bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of the Automatic Guided Vehicle Control System Applied to Automotive Logistics
Authors: Zhang Xin , Zhou Hao , Liu Guo Song
Published: September 2014

In order to improve the efficiency of auto parts distribution logistics, to lower the cost of auto production in transportation logistics, and to reduce accidents, in this paper it is designed that an automatic guided vehicle control system to replace the manned tractors in the distribution sites. The system is equipped with an infrared homing device that can ensure the automated guided vehicle (AGV) along a predetermined route automatic driving at a given distribution information, without the needs to manually guided. Test results show that the circuit performance of AGV control system is stable to ensure the accuracy of the tracking in the practical application, and the mean absolute error of the tracking is less than 0.04m.
Photographic Storage Type Downhole Video Imaging Logging Tool
Authors: Song Zhen Xing , Long Xiao Dong , Li Xing Gen
Published: September 2014

The conventional detection technology can not accurately determine the casing damage point and the corresponding physical condition. So it is difficult to determine the working solution. This paper introduces a logging tool which uses the C8051F040 as the main control chip controlling the CMOS cameras for image acquisition and the 2G high-capacity FLASH as the storage for the image information. The scheme has been proved feasible and the obtained image is direct and clear. It has great significance for the maintenance of casing well and the salvage of the objects.
The Switching Power Supply Electromagnetic Analysis General Procedures and Simulation
Authors: Zhang Wei
Published: September 2014

Introduces the use of ANSYS software provides streaming command language APDL written to General Procedures, and the General Procedures for switching power supply in a bridge circuit, by changing the parameters of the circuit can change the topology of the circuit, through simulation experiments, for the same circuit topology, using a common procedure than the GUI user interface modeling using ANSYS modeling time can be shortened to provide more than five times, illustrates the universal validity and effectiveness of the program, with great practical value.
A New Type of IGBT Device with Electronic Enhance Collector
Authors: Lai Yu Shu , Xiong Yan , Zhong Sheng Rong , Xiong Jian
Published: September 2014

A new type of substrate structure Electronic Enhance Collector IGBT (EEC-IGBT) was proposed, and the working principle was introduced in this paper. Compared with conventional IGBT, the substrate of EEC-IGBT was divided by the groove structure composed of oxide and aluminum. Finally, simulation analysis about the EEC-IGBT performance influence by structural parameters was given. The simulation results showed that the turn-off loss of EEC-IGBT was reduced 30% compared with CS-IGBT in the same condition voltage.
The Analysis and Design of COS Interface Model
Authors: Peng Ming Liang , Li Dai Ping
Published: September 2014

First, through analysis on the smart card development environment about the smart card chip structure and chip physical characteristics .Second,it chooses three different chips as the research object to parse out the common ground of inner architecture between the three chips ,to abstract the virtual model of chip, and to design an interface of the COS underlying driver that encapsulates the smart card. Finally it implements driven interface of smart card hardware through function lists.
Simulation on the Springback Property of Sealing Ring in Nuclear Power Plant
Authors: Liu Li , Yu Wei Wei , Yang Dong Wang
Published: September 2014

In order to simulate the thermal influence on springback property of O-ring, based on elastic-plastic contact analysis method of finite element analysis (FEA), numerical simulation of compression-springback course of O-ring was carried out by ANSYS software. The results show that it causes a sharp decrease in the peak force applied on O-ring, corresponding to a decline on the contact stress distribution which may influence the seal ability of the O-ring. The simulation results are in good agreement with the experimental results.
Feasibility Study on Wind Power Distributed Grid Connection in Fuxin
Authors: Zhou Ze , Zhang Xu , Shao Tian Long
Published: September 2014

The Distributed Generation can enhance the system power supply reliability and alleviate the pitch peak and restricted transmission capacity caused by large-scale wind power grid connection and other problems. In Fuxin, the system power supply is inadequate; the wind power integration is restricted and there are rich wind power reserves. Based on the current situation, this paper analyzes the necessity and feasibility of developing the distributed wind power in Fuxin and provides advisory opinions on the development sites and mode of wind power generation.
Estimation of Wind Power Installed Capacity in Fuxin
Authors: Wang Xin , Li Cheng Wei , Zhao Xun An
Published: September 2014

Along with the development of wind power in Fuxin, the electric network composition will be bound to incline towards acceptance of wind power. Meanwhile, the accurate estimation of wind power installed capacity will directly affect the development and planning of electric network composition. This paper, based on the actual operating data of the existing wind farms in Fuxin, in analogy to the overall wind resource in this region, estimates the relatively accurate limit value of wind power installed capacity through theoretical calculation and provides theoretical basis for the planning and transformation of the electric network in Fuxin.
Study on the Maintenance and Management of VRLA Battery
Authors: Li Wen Cui , Yang Yi , Zhang Hao , Lv Jing Xian , Shu Xin Jian
Published: September 2014

The paper introduced the basic characteristics, maintenance requirements and backward cell processing method of Valve Regulated Lead Acid Battery (VRLA) based on the practice of substation communication, elaborated the charge-discharge test battery requirements. This paper discussed the test of battery operation and maintenance, charge and discharge risk. Through the test methods of battery communication charging and discharging and the steps of analysis, we find out the possible dangerous points in processing of charging and discharging, and at the same time, we list the typical examples on safety risk and carry on the analysis on accident cause to put forward the pre-control measures.
Design and Implementation of the Security Subsystem in the Smart Home System
Authors: Ye Qing , Yu Si Meng , Sun Yi
Published: September 2014

The current mainstream security systems are independent existence. They are too complex to achieve for the average families.The networking technology and smart home technology has been developed mature.And the home automation and intelligent basically achieved.It's low-cost and low-hanging to integrate Home security into smart home. Scheme of Adding the home system based on the current smart security module was proposed.The MCU is CC430F5137 produced by TI,and the monitored is finished by the temperature sensor MAX6662,humidity sensor HS1101, smoke sensor MQ-2 detector and camera and other hardware equipments. And complete the interaction with the server through the RF433MHz wireless communication mode, the server finish background analysis and notify the user by the client software.
Design and Analysis of a Kind of Attenuator that Used in Microwave Moisture Contactor
Authors: Xu En Dao , Chen Zhi Ping , Zhang Zhen Jie , He Cun Jun
Published: September 2014

According to design theory of attenuator, combining with the practical situation of microwave moisture contactor, this paper designs the structure of attenuator which center frequency is 10 GHz and the gain is greater than 10dB. Then making simulation and analysis with HFSS, and obtains a group of design parameters that meet the working requirements. Finally, verifying the feasibility of the attenuator by test.
Finite Element Analysis for the Tower of 1.5 mw Wind Turbine
Authors: Zhang Chun You , Wu Xiao Qiang
Published: September 2014

For the development of the wind power industry in Inner Mongolia Autonomous Region, focused on the study of WTG3-1500-type wind turbine in the National Grid Tongliao Ku lun qi amount less if Le Soon South Orleans wind farm, we make static finite element analysis and modal analysis of the wind turbine tower. It comes to a conclusion that resonance of the tower models does not occur during normal operation. The overall structure meets the requirements of strength, providing a basis for the design and optimization of the tower .
Research and Optimization on BM3D Denoising Algorithm
Authors: Guo Zi Yu , Zhou Xiao Bo
Published: September 2014

By grouping up the similar blocks in the picture and Collaborative Filtering, BM3D gets a good denoising effect. But denoising performance declined when the noise enhanced. A reason of poor denoising effect in strong noise was put forward in this paper. Then the denoising ability of BM3D was enhanced by optimizing the parameters.BM3D is proved superior to the traditional filtering denoising algorithm and the optimized BM3D gets a better effect than the original one in strong noise in simulation.
Data Forwarding Based on Distributed-Region for Multi-Hop Infrastructure-to-Vehicle Data Delivery
Authors: Tang Xiao Dan , Liao Xing Xin , Chen Rui
Published: September 2014

With the continuous application and development of ITS, the nodes in VANET have more decision-making ability based on the enhancement of the computing power . It is known that TSF cares about the accurate Infrastructure-to-vehicle delivery. However, it requires all the intersections in the VANET have their stationary nodes, taking a lot of resources and thus making it difficult to be applied directly. This paper presents Data Forwarding based on Distributed-region for Multi-hop Infrastructure-to-vehicle data delivery ,which could guarantee the data delivery delay with the demanding probability, maximizing the effective use of the frequency resources and decreasing the delivery delay jitter in Infrastructure-to-vehicle delivery. The simulation result is consistent with the effectiveness and reliability of the algorithm.
Physical Layer Technology for Extremely Low Speed Communication System in the Computer Network
Authors: Chen Jing , Hu Yi Miao , Wu Le Nan
Published: September 2014

The problem of extremely low speed communication (ELSC) system in the computer network based on multi-position phase shift keying (MPPSK) is considered in this paper. The realization of extremely low speed system is described, and preliminary simulation results of this system are conducted. The BER performance of the MPPSK-based ELSC system is compared with that of MSK modulation, which is commonly used in the ELSC system. Furthermore, the simulation results show that MPPSK-based ELSC system with higher spectrum efficiency has better BER performance than that of MSK modulation, which confirms the efficiency of the proposed system.
A Radiated-Noise Simulator for Underwater Target Based on Vector Time Series
Authors: Ju Yang , Wang Xin Yong
Published: September 2014

The vector time series model for simulating the underwater target radiated-noise is developed in this paper. Experimental results show that the true value lying outside the confidence interval would be a small probability event.
Design of Data Communication between Nios II and Computer
Authors: Yang Fu , Zhang Wen Ming , Jiao Wan Cai
Published: September 2014

The CY7C68013 chip of FX2 series products from Company Cypress is used as the bridge between Nios II and the computer. The data communication between the two parts can be realized quickly and stable used the USB 2.0 interface, which made it possible to save the resource on chip. Thereafter Nios II can be set free from the heavy work of data communication. The designation can be used to made a system for data acquisition or image processing based on Nios II which can be used to solve the bottleneck of low speed.
The Application and Prospects of SOPC Technology in Image-Processing
Authors: Yang Fu , Zhang Wen Ming , Jiao Wan Cai
Published: September 2014

The real-time image-processing by SOPC technology on the hardware is the new direction of the image-processing technology. FPGA is the core component of the image-processing based on SOPC technology. The principles and characteristics of SOPC technology and the commonly image-processing algorithm are introduced in the first part. Then the traditional DSP image-processing technology is compared with the image-processing technology using FPGA chip embedding with the Nios II soft-core processor. As a result, a conclusion that the usage of the SOPC technology can increase the speed and working frequency of image-processing is derived. At last, the application status of SOPC technology used in image-processing is introduced. It can be concluded that the SOPC technology in real-time image-processing have the broad application prospect.
Reliability Assessment for Telecommunication Channel of Electric Power System Using AHP
Authors: Bian Cheng Zhi , Wang Bo , Tang Fei , Chen Yu Xi , Jia Jun , Fang Bi Wu
Published: September 2014

The reliability assessment is a key function that should be performed in advance of any security deployment. Since the reliability of electric power communication channel is influenced by many factors, modification factor set for telecommunication channel of electric power system is needed. According to past research, the confidence for equipment reliability would decline caused by the lack of failure data. Therefore, the paper modified each initial index calculated only by the failure data to obtain the reliability. Comprehensive modification factor is obtained according to the weight of each index calculated with Hierarchy Process whose computing standard is the importance of the modification factor in the actual operation. Finally, an instance communication network of power control system is modeling to test the validity of reliability assessment. The result supports the usefulness of the reliability assessment.
Image Processing Technology for Aerial Camera Manipulator
Authors: Liang Zheng , Yuan Jian An
Published: September 2014

CCD aerial camera is one of the important means of obtaining the image information on the ground, it is through the collection, archiving, and reading to achieved the images acquisition. As the very large amounts of data of the images, it takes a lot of time far more than analysis and processing when archiving and reading, so that not only difficult achieve real-time detection and processing, but also causing a waste of storage space. Therefore, the research of image compression and other processing technology has become important particularly.This paper use the wavelet coding to get images compression for the problem, and design the image processing system of aerial camera manipulator. This system designed by embedded modular, and ARINC 429 bus to achieve communications between the camera and the aircraft systems, make compression to the images which captured by the camera, and deal with the compressed image as stored, local zoom in and out, etc.
Optimization of Quantum Dot Infrared Photodetectors Based on Noise Model
Authors: Liu Hong Mei , Zhang Xiao Lei , Meng Chao , Yang Cui
Published: September 2014

As an important property of the quantum dot infrared photodetector, the noise has attracted extensive attention. In this paper, the model for the noise of the QDIP is built. This model takes the total electron transport and the dependence of the drift velocity of electrons on the electric field into account. The corresponding calculated results not only show a good agreement with the published results, but also illustrate the dependence of the noise on the structure which can provide us with a method used to optimize the structure of the detector devices.
The Simulation Analysis of the Signals Collection Model for Railway Locomotive Remote Communication
Authors: Wu Xin Hui
Published: September 2014

The locomotive frequency shift signals carry important operation information. In order to achieve reliable detection of the locomotive signals, this paper analyzes the signal characteristics of the locomotive and proposes a railway remote communication signals collection model. The model uses the data mining methods to extract the locomotive frequency shift signals by analyzing the locomotive frequency shift with signal classification technology. The separated signals can obtain the low frequency signals with low-pass filtering and shaping. The algorithm is simulated by MATLAB software. The results illustrate the proposed method can effectively separate and collect the shifted frequency signals with some application value.
Research on the Feature Parameter Extraction of Wheat Seeds’ Bad Point Based on Image Processing
Authors: Wen Zhe , Dong Qian , Zhu Jie , Fan Ya Bin
Published: September 2014

It is very important that study the feature parameter extraction of bad point of wheat seeds based on image processing for judging the quality of wheat. Using image processing extract and analyze the collected images information, and based on the collected information analyze the bad point information of wheat seed, then extract the feature parameters. Traditional bad point’s feature extraction methods are completed by the manual operation, and the efficient is lower. Currently, by means of image processing technology can extract the bad point’s feature of wheat seed automatically. To this end, the research status of seed feature extraction based on image processing are reviewed and prospected. Experiments show that the method can better complete the bad point’s feature automatic extraction and recognition of wheat seeds.
A Public Transportation Query System Based on Automatic Correction for Speech Recognition
Authors: Zhang Hui , Wang Yong Qi
Published: September 2014

This paper presents our recent work towards the development of a public transportation query system based on speech error correction and natural language processing. The system enhances the accuracy of speech recognition by combining rules and word frequencies. This paper summarizes and classifies the error types of speech recognition in the field of transportation query, and then brings forth a semantic framework and a word-frequency-precedence mechanism with pinyin-text mapping. For the text after correctly recognizing, the system extracts the origin and the destination by forward-search-backward-match algorithm. And it synthesizes the least transferring algorithm and the shortest path algorithm to find a route. So it has characteristics of humanity and intelligence.
Simulation Research of Top-Hung Mechanism for Open and Close
Authors: Zhou Xu , Wu Ying
Published: September 2014

For the purpose of researching the top-hung mechanism for open and close and the improvement and use of the mechanism, improving the work efficiency, the three-dimensional solid model of the mechanism was established with ADAMS. Each part of the model in ADAMS was set up. Simulation analysis on the working process of the mechanism was achieved. The structure optimization parameters of the mechanism were obtained. The result proves that when the vertical location of the upper endpoint of lid was increased the total support reaction force acting on the lower endpoint of lower rocker by frame reduced. When the horizontal location of revolute joint of lower rocker and frame, the horizontal location of revolute joint of lower rocker and lid were increased the total support reaction forces acting on the lower endpoint of lower rocker by frame added. The sensitivities of the total support reaction forces acting on the lower endpoint of lower rocker by frame on the initial values of the locations of revolute joint of lower rocker and link, the horizontal location of revolute joint of lower rocker and frame are greater. The sensitivities of the total support reaction forces acting on the lower endpoint of lower rocker by frame on the initial values of the vertical location of revolute joint of upper rocker and link, the horizontal location of revolute joint of the lower rocker and lid are smaller. The sensitivity of the total support reaction force acting on the lower endpoint of lower rocker by frame on the initial value of the vertical location of the upper endpoint of lid are least.
Cloud-Based Recognition Technology for Building Crack
Authors: Jin Man , Zheng Wen Kui
Published: September 2014

Problem of identifying building crack is studied to provide technical support for the construction quality. In the building, building crackis an important factor affecting the construction quality. This paper presents a building crack recognition method based on cloud computing. Cloud model is established to pretreat the acquired building image, so as to improve image quality, and perform construction cracks identificationaccording to the processed image. Experimental results show that the improved algorithm for cracks construction identification can improve the recognition accuracy.
Image Mosaic Technology of Dance Movements Based on Digital Multimedia and Matlab Implementation
Authors: Zhou Li
Published: September 2014

In this paper, the digital new media technology is introduced into the dance creation process, and it has designed a new dance creation system. The system combines the image mosaic technology and Matlab software, two kinds of methods and tools, which fuses the modern multimedia technology and choreography together. With the background of digital multimedia, the designed dance movement has more artistic appeal. Use of the image processing system recognizes a group of dance movements, and the dance movements are redesigned after being decomposed. The method of using background rendering has obtained a good artistic effect. Through the statistics of the system processing residual, it can be found that in the process of image processing, the existed residual is low, which meets the needs of system design, and provides a software design method for dance creation.
Design of a Multi-Channel Random Demodulator for Wideband Signals
Authors: Zhao Jian Lin , Huang Wei Qing , Lv Zhi Qiang , Ding Xue Jie
Published: September 2014

The wideband signals in most important applications are sparse or compressible in some sense. A multi-channel scheme for random demodulator without integrator is introduced in this paper. This architecture is based on compressive sensing (CS) and random demodulator (RD), and overcomes the problem of the integrator’s switching scheme injects noise into the signal and deteriorates the reconstructed signal of the RD, which has the same reconstruction guarantees by similar algorithms with the basic RD because the measurement matrix between their is identical, and which resolves some of the practical issues present in prior work. The results of simulation indicate that multi-tone signal can be successful reconstructed at sampling rate downs to 1/10 of the Nyquist-rate, which represents an up to 90% savings in the bandwidth and the storage memory.
An Improved Blind Image Restoration Based on Bi-Spectral Reconstruction
Authors: Liu Li Li , Tian Jian Song
Published: September 2014

Image blind restoration is very important in our life. The image restoration is a ill-posed question so the regularization is much better method. For the regularization method, the most important is to select the regularization parameter [1]. If the parameter is bigger, to be smooth the edge or detail, but smaller, not to be smooth the noise [2], In this paper, we present a new method. Firstly, decomposing the image using wavelet transform, the high frequency information is corresponding to the edge and noise, the low frequency is the flat .We denoise using the bi-spectral reconstruction in high frequency, for the low frequency, we recover by the regularization method .This method has advantage in holding the edge and is simple to choose the parameter of regularization .Experimental results show the good performance, this method is very effective for the image polluted by the symmetry noise.
Study on Shape Recognition Based on Contour
Authors: Zhang Wei
Published: September 2014

Shape is the inherence characteristic of an object in the image, and it is the important character used for the object recognition. So it is significant for object recognition based on shape. This paper presents a contour-based method of feature extraction and shape recognition. First the object contour is translated into a 1-D contour curve. Secondly the curve is smoothed to restrain the noise. The number of peaks of the curve is achieved as well as the areas which contained between adjacent peak-valley, then the latter is followed by Discrete Fourier Transformation (DFT). Then two kinds of features ate extracted which are invariant to translation, scaling and rotation transformations. By using the features, a two-stake recursive algorithm for recognition is proposed. Experimental results show that this method is simple and efficient.
The Design of Dynamic Target Echo Intermediate-Frequency Signal Source of Radar
Authors: Zhang Peng , Ding You Hua , Xia Han Ao
Published: September 2014

The dynamic target echo intermediate-frequency signal source can be used to detecting and repairing receiving system, signal processing system, display system of conventional radar. The output frequency which conducted by the signal source can be adjusted. The range of output signal frequency basically covers different types of radar, which has important practical application value on the maintenance of radar. The dynamic target echo intermediate-frequency signal source is make up of source processing unit, intermediate-frequency unit, monitoring unit, the time reference source, input and output driver board and power supply pulse generation. Pulse processing unit in the signal source is in the core status.
A Region Growing Algorithm Based on Anisotropic Filtering for Image Segmentation of the Liver
Authors: Liu Li Peng , Sun Yong Xiong , Huang Qiu Yang , Yang Sen , Ma Yi Fei
Published: September 2014

According to the characteristics of the liver image and the shortcomings of the traditional region growing algorithm, a modified region growing algorithm is proposed based on the adaptive anisotropic filtering. The first, a anisotropic filtering algorithm is proposed based on adaptive anisotropic filtering and we make images noise reduction through it. Second, we studied a method which can select seeds automatically, then the parameters which are in the region growing algorithm will be obtained through Otsu. These innovations and improvements enable segmentation algorithm automatic, fast, accurate. Experiments show that, the algorithm that this article proposed the region growing based on adaptive image segmentation of the liver, the result is better than the traditional region growing algorithm.
Image Segmentation Based on Least Squares Support Vector Machines
Authors: Wang Xin You , Ning Ya Li , He Xi Ping
Published: September 2014

In order to solve the problem of the conventional methods operated directly in the image, difficult to obtain good results because they are poor in high dimension performance. In this paper, a new method was proposed, which use the Least Squares Support Vector Machines in image segmentation. Furthermore, the parameters of kernel functions are also be optimized by Particle Swarm Optimization (PSO) algorithm. The practical application in various of standard data sets and color image segmentation experiment. The results show that, LS-SVM can use a variety of features in image, the experiments have achieved good results of image segmentation, and the time needed for segmentation is greatly reduced than standard SVM.
Optimization Method of Coherent Accumulation Operation Based on SIMD Architecture
Authors: Liu Song Ping
Published: September 2014

With SIMD functional unit as part of a wide range of application acceleration, how to effectively use this architecture to optimize the application to become a hot spot compiler optimization. This paper discusses the SIMD instructions and pipeline optimization methods. After using MMX instructions and pipeline optimization, real-time to achieve a strong guarantee pure software receiver.
Design of Intelligent Acquisition Terminal for Communication Base Station Parameters
Authors: Zhang Xi Na , Zhang Zhi Zhong
Published: September 2014

The terminal uses data acquisition module to collect antenna parameters of the base station, data is processed by S3C2440 core module and transmitted to management system by wireless communication module. This introduces hardware and software design solution of the terminal. The intelligent terminal can measure coordinates, altitude, azimuth and tilt of base station.
A Discontinuous Transmission Method for LPC Speech Codec
Authors: Xie Hong En , Li Qiang , Shu Qin Jun
Published: September 2014

In order to improve the utilization of transmission bandwidth in voice communication, this paper proposes a discontinuous transmission method for LPC speech codec. Firstly, by using the algorithm of voice activity detection (VAD), the received signal is divided into voice frame and mute frame. Transitional frame is introduced when the voice frame is converted to mute frame. Then voice frames and transitional frames are encoded at a normal rate, but mute frames are encoded into silence description (SID) frame at a lower rate, which is sent by a method of discontinuous transmission mode. The transmission frequency of SID frame is adjusted automatically according to the fluctuation of characteristic parameters of background noise in mute frames. Finally, the method is applied to the simulation in the MELP vocoder, and the results show that this method has better adaptability in the transmission of mute signal and the synthesized background noise presents good comfort and continuity in the auditory perception.
Robust Detection of Abandoned Objects Based on Modified Dual Background Segmentation
Authors: Shi Bin , Wu Bao Zhou
Published: September 2014

A robust real-time method for detection of abandoned objects in complex outdoor environments is presented. The system introduces a dual background segmentation method based on feedback modification. One background updates fast and the other updates slow. The slow background is then modified by the detection result to exclude the static foreground. They contribute to build the static foreground region masks which are used to update a counter. Static foreground regions are then extracted from the counter and further filtered by a light and shadow eliminator. The filtered regions are then classified into abandoned or removed objects by comparing the feature of its surroundings and the interior boundary vicinity of the fast background and slow background. The algorithm is simple and computationally less intensive. Experimental results on public video datasets and real image sequences acquired outdoor show its practicality and robustness to moving vegetation, shaking camera, illumination change and crowed scenes.
Study of Gabor Features and Heart Sound Signal Recognition by the Principal Component Analysis
Authors: Zhang Le Juan , Zhang Lu , LI Zhi Ming , Cui Shi Yao
Published: September 2014

Simple cells Gabor wavelet transform and human visual system in the visual stimulus response very similar. It has the good characteristics of the local space in the extraction of target and frequency domain information. Although the Gabor wavelet does not of itself constitute orthogonal basis, but in the specific parameters can form a tight frame. Gabor wavelet is sensitive to the image edge, can provide good direction and scale selection characteristics, but also insensitive to illumination changes, can provide the illumination change good adaptability. These features make Gabor wavelet is widely used in visual information understanding. The two-dimensional Gabor wavelet transform is an important tool for signal analysis and processing in frequency domain in, the coefficient of wavelet transform with the visual characteristics and good biology background, so it is widely used in image processing, pattern recognition and other fields.
Design and Characterization of Miniaturized Slot Antennas Loaded with Silts for WiMAX/WLAN Applications
Authors: Zhu Li , Gao Xiang Jun , Zheng Long
Published: September 2014

in this paper, a Novel slot antenna for multi-frequency operation with coplanar waveguide (CPW)-fed are designed, which is loaded with slits. The designed antenna operates over the frequency ranges of 860MHz (3.11GHz-3.97GHz) and 1170MHz (5.08-6.25GHz), respectively. The proposed antennas are suitable for WLAN 5.2/5.8GHz and WiMAX 3.5/5.5GHz applications.
MRScheduling: An Effective Technique for Multi-Tenant Meeting Deadline in MapReduce
Authors: Wang Zhong , Suo Bo , Wang Zhuo
Published: September 2014

The multi-tenant jobs scheduling problem based on MapReduce framework has become more and more significant in contemporary society. Existing scheduling approach or algorithm no longer fit well in scenario that numerous jobs were submitted by multiple users at the same time. Therefore, taken enlarging jobs’ throughput for MapReduce into account, we firstly propose an MRScheduling which focuses on meeting job’s respective deadline. Considering the various parameters which are related to job execution time of a MapReduce’s job, we present a simply time-cost model, for the aim that quantifying the number of job’s assigned map slots and reduce slots. Then, an MRScheduling algorithm is discussed in details. Finally, we perform our approach on both real data and synthetic data on real distributed cluster to verify its effectiveness and efficiency.
Remote Data Recorder Design Based on Embedded Linux
Authors: Zhu Ce , Xu Hui , Li Nan , Tian Xiao Bo , Liu Hai Jun
Published: September 2014

Radar, aerospace and wireless communications have a lot of demand for high-speed data acquisition and storage, in these applications, there is a need to control data collection and storage remotely, so researching safe, reliable, real-time remote data recorder is very meaningful. Based on Compact PCI IPC, putting ADC and data acquisition front-end into the chassis, using a dedicated PCI bus interface chip, to transmit data via Compact PCI backplane and record data to high-speed disk array. The platform use embedded Linux operating system to control high-speed and data acquisition. Users can manage data remotely by developing the data acquisition card driver and application software.
A Method of Precision Active Damper Control
Authors: Chi Feng , Zhu Yu , Wu Li Wei
Published: September 2014

This paper discusses the air spring of the lithography mechanic gravity compensation device and the working principle of pneumatic control structure, and introduces the related technical parameter design. Focus on the structure of vibration damping device design and classical control theory.
Mechanical Parts Recognition with 3D Graphical Modeling
Authors: Lu Guo Liang , Zhou Yi Qi , Li Xue Yong
Published: September 2014

Computer vision based mechanical parts recognition has been received much research attention in recent years. In this paper, we present a new framework to address this problem. The framework utilizes the computer graphic technology to model mechanical parts. Recognition is realized by comparing one query image to the instance images using improved affine transformation based on particle swarm optimization (PSO). Our experiment shows that the proposed framework outperforms the conventional invariant moments based recognition methods in recognition rates.
The Development of the Near-Bed Sediment Sampler
Authors: Ying Qiang
Published: September 2014

The determination of sediment concentration of near bed, because of high sediment concentration and disruption of measuring device, is a difficult point in field survey. A water body sampler is developed to get samples of sand-containing water body close to the bed. Then, the basic features like sediment concentration at different level and sediment diameter can be determined. Combined with flow rate measurement, the near-bed sediment runoff rate can also be estimated.
Study on Mobile Network System Based on Moodle Platform
Authors: Hua Hai , Yao Min
Published: September 2014

As a new teaching assistance system, mobile network teaching system is built for those learners whose learning space position and time are irregular and self-learning requests increase. From the view of expanding the mobile function on the Moodle platform, this paper sets up a mobile network teaching system supporting different mobile devices access the system through wireless communication network, which meet teachers’ and students’ needs to get teaching resources conveniently, fast and efficiently and self-learn anytime, anywhere.
A Compression Sensing Sampling Scheme Based on the Golden Section Principle
Authors: Li Xiao Ning , Wu Zhang Hong , Xing Hao Yang
Published: September 2014

In classic radial sampling scheme, angle intervals between adjacent straight sampling lines are the same. And so the coherence between the sampling matrix and the sparse matrix is high. Many pseudo-shadows will occur on the reconstructed image. For this problem, we put forward a novel sampling scheme in which the scan lines are placed in the manner of golden section angle interval. In the resulting sampling matrix, the scan lines scatter randomly on the whole. Experimental results demonstrate that the algorithm proposed in this paper has lower correlation coefficient between sampling matrix and sparse matrix than classic radial sampling scheme and random radial sampling scheme. Image can be accurately reconstructed by collecting less data than the other two schemes.
Design and Implementation of Large-Scale Video Tracking Software System
Authors: Zhao Jun Hui
Published: September 2014

The design of large-scale video tracking software system is studied. With the continuous development of computer video processing technology, large-scale video tracking technology has become very important. This paper presents a design method for large-scale video tracking software system based on Radon detection algorithm. During the video tracking process, numerous video images need to be collected, and then preprocessed with filtering algorithm, through Radon detection method to predict and compensate moving objects trajectory obtained in video to make up for the tracking lag caused by mutated direction. Experimental results show that the proposed algorithm for large-scale video tracking software design can improve the tracking accuracy effectively, and achieve satisfactory results.
The Optimization Design of a Heavy Truck Leaf Spring
Authors: Ye Yao , Wang Feng
Published: September 2014

The traditional design method of heavy truck leaf spring is always the trial-and-error method. In addressing the problem of being multi-objective, the weakness is that there is a large amount of calculation and it is difficult to find the most optimal solution. The leaf spring of the sinotruck ZZ4256N324MD1B is taken as the research object. With the constraint conditions of the spring's overall layout, stiffness, strength, material, size, and the requirements of the manufacturing process, the optimization design model is established. We follow the method of particle swarm optimization algorithm to get the more optimization design on the leaf spring. The calculation of design example shows that the method this article uses of optimization to solve practical engineering problems with complicated constraints is very effective.
An Improved Multilevel Halftoning Algorithm Using Neighborhood Growing
Authors: Tian Yu Min , Pan Rong , Feng Wei
Published: September 2014

In order to reduce banding and blurry edges produced by the conventional multilevel error diffusion algorithm in the digital halftone process, an improved multilevel error diffusion algorithm using neighborhood growing is proposed. According to human visual properties, the algorithm uses banding edge neighborhood alternately grow toward the center to revise halftone image. Experimental results show that the halftone image obtained by the improved algorithm eliminates banding and a better visual effect is achieved with the enhanced edges.
Denoising Processing Technology for Remote Classimage Transmission Based on Cloud Computing
Authors: Tang Yan
Published: September 2014

Denoising processing technology for remote classroom image transmission is studied. In the traditional method of image denoising, the image after denoisinghave obvious spots, communication is not ideal, noise variance estimation is required in practical applications. This paper presents a MCMC image denoising algorithm based on multi-core, throughremote image transmission fusion method toachieve fast denoising process for remote classroom image transmission. Experimental results show that the algorithm improves the operational efficiency, reduces speckle noise, so that remote image is clearer, and denoising effect is very satisfactory.
Spatial Mapping of Vegetation Based on Out-of-Box Vegetation Indices
Authors: Liu Liang , Zhang Jing Jing , Zhang Ming Jiang , Wang Wan Guo , Wei Chuan Hu , Zheng Tian Ru
Published: September 2014

The infrastructures of power grid can be easily damaged by fire disasters. Monitoring the spatial variations in the vegetation fraction is significant to predicate the probability of a fire disaster. While each vegetation indices (VI) computing method tends to suit some problem better than others, and typically have different parameters and configurations to be adjusted before achieving optimal performance on a dataset, we focus on conjunction with many types of traditional VIs' computing methods to improve their performance. Experimental results show that the accuracy of vegetation fraction estimation based on our method is higher than by using any single vegetation indices.
Effects of High Pressure Processing on the Quality of Vacuum Packed Fish Patties
Authors: Zhu Ying Chun , Ma Li Zhen , Tian Yu Jing , Yang Hua , Guo Yao Hua , Zhang Kun Sheng
Published: September 2014

The objective of this study was to evaluate the use of high pressure processing (HPP) as a preservation method of meat products. Vacuum-packaged fish patties were subjected to HPP (300 MPa for 30 min 15°C or 500 Mpa for 10 min at 15°C). Untreated samples represented the control group. The three groups were stored at 4°C for 0–5 weeks. Color parameters, pH, thiobarbituric (TBARS), bacterial growth, and Oxidation-Reduction Potential (ORP) were determined. The results revealed that the 500-MPa treatment inhibited bacterial growth and extended the shelf-life of fish patties to four weeks with insignificant effects on the physicochemical attributes.
Precision Compound Sand Control Screen Internal Flow Field of the CFD Simulation
Authors: Wang Zhi Jian , Zhang Tian Zhu , Shang Jin , Evariste Metsakeu Kong
Published: September 2014

In this paper, calculating fluid dynamics (CFD) method is utilized for analyzing the precision compound sand control screen internal flow field so as to establish appropriate models. During this numerical calculation, by using the - turbulence model is used to simulate the resistance characteristics under different working conditions when crude oil flows through precision compound sand control screen, analyze its speed change rule, flow path and pressure distribution, etc. The use of porous media model to simulate the resistance of the oil screen effect, the oil screen is replaced by the porous jump surface to simulate the strainer of pressure drop. To screen sand control performance and reduce the flow resistance to provide theoretical support, make the reservoir production losses to a minimum.
Stiffened Panels Modal and Stress Analysis Based on ANSYS
Authors: Ma Tian Bing , Zhang Jian Jun , Du Fei
Published: September 2014

Reinforced panel is prone to serious damage and its life becomes shorter under the influence of vibration and noise. It is necessary to test its dynamic strength. In this paper, firstly, using ANSYS to set finite element model of stiffened panels and make a modal analysis to extract the natural modal frequency and vibration type, then conducting frequency response analysis according to the experiment with the boundary conditions and the set frequency range, finally through ANSYS stress analysis, pointing out the maximum point of structural stress response. The research provides a reference for checking the dynamic strength experiments conducted to improve the design and structural strength of stiffened panel.
Physical and Electrochemical Properties of Li2-xFeSiO4/C Cathode Material for Li-Ion Batteries
Authors: Huang Xiao Bing , Ren Jie , Wang Hao , Peng Pei Tian , Feng Shi Qiang , Chen Hong Hui , Zhou Shi Biao , Chen Yuan Dao
Published: September 2014

Li2-xFeSiO4/C (x=0.01, 0.05, 0.1) were successfully synthesized by a traditional solid-state method and systematically investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and the charge-discharge test, respectively. The results demonstrated that Li2-xFeSiO4exhibited the best electrochemical performance among the three as-synthsied samples. it delivered a specific discharge capacity of 142 mAh g-1, 112 mAh g-1at 0.2 C and 2 C, respectively. After 100 cycles at the rate of 1 C, the discharge capacity remained 95.1% of its initial value.
Research about the Effect of Ultrasonic Impact on the Mechanical Property of Welded Butt Joint of P355NL1 Steel
Authors: Yu Ying Xia , He Bo Lin , Zhang Zhi Jun , Shi Jian Ping
Published: September 2014

Surface treatment was carried out on the butt joint weldment of P355NL1 steel by using the HJ-II-type ultrasonic impact machine. The ultrasonic impact current is 1.5A, the impact amplitude is 20 microns and ultrasonic impacting time is 5min. Tensile test was carried out for both treated specimen and un-treated specimen. The fracture observed with the scanning electron microscope of 6360LA type. The experimental results show that although the compressive residual stress can be obtained in the surface of weld toe area, and the grain size in the welded joint can be refined, but the mechanical property of the butt joint of P355NL1 steel can not be improved through the ultrasonic impact treatment. The main reason is that the ultrasonic impact layer is only 120um, it is to thin to compared to the thickness of the specimen.
Effect of Heating Rate on Structures of Carbon Template Prepared from Cotton Stalk
Authors: Wang Qing , Zhang Ya Hui
Published: September 2014

The carbon template was prepared by pyrolysis with different heating rate. The weight loss and anisotropic shrinkage of carbon template was calculated. The morphology and microstructure of carbon were characterized by scanning electron microscopy. The results suggest that the heating rate has evident effect on surface shape of carbon template, but little effect on weight loss and anisotropic shrinkage of carbon template.
Integrating Environmental Aspects in Eco-Design through a Product Information Model
Authors: Ji Xiang
Published: September 2014

Taking environmental factors into consideration is the primary demand and feature of eco-design. But the environmental factors are often numerous, trivial and related to the entire design phases, which make eco-design difficult to carry out. In order to address this problem, Product Information Model for Eco-design (PIMfE) based on the NIST CPM2 was proposed to provide an organizer and a standard representation for eco-design information. By extending the CPM2, environmental aspects, such as environmental norms, regulations, standards, material selection, disassembly, recycling and environmental impact evaluation, were integrated into product information model. Then the key activities of eco-design namely requirement analysis, detailed design and environmental evaluation could be supported by PIMfE. An example of keypad microphone is used to illustrate the suggested product information model and verify its validity.