bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Classification Algorithm of News Pages Based on Domain Ontology
Authors: Xie Cai Yun , Hu Xiao Rong
Published: July 2013

This paper proposes the classification algorithm of news pages based on domain Ontology. In order to improve the shortage of current classification algorithm that only considers the content similarity, this paper presents the semantic classification method which considers both content similarity and structural correlation. Firstly, it parses the Ontology to get Ontology category vector, extracts keywords of news pages texts and drops semantic dimension. At this time, finding out the same vocabulary and ontology category vector in page texts to constitute the text expectation vector, and then calculating the content similarity between ontology category vector and expectation vector of text by using the law of cosines. Secondly, the common vocabularies are mapped to the ontology hierarchy chart, and the structural relevancy is obtained by calculating weighted path of this directed acyclic graph. Finally, it calculates the correlation degree of the news pages and Ontology by combining both, and determines the category of news pages by judging the size relationship between the result and the initial threshold value.
Embedding Two Edge-Disjoint Hamiltonian Cycles into Parity Cubes
Authors: Wang Yan , Fan Jian Xi , Liu Wen Jun , Wang Xi
Published: July 2013

Edge-disjoint Hamiltonian cycles are helpful to implement efficient and fault tolerant algorithms that require a ring structure. The n-dimensional parity cube, PQn, is a variant of hypercube. The existence of two edge-disjoint Hamiltonian cycles in parity cube is unknown. In this paper, we prove that there exist two edge-disjoint Hamiltonian cycles in n-dimensional parity cube with n≥4.
Calculation of Cosmic Radiation Exposure on Flights with Computer Program
Authors: Feng Ying Jin , Chen Wei Ru , Li Qian , Zhang Shi Feng
Published: July 2013

The computer program CARD for used to calculate cosmic radiation doses of aviation route is developed by CAUC. In this paper the function, structure and run principle of CARD is presented. for management of radiation protection, according to the flight data of routes the cosmic radiation effective doses of every year received by the flight personnel during 2001 to 2011 were calculated with software CARD. The results obtained that calculated with CARD were compared with the data calculated using the CARI-6 and measured, respectively. The CARD results and CARI6, and measured agree within 10%.
Study on Flexible Dynamic Visualization Techniques
Authors: Hong Qi , Mao Yan Wen , Zou Liang
Published: July 2013

With the requirement of intelligent performances, flexible dynamic visualization techniques are proposed and their definition and connotation are illustrated. The techniques combine the traditional visualization technique with the flexible dynamic idea and made of two layers of theoretical models of flexible dynamic visualization, thus closing a technical gap in the field. The efficiency of these techniques is proved by their application in the development of a teaching demonstration system in computer science and technology. It is concluded that these techniques not only improve the discipline construction and classroom instruction of computer science and technology, but also serve as a model for their application in other disciplines and fields.
Keyboard Characters Recognition with Support Vector Machine
Authors: Gao Xin Wen , Guan Xing Jian , Guan Ben Bo
Published: July 2013

This paper proposed a method to detect the defects of keyboard characters. The work, which is a part of the keyboard inspection system, integrates two key technologies to realize the recognition function. First, Feature extraction is applied to select the best properties of the keyboard characters to distinguish the difference and six features are chosen. Second, we integrate support vector machine (SVM) into the classification method and the radial basis kernel function is used to map the training data into higher dimensional space to facilitate the classification. We get a satisfied result in the classification finally which demonstrate the proposed approach is effective.
Study on Safety System of Accounting in E-Commerce
Authors: He Fan , Liu Chao , Song De Mao , He Yue Qun
Published: July 2013

Perfect computerized accounting internal controls can effectively guarantee the reliability of accounting information. Development of accounting information system is the inevitable result of social economy environment change. Particularly, e-commerce is the embodiment of the features it will surely produce comprehensive and profound impacts on traditional accounting in todays society. This paper studies the characteristics of the accounting information system to strengthen construction of accounting information system. Also, the paper analyzes the problems of accounting information system under e-commerce environmentand offers corresponding countermeasures.
Analysis of Manufacturing Execution Systems Reliability Growth Based on Bayesian Information Fusion
Authors: Huang Zhi Hui
Published: July 2013

On the background of Manufacturing Execution Systems engineering, based on Bayesian information fusion evaluation methods research system reliability growth. Exploreing MES function of test data is not easy to obtain, it used bayesian fusion method which is based on the type of conjugate prior distribution, assessment the MES reliability of each function module. Utilize Fuzzy priori information, research the MES function module failure rate of the Bayes estimate, to reveals the complex system under the condition of the cause of the problem is not easy to determine, which can be carried out system reliability growth test.
H.264-Based Wireless Video Surveillance System Embedded
Authors: Qin Guo Wei , Tu Shan Chao , Liu Zhi Qiang , Wang Guo De
Published: July 2013

Designed based on H.264 video compression standard for embedded wireless video teaching system，Given in detail of the system hardware design and software implementation of the corresponding method，And data transmission network for the RTP problem corresponding solutions，Practice has proved that the system design is reasonable，reliable operation .
A New Method for Target Motion Analysis
Authors: Ma Chao , Qiao Chun Jie , Wang Yue Ke , Zhao Shen
Published: July 2013

The paper proposes a new method for a targets trajectory, assumed to be linear and uniform, based on the observation of its speed and bearings. After introducing the new method based on assumed model, the paper analyzes the relative error of range estimation caused by speed and bearings estimations relative error; The results of target motion analysis (TMA) is optimized by linearizing the model and using kalman filter. Pond test shows that relative error of range estimation calculated by this method is less than 10-1.
Mis-Configuration Investigation for the Cloud Computing Based on the Fuzzy Pattern Recognition
Authors: Wu Bin , Ma Ji Tao , Wu Ping
Published: July 2013

The mis-configuration investigation is an important field in the security of cloud computing. However, the common method of investigating mis-configuration is a post-processing way. In order to find errors in the process of the cloud service management timely, we analyze the relationship between indicators of the cloud computing and locations of configuration items in this paper. According to this relationship, we construct a solution model based on the fuzzy pattern recognition. The lattice degree of nearness is used to determined locations of the mis-configuration. We further test the validity and accuracy of the model under the cloud simulation environment. The results show that the model is more effective and accurate to find the location of the mis-configuration rapidly.
Research of Intrusion Detection Based on Ensemble Learning Model
Authors: Li Yang , Li Jian Lin , Yue Song Jie , Wang Zhi
Published: July 2013

In order to improve the detection accuracy of the intrusion detection, the proposed ensemble learning model is applied to the intrusion detection. This method can significantly improve the generalization capability and flexibly. Compared to the single classification method, despite choosing the ensemble classifiers for data detection can cause an increase of the additional overhead, ultimately the detection accuracy can be improved obviously. The experimental results with the KDD dataset further verify the significant efficiency of ensemble learning model.
The Study of the Managing Node Redundancy of Real-Time Industrial Ethernet POWERLINK
Authors: Wang Jian Jun , Liu Zhi Feng , Ma Ji Kai
Published: July 2013

This paper analyses the master station redundancy technology in the POWERLINK network. Through the monitoring network and data refresh to achieve the master station redundancy function. The Managing Node redundancy ensures the POWERLINK cycle production continuance after the failure of the current master station, the switch-over time (recovery time) of the POWERLINK system is in the two POWERLINK cycle time at least. That ensures a very fast restoring of normal operation without any downtime for the control system.
Research on Security Problems in Wireless Sensor Networks
Authors: Liu Wen Tao
Published: July 2013

The wireless sensor networks are widely used in many fields because of its characters such as large-scale, self-organization, dynamic, reliability and so on. But its developments have encountered many problems and the security is an important problem. The traditional security protection method cannot be applied directly to the wireless sensor networks such as the intrusion detection system due to its special characteristics with limited memory and storage space. In this paper, the security problems and related protection mechanisms in the wireless sensor networks are discussed and the intrusion detections are introduced. The essential reasons of security issues in wireless sensor networks are analyzed and some intrusion attacks methods are illustrated. The security pattern in the wireless sensor networks is provided and analyzed.
Performance Evaluation of ZigBee Routing Algorithms in Smart Grid
Authors: Zhao Qing Qi , Zhao Hong Hao , Meng Fan Bo , Lei Zhen Jiang
Published: July 2013

In order to meet the requirements of Smart Grid in data acquisition, transmission reliability, stability, robustness and low power consumption of devices, ZigBee with its significant advantages of low power, low cost, low rate and easy to use, can play an important role in Smart Grid. As one of the key technologies of ZigBee, routing technology plays an important role in the performance optimization of network. Thus, in this paper, we focus on cluster-tree routing algorithm and hybrid routing algorithm in ZigBee network. Simulation and results show that, hybrid routing algorithm has better performance than cluster-tree routing algorithm in network throughput, average traffic received, average number of hops, network delay and network load.
Application of IEEE802.1x Protocol Based on EPON System
Authors: Zhi Huang , Wang Xiang Qun , Chen Wei
Published: July 2013

IEEE 802.1x is a port-based network access control protocol, the one of the newest authentication protocols. With the MD5 algorithm as an example, this paper introduces the type of protocol packets and the authentication process in detail. The authentication port is apart from the business stream based on the logical port. The business stream is transmitted over the controlled port, but the authentication stream is transmitted over the uncontrolled port. Therefore, the port control and authorization for users can be carried out. In this paper, two authentication methods based on EPON system are studied in detail. The 802.1x authentication protocol has many advantages, such as low-cost, simply and so on. It can satisfy the requirement of intelligent distribution network communication system.
Methods of Safety Risk of Marine Network System of the Evaluation Based on Fuzzy Set and Entropy Weight Theory
Authors: Zou Guo Liang , Han Jin Ju
Published: July 2013

In view of the special nature of the marine network security, this paper is mainly based on the fuzzy set theory and entropy weight to some aspects of the network security risk assessment, and gives the description of scale, constructs the membership degree matrix of the corresponding evaluation factors, entropy weight coefficient method is used to determine the factor weights to reduce the traditional weight method for subjective deviation, Using system synthesis method, the safety risk value of each element of integration and then decides the grade of Marine network system security risk. The example analysis shows that the method is feasible and effective.
A Protocol to Enhance ZigBee Performance Base on Digging WiFi Traffic
Authors: Zhang Song , Chi Tao
Published: July 2013

The performance of ZigBee under interferences especially heavy WiFi hotpots has been more and more noticed in wireless sensor networks. Empirical results show that WiFi traffic contains abundant white space. It provides potential opportunities for ZigBee and WiFi to coexist in the same or overlapping channels. In this paper, we used the Pareto model to characterize the white space between WiFi frame clusters. Base on this model and a new ZigBee frame control protocol we developed, we gave out the best threshold of the model to achieve desired trade-offs between ZigBee link throughput and delivery ratio. According to experiments on the ZigBee Development Kits, the most suitable threshold of the Pareto model is 1.5ms. It could make a 10.9% throughput and 39.5% delivery ratio improvement.
Energy-Efficient Rings: A Green Mechanism for Multi-Segment Fiber-Wireless Access Networks
Authors: Zhu Li Jiao , Gong Xiao Xue , Hou Wei Gong , Liu Ye Jun , Guo Lei
Published: July 2013

In this paper, we propose a novel green mechanism called Energy-Efficient Ring (EER) for multi-segment Fiber-Wireless (FiWi) access networks. We first utilize clustering scheme to generate clusters each with the shortest distance of fully connected segments in it. Leveraging backtracking method, we then connect segments in each cluster through fiber links and the shortest fiber ring is constructed in each cluster. Finally, we sleep low load segments and forward affected traffic to other active segments on the same fiber ring. Experimental results show that EER significantly reduces the energy consumptions at the slightly additional cost of deploying fiber links.
Analysis the Advantages and Packet Format of EIGRP
Authors: Yang Quan Fen , Shi Heng Hua , Zhu Shan
Published: July 2013

EIGRP is an enhanced version of IGRP, and is a private routing protocol of Cisco Systems, Inc. We analyze the packet format of EIGRP and the advantages including PDM, RTP, DUAL, rapid convergence times, low usage of network resources, and route summarization. In Packet Tracer simulation software, the simulation experiments configure EIGRP in a simple network topology. The simulation results show the different structure of EIGRP packet, and EIGRP supports well route summarization and provides extremely quick convergence times with minimal network traffic for low usage of network resources.
A Survey on Clustering and Routing on LEACH for Wireless Sensor Network
Authors: Gao Lu , Li Zhong Min , Wu Jing Jing
Published: July 2013

In recent years, Wireless Sensor Networks (WSNs) have been promising approaches for a variety of application monitoring and capturing the required data from the environment. Due to the restricted communication range and high density of sensor nodes, routing in WSNs has been considered an important field of research over the past decade. The most popular protocol for clustering in WSNs is Low Energy Adaptive Clustering Hierarchy (LEACH) which is based on adaptive clustering technique. The factors affecting LEACH efficiency include Cluster Head (CH), topology structure and routing algorithm. This paper provides in the past years the taxonomy of various clustering and routing techniques based on LEACH in WSNs. The paper highlights the primary principle of each improved protocol and emphasize on their advantages and disadvantages compared to the LEACH.
Manufacturer Decision Analysis on RFID Adoption
Authors: Zhang Gui Tao , Hu Jin Song , Zhao Chun Long , Wang Kui Kui , Wen Guo Rui
Published: July 2013

RFID technology has many advantages and plays an important part in eliminating the inaccuracy of inventory information. This paper analyzed how manufacturers decided the raw material ordering quantity to maximize their profit when the price of raw materials was given through newsvendor model. Combined with the impact of putting raw materials wrongly and lost of raw materials, we compare the profits of not adopting RFID technology and that of adopting it. Then we obtain the biggest cost that manufacturer could undertake when adopting RFID, and the results can provide the foundation for the decision maker of manufacturing enterprise.
Data Transmission Hardware Design of IPv6 Node for Internet of Things
Authors: Chen Rong Jun , Xie Kai , Xie Shun Dao , Zhu Xiong Yong , Tan Hong Zhou
Published: July 2013

To reduce the resource consumption in traditional software IPv6 Internet protocols based on embedded system, a data transmission hardware scenario of reduced IPv6 protocol with optimized cache structures based on the FPGA is designed using Verilog HDL. This scenario implements the function of the Transport Layer and the Network Layer on FPGA and uses the function of the Data Link Layer and the Physical Layer on the DM9000A chip, which can perform stateless auto-configuration, address resolution, echo response and UDP transmission. To improve the transmission efficiency, a low-resource-consumption and self-managed cache structure is designed to manage the Neighbor Cache, the Prefix Table and the Default Router Table. In the IPv6 network test, the design can configure itself and its data rate exceeds 28Mbps, which can realize real-time video stream, audio stream and other data transmission in Network of Things applications in IPv6 network.
Internet of Things and RFID Technology
Authors: Liu Li Min
Published: July 2013

The internet of things is a foundation for connecting things, sensors, actuators, and other smart technologies, thus enabling person-to-object and object-to-object communications. Its applications are concerned to emergency response, intelligent shopping, smart product management, smart meters, home automation, waste management, sustainable urban environment, continuous care and so on. As automatic identification sensor, RFID is a foundational component for the internet of things. In this paper, internet of things, RFID and technical analysis for IoT and RFID are discussed.
A RFID Controller with Contactless Cards for Internet of Things
Authors: Liu Li Min
Published: July 2013

RFID system is a foundational component for the internet of things. Its applications are more and more popular, such as travel, retail, industry, defense, agriculture, storage and other fields. Controller or reader is an essential part for RFID applications. It can identify tags, process data and issue management instructions. Microcontrollers are common hardware for embedded applications. With microcontrollers, the RFID controller will be smart and easy to be used. In this paper, RFID, internet of things, contactless cards, readers, microcontrollers and design of a RFID controller with microcontrollers are discussed.
The Research of Vehicle Routing Problem With Time Window for Changsha Yunda Express in Kaifu District
Authors: Liu Zhong
Published: July 2013

For express companies' distribution center, optimizing the vehicle routing can improve service levels and reduce logistics costs. This paper combines the present vehicle routing situation of Chang Sha Yunda Express in KaiFu area with the specific circumstances to analyze. A model of the vehicle routing problem with time window for the shortest distance was built and then use genetic algorithm to solve the problem. Its application showed that the method can effectively solve the current vehicle routing problems.
Research on Modeling of the RoHS Compliance System on UML
Authors: Wang Xiao Ning , Zhou Chuan Hong , Benoit Eynard , Xuan Zhao
Published: July 2013

With the application of the ROHS standard in the products management, the Product Overall Lifecycle Management has been increasingly complex. Based on the UML2.0 modeling technology, this paper discussed the ROHS conformity system modeling process by the modeling tool VP-UML. According to the information model, the core data about Product Life Cycle can be converted to the XMI document, and be used to get the optimization of the model.
A Method of Information Fusion on the Unmanned Weapon System
Authors: Wang Gang , Guo Zhong Wei , Wen Wan Quan , An Fei Fei
Published: July 2013

Aiming at improving the identification and judgment on objectives of unmanned weapon system in the battlefield, this paper puts forward a new efficient method to infuse conflict evidence orienting towards shortcomings existing in the Dempster-Shafter (D-S) evidence theory when fusing conflict evidence. This paper is to improve the D-S Evidence Theory, by firstly conducting research on the influence of a certain operational environment on the sensors precision in the unmanned weapon system, and by secondly establishing sensors weight values based on fixed basic probability assignment by exploiting AHP. The improved approach can enhance the reliability of identification result, which has been proved via simulation experiments, and it improves the performance of target recognition system to a certain extent.
Design and Implementation of Energy System Based on Smart Grid
Authors: Wei Song , Ye Jian Bin , Rui Dai
Published: July 2013

Tianjin eco-city is made an example to introduce the design and implement of energy system based on smart grid. This system implemented the acquisition and testing of energy information of the residents of the smart community, buildings and large customer. This system provided user energy using strategy, energy using assistant decision-making and other technologies through analyzing users data, diagnostic analysis of the level of user energy efficiency, and ultimately implemented the using and extension of energy saving technology in the end-user.
Hierarchical Power Management Model and Analysis in Data Center
Authors: Li Jian Xiang , Kong Xiang Zhen , Lv Yi Nan
Published: July 2013

Power provision is coming to be the most important constraint to data center development, how to efficiently manage power consumption according to the loads of the data center is urgent. In this paper, we provide the Request-Response Hierarchical Power Management (RRHPM) model for data center, and based on queuing theory, analyse the performance and constraints of two strategies hierarchical structure implement of RRHPM. Numerical results show that the Equal Utilization Strategy has less average response time, can manage more service nodes with the same response time threshold, and require less power management nodes than popular Equal Degree Strategy.
Research on the Model of Database Intrusion Protection System Based on E-Commerce Platform
Authors: Guo Hui Ling
Published: July 2013

Based on attack model of database,a model of database intrusion prevention system is proposed in electronic commerce platform. The model is divided into session level intrusion detection model, schema level intrusion detection model and semantic level intrusion detection model according to the abstraction level of test information. It extends the COAST firewall model with intrusion detection, and a layered intrusion prevention model which detect intrusion behavior according to session level, schema level and semantic level information of transactions. Thereby, it updates database security from passive protection to proactive protection.
Application of Web Based Knowledge Management System in University Libraries
Authors: Jing Du , Gao Xiang Rong , Yuan Yong Cui
Published: July 2013

Web based knowledge management systems have opened new arrays in the present web based world. This paper proposed a web based knowledge management system (WBKMS) for university libraries that will support the creation, organization, storage, dissemination and utilization of the institutions digital knowledge assets. Existing web based knowledge management systems were surveyed and a model framework was developed keeping in view the prevailing loopholes in the present systems. This research will improve staff professionalism and will help in achieving coordination with other libraries and library users.
Study on Household Registration Management System
Authors: Li Ying , Yan Hong , Wang Mei Hua , Zhang Shi Min
Published: July 2013

The development of University of household registration management system involves the establishment and maintenance of the background database and the foreground dynamic WEB development.The household registration management system designed with ASP.NET, database using SQL SERVER.The system is developed with DREAMWEAVER and speed up the use of IIS server to the system's overall speed, the overall system using the framework of B/S structure,the household registration management system functions to the basic design of the modern household registration management of the practical application needs.
Design and Realize of a Universal High Precision Tester of Attack and Slide Angle Sensor
Authors: Zha Guang Dong , Yang Cheng , Diao Li Feng
Published: July 2013

In order to solve the problems that measuring efficiency is low and measuring precision is low dependent on the maintenance man to test by manual work, a universal high precision tester of attack and slide angle sensor is proposed. The measuring efficiency has improved through the electronic spirit level that measures the attack and slide angle fast and automatically and reads data automatically. The universal property and expansibility is realized by the design method that the software and test data are designed separately. The tester in this paper is fit for the fast maintenance requirement of the attack and slide in the army, and this method has certain reference to construct other electronics tester.
Seamless INS/GPS Integration Based on Support Vector Machines
Authors: Xu Tian Lai
Published: July 2013

The combination of Inertial Navigation System (INS) and Global Positioning System (GPS) provides superior performance in comparison with either a stand-alone INS or GPS. However, the positioning accuracy of INS/GPS deteriorates with time in the absence of GPS signals. A least squares support vector machines (LS-SVM) regression algorithm is applied to INS/GPS integrated navigation system to bridge the GPS outages to achieve seamless navigation. In this method, LS-SVM is trained to model the errors of INS when GPS is available. Once the LS-SVM is properly trained in the training phase, its prediction can be used to correct the INS errors during GPS outages. Simulations in INS/GPS integrated navigation showed improvements in positioning accuracy when GPS outages occur.
Design and Simulation of a Novel Horizontal Sensitive Inertial Micro-Switch with Low G Value
Authors: Wang Yong Liang , Chen Wen Guo , Wang Zhao Yu , Ding Gui Fu , Zhao Xiao Lin
Published: July 2013

A novel horizontal sensitive inertial micro-switch with low g value was proposed and simulated in ANSYS, and was fabricated on quartz substrate based on non-silicon surface micromaching technology. Due to this special design, the micro-switch has a very good horizontal unidirectional sensitivity. The contact effect is improved by a modification of the traditional design. The flexible contact between the proof mass electrode and fixed electrode prolongs the contact time and reduces the rebound effect. The contact time is about 100μs under a half-sine wave shock with a12g peak value.
A New Type of Electroacoustic Transducer Used for Downhole Acoustic Telemetry System
Authors: Liu Xuan Chao , He Yan Xia , Li Guo Hong
Published: July 2013

The high power and low frequency electroacoustic transducer plays a very important role in the underground acoustic telemetry system used for petroleum industry. How to realize electroacoustic conversion technology with the giant magnetostrictive materials was studied in this paper. The principles and methods of how to design it were proposed and the experimental verification was achieved. Results show that the electroacoustic transducer based on giant magnetostrictive materials features high-power and low-frequency output, high conversion efficiency, high temperature resistance, and excellent performance. It can completely meet the needs of the downhole acoustic telemetry system.
The Design Proposal Aerospace Electronic Test Equipment Based on Multi-Interface Data Communication
Authors: Zhang Yan Jun , Qiao Wen Sheng , Wang Jin Ling
Published: July 2013

In the background of requirement which apply in aerospace remote measurement electronic equipment, a new requirement for the universal degree to the remote measurement system is proposed. This paper design communicating solutions of the multi-interface device, hardware circuit,FPGA as the core logic controller, coordinating RS-422 interface chip, Ethernet controller W5300,USB-FIFO,FT245 interface chip and other functional modules. The communication equipment has a variety of interfaces; achieve the reliability of transmission of high data rate. This has been applied for engineering practice and improves the efficiency of the design of the remote measurement equipment and maintenance.
Study on Tensile Strains in Concrete Bridge Girders
Authors: Yang Yi Xi
Published: July 2013

In this paper, we present the design and testing of a simple yet accurate transducer for measuring strain in reinforced concrete bridges. Lessons learned from two earlier versions of the transducer, the first of which was incorporated into the design constraints and criteria. The following sections present the transducer design process, review the calibration and lab testing of the transducer prototype, and summarize the transducer performance in the field.
Software Test of Wireless Vibration Nodes of Nuclear Power Plants
Authors: Deng Chang Jian , Hu Hong Yang , Ling Jian Zhong
Published: July 2013

To do Validation and Verification" of wireless vibration sensor nodes in NPPs (nuclear power plants), embedded system software test should be done. The test index is analyzed firstly; then the method of 'Temb' was introduced to analysis ADXL202 vibration nodes; the characteristic of system was used to establish LITO(life cycle, Infrastructure, Techniques, Organization) matrix, they are of emphasizing safety, application in harsh environment, using algorithms of technology and science and so on. The acceleration circulation method using fixed time cycle pretest by instrument and other weak was proved to be infeasible though FMEA (failure modes and effects analysis). Then FTA (fault tree analysis) is used to analyze system, so the software filter and real-time cycle test method were used to improve test precise and reliability of node vibration measurement. Experiments have proved its effective.
A Graphical Approach for Human Skin Moisture Evaluation by Electrical Impedance Spectroscopy
Authors: He Yu Xing , Dong Yong Gui
Published: July 2013

A pair of concentrically placed gold electrodes is utilized in contact with human skin surface for moisture evaluation. The electrical impedance spectroscopy is measured within a frequency range of 100Hz to 5MHz. It is showed that, in case of relatively dried stratum corneum, reproducibility of measured impedances will decrease significantly in lower frequency range. The integrality of impedance frequency locus is correspondingly dependent on skin moist state. On the other hand, in case of relatively wetted stratum corneum, an integral locus can be obtained and Cole-Cole arc model can be applied for quantitative calculation. The integrality of the locus is introduced as a supplemental parameter. Experimental results with moistened filter paper as well as human skin indicate that, the skin moisture can be better represented both graphically and quantitatively.
Visual Odometry and 3D Mapping in Indoor Environments
Authors: Wu Qin Fan , Li Qing , Cheng Nong
Published: July 2013

This paper presents a robust state estimation and 3D environment modeling approach that enables Micro Aerial Vehicle (MAV) operating in challenging GPS-denied indoor environments. A fast, accurate and robust approach to visual odometry is developed based on Microsoft Kinect. Discriminative features are extracted from RGB images and matched across consecutive frames. A robust least-square estimator is applied to get relative motion estimation. All computation is performed in real-time, which provides high frequency of 6 degree-of-freedom state estimation. A detailed 3D map of an indoor environment is also constructed.
The Influence of Maximum System Field Angle on Hyperboloidal Catadioptyic Panoramic Imaging System
Authors: Ma Zi Ling , Shen Yan He
Published: July 2013

A model of hyperboloidal catadioptric panoramic imaging system is built, and equations between the maximum system field angle and other parameters of the system model are derived. The influence of the maximum system field angle on reflector surface shape, effective pixels width, system resolution and observation distance are analyzed by using quantitative analysis method. Meeting the requirements of system design, the simulation results indicate that the maximum system field angle should be less and stay as far as possible away from 105 °. The experiment results indicate that the actual maximum system field angle and the physical maximum system field angle should overlap in order to avoid system resource waste and performance degradation.
Lattice Ordered Evaluation Method of Equipment Response Event to Voltage Sag
Authors: Wang Ying , Yang Da , Liu Yang , Chen Ce
Published: July 2013

Considering the multi-valued mapping relationship of equipment response event to voltage sag, a lattice ordered evaluation method is proposed in this study. Each possible resulting state of equipment response event is described by an interval number. The interval numbers is with the characteristics of lattice order presented by the upper and lower probabilities. The possibility degree matrix is introduced to compare resulting states without satisfying the axioms of connectedness. Personal computer is simulated and compared testing results. The results have shown the validity and feasibility.
Viscosity and Density Estimation of Ternary Solution Based on Recursive B-Spline Method
Authors: Fan Xian Guang , Wang Xin , Xu Ying Jie , Hu Zhen Bang , Wang Zhen
Published: July 2013

Online viscosity and density estimation of ternary solution with sucrose and sodium chloride means a lot in osmotic dehydration of food. The authors proposed a novel B-spline method using recursive least squares to estimate viscosity and density using concentrations of the two solutes and temperature. A 4-D B-spline is established to estimate viscosity with the inputs of sucrose concentration, sodium chloride concentration and temperature. And a 3-D B-spline is also established to estimate density in a fixed temperature. The maximum relative errors of viscosity and density estimation are 0.0062% and 1.33×10-5% respectively which show that the method is of high accuracy and suitable for practical application.
Fuzzy PID Temperature Control System of Reaction Kettle Based on PLC
Authors: Chen Qi , Liao Lin Zhi , Chen Hong Rong , Wu Ni Yan
Published: July 2013

Adopt a fuzzy PID control algorithm in order to solve the control difficulty which caused by the uncertainty lag of temperature control in chemical reaction kettle. The algorithm is realized by utilizing PLC system function. The system takes full advantage of the features of PLC control system, such as flexibility, reliability, and strong capacity of resisting disturbance. Field application result shows that the system eliminates the impact of time-varying delay on control function well. It has good robustness.
Research on Distillation Fuzzy Decoupling Control System
Authors: Lu Sheng Li , Tian Yan Yan , Liu Mei Ling
Published: July 2013

The distillation process analysis showed that there was significant coupling relationship between temperature control loops of distillation tower top and bottom. Therfore, a new dual-input dual-output fuzzy decoupling control method is put forward and simulation research on decoupling control qualities is made by using Simulink. This paper introduces the structure and implementation method in every link of this decoupling control system as well as simulation process. The results show that fuzzy decoupling control can improve the temperature control qualities of distillation tower top and bottom efficiently.
The Analysis of Flooded Submarine Motion State Varying from Different Attack Angle under Blowing Ballast Tank
Authors: Liu Hui , Pu Jin Yun , Li Qi Xiu , Wu Xiang Jun
Published: July 2013

The paper establishes emergency recovery maneuver model of six degree of freedom and blowing ballast compartment model of high pressure air. Based on standard maneuver equation, considering the influence of large angle of attack to hydrodynamics coefficient, correct the standard equation through supplementing hydrodynamics items. Applying large and small angle of attack system to simulate and calculate state parameters, and find the occasion of large of attack, the influence of initialization velocity and depth to change of angle of attack. The results prove that large angle of attack system is significant to forecast the state parameters.
The Evaluation Method Study on Successful Recovery under Flooded Compartment of Submarine
Authors: Wu Xiang Jun , Liu Hui , Li Qi Xiu , Li Zhi Hui
Published: July 2013

After flooded compartment of submarine, whether or not success of emergency recovery lie on the size of crevasse, the depth and the speed of submarine, and the emergency recovery mode. The paper explains the method of making certain submarine safety limited area, and takes a submarine for example to establish maneuver safety boundary by a great deal numerical simulation under different emergency recovery mode. This will provide scientific theory guide to adopt emergency program for submarine manipulator when encounter submarine accident, and offer logical suggestions to set down a veracious recovery plan.
The Passive Evaluation Method of Electromagnetic Environment in ILS Construction of Airport
Authors: Ye Jia Quan , Liang Fei , Liu Jing
Published: July 2013

In the process of new and expand airport, electromagnetic environment of navigation equipments in air traffic management are affected by more and more factors, especially ILS. For voiding to influence fly safety, and ensuring a nice electromagnetic environment, the electromagnetic environment of airport should be assessed by passive evaluation through clearance analysis, Fresnel area analysis and simulation analysis.
Synchronization of Liu Chaotic System with Fractional-Order
Authors: Huang Su Hai
Published: July 2013

This paper deals with chaos synchronization of the Liu chaotic system with fractional-order. Based on the fractional-order stability theory, an adaptive sliding mode controller has been constructed to realize projective synchronization of fractional-order Liu chaotic system with unknown parameter. An illustrative simulation result is given to demonstrate the effectiveness of the proposed sliding mode controller.
The Simulation Research and Modeling of Asynchronous Motor's Vector Control
Authors: Gong Yu Fang , Gong Yu , Li Xin Ying
Published: July 2013

Based on the analysis of the mathematical model of the three-phase asynchronous motor and sine pulse width modulation principle, According to the theory of asynchronous motors vector control , software is building simulation model of asynchronous motors vector control system according to the rotor flux in Matlab/Simulink, analysis dynamic characteristics of rotational speed, torque and stator current ,provided the simulation results of the control system, verify the vector control is effective and feasible.
Control of Hospital Wireless Calling System Based on SCM
Authors: He Juan , Ao Bang Qian
Published: July 2013

The ward calling system of a special radio frequency wireless transceiver chip transmission has been designed . This system avoids the trouble of wiring and reconstruction for traditional wired paging system. Combining the single address coding technology, SCM is used as controller, and the latest call bed number is storage automatically and is displayed circularity. Historical number is deleted by the delete key. This system enhances connection of the nursing station and the ward and improves the level of care. The system has a great practical value in the medical service system reform.
The Spatial Intelligent Structural Active Control Experimental Research
Authors: Ma Qian Ying , Wang She Liang , Zhu Jun Qiang , Xiong Er Gang
Published: July 2013

Active control in the application has more and more research, the independent modal space control method is transform the system equation into modal coordinates, then obtain the internal decoupling equations express by modal coordinates, and based on control algorithm calculate the modal control force, which achieve real-time control effect. The control calculation method is simple and efficient to meet the needs of active control. The paper introduce modal control theory and implement methods, design and manufacture the piezoelectric driving lever based on the working principle of the piezoelectric pile, then through the test, give the voltage-driving force relationship, which is linear. An active control experiment on a three-layer intelligence space structure had been done, it can be seen that through the active control, the corresponding modal displacement and acceleration of the structures control are a lot of inhibition; at the same time, through spectral analysis, it can be seen the structured modal damping coefficient corresponding to varying degrees have been improved.
The Calibration System of Temperature and Focal Plane for Space Camera
Authors: Yu Tao , Song Ke Fei
Published: July 2013

In order to study the relation of temperature and focal plane and confirm the focal plane based on temperature and guarantee the imaging quality for space camera, the calibration system of temperature and focal plane was proposed. Firstly, the condition on temperature balance was analyzed. Secondly, the evaluation method of image was introduced. Thirdly, the system structure and operating principle were introduced. Finally, the system was designed. Experimental results indicate that the position of focal plane is decided by the average temperature of primary mirror when the temperature of space camera is in balance. The calibration error is no more than 0.051μm and satisfies the requirement of system design.
Simulation of an Opposed-Piston Four-Stroke Free-Piston Generator
Authors: Xu Zhao Ping , Chang Si Qin
Published: July 2013

In order to achieve efficient conversion of the chemical energy of fuel into the electrical energy, a novel opposed-piston four-stroke free-piston generator is developed in this paper by equipping one free-piston engine with two linear generators. Mathematical models of the opposed-piston four-stroke free-piston generator are created based on the kinetic equation of the free-piston motion, the state equation of the ideal gas, and an equivalent heat release function of the combustion process. Dynamical properties of the system are simulated and analyzed by using the created model, and results from the simulation are presented. According to the simulation, the new four-stroke free-piston generator can realize running without vibrations.
Sensitivity Analysis of the Variable Structure Control for a Two-Wheeled Unstable Vehicle
Authors: Xu Jia , Qu Sheng Li , Li Yan Zhao
Published: July 2013

The sensitivity function is applied to the VSC of the two-wheeled unstable vehicle in this paper. By pole placement of state feedback function we can conduct the sensitivity function of VSC. Analyzing the isokinetic approach law and quasi-sliding we can prove that compared to pole placement of state feedback control, the VSC not only has superiority in robustness for disturbance and internal perturbation, but also obtains more satisfactory dynamic performance.
Multi-Slide-Mode Control for the Homing Phase of Automatic Rendezvous and Docking
Authors: Zhao Xia , Gan Quan , Lin Tian Hua
Published: July 2013

Multi-Slide-Mode Control (MSMC) is proposed to decrease energy consumption for homing phase of automatic rendezvous and docking (AR&D). The energy consumption is an important target in homing phase. MSMC is developed from sliding mode control (SMC) and its advantage is energy saving. The switching function of MSMC is piecewise, which is named as multi-sliding-mode. The control system is simulated and the results show the control effects are in accord with prospects.
Some Considerations of the Pulse Power Switch Centered on Thyristor Device
Authors: Li Wei Bo , Xin Wang , Feng Quan , Li Wei Chao , Sun Zhao Long
Published: July 2013

For high energy short pulse discharge applications, like electromagnetic launchers or magnetic forming, mostly the thyristor technology is used. The presented thyristor switch assemblies using 125 mm wafer size are made to switch 62.4MJ stored energy into a load in very short time. The maximum transient peak current of 26 kilo-amperes peak for 20 ms with convection water and air cooling. For this presentation we concentrate on the Thyristor technology as this offer the highest current capability but are not in the position to switch-off any current. Some measures must be used to the pulse switch centered on Thyristor device, i.e., proper selection of the static and dynamic parameters of the thyristor, enough power for triggering the device, and efficient cooling of the device, which can make it possible to produce devices with high blocking voltage combined with very high current handling.
Tollerance of Linear Dynamic System Calculated in Matlab Environment
Authors: Halenar Robert
Published: July 2013

By the influence of changes in ambient parameters and operating conditions and changing parameter values LDS is changing their properties (behavior), reflected also in changes in characteristics, it is also possible to formulate an opposite role: "To what extent can be changed system parameters, to reached its behavior (under certain criteria) remained preserved ? " The answer to this question deals with the task of determining allowable changes - tolerance parameters for the desired behavior. Criteria for the behavior may be different. We will build on the frequently used criteria for optimal module. Methodology makes use of computer simulation of classical mathematical analysis.
Simulation Research of CVT Variable Fertilization Control System
Authors: Liang Chun Ying , Xu Qian Hui , Ji Jian Wei , Zhu Ling Ling
Published: July 2013

Using MATLAB to establish emulation model of variable rate fertilization control system, using the Z-N method to setting the system of PID parameters, emulation of the system has without PID controller and PID controller, analysis and evaluation of the system dynamic performance index and steady-state performance index. The emulation results shows that the system with PID controller, the maximum overshoot reduce, adjusting time short, improve the time domain dynamic index; phase margin increase, magnitude increase, improved the performance index of the frequency domain.