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Study of the influence of photon recycling on extraction efficiency in a slab Light Emitting Diode

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Study of the influence of photon recycling on extraction eff...

2.07亚洲光电子会议固态照明与太阳能技术分会场

作者： YiChen Shuai GuangHan Fan TianMing Zhou ShuWen Zheng Institute of Optoelectronic material and devices south china normal university guangzhou P.R. {2.

Photon recycling effect has significant influence on the extraction efficiency of LEDs, which active regions possess high spontaneous emission efficiency, i.e. high material quality. Therefore, the conventional definition of internal quantum efficiency should be revised as pointed out by other researchers. In this work, some more detailed considerations of photon extraction efficiency in LEDs are examined using a simple slab structure. Theoretical modeling results show that in order to improve the overall light conversion efficiency, it is necessary to remove the device substrate, to optimize the overall doping profile design, and to use highly reflective metal contacts or DBR structures.

关键词： Photon recycling extraction efficiency Light Emitting Diode.

Task allocation mechanism Based on Genetic Algorithm in Wireless Sensor Networks

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Task allocation mechanism Based on Genetic Algorithm in Wire...

2.10 The 3rd International Conference on computational Intelligence and Industrial Application (PACIIA2.10)

作者： Xiaoqing Hu and Bugong Xu College of automation science and engineering south china {2. of Technology guangzhou china

The main goals of target tracking in WSNs are, through optimizing task allocation on the premise of tracking accuracy, the communication distance can be shortened, the energy consumption can be reduced, and the lifetime of network can be prolonged. We propose a task allocation mechanism of dynamic alliance based on Genetic Algorithm to acquire the balance between the energy consumption and accuracy considered in area sum method. Simulation results show that, the proposed task allocation mechanism is reasonable and effective.

关键词： WSNs Target Tracking Area Sum Task Allocation Genetic Algorithm.

Improving Bayesian Network Structure Learning with Optimized Node Ordering

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Improving Bayesian Network Structure Learning with Optimized...

2.10 The 3rd International Conference on computational Intelligence and Industrial Application (PACIIA2.10)

作者： Lisheng Yang Qin Liao School of Mathematical Science south china {2. of Technology guangzhou Guangdong P.R.china 510640

Learning a General Bayesian Network （GBN） depends on node ordering and correlation of *** current methods are not efficient enough because of the random node ordering and not considering about the degree of independence between *** this paper,we propose a new method for structure *** introduces the degree of independence between nodes into the scoring function,and uses genetic algorithm to search for the best *** the improved scoring function and optimal ordering,the Bayesian Network for the Alert System of Industrial Boiler Security is structurally learned,and errors are *** experiment results show that our method is more efficient.

关键词： General Bayesian Network Structure learning Degree of Independence Genetic Algorithm

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光子学的内涵、发展与突破

深圳大学学报（理工版） 1995年第1期12卷 7-15页

作者：李景镇刘颂豪深圳大学应用物理系华南师范大学量子电子所

论述了光子学、光子技术的产生、发展和突破，阐明了光子学的定义、内涵、范畴和前沿，提出了关于第Ⅰ类和第Ⅱ类光子产业的设想．

关键词：光子学光子技术光子工程

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Developing the Evaluating Metrics of Mobile Multicast

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Developing the Evaluating Metrics of Mobile Multicast

2.10 International Conference on E-Health Networking, Digital Ecosystems and Technologies

作者： Luo Yuanjun1 2.1School of Computer Science & Engineering,south china {2. of Technology guangzhou,P.R.china Xiang Zhaozheng1 2.chool of Computer,Electronics and Information,GuangXi {2. Nanning,P.R.china

To further advance the popular deployment of the mobile multicast,there are still many obstacles needing to *** significant issue is to provide the quantitative evaluation of the mobile multicast to convenience the pricing and feedback control of the system,and moreover,to convenience the estimation of the mobile multicast protocol and the improvement of the more practical and optimal *** paper proposes a rudimentary two-aspect structure of the mobile multicast evaluation metrics,one is the measure standard of estimating the mobile multicast environment,the other is the measure standard of evaluating the mobile multicast *** the concepts,we also give out computational formula of the key factors of the two *** will make a fundamental basis on quantifiable measurement of mobile multicast.

关键词： evaluating metric mobile multicast environment criteria protocol criteria

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电针对血管性痴呆患者智力结构的影响

上海针灸杂志 2001年第6期20卷 6-8页

作者：莫飞智李建强储莉赖新生张家维刘颂豪华南师范大学量子电子学研究所广州510631 广东省中医院广州中医药大学

目的　探讨电针治疗血管性痴呆 (VD)的疗效及对其智力结构的影响。方法　将 6 8例 VD患者随机分为电针组和药物组 (氢化麦角碱 ,DHET) ,每组 34例。检测治疗前后长谷川痴呆修改量表(HDS- R)、社会活动功能调查 (FAQ)、老年认知功能量表 ... 详细信息

目的　探讨电针治疗血管性痴呆 (VD)的疗效及对其智力结构的影响。方法　将 6 8例 VD患者随机分为电针组和药物组 (氢化麦角碱 ,DHET) ,每组 34例。检测治疗前后长谷川痴呆修改量表(HDS- R)、社会活动功能调查 (FAQ)、老年认知功能量表 (SECF)、韦氏记忆量表 (WMS)的变化情况 ,共观察 42.d。结果　电针组上述指标的改善较药物组显著 ,其有效率为 79.41% ,而药物组为 2.0 .5 8% (P<0 .0 1)。VD患者智力呈全面低下 ,但其恢复则有快有慢。结论　提示电针疗法可促进 VD患者智能、社会活动功能的康复 ,提高生活质量 ,电针近期疗效优于药物 DHET;临床上应仔细分析 VD患者的智力结构 ,治疗和康复训练必须有的放矢。

关键词：血管性痴呆针灸疗法电针智力结构

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量子力学多媒体软件制作初探

韶关学院学报(自然科学版) 2002年第3期23卷 50-54页

作者：凌晟王笑君熊钰庆韶关学院机电系华南师范大学物理系华南师范大学物理系广东韶关512.05 广东广州510631

针对少学时量子力学课程特点 ,对量子力学多媒体辅助教学软件制作过程进行初步的研究 ,建立了整个框架并创作了部份示例 ,取得了一些初步认识

关键词：量子力学多媒体软件课件

Traffic Flow Distribution in Road Based on FEM

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Traffic Flow Distribution in Road Based on FEM

2.10 International Conference on computational Intelligence and Vehicular System (CIVS2.10)

作者： Jian-ming CUI School of Information Engineering Chang’an university Xi’an 710064 Shaanxi Province china Ya LI School of Computer Science and Educational Software {2. university {2. 510006 Guangdong Province china

In analysis of normal traffic flow,it usually uses the static or dynamic model to numerical analyze based on fluid ***,in such handling process,the problem of massive modeling and data handling exist,and the accuracy is not *** Element Method（FEM） is a production which is developed from the combination of a modern mathematics,mathematics and computer technology,and it has been widely applied in various domain such as *** on existing theory of traffic flow,ITS and the development of FEM,a simulation theory of the FEM that solves the problems existing in traffic flow is put *** on this theory,using the existing Finite Element Analysis（FEA） software,the traffic flow is simulated analyzed with fluid mechanics and the *** data processing problem of manually modeling and Numerical analysis is solved,the authenticity of simulation is enhanced.

关键词： Traffic flow,Distribution in Road FEM

Relativistic quantum effects of Dirac particles simulated by ultracold atoms

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Frontiers of physics 2012年第1期7卷 31-53页

作者： Dan-wei Zhang 张丹伟 (1) (2. Zi-dan Wang 汪子丹 (2. Shi-liang Zhu 朱诗亮 (1) 1. Laboratory of quantum Information Technology School of Physics & Telecommunication Engineering South China Normal University Guangzhou 510006 China2. Department of Physics and Center of Theoretical and Computational Physics The University of Hong Kong Pokfulam Road Hong Kong China

quantum simulation is a powerful tool to study a variety of problems in physics, ranging from high-energy physics to condensed-matter physics. In this article, we review the recent theoretical and experimental progress in quantum simulation of Dirac equation with tunable parameters by using ultracold neutral atoms trapped in optical lattices or subject to light-induced synthetic gauge fields. The effective theories for the quasiparticles become relativistic under certain conditions in these systems, making them ideal platforms for studying the exotic relativistic effects. We focus on the realization of one, two, and three dimensional Dirac equations as well as the detection of some relativistic effects, including particularly the well-known Zitterbewegung effect and Klein tunneling. The realization of quantum anomalous Hall effects is also briefly discussed.

关键词： ultracold atoms Dirac equation quantum simulation