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基于系统调用的异常入侵检测研究

计算机工程与应用 2004年第17期40卷 40-43页

作者：刘雪飞马恒太张秉权吴伯桥蒋建春文伟平南京理工大学计算机系南京210096 中科院信息安全技术工程研究中心湖南信息技术职业学院计算机系长沙610200

基于时序、频率等特性,系统调用序列已成为基于主机的入侵检测系统重要的数据源之一。通过分析系统调用序列来判断入侵事件,具有准确性高、误警率低和稳定性好等优点,目前,国际上在这方面的研究主要集中在如何设计有效的检测算法以提高... 详细信息

基于时序、频率等特性,系统调用序列已成为基于主机的入侵检测系统重要的数据源之一。通过分析系统调用序列来判断入侵事件,具有准确性高、误警率低和稳定性好等优点,目前,国际上在这方面的研究主要集中在如何设计有效的检测算法以提高检测效果。该文对目前国际上基于系统调用的异常入侵检测方面的研究进展进行了总结,对主要的检测技术进行了详细讨论和分析。

关键词：系统调用异常入侵检测时间特性频率特性

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A NEW FUZZY NEURAL NETWORK CONTROLLER APPLIED IN THE GREENHOUSE

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A NEW FUZZY NEURAL NETWORK CONTROLLER APPLIED IN THE GREENHO...

Progress of information technology in Agriculture

作者： Li Xiumei Qiao Xiaojun Ye Tao Liu Huayi National engineering research center for information technology in Agriculture Post Code: 100089 beijing china Dalian University of technology Post Code: 116024 Dalian china

＜正＞ The greenhouse system is a complex system, it has the characteristic of nonlinear, slowly change and time delay, and there is strong coupling among environment factors. Aiming at the characteristic of the greenhouse, in this paper the method of designing fuzzy neural network controller of the greenhouse are proposed, the architecture of the fuzzy neural network controller is trained by using the improved genetic algorithm, the main merit of the improved genetic algorithm is simple *** experiments show that the fuzzy control system with this fuzzy neural network controller has the features of quick response, small overshoot and steady process.

关键词： greenhouse fuzzy neural network controller improved genetic algorithm decimal coding intelligent mutation random mutation

Key issues on watershed ecological security assessment

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Science Bulletin 2007年第S2期 251-261页

作者： GAO JiXI~1 ZHANG XiangHui~(2*) JIANG Yun~1 OU XiaoKun~3 HE DaMing~4 SHI JianBin~5 1 chinese research academy of Environmental sciences,beijing 100012,china 2 Civil and Environmental engineering School,University of Science and technology beijing,beijing 100083,china 3 School of Resource Environment & Earth Science,Yunnan University,Kunming 650091,china 4 Asian International River center,Yunnan University,Kunming 650091,china 5 EU-china Biodiversity Programme,beijing 100044,china

Based on analyses of key issues concerning watershed ecological security assessment including the subject,content,and methodology of assessment,this paper points out that ecological security should be assessed dynamically at different levels(*** and ecosystem levels)with human being as the main assessment *** the functional security and the structural security must be consid- ered in watershed ecological security *** order to reflect the overall and timely security status of the watershed,the PSR(pressure-state-response)method should be *** Range-Gorge Region(LRGR)was researched as an *** index system of watershed ecological security assessment has been proposed,which includes structural index,functional index,pressure and response index,and the state of ecological security is analyzed for LRGR in Yunnan Province.

关键词： ecological security assessment Longitudinal Range-Gorge Region

Design and Implementation of Quality Traceable Label for Cereal and Oil Products Based on UCC/EAN-128 Bar Code

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Design and Implementation of Quality Traceable Label for Cer...

亚洲精细农业与计算机农业应用联合大会

作者： ZHENG Huoguo, LIU Shihong, HU Haiyan, MENG Hong, SU Xiaolu Agricultural information Institute, chinese academy of Agricultural sciences, beijing 100081,china

Food quality safety management is one of the hottest issues around the world in recent years. Global food industry, customers and governments in many countries are putting increasing emphasis on food quality safety management. Food traceability system has become an effective way in food quality safety management. The food traceability system has achieved origin, processing, detecting, quality and safety management and other functions. The system will not only meet the day-to-day management and internal tracing needs for enterprises, but also provide services for consumers and supervisors by means of SMS, telephone, network and mobile portable-terminal. The traceability code, which is also known as quality safety code, is the unique identification of cereal and oil products. In the traceability system, all of the quality and safety information of the products can be obtained through this code from the database of quality safety elements. In order to carry out quality safety tracing for the cereal and oil products through the traceability code along with the traceability system, this article design the encode principles for the cereal and oil products based on the in-depth study of the *** system and the characteristics of cereal and oil products’ production and processing,. The traceability code consists of five parts, including enterprise identification number, commodity identification number, batch number and two kinds of verifying number. Compared to the animal products, fruits products, vegetables products and other agricultural products, cereal and oil products have long production chain and involved many factors, which can’t identification individual as animal products, can’t identification producer of raw materials as fruits and vegetables products. In this paper, we also design the bar code for the cereal and oil products, which pasted in the products, according to the relevant state standards, generate the traceability label automatically using the compo

关键词： Cereal and oil products Aceability Aceability encoding R code

research on Extracting Forest Stand information based on 3D Laser Scanner Techniques

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Research on Extracting Forest Stand Information based on 3D ...

2012 IEEE International Conference on Computer Science and Automation engineering（CSAE 2012）

作者： LU Kangning 1 ZHANG Huaiqing 2 GAO Shizeng 3 JIANG Xian 4 research Institute of Forestry Resource information Techniques chinese academy of Forestry beijing china WU Xueming 1 ZHANG Ning 2 KUANG Yilong 3 research center of Forestry Remote Sensing & information engineering Central South University of Forestry & technology Changsha Hu’nan china

The development of laser scanning technology provides a new way to make people obtain spatial information from the traditional manual to *** this study,we take the FARO Laser Scanner Photon as the data obtained platform,we scanned a 10 m×15 m plot,total 20 trees in Pinus bungeana ***,extract every tree’s data from the point cloud and measure the tree height and diameter at breast height（DBH）.After make accuracy precision and correlation analysis with the measured data,it is showed that the method mentioned can be satisfied the accuracy requirement of forest investigation and can be used to measure the tree height and *** with traditional technology,the applications of 3D laser scanning technique have a broad development space on tree measuring.

关键词： Stand Laser Scanner Point Clouds Accuracy Precision

An Audio Zero-Watermark Scheme Based on Energy Comparing

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china Communications 2014年第7期11卷 110-116页

作者： YANG Yu LEI Min CHENG Mingzhi LIU Bohuai LIN Guoyuan XIAO Da information security center Beijing University of Posts and Telecommunications Beijing China College of information engineering Beijing Institute of Graphic Communication Beijing China National engineering Laboratory for Disaster Backup and Recovery Beijing China School of Computer Science and technology China University of Mining and Technology China

Zero-watermark technique,embedding watermark without modifying carriers,has been broadly applied for copyright protection of ***,there is little research on audio *** paper proposes an audio zero-watermark scheme based on energy relationship between adjacent audio *** use of discrete wavelet transformation(DWT),it gets power approximations,or energies,of audio ***,it extracts the audio profile,*** zero-watermark,according to the relative size of energies of consecutive *** experimental results demonstrate that the proposed scheme is robust against general malicious attacks including noise addition,resampling,low-pass filtering,etc.,and this approach effectively solves the contradiction between inaudibility and robustness.

关键词： zero-watermark audio water-marking scheme energy comparing

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EXTRACTION OF BIOCHEMICAL COMPONENTS IN WINTER WHEAT BY CANOPY HYPERSPECTRUM

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EXTRACTION OF BIOCHEMICAL COMPONENTS IN WINTER WHEAT BY CANO...

Progress of information technology in Agriculture

作者： Huang Wenjiang Wang Jihua Liu Liangyun Zhao Chunjiang Huang Muyi Wang JindiNational engineering research center for information technology in Agriculture beijing Post Code:100089 chinaresearch center for Remote Sensing and GIS beijing Normal University beijing Post Code:100875 china

＜正＞ Winter wheat canopy spectrum is affected by wheat canopy （leaf area index, leaf biochemical components, leaf angle distribution,canopy shadows, et al.）, soil, weeds, environment and their interactions. So the uncertainties for crop canopy spectral information become a fatal problem for the canopy biochemical and biophysical variables extraction. Recent studies have demonstrated the application of spectral indices from hyperspectral data for crop biochemical and biophysical variables. These indices are the compositive response to variations of several vegetation and environmental properties. Canopy chlorophyll content, an indicator of photosynthesis activity, which is related the nitrogen concentration in green vegetation and serves as a measure of the crop response to nitrogen application. The combination of NDVI and PRI can reduce the effect of LAI and soil background. The index （CCII） was proved to be sensitive to chlorophyll concentration and very resistant to the variations. This paper introduced the application of the ratio TCARI/OSAVI to make accurate predictions of winter wheat chlorophyll content under different varieties, and the application of SIPI for canopy biochemical indicators inversion by minimizing foliar inner structure effect. It indicated that the canopy chlorophyll content and nitrogen concentration could be evaluated by some new combination vegetation indices.

关键词： winter wheat canopy spectrum uncertainties information extraction

research on Quaternion Spline Interpolation Algorithm for 5-axis Machining

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Research on Quaternion Spline Interpolation Algorithm for 5-...

2009 ISECS International Colloquium on Computing, Communication, Control, and Management

作者： Peinan Li1,2,3 1 College of Computing&Communication engineering, Graduate University of the chinese academy of sciences,beijing,100049,china. 3 MSI research Institute,Wolfson School of Mechanical and Manufacturing engineering,Loughborough University,Loughborough,LE11 3TU,UK.Ruifeng Guo1,2 2 Shenyang Institute of Computing technology,chinese academy of sciences,National engineering research center For High-end CNC,Shenyang 110171,china.

Applications for 5-axis have increased tremendously in recent *** curved surfaces using CNC software represents a challenging *** conventional interpolation algorithms for 5-axis CNC machining are focused on studying a curved surface is approximated by a linear grid of closely spaced points,which are traversed in a linear or circular interpolation mode to machine the desired shape. However,it can not only cause machining path error,but also cause a lot of wear and tear on the *** overcome these problems,a research on interpolation algorithm for 5-axis tool paths generated using quaternion-quintic spherical Bézier spline for tool positioning and orientation was presented In this *** proposed algorithm was verified by Matlab *** analysis of results was also provided in this *** proposed algorithm is suitable for 5-axis high- speed and high-precision machining.

关键词： spline interpolation quaternion 5-axis machining

Advancement of Scientific Knowledge Output Management in chinese academy of sciences Based on Institutional Repositories Network

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Advancement of Scientific Knowledge Output Management in Chi...

2010 3rd IEEE International Conference on Computer Science and information technology—ICCSIT 2010

作者： Jianxia Ma Zhongming Zhu Cold and Arid Regions Environmental and engineering research Institute chinese academy of sciences Lanzhou china Linong Lu Wei Liu Denglu Wu The Lanzhou Branch of the National Science Library CAS Scientific information center for Resources and Environment CAS Lanzhou china

This paper describes the design and implementation of scientific knowledge output management based on institutional repository in chinese academy of *** aim,general function of institutional repository,plan,policy and sustainable supporting mechanism of scientific knowledge output management,the development of federated institutional repositories network based on OAI-harvester and the redesign of the scientific knowledge output system,driven by scientific workflow,integrated with organization,management,publication,reuse of compound digital object are introduced.

关键词： scientific knowledge output management institutional repositoty scientific workflow compound digital object