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2007 IEEE International Workshop on Anti-counterfeiting,Security,Identification

作者： Guangzhao Cui (1. Limin Qin (1. Yanfeng Wang (1.2) Xuncai Zhang (2)(1. college of{1. information engineering Zhengzhou university of Light Industry Zhengzhou 45.002 China(2) Department of Control Science and engineering Huazhong university of Sci. and Tech. Wuhan 430074 China

DNA computing is a new method of simulating biomolecular structure of DNA and computing by means of molecular biology technological computation. It introduces a fire-new data structure and calculating method, providing a new way for solving the NP-complete problem. It is a new computational method by harnessing the enormous parallel computing ability and high memory density of bio-molecules, which brings potential challenges and opportunities to traditional cryptography. DNA cryptography is a new field of cryptography arising with DNA computing research in recent years. It can realize several security technologies such as Encryption, Steganography, Signature and Authentication by using DNA molecular as information medium. We firstly introduce the basic idea of DNA computing, and then discuss the information security technology in DNA computing.

关键词： DNA DNA computing DNA-Based Cryptography information security technology

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基于知识点协同的生产信息集成体系模型研究

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计算机工程与应用 2003年第5期39卷 57-59页

作者：钱旭陈玉霞彭苏萍中国矿业大学(北京校区)机电与信息工程学院北京100083 中国矿业大学(北京校区)管理学院北京100083 中国矿业大学(北京校区)资源学院北京100083

对煤炭生产信息集成系统的研究从纵向和横向两个方面进行。以纵向的观点,在煤炭生产信息集成系统的设计与开发中,引入供应链的思想,通过一条供应链将原料获取、生产、产品销售信息贯穿在一起;以横向的观点,建立在该供应链上的各相关节... 详细信息

对煤炭生产信息集成系统的研究从纵向和横向两个方面进行。以纵向的观点,在煤炭生产信息集成系统的设计与开发中,引入供应链的思想,通过一条供应链将原料获取、生产、产品销售信息贯穿在一起;以横向的观点,建立在该供应链上的各相关节点的信息集成可以通过知识点聚集利用计算机协同工作、人工智能、数据库等技术实现信息的综合集成,能用计算机可以识别的信息进行描述与表示。

关键词：知识点协同生产信息集成体系模型供应链知识点聚集 CSCW 煤炭企业信息综合集成市场竞争企业信息系统

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维普期刊数据库

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Switched Reluctance Motors Drive for the electrical Traction in Shearer

Switched Reluctance Motors Drive for the Electrical Traction...

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CES/IEEE 5.h International Power Electronics and Motion Control Conference

作者： H. Chen college of{1. and electrical engineering China university of Mining & Technology Xuzhou 221.08 China

＜正＞The paper presented the double Switched Reluctance motors parallel drive system for the electrical traction in shearer. The system components, such as the Switched Reluctance motor, the main circuit of the power converter and the controller, were described. The control strategies of the closed-loop rotor speed control with PI algorithm and balancing the distribution of the loads with fuzzy logic algorithm were given. The tests results were also presented. It is shown that the relative deviation of the average DC supplied current of the power converter in the Switched Reluctance motor 1.and in the Switched Reluctance motor 2 is within ±1.%.

关键词： switched reluctance motor control shearer coal mine electrical drive

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基于开闭环迭代学习位置调节的直线伺服系统

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微电机 2010年第2期43卷 54-57页

作者：曹勇蓝和慧李华德辽宁工业大学电气工程学院锦州121001 北京科技大学信息工程学院北京100083

针对磁场定向矢量控制下的永磁直线同步电机伺服系统,提出开闭环迭代学习位置调节器,实现参考位置信号的准确跟踪控制。详细分析了开闭环迭代学习位置调节下的直线伺服系统结构与数学模型。给出直线伺服系统位置调节器结构及带有遗忘因... 详细信息

针对磁场定向矢量控制下的永磁直线同步电机伺服系统,提出开闭环迭代学习位置调节器,实现参考位置信号的准确跟踪控制。详细分析了开闭环迭代学习位置调节下的直线伺服系统结构与数学模型。给出直线伺服系统位置调节器结构及带有遗忘因子的开闭环迭代学习位置调节算法。方波位置跟踪及突加负载实验结果表明,开闭环迭代学习控制具有系统响应速度快,位置跟踪准确的特点,同时可以有效保证受扰状态下的鲁棒性能。

关键词：直线伺服开闭环迭代学习位置调节

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维普期刊数据库

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THE DESIGN OF PRECISION IRRIGATION SYSTEM BASED ON WIRELSS SENSOR NETWORK AND FUZZY CONTROL

THE DESIGN OF PRECISION IRRIGATION SYSTEM BASED ON WIRELSS S...

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亚洲精细农业与计算机农业应用联合大会

作者： Zhang Wei 1.2 He Yong 1.Qiu Zhengjun 1.Cao Jian 2 Qian Suxiang 2 Lu Jianzhong 3 Jin Jianfang 3 1.college of Biosystems{1. and Food Science Zhejiang university Hangzhou China 2 Mechanical & electrical{1. college Jiaxing university Jiaxing China 3 Service Center of agricultural Technology Fengqiao Town Jiaxing China

Precision irrigation is an important practice in water-saving agriculture cropping system which allows producers to maximize their productivity while saving water. And the major concerns are precisely determining the crop water requirement and the proper strategy of irrigation, and reach real-time and automatic irrigation with proper quantities of water and in place of need. Taking these concerns into consideration, a precision irrigation system based on wireless sensor networks （WSN） and fuzzy control technology was designed in this paper. The ZigBee-WSN was used to transmit the irrigation control signal, the soil water potential signal and micrometeorological information including air temperature, relative humidity, solar radiation, wind velocity and so on. The soil water potential and crop evapotranspiration calculated using the FAO{1. Penman-Monteith equation were taken as input variables of fuzzy controller, and the multiple-factor control rule database was established for the fuzzy irrigation control system. The test results show that the system has many advantages, such as economic, practical, with high communication reliability and control accuracy. Especially, this system is quite appropriate for medium and small-sized precision irrigation area.

关键词： Irrigation Wireless Sensor Networks Fuzzy Control ZigBee

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A MODEL TO PREDICT SHELF-LIFE LOSS OF HORTICULTURAL PRODUCE DURING DISTRIBUTION WITH FLUCTUATED TEMPERATURE AND VEHICLE VIBRATION

A MODEL TO PREDICT SHELF-LIFE LOSS OF HORTICULTURAL PRODUCE ...

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The Second IFIP International Conference on Computer and Computing Technologies in Agriculture (CCTA2008)

作者： Weiwei Gong1.Daoliang Li2 Xue Liu2 Jun Yue 2 3 Zetian Fu 1.* 1.college of Economics and Management China Agriculture{1. beijing P. R. China 1.0083 2 college of {5. and electrical engineering China Agriculture{1. beijing P. R. China 1.0083 3 college of Management Ludong{1. Yantai Shandong Province P. R. China 264025

Fresh fruits and vegetables has become a public concern from the food security aspect. And the prediction of shelf-life loss under the fluctuated temperature becomes one of the key problems in food supply chain operation. So this paper identifies the impact aspects of produce decaying during distribution. For the key temperature factor, the process is divided into three phases: sorting, traveling and door-opening. Based on time-temperature function, a model of shelf-life loss of horticultural produce during distribution is developed by evaluating respiration rate of vegetables and fruits considering both the environment fluctuated temperature and vehicle vibration during traveling. Taking eggplant as an example, the numerical experiment result demonstrates that the average cost for ambient distribution is 2.8 times of the insulation way.

关键词： shelf-life horticultural produce distribution respiration rate

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Predictive Voltage Controlled SVPWM Algorithm Inverter for Stand-alone Wind Energy System

Predictive Voltage Controlled SVPWM Algorithm Inverter for S...

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第二届国际测量仪器与测试自动化学术会议

作者： Cao Hui~1.Cao Dong~2 Xu Yingying~1.1.Department of electrical and Electronics{1.,East China JiaoTong university,Nanchang,Jiangxi,China,33001. 2.information Technology college,Guangzhou university of Chinese Medicine,Guangzhou,Guangdong,China 5.0006

＜正＞For stand-alone wind energy system,the RMS value of output voltage must stability without being interfered with by the load condition,the total harmonic distortion（THD）of output voltage must be *** paper presents a predictive voltage controlled Space vector pulse width modulation （SVPWM）algorithm inverter for the *** algorithm are investigated by computer simulations and validated by DSP281. *** results show that this algorithm is feasible.

关键词： Predictive Voltage Controlled SVPWM Stand-alone Wind Energy System

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The Application of 1.Wire Technique in the Control System of Water-Saving Irrigation

The Application of 1-Wire Technique in the Control System of...

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国际农业工程大会

作者： Dongping Qian, Professor Xiaona Qi, Master Candidate college of Mechanical and{1. engineering, agricultural university of Hebei, Baoding 071.01. China Shifeng Yang, Professor college of information and Automation engineering, Tianjin university of Science and Technology, Tianjin 30022, China

In a traditional control system of Water-saving irrigation, each sensor requires its own wiring and power supply. The sensor output must be signal conditional before transmission. And adding sensors to an existing system means more wires and electronics. Our system of Water-saving irrigation based on 1.Wire technique can resolve the above problems .1.Wire

关键词：

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A Study on Method of Normalizing the Data of Material Corrosion

A Study on Method of Normalizing the Data of Material Corros...

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第二届亚洲材料数据库会议

作者： Desheng Han~(1.2 3) Xinru Jia~1.1.college of Chemistry and Molecular{1. Peking university beijing 1.0871.China 2 Guangdong Huarun Paint Chemical Co. Ltd. Foshan Guangdong 5.8306 China 3 School of Physics and Mechanical & electrical{1. Xiamen university Xiamen Fujian 361.05.China

＜正＞Man-made neural networks have been more used on analyze corrosion data in recent years. Original corrosion data come from accelerated corrosion test,outfield exposed corrosion test,or practical applied occasion,and they are some data groups with many dimensions and include information involving material,corrosion rate,corrosion medium,environment factors,load condition,and so *** corrosion data must be normalized before analyzing by man-made neural *** the same data,if the method to normalize data is different,the analyzing result might be very different and this might affect objectivity of analyzing *** it is necessary to standardize the method of normalizing corrosion data. In this paper,the method to normalize corrosion data is discussed,and an applied example is brought forth, which can be used for reference.

关键词： Neural Network Material Corrosion Data Normalization

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An Energy Minimization Algorithm based on Synergy Choice for Resourceconstrained Wireless Senor Network

An Energy Minimization Algorithm based on Synergy Choice for...

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

作者： Long Cheng-zhi 1,2,Chen Hui3,Li Li-hong 4,Wu Wei-ling 2,Xiang Man-tian5.1 School of information {1.,Nanchang university,Nanchang,330031 China 2 School of information {1.,{5. university of Posts and Telecommunications,{5.,100876 China 3 School of Foreign Studies,Nanchang university,Nanchang,330031 China 4 Software college,Nanchang university,Nanchang,330031 China 5.School of Electronicsand information,Northwestern Polytechnicaluniversity,Xian,710072 China

Cooperative diversity can be applied to energyconstrained resource-constrained wireless sensor network s to significantly reduce node energy ***,cooperation synergy must be carefully selected and coordinated to practically exploit this energy saving *** this paper we investigate synergy choice for energy minimization algorithm in a resource-constrained wireless sensor *** formulate novel and computationally efficient synergy choice heuristics for sensor nodes based on either global or local knowledge of average path loss values in the *** present extensive simulation results of cooperation in a resource-constrained wireless sensor network to show that the proposed heuristics achieve near-optimally energy efficient synergy ***,our simple synergy choice heuristics form the basis of an effective distributed cooperation protocol for improving the energy efficiency of a resource-constrained wireless sensor *** importantly from the point of view of practical implementation,we show that our synergy choice heuristic based on local information is the most effective cooperation strategy for resource-constrained resource-constrained wireless sensor networks,as it yields superior energy conservation results while enabling fully distributed and scalable cooperation.

关键词： cooperative diversity synergy choice energy efficiency resource-constrained wireless sensor networks

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