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Search Results: 1 - 10 of 32414 matches for " LONG Yun-fei "
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Feng Gao,Yun-Fei Hu,Jin-Long Wang
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812006125
Abstract: The molecule of the title compound, C8H3Cl2FN2, is essentially planar, with a maximum deviation of 0.018 (2) . In the crystal, π–π stacking is observed between parallel quinazoline moieties of adjacent molecules, the centroid–centroid distance being 3.8476 (14) .
New series involving the zeta function
Wu Yun-Fei
International Journal of Mathematics and Mathematical Sciences , 2001, DOI: 10.1155/s0161171201006603
Abstract: We evaluate sums of certain classes of new series involving the Riemann zeta function by using the theory of the double gamma function and a property of the gamma function. Relevant connections with various known results are also pointed out.
Recent clinical researches on diabetic gangrene in integrated traditional Chinese and Western medicine
WANG Yun-Fei
Zhong Xi Yi Jie He Xue Bao , 2004,
Research on Reliability of Knowledge-Updating in A Kind of Network Knowledge System  [PDF]
Jinghu Shen, Zhe Yin, Yun-fei Guo
Intelligent Information Management (IIM) , 2011, DOI: 10.4236/iim.2011.36026
Abstract: The definition of reliability of knowledge-updating in network knowledge resource management system (NKRM system for brief) has been given in this paper, which has important reference value to the evaluation of NKRM system. Besides, two kinds of models in NKRM system have been introduced. And one of the most common methods to improve reliability is the redundant technique. However, reliability and efficiency are inconsistent each other. By treating each knowledge as one part of the system, this paper proposes method of joint reserve of knowledge that may resolve this problem.
An Urgency Based Self-clock Start-Time Fair Queuing Packet Scheduling

Liu Wen-bo,Guo Yun-fei,Ma Hai-long,

电子与信息学报 , 2010,
Abstract: 为了克服目前GPS (Generalized Processor Sharing)类调度算法中实时应用分组的排队时延较大且不稳定的局限性,该文提出一种新的分组排队调度算法,该调度算法在计算分组服务标签时添加了一个紧急程度函数,调整了到达分组间的竞争关系,从而可以按照实时性应用的要求来调整到达分组的转发先优级,由此显著降低了实时性应用分组的排队时延和抖动幅度。分析和仿真实验表明,与GPS类其它调度算法相比,该调度算法对于实时应用的分组能提供较低的、更稳定的排队时延保证,同时还继承了GPS类算法的公平性和排队时延有界等特性,而且对系统虚拟时间的跟踪计算更为简捷高效。
Electrochemical Characterizations and Structure of Li0.99Na0.01FePO4/C as Cathode Material for Li―ion Battery
LONG Yun-Fei, WANG Fan, LV Xiao-Yan, YANG Ke-Di, WEN Yan-Xuan
无机材料学报 , 2011, DOI: 10.3724/sp.j.1077.2011.00625
Abstract: In order to improve the rate performance of lithium iron phosphate, Na+ doped LiFePO4/C cathode materials were prepared by carbothermal reduction technology. Samples were characterized by X―ray diffraction (XRD), scanning electron microscope (SEM), Fourier transfer infrared spectroscopy (FT―IR), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Their electrochemical performances were investigated by galvanostatic charge/discharge in terms of cycling performance and rate capability. The results show that the samples have well regulated olivine type structures without any impurity peaks. Na―doping improves the conductivity and the Li+ diffusion rate of composite materials and decreases the polarization of electrode, and enhances the cycling performance and rate capability effectively. Compared with LiFePO4/C, Li0.99Na0.01FePO4/C exhibits good electrode properties with discharge capacities of 147.6, 126.4 and 105.1 mAh/g at 0.5C, 2.0C and 5C rates, respectively. In addition, it has excellent cycle stability at different rates and good performance.
A Digital Phase Lock Loop for an External Cavity Diode Laser

WANG Xiao-Long,TAO Tian-Jiong,CHENG Bing,WU Bin,XU Yun-Fei,WANG Zhao-Ying,LIN Qiang,

中国物理快报 , 2011,
Realization of stimulated emission-based detector and its application to antinormally ordered photodetection

Fan Dai-He,Bai Yun-Fei,ZhangHai-Long,Chen Jun-Jian,Zhang Jun-Xiang,Gao Jiang-Rui,

中国物理 B , 2010,
Abstract: Using a stimulated parametric down-conversion process combined with a conventional detector, we theoretically propose a scheme to realize the stimulated emission-based detector, and investigate the antinormally ordered correlation function and Fano factor for the coherent field based on it. Such a detection has advantages over the normally ordered one especially when the intensity of the field is weak.
Research on the Formal Representation of Planning Problem

CHEN Ai-xiang,JIANG Yun-fei,CAI Xiao-long,

计算机科学 , 2008,
Abstract: Intelligent planning is a challenge topic on the field of artificial intelligence,and it has broad application background.The first problem in automated planning is how to formally represent the realistic planning problem.In this paper,we systematically analysis several kind of formally representation technologies such as situation calculus,STRIPS,PDDL,HTN technology,systematically discuss how to characterize the realistic planning problem formally and point out further direction to improve the current auto...
Planning of Process Action Flow with Real-time Reaction Based on Planning Graph

CHAI Xiao-long,JIANG Yun-fei CHEN Ai-xiang MAO Ming-zhi,

计算机科学 , 2009,
Abstract: The software process control with intelligence also with its computing technology is a new research direction in recent years.And it is promising that it will exert an influence on the study of software process.PARPS(Process Action Real-Time Planning System) based on planning graph was presented.It can make a planning of process action arrangement automatically.Furthermore,the algorithm of process action planning has the ability of real-time reaction.It can make a real time reaction to all kinds of real eff...
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