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Design and implementation of netware network multi-user diskless self boot system design and implement
NetWare网络多用户无盘自启动设计与实施

卫国
计算机系统应用 , 2002,
Abstract: 本文在分析原有网络存在问题的基础上,从NetWare网络的目录结构规划和用户权限结构设计入手,阐述了在NETWARE4,10网络环境下实现多用户无盘自启动的设计与实施的方法和步骤.
Empirical analysis of microblog centrality and spread influence based on Bi-directional connection
微博双向“关注”网络节点中心性及传播 影响力的分析

Yuan Wei-Guo,Liu Yun,Cheng Jun-Jun,Xiong Fei,<br>卫国,刘云,程军军,熊菲
物理学报 , 2013,
Abstract: The identifying of the most influential nodes in the complex network is of great significance for information dissemination and control. We collect actual data from Sina Weibo and establish two user relationship networks based on bi-directional “concern”. By analyzing the statistical characteristics of the network topology, we find that each of them has a small world and scale free characteristics. Moreover, we describe four network centrality indicators, including node degree, closeness, betweenness and k-Core. Through empirical analysis of four-centrality metric distribution, we find that the node degrees follow a segmented power-law distribution; betweenness difference is most significant; both networks possess significant hierarchy, but not all of the nodes with higher degree have the greater k-Core values; strong correlation exists between the centrality indicators of all nodes, but this correlation is weakened in the node with higher degree value. The two networks are used to simulate the information spreading process with the SIR information dissemination model based on infectious disease dynamics. The simulation results show that there are different effects on the scope and speed of information dissemination under different initial selected individuals. We find that the closeness and k-Core can be more accurate representations of the core of the network location than other indicators, which helps us to identify influential nodes in the information dissemination network.
图像处理技术在直升机巡检输电线路中的应用综述
卫国,津莎,李宝树
电网技术 , 2010,
Abstract: 直升机巡检以其高效、准确和安全等特点逐渐成为高压输电线路巡检的重要方式。通过对直升机巡检采集到的大量航拍图像的处理和分析可以发现输电线路故障和缺陷,因此图像处理技术在电力线路巡检中具有良好的应用前景。分析了国内外直升机巡检输电线路图像处理技术的研究现状,提出了图像处理技术应用于该领域需要解决的几个主要技术问题,并探讨了可能的解决方案,最后对输电线路巡检的发展方向进行了预测,并提出该领域将可能成为研究热点。
基于航拍序列图像的输电线弧垂测量方法
卫国,李宝树,津莎,赵书涛
中国电机工程学报 , 2011,
Abstract: 弧垂是输电线路运行的一个重要参数,直接关系到电网运行的安全性和可靠性。提出了一种基于直升机巡检时采集的航拍序列图像进行弧垂测量的新方法。选取输电线路上的隔离棒作为识别目标,采用归一化互相关图像匹配算法,结合基于小波的金字塔分层搜索策略,测量出隔离棒中心在序列图像上的像素坐标;然后基于立体视觉技术对隔离棒中心的三维空间坐标进行测量;最后通过最小二乘非线性回归算法,计算出输电线的实际弧垂。实验结果表明该方法可以提高弧垂测量的效率,并且适合在复杂地理条件下应用。
Illumination Compensation Algorithm for Face Images Based on Combination of Several Algorithms
多方法结合的人脸图像光照补偿算法

ZHENG Yuan,<br>郑
计算机系统应用 , 2012,
Abstract: Combining the illumination preprocessing algorithm based on Retinex theory with two common preprocessing algorithms, which are the histogram equalization and the gamma,gray-transformation, will result in two new illumination preprocessing algorithms. According to experimental findings, the resulting algorithms significantly improve side-lighting correction. This improvement can considerably increase face detection rate under complex photo environment. At the same time, as the new methods are based on two simple preprocessing algorithms, the preprocessing efficiency is ensured.
DYNAMICS MODELING OF KOREAN PINE FOREST IN SOUTHERN LESSER XINGAN MOUNTAINS OF CHINA
小兴安岭南坡红松林动态模拟

Sang Weiguo,<br>桑卫国
生态学报 , 1998,
Abstract: 用林窗模型研究了小兴安岭南坡红松针阔混交林长期动态变化过程。通过有效性检验证明所得模型能够合理地预测森林的组成、结构和动态。以经营数据估计模型的参数后,运行模型模拟12个树种600a的演替动态,结果表明次生裸地的森林在几个世纪后能恢复到以红松为主的针叶树占优势的群落,演替呈现为树种组成差别很大的3个阶段:第1个阶段为0到70a,这时阳性先锋树种在群落中占据优势,无论树种组成,生物量,生产力,阳性树种占的比例都最大;第2个阶段为70~300a,在这个阶段中,硬阔叶树占优势,呈现了树种多样性最大的一个阶段,阳性阔叶树种还未退去,耐阴针叶树种已开始增多;第3个阶段为300a之后,针叶耐阴树种开始在群落中占据优势,并且整个群落的树种组成、生物量和生产力变化很小,林分的各种特性呈现具有一定波动的相对稳定态。
Optimization Model of Uncorrelated Asset Combination Investment and Positive Analysis
不相关资产组合投资优化模型及实证分析

Systems Engineering,<br>张卫国
系统工程理论与实践 , 1998,
Abstract: This paper studies the optimization problem uncorrelated assets combination investment. Considering the existence state of riskless asset, we set up optimization model of uncorrelated assets combinaton investment under various constraints, and present the efficient combination set as well as its caculation formalas of investment proportions.The positive analysis on Shanghai stock market showes that the investment decision method proposed in this paper is effective
On the Rhetorical Turn of the Humanities and the Critical Turn of Rhetoric
人文学科的修辞转向和修辞学的批判性转向

Qu Weiguo,<br>曲卫国
浙江大学学报(人文社会科学版) , 2008,
Abstract: 科学主义之所以能大行其道,原因就在于话语中的主体和客体张力被特定的修辞手段化解了,"修辞转向"指的就是修辞在社会现实文本化过程中的作用被人们重新认识.人文学科发生的修辞转向使一度被边缘化了的修辞学重新获得了社会现实的关联性,而批判理论和社会理论为其重新进行社会参与提供了理论基础.西方修辞学者运用社会、批判理论的一些基本概念拓展传统修辞学的内涵和方法,成功地演绎、发展出了一套与批判理论相结合的修辞学新方法,使修辞学发生了批判性转向,为古老的修辞学开辟了新的研究和实践内容,为修辞学的发展提供了新的契机.读者定位、文本的视角定位等则是转向后的修辞分析的切入点.不过值得注意的是,虽然修辞学的批判性转向大大拓展了修辞学的内涵,但它也模糊了和相关学科的界线.
TWO DIMENSIONAL FIBER OPTIC INTERFERENCE THEORY
二维光纤干涉理论

Yuan Libo,<br>立波
光子学报 , 1998,
Abstract: The output optical field interference characteristics formed by the ends of three HiBi single mode fiber is analyzed in this paper.We have established a simple theory model of two dimensional fiber optic interference.Under the condition of first order approximation,the intensity distribution formula of the two dimensional fiber optic interference field is deduced.The spatial frequency properties of the interference optical pattern are analyzed by two dimensional Fourier transformation method.Finally,related experiment results are given.
Modelling changes of a deciduous broad-leaved forest in warm temperate zone of China
暖温带落叶阔叶林动态变化的模拟研究(英文)

SANG Wei-Guo,<br>桑卫国
生态学报 , 2004,
Abstract: A warm temperate deciduous forest in Dongling Mountain of Beijing was simulated with forest gap dynamics model, FORET1, in order to predict its future changes. The model parameters were derived from both historical and currently measured data; and the model was tested against observed data. Results showed that the model simulation of forest species composition, biomass and production matched well with observed data. Model simulation of the dynamics of this warm temperate deciduous forest indicate that the changes in net primary production was clearly unregulated and extremely unstable, with a peak around 30 years and repeated patterns of dynamics in biomass production every 110 years. The patterns of temporal dynamics of this forest are comparable to other forest ecosystems worldwide.
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