bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and Characterization of Hardwickia Binata Fiber with Epoxy
Authors: Reddy M. Gunasekhar , Nowshoba P. , Harinath Gowd G. , Sreenivasulu Bathina
Published: July 2014

For hundreds of year’s composite materials have been playing very crucial role in the field of materials. The applications of composites expanded widely to the aircraft, automotive, sporting goods, and biomedical industries. Today natural fibers like ramie, jowar, sisal, flax, hemp, jute, bamboo, banana, etc. are widely used than the synthetic fibers like glass, carbon, ceramic fibers, etc., because these natural fibres offer several advantages over synthetic fibres. In this project a new natural fiber is introduced to develop Fiber Reinforced Composite. Composite material is fabricated by hand lay-up method by using epoxy resin as the matrix and Hardwickia binata fiber as the reinforcing agent. Mechanical properties such as tensile and impact properties of Hardwickia binata fiber reinforced composites are investigated by varying fiber length and weight fraction. The composite plate is fabricated with different weight fractions of hardwickia binata fiber (5, 10, 15, 20, and 25 wt. %) and different lengths of the fiber (2, 3, 4, 5, and 6 mm). This paper concludes that, the tensile properties increases up to 20 wt. % fiber load with increasing fiber length while the impact properties increases with increasing fiber length and fiber load.
Effect of Amino Multi Walled Carbon Nanotubes Reinforcement on the Flexural Properties of Neat Epoxy
Authors: Shekar K.Chandra , Prasad Dr. Anjaneya , Prasad N. Eswara
Published: July 2014

The effect of amino multi-walled carbon nanotubes (MWCNTs) on the flexural properties of epoxy/ nanocomposites was studied. Sonication technique was employed for dispersion of amino MWCNTs in epoxy. The properties of both neat epoxy and nanocomposites extensively studied by using three point bend test and scanning electron microscopy. From the experimental results, it was found that reinforcement with carbon nanotubes improved the flexural properties, namely (a) flexural modulus, (b) flexural strength, (c) nonlinear deformation and (d) total flexural toughness.
An Analytical Approach to Reduce the Stress Concentration around a Circular Hole in a Functionally Graded Material Plate under Axial Load
Authors: Kushwaha Mayank , Saini Parveen K.
Published: July 2014

This paper presents an analytical method to reduce the stress concentration in a functionally graded material (FGM) plate, having a circular cutout, under axial loading. An exponential radial variation and the variation by the power law, of the Young’s modulus is assumed here. This is achieved by decomposing the plate into a number of rings. Muskhelishivili’s method of the complex variable function is used for this piece of work study of stress distribution in the plate. It is observed that the stress concentration decreases as the Young’s modulus increases radially away from the hole.
Nonlinear Dynamic Response of a Thin Plate Embedded in a Fractional Viscoelastic Medium under Combinational Internal Resonances
Authors: Rossikhin Yury , Shitikova Marina
Published: July 2014

Dynamic behaviour of a nonlinear plate embedded in a fractional derivative viscoelastic medium and subjected to the conditions of the combinational internal resonances of the additive and difference types has been studied by Rossikhin and Shitikova in [1]. Nonlinear equations, the linear parts of which occur to be coupled, were solved by the method of multiple time scales. A new approach proposed in [2] allows one to uncouple the linear parts of equations of motion of the plate, while the same method, the method of multiple time scales, has been utilized for solving nonlinear equations. The new approach enables one to find an additional combinational resonance of the additive-difference type, as well as to solve the problems of vibrations of thin bodies more efficiently.
Application of Two Different Methods for Determination of Water and Chloride Transport Parameters of Building Stones
Authors: Pavlík Zbyšek , Fořt Jan , Pavlíková Milena , Černý Robert
Published: July 2014

The transport of 1M NaCl water solution in three different types of sandstones is studied For basic characterization of studied materials, their chemical composition, porosity, bulk density and matrix density are accessed. The chloride transport is analyzed using two different methods. In the first one, the chloride absorption coefficient is measured on the basis of a modified sorptivity concept. The second method consists in carrying out an inverse analysis of experimentally measured moisture and chloride concentration profiles, leading to the determination of chloride diffusion coefficient as a function of chloride concentration, and moisture diffusivity as a function of moisture content. The chloride transport properties obtained for the particular studied materials are compared and the observed differences are discussed.
Ductility Reduction Factors for Steel Buildings Modeled as 2D and 3D Structures
Authors: Reyes-Salazar Alfredo , Bojorquez Eden , Haldar Achintya , Lopez-Barraza Arturo , Rivera-Salas J. Luz
Published: July 2014

The global ductility parameter (μG), commonly used to represent the capacity of a structure to dissipate energy, and the associated ductility reduction factor (Rμ), are estimated for steel buildings with perimeter moment resisting frames (PMRF), which are modeled as 2D and 3D complex MDOF systems. Results indicate that the μG value of 4, commonly assumed for moment resisting steel frames, cannot be justified. A value of 3 is more reasonable. The values of μG and Rμ may be quite different for 2D and 3D structural representations or for local and global response parameters, showing the limitation of the commonly used Equivalent Lateral Force Procedure (ELFP). Thus, the ductility and ductility reduction factors obtained from simplified structural representation must be taken with caution.
On-Line Monitoring Systems for Power Cable Junctions in City Zone
Authors: Li Ti Yin , Zhang Jing , Yao Hai Yan
Published: July 2014

The current on-line monitoring systems for power cable junctions have some disadvantages, such as difficulty of the power supply of detecting devices, the restricted distance of data transmission and the high cost of devices. Because of the disadvantages, they are just suitable for the substation or the power plant. In this paper, a novel monitoring system which combines with the practical running situation of the power cable in the city is achieved. The monitor system uses the low consumption microcontroller C8051F020 as a data acquisition terminal, Wavecom Q2406A as data transfer equipment, and transmits the data collected to the control center by short message of GSM. The monitoring system is especially adequate to big and medium city. The equipment has been practically applied with good effect.
Setting and Discriminant Method of Electronic Fence in Location Services
Authors: Yang Jian Ning , Yang Jian Kun , Liu Guang Rong
Published: July 2014

Regulation activities of motion object in the computer system, and to determine whether a motion object within a specified area activity is a commonly used function of location service. The designated area on the electronic map is a closed polygon graph, namely the electronic fence. On reporting the location of the movement object coordinate relationship between the location of the polygon on calculation and analysis to determine the object is inside the fence or outside the fence. This paper introduces the electronic fence setting and discriminant algorithm implementation. The methods presented in this paper has achieved good results in practical application.
Anti-ESD Improvement of a Power nLDMOS with a Perpendicular Super-Junction Construction in the Drain Side
Authors: Chen Shen Li , Lai Yi Sheng
Published: July 2014

An HV 60-V nLDMOS by adding a perpendicular-type super-junction (SJ) structure and changing pillar widths in the drain side will be investigated in this paper. In order to verify some physical parameters influences on the ESD capability, a TLP testing equipment will be used for obtaining the secondary breakdown current (It2) in different DUTs. In It2values comparison, an SJ-nLDMOS is higher than that of a traditional nLDMOS, and as the pillar width increased the equivalent HBM value can be up to 4.799-kV. Finally, from the relationship between the SJ-nLDMOS and Ref. DUT, it can be found that an SJ structure is good for ESD discharge, as compared with the Ref. group can be increasing by 25%. In addition, the Vt1and Vhvalue of various kinds of SJ-nLDMOS will decline than the traditional nLDMOS.
The Research on Fire Fighting System of Industrial and Civil Buildings Based on Network Video
Authors: Wang Qi , Mu Wen Ping
Published: July 2014

With the rapid development of the electronic technology, multimedia technology and network technology, video surveillance system is going to the embedded, digital, networked direction. Taking full advantage of LSI and networks of scientific and technological achievements, the embedded video surveillance system achieves delicate volume, stable performance, facilitates the communication of the surveillance equipment.The project is in arm microprocessor platform, and porting embedded linux system in it. It completes video capturing, compression, transmission and control tasks. The hard devices select the ARM9 (S3C2410) as the main processor in the system; and the USB camera as the device of video capture. In order to reduce the cost of the product, Based on the architecture and with the open source software in linux, the whole embedded video surveillance system is implemented.
Global Stability of a Non-Smooth Predator–Prey System with Holling I Functional Response and Refuge Effect
Authors: Tian Yuan , Sun Hai Ting , He Yu Xia
Published: July 2014

This paper analyses the dynamics of a non-smooth predator-prey model with refuge effect, where the functional response is taken as Holling I type. To begin with, some preliminaries and the existence of regular, virtual, pseudo-equilibrium and tangent point are established. Then, the stability of trivial equilibrium and predator free equilibrium is discussed. Furthermore, it is shown that the regular equilibrium and the pseudo-equilibrium cannot coexist. Finally, the conclusion is given.
Inhibition Mechanism of Crystal Crack in Copper Thick Plate He-GTA Welding by Adding Deoxidant Element Ti
Authors: Li Yi Nan , Peng Zi Long , Zhang Shan Bin
Published: July 2014

He-GTA welding of 10mm thick copper plates by using independent developed welding material - CuTi alloys was investigated. The crystal crack induced by eutectic of Cu and Cu2O is disappeared completely as the addition of deoxidant element Ti. It can be concluded that the Ti inhibits the formation of Cu2O and combines with O to generate TiO2through the thermal dynamical calculation. As the TiO2has the characteristic of high molt point and low density, TiO2flows upward to surface of molten pool during welding and forms as weld slag at the weld surface after cooling, then the uniform microstructure without crystal crack is obtained finally. In all GTA welding specimens tested, the failure is located in the heat affected zone and the tensile strength is similar to the base metal.
Study on Unsteady Deformation Law in Roughing Stage of Continuous Hot Strip Rolling
Authors: Zhang Xiao Ping , Ren Rui , Kang Hui Ping
Published: July 2014

The vertical-horizontal rolling in roughing stage of continuous hot strip rolling is a common production technique of controlling slab width effectively. Vertical rolling will induce dog-bone, width loss and fish tail in unsteady deformation zone of slab head and tail. A 3D elastic-plastic FEM model for roughing stage of continuous hot strip rolling was established using ABAQUS/Explicit and research on the influences of those technical parameters such as slab width, slab thickness, reduction of vertical roll and horizontal roll on unsteady deformation of metal was carried out. The research work provides a scientific basis for the optimization of roughing rolling technical schedule.
Examination of the Electrolytic Polishing Metal Probe for the Cell Trap by an Electric Field
Authors: Sekido Yuji , Taguchi Kozo
Published: July 2014

Generally, the metal probe for NSOM (Near field scanning optical microscopy) or STM (Scanning Tunneling Microscope) was made with gold or tungsten. However, they were not suitable for the cell trap in our research for the reasons of cost, hardness, etc. In our research, these problems were solved by choosing brass as a material of a probe.
Since the probe production by electrolytic polishing can change the shape of the top, tip angle, and taper length etc, we can propose a probe suitable for a cell trap. Therefore, in this examination, we propose the brass probe by electrolytic polishing with low cost and sufficient hardness for cell trap.
Efficient PEGfusion Combinedoptical Tweezers and Dielectrophoresis
Authors: Mizuta Yoshihiro , Taguchi Kozo
Published: July 2014

Cell fusionis difficult so that research institutions try to fusion with many methods. For example, method of using polyethylene glycol (PEG) is useful and it mainly use in fusion. However cell fusion efficiency of this method is less. In this paper we suggest efficient fusion of PEG with combining optical tweezers and dielectrophoresis (DEP). Optical tweezers is useful tool in cell manipulation ant it has features of non-invasive and non-contact. Using this technique, we can take target cell from many cells. DEP are known to manipulate cell and form pearl chain by non-uniform electric field. We think DEP lead to efficient cell fusion of PEG because probability of cell adhered by only PEG is less.So we performed firstly take protoplast of red cabbage as specific cell from cells to parallel electrodes by optical tweezers and second, we observed cell-cell fusion by PEG with cell formed pearl chain by DEP. Furthermore we demonstrated using optical tweezers at 980 nm, showed manipulation dates of polymer microspheres, yeast cell and protoplast of red cabbage.
A Simplified Fabrication Method of Dielectrophoresis Chip Using Au Thin-Film and Box Cutter
Authors: Nishimoto Kyohei , Taguchi Kozo
Published: July 2014

We propose fabrication method of a planar quadrupole microelectrode for dielectrophoresis (DEP), which is fabricated by Au thin-film, ion coater and box cutter. This method is more cost effective and simpler than previous existing methods. We conducted two experiments for confirming usefulness of the Au DEP chip. Those are separation of yeast cells and trap force of DEP. To separate yeast cells, we used viable and non-viable cells. DEP force arises when an inhomogeneous AC electric field and sine wave frequency were applied to microelectrode. The Au DEP chip is able to distinguish between viable and non-viable cells and separate them by frequency dependence and the flow with Syringe pump. The chip can obtain viable cells which were trapped without contact to the microelectrode. The viable cells can use for fusion or cell culture. Furthermore, we carried out another experiment to investigate the trap force. The trap force of Negative-DEP becomes gradually weak when the frequency increases with 0.1, 0.5 and 1MHz. We were able to confirm relation between trap force and frequency by the Au DEP chip. The trap force has frequency dependence. Through the two experiments, we have established usefulness of the Au DEP chip.
Research the Utilization Rate of Aluminum Alloy Material
Authors: Sun De Ying
Published: July 2014

There are many parts in aerospace fixing device, the 7075 - t351 brand aluminum alloy is a commonly used material of these parts [2].The material has high strength, good toughness, wear resistance and resistance to spalling corrosion resistance and other characteristics; After the machining deformation, comprehensive mechanical processing performance is good [1]. As a result, the materials are widely used in aerospace equipment. Smaller wall thickness, complex structure, multiple azimuth need processing, is the characteristics of these parts, make the individual parts machining material consumption is larger, increase the cost of the material consumption. In this paper, through the analysis of part structure and machining process, adopt to layout method, in order to improve the utilization rate of aluminum alloy sheet metal, reduce the unit cost.
Eletroreduction of Fe2O3 to Fe in Strongly Alkaline Solution
Authors: Gu Shan Lin , Zou Xing Li , Lu Xiong Gang
Published: July 2014

Electroreduction of Fe2O3to Fe in sodium hydroxide solutions has been investigated. It is found that pure iron powder with uniform crystal particles can be obtained by electrolysis of Fe2O3in alkaline solution. The porosity of the iron oxide (Fe2O3) pellet and the concentration of NaOH solution have significant influences on the electrolysis process. The deoxidation rate increases with increasing the concentration of NaOH solution, the grain size of iron products decreases with increasing the concentration of NaOH. The optimum NaOH concentration and pressure load used to fabricate Fe2O3pellet are 60 wt% and 6 MPa, respectively. X-ray powder diffraction (XRD) analysis indicates that Fe3O4was produced as the intermediate product during the electroreduction process.
Study on Innovative Researching Project Management for the Computering Software-Based Enterprises
Authors: Li Qi
Published: July 2014

to the management techniques for the software-based orgnizations on their period of processing a innovative product reserching. All the works and efforts we do can be divided into two sorts: regular works and occasional works, the later one, we named it “the projects”.As the teamleader of the orgnizaion whose job duty is the core of the team to get to reach the final goal, the concept of project managing and planning abbility is the essencial fact. We divide the whole management leadership quality into five actors according to the different manaing situationas, which need different five managing techniques, and propose detailed exlpainnations and introductions to the suit techniques in the managing experience.
SWOT Analysis of Chinese Rural Information Society Policies
Authors: Zhou Ping
Published: July 2014

This paper presents an analysis of strengths, weaknesses, opportunities, and threats (SWOT) for Chinese rural information society development (CRISD) policies in terms of its missions and strategies. After briefly describing the institutional and information society development contexts, the paper draws on literature reviews and questionnaires survey to list of SWOT factors for CRISD. These findings could be used to help adjust the next step work to support decision making for rural information society construction and to provide a valuable reference for other investors who are planning to invest in information society programs in China’s rural regions. This article presents valuable missions and strategic goals through the SWOT analysis for realizing information society development in Chinese rural areas.
Study on the Transformation of Military Logistical of Internet of Things Era
Authors: Lu Ye , Xie Chao , Shang Li
Published: July 2014

The paper discussed the basic conceptions of Internet of Things (IOT), its structure and key technology. It expounded the application principle, development and practice of military IOT technology from the aspects of military logistics, asset management, materiel support, mobilization and barracks management, combined with instances. Finally, the problems in application and current developing status of the military IOT technology were expatiated upon in terms of the military IOT technology standard and RFID technology safety.
Study on the Mechanism of Detecting Flaws in the Transmission Tower Foundation by the Finite Element Method
Authors: Shi Xiao Min , Gao Qiang , Liu Jian Jun , Zhang Jian Guo , Cheng Da Bing , Zhang Nai Long
Published: July 2014

Power transmission towers are major equipment of State Grid,the safety of the tower foundation is very important to the power system,nondestructive testing to foundations is necessary when excavation is impossible.In this paper, the dynamic response analysis of the impact-echo method for power transmission tower foundation with flaws is solved based on finite element method; the result of numerical analysis is consistent with the depth of the setting flaw, which shows the feasibility of detecting flaws in transmission tower foundations with the impact-echo method.
Comprehensive Evaluation of the Development Level of Shanxi’s Real Estate Industry Based on Factor Analysis and Cluster Analysis
Authors: Tang Xiao Ling , Tan Zhu Ling
Published: July 2014

In this paper, on the basis of the effective data, build the evaluation index system of the real estate industry development level, using factor analysis and cluster analysis, analysis the real estate industry development level of 10 cities and 1 agricultural science and technology development zone in Shanxi province . According to factor score and cluster analysis, the level of real estate development in Shanxi Province is divided into four types, and ranking them, finally analysis the results of classification reasons.
Dynamic Pricing and Inventory Temperature Decisions for Fresh Foods with Variable Demands
Authors: Tang Lei
Published: July 2014

Considering the special properties of food supply chain and fresh foods, provides multi-phases inventory model for fresh foods based on shelf life, thereinto demand function is dependent on price and time; in the model shortages are allowed, which assures the fresh foods can be sold out before the time limit. It proves that the total average profit is a restrict concave function of decision variables, namely, the solution to the system equations necessarily satisfy maximum conditions. Finally, numerical examples and relevant conclusions based on the model analysis are presented. It illustrates that through the optimized model’s traverse within the allowable inventory control temperatures, retailers can get the optimal inventory temperature control decision. And so retailers can obtain optimal total average profit by choosing corresponding optimal phasic price under the optimal inventory temperature.
Forecasting High Frequency Data: An ARMA-Soft RBF Network Model for Time Series
Authors: Marcek Dusan
Published: July 2014

In the article we alternatively develop forecasting models based on the Box-Jenkins methodology and on the neural approach based on classic and fuzzy logic radial basis function neural networks. We evaluate statistical and neuronal forecasting models for monthly platinum price time series data. In the direct comparison between statistical and neural models, the experiment shows that the neural approach clearly improve the forecast accuracy. Following fruitful applications of neural networks to predict financial data this work goes on. Both approaches are merged into one output to predict the final forecast values. The proposed novel approach deals with nonlinear estimate of various radial basis function neural networks.
Natural Gas Consumption Forecasting Based on Combinatorial Optimization Model
Authors: Wang Jun Qi , Chen Lei , Li Li , Wang Yi Xu
Published: July 2014

As the estimating of natural gas consumption can provide a better guidance target to gas production and market development ,its accuracy is playing an extremely important role in both the reasonable programming of oil and gas field development management and the promotion of economic benefits. This article builds a mathematical model of combinatorial optimization based on the natural gas consumption data of China, and solves it then by means of MATLAB .Compared with the actual value, the deviation of the combinatorial optimization worked out less than that in the single calculating method. When applied to the real production, this model can provide theoretical evidence to the programming of oil and gas development management and the adjustment of development project as well.
Rapidly Analyze the Fault Tree with Numerical Methods
Authors: Wu Bing , Zhao Zi Hao , Ren Yu Hui
Published: July 2014

In order to take advantage of the computer in the numerical calculation, in view of the fault tree qualitative analysis, a new method of fault tree analysis, numerical methods, was proposed on the basis of absorbing merits of the prime number method and determinant method. The fault tree's minimum cut sets and path sets can be calculated effectively with this method. Consequently, a specific example about calculation of the minimum cut sets was demonstrated with Scilab in this paper.
Hybrid Intelligent Optimization Approach for RFID Network Planning
Authors: Guo Dong Liang , Xiang Qiao , Li Zhong Hua
Published: July 2014

Radio Frequency Identification (RFID) is a kind of short-range radio technology for data acquisition and automatic identification. In large scale application of RFID system, RFID network planning (RNP) is one of the fundamental tasks need to be fulfilled. This paper proposed an efficient hybrid intelligent optimization approach for RNP. A RNP optimization model is designed in considering of coverage, cost, and the radiated power of readers. A hybrid intelligent optimization approach is proposed to optimize the model in a hierarchical fashion. Firstly, we used the intelligent optimization algorithm to regulate the number and position of the RFID readers for the coverage and cost objective. Then, the optimal radiate power of readers is computed by analytic calculation. Experimental results show that this hybrid intelligent optimization approach has the advantage in terms of the quality of RFID network deployment and computation efficiency comparing with the existing approaches.
Research for Wind Power System Reactive Power Optimization Based on Improved Artificial Fish Swarm Algorithm
Authors: Zhang Shun Hua
Published: July 2014

Wind power system reactive power optimization problem is a very complicated nonlinear programming problem, using the traditional reactive power optimization algorithm such as nonlinear programming method, the genetic method, particle swarm algorithm, etc; it's easy to have a slow convergence speed, into a local optimal solution of problem. To solve these problems, we improve algorithm accordingly. According to the actual situation of wind power system, adjust the parameters, especially the number of artificial fish and vision for the dynamic testing, the selection, crossover and mutation in the number of artificial fish for debugging, in order to achieve satisfactory effect.
A Evaluation Model for Valid Prediction of Cabs’ Number Change from Urban Cabs Trajectories
Authors: Ma Wu Bin , Deng Su , Huang Hong Bin
Published: July 2014

the large scale urban cabs trajectories are used for prediction of cabs number change in some applications such as knowledge discovery and abnormal traffic alarm. The traditional methods calculate for many invalid spaces consume much time on invalid calculation. After observing many datasets with the great number of cabs trajectories points, we find a rule that theperiodicityandstabilizationof cabs group number change will be clearer as the number of cabs trajectories points increasing in some space, and the prediction accurate of cabs number change is also have relationship with the periodicity and stabilization. To validate this rule, we first model the periodicity and stabilization of cabs group number change. And a function is found to well fit the model value as the change of cabs group number, proving the rule we have found. Finally, we show that how this rule can be used to decrease the calculation time of valid traffic prediction. Experiment shows that the rule we discovered exists in Beijing and San Francisco datasets and the rule can conveniently and efficiently used to valid traffic prediction.
Web Page Ranking Algorithm Based on the Meta-Information
Authors: Li Xin Li
Published: July 2014

PageRank algorithms only consider hyperlink information, without other page information such as page hits frequency, page update time and web page category. Therefore, the algorithms rank a lot of advertising pages and old pages pretty high and can’t meet the users' needs. This paper further studies the page meta-information such as category, page hits frequency and page update time. The Web page with high hits frequency and with smaller age should get a high rank, while the above two factors are more or less dependent on page category. Experimental results show that the algorithm has good results.
Experimental Study on the Transverse Stiffness of WJ-8 Rail Fastening
Authors: Liu Can , Zeng Zhi Ping , Wu Bin , Yuan Jia Yu , He Xian Feng
Published: July 2014

The study of WJ-8 rail fastening is about the relationship between lateral horizontal force and rail’s lateral displacement, and the rail fastening’s transverse stiffness was obtained since the rail slipped. The rail lateral displacement was measured by using the loading device of rail’s lateral horizontal force which was changed as needed. Moreover, when the lateral horizontal force changes, it was analyzed that how it affected rail’s lateral displacement and rail fastening’s transverse stiffness under different bolt torque conditions. Therefore, the recommended value of transverse stiffness is acquired which is based on analyzing the test results.
E-Bayes Estimation of Rayleigh Distribution Parameter
Authors: Liu Huan Bin , Yin Tong , Wang Cheng
Published: July 2014

This paper provided the E-Bayes estimation and hierarchical Bayes estimation of Rayleigh distribution parameter under q-symmetric entropy loss function, when the prior distribution is Beta distribution, and the relation between E-Bayes estimation and hierarchical Bayes estimation was discussed. Numerical simulation shows that the results of these two types of estimation are close, and E-Bayes estimation is more convenient in terms of calculation complexity.
An Animation Video Resource Conversion System Based on Supercomputers
Authors: Zhong Kun Hua , Chen Yu Wen , Liu Lei Feng , Zhang Ju
Published: July 2014

The rapid development of mobile internet has brought new opportunities to the development of the animation industry, but the network traffic bottlenecks animation video promotion. Based on the super-computing resources, using the Python language, adopting FFMpeg, OpenCV, HEVC and PyGTK technologies, we designed and implemented an animation video resource conversion system to solve the traffic bottleneck in this paper. The conversion system provides HEVC parallel conversion, video serial conversion, video frames extraction and video playback functions, effectively promoted the promotion of animation products distribution.
An Image De-Noising Algorithm Based on K-SVD and BM3D
Authors: Li Jun
Published: July 2014

The existence of noise affects the quality of the image seriously. The image de-noising algorithm based on KSVD appears fuzzy, where weak texture smooth area also can appear false textures, at the same time, when the noise was very big, the de-noising effect would not always be ideal. This paper proposed an image de-noising method based on K-SVD dictionary and BM3D. The algorithm can solve image weak texture fuzzy problems and weak edges effectively. The experimental results show that, compare with K-SVD de-noising algorithm, this algorithm has a good de-noising ability, which keeping the detail and the edge character of the image better.
Removing the Stripe Noises Interference on the Hα Full-Disk Solar Image Based on Multiscale Transform
Authors: He Shuan , Zheng Sheng , Huang Yao
Published: July 2014

Hα full-disk observation is an important observation of the sun. It has an important significance to the solar physics research. But its observation process may be affected by the system, resulting the observed images contain stripe noises. This paper describes a method to remove the particularity of stripe noises contained in the Hα full-disk solar image. This method includes the following four steps: First, decomposing the sun image into multiple detail scales by the multiscale transform; Second, doing special two-dimension signal conversion on the detail scales mainly containing the noises signal; Third, doing the adaptive Gaussian filtering on the two-dimension signal and restoring the processed signal to the image; Finaly, using the multiscale inverse transform to obtain the final restoration image. Experiments show that this method can effectively remove this type of noise interference from the solar image and improve the quality of the solar image.
Research on Scene Organize Algorithm Based on BVH with Dynamic Rendering Tree
Authors: Xu Li , Liu Mao Zhen
Published: July 2014

: The real-time rendering of 3D scene need excellent algorithm to support scene management. After considering the algorithm complexity and scene scale factors, combining the advantages of Bounding Volume Hierarchy (BVH) and rendering tree in scene management, this paper puts forward a kind of scene organize algorithm, to solve the problem of render states redundant calculation when using BVH technology to solve the problem of deformable collision detection, by choosing the appropriate strategy of Hierarchy Bounding Volume tree construction and optimizing rendering tree of the scene. Experiments prove the proposed algorithm can effectively improve the rendering efficiency of 3D scene, enhance the visual effect.
A Content Based Image Retrieval Model Using Feature Space Dividing
Authors: Huang Guan
Published: July 2014

This paper introduces a model for content based image retrieval. The proposed model extracts image color, texture and shape as feature vectors; and then the image feature space is divided into a group of search zones; during the image searching phase, the fractional order distance is utilized to evaluate the similarity between images. As the query image vector only needs to compare with library image vectors located in the same search zone, the time cost is largely reduced. Further more the fractional order distance is utilized to improve the vector matching accuracy. The experimental results demonstrated that the proposed model provides more accurate retrieval results with less time cost compared with other methods.
A Statistical Model for Real-Time Video Moving Target Detection Based on Bayesian Statistics
Authors: Zhang Zhi Hong , Zhang Shu Ling , Yang Bin , Bai Xin
Published: July 2014

Video moving target detection is an important foundation issues in computer vision, based on the analysis of the advantages and disadvantages of each existing moving target detection model, using Bayesian statistical theory as a framework, proposes a statistical model that can detect moving objects in video in real-time. The model combines time, space and color and other relevant information of pixel, divides and extracts Video segmentation’s foreground. By selecting the appropriate reference background can improve the precision and accuracy of the detection.
An Improved Moving Object Tracking Method Based on Graph Cuts
Authors: Zhang Ming Jie , Kang Bao Sheng
Published: July 2014

In order to improve efficiency of object tracking in occlusion states. A method to detect and automatically track was present in a surveillance system. Firstly, a graph cuts method was employed to segment image from a static scene. To identify foreground objects by positions and sizes of the obtained foreground regions. In addition, the performance to track objects was improved by using the improved overlap tracking method, the tracking method was used to analyze the centroid distance between neighboring objects and help object tracking in occlusion states of merging and splitting. By the experiments of moving object tracking in three video sequences, the experimental results exhibit that the proposed method is better than the traditional method.
Compact Wake-Up Word Speech Recognition on Embedded Platforms
Authors: Xing An Hao , Li Ta , Pan Jie Lin , Yan Yong Hong
Published: July 2014

The wake-up word speech recognition system is a new paradigm in the field of automatic speech recognition (ASR). This new paradigm is not yet widely recognized but useful in many applications such as mobile phones and smart home systems. In this paper we describe the development of a compact wake-up word recognizer for embedded platforms. To keep resource cost low, a variety of simplification techniques are used. Speech feature observations are compressed to lower dimension and the simple distance-based template matching method is used in place of complex Viterbi scoring. We apply double scoring method to achieve a better performance. To cooperate with double scoring method, the support vector machine classifier is used as well. We were able to accomplish a performance improvement with false rejection rate reduced from 6.88% to 5.50% and false acceptance rate reduced from 8.40% to 3.01%.
Based on Fractional Brownian Motion and Fourier Descriptors of the Side Face Recognition Algorithm
Authors: Wu Hong , Tang Gui Xin , Han Tao , Jie Bai Hao
Published: July 2014

This paper proposes a kind of the side face recognition algorithm base on Fractional Brownian motion and Fourier descriptors. This method is mainly innovating for feature extraction and making up for a shortage of the side face recognition algorithm. Firstly, by Fractional Brownian motion of Hurst index will get silhouette extracted. Then we through Fourier descriptors to obtain the desired feature points. Further study of this algorithm can solve the side of the face recognition rotation, scaling, and translation transform the impact. Comparative characteristics will make distance classifier and BP neural network classifier. This article also processes the analysis of the algorithm and the future development.
Study on the Stainless Steel 1Cr18Ni9Ti Micro-Hole Drilling Experiment
Authors: Li Ben Hong , Liu Zhi , Wang Hao , Zhong Zao Sheng
Published: July 2014

Stainless steel is difficult to machine, especially micro-hole machining. In order to obtain the effect of drilling force by tool material and cutting parameters, the drilling experiments on stainless steel 1Cr18Ni9Ti have been done by diameter of 1.2 mm containing cobalt high speed steel and carbide drill. According to the experimental results, analysising the reason of drilling force change under different parameters and establishing a carbide drill drilling force empirical formula which combined with the regression analysis method.
Pitch Detection Method Based on Morphological Filtering
Authors: Wang Yao Qi , Wang Xiao Peng , Wang Lv Cheng
Published: July 2014

A new method of pitch detection based on morphological filtering is proposed. Noisy speech signal is filtered by morphological filtering to remove the noise and highlight pitch, and then HHT is employed to get Hilbert-Huang spectrum and to calculate instantaneous energy and its derivative. The moment of glottal opening and closing can be accurately located through tracking mutation of instantaneous energy, so that variation of pitch period can be accurately tracked. Compared with other traditional method of pitch detection, this method not only truly describes non-stationary and non-linear characteristics of speech signal, but also it is an adaptive process for the analysis of the speech signal. The experiments showed that the method has strong anti-noise and can accurately detect the pitch of speech in low SNR.
LED-Based 3-DMD Volumetric 3D Display
Authors: Jing Chang Long , Feng Qi Bin , Zhang Ying Song , Yang Guang Lei , Song Zhi Gang , Pei Zhi Qi , Lv Guo Qiang
Published: July 2014

A solid-state volumetric true 3D display developed by Hefei University of Technology consists of two main components: a high-speed video projector and a stack of liquid crystal shutters. The shutters are based on polymer stabilized cholesteric texture material, presenting different states that can be switched by different voltage. The high-speed video projector includes LED-based light source and tree-chip digital micro-mirror devices modulating RGB lights. A sequence of slices of three-dimensional images are projected into the liquid crystal shutters locating at the proper depth, forming a true 3D image depending on the human vision persistence. The prototype is developed. The measurement results show that the screen brightness can reach 149 nit and no flickers can be perceived.
Study of Velocity Measurement Error Analysis and Improving Velocity Measurement Accuracy on High-Speed Train
Authors: Hou Tao , Fan Duo Wang , Niu Hong Xia
Published: July 2014

For the problem of a big velocity measurement error,analyzed the velocity measurement error and studied the method of improving velocity measurement accuracy for the velocity measuring system of high-speed train.In this analysis and method, the speed error analysis was carried out based on understand the characteristics of the high-speed train speed sensor, and found that there is a bigger error. Then discussed the influence of large errors of the control system, and then put forward the improved M/T speed measurement method to solve the error problem. Finally, calculated velocity-measuring error for the improved M/T speed measurement method. The results show that the accuracy of speed has improved greatly. The research method can improve the accuracy to meet the requiring of train safety and smooth run.
Application of Mobile Data Acquisition Technology in Highway Lightning Protection
Authors: Zhang Yan Hua , Jiao Xue , Zhong Ying Ying , Zhou Jun Chi , Yuan Ju
Published: July 2014

The inspection of lightning protection system is developing gradually presently,while it is still in a relatively backward stage, data acquisition method is old, measuring conclusion is not real-time, data measurement is out of line with the standardization of lightning business. The service area and toll station of highway prone to lightning strikes for the isolated location. Meantime, there is no lightning protection facility or facilities are not perfect, lightning accidents happen sometime which caused heavy losses to the highway with a lot of sensitive electronic equipment. The inspection of highway lightning protection should be strengthened, the mobile data acquisition technology is introduced to the highway lightning inspection in order to make the lightning protection devices play an effective role. The data acquisition process and application are described, it can ensure the diversification of data, the real-time transmission of field testing data, further standardization of the lightning inspection process and the quality of inspection to ensure safe and effective operation of building and electromechanical systems.
Anti-Bias Association Algorithm for AIS and Radar Tracks Based on Centroid Reference Topological Characteristics
Authors: Qi Lin , Wang Hai Peng , Liu Yu , Wang Cong
Published: July 2014

To achieve fast and accurate association for AIS and radar tracks, provide associated track-pairs for subsequent sensor bias registration and situational fusion, this paper presents an anti-bias association algorithm for AIS and radar tracks according to centroid reference topological characteristics (CRT). The algorithm describes the topological characteristics of track-points set on the basis of targets position relative to the centroid of the set to achieve AIS and radar tracks fine association in the presence of radar bias. The proposed algorithm outperforms the traditional tracks association algorithms based on image matching principle (IM) or targets reference topology feature (TRT) in terms of real-time performance, simultaneously has high correctly associated rate. Simulation results show that the falsely associated rate of this algorithm maintains 0, the correctly associated rate maintains above 85%. It can provide reliable associated track-pairs for system errors registration; while the average time-consuming of the algorithm is 1/4 and 1/417 of TRT and IM algorithm, the practicality has been significantly improved.
Equipment Modification for Friction Stir Joining Based on PLC
Authors: Ji Ling
Published: July 2014

In order to achieve the common drilling and milling machine for friction stir joining (FSJ) , A model ZXTM-40 equipment is modified., it’s workstation transmission mode and axial direction press mode are mechanical transmission, through the modification, install stepper motors and drives , write program code ,PLC control the motor ,it can work to achieve Longitudinal automatic movement . the speed of workstation can input through the Interactive panel, the control system operate parameters to achieve semi-automated operation of equipment and overtravel protection.. In the vertical direction,install a sleeve on the handle, the sleeve has scale and recesses, it can control the pressure measurement of friction stir pin. weights hanged on the sleeve, research proves the optimum parameters are 3KG weights and 40CM away from the center, Workbench moving speed of 125mm/min, rotation speed of 730r/min, it can join 1mm thick 2024 aluminum by FSJ, appearance of bead is good.
The Research on Sensor Fault Diagnosis Based on the SVM Prediction Model
Authors: Zhu Ya Jun , Yu Xiang Mei , Yang Bao Hai
Published: July 2014

A novel method for sensor fault diagnosis based on support vector machine (SVM) prediction model was proposed. This paper put forward the principle of SVM condtruction process and the system parameters obtained from using dynamic model identification of sensor. The sensor fault was diagnosed on line by prediction model, which avoided that BP algorithm must have mass data and is likely to fall into local minimum point. Compared to the traditional motheds, it was much more effective and accurate.
Research on Galvanized Layer Uniformity Detecting Technology of Transmission Angle Steel Tower Materials
Authors: Jiang Jia Yin
Published: July 2014

Combined with the actual working condition and related standards, the galvanized layer uniformity detection of transmission tower materials is studied and the sampling scheme of galvanized layer uniformity detecting is formulated. With the help of the diagonal test point arrangement form which is used in flatness error detection, a double cross shaped test point arrangement form was established for the galvanized layer uniformity detecting of angle steel tower materials. In order to quantitatively evaluate the thickness uniformity of the galvanized layer and realize information management, the X-Rs control chart was applied in the galvanized layer uniformity detecting.
The Approach for Analyzing Motion Mode of High-Order Control Systems
Authors: Zhang Sheng Guo , Wang Kai , Dang Xiao Ping
Published: July 2014

This paper aims at exploring the modal analysis approach of a motion control system. Based on the inverse Laplace transformation, the step response of a control system is derived. Then this response is associated with the modal analyses in state space theory. And then the motion mode of a control system is analyzed with the modal analysis method. Application example indicates that this approach can be used to analyze the high-order control system successfully. This facilitates the motion mode analyses of high-order control system very much.
The Design of Valve Block of Megawatt Wind Turbine Hydraulic Yaw System and AMESim Simulation Model
Authors: Gao Jie , Yan Li Wen , Ai Cun Jin , Xie Hui
Published: July 2014

In view of the current 1.5 megawatt wind turbine,this paper designs a set of corresponding hydraulic system,mainly including the system of pumping station valve block the main part by UG 3D software,the AMESim software is used to establish the yaw hydraulic system model and the analysis of the simulation.
Modeling for the Flow Coupled Secondary Hydraulic Lifting System of the Excavator Bucket
Authors: Zang Fa Ye , Wang Yong , Kong Xiang Zhen
Published: July 2014

The flow coupled secondary hydraulic lifting system of the excavator bucket was presented, also its structure, working principle, and performances. The math model of the lifting system is established, using the math mode to control the hydraulic accumulator, and then realize process controlling of the energy recycling and reusing. Further, the system pressure range was expanded, the energy reusing effect and efficiency were improved.