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Coupled Perturbed Modes over Slopi.g Penetrable Bottom

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Chi.ese Physi.s Letters 2017年第7期34卷 126-129页

作者： Fei.Long Zhu Eri. i. Thorsos Feng-Hua Li State Key Laboratory of Acousti.s Institute of Acoustics Chinese Academy of Sciences Beijing 100190 Uni.ersi.y of Chi.ese Academy of Sci.nces Beijing 100049 Appli.d Physi.s Laboratory University of Washington WA 98105 USA

i. envi.onments wi.h water depth vari.ti.ns, one-way modal soluti.ns i.volve mode coupli.g. Hi.ham and Ti.dle developed an accurate and fast approach usi.g perturbati.n theory to locally determi.e the change i. mode functi.ns at steps. The method of Hi.ham and Ti.dle i. li.i.ed to low frequency （≤250 Hz）. We extend the coupled perturbati.n method, thus i. can be appli.d to hi.her frequenci.s. The approach i. descri.ed and some examples are gi.en.

关键词： Coupled Perturbed Modes over Slopi.g Penetrable Bottom

i.vesti.ati.n on the mechani.al properti.s of si.tered porous copper compacts

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Chi.a Parti.uology 2007年第6期5卷 391-394页

作者： Yasser M.Z. Ahmed Mohamed i. Ri.d Ahmed i. Zaky Mohammed Abdel-Azi. Mohamed M.H. Shalabi Central Metallurgi.al Research and Development i.sti.ute CMRDI El-Felzat Street El-Tabbin P.O. Box 87 Helwan Cairo Egypt

i. li.e wi.h recent attenti.n on porous metals havi.g low and medi.m porosi.i.s i. the range of 20-50%, thi. paper studi.s the effect of porosi.y on the mechani.al properti.s of si.tered copper compacts. Experi.ents were desi.ned to i.vesti.ate the effect of porosi.y, appli.d stress and sli.i.g veloci.y on the wear rate of copper compacts, leadi.g to the fi.di.g that the effects of both porosi.y and appli.d stress of the wear test on the wear rate are approxi.ately si.i.ar and hi.her than that of sli.i.g veloci.y. The i.vesti.ati.n concerni.g the effect of porosi.y on compressi.e strength i.di.ated that the stress-strai. curve of hi.h-porosi.y compact exhi.i.ed i.enti.i.ble ulti.ate strength poi.ts, though low-porosi.y compact showed di.ti.ct stages of elasti. plasti. behavi.r.

关键词： Porous copper Wear rate Compressi.e strength Experi.ental desi.n techni.ue

An i.telli.ent Agent Approach to Adapti.e Project Management

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Tsi.ghua Sci.nce and Technology 2008年第S1期13卷 121-125页

作者： i. Ourdev S. AbouRi.k Hole School of Constructi.n Department of Civil and Environmental Engineering

Thi. paper presents the i.i.i.l steps to i.tegrati.g a di.tri.uted di.crete event si.ulati.n system wi.h a framework for i.telli.ent software agents. The resulti.g system has a si.ulati.n component that i. based on the hi.h-level archi.ecture (HLA) and an agent component that i.plements the beli.f-desi.e-i.tenti.n (BDi. approach to agent modelli.g. The archi.ecture i. connected to a real-ti.e i.formati.n source. The framework was successfully appli.d to a real-li.e moni.ori.g system for a tunnel-bori.g machi.e excavati.n project that helped wi.h forecasti.g and managi.g the project ti.eli.es i. response to the changes i. the uncertai. excavati.n envi.onment. Thi. project i. presented as a test case and demonstrates encouragi.g results for i.tegrati.e modelli.g of large-scale problems wi.h elements of uncertai.ty.

关键词： i.telli.ent agents adapti.e project management beli.f-desi.e-i.tenti.n (BDi. hi.h-level archi.ecture (HLA) excavati.n project di.crete event si.ulati.n Bayesi.n modelli.g uncertai.ty

The role of Eph receptors i. lens functi.n and di.ease

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Sci.nce Chi.a(Li.e Sci.nces) 2012年第5期55卷 434-443页

作者： SON Alexander i. PARK Jeong Eun Department of Chemi.al Bi.logy Ernest Mario School of PharmacyRutgersThe State University of New Jersey

Cataract i. the si.gle largest contri.utor to bli.dness i. the world,wi.h the di.ease havi.g a strong geneti. *** recent years the Eph fami.y of receptor tyrosi.e ki.ases has been i.enti.i.d as a key regulator i. lens... 详细信息

关键词： cataract lens EphA2 ephri.-A5

ARCHi.ECTURE AND i.S i.PLEMENTATi.N FOR ROBOTS TO NAVi.ATE i. UNKNOWN i.DOOR ENVi.ONMENTS

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Chi.ese Journal of Mechani.al Engi.eeri.g 2005年第3期18卷 366-370页

作者： Li.Wenfeng Chri.tensen i. Henri. Oreback Anders College of Logi.ti.s Engi.eeri.g Wuhan University of Technology Wuhan 430063 China Centre for Autonomous Systems Royal Institute of Technology SE-100 44 Stockholm Sweden

i. i. di.cussed wi.h the desi.n and i.plementati.n of an archi.ecture for a mobi.e robot to navi.ate i. dynami. and anknown i.door envi.onments. The archi.ecture i. based on the framework of Open Robot Control Software at KTH （OROCOS@KTH）, whi.h i. also di.cussed and evaluated to navi.ate i.door effi.i.ntly, a new algori.hm named door-li.e-exi. detecti.n i. proposed whi.h employs 2D feature oft. door and extracts key poi.ts of pathway from the raw data of a laser scanner. As a hybri. archi.ecture, i. i. decomposed i.to several basi. components whi.h can be classi.i.d as ei.her deli.erati.e or reacti.e. Each component can concurrently execute and communi.ate wi.h another. i. i. expansi.le and transferable and i.s components are reusable.

关键词： i.door navi.ati.n Archi.ecture Framework Component Mobi.e robots

Hybri.i.ati.n and genome evoluti.n i. The role of conti.gency duri.g hybri. speci.ti.n

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Current Zoology 2013年第5期59卷 667-674页

作者： Fabri.e EROUKHMANOFF Ri.hard i. BAi.EY Glenn-PETER SaeTRE Centre for Ecologi.al and Evoluti.nary Synthesi. (CEES) Department of Biology University of Oslo Norway

Homoploi. hybri. speci.ti.n （HHS） i.volves the recombi.ati.n of two di.ferenti.ted genomes i.to a novel, func- ti.nal one wi.hout a change i. chromosome number. Theoreti.ally, there are numerous ways for two parental genomes to recom- bi.e. Hence, chance may play a large role i. the formati.n of a hybri. speci.s. i. these genome combi.ati.ns can evolve rapi.ly followi.g hybri.i.ati.n and sympatri. si.uati.ns are numerous, recurrent homoploi. hybri. speci.ti.n i. a possi.i.i.y. We argue that three di.ferent, but not mutually exclusi.e, types of conti.genci.s could i.fluence thi. process. Fi.st, many of these ＂hopeful monsters＂ of recombi.ant parent genotypes would li.ely have low fi.ness. Only speci.i. combi.ati.ns of parental genomi. con- tri.uti.ns may produce vi.ble, i.tra-ferti.e hybri. speci.s able to accommodate potenti.l constrai.ts ari.i.g from i.tragenomi. confli.t. Second, ecologi.al condi.i.ns （competi.i.n, geography of the contact zones or the i.i.i.l frequency of both parent spe- ci.s） mi.ht favor di.ferent outcomes rangi.g from sympatri. coexi.tence to the formati.n of hybri. swarms and ulti.ately hybri. speci.ti.n. Fi.ally, hi.tory may also play an i.portant role i. promoti.g or constrai.i.g recurrent HHS i. multi.le hybri.i.ati.n events occur sequenti.lly and parental di.ergence or i.olati.n di.fers along thi. conti.uum. We di.cuss under whi.h condi.i.ns HHS may occur multi.le ti.es i. parallel and to what extent recombi.ati.n and selecti.n may fuse the parent genomes i. the same or di.ferent ways. We conclude by exami.i.g di.ferent approaches that mi.ht help to solve thi. i.tri.ui.g evoluti.nary puz- zle [Current Zoology 59 （5）： 667-674, 2013].

关键词： Di.ensi.nali.y Geneti. Mosai.i.m Hybri.i.ati.n Speci.ti.n

Hybri.i.ati.n and genome evoluti.n i.： Mechani.ms of speci.s di.ergence and thei. effects on evoluti.n i. hybri.s

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Current Zoology 2013年第5期59卷 675-685页

作者： Ri.hard i. BAi.EY Fabri.e EROUKHMANOFF Glenn-PETER SaeTRE Centre for Ecologi.al and Evoluti.nary Synthesi. (CEES) Department of Biology University of Oslo Norway

Recent genomi. studi.s have hi.hli.hted the i.portance of hybri.i.ati.n and gene exchange i. evoluti.n. We ask what factors cause vari.ti.n i. the i.pact of hybri.i.ati.n, through adaptati.n i. hybri.s and the li.eli.ood of hybri. speci.ti.n. Duri.g speci.ti.n, trai.s that di.erge due to both di.ergent and stabi.i.i.g selecti.n can contri.ute to the bui.dup of reproducti.e i.olati.n. Di.ergent di.ecti.nal selecti.n i. parent taxa should lead to i.termedi.te phenotypes i. hybri.s, whereas stabi.i.i.g se- lecti.n can also produce extreme, transgressi.e phenotypes when hybri.i.ati.n occurs. By exami.i.g exi.ti.g theory and em- pi.i.al data, we di.cuss how these effects, combi.ed wi.h di.ferences between modes of di.ergence i. the chromosomal di.tri.u- ti.n of i.compati.i.i.i.s, affect adaptati.n and speci.ti.n i. hybri. populati.ns. The result i. a clear and testable set of predi.- ti.ns that can be used to exami.e hybri. adaptati.n and speci.ti.n. Stabi.i.i.g selecti.n i. parents i.creases transgressi.n i. hy- bri.s, i.creasi.g the possi.i.i.y for novel adaptati.n. Di.ergent di.ecti.nal selecti.n causes i.termedi.te hybri. phenotypes and i.creases thei. abi.i.y to evolve along the di.ecti.n of parental di.ferenti.ti.n. Stabi.i.i.g selecti.n bi.ses i.compati.i.i.i.s to- wards autosomes, leadi.g to reduced sexual correlati.ns i. trai. values and reduced plei.tropy i. hybri.s, and hence i.creased freedom i. the di.ecti.n of evoluti.n. Di.ecti.nal selecti.n causes a bi.s towards sex-li.ked i.compati.i.i.i.s, wi.h the opposi.e consequences. Di.ergence by di.ecti.nal selecti.n leads to greater domi.ance effects than stabi.i.i.g selecti.n, wi.h major but vari.ble i.pacts on hybri. evoluti.n [Current Zoology 59 （5）： 675-685, 2013].

关键词： Evolvabi.i.y Constrai.ts Di.ensi.nali.y Hybri. Adaptati.n

Use of Senti.el-1 i.agery for flood management i. a reservoi.-regulated ri.er basi.

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Fronti.rs of Earth Sci.nce 2018年第3期12卷 506-520页

作者： T. PERROU A. GAR/OUD i. PARCHARi.i. Department of Geography Harokopio University of Athens Athens Greece European Space Agency/ESRi. Frascati Rome Italy Department of Geography University Paris Diderot Paris France

Flood hazard moni.ori.g and mappi.g i. of great i.portance because i. represents a si.ni.i.ant contri.uti.n to ri.k management. The present study i.vesti.ated the flood event that occurred downstream from the transboundary Strymon Ri.er basi., more speci.i.ally at Serres basi.-a reservoi.-regulated basi., i. the begi.ni.g of 2015. The focus of thi. study was to better understand the spati.-temporal dynami. of the flood and the causes that i.i.i.ted the hazard. Wi.hi. the Serres basi., the Strymon transboundary ri.er outflows to Lake Kerki.i. whi.h regulates water flow downstream for i.ri.ati.n purposes and flood protecti.n. For thi. research, a dataset of Senti.el-1 SAR GRD i.ages was collected and processed coveri.g the peri.d of October 2014-October 2015 to i.vesti.ate the water level changes i. Lake Kerki.i. Based on SAR i.ages, bi.ary water/non-water products and multi.emporal RGB ampli.ude i.ages were generated and i.terpreted. Senti.el-1 products have proved to be an effecti.e tool on flood hazard dynami. extensi.n mappi.g and esti.ati.n of water extent bodi.s retai.ed by small reservoi.s. i. agreement wi.h hydro-meteorologi.al data and the hi.h-resoluti.n DEM, i. was concei.ed that the flood event occurred due to the water volume flowi.g from upstream i. the reservoi. and the large amount of water drai.i.g from the tri.utari.s i.to nearby sub-basi.s. Moreover, i.effi.i.nt water management of the overwhelmi.g water flow through the dam could further strengthen the flood event. The proposed approach, whi.h i. enti.ely based on open access remotely sensed data and processi.g tools, could be i.plemented i. the same area for past flood events to produce archi.e retrospecti.e data, as well as i. other si.i.ar reservoi.-regulated ri.er basi.s i. terms of water management and flood ri.k management.

关键词： flood mappi.g Senti.el-1 SAR bi.ary i.ages multi.emporal i.age ri.er basi.

Charged parti.le propagati.n through nanostructures and associ.ted radi.ti.n

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Nuclear Sci.nce and Techni.ues 2004年第2期15卷 65-85页

作者： N.K. ZHEVAGO V. i. GLEBOV i.sti.ute of Hi.h Technology i. Experi.ental Machi.ery Russian Research Centre "Kurchatov Institute" Moscow 123182 RussiaInstitute of High Technology in Experimental MachineryRussian Research Centre "Kurchatov Institute" Moscow 123182 Russia

i. thi. report, usi.g computer si.ulati.ns, we i.vesti.ate the channeli.g of hi.h-energy charged parti. cles i. nanotube ropes and fulleri.es and esti.ate the capabi.i.y of bent nanocrystals to deflect a parti.le beam. We also di.cuss electromagneti. radi.ti.n ari.i.g both from the non-uni.orm moti.n of the parti.les i. the electrostati. potenti.l of ali.ned atoms and from the transi.nt polari.ati.n of the medi.m caused by the parti.les.

关键词：纳米结构带电粒子传播方式计算机仿真电磁辐射瞬时偏振固体物理学沟道效应