bluuebunny/crossref_metadata_2025 huggingface dataset:
Primary Study on the Anatomical Construction and Physical-Mechanical-Properties of Introduced Dalbergia sissoo
Authors: Shi Lei , Sun Qing Feng , Deng Jiang
Published: March 2011

This paper studies the anatomical construction and physical-mechanical properties of Dalbergia sissoo Roxb introduced from Nepal planting in Yuan Jiang in Yunnan Province. Results indicated: Dalbergia sissoo is diffuse-porous wood and the form of its fiber is even with an average length of 1.43mm。The micro fibril angle is 12.24°.The air-dried and profile density are respectively 0.746 g/cm3 and 0.634 g/cm3, which are normal. The air-dried and oven-dried of variance shrinkage are 1.75 and 1.55 respectively. The comprehensive quality coefficient of Dalbergia sissoo is 2309×105 Pa, which is a high quality wood for higher level material. The comprehensive study shows that human breeding Dalbergia sissoo owns elevating quality.
CSLA.NET Based N-Layer Application Framework of Warehouse Management System
Authors: Zhang Xin Hong , Cui Yan Bin , Li Rui , Zhang Fan
Published: March 2011

Warehouse management system (WMS) direct and optimize stock based on real-time information about the status of utilization. The primary purpose of a WMS is to control the movement and storage of materials within a warehouse. With the widespread use of Internet and the growing complexity on corporate information, distributed architecture has become the first option on building enterprise applications. This paper introduces the CSLA.NET framework, and using .NET platform CSLA.NET distributed under the framework, and designing a set of distributed Warehouse Management System solutions.
Time Synchronism of Dynamic Password Status Authentication
Authors: Huang Wei Jian , Guo Lin Feng
Published: March 2011

The e-commerce transaction process customers are most worried about is the security issues. Targeted e-commerce transaction authentication security that prevail in question time synchronization based on a dynamic password authentication technology, and gives a concrete realization of identity authentication process. The main advantage of this technology is a dynamic one-time passwords, and simple operation, transmission using RSA encryption algorithm. Network Time Protocol NTP for time synchronization of standard internet protocols, to solve the difficult problem of time synchronization.
Preparation of Nitrogen-Containing Stainless Steels by Vibration Milling and Cold-Press Sintering
Authors: Cui Da Wei
Published: March 2011

Nitrogen-containing nickel-free Fe-18Cr-10Mn-2Mo stainless steel powders were produced by high-energy vibration ball milling under flowing nitrogen atmosphere. It can be found when milling below 4h, the nitrogen contents of the powders tend to be higher level and their particle sizes reduce with increasing the milling time, but when milling beyond 4h, the particle sizes of the powders could not be further refined and the nitrogen contents of the powders increase quite slowly. During high-energy ball milling, there is no new phase formed in the milled powders. The powders milled for 4h, whose nitrogen content is 0.42%, were cold-pressed and sintered under flowing nitrogen atmosphere. The sintered bodies have a ferrite-austenite duplex microstructure, and obtain a relative density as high as 97.2% and a final nitrogen content of 0.38%. The mechanical tensile properties of the sintered bodies are far superior to those of the nitrogen-containing stainless steel prepared by high nitrogen pressure melting technique.
An Advanced Self-Adaptive Iterative Decoding Scheme Based on Stopping Criterion
Authors: Liu Shu Yang , Li Jian Ping , Cai Chao Shi
Published: March 2011

This paper proposes an advanced iterative decoding scheme based on stopping criterion for BICM-ID embedded turbo codes. A fixed iterative number scheme has been used in the receiver and lower complexity than the conventional schedule can be achieved. To acquire a smaller total iterative number and fewer calculations of CE, the maximum and minimum iterative numbers (Imax/Imin) are introduced in this proposed scheme. However, iterative numbers which correspond to different SNRs are varied. In order to receive better flexibility, both Imax and Imin, whose values are not unique, are determined by the statistics of the average iterative numbers and the CG criterion. Simulation results confirm that, compared with the fixed iterative number scheme, similar BER performances and much lower complexity can be achieved. Further improvement of the adaptability results from this self-adaptive option of Imax/Imin.
Analysis for TCSC in Single Phase Power System Simulation
Authors: Dai Wen Jin , Chen Xiang Jie
Published: March 2011

This paper carries on the stable state simulation and transition condition simulation for the single phase power systems, which are without TCSC and with TCSC systems. Both without TCSC and with TCSC circuits in the single-phase power system, have been carried out a detailed steady state and transition condition simulation, and studied the influence for TCSC that on power system load voltage and load power. In addition, applies the TCSC conventional PID impedance control mode, with TCSC fuzzy PID impedance control in the electrical power system, contrasts their function that display in the electrical power system operation, and demonstrate the two controllers’ advantage and disadvantage. In the stable state simulation, establishes the systems operation separately in the two kind of situations that rated load and overload, observes the respective load voltage profile, and carries on the comparison with other, in order to study the function for TCSC that work s in the single phase power system normal operation time . In the transition condition simulation, establishment short trouble, views the system transition condition’s load voltage, makes its profile the comparison, and studies TCSC in the single phase power system transition condition function. At the same time, considered the difference for TCSC impedance control modes, as well each as the influence which produces to the TCSC performance characteristic, makes the TCSC conventional PID impedance control mode and TCSC fuzzy PID impedance control mode to apply in the single phase power system separately, and carries on the two's simulation profile in detail contrastive analysis . The simulation result indicated that TCSC has the tidal current control and the damping line power vibration, enhances the electrical power system transition condition stably many kinds of functions, in the stable state condition, TCSC can increase system's transportation power, and reduce the electric transmission loss; under the transition condition, TCSC can suppress the system power oscillation and enhance the system stability.
A Scalable Routing Architecture for Resource Discovery in Cloud Computing
Authors: Zheng Gui De , Chen Ming
Published: March 2011

Cloud Computing technology enables the sharing and collaborating of wide variety of resources. To fully utilize these resources, effective discovery techniques are necessities. Proposing and designing a resource discovery scheme based on Economic Agent. Base on the economic model and the technique in agent of grouping nodes sharing similar files to improve efficiency, this thesis suggests a resource discovery scheme based on economic agent, which is called EAGRD. Theoretical models on resource discovery are provided, under which EAGRD is compared with existing schemes theoretically. By controlling propagation of message into related communities, EAGRD improves time and network efficiency at the cost of topological maintenance overhead. Results from simulation demonstrate that this architecture is very effective in Cloud Computing resource discovery.
Algorithm Researching of RBF Neural Network Based on Improved PSO
Authors: Chen Hua , Fan Yi Ren , Deng Shao Gui
Published: March 2011

In view of the defect of particle swarm optimization which easily gets into partial extremum, the paper put out an improved particle swarm optimization, and applies the algorithm to the selecting of parameter of RBF neural network basal function. It searches the best parameter vector in the whole space, according to coding means, iterative formula, adapted function which the paper puts forwards. The experiment proves that RBF neural network based on improved PSO has faster convergent speed, and higher error precision.
The Heat Charge and Discharge Characteristics Simulation of Phase Change Thermal Storage Device
Authors: Tian Hai Chuan , Xu Feng , Yang Guo Li , Wu Teng Fei
Published: March 2011

The two-dimensional unsteady heat transfer model is been established. Analyzing on heat storage-release property of phase change thermal storage device within the fluid parallel spiral pipes in various conditions, suggestions are put forward to strengthen thermal storage for the device.
A No-Reference Quality Assessment System for Video Streaming over RTP
Authors: Yang Fu Zheng , Song Jia Run , Wan Shu Ai
Published: March 2011

In the paper a no-reference system for quality assessment of video streaming over RTP is proposed for monitoring the quality of networked video. The proposed system is composed of four modules, where the quality assessment module utilizes information extracted from the bit-stream by the modules of RTP header analysis, frame header analysis and display buffer simulation. Taking MPEG-4 encoded video stream over RTP as an example, the process of video quality assessment using the proposed system is described in this paper. The proposed system is featured by its high efficiency without sorting to the original video or video decoding, and therefore well suited for real-time networked video applications.
Microstructure and Properties of Fe-Based Composite Coating by Plasma Jet Surface Metallurgy
Authors: Chen Hao , Yang Jian Gao , Chen Mi Song
Published: March 2011

The Fe-based composite coatings were formed by plasma jet surface metallurgy using Fe, C, W, Cr and Al alloy powders on the low carbon steel. The morphology, microstructure, interface structure and the distribution of the in situ particles in the coatings were observed with optical microscope, scanning electron microscope and x-ray diffraction analysis. The results show that metallurgical bonding is obtained between coating and substrate, and the microstructure of coatings is mainly composed of γ-Fe, (Fe,Cr,W,Nb)7C3 and AlFe particles which are synthesized in stiu, are dispersivly distributed in the coatings. The micro-hardness gradually increased from bottom to the top of the coating, the maximum is 986 Hv0.1, about 4 times larger than that of the steel substrate.
Design and Realization of Double-Buses Modularized Structure Image Processing System
Authors: Zhang Biao , Wang Yue Huan
Published: March 2011

It is double-buses modularized structure with the combination of system control bus and high speed image data bus which is put forward in this paper. Moreover, the management and distribution of image data bus and the design of system reset procedure are elaborated through which a kind of practical real-time image processing system with the strongest adaptability and capability for structure programming and system expansion. The computing capability in infrared test of small target is greatly improved which is verified in tri DSP model system. According to complex image processing task, through the adjustment of parallel structure of image processing algorithm, the higher parallel efficiency can be realized. So to say, the system structure has a great adjustment to algorithm parallel structure and can be successfully used as a platform for universal real-time image processing.
Preparation and Retarding Characteristics of Coal/Mg,Al-Hydrotalcite Composites
Authors: Ren Xiu Bin , Zhou An Ning , Liu Bo , Lei Long
Published: March 2011

Coal/Mg,Al-hydrotalcite composites were prepared and the flame-retardant properties were studied. DSC analysis was used to study the flame-retardant properties of the composites. The results showed that the heat release of coal can be effectively decreased and the ignition point of the coal can be availably increased. The results indicated that coal/Mg,Al-hydrotalcite composites showed excellent flame-retardant performance.
Control Method of Preventing Splashing in the Process of BOF Refining Steel Based on Soft-Measuring Technology
Authors: You Wen , Ma Hai Tao , Zhang Niao Na
Published: March 2011

This article raise a new control method to prevent splashing in the process of BOF refining steel, the method is based on soft-sensing technology, use the infrared temperature measurement device installed in the top gun and bottom gun, on-line detect the temperature difference of liquid slag surface and molten steel in the furnace, with the temperature difference we can get FeO content in the liquid slag, according to the degree that occur away from the splashing, temperature range is quantified five intervals, according to fall into the interval based on the temperature difference, adjust the top-gun position and the intensity of supplying oxygen and argon, to control carbon-oxygen reaction rate and FeO content in the slag, add auxiliary material in order to improve liquid slag mobility and oxidation when foam degree of liquid slag is too high or in the “back to dry” interval, in order to prevent splashing.
Study on the Order Analysis of the Vehicle Transmission Torsional Vibration
Authors: Zhou Bin , Jiang Zheng Feng , Zeng Rong
Published: March 2011

The torsional vibration is a kind of particular vibration form which exists in the work process of the vehicle’s transmission. It is easy to cause the noise and vibration of the vehicles, which will affect the riding comfort and even lead to serious safety problem. On the basis of mechanism analyzing of the torsional vibration, this paper studies on the torsional vibration of the vehicle’s transmission by order analysis method. Through the torsional vibration test under a certain working condition on test bed, the order analysis method is proved to be valid and accurate. So it can provide reference for the design of the transmission and its improvement.
Self-Aligned Growth and Optimization of Carbon Nanotube
Authors: Wu Ying , Zhou Zhao Ying , Sun Li Jun , Zhang Jin , Zhang Xiao Yun
Published: March 2011

CNT-based integrated components show potential application in many fields. The growth of carbon nanotube is very important process for the fabrication of CNT-based component. Self-aligned growth of carbon nanotube method by gas-flowing techniques is reported in this paper, which results in CNT growth along gas-flow direction. The effect of gas-flow was analyzed with numerical simulation and the growth optimization was put forward. Scanning electronic microscopy (SEM) images demonstrate that the self-aligned carbon nanotube can be realized by a gas-flowing CVD process and the distribution of carbon nanotube can be controlled by the gas-flowing rates. This research provides a parallel method for the large-scale integration of carbon nanotube into electronic, optoelectronic, and sensing systems.
A Remote Robot Control System Based on RIA and Flex Platform
Authors: Tan Bao Hua , Zhu Qing Bo
Published: March 2011

A remote robot control system was introduced, which is based on RIA (Rich Internet Application) technology and Flex platform. The system is comprised of two parts, which are the robot control module and the design module for foreground Web page application. This paper introduced the functions of each sub block, as well as the design of the programs. Meanwhile, the construction of the whole Web Service system has been specifically outlined. By using Flex technology, the system realized an asynchronous communication between Web and Web Service components， so that the real-time capacity has been greatly enhanced.
Study on Shape Recovery Behaviors of Epoxy-Based Shape Memory Polymer
Authors: Zhou Bo , Wu Xue Lian , Liu Yan Ju , Leng Jin Song
Published: March 2011

The glass transition temperatures of epoxy-based shape memory polymers (SMPs), which contain a flexibilizer at various contents of 0%, 5%, 10% and 15% respectively, are determined through DMA tests. The shape memory effect of such materials is investigated through shape recovery experiments. Experimental results show that the content of flexibilizer has much influence on the shape memory effect of epoxy-based SMP. A shape recovery equation is developed based on the results of shape recovery experiment. Numerical calculations show that the developed shape recovery equation well predicts the shape recovery behaviors of epoxy-based SMP.
Mechanical Behaviors of Shape Memory Polymer with Linear Monomer
Authors: Zhou Bo , Wu Xue Lian , Liu Yan Ju , Leng Jin Song
Published: March 2011

The mechanical behaviors of epoxy-based shape memory polymer (SMP) with linear monomer at the temperatures of 25oC, 42oC, 56oC and 66oC are respectively investigated through the tension tests. Material parameter equations are supposed to describe the relationships between the material parameters of SMP with linear monomer and temperature. Numerical calculations show that the supposed material parameter equations well predict the relationships between the material parameters of SMP with linear monomer and temperature.
Simulation on Optoelectronic Properties of Carbon Nanotube Based Device
Authors: Wu Ying , Bai Jun Jie , Xiang Yi , Ou Yi Hong , Zhou Cheng Sheng
Published: March 2011

The optoelectronic properties are very important to the design and fabrication of carbon nonoutbe based devices. This paper build the electromagnetic model for the carbon nanotube photosensitive device excited by the light source and making an analysis of optoelectronic properties of the photosensitive device by numerical simulation technology. Based on the theoretical analysis and numerical simulation, some constructive advices for the design of such kind of photosensitive device are given.
Review on Calculation Methods of Structural System Reliability
Authors: Li Yan Cang , Cheng Fang Meng , Zhou Shu Jing
Published: March 2011

In order to find a way to study the structure reliability further, the basic system of structural and the methods of analyzing were introduced. For the series system and parallel system, the calculation can be categorized into Point estimated method and interval estimated method. The point estimated method includes Stevenson-Moses method, Probability Network Evaluation Technique, Conditional Probability Method and Integrated Correlation Coefficient Method. The interval estimated method includes General boundaries of range and the narrow boundaries of range. The principle of method and the calculation steps methods were depicted in detail. This study has significance in theory and practice for the study of structural reliability.
Design and Implementation of Hybrid Electric Vehicle Control System CAN Communication
Authors: Lian Jing , Zhou Ya Fu , Sun Xin Han , Tian Bao Yu , Lin Chang Jia
Published: March 2011

Based on the vehicle CAN bus technology, with features of Hybrid Electric Vehicle (HEV) control network be concerned, CAN bus protocols of application layer suitable for HEV are developed in the paper. And control network is built based on multi-master CAN distributed control technology. Through CAN controller programming of DSP, supported by the corresponding external drive circuit, the motor controller nodes is connected with the vehicle CAN network. Finally the CAN Bus communication of HEV energy assembly control system is designed and realized. Experimental result indicates that the system works well with stable signal and strong anti-jamming ability, and the communication with HEV CAN bus is realized successfully.
Review of Genetic Algorithm
Authors: Li Yan Cang , Zhao Li Na , Zhou Shu Jing
Published: March 2011

In recent years the genetic algorithm (GA) has received more and more attention of scholars. In order to find an effective way to use GA widely, the basic knowlege of GA was introduced. After the introduction of its development, characteristic and application, the trends of its modification and application were analyzed. This study has significance in theory and practice for the study of GA.
Critical Problems when Analyzing the Flight Force of Insect by its Wing Distortion
Authors: Jin Xiao Yi
Published: March 2011

Rigid wing is a kind of wing model when making the experiment of high lift mechanism in insect flight and the research of numerical simulation. In this model, we neglect the wing distortion and regard insect wing as a rigid sheet. On the contrary, flexible wing is a wing model that differs from the rigid wing when analyzing the flight theory of the bionics flapping aerocraft. In this model, we think that the wing distortion has a great effect to lift force and regard insect wing as a flexible sheet. When considering the insect wing as a flexible wing, the force analysis of insect flying has a big difference from the traditional analysis to the rigid wing. Based on the viewpoint of the flexible wing, this paper researches some key points on the flight force of the insect wing such as wing structure, the measures of the wing distortion, the influence from the wing distortion for the lead airstreams angle and the lift coefficient, the reciprocity of the wing distortion and the vortex, Magnus Effect and Wake Capture. A clear understanding toward these problems is a help to know the reason why the flexible wing is advanced to the rigid wing and why the bionics wing just need to make a simple rhythmic locomotion. The discussion in this paper will benefit the future research to the bionics flapping aerocraft with flexible wing.
Finite Element Analysis of Pixel Structure of Uncooled Microbolometer for Food Operation Environment
Authors: Zhao Fu , Wang Ping , Gong Yan Jue , Zhang Li , Meng Chun Ling
Published: March 2011

Uncooled infrared bolometer arrays have become mainstream low-cost thermal detector used in applications such as firefighting, security and surveillance, and environment temperature control for food operation. In order to resolve the pixel structure’s stress problem of microbolometer, this paper adopts finite element analysis method to model and analyze the mechanical properties of pixel structure. Several results of the stress and displacement are presented and the influence of structure optimization on the stress is also analyzed quantitatively. The research provides a good foundation and mechanics reference for mechanical design of uncooled microbolometer.
USB2.0-Based Data Acquisition System
Authors: He Hong , Zhang Xiao Lun , Zhang Da Jian , Hou Ming Feng
Published: March 2011

CY7C68013 data acquisition card generally connect GPIF with other peripherals through the external FIFO, not only increasing the device but getting poor real-time relatively. This paper, USB2.0-Based data acquisition system, solves this problem successfully. The system based on high-speed USB2.0 transmission control chip CY7C68013, uses GPIF connected A / D device directly. Calculate time intervals correctly, not only avoiding data loss, but also saving the FIFO memory and related connections, which greatly reduce costs. This paper describes how the GPIF connects to A / D chip as well as designing of firmware and application programs.
Daqing Spirit and the Enterprise Culture Construction
Authors: Yang Liu
Published: March 2011

Daqing spirit is the important component of Chinese nation spirit. Daqing spirit and enterprise culture are all in the Socialist era, Daqing spirit is the important content of socialist spiritual civilization, while the building of enterprise culture calls for the socialist spiritual civilization; Daqing spirit also has many identities for the competitive consciousness of enterprise culture under the condition of market economy. Therefore, the current socialism enterprise culture construction needs Daqing spirit.
USB Interfaces are Based on the Metal which Measurement
Authors: He Hong , Peng Jian Li , Zhang Da Jian , Hou Ming Feng
Published: March 2011

Corrosion rate in measuring metal corrosion by electrochemical sensors measuring speed, through the internal chip processed data to the screen, the traditional method of communication with the host computer is using RS232 or RS485 interface does not have hot swappable and Plug features used, storage capacity is also limited. To solve this problem, the device USB-interface to communicate with the host computer and realized the hot swap and plug and play function, memory is extended and improve equipment storage capacity, the design of PC applications that facilitates the user. Experimental results show that the system has good stability, easy operation, greatly increased the use of the instrument, a bright future.
Optical Differentiation Method of Materials Based on the Modeling of Scattering Characteristics
Authors: Xu Shi Xue , Xu Ling Fei , Chen Yan Ru
Published: March 2011

Differentiation of materials in optical method is significant and widely applied in engineering. The target of detection is usually not a light source, therefore, we differentiate materials of target by analyzing the information of the scattered light from the surface of the target which is lighten by given light source or natural light. The analysis of the information in the scattered light becomes the most important issue in this condition. Based on the discussion of several kinds of optical differentiation method of materials, a measuring experiment has been developed to the scattering characteristics of given materials which could be described by the modeling given in this paper. The experimental result indicates that the application of optical differentiation method of materials could be widely expanded by using suitable materials’ scattering characteristics modeling method. Relative modeling methods of material scattering characteristics and their possibility of applying in materials differentiation engineering are also be discussed.
Image Encryption Algorithm Based on Even Scrambling
Authors: Zhang Jian , Ren Hong E , Chen Yu
Published: March 2011

Image scrambling is an important method to achieve images secrecy. Arnold cat transformation is widely applied, and its scrambling effect is better relatively in the classical scrambling algorithms. But it has some shortcomings of short key qualities and poor universal property. It brings forward an algorithm of image position even scrambling through improving the Arnold cat transformation. On the basis of position scrambling, the image pixel values are scrambled using chaotic map. Experimental results show that the algorithm has many advantages of increasing key qualities obviously, satisfactory effect of scrambling, and the pixel values of the image are both changed.
An Improved Channel Estimation Algorithm Based on Superimposed Training Sequence
Authors: Yang Jie , Zhang Hua Min , Xie Wu
Published: March 2011

A channel estimation algorithm based on superimposed training sequence is proposed in this paper. The algorithm does not need the allocation of time slot for superimposed training sequence, and it can estimate the channel coefficients without loss of bandwidth. The mean squared difference, Cramer-Rao bound and the lower bound of channel capacity are deduced based on the LS algorithm of channel estimation. It has simple structure, less computational requirement by using the LS algorithm. The result of simulation shows that the performance of system is improved to a large extent by using superimposed training sequence rather than direct training sequence, and the capacity of system is also increased.
Molecular Dynamics Simulation of Irradiation Damage in bcc Iron
Authors: Wang Jian Wei , Shang Xin Chun , Lv Guo Cai
Published: March 2011

Computer simulation techniques in atom scale have now become so powerful that phenomena associated with irradiation damage effects in metals can be modelled with a high degree of realism. As a powerful tool, molecular dynamics (MD) is applied to study the displacement cascades initiated by the neutrons when they interact with matter. There exist a lot of inter-atomic potentials dedicated to bcc Fe and we choose the EAM potential. At first time PKAs (Primary knock-on atoms) knocked on a atom and send a part of energy to it what result displacement cascades. After about several ps, a lot of atoms are knocked to leave the equilibrium position and became self- interstitial atoms (SIAs). A lot of equilibrium position became vacancies. Some SIAs and vacancies form dumb-bells structure. Several vacancies or SIAs assembled the clusters. In other papers we haven’t found about the SIAs and vacancies can be assembled the SFT-like clusters in bcc Fe. In our study, we occasionally find SIAs can assemble to form the cluster in bcc Fe but need a higher energy. In our study, we choose the temperature from 100K to 600K, the energy from 100eV to 20keV. The particles scale is about 300 thousands. In a series of experimentation we find that as the temperature increase as the number of the SIAs and vacancies increase too. By the same token, as the energy increase we will find the same result.
Adsorption Properties of Self-Assembly Synthesized Microporous Silica Material from Acidic Aqueous Media
Authors: Ji Yan Yan , Zhang Biao , Wang Xiao Chun
Published: March 2011

Microporous silica material AMPS has been synthesized via TEA+ cations assisted self-assembly of silica species in acidic aqueous solution. Nitrogen adsorption analysis revealed 0.65 nm uniform micropores in AMPS, companied with a Langmuir surface area of 745 m2/g and a pore volume of 0.22 cm3/g. The microporous AMPS exhibited an excellent adsorptive performance for volatile organic compounds (VOC) such as cyclohexane and acetone, compared with conventional zeolites such as Y, ZSM-5 and A. The adsorption was rapidly saturated at lower relative pressure with higher capacities than that of conventional zeolites. These features implied promising potentials in the separation and removal of VOCs in the atmosphere by using APS-3.
I2C-Bus Design Based on FPGA
Authors: Cao Da , Wu Shun Xiang , Su Long Jiang
Published: March 2011

Introduced field programmable gate array FPGA with I2C bus interface device interface design. Programming with VHDL, using general FPGA I/O port to generate I2C bus interface signal timing, achieved FPGA with I2C-bus devices data communication, went through the simulation test, given the application example of FPGA with I2C-bus EEPROOM chip AT24C02 connected hardware design.
A Study on Heart Load Affected by Industrial Noise
Authors: Mo Qiu Yun , Gao Feng
Published: March 2011

This paper demonstrates a method and its implementation on workers’ heart load affected by industry noise, and, to develop a related data processing system. Heart rate variability (HRV) is used as an assessment index. The affected regulation of human’s heart is obtained by large number of noise experiments. This method emphasizes the human heart load among the all factors of labor safeties, the noise influence discipline can be debated scientifically from both engineering physiology and psychology. The results show when to control the industrial noise it is much important to control the ingredient of noise main frequency not the audio-level.
The Analysis of a Botnet Based on HTTP Protocol
Authors: Feng Xing Xing , Peng Yan , Zhao Yi Long
Published: March 2011

Botnet is a kind of computer clusters which hackers have controlled by one to many command channels for malicious purposes. Using a botnet, hacker can conduct the denial of service attacks, send massive spam and steal confidential personal easily. A Botnet's control channel by the initial based on IRC protocol has become complicated channel based on HTTP. This paper introduces the control mechanism of HTTP-based botnet. In addition, this paper also analyzes a kind of botnet based on http protocol--Zeus. By setting up experimental environment, configuring Zeus tool and analyzing network traffic, we are able to understand the working mechanism of Zeus and the working principle of botnet based on HTTP protocol.
Web Service and Multi-Agent Based Fault Diagnosis System for MSW Incinerators
Authors: Wang Hai Rui , Li Ya , Jiang Ying
Published: March 2011

Based on Web Service and Multi-agents technology, this paper proposes to build a remote distributed fault diagnosis system for equipments of an incineration plant which requires real-time diagnosis in a widely distributed environment. The system is modeled and implemented by multi-agent technology and is composed of a large number of agents, which are deployed at different web sites. To extend system capabilities, a user can provide additional diagnosis procedures, diagnosis services or data services. Based on diagnosis goals, relevant agents are assembled together to form a remote collaborative diagnosis system. The system can be used in any incineration plants, which greatly simplifies the deployment and maintenance efforts.
Reduced Recoil Loop Area in Zr Doped α-Fe/Nd2Fe14B Nanocomposite Alloys
Authors: Zhang Peng Yue , Ge Hong Liang , Pan Min Xiang , Jiao Zhi Wei , Gong Jie , Wu Qiong , Fu Rui , Liu Ting Ting
Published: March 2011

The recoil behavior of melt-spun ribbons of Zr-doped α-Fe/Nd2Fe14B alloys has been investigated by analyzing hysteresis curves and recoil loops of demagnetization curves. A drastic increase of the coercivity Hc from 620kA/m to 855kA/m at room temperature by an addition of 1at.% Zr in α-Fe/Nd2Fe14B alloys has been observed. According to integrated recoil loop area, it is found that the maximum value of the integrated recoil area for Zr-doped sample (3.05 kJ/m3) is significantly lower (about 7 times) than that value for the Zr-free sample (20.9 kJ/m3). The reason of reduced recoil loop area in high coercivity α-Fe/Nd2Fe14B nanocomposite alloys by Zr addition was discussed in term of the process of irreversible magnetization reversal also.
Study of Intelligent Diagnosis System for Photoelectric Tracking Devices Based on Multiple Knowledge Representation
Authors: Hou Ming Liang , Liu Yu Ran , Xing Shu Bin , Su Li Yun
Published: March 2011

Aiming at the fatal flaws of the traditional diagnosis methods for the large-scale photoelectric tracking devices, such as poor stability and adaptive capacity, lack of inspiration and narrow domain knowledge of expert system, etc, more importantly, fundamentally improve the diagnostic efficiency and universality, in this paper, an intelligent mixed inference diagnosis expert system based on multiple knowledge representation and BP neural network is put forward. Firstly, some related key basic concepts and principles of intelligent fault diagnosis technology and several major applied diagnosis knowledge representation methods such as diagnosis fault tree, frame representation production rule and so on, were elaborated. Secondly, in view of high concurrency and relevancy of the system faults, a mixed reasoning mechanism combining BPNN and ES was researched. Finally, some interrelated essential implementation techniques, such as system architecture and VR technology, were also presented. Actual applications and experiments demonstrate that the proposed approach is robust and effective.
Selection and Fusion of Indicators for Network Security Situational Awareness
Authors: Fu Yan Ming , Chen Pan , Zhong Mi , Chen Wen
Published: March 2011

Network security situational awareness process collects security data from system log and security tools, extracts values of situational indicators and fuses these indicators values into security situation value. The security situational value reflects the all-side security situation of cyberspace. The selection and fusion of indicators become critical to precision of situation value. In the paper, an approach will be introduced to select indicators based on a hierarchical framework of network security situational awareness. These indicators will be fused into situation value depended on formulas that are deduced in accordance with the hierarchical framework.
Natural Attenuation of Diesel Fuels Contaminated Medium Sand with Different Water Content in Vadose Zone
Authors: Qu Zhi Hui , Zhao Yong Sheng , Jiao Li Na , Wand Bing , Jiang Hui Zhong , Ma Bai Wen , Sun Meng
Published: March 2011

Comparative experiment of 3 medium sand columns was executed to research the influence of water content on natural attenuation of diesel fuels contaminated vadose zone. The results showed that: The lower the water content, the stronger capacity of retarding diesel fuels was. After a diesel fuels spill, the average concentration of TPH were 57.7 g•kg-1, 47.55 g•kg-1 and 31.95 g•kg-1 in medium sand with different water content (0.66 %, 8.00 % and 15.22 %). Besides, the TPH found 90 days after the natural attenuation degradated by 38 % and 44.62 % 4 of the initial contaminant load of the medium sand with water content 0.66 % and 8.00 %. Additionally, the higher the water content, the larger the microbial activity of sand was. Biodegradation was the important mechanism for natural attenuation of diesel fuels.
The Research of Rigid Lapping Technique on Diamond Grating Ruling Tool
Authors: Jirigalantu  , Bayanheshig  , Qi Xiang Dong
Published: March 2011

One of the effective method of improving diamond tool life on rulling large diffraction gratings is developing precise double-cone edged on line edge transfering tool.But traditional died weight or manual lapping technique couldn't meet the precision requirement of on line edge transfering tool.So preliminary studied rigid lapping of diamond grating ruling tool.Choosing traditional BC6063 shaping machine and made a series of alteration on it, achieved the automation of lapping process of diamond grating ruling tool. Through lapping grating ruling tool and AFM measurement find that the surface roughness of tool is 1.51nm,the radius of tool edge is 160nm, edge quality is good enough,this verified the feasibility of rigid lapping of diamond grating ruling tool and lay the foundation for developing precision lapping machine.
Primary Industrial Verification of the Polymer Air Drawing Model for the Melt Blowing Nonwoven Process
Authors: Wu Li Li , Chen Ting
Published: March 2011

Nonwoven samples are collected from industrial equipments in four nonwoven factories. The processing parameters and equipment parameters are also obtained. The fiber diameters of the nonwoven samples are measured by using the image analysis method and compared with the predicted fiber diameters by solving the polymer air drawing model. The results show that the predicted fiber diameters coincide with the measured fiber diameter very well, which confirms that the polymer air drawing model is effective in predicting fiber diameters of nonwoven fabrics produced by industrial equipments in nonwoven factories. The results reveal the practical value of this theoretical research on the melt blowing technology.
Methods on Mechanism Research Based on Differential Geometry
Authors: Luo Jian Guo , Han Jian You
Published: March 2011

Based on the partial derivative of working space function, define the integral field of serial mechanism and parallel mechanism and serial-parallel mechanism respectively, judge conditions of singularityity including dead point and limit point with one and two and three input parameters obtained. Define the coupling degree of each input variable of mechanism use the second-order partial derivative of working space function, decoupling property between input variable identified by judging the coupling degree equal zero or not. Based on the realtionship between working space function and input variables, as well as relationship between input variables and time, three new index to weigh the kinematical properties of mechanism defined, positioning accuracy influence factor and dynamic response influence factor and sensitivity influencefactor included, its physical meaning and computation process presented as well, new direction provided for the research of kinematical properties of mechanism.
Hydrogen Storage of Carbon Nanotubes: Theoretical Studies
Authors: Wang Yan Jin , Wang Lie Yan , Wang Shu Bo , Wu Ling , Jiao Qing Ze
Published: March 2011

a self-consistent-charge density-functional tight-binding method was employed to study the electronic and atomic structures of full hydrogenation carbon nanotues (CNTs) which are relevant to hydrogen storage and device application. Intriguing trends of the geometrics, hydrogenation energy and energy gaps of full hydrogenation of carbon nanotubes as a function of the nanotubes diameter will also be described.
Laser Cladding of Zr55Al10Ni5Cu30/SiC Amorphous Composite Coatings on AZ91D Magnesium Alloy for Improvement of Corrosion Resistance
Authors: Huang Kai Jin , Liu Hou Guang , Zhou Chang Rong
Published: March 2011

To improve the corrosion property of magnesium alloys, Zr-based amorphous composite coatings have been fabricated on AZ91D magnesium alloy by laser cladding using mixed powders Zr55Al10Ni5Cu30/SiC. The microstructure of the coating was characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The corrosion resistance of the coatings was tested in 3.5wt.% NaCl solution. The results show that the coatings mainly consist of amorphous and different crystalline phases. The coatings compared with AZ91D magnesium alloy exhibit good corrosion resistance because of the presence of the amorphous phase in the coatings.
Oil Pollution and Study Progess on Removal Technology
Authors: Zhou Ji Hong , Xia Wen Xiang , Li Jin Cheng
Published: March 2011

The pollution accident caused by leak and discharge of the exploitation, smelting, use and transportation of oil, and oily wastewater discharge, wastewater irrigation, and volatilization of petroleum products, falling of product of incomplete combustion and so on can cause a series of problems of oil pollution. The damage, the removal methods of the oil pollution and the trends of technique development are introduced in this paper, and indicate that the high efficiency and low investment, resource and no secondary pollution will be the developing trend of oil removal technology in the future.
A New Structure of a Force Sensor Based on the Analysis of Electromechanical Impedance
Authors: Li Jing Fu , Long Zhi Jun
Published: March 2011

In this article a new structure of a force sensor based on piezoelectric materials is proposed. The design and choice of measuring principle is based on the direct piezoelectric effect, for the measurement of the dynamic force, and on the analysis of the electromechanical impedance technique, for measuring the static force. This technique is based on the measurement of modes of the structure. Indeed, the application of stress on the structure will cause changes in the modes of the structure and appearance of new eigenmodes. Thus far these methods should allow for measurement of static force applied.
Positive Exchange Bias in Tb/Cr Bilayers with TC < TN
Authors: Jiao Z. W. , Jiang W. D. , Chen M. G. , Yu S. J.
Published: March 2011

The exchange bias phenomena in Tb/Cr films, where the Curie temperature (TC) of ferromagnetic Tb is much less than the Néel temperature (TN) of antiferromagnetic Cr, are systematically investigated. For the Tb/Cr bilayers, the exchange bias field HE changes from negative to positive as the temperature goes up. The unusual behavior of HE(T) is due to the spin-density waves spin structure in the Cr layer. For the Tb/Cr/Tb/Cr film, however, HE is negative throughout the temperature range in our experiment and its absolute value decreases monotonously with the temperature, which is ascribed to the coexistence of the interlayer coupling between Tb layers and the interfacial exchange coupling between Tb and Cr layers.
Technical Characters and Influencing Factors for Precision of Rapid Prototyping
Authors: Yu Dong Man , Liu Jia Ping , Shang Chang Pei
Published: March 2011

Fabrication pioneer production with lower cost and shorter cycle is a major mission for an enterprise, and rapid prototyping is a digital manufacture technology based on discrete stacking, which can meet the requirement. Rapid prototyping technology can be used to machine complex physical part directly from CAD data without any cutter or technical equipments. The paper summaries the working principle and compares the application fields, machining cost and process parameters for four typical rapid prototyping technology. Finally, the significant performance of rapid prototyping for modern industry is discussed, and the merits and faults is analysed. The investigation is beneficial for choosing an optimal forming process in industry.
Detection of Relevance between Long-Term Different Professional Training and Brain Development Using EEG
Authors: Fan Li Li , Wang Wei
Published: March 2011

To analyse the effects of long-term different professional training on brain development. First, EEG singals of 12 students are collected under thinking different mental tasks, after long-term different professional training. Second, to use DFT to extract frequency features and then use BP network and 10-fold cross validation to classify. The classification accuracy can amount to 90 percent around. The result indicates that EEG signals can change specially under special mental tasks, after long-term different professional training. It can reflect the different brain development patterns after different professional training directly.
Characteristic Structures on Film Induced by Femtosecond Laser Pulse Irradiation
Authors: Yuan Dong Qing , Xu Jian Ting
Published: March 2011

With femtosecond laser pulse (130 fs, 800 nm, 1 kHz pulse repetition frequency) irradiation on Au/Cr film stack, several nanostructures were obtained. The influence of laser parameters such as fluence(0.5J/cm2,2J/cm2) and the number of pulse were investigate. With single pulse irradiation, the nanoline and periodic ripple structures were obtained for the pulse fluence of 0.5J/cm2 and 2J/cm2, respectively. The formation mechanism of those nanostructures were discussed.
Research of Advancing Mechanism with Three Circular Arc Equidistant Profile Connection of Drill
Authors: Luo You Xin , Li Heng Shu , Wen Hui Jun , Zhou Yu
Published: March 2011

Study the existing advancing mechanism of drill, analyze the disadvantage of the flat key and the spline, and the feature of the three circular arc equidistant profile connection. Taking the common chain advancing mechanism as basis, using three circular arc equidistant curve to make sprocket bore and intermediate shaft external cylindrical fit constitute the three circular arc equidistant profile keyless connection. Then introduce the advancing mechanism with three circular arc equidistant profile connection of drill. Applying Solidworks2010, we created the three-dimensional modeling of the mechanism, which lay the foundation for the further research and application. The new type advancing mechanism has many advantages, such as automatic-centering accurately, convenient in assembling and disassembling, eliminating the stress concentration, simplicity of the fit section，transferring bigger torque, suitable for heavy-loaded rock drill machine.
Analysis of Hot Leveling Deformation Rate on the Residual Stress of Steel Plate
Authors: Chen Ji Ping , Qian Jian Qing , Li Sheng Zhi
Published: March 2011

A 3D thermo-mechanical coupled model of hot leveling and cooling process of steel plate with nine rolls has been conducted with the aid of commercial non-linear FEM software. The effects of four hot leveling deformation rates on the transversal and longitudinal residual stresses of steel plate in the condition of same initial temperature distribution pattern has been analyzed. Different plastic deformation rates are obtained through the reduction change of No.2 leveler. The transversal and longitudinal residual stress distributions at different parts of steel plate are also studied. The results show that the transversal and longitudinal residual stresses increase with plastic deformation rates through hot leveling and cooling. The residual stress distribution patterns at various positions of the steel plate in the conditions of different plastic deformation rates can be confirmed quantitatively, which can provide guidance to practical determination of hot leveling plastic deformation rates.