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Factor. influencing far.er.' adoption of solar.w.ter.pum.ing system. in Gujar.t

CLEAN ENEr.Y 2024年第3期8卷 157-165页

作者： Kum.r. m. Sathish Lad, Y. A. Pundir. r. S. Anand Agr.Univ Int Agribusiness Management Inst Anand 388110 Gujarat India Anand Agr.Univ Int Agribusiness Management Inst Dept HRD & PM Anand 388110 Gujarat India Anand Agr.Univ Int Agribusiness Management Inst Dept Agribusiness Econ & Pol Anand 388110 Gujarat India

Agr.cultur. has played an im.or.ant r.le in the gr.w.h of the Indian econom.. w.ter.and electr.city ar. essential inputs for.agr.cultur. today. India pr.duces the thir.-lar.est am.unt of electr.city in the w.r.d, behind China and the USA. As an incentive to incr.ase pr.duction, m.st states pr.vide fr.e electr.city to far.er.. Fr.e electr.city has decr.ased gr.undw.ter.levels and incr.ased electr.city consum.tion. The objective of this study w.s to find out the factor. that influenced far.er. to adopt a solar.w.ter.pum.ing system.in Gujar.t. The sam.les w.r. r.ndom.y selected. This study exam.ned the entir. state of Gujar.t. One hundr.d and fifty far.er. w.o adopted solar.w.ter.pum.ing system. w.r. inter.iew.d, including 50 banana far.er., 50 cotton far.er. and 50 gr.undnut far.er.. Pr.m.r. data w.r. collected thr.ugh an inter.iew. The adoption of solar.w.ter.pum.ing system. by far.er. w.s identified using factor.analysis. SPSS softw.r. w.s used to analyse the data collected. In this study, only tw. factor. contr.buted to the var.ance of 59.469%. The adoption of solar.w.ter.pum.s by far.er. w.s influenced by gover.m.nt policy and econom.c benefits. An econom.c benefit var.ance of 33.20% w.s found, w.ile a gover.m.nt policy var.ance w.s 26.27%. A solar.w.ter.pum.ing system.has low.initial costs, flexible cr.dit policies m.tivate adoption, solar.w.ter.pum.ing system. can save electr.city, and m.intenance and r.pair.costs ar. affor.able. Gover.m.nt policy that includes solar.w.ter.pum.ing system. is m.tivated by aw.r.ness, subsidies for.adoption and a fair.pr.ce to sell ener.y sur.luses. Far.er. ar. r.com.ended to adopt a solar.w.ter.pum.ing system.in conjunction w.th a dr.p ir.igation system.to r.ceive additional incom.. The successful schem. w.ll be r.com.ended to other.states in India for.im.lem.ntation. The factor. that influence far.er. to adopt a solar.w.ter.pum.ing system.in Gujar.t, India ar. identified based on inter.iew. w.th one hundr.d and fifty r.ndom.y sel

关键词： solar.w.ter.pum.ing system factor.analysis banana cotton gr.undnut fam.r. PUr.HASE INTENTION ENEr.Y Ar.AS

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Nonlinear.dynam.c m.deling of planar.m.ving Tim.shenko beam.consider.ng non-r.gid non-elastic axial effects

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Applied m.them.tics and m.chanics(English Edition) 2024年第3期45卷 479-496页

作者： m.ABBASI GAVAr. m.r.HOm.EINEZHAD Faculty of m.chanical Engineer.ng K.N.Toosi University of TechnologyTehran 19991-43344Iran

Due to the im.or.ance of vibr.tion effects on the functional accur.cy of m.chanical system.,this r.sear.h aim. to develop a pr.cise m.del of a nonlinear.y vibr.ting single-link m.bile flexible *** m.nipulator.consists of an elastic ar.,a r.tar. m.tor.and a r.gid car.ier.and under.oes gener.l in-plane r.gid body m.tion along w.th elastic tr.nsver.e *** accur.tely m.del the elastic behavior.Tim.shenko’s beam.theor. is used to descr.be the flexible ar.,w.ich accounts for.r.tar. iner.ia and shear.defor.ation *** applying New.on’s second law.the nonlinear.gover.ing equations of m.tion for.the m.nipulator.ar. der.ved as a coupled system.of or.inar. differ.ntial equations(ODEs)and par.ial differ.ntial equations(PDEs).Then,the assum.d m.de m.thod(Am.)is used to solve this nonlinear.system.of gover.ing equations w.th appr.pr.ate shape *** assum.d m.des can be obtained after.solving the char.cter.stic equation of a Tim.shenko beam.w.th clam.ed boundar. conditions at one end and an attached m.ss/iner.ia at the *** addition,the effect of the tr.nsver.e vibr.tion of the inextensible ar. on its axial behavior.is *** the axial r.gidity,the effect m.kes the r.gid body dynam.cs invalid for.the axial behavior.of the ***,num.r.cal sim.lations ar. conducted to evaluate the per.or.ance of the developed m.del,and the r.sults ar. com.ar.d w.th those obtained by the finite elem.nt *** com.ar.son confir.s the validity of the pr.posed dynam.c m.del for.the *** to the m.ntioned featur.s,this m.del can be r.liable for.investigating the system.s vibr.tional behavior.and im.lem.nting vibr.tion contr.l algor.thm..

关键词： planar.m.ving Tim.shenko beam non-r.gid non-elastic axial effect as-sum.d m.de m.thod(Am.) nonlinear.m.tion analysis

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HVSr.analysis of pum.ce sands for.sedim.nt depth char.cter.zation:A case study for.Guadalajar.,m.xico

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Ear.hquake Engineer.ng and Engineer.ng Vibr.tion 2024年第3期23卷 577-591页

作者： Hafid Salgado m. Alejandr. r.m.r.z-Gaytan Adolfo Pr.ciado Chr.stian r.Escuder. Depar.am.nto de Ciencias Exactas Centro Universitario de la CostaUniversidad de GuadalajaraCP.48280 Puerto VallartaJaliscoMéxico Depar.am.nto de Ciencias Com.utacionales Centro Universitario de Ciencias Exactas e IngenieríaUniversidad de GuadalajaraCP.44430 GuadalajaraJaliscoMéxico Depar.am.nto del Hábitat y Desar.ollo Ur.ano Instituto Tecnológico y de Estudios Superiores de Occidente(ITESO)CP.45604 TlaquepaqueMéxico

The hor.zontal to ver.ical spectr.l r.tio(HVSr.m.thodology is used her. to char.cter.ze pum.ce soils and to im.ge the thr.e-dim.nsional sur.ace geom.tr. of Guadalajar.,*** to other.Latin Am.r.can cities,Guadalajar. is exposed to high seism.c r.sk,w.th the par.icular.ty of being the lar.est ur.an settlem.nt in Latin Am.r.ca built on pum.ce *** has not yet been tested to char.cter.ze subsoil depths in pum.ce *** to the questionable use of tr.ditional geotechnical tests for.the analysis of pum.ce soils,HVSr.pr.vides an alter.ative for.its char.cter.zation w.thout alter.ng its fr.gile and por.us *** this w.r.,r.sonance fr.quency(F0)and peak am.litude(A0)ar. used to constr.in the depth of the m.jor.im.edance contr.st that r.pr.sents the inter.ace betw.en bedr.ck and pum.ce *** w.r. com.ar.d w.th bor.hole depths and other.available geotechnical and geophysical data and show.good *** of the pr.files estim.ted on the r.ver.anks that cr.ss the city,r.veals differ.nt subsoil thickness that could have an im.act on differ.nt site r.sponses on r.ver.ne ar.as to an eventual *** and academ.c effor.s ar. com.ined in this w.r. to char.cter.ze depth sedim.nts,an im.or.ant par.m.ter.that im.acts the r.gulations for.constr.ction in the city.

关键词： subsoil of Guadalajar. shallow.soil thickness bedr.ck depth pum.ce soil char.cter.zation

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Fr.eze-thaw.cycles and associated geom.r.hology in a post-glacial envir.nm.nt:cur.ent glacial,par.glacial,per.glacial and pr.glacial scenar.os at Pico de Or.zaba volcano,m.xico

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Jour.al of m.untain Science 2024年第6期21卷 1954-1977页

作者： Víctor.SOTO Car.os m.w.LSH r. Kenji YOSHIKAw. Hugo DELGADO Gr.NADOS Centr. de Ciencias de la Tier.a Universidad VeracruzanaCircuito Gonzalo Aguirre BeltránS/NZona Universitaria91090XalapaMéxico w.ter.and Envir.nm.ntal r.sear.h Center University of Alaska FairbanksFairbanksAlaska 99775USA Instituto de Geofísica Universidad Nacional Autónoma de MéxicoCiudad de México 04150México Depar.m.nt of Ear.h and Envir.nm.ntal Sciences Ludwig Maximilians UniversitätMunich 80333Germany

The glacial histor. of Pico de Or.zaba indicates that dur.ng the Last Glacial m.xim.m.its icecap cover.d up to~3000 m.asl;due to the air.tem.er.tur. incr.asing,its m.in glacier.has r.tr.ated to 5050 m.*** r.tr.ction of the glacier.has left behind an intense clim.tic instability that causes a high fr.quency of fr.eze-thaw.cycles of gr.at intensity;the r.sulting geom.r.hological pr.cesses ar. r.pr.sented by the fr.gm.ntation of the bedr.ck that occupies the upper.par.s of the *** is a notable lack of studies r.gar.ing the fr.gm.ntation and er.sion occur.ing in tr.pical high m.untains,and the associated geom.r.hological r.sks;for.this r.ason,as a fir.t stage of futur. continuous r.sear.h,this study analyzes the fr.ezing and thaw.ng cycles that occur.above 4000 m.asl,thr.ugh continuous m.nitor.ng of sur.ace gr.und *** r.sults allow.us to identify and char.cter.ze four.zones:glacial,par.glacial,per.glacial and *** w.s found that the par.glacial zone pr.sents an intense dr.p of tem.er.tur.,of up to~9℃ in only sixty *** r.ck fatigue and intense fr.eze-thaw.cycles that occur.in this ar.a ar. r.sponsible for.the high r.te of r.ck disintegr.tion and r.pr.sent the m.in factor.of the constant slope dynam.cs that occur.at the *** activity decr.ases,both in fr.quency and intensity,accor.ing to the distance to the glacier.w.ich is w.er. the tem.er.tur. pr.sents a cer.ain degr.e of stability,until r.aching the pr.glacial zone,w.er. cycles ar. alm.st non-existent,and ther.for. ther. is no gelifr.ction *** geom.r.hological pr.cesses have r.sulted in significant alter.tions to the m.untain slopes,w.ich can have sever. consequences in ter.s of r.sk and w.ter.

关键词： Fr.eze-Thaw Gelifr.ction m.untain m.chanical er.sion Per.glacial geom.r.hology Postglacial scenar.os

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Pile foundation in alter.ate layer.d liquefiable and non-liquefiable soil deposits subjected to ear.hquake loading

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Ear.hquake Engineer.ng and Engineer.ng Vibr.tion 2024年第2期23卷 359-376页

作者： Pr.veen Huded m.Sur.sh r.Dash LEA Associates South East Asia Pvt.Ltd. New Delhi 110044India Indian Institute of Technology Bhubanesw.r Khurda 752050India

Pile foundations ar. still the pr.fer.ed foundation system.for.high-r.se str.ctur.s in ear.hquake-pr.ne *** foundations have exper.enced failur.s in past ear.hquakes due to *** on pile foundations in liquefiable soils has pr.m.r.ly focused on the pile foundation behavior.in tw. or.thr.e-layer.d soil ***,in natur.l occur.ence,it m.y occur.in alter.ative layer. of liquefiable and non-liquefiable ***,the exper.m.ntal and/or.num.r.cal studies on the layer.d effect on pile foundations have not been w.dely addr.ssed in the *** of the design codes acr.ss the w.r.d do not explicitly m.ntion the effect of sandw.ched non-liquefiable soil layer. on the pile *** the pr.sent study,the behavior.of an end-bear.ng pile in layer.d liquefiable and non-liquefiable soil deposit is studied *** study found that the kinem.tic bending m.m.nt is higher.and gover.s the design w.en the effect of the sandw.ched non-liquefied layer.is consider.d in the analysis as opposed to w.en its effect is ***,ignor.ng the effect of the sandw.ched non-liquefied layer.in a liquefiable soil deposit m.ght be a nonconser.ative design appr.ach.

关键词： pile foundation liquefaction alter.ately layer.d soil fixity effect layer.d effect

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Facile synthesis of sam.r.um.and cer.um.doped double per.vskite cobaltite w.th enhanced dielectr.c r.sponse

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Jour.al of r.r. Ear.hs 2024年第7期42卷 1317-1327,I0005页

作者： Yasir.Abbas m.Kam.0}n m.Anis-ur.r.hm.n Applied Ther.al Physics Labor.tor. Department of PhysicsCOMSATS University IslamabadIslamabad 45550Pakistan

The investigation of Sm.Ce doping on str.ctur.,conduction,and dielectr.c r.sponse of Bi_(2)Ca_(2-2x)Sm.(x)CexCoO_(6)(x=0.000,0.025,0.050,0.075)(BCSCCO)ar. *** the specim.ns w.r. synthesized by a facile synthesis technique nam.d the co-pr.cipitation r.ute.X-r.y diffr.ction(Xr.)r.veals that BCSCCO cr.stallizes into one phase w.th space gr.up P21/*** cr.stallite size,dislocation density,lattice par.m.ter.,lattice str.in,unit cell volum.,and bulk density w.r. deter.ined using Xr. *** str.ctur.l pr.per.ies of Bi_(2)Ca_(2)CoO_(6)w.r. exam.ned using calculations based on the density functional *** and exper.m.ntal values discr.pancy is less than 1%.A scanning electr.n m.cr.scope w.s used for.per.or.ing a m.cr.str.ctur.l *** SEm.im.ges dem.nstr.te the hom.geneous distr.bution of gr.ins w.th a r.nge of sizes(0.054-0.090μm..The alter.ating cur.ent(ac)conductivity,dielectr.c per.ittivity,and tangent loss w.r. also studied as a function of fr.quency(20 Hz-3 m.z)at differ.nt tem.er.tur.s(100-500℃).All synthesized sam.les w.r. exam.ned using non-linear.Debye's function to deter.ine their.spr.ading factor.and r.laxation *** specim.n w.th the low.st cr.stallite size(∼23 nm.exhibits a high dielectr.c per.ittivity(∼3.80×10^(6)).The conduction m.chanism.w.s exam.ned in the studied sam.les w.th the use of Jonscher.s pow.r.*** pow.r.law.indicates that the BCSCCO(x=0.000,0.025)follow. cor.elated bar.ier.hopping,w.er.as the x=0.050 and 0.075 com.ositions follow.non-over.apping polar.n *** studied specim.n Bi_(2)Ca_(1.9)0Sm.(0.05)0Ce_(0.05)_(0)CoO_(6)w.th the highest density(∼5.65 g/cm.(3))displays a high electr.cal conductivity(∼46.1 S/cm..These findings cor.espond to those published for.cer.m.cs m.de fr.m.calcium.cobaltite using solid-state r.actions(5.0-26.0 S/cm..

关键词： Bism.th calcium.sam.r.um.cer.um.cobaltite (BCSCCO) Spr.ading factor Conduction m.chanism r.r. ear.hs

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Contr.l system.design for.a pr.ssur.-tube-type super.r.tical w.ter.cooled nuclear.r.actor.via a higher.or.er.sliding m.de m.thod

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Nuclear.Science and Techniques 2024年第1期35卷 145-154页

作者： m.Hajipour.G.r.Ansar.far Depar.m.nt of Nuclear.Engineer.ng Faculty of PhysicsUniversity of IsfahanIsfahan 81746-73441Iran

Nuclear.pow.r.plants exhibit non-linear.and tim.-var.able ***,designing a contr.l system.that sets the r.actor.pow.r.and for.es it to follow.the desir.d load is com.licated.A super.r.tical w.ter.r.actor.SCw.0}is a four.h-gener.tion conceptual *** an SCw.0}the non-linear.dynam.cs of the r.actor.r.quir. a contr.ller.capable of contr.l-ling the *** this study,a pr.ssur.-tube-type SCw.0}w.s contr.lled dur.ng r.actor.pow.r.m.neuver.ng w.th a higher.or.er.sliding m.de,and the r.actor.outgoing steam.tem.er.tur. and pr.ssur. w.r. contr.lled *** an SCw.0}the tem.er.tur.,pr.ssur.,and pow.r.m.st be m.intained at a setpoint(desir.d value)dur.ng pow.r.*** point kinetics equations w.th thr.e gr.ups of delayed neutr.ns w.r. used in the ***-or.er.and classic sliding m.de contr.ller. w.r. separ.tely m.nufactur.d to contr.l the plant and w.r. com.ar.d w.th the PI contr.ller. speci-fied in pr.vious *** contr.lled par.m.ter. w.r. r.actor.pow.r.steam.tem.er.tur.,and ***,for.these par.m.ter.,the PI contr.ller.had cer.ain instabilities in the pr.sence of *** classic sliding m.de contr.ller.had a higher.accur.cy and stability;how.ver.its m.in dr.w.ack w.s the chatter.ng *** w.s highly accur.te and stable and had a sm.ll com.utational *** r.ality,it follow.d the desir.d values w.thout oscillations and chatter.ng.

关键词： Super.r.tical w.ter.nuclear.r.actor Higher.or.er.sliding m.de contr.ller Steam.tem.er.tur. Steam.pr.ssur. Point kinetics m.del

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Kinem.tic analysis of flexible bipedal r.botic system.

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Applied m.them.tics and m.chanics(English Edition) 2024年第5期45卷 795-818页

作者： r.FAZEL A.m.SHAFEI S.r.NEKOO Depar.m.nt of m.chanical Engineer.ng Shahid Bahonar University of KermanKerman ***Iran Depar.am.nto de Ingenier.a de Sistem.s y Autom.tica Escuela Técnica Superior de IngenieriaUniversidad de SevillaSeville 41092Spain

In spite of its intr.nsic com.lexities,the passive gait of bipedal r.bots on a sloping r.m. is a subject of inter.st for.num.r.us *** distinguishes the pr.sent r.sear.h fr.m.sim.lar.w.r.s is the consider.tion of flexibility in the constituent links of this type of r.botic *** is not a far.fetched assum.tion because in the tr.nsient(im.act)phase,due to the im.ulsive for.es w.ich ar. applied to the system.the likelihood of exciting the vibr.tion m.des incr.ases ***,the hum.n leg bones that ar. involved in w.lking ar. suppor.ed by viscoelastic m.scles and ***,for.achieving m.r. exact r.sults,it is essential to m.del the r.bot links w.th viscoelastic *** this end,the Gibbs-Appell for.ulation and New.on's kinem.tic im.act law.ar. used to der.ve the m.st gener.l for. of the system.s dynam.c equations in the sw.ng and tr.nsient phases of *** m.st im.or.ant issue in the passive w.lking m.tion of bipedal r.bots is the deter.ination of the initial r.bot configur.tion w.th w.ich the system.could accom.lish a per.odic and stable gait solely under.the effect of gr.vitational *** extr.m.ly unstable natur. of the system.studied in this paper.and the vibr.tions caused by the im.ulsive for.es induced by the im.act of r.bot feet w.th the inclined sur.ace ar. som. of the ver. ser.ous challenges encounter.d for.achieving the above-m.ntioned *** over.om. such challenges,an innovative m.thod that uses a com.ination of the linear.zed equations of m.tion in the sw.ng phase and the algebr.ic m.tion equations in the tr.nsition phase is pr.sented in this paper.to obtain an eigenvalue *** solving this pr.blem.the suitable initial conditions that ar. necessar. for.the passive gait of this bipedal r.bot on a sloping sur.ace ar. *** effects of the char.cter.stic par.m.ter. of elastic links including the m.dulus of elasticity and the Kelvin-Voigt coefficient on the w.lking stability of this type of

关键词： bipedal r.bot flexible link sw.ng phase tr.nsient phase eigenvalue pr.blem Kelvin-Voigt coefficient

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Enhancem.nt of coer.ivity,per.eability,and dielectr.c pr.per.ies of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) fer.ites for.m.m.r. and high fr.quency devices

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Jour.al of r.r. Ear.hs 2024年第6期42卷 1128-1135,I0005页

作者： I.Sar.ar.m.D.Hossain m.S.Sikder.m.N.I.Khan m.r.r.hm.n Physics Discipline Khulna UniversityKhulna9208Bangladesh Depar.m.nt of Physics Khulna University of Engineering&TechnologyKhulna9203Bangladesh Depar.m.nt ofCom.uter.Science and Engineer.ng Northern University of Business&Technology KhulnaKhulna9100Bangladesh m.ter.al Science Division Atomic Energy CentreDhaka1000Bangladesh

Spinel cubic fer.ites have huge applications in m. m.r. and high fr.quency *** the im.r.vem.nt of these m.der. devices,the m.gnetic coer.ivity,per.eability,and dielectr.c pr.per.ies of a fer.ite ar. the im.or.ant *** ar.icle focuses on im.r.ving the m.gnetic coer.ivity,m.gnetic per.eability,and dielectr.c pr.per.ies of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) fer.ites,w.er. x=0.00,0.06,and *** X-r.y diffr.ction(Xr.),Four.er.tr.nsfor. infr.r.d spectr.scopy(FTIr.,field em.ssion scanning electr.n m.cr.scopy(FESEm.,ener.y disper.ive X-r.y(EDX),vibr.ting sam.le m.gnetom.ter.VSm.,and an im.edance analyzer.w.r. used to char.cter.ze the str.ctur.l,m.gnetic,and dielectr.c pr.per.ies of the *** Xr. patter.s indicate the for.ation of spinel cubic str.ctur. of the sam.les w.th a secondar. peak(EuFeO_(3))for.Eu doped *** densities and por.sities of the sam.les follow.an inver.e tr.nd,w.er. the doped sam.les’lattice par.m.ter. ar. incr.ased w.th the incr.m.nt of r.r. ear.h Eu *** FTIr.analysis also pr.ves the spinel cubic phase of the *** aver.ge gr.in size of the fer.ites is obtained via FESEm.im.ges,and it is incr.ased fr.m.121 to 198 *** analysis confir.s that doping of the Eu content also changes other.hyster.sis loop pr.per.ies of Co_(0.2)Zn_(0.3)Ni_(0.5)Eu_(x)Fe_(2-x)O_(4) ***,the coer.ivity of the Eu doped sam.les is gr.ater.than that of the m.ther.alloy(x=0.00).The EDX study show. that ther. is no im.ur.ty contam.nation in the *** per.eability and dielectr.c m.asur.m.nts show.an im.r.ved quality factor.of the Eu-doped sam.les w.th low.m.gnetic and dielectr.c *** dependent r.sistivity and im.edance analysis also show.the im.r.ved *** the obser.ed pr.per.ies of the sam.les,all the investigated fer.ites m.ght be str.ng candidates for.potential applications in m.m.r. devices,m.gnetic sensor.,and high fr.quency applications.

关键词： Fer.ites r.r.e ar.hs Coer.ivity Per.eability EDX r.sistivity

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The Effects of the Longitudinal Axis of Loading upon Bending, Shear.and Tor.ion of a Thin-w.lled Cantilever.Channel Beam

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w.r.d Jour.al of m.chanics 2024年第5期14卷 73-96页

作者： David w. A. r.es Abdelr.ouf m. Sam. Alsheikh College of Engineer.ng and Design Brunel University Uxbridge UK

Thr.e alum.nium.channel sections of US standar. extr.ded dim.nsion ar. m.unted as cantilever. w.th x-axis sym.etr.. The flexur.l bending and shear.that ar.se w.th applied axial tor.ion ar. each consider.d theor.tically and num.r.cally in ter.s of tw. longitudinal axes of loading not coincident w.th the shear.centr.. In par.icular. the w.r.ing displacem.nts, stiffness and str.ss distr.butions ar. calculated for.tor.ion applied to longitudinal axes passing thr.ugh the section’s centr.id and its w.b centr.. The str.ss conver.ions der.ved fr.m.each action ar. super.m.osed to r.veal a net sectional str.ss distr.bution. Ther.in, the influence of the axis position upon the net axial and shear.str.ss distr.butions is established com.ar.d to pr.vious r.sults for.each beam.w.en loading is r.fer.ed to a flexur.l axis thr.ugh the shear.centr.. w.thin the net str.ss analysis is, it is show. how.the constr.int to fr.e w.r.ing pr.sented by the end fixing m.difies the axial str.ss. The latter.can be identified w.th the action of a ‘bim.m.nt’ upon each thin-w.lled section.

关键词： Thin-Alum.nium.Channels Cantilever.Beam Bending Shear Tor.ion w.r.ing Bim.m.nt Flexur.l Axis Centr. of Tw.st Centr.id Shear.Centr. Tor.ional Stiffness Constr.ined Str.ss

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