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Search Results: 1 - 10 of 69296 matches for " GU Wen-yan "
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A Unique Perspective on Data Coding and Decoding
Wen-Yan Wang
Entropy , 2011, DOI: 10.3390/e13010053
Abstract: The concept of a loss-less data compression coding method is proposed, and a detailed description of each of its steps follows. Using the Calgary Corpus and Wikipedia data as the experimental samples and compared with existing algorithms, like PAQ or PPMstr, the new coding method could not only compress the source data, but also further re-compress the data produced by the other compression algorithms. The final files are smaller, and by comparison with the original compression ratio, at least 1% redundancy could be eliminated. The new method is simple and easy to realize. Its theoretical foundation is currently under study. The corresponding Matlab source code is provided in? the Appendix.
Some Traveling Wave Solutions of a Hyperbolic Model for Chemotaxis in 1-D
Qin Zhang,Wen-yan Chen
ISRN Applied Mathematics , 2011, DOI: 10.5402/2011/137406


物理学报 , 1987,
Abstract: 本文报道沿与光轴成90°方向拍摄的2ω0谐波时间分辨光谱。谐波的主峰与次峰是由许多细而亮的条纹组成,对此我们作了理论分析。

GU Jian-Zhong,QIAN Rong,YIN Wen-Yan,WANG Chuang,SUN Xiao-Wei,

红外与毫米波学报 , 2006,
Abstract: 提出了一种改进型螺旋微带谐振单元(SCMRC)的结构.该改进型螺旋微带谐振单元具有微带并联开路线,在低频通带内通过设计达到50Ω的端口阻抗.同时,并联的微带开路线在SCMRC结构的禁带中谐振,来实现更强的慢波效应和更宽的禁带.实际设计、制作和测试了该改进型螺旋微带谐振单元,该滤波器在低频通带内具有低插入损耗、改善的回波损耗,以及在较小面积下的宽禁带.
Imaging Study of Joint Space Changes in Unilateral Temporomandibular Joint Synovitis.

吕曜光, 邵博, 贾梦莹, 辜文妍, 龚忠诚
LV Yao-guang
, SHAO Bo, JIA Meng-ying, GU Wen-yan, GONG Zhong-cheng

- , 2018, DOI: 10.13701/j.cnki.kqyxyj.2018.03.008
Abstract: 摘要 目的: 探讨单侧颞下颌关节滑膜炎患者双侧关节间隙的闭口位关节曲面断层片特征。方法: 收集新疆医科大学第一附属医院颞下颌关节专病门诊诊断为单侧颞下颌关节滑膜炎患者27例,使用数字化曲面断层X片机记录患者在牙尖交错位时双侧颞下颌关节矢状位曲面断层片,使用软件CliniView9.2重建,并测量颞下颌关节髁突的前、上、后间隙距离,健侧与患侧相互比较。结果: 患侧的前、上、后髁突间隙较患侧分别增宽约32.46%、64.62%、55.05%。不对称指数结果显示,上间隙对造成髁突间隙不对称影响较大,单侧颞下颌关节滑膜炎患者的患侧髁突前、上、后间隙均明显大于健侧(P<0.05)。结论: 单侧颞下颌关节滑膜炎患者的患侧髁突间隙均比健侧增宽,且上间隙对双侧关节间隙的对称程度影响较大
Correlation between Unilateral Posterior Scissors-bite, Joint Clicking Symptoms, and Surface Electromyography of Masticatory Muscle

贾梦莹, 邵博, 辜文妍, 陈青立, 吕曜光, 龚忠诚
JIA Meng-ying
, SHAO Bo, GU Wen-yan, CHEN Qing-Li, LV Yao-guang, GONG Zhong-cheng

- , 2018, DOI: 10.13701/j.cnki.kqyxyj.2018.03.012
Abstract: 摘要 目的: 探讨单侧后牙正锁牙合、关节弹响与咀嚼肌电活动的相关性。方法: 分别收集新疆医科大学大学生单侧后牙正锁牙合组人数40例,单侧关节弹响组人数40例,无关节弹响的个别正常牙合人数40例,分别记录各组下颌姿势位(mandibular postural position,MPP)及牙尖交错位(intercuspal position,ICP)紧咬时双侧颞肌前束(temporal anterior muscle,TA)及咬肌(masseter muscle,MM)的表面肌电值(surface electromyography,SEMG),并计算出咀嚼肌不对称指数,单侧后牙正锁牙合组、单侧关节弹响组均与无关节弹响的个别正常牙合组比较研究。结果: 单侧后牙正锁牙合组锁牙合侧MMP时TA与MM较正常组均有较弱的肌电活动(P<0.05),非锁牙合侧与正常组差异无统计学意义,锁牙合侧咀嚼肌肌电均较非锁牙合侧高(P<0.05)。单侧后牙正锁牙合组ICP紧咬时锁牙合侧TA及MM肌电活动均较正常组及非锁牙合侧弱。锁牙合组咀嚼肌不对称指数均大于个别正常牙合组。单侧磨牙正锁牙合组较单侧前磨牙正锁牙合组在MMP及ICP咀嚼肌不对称指数高(P<0.05)。单侧关节弹响组在MMP及ICP紧咬时与个别正常牙合组比较咀嚼肌肌电均无统计学差异。结论: 锁牙合与咀嚼肌肌电变化有关,关节弹响与咀嚼肌肌电变化无关
Key agreement scheme based on GDH for virtual dynamic subgroup group

LIU Wen-yan,

计算机应用 , 2007,
Abstract: Key agreement is usually mentioned in general static group.Based on virtual dynamic subgroup,Agreed Virtual Dynamic Subgroup Scheme (AVDSG) was proposed,which can manage the virtual dynamic subgroup by using the key information of the group.Compared with GDH,it can largely reduce the average cost of re-keying and the number of keys held by each user.
A New Defected Ground Structure and its Application for Miniaturized Switchable Antenna
Jingxian Liu;Wen-Yan Yin;Sailing He
PIER , 2010, DOI: 10.2528/PIER10050904
Abstract: A new defected ground structure (DGS) is firstly proposed in this paper, which has better slow-wave effect than that of cross or dumbbell one. Using the model of transmission line, its equivalent parameters are extracted. With good omni-directional properties, the proposed DGS is then used in the design of a proximity coupled antenna for its miniaturization. The size of the developed antenna is about 68% smaller than that of the conventional one. Further, two artificial cells are added on the feed line to reduce the protrudent stub length from 26.9mm to 18.94 mm. With the utility of the DGS and artificial cells, the size of proximity coupled antenna is reduced significantly. By introducing a PIN diode at the end of feed line, the antenna is switchable in both - and -direction linear polarizations. Such miniaturization in antenna size has little negative effect on its cross polarization, with both simulated and experimental results presented for comparison.
A Novel Dielectric Conformal FDTD Method for Computing SAR Distribution of the Human Body in a Metallic Cabin Illuminated by an Intentional Electromagnetic Pulse (Iemp)
Ling-Yu Kong;Jian Wang;Wen-Yan Yin
PIER , 2012, DOI: 10.2528/PIER11112702
Abstract: One novel dielectric conformal finite-difference time-domain (FDTD) method is proposed for computing specific absorption rate (SAR) distribution over the human body model in one metallic cabin with some windows on its wall. It is based on the concept of area average, which is different from other traditional conformal FDTD schemes. Our developed algorithm is verified by calculating both point and average SARs of dielectric sphere and human head models illuminated by an intentional electromagnetic pulse (IEMP), respectively, and CST Microwave Studio (MWS) also used for validating its accuracy. Numerical calculations are further performed to show the average SAR distribution over the human body model for different IEMP incidences, where the cabin door is opened or closed. The effects of E-field amplitude, direction and polarization of the incident IEMP on the SAR distributions are characterized in detail. We would like to say that this study will be useful for further electromagnetic protection for some persons working in high power radiation environment.
Transfer Function and Compact Distributed Rlc Models of Carbon Nanotube Bundle Interconnets and Their Applications
Jiang-Peng Cui;Wen-Yan Yin
PIER , 2010, DOI: 10.2528/PIER10031011
Abstract: According to the derived transfer function using different orders of approximation, stability and signal transmission analysis of a driven metallic single-walled carbon nanotube (SWCNT) bundle interconnect are performed. It is shown that as the length of SWCNT bundle interconnect increases, the poles will be closer to the imaginary axis, which causes the transmitted signal response tends to be more damping. Using the fourth-order approximation of the transfer function, the transmitted pulse waveform along the SWCNT bundle interconnect is captured accurately, with signal overshoot and time delay examined. Further, a complete physical model for the transient response of carbon nanotube bundle interconnect is derived, which can also accurately predict the transient response of carbon nanotube bundle interconnect including time delay and crosstalk.
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