摘要：
Wireless Sensor Networks (WSNs) have drawn the attention of the research community in the last few years, driven by a wealth of theoretical and practical challenges. In general, most of the applications have dense sensor deployment and low bandwidth demands, and are usually delay tolerant in WSNs. Therefore, the spatial and temporal correlation and event-to-sink along with nature of the WSNs is characterized. Therefore, the design of routing table of WSNs node is the basis of the study of simulating routing protocol, and range-free location and so on. In this paper we present the algorithm of creating routing table based on classical RIP (Routing information Protocol) and the features of nodes communication in WSNs are investigated. In order to validate our proposed algorithm, DV-Hop based on the information of routing table being created by our algorithm is simulated in MATLAB. The experiment results illustrate that our algorithm is valid.
摘要：
Optical transmission is getting more popular in the access network due to the increasing demand for bandwidth. Gigabit-capable passive optical network (GPON) is the basic technology to support the structure of the next-generation fiber to the home (FTTH) system. This paper analyzed GPON protocols and network configuration, the information about dynamic bandwidth allocation (DBA) in GPON protocols, a new DBA algorithm based on the all the transmission containers (T- CONT) was proposed, elaborated the specific algorithm for improved scheme, and builds the GPON model for this algorithm and test its performance. The simulation results show this algorithm can satisfy the full service quality of service (QoS) requirements of GPON.
期刊：
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2009年36(6):064041- ISSN：0954-3899
通讯作者：
Xu, Mingmei
作者机构：
[Liu, Lianshou; Xu, Mingmei] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Yu, Meiling] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China.
通讯机构：
[Xu, Mingmei] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
会议名称：
12th International Conference on Strangeness in Quark Matter
会议时间：
OCT 05-10, 2008
会议地点：
Tsinghua Univ, Beijing, PEOPLES R CHINA
会议主办单位：
[Xu, Mingmei;Liu, Lianshou] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.^[Yu, Meiling] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China.
摘要：
It is shown that the RHIC energy-scan experiments can serve as an effective tool for studying the system evolution along the first-order phase transition line passing the critical point, which is a second-order phase transition process. During this process the system structure changes while passing the critical point, and correspondingly, the transverse momentum of the final state particles gets an extra component. This phenomenon can provide useful information about the system structure in different phases and can serve as an effective signal for locating the critical point.
作者机构：
[Yang, Ya-Dong; Chang, Qin] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;[Chang, Qin] Henan Normal Univ, Dept Phys, Xinxiang 453007, Henan, Peoples R China.
通讯机构：
[Yang, Ya-Dong] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.
摘要：
We constrain the light CP-odd Higgs A(1)(0) in NMSSM via the rare decay pi(0) -> e(+)e(-). It is shown that the possible 3 sigma discrepancy between theoretical predictions and the recent KTeV measurement of B(pi(0) -> e(+)e(-)) cannot be resolved when the constraints from gamma -> gamma A(1)(0), a(mu) and pi(0) -> gamma gamma are combined. Furthermore, the combined constraints also exclude the scenario involving m(A1)(0) = 214.3 MeV, which is invoked to explain the anomaly in the Sigma(+) -> p mu(+)mu(-) decay found by the HyperCP Collaboration. (C) 2009 Elsevier B.V. All rights reserved.
作者机构：
[Xu, Yuan-Guo; Yang, Ya-Dong] Huazhong Normal Univ, Minist Educ, Key Lab Quark & Lepton Phys, Wuhan, Peoples R China.;[Xu, Yuan-Guo; Yang, Ya-Dong] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Hubei, Peoples R China.;[Wang, Ru-Min] Yonsei Univ, Dept Phys, Seoul 120479, South Korea.
通讯机构：
[Yang, Ya-Dong] H;Huazhong Normal Univ, Minist Educ, Key Lab Quark & Lepton Phys, Wuhan, Peoples R China.
摘要：
With the first measurements of the branching ratios and the direct CP asymmetries of Bs→K−K+, K−π+ decays by the CDF collaboration, we constrain the relevant parameter space of the minimal supersymmetric standard model with R-parity violation. Using the constrained R-parity violating couplings, we further examine their possible effects in Bs→K−*π+, K(*)−ρ+ and K(*)±K(*)∓ decays. We find that some branching ratios and CP asymmetries are very sensitive to the R-parity violating couplings. The direct longitudinal CP asymmetries of tree-dominated process Bs→K*−ρ+ could be enlarged to ∼70% and the longitudinal polarizations of Bs→K*−K*+, K*−ρ+ decays could be suppressed very much by the squark exchange couplings. Near future experiments at CERN LHC can test these predictions and shrink/reveal the parameter spaces of RPV SUSY.
期刊：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2009年24(SUPPL.1):1-794 ISSN：0217-751X
通讯作者：
Asner, D. M.
作者机构：
Institute of High Energy Physics, Beijing 100049, China;III. Physikalisches Institut, RWTH Aachen University, 52056 Aachen, Germany;High Energy Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, United States;Dept. of Physics, Univiversitat Autonoma de Barcelona, E-08193 Bellaterra, Barcelona, Spain;China Center for Advanced Science and Technology (CCAST), Beijing 100080, China
通讯机构：
Carleton University, 1125 Colonel By Drive, Canada
摘要：
There has recently been a dramatic renewal of interest in the subjects of hadron spectroscopy and charm physics. This renaissance has been driven in part by experimental reports of DcD̄0 mixing and the discovery of narrow Dsj states and a plethora of charmonium-like XY Z states at the B factories, and the observation of an intriguing proton-antiproton threshold enhancement and the possibly related X(1835) meson state at BESII. At the same time, lattice QCD is now coming of age, and we are entering a new era when precise, quantitative predictions from lattice QCD can be tested against experimental measurements. For example, the High Precision QCD (HPQCD) and United Kingdom QCD (UKQCD) collaboration's recent high-precision, unquenched calculation of fD+ = 208 ± 4 MeV has been found to agree with the CLEO-c collaboration measurement of fD- = 223± 17 ± 8 MeV - a precision level of ~ 8%. Intriguingly, this agreement does not extend to fDs, where the HPQCD + UKQCD result fDe = 241 ±3 MeV is more than three standard deviations below the current world average experimental value fDs = 276 ±9 MeV. Precision improvements, especially on the experimental measurements, are called for and will be of extreme interest. The BBS-III experiment at BEPCII in Beijing, which will start operation in summer 2008, will accumulate huge data samples of 10 x 109 J/ψ, 3 x 109 ψ(2S) , 30 million DD̄ or 2 million D-sD-s -pairs per running year, respectively, running in the Ι-charm theshold region. Coupled with currently available results from LEO-c, BES-III will make it possible to study in detail, and with unprecedentedly high precision, light hadron spectroscopy in the decays of charmonium states and charmed mesons. In addition, about 90 million DD pairs will be collected at BES-III in a three-year run at the ψ(3770) peak. Many high precision measurements, including CKM matrix elements related to charm weak decays, decay constants fD- and f Ds, Dalitz decays of three-body D meson decays, searches for CP violation in the charmed-quark sector, and absolute decay branching fractions, will be accomplished. BES-III analyses are likely to be essential in deciding if recently observed signs of mixing in the DcDc meson system are actually due to new physics or not. BES-III measurements of f D- and fDs at the ~ 1% precision level will match the precision of lattice QCD calculations and provide the opportunity to probe the charged Higgs sector in some mass ranges that will be inaccessible to the LHC. With modern techniques and huge data samples, searches for rare, lepton-number violating, flavor violating and/or invisible decays of D-mesons, charmonium resonances, and tau-leptons will be possible. Studies of Ι-charm physics could reveal or indicate the possible presence of new physics in the low energy region. This physics book provides detailed discussions on important topics in Ι-charm physics that will be explored during the next few years at BES-III. Both theoretical and experimental issues are covered, including extensive reviews of recent theoretical developments and experimental techniques. Among the subjects covered are: innovations in Partial Wave Analysis (PWA), theoretical and experimental techniques for Dalitz-plot analyses, analysis tools to extract absolute branching fractions and measurements of decay constants, form factors, and CP-violation and D0D0-oscillation parameters. Programs of QCD studies and near-threshold tau-lepton physics measurements are also discussed.
摘要：
We investigate the generation of two-mode-entangled light from a laser-driven three-level V-type atom inside a cavity by taking into account spontaneously generated quantum interference between two atomic decay channels. We show that under some conditions, the system can reduce to a nondegenerate parametric amplifier which is responsible for the entanglement between the two cavity modes. Compared to the case without the quantum interference, it is found that the entanglement of the cavity field can be significantly enhanced by the interference when the relative phase of the two pumping lasers δϕ=π.
作者机构：
[Yiwen Tang; Ting Xiao] Center for Nanoscience and Nanotechnology,Department of Physics,Central China of Normal University,Wuhan 430079,Hubei P.R.China
会议名称：
The 60th Annual Meeting of The International Society of Electrochemistry(第60届国际电化学会议)
会议时间：
2009-8-16
会议地点：
北京
会议主办单位：
北京大学
会议论文集名称：
The 60th Annual Meeting of The International Society of Electrochemistry(第60届国际电化学会议)论文集
摘要：
In a second-order r-mode theory, Sa and Tom6 found that the r-mode oscil-lation in neutron stars (NSs) could induce stellar differential rotation, which naturally leads to a saturated state of the oscillation. Based on a consideration of the coupling of the r-modes and the stellar spin and thermal evolution, we carefully investigate the in-fluences of the differential rotation on the long-term evolution of isolated NSs and NSs in low-mass X-ray binaries, where the viscous damping of the r-modes and its resultant effects are taken into account. The numerical results show that, for both kinds of NSs, the differential rotation can significantly prolong the duration of the r-modes. As a result, the stars can keep nearly a constant temperature and constant angular velocity for over a thousand years. Moreover, the persistent radiation of a quasi-monochromatic gravitational wave would also be predicted due to the long-term steady r-mode oscillation and stellar rotation. This increases the detectability of gravitational waves from both young isolated and old accreting NSs.
摘要：
To obtain a proper understanding of the 5f elements, the actinides, it is useful to compare their behavior with the 4f transition elements, the lanthanides. It is especially rewarding to capitalize on the remarkable similarity between the solid-state properties of compressed Ce and the actinide metals. The intensively studied-transition in Ce is considered to be a Mott transition, namely, the 4f electron changes its behavior from being localized to become delocalized (itinerant/metallic). This change also means that the 4f electron transforms from a non-bonding to a bonding configuration which, in turn, gives rise to a volume collapse. This collapse is isostructural in character, which contributes to the immense interest in this phase transition. An analogous and remarkable change in bonding (cohesive) properties is also found within the actinide series, where the sudden volume increase from Pu to Am (50%) can be viewed as a Mott transition within the 5f shell as a function of atomic number Z. The elements on the metallic side of the 5f Mott transition, i.e. the earlier actinides (Pa-Pu), show low symmetry structures at ambient conditions, while the heavier elements (from Am and beyond) adopt structures typical for the lighter trivalent lanthanide elements with localized 4f electrons. An important consequence of the localized and trivalent behavior in Am is a non-magnetic 5f6 (J = L + S = 0) configuration for the f electrons. This led to the prediction of superconductivity in americium and subsequently to its experimental verification.
期刊：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2009年9(2):1530-1534 ISSN：1533-4880
通讯作者：
Li, Yuanyuan
作者机构：
[Ai, Hanhua; Huang, Xintang; Li, Yuanyuan; Liu, Jinping] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Li, Yuanyuan] C;Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
会议名称：
6th International Conference on Nanoscience and Technology
会议时间：
JUN 04-06, 2007
会议地点：
Beijing, PEOPLES R CHINA
会议主办单位：
[Li, Yuanyuan;Huang, Xintang;Liu, Jinping;Ai, Hanhua] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
关键词：
Bi 2WO 6.;Hierarchical structures;Self-assembly
摘要：
Bi2WO6 hierarchical structures constructed by a number of square nanoplates of average approximately 70 nm in side length and approximately 25 nm in thickness have been synthesized by a hydrothermal method at 180 degrees C. The single-crystal subunit nanoplates with (002) as their two-dimensional (2D) surfaces assembled orderly using both their edges and faces into free-standing films. It was found that the self-assembled growth of these hierarchical structures strongly depended on surfactant Cetyl Trimethyl Ammonium Bromide (CTAB), the amounts of the starting materials and the molar ratio of precursors (Bi3+ to WO4(2-)), etc. The growth mechanism was discussed based on the comparative experimental results.
作者：
Abelev, B. I.*;Aggarwal, M. M.;Ahammed, Z.;Anderson, B. D.;Arkhipkin, D.;...
期刊：
PHYSICAL REVIEW D,2009年79(11) ISSN：2470-0010
通讯作者：
Abelev, B. I.
作者机构：
[Iordanova, A.; Abelev, B. I.; Barannikova, O.; Hollis, R. S.; Garcia-Solis, E. J.; Hofman, D. J.; Betts, R. R.; Suarez, M. C.] Univ Illinois, Chicago, IL 60607 USA.;[Ullrich, T.; Lamont, M. A. C.; LeVine, M. J.; Ljubicic, T.; Hallman, T. J.; Xu, Z.; Ogawa, A.; Ruan, L.; Tang, A. H.; Videbaek, F.; Fine, V.; Fisyak, Y.; Beavis, D. R.; Lauret, J.; Bland, L. C.; Okada, H.; Longacre, R. S.; Sorensen, P.; Christie, W.; Lebedev, A.; Dunlop, J. C.; Perevoztchikov, V.; Gordon, A.; Landgraf, J. M.; DePhillips, M.; Love, W. A.; Didenko, L.; Guryn, W.; Ludlam, T.; Van Buren, G.; Fachini, P.; Lee, J. H.] Brookhaven Natl Lab, Upton, NY 11973 USA.;[Perkins, C.; Crawford, H. J.; Engelage, J.; Judd, E. G.; Ng, M. J.; Trattner, A. L.] Univ Calif Berkeley, Berkeley, CA 94720 USA.;[Sanchez, M. Calderon de la Barca; Das, D.; Mall, O. I.; Draper, J. E.; Cebra, D.; Reed, R.; Romero, J. L.; Haag, B.] Univ Calif Davis, Davis, CA 95616 USA.;[Guertin, S. M.; Igo, G.; Kurnadi, P.; Whitten, C., Jr.; Trentalange, S.; Gangadharan, D. R.; Huang, H. Z.; Ghazikhanian, V.; Biritz, B.; Cendejas, R.; Tsai, O. D.; Staszak, D.; Wang, G.] Univ Calif Los Angeles, Los Angeles, CA 90095 USA.
通讯机构：
[Abelev, B. I.] U;Univ Illinois, Chicago, IL 60607 USA.
