bluuebunny/crossref_metadata_2025 huggingface dataset:
Altitude Correction Method Analysis of Corona Onset Electric Field Strength
Authors: You Shao Hua , Huang Jie , Chen Li , Liu Bao Hong , Yu Le , Liu Yun Peng , Lü Fang Cheng
Published: December 2014

Corona cage six bundle conductors corona loss were measured, and corona onset electric field was obtained. The IEC 61284 standard was adopted as altitude correction. And add to this, exponential form and linear form altitude correction formulae were adduced. The results show that, exponential form altitude correction formulae calibration error and dispersion are less, and the adjustment effect is better; for convenient engineering application, linear correction formulae can be adopted; for estimation in the rough, sea level as base, as altitude increases every 1000m, conductor corona onset electric field decreases about 7%.
Binding Energy of Donor Impurity in a Rectangular Semiconductor GaAs Quantum Dot with Electric Field
Authors: Yun Kang , Wang Sheng , Li Xian Li
Published: December 2014

Within the quasi-one-dimensional effective potential model and effective mass approximation, we calculate the ground and the first few excited state binding energies of a donor impurity in a rectangular quantum dot (RQD) in the presence of electric field. We discuss detailedly dependence of the binding energies on the impurity positions. The results show that the binding energy is the largest when the impurity is located at the center of RQD with zero field and is lowest when the impurity is located at the corner of the RQD. The peak strengths and positions of the probability density in RQD appear to be the critical control on such impurity-induced dependence. We believe our results can provide an indication for design of some photoelectric devices constructed based on GaAs RQD structures.
Effect of the Dynamic Characteristic of Long-Span Transmission Tower on High Voltage Transmission Line
Authors: Feng Xiao Dong , Fu Feng Ren , Miao Tong Chen , Lai Yong Xing , Wang Xian Fa
Published: December 2014

In this paper, according to the structure character of transmission tower, the transmission lines are simulated as link10 space spar elements which have the unique feature of a bilinear stiffness matrix resulting in a uniaxial tension-only (or compression-only) elements and the transmission tower are simulated as space element beam188 and link 8. So the ANSYS fine finite element models of transmission tower-line system which are more agrees with engineering practices are set up, dynamic characteristics are calculated on nine conditions and the influences of transmission line on dynamic characteristics of the transmission tower are discussed, some valuable conclusions are given.
Embedded Acquisition System for the Lung Sound Signal Based on STM32 Microcontroller
Authors: Zhang Li Ya , Xu Zhui Hui
Published: December 2014

The accurate detection of lung sounds is the premise and infrastructure to achieve non-invasive diagnosis of cardiovascular disease, and the disease noninvasive diagnostic methods based on cardiovascular lung sounds have non-invasive, fast, convenient, and economic characteristics. According to this, the embedded acquisition system for lung sound signals is designed based on the STM32 microcontroller, Stethoscope and electrets microphone is adopted as the lung sound signal acquisition module. The experiment is done based on this system, and the result shows that this designed system working properly, and reliable design.
Application and Development Prospects Analysis of Solar Car
Authors: Yan Xue Bo
Published: December 2014

With the development of photovoltaic technology with the electronic technology, solar car as a new energy vehicles has emerged. By comparison with conventional fuel vehicles, analyzes the advantages and shortcomings of the solar car, solar car elaborated while the current state of development, in considering the factors limiting the development of solar car, based on the prospects for the development of solar cars analyzed, providing a reference for the future direction of the solar car.
Study on the Practical Applications of SVG Technique in New Era
Authors: Gao Yuan , Suo Wei Wu , Long Xuan Chen , Yao Zhi Ming , Zhong Yi
Published: December 2014

This paper focused on several practical applications of SVG technique in new era. First, the present study made a basic introduction on reactive compensation from three aspects. Second, it briefly analyzed the features of the load of SVG which remained to be solved in different fields from five aspects. Third, this study made an integrated analysis of the devices and technology parameters of SVG from two aspects. It was expected to be able to provide some useful inspirations and help to the experts and scholars.
An Optimal Application Partition Algorithm for Energy Efficient Computation Offloading
Authors: Fan Wen Hao , Deng Qian , Tang Bi Hua , Wu Fan , Zhang Hong Guang
Published: December 2014

In order to alleviate the energy constraint in smartphones, computation offloading is regarded as an effective solution. In computation offloading, how to partition a given application is one of the key issues. On obtaining the best partition, due to the time complexity of partition algorithm, most researchers give up looking for a global optimal solution but to find local optimal. In this paper, a global optimal application partition algorithm is presented, the main strategy is scaling down the problem through merging the correlated nodes firstly, then using 0-1ILP to obtain the partition in order to make the mobile energy consumption achieve global optimal minimum, thus it has less time complexity than 0-1 ILP. Experimental results show that the proposed algorithm made the same global optimal partition results as 0-1 ILP, while it consumed less time and energy than 0-1 ILP.
Analysis of the Communication System SDH Transmission Network Fault and its Maintenance Technology
Authors: Yan Hai Yu
Published: December 2014

SDH transmission mode is a new concept of digital transmission. SDH transmission network can not only improve the efficiency of network management, and can greatly improve the utilization of network resources, reduce the management cost and maintenance cost, to ensure that the network operation and maintenance is flexible operation, reliable and efficient. Social and economic development promotes the development of railway transportation in our country, and the combined railway transportation with communication technology, making up a highly digital railway communication network. In the railway communication network, most of which the transmission technology of SDH transmission network has been adopted. SDH transmission network plays an important role in railway communication network.
Studies on Intelligent Planning Technology of Forward Heuristic Robot Based on the Correlation of the Target
Authors: Wu Zhi Huan , Yan Hui , Gao Yong Ming , Yin Hang
Published: December 2014

Aiming at planning and scheduling problems of intelligent robots, the heuristic algorithm is proposed based on the correlation of the target. Robot intelligent planning is a solving process to quickly find the optimal solution or near-optimal solutions in the space of a feasible solution. Due to the complexity and discretion of the problem solving, the past known may not be able to play enough guiding role in the future of solving process, which is likely to cause the search process without converge for a long time. Here using information to search for the solution space for a purpose to guide the search process, searching for 3-layers of information including nodes, variables and variable domain in the solution process are inspired. The guide search process is accelerated to convergence and the optimal solutions solved as soon as possible. Because forward heuristics makes the search process more purposeful, and the quality of solution can be effectively improved.
Alleviating Reactive Bit Jamming in Wireless Sensor Networks
Authors: Wang Jian , Hu Xiao Ming , Yang Yin Chun , Wu Xiu Mei
Published: December 2014

Wireless sensor networks are widely deployed and thus are suffering increasing threats such as reactive bit jamming attacks. Such jamming can be alleviated by coded transmissions. This paper derives an optimal redundancy level required for Reed-Solomon code based transmissions and unveils the monotonic characteristic of coded transmission efficiency with respect to frame size, jamming strength, as well as communication protocol stack overhead.
Gesture Recognition of Pigs Based on Wavelet Moment and Probabilistic Neural Network
Authors: Zhou Jin Jin , Zhu Wei Xing
Published: December 2014

For real-time monitoring the behavior of pigs in piggery, the method that combined the advantages of wavelet multi-scale analysis with invariant moments is proposed. Firstly, the original image is pre-processed by using ant colony algorithm to extract object contour. Then the target contour edge growth method and binary morphology are used, and the outlines of pigs are extracted by canny operator. Wavelet moment was used to get the global features of an image and increase the structural details of the image feature description. Finally, the neural network is applied to identify four behaviors including normal walking, walking down, looked up walking and lying of pigs. Experimental results show that the accuracy of the classification and identification of swine gesture reached more than 95%. This method has a better effect in the recognition of pigs and the noise resistance.
Optimization Algorithm Analysis on Satellite Communication Signal Processing
Authors: Liu Ren Hao
Published: December 2014

Aiming at the difference between satellite’s signal frequency spectrum and satellite signals under specific channel condition, larger fluctuation and ineffective threshold searching method by adopting traditional energy, the paper improved singular point’s performance detection of traditional wavelet transform, selected suitable searching threshold by ultimately combining with both advantages and promoted searching performance of satellite signals under specific channel condition. Based on preprocessed order-1 subspace tracing algorithm of space sign function and infinite norm normalization, the paper solved the problem of degenerating performance of regular order-1 subspace tracing algorithm under noise environment of a stationary distribution effectively.
Multi-View Radar Target Recognition Based on Bayesian Compressive Sensing
Authors: Liu Sheng Qi , Zhan Rong Hui , Zhai Qing Lin , Wang Wei , Zhang Jun
Published: December 2014

A novel Bayesian compressive sensing (BCS) based method for multi-view radar automatic target recognition (RATR) is presented. The overcomplete dictionary is constructed by all the training sets. The sparse representation coefficient solved via BCS is used as feature vector, and recognition is implemented according to minimum construction error criterion. Performance evaluation was carried out using simulated vehicle target dataset. The results show that the proposed method can obtain promising performance and is robust to the effect of noise.
Image Reconstruction Algorithm of Track and Field Action Based on 3D Virtual Animation
Authors: Tan Zhi Ping
Published: December 2014

With the increasing development of modern social information degree, the multimedia technology and network technology have rapid development, and the society puts forward new requirements for the education industry. Accordingly, this paper uses virtual design of Flash3D animation to development and design demonstration system of track and field action. The system uses the built-in method to extract the feature of track and field action, and uses the wavelet reconstruction algorithm to reconstruct the action, so as to achieve the function of action learning. We use Adobe Flash CS65 of the system to extract 5 groups of 1025 movements and reconstruct 10 groups of 2256 movements. Comparing the reconstructed image with the actual image frames, we found the new images reconstructed by the demonstration system are consisting with the real images frame. It provides a new computer method for teaching track and field action.
Massive Image Treatment System Based on Cloud Computing Platform
Authors: Wu Dan , Zhou Ming Quan , Bie Rong Fang
Published: December 2014

Massive image processing technology requires high requirements of processor and memory, and it needs to adopt high performance of processor and the large capacity memory. While the single or single core processing and traditional memory can’t satisfy the need of image processing. This paper introduces the cloud computing function into the massive image processing system. Through the cloud computing function it expands the virtual space of the system, saves computer resources and improves the efficiency of image processing. The system processor uses multi-core DSP parallel processor, and develops visualization parameter setting window and output results using VC software settings. Through simulation calculation we get the image processing speed curve and the system image adaptive curve. It provides the technical reference for the design of large-scale image processing system.
Gross Error Considered Stereo Images Relative Orientation
Authors: He Hai Qing , Chen Xiao Yong
Published: December 2014

Relative orientation is one of the most important and classic tasks in photogrammetry. Gross error of the corresponding points may be caused by computer automatic image matching, the commonly used method is unsuitable to relative orientation. In this paper, a novel approach of stereo images relative orientation considering gross error was proposed. Firstly the initial elements of relative orientation are computed by direct relative orientation, then the refined elements of relative orientation are obtained by Huber and iterative algorithm in the continuous relative orientation, which can eliminate the negative influence of gross error. Experimental results show that the proposed approach can achieve more excellent performances in accuracy than the commonly used method in the corresponding points with gross error.
Research on Age Estimation by Means of 2D-PCA
Authors: Deng Si Cheng , Chen Yi
Published: December 2014

Age estimation is an important method to solve the face recognition with age change, due to the feature extraction,in the process of age estimation study, PCA dimensional reduction method is usually used to reduce dimension with excessive dimension.PCA refers that transform the sample matrix into one-dimensional vector first, then the one-dimensional vectors form a matrix, solve the eigenvector. 2D-PCA applied in this paper is not required to transform the sample matrix into one-dimensional vector, but construct scatter matrix with data matrix directly, accordingly, the computing time is reduced and a good performance evaluation is achieved in the test.
MATLAB-Based Digital Image Processing Technology Research
Authors: Shi Chung Yang
Published: December 2014

This paper is an application of digital image processing technology based on MATLAB; this paper introduces the MATLAB image enhancement and image segmentation technology, in order to lay a foundation for the future research and application.
Research of Super-Resolution Image Reconstruction Methods
Authors: Tang Ling
Published: December 2014

The super-resolution image reconstruction has become a hot topic in the areas of image processing and computer vision because of its extensive theoretical and practical values. This paper described the concept of super-resolution reconstruction, reviewed the development process of the technique, common algorithms classification, the current research findings and other related issues. The characteristics of different algorithms are also analyzed.
Study of Signal-Noise Separation Based on the Fuzzy Neural Network
Authors: Liang Bin , Bai Yan Ping
Published: December 2014

This paper introduces the basic mathematical model of fuzzy neural network and T-S model. It uses the fuzzy neural network for targeted emulational signal-noise separation and presents evaluation indexes of the fuzzy neural network’s denoising effect, analyzes its mean square error (MSE), signal-to-noise ratio (SNR), SNR gain, and similarity of signal and theoretical reference signal after denoising. The simulation results show that this algorithm has prominent effect of separation under high and low SNR environment. At last, the experiments for the second lake of Fenhe also validated the superiority and effectiveness of this algorithm.
Computer Vision and Digital Image Processing in Intelligent Navigation System
Authors: Zhang Xin Chang , Jin Xu Dong
Published: December 2014

Current intelligent navigation system has been a mature practical science and technology. Computer vision and digital image processing are the core components, which play pivotal role in intelligent navigation system. These two technologies have been widely applied into national defense and traffic industry. Since extreme weather is frequent, there are higher requirement in computer vision and digital image processing technology.
Demodulation of a M-Ray Position Phase Shift Keying System Using Multi-Class Support Vector Machine Classification
Authors: Chen Xian Qing , Song Shu Bo , Zhou Wu
Published: December 2014

In this paper, we introduce a new approach for nonlinear demodulation based on multi-class support vector machine (SVM) classification. We propose to measure the performance of this demodulator with different M which is the parameter of M-ray position phase shift keying (MPPSK) modulation, and compare with other demodulation technique. During demodulation, a few sampling points are chosen for multi-class SVM training and testing, which can reduce the complexity of system. Simulation results show that this new approach significantly outperforms the method of using Phase Locked Loop (PLL) demodulation by 10dB, and also better than Back Propagation Artificial Neural Networks (ANN-BP) classification demodulation. With the growth of M, the data rate increased and the performance become a little worse, but less bit SNR is used to achieve the same Symbol Error Rate (SER) as small M. So, it is an effective method to get better performance by using multi-class SVM classification technique for demodulation in MPPSK system.
Development of Multilayer-Wrapped Cylinder of High Pressure Vessel
Authors: Tian Jin Ying , Zhao Ying
Published: December 2014

In this paper, the pressure vessel of a project is mentioned, the key technique of multilayer-wrapped type cylinder system and inspection technology are discussed. This paper analyzed the main manufacturing difficulties, which can provide reference for similar products.
Anomaly Intrusion Detection Based on Support Vector Machine with Mexico Hat Wavelet Kernel Function
Authors: Wang Ping An , Gan Xu Sheng , Yao Deng Kai
Published: December 2014

The selection of kernel function in Support Vector Machine (SVM) has a great influence on the model performance. In the paper, Mexico hat wavelet kernel is introduced to employ the kernel function of SVM, and theoretically it has be prove that, Mexico hat wavelet kernel satisfies the Merce condition, that is the necessary condition as the kernel function of SVM. Simulation on the anomaly detection shows that the capability of SVM based on Mexico hat wavelet kernel is better than that of SVM based on RBF kernel with a satisfactory result for anomaly intrusion detection.
Research on Thermoelectric Energy Conversion System for Controller in Magnetic Bearing
Authors: Wang Jun , Huang Cong , Jiang Peng Yuan
Published: December 2014

In order to prevent damage caused by instantaneous power failure to high-speed equipment, the thermoelectric energy conversion system for controller of magnetic bearing is studied. The heat source is used by the power loss of supply modules and the cold source is used by heat conduction aluminum block. The semiconductor thermoelectric generator produces direct-current working voltage between heat source and cold source. The overall design method of the energy conversion system is presented. The theory and design of circuits to thermoelectric energy generator, voltage regulator and charging for lithium polymer battery are analyzed. The experiment results show that this thermoelectric energy generator system is feasible and effective. The circuit can be adapted to change in output power due to temperature difference at both ends of the thermoelectric module. It achieves energy storage of the recovery from thermoelectric generator.
Person Re-Identification via Locally Biased Metric Learning
Authors: Hao Chen
Published: December 2014

Person re-identification, which means matching person across non-overlapping cameras in a surveillance camera network, has attracted more and more attention. A lot of metric learning based methods, which generally learn a new distance function under two pair-wise constrains, i.e. similar constrain and dissimilar constrain, were proposed to address the challenging problem due to significant appearance variances caused by pose changes, lighting variations and image resolution differences. However, these methods attempt to satisfy all similar constrains and dissimilar constrains, which may be conflict and cannot be simultaneously satisfied in the practical application. In this paper, we propose a new local metric learning method based KISS metric learning. Comparative experiments conducted on three public standard datasets have shown the promising prospect of the proposed method.
Using Local Transition Probability Models in Markov Random Field for Multi-Temporal Image Classification
Authors: Liu Wu Ping , Wei Fu
Published: December 2014

Making use full of multi-source and multi-temporal information to extract richer and interesting information is a tendency in analysis of remote sensing images. In this paper, spatial and temporal contextual classification based on Markov Random Field (MRF) is used to classify ecological function vegetation in Poyang Lake. The results show that spatial and temporal neighborhood complementary information from different images can be used to remove the spectral confusion of different kinds of vegetation on single image and improve classification accuracy compared to MLC method. Building effective spatial and temporal neighborhood model for information extraction in special application is the key of multi-source and multi-temporal image analysis. Although spatial and temporal contextual classification method is computation demanding, it’s promising in the application emphasizing classification accuracy.
An Improved WSN Centroid Algorithm in Low Density of Anchor Nodes
Authors: Chen Jing , Jia Hong Na , Liu Ming Xin
Published: December 2014

To address the problem that anchor ratio had a strong impact on localization error and coverage in centroid algorithm in wireless sensor network (WSN), an improved algorithm was proposed. This algorithm differentiated the priority of the unknown nodes according to the distance between unknown nodes and anchors. The algorithm was proposed to locate the unknown nodes with the highest priority, and then update them to new anchors. Finally, the rest unknown nodes are located by centroid algorithm. The simulation results show that this improved algorithm can effectively reduce the localization error and enhance the coverage when the anchor ratio is lower.
A Digital Watermarking Algorithm Based on Wavelet Transform
Authors: Yang Xiao Qiang
Published: December 2014

Digital watermarking is a new information security technology, and it uses the information to protect the security of multimedia data hiding technique. Digital watermarking in wavelet domain can make effective use of the human visual system characteristics, and can be compatible with the international compression standard, and the embedding watermark signal energy can be distributed to all of the pixel space. Based on the characteristic of multi-resolution wavelet decomposition and human visual system model matching, digital watermarking algorithm based on wavelet transform is proposed in this paper. The algorithm for tamper proof is designed by quantifying the significant wavelet coefficients to embed watermark sequence. Preprocessing and quantifying the image of this algorithm are studied, which resolves the rounding error and overflow problem brought by the watermarked image pixel values of wavelet transform. Through various attack test and analysis, the experimentation shows that it has strong robustness, can resist many common image attacks, and has strong practicability.
The Dimension Reduction Method of Face Feature Parameters Based on Modular 2DPCA and PCA
Authors: Li Qiao Yan , Quan Hai Yan
Published: December 2014

In face recognition algorithms, Principal Component Analysis (PCA) is one of classical algorithms. But PCA algorithm needs to convert each sample matrix into vectors, which leads to a large amount of calculations in solving high-rank matrix. The essence of Modular Two-dimensional Principle Component Analysis (2DPCA) is that original images are divided into modular images, and image covariance matrix is constructed directly from the sub-images by the optimal projection matrix. But the number of features is still large and correlation still exists in feature extraction, which influences the speed of classification. In order to solve this problem, we proposed a method combining the Modular 2DPCA with PCA to reduce the dimension of features and decrease the correlation among feature parameters. The experimental results based on ORL Human Face Database show that the recognition rate of the algorithm is superior to single Modular 2DPCA or PCA.
The Application Prospect of 4G Communication Technology in Smart Grids
Authors: Fan Song Hai , Yang Shu Hong
Published: December 2014

At first, this paper analyzed the key technologies of the 4G communication system and the main advantages in comparison with the 3G communication system in communication rate, time-delay, spectral efficiency, etc. And then, it analyzed the smart power grids’ demand for communication technology and the limitations of traditional electric power communication. By Comparing with the traditional electric power communication, it demonstrated that the 4G communication system is suitable for smart power grids. At last, this paper prospected the application fields of the 4G communication system in the smart power grids, and also raised the issues and challenges that electric power enterprises will face.
The Research and Practice about the Large Parts’s Large Amount of Interference Liquid Nitrogen Cold Loading Process Technology
Authors: Wang Shang Yin , Sun Rui Xia , Zhou Hong
Published: December 2014

The MP800’s main frame be completed of spindle assembly during the manufacturing process, Processing to the spindle for a new benchmark for the rest of the dimension chain. The frame size is very large, heavier, material for iron, brittleness, uneven heating not easy to bear the impact and tensile force; flange hole on the frame, the size of parts relatively small, small weight, materials for low alloy steel; hole and shaft with high precision, large amount of interference, Relying on the cooperation between the surface to overcome the friction torque and axial force during working, belong to a large part of large interference not detachable fixed connection; the spindle assembly using liquid nitrogen cold fitting technology
Research on Multiuser Scheduling Algorithm Based on the Frobenius-Norm of Channel Matrix
Authors: Zhang Yong Bo , Li Jian Xin , Li Yan Ping
Published: December 2014

In MU-MIMO system when a base station sometimes has not enough resources to satisfy the service application from each user, we should arrange to communicate selectively for a certain number of users according to some appropriate method, i.e. multiuser scheduling. Given necessary channel state information this paper investigated the relationship between the norm of channel matrix and channel quality and studied multiuser scheduling algorithm typically based on the Frobenius-norm of channel matrix which was simulated respectively for equal power distribution and water-filling power distribution in MU-MIMO system model. The simulation result showed that at the same transmitted signal-to-noise ratio (SNR) such scheduling algorithm could be able to lower the bit error rate (BER) effectively and improve the receive capability in comparison to random scheduling.
Improved Algorithm Based on Level Set Image Segmentation Methods
Authors: Han Hong Wei
Published: December 2014

Image segmentation is one of the most fundamental and important areas in the field of image processing and computer vision. The traditional level set methods need initialize the level set function as a distance function. If the initial contour is selected inappropriate, we may not get the desired ideal segmentation result. In order to solve the problem of level set automation initial, we proposed a new image segmentation algorithm based on level set and marker extraction. First, we extract the internal mark as level set initial curve by using Extended-minima transform. And then, through using the local binary fitting active contour model, we evolve the labeled image to get the final segmentation result. The simulation results show that this method has low computing complexity than the traditional level set method requirements, and can effectively solve the initialization problem of level set.
Signal Processing System of Circuit Breaker Based on Virtual Instrument
Authors: Zhao Shu Tao , Jiang Dan , Zhao Xian Ping , Ren Jian Feng , Xu Yu Tao
Published: December 2014

In order to monitor the operating status of the circuit breaker, designed a multi-signal processing system based on the labview. The system acquisite multiple signals synchronous, and combined with MATLAB. Signal feature is extracted with time domain eigenvalues, EEMD decomposition, wavelet decomposition, and finally sent into ELM. The results demonstrate: that the system can achieve the accurate judgment of the operation state of the circuit breaker.
Design and Experiment Study for Acquisition System of the Children Lung Sound Signal
Authors: Zhang Li Ya , Xu Zhui Hui
Published: December 2014

Lung sound contains a wealth of information on organ function and pulmonary physiology and pathology status information, and lung sounds auscultation has become a useful clinical tool in the diagnosis of lung disease. Therefore, lung sound acquisition system is designed using STM32 microcontroller as the master chip. The system uses a stethoscope and electret microphone with signal processing circuit and system flow chart is also given. Finally related experiments is done based on designed system, the results show that: the design of the system can stabilize unmistakable signal acquisition lung sounds.
Communication Interface Design of Mitsubishi Touch Screen and DSP
Authors: Zhang Xu Hui , Xia Hong Bo , Lin Ran
Published: December 2014

Aiming at the disunity problems of the interface types and protocols existing in the communication between the touch screen and the DSP controller, this paper puts forward a kind of communication method based on MODBUS protocol of the Mitsubishi touch screen and DSP controller. By using a standard RS232 interface and MODBUS RTU data transmission format realize the asynchronous communication between GOT touch screen and TMS320F2812 controller. Through the RS485 bus, DSP achieves the communication with ABB frequency converters. Using this method Mitsubishi touch screen, DSP and frequency converter finished communication. So that touch screen can display the working status of the ABB frequency converters in real time. It has been verified by test that data transmission is reliable and good real-time.
Study on the Method and Factors of Preparating Cobalt Blue Pigment from Waste Cobalt Acid Lithium Battery
Authors: Song Yuan , Cheng Guang Hui , Guo Jiang , Li Xiao Le
Published: December 2014

In the solution of sulfuric acid and hydrogen peroxide dissolved waste cobalt acid lithium battery income as raw material, the process and its influence factors of preparation of nanocobalt blue pigment are studied in the paper. The results show that: under the condition of pH 6, metal ion and citric acid ratio was 1:1 dry gel prepared at 135°C calcination, then calcined at 800°C uniform particle size, good dispersion and spinel structure of nanocobalt blue pigment can be directly synthetized.
Research on Precipitation Kinetics of Super Austenitic Stainless Steel with High Mo and N
Authors: Zhang Shu Cai , Zhu Hong Chun , Liu De Gang , Feng Hao , Li Hua Bing , Jiang Zhou Hua , Fan Guang Wei , Zhang Wei , Wang Lei Ying
Published: December 2014

The precipitates and precipitation kinetics of super austenitic stainless steel with high Mo and N (HHSASS) were investigated by optical microscope (OM), scanning electron microscope (SEM) and quantitative metallography method. The results show that the TTP curves are C-shaped, the “nose” temperatures of precipitation are found to be 1000°C with the incubation periods of 120s and 600s, respectively. At 1000°C, some precipitates form as ellipsoidal-shaped and connect along the grain boundaries first. Then a few precipitates start forming as needle-shaped within austenite grains. Until aging for 300min, the field is filled with needle-shaped precipitates. The main precipitates in HHSASS are Sigma phase and Chi phase that are rich in Cr and Mo. The precipitates on the grain boundaries are ellipsoidal-shaped and those in the austenite grains are needle-shaped. About the structures of precipitates need to be further researched.
The Review of Non-Lethal Weapons and Equipment with High and New Materials
Authors: Xie Kuang Sheng , Liu Dong , Liu De Jun
Published: December 2014

To the disadvantages of common engineering plastics materials, way of performance improvement, main features, application scope and the technical performance, through the insulating material, bearing cage and electrical parts of material analysis introduces how to select the suitable material according to the characteristics of engineering plastics. Put forward to strengthen the overall design and materials and applied research, strengthening the concept of integration design, choose the guiding role. It can form a number of technical advantages group project research, to further strengthen the foundation of the new materials and processing technology research to accelerate the development of a new generation of application technology of the composite material, ammunition product development for the future provide efficient and low cost of new materials and creating an overall planning, increase capital investment and to speed up the pace of new material application research on application of countermeasures.
Preparation of Micro-Arc Oxidation Ceramic Coating and Application in Degradation Rhodamine B
Authors: Bu Hai Tao , Jiang Zhao Hua , Yao Zhong Ping
Published: December 2014

A ceramic coating grows on the surface of Q235 carton steel in situ by the micro-arc oxidation method and the silicate electrolyte system; and the phase composition, surface topography and elementary composition of the ceramic coating are analyzed by X-ray diffractometer (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (EDS). The results show that the ceramic coating growing on the surface of Q235 carton steel in situ presents an irregular porous structure; and the electrolyte and the element in the basal body exist in the ceramic coating in the form of amorphous state. And then, the author degrades the rhodamine B solution by the home-made ceramic coating and H2O2Fenton system, so that the degradation rate of the rhodamine B solution can reach 97%; and meanwhile, the degradation rate is not reduced along the increased using times.
Study on the Treatment of Nonlinear Roll Damping in Hydrodynamic Calculation and Structural Analysis
Authors: Sun Wei , Ren Hui Long , Li Hui
Published: December 2014

In order to insure the consistent wave loads in hydrodynamic calculation and structural analysis, the treatment of nonlinear roll damping in roll motion, wave torsional moment and structural analysis are studied. The nonlinear roll damping moment is applied to the structural model by means of the equivalent nodal forces. Taking a supply ship and a FPSO as example, the calculation results show that the problem of torsional moment distribution divergent on the bow and the unbalanced structural model is improved greatly, which would be helpful to provide the reliable basis to design the structures.
Research on Biological Safety and Application of Nano-Materials in Sports Engineering
Authors: Chen Yan Yan
Published: December 2014

nanomaterials have been widely used in sports stadiums, sports turf, athletics track, sports apparel, sports equipment and sports supplements. nanomaterials, however, may have a negative impact on cell lung tissue, liver tissue and brain tissue. Actually, there is a certain biological security risk in it. When the full use of nanomaterials in sports are been taken, the positive effects of development projects and biological research on nanomaterials should be emphasized.
Synthesis and Characterization of a Novel Cationic Type Asphalt Emulsifier
Authors: Shi Lai Shun , Chen Jing Jing , Sun Mei Jie , Wang Ying , Lin Shu Jie , Zhang Yi Fan
Published: December 2014

A novel cationic type asphalt emulsifier of 2-triethylenetetramine methylene-4-nonylphenol was synthesized by the reaction of nonyl phenol, triethylenetetramine and formaldehyde. The optimum reaction condition was obtained. The yield reaches 49.21% at the optimum reaction condition of the feedstock mole ratio of formaldehyde to nonyl phenol 2.8, feedstock mole ratio of triethylenetetramine to nonyl phenol 1.0, reaction temperature 95°C, and reaction time 5 h. The structure of the emulsifier was identified by FTIR. The emulsifier exhibits satisfactory emulsification. The emulsifier belongs to the class of rapid-set asphalt emulsifiers.
Research on Concrete Photochemical Catalysis for NOx Abatement
Authors: Chen Meng , Jin Li Sheng
Published: December 2014

As automobile amount increasing, the atmosphere pollution for the automobile emission becomes very serious. In the paper, we have studied vehicle emissions of decontamination by using nanometer titanium dioxide of photocatalysis method in traffic environment. In the study phases, The test result indicated that degradation effect of nanometer titanium dioxide in road surface was well. It may be used in road traffic to protection environment.
Combustibility and Thermal Degradation of PS/IFR/Graphene Composites
Authors: Yang Jian Wei , Wang Zheng Zhou , Wu Li Xin , Zhuo Dong Xian
Published: December 2014

Graphene nanoplatelets (GNP) were prepared by ball milling, and characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). PS/GNP composites were produced by a melt process. The flammability of PS/GNP composite was evaluated by the cone calorimeter (Cone) and thermal degradation of the composite by thermogravimetric analyses (TGA). Cone data indicate that the incorporation of 1% GNP leads to a 28% reduction in the peak heat release rate (PHRR) compared to pure PS. There is an synerhistic effect between intumesent flame retardants and GNP in a decrease in PhRR in PS. The incorporation of small amount of GNP can improve thermal stability of PS.
Preparation and Properties of the P-Type Transparent Conductive Oxide CuAlO2
Authors: Lv Chuan Mao , Huang Yi , Miao Feng , Zhang Chuan Wu
Published: December 2014

The P-type transparent conductive oxide CuAlO2 was prepared by solid state reaction in this paper. The chemical state, phase structure, microstructure and optical properties were characterized by Differential Thermal Analysis ( DTA),X-ray diffraction ( XRD),Scanning Electron Microscope ( SEM) and Infrared Spectroscopy ( IR) respectively. Testing results show that the product is really p-type transparent conductive oxide CuAlO2. CuAlO2 phase began to form at about 1047.7 °C.It can be formed with high density and a high infrared light transmittance of the conductive oxide at 1150 °C.
The Properties of CrSiN Coatings of Different Si Content
Authors: Xu Xiang Min , Zhang Hao , Luo Fei Fei , Zhou Zi Hao , Duo Shu Wang
Published: December 2014

CrSiN coatings of different silicon content were deposited on 1Cr18Ni9Ti austenitic stainless by d.c. reactive magnetron sputtering in a closed field unbalanced system. Comparative studies on microstructure and mechanical properties between CrN and CrSiN coatings with various Si contents were carried out. The structure of the CrSiN coatings was found to change from crystalline to amorphous structure as the Si contents increased. Amorphous phase of Si3N4 compound was suggested to exist in the CrSiN coatings. The crystalline grain became smaller in CrSiN coatings. With the increasing Si content, the coating deposition rate slew down, while the hardness of coatings improved obviously and the best hardness was about 4200 HV0.01 when the Si content was 1.13%.
A Theoretical Composite Model for Studying the Mechanical Properties of Bimodal Nanocrystalline Materials
Authors: Li Hui Jun , Ju Rong Yuan , Liu Ying Guang , Mi Xiao Dong , Yu Hong Jian , Peng Xiu Lei
Published: December 2014

A new theoretical model is proposed to describe the mechanical properties of bimodal nanocrystalline (BNC) materials.In this paper, we have studied the effect of grain size on the constitutive behavior and fracture of BNC materials. During the plastic deformation, dislocations emission from crack tips on the constitutive behavior of BNC materials are also analyzed, it is found that the nanocracks make a positive effect on the strain hardening instead of leading catastrophic failure. Numerical calculations have been carried out according to the model, the results show that the model can describe the enhanced strength and ductility of BNC materials successfully.
Structure and Nanoscale Polarization Switching Induced by High Frequency Alternating Current in PbTiO3 Polycrystalline Films
Authors: Guo Hui Fen , Guo Shu Xia
Published: December 2014

PbTiO3(PTO) films were successfully fabricated by sol-gel method. We studied the structure and the nanoscale polarization switching property using XRD and Piezoresponse Force Microscopy. The results reveal that the PTO films are single perovskite phase grain films with tetragonal structure, and are polycrystalline materials with no evidence of preferential orientation. The average grain size is about 150nm and a striped multi-domain structure is exhibited in individual grains. Under 15 kHz alternating current of PFM, a significant asymmetry of switching pattern was observed. We suggest that the cooperative action of the built-in electric field at the bottom interface and the PFM ac-voltage lead to the asymmetry switching.
Research on Layered Design of Ring-Shaped Acoustic Cloaking Using Bimode Metamaterial
Authors: Xiao Qian Jin , Wang Lei , Wu Tao , Zhao Zhi Gao
Published: December 2014

The microstructure design of acoustic cloaking is the key to realizing physical parameters required, and it is also closely correlated with realization of such projects as processing capability. The paper investigates the layered design of ring-shaped acoustic cloaking based on BM. According to the principle of transformation acoustics and the theory of PM cloaking, physical parameters of the acoustic cloaking are offered. Further, the relationship between the parameters of each layer of BM microstructure and the physical parameters of acoustic cloaking made of BM is determined. And the layered design of the acoustic cloaking are discussed. At last, the microstructure model of the acoustic cloaking is designed, and the ultra-precise micro-milling center is adopted for trial produce, to make a sample of the acoustic cloaking. The research results provide a kind of layered design method for ring-shaped acoustic cloaking, and indicat that the acoustic cloaking is realizable in engineering.
Research on the Innovation Method of HRM Based on Information Technology
Authors: Zhang Man Jing
Published: December 2014

As an organization s strategy to manage the employment relationship, high-performance work system (HPWS) may lead to superior firm performance and favorable employee outcomes through cultivating the relational aspects of employee’s psychological contract. In this study, we investigated the processes (mediation and moderation) linking HPWS and outcomes at both the organizational and individual levels. Hierarchical linear modeling (HLM) analysis on a sample of 1129 employees from 92 firms in the Pearl River Delta of China indicated that HPWS was associated with increased firm performance and decreased turnover rate at the organizational level, and relational contract fully mediated the cross-level relationships between HPWS and employees affective commitment and in-role performance at the individual level. In addition, perceived supervisor support moderated the HPWS and relational contract relationship. We discuss theoretical and practical implications to end of this paper.
Implement and Research on Electronic Banking Security Assessment
Authors: Cheng Cheng
Published: December 2014

The paper discusses the current application status of electronic banking (E-banking), and presents a method of E-baking security assessment. According to the design objective and risk management objective, combined the external supervision, reference business realize standard, and we assess the security of the bank. This paper attempts to examine the risk assessment of electronic banking system and offers an attentive solution to its problem. The main work of this paper: Firstly, we survey the various security models and then proposed our risk assessment approaches. Secondly, fundamental parameter system matrixes are formed based on various risk factor abstraction and quantification. Thirdly, fundamental parameter systems are transferred to key parameter systems based on assessment requirements of No. 9 China Banking Regulatory Commission. Fourthly, fundamental parameter system quantitative matrix and key parameter system are combined to form system risk quantitative assessment, and expert evaluation approach is adopted to address the problem of security sub-domain weight misguidance. At last, a simple and easy risk assessment management tool is designed and developed for banking entities based on electronic banking risk assessment approach, helping commercial banks to run and manage risk assessment.
Kinematics of Trailer Axle Steering Mechanism
Authors: Zhao Wei , Xiong Jian , Zhao Yu Qing , Song Yi
Published: December 2014

This paper analyses the operating principle of Steady-state Cornering of semitrailer with trailer axle steering mechanism。Analytical method was used for kinematics analysis on trailer axle steering mechanism based on the preceding analysis result. trailer axle steering mechanism was simplified into a five-bar linkage mechanism. Constraint conditions of the five-bar linkage mechanism were discussed based on its actual installing space. Accordingly, size ranges of the critical components of trailer axle steering mechanism were obtained, providing conditions for further study on semitrailer dynamics.
Research on the Application of E-Commerce in the Economic Management
Authors: Jin Liu
Published: December 2014

Currently, the emergence of economic commerce and the development of a revolution in the field of circulation, the new economic phenomenon are closely linked with the knowledge economy, the information economy, the network economy, the digital economy, which get the attention of international organizations, governments and the business community. In this paper, there is the analysis of the definition of electronic commerce, which should be the most important business model with advanced technology of information. This dissertation points out the essential factors and characteristics of modern economic management on the basis of analysis to the concept and development of economic commerce, and discusses the close contact between economic commerce and economic management. It also analyzes the use of economic commerce and accompanied interests through specific theories and actual cases, in addition to discuss typical defects and improve measures of economic commerce.