作者：
Ablikim, M.*;Bai, J. Z.;Ban, Y.;Cai, X.;Chen, H. F.;Chen, H. S.;Chen, H. X.;Chen, J. C.;Chen, Jin;Chen, Y. B.;Chu, Y. P.;Dai, Y. S.;Diao, L. Y.;Deng, Z. Y.;Dong, Q. F.;Du, S. X.;Fang, J.;Fang, S. S.;Fu, C. D.;Gao, C. S.
期刊：
PHYSICAL REVIEW D,2007年76(9) ISSN：1550-7998
通讯作者：
Ablikim, M.
作者机构：
Inst High Energy Phys, Beijing 100049, Peoples R China.;China Ctr Adv Sci & Technol, Beijing 100080, Peoples R China.;Guangxi Normal Univ, Guilin 541004, Peoples R China.;Guangxi Univ, Nanning 530004, Peoples R China.;Henan Normal Univ, Xinxiang 453002, Peoples R China.
通讯机构：
[Ablikim, M (reprint author)] Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要：
Using 58x10(6) J/psi and 14x10(6) psi(2S) events collected by the BESII detector at the BEPC, branching fractions or upper limits for the decays J/psi and psi(2S)->Lambda(Lambda) over bar pi(0) and Lambda(Lambda) over bar eta are measured. For the isospin violating decays, the upper limits are determined to be B(J/psi ->Lambda(Lambda) over bar pi(0))< 6.4x10(-5) and B[psi(2S)->Lambda(Lambda) over bar pi(0)]< 4.9x10(-5) at the 90% confidence level. The isospin conserving process J/psi ->Lambda(Lambda) over bar eta is observed for the first time, and its branching fraction is measured to be B(J/psi ->Lambda(Lambda) over bar eta)=(2.62 +/- 0.60 +/- 0.44)x10(-4), where the first error is statistical and the second one is systematic. No Lambda(Lambda) over bar eta signal is observed in psi(2S) decays, and B[psi(2S)->Lambda(Lambda) over bar eta]< 1.2x10(-4) is set at the 90% confidence level. Branching fractions of J/psi decays into Sigma(+)pi(-)(Lambda) over bar and Sigma(-)pi(+)Lambda are also reported, and the sum of these branching fractions is determined to be B(J/psi ->Sigma(+)pi(-)(Lambda) over bar +c.c.)=(1.52 +/- 0.08 +/- 0.16)x10(-3).
期刊：
STATISTICS & PROBABILITY LETTERS,2008年78(13):1964-1970 ISSN：0167-7152
通讯作者：
Liang, HanYing
作者机构：
[Wang, JiangFeng; Liang, HanYing] Tongji Univ, Dept Math, Shanghai 200092, Peoples R China.;[Wang, JiangFeng] Huazhong Normal Univ, Sch Sci, Hangzhou 310036, Zhejiang, Peoples R China.
通讯机构：
[Liang, HY (reprint author)] Tongji Univ, Dept Math, Shanghai 200092, Peoples R China.
摘要：
Let {X-i: i is an element of N-d} (d >= 1) be a field of negatively associated random variables. Set S-n = Sigma(i <= n) X-i, sigma(2)(n) = Var(S-n). Under some suitable conditions, we show that lim(N-->infinity) 1/D-N Sigma(k <= N)d(k) P (S-k/sigma(k) < x) = Phi(x) for any x is an element of R is a necessary and sufficient criteria for the almost sure central limit theorem, i.e. lim(N-->infinity) 1/D-N Sigma(k <= N)d(k) I (S-k/sigma(k) < x) = Phi(x) a.s. for any x is an element of R, where Phi(x) is the standard normal distribution function, D-N = Sigma(k <= N)d(k) and d(k) = 1/\k\exp(Sigma(d)(S=1)(log k(s))(alpha)), 0 <= alpha < 1/2, N is an element of N-d. In particular, we obtain here the almost sure central limit theorem for negatively associated fields that assures the usual central limit theorem. (C) 2008 Elsevier B.V. All rights reserved.
期刊：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,1993年19(12):2035-2043 ISSN：0954-3899
通讯作者：
ADAMOVICH, MI
作者机构：
ACAD SINICA,BEIJING,PEOPLES R CHINA.;LAWRENCE BERKELEY LAB,BERKELEY,CA 94720.;PANJAB UNIV,CHANDIGARH 160014,INDIA.;HUNAN EDUC INST,CHANESA,PEOPLES R CHINA.;JINP,DUBNA,RUSSIA.
通讯机构：
[ADAMOVICH, MI (reprint author)] ALMA ATA INST HIGH ENERGY PHYS,ALMA ATA,KAZAKHSTAN.
摘要：
The azimuthal substructure of particles produced in ultra-relativistic heavy-ion collisions is investigated. The observed substructure seems to be of stochastic nature and the features of the experimental data can be understood when effects like gamma-conversion and particle interference (HBT) are taken into account.
作者机构：
Inst High Energy Phys, Beijing 100039, Peoples R China.;Univ Sci & Technol China, Hefei 230026, Peoples R China.;Shandong Univ, Jinan 250100, Peoples R China.;Hangzhou Univ, Hangzhou 310028, Peoples R China.;Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China.
通讯机构：
[Bai, JZ (reprint author)] Inst High Energy Phys, Beijing 100039, Peoples R China.
摘要：
BES data on J/psi --> gamma(K+K- pi(+)pi(-)) are presented. The K* (K) over bar* contribution peaks strongly near threshold. It is fitted with a broad 0(-+) resonance with mass M = 1800 +/- 100 MeV, width Gamma = 500 +/- 200 MeV. A broad 2(++) resonance peaking at 2020 MeV is also required with width similar to 500 MeV. There is further evidence for a 2(-+) component peaking at 2.55 GeV. The non-K* (K) over bar* contribution is close to phase space; it peaks at 2.6 GeV and is very different from K * K (*) over bar. (C) 2000 Elsevier Science B.V. All rights reserved.
摘要：
Recently wireless sensor networks (WSNs) are used to monitor the physical environment through the large number of battery-powered sensor nodes. Because it is difficult to change or recharge batteries, nodes are spend large amounts of time in a low-power "sleep" mode generally. WSNs have sparked numerous research interests in sleeping methods to schedule nodes' activities. In this paper, an energy saving method based on adaptive sleeping for average delay constraint is proposed for WSNs of variation data flow. Periodic sleeping and listening pattern is adopted in sleeping state to achieve energy efficiency and guarantee transmission delay. The node switches into the sleeping period if there is no packet to transmit or it receives an RTS/CTS message destined to other nodes in the listening period. A Markov chain model for the method is presented to get the optimal sleeping period for average delay constraint.
摘要：
The oral arithmetic ability is a vital component of pupils' computing ability. It is very significant to cultivate and develop their oral arithmetic abilities, especially for the lower grade pupils. The traditional oral arithmetic exercises adopt the methods of using cards and topic tests. Teachers need to spend lots of time setting exams and grading papers. Students cannot get feedback and modification in time. Excel software overcomes disadvantages of traditional oral arithmetic practice effectively. It improves the efficiency and effect of instruction. This paper describes how to build an electronic oral arithmetic exercise on the basis of introducing Excel software simply and also discusses the function and meaning of electronic oral arithmetic exercise for the integration of information technology and elementary mathematics.
期刊：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2007年34(8) ISSN：0954-3899
通讯作者：
Ma, YuGang
作者机构：
Shanghai Inst Appl Phys, Shanghai, Peoples R China.;Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China.;Univ Calif, Oakland, CA 94607 USA.;Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA.
期刊：
PHYSICA STATUS SOLIDI B-BASIC RESEARCH,1996年195(2):549-552 ISSN：0370-1972
通讯作者：
Yang, JL
作者机构：
UNIV SCI & TECHNOL CHINA,CTR FUNDAMENTAL PHYS,HEFEI 230026,ANHUI,PEOPLES R CHINA.;NANJING UNIV SCI & TECHNOL,DEPT APPL PHYS,NANJING 210014,JIANGSU,PEOPLES R CHINA.;CENT CHINA NORMAL UNIV,DEPT PHYS,WUHAN 430070,HEBEI,PEOPLES R CHINA.;ACAD SINICA,INT CTR MAT PHYS,SHENYANG 110015,PEOPLES R CHINA.
通讯机构：
[Yang, JL (reprint author)] ACAD SINICA,INT CTR MAT PHYS,SHENYANG 110015,PEOPLES R CHINA.
摘要：
The electronic structure of the 13-atom Rh cluster is studied with the structure model optimized by Estiu and Zerner using the discrete variational local-spin density-functional method. The magnetic moment per atom of the cluster is calculated to be 0.54 mu(B), in good agreement with experimental measurements (0.48 +/- 0.13)mu(B). It confirms our previous assumption that the structural distortion of the Rh-13 cluster from a perfect icosahedron to its ground state geometry decreases its magnetic moment and makes the theoretical calculation close to the experimental measurement.
摘要：
Let G = (V-1, V-2;E) be a bipartite graph with /V-1/ = /V-2/ = n, and sigma (2)(G) = min{d(u) + d(v): u, v is an element of V(G), uv is not an element of (G)}. In this paper, we show that G has a 2-factor which exactly contains k independent cycles if sigma (2)(G) greater than or equal to n + 2 for any 1 less than or equal to k less than or equal to [(n - 1)/2], and we also show that the result is sharp. (C) 2001 Published by Elsevier Science B.V.
摘要：
The correlation between C-13 chemical shifts of DNA and structure Parameters (the main axis helix twist angle OMEGA, base-plane roll angle rho, main chain torsion angle delta and propeller twist angle omega) has been discovered and proved indirectly. The carbons relating to the structure parameters have been found and interpreted theoretically. Relative variations in chemical shifts of these carbons obviously reflect purine-purine clash (steric hindrance) and have been compared with sum functions SIGMA of Calladine-Dickerson rules. It would be possible to provide the information about conformation of DNA from C-13 NMR spectra and to observe the structure parameters of OMEGA, rho, delta and omega of DNA in solution.
作者机构：
[Gao, YQ; Liu, TCY; Tang, XJ] Huazhong Normal Univ, Inst Quantum Elect, Guangzhou 510631, Peoples R China.
会议名称：
1997 Shanghai International Conference on Laser Medicine and Surgery
会议地点：
SHANGHAI, PEOPLES R CHINA
关键词：
intravascular low intensity He-Ne laser irradiation on blood;idiopathic edema
摘要：
Liu TCY et al (Chinese Journal of Laser Medicine & Surgery. 6(3), pp. 125-131, 1997) have put forward the biological information model on low intensity laser irradiation (BIML): low intensity laser irradiation couples with intracellular messenger through the chromophore absorption in the cell membrane: hot-color (red, orange, yellow) laser irradiation activates cAMP phosphodiesterase through Gi protein, or activates phosphoinositide phospholipase C (PLC) through G(q) protein, or activates one of receptor-associated kinases: cAMP; cold-color (green, blue, violet) laser irradiation activates adenylate cyclase through G(s) protein: cAMP up arrow. In this paper, under the guidance of BIML, we applied the intravascular low intensity He-Ne laser irradiation on blood to a patient of idiopathic edema, and succeeded.
期刊：
FOREIGN LITERATURE STUDIES,2007年29(2):110-116 ISSN：1003-7519
通讯作者：
Ma, Xian
作者机构：
Guangdong Univ Business Studies, Sch Foreign Languages, Guangzhou 510320, Peoples R China.;Cent China Normal Univ, Wuhan 430079, Peoples R China.;Xiangtang Univ, Coll English Dept, Xiangtan 411105, Peoples R China.
关键词：
Thomas Hardy;"novels of environment and character";ballad;tradition
摘要：
The ballad serves as a special narrative device, displaying an important and unique artistic feature in Hardy' s novels. Hardy skillfully employs the traditional English ballads in his "novels of environment and character" I which produces a profound effect on the themes, plots, characters and settings. The ballads interwoven in the narration not only add to the color and atmosphere of the novels, but also intensify the connotations, expand the thematic significance and enhance the artistic quality.
