bluuebunny/crossref_metadata_2025 huggingface dataset:
The Research of Embedded Techniques in Control Systems of Service Robots
Authors: Hu Lian Jun , Song Hong , Zeng Xiao Hui , Li Wei
Published: March 2011

A control system for service robots based on a 32-bit ARM processor with kernel S3C2410 is proposed. The entire structure of the control system of embedded service robots is designed in the paper. And designs of each circuit and software of the system are demonstrated respectively in detail. The control system proposed has advantages of modularized structure, small size, low power dissipation, hard real-time and high reliability, etc.
A Novel CNC Interpolation Algorithm for Saddle Curve
Authors: Li Hua Tao , Tian Xin Cheng
Published: March 2011

This paper presents an efficient and accurate direct interpolation algorithm for saddle curve formed by intersection of two tubes, an important manufacturing problem in automated welding/cutting field. The algorithm is able to directly interpolate the saddle curve with non-Cartesian configuration. Simulation of the saddle curve interpolation algorithm has been carried out on the Matlab platform. The results demonstrate that interpolation error is well within the accuracy requirements of typical machining. It also shows that the trajectory control program based on the algorithm can work with high efficiency.
Reflecting on Native Culture Involvement in Current College English Textbooks
Authors: Wu Chun Mei
Published: March 2011

Nowadays, most of the Chinese college students acquire more about target language culture than their native culture. Judging from the present distinctive sets of college English textbooks, there exists one common problem: Chinese culture is seldom involved in the textbooks. The textbook is viewed as the very crucial means to cultivate learners’ intercultural communicative competence(ICC). The overwhelming majority of textbook editors attach more importance to the target language culture, neglecting Chinese culture , which results in students’ being poor in ICC. As a successful communicator, proficiency in both the target language and the native language are required of college students.Based on the findings of a survey and a questionnaire, the author proposes some suggestions on textbook reforms with the purpose of promoting students’ ICC.
An SEU Hardened FIR Filter Based on Triple Modular Redundancy
Authors: Yang Wen Hui , Wang Jing , Huang Lian Fen
Published: March 2011

The finite impulse response (FIR) filters in the space radiation environment probably face the single event upset (SEU), making unexpected results. To avoid that situation, the traditional triple module redundancy (TMR) technology is usually applied. At the same time, however, it brings high cost of area and power. For this reason, an improved TMR (ITMR) structure for FIR filters is proposed in this paper. Simulation shows that the design can achieve the same performance with much less resources. Based on traditional technique TMR, the design reports an improved TMR (ITMR) structure by simplify the two redundancy modules, the advantage that it has the same performance but costs less resources can be reflect by the simulation and synthesis clearly.
A Novel Trajectory Control Algorithm for Intersection Seam Automated Welding
Authors: Yi Xing Lin , Tian Xin Cheng
Published: March 2011

A saddle-shaped curve is formed by intersection of two tubes. This paper proposes a new saddle curve interpolation algorithm for automated welding system with non-Cartesian coordinate system. The trajectory interpolation of saddle-shaped curve is usually carried out through approximating the curve as segments of straight line/circular arc for intersection seam automated CNC welding. Simulation of the direct interpolation algorithm is carried out to testify its effectiveness and superiority. With this algorithm, it is demonstrated that the chord error is within the allowable limits and the algorithm has high reliability.
An Expert Controller Based on Transient Response Patterns
Authors: Zhang Ning , Liu Rong Hua
Published: March 2011

An expert control system based on transient response patterns and expert system techniques is proposed in this paper. Depending on the features of the closed-loop control system determines the control decision and adjusts the parameters of the controller. The proposed method requires minimal proper information about the controlled plant and, with the linear re-excitation learning method, the system is kept satisfying the performance criterion.
Prediction of Cutting Deformation Based on Annealing Neural Network
Authors: Liu Yong , Yu Hong Ming , Jian Wen Xing , Tian Hao
Published: March 2011

Along with the construction of highways in our country, many highways are crossing the mountains. The excavation of those roads will form cuttings, cutting deformation monitoring and forecast provides a good guarantee for road construction safety .This paper used simulated annealing (simulated annealing, SA) algorithm combined with BP neural network algorithm, based on monitoring data, to predict the deformation of cutting and well avoid slow convergence of network training and local minimum. In the same initial conditions, the proposed algorithm based on neural network algorithm has a higher training convergence speed and better prediction accuracy than the traditional BP neural network, is an effective forecasting method.
Research on Flywheel Sets on Electromagnetic Eddy Current Retarder Test-Bed
Authors: Hu Yun Da
Published: March 2011

A test-bed used to test electromagnetic eddy current retarder’s performance was designed. It can evaluate the connection of automobiles speed, excitation current, rotor temperature and brake torsion. Besides, a series of flywheels were designed which can randomly combine and simulate the running state of the automobiles. The design of flywheel is referred in many machines, not for it can solve the problem of stability, but for providing moment of inertia.
Multi-Source Marine Environment Data Sharing Prototype System Framework and Visualization Applying Study Based on Web Service
Authors: Yang Feng , Tao Yong Xia , Du Yun Yan , Xiao Run Lin
Published: March 2011

In order to realize the integration and sharing for multi-source marine data, the paper took the visualization application of the multi-source marine environment data as an example to discuss the realization way of the data’s integration and sharing. By encapsulating the marine environment data and its application model to web services, we constructed a multi-source marine environment data applying platform system framework through internet. The system can shield the data isomerism and the application environment isomerism, and realize the integration and sharing for the multi-source marine environment data. At the same time the distributed structure of the system can raise its flexibility and expansibility. So the establishment of the system proves the feasibility of web service in multi-source ocean environment data’s integration and sharing.
Study on Solid Model Methods and Techniques of AutoCAD
Authors: Zhang Sheng Min , Chu Wan Qiang , Dong Xin Fa
Published: March 2011

The paper introduces some effective methods to solve the problems of solid modeling with the software of AutoCAD. Make good use of views to avoid converting UCS frequently and set up proper layers aimed to the building or structure and draw solid in order to control the display of different parts of solid. According to analysis and research on 3D solid model, the authors also point out other techniques, such as the skills about Boolean Calculation and conclude that different operation sequence produces different result and sometimes don't need to input a data and also complete to cut of solid. These skills are helpful to make solid model.
MATLAB Calculation of Hydraulic Transients in Hydropower Simulation Application
Authors: Lei Heng , Li Ying
Published: March 2011

In hydropower station in the operation of total with hydraulic transient process of the power station on the transition process analysis and calculation is quite important. This paper introduces the today's advanced scientific computing software MATLAB, and using the software of the Zipingpu hydropower station hydraulic transients from the mathematical model and calculation simulation etc is analyzed and calculated with research, in order to seek appropriate power operation mode, unit close regularities. For power station and water system design optimization, safe operation, provides the basis.
Introducing Psychological Factors Paper-Making Enterprises Optimal Scheduling Model
Authors: Li Ming Hui , Meng Xian Kun
Published: March 2011

In the production scheduling model based on the traditional basis, from the multi-multi-objective optimization modeling to genetic algorithm’s optimization, introduces incentive mechanisms and the psychological factors, presents a paper-making enterprise based on genetic algorithm optimization Scheduling model. a simulation study and comparison of algorithms to verify the feasibility of the program and solve the problem of scheduling the order of optimization.
A Hybrid Method Based on PSO and FCM for Transformer Fault Diagnosis Using Dissolved Gas
Authors: Guo Xin Chen , Song Qiong , Zhang Fu Wei
Published: March 2011

The fault diagnosis for power transformer plays an important role in improving the safety and reliability for an electrical network. Dissolved gas analysis (DGA) is a basic method to diagnose the fault of power transformer. Considering the disadvantages in DGA using fuzzy c-means (FCM) clustering algorithm, a hybrid method based on particle swarm optimization (PSO) to solve the FCM model is presented. In the new algorithm, the PSO’s search space is the vector space after straightening the membership matrix in the FCM. With the results of experiments on real DGA data, it shows our approach can improve the clustering performance for the transformer fault diagnosis.
Measurement-Based Research on User Behavior of P2P VoD System
Authors: Zheng Yi , Chen Chang Jia
Published: March 2011

Nowadays, as the amount of video and population in VoD system keeping fast growth, service provider often use p2p mechanism to alleviate their server load. The user under p2p mechanism is not only resource consumer but also resource provider. Therefore, system performance is mainly determined by user watching and sharing behavior. In this paper, after analyzing a large amount of data, we present some valuable results on user behavior. Those studies are believed can possess guiding significance for analyzing system performance and design new pre-fetch strategy.
Generating Real-Time Responsive Balance Recovery Animation
Authors: Ma Rong Fei
Published: March 2011

We propose a novel Biomechanics-based Responsive Balance Recovery (BRBR) technique for synthesizing realistic balance recovery animations. First, our BRBR technique is based on a simplified human biomechanical model of keeping balance, so as to interactively respond to contact forces in the environment. Then, we employ the Principal Component Analysis (PCA) to reduce the dimensions of the mocap (motion capture) database to ensure the search for the most qualified return-to segment in real-time. Finally, empirical results from three cases validate the approach.
Offset Line Method-Based Study on Visualization of Steep Terrains on Loess Plateau in Shanxi Province
Authors: Zhao Wei Dong , Qian Jia Zhong , Zhou Chun Yin
Published: March 2011

In order to realize the 3D visualization of steep terrains like level terraces, a new Offset Line Method (OLM) -based visual method is put forth in this paper. The constrained feature lines and their Bottom Offset Cliff Lines (BOCLs) are collected and considered while building DEM. Therefore, the steep terrains like level terraces with steep steps can be visualized well. Our case study shows that the steep terrains can be visualized well if the constrained feature lines and their BOCLs were considered according to the principles of OLM while building Triangulated Irregular Networks (TINs) or grid-based DEM. how to determine the optimal value of ∆d needs further study in the future.
Conceptual Design of a Coke Dry Quenching Gasification Technology
Authors: Sun Lan Yi , Liu Yong Duo , Zhou Hui , Li Qing Song
Published: March 2011

In this paper, a coke dry quenching gasification (CDQG) technology using coke oven gas (COG) and steam to quench the incandescent coke is proposed. The distinct advantages of this technology include energy conservation, pollution reduction, and improvement of coke quality and full use of resources. Based on Gibbs free energy minimization principle, the flow rate and composition of the syngas could be calculated. At the same time, the impact of the flow rate of the COG on the flow rate and composition of the syngas and the exergy efficiency are analyzed. Finally, the flow rate of the COG is prudently chosen to make thermodynamic analysis of the process.
Sensitivity Analysis of an Energy-Efficient Heat Coupled Distillation Column
Authors: Sun Lan Yi , Li Jun , Liu Xue Nuan , Li Qing Song
Published: March 2011

In this paper, an energy-efficient heat coupled distillation column (HCDC) which is industrially viable is constructed for propylene–propane mixture separation and the sensitivity analysis was performed. Some comparative studies are made with conventional distillation column (CC) and a column with a vapor recompression system (VRC). The results show that the thermal efficiency of the HCDC appears to be strongly sensitive to the compression ratio between rectification section and stripping section.
Study of Reinforcing Mechanism of Rigid-Frame Arch Bridge Based on Static and Dynamic Analysis
Authors: Yang Ze Ying , Zhang Xi Bin , Qu Jian Bo
Published: March 2011

According to Dawenkou bridge, a seriously deteriorated rigid-frame arch bridge, typical deteriorations of rigid-frame arch bridges were summarized. Based on 3-dimensional finite element model of a rigid-frame arch bridge, the relationship between dynamic properties and deteriorations of the structure, especially the influence of lateral tie system on the dynamic properties of the structure was analyzed. The results show that, damages of lateral tie system in operation induced premature appearance of lateral vibration directly; however, the large curvature torsion of deck obviously should take the mainly responsibility of damages of lateral tie system. According to the above analysis, the corresponding reinforcement scheme and specific measures were proposed.
Strengthening Method of T-Beam Bridge and Effectiveness Evaluation
Authors: Yang Ze Ying , Zhang Xu Yi , Yu Hui Bin
Published: March 2011

In this paper, the typical deterioration of Northern Approach of Binzhou Yellow River Bridge is reviewed and the method of strengthening is proposed. Based on the theory of grillage method, T-beam grillage is modeled using finite element analysis software Midas civil to study the dynamic behavior of North approach’s superstructure after strengthening. Concerns about integrity of the carrying capacity and overall safety of the bridge are raised. Load simulation tests were performed to evaluate the effectiveness of the method and investigate its effect on structural behavior. And the results indicated that the bridge after strengthening could meet the demanding of intensity and rigidity.
A Study of Binary Minimum-Energy Shortly Supported Wavelet Frames Associated with a Scaling Function
Authors: Chen Qing Jiang , Hu Gai
Published: March 2011

Frames have become the focus of active research field, both in theory and in applications. In the article, the binary minimum-energy wavelet frames and frame multiresolution resolution are introduced. A precise existence criterion for minimum-energy frames in terms of an ineqity conditi- -on on the Laurent poly-nomial symbols of the filter functions is provided. An explicit formula for designing minimum-energy frames is also established. The sufficient condition for the existence of affine pseudoframes is obtained by virtue of a generalized multiresolution analysis. The pyramid de -composition scheme is established based on such a generalized multiresolution structure.
Lyapunov-Based Sufficient Conditions for Nonlinear Impulsive Systems
Authors: Gao Yong Liang , Mu Xiao Wu
Published: March 2011

This paper focuses on the stability analysis and invariant set stability theorems for nonlinear impulsive systems. A set of Lyapunov-based sufficient conditions are established for these convergent properties. These results do not require the Lyapunov function to be positive definite. Inequalities relating the righthandside of the differential equation and the Lyapunov function derivative are involved for these results. These inequalities make it possible to deduce properties of the functions and thus leads to sufficient conditions for convergence and stability.
Stability of Primal-Dual Algorithm with Communication Delay for Congestion Control
Authors: Liu Chang Hua , Yuan Cao
Published: March 2011

Stability is a crucial issue for transport protocols. A lot of works study how to tune the parameters of congestion control algorithms to keep the stability of networks. This paper uses the idea of re-engineering to design an adaptive-stability congestion control algorithms base on the optimization theories. Furthermore, we present one congestion control algorithm according to different stable conditions. The effectiveness of these stability criteria is validated by simulation results．
Optimization Size of Tailwater Recovery System in Wetland Paddy Field
Authors: Chang Yu Chuan , Kan Chun E
Published: March 2011

In this study, a tailwater recovery system in paddy field was simulated in order to supply reuse water to industries. Field experiment and historical data were obtained for a two-tank model parameter estimation and verification. The simulation results showed that the optimization tailwater recovery system corresponding to the area of 6,036 ha in the first crop season and 1,994 ha in the second crop season in the paddy field. The volumes of the tailwater and reuse water are 18.74 × 106 and 15.52 × 106 t, respectively which can supplement 86,000 ton per day to satisfy the water requirement of industrial park with farm pond. However, an increase in the height of field’s bunds, active capacity of pond, and scale of purification unit will aid in the development of tailwater recovery system around paddy fields.
Driving Forces of Landscape Change at the Upriver of Minjiang, China
Authors: Zhao Yong Hua , Wang Xiao Feng
Published: March 2011

Research into landscape change was one of two major fields of interdisciplinary research into the human dimensions of environmental change, the other being the approach of socio-economic metabolism; the causes of which were complicated and comprehensive. Based on the household level interview, analyzing the causes of change by the multifactor was a good method. We applied the household level interview data to analyze the causes of landscape cover change at the upper reach of Minjiang, China. The causes of landscape change at the upper reach of Minjiang included agriculture, wood, infrastructure, economy, technology, policy & institution, demography and culture variables, etc. The results showed that the primary causes of landscape change at the upper reach of Minjiang were the correlative country policies (such as the Great Leap Forward, the Deforestation, the Institutional Revolution, the Planned Parenthood, the Open-up, the Natural Forest Conservation Program) and triggered event (such as the three years’ natural disaster) at the large scale, however, at the small scale such as at the village level, the principal cause of which was different, and there were the interplay among different factors. So we thought that the landscape cover change was the result of multifactor interplay at the upper reach of Minjiang, China.
The Risk Element Transmission Model of Power Restoration Based on Dynamic Improved Ant Colony Algorithm
Authors: Huang Min , Li Cun Bin
Published: March 2011

In order to restore power supply of a complex distribution network in the most economical way, proposed a dynamic improved ant colony algorithm. It’s used to select the path of supply restoration. Improved the original pheromone update mechanism of ant colony algorithm and update the increment of pheromone dynamically. It not only takes into account the inherent loss in the chosen route for power restoration, but also considers the economic losses in every region caused by time delay. This algorithm can find approximate extreme solutions quickly and avoid trapping in local minima. It can minimum the total economic loss of the electric interruption, and provide a reliable basis for the economic decision-making of the power recovery.
Azimuth Axis Servo System Integrated Control Based on Sliding-Mode Control
Authors: Wang Shu Fang , Zhang Jian Cheng , Guo Hong Hong
Published: March 2011

On the basis of LuGer friction model, an integrated sliding-mode control strategy is proposed to deal with servo system nonlinear and uncertain factors effectively. The control strategy includes two parts. One is nominal model without considering disturb and uncertain, the other is real model including disturb and uncertain. To one part, choose reasonable sliding surface and design controller law. To another part, PTSC algorithm and NNC algorithm combines together to optimize RBF neural network in order to acquire upper bound of uncertain. Simulation and experiment results show that proposed control strategy better servo system performance.
Summary on Mechanism of Oil Flow Electrification in Power Transformers
Authors: Fu Qiang , Xie Xue Jun , Zou Pin Guo , Li Zhi , Qian Yi Hua
Published: March 2011

The mechanism of oil flow electrification in transformers was described in this paper. The mechanism of oil flow electrification in transformers could be understood from the effect of the oil flow’s movement and the electromotive action of AC electric field. The electric polarity of oil flow and the insulating layer were mainly depended on the state of charged cations and anions in oil, while the surface characteristics of solid materials only played a supporting adsorption role.
A New Model for Web Service Composition
Authors: Hao Long
Published: March 2011

To support automated Web service composition, it is compelling to provide a template, or model that dictates the ways in which services can be composed. In this paper, a novel composition model based on the relative vector is proposed, where individual services, composite services, and user objectives are described with the relative vectors, through a series of operators defined on the relative vector, available composite services can be found, and how much they meet user objectives can be evaluated. A significant advantage of our approach is that many existing optimization methods can be used to search optimized compositions, where parallel or choice structure is enabled, individual service with multiple input or output parameters is allowed.
Application of Multi-Dimensional Analysis Technology in Telecom Industry
Authors: Chen Li Yong , Yin Xiu Ye
Published: March 2011

With the rapid development of China's telecom industry, the management of domestic enterprises are constantly changing. Operate method was closed to internationalization constantly. In this process, the technology of OLAP plays a very vital role for the development of enterprises. China's telecom industry should depend on the technology of OLAP to get an efficient decision support system to make an accurate in time efficient decision if they want to survive in the world keen competition, and then leading enterprises moving in the right direction. This paper introduced Multi-dimensional analysis technology, Illustrates the application of drilling and rotation Combined with concrete examples. Hope to provide some help for the development of enterprises, promote the rapid development of China's telecom industry through this paper.
Solving the Degree-Constrained Euclidean Steiner Minimal Tree Problem
Authors: Dong Shu Juan
Published: March 2011

The degree-constrained Euclidean Steiner minimal tree problem was discussed based on the Euclidean Steiner minimal tree with each original point being added with a degree constraint. The property of the problem was analyzed and the implementation process of solving the problem by using the simulated annealing algorithm and the ant algorithm was presented. Both algorithms are coded in Delphi and run on the Windows XP environment. Series of numerical examples were tested and the efficiency of these algorithms was validated.
Self-Embedding Watermark for Image Restoration Based on Repeat Correcting Code
Authors: Xia Xue Wen , Xiong Zeng Gang , Li Zhi Ming
Published: March 2011

A simple image restoration scheme based on watermark is proposed in this paper. In the watermark scheme, an image is divided into multi-blocks. Repeat correcting code is adopted to be a copy of the most significant bits (MSBs) which will be selected as watermark that embedded into the least significant bits (LSBs). There are two shares of MSBs and scattered in the LSBs within other blocks. In order to avoid tampering coincidence and to improve the ability of restoration, the distance among the original block and other two blocks that their shares belong to is optimized as long as possible. The experiments indicate that this scheme is simple and easy to implement and the smaller the tampered area, the more pixels in the tampered area can be recovered correctly.
A Design and Implementation of Comprehensive MPEG-2 Transport Stream Analysis System for Large-Scale TV Station
Authors: Li Rui Min , Sun Gao Fei
Published: March 2011

MPEG2 technology of Digital Video Broadcasting system has large difference than before, but their detection requirements are basically the same. Based on network detection, MPEG three-level alarm, screen layer alarm, demonstrates much channels, large-scale stream analysis, the mutual influence between the channel, and relationship between the stream. Through designed and compiled a test software, had get the results which verified previous analysis.Experiments have proved that this system is suitable for the provincial TV stream detection and network design and analysis.
A New Method for Finding Solutions of Linear Partial Differential Equation
Authors: Tang Yan , Qin Mao Chang
Published: March 2011

A useful technique is adopted to study special solutions of a general Black and Scholes equation in this letter. Several kinds of new special solutions are obtained. This method is effective for finding special solutions of linear differential equation with variable coefficient.
Finite Element Analysis of Steel Liner in the Gradual Change Segment of Downstream Dam Surface Penstock
Authors: Bai Xin Li , Pan Qian , Su Hai Li
Published: March 2011

Taking dam body and steel liner in the gradual change segment of inlet of a hydropower station as the research target, structure analysis is carried out by use of the large finite element software. Temperature variation load and external pressure load equivalent to internal vacuum 0.2MPa pressure are considered. Stress and distribution of the dam, steel liner and the stiffener rings are obtained. The calculation results show that, steel liner structure in the gradual change segment has sufficient rigidity; the stress state of steel liner structure is very complex and the stress concentration in stiffener rings is significant; the stress value in sharp-angled area of stiffener ring structure is also very high. Anchor reinforcement with radial constraints and transverse stiffeners are suggested to add to the steel liner, so as to improve the force bearing conditions of steel liner structure in the gradual change segment of inlet. The obtained results and conclusions can be referenced for the design of steel liner structure in the gradual change segment of inlet.
Hydrodynamic and Mass Transfer Performance of Enhanced Jet Tray
Authors: Li Jun , Sun Lan Yi , Ma Zhan Hua , Xue Sha , Hu Yang Dong
Published: March 2011

In order to satisfy the revamping of refinery and chemical equipments, a new kind of tray, enhanced jet tray (EJT), was presented. The hydrodynamic and mass transfer performances of EJT and new vertical sieve tray (New VST) were investigated with air-water-oxygen system in a stainless steel column of 1200mm internal diameter. Correlations of hydrodynamic parameters such as pressure drop, weeping and entrainment of EJT were obtained. The experimental results show that EJT has lower pressure drop, fractional weeping, entrainment and higher efficiency compared with New VST because of its special geometry characteristics.
Development and Application of CAPP System Used for Large Forgings
Authors: Zhao Xin , Zhao Hong , Zhang Rui
Published: March 2011

To improve the efficiency of process planning, an CAPP system is developed according to the complexity and particularity of process design for large forgings,. The feature functions of the system are analyzed. The key techniques are discussed. The application results show that the process plans of about 70% large forgings are designed by the system and the efficiency of process planning is improved 4-8 times.
Study of Statistical Process Control for Multi Specification and Small Batch Production Based on Group Technology
Authors: He Fa Jiang , Wang Ming Hong , Wang Yue
Published: March 2011

For the multi specification and small batch productions, because of small batch and short manufacture cycle of product, it is difficulty to get enough sample data used for setup control chart to Statistical Process Control (SPC) of manufacture process quality by traditional SPC method. A new part code system based on OPTIZ code system is proposed by coding parts, manufacturing processes and qualities according to Group Technology (GT) based on similarity theory, so characteristics of parts, manufacturing processes and qualities are transformed to code, analyzed and judged by similarity theory to enlarge sample data, to realize SPC by control chart method. A SPC program for multi specification and small batch production based on group technology is developed by Visual Basic software and verified by actual example.
The Research and Implementation of Electrostatic Detonating Gas Simulation Experiment System Controller Based on Nios II
Authors: Dong Xiu Jie , Ma Sheng Jie , Sun Qi Xiao , Zhang Liang
Published: March 2011

The electrostatic discharge detonating gas simulation experiment system based on Nios II is developed in this paper.This system uses flexible and highly efficient SOPC technology,which embeds many functional modules.The system can simulate the mine gas environment, measure the oxygen, temperature and the gas concentration that most likely detonating gas, and real-time display in the LED screen, so as to obtain important data of gas explosion in coal environmental, which provide theoretical and experimental basis for farmulating standards of electrostatic security of human body and the safety of production in coal mine. It can conduct a series of experiments about electrostatic discharge of human body detonating gas mixture.
Research and Development of 20% Nicosulfuron·Atrazine Oil Miscible Flowable Concentrate
Authors: Gao Yang Fan , Zhai Feng Yan , Ye Hui , Zhang Li
Published: March 2011

It was results show that nicosulfuron and Atrazine with the different ratio have the synergized action to plants of the monocotyledon and double seed leaf weed by the indoor bioassay of crabgrass (Digitaria ciliaris) and purslane. When Atrazine: nicosulfuron = 17:3 ratio of compatibility, the co-toxicity coefficient is the largest and showing an enhancement effect of the most significant. The 20% nicosulfuron and Atrazine of Oil Miscible Flowable Concentrate was processed by ultrafine grinding in the wetting emulsifier, dispersant, thickener, solvent, were screened test to decide the best formula. This preparation showed after (0±1)°C low temperature and (54±2)°C thermostble experiment's result the outward appearance not obvious lamination, in the water the dispersivity is good, each target conforms to the Oil-based Suspension related standard.
Soft-Reward Based Reinforcement Learning by Spiking Neural Networks
Authors: Shi Wei Ya
Published: March 2011

In this paper, we propose algorithm based reinforcement learning for spiking neural networks. The algorithm simulates biological adaptability and uses the soft-reward from environment to modulate the synaptic weight, which combines spike-timing-dependent plasticity (STDP), winner-take-all mechanism. The algorithm is tested to classify a number of standard benchmark dataset. The obtained results show the effectiveness of the proposed algorithm.
Quasi-Newton Method for DSPSL Bandpass Filter Design
Authors: Wang Shan
Published: March 2011

A method based on neural-network is developed and applied to analyze the DSPSL filter design. Through the neural network analysis of nonlinear circuits, it can enhance the efficiency of electro-magnetic (EM) analysis techniques for DSPSL filter design. Quasi-Newton method is adopted, which has shorter training period and the faster convergence. A good agreement between ANN results and EM simulations verifies the validity of this proposed MLPNN model.
The SIR Analysis Theory Based on ABCD Matrix and Application for the Filter Design
Authors: Wang Shan
Published: March 2011

SIR (Stepped impedance resonator) for its features in microwave design, it is paid more and more attention. The harmonic and fundamental frequency can control through the impedance ratios of the SIR structure. In theory, SIR can control the locations of any sub-harmonics, which for the miniaturization of microwave devices and the efficiency of spectrum is very useful. In this paper, a method based on ABCD matrix of 2-ports network is proposed to analyze SIR.
The Influence of the Randomness on Average Path Length
Authors: Wang Xin Chun , Jiang Yu Bo
Published: March 2011

The evolving rule includes random attachment and preferential attachment and so on. It forms different network formation by different attachment. In order to analyze this character, this paper put forward an evolving model. It contains two kinds of attachment: some are connected at random, and others are connected based on current structure of the network, and in the model the deleted links are considered. The degree distribution and degree exponent are obtained by mean-field approach. Then it discusses the influence of randomness on the average path length.
Hierarchical and Hybrid Topology P2P Model Based on Chord Protocol and Interest Subnet
Authors: Gao Ming Peng , Xu Ying
Published: March 2011

Structured and unstructured p2p topology model both have their own advantages and disadvantages. According to this issue, hierarchical and hybrid topology p2p mode based on chord protocol and interest subnet is proposed and established, whose upper layer makes use of bilateral search on chord loop and lower layer builds interest subnet where register node records search requests and results and stores popular resource table. It is also important to maintain model. The secondary distribution and networking strategy about new node help it join in interest subnet quickly. And the way of backing up register node and super node make the system’s robustness strong. It is showed by performance evaluation that this model can reduce query delay and improve the efficiency of resource location to some extend.
The Research of Simulation of Transport Process
Authors: Lu Wei
Published: March 2011

This paper researches on a simulation model based on the physical process, which is consisting in modeling and simulation.
Fault Diagnosis of Marine Diesel Engines Based on SOM Neural Network
Authors: Song Qiang , Wang Ai Min
Published: March 2011

SOM neural network is a fully connected array of neurons composed of non-teachers and self-learning network, which has a strong nonlinear mapping ability and flexible network structure and a high degree of fault tolerance and robustness. This paper introduces the structure of SOM neural network and learning algorithm and presents an instance of marine diesel engines in MATLAB environment. The diagnosis of marine diesel engine showed that the model can reduce the cost of diagnosis and increase the efficiency of diagnosis. There will be well application prospect in practice.
An Embedded- Technology-Based Web Server Design of Digital Home
Authors: Yang Xiang , Wang Hui Hong , Pan Wei , Zhang Yuan Yi
Published: March 2011

The development of information technology sped up the pace of the reform in modern family life. People have a higher demand for safety, comfort and efficiency of home environment. The conception about ”Smart Home”, “Digital Earth”, “Digital Comfortable Community”, “Wisdom Earth” are being put forward with the rapid development of the property of digital home microprocessor. The technology of digital home embedded web server will become the bottleneck in the development of the digital home. Therefore, this paper used the ARM9EJ-S processor and Linux operation system, combined with the mature technique of Java and MVC (Model View Controller) and designed a kind of digital home embedded web server. The validity and efficiency of the system was validated via test-experiment. The results show that this system has many advantages, such as small volume, lower power consumption, lower cost, safety and reliability, easy to install and to maintain, good practicality and so on. People can control everything in the home whenever and wherever they are through the Internet.
The Safety and Liveness Properties of Composite E-Services Based on Activity Chain
Authors: Chen Bo , Huang Xiao Mei
Published: March 2011

E-service composition is most impressing method for development and deployment of e-business. Description and modeling the behavior requirements of composite E-services for users and verifying composite E-service compliance to specific requirements is an important step in design of services. But most work does not address the issue of how to model the requirements that the BPEL4WS processes are supposed to satisfy. The specifications in verification works are general temporal relation based on activity or scenario in essence. Distinguish with these work, we propose a novel concept of behavior specification based on activity chain in which granularity is between activity and scenario. Chain existence mode, chain absence mode are designed to express such behavioral requirements based on activity chain that is similar with safety or liveness property based on activity respectively. Encode them on Labeled Transition System LTS and then give them exact operation semantics. Finally, an example is illustrated.
Chaos Analysis and Control of Permanent Magnet Synchronous Motors
Authors: Xue Wei , Guo Yan Ling
Published: March 2011

As a nonlinear dynamic system, the permanent magnet synchronous motor (PMSM) can exhibit prominent chaotic characteristics under some choices of system parameters. The existence of chaotic attractor of the PMSM is verified through the centre manifold theory and Poincaré section. Chaotic phenomenon affects the normal operation of motor. In this paper, it makes the PMSM in a stable state to control chaos of the PMSM with a control strategy of delay feedback, which can eliminate chaos well.
Traffic Flow Detection on Highways in the Intelligent Transportation System
Authors: Yin Guo Fu
Published: March 2011

A traffic flow detection method is brought forward which can adapt to Pan Tilt Zoom camera automatically.Road marks are used to establish the coordinate mapping between image and road in order to realize raffic flow statistic and traffic surveillance.Parameters are updated in time automatically when scene is changed.The system is proved to be intelligent and robust in practiceal applications.
Research and Application of 2D Barcode in Hospital Informatization
Authors: Lu Qing , Lin Jin Zhong , Liang Yan Ping , Liu Zhi Hai
Published: March 2011

Barcode technology is one of the automatic identification technologies that are developed and used very rapidly in recent years. As the application and popularization of wireless communication and mobile device technology, the 2D (two dimensional) barcode technology has been used in preliminary in social production, e-commerce and commercial activities. In this paper, the different applications of 2D barcode in hospital informatization are studied, 2D barcode-based informatization methods are presented, and the tier framework of hospital information system is established. The system structure is divided into three tiers according to the principles of system access and realization. By using the barcode-based informatization method in multiple links of hospital business, the data input efficiency will be greatly improved and the information processing time will be shorten in great deal, so the service level of the hospital is improved.
Visualization Design and Implementation in Virtual Spinal Fixation Surgery System
Authors: Song Hua Zhu , Liu Bo , Zhao Bin
Published: March 2011

This paper proposed the solution of visualization technology in virtual spinal fixation surgery system, which implemented the 2D image display and 3D bone tissue refactoring. It is designed based on Visualization Toolkit and implemented by the improved RayCasting volume rendering algorithm. First, design the uniform interface for 2D and 3D visualization, and then give 2D slicing visualization pipeline and spine 3D refactoring pipeline. In spine 3D refactoring, the system dynamically chose appropriate rendering algorithm to satisfy the real-time requirement of the system interaction based on GPU or CPU computer hardware environment. Meanwhile, provide visualization windows with visualization pipeline adjustment panel to adjust visualization effect conviniently. By 2D slicing data visualization we can transform CT value into 2D grayscale image and display it. The refactoring algorithm of 3D bone tissue refactors CT visualization data into 3D bone model. By defining the resampling coordinates in 3D refactoring window, the system provides re-slicing of axial section view, sagittal section view and coronary section view.
Bounding the Inefficiency of Multiclass Stochastic Traffic Equilibrium under Congestion Pricing
Authors: Yu Xiao Jun
Published: March 2011

There are often some efficiency losses between user equilibrium (UE) and system optimization (SO). This paper investigates the efficiency losses of multiclass stochastic user equilibrium (SUE) traffic assignment under congestioin pricing against SO. Serveral bounds of the efficiency loss for this problem when the tolls are considered as part of the system cost are derived, with the time-based criterion and the monetary-based criterion, respectively. It is shown that the upper bound of efficiency loss caused by the time-based SUE depends on the type of link travel time function, the network complexity, the travel demand, and the degree of users’ perception error on travel cost. The upper bound of efficiency loss caused by the monetary-based SUE depends on the value of time (VOT) of user classes besides the aforementioned factors.
Boundary Feedback Stabilization of a Two-Dimensional Wave Equation
Authors: Guo Chun Li , Xie Cheng Kang , Shen Fei
Published: March 2011

Boundary control of two-dimensional wave equation on the rectangle is considered in this paper. Boundary controllers are designed through backstepping method. Stabilization of the closed system is obtained under the controllers.
Output Prediction Method Based on Model and its Application in Power Systems
Authors: Luo Ke , Lv Hong Li
Published: March 2011

An output prediction method based on state space model is proposed to overcome the poor reliability of the prediction method that does not use system model. The open-loop state observer is established based on the system state space model. Then the output prediction model is built in which the prediction error is used as input and a correction module is also contained. The module is used to correct the prediction error, and then the current predicted output can be obtained by the model from the delayed output. At last, a wide-area damping controller in power systems based on output prediction is designed to verify the effectiveness of the method.
Effect of Surfactants on the Dispersion of Multi-Walled Carbon Nanotubes in Epoxy Resin
Authors: An Ying , He Xue Tao , Yang Wei Min , Ding Yu Mei
Published: March 2011

In order to improve the dispersion homogeneity and stabilization of multi-walled carbon nanotubes (MWNT) in epoxy resin, the effect of different surfactants such as hexadecyl trimethyl ammonium bromide (HTAB), sodium dodecyl sulfate (SDS), oleic acid, Triton X-100 and BYK-9077 on the dispersion of MWNT were investigated. Suspensions of MWNTs/epoxy resin with various surfactants were prepared by ultrasonic agitation. Dispersion homogeneity of MWNT in epoxy resin was evaluated by transmission electron microscopy (TEM), and dispersion stabilization was evaluated by stationary observation. The results show that dispersion properties were not improved by HTAB, while they were improved incoordinately by SDS, oleic acid, Triton X-100 and BYK-9077. Suspensions of MWNTs/epoxy resin with HTAB, SDS, oleic acid and Triton X-100 were all delaminated quickly, it means, dispersion stabilization were not improved by these surfactants. BYK-9077 was the only surfactant which enhanced the dispersion homogeneity and stabilization of MWNTs/epoxy resin significantly. Based on this research, various weight ratios of surfactant BYK-9077 to MWNT were studied. The experimental results show that the dispersion system could reach a balance state when the ratio of surfactant BYK-9077 to MWN was 2.
Pseudo-Plastic Behavior of a Film Foam Flow with Carbon Dioxide as the Internal Gas Phase
Authors: Du Dong Xing , Li Ying Ge , Sun Shi Jiao
Published: March 2011

There are many attractive features for using CO2 foam injection in Enhanced Oil Recovery (EOR) processes. For understanding CO2 foam rheology in porous media, an experimental study is reported in this paper concerning CO2 film foam flow characteristics in a vertical straight tube. Foam is treated as non-Newtonian fluid and its pseudo-plastic behavior is investigated based on power law constitutive model. It is observed the CO2 film foam flow shows clear shear-thinning behavior, with flow consistency coefficient of K=0.15 and flow behavior index of n=0.48. The apparent viscosity of flowing CO2 film foam is under the shear rate of 50s-1 and under the shear rate of 1000s-1, which are 19 and 3 times higher than the single phase water. It is also found CO2 foam has lower apparent viscosity than the foam with air as the internal gas phase, which is in consistence with experimental observations for lower CO2 foam flow resistance in porous media.
Finite Element Analysis of Performance for Radial Tires, Part II: Simulation Results
Authors: Liu Yong , An Ying , Ding Yu Mei , Xie Peng Cheng , Yang Wei Min
Published: March 2011

The current work is a continuation of Part I. In this part, the simulation results showed that the free tire contour changed measurably after charging and installing it on a steel rim. A distinct stress concentration appeared on the tire shoulder part whenever the tire was charged, touching ground or rolling. When the rotational velocity of the free tire changed, the displacement of the tire crest remains stable while the tire shoulder changes considerably.
Swelling Characterization of Double Sensitive Hydroxypropylcellulose / Sodium Alginate Hydrogel
Authors: Gong Guo Li , Li Hui , Guo Zhen Hua
Published: March 2011

A series of temperature and pH responsive hydrogels was synthesized by using hydroxypropylcellulose (HPC) as temperature sensitivity material and the natural material, sodium alginate (SA) as pH sensitivity material. The effect of SA to LCST has been studied and the mechanism of the influence has been presented. In addition, the swelling ratio and controlling factor of swelling process were all researched in this paper. The main results obtained are as follows: the LCST decreased gradually as added SA into HPC; the HPC/SA hydrogel responded both temperature and pH value of the medium; the swelling ratio reached maximum value as pH value of 6.