bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Evaluation of Cost-Effectiveness of Universities
Authors: Wang Cheng
Published: September 2013

The cost-effectiveness of universities is relative to the factors of economic benefits and social benefits. Considering these factors, an evaluation model for evaluating the cost-effectiveness of universities is established based on the Data Envelopment Analysis (DEA) in this paper. And this model is applied in the evaluation of cost-effectiveness of Huanggang Normal University combined with this universitys educational reality, and a better evaluation results is got. The study in this paper provides a theoretical basis and a new method for evaluating the cost-effectiveness of universities.
Study on Manufacturing Practice Platform Construction of Mechanical Industrial Design
Authors: Jiang Xiao Wei , Du Qiu Lei
Published: September 2013

In view of that manufacturing practice is indispensable practical links in the mechanical industrial design, the author analyzes the current situation of manufacturing practice in the mechanical industrial design and the existing problem in manufacturing practice system. And then The author puts forward a series of methods and concrete measures about manufacturing practice platform construction of mechanical industrial design , including constructing the new mode of manufacturing practice of mechanical industrial design major, constructing the stable base of manufacturing practice, improving the understanding to manufacturing practice and knowing the major role and strengthening the construction of instructors troops of manufacturing practice, Which will certainly have a profound theoretical and practical guiding significance. On this foundation, the study summary on manufacturing practice platform construction of mechanical industrial design is done.
Study on the Structure and Properties of the Low Melting Point of Nylon 6 Modified by Organic Montmorillonite
Authors: Zhang Min , Lu Sheng Jun , Yu Jie , Xu En Hui , He Min , Liu Dian Xin
Published: September 2013

The Lower-melting point polyamide-6 (LPA6),with the melting point of 198°C,were a produced in a corotating twin screw extruder. The low melting point PA6/Organic montmorillonite (OMMT) composites were obtained by the method of melt extrusion.The effect of the content of OMMT on melting, morphology, crystallization behavior,mechanical properties of the composites was investigated by TEM, DSC, XRD. This work deals with combination of both components, which are the structure-property relationship of polymer/layered silicate nanocomposites, and the effects of complexation reaction on the montmorillonite dispersion in the matrix. Results showed that the complexation reaction have little effects on the exfoliation and dispersion of OMMT, and completely exfoliated with the content of OMMT was 5wt%.But it have significantly effects on the crystallization behavior of nylon 6,lead to the decraresd of the crystallinity. It was demonstrated that OMMT has a higher exfoliation degree lead to a balanced and enhanced mechanical behaviour.
Preparation of Magnetic Polymer ICF Pellet by the Electroless Plating
Authors: Cui Shao Bo , He Feng Wei
Published: September 2013

The pretreating procedures on the inertial confinement fusion (ICF) pellet and the preparing procedures of th bath of electroless Ni-P plating were described in detail. The effects of the pH value of the bath on the coating quality, of the plating temperature on the yield of the coated microsperes and the plating rate, and of the plating time and the content of the complexing agent on the yield of the coated microsperes were investigated. The morphologies of the coating of the microsperes were evaluated by Olympus-BX51 optical microscopy(OM) and the coating thicknesses were measured by Scanning Electron Microscopy (SEM).
The Analysis on Composition and Structure of the Eri-Silk
Authors: Wang Wen Zhong , Zhao Lei , Fan Li Shan
Published: September 2013

The eri-silk was degummed by Alkaline protease,the chemical composition of the eri-silk was analyzed and the internal structure of the retting eri-silk was analyzed by infrared spectral, also the vertical form of the was tested by electron microscopy and using thermal analysis to study the thermal properties of the eri-silk. The results showed that the highest content in the eri-silk was alanine, followed by acetic acid; The heat resistance of the eri-silk was worse than the soybean protein fiber and wool, the the surface of the degumming eri-silk was smooth, there was obvious dents between two silk fibroin; the structure of the eri-silk fibroin contain α-helix and β-folding structure which is the most main structure, there is distinguishing peak characteristics of AmideI at wave 1661.
The Spectral Properties and Thermal Stability of
AlCr-AlCrON
Solar Selective Absorber Coating
Authors: Li Ya Nan , Liu Xiang Rong , Cui Yin Fang , Liu Jia Qi , Xie Guang Ming , Wang Cong
Published: September 2013

Spectrally selective AlCr-AlCrON cermet solar absorber coating has been deposited on Cu substrate experimentally by reactive DC magnetron sputtering and heat-treated in air at 300°C for 2h. The spectral properties and thermal stability of the as-synthesized AlCr-AlCrON coatings were characterized. The solar absorptance and thermal emittance of the as-synthesized AlCr-AlCrON coating are 0.926 and 0.065, respectively. In addition, after heat treatment at 300 ° C for 500 h in air, the spectral properties of the as-synthesized AlCr-AlCrON coating is virtually unchanged. The results indicate that the as-synthesized AlCr-AlCrON coating has good spectral properties and thermal stability, which will be a good selective absorbing coating for mid-temperature solar vacuum collector tubes.
Atmospheric Pressure Non-Equilibrium Plasma Deposition with Retention of Functional Group
Authors: Yan Jun , Kondo Yuki , Qian Xiao Yi , Fei Xiao Meng , Hosoi Katsuhiko , Mori Tamio , Kuroda Shinichi
Published: September 2013

A non-equilibrium atmospheric pressure plasma was applied for the polymerization of the methacrylic monomers such as (2-hydroxyethyl methacrylate (HEMA), methacrylic acid (MAA) and butyl methacrylate (BMA)). These monomers were successfully polymerized with retaining the functional groups of ester or acid. The polymerization mechanism was discussed on the basis of the optical emission spectroscopy (OES) of the plasma. It was strongly suggested that the functional groups could be retained in the polymerization proceeds when the HOMO-LUMO gap of the monomer is close to the energy of Ar metastable atom, which initiates the polymerization.
Effect of Liquefying Agents Mixed with Lower Alcohols and Reaction Temperature on the Microwave Driven Liquefaction of Wood
Authors: Wang Zhe , An Zhen
Published: September 2013

Southern pine (Pinus sp.) is liquefied by microwave heating and PEG/lower alcohols mixtures in the presence of phosphoric acid as the catalyst at 125°C or 150°C. The reaction time is of 15 min, and the liquefaction solvent to wood ratio is of 2:1. The different reaction temperatures used in the present paper did not have obvious influences on liquefaction yield, but have important effects on hydroxyl value. The mixture of lower alcohols such as ethanol and glycerine with PEG had a strong effect on the liquefaction process. The highest liquefaction yield was obtained in liquefying solvents mixed 30% of ethanol and 10% of glycerine with 60% of PEG at 150°C, and the maximum hydroxyl value was gained by PEG (60%) and ethanol (40%) at 150 °C.
Numerical Simulation of the Effect of Cathode Materials on the Displacement in a 350 KA Aluminum Reduction Cell
Authors: Wang Wei , Wang Shu Chao , Bao Pan Fei
Published: September 2013

A three dimensional mathematical model was developed to calculate the displacement of a 350 kA cell with graphitized cathode during preheat and early operation, and the calculated results have been compared and discussed with the measurements. The displacement has been studied for three typical kinds of aluminum reduction cells (semi-graphitic, graphitic and graphitized) after 30 days start-up. First, the sodium concentration distribution after 30 days start-up in cathode carbon blocks was calculated by one FE model of a cathode block. And numerical simulation was utilized to study the displacement fields of the above three typical kinds of the cell, which took the stress caused by chemistry and temperature gradient into account. The results indicate that the value of the cell displacement decreases with time during 30 days start-up and reaches a constant value.
An Evaluation on Impact Performance of Light-Weight Composite Honeycomb Sandwich Panels
Authors: Ren Jin , Iwakawa Yutaka , He Jian Mei
Published: September 2013

A honeycomb core sandwich panel is superior in impact absorption under whole surface compression, because of the buffer effect of core. However impact properties of honeycomb sandwich panels under local compressions such as drop weight impact are affected by the plates as the face sheets in addition to the core layers. This research describes the drop weight impact properties of honeycomb sandwich panels which consist of various aluminum-alloy honeycomb cores and CFRP composite laminate faces through the spindle falling experiments. In order to confirm the validity of the experiments convictively, analytical approaches based on 3D modeling and ANSYS LS-DYNA software were also carried out. Comparisons of the experimental and analytical results are reported in this study.
Temperature Distribution Analysis of TIG Welding Process of Thin-Walled Stainless Steel and Red Copper
Authors: Liu Han Wu , Huang Lei , Yu Wen Zai , Ma Rui Bin
Published: September 2013

The connecting pipe in solar hot water system is made by TIG welding of thin-walled stainless steel and copper. As the welding of stainless steel and copper belongs to dissimilar metal welding and their physical properties are very different, thus the welding of them is difficult and it is likely to cause a variety of defects in the welding process. In this paper, ANSYS software is used to simulate the welding process of stainless steel and copper, and the temperature distributions in the welding process are obtained. The results show that: as the heat transferring of copper is faster than stainless steel, the temperature field distribution of thin-walled stainless steel and copper tubes in the welding process is extremely uneven. As a result, the melting degrees on both sides in the welding seam are inconsistent, which may cause poor forming of weld seam. The results provide references and theoretical basis for the welding technology of dissimilar materials.
Effects of PMDI Treatments on Thermal Properties of Silvergrass Reinforced High Density Polyethylene Composites
Authors: Xue Dong , Yu Wang Wang , Liu Qin , Jing Lu , Liu Xue Jing , Lei Wen
Published: September 2013

In this study, silvergrass (SV) reinforced high density polyethylene (HDPE) composites were prepared. The effects of polymeric methylene diphenyl diisocyanate (PMDI), slivergrass fibers (SV) content on the thermal, crystalline properties of wood plastic composites (WPCs) were investigated. It was found that Compared with the untreated WPCs, the thermal stability of the composites after incorporation of PMDI treated SV fibers was significantly improved. Moreover, the results show that with PMDI treated composites, SV was an effective heterogeneous nucleating agent.
Study on a New Forming Method of the Honeycomb Semi-Cell Structures
Authors: Qin Lei , Zhang Hai Liang , Luo Chang Jie
Published: September 2013

A new forming method of honeycomb semi-cell structures was proposed by analyzing the defects of finished products processed by traditional roll forming method. Using ANSYS/LS-DYNA, a numerical analysis of its forming process was set up. A new forming equipment has been developed to conduct experiments. The results of experimental and numerical analysis show that the new forming method of the honeycomb semi-cell structures is feasible and superior.
Buckling Analysis of Composite Plates in Plate-Cone Reticulated Shell
Authors: Wang Xing , Feng Chao , Chen Nie
Published: September 2013

Plate-cone reticulated shell is a new type of space structures with good mechanical behavior and technical economy. In this paper, local buckling and influence factors of composite plates in plate-cone reticulated shell are analyzed with theory of composite plate and shell through composite structure finite element method, and the mechanical characteristics of composite plate-cone reticulated shell are studied, some important conclusions were obtained, which can provide theoretical foundation for practical design of composite plate-cone reticulated shell and composite plates.
Research on Crack Prevention Method for Long Concrete Foundation Slab of Pumping Station
Authors: Qiang Sheng , Zhang Nan Nan , Wu Chao , He Yong
Published: September 2013

The foundation slab is the key structure of a pumping station. For such a hydraulic structure cracking is not permitted because it will cause heavily seepage and other disaster. Temperature control is an important way to prevent cracking. With the aid of finite element method for temperature field and stress field simulation, research is carried out for a 43.5m long mass concrete foundation slab of a pumping station poured in different seasons. Different measures, such as pipe cooling, surface preservation and pouring temperature control, are tried to control the temperature and stress. This research gets some useful results, and the measures proposed have a significant reference to similar projects.
Research on Application of Buck Converter Based on Data-Driven Model-Free Adaptive Controller
Authors: He Li Hong , Wang Hong Yu , Wang Jin Jin , Wu Jian Hua
Published: September 2013

State feedback exact linearization method in Buck converters have been widely recognized in the domestic, and it achieved a good control effect, but because the method is based on the accurate modeling, so when the model of controlled object is not accurate enough or circuit parameters in the application are changed, state feedback exact linearization method will be difficult to achieve the ideal control effect. In this paper we use the based on data-driven model-free adaptive controller (MFAC) on Buck Converter Applications for the first time. We analyzed the output characteristic of model-free adaptive control and the state feedback when load changes by simulation. Through the experimental platform of practical, we compared MFAC and the state feedback. Results show that, when the circuit parameter varies in a large range, MFAC has better robustness and resistance mismatch capability, high steady accuracy.
Design and Implementation of High-Precision Digital Audio Equalizer Based on FPGA
Authors: Guo Hong , Han Dan Dan , Zhang Hong Guo
Published: September 2013

By adjusting a variety of different frequency signals, equalizer compensates or optimizes system deficiencies, equalizer is used in voice, communication systems, mechanical vibration, fault diagnosis and many other fields. Traditional analog equalizer has low precision, phase nonlinearity and more distortion characteristics. On the basis of this, a new digital equalization algorithm that abandon the traditional single FIR filter implementation method is proposed, frequency division effect is achieved by multiple phase sub-band filter row and multi-channel digital potentiometer, so the cost of digital equalizer design and difficulty of implementation are reduced, and flexibility of digital equalizer settings on the real-time system is improved. In this paper, QuartusII is applied to functional simulation, and downloaded into the FPGA via JTAG interface to verify the correctness of the results.
Study on the DTC Performance Improvement Based on Fuzzy-PI Control
Authors: Yang Li , Qian Kun , Bai Li Li
Published: September 2013

There exists some problems of flux ripple and the switching frequency uncertainty in the traditional Direct Torque Control (DTC) .In order to improve the low-speed performance of the Machine direct torque control system, fuzzy direct torque control system is set up through fuzzy controller to replace Smith flip-flop ,we use fuzzy PI controller take place of traditional PI controller, also we establish the simulation model in the Matlab/Simulink environment, simulation results show that torque ripple and current distortion is decreased by use improved programs, can prove the effectiveness of this strategy.
Design and Research on the Gas Monitoring System Based on LabVIEW
Authors: Fan Kuan Gang , Zhang Xin , Cao Qing Mei , Sheng Ying Fei , Zheng Le Ping
Published: September 2013

Gas detection alarm system plays a more and more important role in People's Daily life and every field. This paper proposes semiconductor gas sensors and SCM as the core, which could achieves the gas concentration monitoring and alarm functions. The gas monitoring system includes host computer that consists of LabVIEW operating interface and slave computer that constructed with AT89C51 microcomputer and MQ-2 gas sensor.It achieves remote monitoring and controlling housing environment in real-time and has a certain practical value in society.
Real-Time Transient Stability Assessment Based on Genetic Algorithm-Extreme Learning Machine
Authors: Wang Bo , Wang Ke , You Da Hai , Chen Wei Hua , Wang Gang
Published: September 2013

In this paper an genetic algorithm-extreme learning machine (ELM) based real-time transient stability assessment method is proposed. This method uses genetic algorithm (GA) to search optimal input weights and hidden biases in the principle of cross validation to establish GA-ELM classifier. In order to do real-time transient stability assessment, generator trajectories of rotor angle, rotor speed, voltage magnitude, electromagnetic power and imbalance power in-and post-disturbance are chosen as original features for the quick access based synchronously sampled values. Simulation results of New-England 39-bus system show that this method has good performance in power system transient stability assessment.
Design of Building Fire Detection System Based on ZigBee
Authors: Du Ning , Wang Yao , Liu Zhi Long
Published: September 2013

Comparing with other fire detection system used in buildings, this paper proposes a design scheme based on ZigBee. ZigBee is a well known wireless communication technology which is wildly used in industrial monitoring. It solves the problem of difficulty to set up the network, high cost and restricted scope in existing cable fire detection monitoring system. This system mainly comprises sensor nodes, middleware and monitoring application. We adopt MESH topology in wireless sensor networks in order to enlarge the monitoring scope. To find the accurate fire position quickly, GPS is adopted in design of sensor node. The Device Cloud is used in middleware and monitoring application to provide open APIs for web, 3G and SMS. Using these technologies the system can provide real-time fire monitoring.
Study on AC Artificially Pollution Flashover Performance of EHV Class Insulator String of 32 Units
Authors: Shi Yan , Chen Yong , Yuan Shang Zun
Published: September 2013

Study on pollution flashover characteristics of EHV system have great reference on engineering.In this paper,the relationship between 50% ac flashover voltage U50 of class insulator string of 32 units and ρESDD, ρNSDD was analyzed based on experimental results. It was shown that the relationship between U50 and ρESDD is the same as the one between U50 and ρNSDD, in which the U50 reduces with the increase of ρESDD by a power function, and the influences of ρESDD and ρNSDD on U50 are mutually independent. By using the least square method, the value of exponent of a and b were determined.
Multi-Body System Dynamics Modeling of a Locomotive for its In-Service Parameter Effects Prediction
Authors: Fan You Quan , Wang Wen Lin
Published: September 2013

To understand the nature of train dynamics to its in-service parameter effects during high operational speeds, multi-body system (MBS) modeling of a Chinese locomotive SS9 was performed. Following comparison of the field test data with the simulation result shows that they agree with each other with considerable accuracy, thus, the MBS model established is validated and being effective for further dynamics studies. For demonstration, a case study was conducted and demonstrates that with the increase of effective series stiffness, the hydraulic yaw damper could dissipate the lateral vibration energy of the front bogie significantly.
Estimate the Performance of Multi-Model Estimation Algorithms
Authors: Yu Yong Yan
Published: September 2013

A robust estimation procedure is necessary to estimate the true model parameters in computer vision. Evaluating the multiple-model in the presence of outliers-robust is a fundamentally different task than the single-model problem.Despite there are many diversity multi-model estimation algorithms, it is difficult to pick an effective and advisably approach.So we present a novel quantitative evaluation of multi-model estimation algorithms, efficiency may be evaluated by either examining the asymptotic efficiency of the algorithms or by running them for a series of data sets of increasing size.Thus we create a specifical testing dataset,and introduce a performance metric, Strongest-Intersection.and using the model-aware correctness criterion. Finally, well show the validity of estimation strategy by the Experimention of line-fitting.
Research and Analysis on Gray Genetic Algorithm
Authors: Wang Zong Jiang
Published: September 2013

In view of the slow match speed of the image, the article proposes gray genetic algorithm (GGA), one kind of new fast image match method, combining the gray connection theory with genetic algorithm. This method, firstly, determines question's parameter space to obtain several of initial points required to be match through coding the parameter space and the string collection initialized. Then the reference sequence and the comparison sequence separately are to be constructed by means of the template chart and the histogram searching for current subgraph's information. Lastly, fitness function are established on these two sequences between pessimistic interrelatedness as reference Based on this, the string collection initialized evolves gradually optimizing region of the search space after many kinds of genetic algorithm's operation, such as the choice operation, the overlapping operation and the variation operation and so on. Finally, it infinitely approaches the optimum matching position. Because the GGA law has fully applied the small sample and genetic algorithm computation parallelism characterized in the gray connection theory, the timeliness of the image match have been distinctly enhanced with certain match precision.
Virtual Design of the Working Device for Flood-Prevention of Cluthing and Casting Excavator
Authors: Wu Lin Feng , Sun Guo Hua , Guo Hua Yi
Published: September 2013

With the development of governing the Yellow River by the technology,it is inevitable to research the construction equipment to adapt to flood-prevention work. The cluthing and casting excavator for flood-prevention is produced under such kind of background. This equipment based on the working device of backhoe track hydraulic excavator was improved, the computer technology is introduced in the design of working device which can be for three-dimensional modeling,assembly and motion simulation analysis. The virtual design by Pro/E for the structural and motion of produces can short the design and manufacture time and cut down the cost, thus it can save the massive funds.The completive power of society is strengthen.
Semantic Labeling of Chinese Special Sentence Patterns Based on Automation Technology
Authors: Chen Bo , Lv Chen , Ji Dong Hong
Published: September 2013

Parsing Chinese is a key issue in NLP. Many controversies arise from Chinese special sentence patterns. This paper puts forward a novel model Feature Structure theory to resolve the semantic labeling of Chinese special sentence patterns. We analyze the difficulties in annotating these sentences, and compare Feature Structure with dependency structure. Feature Structure represents more semantic information and more semantic relations. Feature Graph is a recursive undirected graph, allows nesting and multiple correlations.
A New Improved Adaptive Hybrid Particle Swarm Optimization Algorithm
Authors: Tian Xiang , Gao Yue Lin
Published: September 2013

This paper introduces the principles and characteristics of Particle Swarm Optimization algorithm, and aims at the shortcoming of PSO algorithm, which is easily plunging into the local minimum, then we proposes a new improved adaptive hybrid particle swarm optimization algorithm. It adopts dynamically changing inertia weight and variable learning factors, which is based on the mechanism of natural selection. The numerical results of classical functions illustrate that this hybrid algorithm improves global searching ability and the success rate.
Strapdown Mirror Control Technology
Authors: Wang Sheng , Zeng Xiang Hong
Published: September 2013

This paper has described the status and role of the strapdown mirror control technology. It has analyzed the emphasis and difficulty in the study. In order to achieve higher system reliability and improve performance and eliminate all kinds of error of strapdown stable platform process what are stabilization while reducing the volume. In-depth analysis of the swing ship is on strapdown platform and mirror effect. The boat rocking and the sight stabilization mathematical model of mirror rotating. A study on the simulation what uses the MATLAB. By establishing the model of boat rocking, what analysis of the swings influence on the mirror steady accuracy and tracking accuracy. The existing stable servo control and principle has been detailed analysis. Through the simulation studies what compared their advantages and disadvantages. Also it has studied the coning error compensation method and the kalman filtering what influenced on the accuracy of strapdown mirror control system.
Finding the Pure-Strategy Nash Equilibrium Using a Fixed-Point Algorithm
Authors: Wu Zheng Tian , Dang Chuang Yin , Zhu Chang An
Published: September 2013

It is well known that determining whether a finite game has a pure-strategy Nash equilibrium is an NP-hard problem and it is an active research topic to find a Nash equilibrium recently. In this paper, an implementation of Dang's Fixed-Point iterative method is introduced to find a pure-strategy Nash equilibrium of a finite n-person game in normal form. There are two steps to find one pure-strategy Nash equilibrium in this paper. The first step is converting the problem to a mixed 0-1 linear programming formulation based on the properties of pure strategy and multilinear terms in the payoff function. In the next step, the Dangs method is used to solve the formulation generated in the former step. Numerical results show that this method is effective to find a pure-strategy Nash equilibrium of a finite n-person game in normal form.
Improving Statistical Parser by Recognition of Chinese Number and Quantifier Prefix in Machine Translation
Authors: Xiong Wen , Jin Yao Hong , Liu Zhi Ying
Published: September 2013

By studying the Chinese number and quantifier prefix (CNQP) as a special language phenomenon in machine translation, this paper presents a CNQP recognition method, which is rule based and independent of word segmentation. The method expressed CNQPs compositions using Backus-Naur Form (BNF), and took the numeral as the active information and the quantifiers as the boundaries of the CNQPs. To avoid the word segmentation noise, a forward maximum matching method was used for obtaining the compositions of the CNQPs, which can be fed into the statistical parser for the analysis of the Chinese sentences. The experimental results indicate the proposed method as a pre-processing module can effectively improve the parsing results of the statistical parser without retraining on experimental data constructed manually, which can further enhance the translation qualities.
Design of the Broadband Standard Signal Generator for Laser Locating System of the Mine Hoisting Container
Authors: Fan Di , Gao Yan , Zhao Yue
Published: September 2013

As the key junction between the ground and underground, hoisting systems as well as mines themselves are of vital importance to coalmine production. Laser ranging method is studied as a new solution of getting the real-time position directly. Furthermore, multi-scale phase based laser ranging principles are utilized in the system. The paper is aimed to conduct research into the problems existing in standard signal generating while using laser to locating the hoisting container, and to design standard sine generator circuits with DDS technology and DDS devices AD9850 to generate multiple frequency standard signals. In view of the serious noise disturbance in high frequency output, 4-order Chebyshev low-pass filter is designed, by using the integrated analog filters LT 6600-15, to filter the sine signals from AD9850 and to effectively weaken the noise disturbance. The established practical circuits are tested, obtaining trillion level high frequency and low frequency sine signals and fulfilling the requirements for the location system of hoisting containers.
A Novel Feature Selection Method for Process Fault Diagnosis
Authors: Yu Chun Mei , Yang Sheng Bo
Published: September 2013

To increase fault classification performance and reduce computational complexity,the feature selection process has been used for fault diagnosis.In this paper, we proposed a sparse representation based feature selection method and gave detailed procedure of the algorithm. Traditional selecting methods based on wavelet package decomposition and Bhattacharyya distance methods,and sparse methods, including sparse representation classifier, sparsity preserving projection and sparse principal component analysis,were compared to the proposed method.Simulations showed the proposed selecting method gave better performance on fault diagnosis with Tennessee Eastman Process data.
Research on Construction Strategy of Seven Layers Model Based on the Combination of Hardware and Software and Information Technology
Authors: Wang Rong Yuan
Published: September 2013

With the introduction of frequent curriculum reform and information technology, it has changed the nature of foreign language teaching work to a certain extent. Foreign language teachers are shaken and overturned by the original teachers identity. Now foreign language teachers identity research has become the current hot topic in new era. This paper uses seven-layers model of educational service to analyze the current situation of foreign language teachers identity, then uses hardware and software to research on the training courses and teachers professional development community and other resources. Finally, the teaching method, school and district levels service facilities will be integrated into efficient teaching, in order to improve teaching quality. This method can solve the identity of the foreign language teachers professional development. At the same time, it also provides a certain degree of reference on other subjects teachers identity.
Early Warning System Based on GIS and WSN in Tea Garden
Authors: Zhou Li , Zhang Shu Hui , Song Yan Dong
Published: September 2013

The rational database including the distribution, changes and testing facilities status of temperature & humidity in tea garden is created using the MapInfo 9.5. A set of the tea garden wireless utilities is established using the ZigBee module. The temperature & humidity real-time monitoring system and early warning system for Frost Prevention is established using Mapbasic. This system can get real-time information of temperature & humidity of nodes in different locations and give frost warning early. The frost prevention fans can be timely started, once temperature inversion happens. At the same time, the manager of tea garden can realize real-time monitor of the work status and quick location of facilities with the help of GPS.
Improvement on a Multi-Channel Broadcast Encryption Scheme
Authors: Zhao Xing Wen , Li Hui
Published: September 2013

Broadcast encryption provides a convenient method to distribute digital content to subscribers over an insecure broadcast channel so that only the qualified users can recover the data. In some broadcast encryption based systems such as pay-TV, multiple ciphertext headers (via multiple channels) are needed since the sender needs to send various contents to different groups of subscribers. Each receiver needs to store all headers in order to switch channel fluently. Recently, Phan et al. described a multi-channel broadcast encryption scheme, in which the sender encapsulates multiple ephemeral keys into one ciphertext header so that each receiver only stores one ciphertext header and still can recover various ephemeral keys for different contents. We present an improvement on their scheme, which will reduce the size of public key and the computation cost for decryption. The improved scheme can be used to construct efficient dynamically privileged broadcast encryption system.
Design and Implementation of a Mobile Intelligent District Value-Added Service Platform Based on SIP and Web Service
Authors: Huang Lian Fen , Huang Shu Rong , Lin He Zhi , Hu Yi Bo
Published: September 2013

The popularization of mobile intelligent devices has greatly enriches the function of intelligent district. The intelligent district system which is IP-centric and provides multimedia services such as voice, fax, data, and images has becomes focus of the field. In this article, a mobile intelligent district value-added service platform based on SIP and Web Service is introduced, with the intelligent terminal devices, district residents can get customized service information on their own initiative, and they can communicate with the terminals in the district. Based on the implementation of the platform, information pushing function, weather forecast service and SIP message service are tested, and the result shows the feasibility of the platform, which can be used to satisfy the growing needs of district residents.
Towards Measurement on the I2P Network
Authors: Wang Xue Bin , Liu Pei Peng , Li Cheng Long , Tan Qing Feng
Published: September 2013

The I2P network has been widely used to protect user privacy via an open network of onion routers run by volunteers. To the best of our knowledge, the behavior of peers in the I2P network has not been well investigated in the existing researches. In this paper, we first present a simple and effective way to collect peers in the I2P network. Each day over 82% peers has been collected compared to the statistics from the statistics web site. With the data collected, we perform an empirical evaluation, revealing the phenomenon about IP address aliasing and identity aliasing. As identity aliasing makes bad impact on the availability and anonymity of the I2P network, we introduce family concept into the I2P network to mitigate the impact.
An Improved Artificial Fish Swarm Algorithm Based Handover Decision Scheme with Always-Best-Connected Supported
Authors: Wang Xing Wei , Qu Da Peng , Huang Min
Published: September 2013

Oriented to the actual requirements of roaming among heterogeneous networks, a handover decision scheme with ABC (Always Best Connected) supported was proposed in this paper. Network application types, access network and mobile terminal models were described. Plenty of factors such as access network conditions, application requirements, users preference in coding systems and providers, mobile terminals condition etc were considered comprehensively, an optimal handover scheme of N terminals among M access networks was designed based on improved artificial fish swarm algorithm. By gaming analysis, Pareto optimum under Nash equilibrium of user utility and network utility was achieved or approached to the found solution. Simulation results showed that the proposed scheme has better performance than existed schemes.
Analysis of the Third Party Testing of Information System Software
Authors: Wang Hua , Zhao Guo Hong , Shi Mao Sheng , Zhang Fa Jiang
Published: September 2013

Based upon the synopsis of the third party testing, this paper describes the basic contents of the third party testing, and then puts forward the practical methods, essentials and process of the third party testing. Meanwhile, testing analysis and policy are presented. This will benefit the development of software and information system.
Dynamic Key Distribution Scheme Based on Complex Network Synchronization
Authors: Liu Ying
Published: September 2013

As a low-consumption, low-cost, distributed self-organized network, wireless sensor network communicates as a self-similar, small-world and scale-free complex network. Based on the defects analysis of digital communication and sufficient necessary condition of analog signal synchronization, we proposed a novel key distribution scheme in this paper. While some performance analyses as well as some prospects are also given in the end.
A Community-Based Message Transmission Algorithm for Opportunistic Networks
Authors: Ren Zhi , Liu Yan Wei , Peng Shuang , Li Ji Bi
Published: September 2013

In opportunistic networks, routing algorithms based on community division have some redundant forwarding in the process of message transmission. In this paper, we propose a community-based message transmission algorithm (CMTA). CMTA makes fully use of the nodes within communication overlapping areas to forward messages and optimizes forwarding determination mechanism to carry message nodes, then CMTA redesigns the message transmission condition and reduces the number of message forwarding which improve the efficiency of forwarding messages and reduce the average end-end delivery delay. Theoretical analysis and simulation results show that CMTA outperforms an existing Epidemic routing algorithm and the Prophet algorithm and CHMTS in terms of delivery ratio, average end-end delivery delay, relay ratio, etc.
Matching Design of Assist Characteristic for Electric Hydraulic Power Steering System of Electric Bus
Authors: Shi Guo Biao , Cui Jin Long , Gu Peng
Published: September 2013

Electric hydraulic power steering system (EHPS) has the characteristics of high energy efficiency and reliability. In this paper, we focus on the design and analysis of assist characteristic for EHPS of electric bus. The relationship of steering assist power, steering wheel torque and steering resisting torque was analyzed; steering system model and vehicle dynamic model were built. By EHPS simulation, the relationship of pump flow rate, steering wheel angular velocity and vehicle speed was deduced and 3-D assist characteristic curve map was plotted, which was suitable for electric bus. In order to apply the assist characteristic curve into practice, we optimized the curve through BP neural network, and then obtained the assist power value under any vehicle speed and steering wheel angular velocity. Finally, EHPS simulation verified the optimized assist characteristic curve having a good performance.
Efficient Detection for Top Part of Research Paper with Layout Index
Authors: Zhang Bo , Zou Dan Qing
Published: September 2013

The detection of elements in top part of research paper is the key problem in layout analysis, because these elements are often used as the search items by user. This paper provides a index-based method for auto detection of top part from research papers. Different from existing methods, an index is used for detecting items from top part of research paper. Experiments show the advantage of our method over existing methods, and future work is also described in the paper.
Design of Power Quality Management Software Based on Virtual Instrument and Oracle
Authors: Chen Wei , Chen Long , Li Ming
Published: September 2013

This paper presents a software design useful for power quality analysis and data management. The software was programmed in LabVIEW and Oracle, running on Windows in a regular PC. LabVIEW acquires data continuously from the lower machine via TCP/IP. Using its database connection toolkit, LabVIEW accesses to Oracle to stores and retrieve the power quality data according to different indicators. A friendly GUI was built for data display and user operation, taking advantage of the powerful data-handling capacity of LabVIEW and its rich controls. Moreover, Excel reports can be exported using report generation toolkit in LabVIEW. The software greatly improves the data analysis and management capacity.
A Text Categorization Method Based on SVM and Improved K-Means
Authors: Xia Rong Ze , Jia Yan , Li Hu
Published: September 2013

Traditional supervised classification method such as support vector machine (SVM) could achieve high performance in text categorization. However, we should first hand-labeled the samples before classifying. Its a time-consuming task. Unsupervised method such as k-means could also be used for handling the text categorization problem. However, Traditional k-means could easily be affected by several isolated observations. In this paper, we proposed a new text categorization method. First we improved the traditional k-means clustering algorithm. The improved k-means is used for clustering vectors in our vector space model. After that, we use the SVM to categorize vectors which are preprocessed by improved k-means. The experiments show that our algorithm could out-perform the traditional SVM text categorization method.
ASIC Designing and Implementation of RFFE
Authors: Shi Bing Yin , Zheng Jian Hong
Published: September 2013

MIPI RF Frond-End Control Interface (RFFE) is a specification of a bus interface specifically designed for the needs of current and future mobile wireless systems to control the slave devices in an RF front-end.This new technique has so many advantages over I2C and SPI interface.So in this article I give an overview of MIPI RFFE and the stratege to realize the IP for RFFE,finally I describe the results getting from simulating the IP through VCS.It is convenient to implement and control the specified IP,and which can be used wisely in so much fields.
Bidirection Greedy Walk Based Mobile-Base-Station-Location Privacy in Wireless Sensor Networks
Authors: Zhao Yong Fu , Yao Jian Bo
Published: September 2013

As wide applications of wireless sensor networks, privacy concerns have emerged as the main obstacle to success. When wireless sensor networks are used to battlefield, the privacy about base-sation-locations become a crux issue. If base-sation location will be exposed to adversary, the consequence is inconceivable. Random data collection scheme has a problem that message latencies become larger higher for protecting mobile-base-station-location privacy .In this paper, BDGW (Bidirection Greedy Walk) is proposed to preserve mobile-base-station-location privacy. In BDGW, data are forwarded by greedy walk and stored at pass nodes in the network, the base-sation move in bidirection greedy walk to collect data from the local nodes occasionally, which prevents the attackers from predicting their locations and movements. Compared to random data collection scheme, BDGW has smaller message latencies, while providing satisfactory mobile-base-station-location privacy.
The Method of Discover the Attributes' Sequences of Objects in the Formal Context
Authors: Dai Xue Song , Ma Yuan , Hong Wen Xue
Published: September 2013

Formal context is one of the research contents of formal concept analysis theory. In concept lattice, the attributes of the object are equivalent and there is no hierarchy. Facing to this problem, the equivalence relation which is on the attributes' set is defined and the corresponding σ operation is proposed. On this basis, the structure method of attribute hierarchical diagram is presented and attributes' sequences of associated objects are obtained. This conclusion enriches and extends the analysis method of the formal context.
An Improved Negative Binomial Approximation for Negative Hypergeometric Distribution
Authors: Hu Dong Ping , Cui Yong Quan , Yin Ai Hua
Published: September 2013

This paper gives an improved negative binomial approximation for negative hypergeometric probability. Some numerical examples are presented to illustrate that in most practical cases the effect of our approximation is almost uniformly better than the negative binomial approximation.
Research on Efficient Spatial Keyword Queries Supporting Wildcard
Authors: Pan Jin Kun , Li Dong Sheng
Published: September 2013

With the popularity of location-based services, Web contents are being geo-tagged and spatial keyword queries that retrieve objects satisfying both spatial and keyword conditions are gaining in prevalence. The existing spatial keyword queries focus on exact match or prefix match of the keywords cannot satisfy the demand of wildcard based imprecise match in many realistic scenes. Aiming to solve this problem, two methods which are fit for different situation are put forward: the inverted file and R-tree integrated index which fits for the situation that requires high time efficiency and the Prefix Bloom Filter and R-tree integrated index which fits for the situation requiring high space efficiency. The effectiveness of the two indexes is valid through experiments.
Study on the Element Naming in XBRL Taxonomies
Authors: Wang Ding , Wei Jun Jie , Huang Min , Wang Ying
Published: September 2013

XBRL is the latest technology used in processing accounting information. Elements in XBRL are facts which may be reported about a business activity. Element names are the character strings which uniquely identify each element. This paper examines the existing rules on element naming. With extensive analysis of current practices for XBRL element naming in the foreign and Chinese taxonomies, several alternative approaches are set out. The considerations are proposed to improve the standardization of taxonomy creation.
Research on Pressure Field of Hydrostatic Center Rest
Authors: Zhou De Fan , Zhou Qi Hui , Meng Xiu Li , Yu Xiao Dong , Wang Zhi Qiang , Liu Dan , Zhang Yan Qin , Jiang Hui , Yu Xin , Wang Chun Zhou
Published: September 2013

In order to solve the mechanical deformation of the hydrostatic center rest, a numerical simulation concerning pressure field of hydrostatic center rest is studied. CFX of ANSYS has been used to compute three-dimensional pressure field of gap fluid between workpiece and bearing pillow. This research analyzes the influence of rotation speed on the bearing pressure performance according to lubricating theory and computational fluid dynamics, and it has revealed its pressure distribution law of gap oil film. Results indicate that an improved characteristic will be affected by rotation speed easily, and oil cavity pressure increases by gradually with rotation speed enhancing. The reliability of a hydrostatic center rest can be predicted through this method.
The Impact of Microblog Marketing on Consumer Attitude and Behavior
Authors: Bao Xin Ren , Shanygina Di Na
Published: September 2013

Social media, especially microblogs, play more and more important role in our every-day lives. Using microblogs as a new e-commerce platform is an emerging trend, increasing number of enterprises use microblogs to achieve their goals of communicating and building relationship with existing and potential customers. But do marketers fully understand what customers are looking for on a corporate microblog? What are the reasons that generate peoples inclination to start and keep following brands microblog, and how does effective microblog marketing policy affect consumers attitude and behavior? In this article we take an attempt at answering these questions. Based on the previous research analysis and survey conducted for this study, this paper makes a conclusion about an impact of microblog marketing on consumers behavior and attitude, in order to help marketers understand and make the most out of the new tool they have.