bluuebunny/crossref_metadata_2025 huggingface dataset:
Corrosion Behavior of TWIP Steels in 3.5% NaCl Solution
Authors: Razavi Gholam Reza , Monajati Hossein
Published: February 2012

TWIP steels are high Mn (17-35%) austenitic steels having strength and ductility concurrently. This makes them suitable for applications that need high strength and ductility like gas tanks and oil platforms. To these applications corrosion resistance of these steel is also of paramount importance and needs to be noticed. This was achieved by two usual methods of weight loss and potentiodynamic polarization of the samples, after that they casted and hot rolled in experimental scale. The observed corrosion pits are related to the chemical composition. It is connected with the high dissolution rate of Mn and Fe atoms in NaCl solution. Fractographic analyses of samples revealed corrosion products on their surface in a form of pits with diversified size.
Preparation and Evaluation of Antioxidative Peptide Fraction of Mustelus griseus Muscle Protein
Authors: Li Zhong Rui , Wang Bin , Zhang Qi Hong , Ma Jia Hui , Deng Shang Gui
Published: February 2012

Inspired by DPPH• scavenging assay, an efficient method had been developed to acquire muscle hydrolysate (AMH) from Mustelus greseus by an orthogonal L9(3)4 test. Under optimal enzymolysis parameters (enzymolysis time 4 h, enzyme dose 1%, enzymolysis temperature 55 °C and pH 6), the DPPH• scavenging rate of AMH reached to 27.92%. Enzymolysis time and enzyme dose showed significant effects on hydrolysate preparation (ANOVA p<0.05). Based on molecular weight (MW), AMH-I (10
Effect of Mg on Microstructure and Mechanical Properties of Copper-Coated Short Carbon Fiber Reinforced Al Alloy Matrix Composite
Authors: Shi Jian Chao , Li Yi Han , Yao Guang Chun , Yan Peng Fei , Liu Huan
Published: February 2012

Abstract: Copper coated short carbon fiber reinforced aluminum alloy matrix composites have been prepared with 0.3-1.5 wt% Mg as alloying addition by stir casting. Effect of Mg on the microstructure and mechanical properties of the composites was investigated. The microstructure was observed by scanning electron microscopy and the results show that adding Mg can make the distribution of carbon fibers uniform in the composites, reduce laminated and agglomerated. Tensile test and hardness test were carried out, the results show that the tensile strength and the hardness of the composite is increased by 13% and 8% when Mg content is 0.9 wt%.
Continuous Element Determination of Barium-Calcium Based on Single Sample of Ferroalloy Series
Authors: Li Xi Ming
Published: February 2012

To achieve bath analysis of Barium and Calcium in ferroalloy, potassium chromate is used to precipitate Ba2+ and Ca2+ & Ba2+ is tested in filtrate/filter residue with EDTA and Fe2+ after acidification, respectively. Short-cycle analysis, single testing sample used and effectively shielding of hetero-ions are the main advantages of this method. Under situation where immediate testing is needed without any specialized analytical equipments, this method will be practically effectual.
Experiment Research on Deformation Properties under Unloading of Soft Clay
Authors: Shi Xu Chao , Chen Wu Xin , Lv Xiu Juan
Published: February 2012

In this study, many experiments are developed to analyze the deformation properties under unloading of soft clay. There are many settlement deformation analyses about soft soil ground in the past. Now we need analyze the rebound deformation in many engineering. Deformation properties under unloading of soft clay have been studied through large numbers of tests. The soft clay’s rebound defamation existed critical unload ratio, When its unload ratio is less than critical unload ratio, rebound deformation doesn’t happen; But rebound deformation would happen if unload ratio is more than critical unload ratio; The soft clay deformation after unloading is divided into three parts included primary rebound, secondary rebound and appending secondary consolidation deformation.
Photoluminescence and Transparent Conductive Properties of the Al and Sb Codoped ZnO Thin Films Annealed in Different Atmospheres
Authors: Zhong Wen Wu , Liu Fa Min , Shi Qin Yi , Chen Wei Ping
Published: February 2012

Al and Sb codoped ZnO thin films were prepared through a sol-gel spin coating method on glass substrates and annealed in different atmospheres. The XRD results show that the films have hexagonal wurtzite ZnO structure and SEM results reveal that the films annealed in hydrogen consist of hexagonal nanorods with diameters of 84 nm and lengths of 422 nm, however the films annealed in other atmospheres without nanorods. The photoluminescence (PL) spectrum shows that the emission peaks of the films are mostly at 390 and 460 nm, and the film annealed in hydrogen has the strongest intensity of peak at 390 nm and the film annealed in air has the strongest intensity of peak at 460 nm. The electrical properties show that the films annealed in hydrogen have a lowest resistivity of 1.02×10-3 Ω•cm.
Isolation and Identification of Strains with High Chitin Deacetylase Activity
Authors: Gou Jing Xuan , Dong Wen Bin , Zeng Qiao , Zhang Jing Jing
Published: February 2012

Chitosan is an aboundant biopolymer like cellose. To bioprocess them with chitin deacetylase (CDA), the products will be used in medicine and food industry. [In order to get new strains with significant ability of (CDA) Twenty eight strains producing CDA were isolated and screened out from the soil samples by color reaction in plate medium. The strain F2-7-3 was screened out from these strains for the highest CDA activity, which can reach more than 250U/mL. The paranitroacetanilide was used as the substrate, the optimum temperature for enzyme activity was determined to be 50°C and the optimum pH was 7.0. It was studied by method of morphological, physiological and biochemical characteristics and 16S rDNA analysis. Data shows that the strain was Rhodococcus sp.
CFD Simulation of Pyrolysis of Lignite in a Downstream Fluidized Bed
Authors: Sun Yong Li , Zhang Rong , Zhang Lv Hong , Zhang Ya Nan
Published: February 2012

This paper works with the CFD simulation of the process of pyrolysis of lignite particles in a downstream fluidized bed, which actually means the particles would fall down from the injection point and escape the furnace from the bottom. The particle track is solved by using the Lagrangian approach, while the flow of the inert gas (nitrogen) is dealt with by the Eulerian approach. The heat transferred from the nitrogen gas to the surface of particle is computed by means of the famous Ranz-Marshall correlation. The chemical reactions are simulated using part of the coal combustion model inserted in the commercial software used.
Microstructual Evaluation of 13Cr-2Ni-2Mo Stainless Steel Quenched by Induction Heating
Authors: Honda Takashi , Santos Edson Costa , Kida Katsuyuki , Shibukawa Takuya
Published: February 2012

In this work, a 5 mm diameter 13Cr-2Ni-2Mo stainless steel shaft was quenched by induction heating by using a 15 mm diameter coil and the influence of the induction heating process on the material’s microstructure and mechanical properties was investigated by laser confocal scanning microscopy, X-ray diffraction (XRD) and Vickers hardness testing. Through the heat treatment process, the hardness increased two-fold and the XRD pattern changed indicating occurrence of martensitic transformation. Based on these results, it is concluded that induction heating can be used as a quick method of hardening 13Cr-2Ni-2Mo alloy steel.
Research Progress of Fiber Reinforced Cement Composites
Authors: Shi Xue Jian , Wu Xiao Qing
Published: February 2012

Based on the importantce of component of cement-based composites, introduced the fiber reinforced cementitious composites in fiber type and cement-based materials and the main types of filler, and their effect on the interface between the fiber and the cement.
Changes in Three Dimensional Magnetic Fields of Carbon Tool Steel (JIS-SKS93) under Single Spherical Hertzian Contact
Authors: Kida Katsuyuki , Uryu Megumi , Honda Takashi , Santos Edson Costa , Saruwatari Kenichi
Published: February 2012

Failure of dies and molds is caused by wear and deformation during the metal sheet forming process. Die wear takes various forms, and the contact conditions in die-parts affect the strength of the components. Non-destructive methods that can be related to contact conditions are necessary to study and understand the phenomena caused by the contact stresses. In the present work, a newly developed scanning Hall probe microscope (SHPM) equipped with a GaAs film sensor was used to observe the three-dimensional magnetic fields in tool steel plates before and after contact tests at room temperature in air. It was found that the intensity of three-dimensional magnetic fields is only slightly affected by the spherical Hertzian contact. However, all of the three-dimensional components of the magnetic fields change significantly. The extent of the changes depends not on the distribution of stress under spherical Hertzian contact but on the initial distribution of the magnetic fields.
Microstructure and Formation Mechanism of Titanium Carbide Reinforced Ferrous Composite
Authors: Wang Jing , Fu Si Jing , Gao Rong
Published: February 2012

This study dealt with the formation mechanism and microstructure of titanium carbide particulate reinforced Fe-based composite. The microstructure of the composite was characterized by scanning electron microscopy (SEM), the microstructural study reveled that the TiC particles were distributed uniformly in the iron matrix, and TiC particles had various morphology. The formation mechanism of titanium carbide was also investigated by differential thermal analysis (DTA) and X-ray diffraction(XRD). The experimental results indicated that titanium carbide formed at 1138.2°C.
A Novel Method to Recognise Closely Connected CAPTCHA
Authors: Zhang Liang , Huang Shu Guang , Hu Rong Gui , Tang He Ping , Shi Zhao Xiang
Published: February 2012

Nowadays, most of text CAPTCHAs use character connection as a primary means to avoid being recognized. To recognize this kind of CAPTCHA, a new image analysis model, Concept Component Analysis (CCA), is proposed. Based on the approaching idea in Newton’s iteration, this new model is solved by a multi-population genetic algorithm. Compared with traditional image analysis models, such as PCA, components obtained by CCA have obvious concept meanings. Images can be recognized by solely relying on these components, No classifier is needed. CCA has achieved good recognition results in our experiments. Suggestions for securing text recognition CAPTCHAs are also provided based on experiments results.
Apply Language Nature Rhythm to Large Scale Duplicated Text Detection
Authors: Chen Fan , Feng Zhi Yong , Zhao Geng
Published: February 2012

It is urgent that detect the duplication in large scale text in the Web. An arithmetic based on language rhythm for text duplication detection is proposed here. Get the nature rhythm marked by punctuations in text and build the rhythm compare matrix to complete the publication detection for each paragraph. This arithmetic is different with the other one which is based on words analysis. And it has a high accuracy and a low complicacy.
Fractal Mechanism Analysis and Simulation of Information System
Authors: Qiao Zhi , Chai Li He
Published: February 2012

To find the best design and development model for the information system, this paper discusses the structural formation of the information system and the kinetics of the evolution of information system from the perspective of non-equilibrium statistical mechanics and generalized entropy in the system. Based on this view, physical laws for the evolution dynamics of information system are expressed as the maximum generalized entropy principle (MGEP). Combining with self-organizing feature map algorithm, we have analyzed the effect on the system structure from the exchange between information flows. That is to say, an information system has fractal characteristics. Except for these theories, we have done some numerous simulation on information systems of 10 major cities in China's to verify the fractal characteristics, which has great significant to the guidance of achieving full use of resources, accelerating the process of information society and constructing information systems.
The Construction and Application of the Target Enterprise Selection Model in M&A
Authors: Zhang Gui Ling
Published: February 2012

The purpose of this paper was to illustrate how to select the target from the candidates in M&A. Based on synergy theory, this paper constructed the target enterprise selection model to evaluate and select the target enterprise in M&A; meanwhile, it introduced the process in details by Z Company’s practice. The new and original of this paper was to put the synergy theory and analytic hierarchy process into M&A practice.
Research on IOT Technology and IOT’s Application in Urban Agriculture
Authors: Duan Yan E
Published: February 2012

The Internet of Things (IOT) is a self-styled term to describe a new network technology that make all of objects be able to communicate in the Internet via RFID and different sensor devices. It is the basis of intelligent management. In this paper, the concept of IOT was first explained from the side of technology and application etc. Then the model and architecture of IOT were analyzed in detail. Finally, this paper introduced the specific application of IOT in Urban agriculture, and gave the application frame model in agricultural production and agricultural product supply system.
Automatic Image Mosaic Based on SIFT Using Bidirectional Matching
Authors: Dou Jian Fang , Li Jian Xun
Published: February 2012

In the paper, an image mosaic algorithm based on SIFT feature matching is proposed. For an image mosaic method based on feature matching, feature detection is needed to perform in each image. Thus a rapid detection operator is essential to the efficiency of the whole algorithm. In this paper, we use SIFT to extract features. The extracted features are matched by k-d tree and bidirectional matching strategy to enhance the accuracy of matching. Then, a RANSAC algorithm is applied to eliminate outliers to ensure effectiveness of the matching. Finally images are stitched by weighted average blending algorithm. The presented algorithm overcomes the disadvantages of the traditional image mosaic methods which are susceptible to different scale and moving objects, and can achieve sub-pixel accuracy of matching and algorithm is still available to the images at different scale. Experimental results show that the method with strong robustness performs effectively.
Resonance Modes in Multiple Quantum Wells Structure of Two-Dimensional Photonic Crystal
Authors: Zhang Chun Mei , Meng Tao , Hao Yan Ping , Liu Fu Ping
Published: February 2012

We have theoretically discussed the resonance modes in a two-dimensional photonic multiple quantum wells structure (QWs) consists of one photonic crystal with square lattice of parallel dielectric circular columns in air and some layers of columns are removed at constant intervals. The generation and frequency split of resonance modes are observed and explained with tight-binding approach. The effect of the interaction distance on the frequency split is also discussed.
Changes in the Magnetic Fields of Star-Shaped JIS-SKS93 Plates Embedded in Clear Acrylic Cold Mounting Resin under Tensile Stress
Authors: Uryu Megumi , Kida Katsuyuki , Honda Takashi , Saruwatari Kenichi , Santos Edson Costa , Rozwadowska Justyna
Published: February 2012

Fatigue failure of machine components occurs when cracks form in the stress concentration area and propagate under continued loading during component work. In order to understand the relation between the phenomena of stress concentration and crack propagation, non-destructive evaluation methods using in-situ measurements in the stress concentration areas are necessary. In the present work, a scanning Hall probe microscope (SHPM) equipped with a GaAs film sensor was developed and the three dimensional magnetic fields were observed at room temperature in air. The effect of stress on the changes in the magnetic field in steel components is reported. A steel specimen (JIS SKS93) embedded in acrylic resin were strained at different loads and the magnetic field before and after straining were observed. The obtained magnetic images clearly corresponded with the shape of the steel plate. It was possible to measure the changes in the magnetic field of the steel sample after straining under tensile loading, by neutralizing the initial magnetic field of the specimens prior to testing.
A Topology Optimization Method of Application-Specific Network-on-Chip
Authors: Lai Guo Ming , Lin Xiao La
Published: February 2012

Future high-end System-on-chips (SoCs) will be consisted of hundreds of cores integrated on a single chip. On-chip communication becomes the major performance bottleneck of SoCs. Network-on-Chip (NoCs) have become as the most prominent solution to on-chip communication problems. Network topology which affects the total network conformance is basic of network related researches. The objective of topology synthesis is to minimize the power consumption and router resources while satisfying bandwidth constraints. In this paper, we present a two-level genetic-algorithm (GA) based technique to synthesize application-specific NoC topology. Comparing to an existing three-level GA, experiments show that our technique saves 1.8% energy while saving great runtimes of 97.79%. Our technique generates approximate optimal topology less than one minute.
Performance of VoIP Networks Using MPLS Traffic Engineering
Authors: Faisal Mohammed , Uddin Jia , Shil Shimul
Published: February 2012

The implementation of Voice over Internet Protocol (VoIP) technology is on the increase because of its ability to enhance operating efficiency and reduce infrastructure cost. Voice and data packets traverse over IP networks with fixed maximum capacity. But susceptibility to traffic congestion which results in delay and packet losses is still a major challenge of VoIP technology. Multiprotocol Label Switching Protocol (MPLS) with Traffic Engineering (TE) is an approved standard technology that has the capabilities to minimize network congestion and improve network performance by reducing delay and packet loss to yield a higher throughput. In this paper, we investigate how MPLS Traffic Engineering can be implemented to reduce traffic congestion on VoIP networks.
CFD Simulation of Gas Fluid Flow in a Rotating Zigzag Bed
Authors: Jiang Bin , Zhang Ya Nan , Zhang Lv Hong , Zhang Rong
Published: February 2012

A novel kind of high gravity device-rotating zigzag bed (RZB) was developed. The RZB is a kind of high efficiency gas-liquid contactor and a promising alternative in chemical process industries. However, because of the complexity of fluid flow inside the RZB, the flow experiments do not easily lead to the deeper understanding on the fluid dynamics in an RZB. This paper works with the CFD simulation of the process of RZB. Different gas flow velocities, rotating speed are comprehensively and systematically observed. The preliminary simulation results show that the models used to describe the RZB can give rise to better understanding of the flow in an RZB.
Controlling Fracture Height in Fracturing Effect Prediction of Oil Well Based on Uncertain Multi-Attribute Decision Making
Authors: Wang Jun Qi , Li Ni
Published: February 2012

Hydraulic fracture to oil well, creating fracture in the bottom stratum, making the crude oil flow to the bottom along the fracture are common stimulation treatment used in oil field. Controlling fracture height fracturing is controlling the extension of fracture within oil layer area, which is the key to success or failure of hydraulic fracturing. Especially, controlling fracture height to avoid pressing to wear the near water layer, which causes a sudden increase of oil water production, is particularly important to oil production. Fracture extension theory and field practice indicate that in controlling fracture height fracturing process, the fracture height extension is related with reservoir stress difference of oil layer and adjacent barrier on a certain scale of construction also it is related with the 8 parameters such as the rock Young's modulus, fracture toughness, Poisson's ratio, permeability, reservoir thickness, fracturing fluid viscosity and fluid loss coefficient and so on. This study introduces uncertain multi-attribute decision making method to the well needing controlling fracture height fracturing, takes expected minimum fracture height as the target, concentrates the 8 attribute values of oil well with OWA operator, obtains comprehensive attribute value, and sorts the expected oil well fracturing effect according to the size of comprehensive attribute value, then selects construction well according to the sort results. In this way, it not only solves the difficulty to accurately resolve fracture height of analytical method and problem of large calculation of numerical method, also provides a simple and practical method for live well selection. According to fracturing selection of Changqing oil field 5 wells and on-site application comparison of 2 wells, it is consistent with the prediction result.
Research on Fuzzy Control System for Air-Condition in Bus
Authors: Miao Qiu Hua , Jiao Pei Gang , Liang Jie
Published: February 2012

In this paper fuzzy logic control is introduced in auto adjust control system of air in bus. Fuzzy controller employs fuzzy control model of two inputs and one output. The paper also introduces the hardware framework, working principle and software of the system, analyzing merits of fuzzy logic technique, putting emphasis on the design of the fuzzy controller. In the controlling process, fuzzy controller samples temperature signal in bus and calculate deflection and deflection rate of temperature, looks up corresponding output in controlling table, and calculates its precision, then fuzzy controller gives related signal to motors and valve, acquiring satisfactory effect.
Mine Fan Speed Testing System Based on Wind Speed Data Wireless Transmission Unit
Authors: Song Ying
Published: February 2012

Wind speed data acquisition and processing system for mine fan speed test based on ATmega128L-8AU single-chip microcomputer is introduced in this paper.The wireless data transmission module SIM300 is applied to the system,which can achieve the wireless transmission of measured data. The system can be controlled by users at the receiving end. The system avoids the complicated on-site connection, shows superiority in application flexibility,improves the working efficiency and reduces costs
The Application of Co-Evolutionary Algorithm in the Engineering Project Multi-Objective Optimization Based on Engineering Materials
Authors: Li Wan Qing , Tian Shu Fen , Meng Ling Yu , Zhang Qing Heng
Published: February 2012

The optimization of the three objectives, time, cost and quality, is the important project management content. This paper applies co-evolutionary algorithm to the optimization of the three engineering project objectives. The populations of time, cost and quality are separately designed for cooperative evolutionary operators in the paper, which are coordinated and compromised to get the coordination solution in pareto optimum. All the programming algorithms are through Matlab, and finally the feasibility and superioirty of this algorithm is proved by a engineering project
Study of an Inorganic Ion Exchanger AlFe(PO4)2
Authors: Li Heng
Published: February 2012

New complex inorganic ion exchanger AlFe(PO4)2 is synthesized. Chemical composition, structure and some related properties and complex mechanism of this ion exchanger are investigated by electron microscopic, X-ray diffraction and chemical methods. The ion exchange behavior of AlFe(PO4)2 has been studied in detail. Results of column test indicated, that the exchange capacity obtained from tests for Li+ in 0.1mol /L HNO3 solution is 5.5mmol/g.
Analysis and Simulation of UHF RFID System Based on ISO/IEC18000-6 Protocol
Authors: Sheng Qiu Lin , He Shan
Published: February 2012

The architecture of UHF RFID is designed and simulated based on ISO/IEC18000-6 protocol. The simulation is divided into the transmitter and receiver part using Matlab/Simulink. This article describes the architecture of the model in details, and achieves flexibly modulation and demodulation of different encoding types. Finally, some results of the simulation are presents
Joint-Optimization Method of Detection Period and Detection Time with Spectrum Detection in Cognitive Radio
Authors: Ye Jun , Zhu Qi
Published: February 2012

Spectrum detection is a critical technology in cognitive radio, which involves two very important parameters: detection period and detection time. Firstly, in order to improve spectrum efficiency and reduce the interference to authorized users, detection period optimization is adopted to maximize spectrum access opportunities and minimize the interference to authorized users. Secondly, under the target detection probability constraints, detection time optimization is adopted to maximize the achievable normalized throughput when CR user detects the channel. At last, we develop the joint-optimization algorithm of detection period and detection time. Compared with the method in literature [9], it can be found that our joint-optimization algorithm can actually improve spectrum access opportunities. Compared with single-optimization method of detection period and detection time, our algorithm can also greatly improve the achievable normalized throughput when CR user detects the channel
Yarn Feeding Change Analysis for Needle Bar Transverse Shifting of Carpet Tufting Machine
Authors: Chen Guang Feng , Zhai Lin Lin , Yang Yan Zhu , Yang Yi , Li Qing Qing
Published: February 2012

The needle bar transverse shifting would likely form the stop mark on the tufted carpet. Focus on this problem, through analysis the change in yarn feeding path and loop pile forming, construct the mathematical model of length change of yarn feeding in path and usage of loop pile forming while needle bar shifting. Base on the mathematical model analysis key influence for yarn feeding path change. The analyze result is useful for yarn feed compensation solution
The Nice Feature of a Sort of Orthogonal Finitely Supported Five-Variant Wavelet Packages
Authors: Gao Hong Wei , Fang Lan Ran
Published: February 2012

In this article, the notion of orthogonal nonseparable five-variant wavelet packages, whi- ch is the generalization of orthogonal univariate wavelet packages, is introduced. A new approach for constructing the wavelet packages is presented by iteration method as well wavelet frames. The orthogonality properties for five-dimensional wavelet packages are discussed. Three orthogonality formulas concerning these wavelet packages are estabished. A necessary and sufficient condition for the existence of the pyramid decomposition scheme of space is presented.
Finite Element Modeling of Shear-Slitting Process
Authors: Ding Mang , Wu Di Ping , Qin Qin
Published: February 2012

Shear-slitting is a sheet metal cutting process used for dividing coiled sheet into narrower coils. In this paper, a two-dimensional finite element model was developed for the calculation of the shear-slitting process by using ABAQUS/Explicit. The shear failure criteria and the element-delete method were adopted to model the material separation. Mass scaling was used to reduce the solution time. The effect of clearance on the burr height was investigated. The simulation results show good agreement with experimental results. The critical clearance values was suggested for decreasing the burr.
Study on Thermal Protection Materials Applied to Electronic Memory Embed in Aircraft
Authors: Wen Feng , Yang Xiao Ping
Published: February 2012

In order to get the perfect thermal protection materials and configuration of the electronic memory the relationship between the object temperature and time during heat transfer and the basic principles of heat and mass transfer for was analyzed. Several kinds of thermal protection structures and materials were simulated by ANSYS 10.0 and validated by experiments. The results demonstrated that nanometer aerogel is a kind of materials when placing it between memory and protective layer, 5 mm thick, makes sure the electronic memory works two hours normally in the environment at 125°C.
Approach for Setting Project Buffer with Engineering Materials Based on the Theory of Unascertained Rational Number
Authors: Li Wan Qing , Zhao Zhe , Meng Ling Yu
Published: February 2012

The paper proposes an approach for setting the size of project buffer based on the theory of unascertained rational numbers and critical chain management. This method applies the optimistic time into programming schedule plan and using the addition operation of unascertained rational numbers to obtain the unascertained schedule plan, to finish and generate cumulative reliability. This technique is applied to calculate the buffer time by using the optimistic construction period and total project period when finishing reliability is 90%. This feasibility of the model has been proved by an example
Overview of Intelligent Design on Mold
Authors: Wang Bin , Chen Jian Jun , Tao Jie
Published: February 2012

Applying Artificial Intelligence technology on mold design can help realize the design automation of mold. Because knowledge-based engineering is an effective intelligent design method, the paper systematically introduced the application and development of knowledge representation, knowledge reasoning, knowledge acquisition and other key technologies of knowledge engineering technology used in mold design field. Finally, the development tendency of mold design based on artificial intelligence was analyzed in detail
The Applied Research of Nano-Material in Athletic Facilities and Sports Equipments
Authors: Ji Yin
Published: February 2012

Nano-material has many unique functions and sports field provides the platform for displaying its excellent function. This paper summarizes the application of nano-material in the construction of sports venue.The main purpose is to provide the certain reference for further application in the sports field in the future.
GaAs/InGaAs Optoelectronic Switch for Triple-Logic Applications
Authors: Yarn Kao Feng , Yang Ming Ju , Chang Wen Chung
Published: February 2012

A new GaAs/InGaAs triangular barrier optoelectronic switch combined with tri-state characteristic is fabricated and demonstrated. Two GaAs/InGaAs barriers are employed to provide potential barriers for electron thermionic emission and hole confinement, respectively. Applying a sufficient DC voltage to this device, a double S-shaped negative differential resistance (NDR) phenomenon with nearly equal switching voltage difference is appeared at room temperature. This unique NDR property can be introduced to triple stable regions into the device circuit design. Based on a proper circuit design with suitable load line, the studied device has potential for triple-logic applications.
Application of Fault Detection Using Ant-Tracking Algorithm: Daqing Oilfield Example
Authors: Zhou Gang , Lei Wei Bing , Zhang Jin Huan
Published: February 2012

The traditional manual fault interpretation is time consuming. A powerful method for rapidly obtaining detailed fault and fracture interpretation from seismic amplitude data was proposed. It can remarkably save time during the fault interpretation task. Moreover, it can easily detect some minor faults that can not be traced manually. This method has been applied to one of Chinese oil reservoirs. The resulting interpretation, in conjunction with fracture information derived from well log measurements are illustrated.
An Extended System Aggregation Method for Hybrid Production Lines with Multiple Failure Rate and Unreliable Limited Buffers
Authors: Liu Jun , Wang Ye Nan , Li Jian Hua , Chen Rui Shen
Published: February 2012

In this study, a new system performance evaluation method is introduced to the two-machine line. After that, the extended system aggregation model is developed and corresponding aggregation formulations are deduced.Different from traditional production models, the production line features unreliable buffers and multiple stochastic failure modes of the machines. The method is applicable to analyzing the cases arising from two or more stochastic events or more complex production lines
Research of Alcohol Test System with Alcohol Material Based on Wireless Technology
Authors: Li Yao Hui , Wu Hong Yu , Wu Yi Zhong , Wang Shu Ting
Published: February 2012

This paper introduces a kind of alcohol test system composed of hardware based on alcohol instrument, and software based on data management, which is the foundation of internet wireless technology transmission platform based on embedded web server. It can provide reliable wireless sensor networks and complete information integration and conformity through sites control platform, present wireless data transmission technology and data management system in order to achieve unified management of information and law enforcement. Practice shows the alcohol test system has obvious advantages with stability, high accuracy, and strong anti-interference.
Analysis on the Factors that Affect the Cluster Development of the SMEs in Jilin Province
Authors: Yao Jie , Gao Wei , Zhang Yan
Published: February 2012

Enterprise Cluster is an effective way for the development of SMEs. Because the economic conditions and constraints are different in different countries and regions, the developing modes of SMEs’ cluster are also different. Only by identifying the constraints that affect the cluster development of the SMEs in Jilin Province can we select the appropriate developing mode of the SMEs’ cluster in Jilin province. This article made deep analysis on the constraints that affect the cluster development of SMEs in Jilin Province from multiple aspects. At last it put forward some countermeasures and suggestions for the cluster development of the SMEs in Jilin Province
A No Interference Optical Image Encryption by a Fresnel Diffraction and a Fourier Transformation
Authors: Wang Huai Sheng
Published: February 2012

A no interference optical image encryption is put forward in this paper. The encrypting process is composed of a Fresnel diffraction and a Fourier transformation. A digital image coded with a random phase plate first takes a Fresnel diffraction. The diffraction function is enlarged and coded with another random phase mask. At last the enlarged function undergoes a Fourier transformation. The real part of the transformed function is defined as an encrypted image. In decrypting process, first the encrypted image takes an inverse Fourier transformation. Then the upper left corner of the transformed function is intercepted. According to the space inversion of the transformed function, if the intercepted function takes an inverse Fresnel diffraction, the original digital image can be restored from the final diffraction function. Because there is no interference process in encryption and decryption, the optical system is relatively simple and the quality of restored image is very good
Digital Audio Watermarking Scheme Based on Independent Component Analysis in Stereo Sound
Authors: Chen Rui , Lan Yu Lin , Asharif Mohammad Reza
Published: February 2012

This paper proposed a digital audio watermarking scheme based on independent component analysis (ICA) in stereo sound. In order to make full use of the multi-channel characteristic of stereo sound, The watermarking embedded into the two channel, half respectively. Also using the multi-resolution characteristic of discrete wavelet transform, performing 3-level DWT in each channel. Selecting the low frequency coefficient appropriately as the embed location to make sure of the balance between the transparency and robustness. The extraction process is similar with ICA’ s goal, it’s used in extraction makes the scheme simple for implementation. The experiment results show that the proposed scheme has good robustness against common attacks, as well as transparency
Preparation of a Polyclonal Antibody Based Indirect Competitive ELISA for Enrofloxacin Residue
Authors: Fan Guo Ying , Jiang Jin Qing
Published: February 2012

A rapid indirect competitive ELISA (icELISA) for the determination of enrofloxacin (ENR) residue has been developed. EDC method was employed to synthesize the artificial antigen of ENR-BSA, and anti-serum produced from rabbits was selected. Based on the square matrix titration, an icELISA method was developed with the polyclonal antibody. The Linear range was from 0.006 to 31.5 ng/mL, with LOD and IC50 values of 0.003 ng/mL and 0.45 ng/mL, respectively. Except for a high cross-reactivity (105.2%) to ciprofloxacin, negligible cross-reactivity to other compounds was observed. The recoveries of ENR were in the range of 98.3-127.5%, 85.7-112.5% and 97.4-103.8% for chicken muscle, liver and kidney, respectively. Therefore, this assay has the potential to be incorporated into a quantitative monitoring program for the rapid screening of ENR residue in food.
Analysis of Accident in Electrical Engineering
Authors: Chen Long , Xie Ke Fan
Published: February 2012

This paper conducts a case statistics analysis of 199 mega-accidents in electrical engineering that occurred in China to examine the causes of the accidents. The paper carries out a classification of the mega-accidents in electrical engineering, and conducts a three-dimensional analysis of the accident risk in electrical engineering. In the three-dimensional of material, organization and individual layers, the dispersion of accidents has certain characteristics. This paper provides analytical support to electrical engineering management and accident prevention, and carries out a typical case analysis
Underwater Electromagnetic Sources 2-D DOA and Polarization Estimation
Authors: Zhang Zhen Bin , Li Bin
Published: February 2012

With the development of ocean exploration and research, the precise estimation of underwater electromagnetic sources’ DOA and polarization has become an essential research topic. An electromagnetic vector sensor can measure all six electromagnetic field components of the incident wave field. Thus, it explores not only the DOA of the signal but also the polarization diversity which represents electromagnetic sources’ specific distribution. TLS-ESPRIT algorithm is based on rotation invariant of two signal subspaces. It utilizes a pair of temporally displace data sets collected form a single electromagnetic vector sensor. The parameter estimates are obtained through Poynting vector that is cross-product operation of each signal subspace eigenvector of the data correlation matrix. This method requires no priori knowledge of signal frequencies, suffers no frequency ambiguity, can resolve up to five uncorrelated monochromatic underwater sources. Simulations illustrated the efficiency of the algorithm.
The Design and Implementation of ECC High-Speed Encryption Engine Based on FPGA
Authors: Liang Wei , Xu Jian Bo , Huang Wei Hong , Peng Li
Published: February 2012

Network security technology ensures secure data transmission in network. Meanwhile, it brings extra overhead of security system in terms of cost and performance, which seriously affects the rapid development of existing high-speed encryption systems. The existing encryption technology cannot meet the demand of high security, low cost and high real-time. For solving above problems, an ECC encryption engine architecture based on scalable public key cipher and a high-speed configurable multiplication algorithm are designed. The algorithm was tested on FPGA platform and the experiment results show that the system has better computation speed and lower cost overhead. By comparing with other systems, our system has benefits in terms of hardware overhead and encryption time ratio
The Fabrication Study of Branched Cathode Electrode for Field Emitter in a FED Panel
Authors: Li Xiao Quan
Published: February 2012

Using carbon nanotubes as field emitters, the field emission display panel with branched cathode electrode was fabricated. For the cathode faceplate, the branched cathode electrode was composed of the emitter conducting layer and the emitter supporting layer. On the emitter supporting layer surface the carbon nanotubes field emitters were prepared, and the emitter conducting layer would be covered with the emitter insulation layer. The applied cathode potential would be conducted by the emitter conducting layer, which could decrease the additional voltage drop. The good field emission characteristic for the fabricated field emission display panel was confirmed.
Additive-Effects on the Morphological and Structural Characteristics of Matt Tin Electrodeposits from a Methansulfonate Acid Bath
Authors: Long Jin Ming , Zhang Zhu , Guo Zhong Cheng , Zhu Xiao Yun
Published: February 2012

The methansulfonate acid electrolyte is a new type of plating baths which has some advantages such as friendly to environment, stability and outstanding electrical conductivity. In this work, the effect of three organic additives (nonionic surfactant Triton X-100, a weak organic acid (additive A) and an organic sodium salt (additive B)) in stannous methanesulfonate baths on tin electrodeposits were studied by SEM and XRD. The results show that the Triton X-100 plays an important role in improving the coating qualities and promoting the densification of crystalline structure. Under the synergetic action of additive A and additive B in the presence of Triton X-100 a smooth, fine-grained matt tin coating which has certain preferred orientations of lattice plane, could be obtained on copper substrate.
Influence of Substrate Etching on Structural and Optical Properties of ZnO Nanorods Grown by Hydrothermal Method
Authors: Fu Qiu Ming , Wu Jian Peng , Ma Zhi Bin , Tu Ya Fang
Published: February 2012

ZnO nanostructures were prepared on Si and AlN substrates with and without etching by hydrothermal method. The influences of substrate etching on the morphology and structure were investigated by scanning electron microscopy, X-ray diffraction, Raman microscopy, and photoluminescence spectrum. The results show that the morphology and the photoluminescence properties of ZnO nanorods are significantly influenced by substrate etching.
Piezoelectric Power Transceiver with Ultra-High Isolation
Authors: Shao Wei Wei , Pan Cheng Liang , Ma Yu Ting
Published: February 2012

An electric power transceiver with ultra-high isolated is presented in this paper. Two pieces of piezoelectric elements serving as energy transmitter and energy receiver are attached to two ends of a slender glass beam, respectively. The slender glass beam with dimensions of 500 mm(L)×20 mm(W)×2 mm(T) is used as the media of vibration to realize wireless power transmitting. A distance of 396 mm between the two piezoelectric elements ensures an ultra-high isolation between the input and output circuit. The system is designed and analyzed by finite element method. Experiment tests are also conducted to investigate the performance of the transceiver. With a matched load resistance of 500 Ω, the transceiver can work continuously and stably with an output power of 3 W (no heat sinking) and an efficiency of 60%.
The Design of Magnetorheological Fluid in the Auto-Press Clutch
Authors: Zhao Dong Mei , Liu Xue Peng
Published: February 2012

Magnetorheological fluid basic working model and calculation model is firstly introduced. Then the auto-press clutch dynamics theory is analyzed. Clutch magnetic circuit is analyzed by ANSYS software, which proves the feasibility of this design
The Design of Artificial Intelligence Control System for LED Based on ZigBee and Light Emitting Diode Materials
Authors: Zhang Yu Jie , Liu Yun
Published: February 2012

Due to the defects of traditional LED intelligent control system, the design scheme of artificial intelligence control system for LED based on ZigBee was proposed in this paper, which described the hardware and software design method of the system. The system used STM32 as the core and embedded BP neural network program in LabVIEW software, which can achieve the optimal intelligent control for LED under the LabVIEW development platform through ZigBee wireless network, including the functions of constant intensity of illumination lighting, compensation lighting, adaptive lighting and artistic lighting according with human body visual comfort. The system can be widely used in large lighting place and intelligent household application field.
Effects of Spraying Zinc and Multiple Nutrient Elements on Quality of Aromatic Rice
Authors: Xu Zhen Jiang , Xiao Li Zhong , Liu Hong , Ren Yong Hao , Li Zhi Lin
Published: February 2012

Using two conventional aromatic rice cultivars and one hybrid aromatic rice combination, effects on the quality of aromatic rice were studied by spraying zinc and other multiple nutrient elements under the field experiment.The results showed that by spraying Zn, ZnMg，ZnMgK and ZnMgKFeCu MoCoB on heading stage and followed on the 7th and 14th day after the heading stage, the rate of brown rice, milled rice and head rice, the score of aroma and eating and the content of protein were improved, the chalky rice rate, chalkiness and amylose content were reduced and at the same time the length of rice gel was elongated, therefore the processing quality, appearance quality, cooking and eating quality and nutrient quality of aromatic rice were improved to some extent. The highest quality of aromatic rice was achieved by spraying the combination of Zn and all the other multiple nutrient elements, followed by spraying ZnMgK, ZnMg and Zn solely.
A Hysteretic Current Controller for Active Power Filter (APF) with Constant Frequency
Authors: Song Qing Shou
Published: February 2012

In accordance with the advantage of conventional hysteresis current control method, this paper advances a novel control method for APF. In conventional hysteresis current control, the hysteresis band (HB) is fixed and actual compensating current is limited in a fixed HB. Firstly, the connection between HB and switching frequency must be found correctly. Then, the variable hysteresis band current controller is designed according to the connection. Finally, the Matlab simulation results show that the switching frequency of VSI is held nearly constant and the proposed controller can track reference current well[1]. The problems of increasing switching losses and audible noise which happened in high-frequency state can be resolved in conventional hysteresis current control.
Motion Error Analysis for A 3-DOF Parallel Robot
Authors: Hu Shi Jie
Published: February 2012

Motion accuracy is one of the key point for parallel robots. In the paper, error modeling and motion error analysis of a 3-DOF parallel robot 3-PRS has been studied in this paper. First, the 3-PRS parallel robot and its kinematics has been introduced with its kinematics analysis. Based on the reverse kinematics analysis of 3-PRS, the motion error has been modeled. Then, motion error analysis has been performed for 3-PRS. The analysis results show the clear tendency of structural error effects on the motion errors.
Sample Description of Type 2 Diabetes Mellitus Rats Metabonomics Data by Using Multivariate Data Mapping Methods
Authors: Zhang Yu , Shi Zhong Feng , Ji Xing , Feng Yi Fan
Published: February 2012

Metabonomics is widely used in the study of Type 2 Diabetes Mellitus, it is important to extract information from the metabonomics data. In this article we introduced four mapping methods for sample description. Type 2 Diabetes mellitus Model was made on rats, and Rosiglitazone was used as positive drug. Data obtained by using UPLC­Q­TOF/MS method were classified into three groups (normal control group, DM group, Treatment group). R software was used for Principal Component Analysis (PCA), Sammon mapping, Kruskal-Wallis mapping (isoMDS) and Independent Component Analysis (ICA). The results showed that isoMDS and PCA methods got better values than the rest methods, meanwhile ICA plot did not show any useful information. These results demonstrate the capacity of multivariate data mapping methods in metabonomics data.