bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Local Dry Welding of 304 Stainless Steel in Nuclear Power Stations Repair
Authors: Zhou Can Feng , Jiao Xiang Dong , Zhu Jia Lei , Gao Hui , Shen Qiu Ping , Yu Yan , Zhang Jun Bao
Published: February 2012

Local dry welding is an important water welding method with special advantages for good flexibility in nuclear power stations repair where operation spaces are usually very limited, and it can be applied perfectly by simple integration of a lot of welding processes with shielding cup. An underwater welding system chamber was built, which is mainly comprised of an underwater welding test chamber, and a hydraulic driven underwater welding device. Shielding gas is inflated to the small compacted cup to drive water and protect arc and weld pool. At shallow water of 100mm,Pulsed MIG tests were carried out to investigate parameters which are related to welding process of 304 stainless steel cladding layers. Welding tests at different depth indicates that although profiles of welds produced both at pressures of 5 meters water depth and at pressures of 15 meters water depth are perfect, but cladding layer at 15 meters is more narrow and more high
Design of Ultra-Wideband Bandpass Filter Based on Composite Right/Left Handed Transmission Line
Authors: Xiao Bing Gang , Ye Peng , Xie Zhi Yi , Liu Han
Published: February 2012

As one of the most important devices in the ultra-wideband (UWB) wireless communication system, UWB filter has received more and more attention with the rapid development of UWB wireless communication technology. In this paper, an ultra-wideband bandpass filter based on composite right/left handed transmission line (CRLH TL) is designed. The filter are simulated and optimized by the industry-standard simulation tool HFSS to examine the correctness and effectiveness of the design with the simulated scattering parameters S11 and S21.
Corrosion Resistance of KH-550 and KH-567 Composite Silane Films on Cast Aluminum Alloy
Authors: Zhou Qi , Sun Guang Xia , Zhao Ping , Liu Hong Yan
Published: February 2012

The silane films are fabricated by dipping cast aluminum alloy in silane solution, then curing films. The corrosion resistance of single silane film, composite silane film is compared with phosphating film through acid dropping test, salt water immersion test and electrochemical impedance test (EIS), the results shows that the silane films are obviously superior to the phosphating films in terms of the corrosion resistance of acid solution and neutral salt solution, particularly the corrosion resistance of composite silane films is much better than sigle silane films; corrosion polarization curves show that the corrosion tendency of KH550+KH567 composite silane film is minimum, corrosion rate is yet minimal, corrosion process of this silane films is controled by diffusion step. The corrosion process of uncoated aluminum substrate, KH550 silane films, phosphating films are controlled by electrochemical step. The impedance of phosphate films are lower than the silane films. Appropriate silane treatment can effectively improve adhesion between the coating and the Al substrate. The adhesion between silane film and paint film is firmer than the phosphate film, so silane film is an excellent replacement to phosphate film for painting pre-treatment.
A Theory Study for Hydraulic Component by Finite Element Analysis Technology
Authors: Zhu Cheng Jun , Li Xiao Jing
Published: February 2012

Finite element analysis is an advanced technology, by which a complicated engineering problem can be solved by theory analysis. Firstly, we build a 3D model of a hydraulic component under 3D software environment. Then the component model is load into FEA module. Subsequently, the model is meshed and set the outer loading. At last, the analysis step is conducted and get the result. The result showed the optimized structure of component. It assumed that the study result have some value for further improved design
FPGA Implementation of Real-Time Adaptive Bidirectional Equalization for Histogram
Authors: Zhao Yu Qian , Li Zhi Gang
Published: February 2012

According to the characteristics of infrared images, a contrast enhancement algorithm was presented. The principium of FPGA-based adaptive bidirectional plateau histogram equalization was given in this paper. The plateau value was obtained by finding local maximum and whole maximum in statistical histogram based on dimensional histogram statistic. Statistical histogram was modified by the plateau value and balanced in gray scale and gray spacing. Test data generated by single frame image, which was simulated by FPGA-based real-time adaptive bidirectional plateau histogram equalization. The simulation results indicates that the precept meet the requests well in both the image processing effects and processing speed
The Apply of Rough Set Theory Based on Parameter Optimization in Remote Numerical Control Milling Machining
Authors: Li Hu , Chen Ya Dong , Yang Jian Yu , Wang Wan Shan
Published: February 2012

Based on the response style of Custom/Server, the optimization model system of milling machining technique has been built up, in which the current network source, technology and the Rough Set theory was utilized. The purpose of the system is to get the maximum productivity under the conditions that the present face roughness Ra and dimension precision must be assured. The results shows that the Rough Set can be used to get the formula when the sample information is not of precision caused by the overlap of machining parameter class. The formula induced from Rough Set theory can be used to optimize the parameter of milling machining from the technique department distributed in different location by internet
Research of Appropriateness of Residence Outer Wall Thermal Insulating System in New Rural Construction in Zhejiang
Authors: Zhu Yan , Ge Jian , Ying Dan Hua
Published: February 2012

Buildings have consumed around 1/4-1/3 of the country’s energy consumptions, of which the envelope structures, especially the outer walls, takes the largest percentage. The pilot program for external thermal insulation in new rural construction has commenced along with full implementation of outer wall energy saving and thermal insulation in Hot Summer and Cold Winter Zone. The program has proved the thermal insulating technology which is characterized by broad applicability, strong operability, reliable thermal insulating performance and low comprehensive cost, is a set of thermal insulating technology compatible with the level of rural economic and technical development in China.
The Discharge Characteristics of PEO Films in K2ZrF6 with H3PO4 Electrolyte
Authors: Fu Wen , Wang Li , Chen Li
Published: February 2012

The discharge characteristics of the potassium fluorozirconate electrolyte during plasma electrolytic oxidation process were investigated. Phosphoric acid was applied as additives. Ceramic films were prepared on magnesium alloy in electrolytes with different content additives under constant voltage. The effect of additives on the pH of the electrolyte and the dissolution of the substrate were investigated. It was found that the additives could influence the pH and dissolved magnesium ions effectively.
Applications of Yang-Fourier Transform to Local Fractional Equations with Local Fractional Derivative and Local Fractional Integral
Authors: Zhong Wei Ping , Gao Feng , Shen Xiao Ming
Published: February 2012

Yang-Fourier transform is the generalization of the fractional Fourier transform of non-differential functions on fractal space. In this paper, we show applications of Yang-Fourier transform to local fractional equations with local fractional derivative and local fractional integral
Pipeline Leak Monitoring System Research Based on Characteristic Curve
Authors: Xu Lin , Zhang Qin , Yu Yi Fan
Published: February 2012

To ensure the safe operation of oil and gas pipeline, designed based on the characteristic curve of pipeline leak monitoring system. Detailed real-time data access methods and processes, described RBF neural network algorithms and theory for identifying conditions signal , discussed the pipeline characteristic and device characteristic curve , described the principle to determine the pipeline leak, while the formula for calculating the relevant instructions to do the expansion, through the digital platform interface to obtain a snapshot data improves the reliability and accuracy of the original data. Field tests proved the system's good performance for other crude oil pipeline leak detection to provide guidance.
Hilbert-Huang Transform Based Intrinsic Mode Functions Energy of Spike Wave
Authors: Zhu Jin De , Lin Chin Feng
Published: February 2012

The Hilbert-Huang transform (HHT) is a popular time-frequency analysis methods employed to decompose electric signals into intrinsic mode functions (IMFs). In this paper, we use HHT analysis to discuss the time-frequency characteristics of a spike wave for epilepsy symptoms. The differences between the IMFs and IMFs-energy distributions for the spike and normal waves are discussed. The ratios of the energy of the spike wave, IMF1 and the residual function to the total energy are 11.27% and 75.84%, respectively. In contrast, the ratios of the energy of the normal wave, IMF3, IMF4, and the residual function to the total energy are 10.99%, 43.31%, and 37.69%, respectively.
Data Mining Technology Applications in Tobacco Commercial Enterprise
Authors: Mo Yi Min , Tong Xin Shun , Yang Li Hua
Published: February 2012

The wide application of information technology has greatly improve the work efficiency but also caused a large and complex data accumulation. How to get the valuable information from vast amounts of data are the key issues in data processing. This paper studied the application of data mining technology in tobacco commercial enterprise from three aspects: market demand forecasting, customer relationship management and historical data processing. Analysis of how to use data mining technology to make full use of large amounts of data to provide a basis for tobacco commercial enterprise’s decision-making.
Filterbank and DFT Based Fast Parallel Discrete Gabor Transform for Image Representation
Authors: Gu Juan Juan , Tao Liang
Published: February 2012

Fast parallel algorithm for the 2-D discrete Gabor transform (DGT) is presented based on 2-D filterbank. A 2-D analysis filterbank is designed for the 2-D DGT. The parallel channels in the filterbank have a unified structure and can apply the 2-D inverse fast discrete Fourier transform (IFFT) algorithm to reduce the computational load. The computational complexity of each parallel channel is very low and is independent of the oversampling rate. Thus, the proposed parallel algorithm is attractive for real time image processing.
Phosphorus in Drinking Water and it's Removal in Conventional Treatment Process
Authors: Jiang Deng Ling , Chen Yan Hua , Ni Guo Wei
Published: February 2012

Chemical forms of phosphorus in source and treated drinking water were studied in this paper. Removal of total phosphorus (TP) and microbially available phosphorus (MAP) by conventional treatment process of drinking water was examined. The results showed that particulate phosphorus constituted of most TP in source water. Content of total soluble phosphate (TSP) was about 30% of TP. Soluble reactive phosphate (SRP) can be measured in a few months during a year and its content was very low. Content of MAP was higher than content of TSP in source water, which showed that microbe can also use particle phosphorus. Ratio of TSP to TP increased evidently in treated water. This demonstrated that removal of TSP was more difficult than particulate phosphorus in conventional treatment process for drinking water. Removal of TP and MAP in conventional treatment process of drinking water was effective, with averaged removal efficiency of 66% and 69%, respectively. Coagulation-sedimentation and filtration removed TP efficiently. Enhanced coagulation may increases removal efficiency of MAP. Lower content of MAP can control biostability of drinking water.
2D Contour Output Study for Substation Ambient Noise Based on the Surfer
Authors: Yu Yi Fan , Xu Lin , Zhang Jian
Published: February 2012

According to the software of "environment noise analysis and optimization control simulation system for substation", calculate the plane grid data. Based on the function of 2D Contour automatic generation of Surfer, the distribution of noise is able to be demonstrated in 2D contour, the higher noise values has its greater colors. That provides technical support for noise control in substation.
Study on Phosphorus and Bacterial Regrowth in Drinking Water
Authors: Jiang Deng Ling , Zhang Yu Min , Zheng Ning
Published: February 2012

Phosphorus limitation on bacterial regrowth was studied in source water, water treatment process and water distribution system of J Water Supply Plant in T city, by modified AOC method and MAP analysis. Based on the study, the follows can be concluded: ① MAP(Microbially Available Phosphorus) concentration was higher in source water and water treatment process, which was 5～38µg PO43－-P/L. However in water distribution, MAP concentration was lower, which was less than 5µg PO43--P/L. ②Coagulation and sedimentation can remove MAP efficiently. 31%～68% of MAP can be removed in these process. ③ In source water and water treatment process, there was no evident difference between AOCpotential, AOCp and AOCnative. So assimilable organic carbon (AOC) was the most important factor of bacterial regrowth. In water distribution system, the concentration of AOCpotential and AOCp were 2～8.7 times of the concentration of AOCnative. So phosphorus limited bacterial regrowth.
System Dynamics Model of Urban Comprehensive Transportation System and its Control Strategy Simulation
Authors: Huang Quan Li , Yue Jing Tao , Ding Yu Lan
Published: February 2012

According to the establishment of the simulation model about urban integrated transportation system, this paper established kinematics model of the urban integrated transportation system by the core application of system dynamics theory, technical methods and special tools. This model provided a scientific basis and technical methods to intelligent control and Optimizing the decision-making for urban integrated transportation.
Asymptotic Properties for Estimators of Hazards Model
Authors: Liu Huan Bin , Ye Ying
Published: February 2012

In this paper, the additive-multiplicative hazards model for gap time data of recurrent events is investigated, and the estimating equation approach is presented for inference about regression parameters. Both asymptotic and finite sample properties of the proposed parameter estimates are established
Global Existence and Blow-Up of Solutions for a Porous Medium Equation
Authors: Gao Yun Zhu , Meng Xi , Gai Hong
Published: February 2012

In this paper, a porous medium equation with local source and nonlocal boundary condition is studied. By using the fixed point theorem and comparison principle. The global existence and blow-up of solutions are obtained .
Modeling Simulation and Optimization Study of Fresh Seafood Inventory Ordering Policies Based on Witness
Authors: Tan Zhao Hua , Zhang Ya Hui
Published: February 2012

It is possible to reduce the inventory cost by choosing the proper ordering policies. Considering the distinctive nature of perishable products, it is much more important to control the inventory levels properly. In this paper, we select the fresh seafood as the object of our study and build a simulation model based on Witness to analyse the inventory cost. In the model, we consider constraint conditions such as replenishment lead time, price discounts and so on. We also analyse the variation trends of total inventory cost together with the changes of parameters in three models with different ordering policies and obtain the parameters of the optimum policy by comparing the cost in that three models.
Research and Development of Engineering Graphics Virtual Laboratory
Authors: Lin Qing Fu
Published: February 2012

In introducing the principles and characteristics of virtual laboratory，according to the characteristics and laboratory requirements of engineering graphics course, combined with the functional requirements of virtual laboratory, using three-Browser / Servers architecture, creating a system framework of virtual laboratory; designed various functions to meet engineering graphics virtual laboratory teaching experiments requirements, have been optimized the selection of key technologies and application of Engineering Graphics Virtual Laboratory, lay the foundation for the further development of engineering graphics virtual laboratory.
Research on Kalman Particle Filter-Based Tracking Algorithm
Authors: Hou Yi Min , Zhao Yong Liang , Sun Ting Ting , Di Jian Ming
Published: February 2012

In the application of computer vision technique, target tracking in image sequences was an important research subject. This paper describes the particle filter and introduces a tracking algorithm based on Kalman particle filter. The algorithm improves the traditional particle filter, whose non-linear and non-Gaussian may result in non-robustness of tracking process. Kalman particle filter use kalman filter to predict the particle’s state and generate the proposal distribution, the state of each particle evolved by the Kalman prediction equations and update equations, increasing the robustness of tracking. Experimental results show that the proposed method in comparison with the traditional particle filtering can be more accurate on tracking and ensure the robustness of performance in a complex environment.
The Effect of Inclined Arch Rib on the Dynamic Stability of Leaning-Type Arch Bridge under Earthquake
Authors: Guo Yu Zhu , Liu Ai Rong , Yu Qi Cai
Published: February 2012

Incorporating the Lyapunov theory of motion stability, the elastic dynamic stability program of a leaning-type arch bridge with 120m span is worked out via the modified freeing time method. The dynamic eigenvalue-time history curve and dynamic buckling modes are presented, and the effect of inclined arch rib on the dynamic stability of leaning-type arch bridge is analyzed and compared under the seismic exercitation in the longitudinal, transverse and vertical directions of the bridge. The results show that all of the dynamic buckling modes are out-plane instabilities when the effect of inclined arch rib is not considered, while dynamic stability coefficient increases by 6%, 56% and166% respectively when the effect of inclined arch rib is considered.
An Intelligent Control System for Edge Position Deviation of Narrow Fabrics
Authors: Luo Wei Ping
Published: February 2012

Focused on the S-shape deviation problem in the narrow fabric production process, this paper introduces an intelligent control system with DC servomotor as the actuator for an intermediate guide roll system. To improve the dynamic performance of the deviation control system and solve the motor vibration problem, the deviation control algorithm is proposed, which is related to intelligent PD feedback control combined with the feed-forward regulation for the system deviation, and its MatLab simulation results show its good performances and advantages. Furthermore, a technical approach for the deviation controller using DSP processor chip TMS320F2812 is presented. The system is applied in the intermediate guide roll system, and the application result indicates that the system is characterized by fast response and steady operation and it is a good solution for the motor vibration.
Formative Arts and Landscape Application of European Hornbeam
Authors: Zhu Zun Ling , Lin Qing Mei , Xu Yuan Yuan
Published: February 2012

This paper introduces the ornamental characteristics and ecological habits of European hornbeam, concretely expounds the formative arts of European hornbeam and its application in landscape, the formative arts of European hornbeam include natural type, geometric type, monopode tree type, hedges, weave and binding type and puts forward the problems that we should pay attention to in configuration, and looks forward to further expanding the application in landscape of this plant.
New Delay-Dependent Robust Stability Criterion for Uncertain Stochastic Systems with Time-Varying Delays
Authors: Wang Cheng
Published: February 2012

The problem of delay-dependent robust stability of uncertain stochastic systems with time-varying delay is discussed in this paper. Based on the Lyapunov-Krasovskii theory and free-weighting matrix technique, new delay-dependent stability criterion is presented. The criterion is in terms of linear matrix inequality (LMI) which can be solved by various available algorithms.
Research and Application of Fuzzy Control in Boiler Combustion System Based on ACA
Authors: Wu Chen , Lou Guo Huan
Published: February 2012

In the complex control processes of the industrial boiler combustion system with non-linear, time-varying and multivariable, aim at the original control parameters fixed, slow response, delay regulation and other problems, this paper introduces a control method that combines ant colony algorithm with fuzzy PID control, improves the design of fuzzy control rules table and optimizes the PID control parameters. Simulation results show that this control scheme is superior to conventional PID control and fuzzy PID control.
Study on Mass-Transfer Kinetics of Nd by 2-Ethylhexylphosphonic Acid Mono-(2-Ehylhexyl) Ester in the Presence of a Complexing Agent
Authors: Chang Hong Tao , Li Mei , Liu Zhao Gang , Hu Yan Hong , Zhang Fu Shun
Published: February 2012

The Nd(III) extraction kinetics by 2-ethylhexylphosphonic acid mono-(2-ethylhexyl) ester (HEH/EHP) in the presence of a complexing agent acetic acid(HAc) has been investigated using constant interfacial cell. The kinetics mechanism and extraction rate equation were achieved by the studies on the effect of stirring rate, temperature and specific interfacial area on the rate of extraction. The effect of temperature on the kinetics was analyzed, the value of the apparent activation energy was calculated as 9.24 kJ/mol, and it was found that the extraction process was a diffusion-controlled kinetics process.
Characterization of the Quarternary Wavelet Wraps with Multi-Scale Factor and Applications in Physics
Authors: Gao Hai Lin
Published: February 2012

In t In this article, we introduce a sort of vector-valued wavelet wraps with multi-scale dilation of space L 2(Rn, Cv) , which are generaliza-tions of multivariaale wavelet wraps. A method for designing a sort of biorthogonal vector-valued wavelet wraps is presented and their biorthogonality property is characterized by virtue of time-frequency analysis method, matrix theory, and operator theory. Three biorthogonality formulas regarding these wavelet packets are established. Furtherore, it is shown how to obtain new Riesz bases of space L 2(Rn, Cv) from these wavelet wraps.
The Features of a Class of Orthogonal Multiple Vector Ternary Wavelet Wraps and Applications in Physics
Authors: Wu Xin Li , Chen Qing Jiang
Published: February 2012

Wavelet analysishas been a powerful tool for exploring and solving many complicated problems in natural science and enginee-ring computation. In this work, the notion of orthogonal matrix-valued trivariate small-wave wraps and wavelet frame wraps, which are generalization of univariate small-wave wraps, is introduced. A new procedure for constructing these vector trivariate small-wave wraps is presented. Their characteristics are studied by using time-frequency analysis method, Banach space theory and ﬁnite group theory. Orthogonal formulas concerning the wavelet packs are established. The biorthogonality formulas concerning these wavelet wraps are established. Moreover, it is shown how to draw new Riesz bases of space from these wavelet wraps.
Pedestrian Detection Using Frame Differential Method and Improved HOG Feature
Authors: Meng Xiang Zhan , Xing Jian Ping , Wang Yong Zhi , Jing Xiao Bing , Wu Yong , Gao Liang
Published: February 2012

To detect moving pedestrians in video surveillance rapidly and accurately, the pedestrian detection process is divided into two stages: motion detection stage and classification stage. In the motion detection stage motion detection is exploited to rapidly get the motion regions. By getting these interesting regions which may contain pedestrians, the regions used for next stage are greatly reduced and the whole pedestrian detection speed is improved. In the classification stage HOG features are used to classify interesting regions into pedestrian region and non-pedestrian region. In the motion detection stage, an improved frame differential method is used. The threshold changes with the pixel value changes and can adapt to the environment change, such as background difference, lightness change and motion speed. In the classification stage, an improved HOG method is used. Multi-scale HOG features are used to get better performance and Adaboost algorithm is used to train cascaded classifier for a higher detection speed. To evaluate the performance of our method, we test it on several video sequences taken from different scenes. Experiment results show that our method achieves good performance with an average over 90% detection rate. And our method can process over 20 frames per second and satisfies the demand for real-time task
A Preliminary Study of the Reform of Water Conservancy Hydroelectric Engineering Major in Education and Course
Authors: Qin Peng , Wang Ying Hua , Qin Zhi Hai
Published: February 2012

The water conservancy hydroelectric construction engineering major is establishing an operate in the reform in education and the course, should develop craft advantage, the tapping has the development scheme of the talented person of oneself special feature and quickly takes occupation capability as the course system of nucleus to construct and reform to practice teaching system, intensifies a student to practice to begin capability development and arouses a completely developing of the reform in education; Set up to practice the teaching mass guarantee system, intensify the construction of solid Xun matrix, the reform fulfillment teaching investigates a method, values to produce to learn wedge bonding and speeds the construction of high character teacher's troops. The teaching plans the reform of teaching mode talented person the key of development mode reform at, come out an and profession close correlation, foster a deluxe application person just new road son
The Researches on the Standardization of Petroleum Exploration and Development Structured Data
Authors: Li Cheng Fang
Published: February 2012

On account of the complicated management, complex business, intricate data, complex appliance of the process of the oil exploration and development, the condition that the disunity, imperfect of the data standard of the oil exploration and development, and the ineffective share of the data, the plan of standardized data structure has been put forward in refer to the international standard of POSC and PPDM. The main aim of this plan is to solve the problem of the disunity of the structured standard between different major and different oil company. The plan will follow the principle of the business drive and begin from the production traffic flow, the analysis of the data traffic flow and through the standardization of the name, meaning, type, dereferencing of the data to form an open data dictionary for oil exploration and development. The dictionary will be public by some effective organization in time, which can increase the sharing and authority of the structured data.
Research on Classification Algorithm Based on Fractal Growth
Authors: Zhao Li , Li Wei Dong
Published: February 2012

Pattern classification is a key technique in fields like artificial intelligence, computer vision, machine learning, etc.. To deal with this problem, this paper introduces a classifier based on fractal growth. A fractal growing algorithm using a cost calculating method is presented. Along with the fractal growing, a feature space is divided into several areas corresponding to different classes. And then, a classifier based on fractal growth has been realized. The detailed design is described in the paper. The classifier was tested with the circle-in-the-square problem and a high accuracy rate was achieved.
Suggestions in Ensuring the Safety of UPS Power Supply
Authors: Dai Xue Mei , Fu Yu
Published: February 2012

UPS (Uninterruptible Power System) is an energy storage device, and it is also a uninterruptible power supply which contains the inverter as the main component and works at the constant voltage constant frequency. it is playing an increasingly important role. Some suggestions are mainly proposed to ensure the safety of UPS power supply system in this paper, which make the UPS power supply system really play the role of escort in the practical application.
The Influence Factors of Wood Dielectric Constant
Authors: Zhang Xiang Ling , Cai Ying Chun , Zhou Qiao Fang , Zhao Jing Yao
Published: February 2012

Dielectric constants of Larix gmelinii were measured at 1.1 MHz to 25 MHz (near to frequency of high-frequency heating ), from oven-drying condition to 100％ moisture content, with longitudinal, radial and tangential directions measuring in the experiment. The results showed that: the relationship between MC and dielectric constant can be described as exponential relationship from MC=8% to the fiber saturation point (FSP), above FSP it is linear relationship. The dielectric constant showed decreasing trends when frequency raised. When f﹥10MHz change trend is slow. Permittivity across longitudinal direction is bigger than that across transverse direction，but the difference across tangential direction and that across radial direction is small.
Application Fuzzy Simulation to Evaluate Option
Authors: Liu Shu Xia , Chai Zhao Hua , Hu Jian Sheng , Zhao Zhuo
Published: February 2012

The current work attempts to evaluate the option from a novel perspective, fuzzy simulation technique, one of the evolutionary computational approaches. This paper proposes a random fuzzy jump-diffusion option pricing model, where the volatility and the jumps intensity are depicted as fuzzy variables, respectively. Fuzzy simulation technique is designed to estimate the membership degree and the expected value of the option. The rough figures of the expected value of option can be obtained. Finally, the application of the methodology is demonstrated by a numerical example.
Research on Technology of Image Restoration with Analysis of Scientific Data Materials
Authors: Li Xiao Guang , Duan Xiao Ming
Published: February 2012

Abstract: This paper studied the NAS-RIF method with analysis of scientific materials, but its performance is poor when the SNR is low, so we proposed an improved method using higher order statistics and image segmentation technology with analysis of scientific data materials. Experiment results shows that the new method with analysis of scientific materials can get a good performance, even under the existing noise.
On-Line Bayesian Classifier Design for Measurement Fusion
Authors: Fong Li Wei , Lou Pi Ching , Lin Kung Ting
Published: February 2012

A neural-network-based classifier design for adaptive Kalman filtering is introduced to fuse the measurements extracted from multiple sensors to improve tracking accuracy. The proposed method consists of a group of parallel Kalman filters and a classifier based on Radial Basis Function Network (RBFN). By incorporating Markov chain into Bayesian estimation scheme, a RBFN is used as a probabilistic neural network for classification. Based upon data compression technique and on-line classification algorithm, an adaptive estimator to measurement fusion is developed that can handle the switching plant in the multi-sensor environment. The simulation results are presented which demonstrate the effectiveness of the proposed method.
Configurable Core of ECC over GF(2m)
Authors: Jiang Hong Bo , Feng Xin Yu
Published: February 2012

Elliptic Curve Cryptosystem is a research focus of public key cryptography. The advantage of ECC is described in this paper, on the basis of which the architecture of the Elliptic Curve Cryptosystem is determined. We design hardware and implement addition, square, multiplication and inverse over GF(2m)using Verilog. On the basic operation, we design the scalar multiplication and accomplish the final elliptic curve encryption and decryption function. At last, we test the design in this paper with the verification model and platform are constructed and count coverage metrics ratio for it. The coverage metrics ratio is 100% and verification results is right. The core is synthesized and simulated on timing. The gate-level simulation results is the same to functional results. It’s work frequency is 125MHz.
The Motion Planning Based Genetic Algorithm for Wheeled Mobile Manipulator
Authors: Zhang Shuo Sheng , Liu Na
Published: February 2012

The motion planning problem of wheeled mobile manipulator is formulated as an optimal control problem, and optimal criterions for point-point planning and multi-point planning are given, then genetic algorithm to solve the optimal problem is described. The simulation examples are accomplished for point-point planning and multi-point planning and the results show the method is effective.
The Change of Residual Stress with Two-Wire Spacing of Twin-Wire Submerged Arc Welding
Authors: Yang Xiu Zhi , Ding Wan Jing , Jiang Jin Yu , Xiao Xin Hua
Published: February 2012

Finite element software MSC.MARC was used to analyze the residual stress of high-strength low-alloy steel suffered twin-wire SAW. The numerical simulation of the residual stress field with different twin-wire spacing was conducted. The residual stress test results under twin-wire SAW at twin-wire of 50 mm welding were compared to the simulation results, which verified the numerical simulation. The results showed that in the single-channel and twin-wire welding, the largest welding residual stress of the joints is located near the weld toe. At certain wire distances (20-100 mm) in the twin-wire welding process, increasing distance only minimally reduces welding residual stress. Thus, the effects of residual stress on two-wire spacing have been neglected in studies on the twin-wire welding process,More studies should focus on the impact of the performance and forming of the weld joint.
The Relationship between SOUR and some Process Parameters in Activated Sludge System
Authors: Wang Xue Feng , Jia Yu Gui , Li Dan
Published: February 2012

Specific oxygen uptake rate (SOUR), which reveals the status of activated sludge physiology and substrate metabolism by detecting respiration rate of microorganisms, is an important parameter reflecting the biological activity of activated sludge. Through the measurement of SOUR in SBR system, the SOUR variation and the correlation between SOUR and pollutant concentrations and control parameters in SBR process were studied. The result showed that SOUR can effectively reflect the biochemical reaction course of SBR process. There was better correlation between the SOUR and DO, ORP and pH in SBR process.
Apply Grey Theory to Determine the Parameters of Welding Process by Using Arc Signals
Authors: Wang Wei Feng , Dai Ke Jie
Published: February 2012

Many researchers have developed a wide range of mathematical method for predicting the weld strength by arc signals, However, These mathematical method are so complex and no good use according to the complexity of welding. This paper addresses grey analysis to analyze the arc signals. Results indicate the pulse voltage is the most important factor to the weld strength, optimal parameters can be found and the experiment also proved the conclusion. It was found that grey relational analysis is a good tool to find the most important factor to the weld strength from the processing parameters, which can instruct the actual production.
Energy Storage Technologies in Renewable Energy Electricity Generation System
Authors: Cao Rui , Yang Zi Long
Published: February 2012

Today，there is a continuous need for more clean energy, this need has facilitated the increasing of distributed generation technology and renewable energy generation technology. In order to ensure the supply of renewable energy generation continuously and smoothly in distributed power generation system, need to configure a amount of energy storage system for storing excess power generated. This article outlines some energy storage technologies which are used in power systems in the current and future, summarizes the working principles and features of several storage units, provides the basis for the design of energy storage system.
Research on Improving Take-Off Characteristics of Fly Wing with a New Constitution
Authors: Mo Song , Huang Jun , Chai Xue , Zhao Quan
Published: February 2012

The take-off control of UAV with fly wing layout is limited by its relatively lower pitch moment. This paper gained the state parameters of a few groups of taking off model by means of numerical simulation. The influence of different models on take-off distance, take-off angle of attack (AOA), take-off safe speed and c.g. location was then analyzed. Based on the analysis, a new fly wing constitution was designed and the corresponding take-off control scheme was suggested as well. Finally, the flight test results shows that this fly wing constitution can gain better take-off control characteristics.
A Real-Time Visualization Method of Objects Using Grid Coding Based on Surface Orientation and Structure
Authors: Xu Lin , Yan Sheng Yuan
Published: February 2012

A systematic approach is introduced to infer surface structure of visible object surfaces using grid coding in this paper. The visualized object, which has surface of a terrain-like shape, is assumed to derive from data field of gird points defined by orthogonal division and data acquisition. Parametric surface is used to spatially represent the data for analysis. Central difference technology is presented to tessellate the curved surface and generate view-dependent multi-resolution models, which has excellent performance in real-time applications. Besides, an algorithm for data pre-processing is presented. The approach presented here also adapts to data acquired in realistic scene, which can be a virtual reality application. Comparing to previous methods, the method presented in this paper provides good flexibility in various applications. It works well in real-time graphic application while has good visual quality.
A Study on the Convergence Adaptor Using Plug Computer
Authors: Yun Jung Mee , Kim Dae Hwan
Published: February 2012

Recent studies have shown that the Internet-related energy consumption represents a significant, and increasing, part of the overall energy consumption of our society. Therefore, it is extremely important to look for energy-efficient Internet applications and protocols. For EPON, research on the development of protocols for higher energy efficiency at the PHY/MAC layers and the enactment of standards, and the improvement of energy efficiency of EPON devices is being conducted, while for networking equipment such as routers and switches and IDCs, research on saving the energy consumed by devices and the management of energy efficiency using power monitoring, cooling devices and metering technologies is being conducted. Against this backdrop, this study is aimed to develop methodology for the improvement of network energy efficiency in existing home/ small and medium-sized office network environments and to develop, test and evaluate an energy saving prototype for Convergence Adaptor
A High Speed 8B/10B Encoder/Decoder Design Based on Low Cost FPGA
Authors: Chen Zhang Jin , Zhong Guo Hai , Bi Zhuo
Published: February 2012

A high speed 8B/10B Encoder/Decoder is presented in this paper. The Encoder/Decoder is based on Altera’s low cost FPGA Cyclone family. The Encoder/Decoder includes parallel pipeline structure. The Encoder/Decoder is applied to the Serializer/Deserializer (SERDES) of high-speed serial bus. The Encoder/Decoder is synthesized and simulated by Quartus II 9.1. The synthesis and analysis results show the maximum frequency is more than 359MHz. The timing simulation results show the clock frequency is more than 125 MHz. The single channel data rate of serial bus can get to 1.25Gbps. The proposed Encoder/Decoder can meet the requirements of most high-speed serial bus.
Performance of the Active Microring Resonator Based on SOI Rib Waveguide
Authors: Mardiana B. , Hanim A.R. , Hazura H. , Shaari S. , Susthitha Menon P. , Huda Abdullahf
Published: February 2012

Micro-ring resonator based on silicon-on-insulator (SOI) has been extensively studied due to its many advantages, thus promising to improve the optoelectronic integrated circuit performance. This paper highlights the study of the free carrier injection effect on the silicon rib waveguide with p-i-n diode structure integrated in the SOI micro-ring resonator. The free carrier concentrations have been modulated by the electrical signal that can cause change of refractive index of the micro-ring resonator. The device performances are predicted by using numerical modelling software 2D SILVACO and Finite Difference Time Domain method simulation software RSOFT. The results show the change of refractive index is maximized at a greater applied voltage. A shift in resonant wavelength of around 6.7 nm was predicted at 0.9V with 1.14x10-3refractive index change. It is also shown that 8.5dB change of the output response obtained through the output.
Slicing Object-Oriented Programs with Exception Handling Structures
Authors: Zhao Xue Feng , Jiang Shu Juan , Zhou Qi
Published: February 2012

Exception propagation affects the dependences of an Object-Oriented program, which must be taken into account when calculating program slicing; otherwise the result may be not precise. This paper proposes an approach to construct the extended interclass dependence graph and the Object-Oriented system dependence graph, which are able to represent the influence of exception propagation on the dependences of Object-Oriented programs precisely. In addition, the program slicing algorithm proposed by S. B. Horwitz has been extended, which is able to traverse both the extended interclass dependence graph and the Object-Oriented system dependence graph when calculating program slicing. Finally, we evaluate our approach with an experiment and compare it with other approaches. The result shows that our approach more precise.
Double Closed-Loop Feedback Controller Design for Micro Indoor Smart Autonomous Robot
Authors: Xu Guang Yan , Zhang Meng
Published: February 2012

In order to improve the control system performance of a Micro Indoor Smart Autonomous Robot, an embedded control system based on STM32 processor is proposed and a double closed-loop control structure is applied. The mathematical model is set up and kinematic model is simulated in Matlab/Simulink to estimate the PID parameters. Then the controller is experimented on robot and parameters are adjusted till getting good performance. The results show that the controller is stable and effective.
The Research and Design of 915MHz Radio Frequency Reader Based on FPGA
Authors: Fang Shi Lin
Published: February 2012

Based on ISO/IEC 18000-6 Type B protocol, 915MHz RFID reader has been designed. FPGA is used to process the digital signal that is based on the protocol and C8051F020 is used as the controller. Each module in FPGA and verification module is designed by Verilog HDL. They are synthesized by Quartus II with EP1C6Q240C8 CMOS chip of the Altera as the target device, and they are verified on both timing and function. The result shows that it could satisfy the technology index of ISO/IEC18000-6 Type B requests and possess the advantages of flexible structure, small size and easily upgrading, etc.
Optimal Design on Reduction Device Based on the Most Small Gear-Worm
Authors: Yu Jie , Zhong Pei Si
Published: February 2012

In order to accomplish the optimal design of the most small reduction device of gear-worm, the mathematics model was established and the optimal results was achieved by the method of punishment function. And it has been compared with the traditional design methods.
Research on Electromagnetic Field Optimization for Microwave Hot Recycling of Asphalt Mixtures
Authors: Sun Tong Sheng , Zhang Zhi Sheng , Tang Ling Feng
Published: February 2012

In order to investigate the law of electromagnetic propagation within microwave heating system, Maxwell's equations are applied to build electromagnetic model of recycled asphalt mixtures. Energy distribution of electromagnetic field in asphalt mixtures is researched based on the Poynting theory. The optimization model of electromagnetic field and structure are established by building relationship between electric field and magnetic field. Experiments of microwave heating allochroic silicagel are performed, which demonstrates the accuracy of electromagnetic field optimization.
Remote Sensing Monitoring Model and Method of Methane Emission in Coal Mine Area
Authors: Ci Hui , Qin Yong , Yang Hui , Li Guo Qiang , Feng Ge Fei
Published: February 2012

Currently, there lacks real-time, effective, and highly sensitive means to monitor and control Methane emissions in coalmining region. And the related principles, methods and technology are not complete yet. With regards to this point, the technology of remote sensing to monitor the circumstance in coalmining region is expected to have some advantages which other technology can not match. This paper takes the region of southern of Qinshui basin in Shanxi province as the key research object. Then, the best band is chosen to monitor the methane based on the basic theory of remote sensing, such that the theory model of spectral response of methane can be developed completely. Meanwhile the hyper spectral remote sensing model for monitoring the concentrations of methane in coalmining region is developed also, and is used to analyze the discipline of time-space distribution of the methane in coalmining region preliminary to provide the condition for study the highly sensitive method of monitor atmospheric environment of coalmining region in real time.
Method Resource of Electro-Optical Countermeasures and its Cooperation
Authors: Li Hai Long , Ye Xia , Jiang Shi Qiang
Published: February 2012

A method to distribute the jamming resources of electro-optical countermeasures is introduced through taking method resource as a medium. With the restriction of the friend cooperation and incompatibility disposing, how to apply the method resource to the deployment of electro-optical countermeasures resources is discussed. The resource management procedure is formalized by Finite State Machine (FSM). And a cooperative resource operation system based on multi-agent system is put forward, which serves as a guidance for the realization of the distribution method.
Threshold Variation Based on Triangular Probability Density Function for Error Diffusion Halftoning
Authors: Kim Sang Chul , Kim Hyo Min , Chien Sung Il
Published: February 2012

This paper proposes an error diffusion based halftoning technique of which the threshold is randomly varied to minimize well-known artifacts often observed in the standard method by introducing a triangular probability density function. The diffusion of error is adaptively adjusted depending upon the magnitude of an edge to preserve boundary quality in a half-toned image.