作者机构：
[Ding, X. X.; Qi, S. R.; Elssfah, E. M.; Tang, C.; Liu, S. J.; Luo, J. J.; Song, H. S.; Zhang, J.; Lin, J.; Qi, SR] Cent China Normal Univ, Dept Phys, Inst Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Qi, S. R.] C;Cent China Normal Univ, Dept Phys, Inst Phys, Wuhan 430079, Peoples R China.
通讯机构：
Department of Electronic and Information Engineering, Huazhong Normal University, China
关键词：
超宽带;多径衰落;协同分集
摘要：
基于STBC（space-tim e b lock cod ing）可以实现发射天线数确定的完全发射分集,并且仅仅对接收信号进行线性处理的非常简单的最大似然译码算法特点,文中将分布式STBC技术应用到UWB（u ltra w ideband）系统中,构建一个分布式STBC-UWB系统,以此来获得更好的系统性能。考虑只有单个中继节点的情况下,推导出该系统的误比特率表达式。在S-V信道模型环境下,利用MATLAB仿真了分布式STBC-UWB系统误码率性能,并与传统UWB系统进行比较,发现采用分布式STBC-UWB系统比传统系统在误码率性能上明显提高。
作者机构：
[Jia Zhi-Jie; Yu Ying; Ma Li-Li] Institute of Nano-Science and Technology, Central China Normal University, Wuhan 430079, China;[Fu Shao-Yun] Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China;[Huang Wen-Yu] Wuhan Yaohua Pilkington Safety Glass Co. Ltd., Wuhan 430010, China;[Zhu Lu-Ping] Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China, Graduate School of the Chinese, Academy of Sciences, Beijing 100049, China
通讯机构：
[Fu, SY ] ;Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100080, Peoples R China.
作者机构：
[Hou, De-fu] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;Rockefeller Univ, Dept Phys, New York, NY 10021 USA.
通讯机构：
[Hou, De-fu] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
We clarify general properties of the energy gap regarding its functional dependence on the energy-momentum dictated by the invariance under a space inversion or a time reversal. Then we derive perturbltively the equation of the imaginary part of the gap function for dense QCD in weak coupling and generalize our results from 2SC case to CFL case. We confirm that the imaginary part is down by g relative to the real part in weak coupling. The numerical results show that, up to the leading order, the imaginary part is no larger than one MeV at extremely large densities and can be as large as several MeV for the densities of physical interest. (c) 2006 Elsevier B.V. All rights reserved.
通讯机构：
[Guo, Yun] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
Within the framework of the generalized factorization in pQCD, we investigate the multiple parton scattering and induced parton energy loss at twist-6 in deeply inelastic e-A scattering with the helicity amplitude approximation. It is shown that twist-6 processes will give rise to additional nuclear size dependence of the parton energy loss due to LPM interference effect while its contribution is power suppressed. (c) 2006 Elsevier B.V. All rights reserved.
期刊：
International Conference on Communication Technology Proceedings, ICCT,2006年:1017-+
通讯作者：
Xu, Kaihua
作者机构：
[Xu, Kaihua] Cent China Normal Univ, Res Ctr Dig Space Technol, Wuhan 430079, Peoples R China.;[Wang, Ya] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Liu, Yuhua] Cent China Normal Univ, Dept Comp Sci, Wuhan 430079, Peoples R China.
通讯机构：
[Xu, Kaihua] C;Cent China Normal Univ, Res Ctr Dig Space Technol, Wuhan 430079, Peoples R China.
会议名称：
10th International Conference on Communication Technology (ICCT 2006)
会议时间：
NOV 27-30, 2006
会议地点：
Guilin, PEOPLES R CHINA
会议主办单位：
[Xu, Kaihua] Cent China Normal Univ, Res Ctr Dig Space Technol, Wuhan 430079, Peoples R China.^[Wang, Ya] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.^[Liu, Yuhua] Cent China Normal Univ, Dept Comp Sci, Wuhan 430079, Peoples R China.
摘要：
In this paper, we propose a routing protocol based on Multi-path Data Aggregation (MDA) for sensor network. First, we introduce the techniques, such as data aggregation and so on, then describe the implementation process of this protocol, and finally estimate its performance by our emulator. The simulation results show that because of this protocol, the nodes energy is reduced and the lifetime of network is extended.
期刊：
JOURNAL OF PHYSICAL CHEMISTRY B,2006年110(21):10354-10357 ISSN：1520-6106
通讯作者：
Tang, Chengchun
作者机构：
Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan.;Tsinghua Univ, Tsinghua Foxconn Nanotechnol Res Ctr, Beijing 100084, Peoples R China.;Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.;Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.;[Tang, Chengchun] Natl Inst Mat Sci, Adv Mat Lab, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.
通讯机构：
[Tang, Chengchun] N;Natl Inst Mat Sci, Adv Mat Lab, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan.
摘要：
We have measured the thermal conductivity of bulky pellets made of various boron nitride (BN)-based nanomaterials, including spherical nanoparticles, perfectly structured, bamboo-like nanotubes, and collapsed nanotubes. The thermal conductivity strongly depends on the morphology of the BN nanomaterials, especially on the surface structure. Spherical BN particles have the lowest thermal conductivity while the collapsed BN nanotubes possess the best thermoconductive properties. A model was proposed to explain the experimental observations based on the heat percolation passage considerations.
作者机构：
[Hou, Xi-Wen] Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.;Huazhong Normal Univ, Dept Informat Management, Wuhan 430079, Peoples R China.;Huazhong Normal Univ, Sch Nat Sci, Wuhan 430079, Peoples R China.;Inst High Energy Phys, Beijing 100049, Peoples R China.
通讯机构：
[Hou, Xi-Wen] H;Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
摘要：
The dynamical properties of quantum entanglement in the integrable Jaynes–Cummings model with a Kerr nonlinearity are studied in terms of the reduced-density linear entropy with various Kerr coupling parameters and initial states, where the initial states are prepared by the coherent states placed in the corresponding phase space described in terms of canonical variables. The mean entanglement averaged over time is employed to investigate the behavior of entanglement of those coherent states. It is shown that the mean entanglement of the coherent states put near the centers of periodic orbits, both with a strong Kerr coupling and without a Kerr coupling, tends to be the minimal, and that the mean entanglement of the coherent states centered near the boundary with a strong Kerr coupling is the minimal while that without Kerr coupling is the maximal.
作者机构：
[Ding, X. X.; Tang, C. C.; Elssfah, E. M.; Liu, S. J.; Huang, Y.; Luo, J. J.; Song, H. S.; Tang, CC; Lin, J.; Zhang, J.; Qi, S. R.] Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Tang, C. C.] C;Cent China Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
作者机构：
[Fu, Jinghua; Fu, JH] Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
通讯机构：
[Fu, Jinghua] H;Huazhong Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
We propose net charge fluctuation as a measure of local charge correlation length. It is demonstrated that, in terms of a schematic multiperipheral model, net charge fluctuation satisfies the same Quigg-Thomas relation as satisfied by charge transfer fluctuation. Net charge fluctuations measured in finite rapidity windows depend on both the local charge correlation length and the size of the observation window. When the observation window is larger than the local charge correlation length, the net charge fluctuation only depends on the local charge correlation length, while forward-backward charge fluctuations always have strong dependence on the observation window size. Net charge fluctuations and forward-backward charge fluctuations measured in the present heavy ion experiments show characteristic features similar to those from multiperipheral models. But the data cannot all be understood within this simple model.
