bluuebunny/crossref_metadata_2025 huggingface dataset:
The Terminal Design of Archives Temperature and Humidity Based on WIA Wireless Networks
Authors: Huang Jian Long , Wang Zhong Feng , Li Li Gang
Published: January 2015

In order to improve the real-time and accuracy in the archives collects the data of temperature and humidity. Reducing fire hazards which caused by wiring. We design an intelligent temperature and humidity data collection terminal which based on WIA wireless network. This paper mainly describes the terminal equipment hardware design and software workflow and so on.
The Data Mining Application Research and Resolution Based on Network Information Retrieval
Authors: Xu Jian Hao
Published: January 2015

With the rapid development of modern computer technology, network has become people to pass information to each other a fast channel. The network information resources is very large, however, the people to find information resources needed to bring a lot of inconvenience. After recent years of rapid development of network information retrieval, on solving this problem have played a role, to a certain extent, meet the needs of the user to retrieve information, but in the test or not on the standard rate. This article through to the concept of data mining method, discusses the application of data mining in current network information retrieval. Data mining is analyzed with the combination of information filtering and visualization technology, thus improve the efficiency of network information retrieval, make up for the inadequacy of existing retrieval tools.
Intrusion Detection Technique Based on Improved Intuitionistic Fuzzy Neural Networks
Authors: Lei Yang , Ma Jing
Published: January 2015

At present, the issue of intrusion detection has been a hot point to all over the computer security area. In this paper, a novel intrusion detection method has been proposed. Unlike the current existent detection methods, this paper combines the theories of both intuitionistic fuzzy sets (IFS) and artificial neural networks (ANN) together, which leads to much fewer iteration numbers, higher detection rates and sufficient stability. Experimental results show that the now method proposed in this paper is promising and has obvious superiorities over other current typical ones.
Research on the Function and Application of Data Structure
Authors: Ye Rong
Published: January 2015

Through an in-depth study of the research content, basic concepts and applicable typical examples of data structure, it is found out that data structure is powerful in the process of information representation and information processing with a computer with the increase of information and expansion of information range and could abstract a mathematical model from concrete things and solve practical issues in the work and life.
Application of New Inhibitor on Separating Copper-Molybdenum Ore from Jinping
Authors: Xiao Ri Peng , Yang Bo , He Tao
Published: January 2015

Based on the symbiotic and dissemination relationship of a copper-molybdenum ore in Tibet,developed a beneficial flotation flowsheet —first step was copper-molybdenum mixed flotation and then copper-molybdenum were separated. Copper-molybdenum mixed flotation used conventional flotation reagents. Copper-molybdenum separation used new reagent-- HX-1 for copper inhibitor. Experiments show that HX-1 was good to the copper-molybdenum separation. The content of copper was decreased to 0.03% in molybdenum concentrate.
Indirect Determination of Acetylcysteine in Pharmaceutical Sample by Discoloration Spectrophotometry Using Fe(III)-Tiron System
Authors: Tu Chang Qing , Wen Xin Rong
Published: January 2015

Fe (Ш) can be reduced to Fe (II) by hydrosulfuryl (-SH) in acetylcysteine molecule,and then using tiron as chromogenic reagent of Fe (Ш),and the content of acetylcysteine is determinated indirectly through determinating the surplus content of Fe (Ш) in the system.An accurate fast spectrophotometric method for the determination of acetylcysteine by discoloration spectrophotometry using Fe (Ш)-tiron system has been established.This proposed method had been successfully applied to determinate of acetylcysteine in real pharmaceutical.
Izod Impact Strength of Acrylonitrile Butadiene Styrene (ABS) Matetials after Used in UP2! 3D-Printer
Authors: Khuong Tran Linh , Gang Zhao , Farid Muhammad , Yu Rao
Published: January 2015

3D printing technology which is also named as fast prototypinghas shown excellent resultsto manufacture more complex and sophiscated products;hence is increasingly being developed and widely applied. Fused Deposition Modeling (FDM) is one of the most popular 3D printing techniques available today because it's simple and easy to make, these cheap printers nowadays are using this technology. Acrylonitrile Butadiene Styrene (ABS) is the material which is most commonly used among three kinds of common materials of FDM technology ABS, PLA, PVA. To design a patternfor using FDM technology using the printer UP2in particular, the exact calculations and the mechanical properties of the material ABS are required.The article focuses on testing the Izod impact strength.
Research on Correction for Errors of TV-Guided Projectile Caused by Ballistic Vertical Wind
Authors: Hou Ming , Wang Heng Xin , Wang Ji Wu , Fu Xing Zhen
Published: January 2015

According to the principle of TV-guided projectile, the impact of ballistic vertical wind for guidance precision in TV guidance segment was analyzed, and the distance errors caused by ballistic vertical wind was calculated by simulation, then error-correcting formula was fitted by binary quartic polynomial. The fitted values was compared with firing table values, the results prove fitting formula can meet the accuracy requirements, so the error-correcting formula can provide a theoretical basis and technical methods to improve the accuracy of TV-guided projectile.
Simulation of Ink Transfer Characteristics for the Anilox
Authors: Chen Jia Xiang , Tang Zheng Ning , Wang Sha Sha , Miao Bin Ying
Published: January 2015

Anilox is the most important part in flexography, we simplified the structure of anilox roller into an axisymmetric trapezoidal groove, while established a numerical simulation of the ink transfer process by using the finite element method. We had done research on ink transfer characteristics in the flexographic printing process. The ink transfer ratio decreased when the upper plate contact angle increased, while increased when the dovetail groove contact angle increased; the aspect ratio also have impacts on the ink transfer.
Studies of Microstructures and Properties of AZ91D Alloy Based on the Rheoforming Process
Authors: Zheng Xiao Ping , Ji Ze Sheng , Zhang Wei Wen , Shao Ming
Published: January 2015

The semi-solid rheoforming process of AZ91D alloy with 9 % plastic deformation was investigated. The effect of holding time on the rheoforming formability of AZ91D alloy was analyzed. The relationship between holding time and microstructure, mechanical property was also researched. The results show that with increasing of holding time from 0 to 60 min at 575 °C, the filling distance increases firstly and then decreases, the solid fraction decreases firstly and then increases, the tensile strength and elongation are also increase firstly and then decrease. However, the increasing of holding time would lead to shape factor decreasing but particle coarsening. When holding time is 30 min, the solid fraction is lowest and the filling distance increases greatly. Compared to the conventional casting sample, the tensile strength and elongation of the rheoforming parts increase 43.9 % and 187.5 %, respectively.
Study on the Adsorption Kinetics and Isotherms of Cr(VI) of PVDF/ATP Hybrid Membrane
Authors: Lv Chao , Zhang Gui Fang , Liu Xing Tian , Qin Ying Xi , Shao Lin , Zhao Yi Ping , Chen Li
Published: January 2015

Poly (vinylidene fluoride)/attapulgite (PVDF/ATP) hybrid membrane was prepared for removal of Cr (VI) ions from wastewater with PVDF as matrix and ATP as adsorbent which was functionalized by cetyl trimethyl ammonium bromide (CTAB) and then modified by tannins (TA). The adsorption kinetics and equilibrium isotherms of the hybrid membranes were particular concerned. The results indicated that the PVDF/ATP membrane displayed a good adsorption capacity for Cr (VI) ions, the adsorption equilibrium could be established within 5 hours and the maximum adsorption capacity was 21.4 mg/g. The adsorption kinetics fit well with Lagergren second-order equation and the adsorption isotherms can be well described by Langmuir and Freundlich models.
Study on γ-Fe2O3 Magnetic Fluid by Thermal Oxidizing of Fe3O4 Nanoparticles
Authors: Zheng Hang , Shao Hui Ping , Zhao Zi Fen
Published: January 2015

In this paper, Fe3O4magnetic nanoparticles were synthesized by chemical co-precipitation method and their surface was modified by sodium oleate. The γ-Fe2O3magnetic nanoparticles were achieved by thermal oxidizing of Fe3O4. The γ-Fe2O3magnetic fluid was prepared by using silicone oil as carrier liquid and oleic acid as surface modification agent, and the saturation magnetization of prepared γ-Fe2O3magnetic fluid hits 14.25emu/g.
The Analysis of the House Moisture Treatment in Coastal Areas
Authors: Ma Jie , Huang Min Yuan , Jiang Xiao Min , Li Zhen Chong
Published: January 2015

Jiaodong Peninsula surrounds on three sides by the sea, its air humidity in summer is larger than other cities. And Rongcheng is located at the eastern end of Jiaodong Peninsula,as a representative of the peninsula city ,its require in the house moisture treatment measures is much higher .we need break through not only from the building materials , but also from other angles, providing little help to improve moisture measures. We mainly consider from two aspects of the apartment layout and housing towards, and do our best to put forward a more targeted and more humane damp proof measures in order to promote the local moisture treatment measures to improvement, so as to promote the moisture treatment measures to further improvement in the coastal area of Jiaodong Peninsula.
Ultrasonic Assisted Extraction Process Optimization of Malabar Spinach Seed Oil and GC-MS Analysis
Authors: Liu Li Na
Published: January 2015

This paper selects petroleum ether as an extraction solvent, use ultrasonic to assisted extraction of Malabar spinach oil, research of extraction temperature, ultrasonic power extraction, extraction time, solid-liquid ratio on Malabar spinach oil extraction rate by orthogonal, extract rate was used as the main criterion to determine the optimum process conditions. The results showed that: the optimum conditions was ultrasonic power 135W, extraction temperature 40 °C, extraction time 25min, solid-liquid ratio 1:10. Identified 19 kinds of main ingredientby GC-MS analysis.
Damping Effect of Suspended Floor in Huge Frame Constructions
Authors: Zhang Wen Jin , Zhang Yu Xin , Chen Xi
Published: January 2015

This paper proposes a new idea about damping of suspended floor in huge frame constructions. Experimental program and physical models were made, and then a lot of vibration tests by controlling acceleration and amplitude were taken respectively. The result shows that suspended floor has damping effect in a certain area and the damping degree is related to acceleration and amplitude. It also illustrates that changing frequency has more remarkable effect than changing amplitude.
Investigation on Z-Scan and its Application of Nonlinear Measurement
Authors: Feng Zhi Shu , Li Xiao Ming , Jing Xian Yong , Lan Zhi Huan , Ning Cheng Da
Published: January 2015

The principle of Z-scan and its application on nonlinear refractive index and absorption coefficient measurement are introduced. Besides, two methods of improving sensitivity of Z-scan are described.
Linearization of High Precision Human Body Temperature Measurement Circuit Based on NTC Thermistor
Authors: Li De Jun , Xing Chi Gang
Published: January 2015

In the micro-climate cloth researching, we usually need to accurate measuring the body temperature, in this paper we choose the constant-voltage temperature measuring system based on the NTC thermistor to measure the temperature. Because the resistance of the thermistor and the temperature is not linear, so this will cause the output of the measurement circuit is not linear. In actual measurement we usually require the output of the circuit varies linearly in the required range. This paper mainly research the linearization problem of the NTC thermistor bridge circuit in the required temperature range.
Deformation Measurement and Pointing Model Analysis of 25m Antenna
Authors: Hu Kai Yu , Yusup Ai Li , Xu Qian
Published: January 2015

The pointing of an antenna always exists deviation due to track deformation, gravity and thermal influence. Through long time observation, we find that sunlight also has some influence on antenna structure. In order to get the antenna pointing deviation in the effects of the sunlight of 25m antenna in Urumqi, we use the frame-typed level and thermometer to make a week’s measurement about the temperature around the antenna and the antenna tilt. The measured data was analyzed and combined with the track deformation data, and the pointing error fixed model as well as the thermal load deformation model were built. The measured data was fitted by the two models, and the result shows that the model can well reflect the pointing error and thermal load error, thus can give a better understanding of the antenna deformation, and also can give some good reference to antenna pointing calibration and the antenna’s reconstruction.
Comparative Analysis of Point to Point and Cascade Line Monitoring System
Authors: Wu Xin Ling , Zhao Min , Zhang Ya Chen , Jin Peng
Published: January 2015

There are two modes of line monitoring system application in the rural distribution, the point to point and the cascade. Comparison of two modes’ construction architecture and the advantages, disadvantages are analyzed. It puts forward two kinds of modes application limitations. The construction area according to the matching function, scheme and the device type should be present.
Design of Remote Fault Diagnosis System for Automobile Engine Based on Internet
Authors: Si Chuan Sheng
Published: January 2015

This paper is based on the engine fault diagnosis technology and the network technology, it carries out and uses the Internet network data transmission engine to obtain technical parameters of the engine,fault diagnosis of engine remote.The system can discover the fault of automobile engine and to determine repair method, the fault and exclusion, effectively improve the flexibility and accuracy of fault diagnosis, remote resource sharing.
Design on Intelligent Video Surveillance System Based on Target Identification Algorithm
Authors: Meng Zong Jie , Jie Cai
Published: January 2015

This paper makes study on the adjacent frame difference and algorithm realization of SOM i8dentification after improvement, of which it includes motion detection, target identification; the realized video surveillance module makes up the intelligent video surveillance that can reconstruct platform. Motion detection module adopts algorithm of adjacent frame difference after improvement, which can correctly mark the motion object. Target identification module adopts self-mapping nerve net after improvement, it is easier for hardware realization, and meanwhile the accuracy rate of identification is equal to classical algorithm.
Research on Monitoring System of Water Supply Pipe Network Based on GPRS Technology
Authors: Lin Ying Jian , Zhao Ying
Published: January 2015

Urban water supply pipe network is an important part of municipal infrastructure systems, is the basis for the survival and development of the city. How to guarantee the safety operation of the water supply pipe network, to reduce water supply pipe network leakage rate, to prevent explosion occurred, and fundamentally improve the water supply pipe network operation management level, become the water supply enterprise high attention and urgent problem to be solved. Therefore, this paper studies monitoring system of water supply pipe network based on GPRS. First, the characteristics and the importance of the water supply pipe network, so using GPRS technology. Then, detailing the characteristics and advantages of GPRS technology. Secondly, introduces the composition of the urban water supply pipe network monitoring system. Finally, the realization of specific functions will be described. Application of monitoring system for real-time monitoring, fully guaranteed the security of the water supply system.
Obtain the Solar Direction by the Skylight Polarization Degree Measurement
Authors: Li Lei , Zhou Jun , Huang He
Published: January 2015

Skylight polarization pattern is used as an important navigation clue for desert ant and bees. The paper will present a new solar direction extracting method based on the polarization degree measurement. Two kinds of solar direction calculation model will be derived, one is by the polarization degree measurement of two observation directions, the other one is by the polarization degree and polarization E-vector direction measurement of the same observation direction.
A Multisection Snake Like Manipulator with Rear Actuators: SnakeHelper
Authors: Zhang Zhen , Cao Ya Fei , Zhang Yan An , Shang Hong
Published: January 2015

In the paper, a multisection snake-like manipulator named SnakeHelper is described. For rescue task, the manipulator is designed with cable driven and rear actuators. First, the mechanism design is presented. The manipulator consists of rear actuators, links, joints and cables. Then, some considerations on mechanism design of the device are given. The moment of the motor is calculated. The rotatory angle of each joint is also given against design parameters. At last, the kinematics analysis of the manipulator by D-H method is given.
Directional Search for Spiral Trajectory Extraction
Authors: Shao Xiao Fang , Chen Hong
Published: January 2015

Spiral trajectory curves often occur in modern production lines. In this paper we propose a curve inference method for spiral trajectory extraction. Based on the tensor voting result of the original images, the method performs a post-processing stage and a directional neighborhood searching process which takes into account the turning angle of the pixels on a certain curve. At last the method is tested on several real images.
Research of Isokinetic Test on the Strength of Shoulder Joint of Elite Female Water Polo Athletes
Authors: Wang Xiao Yong
Published: January 2015

Study Objective:The concept of isokinetic exercise was first proposed by Hislop and Perrine. Cybex Company of the United States created the first isokinetic muscle strength training instrument in the early 1970 s, after then many countries in the world has begun the application and research of the isokinetic muscle testing, and all acknowledged that it is a major innovation in the field of muscle strength testing and training. The isokinetic muscle strength test can evaluate the muscle characteristics under different contracting such as contraction centripetal and centrifugal contraction.
Manufacturing Process of Terahertz Radar Reflector Based on Ultra-Precision Machining Technology
Authors: Li Di , Luo Song Bao , Zhang Jian Ming , Xu Chang Yu , Pang Chang Tao
Published: January 2015

This paper presents a technique for processing Terahertz radar reflector by SPDT (Single Point Diamond Turning) based on LODTM (Large Optics Diamond Turning Machine). This technique applies single crystal diamond cutting tools for ultra-precision machining, and thus could obtain high-precision optical mirror, which could be used as the Terahertz radar reflectors. An experiment for aluminum sample had been done to demonstrate the availability of the technique, and a pair of Terahertz radar reflectors were obtained. The precision of the reflectors, detected through precision coordinate measuring technology, was better than the designed requirement. The experiment results showed that Terahertz radar reflectors generated by deterministic ultra-precision machining technique based on LODTM would have advantages in figure accuracy and roughness and so on, which could be helpful to improve the precision and low the cost of Terahertz radar system.
Application of Wind Profiler Radar in Guided Missile Range Experiment
Authors: Yang Qing , Wu Ya Ke , Yang Zhao
Published: January 2015

The high altitude meteorological data is the basic parameters for weapon system trajectory calculation, firing ballistic correction, and ballistic standardization. Measurement range weapon testing is essential to evaluate the final results, so it is accurate or not will directly influence the test. This paper outlines the wind profiler radar in guided missile range experiment and the necessity of working mechanism, and gives the testing environment of radar range test application and erection of wind profiles and parameter setting, finally derived horizontal wind speed measurement precision, theoretical radial velocity measurement accuracy, as well as the theoretical horizontal wind. Making the range test of wind profiler radar measured data can fit the fast and the theoretical solution of data, in order to test application range stroke profile radar has a more comprehensive understanding, and application of more mature and rational.
Heat Transfer Analysis of Silicone Oil Fan Clutch Based on Finite Element Simulation
Authors: Li Lin , Liu Xiao Nan , Feng Xiao Lin
Published: January 2015

Silicone oil fan clutch uses viscous shear force of silicone oil to transfer torque. Friction of silicone oil generates a lot of heat. Thermal analysis is an important link in the design and optimization of the clutch performance. The mathematical model of thermal analysis for silicone oil fan clutch is proposed. The analysis is focused on the advantages of thermal boundary layer FEA (nonlinear finite element analysis) method in the clutch thermal property. Comparing the calculated results with the experimental data, the feasibility and accuracy of the FEA method was confirmed. The main factors influencing on the thermal characteristics of silicone oil fan clutch are studied.
The Implementation of Skyhook Control for Semi-Active Suspension Based on Vi-CarRealTime
Authors: Bi Bo Wei , Xiao Fang
Published: January 2015

The research of semi active suspension control strategy once was a hot point in the field of automobile suspension [2, 3], but it is difficult to achieve for most of them. I choose VI-CarRealTime to build vehicle model based on ADAMS vehicle model. Kalman Filter designed based on 1/2 vehicle model supply control signals for controller. Considering characteristics of CDC damper, Skyhook control strategy is applied for simulation, the simulation results show that, Skyhook Control can improve vehicle ride comfort in CDC damper control range.
Research on Flux Damping Control Strategy of DFIG during Grid Voltage Dips
Authors: Zhang Xu Guang , Xie Zhen
Published: January 2015

A flux damping control strategy was proposed to accelerate the decay of stator flux and restrain stator, rotor current and torque oscillation caused by grid voltage dips. Firstly, this paper analyzes the simplified mathematical model of DFIG during symmetrical voltage dips. Then, the mechanism of flux damping control strategy to restrain stator, rotor current oscillation and increase flux damping was analyzed. The flux damping control strategy can increase the damping of stator side, which accelerates the decay of the stator flux natural component and improve the dynamic LVRT performance of DFIG. The correctness and effectiveness of this method is verified by MATLAB/Simulink simulation results.
PID+CMAC Neural Network Control of Micro Positioning Platform
Authors: Yang Xiao Jing , Li Yao
Published: January 2015

Because of some intrinsic properties of the PZT actuator, such as hysteresis, creep and nonlinearity effect, it’s difficult to achieve satisfactory results and control precision for conventional PID controller. In order to improve the control precision of the PZT driven of micro positioning platform, we proposed a CMAC neural network based on PID control scheme, which has the characteristics of realizing feed-forward control and obtaining the inverse dynamic model of controlled object by the CMAC neural network controller, and realizing feedback control by conventional controller, which can ensure the system stability and suppress disturbance. Form MATLAB simulation results, it demonstrates that the CMAC+PID control algorithm can be able to improve the control precision and response time of the system, and enhance the anti-interference ability and robustness, comparing with the traditional digit PID control algorithms.
The Automatic Gain Control of the Digital Reconnaissance Receiver
Authors: Jiang Hai Qing , Zou Guang Liang , Liu Ying
Published: January 2015

On the basis of a brief introduction of how the automatic gain control (AGC) of the digital reconnaissance receiver works,this article proposed a digital AGC design method based on the digital processor parts, which provide a guarantee for the digital reconnaissance receiver to work in the complex external electromagnetic signal environment. The engineering implementation of AGC is introduced with specific projects. Both simulation and engineering practice verify the feasibility of this program.
The Design of Seeding Machine Based on the Motion Controller
Authors: Zhang De Hui , Wu Xiao Qiang
Published: January 2015

Aiming at the weakness of application of the traditional control method in seeding machine, a king of seeding machine used motion controller as the core was designed. The seeding machine can realize the automation of the whole seeding process, and it can automatically compensate for errors, which ensures the sowing quality. The method that uses the motion controller as the control core provides a new way of automation control for seeding machine.
Experimental Investigations on the Grinding Temperature of the Superhard Grinding Wheel with Ordering Abrasive Pattern
Authors: Xiang Long , Lu Yu Shan , Wang Jun , Liu Zhi Zhen , Zhang Shan , Ma Fei
Published: January 2015

In the area of grinding, ordering the abrasive gains is one of the key ways to improve the grinding wheel performance. In this article, the experimental investigations on the grinding temperature were carried out including using the superhard abrasive grinding wheel with phyllotactic, matrix, dislocation and disordered configuration, the temperature distribution of the grinding workpiece surface and the effects of grinding parameters on the temperature of workpiece surface have been obtained. The experimental results showed that the grinding temperature can be reduced efficiently by choicing the grinding wheel with abrasive phyllotactic pattern.
Research on Intelligent Campus System Construction Based on RFID
Authors: Chen Jing Lei , Chen Heng , Lei Teng Fei
Published: January 2015

With the continuous development of society and the increasingly update as well as the thought of science and technology progress, we learn more and more about living fast, energy saving, smart. The traditional mode of the campus management can't meet the requirements of The Times, so should be an intelligent campus system. This article analyzes the performance characteristics and development direction of RFID to its working system and based on the principle role in the field of campus , from identification campus , library management, student attendance in class named have done a detailed explanation.
A Wavelet Based Directional Algorithm for UHVDC Line Protection
Authors: Li Ya Jie , Tan Jian Cheng , Zhang Shu Xian
Published: January 2015

When fault distance is greater than a certain value, attenuation of high frequency fault signal over the line is greater than what the DC line boundary is subject to. To sensitively detect a fault and improve the reliability of UHVDC (Ultra High Voltage Direct Current) transmission line protection, a new protection scheme based on wavelet based direction element is proposed, where directional element and attenuation of high frequency energy are used to identify an internal fault. Extensive simulation results show that the proposed protection scheme is able to sensitively detect high impedance faults, identify the faulty pole.
Study on AC Artificially Pollution Flashover Performance of Long Porcelain Insulator String
Authors: Shi Yan , Hu Gang , Chen Yong
Published: January 2015

In this paper,the relationship between 50% ac flashover voltage (U50) of long porcelain insulator string and ρESDD and ρNSDD was analyzed based on experimental results. It was shown that the relationship between U50 and ρESDD is the same as the one between U50 and ρNSDD, in which the U50 reduces with the increase of ρESDD by a power function, and the influences of ρESDD and ρNSDD on U50 are mutually independent. By using the least square method, the value of exponent of a and b were determined.
A Symmetric Image Encryption Scheme Base on Hyperchaotic System
Authors: Song Tao
Published: January 2015

In recent years, chaos-based image encryption technologies have been widely studied to meet the increasing demand for real-time secure image transmission applications. To overcome the drawbacks of small key space and weak security in many existing schemes based on low-dimensional chaotic maps, this paper suggests a security improved scheme with a permutation-diffusion architecture. In the permutation stage, baker map is employed to shuffle the pixel positions. In the diffusion stage, the value of each pixel is altered by using a key stream derived from hyperchaotic system. Compared with ordinary chaotic systems, hyperchaotic systems, with more complex dynamical behaviors and number of system variables, offer greater potential for secure cryptosystem construction. Extensive security analysis has been performed on the proposed scheme, including the most important ones like key space analysis, statistical analysis and key sensitivity, which has demonstrated the satisfactory security of the proposed scheme.
A Novel Texture Extraction Method for Digital Radiography
Authors: Qiao Shuang , Sun Jia Ning , Li Jian , Huang Ji Peng
Published: January 2015

As known, there always exist severely degradation problems in digital radiography. How we can extract necessary textures from degraded radiographic images is the post-processing key. Local binary pattern (LBP) is a well-known method, which is widely used in fast image texture extraction. However, for noisy images, LBP can’t work well due to its sensitivity to details. On the other hand, as one of the important shock filters developed in recent years, complex shock filter possesses excellent capabilities in textural image processing. Here, by combining complex shock filter with LBP, a novel fast and efficient method, C-LBP is presented for texture extraction of degraded radiographic images. Experimental results show that comparing with traditional LBP, C-LBP not only distinguishes between noise and details in radiographic images, but also extracts image textures efficiently and rapidly, which plays an important role in developing nondestructive detection technique by low-dose ray radiography.
Hash Authentication Algorithm of Compressed Domain Speech Perception Based on MFCC and NMF
Authors: Huang Yi Bo , Zhang Qiu Yu , Yuan Zhan Ting , Liu Yang Wei
Published: January 2015

A Hash authentication algorithm of speech perception based on MDCT coefficients was proposed to solve the problems of large amount of computation and bad real-time capability when using traditional authentication algorithm in compressed domain speech. Firstly, the algorithm extracts MDCT coefficients by partly decompressing speech sound in MP3 format. Then MDCT coefficients of each frame of speech are processed by Mel filter in the compressed domain, forming the 15-dimensional MFCC coefficient vector. Finally the perceptual Hash string is generated by Hash structure. The perceptual Hash string can perceive the content of voice authentication. Experimental results show that the algorithm keeping on content presents the strong robustness and good real-time capability.
Algorithm for Automatic Island Segmentation and Identification Based on Narrow Band Deformable Model in UAV Optical Remote Sensing Image
Authors: Zhao En Wei , Yang He Meng , Wu Xiao Jie , Zhang Zeng
Published: January 2015

The island survey is important in economic and strategic field, and in recent years the use of remote sensing technology becomes the mainstream in island investigation. As an effective way for improving the efficiency and accuracy of island survey, the automatic segmentation and recognition algorithm has greater significance. For the difficulty in application of deformed model to high-resolution remote sensing images, the segmentation framework of global initial segmentation and local extractive segmentation based on narrow band deformable model is proposed. Based on the sea and land extraction the island initial segmentation is accomplished, and then the narrow band deformable model is used to increase the accuracy of segmentation. Finally the double rings feature of island is used to improve the quality of the segmentation.
Surface Feature Extraction Based on Curvelet Transform from Point Cloud Data
Authors: Yang Hong Juan , Chen Ji Wen , Zhang Yun Chu , Xu Xiao Dong
Published: January 2015

Aiming at multi directions analysis problem of surface feature extraction from point cloud data, Curvelet transform is introduced to multi directions analysis of point cloud data. Based on the preprocessing of location and expansion, second-generation discrete Curvelet transform is used to analyze point cloud data. Curvelet transform coefficients are processed to enhance the contour of point cloud data. Nonlinear function is used to process Curvelet transform coefficients of coarse layer. Compromise for soft and hard thresholds is used to process Curvelet transform coefficients of detail layer. Piecewise nonlinear function is used to process Curvelet transform coefficients of fine layer. The data point is reconstructed from the enhanced Curvelet transform coefficient with Curvelet inverse transformation. Initial surface feature is achieved with edge detection. The precise surface feature is achieved with morphological dilation and erosion to filter edge without real shape significance. Example of part point cloud data of brake shell shows the proposed surface feature extraction method can accurately extract surface feature from data point.
Designed Textile Reinforced Concrete Elements for Architectural Facade Applications
Authors: Pidun Kevin , Schulze Michael
Published: January 2015

By now the application of Textile Reinforced Concrete (TRC) for facade constructions can be considered as state of the art. Especially ventilated curtain walls made of TRC and sandwich elements made in combination of TRC-layers and foam cores recently are realized in pilot projects, which are predominantly located in Aachen, Germany. Textile reinforced concrete elements for architectural facade applications give new chances for architects and engineers design.
Theoretical Deduction and Experimental Visualization of Streamlines in Mixed-Flow Impeller
Authors: Qian Kun Xi , Jing Teng
Published: January 2015

Streamlines in mixed-flow impeller were deduced by solving partial differential equations of continuity, motion and energy; they could be simplified to be logarithmic spiral and parabola in vertical and horizontal sections respectively. Then a mixed-flow impeller was designed and manufactured, its vane had a logarithmic spiral and its shroud had a parabola form. Computational fluid dynamics (CFD) demonstrated that the streamlines in the impeller were coincided with the vane and shroud; particle image velocimetry (PIV) exhibited also that the streamlines in vane channel were really logarithmic spiral at the designing point of pumping flow rate and pressure head. It concludes that both theoretical and experimental methods presented in this paper are informative and convincing, and thus are worthy to be investigated further.
A Novel Design and Implementation of a Lightweight Energy-Efficient Robotic Fish
Authors: Yan Qin , Shang Wen , Zhong Jun , Zhu Qi Xin
Published: January 2015

Inspired by the astonishing ability of the fish, more and more researchers devote themselves to improving the performance of the underwater robotic propeller. In this paper, a novel design and a preliminary performance study of a lightweight robofish are presented. Firstly, the principle of the actuator by magnetomotive force is introduced. Secondly, the implementation of the biomimetic robofish is investigated. Finally, several expriments are conducted to explore the energy consumption of the magnetomoive force actuator and the affection of the kinematic parameters on the velocity. The experimental results reveal that the novel biomimetic robofish driven by magnetomotive force has a low energy consumption and shows good performance in swimming.
Design of Air-Breathing Hypersonic Vehicle Control System
Authors: Hu Zhu Bing , Deng Li Xin , Li Bing Bing
Published: January 2015

The focus of this paper is uncertainty modeling and controller designing of air-breathing hypersonic vehicle. First, the hypersonic vehicle longitudinal dynamics model is made on the base of the fitting of aerodynamic parameters. As to the uncertainty of model parameters, a linear model of the uncertain part is established and the LQR controller parameters are thereupon designed with state transition and a first-order Taylor series expansion method, based on feedback linearization of the system. The simulation results that the hypersonic flight control system stated in this paper can well realize the tracking of speed and trajectory angle input command under the situation of floating model parameters.
Dynamic Optimization of Inland Navigation Fuel Consumption Based on Speed Distribution
Authors: Sun Dan Tong , Song Hua , Wang Hong
Published: January 2015

In the paper, a new method is proposed for the hot issues of the fuel-saving of the inland navigation. Firstly, the thought of segmentation is used to construct the model of fuel consumption in the inland navigation, which takes a whole grasp of the voyage. Then, we use the nested adaptive genetic algorithm and sequential quadratic approximation (SQP) method respectively to plan out the optimal distribution of speed in order to reach the lowest fuel consumption. Also, simulation of the two methods were carried out and compared. According to result analysis, the more appropriate sequential quadratic approximation method is selected. Finally, the optimal speed distribution and the lowest fuel consumption is obtained, which is with guiding significance for the sailing crew. More importantly, the method can be applied to any navigation and any ships.
New Controller Design in QCNN and the Synchronization with Chaotic System
Authors: Chen Chang Xing , Niu De Zhi , Fu Hui , Zhao Yan Ming , Wang Xu Jing , Qu Kun
Published: January 2015

Synchronization problem between QCNN (Quantum Cellular Neural Networks) and duffing system was studied in the paper. Not only one new controller with less parameters in QCNN was designed, but it was proved by Lyapunov function that output signal would be convergent to reference signal, and meanwhile, forms of multi-dimension controllers were given. Then the synchronization structure was draw with the corresponding controllers. In the simulation results, the new controller has higher time efficiency, which shows applying the new controller to QCNN is feasible and effective and it can assure the achievement of synchronization. Furthermore, weak periodic signal can be detected in QCNN, which provides one new thought to detection of weak signal.
Design and Research of Multiple Fiber Tows Placement Control System
Authors: He Qin
Published: January 2015

In view that present traditional composites forming technologies are difficult to guarantee the processing quality of complex components such as components with small curvature radius or with concave-convex surface. this paper used the fiber placement technology, and in order to achieve the single independent and overall joint movement control of each fiber tows ,it adopted the mainstream open control mode of a PC machine combined with a programmable multi-axis motion controller . At the same time, it introduced a feedback system to realize the accurate pressure control of multiple fiber tows, so as to ensure the quality of fiber placement.
Research on Method of Serial Robot Relative Position Correction
Authors: Ding Yuan Ming , Guo Gang Xiang , Chen Jin Wei
Published: January 2015

For the problem of serial robot structure error, method of relative position correction was researched. An adaptive filtering correction method based on robot joint position feedback was proposed. The method built a robot joint adaptive filtering corrector (AFC) to correct robot joint feedback. The real spatial position of robot end-effector can be got through the forward kinematics computation with the corrected joint feedback. Thus, the robot structure error is corrected. Weights matrices of AFC were trained with relative positions between calibration points on the standard calibration module. The proposed method of relative positions correction provides a new way for serial robot structure error correction, which does not directly modify the robot kinematics design parameters, dose not need measuring equipment, and can be applied in field. The simulation results got with LabVIEW robot module show that the corrected trajectory of robot end-effector is more approaching to its true trajectory than before, which means the robot structure error is effectively corrected.Keywords: Correction; Relative position; Serial robot; Kinematics
The Study of Prognostic and Health Management System for Smart Grid Based on Wireless Sensor Networks
Authors: Yao Liang , Sun Jing
Published: January 2015

This paper studies prognostic and health management (PHM) system for smart grid based on wireless sensor networks. The system function is analyzed firstly. Then, problems like networking hardware selection and data processing method have been discussed. The application of data fusion is discussed specially. In the end, the system platform based on a data-centric hierarchical technology architecture is designed with four layers: network configuration layer, network communication layer, platform basis layer and application layer. The research work of this paper is theoretical support for the realization of PHM for smart grid and the application of WSNs in smart grid.
Kinetics of Radiation-Induced Graft Copolymerization of Vinylbenzyl Chloride onto Nylon Fibers
Authors: Ting T.M. , Nasef Mohamed Mahmoud , Hashim Kamaruddin
Published: January 2015

The graft copolymerization of vinylbenzyl chloride (VBC) onto nylon-6 fiber was investigated by the pre-irradiation method using electron beam. The effects of grafting parameters, monomer concentration, absorbed dose and reaction temperature were investigated. The empirical kinetic rate equation dGo/dt=k[M]^0.86*[D]^1.06 was used to describe grafting of VBC onto nylon-6. The overall activation energy for graft copolymerization of VBC was found to be 22.6 kJ/mol. The results revealed that the grafting kinetic was controlled by the amounts of trapped radicals and monomer molecules. Fourier transform infrared (FT-IR) was used to provide evidence for the formation of grafted copolymers.
RRSH: An Architecture for Rapid Reconstruction of Service Composition in Smart Home
Authors: Yu Cheng Yuan , Yin Yi Ying
Published: January 2015

The environment of a smart home is highly dynamic, where resources, such as devices, services and applications, can be introduced or removed at a moment’s notice. Thus the probability of failures, such as device, network, and service failures, is improved. It is challenging to improve the availability and reliability of services compositions in smart home. In this paper, we propose an architecture for rapid reconstruction of services compositions in smart home. It can rapidly achieve failure capturing and recovery. We build ASM (Abstract State Machines) ground model [1] to analyze the correctness of the process of the reconstruction of services compositions in smart home.
Implementation of the Transmission Protocol of Non-Polar RS485 Based on FPGA
Authors: Hu Peng Fei , Yuan Yu Xiang , Qu Zhi Juan , Jiang Xue Ping , Yu Kun Shan
Published: January 2015

In order to implement non-polar transmission of the data, in this paper, we took a new way to solve the problem by automated correction method, which used the RS485 standard as physical layer protocol, used multi-function meter Convention (DL/645-1997) as implementation layer protocol, and implemented the data transfer protocol in the FPGA platform data transfer protocol. This paper introduced the design way, simulation waveforms and measured results, and solved reserve connection of the traditional polarity RS485 communication.
Design and Implementation of a Loom Information Management System
Authors: Li Hui , Zheng Jian Xia , Xu Tao
Published: January 2015

In order to solve the problems revealed in loom devices deployed in textile enterprises, such as excessive varieties, differences caused by different produced times, technical inconsistence and over-complicated equipments, the paper puts forward the system structure and control strategy in the loom management system which solves the information networking problems for different structured loom equipments, achieves real-time data collection and detection on-site through which clients could get the latest updated weaving information, the system can be used as a reference for similar applications.
Design of Low Power Data Radio Transceiver Based on A7102C
Authors: Liu Jia Yu , Zhang Ya Rong , Wang Lei
Published: January 2015

Low power data radio transceiver was designed based on ATMEGA88PA microcontroller and A7102C RF chip. The design principle was described. The hardware circuit diagram and the software flow chart were given. Experimental results showed that in the 433MHz band the standby current was less than 2uA, the transmitting power was 14.9dbm, the receiving sensitivity was-110dbm and the communication distance was 1.2KM in open space.
A Privacy-Preserving Intra-Cluster Data Aggregation Method in Wireless Sensor Networks
Authors: Wan Run Ze , Zhang Xing Yan
Published: January 2015

The self-organizing nature of its architecture of wireless sensor networks (WSNs) introduce unique challenges for privacy preservation of data. This paper analyzes the cluster-based private data aggregation protocol (CPDA), and proposes a privacy protection protocol based on hierarchical cluster. We firstly reorganize nodes in cluster according to the logic structure of binary-tree in which each node transmits slice data instead of the full one. And then, we establish the hierarchical privacy tree to manage the group of keys, which purpose is privacy protection in case of data aggregation.
A Distributed Motion Algorithm for Mobile Sensor in Hybrid Wireless Sensor Networks
Authors: Bao Xi Rong , Huang Yue , Zhang Shi
Published: January 2015

Constructing a hybrid wireless sensor networks comprising a mix of static sensors and mobile sensors can achieve a balance between improving coverage and reducing the cost of the network. In order to achieve high network coverage, mobile sensor move from a small to a big size of coverage hole in the hybrid wireless sensor networks. Due to the energy of the mobile sensor is limited, how to reduce the moving distance of the mobile sensor and reduce the energy consumption in the process of moving is a very important issue. This paper proposes a distributed minimum cost matching algorithm (DMMA) to redeploy mobile sensor, which can make the level of network coverage to meet the requirement of the environment, while effectively reducing the number of sensors. In our method, static sensors detect coverage hole by Voronoi diagrams, coverage holing sensors and mobile sensors by using DMMA to excellently heal the large coverage holes. Simulation results show that our method can effectively improve the coverage rate of the WSNs, while save the energy of mobile sensors.