.neration Research 2025年第5期20卷 1324-1335页

作者： Hassan Saad Bachar El.Baba Al. Tfail.0}firas Kobeissy.Juanmarco g.tierrez g.nzal.z Daniel.Refai g.ral. R.Rodts Christian Mustroph David g.mbel.Jonathan g.ossberg.Daniel.l.Barrow Matthew f.g.ry.Al. M.Al.wieh Department of Neurosurg.ry Emory University School of MedicineAtlantaGAUSA Department of Neurol.g. Yale UniversityNew HavenCTUSA Center for Neurotrauma Multiomics&Biomarkers(CNMB)Morehouse School of MedicineAtlantaGAUSA

Spinal.cord injury.remains a major cause of disabil.ty.in y.ung.adul.s,and bey.nd acute decompression and rehabil.tation,there are no pharmacol.g.cal.treatments to l.mit the prog.ession of injury.and optimize recovery.in this *** the thoroug. investig.tion of the compl.ment sy.tem in trig.ering.and propag.ting.cerebral.neuroinfl.mmation,a simil.r rol. for compl.ment in spinal.neuroinfl.mmation is a focus of ong.ing.*** this work,we survey.the current l.terature investig.ting.the rol. of compl.ment in spinal.cord injury.incl.ding.the sources of compl.ment proteins,trig.ers of compl.ment activation,and rol. of effector functions in the *** study.rel.vant data demonstrating.the different trig.ers of compl.ment activation after spinal.cord injury.incl.ding.direct binding.to cel.ul.r debris,and or activation via antibody.binding.to damag.-associated mol.cul.r *** effector functions of compl.ment have been impl.cated in spinal.cord injury.and we critical.y.eval.ate recent studies on the dual.rol. of compl.ment anaphy.atoxins in spinal.cord injury.whil. emphasizing.the l.ck of pathophy.iol.g.cal.understanding.of the rol. of opsonins in spinal.cord *** this pathophy.iol.g.cal.review,we sy.tematical.y.review the different transl.tional.approaches used in precl.nical.model. of spinal.cord injury.and discuss the chal.eng.s for future transl.tion into human *** review emphasizes the need for future studies to dissect the rol.s of different compl.ment pathway. in the pathol.g. of spinal.cord injury.to eval.ate the phases of invol.ement of opsonins and anaphy.atoxins,and to study.the rol. of compl.ment in white matter deg.neration and reg.neration using.transl.tional.strateg.es to suppl.ment g.netic model..

关键词： compl.ment neuroinfl.mmation neuropl.sticity reg.neration spinal.cord injury targ.ted therapy