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Perturbed solution of sea-air oscillator for the El Nino/ La Nina-Southern Oscillation mechanism

Acta Oceanologica Sinica 2009年第3期28卷 1-4页

作者： ZHOU Xianchun LIN Yihua WANG Hui MO Jiaqi College of Electronic and information {1. Nanjing University of information Science and Technology Nanjing 210044 China Division of Computational Science E-Institutes of Shanghai Universities at SJTU Shanghai 200240 China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China National Marine Environmental Forecastins center Beijing 100081 China Department of Mathematics Anhui Normal University Wuhu 241000 China

A class of coupled system of the E1.Nino/La Nina-Southern Oscillation （ENSO） mechanism is studied. Using the perturbed theory, the asymptotic expansions of the solution for ENSO model are obtained and the asymptotic... 详细信息

关键词： nonlinear perturbation theory E1.Nino/La Nina-Southern Oscillation model

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ANALYSIS AND MONITORING FOR EPIDEMIC SYSTEM AS A BASIS FOR CUCUMBER DOWNY MILDEW WARNING IN GREENHOUSE

ANALYSIS AND MONITORING FOR EPIDEMIC SYSTEM AS A BASIS FOR C...

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第四届智能化农业信息技术国际学术会议

作者： Chunjiang Zhao~~(1 2*) Ming Li~(1 3) Xiao Han~(1 2) Zheng Zhang~(1 2) Yan’an Wang~4 1 National engineering research center for information technology in Agriculture beijing 100097 PR china 2 Key Laboratory for information Technologies in Agriculture the Ministry of Agriculture beijing 100097 PR china 3 College of information and Electrical engineering china Agricultural University beijing 100083 PR china 4 College of life science Shandong Agricultural University Taian 271018 PR china

＜正＞Plant disease warning is a relative new concept and method system for integrated pest management. The basic of plant disease warning is epidemiology mechanistic and monitoring *** analysis of cucumber downy mildew epidemic has been proposed as the framework and criteria of early warning ***,a wide range of monitoring methods,including computer aids,for epidemic system provide foundation of establishing, operation and evaluation for early warning models. These results and approaches would prove useful in modeling and information system development for cucumber downy mildew warning.

关键词： Cucumber downy mildew greenhouse plant epidemiology monitoring epidemics waning

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一种高效和可扩展的OCSP系统

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通信学报 2003年第11期24卷 93-99页

作者：周永彬卿斯汉季庆光张振峰中国科学院软件研究所中国科学院信息安全技术工程研究中心北京100080 信息安全国家重点实验室北京100080

证书状态查询是PKI中的一个关键问题,OCSP是解决这个问题的一种重要机制。本文分析了OCSP协议的技术细节,并在此基础上设计了一种高效的、可扩展的OCSP系统。文中对该系统的关键技术和其自身的安全性问题进行了详细的论述。最后,给出了... 详细信息

证书状态查询是PKI中的一个关键问题,OCSP是解决这个问题的一种重要机制。本文分析了OCSP协议的技术细节,并在此基础上设计了一种高效的、可扩展的OCSP系统。文中对该系统的关键技术和其自身的安全性问题进行了详细的论述。最后,给出了关于OCSP机制的一些未决问题以及某些思考。

关键词：公钥基础设施 OCSP系统证书状态查询认证中心

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research on Multiple Pattern Matching {1. Based on TCAM

Research on Multiple Pattern Matching Technology Based on TC...

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201. IEEE International Conference on information Theory and information security(ICITIS 201.)

作者： Lei Guo 1. Yadi Wang 1. Qinrang Liu 2) Ke Zhu 2) 1. Zhengzhou information Science and {1. Institute Zhengzhou china 2) National Digital Switching System engineering & Technological research center Zhengzhou china

This paper studied on Deep Packet Inspection and the core technology multiple-pattern matching *** the basis of these algorithms,the paper proposed a new multiple-pattern matching algorithm which could accelerate based on *** full advantage of the property of TCAM,the algorithm could achieve better performance,and achieve the demand for line-speed when multiple pattern real time *** the algorithm has lower cost than similar algorithms.

关键词： DPI multiple-pattern matching TCAM

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ON-LINE MODELING OF AIR TEMPERATURE SYSTEM IN A NATURALLY VENTILATED GREENHOUSE

ON-LINE MODELING OF AIR TEMPERATURE SYSTEM IN A NATURALLY VE...

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第四届智能化农业信息技术国际学术会议

作者： Linlin ~1.in Gang Wu~1.Jun Wang~1.Jing Li~1.Xiaojun Qiao~2 Weihong Luo~3 1.University of Science and technology of{1. Hefei 230027 china 2 National engineering research center for information technology in Agriculture beijing 1.0097 china 3 Nanjing Agricultural University Nanjing 21.095 china

＜正＞Linear Auto-Regression Moving Average with extra input（ARMAx）model and Auto-Regressive Integration Moving Average with extra input （ARIMAx）model for air temperature system in a naturally ventilated greenhouse are developed. Outside air temperature and relative humidity,global solar radiation,and wind speed are used as disturbing input variables of the models,while inside temperature is used as output variable of the models. Statistic hypothesis test and model fits analysis are used together to select the model structure,and Gradually Oblivious Recursive Extended Least Squares（RELS）method is adopted to identify the model parameters on ***,an intelligent supervisory segment is devised to monitor and fix problems appearing during the on-line modeling *** were carried out in an experimental greenhouse to validate the *** is concluded that ARIMAx model with 4 input variables could be able to describe and predict the air temperature in the greenhouse reasonably well.

关键词： greenhouse air temperature system ARMAx model ARIMAx model on-line modeling RELS method

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The organization and scheduling of massive grid geographic data

The organization and scheduling of massive grid geographic d...

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2009 Second International Workshop on Knowledge Discovery and Data Mining

作者： Luo XianGang~1.Ma Qi~(1.2) Xie Zhong~(1.) 1.Faculty of information {1. china University of Geosciences 2 china GIS Software research and Application {1. center of the Ministry of Education

＜正＞To solve the problem of organization and maintenance of massive grid geographic data,this paper present a multi-pyramid mixed organization model basing on the research of original pyramid *** multi-pyramid model,a main pyramid could include some sub *** sub pyramid is independent and can be deployed to different *** paper also discusses the schedule method of grid data in different data organization model when grid data are displayed in the window,and achieved good effect in practice.

关键词： massive data organization scheduling pyramid model

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应用于无线传感器网络的门限环签名方案

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通信学报 2012年第3期33卷 75-81,89页

作者：肖俊芳廖剑曾贵华工业和信息化部电子科学技术情报研究所北京100040 普天信息技术研究院有限公司北京1.0080 上海交通大学电子工程系上海200030

针对节点的能量损耗、通信带宽、存储空间等有严格限制的无线传感器网络环境,基于双线性配对,本文提出门限签名方案。在假设计算Diffie-Hellman问题困难的前提下,利用规约到矛盾的方法给出在随机预言机模型下的严格安全性证明。此外所... 详细信息

针对节点的能量损耗、通信带宽、存储空间等有严格限制的无线传感器网络环境,基于双线性配对,本文提出门限签名方案。在假设计算Diffie-Hellman问题困难的前提下,利用规约到矛盾的方法给出在随机预言机模型下的严格安全性证明。此外所提的方案具备群合作条件下应有的顽健性,可以进行多签,满足分布式并行计算等特点,非常适应于无线传感器网络。

关键词：无线传感器网络配对密码术门限环签名安全性证明

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An Interactive Digital Design System for Corn Modeling

An Interactive Digital Design System for Corn Modeling

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亚洲精细农业与计算机农业应用联合大会

作者： Boxiang Xiao Xinyu Guo Xiaohong Du Weiliang Wen Xue Wang Shenglian Lu 1.0} National {1. research center for information technology in Agriculture beijing china beijing P. R. china

An interactive digital design system for corn modeling is presented in this paper. The system designed and developed based on growth model of corn, thus the digital design for corn is suitable for biological and physiological characteristics according to the natural growth process of corn. The framework is supported by agricultural knowledge model in steps: knowledge model, mathematical model, geometric model and display model. Specially, a template-based method is implemented for leaf modeling. The system is composed of several key function modules: computer graphic design, template, geometric modeling, database support, data processing and graphic user interface, and developed by C++ program language based on OpenGL graphic library. Main functions of this system includes plant type design, organs of corn model design, plant model design, corn colony design, display of colony and calculation of light distribution in plant canopy layer. As an interactive digital design tool for corn modeling, the system provides a convenient way for rapid three-dimensional data acquisition and construction.

关键词： Interactive Digital Design System Corn Modeling

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research ON FOREST FIRE PREVENTION DECISION-MAKING PLATFORM BASED ON 3S INTEGRATED {1.

RESEARCH ON FOREST FIRE PREVENTION DECISION-MAKING PLATFORM ...

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第四届智能化农业信息技术国际学术会议

作者： Yuansheng Wang~(1.2) Chunjiang Zhao~(*1.2) Jing Dong~(1.2) miao Gao~(1.2) Xingyao Hao~(1.2) Zhenkun Tian~3 1.0} National {1. research center for information technology in Agriculture 2 Key Laboratory for information Technologies in Agriculture the Ministry of Agriculture 3 china Institute of Industrial Relations

＜正＞Forest fire prevention plays an important role in forest resources *** the network environment,it is an important approach to improve the efficiency of forest fire prevention with the application of geographic information system（GIS）, global positioning system（GPS ）,remote sensing {1.（RS）and their *** paper put in order the information resources for many years in Fangshan District in beijing and established a spatial database including airscapes,remote sensing images, forest sub-compartment data,***, based on the computer language JAVA,a distributed calculating platform integrated with the 3S technologies was *** platform can not only realize the functions of forecasting forest fire danger grade,locating fire site,forecasting fire behavior,position service,commanding fire fighting and loss evaluation,but also provide the information management methods and decision -support services for forest fire archives management,fire information publishing,forest fire suppression for Fangshan Forest Bureau.

关键词： 3S integrated technology Java forest fire prevention position service policymaking support

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Construction of Convolutional Network Coding for Cyclic Multicast Networks

Construction of Convolutional Network Coding for Cyclic Mult...

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201. IEEE 2nd Symposium on Web Society

作者： Qin Guo~(1,2,3),Mingxing Luo~(1,2,3),Lixiang Li~(1,2,3),Licheng Wang~(1,2,3),Yixian Yang~(1,2,3) 1 information security center,State Key Laboratory of Networking and Switching technology, beijing University of Posts and Telecommunications,beijing 100876,china 2 Key Laboratory of Network and information Attack and Defence technology of MOE, beijing University of Posts and Telecommunications,beijing 100876,china 3 National engineering Laboratory for Disaster Backup and Recovery, beijing University of Posts and Telecommunications,beijing 100876,china.

＜正＞In this paper,we present a practical algorithm to construct the convolutional multicast network coding over any finite directed cyclic *** dual line graph of a directed cyclic graph is considered as a *** regarding the global encoding kernels in the original graph as the corresponding inputs or outputs of some subsystem and the local encoding kernels in original graph as gains of channels,we can construct the convolutional network code through randomly choosing the local encoding kernels of the directed cycles in *** using Mason formula,the construction becomes very efficient.

关键词： Convolutional network code convolutional multicast dual line graph Mason formula

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