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Search Results: 1 - 10 of 33741 matches for " NIE Yue-ping "
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Study on Automatic Extraction of Grand Canal Based on SPOT-5 Image

YU Li-jun,NIE Yue-ping,

遥感技术与应用 , 2008,
Abstract: 京杭大运河是世界上开凿最早、距离最长的运河,是活着的、流动的重要人类遗产,作为南北交通大动脉的运河,在历史上曾起过巨大作用,是物质文化遗产、非物质文化遗产和自然遗产的结合体,只有切实保护好运河,才能实现大运河成为世界文化遗产的宏伟目标.京杭大运河时空跨度大,采用传统的方法很难对其进行普查;遥感凭借其先进、便捷、经济的特点在现代考古中发挥着日益明显的作用,逐渐成为考古研究的一种重要手段,它记录了不同历史进程中运河的分布和周边现状.分析了运河在SPOT5影像上的光谱及空间特征,将遥感和GIS方法相结合,采用决策树方法实现了自动提取,并对结果精度进行了定性和定量的评估.京杭大运河自动提取可以为大运河申遗提供信息资料,为大运河保护规划提供决策支持.
Applications and Development of archaeological remote sensing Technology in China

NIE Yue-ping,YANG Lin,
,杨 林

遥感学报 , 2009,
Abstract: Archaeological remote sensing is the archeological research using remote sensing data as data sources, and at present it is mainly used to investigate the distribution of archaeological sites and predict the existence of above ground or the underground ancient relics and their distribution pattern of detection, the space mapping of the ancient ruins, and the virtual recovery of ancient monuments and their background. Remote sensing technology is able to quickly and efficiently find the distribution of information of ground and underground ancient relics. It plays a significant role in the present archaeological research, and has increasingly become an essential process in large-scale archaeological investigation, especially pre-site inspection. Significant progress has been made in archaeological field investigation due to the rapid development of remote sensing technology, as well as the emerging of the new goals of archeology, the new needs and the applications of remote sensing technology. This article reviews the history of archaeological remote sensing, and introduces the advantages and roles of remote sensing technology in the detection of large-scale sites, and some research instances such as the current archaeological remote sensing and virtual archaeological research, and finally surveys the problems in the development of archaeological remote sensing.
Study on the Construction of Land Use Database of |Grand Canal Based on Remote Sensing Images

LIN Guo-tian,WANG Chang-lin,NIE Yue-ping,CHENG Yi,

遥感技术与应用 , 2009,
Abstract: 在京杭大运河的影像数据库基础之上,以SPOT5影像为主要数据,首先,进行图像处理如几何纠正、图像融合、图像镶嵌;然后分地区建立不同类型的影像解译标志库;在此基础上进行人机交互解译;解译完之后进行矢量化后处理,检查数据的质量,接着执行图层拼接与接边处理的操作,最后利用ArcCatalog工具完成数据的入库,构建京杭大运河沿线2 km范围内1:5万精度的土地利用数据库.结果显示,采用上述技术路线进行数据库的建设是行之有效的,它具有周期短、效率高、准确等特点.
Applications of remote sensing technique in archaeology: a review

DENG Biao,GUO Hua-dong,WANG Chang-lin,NIE Yue-ping,
邓 飚

遥感学报 , 2010,
Abstract: Remote sensing technique is able to quickly detect the distribution of the sites above and below the ground, and plays a constructive role in the present archaeological work, so it becomes an important tool for archaeological investigations. This article presented the fundamental principles of the remote sensing technique in detection of sites, and then listed comprehensively the general methods used and some successful applications, and finally reviewed the its functions, constraints and future development.
Extraction of the Great Wall Information from Remote Sensing Imagery

YIN Ning,WANG Chang-lin,NIE Yue-ping,YANG Lin,

遥感学报 , 2005,
Abstract: The famed Great Wall of China stretches some 3,000 kilometers (1,850 miles). High-resolution satellite remote sensing provides cheap and quick data resources for delineating the Great Wall. In this paper, the remote sensing mechanism and spectral characteristics of the Great Wall segment in remote sensing imagery were analyzed. Due to the similar spectral response feature of Great Wall to road and sand, threshold for bands is not an effective method for the extraction of Great Wall. Thus, A gray-slope algorithm is introduced, which can extract Great Wall information effectively and easily. Due to the extensive destroy to the Great Wall, it is only 1 or 2 pixels wide in IKONOS imagery. And the gray level between Great Wall and other objects around it is very different, that is, the change of gray level along Great Wall is greater than that of road and sand. Based on these two characteristics and bands threshold, the gray-slope method makes road and sand separated from the Great Wall easily. Yulin County in Shan'xi Province is selected as a case study area, and IKONOS imagery is used as a data source. The result is satisfied when this method is applied to identify the Ming Great Wall submerged in the Maowusu desert. However, the universality of this algorithm needs to be tested further in other areas as the spatial characteristics and spectral response of Great Wall may vary.
Study on synchrony of two uncoupled neurons under the neuron’s membrane potential stimulation  [PDF]
Yue-Ping Peng, Jue Wang, Quan-Xing Miao, Hong-Yan Lu
Journal of Biomedical Science and Engineering (JBiSE) , 2010, DOI: 10.4236/jbise.2010.32021
Abstract: The input current of two uncoupled Hindmarsh-Rose neurons under different initial conditions is modulated by the membrane potential of the Hindmarsh- Rose neuron; and the synchronization characteristics of the two uncoupled neurons are discussed by analyzing their membrane potentials and their inter spike interval (ISI) distribution. Under the stimulation of the neuron’s membrane potential whose discharge pattern is period or the chaos, the two uncoupled neurons under different initial conditions, whose parameter r (the parameter r is related to the membrane penetration of calcium ion, and reflects the changing speed of the slow adaptation current) is different or the same, can realize the full synchronization (state synchronization) or discharge synchronization (phase synchronization), and can only be synchronized to the discharge pattern of the stimulation neuron. The synchronization characteristics are mainly related to the discharge pattern and the strength of the stimulation neuron’s membrane potential, and are little related to the parameter r and the initial state of the two uncoupled neurons. This investigation shows the characteristics of the neuron’s membrane potential affecting the synchronization process of neurons, and the neurons’ discharge patterns and synchronization process can be adjusted and controlled by the discharge pattern and the strength of the stimulation neuron’s membrane potential. This result is helpful to study synchronization and encode of many neurons or neural network.
Physical and Chemical Properties of TiOxNy Prepared by Low-Temperature Oxidation of Ultrathin Metal Nitride Directly Deposited on SiO2

HAN Yue-Ping,HAN Yan,

中国物理快报 , 2009,
Abstract: Physical and chemical properties of titanium oxynitride (TiOxNy) formed by low-temperature oxidation of titanium nitride (TiN) layer are investigated for advanced metal-oxide-semiconductor (MOS) gate dielectric application. TiOxNy exhibits polycrystalline properties after the standard thermal process for MOS device fabrication, showing the preferred orientation at 200]. Superior electrical properties of TiOxNy can be maintained before and after the annealing, probably due to the nitrogen incorporation in the oxide bulk and at the interface. Naturally formed transition layer between TiOxNy and SiO2 is also confirmed.
Effects of Antennas and Propagation Channels on Synchronization Performance of a Pulse-Based Ultra-Wideband Radio System
Zhiming Chen;Yue-Ping Zhang
PIER , 2011, DOI: 10.2528/PIER11011503
Abstract: Synchronization performance of a pulse-based ultra-wideband (UWB) system is investigated by taking into account of distortions caused by transmitter and receiver antennas and wireless propagation channels in different environments. The synchronization scheme under consideration can be achieved in two steps: a slide correlator and a phase-locked loop (PLL)-like fine tuning loop. Effects of the non-idealities are evaluated by analyzing the distortion of the received UWB pulse and subsequently the synchronization performance of the pulse-based UWB system. It is found that generally a smaller step is required for the sliding correlator due to distortions introduced by the antennas and channels. However, the fine tuning loop can always be stabilized by adjusting the loop parameters. Therefore, synchronization can always be achieved.
Quantum key relay protocols between any terminals in Internet

XU Ren-feng,XIAO Zheng-xing,LI Yue-ping,NIE Zhe,WEN Xiao-jun,
,肖正兴,李粤平,聂 哲,温晓军

计算机应用研究 , 2013,
Abstract: This paper proposed the concepts and protocols of quantum key relay. Using quantum entanglement properties or quantum teleportation, quantum key sharing between the two non-adjacent terminal equipments can be achieved, i. e. , quantum key relay, and ultimately achieve the quantum secret sharing between any terminals in the Internet, furthermore, they had the unconditional security.
Limit sets and commensurability of Kleinian groups
Wen-yuan Yang,Yue-ping Jiang
Mathematics , 2010, DOI: 10.1017/S0004972710000146
Abstract: In this paper, we obtain several results on the commensurability of two Kleinian groups and their limit sets. We prove that two finitely generated subgroups $G_1$ and $G_2$ of an infinite co-volume Kleinian group $G \subset \Isom(\mathbf{H}^3)$ having $\Lambda(G_1) = \Lambda(G_2)$ are commensurable. In particular, it is proved that any finitely generated subgroup $H$ of a Kleinian group $G \subset \Isom(\mathbf{H}^3)$ with $\Lambda(H) = \Lambda(G)$ is of finite index if and only if $H$ is not a virtually fiber subgroup.
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