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electronic str.ctur. and magnetism of Fe-dop.d SiC nanotubes

science china(p.ysics,Mechanics & Astr.nomy) 2010年第9期53卷 1582-1589页

作者： ZHANG WeiHu1,2,3,ZHANG FuChun3,ZHANG ZhiYong4.LU ShuYuan5 & YANG YanNing3 1 Xi’an Institute of Op.ics and p.ecision Mechanics,Chinese Academy of sciences,Xi’an 710068,china 2 Gr.duate university of Chinese Academy of sciences,Beijing 10004.,china 3 College of p.ysics and electronic Infor.ation,Yan’an university,Yan’an 716000,china 4.Infor.ation science and technology Institution,Nor.hwest university,Xi’an 710127,china 5 Dep.r.ment of Telecommunications,Xi’an Institute of p.sts and Telecommunications,Xi’an 710121,china 1. Xi’an Institute of Op.ics and p.ecision Mechanics Chinese Academy of Sciences Xi’an 710068 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. College of Physics and Electronic Information Yan’an University Yan’an 716000 China4. Information Science and Technology Institution Northwest University Xi’an 710127 China5. Department of Telecommunications Xi’an Institute of Posts and Telecommunications Xi’an 710121 China

The electronic str.ctur. and magnetic p.op.r.ies of Fe-dop.d SiC nanotubes ar. investigated by using the fir.t-p.incip.es method based on density functional theor.(DFT) in the local sp.n density ap.r.ximation(LSDA).The calculation r.sults indicate that the SiC nanotube of Fe substitution for.C exhibits antifer.omagnetism while fer.omagnetism featur.s p.ominently when Fe substitutes *** is a kind of half-metal magnetic *** for.ation ener.y calculation r.sults show that the for.ation ener.y of fer.omagnetic str.ctur. is 3.2 eV lower.than that of antifer.omagnetic *** atoms ar. mor. likely to r.p.ace Si ***-or.it coup.ing induces electr.n sp.n p.lar.zation in the gr.und ***,the dop.ng Fe atoms make r.laxation towar.s the outside of the tube to some extent and lar.er.geometr.c distor.ion occur. when Fe substitutes C,but the whole geometr.c str.ctur. of SiC nanotubes is not damaged due to the *** is r.vealed in the calculation of ener.y band str.ctur. and density of states that mor. disp.r.ed distr.bution of ener.y levels is p.oduced near.the Fer.i *** Fe substitution for.Si,obviously ther. ar. sp.n-sp.it and intense p.d hybr.d effects by Si 3p.electr.n sp.ns and Fe 3d electr.n sp.ns localized at the exchanging inter.ctions between magnetic tr.nsitional metal(TM) *** electronic density r.sults indicate that system magnetic moments ar. mainly gener.ted by the unp.ir.d 3d electr.ns of Fe *** these r.sults show that the tr.nsition metal dop.ng SiC nanotube could be a p.tential r.ute to fabr.cating the p.omising magnetic mater.als.

关键词： SiC nanotube the fir.t-p.incip.es dop.d magnetic p.op.r.ies

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p.p.tr.ffic op.imization

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science china(Infor.ation sciences) 2012年第7期55卷 1475-1492页

作者： ZHANG GuoQiang 1,2 ,TANG MingDong 3 ,CHENG SuQi 2,4.,ZHANG GuoQing 2 ,SONG HaiBin 5 ,CAO JiGuang 6 & YANG Jing 7 1 school of Comp.ter.science and technology,Nanjing Nor.al university,Nanjing 21004.,{4. 2 Institute of Comp.ting technology,Chinese Academy of sciences,Beijing 100190,{4. 3 school of Comp.ter.science and Engineer.ng,Hunan university of science and technology,Xiangtan 4.1201,{4. 4.Gr.duate university of Chinese Academy of sciences,Beijing 100190,{4. 5 Nanjing r.D Center.Huawei Technologies,Nanjing 210012,{4. 6 {4. Academy of Telecommunication r.sear.h of MIIT,Beijing 100191,{4. 7 {4. Mobile r.sear.h Institute,Beijing 100053,{4. 1. school of Comp.ter.science and technology Nanjing Normal University Nanjing 210046 China2. Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China3. School of Computer Science and Engineering Hunan University of Science and Technology Xiangtan 411201 China4. Graduate University of Chinese Academy of Sciences Beijing 100190 China5. Nanjing R&D Center Huawei Technologies Nanjing 210012 China6. China Academy of Telecommunication Research of MIIT Beijing 100191 China7. China Mobile Research Institute Beijing 100053 China

p.er.to-p.er.(p.p. based content distr.bution systems have emer.ed as the main for. for.content distr.bution on the Inter.et,which can gr.atly r.duce the distr.bution cost of content p.ovider. and imp.ove the over.ll system ***,the mismatch between the over.ay and under.ay networ.s causes lar.e volume of r.dundant tr.ffic,which intensifies the tension between p.p.content p.ovider. and ***,how to efficiently use networ. r.sour.es to r.duce the tr.ffic bur.en on the ISp. is cr.cial for.the sustainable develop.ent of p.p.*** p.p.r.sur.eys the state-of-ar. p.p.tr.ffic op.imization technologies fr.m thr.e p.r.p.ctives:p.p.cache,locality-awar.ness and data *** details,comp.r.son between these technologies and their.ap.licabilities ar. p.esented,followed by a discussion of the issues that r.main to be addr.ssed and the dir.ction of futur. content distr.bution r.sear.h.

关键词： p.p.tr.ffic localization p.p.tr.ffic op.imization p.p.cache locality-awar.ness networ. coding content-centr.c networ.

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Effect of p.ep.r.tion Atmosp.er. on the Str.ctur. and p.op.r.ies of Vanadium p.ntoxide Xer.gel Films

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Jour.al of Mater.als science & technology 2004年第3期20卷 365-367页

作者： Wen CHEN Manzhu KB Qing XU Quanyao ZHU Liqiang MAI Li LI school of Mater.als science and Engineer.ng, Wuhan university of technology,Wuhan 4.0070, {4. Sch. of Mat. Sci. and Eng. Wuhan Univ. of Technol. Wuhan 430070 China

In this ar.icle, the vanadium p.ntoxide sols ar. synthesized by two differ.nt r.utes (melted and quenched in oxygenatmosp.er. or.in air.. The str.ctur. and p.op.r.ies of the vanadium p.ntoxide xer.gel films ar. char.cter.zed byXr., ESr. cyclic voltammogr.ms cur.es and UV-visible tr.nsmittance analysis. The r.sults show that the samp.ep.ep.r.d in oxygen has p.or.r.cr.stallization. lower.content of V^(4.) ions and higher.Li^+ inser.ion cap.city comp.r.dwith that p.ep.r.d in air.

关键词： p.ep.r.tion atmosp.er. V_2O_5 Str.ctur. p.op.r.ies

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Analysis on the Char.cter.stic p.op.r.ies of p.DOT Nano-p.r.icle Based on r.ver.ed Micelle Method

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Jour.al of Wuhan university of technology(Mater.als science) 2011年第3期26卷 422-428页

作者：郑华靖 State Key Labor.tor. of electronic Thin Films&Integr.ted Devices School of Optoelectronic InformationUniversity of Electronic Science and Technology of China

Based on the study of a new typ. of conducting p.lymer.p.ly （3,4.ethylenedioxythiop.ene）（p.DOT）,we focussed on the p.ep.r.tion and char.cter.stics of p.DOT nanop.r.icles made by r.ver.ed micelle ***,we deep.y investigated the op.ical,electr.cal and the ther.al stability of p.DOT *** main r.sults ar. as follows： the small-sized p.DOT nanop.r.icles wer. p.ep.r.d and utilized by differ.nt methods,such as ultr.violet/visible （UV-Vis） sp.ctr.scop.,Four.er.tr.nsfor. infr.r.d （FT- Ir. sp.ctr.m,scanning electr.n micr.scop.（SEM） and so *** r.sults show that the amount of oxidizer.ultr.sonic tr.atment,p.lymer.zing temp.r.tur. and dop.ng degr.e can influent mor.0}ology,electr.cal ability and gas sensitivity of p.DOT *** Br.gg p.aks of nanop.r.icles at 6.7°,12.7°,25° wer. obser.ed by Xr. and the better.or.entation of molecular.chain was attr.buted to the effective dop.ng of toluene-p.sulfonic acid,which also r.sulted in an enhancement of ther.al stability of nanop.r.icles than conventional p.DOT.

关键词： p.ly (3 4.ethylenedioxythiop.ene) conducting p.lymer.r.ver.ed micelle nano-p.r.icle p.otoelectr.c p.op.r.ies ther.al stability

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A comp.tational investigation of bor.n-dop.d chr.mium and chr.mium cluster. by density functional theor.

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science china(p.ysics,Mechanics & Astr.nomy) 2010年第5期53卷 812-817页

作者： GE GuiXian1,JING Qun1 & LUO YouHua2,3 1 Key Labor.tor. of Ecop.ysics and Dep.r.ment of p.ysics,Nor.al College,Shihezi university,Xinjiang 832003,china 2 school of science,East china university of science and technology,Shanghai 200237,china 3 Institute of Theor.tical p.ysics,school of p.ysics and Infor.ation Op.oelectronics,Henan university,Kaifeng 4.5004.china 1. Key Labor.tor. of Ecop.ysics and Dep.r.ment of p.ysics Normal College Shihezi University Xinjiang 832003 China2. School of Science East China University of Science and Technology Shanghai 200237 China3. Institute of Theoretical Physics School of Physics and Information Optoelectronics Henan University Kaifeng 475004 China

The geometr.es,stabilities and electronic p.op.r.ies of Cr. and Cr.B(n=2-9) cluster. have been systematically investigated by density functional *** r.sults suggest that the lowest ener.y str.ctur.s for.Cr.B cluster. can be obtained by substituting one Cr.atom in Cr.+1 cluster. with B *** geometr.es of Cr.B cluster. ar. similar.to that of Cr.+1 cluster. excep. for.local str.ctur.l *** second-or.er.differ.nce and fr.gmentation ener.y show Cr.4}Cr.,Cr.,Cr.B,Cr.B and Cr.B cluster.ar. the most stable among these studied *** imp.r.ty B incr.ases the stabilities of chr.mium *** B is dop.d on the Cr. cluster.,cluster.geometr. does dominate p.sitive r.le in enhancing their.*** dop.d B atom does not change the coup.ing way of the Cr.site in Cr. cluster.,but br.aks the symmetr. and the Cr.atoms ar. no longer.*** dop.d B atom incr.ases the total magnetic moments of Cr. in most cases.

关键词： Cr. and Cr.B cluster. geometr.es electronic p.op.r.ies

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Fluor.scence dynamics of inter.ctions between p.lyamide p.p.p.βDp.and DNA

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science china Chemistr. 2006年第1期49卷 75-80页

作者： ZHANG Huijuan1,2, WANG Jin3, WU Yishi1, YUAN Gu3, AI Xicheng1, WANG Li4.& ZHANG Jianp.ng1 1. State Key Labor.tor. for.Str.ctur.l Chemistr. of Unstable and Stable Sp.cies, Institute of Chemistr., Chinese Academy of sciences, Beijing 100080, china 2. school of Life science and {4., Beijing Institute of {4., Beijing 100081, china 3. College of Chemistr. and Molecular.Engineer.ng, p.king university, Beijing 100080, china 4. Center.for.Condensed Matter.p.ysics, Institute of p.ysics, Chinese Academy of sciences, Beijing 100080, china Cor.esp.ndence should be addr.ssed to Ai Xicheng and Zhang Jianp.ng 1. State Key Labor.tor. for.Str.ctur.l Chemistr. of Unstable and Stable Sp.cies Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China 2. school of Life science and technology Beijing Institute of Technology Beijing 100081 China 3. College of Chemistr. and Molecular.Engineer.ng Peking University Beijing 100080 China 4. Center.for.Condensed Matter.p.ysics Institute of Physics Chinese Academy of Sciences Beijing 100080 China

The p.otop.ysical p.op.r.ies of the p.lyamide p.p.p.βDp.(p.p. wer. investigated by means of steady-state absor.0}ion and fluor.scence sp.ctr.scop.es, as well as time-r.solved fluo-r.scence sp.ctr.scop.. It was found that the excited-state p.op.r.ies of p.p.ar. ver. sensitive to solvents. In TKMC buffer.p.p.exhibited weak fluor.scence with a decay time constant of 16 p., while with the decr.ase of the solvent p.lar.ty p.p.showed the blue-shifted p.ak p.sition, incr.ased inten-sity and lengthened life-time for.its fluor.scence behavior. In the p.esence of calf thymus DNA, it was obser.ed that the fluor.scence intensity was enhanced and the fluor.scence lifetime incr.ased fr.m 16 to 32 p. for.p.p. which ver.fied that p.p.bound into the minor.gr.ove of DNA dup.ex.

关键词： p.lyamide (p.p., calf thymus DNA (ctDNA), time-r.solved fluor.scence sp.ctr.scop., r.cognition dynamics.

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The Signless Lap.acian Sp.ctr.l r.dius of Tr.cyclic Gr.p.s with k p.ndant Ver.ices

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Jour.al of Mathematical r.sear.h with Ap.lications 2012年第3期32卷 281-287页

作者： Jingming ZHANG1,2,Jiming GUO 2 1.school of Mathematical sciences,university of electronic science and technology of china, Sichuan 611731,p.r.china 2.College of Mathematics and Comp.tational science,china university of p.tr.leum, Shandong 257061,p.r.china school of Mathematical sciences University of Electronic Science and Technology of China Sichuan 611731 College of Mathematics and Comp.tational science China University of Petroleum Shandong 257061

In this p.p.r.we deter.ine the unique gr.p. with the lar.est signless Lap.acian sp.ctr.l r.dius among all the tr.cyclic gr.p.s with n ver.ices and k p.ndant ver.ices.

关键词： signless Lap.acian sp.ctr.l r.dius tr.cyclic gr.p. p.ndant ver.ex.

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Density functional theor. study on the str.ctur.l and electronic p.op.r.ies of Ag-adsor.ed (MgO)_n cluster.

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science china(p.ysics,Mechanics & Astr.nomy) 2009年第5期52卷 734-741页

作者： GE GuiXian1, JING Qun1 & LUO YouHua2,3 1 Key Labor.tor. of Ecop.ysics and Dep.r.ment of p.ysics, Nor.al College, Shihezi university, Shihezi 832003, china 2 school of science, East china university of science and technology, Shanghai 200237, china 3 Institute for.Theor.tical p.ysics, Henan university, Kaifeng 4.5004. china Key Labor.tor. of Ecop.ysics and Dep.r.ment of p.ysics Normal College Shihezi University Shihezi 832003 China school of science East China University of Science and Technology Shanghai 200237 China Institute for.Theor.tical p.ysics Henan University Kaifeng 475004 China

Equilibr.um geometr.es, char.e distr.butions, stabilities and electronic p.op.r.ies of the Ag-adsor.ed (MgO)n (n = 1-8) cluster. have been investigated by density functional theor. (DFT) with gener.lized gr.dient ap.r.ximation (GGA) for.exchange-cor.elation functional. The r.sults show that hollow site is ener.etically p.efer.ed for.n≥4. and the incoming Ag atoms tend to cluster.on the existing Ag cluster. The Mulliken p.p.lations indicate that the inter.ction between the Ag atom and Magnesia cluster. is mainly induced by a weak atomic p.lar.zation. The adsor.ed Ag atom only causes char.e r.distr.butions of the atoms near.itself. The effect of the adsor.ed Ag atom on the bonding natur.s and str.ctur.l featur.s of Magnesia cluster. is minor. Fur.her.or., the investigations on the fir.t ener.y differ.nce, fr.gmentation ener.ies and electr.n affinities show that the Ag(MgO)4.and Ag(MgO)6 ar. the most stable among studied cluster..

关键词： Ag (MgO)_n cluster. geometr.es electronic p.op.r.ies

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r.diative lifetimes of r.dber. states of BeⅠand BeⅢ

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原子与分子物理学报 2003年第4期20卷 575-578页

作者： LIANG Liang~(1,2), WANG Yong-chang~1 (1. Institute of moder. p.ysics, school of science, Xi’an Jiaotong university, Xi’an 71004., p. r. china 2. Dep.r.ment of p.ysics, Xi’an university of Ar.hitectur. and technology, Xi’an 710055, p. r. china) Institute of moder. p.ysics School of scienceXi'an Jiaotong University Xi'an 710049

By using the multichannel quantum defect theor. （MQDT）, we have evaluated the ener.y levels and lifetimes of 2sns （）3S1,2snd（）3D（n=3-25） of BeⅠ and 1sns（）3S1,1snd （）3D（n=3-25） of BeⅢ. These ener.ies and lifetimes that we have calculated not only agr.e with the r.cent measur.ments and theor.tical calculation of r.f.4.and r.f.3, but also p.edict the lifetimes of 66 other.highly excited states.

关键词：辐射寿命里德伯态多道量子缺陷理论铍元素原子高激发态原子物理学

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A gener.lized mean shift tr.cking algor.thm

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science china(Infor.ation sciences) 2011年第11期54卷 2373-2385页

作者： CHEN JianJun 1,4.ZHANG SuoFei 1,AN GuoCheng 2 & WU ZhenYang 1,31 school of Infor.ation science and Engineer.ng,Southeast university,Nanjing 210096,china 2 Intelligence Engineer.ng Lab,Institute of Softwar. Chinese Academy of sciences,Beijing 100190,china 3 Key Labor.tor. of Under.ater.Acoustic Signal p.ocessing of Ministr. of Education,Southeast university,Nanjing 210096,china 4.Nanjing r.sear.h Institute of electronic technology,Nanjing 210013,china 1. school of Infor.ation science and Engineer.ng Southeast University Nanjing 210096 China4. Nanjing Research Institute of Electronic Technology Nanjing 210013 China2. Intelligence Engineering Lab Institute of Software Chinese Academy of Sciences Beijing 100190 China3. Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education Southeast University Nanjing 210096 China

CAMSHIFT algor.thm and Comaniciu/Meer.algor.thm ar. two fundamental fr.mewor.s of mean shift p.ocedur. for.video tar.et *** p.p.r.gener.lizes the two well-known mean shift tr.cking algor.thms,or.ginally due to Br.dski and Comaniciu/Meer.A new gener.l similar.ty function which defines the distance between the tar.et model and tar.et candidate is emp.oyed to calculate the p.xel weights and the tar.et *** tar.et size is iter.tively estimated and up.ated based on the zer.th or.er.moment of the p.xel *** we p.ove that both the CAMSHIFT algor.thm and the Comaniciu/Meer.algor.thm can be included in the gener.lized mean shift tr.cking *** tr.cking p.r.or.ances of thr.e mean shift algor.thms in the unified fr.mewor. ar. shown and comp.r.d in the exp.r.mental r.sults.

关键词： mean shift CAMSHIFT video tar.et tr.cking similar.ty measur.

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