bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Adaptive Cutting Method of Roadheader
Authors: Yang Wen Lin , Wang Zhong Bin , Yan Bing Lei
Published: December 2012

The load on the cutting boom of roadheader changes violently because of the changes of rocks hardness. The power of cutter motor is related to the hardness of rock and propulsive force. The propulsive force is determined by the moving speed of cutting boom. The hydraulic control system of arcing cylinders is an electro-hydraulic proportional control system. The adaptive control model is build by Simulink. A PID control is used and the power of cutter motor is keep at a constant state by adjusting the speed of arcing cylinders.
The Fault Detection and Diagnosis System of Hydraulic Excavator Based on PXI Interface Technology
Authors: Mi Liang , Feng Keng , Li Huan Liang , Shao Li Fu
Published: December 2012

The fault detection and diagnosis system, which uses dedicated interface adapter unit and PXI interface modules to perform signal excitation and parameter testing, is introduced in this paper. Its firmware consists of PXI-bus control computer, display control unit, dedicated interface adapter unit, connection cable and power supply unit. The dedicated interface adapter unit (IAU) is the core of hardware platform, and is composed of chassis, I2C-bus data acquisition board, adapter and military aviation sockets. It carries out analog to digital, digital to analog, digital I/O transformation as well as serial communication and CAN-bus communication. The software of the fault detection system is of hierarchical modular structure with integration of system management control, fault detection and circuit hardware driver modules together with repair and diagnosis database. The software provides functions of human-machine interaction, equipment fault detection, fault diagnosis and analysis, repair guidance and data storage. Therefore, this system can implement fault detection of hydraulic excavator on replaceable circuit board and block of the hydraulic system or electrical system. And it can help equipment repairmen and operator perform quick repairs and maintenance to the electrical system and hydraulic circuit of the excavator.
Finite Element Analysis of Electromagnetic Device in Magnetorheological Fluid Brake
Authors: Xiong Guang Jie , Li Ling
Published: December 2012

Magnetorheological fluid (MRF) Brake is a newly-developed intelligent brake in which traditional mechanical brake friction pairs are replaced by MRF materials and the electromagnetism devices are very important components. The controllable magnetic fields are generated by electromagnetism devices which can make MRF materials create related braking torque to control the braking performance of the MRF Brake. In this paper, the electromagnetism device consists of several coil sets which can generate electromagnetic fields for MRF Brake. By using finite element analysis, the magnetic fields generated by electromagnetism devices are compared analytically under the different conditions, and then the optimum parameters are obtained such as coil arrangements, excitation currents and air gap distances and etc. All these evidences are helpful to design the structure of electromagnetism devices in MRF Brake.
Process Optimization of CNC End Milling of Integral Impeller Channels
Authors: Li Qiang , Ouyang Ling Jiang
Published: December 2012

The process optimization model was established in finish machining of the bottom surface of the integral impeller channels. The optimization objective was the maximal productivity, and three process parameters such as spindle speed, feed speed and cutter row space are chosen as design variables. Constrains were analyzed from three aspects: machine tool, cutter and machining quality in accordance with the actual 5-axis machining conditions. The genetic algorithm (GA) was employed to seek the optimum solution. A machining experiment was conducted to compare the efficiency of the optimum parameters with that of the empirical parameters. The results showed that the optimum solution reduced by 29.4% time in comparison with the empirical parameters, which represented that the process optimization was significant in improving the finish machining efficiency of impeller channels.
Research of the Impact on Distance between Thermal Wires and Nozzle for Fluidic Gyroscope
Authors: Zhang Bao Li , Piao Lin Hua , Tang Jin , Mei Chuan Zhi
Published: December 2012

The impact that distance between thermal wires and nozzle on flow distribution of fluidic gyroscope with three different cavity structures was researched. Using the Finite element method we calculated the two-dimensional flow distribution of fluidic gyroscope with rectangular cavity and two streamlined cavity structures when the distance d between thermal wires and nozzle is different. The results show that: flow velocity at the outlet in two streamlined cavities is larger than that in rectangular cavity, which is 28.87% and 28.91% of flow velocity at the nozzle respectively; the velocity in the three cavities decrease with d, the velocity in streamlined cavity 1 is always larger than that in streamlined cavity 2. When d = 16mm and 17mm, there are a larger velocity and a smaller x-axial velocity of the fluidic beam center in streamlined cavity 1, and velocity difference of two thermal wires increase, so the resolution of fluidic gyroscope can have an improvement.
PWM Design for Active Suspension without External Energy Supply Based on LQG Control
Authors: Chen Shian , Li Xuan , Wang Sheng , Zhao Jian Lian , Tang Ze He
Published: December 2012

A PWM controller is designed for the active suspension without external energy supply (ASWEES) using the LQG control method. Based on the quarter-vehicle ASWEES model, Energy flow equation between the suspension and the accumulator with a 2 kW load was deduced and a PWM controller was designed. When 200Hz solenoid valves were adopted, the carrier frequency and series value of the carrier signal were set as 40 and 5 respectively. Simulation results show the suspension quadratic performance index of ASWEES decreases 24.97% than that of the passive suspension. The passive suspension consumes 2.211kW power, but ASWEES reclaims energy of 2 kW.
Multidisciplinary Collaborative Optimization of General Parameters of Low Orbit Spacecraft
Authors: Sun Le Feng , Zhang Bai Nan , Nie Rui
Published: December 2012

This article takes the optimization of general parameters of low-orbit spacecraft as object. Three subsystems of attitude and orbit control subsystem, power subsystem and structure subsystem were researched. Coupling relations between subsystems and system were described. Analysis models of the subsystems were provided. Meanwhile, optimization models of the researched problem were established based on collaborative optimization (CO). Sequential quadratic programming (NLPQL) was selected as search strategy of CO subsystem optimizer. While NLPQL, adaptive simulated annealing algorithm (ASA) and multi-island genetic algorithm (MIGA) were respectively selected as the search strategy of CO system-level optimizer to search. Furthermore, multidisciplinary feasible method (MDF) was used to optimize the same problem. NLPQL, ASA, MIGA were respectively selected as the search strategy of MDF system-level optimizer. The optimization result of CO was compared to the optimization result of MDF shows that using CO can get the result which close to the optimal result. That proves CO can be effectively applied to multidisciplinary design optimization of the general parameters of the low-orbit spacecraft.
Unbalance Compensation Control in Active Magnetic Bearings Using Bias Current Excitation
Authors: Zhang Tao , Ni Wei , Wu Sha Sha , Zhang Hui Ping , Ji Jian Xiang
Published: December 2012

The model of magnetic bearing and vibration producing mechanism were analyzed. A new adaptive law was developed to eliminate the rotor vibration. The adaptive control system for stabilization of the rotor geometric center to the origin was designed by varying magnetic stiffness through excitation of the bias currents. Finally, the simulation results validated the effectiveness of the proposed algorithm
Milling Process Optimization Based on Data from Industrial Shop Floor
Authors: Coppini Nivaldo Lemos , da Rosa Daniel Benedito , de Souza Edson Melo , Honorato João , Gojtan Gerd Erwin Ernst
Published: December 2012

The purpose of this work is to develop an experiment applied to milling process cutting parameters optimization based on data collection from the factory shop floor. The cutting parameters to be optimized were cutting speed, feed rate and depth of cut. Hardened steel dies currently used for forging process were milled to generate data to be used during the experiments. The optimization focus was to minimize the milling process cost or to increase it’s the productivity. Two stages had been used: one based in Design of Experiment (DOE) technique and another based on a deterministic method. Both were used to optimize cutting condition parameters to be applied instead of that being used before the experiments. It was possible to conclude, following DOE method results that were recommended to use the smaller cutting speed, the smaller feed rate and the greatest depth of cut, considering the cutting parameters tested. These results were considered by the authors as initial values to apply a deterministic method. The greatest depth of cut and the smaller feed rate were compatible with the machining conditions of the part, considering the initial blank and surface finish required respectively. So, deterministic method was used only to optimize cutting speed. As final result, the authors conclude that minimum cost cutting speed, greatest around 10% to that one found by DOE method was much more convenient to be applied in shop floor, because the smaller cost involved. Finally, this work allowed also concluding that both DOE and deterministic methods can be used to optimize cutting process parameters taking a small number of results collected from factory shop floor during the process evolution.
Study on Control Characteristics of Driving and Lifting System for Logistics and Loading Machinery
Authors: Chen Guo Jin , Liu Ting Ting , Jin Ni , Gong You Ping , Feng Huo Qing
Published: December 2012

The logistics and loading machinery is the typical hydromechatronics integrated system. How to solve the reasonable power match in the driving and lifting process of the logistics and loading machinery, we need to establish the mathematical model of the driving and lifting system, and analyze their control characteristics. Aiming at the load requirements for different operating conditions, this paper studies respectively the dynamic characteristics of the driving and lifting system. Through simulation and computation, the control methods and strategies based on the best performance are proposed. That lays the foundation for the optimization design of the logistics and loading machinery.
The Application of System Parameters in Eliminating Oscillation and Improving Machining Accuracy of CNC Machine Tool
Authors: Liu Rui Yi , Huang Jun
Published: December 2012

The measures of eliminating system oscillation by using parameters were put forward in semi-closed loop and closed loop control. The setup procedures of parameters were introduced, which included position loop gain, bi-position feedback, mechanical speed feedback. The setting of the parameters such as acceleration of backlash, compensation for static friction, feed forward and look-ahead feed forward of servo were also proposed, for purpose of improving the position accuracy and interpolation accuracy. The application of the system parameters is significant for improving the machining accuracy and ability of CNC machine tools.
Design of a MEMS Temperature Difference Suspended Structure Gas Flowmeter
Authors: Li Hui
Published: December 2012

A micro flowmeter was designed based on MEMS sensor and weak signal acquisition technique. The MEMS sensor adopted VO2 thermal resistor suspended structure, which has good heat isolation performance and high sensitivity. The flow channel was made up of SU-8 gum, and this technology is simple and suitable for batch production because of low cost. The following weak signal acquisition module used super low bias current operational amplifier, aided with Guard ring protection, and 24 bit high resolution ADC to realize high resolution, low noise data acquisition through reasonable layout and ground design. The experiment shows that the entire flowmeter has favorable linearity and sensitivity in the velocity range from 0 to 30mL/min at a certain suitable offset voltage. So it can satisfy the applications in the fields such as biochemical detection, medicine and so on.
Dioptric Fisheye Panoramic Camera Calibration Based on Unifying Spherical Projection Model
Authors: Wang Ke , Wang Liang Liang , Zhao Li Jun , Li Rui Feng
Published: December 2012

In this paper, a calibration method is proposed for fish-eye panoramic camera. We adopt the unifying spherical projection model to represent the optical nature of fisheye camera. Traditional corner detection works unreliably in highly distorted image. Therefore, edge-based corner detection is proposed based on Hough transform. The line segments within corner detection window and their intersection corner points are extracted accurately and reliably due to the robustness of Hough transform. We use the nonlinear optimization technique to estimate the camera parameters. Experimental results demonstrate the performance of our method.
USB Communication Interface Design Based on the PDIUSBD11
Authors: Tang Ming Xin , Xu Jue Xiu
Published: December 2012

Based on the widely used USB communication technology, when the speed requirement is not too high using USB controller chip with I2C bus develops USB interface, you can reduce the use of pin microcontroller ATmega8, simplify connection circuit. This article describes the design method of a Philips company with I2C interface USB interface chip PDIUSBD11, as well as the peripheral hardware circuit connection and USB HID class program design method. The test results show that can reliably achieve communication function between USB and computer, and has good application value.
Design and Implementation of RAM Operation Conflict Arbiter IC in LED/LCD Display Control System
Authors: Jie Zhao , Yu Fei , Wang Jing Xia , Li Liu
Published: December 2012

To solve the writing and reading operation conflict to RAM in LED/LCD display control system, a new RAM operation conflict arbiter IC was proposed. Comparing the traditional dual ports RAM, the IC has the advantages of low-cost and high stability. By analyzing the working principle and structure design, the IC was designed in pure digital way with Verilog HDL, and passed the simulation verify. Finally the IC was realized by Alter FPGA chip and passed the actual test.
Pulse System Based on Noise Detection System Research
Authors: Zhang Xin , Wang Chun Xiu
Published: December 2012

In this paper, based on B & K pulse system, the noise test analysis had been implemented on the load test station of a company in Yinchuan. It is clear and concise that displayed noise distribution situation of the load test set by BK sound intensity probe, 3560B-type multi-analysis system and pc machine. Through the CPB analysis, it can quickly get the main segment of the noise and the real-time monitoring of the gearbox, so the quality of the product is guaranteed.
Study on a Novel Testing System for Aerodynamic Performance of Magnus Wind Turbine Blade
Authors: Yao Qi , Yao Ying Xue , Zhou Liang , Wu Jin Ming , Li Jian Guang
Published: December 2012

The method of texting a blade’s aerodynamic performance used for traditional wind turbine airfoils was making pressure measurement holes on surface of the blade, but Magnus wind turbine blade must rotated at a certain speed to generate lift and drag force, so the method was inapplicable. A novel experimental device for testing aerodynamic performance of Magnus wind turbine’s cylindrical blades had been investigated. This device, which consists of three parts: cylindrical blade, controlling system and testing system, could measure the lift and drag force generated by the Magnus effect on the blades. This paper mainly studied the testing system,including dynamometer and amplifying circuit. At last, the testing system was used in the experiment to test aerodynamic performance of the Magnus wind turbine blade. The results showed that the system could conduct the experiment on testing the lift and drag force on the Magnus wind turbine blades efficiently, and the system could also be used to measure the lift and drag force on traditional wind turbine airfoil.
Testing of Anchored Rock Bolt with Ultrasonic Guided Wave
Authors: He Wen , Liu Qing Sheng , Huang Qi Rui
Published: December 2012

Experiments were conducted to study the attenuation properties of ultrasonic guided wave propagating in anchored rock bolts. Results show that concrete as anchored material at different curing time can represent different bonding quality, and attenuation coefficient value of ultrasonic guided wave in anchored bolt increases as the increasing of curing time. At the mean time, the attenuation coefficient value becomes larger when the anchored length of rock bolt increases. So attenuation coefficient value is an efficient tool to evaluate the bonding quality of anchored rock bolt.
Key Technology in Thermal State Measurement Based on Structured Light Stereo Vision Technique
Authors: Zhang Chi , Li Zhong Wei , Shi Yu Sheng
Published: December 2012

In order to realize online measurement of object in thermal state, a method based on blue structured light stereo vision technique was presented. The key technology includes high brightness blue projection solutions, physical and digital filtering method reducing red thermal radiation, phase shifting and multi-frequency heterodyne principle. The point cloud data could be calculated by projecting 12 or 24 raster images. The experiment proves that the method has advantage of high-speed and high- precision, and it is also simple and convenient, this can meet the requirements of online measurement of medium and small forgings in thermal state.
Measurement and Analysis of Knitting Fabric Pressure
Authors: Song Xiao Xia , Xu Zheng Yan
Published: December 2012

Nowadays people’s requirement about garment comfort is improved. Pressure comfort has been an important part of garment comfort. The structure and performance of knitting fabrics are changed after they are made into clothes with different pressure. The measurement of garment pressure is difficult, but the measurement of fabric performance is easier. So the relationship between fabric performance and pressure comfort is studied in this paper. 8 kinds of knitting fabrics are selected to measure mechanical performance of fabric, such as flexible performance, cut performance, bend performance, compress performance and interface performance. Fabric pressure simulation apparatus is used to simulate fabric pressure variation on elbow and knee. And the pressure is measured and recorded during the deformation of fabric. Same eight kinds of knitting fabrics are used to make basic-style knitwear. The pressure is measured by mannequin pressure testing system
The Fabrication of MnO2 Nanoparticle for Supercapacitor Application
Authors: Kang De Qun , Chen Ze Xiang , Hu Tian Yong , Dong Miao , Ren Jun
Published: December 2012

MnO2 nanoparticle was produced using liquid coprecipitation method, and nanorod and nanowire were produced using hydrothermal method and annealing. SEM and EDS were used to examine the morphology and the elements of the samples. The diameter of particle is about 300nm, the diameter of rod is about 200-300nm, the diameter of wire is about 50-70nm. The electrochemical characteristics were tested using galvanostatic charge-discharge cycling. The results demonstrat that the prepared MnO2 have a good pseudocapacitance behavior and power characteristic. And the specific capacitor (SC) is up to 260.09F/g.
tHcy Detected by High Performance Liquid Chromatography will be a Dangerous Factor for the Invasion of Occlusive Vascular Disease
Authors: Zhou Hong Yan , Zhang Wen Song , Hao Ji Long , Wang Shuang
Published: December 2012

Objective:To study the clinical application of high performance liquid chromatography（HPLC)、Radioimmunodetection and Automatic biochemical Analyzer on the detection of plasma total homocysteine(tHcy)、folic acid（FA）、VitB12、Triglyceride（TG）、total cholesterol(Ch)、high density lipoprotein cholesferol(HDL-C) and low density lipoprotein cholestorol(LDL-C).To manifest mechanism of the increasing of tHcy leading to diabetic retinopathy.Methods:The levels of plasma tHcy 、folic acid、VitB12、blood sugar、 blood pressure and blood lipid were detected by the instrumentations above in diabetic retinopathy cases.Results:The levels of plasma tHcy in diabetic retinopathy group were much higher than that in the control group.Conclusions:We discovered biomarkers of diabetic retinopathy.HPLC method can be used well for the detection of tHcy.
Study of Flying Projectile’s Properties of Infrared Radiation
Authors: Lv Yue Ying , An Ying
Published: December 2012

In order to solve the problem that the optic-electric detecting target board fails to work at nights or under low light level，it has studied the flying projectile’s properties of infrared radiation and the radiation attenuation properties of the flying projectile in the atmosphere. Through establishing the differential equations, the projectile’s surface temperature is obtained to calculate the flying projectile’s infrared radiation properties , according to atmosphere’s transmitting properties，the calculation method of atmospheric transmittance rate. The infrared radiation properties of three typical projectile are simulated by utilizing MATAB. The simulation result shows that the surface temperature of the flying projectile has a linear change with its velocity; the atmospheric transmittance rate is inversely proportional to the detection distance; Once the atmospheric attenuation factor is different, then the radiation energy received by the detector will be different.
Study of Tension Process of Single Crystal Titanium Nano-Rod Based on the Molecular Dynamics
Authors: Jia Hui Ling , Li Zhao Xi , Liu Xue Jie , Qi Yan
Published: December 2012

In this paper, the axial tensile process of single crystal titanium nano-rod is simulated based on the Finnis-Sinclair embedded atom potential by molecular dynamics. The mechanical properties of the titanium nano-rod with different cross-section dimension along three orientations ([0001]、[-12-10]、[10-10]) are analyzed. The results show as follows: 1) The tension process of titanium nano-rod along three orientations all includes four stages which are elastic deformation, uniform plastic deformation, localized necking and fault stage. 2) The larger the cross-section is, the smaller the yield stress is. 3) Along the [0001] orientation the yield stress and elastic modulus of titanium nano-rod is the largest, but fracture strain is the smallest; along the [-12-10] orientation the yield stress and elastic modulus is the smallest, but the fracture strain is the largest; along the [10-10] orientation the tension mechanical properties is in the middle of the other two orientations.
Research on Aircraft Communication and Satellite Link Handoff Simulation for Spatial Information Network
Authors: Ye Xiao Guo , Wang Ru Chuan
Published: December 2012

Aircraft communication and satellite link handoff issues in spatial information network are very important and are focused in this paper. The simulation modules of satellite network nodes and links in network simulator version 2(NS-2) are analyzed in details in this paper. A method of extending NS-2 kernel module is proposed based on analysis of satellite network simulation principle and approach. As an example, the aircraft communication simulation module is designed and implemented. Simulation results show that flight of aircraft has effect on the link handoff characteristic, and show that the proposed extension method is feasible.
Design and Implementation of EPON Network Management System Based on RIA
Authors: Pan Sen , Hu Bin
Published: December 2012

Based on analyzing EPON Network architectures and EPON Network Management functional requirements, this paper designed an EPON Network management System according to configuration management, performance management, fault management, topology management, security management and log management, and achieved a system based on RIA technology and B/S mode. The client was written based on Flex framework and the server was written by JAVA. A middleware technology was used between client and server for communicating. Through the B/S mode and SNMP, the system has achieved a series of management functions of EPON network.
Preparation and Characterization of TiO2 Nanoparticles / CNTs Composite Particles
Authors: Wang Ming Qiu , Yan Jun , Du Shi Guo , Wang Bin , Qin Hao
Published: December 2012

By using tetrabutyl titanate as the main material, TiO2 nanoparticles / CNTs composite particles have been prepared in acidic abundant aqueous solution at low temperature without calcination. The microstructure of the composite particles, including surface morphology, phase composition and specific surface area was characterized by SEM, TEM, Raman, XPS and BET. The results reveal that TiO2 nanoparticles coated uniformly on CNTs surfaces were mainly anatase type. The surface roughness of CNTs was remarkably increased after coating. However, the specific surface area of composite particles decreased by 23.4 m2•g-1 than that of CNTs with uncoated TiO2. Photocatalytic activity of TiO2 nanoparticles / CNTs composite particles shows a significant increase of absorption intensity both in ultraviolet band and visible light band according to UV-vis spectra.
A Granular Computing Based Decision Tree Algorithm and its Application in Intrusion Detection
Authors: Wang Cheng Hua , Zhou Lin , Jiang Feng , Zhao Hong Bo
Published: December 2012

Decision tree algorithms have been widely used in intrusion detection. In this paper, within the framework of granular computing (GrC), we propose a new decision tree algorithm called DTGAE and apply it to intrusion detection. First, by virtue of the GrC model using information tables, we propose a new information entropy model, which contains two basic notions: approximation entropy of granule (AEG) and GrC-based approximation entropy (GAE), where the latter is defined based on the former. In algorithm DTGAE, GAE is adopted as the heuristic information for the selection of splitting attributes. When calculating AEG and GAE, we not only utilize the concept of conditional entropy in Shannon's information theory, but also use the concept of approximation accuracy in rough sets. Second, we present a method of decision tree pre-pruning based on Düntsch's knowledge entropy. Finally, the KDDCUP99 data set is used to verify the effectiveness of our algorithm in intrusion detection.
Sales Impacts of Location Based Advertising Using Wireless Communication Technology
Authors: Liu Zong Jin , Yang Yang , Fang Zheng , Cai Jing
Published: December 2012

Using wireless communication technology, location-based advertising (LBA) is booming recently. Most LBA researches are cross-sectional analysis studying only contemporaneous impacts, which might seriously underestimate advertisings’ efficacy in the long run. Complementary to these researches, we employ a company archival dataset to explore LBA’s and PUA’s (Pop-up Advertising) sales impact in both contemporaneous and long run terms. The developed dynamic structural equation model reveals that (1)in terms of magnitude, LBA’s efficacy is stronger than that of PUA both contemporaneously and accumulatively; (2) in terms of persistent time, while LBA only have contemporaneous impact, PUA’ s impact lasts for 9 days. Theses empirical findings would help managers to allocate advertising budget efficiently while using wireless communication technology.
Decision Tree Technology in Data Classification
Authors: Zhao Hong Yan
Published: December 2012

With the development of database technology as well as the widespread application of database management system, the capability of collecting data was improved rapidly, and lots of data have been accumulated. Data mining was created for the purpose of excavate the useful knowledge hidden behind these data. Data classification is not only an important issue of data mining but also an effective KDD method. Decision Tree, which is a major technology of data classification, is applied far and widely. In this article, the concrete step of mining data by decision tree, the main algorithm and the basic idea of decision tree were summarized and analysed.
Attacks to Li et al.’s Billing Service User Authentication Scheme
Authors: Shieh Wen Gong , Wang Mei Tzu
Published: December 2012

This paper is intended to explore the weakness of Li et al.’s billing service user authentication scheme. The users of this authentication scheme are required to compute a series of session keys and use different session key in different session to strengthen the robustness of this scheme. They are not only difficult to remember but also can be figured out by attacks, making authentication function useless. In addition, the system may cause denial of service because synchronization could not always be guaranteed. We illustrate all possible attacks against this system that may be realized, and give an analysis of its weakness.
Steam Turbine Remote Maintenance Service Support Technology Based on RFID
Authors: Ding Yu Feng , Zhang Yu Qun
Published: December 2012

A framework for supporting steam turbine remote maintenance support service is put forward in this paper. A RFID tag is designed to identify steam turbine. All monitored parameter data is scored in the datacenter of steam turbine cloud platform. User can get all relative data based on the unique RFID tag of steam turbine. The system can also provide fault diagnosis and maintenance solution service for steam turbine based on the fault request. The maintenance solution is given on the basis CBR (case-based reasoning) with rough set theory. A prototype system is developed to demonstrate the feasibility at last.
An Artificial Immune Algorithm and its Application in AVO Inversion
Authors: Zhang Hai Yan , Liu Zi Li
Published: December 2012

An improved artificial immune algorithm is proposed for geophysical P-wave amplitude variation with offset (AVO) inversion. In this paper, the algorithm is described and implemented. The orthogonal crossover is used to generate the initial population and the elitist-crossover is adopted to add the good patterns of the population. The hybrid mutation method is presented to increase the ability of local and global optimization. The improved immune algorithm is then applied to earth interface models of Mexican gulf for AVO inversion. The experimental results show that the improved algorithm is of high precision than the traditional immune algorithm.
The Study on Software Fault Tolerance
Authors: Li Li Qing , Lu Hai , Li Xu Dong
Published: December 2012

Software Fault -tolerance is an effective and reliable design technique and Recovery Block Scheme is an important Software Fault-tolerant measure. Here is the brief introduction of the implementation of Software Fault-tolerant technique and the design pattern by employing software redundancy and then proposes the implementation of Recovery Block Scheme. Firstly, based on the program block’s fault captured by exception-progressing mechanism, it applies the Command Pattern and Active Objective Pattern to manage and schedule arithmetic unit to achieve rollback, clears the data generated by fault operation block and restores to the state before the operation. The design pattern provides a widely available recovery block schemes design pattern, simplifies the implementation of arithmetic unit and gives the core algorithm through Java.
Application of Data Mining in Continual Quality Improvement
Authors: Tan Jun
Published: December 2012

Aiming at improving product quality continually, this paper proposed an association rules mining system (ARMS) based on idea of PDCA cycling. ARMS have the function of resolving problems coordinately which can integrate process parameters in various distributed processes and discover the relationship between process parameters and product quality feature. The framework of ARMS is composed of three main modules: data warehouse platform module, association rules mining module, association rules optimizing module.
The Accuracy Assessment of Weapon System Using Grey Linear Regression Method
Authors: Zhang Dai Yu , Song Bao Wei , Zhu Zhou Quan
Published: December 2012

The accuracy assessment of weapon system is always a complex engineering. How to make the most of the information given in only a few tests and obtain reasonable estimate is always a problem. Based on the fuzzy theory and grey theory, a grey linear regression method is presented. From the numerical example, we can see that this method provides an easy access to deal with data in small sample case and may have potential use in the analysis of weapon performance.
A Novel Video Stream Transmission Control Algorithm
Authors: Wang Ming Wei , Lin Jian Zhong , Xie Xin , Wang Qi
Published: December 2012

Video stream codec and transmission control algorithm is very important to improve quality of service of video on Internet. A priority video transmission algorithm based on queue-length(VTA-QL) is proposed. Different kind of video frame is marked with different priority and is scheduled according to its priority. Simulation results show that the proposed algorithm VTA-QL can improve the video transmission quality greatly, and that link bandwidth, delay and queue length have much effect on video transmission quality.
Mobile Agent Technology in Chinese High Tech Virtual Enterprise Research Summarization
Authors: Sun Bo , Huang Min
Published: December 2012

Mobile Agent technologies have been used widely from pure researching stage into the exploring and the practicing application stage. Relative to the domestic high-tech virtual enterprise, how to use Agent technology to build high-tech virtual enterprise distributed knowledge management system, the sense is great, is novel, this paper through the technology of domestic research were reviewed, and infer that the mobile Agent technology in Chinese high tech virtual enterprise application foreground and development trend
Study of Zhongguancun Intersection Based on Computation Simulation and Analysis
Authors: Sui Xiao Qing , Zhu Yin
Published: December 2012

This paper mainly focuses on the investigation to the Zhongguancun Street and western North Fourth Ring Road intersection which is the traffic centre of Zhongguancun. Through traffic survey, traffic simulation and analysis, the depth dissection is carried on for the intersection’s congestion question. Improvement measures are proposed for signal timing and traffic channeling, and VISSIM is used for the simulation. Finally the performance is evaluated with analysis of delay time, travel time and queue length.
Preparation of Nano-Scale Piece of Sericite by Using Mechanical Exfoliation Method and Ultrasonic Method
Authors: Liang Yu , Ding Hao , Chen Fen
Published: December 2012

The structure of sericite is very stable, so it is hard to peel it directly using traditional methods. In this article, the sericite which was processed through thermal activation, acid treatment, Na-modification and CTAB intercalation was used as raw material to do the exfoliation. The mechanical exfoliation method and ultrasonic method were used respectively to exfoliate the modified sericite. The grain size of final product using mechanical exfoliation method reached 16.6nm and the grain size of final product using ultrasonic method reached 8.1nm. Alongside with the result of TEM images, the ultrasonic method is thought to be better.
Arid Environmental Characters Based on Eco-Information Transfer
Authors: Wang Rang Hui
Published: December 2012

Information type is complex diversity in accord with their characteristics including in arid area. Patterns of information linkage are studied in different matters,such as,between organisms and water, and between plant and animal, etc.The characters and process of the information transfer are also expounded, which is significant importance for understanding the mechanism, pattern, and tendency of building up models for restoration of the degraded arid environment. Based on investigation and analysis,ecological information characteristics have been pointed out,such as,multi-variate,multi-source,scale,compound,multi-dimension,complexity and systemic feature,and so on.Information flow and its simulation in arid environment also has its special features.
E-Mail Classification Based Learning Algorithm Using Support Vector Machine
Authors: Song Mu Hee
Published: December 2012

Due to the distribution of personal computers and the internet, E-mail has become one of the most widely used communicative means. However, a massive amount of spam mail is polluting mailboxes everyday, taking advantage of the ability to send mail to any number of random people through the internet. In this paper we will introduce an efficient method of classifying E-mails using the SVM(Support Vector Machine) learning algorithm, which is recently showing high performance in the field of classifying documents. The disposition of the words inside the E-mail documents are extracted, and the performance of classification is compared and examined through the learning based on the change of DF value which occurs to reduce the disposition space in the learning level. To assess the performance of the SVM, the SVM is compared to the Naïve Bayes classifier (which uses probability methods) and a vector model classifier in order to verify that the method of using the learning algorithm of SVM shows better performance.
Research on Software Trusted Dynamic Measurement
Authors: Hao Rui , Peng Xin Guang , Xiu Lei
Published: December 2012

For the problem of trust chain of Trusted Computing Group (TCG), which only measures static integrity to the system resources, we extend the TCG chain to the software application layer and propose to extract return addresses of functions in call stacks dynamically for obtaining system call short sequences as software behavior and By monitoring softare behavior based on SVM,we realize software trusted dynamic measurement.
Robust Software Watermarking for Protecting Three Dimension Applications Developed Using jMonkey Engine
Authors: Fu Dong Lai
Published: December 2012

To prevent three dimension applications developed using jMonkey Engine from being pirated, a robust software watermarking algorithm was proposed. A watermark based on an initial sequence of scene-graph-traversal was embedded into the software by a numbering system. Since the initial sequence was a very important clue for extracting the embedded watermark, it should be only known by the owner. Furthermore, the algorithm for embedding and extracting the watermark was discussed. Analysis shows that the new method is more robust. And it enjoys the advantage that the size of scene graph does not be changed.
Software Reliability Assessment Based on Fuzzy Evaluation
Authors: Liu Li Xin , Li Qiu Ying
Published: December 2012

Software reliability assessment plays an important role in the software reliability engineering, but the traditional software assessment method mostly focuses on evaluation by use of failure data which is gained only after testing or usage in the late phase of the software life cycle. Thus people hope to get every stage’s information about the software’s reliability which is taken as the reference or accordance to guide the software’s design, analysis and testing and so on. The correlative factors of various products, processes and resources in the whole software life cycle have a very important effect on software reliability and, uncertainty exists in the software reliability evaluation to some extent. Fuzzy evaluation has a strong applicability for solving the fuzzy problem and an approach for software reliability qualitative evaluation based on fuzzy evaluation was proposed in this paper. Firstly the rationale and process of this method were described in detail, then a case study was implemented. The experimental results showed that the approach was feasible and effective.
Facile Synthesis and Electrochemical Characterization of PbO@C Nanocomposites
Authors: Liu Chao Yang , Yu Jian Guo , Fan Jun Qin , Zhao Yong Nan , Xue Xu Fei
Published: December 2012

PbO@C nanocomposites were synthesized by soaking maize in Pb(NO3)2 solutions followed by calcination in nitrogen atmosphere. TEM photos showed highly dispersed PbO nanoparticles homogeneously embedded in the carbon matrix and the main particle sizes of PbO were distributed between 15-29 nm. Electrochemical tests revealed a high specific capacity of 152.6 Fg-1 and good stability at discharge current density of 1.0 Ag-1.
Information Service System of Manufacturing Industry: Current Situation, Problem and Future Trend
Authors: Cui Yu , Ge Xin Quan , Zhang Jian , Jiao Hao
Published: December 2012

In China, more and more enterprises have noticed the importance of informationization, and they performed as main body in informationization of manufacturing industry. Problems of information service system for manufacturing industry include government failure, market failure, mixed function of government and enterprise, authentication system and technology standard scarcity, and professional expert scarcity and low capacity. So the mission of information service system building in manufacturing industry include to establish technology service standard system, regulation and institution, establish networking and collaborating resource allocation system, set up market entry certification system, establish industry association, build human resource training system, and mix Chinese culture and western culture.
Research on VARTM Technology for Fabricating Basalt Fiber/Vinyl Ester Composites
Authors: Sun Zu Li , Guo Ming En , Yu Zhi Ning
Published: December 2012

Basalt fiber has good sea water resistance, heat resistance and sound insulation. This shows that, basalt fiber is ideal material for ship manufacturing. Because of the bad fiber permeability, using VARTM process to produce large basalt fiber marine components still has deficiency. Taking basalt fiber/vinyl resin composite shell as object, research was taken to find the method of improving resin flow velocity and suitable resin injection strategy system in VARTM process. The results show that air release additive contributes to the resin’s flow in preform body, and the tensile strength and flexural strength of components increase with the increase of air release additive’s quantum when the quantum less than 0.5%. The resin flow’s frontier of the components made by sequence injection strategy is always keeping the same and its velocity is uniform, which makes its quality is better than that made by embranchment injection strategy.
Analysis and Design of Monitoring System in Coal Mine Based on Internet of Things
Authors: Qi Yan Jun , Ji Wen Li , Li Qiang
Published: December 2012

Perceived work environment in coal mine is part of the intelligent management of modern mine. Based on the existing backbone network, combined with the Internet of Things technologies, the architecture and functionality of the downhole monitoring system are presented. Hardware design of sensors and the principle of downhole location are analyzed. Describe the system features of anti-interference, higher warning level, high work efficiency. For receiving the data of downhole environment and location of workers, managers can carry out intelligent management and decision-making in emergency rescue and production decisions.
Data Processing Method for High-Speed Signal Acquisition Mode
Authors: Su Jia Qiang , Tang Hong Qun , Tang Bin , Wang Hao , Liang Jian Lin
Published: December 2012

The data processing of cutting force is the key and basis to study various parameters of high-speed milling. To be able to read and process data quickly and accurately, especially for amounts of data lines, the researchers developed a data processing software (DPP--Data Processing Program) in high-speed milling with the use of advanced object-oriented C # language and Matlab software interface technology. After introducing the DDP, the paper also summarized and analyzed the application strategies, which can provide evidence for data processing under similar conditions.
Preparation and Characterization on PU/CS Nanofiber Membrane
Authors: Jiao Long , Kang Wei Min , Cheng Bo Wen
Published: December 2012

PU/CS nanofiber membrane was prepared by means of electrostatic spinning. The morphology of nanofiber membrane was examined by a scanning electron microscope (SEM), and the mechanical property, water absorption, moisture permeability and antibacterial performance were also investigated. The results show that the diameter and mechanical property of PU/CS nanofiber decreased with the increase of the content of CS. However, the water absorption, moisture permeability and antibacterial performance were improved significantly with the addition of CS.
Research on the Extended Product Design Knowledge Classification System within a Distributed Knowledge Resources Environment
Authors: Ma Xue Fen , Dai Xu Dong
Published: December 2012

Within a distributed knowledge resources environment, the product design activities usually are participated by design entity, resource units and design knowledge resource register center. The appropriate design knowledge classification system is the basis of the product design under this environment. The functional design is an especially important phase for designing the innovational products. In the phase, the main problems are not technical problems but are socio-technical problems. The functional design, most often, requires not only the natural science knowledge, but also social science knowledge. The functional design is completed by many more design experts not only from psychology and other natural science, but also from many social science areas, which increases the difficulty and complexity of product design and design knowledge search within a distributed resources environment. On the basis of analyzing the modern product design, especially the features of functional design, this paper proposes an extended six-dimension design knowledge classification system which mainly extends the discipline, product and application process dimension. Finally, this paper makes brief introduction about the application of this classification system.
Supporting Research of Product Innovative Design Knowledge for Novices
Authors: Shen Jiao Qi , Yang Cheng , Zhao Xiao Ke
Published: December 2012

In order to support novice designers for product innovative design, we presented a knowledge management system of product innovative design with an ontology model, which is based on the process of product innovative design and the principle of taxonomy. The system is used to collect, process, reuse and share the knowledge of product innovative design, to help novices to search and apply the relevant design cases, and to speed up the knowledge conversion process, so as to develop the design concepts faster and more efficiently. We invited novices to use the system, and according to the feedback to verify the availability of the system.
Platform Configuration Method of the Wheel Loader Products Based on the Customers’ Demands
Authors: Chen Yan Hui , Hu Yi Hua
Published: December 2012

This paper presents a kind of the platform configuration method of the wheel loader products based on the customers’ demands. This method first analyzes the customers’ demands for the wheel loaders and divides it into two major categories of the binding demand and selective demand, then performs the optional configuration for the modular product platform based on the customers’ binding demand, the similar matrix of the platform configuration of the wheel loaders is established and the similarity between the customers’ demand set and the product platforms is calculated to carry out the optimized configuration for the product platforms, finally an example of the product platform configuration of the wheel loaders is given.