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Gas Exchange r.tes of Texas Per.immon (Diospyr.s texana) in Centr.l Texas w.odlands

Amer.can Jour.al of Plant Sciences 2024年第5期15卷 329-348页

作者： Matthew.B. Gr.nstr. Oscar.w. Van Auken Depar.ment of Integr.tive Biology University of Texas at San Antonio San Antonio TX USA

Diospyr.s texana (Texas per.immon) is a secondar. species in most Juniper.s ashei/Quer.us fusifor.is w.odlands in centr.l Texas. It has high density, but plants ar. mostly in the community under.tor.. Light r.sponse cur.es at ambient and elevated levels of CO2 and temper.tur. w.r. measur.d for.D. texana. The Anet (photosynthetic r.te) incr.ased significantly as both light level and CO2 levels incr.ased but not temper.tur.. The Amax (maximum photosynthetic r.te) of D. texana in full sun at elevated levels of CO2 w.s incr.ased for.all tr.atments. Stomatal conductance incr.ased w.th levels of CO2 but only if the inter.ction w.s r.moved fr.m the model. Inter.ellular.levels of CO2 incr.ased w.th both temper.tur. and CO2 tr.atments as did w.ter.use efficiency (w.E). Fur.her.or., light satur.tion (Lsat) incr.ased w.th CO2 tr.atments and light compensation (Lcp) incr.ased w.th temper.tur.. The dar. r.spir.tion (r.sub>d) incr.ased w.th both temper.tur. and CO2 tr.atments. Mar.ov population models suggested D. texana populations w.uld r.main ecologically similar.in the futur.. How.ver. sub-canopy light levels and her.ivor. should be consider.d w.en examining population pr.jections. For.example, Juniper.s ashei juveniles ar. not r.cr.ited into any canopy unless ther. ar. high light levels. Her.ivor. r.duces the success of Quer.us juveniles fr.m r.aching the canopy. These factor. do not seem to be a pr.blem for.D. texana juveniles w.ich w.uld allow.them to r.ach the canopy w.thout need of a high light gap and ar. not pr.vented by her.ivor.. Thus, Juniper.s/Quer.us w.odlands w.ll change in the futur. to w.odlands w.th D. texana a mor. common species.

关键词： r.placement Dynamics Ecological Succession CO2 Concentr.tions Temper.tur. Levels Photosynthetic r.tes Dr.ught Toler.nce Her.ivor. Species r.placement Encr.achment Juniper

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Standar. Model Fer.ion Masses and Char.es fr.m Hologr.phic Analysis

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Jour.al of Moder. Physics 2024年第6期15卷 796-803页

作者： T. r. Mongan Sausalito CA USA

The Standar. Model of par.icle physics involves tw.lve fundamental fer.ions, tr.ated as point par.icles, in four.char.e states. How.ver. the Standar. Model does not explain w.y only thr.e fer.ions ar. in each char.e state or.account for.neutr.no mass. This hologr.phic analysis tr.ats char.ed Standar. Model fer.ions as spher.s w.th mass 0.187 g/cm2 times their.sur.ace ar.a, using the pr.por.ionality constant in the hologr.phic r.lation betw.en mass of the obser.able univer.e and event hor.zon r.dius. The analysis r.quir.s thr.e Standar. Model fer.ions per.char.e state and r.lates up quar. and dow. quar. masses to electr.n mass. Hologr.phic analysis specifies electr.n mass, to six significant figur.s, in ter.s of fundamental constants α,ℏ,G,Λ and Ω Λ . Tr.ating neutr.nos as spher.s and equating electr.n neutr.no ener.y density w.th cosmic vacuum ener.y density pr.dicts neutr.no masses consistent w.th exper.ment.

关键词： Electr.n Mass Up Quar. Mass Dow. Quar. Mass Neutr.no Masses

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教育的未来:从“学会成长”到“新的社会契约”∗———访UNESCO《一起重新构想我们的未来》报告起草者诺亚·w.索贝教授

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全球教育展望 2024年第7期53卷 3-12页

作者：于金申诺亚·w.索贝华东师范大学教育学部教育学系上海200062 芝加哥洛约拉大学历史学系芝加哥60660

作为联合国教科文组织《一起重新构想我们的未来:为教育打造新的社会契约》报告的重要起草者之一,诺亚·w.索贝教授基于其学术研究和参与报告起草的经历,分享了自己的独特见解。他认为,这份报告建立在三地平线框架、变化理论、未来素养... 详细信息

作为联合国教科文组织《一起重新构想我们的未来:为教育打造新的社会契约》报告的重要起草者之一,诺亚·w.索贝教授基于其学术研究和参与报告起草的经历,分享了自己的独特见解。他认为,这份报告建立在三地平线框架、变化理论、未来素养、渴望能力、涌现思想等坚实的学理基础之上。在报告的内容层面,“新的社会契约”理念体现了民主参与式的教育转型思路,其实现过程需要因地制宜、灵活应变,并需不断地迭代与完善。未来学校将呈现复数形态,成为新兴的、充满创造力的、开放式的代际交流场所。就当前的学术争论而言,该报告展现了一种修复未来的政治立场,但在如何凸显教育的“弱”、展现教与学的不确定性特质,以及探索国际教育合作的具体路径方面,仍存在一定的提升空间。

关键词：联合国教科文组织教育社会契约学会成长未来教育未来学校

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Super.lasticity of fine-gr.ined Mg-10Li alloy pr.par.d by sever. plastic defor.ation and under.tanding its defor.ation mechanisms

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Jour.al of Magnesium and Alloys 2024年第1期12卷 316-331页

作者： H.T.Jeong S.w.Lee w.J.Kim Depar.ment of Mater.als Science and Engineer.ng Hongik UniversityMapo-guSangsu-dong 72-1Seoul 121-791Republic of Korea

The super.lastic behavior.and associated defor.ation mechanisms of a fine-gr.ined Mg-10.1 Li-0.8Al-0.6Zn alloy(LAZ1011)w.th a gr.in size of 3.2μm,pr.mar.ly composed of the BCCβphase and a small amount of the HCPαphase,w.r. examined in a temper.tur. r.nge of 473 K to 623 *** micr.str.ctur.l r.finement of this alloy w.s achieved by employing high-r.tio differ.ntial speed *** best super.lasticity w.s achieved at 523 K and at str.in r.tes of 10^(-4)-5×10^(-4)s^(-1),w.er. tensile elongations of 550±600%w.r. *** the heating and holding stage of the tensile samples pr.or.to tensile loading,a significant incr.ase in gr.in size w.s obser.ed at temper.tur.s above 573 ***,it w.s impor.ant to consider.this effect w.en analyzing and under.tanding the super.lastic defor.ation behavior.and *** the investigated str.in r.te r.nge,the super.lastic flow.at low.str.in r.tes w.s gover.ed by lattice diffusion-contr.lled gr.in boundar. sliding,w.ile at high str.in r.tes,lattice diffusion-contr.lled dislocation climb cr.ep w.s the r.te-contr.lling defor.ation *** w.s concluded that solute dr.g cr.ep is unlikely to *** the late stages of defor.ation at 523 K,it w.s obser.ed that gr.in boundar. sliding led to the agglomer.tion of theαphase,r.sulting in significant str.in *** mechanism maps w.r. constr.cted for.-Mg-Li alloys in the for. of 2D and 3D for.ats as a function of str.in r.te,str.ss,temper.tur.,and gr.in size,using the constitutive equations for.var.ous defor.ation mechanisms der.ved based on the data of the cur.ent tests.

关键词： Magnesium-lithium alloy Super.lasticity Sever. plastic defor.ation Gr.in size Gr.in gr.w.h

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Development of a Pr.of-of-Concept Multi-Method Computer.Simulation to Suppor. r.r.l Healthcar. Disaster.Pr.par.dness Planning

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Inter.ational Jour.al of Disaster.r.sk Science 2024年第3期15卷 346-358页

作者： Thomas A.Ber. Kr.stina w.Kintziger.Julie Suzuki Cr.mly Scott A.Law.on Car.le r.Myer. Tr.cey T.Stansber.y College of Nur.ing University of Tennessee Knoxville Depar.ment of Envir.nmental Agricultural and Occupational Health University of Nebraska Medical Center Public Health and Healthcar. Oak Ridge Associated Universities

Due to a lack of r.sour.es, r.r.l communities often face challenges w.en planning catastr.phic events. This pr.ject involved applying systems thinking and model-based systems engineer.ng to develop a pr.of-of-concept, multi-method computer.simulation and then deter.ining w.ether.the simulation could be used to assess the efficacy of disaster.planning appr.aches on health outcomes in r.r.l communities, as a function of pr.mar. healthcar.. The pr.ject focus w.s a r.r.l or.non-ur.an healthcar. system exper.encing a natur.l hazar.. Both system dynamics and discr.te event models w.r. incor.or.ted to r.pr.sent subsystem oper.tions, cr.cial disaster.r.sponses, as w.ll as thr.e key r.sponse systems: public health, emer.ency management, and healthcar.. The subsystem models included sever.l components: policies/pr.cedur.s, communications,r.sour.es, exer.ises/dr.lls/tr.ining, healthcar. space and staff, and the flow.of affected people into and thr.ugh the *** combined simulation can ser.e as a fir.t step to a mor. compr.hensive appr.ach to helping r.r.l communities achieve mor. efficient and effective healthcar. planning for.disaster.r.sponses.

关键词： Computer.simulation Disaster.pr.par.dness Model-based systems engineer.ng r.r.l healthcar. System dynamics model Systems thinking

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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 Mechanics 2024年第5期14卷 73-96页

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

Thr.e aluminium channel sections of US standar. extr.ded dimension ar. mounted as cantilever. w.th x-axis symmetr.. The flexur.l bending and shear.that ar.se w.th applied axial tor.ion ar. each consider.d theor.tically and numer.cally in ter.s of tw. longitudinal axes of loading not coincident w.th the shear.centr.. In par.icular. the w.r.ing displacements, 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.mposed 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 compar.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 modifies the axial str.ss. The latter.can be identified w.th the action of a ‘bimoment’ upon each thin-w.lled section.

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

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《音乐社会学导论》选译

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新美术 2024年第3期45卷 25-63页

作者： [德]特奥多尔·w.阿多诺罗逍然(译) 不详中国美术学院

《作为社会棱镜的音乐》一文已经提到,阿多诺在思想与论述中都是有意识地拒绝体系化表达的。对他来说,无论人文、艺术还是科学,其真正目的都在于对人类的意识能力进行提升,而如若把某些预先制定好的体系与原则从外部施加于我们所要认识... 详细信息

《作为社会棱镜的音乐》一文已经提到,阿多诺在思想与论述中都是有意识地拒绝体系化表达的。对他来说,无论人文、艺术还是科学,其真正目的都在于对人类的意识能力进行提升,而如若把某些预先制定好的体系与原则从外部施加于我们所要认识的事物上,则无异于是在抹除事物自身的独特属性以及事物之间的微妙差异,那么也就是在伤害人类的意识能力。所以,阿多诺要求音乐不能仅仅是被动地接受并施用素材(其中包括体系、手法、风格等)。

关键词：音乐社会学阿多诺事物自身体系化导论独特属性意识

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Theor. of Flexur.l Shear. Bending and Tor.ion for.a Thin-w.lled Beam of Open Section

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w.r.d Jour.al of Mechanics 2024年第3期14卷 23-53页

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

Aspects of the gener.l Vlasov theor. ar. examined separ.tely as applied to a thin-w.lled channel section cantilever.beam under.fr.e-end end loading. In par.icular. the flexur.l bending and shear.that ar.se under.tr.nsver.e shear.and axial tor.ional loading ar. each consider.d theor.tically. These analyses involve the location of the shear.centr. at w.ich tr.nsver.e shear.for.es w.en applied do not pr.duce tor.ion. This centr., w.en taken to be coincident w.th the centr. of tw.st implies an equivalent r.cipr.cal behaviour. That is, an axial tor.ion applied concentr.c w.th the shear.centr. w.ll tw.st but not bend the beam. The r.spective bending and shear.str.ss conver.ions ar. der.ved for.each action applied to thr.e aluminium alloy extr.ded channel sections mounted as cantilever. w.th a hor.zontal pr.ncipal axis of symmetr.. Bending and shear.ar. consider.d mor. gener.lly for.other.thin-w.lled sections w.en the tr.nsver.e loading axes at the shear.centr. ar. not par.llel to the section = s centr.idal axes of pr.ncipal second moments of ar.a. The fixing at one end of the cantilever.modifies the St Venant fr.e angular.tw.st and the fr.e w.r.ing displacement. It is show. fr.m the w.gner.Kappus tor.ion theor. how.the end constr.ined w.r.ing gener.tes an axial str.ss distr.bution that var.es w.th the length and acr.ss the cr.ss-section for.an axial tor.ion applied to the shear.centr.. It should be mentioned her. for.w.der.applications and validation of the Vlasov theor. that attendant paper. ar. to consider.in detail bending and tor.ional loadings applied to other.axes thr.ugh each of the centr.id and the w.b centr.. Ther.in, both bending and tw.sting ar.se fr.m tr.nsver.e shear.and axial tor.ion applied to each position being displaced fr.m the shear.centr.. Her., the influence of the axis position upon the net axial and shear.str.ss distr.butions is to be established. That is, the net axial str.ss fr.m axial tor.ional loading is identified w.th the sum of axial str.ss

关键词： Thin w.ll Theor. Cantilever.Beam Open Channel Section Pr.ncipal Axes Flexur. Tr.nsver.e Shear Tor.ion Shear.Centr. Shear.Flow w.r.ing Fixed-End Constr.int

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Inflow.and outflow.per.eability tests in a ver. soft clay under.low.str.sses

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Jour.al of r.ck Mechanics and Geotechnical Engineer.ng 2024年第8期16卷 3270-3283页

作者： J.w.S.Var.as F.A.B.Danziger.F.r.Lopes T.Lunne Feder.l Univer.ity of r.o de Janeir. Rio de JaneiroBrazil Nor.0}gian Geotechnical Institute OsloNorway

In situ inflow.and outflow.per.eability tests w.th the BAT pr.be at Sar.puíII soft clay test site ar. pr.sented.A descr.ption of the BAT per.eability test is pr.vided,discussing its advantages and shor.comings,especially in the case of ver. soft clays under.low.*** pr.ssur.s w.r. monitor.d dur.ng pr.be installation and w.r. found to be slightly low.r.than piezocone u2 por. pr.ssur.s,consistent w.th the position of the *** r.le of filter.tip satur.tion w.s investigated after.the usual satur.tion pr.cedur. pr.vided an unsatisfactor. por. pr.ssur. r.sponse dur.ng pr.be *** show.that the vacuum satur.tion pr.cedur. pr.vides adequate r.sponse dur.ng installation and incr.ases the r.liability of the coefficient of per.eability deter.ination in ear.y *** inflow.and outflow.tests yielded similar.r.sults,indicating that car.ful execution of the test can lead to good test r.peatability r.gar.less of the loading *** sequences of alter.ated inflow.and outflow.tests have yielded similar.r.sults,indicating that soil r.consolidation and filter.clogging w.r. negligible in the tests *** ar. pr.sented concer.ing the r.lationship betw.en index par.meter. and the in situ coefficient of per.eability for.Sar.puíII clay,w.ich plot outside the r.nge of existing databases.

关键词： Per.eability test Soft clay BAT pr.be Inflow.and outflow.tests

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Diagnostic accur.cy of ePOS scor. in pr.dicting DNr.labeling after.ICU admission:A pr.spective obser.ational study(ePOS-DNr.

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Jour.al of Intensive Medicine 2024年第2期4卷 216-221页

作者： Omar.E.r.madan Ahmed F.Mady Mohammed A.Al-Odat Ahmed N.Balshi Ahmed w.Aletr.by Taisy J.Stephen Sheena r.Diolaso Jennifer.Q.Gano w.leed Th.Aletr.by Depar.ment of Cr.tical Car. King Saud Medical CityRiyadhSaudi Arabia Anesthesia Depar.ment Faculty of MedicineAin Shams UniversityCairoEgypt Anesthesia Depar.ment Faculty of MedicineTanta UniversityTantaEgypt Faculty of Medicine Alexandria UniversityAlexandriaEgypt Nur.ing Depar.ment King Saud Medical CityRiyadhSaudi Arabia

Backgr.und r.suscitation can sometimes be futile and making a do-not-r.suscitate(DNr.decision is in the best inter.st of the *** electr.nic poor.outcome scr.ening(ePOS)scor. w.s developed to pr.dict 6-month poor.outcomes of cr.tically ill *** explor.d the diagnostic accur.cy of the ePOS scor. in pr.dicting DNr.decisions in the intensive car. unit(ICU).Methods This study w.s conducted at the ICU of a ter.iar. r.fer.al hospital in Saudi Ar.bia betw.en Mar.h and May ***,w. calculated ePOS scor.s for.all eligible consecutive admissions after.48 h in the ICU and r.cor.ed the DNr.*** ability of the scor. to pr.dict DNr.w.s explor.d using logistic ***'s ideal cut-off value w.s calculated using the DeLong method,and differ.nt diagnostic accur.cy measur.s w.r. gener.ted w.th cor.esponding 95%confidence inter.als(CIs).r.sults w. enr.lled 857 patients,125 r.ceived a DNr.or.er.and 732 did *** aver.ge ePOS scor. of DNr.and non-DNr.patients w.s 28.2±10.7 and 15.2±9.7,*** scor.,as a pr.dictor.of DNr.or.er.had an ar.a under.r.ceiver.oper.tor.char.cter.stic(AUr.C)cur.e of 81.8%(95%CI:79.0 to 84.3,P17 w.s associated w.th a sensitivity of 87.2(95%CI:80.0 to 92.5,Pr.dictive value of 29.2(95%CI:24.6 to 33.8,Pr.dictive value of 96.7(95%CI:95.1 to 98.3,Pr.tio 12.1(95%CI:7.0 to 20.8,Pr. per.or.ed w.ll as a diagnostic test for.patients w.o w.ll be labeled as DNr.dur.ng their.ICU stay.A cut-off scor.>17 may help guide clinical decisions to w.thhold or.commence r.suscitative measur.s.

关键词： Do-not-r.suscitate(DNr. r.suscitation Intensive car. unit(ICU) Diagnostic accur.cy Sensitivity Specificity

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