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Search Results: 1 - 10 of 46171 matches for " Han-Chao Chang "
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Pixel Discontinuity Repairing for Push-Broom Orthorectified Images  [PDF]
Jyun-Yi Lai, Ming-Fu Chen, Han-Chao Chang
Journal of Software Engineering and Applications (JSEA) , 2013, DOI: 10.4236/jsea.2013.64A004
Abstract:

Pixel discontinuity in orthoimages occurs frequently due to altitude variations in the pitch and heading of an airplane, and low performance of real-time analyzing software. This study proposes a scheme to resolve pixel discontinuity. The proposed scheme includes the following steps: 1) capture images by a self-made hyperspectral imager; 2) determine the pixel locations of orthoimages using a top-down approach; 3) repair discontinuities by the Nearest Neighbor (NN) or Bilinear Interpolation (BL) approaches; and, 4) perform a dynamic range adjustment on the orthoimages, according to the maximum pixel value of the raw images and orthoimages. After applying the proposed scheme, this study found that pixel discontinuity was eliminated by both approaches, and that the software dependability and image quality were improved substantially. In addition, the computational efficiency of the NN approach was roughly two minutes faster than that of the BL due to its simpler computation. However, BL produces smoother image edges for landscapes.

Research on Access Control Based on Source of Information Flow
基于信息流源的访问控制研究

LI Wei-nan,LI Han-chao,SHI Wen-chang,
李伟楠
,李翰超,石文昌

计算机科学 , 2011,
Abstract: Due to the impact of information flow on system integrity, explored ways to enforce access control with consideration of information flow. Proposed a model for Access Control based on Source of Information Flow(ACSIE),in which, source of information flow refers to the entity that is a starting point of the flow. Source of information flow was expressed via set of users. Integrity level was described through sources of information flows. Dominance relationship of integrity levels was defined according to inclusion relationship of sets. Access control rules were constructed based on information flows. Integrity constrained subjects and constrained sets were introduced to improve adaptability of the model. Existing system information may be utilized effectively in implementing the model, hence, complexity of system configuration can be reduced,and system usability can be improved.
THOMAS-FERMI MODEL WITH SPIN ORBIT COUPLING ENERGY AND MOMENTUM-DEPENDENT POTENTIAL-ENERGY AND ITS APPLICATION TO THE ATOMIC NUCLEUS
包括自旋轨道耦合能和作为动量函数的位能在内的汤、费模型及其在原子核中的应用

LIU HAN-CHAO,
刘汉昭

物理学报 , 1960,
Abstract: 本文对于近似球对称的系统将汤、费模型推广以包括自旋轨道耦合能和作为动量和位置的函数的位能这两个因素在内。在原子核的情况下,推广的汤、费模型可以作为将布卢克勒关于核物质的理论推广到有限大原子核的一个近似的方法。本文对费米积分方程也作了相应的推广,根据推广后的费米积分方程所解出的质子的密度分布和由高能电子与原子核的散射实验所得的结果相符合。
On Convergence to Stochastic Integrals
Zheng-Yan Lin,Han-Chao Wang
Mathematics , 2010,
Abstract: Weak convergence of various general functionals of partial sums of dependent random variables to stochastic integral now play a major role in the modern statistics theory. In this paper, we obtain the weak convergence of various general functionals of partial sums of casual process by means of the method which was introduced in Jacod and Shiryaev (2003).
FURTHER INVESTIGATION ON THE ORBITAL ANGULAR MOMENTUM DISTRIBUTION IN NUCLEI AND NUCLEAR DENSITY
原子核内轨道角动量分布与核密度的进一步探讨

YANG LI-MING,LIU HAN-CHAO,
杨立铭
,刘汉昭

物理学报 , 1955,
Abstract: 一.导言 原子核内的密度分布直接地或间接地与许多实验联系着。一个较可靠的核密度分布显然将有助于核模型理论的进一步发展。近来曾有不少人企图从与核内电荷直接有关的实验来确定核内分布,这些实验不外是荷电粒子被
Gains and Losses: Realism in the New Poetry Before the Cultural Revolution
功与过:文革前十七年新诗中的现实主义

LUO Han-chao,ZHANG Li-ping,
骆寒超
,章丽萍

浙江大学学报(人文社会科学版) , 2001,
Abstract: During the 17 years before the Cultural Revolution, realism in the New Poetry followed the theoretical principle of "must-be-this-way". This ideological guideline prescribed to literary realism promoted realistic poetry writing to an unprecedented level. The extreme leftist ideology, however, directed this genre of artistic creation to the point of becoming an effective discourse for the political authority. This fall of poetic impersonalization into utilitarian conceptualization degraded realism to a mere non-creative formula.
Nonparametric Estimation of Second-Order Jump-Diffusion Model
Lin Zheng-Yan,Song Yu-Ping,Wang Han-Chao
Statistics , 2011,
Abstract: We study the nonparametric estimators of the infinitesimal coefficients of the second-order jump-diffusion models. Under the mild conditions, we obtain the weak consistency and the asymptotic normalities of the estimators.
Growth, Antimony Incorporation Behaviour and Beryllium Doping of GaAs1-ySby Grown on GaAs by Molecular Beam Epitaxy

GAO Han-Chao,WANG Wen-Xin,JIANG Zhong-Wei,LIU Jian,YANG Cheng-Liang,WU Dian-Zhong,ZHOU Jun-Ming,CHEN Hong,

中国物理快报 , 2008,
Abstract: A series of GaAs1-ySby epilayers are grown on GaAs substrates under different growth conditions. Different antimony compositions of samples withberyllium doping are obtained. A non-equilibrium thermodynamics model is used to calibrate and fit the Sb composition. Activation energy of 0.37eV for the dissociation process of Sb4 molecules is obtained. Carrier mobility and concentration of samples are influenced by the Sb composition. Quasi-qualitative analysis of mobility is used to explain the relations among Sb composition, carrier mobility and concentration. High resolution x-ray diffraction (HRXRD) rocking curves and Hall effects measurements are used to determine the crystal quality, carrier mobility and concentration.
Effect of GaAs/GaSb Combination Strain-Reducing Layer on Self-Assembled InAs Quantum Dots

JIANG Zhong-Wei,WANG Wen-Xin,GAO Han-Chao,LI Hui,YANG Cheng-Liang,HE Tao,WU Dian-Zhong,CHEN Hong,ZHOU Jun-Ming,

中国物理快报 , 2008,
Abstract:
Effects of Di-(2-ethylhexyl) Phthalate on Ovalbumin-Immunized Rat Asthma Model: A Histopathological Study
DEHP对OVA致敏大鼠哮喘模型的影响:一项组织病理学研究

YANG Guang-tao,QIAO Yong-kang,MAO Cai-xia,LI Bing,YANG Ji-wen,LIU Dan-dan,YAO Han-chao,XU Dong-qun,YANG Xu,
杨光涛
,乔永康,毛彩霞,李兵,杨继文,刘丹丹,姚汉超,徐东群,杨旭

生态毒理学报 , 2008,
Abstract: 近年来邻苯二甲酸酯污染已成为中国一个重要的环境问题. 为探讨邻苯二甲酸二乙基己酯(di-(2-ethylhexyl)phthalate,DEHP)在诱发哮喘方面的作用,及研制DEHP诱导大鼠哮喘模型,将32只Wistar大鼠随机分成4组(每组8只):生理盐水对照组、卵清白蛋白(OVA)致敏组和2个DEHP染毒组,采用OVA致敏加激发的方法制作大鼠哮喘模型. 2个DEHP染毒组大鼠每天分别进行0.7mg·kg-1和70mg·kg-1邻苯二甲酸二乙基己酯灌胃染毒,连续30d. OVA致敏组、DEHP染毒组大鼠均在第31~37天给予1% OVA雾化,诱发哮喘. 第38天取肺脏做组织切片,进行分析. 结果表明,与OVA组相比,DEHP染毒组气管壁增厚,细胞浸润增加,气道重塑,特别是在70mg·kg-1·d-1组,变化更为明显. 由此可以得出结论,邻苯二甲酸二乙基己酯可诱导哮喘模型大鼠气道重塑,在诱发哮喘发病过程中可能起到佐剂作用.
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