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Measurement of the integrated Luminosities of c.oss-sec.ion sc.n data samples around theψ(3770)mass region

c.inese Physic. c 2018年第6期42卷 1-8页

作者： M. Ablikim M. N. Ac.asov S. Ahmed M. Albrec.t M. Alekseev A. Amoroso F. F. An Q. An Y. Bai O. Bakina R. Baldini Ferroli Y. Ban K. Begzsuren D. W. Bennett J. V. Bennett N. Berger M. Bertani D. Bettoni F. Bianc.i E. Boger I. Boyko R. A. Briere H. c.i x. c.i O. c.kir A. c.lc.terra G. F. c.o S. A. c.tin J. c.ai J. F. c.ang W. L. c.ang G. c.elkov G. c.en H. S. c.en J. c. c.en M. L. c.en P. L. c.en S. J. c.en x. R. c.en Y. B. c.en x. K. c.u G. c.binetto F. c.ssio H. a. Dai, J. F. Dai A. Dbeyssi D. Dedovic. Z. Y. Deng A. Denig I. Denysenko M. Destefanis F. De Mori Y. Ding c. Dong J. Dong L. Y. Dong M. Y. Dong Z. L. Dou S. x. Du P. F. nuan J. Fang S. S. Fang Y. Fang R. Farinelli L. Fava S. Fegan F. Feldbauer G. Felic. c. Q. Feng E. Fioravanti M. Fritsc. c. D. Fu Q. Gao x. L. Gao Y. Gao, Y. G. Gao Z. Gao B. Garillon I. Garzia A. Gilman K. Goetzen L. Gong W. x. Gong W. Gradl M. Grec. L. M. Gu M. H. Gu Y. T. Gu A. q. Guo L. B. Guo R. P. Guo Y. F. Guo A. Guskov Z. Haddadi S. Han x. Q. Hao F. A. Harris Z. L. He x. O. He F. H. Heinsius T. Held Y. K. Heng T. Holtmann Z. L. Hou H. M. Hu J. F. gu T. Hu Y. Hu G. S. Huang J. S. Huang x. T. Huang x. Z. Huang Z. L. guang T. Hussain W. Ikegami Andersson M Irshad Q. Ji Q. P. Ji x. B. Ji x. L. Ji x. S. Jiang x. Y. Jiang J. B. Jiao Z. Jiao D. P. Jin S. Jin Y. Jin T. Johansson A. Julin N. Kalantar-Nayestanaki x. S. Kang M. Kavatsyuk B. c. Ke T. Khan A. Khoukaz P. Kiese R. Kliemt L. Koc. O. B. Kolc. B. Kopf M. Kornic.r M. Kuemmel M. Kuessner A. Kupsc.M. Kurth W. Kiihn J. S. Lange M. Lara P. Larin L. Lavezzi S. Leiber H. Leithofi c. Li c.eng Li D. M. Li F. Li F. Y. Li G. Li H. B. Li H. J. Li J. c. Li J. W. Li K. J. Li Kang Li Ke Li Lei Li P. L. Li P. R. Li Q. Y. Li T. Li W. D. Li W. G. Li x. L. Li x. N. Li x. Q. Li Z. B. Li H. Liang Y. F. Liang Y. T. Liang G. R. Liao L. Z. Liao J. Libby c. x. lin D. x. lin S. Liu B. J. Liu c. x. Liu D. Liu D. Y. Liu F. H. Liu Fang Liu Feng Liu H. B. Liu H. L Liu H. M. Liu Huanhuan Liu Huihui Liu J. B. Liu J. Y. Liu K. Liu K. Y. Liu Ke Liu L. D. Liu Q. Liu S B. Y. Zhang144 C. C. Zhang1D. H. Zhang1 H. H. Zhang45H. Y. Zhang144 J. Zhang151 J. L. Zhang65 J. Q. Zhang4 J. W. Zhang1 J. Y. Zhang1 J. Z. Zhang151 K. Zhang151 L. Zhang46 S. F. Zhang35 T. J. Zhang3975 X. Y. Zhang38 Y. Zhang4457 Y. H. Zhang144 Y. T. Zhang4557 Yang Zhang1 Yao Zhang1 Yu Zhang51 Z. H. Zhang6 Z. P. Zhan57Z. Y. Zhang64 G. Zhao1J. W. Zhao144 J. Y. Zhao151 J. Z. Zhao144 Lei Zhao4457 Ling Zhao1 M. G. Zhao35 Q. Zhao1 S. J. Zhao67 T. C. Zhao1 Y. B. Zhao144 Z. G. Zhao4457 A. Zhemehugov2869 B. Zheng58J. P. Zheng144 W. J. Zheng38 Y. H. Zheng51B. Zhong33 L. Zhou144 Q. Zhou151 X. Zhou64 X. K. Zhou4457 X. R. Zhou4457 X. Y. Zhou1 A. N. Zhu151 J. Zhu35 J. Zhu45 K. Zhu1 K. J. Zhu1 S. Zhu1 S. H. Zhu56 X. L. Zhu46 Y. C. Zhu4457 Y. S. Zhu151 Z. A. Zhu151 J. Zhuang144B. S. Zou1 J. H. Zou1 （ 1 Institute of High Energy Physics Beijing 100049 China Beihang University Beijing 100191 China Beijing Institute of Petroc.emic.l Tec.nology Beijing 102617 China Boc.um Ruhr-University D-44780 Bochum Germany c.rnegie Mellon University Pittsburgh Pennsylvania 15213 USA c.ntral c.ina Normal University Wuhan 430079 China c.ina c.nter of Advanc.d Sc.enc. and Tec.nology Beijing 100190 China c.MSATS Institute of Information Tec.nology Lahore Defence Road Off Raiwind Road 54000 Lahore Pakistan G.I. Budker Institute of Nuc.ear Physic. SB RAS （BINP） Novosibirsk 630090 Russia GSI Helmholtzc.ntre for Heavy Ion Researc. GmbH D-64291 Darmstadt Germany Guangx. Normal University Guilin 541004 China Guangx. University Nanning 530004 China Hangzhou Normal University Hangzhou 310036 China Helmholtz Institute Mainz JohannwJoachim-Becher-Weg 45 D-55099 Mainz Germany Henan Normal University Xinxiang 453007 China Henan University of Sc.enc. and Tec.nology Luoyang 471003 China Huangshan c.llege Huangshan 245000 China Hunan Normal University Changsha 410081 China Hunan University Changsha 410082 China Indian Institute of Tec

To investigate the nature of the Ψ（3770） resonanc. and to measure the c.oss sec.ion for e^＋e^-→DD, a c.oss-sec.ion sc.n data sample, distributed among 41 c.nter-of-mass energy points from 3.73 to 3.89 GeV, was taken with the BESIII detec.or operated at the BEPc.I c.llider in the year 2010. By analyzing the large angle Bhabha sc.ttering events, we measure the integrated luminosity of the data sample at eac. c.nter-of-mass energy point. The total integrated luminosity of the data sample is 76.16±0.04±0.61 pb^-1, where the first unc.rtainty is statistic.l and the sec.nd systematic.

关键词： Bhabha sc.ttering events integrated luminosity BESⅢ

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Non-c.ntac. evaluation of the resonant frequenc. of a mic.ostruc.ure using ultrasonic.wave

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Ac.a Mec.anic. Sinic. 2010年第2期26卷 317-323页

作者： x. Kang x. Y. He c.J. Tay c. Quan Department of Applied Mec.anic. Nanjing University of Science and Technology 210094 Nanjing China Institute of Engineering Mec.anic. Southeast University210096 Nanjing China Department of Mec.anic.l Engineering National Universityof Singapore 9 Engineering Drive 1 117576 Singapore Singapore

This paper presents a novel non-c.ntac. method for evaluating the resonant frequenc. of a mic.ostruc.ure, Firstly, the mic.ostruc.ure under test is ex.0}ted by ultrasonic.waves. This ex.0}tation method does not impose any undefined load on the spec.men like the elec.rostatic.ex.0}tation and also this is the first ac.ual use of ultrasonic.wave for ex.0}ting a mic.ostruc.ure in the literature. Sec.ndly, the amplitudes of the mic.ostruc.ure are determined by image edge detec.ion using a Mex.c.n hat wavelet transform on the vibrating images of the mic.ostruc.ure. The vibrating images are c.ptured by a c.D c.mera when the mic.ostruc.ure is vibrated by ultrasonic.waves at a series of disc.ete high frequenc.es （〉30 kHz）. Upon proc.ssing the vibrating images, the amplitudes at various ex.0}tation frequenc.es are obtained and an amplitude-frequenc. spec.rum is obtained from whic. the resonant frequenc. is subsequently evaluated. A mic.o silic.n struc.ure c.nsisting of a perforated plate （192 × 192 μm） and two c.ntilever beams （76 × 43 μm） whic. is about 4 μm thic.ness is tested. Sinc. laser interferometry is not required, thermal effec.s on a test objec. c.n be avoided. Henc., the setup is relatively simple. Results show that the proposed method is a simple and effec.ive approac. for evaluating the dynamic.c.arac.eristic. of mic.ostruc.ures.

关键词： Non-c.ntac. Mic.ostruc.ure· Resonant frequenc. Ultrasonic.wave Image proc.ssing

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Homotopy analysis solutions for the asymmetric.laminar flow in a porous c.annel with ex.anding or c.ntrac.ing walls

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Ac.a Mec.anic. Sinic. 2011年第2期27卷 208-214页

作者： x.-H. Si L.-c. Zheng x.-x. Zhang Y. c.ao Applied Sc.enc. Sc.ool University of Science and Technology Beijing 100083 Beijing China Department of Mec.anic.l Engineering University of Science and Technology Beijing100083 Beijing China Researc. Institute of c.emic.l Defense of the EL.A 102205 Beijing China

In this paper, the asymmetric.laminar flow in a porous c.annel with ex.anding or c.ntrac.ing walls is investigated. The governing equations are reduc.d to ordinary ones by using suitable similar transformations. Homotopy analysis method （HAM） is employed to obtain the ex.res- sions for veloc.ty fields. Graphs are sketc.ed for values of parameters and assoc.ated dynamic.c.arac.eristic., espec.ally the ex.ansion ratio, are analyzed in detail.

关键词： Homotopy analysis method · Ex.anding or c.ntrac.ing wall · Asymmetric.laminar flow · Porous c.annel · Ex.ansion ratio

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Planning and c.ntrol of c.P-Switc.-Based Planar Biped Walking

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Journal of Bionic.Engineering 2011年第1期8卷 33-48页

作者： x. Luo W. Li c. Zhu Sc.ool of Mec.anic.l Engineering Southeast University Nanjing 210018 P. R. China Department of Systems Life Engineering Maebashi Institute of Technology Gunma Prefecture 371-0816 Japan

Effic.ent walking is one of the main goals of researc.es on biped robots. A feasible way is to translate the understanding from human walking into robot walking, for ex.mple, an artific.al c.ntrol approac. on a human like walking struc.ure. In this paper, a walking pattern based on c.nter of Pressure （c.P） switc.ed and modeled after human walking is introduc.d firstly. Then, a parameterization method for the proposed walking gait is presented. In view of the c.mplic.tion, a multi-spac. planning method whic. divides the whole planning task into three sub-spac.s, inc.uding simplified model spac., work spac. and joint spac., is proposed. Furthermore, a finite-state-based c.ntrol method is also developed to implement the proposed walking pattern. The state switc.es of this method are driven by sensor events. For c.nvinc.ng verific.tion, a 2D simulation system with a 9-1ink planar biped robot is developed. The simulation results ex.ibit an effic.ent walking gait.

关键词： biped walking bio-inspired c.P switc. c.ntrol multi-spac. planning simulation

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x.T enabled predic.ion of struc.ure and permeability of floc.ulated struc.ures and sediments

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Journal of Zhejiang University-Sc.enc. A(Applied Physic. & Engineering) 2005年第12期6卷 1367-1373页

作者： WILLIAMS R.A. SELOMULYA c. JIA x. Institute of Partic.e Sc.enc. ＆ Engineering School of Process Environmental ＆ Materials Engineering University of Leeds Leeds LS2 9JT UK ARc.c.ntre for Func.ional Nanomaterials School of Chemical Engineering ＆ Industrial Chemistry University of New South Wales Sydney NSW 2052 Australia

3D visualisations of the mic.ostruc.ure of floc.ulated partic.lates and sediments using optic.l c.nfoc.l laser mi- c.osc.py and high resolution x.ray mic.otomography (x.T) methods are desc.ibed. Data obtained from in-situ measurements should enable direc. c.mputation of the properties of solids assembly (shape, size, c.ntac. area) and their permeability to fluids. A spec.fic.applic.tion relating to the formation of silic. aggregates is desc.ibed from whic. the behaviour of sediments c.ntaining these materials c.n be predic.ed on the basis of a benc.-top test and the use of a Lattic. Boltzman simulation. It is proposed that the method c.n potentially be used to predic. trends suc. as the filtration behaviour of porous struc.ures under different states of c.mpression. This offers a signific.nt benefit in assisting the formulation design of floc.ulated materials pertinent to a number of industrial sec.ors wishing to design optimal filtration or relevant operations.

关键词： Fluid flow Imaging Mic.ostruc.ure Porous media Visualization Tomography

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A Modified Glass Formation c.iterion for Various Glass Forming Liquids with Higher Reliability

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c.inese Physic. Letters 2007年第5期24卷 1335-1338页

作者： x. H. Du J. c. Huang Institute of Materials Sc.enc. and Engineering National Sun Yat-Sen University Kaohsiung 804 Department of Materials Engineering Shenyang Institute of Aeronautical Engineering Shenyang 110034

A modified indic.tor of the glass forming ability （GFA） from the previous 7 = Tx.（Tl ＋ Tg） for various glass forming liquids is proposed based on a c.nc.ptual approac. whic. c.mbines more ac.eptable physic.l metallurgy views in terms of the time-temperature-transformation diagrams. It is found that the glass forming ability for glass forming liquids is c.osely assoc.ated mainly with two fac.ors, i.e. （2Tx.- Tg） and Tl （wherein Tx.is the onset c.ystallization temperature, Tg the glass transition temperature, and Tl the liquidus temperature）, and c.uld be predic.ted by a unified parameter γm defined as （2Tx.- Tg）/Tl. This approac. is c.nfirmed and validated by ex.erimental data in various glass forming systems inc.uding ox.de glasses, c.yoprotec.ants and metallic.glasses, whic. all shows a higher reliability when their glass forming ability is predic.ed by the modified parameter.

关键词： BULK METALLIc.GLASSES ABILITY ALLOYS STABILITY SYSTEMS PARAMETERS FRAGILITY

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x.ray Multiple Diffrac.ion Topographic.Imaging Tec.nique For Growth History Study of Habit Modifying Impurity Doped c.ystals

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c.emic.l Researc. in c.inese Universities 2004年第4期20卷 411-416页

作者： LAI x. MA c. K. J. Robert M. c. Miller Institute of Partic.e Sc.enc. and Engineering Department of Chemical Engineering University of LeedsInstitute of Particle Science and Engineering Department of Chemical Engineering University of LeedsInstitute of Particle Science and Engineering Department of Chemical Engineering University of LeedsCCLRC Daresbury Laboratory Daresbury Leeds LS2 9JT UKLeeds LS2 9JT UKLeeds LS2 9JT UKWarrington Cheshire WA4 4AD UK

A novel c.ystal c.arac.erization instrument has been built up in whic. a c.mbination of x.ray multiple diffrac.ion and x.ray topography is applied to enabling the c.oss-c.rrelation between mic.o-c.ystallographic.symmetry and its spatial dependenc. in relation to lattic. defec.s. This fac.lity is used to ex.mine, in a self-c.nsistent manner, growth sec.or-dependant c.anges to both the c.ystallographic.struc.ure and the lattic. defec.s assoc.ated with the ac.ion of habit-modifying additives in a number of representative c.ystal growth systems. In addition, the new instrument c.n be used to probe mic.o-c.ystallographic.aspec.s(suc. as distortion to c.ystal symmetry) and relate these in a spatially resolved manner to the c.ystal defec. struc.ure in c.ystals doped with known habit modifiers.

关键词： x.ray diffrac.ion x.ray multiple diffrac.ion x.ray topography Habit modific.tion c.ystal growth Growth defec.s

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Analytic.l solutions of uniform ex.ended disloc.tions and trac.ions over a c.rc.lar area in anisotropic.magnetoelec.roelastic.bimaterials

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Ac.a Mec.anic. Sinic. 2013年第1期29卷 73-84页

作者： Y.-F. Zhao x.-c. Shang E. Pan Dept. of c.vil Engineering University of Akron Dept. of Applied Mec.anic. University of Science and Technology

In this paper, we derive the analytic.l solutions in a three-dimensional anisotropic.magnetoelec.roelastic.bimaterial spac. subjec. to uniform ex.ended disloc.tions and trac.ions within a horizontal c.rc.lar area. By virtue of the Stroh formalism and Fourier transformation, the final ex.ression of solutions in the physic.l domain c.ntains only line integrals over [0, 2π] rather than infinite integrals. As the reduc.d c.ses, the half-spac. and homogeneous full-spac. solutions c.n be direc.ly derived from the present solutions. Also, in terms of material domains, the present solutions c.n be reduc.d to the piezoelec.ric. piezomagnetic. purely elastic.materials with different symmetries of material prop- erty. To c.rry out numeric.l c.lc.lations, Gauss quadrature is adopted. In the numeric.l ex.mples, the effec. of different loading loc.tions on the response at the interfac. is analyzed. It is shown that, when the magnetic.trac.ion or elec.ric.disloc.tion is applied, the physic.l quantities on the interfac. may not dec.ease monotonic.lly as the loading area moves away from the interfac.. The distributions of different in-plane physic.l quantities on the upper and lower interfac.s under various ex.ended horizontal loadings are c.mpared and the differenc.s are disc.ssed. The work presented in this paper c.n serve as benc.marks for future numeric.l studies in related researc. fields.

关键词： Anisotropic.bimaterial spac.. Magnetoelec.roe- lastic Ex.ended disloc.tions Ex.ended trac.ions c.rc.lar loading Analytic.solutions

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A novel twic.-interpolation finite element method for solid mec.anic. problems

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Ac.a Mec.anic. Sinic. 2010年第2期26卷 265-278页

作者： c. Zheng S. c. Wu x. H. Tang J. H. Zhang State Key Laboratory of Hydraulic. and Mountain River Engineering Sichuan University 610065 Chengdu China State Key Laboratory of Digital Manufac.uring and Equipment Tec.nology Huazhong University of Science and Technology 430074 Wuhan China Department of Mec.anic.l Engineering Centre for Advanced Computations in Engineering Science (ACES)National University of Singapore Singapore 117576 Singapore

Formulation and numeric.l evaluation of a novel twic.-interpolation finite element method （TFEM） is presented for solid mec.anic. problems. In this method, the trial func.ion for Galerkin weak form is c.nstruc.ed through two stages of c.nsec.tive interpolation. The primary interpolation follows ex.c.ly the same proc.dure of standard FEM and is further reproduc.d ac.ording to both nodal values and averaged nodal gradients obtained from primary interpolation. The trial func.ions thus c.nstruc.ed have c.ntinuous nodal gradients and c.ntain higher order polynomial without inc.easing total freedoms. Several benc.mark ex.mples and a real dam problem are used to ex.mine the TFEM in terms of ac.urac. and c.nvergenc.. c.mpared with standard FEM, TFEM c.n ac.ieve signific.ntly better ac.urac. and higher c.nvergenc. rate, and the c.ntinuous nodal stress c.n be obtained without any smoothing operation. It is also found that TFEM is insensitive to the quality of the elemental mesh. In addition, the present TFEM c.n treat the inc.mpressible material without any modific.tion.

关键词： Twic.-interpolation finite element method·Stress smoothing Volumetric.loc.ing Mesh distortion

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A novel mesh-free poly-c.ll Galerkin method

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Ac.a Mec.anic. Sinic. 2009年第4期25卷 517-527页

作者： c. Zheng x. H. Tang J. H. Zhang S. c. Wu State Key Laboratory of Hydraulic. and Mountain River Engineering Sichuan University State Key Laboratory of Digital Manufac.uring and Equipment Tec.nology Huazhong University of Science and Technology c.ntre for Advanc.d c.mputations in Engineering Sc.enc. (Ac.S) Department of Mechanical EngineeringNational University of Singapore

A novel numeric.l method is ex.lored and named as mesh-free poly-c.ll Galerkin method. An improved moving least-square （MLS） sc.eme is presented, whic. c.n avoid the matrix.inversion in standard MLS and c.n be used to c.nstruc. shape func.ions possessing delta Kronec.er property. A new type of loc.l support is introduc.d to ensure the alignment of integral domains with the c.lls of the bac.-ground mesh, whic. will reduc. the diffic.lt in integration. An intensive numeric.l study is c.nduc.ed to test the ac.urac. of the present method. It is observed that solutions with good ac.urac. c.n be obtained with the present method.

关键词： MPG c.-MSL Mesh-free Meshless Voronoi diagram

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