bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of B2O3 and CaF2 on Melting Properties of CaO-Based Slags
Authors: Wang Hong Ming , Fu De , Li Gui Rong , Zhu Xiang , Zhao Zhao , Zhao Yu Tao , Zhu Hua
Published: November 2012

B2O3 is employed as fluxing agent of CaO-SiO2-Fe2O3 steelmaking slags to substitute for CaF2. The influences of B2O3 and CaF2 on the melting properties of this system slags were investigated and compared. The results indicate that the fluxing effect of B2O3 is more remarkable than that of CaF2. Therefore, B2O3 promotes the dissolution of CaO, SiO2 and 2CaO•SiO2, etc, then the slagging speed can be improved greatly. The melting temperatures of slags increase with the increasing of basicity, especially, when CaF2 is used as fluxing agent as well as the basicity is up to 5.0, the melting temperature is increased higher than 1420°C. These characteristics of boron-containing slgas are more suitable for steelmaking process than those of fluoride-containing slags.
Preparation and Properties of Polybenzoxazine/Lignin Alloy
Authors: Haque H.M. Emranul , Islam Zahidul , Kawauchi Takehiro , Takeichi Tsutomu
Published: November 2012

Polymer alloys of polybenzoxazine and lignin were prepared by mixing benzoxazine and lignin, followed by curing. The ring-opening polymerization of benzoxazine in the presence of lignin was investigated by differential scanning calorimetry. It was found that lignin accelerates the ring-opening polymerization of benzoxazine. Polybenzoxazine/lignin alloy films were prepared by varying the weight ratio of benzoxazine and lignin. Transparent alloy film was obtained up to 2 wt. % content of lignin, but phase separation was observed at higher content of lignin. Thermal stability of the alloy films was examined by thermogravimetric analysis from 40 °C to 850 °C. The alloy film with 10 wt. % lignin showed highest onset of degradation temperature. Moreover, char yield of alloy films was increased with increasing the lignin content, suggesting higher flame retardancy of the alloy films than the pristine polybenzoxazine.
Application of SLP Method in Rubber Powder Workshop
Authors: Fu Jing Shun , Gao Zhong Min
Published: November 2012

In this article, system layout planning (SLP) method analyzes the relationship between the refined rubber workshop logistics and the mutual relationship between logistic, draw up the position related figure of operating unit and relevant figure of operating unit area. According to the actual situation of the rubber factory, it determines three sets of optimizing distribution schemes, and uses the weighted factor method to evaluate the schemes, so as to determine the optimal arrangement scheme, each operating unit facilities layout planning unit has its guiding significance.
Study on the Structure and the Properties of Akund Fiber
Authors: Yang Xue , Huang Li Qian , Cheng Long Di
Published: November 2012

Structure and property of akund fiber were studied. Length, linear density, infrared spectrum, X-ray diffractogram, thermal property and tensile property of akund fiber were tested and contrasted to cotton and kapok. The results indicated that akund fiber length is about 31mm and linear density is about 1 dtex; its projection diameter is close to kapok. Akund fiber contains a relative large content of lignin. All of the three kinds of fibers are cellulose I crystal, the crystallinity of akund fiber is the smallest and is only 28.92%. Breaking strength and breaking elongation rate of akund fiber is smaller than that of cotton and larger than that of kapok.
Application of Advanced Carbon Fiber Composite Material in Sport Equipments
Authors: Liang Jian Xun , Cai Yun Tao
Published: November 2012

Advanced composite material not only is widely applied in aerospace, automobile and other industry fields, but also is one of the best materials for developing sport equipments. This paper introduces the advantages of carbon fiber composite material application in sport equipments and clarifies that application of this kind of high-tech material in sport equipments can greatly improve sport achievement by use of typical examples. Carbon fiber composite material has become one of essential novel materials for developing modern sport equipments.
The Fluidity and AC Impedance of Polypropylene Composites Filled with Activated Carbon Black
Authors: Ding Nai Xiu , Wang Li Li , Zhan Mao Sheng , Li Lei , Xu Shuai Feng
Published: November 2012

In this paper, carbon black was activated by grafting and coupling respectively. Then the grafted carbon black, coupled carbon black, together with the unmodified carbon black were filled into polypropylene to prepare three kinds of composites respectively. The measurements of Fourier Transform Infrared Spectroscopy (FTIR), melt flow index, and alternating current (AC) impedance were performed on the composites. From the FTIR spectra, it was shown that different groups are bonded to the surface of carbon black after activating treatment For the corresponding conductive composites，it was found that the variation of fluidity with carbon black content and temperature changed after the carbon black activation. The influence of carbon black activation on the AC impedance and fluidity of the composites was analyzed. The scheme describing the interaction between carbon black and polypropylene in composites was given according to the results mentioned above.
Effect of Nano-CuO on Luminous Intensity of Pyrotechnics Composite Containing KClO4 and Al
Authors: Ba Shu Hong , Zhang Zhe , Yan Ming Hui , Sun Zhe Xing , Teng Xin Peng
Published: November 2012

Nano-CuO had been successfully synthesized by using direct precipitation method. The prepared sample was characterized by XRD. The luminous intensities of pyrotechnics composite containing KClO4, Mg and nano-CuO were measured. The catalysis of CuO nanocrystal on KClO4 was investigated by thermal analysis instrument. The results show that the average size of nano-CuO is 19 nm and has spherical-shape. When nano-CuO is added into the pyrotechnics composites containing KClO4 and Al, it can improve the igniting and burning performance. The luminous intensity of trinary pyrotechnics composite is also greatly increased. On the other hand, nano-CuO can make thermal decomposition temperature of KClO4 to decrease 97.7 °C, the decalescence amount also reduced to 79.07 J/g. It is obviously that nano-CuO has strong catalysis to KClO4 thermal decomposition. The conclusion is consistent with the measure results of luminous intensity.
MPPT Control of Photovoltaic Cells Based on Dynamic Recurrent Fuzzy Neural Network
Authors: Sun Yu Xin , Zhang Jing , Liu Xian Xing
Published: November 2012

The output characteristics of photovoltaic cells varies with the load and the external environment.In order to improve the conversion efficiency of PV cells , it is necessary to keep the system working in maximum power point(MPP) nearby.According to maximum power point tracking for PV systems,a new intelligent control method based on dynamic recurrent fuzzy neural network is proposed.The simulation results show that when the external environment changes ,the system can make rapid response and accurately track the maximum power point of PV cells.What's more,it has good control accuracy and stability.
Comparative Analysis of Excess Sludge and Digested Sludge Pyrolysis Characteristics
Authors: Zhang Wei Jun , Cai Liang Jun
Published: November 2012

Thermal analysis tests of residual sludge and digested sludge were performed on a thermogravimetric-differential thermal (TG-DTA) integrated thermal analysis instrument at the same heating rate. By doing this, the purpose is to understand the sludge pyrolytic law, to determine the optimal drying temperature for retaining the most calorific value of sludge, and to provide the basis to the sludge thermal drying treatment. The results show that the loss of organic matter in the digested sludge and excess sludge is smaller at the drying temperature of not higher than 250°C, and the optimal drying temperature of excess sludge may be slightly higher.
A Novel Method for POP Stacking Warpage
Authors: Shi Ling Feng , Meng Chen , Xiao Yuan Ming , Cheng Li Ye , Cai Cheng Shan , Lai Xin Quan
Published: November 2012

With the miniaturization of portable products, integrate circuit becomes thinner, the effect of warpage on Package-on-Package (POP) stacking assemble on integrate circuit have become more distinct. It will lead to the deformation of the chip substrate and the more serious effectiveness of the solder joint. Consequently, in this paper, a novel method by adding fixed metal pillars in the middle of POP stacking substrates can well suppress warpage problems caused by the uneven heating reflow materials. Finally, this new method is feasible by analyzing the stress of warp model.
Properties of the Recycled Aggregate Concrete
Authors: Ren Wei
Published: November 2012

This paper studies the construction waste recycled coarse aggregate concrete blocks including waste and brick, through the control of brick in the admixture of recycled coarse aggregate concrete, compound to regenerate waste away in the analysis and research of the brick dosage of recycled concrete performance impact.
Preparation and Characterization of Diatomite-Based Porous Ceramics
Authors: Shen Wen Ning , Feng La Jun , Lei Ali , Guo Mei Juan
Published: November 2012

Diatomite-based porous ceramics were prepared by hand compression molding under low temperature sintering, using diatomite as raw material, sodium carbonate and polyvinyl alcohol (PVA) as additives. The effects of sintering temperature, addition amount of sodium carbonate and PVA on the properties of porous ceramics were discussed. The prepared porous ceramics were characterized by mercury porosimeter, XRD, SEM and FTIR. And the adsorption of methyl orange by porous ceramics was investigated. The results show that the performances of porous ceramics, such as porosity and crushing strength, change with the addition amount of sodium carbonate and PVA, also the sintering temperature. The optimum formula for preparing porous ceramics used as carrier and filter simultaneously consists of 100 portions of calcined diatomite, 10 portions of sodium carbonate, 150 portions of water, PVA and polyacrylamide (PAM) solution[m(H2O):m(PVA):m(PAM)=1000:4:4]. When sintered at 900°C, the porosity, crushing strength, average pore diameter and specific surface area of prepared porous ceramics are 71.74%, 4.535MPa, 10.023μm and 230m2/g, respectively. The prepared porous ceramics are composed of tetragonal cristobalite. And the decoloration conversion for methyl orange of prepared porous ceramics can reach 40.43% in 90 min.
Design, Synthesis and Biological Evaluation of Novel Fentanyl Analogues as Agonist of μ-Opioid Receptor
Authors: Liu Ming , Hu Wen Xiang
Published: November 2012

The research of our group focus on the studies of fentanyl analogues, which have potent analgesics free of side effects. Firstly, homology modeling, molecular docking, pharmacophore mapping, comparative molecular force field analysis(CoMFA), quantitative structure activity relationship(QSAR) studies and molecular dynamics(MD) simulations are applied in our research to gain a better understanding of the molecular interactions between the new fentanyl analogues(FA) and μ-opioid receptor(MOR), which provides a more rational design of targeting drugs. Secondly, chemical synthesis of novel compounds have been carried out successfully and their sturctures were confirmed by Nuclear Magnetic Resonance(NMR) and Mass Spectrom(MS). Lastly, in view of the functional roles of higher selectivity and affinity, the evaluation of the biological activities is ongoing.
Doping of Diamond Crystals with a Dopant of P3N5
Authors: Zheng You Jin
Published: November 2012

In this paper, a new dopant of P3N5 (phosphorus nitride) was doped into the diamond growth cell to grow diamond crystals by temperature gradient growth method (TGM) under high pressure and high temperature (HPHT). The experiments were performed at a fixed pressure of about 6.0 GPa and temperatures of 1600-1650 K. The gained diamond crystals were characterized by infrared (IR) absorption spectroscopy, micro-Raman spectroscopy and X-ray photoelectron spectroscopy (XPS), respectively. IR measurements demonstrated that, nitrogen atom was indeed doped into diamond crystals, and the diamond crystals with perfect shape containing nitrogen concentration ranging from 461 atomic parts per million (ppm) to 2186 atomic ppm were successfully synthesized. Nitrogen atoms present in diamond crystal were predominantly in isolated form accompanied by a small amount of nitrogen pairs. Micro-Raman spectra implied that crystalline quality deteriorated with nitrogen concentration gradually increased in diamond-growing environment. The XPS spectra revealed that only a few of phosphorus impurities about tens of ppm level were incorporated into a diamond crystal which was heavily doped with P3N5. This study will promote the application of doping diamonds in micro-electronics field and other fields.
Sensorless Grey Prediction Fuzzy Direct Torque Control for High-Speed Permanent Magnet Synchronous Motor
Authors: Cui Hong , Gao You Qing
Published: November 2012

High-speed permanent magnet synchronous motor (PMSM) is more and more widely applied in high precision processing and high-performance machines. It is very important to research practical control strategy for the stability operation of the high-speed PMSM. The strategy of sensorless grey prediction fuzzy direct torque control (DTC) is proposed which is suitable for high-speed PMSM control system. The method of prediction fuzzy control based on DTC is used to gain the flux, torque and flux oriented angle through the prediction model of the motor parameters. The best control scheme is gained by fuzzy reasoning to overcome the lag on the system making the adjustment process stable and realizing accurate predictive control. Thereby, the dynamic response of the system, anti-disturbance capability and control accuracy can be improved.
Fin/Rudder Joint Roll Reduction Control System Design
Authors: Ma Liang , Xu Jin Xue , Wang Guo Feng
Published: November 2012

Ship roll motion control is necessary due to the fact that ship roll motion degrades ship safety performance. In order to reduce roll motion and correct heading during sailing, fin/rudder joint control system is designed which is based on the rudder roll reduction and fin stabilizer. The fin/rudder joint roll reduction controller is designed by H∞ mixed sensitivity function. The PID autopilot is designed to correct heading and the Kalman filter is used to restrain disturbance during sailing. The simulation results show that both roll reduction and course-keeping control achieve good control effect.
A Sliding Mode PID Control with Backstepping for Underactuated AUV in Diving Plane
Authors: Yang Li Xin , Guo Li Dong , Zhou Xue Mei , Jia He Ming
Published: November 2012

For diving control of autonomous underwater vehicle (AUV), a sliding-mode PID control with backstepping is proposed. First, an equivalent model of AUV is developed. Then, the sliding mode control with an PID sliding surface is proposed for the trajectory tracking control of AUV. Moreover, the analysis of stability can be completed by Lyapunov stability theory. Finally, To validate the proposed control scheme, the simulation results are illustrated in this paper. Simulation results show that, the tracking precision and the robustness of the system are improved under the proposed control method.
Application of Improved Canny Edge Detection Algorithm in Coal-Rock Interface Recognition
Authors: Dong Li Hong , Zhao Peng Bing
Published: November 2012

The coal-rock interface recognition is one of the critical automated technologies in the fully mechanized mining face. The poor working conditions underground result in the seriously polluted edge information of the coal-rock interface, which affects the positioning precision of the shearer drum. The Gaussian filter parameters and the high-low thresholds are difficult to select in the traditional Canny algorithm, which causes the information loss of gradual edge and the phenomenon of false edge. Consequently, this paper presents an improved Canny edge detection algorithm, which adopts the adaptive median filtering algorithm to calculate the thresholds of Canny algorithm according to the grayscale mean and variance mean. This algorithm can protect the image edge details better and can restrain the blurred image edge. Experimental results show that this algorithm has improved the edge extraction effect under the case of noise interference and improved the detection precision and accuracy of the coal-rock image effectively.
Study of Location Optimization Scheduling with Multiple Storage Tasks at Container Storage Area of Airport Freight Station
Authors: Song Yu Bo
Published: November 2012

In this paper, we made a deep analysis on the operational conditions and the process of double plate of ETV at the packaging zone of airport freight station, and considered double plate factor in the freight lot allocation problem of multi Unit Load Device (ULD) storage tasks. The freight lot allocation problem of multi ULD at the packaging zone was translated into a multi-objective optimization problem with constraints and a mathematical model was set up. Niche technique was introduced into genetic algorithm, and storage location was constructed to optimize genetic algorithm. The model was solved by genetic algorithm combined with. The experimental data obtained by the simulation of MATLAB showed that, the given genetic algorithm can solve the optimal Pareto solution aggregate of the ULD region’s freight lot allocation problem.
A Study on the Machine Vision Assisted Vibratory Feeding System
Authors: Han Liang , Wang Li Yu , Hu Guo Ping
Published: November 2012

Vibratory feeding is the most significant approach for parts orientation and feeding in production; the process of production automation has been seriously hindered due to the problems with low feeding efficiency, high jamming rate. This project combines machine vision and vibratory feeding technology in substitute for the currently used mechanical orientation mechanism, in order to automatically recognize work pieces of different size, shape and color. The special vibratory feeder and frame are designed. According to the system work requirement, in the thesis, the adjustable light source and illumination system are designed, and the CCD camera and optical lens are chosen. The pneumatic actuator is also designed with the microcomputer as the controller. The area, perimeter, dispersion and invariant moment parameters are used in parts type identification. The image centroid is used to confirm parts position. By using the Hough transform, the image edge can be extracted to get the deflection angle. By using Matlab, the image can be captured, processed, analyzed and judged, meanwhile, communicate with actuator and control it.
License Plate Image Skew Correction Algorithm Based on Geometric Constraint
Authors: Ju Zhi Yong , Wang Ping Dian
Published: November 2012

This paper proposes a new license plate image skew correction algorithm, which is based on the lowest pixels of a set of characters of the license plate. The skew angle is evaluated by applying moment calculation, and the method to get characters in license plate image is described in detail. It shows that the proposed algorithm is not only effective but also accurate.
Acoustic Source Localization Method with Variable Power in WSN Based on LSSVR Regression Learning
Authors: Zhang Xiao Ping , Wang Yang
Published: November 2012

To realize accurate acoustic source localization with variable power in noisy environments, a novel acoustic source localization method with variable power based on LSSVR regression learning (ALVP-LRL) was proposed. The ratio values of any two adjacent nodes’ theoretical measurements of acoustic energy comprise feature vector, which has stable mapping relationship to source’s coordinates. LSSVR was applied to build regression models approximately reflecting that mapping relationship. By inputting feature vector constructed by real measurements into the regression models, the models’ outputs were then regarded as the estimated coordinates. Experiments were performed in 121 test locations. As SNR level reduced, amount of test locations where location errors were less than 2 meters by ALVP-LRL method changed from 77 to 54, while that amount by MLE method rapidly decreased from 121 to 11. It shows ALVP-LRL method preliminarily achieves certain effects and has more significant advantages on lower SNR occasions.
Fire Alarm System in Residential District Based MCU
Authors: He Juan , Xiong Fei Qiao
Published: November 2012

An intelligent fire alarm system has been designed based on MCU. The system is mainly composed of fire detector, fire controller and radio communication. This system can accurately display the environmental temperature. When the fire occurs, the system can alarm and remind of the staff on site working. At the same time, it can also display fire graphics, time, and temperature on the LCD and control the system very good.
Research for Automatic Forecasting System of Weighting Rainfall Recorder
Authors: Li Zhi Fei , Xu Zhi Ling
Published: November 2012

In order to solve the problem of siphon rainfall recorder’s hard to control automaticly and the measurement error when siphoning, we research the Automatic forecasting system based on double barrel double siphon rainfall recorder and ARM processing terminal. By using double barrel double siphon structure and weighing cell, we eliminate the rainfall error caused by siphon loss, and achieve the automatic collection of rainfall data.
UAV Sensor Fault Diagnosis Technology: A Survey
Authors: Gao Yun Hong , Zhao Ding , Li Yi Bo
Published: November 2012

In this paper，a survey of UAV (unmanned aerial vehicle ) sensor fault diagnosis technology is presented .UAV sensor fault modes and feature are analyzed. The current research progress and significant approaches in the field are introduced at home and abroad. Finally, the difficulties to be solved and future development trends in the research field are summarized.
A Laboratory Measurement Method of Antenna Gain
Authors: Xie Hui , Zhao Lin , Liang Yu Jun
Published: November 2012

Antenna gain is one of the most important electrical characteristics that are of interest to obtain by direct measurement in laboratory experiment. This paper introduced a laboratory measurement method of antenna gain, and demonstrated this experiment in detailed steps such as measurement environment surrounding the antenna, measurement preparation, measurement points for attention, etc. A quarter wave omnidirectional antenna, a collinear omnidirectional antenna, a biquad antenna and a cantenna were shown as models, and the measurement result is fully consistent with theoretical value.
Design of the Data Acquisition System for Mine's Dynamic Rail Track Scale
Authors: Zheng Chuan Xing , Chen Jian
Published: November 2012

The data acquisition system for mine's dynamic rail track scale is designed based on embedded technology. The automatic motion direction judge of the tramcar could be achieved by the staggered installation of the weight sensors without installing additional direction sensors. Each pair of tracks are installed with a data collector and all data collectors carry out a two-way data exchange with the same measurement controller. A video monitor is installed near the coal mines to get video monitoring. Only one video server is required for all video monitors. The measurement controller is used to receive and deal with both the weight data from the data collector and the video data from video server. The data is computed in measurement controller and transmitted to the remote monitoring center server, in which the final results are presented.
Dielectric Barrier Discharge Detection System Based on PMT
Authors: Zhang Ding Qu , Chen Rui Min , Xiao Yong , Sun Wei Ming , Hu Jia , Pan Feng
Published: November 2012

This paper puts forward a dielectric barrier discharge detection system using PMT for photoelectric element. According to faint light signal characteristics and testing purpose of dielectric barrier discharge, this system is designed, including three parts: optical fiber transmission, photoelectric conversion and signal processing circuit. This paper introduces design and ideas of the system framework and presents circuit design parameter. Results in atmospheric pressure of dielectric barrier discharge detection experiment show that the system has high sensitivity, fast response, can effectively distinguish discharge and interference signals, gather more signals in different areas.
Measurement of Dielectric Loss Angle Based on Wavelet Threshold Denoising and Least Squares
Authors: Chen Hai Wen , Mo Fu Jiang
Published: November 2012

Dielectric loss angle is the effective means to determine the status of the high voltage equipment.Influenced by power grid frequency fluctuation and white noise, the measurement accuracy of traditional method of dielectric loss angle such as harmonic analysis method, cannot meet the demand.A new methodbased on wavelet threshold denoising and least squares is presented in this paper. Firstly, harmonic wave and white noise are eliminated by improved wavelet thresholddenoising, Second, the fundamental wave of voltage and current signal is extracted by mean of least square method, then we can get dielectric loss angle.Simulation and calculation are validated in the different values of frequency fluxion and whtie noise.Comparing with harmonic analysis method,the result show the feasibility and effectiveness of this method.
The Constraints Analysis on TRIZ in Management Innovation Application
Authors: Pang Jin Zhu , Guo Xin Bao , Yang Ya Wen
Published: November 2012

The development trend of TRIZ is to be a method that can create and solve problems universally and ultra professionally, so it can be applied to all areas including management innovation. According to the general flow of problem solving of TRIZ, this paper analyses the restrictions of TRIZ used in the management innovation systematically, and it points out that constructing the conflict theory based on management parameters and contradiction matrix is the bottleneck problem.
An Effective Method for Combining Kernels with Class Separability
Authors: Wang Ting Hua , Zhang Qiong , Xie Hai Hui , Chen Jun Ting
Published: November 2012

We propose a simple but effective method to determine the kernel weights for convex combination of multiple kernels. The key property of the proposed method is that it adopts a class separability criterion as the evaluation function to measure the goodness of the individual kernel. Based on the principle of class separability, we assign a weight to each kernel that is proportional to the quality of the kernel. Experimental results on Image Segmentation data set show the proposed method can improve accuracy in comparison with that using a single kernel or uniformly-combined kernel.
Feature Extraction of Nonstationarity Vibration Signal Based on Wavelet Decomposition
Authors: Chen Yong Hui , Zhang Xue Liang , Li Hai Hong
Published: November 2012

Abstract. Nonstationarity feature representation and extraction method based on the wavelet decomposition and demodulation techniques are studied. Some component in special frequency band included faulty information is selected to reconstruct by wavelet analysis. The mono-components with fault feature in different frequency band would be captured and separated out. The demodulated and spectrally signals are analyzed by Hilbert transform, and it presents an approach to get the characteristic frequency of fault signals. So what kind of the fault mode is can be estimated. For the nonstationarity and modulation feature of rolling bearing fault signals, wavelet decomposition combined with Hilbert transform is effective in identifying the localized defects of rolling bearings.
Research on Risk Assessment Model of Open Press Blunt Hand Accident
Authors: Chen Wen Ying
Published: November 2012

Basic principle and inference algorithm of Bayesian network (BN) were emphasized. As to the Fault Tree with basic events of common cause failure, accident probability cannot be computed correctly. An open press blunt hand accident risk assessment BN model was set up, in addition, the BN nodes of common cause failure were illustrated and the accident probability of occurrence was obtained. The discussions about computed results indicate that regarding to system with unit events of common cause failure or interdependent events, result of accident probability computed from a BN model is higher than that computed from the Fault Tree/Event Tree model.
Active Shape and Active Apparent Hybrid Model of Human Facial Feature Points Localization Algorithm
Authors: Wang Chang Yuan , Wang Jing , Qu Mei Juan
Published: November 2012

An improved active shape model (ASM) and active appearance model (AAM) based new method is proposed, this method will use two-dimensional local gray information to update the feature point position when using ASM to locate the face contour feature points. As to the internal features point location, it establishes facial organs independent AAM model. At the same time, it uses different measure functions to judge the convergence of search algorithm. The experimental results show that the new algorithm greatly improved the localization accuracy of facial feature points.
Contour Reconstruction Based on Non-Closed Contours
Authors: Wang Bei , He Jin Guo
Published: November 2012

There are a lot of developments focused on 3D surface reconstruction based on 2D contours in recent decades, mostly based on closed contours. Due to the limitation of imperfect technology on material classification and edge extraction, it’s difficult to extract closed contours automatically, and this situation limits the application of 3D surface reconstruction based on contour. This paper designs a reconstruction algorithm based on non-closed contour, which not only provides a new viewpoint for research on 3D reconstruction, but also make 3D reconstruction based on contour more applicable.
Parallel Implementation of Single-Source Shortest Path Algorithm Based on Haloop
Authors: Lou Yuan Sheng , Zhang Wen Yuan , Xu Feng , Wang Yu , Chen Sheng
Published: November 2012

As a typical problem of graph theory, Single-Source Shortest Path(SSSP) has a wide range of applications and research. The traditional MapReduce framework such as Hadoop has been applied to SSSP problem. However, in this way, it may need writing and reading the disk frequently, transmitting data largely, beacuse of SSSP’s iterative. Haloop is a parallel programming framework which makes an improvement based on Hadoop framework, and adapts itself to iterative programming. Hence, this article represents the SSSP problem with an iterative way firstly, and then we put forward the implementation mechanism of SSSP algorithm based on Haloop. Though testing and analyzing, the implementation based on Haloop obviously improves the efficiency of program execution, compared with the traditional realization mechanism.
Numerical Study on Influence of Grid Density to Aerodynamic Characteristics of Typical Transport Configurations
Authors: Wang Yun Tao , Wang Guang Xue , Meng De Hong , Li Song
Published: November 2012

Numerical simulations for the flows of typical transport configurations are performed by solving Navier-Stokes equation using TRIsonic Platform (TRIP). The purpose is to validate TRIP3.0 for the simulation of transport configurations. The configurations contain DLR-F6 and trapezoidal high lift configurations. For DLR-F6, the structured mesh and test data are obtained from DPW-III. The reference numerical results are obtained by CFL3D. For the high lift configurations, the structured mesh are generated with ICEM, and test data are obtained from HiLiftPW-1. For these configurations, the effects of grid density to aerodynamic characteristics are systematically studied. The numerical results are verified by comparison with experimental data and numerical results of CFL3D. Grid refinement leads to converged numerical results. It is demonstrated that grid density has little influence on friction drag, whereas significant influence on pressure drag for the DLR-F6 configurations. It has little influence on lift and momentum for the trapezoidal high lift configurations before stall, but has obvious influence near stall.
Projects Improving QoS of the Voice Real-Time Data Based on IP Network
Authors: Liang Jin Hua , Zen Xuan
Published: November 2012

The reasons influencing the VoIP QoS include transmission delay, jitter and data packet drop. The main measures improving the VoIP QoS are the integrated services and the differentiated services. But the integrated service is only suitable for the small-scale network, and the differentiated services can’t guarantee QoS from the source end to the destination end for every IP data stream alone. The paper sets forth a kind of mixed model combining integrated Services with differentiated Services to support the VoIP QoS on the bases analysis of their defects.
A String Approach for Dynamic XML Document
Authors: Qin Zun Yue , Tang Yong , Xu Hong Zhi
Published: November 2012

Labeling the nodes of an XML document allows queries without accessing the original file. For dynamic XML documents, the labeling scheme should support both efficient queries and insertion updates. This paper proposed a new labeling scheme, DCPL (Dynamic Common Prefix Labeling), to process dynamic XML documents efficiently. Compared with the existing schemes, DCPL presents a prominent feature of maintaining its simplicity and efficiency in dynamic and static documents. Meanwhile, it can efficiently support labeling updates, especially frequent updates, without sacrifices of query performance. The conducted experiments have shown that our proposal works better than the previous ones.
Study on the Establishment of Land Information Management System
Authors: Wang Chun Bo , Wei Zhong Yi , Lu Chun , Zhang Hui Hui
Published: November 2012

Along with the “digital Land” was put forward and the extensive application of the network technology, it brings profound influence to land information production and daily management work. This paper expounds a number of key technical problems and solutions in the establishment of land information management system with workflow, including system structure, history data management, GIS and OA integration and workflow issues. Combined with the characteristics of land information management system, this paper uses the component development method to realize land information management system with the integration of GIS and OA.
An Efficient Sixth-Order Convergent Newton-Type Iterative Method for Nonlinear Equations
Authors: Hu Zhong Yong , Liang Fang , Li Lian Zhong , Chen Rui
Published: November 2012

In this paper, we present a modified sixth order convergent Newton-type method for solving nonlinear equations. It is free from second derivatives, and requires three evaluations of the functions and two evaluations of derivatives per iteration. Hence the efficiency index of the presented method is 1.43097 which is better than that of classical Newton’s method 1.41421. Several results are given to illustrate the advantage and efficiency the algorithm.
The Study of Image Processing Method Based on OpenCV and USB Industrial Camera
Authors: Huang Zhen Feng , Chen Hai Ping , Cheng Li Li
Published: November 2012

To improve the speed and accuracy of visual detection system, image processing software has been developed. However, it found two problems in the development of the system. The one is OpenCV library function can't directly obtain video data flow from the USB industrial cameras with non-V4L interface on the Linux platform. The other one is the IplImage structure images can't immediately be showed in Qt control. Based on these problems, this paper proposes a new solution, the shared-streams method, and offers the program codes to implement this method. Finally, after experiment and contrast, the results indicate that shared-streams approach has a certain feasibility and superiority.
Study on the Development and Application of osgART Based on MFC
Authors: Gao Kang , Fan Jing Song , Shao Ming , An Jun
Published: November 2012

In order to achieve a convenient Augmented Reality interactive system, a rendering engine called osgART was integrated into MFC. The system manipulates the interactive transformation of virtual objects by utilizing the message sending from controllers. The operating mechanism of osgART in MFC was explored in this paper. Besides, the controller message had been successfully sent to the update callback, and the SRT order of matrix multiplication was used in update callback class. Finally, a user-friendly interactive AR application has been successfully developed, which shows that an effectively real-time interaction in MFC environment has been achieved.
The Realization of FPGA + ARM-Based Image Matching
Authors: Jia Tao
Published: November 2012

The intelligent monitoring refers to the use of pattern recognition technology, digital signal processing, artificial intelligence theory and automatic control technology, and integrating video surveillance into the monitoring system, to enable the system become intelligent. The core technology for the system is the identification and matching of moving targets; and the fast & exact match detection of a moving target is the key step and technical basis for subsequent identification. Image-based matching has a wide range of applications in the field of industrial product testing, identification of aerial targets, the identification of ground targets. In this paper, I’d discuss over the program of utilizing 1K50 + LPC2106 processor to achieve the target detection, together with the specific algorithm. Experimental results show that the processing system is absolutely capable of real-time detection and matching of the target image.
Coal Mine Electromechanical Equipment Online Management Platform Development Based on Web
Authors: Zeng Qing Liang , Zhang Bin , Liu Zhi Hai , Kang Hong Xi , Wu Zai Chao
Published: November 2012

In this paper, an implementation framework of electromechanical equipment online management was put forward by studying on key technology of coal mine electromechanical equipment online management based on web. Based on ASP.NET technology, C# as development language, Oracle10g database for data processing, it realized cross-regional and inter-provinces multi-sector information online management, information sharing and report form processing, improved electromechanical equipment management efficiency of mine enterprises and reduced management costs.
Research on Pricing Decision of Multi-Level Remanufacturing Reverse Supply Chain Based on Stackelberg Game
Authors: Zhou Zhan Feng
Published: November 2012

In order to resolve all kinds of pricing problems in reverse supply chain, this paper constructed a multi-level remanufacturing reverse supply chain consisted of single recycler, single manufacturer and single retailer and established a non-cooperative stackelberg game by applying game theory. By solving this model, the equilibrium solution of stackelberg game was got. In non-cooperative game the maximize profits of every company in reverse supply chain and the total profits of the entire supply chain was acquired by using the equilibrium solution. The results show that this model can provide a theoretical basis for the pricing decision of remanufacturing reverse supply chain.
Research on the Pricing Strategy of Production Wastes for Supply Limitation Considerations
Authors: Li Hai Yan , He Lin Shu , Deng Guo Qing , Wu Qing
Published: November 2012

The pricing of production wastes is one of the key problems to realize the coordination operation of interrelated supply chains. Considering the background that the first cooperation between wastes supplier and manufacturer and the capacity of production wastes is supposed to be limited since the output of production wastes is dependent on the market demand of main production. Based on Nash bargaining game, the pricing strategy of production wastes under the condition of limited capacity is proposed to realize the optimal interrelated supply chain system. The effects of output capacity on price and total utility of the system are discussed. Furthermore, the pricing strategy of incentive compatibility when output capacity is less than the order quantity of the contract is proposed.
Research on Manufacturing Resource Domain Ontology Modeling Method
Authors: Liu Zhong , Yan Xian Guo , Guo Hong , Su Shi , Xu Chang Gui , Li Jian Wei
Published: November 2012

Retrieval, recall rate and precision are not acceptable according to the general search engine in searching networked manufacturing resource. Manufacturing Resource Domain Ontology was derived and established based on the concept of the ontology in this paper. Model description was completed with protégé.
Analysis of Influencing Factors to Green Supply Chain Based on ISM
Authors: Liu Mei , Fan He Hua , Zhou Yong Wei
Published: November 2012

Based on the research status of green supply chain, we found the hierarchy of various factors which affect the effectiveness of green supply chain by the Interpretive Structure Modeling (ISM), and present the suggestions for improving implement effect, so that offer some enlightenment for the development of green supply chain scientifically and systematically.
Analysis of Influence Factors of the Supply Chain Distribution Center Location Based on the ISM Method
Authors: Zhang Jun Long , Wang Xi Fu
Published: November 2012

Distribution center plays an important role in the whole supply chain, and distribution center location decision is the core content of logistics systems analysis. Based on the analysis of the object of supply chain distribution center location, the main influence factors of the supply chain distribution center location were divided by using the ISM model, and a multi-grade hierarchical structure diagram of distribution center location was designed. By combining qualitative and quantitative methods, the hierarchical relationship of the main influence factors of supply chain distribution centers location is clarified.
Research on Non-Linear Parameters Identification for Servo System of CNC Machine Tools
Authors: Chen Guang Sheng , Li Hao Lin
Published: November 2012

As phenomena of friction in computer numerical control(CNC) machine tools is inevitable, accurately modeling of friction is need for precise position control and performance evaluation of CNC machine tools. This paper proposed an identification method that non-linear friction model described as Stribeck are linearized by using high order Taylor series expansion and parameters of the model are obtained by least square method (LSM). Signals of servo motor current and rotating rate which are offered in many modern CNC machine tools are needed for the identification and experiments results show that parameters of Stribeck model can be obtained accurately by identification. The method is suited for industrial condition and has its practicality.
Research on the Cutting Force Induced Error Measurement Method of the CNC Machine Tools
Authors: Liu Huan Lao , Chen Bao Yue , Liu Feng , Tan Guang Yu
Published: November 2012

The cutting force induced error has been more important as the hard cutting and hard cutting material used. This paper proposed the direct measurement method of cutting force induced error, which realized the corresponding directly of the cutting force and the value of error in the working process. According to the discrimination of machine error characteristics reflected by the different measuring methods, it puts forward to building the mixed error model based on the measuring technology of one dimension and two dimension. The results could provides the test data and theoretical basis for the mechanism of the processing performance affected by the dynamic behavior of machine tools.
Double-Fed Speed Control System for Wound-Rotor Induction Motor Based on SVPWM Control Technology
Authors: Zhao Mei Hua , Ruan Yi , Wu Xiao Xin
Published: November 2012

A high performance speed-regulating control system with high power factor and small harmonic pollution was realized. Firstly, the mathematical model of the grid side PWM converter was derived, and then voltage, current double close-loop control strategy based on a grid voltage orientation was proposed. Secondly, the mathematical model of wound-rotor induction motor(WRIM) was derived, and then the rotor side PWM converter control strategy based on a stator voltage orientation was designed. Finally, experimental platform for doubly-fed speed-regulating control system was built. Experimental results showed that the control strategy is feasible and efficient.
Performance of the Elevator Inverter with the Super Capacitor Energy Storage
Authors: Zhou Xiao Jie , Ruan Yi
Published: November 2012

The paper presents a super capacitor energy storage device to recycle the power with regenerative braking which the elevator inverter generates. During the running of the elevator, the fluctuation of DC bus voltage is greater, this will impact on grid greatly, especially on energy feedback. It will disturb user electricity distribution system and endanger the operation of power system. Through switching control of the Bi-directional DC/DC converter, the converter can control charge and discharge of the super capacitor. When the elevator inverter generates a power with regenerative braking, the power energy is charged to the super capacitor. it discharges the energy power when the elevator is accelerated or load is added to the elevator. Experimental results carried out on a 10-kW elevator inverter are presented.
Model Parameter Identification and Simulation of Ship Power System Based on Recursive Least Squares Method
Authors: Hu Jin Hui , Hu Da Bin , Xiao Jian Bo
Published: November 2012

According to the lack of the part of the equipment design parameters of a certain type of ship power systems, the algorithm of recursive least squares for model parameter identification is studied. The mathematical model of the propulsion motor is established. The model parameters are calculated and simulated based on parameter identification method of recursive least squares. The simulation results show that a more precise mathematical model can be simple and easily obtained by using of the method.
The Initial Alignment Method for Low-Cost Strapdown Inertial Navigation System Based on Kalman Filter
Authors: Li Jie , Li Yong , Jiang Qiao , Liu Jun
Published: November 2012

In view of the problem that the sensor accuracy of low-cost SINS is very low and the system is difficult to achieve autonomous initial alignment, a initial alignment method for low-cost SINS based on Kalman filter was presented. Firstly, accomplish the system coarse alignment by the aid of electronic compass; on this basis, adopt modern Kalman filter technology to establish accurate error models, and estimate the platform error angle by the statistical property of the system noise and measurement noise. The simulation results shows that the initial alignment method could provide precise initial condition for the low-cost SINS with short solving time, high precision and rapid convergence, and has strong value for practical applications.
Analysis of Rear Window Buffeting Characteristics Using a Production Sedan
Authors: He Yin Zhi , Yang Zhi Gang
Published: November 2012

In this paper rear left side window buffeting characteristics of a production sedan under different yaw angles and different window opening sizes are investigated through full-scale aeroacoustic wind tunnel tests. By yaw angle -10 degree, as driver position on the lee side, the resonance peak SPL is much less than that by yaw angle 0 or +10 degree and the corresponding frequency is also some lower than that by yaw angle 0 or +10 degree. As window opening size turns small, the resonance peak SPL decreases. By side window with 25% opening size, the peak SPL is much less than that by side window with 50% or 100% opening size. In addition, the corresponding frequency is also some lower than that by side window with 50% or 100% opening size. Different test positions at the front row or back row show very similar buffeting characteristics.