bluuebunny/crossref_metadata_2025 huggingface dataset:
TOPSIS Method for Multiple Attribute Decision Making Problem in Intuitionistic Fuzzy Setting
Authors: He Yuan Yuan , Gong Zai Wu
Published: September 2013

This paper is concerned with a TOPSIS method for fuzzy multiple attribute decision making, in which the information about attribute weights is completely known and the attribute values take form of intuitionistic fuzzy numbers. A class of distance for describing the deviation degrees between intuitionistic fuzzy sets is used to measure difference between two alternatives. A model of TOPSIS is designed with the introduction of the particular closeness coefficient composed of similarity degrees. Then, we apply the TOPSIS method to aggregate the fuzzy information corresponding to each alternative, and rank the alternatives according to their closeness coefficients. Finally, a numerical example is given to show the feasibility and effectiveness of the method.
A Comprehensive Evaluation System of Association Rules Based on AHP
Authors: Yuan Jing Bo , Wei Xiao Lin , Ding Shun Li
Published: September 2013

Association rules analysis is an important subject in data mining. At present, association rules mining algorithms frequently generate a large number of association rules, but most of the algorithm evaluations make advances only from an aspect, which makes the users select difficultly. Therefore, the comprehensive evaluation of association rules has become highly necessary. A comprehensive evaluation system of association rules based on the AHP (Analytic Hierarchy Process) was presented, which can evaluate the association rules from multi-angle and multi-dimensional. Many evaluation results are integrated into the system, eventually presenting a unified comprehensive coefficient to users. Practical data make it clear that the comprehensive evaluation system is rational and superior.
A Probabilistic Propositional Logic System is an Event Semantics for Classical Formal System of Propositional Calculus
Authors: Liu Hong Lan , Zhang De Zheng
Published: September 2013

The well formed formulas (wffs) in classical formal system of propositional calculus (CPC) are only some formal symbols, whose meanings are given by an interpretation. A probabilistic logic system, based on a probabilistic space, is an event semantics for CPC, in which set operations are the semantic interpretations for connectives, event functions are the semantic interpretations for wffs, the event (set) inclusion is the semantic interpretation for tautological implication, and the event equality = is the semantic interpretation for tautological equivalence. CPC is applicable to probabilistic propositions completely. Event calculus instead of truth value (probability) calculus can be performed in CPC because there arent truth value functions (operators) to interpret all connectives correctly.
Cluster Algorithm Based on K-Means and Improved Particle Swarm Optimization
Authors: Wu Zhong Yong , Gan Li Li
Published: September 2013

To deal with the problem of premature convergence of the traditional K-means algorithm, a novel K-means cluster method based on the enhanced Particle Swarm Optimization (PSO) algorithm is presented. The algorithm can be had in the course of the introduction of adaptive Gaussian global extremum mutation operator, enhancing particle diversity of the population, thereby increasing the ability of global optimization algorithm. The experimental results show the proposed method can not only effectively solve the premature convergence problem, but also significantly speed up the convergence.
Method for Uncooled Infrared Image Processing
Authors: Ma Jia Lin , Zhang Xia
Published: September 2013

Uncooled infrared imaging system has been increasingly applied in both the national defense and various fields of national economy. Such popularity is attributed to many of its advantages, including small size, light weight, low energy-consumption and superior portability. However, as limited by the structure and the material of infrared detector and the manufacturing techniques, infrared images are plagued with low resolution and poor image quality. This paper mainly studies the uncooled infrared image processing based on the gray levels partition processing, gray levels stretching and histogram modification, it aims to enhance the visual effect of infrared image.
Research on the Method of GPS Height Conversion Based on Terrain Correction
Authors: Mao Ya Chun , Huang Xiang , Chen Jun Yu , He Qun , Ma Hong Bin
Published: September 2013

In this paper, through the surface of polynomial fitting precision analysis, obtains fitting after converting precision for normal height is mainly affected by the rate of change vertical deflection and higher order termsalso influenced by local terrain correction. The undulating topography is deduced and the calculation formula of cause height anomaly, this method is applicable to the complex terrain of area, will dividend increase formula one of the smaller constant, the calculating process of the intermediate results are returning to normal range, effectively avoid the central region of the singular integral. In the terrain change large region, attend to the influence of terrain correction, the surface fitting method for elevation conversion, can effective improve GPS elevation fitting the precision of the conversion.
A Novel Imaging Approach for Dispersive Target Electromagnetic Imaging
Authors: Huang Guo Rong , Zhong Wei Jun , Wang Chao , Wu Yuan Pei
Published: September 2013

A novel imaging approach for dispersive target electromagnetic imaging based on the time-frequency analysis is presented in this paper. On the foundation of researching the time-domain imaging principle of dispersive target, the basic theory of back projection imaging algorithm and time-frequency analysis is discussed. The sampling data obtained by simulation of target electromagnetic wave scattering which is accomplished by finite-difference time domain method (FDTD). According to the simulating data, after disposing by Wigner-Ville transfer, the sampling data is processed integral management in frequency-domain, and the imaging experiment is carried out. The experiment results show that the improved imaging arithmetic could estimate the shape of dispersive target and improve the imaging quality.
A General Identification Process of Moving Cells Based on MATLAB
Authors: Chen Zhi Peng , Liang Tian , Wang Jian , Qin Wen Chao , Guan Tian
Published: September 2013

This paper proposed and implemented a general identification process of videos containing moving target cells, using mature digital image processing technology and MATLAB simulation tools. The processing steps included video sub-framing, image reading, image preprocessing, target recognition, and etc. For videos containing moving target cells, three groups of experiments were tested to verify the feasibility of the processing algorithm. Results found that the algorithm could accurately identify the targets in the videos. Thus, the presented processing algorithm is acceptable to be a general identification method for videos containing moving targets.
Design and Research on Optimization Combination of UWB Pulse Waveform Based on Gaussian Pulse Derived Function
Authors: He Xue Wen , Han Sun , Fan Kuan Gang , Sheng Ying Fei , Cao Qing Mei
Published: September 2013

This paper analyses time-domain waveform and its unilateral energy spectral density based on the Gaussian pulse former 12 derivative functions. We could conclude that pulse forming factor has a closer relationship with different order number derived function affected the energy spectral density. Therefore, in order to maximize the approximate Federal Communications Commission (FCC) emission mask as much as possible, an iterative algorithm is proposed to optimize the linear combination of the Gaussian pulse former 12 order derived function. Compared with single differential Gaussian pulse, the simulation results show that after linear combination, new ultra-wideband pulse signal could greatly meet the spectrum utilization and indoor radiation mask standards promulgated by the FCC.
A Method of False Component Discriminant of EMD Based on Kolmogorov-Smirnov Test
Authors: Yang Wang Can , Zhang Pei Lin , Wu Ding Hai , Xin Zhou
Published: September 2013

In order to solve the problem that empirical mode decomposition (EMD) will cause false components in the process of signal decomposition, a method of false component discriminant of EMD based on Kolmogorov-Smirnov test was put forward. First, the original signal was decomposed into several intrinsic mode functions (IMFs) by EMD. Then the K-S test was used to calculate the similarity between each IMF and the original signal. The reasonable similarity threshold was selected for judging the authenticity of the IMFs. The IMFs of which the similarity values were less than the threshold value were determined to be the false components. The others of which the similarity values were greater than the threshold value were determined to be the real components. As a result, the false components were removed and the real components were remained. The vibration signal of bearing experiment indicated that the method of K-S test could discriminate the real components and the false components obviously. Then the false components were removed quickly and accurately and the real components of the original signal were obtained.
A Mechatronic System for Interactive Scan Plan Prescription during Real-Time Cardiac Magnetic Resonance Imaging
Authors: Yi Ding Rong
Published: September 2013

Real-time magnetic resonance imaging (MRI) has many advantages as compared to traditional MRI and can be used for the visualization of dynamic moving cardiac structures and functions without cardiac gating, as the fast data acquisition apparently freezes the motion resulting from heart beating and lung breathing. During the past decades, fast pulse sequences and image reconstruction algorithms had been developed to improve the temporal resolution with acceptable spatial resolution. However, the bottle neck of current real-time MRI systems is the availability of a user-friendly prescription tool to allow a MRI technician to prescribe the 6-Degree-of-freedom imaging plane of the MRI system. To meet the needs of real-time MRI, a 3D input tool is developed which facilitates user interactive specification of the center position and plane orientation of the MRI imaging plane. This paper reports such a custom designed 6 degree-of-freedom 3D input device, which allows the user to interactively and intuitively manipulate the scan plane to direct the real-time imaging capability to a target position based on the visual feedback provided on the MRI console in the form of real-time MRI images
Assembly Unit Division Method Based on Connection Strength
Authors: Liu Chang Chun , Zhang Shu Jian , Sheng Zhong Qi
Published: September 2013

Through analysing the assembly relation between the product parts, this paper divided the product parts into function parts and the connectors. Then the simplified assembly semantic relation graph model was established in this paper. The concept of assembly connection strength was introduced to express the complexity of assembly between the parts. Using the least assembly time as the goal to determine the optimal unit division number, the assembly unit division was accomplished based on the connection strength. Finally using the spindle box of HTC2500hs as an example to check this division method, the results show that this method has applicability and effectiveness.
Design and Implementation of the Web-Based Book Recommendation System
Authors: Wang Qi
Published: September 2013

The book recommendation system is mainly designed with Struts2 + Hibernate + Spring technologies in the Web design. This paper analyzes the functions of the system, introduces the systems architecture and the key technologies of system implementation, and proves the effectiveness and practicability of the system through experiment.
Research on Hover Characteristics of Ducted Fan with Coaxial Rotors
Authors: He Xing Zhu , Liu Shu Nan , Chen Yan Li , Wang Chun Xue , Yang Song
Published: September 2013

The method of handling respectively is used to refine the grid of ducted fan with coaxial rotors. Research the complex flow field of the ducted fan by numerical simulation to analyze its hover characteristics. The curve of the upper rotors lift, the lower rotors lift, the ducts lift with collective and the distance between rotors is got respectively. By comparing with the aerodynamic characteristics of ducted fan with a single rotor, results show that there is interference between the upper and lower rotors, the upper one interferes the lower one more heavily and interference is reduced with the increase of distance between the rotors; the duct of ducted fan with coaxial rotors can provide more lift than the one with a single rotor.
A Maximum Concurrent Network Flow Based Channel Assignment Algorithm for Wireless Mesh Networks
Authors: Zhang Lei , Wang Xue Hui
Published: September 2013

We proposed a maximum concurrent network flow based channel assignment algorithm (MCFCA) for wireless networks. In the MCFCA algorithm, we first use the maximum concurrent network flow algorithm to compute the maximum network capacity, then we assign each link a priority according to its link throughput, finally the channel is assigned to minimize the interference between neighbor nodes in the priority order. Performance simulation shows its effectiveness in channel assignment.
Influence Research of Flow Capacity on Temperature Field of Hydrostatic Thrust Bearing
Authors: Yu Xiao Dong , Zhuang Jian Xin , Meng Xiu Li , Tian Wei Zhen , Li Hong Ying , Wang Xaing Feng , Zheng Zhi , Jiang Hui
Published: September 2013

Temperature field of sector cavity multi-pad hydrostatic thrust bearing is significantly affected by flow capacity, and different flow capacity can carry different shearing heat, so temperature field of oil film is obviously changed. For this problem, the lubrication theory and the Computational Fluid Dynamics have been used to simulate influence of flow capacity on temperature of sector cavity multi-pad hydrostatic thrust bearing, to gain relationship between inlet flow capacity and temperature of sector cavity multi-pad hydrostatic thrust bearing, achieve the optimal design of such products. Results are shown that along with the flow capacity increasing, the temperature of hydrostatic thrust bearing also becomes lower under constant rotational speed condition.
Design and Implementation of Digital Oilfield
Authors: Xu Xiao Hong , Tian Hu , Fu Ji Lin , Sun Zhi Hua
Published: September 2013

Currently, all the global petroleum exploration and production companies are facing the pressure of lowing operating costs and improving labor productivity, now the emergence of the digital oilfield brings hope to these companies. This paper expounds the difficulties that the domestic digital oilfield encountered in the design of construction, and combining with the actual need of the oil fields in the development of oil-gas exploration, especially discusses the common problems in the construction of current digital oilfield and analyzes the existing oilfield technology and the development needs, finally, it put forwards feasible solutions.
Research on External Storages Management of Virtual Machine
Authors: Wang Xiao Rui , Wang Qing Xian
Published: September 2013

To deal with the problem of external storages management in multiple virtual machines environment, a system design scheme of external storages management is proposed with the idea of virtual memory management and protocol of object-based Network storage. Experiments showed that virtual partition could be created and repealed dynamic, the capability of partition could be increased dynamic with practical requirement, and write protection based partition could also be realized, flexibility of external storages management is enhanced greatly and usage efficiency also increased notably.
Research on Data Model in Dataspace
Authors: Jiang Shuo , Yu Shou Jian
Published: September 2013

The relational dataspace model was researched. A dataspace model-iDM was discussed. The advantages of dataspace model iDM were analyzed. Data model Vertical and Corespace were researched deeply. A dataspace system OrientSpace created by Vertical and Corespace was discussed, and it was analyzed.
Hierarchical Routing Algorithm for Wireless Sensor Network
Authors: Huang Liang , Wang Mei , Wu Jing
Published: September 2013

Aiming at the deficiency in the hierarchical routing algorithm, an improved routing algorithm of ring based multi-hop clustering (IRBMC) is developed. The main idea of IRBMC is to divide wireless sensor networks field into heterogeneous spacing rings to control the cluster number and build unequal size of clusters in different rings. To ensure the higher energy level nodes having more chance to become cluster head, the improved average residual energy estimation is used to determine the probability of nodes in each ring to be the cluster heads. Simulation results illustrate that IRBMC has a better result in prolonging the lifetime of network with the multi-level energy than the stable election protocol (SEP) for clustered heterogeneous wireless sensor networks, the low-energy adaptive clustering hierarchy (LEACH), and the ring based multi-hop clustering (RBMC) algorithm. The lifetime of IRBMC is 1.14 times of SEP, 1.57 times of LEACH, and 1.6 times of RBMC.
Parallel Algorithm for Solving Block-Tridiagonal Linear Systems
Authors: Duan Zhi Jian
Published: September 2013

Efficient parallel iterative algorithm is investigated for solving block-tridiagonal linear systems on distributed-memory multi-computers. Based on Galerkin theory, the communication only need twice between the adjacent processors per iteration step. Furthermore, the condition for convergence is given when the coefficient matrix A is a symmetric positive definite matrix. Numerical experiments implemented on the cluster verify that our algorithm parallel acceleration rates and efficiency are higher than the multisplitting one, and has the advantages over the multisplitting method of high efficiency and low memory space.
The Applications of Support Vector Machine in Natural Language Processing
Authors: Li Xiao Hua , Liu Shu Xian
Published: September 2013

This article provides a brief introduction to Natural Language Processing and basic knowledge of Machine Learning and Support Vector Machine at first, and then, gives a more detailed introduction about how to use SVM models in several major directions about NLP, and at the end, a brief summary about the application of SVM in Natural Language Processing is given.
An Improved Backoff Scheme for the IEEE 802.15.4 MAC Protocol
Authors: Hua Qiao Guan , Lin Mao Jian , Ning Guo , Bo Chen , Ning Dai , Long Zhang Chuan
Published: September 2013

To solve the impact on network performance by the mobile nodes and data transfer rate constantly changing,this paper proposes a improved backoff scheme for IEEE802.15.4, which uses Probability Judgement based on Network Load and Exponentially Weighted Moving Average (PJNL_EWMA). According to a real-time monitoring of current network status by probability judgement of network load , this method dynamically adjust backoff exponent by EWMA when the CSMA/CA begins. Compared the IEEE802.15.4 and MBS+EWMA schemes, the simulation experiments on NS2 platform show that the PJNL_EWMA scheme not only improves the throughput of the network, but also reduces the packet loss rate and the collision ratio,significantly improve the network performance.
Dynamics Simulation Analysis of Centrifuge Facility-Vibration Shaker System Virtual Mocking Based on Flexible Centrifuge Arm
Authors: Wang Yue Gang , Zuo Zhao Yang , Wu Jian Guo , Li Hai Bo
Published: September 2013

In order to study the dynamic characteristics of centrifuge facility-vibration shaker system, In the establishment of centrifuge facility-vibration shaker system multi-body dynamic model based on virtual mocking technology, the virtual dynamic model of the entire centrifuge facility-vibration shaker system more close to reality is built up by the transmission of finite element of flexible centrifuge arm. This paper describes how to build the 3-D virtual prototype of centrifuge facility-vibration shaker system by using Pro/e and ADAMS software, and how to create the modal neutral file of the centrifuge arm by using ANSYS software. Considering the system as a rigid-flexible coupling system, the dynamical simulation is carried out, and the results are benefit for the further research of its kinetic behavior, dynamic and variable characteristics basis and the design of such system.
Equipment Simulating Maintenance System Based on Virtools
Authors: Huang Wen Sheng , Zhou Ming Kai , Liu Jun Qin , Shen Bin , Yuan Rui Hong
Published: September 2013

The new weapons and equipment of our military is endless, which is becoming more complicated and technical. And its updated speed is more quickly, price is more expensive, field equipment number is less and less. It is very important for the maintenance support of our armys equipment that Virtual reality technology is used in the army equipment for developing virtual maintenance training system. And it is important guarantee for cultivating qualified maintenance personnel. This article designs the simulation maintenance system to a certain type of equipment for the object based on VIRTOOLS. It provides effective solution for equipment maintenance. This paper studies and discusses the maintenance system structure system, the key technology and its realization methods.
Research and Implementation of Intelligent Terminals Content Management System Based on Android Platform
Authors: Hou Rui Chun , Wang Xi , Wang Hong Nian
Published: September 2013

Due to the widespread use of the Android system, and its huge market space inevitably spawned many new applications to enhance the user experience. This project provides solutions for intelligent terminal based on the Android platform content management system, providing quick, accurate and comprehensive search experience of the intelligent terminal resources. System provides keyword search service based on user configuration, user input keyword, the system can find out in a very short period of time all of the resources of the device that contains the keyword information. In addition, the system also provides online user data synchronization, and data backup.
A Technology and Implementation of Embedding Watermark to Digital Pictures Dynamically
Authors: Ding Ai Ping , Dong Shu Juan
Published: September 2013

This paper introduces the technology that dynamically and automatically embedding watermark into digital pictures in ASP.NET web site without changing the original website code, and meanwhile gives the primary code which implements the function. The technology proposed in this paper is an efficient, cheap and feasible solution.
Design and Realization of the Positioning System for Workers in Pits Based on ZigBee Technology
Authors: Chen Feng , Sun Jiang Feng , Li Chang Qing
Published: September 2013

In order to satisfy the need of short distance wireless personnel positioning, a ZigBee compliant personnel positioning system has been designed. ZigBee technology and its characteristics was been introduced,and analysed the ZigBee wireless communication protocol, and using the CC2430 chip and CC2431 chip with positioning engine. On this based, the personnel positioning system is studied and the design of hardware, software of the wireless communication application development, achieve the underground personnel positioning. It can provide abundant data, graphic information, real-time monitoring well from ground personnel,.in accordance with the actual situation of coal mine provide attendance function. After the accident, the accident can be fast retrieval when underground staff location specific distribution, so as to formulate timely and effective rescue measures. This network system satisfied the needs of the underground personnel positioning requirements of wireless short distance, low cost, convenient construction, and easy to use.
A DHT-Based Networking and Addressing Method in the TCP/IP Building Intercom System
Authors: Shi Zhi Yuan , Lu He Ming , Lin He Zhi , Huang Lian Fen
Published: September 2013

In the TCP/IP building intercom system, broadcast addressing or query-list addressing are often used to obtain the IP address of the called party. However, these methods are limited by the function of the network equipment, intolerable resource costs, and high failure rate of querying. To solve such problems, this paper presents a networking and addressing method in the TCP/IP building intercom system which is based on Distributed Hash Table (DHT). Results from theoretical analysis and simulations show the feasibility and superiority of such a method.
I/O Coherence Faulty Tolerance Method for Multi-Core Processor Based on Retry
Authors: Guo Yu Feng , Zhang Ming , Gong Rui
Published: September 2013

I/O Consistency problem is one of the key issues which Multi-Cores Processor design must face. With increasing of core number and complicating of cache level, the probability of I/O coherence packets blocked would increase, which would decrease I/O system efficiency significantly. An I/O coherence maintaining method based on retransmission is proposed to improve reliability of the I/O coherence protocol. Experimental results demonstrate that this method can enhance the robustness of I/O coherence protocol effectively.
Research and Design of Broadband Trunking Communication Server Subsystem
Authors: Huang Lian Fen , Yang Xian Long , Gao Zhi Bin
Published: September 2013

Broadband trunking communication system is a specialized command and scheduling system for mobile communication, which has characteristics such as resources and costs sharing, high-efficient command and scheduling capability and so on. This paper firstly describes the evolution of broadband trunking communication. Based on the study of the system architecture and existing technologies, this paper proposes a way of simplifying the system architecture and elaborates the system framework into four modules including scheduler, server, base station and terminal. In the end, a program of broadband trunking communication server subsystem is designed and realized for voice service based on Linux platform. The results demonstrate the program has advantages of low-delay and high-efficient scheduling capability.
Simulation on Pressure Field of Gap Oil Film in Constant Flow Hydrostatic Center Frame
Authors: Yu Xiao Dong , Li Hong Ying , Meng Xiu Li , Tan Li , Wang Zhi Qiang , Li Huan Huan , Li Heng Wei , Li Zhen Guo , Wang Chun Zhou
Published: September 2013

In order to solve the force deformation of the hydrostatic center frame in the heavy type horizontal lathe, a simulation research concerning pressure field of hydrostatic center frame was described. The Finite Volume Method of CFX has been used to compute three-dimensional pressure field of gap fluid between the rotation workpiece and bearing pillow. This research theoretically analyzes the influence of angular velocity on the bearing pressure performance according to lubricating theory and computational fluid dynamics, and it has revealed its pressure distribution law of gap oil film. The simulation results indicate that an improved characteristic will be affected by rotating velocity easily, and oil cavity pressure creases by gradually with rotating velocity enhancing. Through this method, it can provide reasonable data for design, lubrication, experience and force deformation computation for hydrostatic center frame in the heavy type horizontal lathe.
Study on Equivalent Damping in Nonlinear Fluidlastic Damper of Helicopter Rotor
Authors: Wu Shen , Yang Wei Dong
Published: September 2013

A fluidlastic damper is a kind of novel lead-lag damper for a helicopter rotor, which possesses of stable dynamic properties but strong nonlinear performance. We have proposed dynamic equation of the rotor/fluidlastic damper coupling system to study the influence of fluidlastic damper dynamic characteristics on the helicopter rotor and calculated the response of the coupling system. The equivalent damping of the fluidlastic damper is identified from the response by decaying envelope-curves method, whose value is well consistent with that calculated by complex modulus method. Furthermore, the response of the coupling system with linear equivalent damping is found similar to that with nonlinear damping. Therefore, our linear model can basically reflect the dynamic properties of fluidlastic damper, promising the application of the equivalent damping of fluidlastic damper in predigesting aerodynamic stability calculation of the rotor/fluidlastic damper coupling system.
Co-Optimization of Output and Reserve with Significant Penetration of Renewables
Authors: Chang Xue Fei , Piao Zhe Yong , Lv Xiang Yu , Li De Xin
Published: September 2013

Co-optimization of output and reserve is necessary in order to provide maximum benefit to both consumers and producers. Once renewable generation sources like wind or solar begin to make up a large proportion of the generation mix, this co-optimization becomes much more difficult since the output of renewable sources is not well-known in advance. In this paper, a uniform reliability level is used as a constraint in the process of output and reserve. The proposed model is tested on the modified 5-bus PJM system. The co-optimization is performed by sequential quadratic programming techniques. The results show that the co-optimization results are strongly related to the uncertainties of wind power, the reliability level of the system, and the reliability of generators when wind makes up a significant portion of the generation mix.
Dynamical Analysis of a Cantilever Column with a Tip Mass Subjected to Subtangential Follower Force
Authors: Xue Yan Xia , Su Zhen Chao
Published: September 2013

Based on the theory of Bernoulli-Euler beam and d Alembert principle, the differential equation of a cantilever column with a tip mass subjected to a subtangential follower force is built, the solution of the differential equation under the specific boundary conditions is found, frequency equation is formed for computing the system frequencies, several cases of this system is investigated.
A Construction Method of Large V Order Steiner Four Elements Large Set
Authors: Li Xiao Yi , Xu Zhao Di , Chou Wan Xi
Published: September 2013

This paper proposed the basic idea of constructing method of large v order Steiner four elements large set under the blow of steiner three elements. At the same, this paper analyzed the conditions for the existence of v order Steiner four elements. This paper also proposed the construction method of v order Steiner four elements large set based on the initial block matrix permutation. This paper also introduced the entire construction process of 9 order Steiner four elements systems large set. This paper proved the number of 9 order Steiner four elements s(1)(9)of 9 order Steiner four elements large set is d(9)=v-8=1 .
Effects of Heating Rate on the Physical Property, Porosity and Expansibility of Sewage Sludge Ceramics (SSC)
Authors: Yue Dong Ting , Yue Qin Yan , Gao Bao Yu , Li Qian , Wang Yan
Published: September 2013

The effects of heating rate on the preparation, characterization, pore-forming mechanism and bloating mechanism of sludge ceramics were investigated. The experimental results indicated that physical properties of SSC were highly dependent on heating rate. SSC with higher expansion rate and lower water absorption could be obtained as the heating rate was between 4 °C/min and 5 °C/min. Porosity and expansibility of SSC were closely related to the heating rate. The heating rate could affect the relationship between the forming rate of gas and the forming rate of glass phase, and further influenced the bloating phenomenon of SSC.
Study on Integrated System of SCR and Muffler for Heavy-Duty Diesel Vehicle
Authors: Chen Guo Jin , Zhang Zhi Ming
Published: September 2013

SCR (Selective Catalytic Reduction) is widely used as a good solution of reducing NOx emissions. For NOx emissions and exhaust noise for heavy-duty diesel vehicles, the paper studied the acoustic performance for the integrated system of SCR and muffler. By analyzing the action of the perforated pipe, the exhaust pressure loss and the impact on the performance of the integrated system, the integrated system was developed for heavy-duty diesel vehicles to solve the technical problem on the integration and performance optimization for the SCR system and muffler structure. Extrusion-type vanadium-based catalyst replaces the current coated-type catalysts, and improves the reduction efficiency. The two-stage rough and fine filter and the heating device for the urea pump are designed to increase the adaptability of the SCR system. The research shows that through the structural improvements, the exhaust noise is reduced by 28.5dB.
A Vision Recognition Method of Wheel's Pose and Position Parameters in Bench Testing
Authors: Jia Xin , Guan Hsin
Published: September 2013

IA method is proposed here to recognize wheels pose and position parameters with computer vision aiming to the need of measuring wheel moving track in suspension bench testing. Firstly, several markers are fit on the target wheel manually. Secondly, image coordinates of character points is calculated with image processing method and least square ellipse fitting algorithm. At last, wheels pose and position parameters are calculated with rigid body motion POSIT algorithm, and then wheel moving track is measured in test. The algorithm of wheels pose and position parameters in bench testing based on the computer vision here will supply the base under the realization of the moving wheels pose and position parameters recognizing in real time.
Network Monitoring System of Multipoint Temperature Collection and Control
Authors: Ji Jian Hua
Published: September 2013

The temperature monitoring control is the most basic data parameters of the daily life and industrial production; it also has very important significance in multi-point temperature collection, accurate measurement and control monitoring. Therefore, this paper was based on SCM to deal with the temperature information data, design the multipoint temperature monitoring system, design the function of multipoint temperature collection and control network monitor system and main program, subroutine and so on. At the same time, this paper expounded the design methods of temperature acquisition, calculation and display. It used the thermistor temperature sensor to measure real-time temperature of the periphery environment, and voltage change that transformed from the measured temperature was transmitted to ADE0708 converter for modulus conversion, and the number was input to the serial interface and dealt with computer software to output conversion by SCM, digital tube was displayed in digital sections, it was the real-time temperature value. According to the converter channel port it could set output driving control signal, the display light had status indication and adjustment and control.
Research on the Choice and Control of Angle Parameter while Throwing Shot Put Based on Kinematics and Dynamics
Authors: Li Bao Zhai , Jiang Feng Yan , Xu Zhen
Published: September 2013

For the shot put movement, in throwing process the factors that affetc the result mainly have shot put action, athletes final exertion, athletes initial speed of throwing, athletes release height and shot-putting angle and so on. And this paper had a research on the choice of angle parameter of release in throwing process that affected the result of throwing shot put in the circumstances of certain initial speed of throwing and release height.The first it had built mathematical modeling of motion trajectory in the process of throwing the shot put, it analyzed the relationship model of the initial speed of throwing, release height and shot-putting angle. Secondly it understood that the scientific change of throwing angle can significantly improve the shot put throwing performance from the relationship model in the circumstances of certain initial speed of throwing and release height. This article was based on the research of angle parameter of throwing the shot put to provide a theoretical basis of the angle parameter of throwing the shot put of domestic shot-putter in peacetime training and competition. And the related data from the game and training of domestic excellent shot-putter was combined with the mathematical model to test and verify the rationality of the mathematical model and provide the scientific guarantee for domestic shot put movement to raise the level of sports.
Joint Inversion of Helicopter-Borne Electromagnetic Data Using Marquardt's Algorithm
Authors: Zhou Dao Qing , Deng Jun , Tan Lin , Cao Bao Bao , Hu Yue
Published: September 2013

The inversion stability of geological data can be enhanced by increasing the number of observation data or improving the accuracy of it. For the purpose of increasing the input parameters, the joint inversion algorithm based on Marquette’s method is introduced to the helicopter-borne electromagnetic system. Since double parameters of both the horizontal coplanar and vertical coaxial coils were taken into account, the stability of the inversion process is greatly improved. In fact, the joint inversion algorithm not only enhances the inversion’s stability, but also overcomes the limitation of the inversion with each single device in order to make the result closer to the real resistivity characteristics
Path Attenuation of Prediction Wireless Sensor Network Signal in Corn Field Based on the Generalized Regression Neural Network
Authors: Pan He , Li Tai Hao , Liu Zhi Gang
Published: September 2013

In order to solve the problem whether the wireless sensor network (WSN) nodes are quickly and reasonably arranged in the corn field, this paper proposes the prediction of wireless signal path loss in the corn field on the basis of generalized regression neural network. In this test, this paper takes carrier frequency of 433 MHz and 2.4GHz. According to the features of radio transmission, the corn is divided into three different growth period to measure the path attenuation. Attenuation value is the output Expectation value. Six influenced factors, namely the growth period, the transmitter antenna height, receiver antenna height, antenna gain , the carrier frequency and communication distance, are the input vectors. According to this, the GRNN prediction model is established.
Design of Rotational Speed Measurement System Based on the Hall Sensor
Authors: Kuang Xing Hong , Yao Zhe Yi , Yao Zhe Yi , Wang Shi Ming
Published: September 2013

This paper introduces a design of a STC89C52 microcontroller as the main controller, the motor speed is measured by the Hall sensor. This design uses integrated Hall sensor, which has a frequency response, high precision and anti-interference ability. This article describes the working principle of the method and method of use of the Hall sensor measurement speed
Research and Implementation of a Kind of Embedded System for Physical Training
Authors: Luo Xuan , Zhang Gang Hong , Xiao Ying , Gao Wan Lin , Zhang Han , Han Meng
Published: September 2013

This paper describes a physical training device based on SST89C51 MCU and used to solve the current problems in the physical training. It also presents details on how to select materials about the device and how to design the software and hardware. The results show that this system has many advantages, such as high speed, high precision, low cost and stability So it will have good market prospects.
Multi-Tasking Based on ARM9-μC/OSII A/D Acquisition System Design and Implementation
Authors: Wan Kai , Wang Ping
Published: September 2013

In order to achieve fast and efficient data acquisition and digital-to-analog conversion, based on ARM9 Micro-controller S3C2410 and embedded real-time operating system μC/OS-II of multi-tasking A / D acquisition system. Not only able to finish with high precision, reliable, stable, real-time multi-channel analog signals and on-off signal data acquisition, and displays it on the LCD in real time. Completed in ADS1.2 compiled environment, system software using C language and assembly language mix programming, which makes full use of the advantages of different languages. This paper constructs the system's overall design, hardware circuit design method is given in detail, at the same time describes key transplant μC/OS-II embedded operating systems and software design.
AR Prediction Model Based IMM Tracking Algorithm
Authors: Jia Teng Fei , Zhu Bo , Zhao You Xuan , Hu Han Ying
Published: September 2013

In view of the problem of robust tracking of maneuvering target under LOS/NLOS condition, an IMM algorithm based on AR prediction model is proposed (ARIMM). First of all AR prediction model is adopted to model the motion state, and secondly UKF and RUKF are utilized separately for the reason that the state LOS and NLOS have different distribution of observation noise, and the IMM filter is used to estimate the position of BS, and finally the position is used to update the current parameters in AR prediction model and make the AR model more matched with the true motion state. Simulation result demonstrates that the proposed algorithm performs better robustness under LOS/NLOS condition compared with the traditional UKF and RUKF.
A Broad Band and Wide Beam Microstrip Antenna Array
Authors: Xiong Xiao Feng , Chen Wei Dong
Published: September 2013

A novel broad band and wide beam microstrip helical antenna is proposed based on the modification of traditional helical antennas. Through selecting the appropriate operating mode between the axial mode and the normal mode, this new antenna can broad both the beamwidth and the bandwidth. To improve the gain of the antenna, An antenna array with 1*16 elements is designed and fabricated. Meanwhile, cavity-loaded feeding network is utilized for probe station measurement. The simulated impedance and radiation pattern are studied. The proposed antenna shows a wide impedance bandwidth from 7.6GHz to 9.6GHz for |S11|<-10dB, with wide 3dB beamwidth of E-plane about 1200, respectively.
Joint Registration and State Estimation for Two-Station Passive Tracking
Authors: Zhu Qiang , Li Jian Xun
Published: September 2013

Registration and nonlinearity are two crucial factors affecting the performance of the two-station passive locating system. In this paper, an online joint registration and data fusion algorithm is proposed to estimate the sensor bias and target state simultaneously using the angle-only measurements from the two ownship stations. The system model of the passive radar is firstly developed followed by the expectation-maximization (EM) approach dealing with the derivation of maximum likelihood (ML) function of the complete data. The unscented Kalman filter (UKF) is chosen to alleviate the influence caused by nonlinearity generated in the measurement function. Computer simulation shows that the proposed method is effective and reliable for this specific tracking scenario.
Acoustic Resonance Spectroscopy for Hazards Materials Classification
Authors: Zhou Lu Jun , Chen Qiang , Fang Jian Qing
Published: September 2013

In this paper, a measure system based on acoustic resonance is developed for hazards materials classification. It employs the lock-in amplifier as core processor to collect the acoustic resonance spectroscopy (ARS) of sealed containers which storied hazards materials. The transmitter and receiver are coupled externally to the wall of the container. The transmitter generates the sound by using a swept frequency source. The receiver on the opposite side of the wall of the container can detect the transmitted signal. The acoustic properties of hazards materials such as velocity and attenuation can be learned from the observed spectrum signal. Then multivariate methods are used to evaluate pretreatment methods, such as normalization, and classification possibilities of data collected by ARS in a laboratory environment. Principal component analysis (PCA) shows that it is possible to observe differences between samples using the data acquired from the ARS system. Further results obtained from Linear Discriminant Analysis (LDA) show that the identification rates for hazards materials classification are 100%.It is concluded that the ARS system has significant potential in the hazards materials classification.
The Design of High-Speed Synchronization Data Collection Node Machine for Multi-Chip CCD Measurement
Authors: Li Li , Yin Guo Fu
Published: September 2013

The high-speed synchronous node machine is developed for collecting high-precision and synchronous data from multi-chip CCD to measure the dynamic object with large field coverage by Visual technology. Node machine contains core, A/D converter module and Ethernet communication module. The FPGA of 600,000 gates which have a built-in FLASH chip is used as the core, which provides work-frequency of 10MHz and drive pulse for multi-chip CCD. A/D converter module configures the differential amplifier and builds 3-way 30MHz 16-bit A / D converter. 10/100M Ethernet protocol stack controller and RJ45 interface are internally installed in Ethernet module. This module also uses CC2430 chip to perform fast wireless synchronization control. Paper emphasizes how to implement the key technologies of multi-chip CCD for synchronous and precision measurement, and test the node machine by 5-chip CCD image data synchronous collecting with large field of vision. The node machine runs smoothly and reliably .The performance results of test show that the speed of image data collecting reaches up to 1800 frames/s, the speed of data processing reaches up to 150M Bytes/s and the transporting speed reaches up to 50M Bytes/s. The time of synchronous control is within 2 us.
A Switched-Capacitor AC-AC Converter for 220V/55V and 55V/220V Applications
Authors: Wang Zhong Ge , Wang Wei , Hui Cai
Published: September 2013

A novel type AC-AC converter based on the switched-capacitor principle is presented. The circuit topology of the switched-capacitor converter, the principle of operation, the equivalent circuit model and an example are described in this paper. In order to demonstrate the performance of this converter in the laboratory, this paper designs a prototype of 600W, 220V high-side voltage, 55V low-side voltage and switching frequency of 50 kHz. The experimental results verify the validity of the theoretical analysis.
Distributed Fault Detection System Design Based on the Communication Protocol
Authors: Peng Zhang , Ding You Hua , Guo Hai Qiong
Published: September 2013

This article analyze the transmitting characteristics of information in the modern And than, we find the basic design criterion of fault detection system in the complicated electronic devices. Than we discuss the possibility of achieving fault detection through a communication protocol. So we describe the design project of achieving detecting fault function through the communication protocol. At last, we brief introduce simulative detection function about fault detection circuit.
Multi-Agent Consensus Control under Markovian Switching Topology and Time-Delay
Authors: Kim Won Il , Xiong Rong , Wu Jun
Published: September 2013

In this note, the consensus problem of linear multi-agent systems with Markovian communication topology and time-varying delay is investigated. The topology of network is switched by Markovian process and the time-delay is considered to be time-varying and has a lower and upper bounds. A sufficient condition of mean square consensus is obtained in terms of linear matrix inequalities, and based on the condition, a controller design method is presented such that the multi-agent systems reaches to mean square consensus.