bluuebunny/crossref_metadata_2025 huggingface dataset:
The Study on Microwave Magnetic Roasting Plus Magnetic Seperation and Acid Pickling to Enrich Nb of Low-Grade Niobium Minerals
Authors: Li Jie , Wang Jun , Li Bao Wei , Wang Lei
Published: June 2012

In present article, the low intensity magnetic separation process was studied for the low-grade niobium minerals by microwave magnetic roasting. The influence of magnetic density, particle size of grinding and dispersant addition on the magnetic separation effect of sinter ore with the best magnetisability was investigated emphatically. The results show that the iron recovery was decreased and the iron grade increased gradually with decreasing the magnetic density and particle size of grinding. The magnetic separation result of sinter ore was optimal under the magnetic density of 80KA / m and the grinding grain-size of 33 μm. Fine grinding can effectively make Fe separated from Nb, especially when the dispersant(industrial alcohol) was used in the process of magnetic separation , resulting in the improvement of the grade of iron from 57.2% to 60.5% and enrichment of Nb in the tailing ore(the grade of Nb was 5.01%). After the acid pickling of tailing ore containing Nb, the grade of Nb in the extract was improved to 12.36%, which was enriched four times more than that of low-grade niobium ore before microwave magnetic roasting.
Pose Estimation for 3D Work Piece Using Differential Evolution Algorithm
Authors: Liu Wei , Su Jian Hua , Zheng Sui Wu , Wang Peng
Published: June 2012

In industrial fields, precise pose of a 3D object is the prerequisite of the subsequent tasks like grasping and assembly, thus many researches on accurate pose estimation of a 3D object are explored over the last decades. To get the pose of a 3D work piece from the 2D image data is a challenging task in industrial applications. This paper proposes a fully automated pose estimation system which is capable to estimate the accurate model and pose of a 3D work piece that can well match the 2D image data. This is achieved by representing the above problem as an optimization problem aiming at finding the accurate model parameters and pose parameters of work piece by minimize the difference between the real 2D image and the hypothetical 2D image that produced through the given parameters from 3D image. Due to the coupling of the unknown model and pose parameters and the discontinuity of the objective function, the above optimization problem cannot be solved through traditional optimization approaches. Hence, we utilize a heuristic optimization strategy - Differential Evolution to cope with the problem. The experimental results demonstrate the effectiveness of the proposed method.
Welding Procedure Research of FH36-TM High Strong Steel by Adopting Single Wire SAW
Authors: Wang Xiao Ping , Gu Wei , Yuan Hui Hui
Published: June 2012

FH36-TM high strong steel is used in 350t deck crane base of ship hull in our company. This material is seldom used in shipping industry, owing to high demanding of degree and Thickness welding technology. Minimum degree of welding materials is 5Y degree in using welding wire, in accordance with demanding of degree and thick steel of GL specifications of quality. Preheat temperature is established on base of the influence of temperature of the surroundings, original material degree, thickness, carbon equivalent of original material and content of hydrogen in weld metals. Welding Procedure Parameters of FH36-TM High Strong and 60mm Steel were studied by adopting single wire SAW. The results indicate that jointing properties are equal to original materials. Jointing properties and results of hardness conform to requirements of GL specifications. Drawbacks were not founded in checking jointing, and owners of ship accepted products.
The Research on Bispectrum Detection of Underwater Target in Frequency Domain
Authors: He Guang Jin , Cheng Jin Fang , Zhang Wei
Published: June 2012

As the non-Gaussianity of ship-radiated noise reduces fast when the Signal-to-Noise Ratio (SNR) becomes low, a bispectrum detector in the frequency domain is proposed to ease the problem. First, FFT method is applied on the received data to calculate the power spectrum. Second, the non-Gaussianity of the power spectrum series is tested by Hinich-Wilson Gaussian Test rule. Last, the bispectrum detector based on non-Gaussianity is used to determine whether there are ship-radiated signals. The bispectrum detector in frequency domain is applied to detect simulated noise and real ship-radiated noise. The results are compared with the detector which is in the signal’s time domain. The comparison illustrates that the bispectrum detector based on the power spectrum series(in frequency domain) is much better in detecting low SNR signals, which is very valuable in far distance detection.
Abstracting Synchronization Process in Workflow Involving Partial Synchronization Pattern
Authors: Hu Fei Hu , Jiang Jie , Ma Ling , Liu Lu Lu
Published: June 2012

For the partial synchronization problem in integration of workflow process model with data model, this paper develops an algorithm through synchronization edges to get synchronization processes. Firstly, a workflow model called RTWD net is introduced. Then the concepts of synchronization edge, process, synchronization process, base process, process tree, data type and trace-set of types is given. Finally, an algorithm for abstracting the synchronization process and a case study is presented.
FPGA Implementation of Rational Symmetric Biorthogonal 11-9 Wavelet Transform
Authors: Zhang Ming , Ma Zhuo , Zhang Min Xuan
Published: June 2012

Coefficients of most existing wavelets are irrational, and it costs much hardware resources when implementing on FPGA, which is inefficient especially in embedded system. Some rational wavelets can overcome this deficiency by elaborate design. Motivated by previous works on rational wavelets, we establish a hardware structure for rational 1-D symmetric biorthogonal 11-9 wavelet and implement it on Xilinx FPGA XC3S500E. The experiment reveals that the area in slices of rational 1-D 11-9 wavelet is less than 1/2 of the pipelined 9-7 wavelet when implementing on FPGA.
Color Image Encryption Scheme Based on Chaotic Map
Authors: Qiu Jin , Wang Ping
Published: June 2012

In this paper, a chaos-based image encryption scheme with stream cipher structure is proposed. The key component of the encryption system is a pseudo-random bit generator (PRBG) based on a chaotic map and a linear feedback shift register. The proposed PRBG is not only passes the statistical tests, but also improve the security. The overall design of the image encryption scheme is to be explained while detail cryptanalysis is given.
Granularity Entropy-Based SDG Fault Reasoning Method
Authors: Zhang Zhi Jun , Zhang Jing , Xie Gang , Zhao Wen Jing
Published: June 2012

The fault diagnosis method based on qualitative SDG deep knowledge model has better completeness, but lower resolution. Because it ignores the fact that the effect is different between different nodes in a SDG graph. To solve this problem, a method which added the quantitative information of the effect between nodes into the qualitative SDG reasoning by granularity entropy was proposed, according to which the priority could be given to the multi-potential fault origin and the resolution could be improved. In this method, the value of the effect can be obtained by calculation of attribute state values in fault diagnosis decision table. The shortcoming of the previous fuzzy SDG fault diagnosis method can be avoided.
A New Image De-Noising Algorithm Based on Wavelet Transform
Authors: Wang Zhi Qiang , An Hui Shu , Zhao Kai Cai , Liang Yan
Published: June 2012

This paper proposed a new image de-noising algorithm based on wavelet transform. Firstly, the algorithm made wavelet transform on the image, and then using the GGD described the wavelet coefficients of each sub band. Calculate the similarity of direction of horizontal, vertical and diagonal. Then adjust the coefficients according to similarity function. The experiment results showed that the algorithm not only remove the noise from the image but can protect the edge information of the image. The processing result had better visual effect and high signal to noise ratio.
Relaxed Parallel Scheduling Algorithms Investigation of Support Resource Reservation from Grid
Authors: Chen Jun , Li Bo , Wang Er Fei
Published: June 2012

In this paper, the grid computing environment resource reservation problem of using the parallel machine, proposed the relaxed time parallel scheduling models and algorithms support resource reservation. The simulation results of FCFS and EASY backfill algorithms in resource utilization, job bounded slowdown factor and the success rate of Advanced Reservation (AR) jobs were studied. Show that the relaxation mechanism, the average waiting time and the average bounded slowdown factor of non-reserved jobs down. EASY backfill algorithm which guarantees AR jobs quality of service at the same time, the better the performance improvement of non-AR jobs.
Data Hiding Based on Noise-Balanced Error Diffusion in Color Image
Authors: Chen Hai Sheng , Tang Bao Lin , Chen Guang Xue , Wen Shuang Shuang
Published: June 2012

In the publishing and printing applications, hidden data is embedded into images for copyright protection and ownership generally. In this paper, a reasonable data hiding method based on noise-balanced error diffusion (NBEDF) is proposed, which is applied in color halftone image. Color image is firstly separated into grayscale images from RGB color space to CMYK color space. Secondly, Floyd-Steinberg error diffusion operator is used, and halftone images will be obtained. Finally,through NBEDF, hidden data is embedded in the halftone image which contains the largest amount of information. The experimental results show that hidden information can be visible , when the corresponding decoded image overlays the color image with hidden information. The data hiding method proposed in this paper can be well applied on security printing.
Using a Compass for the Localization of a Robot with PID Control
Authors: Wong Wing Kwong , Yin Sheng Kai , Chang Hsu Sheng
Published: June 2012

From the exploration of unknown or potentially dangerous environments to doing household tasks, robotic applications require localization, i.e., the knowledge of where the robot is located. Localization systems can use the method of dead-reckoning (DR), but error accumulation is a serious problem. Researchers try to solve this problem by employing one or more reference objects in the environment. Unfortunately, all reference objects need to be reset in a new environment. This study proposes a localization method with an electronic compass and proportional-integral-derivative (PID) control in navigation tasks. Experimental results show that this method has some advantages over the methods mentioned above.
Synthesis and Characterization of PCL/TiO2 Nanocomposites Obtained by In Situ Polymerization
Authors: Liu Lian , Liu Yuan , Yu Teng , Heng Li Na , Wang Pei
Published: June 2012

The novel biodegradable poly(ε-caprolactone)/TiO2nanocomposite materials were successfully prepared via in situ in the presence of modified-TiO2initiator and Sn(Oct)2 catalyst. The relationships between morphology, molecular weight, and properties were investigated by means of SEM, TGA, DSC and GPC. A tendency of the nanoparticles to form aggregates was observed, especially at higher fillers contents. The molecular weight of PCL matrix was dependent on the amount of the TiO2fillers
Heterogeneous Databases Integration Approach Based on Hybrid Ontology
Authors: Liu Zhen Yu , Yan Feng Bin , Zhang Bao Hua
Published: June 2012

Ontology has a strong ability in expressing of the semantics and conception speculating, so is used to deal with the problems in the databases integration. In this paper, we relative analysis the weak points of the local and global ontology, establishing a hybrid ontology framework in the databases integration, integrated the query module, shied of the discrepancy between the different data source, and introduced some of the critical techniques and with the supervisory module, log be produced too, convenient for system maintain and upgrade.
A Novel Approach to Identifying Global Exceptional Patterns in Distributed Data Mining
Authors: Liu Mei Ling
Published: June 2012

With the increasing development and application of distributed database, distributed data mining has attracted many data mining researchers’ attention. In this paper, a framework for distributed data mining is introduced, and based on the framework, many patterns are generated from each database after data mining, so it is necessary to synthesize all the patterns to identify the meaningful global patterns. An approach to synthesizing local patterns to identifying global exceptional patterns is developed. In this approach, a pattern’s significance is measured by the deviation of the pattern’s support from the average support. Experimental results show that our approach is reasonable and appropriate to identify exceptional patterns.
Genetic Algorithm Using the Bimodal Operation to Prevent Prematurity and Reduce Computational Time
Authors: Tseng Ling Tzu
Published: June 2012

A probability associated with population fitness is theoretically derived and used as a parameter in the Genetic Algorithm (GA) to switch the operation modes between the population regeneration, and the genetic operation of crossover and mutation in order to effectively prevent the prematurity and reduce the number of function evaluations. The proposed genetic algorithm using the bimodal operation is employed to search for the global optima of five objective functions, whose results are compared to the conventional GAs using a single operation mode. The simulation results demonstrate that the proposed GA can achieve a better convergence performance than the conventional ones when multimodal objective functions are searched for their global optima.
Sharing Multiple Digital Images via Halftoning Methods
Authors: Lee Kai Hui , Chiu Pei Ling
Published: June 2012

The visual secret sharing for multiple secrets (VSSM) technique allows for the encryption of more than one secret images in a given image area. Previous research on VSSM schemes has a pixel expansion problem that limits the capability to increase the capacity of secret image encryption. Moreover, the VSSM schemes focus on sharing binary images to date. These drawbacks limit the applicability of existing VSSM schemes. In this study, we propose a novel encryption algorithm to address these problems. The proposed algorithm adopts a visual cryptography (VC)–based encryption method that can eliminate the pixel expansion problem and is applicable to halftone secret images. The experimental results demonstrate that the proposed approach not only can increase the capacity of VSSM schemes, but also can maintain an excellent level of display quality in the recovered secret images.
Management Technology for Satellite Network Based on Service
Authors: Gao Xiue , Xu Zhi Zheng
Published: June 2012

Basing on the research of structure and management technology for Satellite Integrated Information Network, logical architecture for satellite network based on service is designed, the working principle of which is analyzed too, and the realization of the system is also given. Tests show that service-based network management has good feasibility, the efficiency and intelligence of which is improved.
Improved Ant Colony Optimization and Application on TSP
Authors: Fu Zhi Qiang , Liu Lei An
Published: June 2012

Ant Colony Optimization is an intelligent optimization algorithm from the observations of ant colonies foraging behavior. However, ACO usually cost more searching time and get into early stagnation during convergence Process. We design the improved ant colony algorithm using perturbation method to avoid early stagnation, adjusting volatilization coefficient to increase the exploration of tours at first phase and searching speed at second phase, using hortation method to improved searching efficiency. We apply the improved algorithm on traveling salesman problem showing that the improved algorithm finds the best values more quickly and more stability than Max-Min Ant System algorithm.
Corrective Maintenance Based Vulnerability Repair Procedure to Improve Web Application Security
Authors: Lai Sen Tarng
Published: June 2012

In the internet age, the high efficiency and high profit activities must incorporate with the internet. Web Application (Web App) is an important IT product in the internet age. However, the network intrusions and security vulnerabilities have continued to threaten the operation of Web App. Penetration Testing (PT) is a critical step to identify security vulnerabilities. However, PT can not provide specific and effective follow-up work. For this, combining corrective maintenance with Web App repair operation will be discussed in this paper. And based on corrective maintenance, proposes a Web App Secure Repair Procedures (WASRP). Applying WASRP, the misjudgment ratio of security vulnerabilities and defects can be reduced. And assist to repair the security vulnerabilities and defects, effectively and concretely enhance the Web App security.
A Study of Smart Bus Dynamic Transit System
Authors: Liu Chun Yi , Tang Kuo Tai , Chou Shrane Koung
Published: June 2012

As bus passengers often spend substantial amounts of time waiting for buses, many hope for access to real-time transit information to fulfill passenger demands for routes, station location, transit duration, and bus frequency information. This study develops a “Smart Bus Dynamic Transit System” using cellular phones to combine internet, XML documents, GPS positioning and transit path planning models to allow the inquiry of real-time bus and station locations. Users will be able to rapidly obtain knowledge of optimal transit locations and times, as well as estimated arrival times as reflected on Google Map; thus reducing passenger transit time and improving public transportation system efficiency.
A Hybrid Ant Algorithm for the Vehicle Routing Problem
Authors: Li Yu , Ma Liang
Published: June 2012

A hybrid algorithm for solving the vehicle routing problem is proposed based upon the combination of Ant Colony Optimization and quantum computing. The algorithm takes the advantage of the principles in quantum computing, such as the qubit, quantum gate, and the quantum superposition of states. It can search the best solution by quantum walk and can further improve the search capability of the algorithm for the best solution. Numerical examples are tested and verified, that show the good performances.
The Research of MapReduce on the Cloud Computing
Authors: Gao Tie Liang , Li Jiao , Zhang Jun Peng , Shi Bing Jie
Published: June 2012

MapReduce is a kind of model of program that is use in the parallel computing about large scale data muster in the Cloud Computing[1] , it mainly consist of map and reduce . MapReduce is tremendously convenient for the programmer who can’t familiar with the parallel program .These people use the MapReduce to run their program on the distribute system. This paper mainly research the model and process and theory of MapReduce .
Dynamic Service Selection Based on Ant Colony System
Authors: Li Ying , Tong Wei Qin , Zhi Xiao Li , Ding D.
Published: June 2012

In this paper,ant colony system(ACS)is applied to the dynamic service selection.We design the novel pheromone update rule and the path length between the service node is generated by the QoS parameters of the services. The optimal path in ACS is correspond to a set of optimal QoS parameters composition of services. When the QoS parameters of services are changed, the parameters of ACS will be changed automatically during the process of finding the shortest path. That will improve the reliability of the service selection.
Study the Ferro-Hydrodynamic Characteristic on FHD Bernoulli Model
Authors: Ho Je Ee
Published: June 2012

A ferro-hydrodynamic ( FHD ) model, based on modified Bernoulli theory, to estimate the average ferro-flow velocity is developed in this study. In which, the effective viscosity, strongly dependent on the magnetic intensity and volumetric concentration of ferro-particle, is considered. Referred to the Langevin function, the induced magnetic pressure together with hydraulic head as well as frictional head successfully formulates the modified ferro-Bernoulli model .To correct the analytic results, a self-designed experimental mechanism, equipped with light gate and current-carry solenoid, is set up as well ,which is used to measure the average velocity of piping flow via the duration recorded for ferro-fluid passing through both light gates While compared with experimental results, a good agreement of analytic solutions will be delivered within the working magnetic intensity ,0~36 mT, and the flow velocity is found to be significantly reduced during initial magnetization 0~12 mT as the working condition, subjected to ferro-concentration 0.04~0.4 at temperature 25 oc~45 oc, is specified in this study.
The Development of CZTS Thin Films for Solar Cells
Authors: Ji Nian Jing , Liu Ke Gao , Ma Zhong Quan
Published: June 2012

CZTS thin film, a potential candidate for application as absorber layer in thin film solar cells, has drawn much attention in these years due to its excellent photoelectric performance and nontoxic components. It provides a brief description of the development of CZTS thin film for solar cells, and surveys several methods of depositing CZTS films, then introduces the crystal structure of CZTS which is a problem for composition ratio affecting the properties of CZTS thin films. Here we also outline the development and the structure of solar cells based on CZTS thin films.
Synthesis and Characterization of PMMA/MMT Nanocomposites
Authors: Qiao Jun , Shen Jia Wei , Huang Xiang Hong , Zhang Qian Feng
Published: June 2012

PMMA/MMT nanocomposites has been prepared by using methyl methacrylate (MMA), montmorillonite (MMT) and ethanolamine as the raw materials via an in-situ free radical polymerization process. The as-prepared nanocomposites were characterized by Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The results show that the poly(methyl methacrylate) and inorganic montmorillonite have been effectively combined. The structure and thermal stability of the as-prepared nanocomposites are different from the content of MMT in the nanacomposites.
Shape-Controlled Synthesis of Gadolinium Oxide Nanostructure via Facile Process
Authors: Zhang Qing , Hao Pei Wen , Qu Xin , Wang Chun , Li Rui Xia
Published: June 2012

A facile method to selectively synthesize nano-scaled Gd2O3 with different morphology such as nanosheres and nanorods has been developed in our report. The precursors GdOHCO3 can be prepared by a two-step hydrothermal process via homogeneous generation of hydroxide ions through the hydrolysis of urea, and the formation of different morphology structures were obtained under different reaction temperatures. After further heating treatment, a transformation from GdOHCO3 to cubic Gd2O3 takes place. The morphology and size of nano Gd2O3 strongly depend on that of the precursors GdOHCO3. The X-ray diffraction, transmission electron microscopy and scanning electron microscopy were employed to characterize the as-obtained low-dimensional nanostructures. And the effects of hydrothermal temperature, solvent and urea concentration on the morphologies of the products were also studied.
Effect of Alumina Ceramics Slurry Polymerization Reaction Factor
Authors: Zhang Zhan Xin , Hu Hong Kui , Bo Hui Feng
Published: June 2012

the properties of the alumina ceramics depends directly on the ceramic slurry performance, effects of slurry polymerization of many factors, mainly including the slurry pH value, temperature, initiator. This paper focuses on the study of the factors affecting the performance of slurry, received a specific parameter values, so as to prepare the blank has high strength over 78MPa, density distribution and contraction of uniform body.
Analysis of Large-Dimension Rare Earth Inclusion in Steels by Metallographic Microscope and TEM
Authors: Mou Hong Xia , Li Xin Hua , Liu Sai Tang
Published: June 2012

The mechanism of formation of the large-dimension rare-earth(RE) inclusions in steels is discussed by TEM(Transmission Electron Microscope) taking steel 5CrNiMo with addition of RE as example. The two or several large-dimension RE inclusions come out independent nucleation which grow up into a 0.3~0.5 micron in length, then attract and integrate into the large-dimension with 1~5 micron in length. Though the dimension difference between the RE inclusions is varied, the shape is spherical or approximate spherical or elliptical, but no sharply corneous, because RE can promote the inclusion shape variation through metamorphism.
Influences of Tannic Acid Concentration on Properties of Micro-Arc Coatings Formed on AZ91 Magnesium Alloys
Authors: Zhang Shu Fang , Zhang Rong Fa , Wang Tao , Yao Shun Shun , Chen Zhi Hua
Published: June 2012

Anodic coatings were prepared by micro-arc oxidation on AZ91 magnesium alloys with the addition of 0-8 g/L tannic acid. The influences of tannic acid concentration on the conductivity and coating properties were studied. The result shows that with the increase of tannic acid concentration, the solution conductivity decreases and the coating color becomes dark. In the solution with 4 g/L tannic acid, the obtained coatings are the most uniform and achieve the best corrosion resistance.
Effect of Exercising Pressure during Solid Solution on Microstructure and Mechanical Properties of AM60 Magnesium Alloy
Authors: Duan Wen Yan
Published: June 2012

As-cast AM60 magnesium alloy was solid dissolved with exercising different pressures to it. The microstructure of the products was characterized by optical microscope and X-ray diffraction. The mechanical properties of the products were investigated by microhardness tester and tensile testing. The results show that increasing the exercising pressure promotes the fracture and dissolution into the α-Mg matrix of the coarse β-Mg17Al12 phases distributed along the grain boundaries with a network appearance. With increasing the exercising pressure, the tensile strength, elongation percentage and percentage reduction of area of the alloy significantly increase, but its microhardness decreases.
Study on Effect of Particle Size of Matrix and Reinforcement on Properties of Iron Matrix Composites
Authors: Yang Yu Fang , Li Kang Ju
Published: June 2012

The effect of particle size of iron and size of reinforce particle on properties of materials was studied systematically by the specimen current direct heating dynamic hot press sintering. It is found that mechanical properties of composites increase with the increasing particle size of iron. The properties of SiCp/Fe composites firstly increase and decrease with particle size of SiC and properties are better when size is 15μm.
Study on Color Management of Digital Proofing
Authors: Sun Hong Guang , Li Kai , Yin En Qiang , Cheng Hong Ju
Published: June 2012

The purpose of this experiment was to demonstrate a quality analysis and control method for color management of EPSON 7600 color printer. The parameters of proofs, including solid density, dot gain, gray balance and color gamut were measured, and were compared with the offset quality. The paper put forward a practical solution for editing and optimizing color management and the profiles of devices. At the same time, the effect in Transmission and conversion of color information in standardized color management was analyzed and the evaluation model of color management and profile was established, which included subjective and objective evaluations.
Polyurethane-Acrylate Composite Emulsion Applying to the Pre-Coated Adhesive Film
Authors: Chen Qi Feng , Chen Guang Xue , Tang Bao Ling , Tai Jing Lei , Wen Shuang Shuang
Published: June 2012

This paper studied on the application mechanics and characteristics of the polyurethane-acrylate composite emulsion applying to the pre-coated adhesive film of paper and plastic laminating. The formula design and synthesis method of the polyurethane-acrylate composite emulsion was researched, and the physical properties of the copolymer emulsion was tested by infrared spectroscopy (IR), particle size analysis, gel permeation chromatography (GPC). According to mix the waterborne polyurethane acrylate emulsion to the waterborne rosin emulsion, the hot melt pre-coated adhesive was obtained. The experimental results based on the physical properties and image analysis of the pre-coated adhesive film of paper and plastic laminating showed that: the adhesive film coated by this hot melt adhesive had a high gloss and adhesive force, it improved the application performance of the pre-coated adhesive film of paper and plastic laminating in the printing and packaging industry.
Intra 4*4 Mode Architecture Design in H.264/AVC Intra Prediction
Authors: Yang Jun , Wang Xue Xiang , Liu Hao
Published: June 2012

Aiming at the bottlenecks of long delay waiting in intra 4x4 prediction, this paper introduces an architecture of computing cells for intra 4´4 luma block prediction. It comprises a SKEW computing cell which employs four 2-level serial adders and two single-level adders, two DC computing cells which employs two 4-input adder and a bypass unit for exporting reference pixel values. The RTL model of our design is implemented with the VerilogHDL, and Synplify synthesis results show that the operation frequency of the intra 4´4 prediction could be up to 162.8MHz on the platform of Altera Stratix III EP3SL150F1152C2N. It totally requires 280 cycles to complete the prediction tasks, with a consumption of 15415 logic elements and 28KB memory bits. Compared with similar designs, our architecture requires less processing cycles and less hardware cost.
The Improvement of the Performence of Microstrip Leaky-Wave Antenna Based on Symmetrical CRLH-TL
Authors: Xiong Jun Rui , Sun Ke , Lu Xin , Han Ri Xia , Lu Zhi Yuan
Published: June 2012

In this paper we propose a novel structure for CRLH-TL,that is symmetrical CRLH-TL structure,used in microstrip leaky-wave(MLWA) ,which will have more advantages than asymmetric structure.because the symmetrical structure allows the unit always in balanced state, microstrip leaky-wave antenna(MLWA)based on symmetrical structure CRLH-TL in balanced state can realize the seamless transition from left hand to right hand , expanding the scope of beam scanning,realizing the beam scanning function of the electromagnetic wave from backward to forward and miniaturization.The phenomenon will be explained theoretically and validated through the measurement and simulation in this paper.
Study of Region Segmentation Method for Highway Pavement Distress Image
Authors: Hua Xiang Gang , Wang Shi Qing , Li Jing
Published: June 2012

The paper analyzes the Region Partitioning Method of highway pavement distress image and gives a new region partitioning method and its specific operation steps.
Development of Detection Technology of the Scrap-Jumping in Pierce Processing
Authors: Nonaka Tomohiro , Sakata Yutaka , Marumo Yasuo , Okinishi Yoshinori , Horinouchi Taiki , Ogawa Ippei , Watanabe Shinobu
Published: June 2012

During the consecutive piercing process of metal sheets, it is very difficult to prevent the scrap-jumping completely. The scrap-jumping causes defects generation. Defective goods will be produced when processing is continued without noticing the scrap-jumping. To solve this problem,we made a die that was able to detect scrap-jumping with the load sensor and transmission-type fiber line-laser sensors for pierce processing and executed the defect detection experiment. As a result of the experiment, the newly developed load sensor was able to detect the defect in the following stamp of the scrap-jumping. On the other hand, the fiber line-laser sensor was able to detect the scrap-jumping directly before the following stamp.
Review of Remanufacturing for Automotive Components
Authors: Wen Bing Quan , Xie Xia , Wang Bin
Published: June 2012

Based on the concept of the remanufacturing for automotive components, the significance of implementing the remanufacturing was analyzed in this paper. And then the advanced technologies of automotive remanufacturing were focused on with some examples, such as the electro-brush plating technology, high-speed arc spraying technology, hypersonic velocity plasma spraying technology, scratch fast fill technology, and so on. In the end the conclusion was educed that the automotive remanufacturing is significant to the sustainable development of the society economy and the environmental protection, so the implementation is imperative under the situation.
A New Current-Mode Multiphase Sinusoidal Oscillator Using Adjoint Op-Amp
Authors: Li Yon Gan , Fan Zhan Ting , Zhang Xuan Ni
Published: June 2012

In order to get current-mode multiphase sinusoidal oscillator with high frequency, high accuracy, high stability and easy to be integrated, a multiphase sinusoidal oscillator circuit is presented. The oscillator can produce N output-currents (N being even or odd) with equal-amplitude and equal- phase spaced. The circuit uses adjoint Op-Amp, grounded capacitors and enjoys low passive sensitivities. The oscillation condition and frequency for the oscillator can be tuned independently. The simulated results are illustrated.
The System of Liquid Level Detection
Authors: Li Ya Mei , Liang Ping
Published: June 2012

The design is a ultrasonic level meter based on the PIC18F4520 micro chip. This ultrasonic level meter can be achieved in data is not lost when the power is down, making multi-function button to change the value, accurate measurement of liquid level. Closed loop fixed gain amplifier and the echo peak calibration signal amplification technology eliminates the phase shift error and the amplitude fluctuation error of the method, and digital potentiometers to achieve the system's automatic gain control, improve the quality of the echo signal. The effect of design is good, especially in sewage treatment, and oil storage tank system that can not contact measuring system have a strong value in use.
Wiring of Cables Based on Virtual Prototyping
Authors: Wang Feng Jun , Wei Fa Yuan , Deng Ke Wen
Published: June 2012

Wiring of cables is very important in the design of electro-mechanical products. Whereas, there is not an effectual virtual wiring method for the moment. Aimed at the problem, a virtual wiring is expatiated in this paper. Virtual layout design is achieved based on human-computer interaction, which is verified by virtual assembling. Geometrical modeling of cables, the precision of which is quite high, is established based on energy-optimized method. The characteristic of virtual assembling to the products, which make up of cables and other parts, is discussed. Especially, the assemble technique programming and transformation simulating of cables are studied. In the end, the wiring is actualized on a product, intention to validate the feasibility of the method.
Investigation of Microstrip Antenna Operating Frequency Based on its Parameters
Authors: Zhang Yu Fa , Yu Da Bin
Published: June 2012

Microstrip antenna exhibits unique properties that have led to wide range of application. The frequency is the most important factor in antenna engineering. However, antenna resonant frequency is determined by various factors. This paper focuses on some of these parameters, and studies have also been performed to obtain design guidelines for patch antenna. Parameters involved vary from -40% to +40% compare to the selected dimensions as a criterion, and the frequency shifts have been obtained, Comparatively, the patch length plays the most important rule on antenna frequency. The feed point location and substrate thickness take a little effect in quantity, and substrate thickness also works on antenna operating frequency. Experimental data and results analyzed are useful for antenna design.
Design for Excitation Source of Airborne Radio System on Unmanned Aerial Vehicle Based on USB Bus
Authors: Su Ji Jie , Yang Yi , Li Guo Dong , Peng Jian Yi , Li Ming
Published: June 2012

This paper analyzes the operational principle of airborne radio system on unmanned aerial vehicle, puts forward a design plan for excitation source of airborne radio system on unmanned aerial vehicle based on USB bus, realizes the performance detection and failure isolation of airborne radio system on unmanned aerial vehicle, and provides the detailed introduction for the key units. The experiments show that the excitation source can meet the maintenance and training requirements of airborne radio system on unmanned aerial vehicle.
Design of Master Controller Input Processing Method Based on LPC2292
Authors: Yan Hui , Yu Lin
Published: June 2012

Because of external environment or man-made factors influence, the input signal and data of master elevator controller can not be judged and computed basis directly, but needs the corresponding processing .Therefore an operating system task should be assigned for input signal processing data, in order to deal with input signal. In this paper it realized switch quantity software filter and processing, analog quantities and high-speed counting input treatment of elevator master controller based on LPC2292 .
Improved Camera Calibration Method Based on Vanishing Points
Authors: Duan Yong Yong , Zhang Xiu Mei , Zhao Long
Published: June 2012

To improve the accuracy and efficiency of field camera calibration, an improved fast camera calibration method is proposed. Nonlinear translation algorithm based on calibration field is adopted to solve intrinsic parameter while an improved vanishing points method is introduced to get extrinsic parameters. Surveillance camera is used to validate the proposed approach. Experiment results show that the algorithm is convenient and feasible.
The Review of Grid-Connected PV System’s Transient Voltage Stability
Authors: Ma You Jie , Liao Cheng , Zhou Xue Song
Published: June 2012

Grid photovoltaic system’s inverter, grid device and other power electronics device consume a large quantity of reactive power, the distribution system load mostly is perceptual, it must also consume reactive power. This will make big interference interconnection of photovoltaic system after the transient voltage stability serious test. Therefore, the study grid photovoltaic system transient voltage stability is of great significance. This paper introduces the transient voltage stability of research contents, such as transient voltage stability of factors, stability criterion, the simulation calculation, and puts forward prevention transient voltage instability accident measures, and analyzes system transient voltage stability mechanism.
Design Method of DLMS Adaptive Filter Based on FPGA
Authors: Dai Jing , Zhou Rui , Tang Shi
Published: June 2012

This paper proposed DLMS algorithm which is suitable for real-time signal processing. The algorithm adopts hardware multiplier and pipeline technology to accelerate the operation of the system. By analyzing the time sequence and spectrum of the output signals, the attenuation of the interference signals is about 51dB. It can further demonstrate the high quality and high speed of the DLMS algorithm to filter out the interference signals, and well handle the relationship between the resources and speed of FPGA to meet the requirements of high-speed signal processing.
Design of OTA-C Gaussian Function Generator
Authors: Gao Kun
Published: June 2012

A novel method for analogue VLSI implementation of programmable Gaussian function generator is proposed in this paper, in which the Gaussian function is approximated by the OTA-C filter whose frequency response is Gaussian-shaped. OTA-C circuit is very suitable for this application since the programmability can be controlled by the transconductance of OTA precisely and easily. Based on the probability argument, the OTA-C biquadratic filters and OTA-C integrator which have the cascade connection are used as the building block. To elaborate the construction procedure, a seventh-order OTA-C Gaussian function generator is selected as an example. The simulation results verify the feasibility of the presented approach.
Research on Audio-Video Synchronization Coding Based on Mode Selection in H.264
Authors: Li Xiao Ni , Chen He Xin , Wang Da Zhong
Published: June 2012

An embedded audio-video synchronization compression coding approach is presented. The proposed method takes advantage of the different mode types used by the H.264 encoder during the inter prediction stage, different modes carry corresponding audio information, and the audio will be embedded into video stream by choosing modes during the inter prediction stage, then synchronization coding is applied to the mixing video and audio. We have verified the synchronization processing method based on H.264/AVC using JM Model and experimental results show that this method has achieved synchronization between audio and video at small embedded cost, and the same time, audio signal can be extracted without distortion, besides, this method has hardly effect on the quality of video image.
The Design of Wireless Load Monitoring System of Auxiliary Shift Based on Labview
Authors: Xiao Xing Ming , Ma Na
Published: June 2012

According to the working principle of load monitored oil pressure, in order to real-time monitor the actual load of auxiliary shift, and make the execution of alarming on the malfunctions in the working state of the equipment concerned, we designed a monitor system of auxiliary shift based on Labview[1]. This system can provide guarantee of the safety lifting. So the formation, design principle, hardware and software design well be introduced in this article.
Effects of Accelerated Aging Period of Time at 180°C on Tensile Property of Plain Woven Fabric/Epoxy Resin Laminated Composites
Authors: Song Lei Lei , Liu Quan Rong , Li Jia Lu
Published: June 2012

In this paper, carbon fiber reinforced resin matrix composites were produced by stacking eight pieces of carbon fiber woven plain fabric and subjected to accelerated ageing. Accelerated ageing was carried out in oven at 180°C for three different time intervals (60 hours, 120 hours and 180 hours). The influence of different ageing time intervals at 180°C on tensile properties of laminated composites was examined, compared with the composites without aging. The appearance and damage forms of these laminated composites were investigated. The results revealed that the tensile strength of the laminates declined significantly after long term accelerated aging at 180°C. The average tensile strengths of composite samples aged 60 hours, 120 hours, and 180 hours period of time at 180°C are 80.36%, 79.82%, 76.57% of average tensile strength of composite samples without aging, respectively. The high temperature accelerated aging makes the resin macromolecular structure in the composites changed, and then the adhesive force between fiber bundles and resin declines rapidly which result in the tensile strength of composites aged decrease. This research provides a useful reference for long term durability of laminated/epoxy resin composites.
The Research of CAE Active Knowledge Aided System Based on Network
Authors: Zhang Xi Ai , Ma Fei
Published: June 2012

According to the application status of the Computer Aided Engineering (CAE) in mechanical design field and the higher knowledge threshold that is set up for designer by CAE technique, this paper puts forward to construct a basic prototype of system to provide knowledge assistance for CAE designer with active knowledge assistance method and operation encapsulation based on network. And it is encapsulated as the partner software of the CAE software to realize the effective utilization of the CAE to reduce the learning burden of designer and designing cost. The existence of this aided system promotes the application of CAE in mechanical design engineering and improves the innovation ability.
A Study on Polarization Experiment and Mechanical Behavior for PVDF Film
Authors: Lai Feng Min , Lin Chien Chang , Yang Chao Chieh , Lan Chun Hsiang , Yang Chen Mao
Published: June 2012

The paper investigats the polarization properties and mechanical behavior of new piezoelectric polymer material plates by experimental procedures and finite element analysis. In this study, the PVDF materials are used to produce the piezoelectric polymer layer and the coating film, we have provided nice procedures for manufacturing piezoelectric polymer plates (PVDF). In order to find the proper proportion of the PVDF to achieve the best material properties, the mechanical behavior of displacements and stresses for the electrets is investigated by experimental measurement and finite element analysis (with ANSYS). It is investigated whether the thicknesses of specimens will affect the polarization. The paper is presented modal analysis techniques for piezoelectric thin plates.
Modeling and Implementation of 3D Mannequin in Garment CAD
Authors: Ma Qing
Published: June 2012

The paper used technology of reverse engineering to process body point cloud data that acquired from three-dimensional (3D) scanning device, so as to rapidly establish 3D mannequin model matching to corresponding bodily form. Based on establishment of static mannequin model, characteristic curve can be dynamically adjusted and mannequin model surface can be reconstructed according to specific requirements of users to generate realistic 3D mannequin model in accordance with the application needs of made-to-measure clothing in garment CAD.
Design and Implementation of Power GIS Editing System Based on ArcEngine
Authors: Yao Zhi Fei , Han Shu Ai , Wang Rui
Published: June 2012

With the purpose of lowering the problem to compile and maintain for GIS users, this paper will demonstrate how to implement on power GIS editing system based on ArcEngine under .net environment. With the help of the GIS and the complex science of geometry network data organization, it emphasizes the maintenance function of the electrical data to realize the analysis of the connectitvity of the whole network of the line.
Simulating 3D Cloud Shape Based on Computer Vision and Particle System
Authors: Gong Lin
Published: June 2012

Clouds are an important part of natural environment. The realistic simulation of cloud is a challenging topic in computer graphics. This paper proposes a simple, efficient approach based on computer vision and particle system to model various 3D clouds. This method use computer vision technology to extract 3D structure information of clouds from images, then using particles technology to fill the 3D space and render the cloud. This method is suitable to model all kinds of clouds, such as stratus, cumulus, cirrus etc. It is an improvement over earlier systems that modeled only one type of cloud.
Design and Implementation of Keyword Filter System Based on Netfilter
Authors: Yang Peng Ying , Sun Yu Xia
Published: June 2012

A keyword filter system is constructed based on Linux kernel firewall and netfilter-queue. Packets with http information will be sent to Netfilter and wait for decisions through using IP tables. The system can do deep filtering to packets and use multi-pattern algorithm, which increases the fitness and efficiency.
Using RFID Technology to Build Ubiquitous Computing Environment of the Aircraft MRO Process
Authors: Lu Mi Cheng , Tai Ta Wei , Chiu Li Hsiang
Published: June 2012

The environment of the network is by Electronic, Mobile gets to Ubiquitous, has already been irreversible trend, and the implementation of RFID technology had aroused discussion in a lot of fields. We think that the combination of RFID and Ubiquitous environment will cause another commercial revolution. Many industries had deployed RFID, like aviation industry, in which RFID is used in maintenance materials and baggage management. This paper discusses the implementation of RFID in Maintenance, Repair and Overhaul (MRO) process and the building of a ubiquitous computing environment. We believe that our proposal has three merits to MRO (1) anti-counterfeit parts (2) MRO liability (3) efficient and effective inspection. The architecture can address the competition pressure that aviation industry faces and consequently enhance competition advantages.