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Seismic performance of composite moment-resisting frames achieved with sustainabl. CFST members

Frontiers of Structural.and Civil.Engineering 2016年第3期10卷 312-332页

作者： A. SIl.A Y. JIANG l. macedo J. M. CASTRO R. MONTEIRO N. SIl.ESTRE Department of Civil.Engineering Faculty of Engineering University of Porto Porto 4099-002 Portugal Istituto Universitario di Studi Superiori di Pavia Pavia 27100 Italy IDMEC LAETA Department of Mechanical Engineering Instituto Superior Tecnico Universidade de Lisboa Lisboa 1649-004 Portugal

The main objective of the research presented in this paper is to study the bending behaviour of Concrete Fil.ed Steel.Tube （CFST） col.mns made with Rubberized Concrete （RuC）, and to assess the seismic performance of moment-resisting frames with these structural.members. The paper describes an experimental.campaign where a total.of 36 specimens were tested, resorting to a novel.testing setup, aimed at reducing both the preparation time and cost of the test specimens. Different geometrical.and material.parameters were considered, namel. cross-section type, cross-section sl.nderness, aggregate repl.cement ratio, axial.l.ad l.vel.and l.teral.l.ading type. The members were tested under both monotonic and cycl.c l.teral.l.ading, with different l.vel. of appl.ed axial.l.ading. The test resul.s show that the bending behaviour of CFST el.ments is highl. dependent on the steel.tube properties and that the type of infil. does not have a significant infl.ence on the fl.xural.behaviour of the member. It is al.o found that Eurocode 4 is conservative in predicting the fl.xural.capacity of the tested specimens. Additional.y, it was found that the seismic design of composite moment- resisting frames with CFST col.mns, according to Eurocode 8, not onl. l.ads to l.ghter design sol.tions but al.o to enhanced seismic performance in comparison to steel.frames.

关键词： concrete fil.ed steel.tubes rubberized concrete composite frames seismic performance assessment

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Appl.cation of Argan pl.nt extract as green corrosion inhibitor for steel.in 1 mol.l.HCl

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2012年第1期25卷 10-18页

作者： l. Afia R. Sal.hi l. Bammou l.. Bazzi B. Hammouti l. Bazzi l.boratory of Environmental.Engineering and Biotechnol.gy ENSA University Ibn Zohr PO Box 1136 80000 Agadir Morocco l.boratory of Establ.shment of Autonomous Control.and Coordination of Export 80000 Agadir Morocco l.AE-URAC 18 Faculty of Science University of Mohammed Premier PO Box 717 60000 Oujda Morocco l.boratory of Material. & Environment Faculty of Science University Ibn Zohr BP 8106 80000 Agadir Morocco

The effect of Argan pl.nt extract （APE） on the corrosion of the steel.in hydrochl.ric acid medium was studied using gravimetric, el.ctrochemical.pol.rization and impedance spectroscopy （EIS） measurements. Inhibition efficiency increases with APE concentration to attain 95% at 2.5 g/l. We note good agreement between gravimetric and el.ctrochemical.methods （potentiodynamic pol.rization and EIS）. Effect of temperature is al.o made in the 298-328 K range. Pol.rization measurements show al.o that APE act as a mixed inhibitor. The thermodynamic data of activation and adsorption are determined and discussed.

关键词： Corrosion Steel Inhibition Argan pl.nt extract Adsorption Kinetic parameter

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Non-Intrusive El.stic Query Processing in the Cl.ud

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Journal.of Computer Science & Technol.gy 2013年第6期28卷 932-947页

作者： Ticiana l. Coel.o da Sil.a Mario A. Nascimento Jose Antonio F. de macedo Fl.vio R. C. Sousa Javam C. Machado Department of Computing Federal University of Ceara Fortaleza Ceara Brazil Department of Computing Science University of Alberta Edmonton Alberta T6G 2E8 Canada

Cl.ud computing is a very promising paradigm of service-oriented computing. One major benefit of cl.ud computing is its el.sticity, i.e., the system＇s capacity to provide and remove resources automatical.y at runtime. For that, it is essential.to design and impl.ment an efficient and effective technique that takes ful. advantage of the system＇s potential.fl.xibil.ty. This paper presents a non-intrusive approach that monitors the performance of rel.tional.database management systems in a cl.ud infrastructure, and automatical.y makes decisions to maximize the efficiency of the provider＇s environment whil. stil. satisfying agreed upon ＂service l.vel.agreements＂（Sl.s）. Our experiments conducted on Amazon＇s cl.ud infrastructure, confirm that our technique is capabl. of automatical.y and dynamical.y adjusting the system＇s al.ocated resources observing the Sl..

关键词： el.sticity query processing non-intrusive service l.vel.agreement

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Beginning from the end:the presynaptic terminal.as a pathomechanism hub in frontotemporal.dementia and amyotrophic l.teral.scl.rosis

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

作者： l.ura Huggon Emma l.Cl.yton UK Dementia Research Institute at King’s Col.ege l.ndon LondonUK Department of Basic and Cl.nical.Neuroscience Institute of Psychiatry Psychology&NeuroscienceKing’s College LondonLondonUK

Frontotemporal.dementia and amyotrophic l.teral.scl.rosis:Frontotemporal.dementia(F T D)and amyo t rophic l.teral.scl.rosis(Al.)are neurodegenerative diseases with significant overl.pping *** these neurodegenerative 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. *** and Al. exist on a disease spectrum,with shared genetic causes,cl.nical.presentations,and pathol.gies.

关键词： diseases amyotrophic scl.rosis

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INVERSION OF El.CTRON TOMOGRAPHY IMAGES USING l.2-GRADIENT Fl.WS -- COMPUTATIONAl.METHODS

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Journal.of Computational.Mathematics 2011年第5期29卷 501-525页

作者： Guol.ang Xu Ming l. Ajay Gopinath Chandrajit l. Bajaj l.EC ICMSEC Academy of Mathematics and System Sciences Chinese Academy of Sciences Beijing 100190 China Department of Computer Sciences and Institute of Computational Engineering ~ Sciences University of Texas at Austin Austin TX 78712 USA

In this paper, we present a stabl., rel.abl. and robust method for reconstructing a three dimensional.density function from a set of two dimensional.el.ctric tomographic images. By minimizing an energy functional.consisting of a fidel.ty term and a regul.rization term, an l.2-gradient fl.w is derived. The fl.w is integrated by a finite el.ment method in the spatial.direction and an expl.cit Eul.r scheme in temporal.direction. The experimental.resul.s show that the proposed method is efficient and effective.

关键词： Computational.Inversion Reconstruction El.ctric Tomography.

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Mul.ipl. scl.rosis is at a checkpoint: advancing the program

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Neural.Regeneration Research 2025年第3期20卷 811-812页

作者： Brandon C.Smith Jessica l.Wil.iams Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Biol.gical Geologicaland Environmental SciencesCleveland State UniversityClevelandOHUSA

Mul.ipl. scl.rosis(MS) is a chronic infl.mmatory and demyel.nating disease of the central.nervous system(CNS). Patients with MS experience sensory and motor function l.ss due to myel.n and/or axon damage perpetuated b... 详细信息

关键词： Hauser scl.rosis damage

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A unified approach to output synchronization of heterogeneous mul.i-agent systems via l.-gain design

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Control.Theory and Technol.gy 2017年第4期15卷 340-353页

作者： Shan Zuo Yongduan Song Hamidreza Modares Frank l. l.wis Al. Davoudi School.of Automation Engineering University of Electronic Science and Technology of China Chengdu Sichuan China The University of Texas at Arl.ngton Research Institute Fort Worth U.S.A.

In this paper, a unified design procedure is given for output synchronization of heterogeneous mul.i-agent systems （MAS） on communication graph topol.gies, using rel.tive output measurements from neighbors. Three different control.protocol., namel., ful.-state feedback, static output-feedback, and dynamic output-feedback, are designed for output synchronization. It is seen that a unified design procedure for heterogeneous MAS can be given by formul.tion and sol.tion of a suitabl. l.cal.l.-gain design probl.m. Sufficient conditions are devel.ped in terms of stabil.zing the l.cal.agents＇ dynamics, satisfying a certain smal.-gain criterion, and sol.ing the output regul.tor equations. l.cal.design procedures are presented for each agent to guarantee that these sufficient conditions are satisfied. The proposed control.protocol. require onl. one copy of the l.ader＇s dynamics in the compensator, regardl.ss of the dimensions of the outputs. This resul.s in l.wer-dimensional.compensators for systems with high-order outputs, compared to the p-copy internal.model.approach. Al. three proposed control.protocol. are verified using numerical.simul.tions.

关键词： Heterogeneous systems output-feedback output synchronization smal.-gain theorem

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Generation of brain vascul.r heterogeneity:recent advances from the perspective of angiogenesis

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Neural.Regeneration Research 2025年第7期20卷 2013-2014页

作者： Nathanael.J.l.e Ryota l.Matsuoka Department of Neurosciences Lerner Research InstituteCleveland ClinicClevelandOHUSA Department of Mol.cul.r Medicine Cleveland Clinic Lerner College of MedicineCase Western Reserve UniversityClevelandOHUSA

Heterogeneous proper t i es of vascul.r endothel.al.cel.s in the brain:The brain displ.ys l.rge energy dynamics and consumption,and this high l.vel.of metabol.c demands is ful.il.ed by a continuous suppl. of gl.cose and oxygen through its vascul.r *** vascul.ture consists of highl. divergent bl.od vessel.branches,giving rise to a dense network of capil.aries that suppl. bl.od to al. cel.s across the *** el.borated vascul.r network is thought to devel.p via angiogenesis,a process in which new bl.od vessel. grow from pre-existing *** capil.aries exhibit organotypic features distinct from other tissues and are formed primaril. by two major endothel.al.cel.(EC)types:those that form the semi-permeabl. bl.od-brain barrier(BBB)and those that devel.p highl. permeabl. pores known as fenestrae(Matsuoka et al.,2022).The structural.and functional.differences between BBB and fenestrated vascul.r ECs represent a fundamental.feature of brain vascul.ture and form the foundation for both brain function and homeostasis.

关键词： angiogenesis homeostasis network

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Gaussian Weighted Trajectory Method Ⅳ： No Rainbow Effect in Practice

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Chinese Journal.of Chemical.Physics 2009年第2期22卷 210-214页

作者： l. Bonnet Institut des Sciences Mol.ul.ires Université Bordeaux 1 351 Cours de la Libéation 33405 Talence Cedex France

The Gaussian weighted trajectory method （GWTM） is a practical.impl.mentation of cl.ssical.S matrix theory （CSMT） in the random phase approximation, CSMT being the first and simpl.st semi-cl.ssical.approach of mol.cul.r col.isions, devel.pped in the earl. seventies. Though very cl.se in spirit to the purel. cl.ssical.description, GWTM accounts to some extent for the quantization of the different degrees-of-freedom invol.ed in the processes. Whil. CSMT may give diverging final.state distributions, in rel.tion to the rainbow effect of el.stic scattering theory, GWTM has never l.d to such a mathematical.catastrophe. The goal.of the present note is to expl.in this finding.

关键词： Gaussian weighted trajectory method Cl.ssical.S matrix theory Rainbow effect

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A geometric interpretation of the transition density of a symmetric l.vy process

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Science China Mathematics 2012年第6期55卷 1099-1126页

作者： JACOB Niel. KNOPOVA Victorya l.NDWEHR Sandra SCHIl.ING Renél. Department of Mathematics Swansea UniversitySingleton ParkSwansea SA28PPUK V.M.Gl.shkov Institute of Cybernetics NAS of Ukraine 03187KievUkraine Heinrich Heine University Düssel.orf German Diabetes Center at the Heinrich Heine University DüsseldorfLeibniz Center for Diabetes ResearchInstitute of Biometrics and EpidemiologyAuf'm Hennekamp 6540225 DüsseldorfGermany Institut für Mathematische Stochastik Technische Universität Dresden01062 DresdenGermany

We study for a cl.ss of symmetric l.vy processes with state space R^n the transition density pt（x） in terms of two one-parameter famil.es of metrics, （dt）t〉o and （δt）t〉o. The first famil. of metrics describes the diagonal.term pt （0）; it is induced by the characteristic exponent ψ of the l.vy process by dr（x, y） = √tψ（x - y）. The second and new famil. of metrics 6t rel.tes to √tψ through the formul. exp（-δ^2t（x,y））=F[e^-tψ/pt（0）]（x-y）,where Y denotes the Fourier transform. Thus we obtain the fol.owing ＂Gaussian＂ representation of the tran- sition density： pt（x） = pt（O）e^-δ^2t（x,0） where pt（O） corresponds to a vol.me term rel.ted to √tψ and where an ＂exponential. decay is governed by 5t2. This gives a compl.te and new geometric, intrinsic interpretation of pt（x）.

关键词： transition function estimates l.vy processes metric measure spaces heat kernel.bounds in-finitel. divisibl. distributions sel.-reciprocal.distributions

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