bluuebunny/crossref_metadata_2025 huggingface dataset:
Research for Algorithm of Shot Boundary Detection Robustness Based on Fuzzy Clustering
Authors: Feng Hong Cai , Hu Wei Gang , Gong Yong
Published: June 2012

In order to reduce the effects caused by flash, subtitles, camera movement and other factors on shot detection, the method of segmenting images using histogram is improved. The frame difference between blocks are used as characters, and the weight of the blocks are used as feature weight to do fuzzy clustering . The images are pretreated according to the characteristics such as video mutation and gradually changing border. The effect that the factors of flash, subtitles, camera movement etc have on the shot boundary detection is excluded, finally the shot boundary detection is realized. The experiment shows that , whatever the video is ,the method has relatively strong robustness.
Research on Architecture of Combat Agent Based-on Command Mechanism
Authors: Liu Yong Hong , Xue Qing , Cao Bo Wei , Wei Yang
Published: June 2012

Combat simulation has become the important means to the training and design of combat simulation. Within the progress of researching and developing combat simulation system, how building up the environment that comes close to the realistic combat field, on the departure that whole describing the activity of combat unit in the combat field, This paper has put forward the concept of CABC (Combat Agent Based Command) according to the Agent of the instruction mechanism, it has combined the autonomy and restriction into fact, can react with the agents in the environment proactively or passively. CABC is autonomous, proactive, social and intelligent.
Research on Image Mosaics Algorithm on the Basis of Feature Points Matching
Authors: Shi Xiong , Chen Jun
Published: June 2012

Stitch points is determined through finding corresponding feature points of two images and its matching position is determined; image mosaics is accomplished through fusing process in overlapping area. Experiment proves responsibility of algorithm proposed in this paper and good result is gained.
Executable Program Slicing
Authors: Shi Sheng Hui , Zhu Qun Xiong , Geng Zhi Qiang
Published: June 2012

With the complexity of language structure, the problem of slice’s executability has gradually become people’s focus of attention. The research combines program slicing and path coverage according to their features, makes an attempt to propose the model of executable program slicing, and presents the executable slicing algorithm, which plays an important role in the automation of software analysis.
LED Display Image Correction Based on Computer Simulation
Authors: Zheng Xi Feng , Chang Feng
Published: June 2012

For the purposes of correcting the LED display image, a method based on computer simulation is proposed. First, the development of the LED display panel is introduced. Second, analyze the causes of the problem which image in LED display panel has serious high non-uniformity, and introduce the existed correction techniques which are used to reduce the non-uniformity of LED display image. Simultaneously, point out the ground for shortcomings of these techniques. Third, describe the principle of correction method based on computer simulation detail from two steps, which are the luminous collection and luminous copulation. Forth, describe the realization steps of this method in accordance with the third step. Finally, this method is supplied in a LED display panel, whose resolution is 640×480. Experimental results show that this method is able to reduce the non-uniformity of images from 11.06% to 0.98%..
Using Cellular Ant Colony Algorithm for Path-Planning of Robots
Authors: Wu Yong Fen , Zhang Xin Xing , Wu Jun Qing
Published: June 2012

To overcome some shortcoming existed in the conventional ant colony algorithms, e.g. slow converging and trend for falling into local convergences, a novel method for robot path planning is introduced based on cellular ant colony. Firstly, two ant colonies were set to run with different strategies. Secondly, the existing ant colony paths were evolved by following the cellular rules, so that the ants could jump from the current region into the region with a solution. Experiment results showed that the proposed algorithm proved to be stable, and that the global optimal path was found in a short time in a number of iterations.
Research Summary of Chaos in Power Systems
Authors: Zhou Xue Song , Liu Xin Fang , Ma You Jie
Published: June 2012

It has been found that there is a very complex and chaotic phenomena in the power system and other nonlinear system. Chaos is a very complex phenomenon caused by the interaction of the parameters in nonlinear systems, its appearance will accompany the non-periodic、seems to be without rules、sudden or paroxysmal mechanical and electrical oscillation of the system, which will cause widespread blackout and disintegration of the system when the oscillation becomes serious. Therefore, due to the wind power system is a typical large-scale complex non-linear system, so that chaotic phenomena will also occur under certain conditions and chaos will influence the stable operation of the wind power system, so the chaotic research are particularly important along with the fast development of grid-connected wind power technology.
Characterization of TiC/Ti5Si3 In Situ Synthesis Composite Materials on Ti-5Al-2.5Sn by Argon Tungsten-Arc Welding Deposition
Authors: Yan Wen Qing , Dai Le , Gui Chi Bin
Published: June 2012

TiC/Ti5Si3composite materials on Ti-5Al-2.5Sn were in-situ synthesized by argon tungsten-arc welding (GTAW) deposition from powder compacts with the molar ratio of Ti:Si:C=3:1:2. X-ray diffraction (XRD) techniques and scanning electron microscope (SEM) were employed to characterize the microstructure of the composites. The effects of depositing times on the surface microstructure of the tracks deposited were studied. From the products synthesized in this work, the content of TiC/Ti5Si3in-situ composites on the surface of the tracks differed from each other by depositing one, two, three, and four times, respectively. The minimum impurities were obtained and the distribution of TiC/Ti5Si3. In-situ composites were most homogeneous in the track surface by depositing three times.
Iterated Hybrid Localization Algorithm for Random Wireless Sensor Networks Based on Centroid and DV-Hop Algorithm
Authors: Nie Xin Hua , Pan Zhong Ming
Published: June 2012

Localization has been a major challenge in Wireless Sensor Networks (WSNs), especially for the applications requiring the accurate position of the sensed information. In this paper, we propose a new localization algorithm based on the Centroid algorithm and the DV-Hop algorithm to improve the positioning accuracy without increasing any extra hardware for sensor nodes. This paper firstly analyzed the advantages and disadvantages of the centroid algorithm and the DV-Hop algorithm. Then we put forward an iterated hybrid algorithm, which is comprised of three steps. Firstly, obtaining the initial location of each unknown node by using the centroid algorithm; secondly, computing the distances among each unknown node to the anchor nodes based on the DV-Hop algorithm; finally, Taylor Series Expansion (TSE) algorithm is utilized to estimate coordinate of each unknown node. Simulation results show that our iterated hybrid algorithm has better positioning accuracy.
The Anti-Interference of the PLC Application System
Authors: Xu Min Dao
Published: June 2012

The working environment of the PLC application system is bad as usual, and there are kinds of interference around. In this paper some main sources of the disturbance of the PLC application system and the interference suppression measures was discussed in order to apply the PLC system reliably.
An Improved Spectral Clustering Algorithm Using Minimum Maximum Principle
Authors: Xu Xiu Fang , Xu Sen , Zhou Tian
Published: June 2012

In this paper a novel document clustering spectral algorithm is proposed, which uses a minimum maximum principle. Firstly the low dimensional embedding of documents is attained by eigenvalue decomposition, and then a minimum maximum principle is used to get the initial seeds for k-means algorithm. Finally, K-means algorithm is performed to get the clustering results. Experimental results show that the clustering results found by this method is better than traditional clustering algorithm.
A New Algorithm of Flight Rerouting Path Planning in Severe Weather
Authors: Wang Fei
Published: June 2012

In order to solve the rerouting problem of air traffic management in severe weather areas, a rerouting path planning problem was researched. First, the convex polygon was used to design danger zone. Then, rerouting path planning model was established. After that, a new algorithm used to determine the initial reroute points was proposed. Finally, two examples of the rerouting problem caused by thunderstorms occurring in Southwest China were studied. Compared to the current existing method in real operation, by using this algorithm, the number of reroute points was effectively reduced, and the danger zone was avoided. Additionally, Compared to the geometric algorithm, by using this algorithm, the rerouting path length was reduced by 2.9% and 5% respectively. The results indicate that the algorithm proposed in this paper is effective and practical.
A Queue Dispatch Optimizing Method for Elevator Traffic System
Authors: Liu Jian , Zhang Ting , Pian Jin Xiang , Han Feng Yan , Wang Li , Xie Jun
Published: June 2012

In this paper, a new method is presented to optimize the elevator traffic system based on queue model. The application of this method is studied in detail. Parameters for the elevator running including number of elevator passenger, average waiting time and arriving ratio, and the relationships between them have been analyzed as well. Therefore, the dispatching of elevator dynamic partition can be done. The actual data of rush hours are used for simulation tests. The simulation results show that this method has good performance. The method is a more practical control strategy especially in rush hours.
An Improved Self-Learning Scene Matching Algorithm
Authors: Wu Xu Sheng , Tie Ming , Wang Ling
Published: June 2012

Scene matching combined guidance is one of key effective approach to improve missile’s attacking precision. The paper introduces a scene matching combined guidance system. With the given reference image, the system can match the real-time images accurately through the improved self-learning mean removal normalized product correlation matching arithmetic. At last the paper presents the simulation result in the two typical movement patterns.
Identification of the Seaweed Fluorescence Spectroscopy Based on the PCA and ICA-SVM
Authors: Lv Jiang Tao , Gu Qiong Chan
Published: June 2012

Current years, the offing red tide of china is recurrent mutation, the direct and fast method which can analyze the amount and the kind of the phytoplankton is needed imperious. Three-dimensional fluorescence spectrum can show entire fingerprint information of fluorescent light that in the range of excitation and emission wavelength, but the dimension of three-dimensional fluorescence spectrum is higher, the characteristic spectrum of different kinds pelagic plant are multifarious, it is complex identification. In this paper, the principal component analysis (PCA) is used to reduce the dimensions of the spectroscopy. The independent component analysis (ICA) is used to do the matrix decomposition from the perspective of independence to extract the main feature of the spectroscopy data processed by the PCA. The support vector machine (SVM) is used to assort the main characteristic root books which are abstracted by the ICA. The correct laboratory sorting of seaweed is realized. Experimental result indicate, this method can identify the chief component of admixture seaweed, the high dimensional spectroscopy information of seaweed is proceed effective feature extraction, the sorting speed is increase greatly, the discrimination of sorting is reach 92% percent.
Preparation of General Purpose Carbon Fibers by the Two-Step Method from Ethylene Tar Pitch
Authors: Yang Zhi Wu , Zheng Jia Ming , Chen Ming Ming , Wang Cheng Yang
Published: June 2012

In this paper, besides the single method of air blowing and thermal condensation, a new two-step combining method was taken to modulate the pitch precursor for carbon fibers: the ethylene tar pitch was first air-blown under 280 °C for 10 h, and then thermal-condensed in nitrogen under 380 °C. Then group composition, elemental and thermal analysis, FT-IR, SEM and polarized optical micrographs were used in this paper, and the influence of different methods of modulation on the performance of pitches was discussed. The results revealed that neither in the method of air blowing nor thermal treatment can the pitch with a high softening point and coking value but no mesophase be produced. However, isotropic spinnable pitch with high softening point (286 °C), coking value (80.2%) and superior thermal stabilities can be synthesized in the two-step combining method. Carbon fibers from such pitches had been produced through melt-spinning, stabilization and carbonization, they showed uniform diameters (about 15.5 μm) with smooth and homogeneous surfaces. After stabilization and carbonization, the shrinkage of carbon fibers’ diameter was limited to 6%.
Mining Fuzzy Association Rules in Quantitative Databases
Authors: Bai Yi Ming , Meng Xian Yao , Han Xin Jie
Published: June 2012

In this paper, we introduce a novel technique for mining fuzzy association rules in quantitative databases. Unlike other data mining techniques who can only discover association rules in discrete values, the algorithm reveals the relationships among different quantitative values by traversing through the partition grids and produces the corresponding Fuzzy Association Rules. Fuzzy Association Rules employs linguistic terms to represent the revealed regularities and exceptions in quantitative databases. After the fuzzy rule base is built, we utilize the definition of Support Degree in data mining to reduce the rule number and save the useful rules. Throughout this paper, we will use a set of real data from a wine database to demonstrate the ideas and test the models.
Research and Realization of Streaming Media Video Conferencing System Based on P2P
Authors: Zhang Shuai , Zheng Yan , Chen Xin , Zhang Bao Hua
Published: June 2012

With the development of streaming media technology, its application area enlarges gradually. Using streaming media technology for remote online video conferencing has great practical value. In this paper, streaming video conferencing system based on P2P technology is researched and realized.
A Novel Algorithm for Key Frames Selection
Authors: Yang Chen Kuei , Cheng Shyi Chyi
Published: June 2012

The main objective of this study framework is to help the user to management the interesting video images from the huge storage device. The study can be divided into three main steps is listing as follows: shot boundary detection, key frame selection and evaluation method are designed by analyzing the video content. In this paper we proposed a novel algorithm for shot boundary detection. First, transform the RGB color model into LUV color model according our experimental results. The useful features of each frame are extracted from sequence images by the automatically computation of their color moment-preserving and matching 64-predefined bit planes in order to detect the shot boundary. The excellent shot boundary detection will result in the good key frames selection. Second, the key frame selection is proceed by applying the geometric invariant moments which successful be used in target tracing, pattern recognition, and facial recognition. In our experiments we used five test sequences that belong to five different program categories: movies, advertising, sport game, news, and commercial documentary. The experimental results showed that our method is feasible, effective, and is better than the former approaches.
A Fast Algorithm for Lip Contour and Feature Extraction
Authors: Jia Xi Bin , Zhang Ke Wei
Published: June 2012

The paper proposes a fast method that uses the lips color information in the Lab color space and the pre-knowledge of geometric characteristics around lip areas to extract the lip contour and visual speech features from color images or video sequences with front talking faces. In our method, the Adaboost algorithm is utilized to realize the face detection. Then, the mouth area is segmented based on the face shape attribution. According to the relative position of the trough and crest of the histogram, we can get an adaptive threshold. The A-component in the Lab color space was used to extract the outer lip and the L-component is used to extract the inner lip. From the contour image, we obtain the feature by searching twice the points of the contour. The experimental results show that obtained visual feature values in our approach are approximate to that with AAM algorithm but with less computation complexity.
Airspace Congestion Prediction Based on Evidence Theory
Authors: Wang Chao , He Miao
Published: June 2012

In order to decrease the flight delays caused by the airspace congestion, and ensure the flight safety, airspace congestion prediction technology based on evidence theory is researched and the airspace congestion prediction steps are given. An example is carried out. The result indicates that prediction technology is feasible.
The Control of Attached Acid Groups on Sulfonated Polystyrene Nanospheres through the Design of Material Structure
Authors: Tian Xiao Ning , Jiang Zhong Qing , Zhang Li Li , Luo Li Juan , Zhao X.S.
Published: June 2012

Linearlinking polystyrene nanospheres (LPSs) with uniform size dispersion were synthesized by the emulsifier-free emulsion polymerization method. And with the adding of divinylbenzene (DVB) crosslinking polystyrene nanospheres (CPSs) was also prepared. It was found out that the partical size of prepared nanospheres changed with the continuous increment of added DVB. The sulfonation of resultant polystyrene nanospheres yielded solids with sulfonic acid groups. The relationship between nanospheres material structure and attached acid groups was investigated in detail. It was observed that the amount of added DVB is the main factor which can affect the amount and thermal stability of attached sulfonic acid groups. The catalytic performance of resultant solid acid catalysts was evaluated through the esterification reaction of methanol with acetic acid. Moreover, the prepared sulfonated polystyrene nanospheres show higher acetic acid conversion than the commercial one, therefore the sulfonated nanospheres could be an excellent potential replacement for liquid acid catalyst.
Synthesis of Gold Nanoparticles by Methanobactin
Authors: Zhang Tie Nan , Xin Jia Ying , Zhang Xiu Feng , Zhang Ying Xin , Xia Chun Gu
Published: June 2012

Methanotrophic physiology is strongly affected by the amount of bioavailable copper, which regulates the enzymes used by methanotrophs to oxidize methane. Methanobactin is a small peptide secreted by methanotrophic bacteria that binds copper outside of the bacterial cell. In this study, gold nanoparticles were firstly synthesized with citrate acid, followed by addition of methanobactin. Then as CuSO4was continuously added to the solution, we found a red shift in the Uv-vis absorption spectra. Meanwhile, for the mixture of methanobactin, 1,4-resorcinol and chlorauric acid, we also found an absorption at 540nm after 1h in dark. We presume that methanobactin has the bioactivity of protecting gold nanoparticles as well as delivering electron for the catalytic synthesis of gold nanoparticles. These molecules then go on to form gold nanoparticles. Gold nanoparticles can be seen with the naked eye, as they turn a gold solution from yellow/gold to a deep cranberry/red. The nanoparticles also display a characteristic absorbance of approximately 540 nm on absorption spectra.
Investigation on β-Polypropylene/Talc Composites
Authors: Duan Jia Wei , Dou Qiang
Published: June 2012

In this study polypropylene (PP) composites containing β-nucleating agent (NT-C) and talc filler were prepared by melt compounding. The melting and crystallization behavior, morphology and mechanical properties of the composites were studied by means of differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), polarized light microscopy (PLM) and mechanical tests. The results indicate that talc suppresses the formation of β phase, but promotes the formation of α phase. The Izod notched impact strength and tensile strength of β-PP/talc composites are superior to those of PP/talc composites, indicating an outstanding balance of stiffness and toughness of β-PP/talc composites.
Research on Plastic Wood Composite Materials Production Technology
Authors: Huang Fang
Published: June 2012

Wood flour is inexpensive, and can be used as a reinforcing agent to improve the mechanical properties of high density polyethylene, reduce cost. Wood fiber as a renewable natural material, biodegradation, therefore, high filling wood powder high density polyethylene composite material with certain environmental compatibility, at the same time, high density polyethylene can be a source of waste recycling materials, therefore plastic-wood composite material is a kind of can reduce the "white pollution" environmental material. [1-5]
Simulation Analysis of Penetration Performance of Tungsten Alloy and Tungsten Carbide Rod Penetrator
Authors: Wu Qun Biao , Shen Pei Hui , Liu Rong Zhong
Published: June 2012

In penetration mechanics, the material parameters of the rod penetrator are very important factors which influence the effect of penetration. The effect of each parameter changes with the impact velocity. Simulation analysis of two models filled with tungsten alloy and tungsten carbide separately penetrating semi-infinite armor steel target at medium to high velocities has been made to quantitatively analyze the key roles that the density and hardness play. Simulation results indicate that a dividing line of velocity exists between the penetrations of two materials. Above the line, tungsten alloy rod with greater density has a distinct advantage with increasing velocity. Below the line, the advantage of tungsten carbide rod with greater hardness is significantly more with the decreasing velocity. In the process of penetration, penetration velocity decreases rapidly from a high value to zero. The simulation result provides quantitative analytic basis which can be used to prove that the penetrator composed of two different materials is better than the one composed of homogenous material.
Anti-Friction Effect of Ball-Milled and Subsequently Annealed Expanded Graphite/Iron Powder Mixture
Authors: Li Yu Shan
Published: June 2012

A mixture of expanded graphite (EG) and iron powders was ball-milled in a high-energy mill under an air atmosphere and subsequently annealed under a vacuum atmosphere. The products were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), and their anti-friction effect used as lubricating additive was investigated by using a tribo-tester. On the surface of the products, graphite encapsulated iron nanoparticles with a size range of 50-150 nm were formed. Compared with only milled EG/Fe powders, the products exhibit a higher crystallinity of graphite and iron. The products have a marked anti-friction effect, and this effect is better than that of the only milled EG/Fe powders.
The Identification of the 3-D Fluorescence Spectroscopy Recognition of the Mineral Oil Based on the ICA and the Wavelet Neural Network
Authors: Song Ai Juan , Gu Qiong Chan
Published: June 2012

Different kinds of three-dimensional fluorescence spectra of oils have a large degree of overlap. The tradition based on the apparent characteristics of statistical features can only reflect the general characteristics of three-dimensional fluorescence spectra of simple components, or a single fluorescence peak sample differential case is practical, to complex water environment pollution in mineral oil identification has great limitations. The paper use independent component analysis(ICA) algorithm for mineral oil spectral compression dimensionality reduction, feature extraction, extraction of more deep, more elaborate characteristic parameters, and the concentration of information together with the physical significance of the oil pollution of three-dimensional fluorescence spectra characteristic sequence or vector. The mapping relation was obtained by the WNN between the singular value eigenvector and the species of the mineral oil. The WNN realized the recognition of the different kinds of mineral oil. The experiment result indicates that the right of the distinguish rate is 90%.
Research of Laser Shock Processing
Authors: Li Shuang Mei
Published: June 2012

This paper analyzes the actual requirements for the laser in laser shock processing. A laser used in laser shock processing for special experiment is designed and main performance of the laser has been tested.
The Artificial Intelligence in the Ammunition Film in the Research on the Application of Drying Stove
Authors: Gu Zhi Guo , Zhang Huai Zhi , Du Run Sheng , Liu Peng An , Li Hui Ming , Cao Hong An , Huang Ying Ke , Xie Jun Lei , Wang Jie Ya
Published: June 2012

For ammunition film drying stove temperature control is not ideal actual situation, in order to further improve the precision of temperature control, we according to the artificial intelligent adjusting instruments the characteristics of system improvement, from the structure, algorithm, parameter setting and actual inspection, etc are discussed in detail. The results show that the fuzzy PID with artificial intelligence technology of ammunition film drying stove temperature in the improvement of the system is feasible.
Scheduling a Continuous Casting Batch Machine with Flexible Jobs to Minimize Setup Costs
Authors: Dong Hong Yu
Published: June 2012

The continuous casting batch machine scheduling with flexible jobs is proposed based on its character. The original problem is firstly preprocessed based on rule, and then the optimization model with minimizing setup costs is proposed. To improve the efficiency of local search, the Particle Swarm Optimization (PSO) is introduced, and then the PSO and heuristic strategy are embedded into the Iterated Local Search (ILS) to solve the problem. The solution space is divided into many subspaces based on the charge information, and then the subspaces are integrated after local search. The maximum number of iteration is introduced as stopping condition. Then, the proposed algorithm and ILS are compared, and the changing of learning factors, number of generation, and the maximum number of iteration are also tested respectively. Finally, the simulation results show that the proposed algorithm can solve the problem efficiently.
Improving Compression after Impact of T800H/5228A Composite Laminates through Interlaminate Toughening
Authors: Liu Li Peng , An Xue Feng , Zhang Ming , Yi Xiao Su
Published: June 2012

As-received plastic PAEK membranes were inserted into each layer of T800H/5228A prepreg for improving composite tougheness, generally characterized by compression after impact.The microstructure revealed that a reaction-induced phase decomposition and inversion happened in the interlaminar region, as what does in PAEK/epoxy compound beyond 35phr content.Compression after impact and GIC,were doubled without biggish loss of other main in-plane mechanical properties.
High-Power LED Constant Current Dimming Circuit Design
Authors: Sun Jun , Xiang Bo , Zhou Ping , Wang Xiu Ying
Published: June 2012

In this paper, an adjustable constant current circuit is designed by combining the digital potentiometer X9312 and the microcontroller 89C52. We first introduce the overall component and structure of the constant current dimming circuit which needs to be designed. Then, the hardware circuit design and the software design are discussed in detail. Based on the proposed design method, the manufacturing and the testing of the prototype machine are taken at last. The testing results are satisfactory, and meet the design requirement. The proposed design approach has won award in 2009 National Undergraduate Electronic Design Contest.
Eddy Current Testing Sensor Design and Comparative Experiment Study Based on Amorphous Alloy
Authors: Yang Lin Yu , Yu Run Qiao , Qiu Yu Lan
Published: June 2012

After comparing the principle features of MnZn ferrite material of high permeability and amorphous alloy of FeCuNbSiB, this paper produced an improved solution to sensor performance by applying highly magnetic non-brilliant alloy of iron base to the testing windings of eddy current testing sensors and designed the two-dimensional decomposition testing circuit in terms of sensor testing signal. It ended with a comparison between new sensors and traditional ferrite winding sensors in terms of sensibility and linearity. The experiment results showed that the new eddy current sensors have much better sensibility and linearity compared with their traditional peers.
Relationship between F Value and Slag Entrapment in Mold with Electromagnetic Brake
Authors: Zhang Zhen Qiang , Lei Zuo Sheng , Yu Zhan , Ren Zhong Ming , Deng Kang
Published: June 2012

An experimental device is designed to control slag entrapment of molten steel with ElectroMagnetic Brake(EMBR). Mercury was taken to simulate the liquid steel flow in the mold. The factors which affect slag entrapment with EMBR are studied, such as position of magnets, distribution of magnetic flux density and submerged depth of Nozzle. Experimental results show that the posibility of power entrapped by liquid steel was smallest as magnetic flux density B=0.3T, meanwhile, it was found that F value decreases with increasing immersion depth. Indeed, the occurrence probability of the slag entrapment decreases while d=45 mm (d is distance from the centre of SEN to the centreline of magnetic core.) instead of d=25 mm. The submerged depth within 30~50 mm are suitable to the level fluctuation in EMBR conditions in this experiment.
Ultra-Low Power Static Logic Circuits Design in Subthreshold Region
Authors: Li Jie , Zhang Zhuang , Shan Wei Wei
Published: June 2012

As semiconductor technology develops toward very deep submicron or even nanometer, power consumption per unit area increases dramatically. Scaling supply voltage into the subthreshold region provides significant energy reduction in logic circuits. However, low voltage and varies of environmental factors make it a challenge to design subthreshold circuit. This paper presents a method to modify standard cells to function well in subthreshold region. The main factors including process, voltage and temperature variables, noise and mismatch, which have more influence on the performance in the sub-threshold region than the strong inversion region. Typical static logics in the standard library TSMC65nm are analyzed by Monte Carlo analysis method when working in sub-threshold region, to find that logical failures occur to NAND VOL and NOR VOH before modified the sizes. After NAND's size increasing 85% and NOR's 370%, the failure has been eliminated and a good noise margin has been achieved.
A High-Performance Filter for Image Denoising Based on Local Features
Authors: Zhao Xue Qing , Wang Xiao Ming , Liu Qiang
Published: June 2012

A high-performance filter (HPF) is proposed for removing noises in corrupted images, where the local features are adopted to preserve the image local structures. Firstly, the Chebyshev’s theorem and fuzzy mean process are used to adaptively estimate the detection parameters. Secondly, the local statistics theory is used to estimate noisy pixels, which is based on Radon transform. Thirdly, the PSNR is used as the evaluation metric to show the advantage of the HPF, which is compared with latest filters, such as SBF, HPFSM and the classical filter SMF. Extensive experimental results show that the HPF achieves better performances in removing any kinds of noises (impulse, Gaussian, uniform and mixed), the computational complexity of the HPF is 5 to 11 times lower than the other filters.
A Rapid Computation Method for Kalman Filtering in Vehicular SINS/GPS Integrated System
Authors: Zhu Qi Ju , Yan Gong Min , Yang Peng Xiang , Qin Yong Yuan
Published: June 2012

A new rapid computation method for Kalman filtering is proposed. In this method, the prediction of state covariance matrix is expanded directly rather than computing by a looping program. Sequential filtering for measurement update is also applied. Furthermore, the subsidiary elements in system matrix are set to zero and a reduced-dimensions sub-optimal Kalman filter is presented. The proposed method greatly decreases computational burden and it is only 6.59% of the classic method. In the end, a vehicular test is carried out to prove the feasibility of the filtering.
Research on Zero Point Detection Technology of Coriolis Mass Flowmeter Based on Wavelet Transform
Authors: Ren Jian Xin , Pei Yan , Zhang Peng
Published: June 2012

Accurate detection of zero point is significant for improving working performance and measurement accuracy of Coriolis Mass Flowmeter. In this paper, wavelet transform technology is adopted to form the pre-filter to suppress noise jamming, to get sensor’s zero point precisely in working condition. Implementation scheme of software and hardware is given, correlative simulation and field experiment are carried out to verify the feasibility of the method.
The Design and Implementation of Telemetry Acquisition System Based on FPGA
Authors: Liu Su Hua , Shen San Min , Xiong Ji Jun , Guo Hu Feng
Published: June 2012

In order to meet the needs of telemetry test system parameters testing, we propose FPGA based on telemetry data acquisition system's overall design, and describe the methods and processes of the collection of analog signal and the reception of digital signal in detail. According to the sampling rate of the slow-changing and the rapid-changing, the frame structure is designed. Under the control of PC, data collection and coding are achived by FPGA, and real-time monitoring of data is achived through testing platform and data storage is achived by data recorders to monitor and implement, and modelsim software simulates the timing of the program. After the application of the practice, the stability and reliability of the collection system get confirmed.
Research on Two-Electrodes’ Magnetic Field in Sea
Authors: Liu Zhong Le , Zhang Yi Chao , Zhou Hao
Published: June 2012

Based on the steady current field model of the point electrode in the three-layers media (air-seawater-seabed), the calculation model of the magnetic field generated by the current in the seawater or air was derived and validated, and the model was spread out to the distributing of magnetic field in the insulation semi-space of the n-layers media. Any point value of the magnetic field in the seawater and air can be calculated based on formulas. The results of the calculation indicated that the magnetic field generated by the point electrode in the seawater and air has obvious distribution character.
Performance Analysis of Seawater Cooling Tower
Authors: Qi Xiao Ni
Published: June 2012

Due to salt deposition on the packing and subsequent airflow block, thermal performance of the tower declines after a period of time. Eliminating the fill makes the tower fully empty which is of far-reaching significance in circulating seawater with high temperature, high turbidity. Application of PCTs to industry is not practical due to salt deposition on the packing and subsequent blockage. Analysis of seawater characteristics main includes temperature, salinity, density, specific heat and other properties, which is of great significance in the seawater cooling performance. The results provide necessary theoretical bases for the extensive application of seawater cycling and cooling technology, and at the same time lay foundation for the design of seawater cooling tower.
The Standard and Realization of MMI Based on EN
Authors: Ye Yu Huang , Huang Xiao Ping
Published: June 2012

During these years, as the digital TV (DTV) broadcasting technique is developed, the number of set-top box (STB) consumers is increasing quickly, and they spend more money on pay-TV. Conditional Access System is the key technology to realize pay-TV and interact-TV. This paper introduces Man-Machine Interface (MMI) standard of En50221[1] for conditional access system and it’s a method of realization on STB of DTV.
Effects of GIC in Power System and Control Measures
Authors: Ma You Jie , Wu Dong Fang , Zhou Xue Song
Published: June 2012

The geomagnetic storm which is caused by the sun's activity is a global natural disaster. For the transformer neutral line connects to the earth directly, the geomagnetic storms can induce GIC in the loop formed by the earth and the transmission lines with long distance. The GIC has very big effect on the safe operation of electric power system when it flows in power grid. It includes the main damages on power system equipment caused by the GIC, the introduction of the GIC generation principle, main features, analysis algorithm and some control measures in this paper. Finally, point out that the GIC of the long distance transmission system and large-scale power grid should be paid more attention.
The Application of Flash Memory in Computerized Jacquard Controller
Authors: Zhang Cheng Jun , Zuo Xiao Yan , Zhang Chi , Wu Xiao Guang
Published: June 2012

Through analyzing the pattern data of computerized jacquard knitting wrap machine, comparing the current storages structure and type, this paper introduces a method for Flash file structure of jacquard data. The method takes advantage of ARM chip to achieve the operations for access and modification of Flash, designing a management procedures of jacquard data access from the perspective of increasing the Flash life. The management procedures not only complete read and write operations, but also meet the requirement of jacquard high-speed data transfer.
Flexible Characteristics of Novel OLED Materials
Authors: Lee Kun Yi , Lee Cheng Che , Lin Kuen Cherng , Whang Jong Woei , Chu Lin Ling , Lee Hsin Che , Lin Yen Juei , Lee Jiun Haw , Chang Chin Yu , Yeh Shu Tang , Lee Wei Yu
Published: June 2012

Based on two novel organic materials coded as EB515 and EB 47 for fabricating a flexible OLED device, we, herewith, propose a noval testing experiment to demonstrate the electrical, optical, and lifespan performances of a flexible OLED by continuously bending it mechanically. The testing model is designed as the following: continuously cyclic bending 5000 times on a flexible OLED. After foregoing test, the findings show that the leakage current increased in the beginning of bending, then decreased; also the luminance of OLED reduced first, then recoverd. We, therefore, conclude that the reduction of leakage current and luminance may stem from the OLED surface microcracks in the process of bending. Also, after further examination to the surface of substrate by lift-offing the organic layer, we found the organic layer has been impaired and damaged, but the ITO layer remained in good condition.
The Research and Realization of the Multi-Target Web Evaluation System for Digitized Industrial Design
Authors: Zhou Xian , Zhao Qing
Published: June 2012

In the background of Digitized Industrial Design drived by web, evaluation Strategic which based on web become an important stage of promoting the design qualities. From the theory of evaluation, the Multi-Target web evaluation system was structrued, which based on ASP technology and fuzzy evaluation theory. This new evaluation strategy will improve the application area of evaluation strategic. Provided a rational, objective method for designers and producers to select, and provided the basis of further research on design theory and practice.
The Application of LabVIEW in Control System Stability Analysis
Authors: Xing Xue Ning
Published: June 2012

The stability of the system is the prior condition for whether the control system can operate normally, in the classical control theory, time domain analyze method, complex domain analyze method and frequency domain analyze method are often used to analyze the performance of the control system. Using LabVIEW to design graphic user interface, input parameters, then the curve can be drawn out immediately and calculate the interrelated parameters, which plays an important role in analyzing the stability of the system.
Application of Secondary Development of AutoCAD in Railway Signal Engineering Design
Authors: Zheng Jun Feng , Ni Shao Quan , Zou Ben Zhen , Liu Hai Tao
Published: June 2012

This paper studies a new approach to developing AutoCAD in MFC with ActiveX Automation technology. It successfully solved the problem that development visions of Object ARX are not correspondent. It analyzed the application of dispatch interface in IDispatch technology and VARIANT type data in depth. In addition, it gave out practical cases in which this approach is used and particularly discussed the method for using blocks and searching through diagram objects. This designing realized the automatic designing of engineering drawing and automatic extracting of information.
Multi-Channel Voltage Pulse Testing Based on Lab Windows/CVI
Authors: Zhao Yi , Guo Hui Bing
Published: June 2012

The paper introduces the principle of multi-channel voltage pulse testing scheme based on Lab Windows/CVI. 32 channels of a control system are synchronized acquired through a PXI module NI 6259 and displayed on the virtual instrument interface developed with CVI. The paper illustrates the process of synchronized-selecting more detail in figures and presents a means of how to transform a datum matrix come from NI 6259 to another one which can be calculated and programmed conveniently.
Image Texture Classification Based on LS-SVM
Authors: Zhao Yan Ling , Zheng Xiao Shi , Liu Guang Qi , Li Na
Published: June 2012

LS-SVM (Least Squares Support Vector Machine) is simple and has a good ability of non-linear regression. As inputs of LS-SVM, DC-Energy-Ratio and Deviation of image samples are extracted first. Output of LS-SVM is the current texture classification. The results show that LS-SVM classifies images accurately by training the proposed two features.
Application of PLC in the CNC Machine Tool Control System
Authors: Zhou Quan
Published: June 2012

In the CNC machine tool control systems PLC plays an important role,this article describes the classification of the PLC CNC machine tools,the role of information exchange and application of methods, that the PLC has become indispensable for high performance CNC control device.
The Control for Predator-Prey Model with Stage-Structured Predator
Authors: Zheng Jia , Zeng Zhi Jun
Published: June 2012

In this paper, the control for predator-prey model with stage-structured predator is studied. The controllers and the parameter estimation update laws are established explicitly which make the system under consideration stable.
FDTD Numerical Analysis of Transmission Enhancement on Two-Dimensional Hole Array
Authors: Yin Jie , Yang Shu , Pan Chong
Published: June 2012

Numerical simulation about transmission enhancement phenomenon on metal film hole array has been finished in the paper by East FDTD commercial software. In some wavelengths, relative transmission rate is more than 1 and we also study that the thickness of metal plate, the size of the hole and period on influence of the transmission rate. Transmission enhancement peak lowers with the increasing of silver film thickness, enlarger along with the increasing of the aperture, And when period of hole gets larger, transmission peak will shift.
Numerical Simulation of Safe Strip Mining under Thick Unconsolidated Layers
Authors: Wei Xu , Qing Li Yu
Published: June 2012

It is found in the mine rock mass moving observation that the ground movement characteristics of mining under thick unconsolidated layers are significantly different from the thin surface mining, such as surface cracks developing into a ditch-like shape, and large spread range of subsidence[1-2]. According to incomplete statistics, the coal below constructed projects reached up to 137.64 billion tons in China [3], and strip mining as one of the important measures in “green mining technology” system has become an effective technical way [4]. This paper combined double-layer media model theory of mining under thick unconsolidated layers and the specific geological conditions, established numerical model of strip mining under thick unconsolidated layers. By employing finite element simulation software ANSYS10.0, the author of this paper studied the changes of stress and displacement in overburden rocks，learned the general laws of subsidence in surface and overburden rocks when mining under thick unconsolidated layers, and analyzed the influence that the existence of deep clay layer on development of caving fracture zone and water flowing fractured zone. The simulation results are basically consistent with experimental results, and provided theoretical guidance for the safety production practices.
Research on Integration Technology of Large-Scale Public Building Energy Detection System Based on OPC
Authors: Wang Chang Tao , Zhou Jing Hai , Han Zhong Hua
Published: June 2012

As developing and integrating energy consumption detection system become more and more difficult, OPC technology is used to simplify the system. The integration of system can be improved largely and the development work can be decreased through OPC standard interface. Firstly, this paper introduces relative knowledge about OPC technology, and then realizes hardware and software development of energy consumption detection system in Shenyang large-scale public buildings. The result indicates that OPC can simplify system greatly and energy consumption data can be detected at real-time.
Design and Implementation of Derivation Cryptographic Algorithms in Embedded Contactless IC Card System
Authors: Fang Xiang Qun , Ge Hai Bo , Li Ping
Published: June 2012

The paper studied the security measures of contactless IC card system. Derivation cryptographic algorithms were used in the embedded IC card system to generate multi-application cipher key, providing an effective solution for the applications with high security requirements.
Study of Solving Crossing Origin-Destination Matrix Based on Entropy Maximizing Model
Authors: Fu Guo Jiang
Published: June 2012

The maximum-entropy model is one of important methods in estimating traffic origin-destination matrix from observed traffic link flows, and it is a nonlinear integer programming model. To find the best solution, traditionally it was transformed to solve nonlinear equations by the introduction of Lagrange multiplier and Newton’s method is adopted to solve the nonlinear equations. In this paper, a entropy maximizing model to estimate the crossing origin-destination flow matrix from in-out flows is given, a genetic algorithm is proposed to solve the model and the introduction of Lagrange multiplier is avoid. A practical example showed the validity of the genetic algorithm.
Application of UML in Modeling Complex Logistic Support Simulation System on Warship Spare Part
Authors: Peng Ying Wu , Li Qing Min , Wang Rui , Mao De Jun , Xiao Ding
Published: June 2012

Spare part is important source in the warship maintenance support process. The spare part logistic support is a interactional course supporting the complex and dynamic warship maintenance by organizing different echelon logistic network including maintenance units, storehouse, transport unit, and so on. Based on the analysis of complex logistic support simulation system on warship spare part, the UML model of system design was built up to provide a common modeling method for the development of simulation system, which includes the use-case diagram, the entity collaboration diagram, class diagram, state diagram and interaction sequence diagram. According to the designed UML models, it has better effect on warship maintenance that the logistic support simulation system on anti-mine warship spare part was designed and realized based on HLA technique..