bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Acceleration Pulse Shape on Damage of the Specimen under Hopkinson High-g Loading
Authors: Liu Wei , Shen Rui Qi , Sun Xiao Xia , Ye Ying Hua
Published: November 2013

Based on the free Hopkinson pressure bar high-g loading technique, the pure cylindrical lead was mounted on the end section of the incident bar as a specimen to obtain the change law of the axial strain with the shape of acceleration pulses. Both the experimental tests without using pulse shaper and numerical simulations under sine-shaped acceleration pulses were performed and axial strain of the specimen was measured. Results revealed that the shape of acceleration pulse shows highly effect on the damage of the specimen. The axial strain of the specimen arises linearly with the increasing of the acceleration peaks whose durations are all 17μs; while, due to the complexity of plastic wave propagation, 135μs is a critical duration at which axial strain reaches to the maximum under the condition of different durations. The final axial strain of the specimen is determined by both the stress level and stress increment in every time step.
Numberical Simulation of Labyrinth Screw Pump with Separated Structure by Fluent
Authors: Li Jiao Jiao , Zhang You Cheng
Published: November 2013

3D model and grid was conducted in Gambit,while single-phase flow field in the pump was simulated in CFD code-Fluent,by means of multiple reference frame (MRF) method, Renormalization group k-ε two-equation turbulence model (RNG k-εmodel) and Semi-Implicit Method for Pressure-Linked Equations (SIMPLEC) algorithm. Aim at problems generated by pump body such as body length limitation on pressure increasing, three new structure of labyrinth screw pumps,rotor separated LSP,stator separated LSP and rotor stator all separated LSP, were put forward in this paper.The analytical results got by contrasted pump hydraulic performance of different structure models indicated that pressure increasing magnitude and pressure increasing rate of the three separated pumps is larger compared to the unseparated pumps,and the conclusion was achieved that pump performance can be optimized through separating rotor or stator into sections by making ring slots on screw body.
Dynamic Characteristics Analysis of the Mud Transfer Pump Rotor
Authors: Sun Jun Yuan , Xiao Ji Ming
Published: November 2013

The mud pump damming technology is a new idea put forward for realization of mechanization and automation of warping dam construction. A mud pump damming machine is studied, the FEM of the mud transfer pump rotor is built, modal analysis and rotor-dynamic analysis are carried out, natural frequencies and mode shapes under different constraints are obtained and the critical speeds of the pump rotor are determined, which will provide reference to improve the running reliability of the mud transfer pump rotor.
Impact Deformation Model of Thin-Walled Shell Filled with Explosive under High Axial Shock Overload
Authors: Sun Xiao Xia , Liu Wei , Shen Rui Qi , Ye Ying Hua , Wu Li Zhi
Published: November 2013

The thin-walled shell axial impact deformation of one-leg electric detonator with different density charge was studied. The impact stress was analyzed, and on the basis of kinetic theory the impact deformation model was established for the thin-walled shell filled with explosive. The experiments were verified at 60 000g, 80 000g, 100 000g and 120 000g by gas gun. The results show that shell length decreases and the plastic deformation zone diameter increases after impact. Damage deformation degree decreases with increased shell strength, reduced shell and internal charging mass summation and reduced impact velocity square. The model calculated value agrees well with the test data. The deformation model can be used to predict overload damage deformation for such detonator.
Stability of Restricted Homological Dimensions
Authors: Wu De Jun
Published: November 2013

In this note, the stability of restricted homological dimensions of complexes over commutative noetherian local ring is discussed. For instance, letRbe a Cohen-Macaulay ring andX, Y. IfXis bounded below with Gpd,Yis bounded above and =0 for all , then Rfd=Rfd+Rfd.
Numerical Calculation Method and Study for Frost Heave Deformation of Ground Heat Exchanger Pipe
Authors: Zhu Xiao Lin , Gao Qing , Yu Ming , Wang You Tang
Published: November 2013

For the frost heave deformation of ground heat exchanger with U-type heat exchanger pipe in subzero condition, a numerical calculation method was proposed by describing constitutive equations and establishing physical model. The finite element simulation study based on ABAQUS code was carried out to explore frost heave deformation behavior of saturated soil and interaction between pipe-soil interfaces ,focuses on the deformation of U-type pipe cause by saturated soil frost heave squeezing under the condition of different cooling rate.The distribution and change law of temperature,displacement, stress and strain on U-type heat exchanger pipe and soil were acquired.
Feedback Control of Parabolic Distributed Parameter Systems
Authors: Xing Hai Long , Cui Wen Shan
Published: November 2013

In this paper, the feedback control problem is considered for a class of parabolic distributed parameter systems (DPS). By employing a new Lyapunov-Krasovskii functional as well as the linear matrix inequality (LMI), a novel feedback controller is developed, which can guarantee the closed-loop system states uniformly convergent to zero. The stability conditions for closed-loop systems can be easily checked by utilizing the numerically efficient Matlab LMI toolbox. At last, a numerical example shows the effectiveness of the presented LMI-based methods.
A Human Target Detection and Tracking Method Based on Adaptive Difference and GVF-Snake Algorithm
Authors: Zhang Xue , Xie Wei Cheng , Huang Chao , Xu Qiang
Published: November 2013

Detection of Frame difference fails when the human target is stationary in course of moving, this paper presents a method based on combination of adaptive difference and GVF-snake algorithm to solve it. Adaptive differential detection algorithm can accurately extract the target contour, and use it as the initial contour of GVF-snake model which cannot automatically extract it after we got the target. In the process of detection and tracking, calculating GVF field of the whole picture consume too much time, so we use the method of sub-region to improve the real-time. The experimental results show that, the algorithm can provide the actual body contour for GVF-snake model, and effectively track whether the target is stationary or moving.
Application of Low-Voltage Carrier Meter Reading System in the Electricity Network Management
Authors: Jiang Jun Hai , Yang Xiao Hui
Published: November 2013

Through analyzing the carrier meter reading system functions, characteristics, composition, Introduced the application of carrier meter reading technology in the power management system. As the carrier meter reading technology continues to improve, electricity management more standardized and scientific, automatic meter reading system technology will be a important means in low voltage automatic management and improving the service level.
A Design of Short Range Wireless Communication Module Based on nRF24L01
Authors: Kuang Xing Hong , Wang Shi Ming
Published: November 2013

This design is a short-range wireless transmission module based on nRF2401, which carries out the data acquisition, short-range wireless transmission, the data display and the port communications between computer and MCU via RS232 serial port. The sensor node circuit based on nRF2401 module was implemented in the paper. The main communication flow chart is described in detail.
Intelligent Automation and Control Technology Based on Energy Meter Testing and Storage System Construction Model
Authors: Shao Huai Ling , He Zhi Qiang , Xu Er Qiang , Liu Lei
Published: November 2013

Explains smart energy meter testing and storage systems,the background,analysis of the current development of the industry at home and abroad,focusing on Metrology Centre of Electric Power of Henan meter verification and storage systems,the content of the system in key technologies summary,the process of building the proposed risk control measures.
Analysis for Impacts of Detection Error Rates on Optimal Decisions of Closed-Loop Logistics Network
Authors: Zou Mu , Gu Qiao Lun
Published: November 2013

In the closed-loop logistics network, in order to ensure the reusing degree of the collected used-products, its needed to test and evaluate the used-products that are waiting for being collected. This will inevitably appear errors of the status inspection, thus affecting the optimal values of the closed-loop logistics network. In this paper, a closed-loop logistics network planning model with detection errors is established, and the impacts of the detection error rates on the optimal solution of the logistics network have been analyzed.
Metrorail Train Safety Monitoring Central Node Network Computing Environment
Authors: Hong Hai Feng , Chang Zhen Chen , Yang Chen Hui , Wang Xue Dong
Published: November 2013

Metrorailtrain safetyguarantee and accident preventive measures become more stringent as severity of collisions and derailments happens frequently. Aninnovative safety monitoring and early warning network technology is discussed. This computing environment named Centralnode is used in several Metrorail trains under working condition. It integrates trains real-time dataaccording to aspects of vehiclesinterconnection, function service models and characteristic, uniform storage structure, circulation mechanism, diagnosis fusion interface. It improves the vehicles fault diagnosis accuracy and effectiveness.
Development of End of Line CAN Bus Test System in Electric Vehicles Based on LabVIEW
Authors: Nan Jin Rui , He Liang , Lin Cheng , Sun Can
Published: November 2013

With the wildly application and development of CAN bus technology in the electric vehicles domain, the majority of domestic automobile manufacturers will introduce CAN bus to more and more cars, and the techniques and methods of testing these cars also need to be updated and developed. The traditional means of detection and diagnosis, cannot fully meet the need of the cars' production test, maintenance and diagnostics of body distributed control technology. In this paper, a scheme of the system with a portable computer is establish for the practical application to the EOL CAN bus test, and then design and research of the testing system software are followed. To develop establish the system scheme, we study in depth and explore test methods and management, and design two test modes which are manual monitoring mode and automatic monitoring mode in view of the practicality and re-usability of the test system. In the process of system software development, we program in LabVIEW, make a research and optimization of Microsoft office accesss database connection for both software, and design user interface program of database maintenance and management finally.
Design of the Wire Rope Cleaning and Detection Line Control System Based on Touch Screen and PLC
Authors: Gao Yan Fei , Li Guo Ping , Jiang Chun Dong , Li Ying Jun
Published: November 2013

This paper puts forth an overall plan of integrated control system based on PLC and touch screen according to the technological requirements of wire ropes cleaning and detection line. It introduces an automation control system composed of two parts by touch screen and PLC automation control system. The core of the control system is the PLC which uses I/O to achieve the control of the switch. Touch screen communicates with PLC by means of RS232 to complete all parameters input and actuators operations. First, it designs various modules of the hardware circuit according to the general scheme. PLC controls rough brush motor, high-pressure water cleaning motor, water drying valve, oil drying valve through I/O module. PLC controls take-up motor by D/A output module. It uses temperature controller to realize automatic heating control in the process of water heating and oil heating. At the same time the temperature controller communicates with PLC by means of RS485. Then, it designs the software of PLC control system which adopts the idea of modular design. As to the software of PLC control system, many programs are designed such as manual control function, automatic control function, communicating function and so on. Finally, it designs the Human Machine Interface system which completes many functions such as manual control operation, automatic control operation, parameter setting, system diagnosis, historical records and help system. The system makes the automation and intellectualization to be realized. It can monitor parameters real-time and improves production efficiency.
Research on Precision Detection and Error Compensation Technology for 3-Axis CNC Milling Machine
Authors: Xu Hong Hai , Dai Chen
Published: November 2013

Error detection and compensation technology is an economical and effective method for improving the precision of CNC machine tool. The paper established the geometric errors model of three-axis CNC milling machine based on homogeneous coordinates transformation theory. Error detection is tested by digital ball bar and error compensation software is developed for XK7132 milling machine, the compensation effect is evaluated by a laser interferometer. The results show that the precision of CNC milling machine is improved effectively by the proposed method.
3D Modeling and Closed-Form Inverse Kinematics Solution for 6dof Surgical Robot
Authors: Farah Edris , Liu Shao Gang
Published: November 2013

Since robots began to inter the medical fields, more research efforts and more attention have been given to this kind of robots. In this paper six degrees of freedom surgical robot was studied. The Denavit-Hartenberg parameters of the robot have been computed and 3D model has been built by using open source robotics toolbox. The paper also discussed a closed form solution for the inverse kinematics problem by using inverse kinematic decoupling method.
Residual Analysis in Inverse Identification of Total Thrust on Shield Tunneling Machine
Authors: Chen Kui , Zheng Zheng , Zhang Qian
Published: November 2013

Total thrust on shield tunneling machine is the most important mechanical quantity, while its also the core parameter which can reflect the geological adaptability of the shield. Mechanical model of total thrust is established by applying the mechanical analysis firstly. Multiple regression method is applied to indentify undetermined coefficients of mechanical model. Based on the on-site data acquired from Rd. TieDong to Rd. ZhangXingZhuang of Tianjin No.3 subway project, regularity and compositions of model residual are discussed and inverse identification model of total thrust is further proposed. The comparison between identification results and the on-site data verifies the feasibility of inverse identification model. Analysis results indicate that inverse identification model can dynamically reflect the relationship among total thrust, operating parameters and geological parameters. This work can offer helpful references for thrust selection and real-time control.
Process Route Optimization for Machining Center NC Milling Manufacturing
Authors: Ma Zi Qin , Zhang Peng , Gu Meng , Sun Li , Sun Xiu Ling , Cheng Qiang , Wei Jiang
Published: November 2013

There are some characteristics about CNC milling machining centers, such as the procedures are concentrated, the procedure steps are complex, the machining cost is expensive and so on. A mathematical model was established to optimize the process route for machining center NC milling manufacturing. It wants to make the time of machining a single part is shorter or the cost of machining a single part is lower. A using example was given.
Experimental Research in Wind Tunnel of Aerodynamic Characters for New-Type Energy-Saving Conductor
Authors: Li Xin Min , Zhu Kuan Jun , Liu Bin
Published: November 2013

New-typedenergy-saving conductor can obviously increase conductor conductivity ability, and reduce the transmission losses. But for the changes of structure and surface properties, its load and the vibration impact characteristic are not enough comprehensive, so it is difficult to effectively guide the energy saving design of the conductor. Making use of the wind tunnel test, the aerodynamic character of various conductorsare obtained for single,double, four and six bundle conductor. The result of research is benefit for the far-ranging application of energy-saving conductor.
Design and Analysis of the Weft Accumulator of the Angle Interlocking Multilayer Loom of Carbon Fiber
Authors: Bai Yu , Yang Jian Cheng , Zhang Qing , Wang Hua Qing , Qin Jian Feng , Yang Kai , Hu Shuang Hu , Jiang Xiu Ming
Published: November 2013

According to the characteristics of carbon fiber and design requirements of angle interlocking carbon fiber multilayer loom, the fixed-length airflow weft accumulator is adopted, so as to realize the radial yarn unwinding. To get the accurate motion law of yarn under the effect of air flow, Solid works is introduced in 3D modeling and integrated design. In addition, the statics and dynamics analysis of weft accumulator has been carried on through the ANSYS and ADAMS software. The results of analysis show that the design is reasonable and the movement is smooth.
Process Management Evaluation on Machinery Manufacturing Enterprises
Authors: Lv Ling , Song Yu Tao , Zhang Sheng Fang
Published: November 2013

The level of an enterprises process management related to its existence and development tightly, in order to evaluate it accurately, the evaluation index system was presented, which was formed by 10 first level indexes and 39 second level indexes, in which the latter is the meticulous and materialization of the former. The methods of evaluation by total marks, weighting comprehensive evaluation on multi-index system and fuzzy comprehensive evaluation were applied to the process management. Compared with the other two ways, the fuzzy comprehensive evaluation is more accurate and comprehensive since it settle the quantification of the nature indexes during the analysis process, and it also solve the multi-factors evaluation who have different unit.
Synthesis of the Gold-Supported Chitosan-Modified Nanomaterials and Effect of Preparation Conditions
Authors: Tong Xin Li , Wu Zhi Dong , Luo Xuan , Yan Yong Tao , Wang Yan Hua
Published: November 2013

In the present work, a new composite gold-supported chitosan-silica (Au/CS-SiO2) nanomaterial has been synthesized via organic modification and chemical reduction method. Firstly, the hybrid chitosan-silica (CS-SiO2) material was synthesized by modification of silica with chitosan under suitable reaction conditions. Furthermore, based on the ligand effect of chitosan molecule and the reduction ability of organic alcohols and ascorbic acid, gold nanoparticles were generated and fixed on the surface of hybrid CS-SiO2 material, which successfully leading to production of the composite Au/CS-SiO2 nanomaterial. The obtained samples were characterized by the infrared spectroscopy, X-ray diffraction and transmission electron microscopy. Moreover, thermogravimetric analysis was also used to examine their thermal stabilities. It was found that the reducing agent is closely related to the size, shape and amount of gold nanoparticles, and the modification of chitosan decides the stability of the material. These materials can exhibit promising application as the catalyst in chemical field.
Synthesis and Visible Light Photocatalytic Activity of Spinel MAl2O4 (M=Mg, Zn, Cu)
Authors: Jiang Yan Yan , Zhang Ji Wen , Hu Zhi Qiang , Liu Jing Xiao
Published: November 2013

Aluminium spinel MAl2O4(M = Mg, Zn, Cu) photocatalysts were prepared by a sol-gel method. The prepared samples were characterized by X-ray diffraction and transmission electron microscope. The results indicated that the samples possess a single spinel-type structure. Ultraviolet-visible diffuse reflectance spectra showed an extension of light absorption into the visible region. The spinel MAl2O4photocatalysts exhibited high photocatalytic activity for the degradation of industrial dyes under high pressure mercury lamp and visible light irradiation, especially CuAl2O4. With the decrease of band gap of MAl2O4(M = Mg, Zn, Cu), the photocatalytic activity increases. The possible reasons are discussed from the crystal field theory and energy band theory. These characteristics make the aluminium spinel MAl2O4(M = Mg, Zn, Cu) photocatalysts to be promising candidates for the photocatalytic degradation of dyes.
Design of ECG Acquisition System Based on Matlab
Authors: Wang Xue , Niu Wen Liang , Liu Yuan Sheng
Published: November 2013

In order to more accurate detection of ECG signal and cost savings, this paper designed a set of ECG signal acquisition system based on Matlab. The system is composed of hardware and software. Hardware is made up of signal acquisition processing circuit and MPC82G516 microcontroller for AD conversion. The software mainly contains configuring Matlab serial to realize communication with MPC82G516 and uses abundant filter resources of Matlab to remove noise by differential, absolute value, smoothing and threshold selection algorithm of R wave detection, R wave peak provides the basis for calculating the heart rate. This paper uses Matlab friendly user interface for displaying received data to make the data more intuitive and read more easily.
The Relationship of Computer Graphics and Visual Intelligence - Research Studies
Authors: Šedivý Josef , Barta Cestmir
Published: November 2013

This article is an introductory study on extensive research and testing of visual spatial intelligence. Research respondents are students of technical universities with experience in spatial modeling on a computer. The aim of the research is to determine whether experience with spatial modeling is related to the level of spatial intelligence.
Design and Implementation of Data Migration on Housing Fund Archives System
Authors: Qi Chang Xing , Gao Xiao Ying , Zhao Lei
Published: November 2013

This paper analyzes the feature and necessity of data migration, and summarizes the commonly methods for it. According to the business characteristics of housing fund, an architecture model based on data migration is designed, and the functional process, the format of data packet and data specification is described according to the architecture levels. After the migration application is built, the operation data of the system are analyzed and further suggestions are given.
Design of Light Intensity Detection System Based on STM32
Authors: Zhou Yun Hua
Published: November 2013

With the needs of the society development, the light intensity detection technology has gradually into the lighting control, health care, biological research and other fields. Based on many fields and equipments for the light requirement, this paper proposed and designed a light intensity detection system. The hardware circuit used the STM32F103VB as the main controller; collocate with BH1750 digital light intensity sensor and LCD module, the power supply module. The design of software used the modular design, including data acquisition, data display, and intelligent control module. After the practical application, the detection system works well.
Structural States Monitoring with Fiberoptic Sensing Array and Probabilistic Neural Network
Authors: Li Peng
Published: November 2013

In this paper, structural states of a simple composite plate specimen are monitored using the fiberoptic sensing array and the probabilistic neural network. Firstly, structural states data were collected by a data collection system based on the fiberoptic sensing array embedded within the material, and were utilized as feature vectors of structural states. Secondly, structural states to be monitored were defined according to the load location and the load level. And the number of states was reduced by grouping neighboring elements to one category. Finally, the probabilistic neural network used for structural states monitoring was designed. The smoothing parameter in the probabilistic neural network was studied. And structural states were identified based on collected data. When this trained network is subjected to the measured response, it should be able to monitor the load location and the load level. The effectiveness of the proposed method was demonstrated.
Design on HEVC Streaming Media Player Based for Android
Authors: Zhao Ya , Zhang Xin Chen , Yang Zhen , Chen Jia Xin
Published: November 2013

The HEVC standard is mainly for high-definition and ultra-high-definition video images. The compression performance of HEVC has been further improved, but at the same time coding complexity is also higher than the existing standard. This paper firstly analyzed the architecture of HEVC decoding process and its mainly algorithm components. Then this paper designed how to use the Android NDK to transplant the HM decoding library, and then take the java native interface to resolve the HEVC stream. After decoding the data, this paper converts the YUV data into RGB format for display. The experiment results show that the design scheme is feasible and the HEVC player achieves the basic functions in the Android platform.
Test of the Run-Time Infrastructure Software
Authors: Tang Jian Bing , Hu Qi Gao , Zha Ya Bing
Published: November 2013

The run-time infrastructure (RTI) is a kind of software that is developed by the interface specification of high level architecture (HLA), which can offer a universal and comparatively independent service for simulation applications in the HLA simulation system. The RTI is the key underpinning software for the HLA simulation system. The quality of the RTI software is very important, and it will directly affect the system running. In order to guarantee the quality of the RTI software, it should be tested and evaluated roundly. The test and evaluation involve the functional and the performance aspects. The former can certify the RTI software correctness, and the latter can check the efficiency for the RTI software. Three editions of RTI software will be tested and evaluated in this paper. Both the function and the performance are tested, and the performance aspect is emphasized. The results show that the three editions of RTI software not only can meet software performance requirements, but can be used in generic real time simulation. Moreover, on the aspect of performance, the KD-RTI has some virtues, such as fast data-exchange velocity, low data loss and low latency.
Study on Curriculum System Design of Enterprise E-Learning with Digital Learning Concept
Authors: Yang Wen Yang , Zhang Liu Mei
Published: November 2013

E-Learning facilitats enterprise human resource management. Therefore enterprises must attach importance to build their own E - Learning platform in such information society. This paper first analyzes the meaning of enterprise digital learning. Then fusion and trends of digital learning and knowledge management is discussed from the perspective of theory level. Key problems are discussed towards the construction of digital learning system for the enterprise. Including the basic components and building process of digital learning system of the enterprise. The design process of digital curriculum system for PetroChina Changqing oilfield company have been collected and analyzed. The Result Show That E - Learning system can improve the level of corporate profits, lean enterprise management and improve the market strain capacity of the enterprise.
The Payment Solutions for Campus Card Based on Improved SET Protocol
Authors: Wu Cui Hong , Wang An Bao
Published: November 2013

Currently, the campus card technology has docked with most departments of school, but all campus card payments are contact-based consumptions, in order to adapt to the future development, the solution is proposed that the SET protocol improved was applied to the campus card.
Design on Safety Monitoring System of Oilcan during Transportation
Authors: Wang Tao , Chen Ming , Zhang Zhen , Xu Yang
Published: November 2013

Petroleum products in oilcans are volatile, inflammable and explosive, which may lead to explosion of oil tank and collapse of building in case of fire. Reasonable design of oil tank and study of oil tank fire extinguishing introducing new method are very important to property safety and social stability. This paper intends to design a safety monitoring system of oilcan during transportation. Vehicle safety monitoring is studied and we analyze and summarize the many factors that affect vehicle safety, and practicality of extracting a representative vehicle safety monitoring technology, analytics implementations.
Design of Maize Production and Management Monitoring and Control System Based on Wireless Sensing Data
Authors: Li Shi Juan , Zhu Ye Ping
Published: November 2013

The low water and nitrogen utilization rates and environmental pollution as a result of the excessive irrigation and fertilization had been paid more and more attention. Adopting the simulation model based on physiological processes to study the optimization method and control technology of agricultural production and management is important to water-saving, rational fertilization and healthy environment. The maize (Zea mays L) is taken as material to explore the integration method of crop simulation with wireless sensing data. First the time scale and temporal scale of wireless sensing data will be unified with simulation step of crop model when the parameters are used as model inputs. Then the relationship between nitrogen balance and soil moisture will be analyze to construct maize production and management monitoring and control system based on wireless sensing data. The system can not only simulate the real-time and dynamic maize growth and development, but also provide the irrigation and fertilization schedule to distribute the annual natural resources depend on the users production goal. The expected forecast results will offer theoretical basis and technological support for intelligent control, water and fertilizer utilization, and management of agricultural production departments.
Hot Water Billing System Based on Smart IC Card
Authors: Qin Ye Mei , Li Qiang , Zhu Xun , Jiang De Sheng , Peng Rui Feng , Wang Chao
Published: November 2013

To overcome the deficiency of the existing billing modes of hot water system, such as based on time or flow signal alone, in this paper a billing method which integrates several signals is presented. The detected flow, temperature and time signals are synthesized to determine the billing function of hot water. Due to the different seasons and regions, an adjustment factor is designed to make the billing function more flexible and intelligent. This may make users’ expenses reasonable, and it also considers the loss of the managers. This proposed billing mode is successfully implemented in the hardware system controlled by Single-chip Microcomputer.
The Research and Application of Power Grid Transmission Interface Dynamic Capacity-Increase Technology
Authors: Guo Xiang Fu , Huang Xin Bo , Wan Di Ming , Guo Zhi Min , Liu Lei
Published: November 2013

The real-time capacity-increase technology of transmission lines is adopted to increase transmission current capacity of transmission lines, by which the conductor temperature, the ambient temperature and the wind speed can be timely measured and the transmission current capacity can be adjusted dynamically without breach of available rules. A new type of Morgan's transmission line dynamic capacity-increase model is established, which can fast and effective computing the current line transmission capacity, and the transient running formula of transmission lines is established, the mathematical relationship between the conductor allowable temperature and the variety of sag of the span is presented, and the application of the monitoring device is introduced, it has important significance to research the power grid transmission interface dynamic capacity-increase technology.
Research on Cerebellar Contributions to Speech Acquisition and Production Based on DIVA Model
Authors: Wu Yuan Yuan , Zhang Shao Bai
Published: November 2013

DIVA (Directions Into Velocities of Articulators) is a mathematical model of the processes behind speech acquisition and production, supposed to achieve a functional representation of areas in the brain that are involved in speech production and speech perception. Owing to its especial structure and roles, introducing cerebellum control modules into the model plays a significant role in improving the mechanism of speech acquisition and production based on DIVA model. To solve this problem, the paper studies its learning process, and explores cerebellar contributions to the model, that is feedforward learning, sensory predictions, feedback command production and the timing of delays, and then adds the corresponding cerebellum modules into the feedback control subsystem on the basis of the current model. Simulation results show that the improved DIVA model can produce more clear and explicit speech sounds, and is more close to human-like pronunciation system.
User Plane for VOLTE
Authors: Xiao Zhe Yun
Published: November 2013

We study the LTE system from user plane perspective, considering the challenges of delay, jitter and packet drop which influence the quality of VoIP. Whats more, in order to implement HD voice in VoLTE, system applies AMR-WB. Additionally, provide suggestion how to combine the metrics in control plane with the user plane for VOLTE performance analysis and trouble shooting.
The Research on Multi-Criteria Fusion Strategy of Non-Effectively Grounded System Single-Phase-to-Ground Fault Based on the Fuzzy Theory
Authors: Wang Rui Xiao , Liu Zhi Yu , Wang Xin Ming
Published: November 2013

The current of single-phase grounding fault in NUGS is very small, so correctly detecting earthing fault line is hard to achieve on the system with insulated neutral point. The existing different grounding fault line selecting methods have some limitations and shortcomings and lack credibility. In order to solve the problem, in the paper comprehensively various methods method of each fault detection in small current grounding system based on information fusion and intelligent process is proposed , and select fault line many times, achieve the desired effect of fault locating. A multi-criteria fault line selecting method is presented by using information fusion and intelligent process is proposed. A fuzzy comprehensive evaluation is given. The simulation results show the proposed method of fuzzy data fusion from multiple line selecting has higher credibility.
The Research and Exploration of Impurity Removal by Laser Sensor in Tobacco Production
Authors: Li Zhe Kun , Li Hong Yun , Zou Yu Sheng , Wu Ming Yi , Liu Ge Yi
Published: November 2013

This paper introduces the structure of the laser devices for tobacco impurity, the principle of separation and sorting performance. It mainly consists of a scanning device, a remote control system, finger grooves vibration slots, debris output vibration slots, a closed-loop cooling device, air clean unit and other components. The principle of separation is based on that 12 lasers scan material in 2000 times/second and then the impurity is changed its trajectory by compressed air blowing and falls to the reject slot, the remaining materials along the normal track go into acceptance slot. The sorting performance of laser removing impurities reaches ≥ 99.5%.
Research Summary of Dispatching System Based on Multi-Agent Technology
Authors: Yu Kai Ji , Yang Zhong Li , Yang You
Published: November 2013

The demerits and current demand of the traditional decision support system (DSS) for power dispatching are analyzed,and the advantages of incorporating the agent technology and the intelligent decision support system (IDSS) are expatiated in detail. A new intelligent decision system model is put forward consequently and the models framework is also given. An example of the integration of three existed expert systems for power system dispatching management into one MAS is given,and the cooperation activities between the agents are described.
The Application of Multiple Classifier System for Environmental Audio Classification
Authors: Zhang Yan , Lv Dan Jv , Wang Hong Song
Published: November 2013

Multiple classifier system trains different classifiers and combines their predictions to improve the accuracy of classification. This paper explains the popular algorithms and strategies in multiple classifier system, and points out the key factors to affect the performance of the application of multiple classifier system. The experiments are carried out on given environmental audio data in order to compare the singular classifier methods with multiple classifier system such as Random Forest and MCS, as well as Bagging and AdaBoost. The experimental results show that the multiple classifiers technology outperforms the singular classifier and obtains better performance in environmental audio data classification. It provides an effective way to guarantee the performance and generalization of classification.
An Adaptive Growing Self-Organizing Tree Map for Brain MR Image Segmentation
Authors: Zhang Jing Dan , Jiang Wu Han , Du Jun , Wang Rui Chun
Published: November 2013

Segmentation of brain tissues from magnetic resonance (MR) images plays a crucial role in medical image processing. In this paper, we propose an automatic unsupervised segmentation method integrating wavelet transform with self-organizing map for brain MR image. Firstly, a multi-dimensional feature vector is constructed based on the intensity, the low-frequency subband of wavelet transform and spatial position information. Then, an adaptive growing self-organizing tree map (AGSOTM) is presented, which adaptively captures the complicated spatial layout of the individual tissues, and overcomes the problem of overlapping grey-scale intensities for different tissues. The proposed method is validated by extensive experiments using both simulated and real T1-weighted MR images, and compared with other algorithms.
2D-3D Medical Image Registration Based on Ant Colony Algorithm
Authors: Wei Wei , Lin Wei , Liu Liang , Hu Zhong Qin
Published: November 2013

Object: To optimize the rigidity registration algorithm between X-ray fluoroscopy and CT, and improve the accuracy of registration. Method: By changing the transmission parameters of the ray tracing, it can obtain the original DRR images and the float DRR image for registration. In trials, it uses ant colony algorithm as the optimized search strategy and Mutual information as the similarity measure. Result: ant colony algorithm and the improved ant colony algorithm compared to the classic Powell algorithm to improve the accuracy of registration about 10% and 20%, achieved good results. Conclusion: Ant Colony Algorithm as optimization search strategy can effectively solve the local minima problem in 2D-3D medical image registration, and further improve the accuracy of registration.
Image Watermarking Technology Based on Lifting Wavelet and Fuzzy Cluster
Authors: Qi Yan , Wang Xing Qiao
Published: November 2013

A self-adaptive blind watermarking algorithm based on transform domain was proposed by combining lifting wavelet transform with fuzzy cluster analysis. Lifting wavelet transform were used to obtain the low frequency subgraph efficiently. In low frequency subgraph, FCM and HVS were combined to divide the texture region for embedding watermark. And the watermark image was encrypted by chaotic map. Contrastive attacking experiments show that this algorithm has preferable transparency and robustness, and can resist various types of attacks effectively.
Simulation of the Mechanism of Insect Bionic Compound Eye Super-Resolution Restoration Technology of Copper Strip Surface Defect Images
Authors: Sun Xiao Dan , Fan Xin Nan , Ling Ming Qiang , Zhuang Hong Hai , Zhang Zhuo , Li Min , Zhang Xue Wu
Published: November 2013

In view of the problem that in traditional copper strip surface defect inspection process, the low resolution of the collected images will greatly decrease the accuracy of the detect defects, through the study of biological bionic imaging technology, combined with insect bionic compound eye imaging technology, this paper proposes a visual simulation insects bionic mechanism of the copper strip surface defect image super-resolution reconstruction technique. Through the study of biological bionic imaging technology, and take the advantage of insect compound eye visual imaging mechanism, this paper uses multiple linear array CCD image sensors to collect images aimed at getting defect images in all perspectives. The actual input images are restored by the method of super-resolution reconstruction using the sample library to improve the resolution of the image. Through the large amount of experiments of different copper strip surface defect images, and then compare the results, it can be seen that taking this papers method to dispose the defect images, will improve the images PSNR value, and has greatly improved the images quality, which will do good to improve the accuracy of the copper strip surface defect detection.
Dimensionality Reduction Based on Feature Points of Underwater Image Mosaic Algorithm
Authors: Zhuang Hong Hai , Liu Guo Gao , Zhang Xue Wu , Zhang Zhuo , Li Min , Fan Xin Nan
Published: November 2013

Image mosaic is a wide perspective to create high resolution for image processing, computer graphics and new field of interdisciplinary research. According to the fact that the real-time performance of Harris feature mosaic algorithm is poor, this paper proposes an improved Harris algorithm based on feature point mosaic of principal component analysis to reduce the dimensionality of the feature points. The algorithm constructs feature descriptors with the feature points, and then uses PCA to reduce the dimension of feature vector descriptor to improve the real-time of the algorithm. Experimental results show that the algorithm can realize the underwater image mosaic and improve the real-time performance of the algorithm.
Graphical Modeling of a Component-Based Software Architecture for Distributed Real-Time Systems
Authors: Liu Xiao Yan , Fu Xiao Dong
Published: November 2013

Present a graphical modeling design methodology of component-based software architecture for distributed real-time system. First of all, definitions of real-time application component model, types of component element that are used for describing software architecture, and types of collaboration relationship between components are introduced in a graphical design environment. Secondly a graphical modeling design method of software architecture for distributed real-time system is described. Finally, the graphical modeling method based on components defined is illustrated via an example.
Solving Multi-Center Dynamic Optimization Problems Using Modified Differential Evolution
Authors: Liu Xing Bao , Yin Jian Ping
Published: November 2013

A novel self-learning differential evolution is proposed to solve multi-center optimization under dynamic environments. The approach of Re-evaluating is used to monitor environmental changes, then historial best individual obtained the environment guides population to new environment. What's more, the self-learning mechanism is employed to reduce the impact of dynamic changes of environment.The experimental results on a set of 4 test dynamic functions show that, self-learning differential algorithm outperforms other algorithms in term of the convergence speed.
A Retrieval Method of Ancient Chinese Character Images
Authors: Tian Xue Dong , Jia Xue Sha , Yang Fang , Li Xin Fu , Miao Xiu Fen
Published: November 2013

Global and local image retrieval of ancient Chinese characters is a helpful means for character research work. Because of the characteristics of ancient Chinese characters such as complex structures and variant shapes, there exist many theoretical and technical problems in feature extraction, clustering and retrieval of these images. A retrieval method was established with the strategy of “clustering before matching” for the ancient Chinese character images by integrating the structural features of them. Firstly, preprocessed character image area was divided into elastic meshes and the directional elements were extracted to form the feature vectors. Then, K-means algorithm was employed to cluster the character images within global and local areas. Finally, the similar images within selected areas were searched in corresponding cluster and the obtained images were provided to users. The experimental results show that this method is helpful for the improvement of the efficiency of ancient Chinese character study.
Simulation of a Nonlinear System
Authors: Shi Chang Guang , Zhao Bao Zhu
Published: November 2013

A nonlinear system described by Mkdv equation is studied. Based on software Mathematica, the solutions of such complex nonlinear system are visualized. The characteristics of such solutions and the relationship between their velocity and shape are exhibited. Especially, the simulations of the collisions of two solitary waves are shown and analyzed.
A Community Detection Algorithm Based on Node Degree Difference and Node Similarity
Authors: Cheng Jian Jun , Wang Peng Fei , Zhang Qi Bin , Zhang Zheng Quan , Leng Ming Wei , Xu Hong , Chen Xiao Yun
Published: November 2013

This paper proposes an algorithm called DDSCDA, which is based on the concepts of the node degree difference and the node similarity. In the algorithm, we iteratively extract the node from the network with larger degree and certified the node as a kernel node, then take the kernel node as the founder or initiator of a community to attract its neighbors to join in that community; by doing so, we obtain a partition corresponding to a coarse-grained community structure of the network. Finally taken the coarse-grained community as a starting point, we use the strategy of LPA to propagate labels through the network further. At the end of the algorithm, we obtain the final community structure. We compared the performance with classical community detection algorithms such as LPA, LPAm, FastQ, etc., the experimental results have manifested that our proposal is a feasible algorithm, can extract higher quality communities from the network, and outperforms the previous algorithms significantly.
The Software Design of Remote Monitoring System of High-Speed Rice Transplanter Operating Parameters
Authors: Xiong Zhong Gang , He Juan , Luo Su Lian
Published: November 2013

In order to get the working reference parameter of agricultural machine in real time, a suit of remote monitorsystem software of the high-speed rice transplanter’s working parameter based on VisualBasic6.0 was raised in this paper. When VisualBasic 6.0 program language was taken in the development of the monitor software, the GSM net of the China Mobile Company would be taken in system data remote transmitting and SerialPort controller would be taken in the serial communication, the data between the PC and GSM module happened.
The Automatic Detection System Development of Aluminum Production Line Quality
Authors: Li Guang Yu , Hou Liang
Published: November 2013

Aluminum electrolytic capacitors in the production process, in order to ensure product quality, reduce consumption, should happen quickly detect aluminum surface quality of this paper, digital image processing technology as the core, collecting images in different directions on the computer using a variety of assistance and recognition algorithm to achieve the automatic detection of defects in aluminum. The system will greatly improve production efficiency, reduce labor intensity and improve the working environment of the scene.