bluuebunny/crossref_metadata_2025 huggingface dataset:
GPC Based PID Control for Superheat Control of Refrigeration System
Authors: Zhao Min , Jia Xiao Long , Song Ping
Published: November 2013

Superheat control of refrigeration system features large time-delay. When the operation conditions change, it is difficult for a traditional PID controller with fixed parameters to achieve ideal control effects. Consider the advantage of traditional PID and generalized predictive control (GPC) algorithm, a new PID algorithm based on GPC is proposed in this paper. After obtaining the system model by using the least square identification, the solution of Diophantine equation is used for the PID parameters, which can change adaptive according to the operation conditions. And the simulation results in the last part of the paper prove the efficiency of strategy.
WiFi Wireless Video Transmission Technology's Application in Intelligent Home
Authors: Shi Xin Jun , Ye Xi En , Li Chang Ye
Published: November 2013

This Paper takes WiFi wireless video transmission as the technical basis, realized a remote WiFi video system through embedded Linux system, and successfully applyed it in the intelligent home control.The WiFi module is based on IEEE802.11n wireless protocol, which improves the highest transmission rate to 300 Mbps. Wireless camera capture video data and use H.264 to encode it, which greatly reduces the consume of the wireless bandwidth.The PDA terminal is implemented to comunicate with embedded Linux system via TCP/IP protocol, while the data is encrypted by TLS/SSL protocol.
The Optimal Detection and Analysis for High-Degree Camouflaged Incursion Features Based on Improved BP Neural Network
Authors: Lu Hong Li
Published: November 2013

In order to effectively increase the incursion features detection accuracy with high-degree camouflage in the network, this paper proposes a high-degree camouflaged incursion features detection algorithm based on BP neural network. This paper utilizes distributed components to collect and analyze the incursion data features with high-degree camouflage, and designs an incursion features detection proxy module based on BP neural network. This paper takes the protocol platform developed by some company in Zhengzhou city as an example to detect the incursion of malicious information and presents the detailed diagnose methods and procedures in which the accuracy can reach up to 93.7%.
The Research Based on Security Model and Cloud Computing Strategy
Authors: Pei Ao Qiu , Yang Min , Tang Yan Bin
Published: November 2013

Cloud computing based on a large number of distributed computer gathers a wide variety of computing resources data and builds huge virtual resources space and provides information technology resources for the majority of computer users through the Internet. Security issues is one of the core elements which constrains the depth development of cloud computing. It also is the hot issue of research in this field. This paper first analyzes the architecture and threat signatures of cloud computing system and data application model based on the data of cloud computing and data security threat characteristics. It builds a data security implementation model under cloud computing. Based on this, it builds information security model of cloud computing strategy and analyzes configuration program of the model in the cloud computing.
Design and Implementation of Intelligent Spam Filtering System
Authors: Gong Song Jie , Zhang Xue Mei
Published: November 2013

With the rapid development of Internet, E-mail has been widely applied, and along goes a great deal of useless and harmful information. In the face of todays rampant spam developments, anti-spam mechanism is the mail filtering technology has gradually become the focus of information security. While the technical performance of spam filtering is good or bad, the key lies in the amount of spam sample collection, study and analysis. Through the analyzing and processing of spam, the paper designs and implements the intelligent spam filtering system. It brings forward some new theories. Based on analyzing actuality, origin and characteristic of spam, the paper also mainly expounds several filtering technique applied in E-mail.
Research on Electronic Cash Security Technology in Electronic Commerce
Authors: Gong Song Jie , Jin Lin Di
Published: November 2013

With the rapid development of electronic commerce, payment is becoming the focus problem of electronic commerce. Electronic cash has become the ideal method of electronic payment for it is able to realize fair, secure, effect electronic transacts. Along with electronic commerce development, electronic cash payment systems are also gradually developing. However, most electronic cashes are facing the security issues. Moreover, the amount of money each electronic cash card contains is fixed at issuance and is available only within a specified system. The key technology is digital signature technology, including blind signature, group signature, and ring signature. The paper researches the security problems of electronic cash in information safety and e-commerce, and discusses the electronic payment and the security problem, which is regarded as the foundation of electronic commerce. The main factors are given that causes security problems of electronic payment, and suggests corresponding precautionary measures.
A Network Security Situational Awareness Model Based on Information Fusion
Authors: Abasi
Published: November 2013

Security situational awareness has become a hot topic in the area of network securityresearch in recent years. The existing security situational awareness methods are analyzed and compared in details, and thus a newnetwork security situational awareness model based on information fusion is proposed. This modelfuses multi-source information from a mass of logs by introducing the modified D-S evidence theory,gets the values of nodes security situational awareness by situational factors fusion using attacks threat,and vulnerability information which network nodes have and successful attacks depend on, computesthe value of network security situational awareness by nodes situation fusion using service informationof the network nodes, and draws the security-situation-graph of network. Then, it analyzes the timeseries of the computing results by ARMA model to forecast the future threat in network security.Finally an example of actual network datasets is given to validate the network security situationalawareness model and algorithm. The results show that this model and algorithm is more effective andaccurate than the existing security situational awareness methods.
Formal Specification of Information Transmission Architecture Based on Automatic Generation of Primitives in Digital Campus
Authors: Li Xiao Le , Wen Ying , Weng Ming
Published: November 2013

Based on comprehensive analysis on security requirements of information transmission, security primitive is generated by automatic tool in asymmetric key cryptosystem, and improved with addition of compositional factors. And then, formal processes of secure information transmission are constructed with composition method. Formal analysis shows that, secrecy, integrity, availability, controllability, non-repudiation and identifiability during information transmission can be insured by this architecture, as a common framework for development of various application systems in digital campus from the viewpoint of information security.
Research on Information Hiding Based on XML Tag Attributes
Authors: Wang Xiao Feng
Published: November 2013

This paper introduces the current information hiding method based on XML, Analyzes their advantages and disadvantages. According to the characteristics which the change of XML document tag attributes order does not affect the document uses, I propose a more subtle and easier method to achieve information hiding. Experimental results show that: the method is correct, has strong concealment and robustness.
A Layered Context-Aware Agent for Mobile Applications Based on Users Needs Hierarchy
Authors: Peng Min Jing , Li Bo , Liu Meng , Zhu Ming Liang
Published: November 2013

In order to improve the user’s experience in using mobile applications, a layered context-aware agent for mobile applications was proposed based on user’s needs hierarchy. In the proposed model, the layers were employed to distinguish different types of needs in the hierarchy and the priority of different layers was used to determine the time for showing the recommendation information. At first, the agent framework was proposed. And then, based on the proposed framework, the layered context-aware agent was developed based on the Maslow’s theory. At last, an experiment was conducted on the comparison between two methods of the random model and the proposed layered model for sending recommendation messages. And the result verified that the proposed agent was effective.
Study on Rights of Customers in Electronic Commerce of Computer
Authors: Long Xin , Ma Chun Yang
Published: November 2013

In this paper, electronic commerce is presented. The rise of e-commerce has greatly expanded the consumer market, increasing consumer access to information, it provide a more convenient way of consumption with low cost, the amount of information and market transparency is also increased at the same time, so as to enable consumers to benefit the whole. However, due to the virtual network and related laws and regulations lag, so that the interests of consumers in the new trading mode is damaged, it seriously dampened the enthusiasm of consumers and restricting the development of electronic commerce, it also brought severe challenges to the existing consumer protection law.
A Developed Adaptive Tracking Control Technique for a Four-Rotor Helicopter with External Disturbance
Authors: Lu Fei Fei , Chen Fu Yang , Cai Ling
Published: November 2013

This paper deals with the tracking control problem of attitude angles for a four-rotor helicopter with external disturbance. A new direct adaptive compensation controller and its parameter adaptive laws are designed based on the Lyapunov stability theory, and the designed contorller can not only compensate the disturbance efficiently, but also can make the attitude angles of the four-rotor helicopter track a given reference output. By using the Barbalat lemma, the systems state tracking performance is proofed. Finally, the proposed adaptive technique is evaluated by a simulation example.
Research on Internet Online Evaluation System Based on OPC Technology and Progressive Level Model
Authors: Ran Hui Zhen
Published: November 2013

Because of the appearance of mobile office and distributed office in Internet communication system, which has brought great opportunities for development of real-time and interactive online evaluation system. In this background, this paper designs an OPC technology which is compatible with multiple internet distributed interface, it can realize the distributed online evaluation. This paper designs a direct switching algorithm procedure of OPC with multiple interfaces, so it can realize the evaluation of interactive and real-time. About the model and the level, this paper uses hierarchical model to evaluate network. Finally based on the evaluation of ideological education online as an example, we conduct the performance of the Internet online system for practice research, it is found that the Internet online evaluation system has well real-time and interactive features, it provides the theory reference for the research of internet ideological and political education.
On Internet Resources Service System Based on SN-Network Service Mmodel and SOA Framework
Authors: Gang Shuai
Published: November 2013

In recent years, the number and size of Web services on the Internet have a rapid development. Industry and academia start to study the web service. In Internet resources, if the web cannot be found, the web service will become meaningless. So for web services, large-scale managements and problems are the keys of the study of Internet service resources. This paper studies large-scale distributed web services in network resources based on SOA architecture ideas. It also designs the unified management and organization system of ideological and political education which treat the ideological and political education as the content. It proposes SN network resource service model of ideological and political education. With the development and popularization of the Internet today, the study on Internet resources of ideological and political education in this paper provides a theoretical reference for the innovation of the ideological and political education.
The Design of the Safety Monitoring System for the Coal Mining Explosive Library
Authors: Ji Da Xuan
Published: November 2013

To ensure the normal operation of the coal mine production and the demand for the safety management of the coal mine is increasing. the management of the coal mining explosive library is more important.
Design of Electrostatic Precipitator Power System Based on Auto Disturbance Rejection Controller
Authors: Yin Shu Jun , Li Xue Ren , Luo Ji Geng
Published: November 2013

The paper designs a three-phase high voltage power supply system based on active disturbance rejection controller which make single-chip microcomputer ATmega128 as the main control chip and the system improve the stability and control precision of dust removing power. Engineering practice shows that, the DC power supply system has the advantages of convenient operation, high work efficiency, system stability.
Ab Initio Study of Structural and Optical Properties of SrTi0.5Nb0.5O3
Authors: Pan Hong Liang , Li Teng , Yang Shi Liang , Liu Yi Ming
Published: November 2013

The electronic structure, including band structure, density of states ( DOS) and optical properties of SrTi0.5Nb0.5O3are calculated from the first principles of plane wave ultra soft pseudo potential technology. The calculated results reveal that due to the electron doping, the Fermi level moves into the conduction bands and the system shows metallic behavior. The optical properties are also discussed in detail.
Research and Implementation of Centralized Intelligent Substation Protection and Control System
Authors: Li Peng , Liu Feng Zhen , Xu Jian Guo , Jiao Hong Zhi , Li Bao Fu , Cao Hui Yan
Published: November 2013

A centralized mode of protection and control system based on digital information is proposed, communications platform networking, information sharing standardized characteristics of intelligent substation. This model describes the centralized protection and control system architecture and its main hardware, research on the time required for the system strategy and the "triple nets" and other key technologies, and put into implemented and applied. At Hejia 220kV substation intelligent centralized protection and control system set its key consideration on functional integration, improve equipment integration, optimize resources, and information sharing, System model for the future direction of development of intelligent substation has a leading and exemplary role.
Research on Data Collection and Control System for the Pump Units of Oil Pipeline Based on CompactRIO
Authors: Sun Fei , Dai Jian , Song Jun Yuan
Published: November 2013

To monitor and control the pump units of the oil pipeline, the system is expected to not only have a high instantaneity and control precision of measurement, but also keep highly reliable and stable in horrible and changeable environments. This study, taking the CompactRIO module by NI Company as the data collection control unit of system, introduces the design and realization of the monitoring system of the pump units of oil pipelines; besides, in the experiment on the system, ideal findings are obtained.
The Classroom Intelligent Control System Based on Wireless Communication
Authors: Wang Hong Mei , Long Xu Ming , Cao Hong Yao
Published: November 2013

In order to save energy and to implement the intelligent of the classroom management, we design a set of classroom intelligent management control system based on Wifi and Zigbee communication, for the application of embedded technology, network technology, remote control technology, and the Android mobile phone software platform, realize the classroom automatic lighting, manual and computer remote control, mobile control management control and other a variety of ways. Classroom nodes subsystems curtain automatic control, Light to adjust, the human body detection, fire alarm and classroom information real-time query functions, the software system provides a platform for information broadcasting and feedback, so that make the campus the classroom management intellectualization, humanized, both saving energy and reducing the workload of the administrator.
Sky-Hook Control of Vehicle Active Suspension with Electro-Hydrostatic Actuator
Authors: Kou Fa Rong
Published: November 2013

A kind of vehicle active suspension based on Electro-Hydrostatic Actuator (EHA) is put forward. The suspension system consists of two parts: spring and actuator with controlled force. The actuator includes hydraulic cylinder, hydraulic pump, controller, etc. In this paper, a quarter-car dynamic model is exactly established involving bond graph models of EHA parts. Under the input conditions of the given road profile and designed sky-hook controller, The prototype and test rig of EHA active suspension are developed and bench tests are carried out. The simulation and experimental results show that sky-hook active suspension with EHA provides better ride comfort, handling and stability than passive suspension.
An Improved Smart Home System Based on an Open Platform Model
Authors: Li Jing , Wang Fei Fei
Published: November 2013

Smart home generally creates a communication network for the family to provide necessary information accesses in the home network operating system. Under the controls of the hardware and the corresponding implemental agency, all the home network appliances control and monitoring are achieved. As the smart home becomes more advanced and complex, its urgent to search for an effective management model. In this paper, we propose a compatible smart home system management model and make some future development assumptions.
Design of Highway Intelligent Illumination Control System
Authors: Yang Yan , Song Jie , Yuan Tian
Published: November 2013

This paper researches the intelligent lighting plan for typical applications based on the environmental conditions and introduces an intelligent lighting control system applying to the highway. The system has various functions, such as ambient light sensor, adaptive control and remote control, and supports the feedback regulation of fixed illumination, operating lights after car light tests and other work modes. The system adopts visual response smoothing techniques to eliminate the visual discomfort brought by the sudden brightness changes, which improves the drivers visibility at night or under adverse weather.
New Criteria on Delay-Dependent Stability for Lurie Type System with Time-Varying Delay
Authors: Li He , Xu Zhao Di , Meng Xian Tao
Published: November 2013

This paper study the problem of the stability analysis for Lurie type systems with time-varying delay. By exploiting a suitable Lyapunov-Krasovskii functional, new criteria on delay-dependent stability are derived. Some better results are obtained by using a delay partitioning approach and reciprocally convex technique. Finally, numerical examples are presented to illustrate the effectiveness and reduced conservatism of the obtain results.
Study of Blind Source Separation on Transmission Line EMI
Authors: Li Zi Hua , Xiao Chun Yan , Gao Shuai
Published: November 2013

The transmission line is an important part of electrical system. Electromagnetic interference (EMI) signals can be picked up by transmission lines in a way of conduction or radiation, and interfere the sensitive devices located in the power source end and the load end, so it is important and necessary to separate and identify the EMI source signals coupling to the transmission lines in order to guide the electromagnetic compatibility (EMC) design and the further EMI diagnosis and suppression. Fast independent component analysis (FastICA) algorithm is studied and programmed, and its feasibility and separation performance are validated via simulation of BSS of three mixed signals and the average signals to interference ratio (SIR) is approximately 30 dB. The model of crosstalk of transmission lines is built and simulated, the interference signals are separated by the FastICA algorithm, and the average SIR is over 20 dB. Periodicity and spectral characteristics of the separated interference signals are analyzed, and the identification of interference signals is realized.
Design and Analysis of Ultra-Wideband Antenna with Triple Band-Notched Characteristic
Authors: Zhou Zheng Lin , Li Ming
Published: November 2013

A compact coplanar waveguide fed UWB (ultra-wideband) antenna with triple band-notched characteristics is presented. The rectangle radiation patch is used in the new design, and the bandwidth of the UWB antenna is extended by using circle corner for the rectangle cut from the ground. A parasitic element is added, whereas an inverted U-shaped slot is cut on the top of the CPW ground plane and a U-shaped slot is cut on the rectangle radiation patch. As a result, a triple band-notched characteristic is obtained, by which the potential interference between UWB and WLAN (Wireless Local Area Networks), C-band and X-band systems can be effectively reduced.
Time Synchronization for Large Scale Wireless Sensor Networks Based on Multi-Broadcast Gossip Algorithm
Authors: Shi Chao , Qiu Hong Bing , Wang Yun Yi
Published: November 2013

A scheme of time synchronization for large scale wireless sensor networks based on multi-broadcast gossip algorithm is proposed in this paper. It is allowed multiple nodes can broadcast their time information simultaneously. In order to avoid communication collisions and receiving confusion, according to graph theory the distance between any two broadcasting nodes is restricted as 3. It is proved for convergence performance of this scheme by using stochastic matrix theory. The performance for this scheme is discussed. The computer simulations are given to test and verify the theoretical analysis.
Based on LPC2388 Mine Microseismic Monitor
Authors: Bai Fan Gyan , Ouyang Ming San
Published: November 2013

A new type of mine microseismic monitoring is introduced. The microseismic signal by these downhole sensors collecting, through the differential amplification circuit and filter processing circuit, enhance the potential to voltage A/D conversion chip required. The conversion result is read by ARM controller. The controller processes those data using wavelet denoising, and uses the Ethernet control circuit using TCP/IP protocol transmitte themto the PC. On the trap circuit, Butterworth low-pass filter circuit, wavelet threshold denoising have been simulated, the experimental results basically reached the design requirements.
Study on Connectivity of the Publishing Network
Authors: Zhu Xiao Feng , Zhang Er Yan , Yang Li Jun , Wang Dan
Published: November 2013

Connectivity of the publishing Network is a basis problem to optimizing Network. In this paper, using of graph theory, through analyze graphs connected degree, obtain some good properties of Connectivity for the publishing Network.
Study on the Design and the Stability of Integrated Quartz Resonator
Authors: Lan Bai Yang , Tian Wen Jie , Zhao Qing Jiang , Lv Yi Su
Published: November 2013

By analysing the wafer, the electrodes, etc. according to the energy limit theory and the ANSYS finite element simulation, in this paper the author has designed the integrated quartz crystal resonator and oscillator circuit, and has carried on the experimental comparison on the stability of the integrated resonators, which have different structure, different electrode material and thickness. The experimental results show that the frequency stability of quartz crystal resonator is not only related with the electrode material and thickness, but also related with the structure. Under the same condition, resonator of asymmetric structure has better frequency stability, and the stability of Au-electrode was better than others, and its magnitude could reach 10 10. With the increase of the electrode thickness, the resonator oscillator stability will be improved.
Realization of SVPWM Controller Based on FPGA
Authors: Lv Hong Li
Published: November 2013

SVPWM controller is an important part of three-phase inverter. The paper is introduced the realization process for SVPWM controller based on EP3C40Q240C8 FPGA chip. The experimental results show that the control method is valid and feasible.
Optimization Based on Frequency and Driving Voltage Control for Wireless Power Transmission System
Authors: Shao Qi , Fang Xue Lin , Liu Hao , Li Hong Yi
Published: November 2013

This paper presents the frequency and driving voltage control based on PID controller for wireless power transmission system to restrain the influence of external disturbance and the movement of receiver coil. The phase difference of the voltage and current of the resonant tank is used by the frequency controller to control the frequency of DDS signal source to match the resonant frequency. The received voltage is detected wirelessly by the driving voltage controller to control the output voltage of switching power source to match the power need of the receiver. The experiment platform was built to verify the performance of the controllers. The results show that both controllers could operate normally to improve the stability and safety of the WPT system.
Study on Quantize-and-Forward Relaying with Interference Alignment for Relay Networks
Authors: Yang Ding Cheng , Xiao Lin , Zhang Tian Kui , Wang Wei
Published: November 2013

Relaying is one of the key technological enhancements for the data rate and coverage requirements of wireless networks. The interference alignment (IA) is a promising method for co-channel interference in wireless networks. In this paper, we investigate the quantize-and-forward (QF) relaying strategy with IA in the relay networks. The multi-user transmission aided by the relay is a common case in the wireless networks and can be modeled as multi-user relaying interference channels. We design a method for QF relaying strategy at the relay and propose precoding of IA to process the interference at each user. Then we derive the sum rate of the system and simulate it with the varying transmitted power and the distance between the user and the relay. The simulation results show that, the sum rate of designed QF relaying with IA has a better performance than those of the existing methods or processed algorithms.
A Node Localization Algorithm Used for POCT Microfluidic Detection
Authors: Lin Chao
Published: November 2013

This paper intends to study in the POCT (point-of-care-testing) combined with microfluidic technology as the breakthrough point. A localization algorithm is used for the ultimate miniaturization, portable, low cost, plug-and-play type PERS detecting instrument, which consist of telemedicine perception layer, and then collected data and location information more effectively transmitted to the server to deal with and feedback.
Modeling and Control of Sludge Pyrolysis in a Fluidized Bed Reactor
Authors: Li Shi , Zong Xi Ju , Hu Yan
Published: November 2013

This paper is concerns with the study of modeling and control of sludge pyrolysis in a fluidized bed reactor. Firstly, a mathematical model is established for sludge pyrolysis in a fluidized bed furnace, mass balance and energy equations are established. Then, the model is linearized at the steady-state point, two linear models are derived: state space model and transfer function model. The transfer function model is used in internal model control (IMC), where the filter parameter is selected and discussed. The state space model is applied in model predictive control (MPC), where controller parameters of prediction horizon length and control horizon length are discussed.
Attitude Protection Control for Side Stick-Operated Aircraft
Authors: Dong Yi Qun , Zhang Li Dong , Zhang Yi Jun , Ai Jian Liang
Published: November 2013

A control framework to limit aircraft Euler angles (pitch/rolling) under adverse side stick command adding is introduced. Attitude envelope of the aircraft pitch/rolling angle is discussed based on geometrical position of the aircraft relative to the ground. Control law of is established by using linearized predictive control strategy. The simulation test presents the performance of attitude protection restricting the Euler angles within the required envelop at 1,000m. Based on the test work discussed herein, the control work proposed in this paper is believed to be applicable.
Optimization Method for Wireless Control System Fault Detection
Authors: Ye Shuang
Published: November 2013

Wireless network control system has high failure rate, and is difficult to be diagnosed. Wireless network transmission signal effectively reflect the failure categories. In order to effectively detect the wireless network control system fault, this paper presents a fault detection method of correlation dimensional nonlinear timing characteristics for wireless network transmission signal, which mainly improves the traditional correlation dimension extraction algorithm. The method processes and analyzes the collected transmission signal of four types wireless network control system in fault condition, and then extract fault feature through an improved correlation dimension algorithm. It improves the calculation accuracy of the correlation dimension with a standard deviation 15% -30% than that of the traditional algorithm, and it significantly enhances the clustering distribution characteristics, reflecting its superiority in fault detection. Fault detection results show that the improved feature extraction method for correlation dimension can effectively detect failure in wireless network control system, whose accuracy is improved by 21.4%, and has great practical value.
Fault Diagnosis Method for a Network Control System with Long-Time Delay and Data Packet Loss Based on H∞ Filtering
Authors: Meng Jiao , Xu Qi Hua , Xiao Xiao
Published: November 2013

Improving network control system---NCS reliability and safety has important practical significance because NCS is a hot research subject in these years. Fault diagnosis methods are researched in this paper according to NCS with long-time delay and data packet loss. Firstly, given a NCS with long-time delay, a state observer is structured. Secondly, make the state estimation error equation equivalent to an asynchronous dynamical system having event incidence constraint according to whether the system having data packets loss. The problem of fault diagnosis is converted to filtering problem through structuring filtering residual system based on the observer, then giving a corresponding filter designing algorithm. The designed fault diagnosis filter system not only make sure the stability of the closed loop system but also make the residual systems norm less than given reduction level. Finally, the simulation results prove that the algorithm can diagnose faults effectively.
Adaptive Monopulse Angle Measurement for Meter-Wave Radar Based on Differential Constraints Technique
Authors: Jun Zhao Ying , Feng Li Rong , Liang Wang Yong , Jian Liu Wei
Published: November 2013

When detecting low-attitude targets, the angular accuracy of the meter-wave radar will descend because of the multipath reflecting from ground. Since multipath signals can be regarded as multipath jamming coming from the mainlobe, we propose an angle measurement based on the mainlobe multipath jamming suppression through differential constraints technique. The weight of the new approach is obtained through certain constraints on the sum-difference beams, which can suppress the jamming and keep the curve of the monopulse ratio unchanged simultaneously. Then form sum-difference beams and calculate the ratio of the monopulse ratio of the target. Finally, obtain the angle of the target through the determination of the smallest difference between the monopulse ratio of the target and the quiescent monopulse ratio. The method proposed in this paper can preserve good precision of the measurement angle. The result is verified by computer simulation.
Data Transmission System Design for Environmental Monitoring System Based on 3G Network
Authors: Sheng Shi Yue , Yi Jian , Zhu Qing Yuan
Published: November 2013

As the accelerated development of the existing mobile communications and Internet integration, high-speed mobile access and Internet Protocol-based service become mature for different kinds of applications, which provide a great convenience for the remote wireless monitoring, mobile data transmission and so on. In this paper, an environmental monitoring data transmission system based on 3G networks is designed to transmit environmental data which is collected through sensors to server-side. The data transmission system is functioning with remote data transmission, and monitoring data reviewing at remote terminal any time. Scientific monitoring data can accurately, timely and comprehensively reflect of the various environmental parameters on-site detection status. The system components of environment monitoring platform based on virtual instrument is introduced firstly. Then, the network transmission system scheme based on Socket communication is proposed. Finally, the data transmission between LabVIEW application of monitoring terminal and PHP application of server-side through Socket interface is achieved. This system transmits well, and queries conveniently. It is safe and timely while being applied in environmental monitoring data transmission.
Assessment and Monitoring Quality of Communications Network Based on Feature Selection and Probabilistic Neural Network
Authors: Du Cui Feng , Xu Qiang , Li Ji Hua
Published: November 2013

Using feature selection and neural networks to experiment the data, then we bring a warning model of user complaints. It is the core that using the known information of network index sample to analyze and discriminate. First, the training samples need to be extract, because there are too many features in training data will have an adverse impact on machine learning classification algorithm. Using extraction method to explore the feature subset with feature, feature subset is a set of feature vectors, then the feature vectors are input into the probability neural network prediction, find out the best features quantum set. This model can be achieved using the MATLAB software, and it is operational, and it can be extended to the network quality assessment and monitoring practice.
Distribution Line Monitoring System Based on Internet of Things Technology
Authors: Sui Jia Yin , Wang Ying Nan , Xu Chun Xin
Published: November 2013

Distribution automation is an effective method to realize fault detection and localization. It is not suitable for use in the comprehensive promotion in the distribution network because of the high investment and maintenance requirements. It proposes the monitoring system design principle firstly. The distribution line monitoring system based on internet of things technology is practical and of high scalability. It solves the problems in detection of single phase grounding fault, the terminal power supply and communication network. This system records peak current when zero sequence voltage a communication terminal monitors is greater than a certain value. A variety of power supply by solar energy, lithium battery backup and terminal itself can provide the power supply and wireless communication power supply. The system is suitable and practical for application in the distribution line.
A Novel Key Management Scheme for Cluster Based Wireless Sensors Networks
Authors: Diop Abdoulaye , Qi Yue , Wang Qin
Published: November 2013

WSN comprise of large number of sensor nodes with different hardware abilities and functions. Due to the limited memory resources and energy constraints, complex security algorithms cannot be used in sensor networks. Therefore, it is necessary to well balance between the security level and the associated energy consumption overhead to mitigate the security risks. In this paper, we present A Novel Key Management Scheme for Cluster Based Wireless Sensors Networks (NKMS). The security analysis demonstrates that NKMS is an effective solution to the key management of cluster based wireless sensor networks.
The Establishment of D, E Grade GPS Control Network and Fourth-Order Leveling Network in Laicheng Industrial Zone of Laiwu City
Authors: Wang De Bao , Yu Mei Lan , Yang Wen Jing , Qu Jun Feng
Published: November 2013

The paper uses D level,E level and the level of GPS control network establishment satellite space geodetic network in Laicheng industrial zone in Laiwu, through the baseline calculating, three-dimensional unconstrained adjustment and two-dimensional constraint adjustment to get the WGS-84 three dimensional coordinates and 1980 xi 'an horizontal coordinatesthe of control points; then using the fourth-order levelling connection survey all D-level, E-level control points and part GPS control points to build vertical control network, for the GPS control points of the remaining we utilize quadric function method using GPS elevation fitting given its elevation seek to obtain three-dimensional coordinates of all the basic control points.
Quantization Error's Influence on the Channel Estimation
Authors: Wu Lin Jun
Published: November 2013

To improve the transmission performance of wireless channel, the improvement of the Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) channel estimation algorithm based on the superimposed training sequence is proposed. We take advantage of training and information sequences unrelated, without loss of bandwidth preliminary estimate the channel parameters; Then using the weighted factor of channel parameters between adjacent signal weighted average, get the final channel parameters. Compared with previous superimposed training sequence estimation method, using the algorithm has a lower estimation mean square error (MSE), and is suitable for the time-varying channel. The computer simulation results show that the estimation method improves the accuracy and performance of channel transmission.
Sparse Recovery Based on Squarewave-Like Sum Function Minimization
Authors: Li Ying , Miao Gang , Wang Jun Hua , Zheng Geng Le
Published: November 2013

For the problem of sparse recovery, an approximation algorithm, termed Squarewave-Like Sum Function Minimization (abr. SLSFM), is proposed. Firstly, norm is appro-ximated by squarewave-like sum function. Then sparse recovery is cast as Squarewave-Like Sum Function Minimization problem, which is solved by a fast iterative method. Finally, simulation results show that our algorithm has some advantages over most existing methods: it is more robust to noise and needs less measurement.
Design and Test of Subway 3D Point Cloud Data Obtained Based on Ground 3D Laser Scanning Technology
Authors: Cao Xian Ge , Yang Jin Ling , Li Dong Hai , Feng Jin Yu , Meng Xiang Lai
Published: November 2013

3D laser scanning technology can fast, efficient and accurate access high-precision measurement of the target point cloud data and provides the necessary conditions for the development of digital measuring. This paper gives an example of Subway and elaborates the method of 3D point cloud data acquisition, data processing and modeling, and verifies the feasibility of 3D visualization of Subway based on 3D laser.
The Galvanic Corrosion between Anodized 6061 Aluminum Plate and C1100 Copper Plate Couple
Authors: Chiu Liu Ho , Chen Kuan Hung , Tsai Chi Ying , Lee Shah Rong
Published: November 2013

The galvanic corrosion behavior of anodic AA6061 Al and C1100 Cu couples is investigated. Anodized AA6061-T6 Al plates were produced at different thickness of 1μm, 5μm and 12μm, respectively. The galvanic corrosion current of anodized plate and C1100 copper plate couples was measured using a zero resistance ammeter for 8 hours in two solutions, 3.5wt.% NaCl solution and 1.0 wt.% NaClO solution under temperatures of 25°C, 40°C and 60°C. The results show that the AA6061-T6 aluminum plate without anodizing produced the highest galvanic corrosion current, 1200 μA/cm2, among the tested specimens under flowing NaClO electrolyte at 60°C. Anodized AA6061-T6 aluminum plates with a 12μm anodized layer produced the lowest galvanic corrosion current, 15 μA/cm2, in a static 3.5wt.% NaCl electrolyte at 25°C. Severe corrosion attack was observed at the aluminum specimen with thin and non-uniform anodized layer after the galvanic corrosion tests. The anodizing AA6061 Al plate process can effectively reduce the galvanic corrosion of the AA6061 Al and C1100 Cu couples.
Polyethylene Glycol-Coated Polyimide-Based Probe with Neural Recording IC for Chronic Neural Recording
Authors: Tan Kwan Ling , Cheng Ming Yuan , Chen Wei Guo , Lim Rui Qi , Damalerio Maria Ramona B. , Yao Lei , Li Peng , Gu Yuan Dong , Je Min Kyu
Published: November 2013

Neural probe array is utilized in neural recording, in the aim to understand the neural activity. Silicon is the common substrate used in neural probe array. However, due to the rigid nature, the silicon-based neural probe array causes cell damage during implantation into the brain tissue. This would reduce the signal-to-noise ratio. Therefore, flexible polymer probe is more suitable as it can help to minimize the tissue damage and thus increasing the signal-to-noise ratio. The lack of stiffness for the flexible probe is solved by coating it with polyethylene glycol (PEG). It stiffens the probe and can be dissolved in water, which allows the polymer probe to regain its flexibility. The proposed integrated probe with reduced distance between probe and ASIC will further help to improve the signal-to-noise ratio during neural recording. The coated flexible probe regained original impedance of 14.1 kΩ at a frequency of 1 kHz. A bench-top neural recording with the flexible probe array in saline solution will also be acquired.
Study on Radar Absorbing Properties of Impure Sm2O3/Acrylate Coatings
Authors: Sun Hui Min , Zhang Ming Xue , Gu Zhao Zhan
Published: November 2013

The development and application of the stealth material technology are one of the key factors to develop the stealth technology. The painting type of stealth material has the properties of simply process, usableness and easy regulate, so it has been extensive concern. In the paper the impure Sm2O3/acrylate coatings were prepared using Sm2O3 and carbon nanotubes powder and their microstructure was studied by SEM. Furthermore it was studied on radar absorption properties in 1-18GHz and mechanics properties of the coatings. It is proved that the absorption effect of the coatings is the best when the thickness coating is 1.2mm and its solid dosage is 50wt%. Meanwhile mechanics properties of the films are very good.
Synthesis of Silsesquioxane-Contained Benzoxazine and the Thermal Properties of its High Performance Polymer
Authors: Yan Hong Xia , Jia Yuan , Feng Yi Chen , Li Ting Ting
Published: November 2013

A new kind of high performance benzoxazine (BOZ) was synthesized from p-aminophenol functionalized chloropropyl polyhedral oligomeric silsesquioxane (AP-POSS), aniline and paraformaldehyde through a solvent-free process. Fourier transform infrared spectroscopy (FTIR) was employed to characterize the structure of the new BOZ resin contained POSS (POSS-BOZ). The differential scanning calorimeter (DSC) was chosen to research the curing behavior of the new resin, and the thermo gravimetric analysis (TGA) was chosen to research the thermal properties. The results show that the POSS-BOZ is successfully synthesized, and the POSS-BOZ also exhibits better thermal performance in comparison with bisphenol-A benzoxazine (bA-BOZ).
Safe Analysis of Construction Material after Being Sintered
Authors: Zhang Hai Ying , Li Shu Zhen
Published: November 2013

In this work, leaching toxicity of MSWI (municipal solid waste incineration) fly ash by HVEP (horizontal vibration extraction procedure) and ALT (available leaching toxicity) as a function of temperature was analyzed. MSWI fly ash was firstly sintered at 700°C, 800°C, 900°C, 1,000°C and 1,100°C respectively for 30 minutes, and then underwent leaching toxicity analysis of heavy metals. It was found that leaching toxicity of the heavymetals in fly ash sintered at temperatures over 900°C is lower than the limit value described in Identification Standard of Hazardous WasteIdentification of Leaching Toxicity. Therefore, 1000°C is recommended to treat MSWI fly ash.
Sensing in Aluminum Alloy Welding
Authors: Kah Paul , Hiltunen Esa , Martikainen Jukka
Published: November 2013

With the emerging trends of automation of welding technology for high volume manufacturing and use of aluminum for lightweight construction, continuous efforts have been undertaken to improve sensing and data acquisition for automated welding of aluminum and its alloys. This work aims to present and compare various sensing methods i.e. touch sensing, through-arc seam tracking (TAST), vision and composite sensing for automated fusion welding of aluminum alloys. Sensing technologies used for sensing of the seam and weld process are analyzed with focus on difficulties specific to aluminum alloy welding. It is found that the automated welding of aluminum is a well-established subject and that solutions for most industrial automated aluminum welding needs can be developed by integrating ongoing advancement in the field of sensor technology.
Correlation between Applied Voltage and Electrochemical Properties of Micro Arc Oxidation Coatings Formed on AZ31B Magnesium Alloy
Authors: Song Xiang Hua , Lu Jian Hong , Yin Xi Jiang , Jiang Jian Ping , Kuan Annie Tanlai , Wang Jing
Published: November 2013

The correlation between the electrical parameter of applied voltage and the coating properties, especially the electrochemical properties of micro arc oxidation coating layer was studied in environmental friendly electrolyte under single-polar pulse power supply. The coating surface morphology and corrosion resistance was characterized by atomic force microscope (AFM) and electrochemical method. The coating thickness and the pores in the coating layer grow with increasing the applied voltage; also the surface becomes rougher at higher voltages. In the voltage range of 240 V to 320 V, the relative optimal voltage parameter is 260 V, which presents the smallest corrosion current density, three orders of magnitude lower than that of bare Mg substrate and the highest coating impedance value among all coatings. With increasing applied voltage from 240 V to 260 V, the corrosion resistance was improved significantly; then decreased slightly at higher voltages of 280 V to 320 V. The impedance spectroscopy fitting results show that the voltage parameter has more effect on the inner layer than on the outer layer of micro arc oxidation coatings and the coating property is more dependent on the compact inner layer.
The Virtual Design and Movement Simulation of Small Snow Removal Vehicle
Authors: Zhang Xue Jun , Zhang Xue Jin
Published: November 2013

To avoid the problem of mutual interference of moving parts and errors of assembly appears in the prototype design stage, this article is based on virtual design idea, a small snow removal vehicle has been designed based on virtual design idea, using pro/e 3 d modeling software in this paper. 3 d modes of parts of the small snow removal vehicle and virtual assembly have been completed. The mall snow removal vehicle has a throw snow impeller, a built-in worm gear reducer and a helix-collect snow set. The motion simulation has been operated. The design of the small snow removal vehicle is right according to the studying of virtual assembly and motion simulation.