bluuebunny/crossref_metadata_2025 huggingface dataset:
Ontology Modeling of Manufacturing Resources
Authors: Wei Jun Ying , Zhong Pei Si , Guo Chun Fen
Published: April 2011

Aiming at the current situation of manufacturing enterprises’ resources, the definition and the classification of manufacturing resources are given out. Combining with the dominance of ontology in knowledge reuse and sharing, the ontology classification hierarchy tree of the standardized part resources is defined. By analyzing the properties information of rolling bearing, its ontology model is established based on OWL. The OWL model can reflect better the essential relationship and the semantic relations between concepts, providing a good informationization foundation for manufacturing resources discovery, reuse and sharing.
Envelope Analysis of Gear Faults Based on Spectral Kurtosis
Authors: Liu Ting Wei , Guo Yu , Li Bin , Ding Yan Chun , Zheng Hua Wen
Published: April 2011

An improved envelope analysis approach based on spectral kurtosis (SK) and complex shifted Morlet wavelet in the diagnostics of local gear faults is proposed in this paper. For enhancing impact signals of gear faults, a prewhitting process is performed to the original signals by autoregressive (AR) models firstly in the approach. Then, the envelopes of signals are extracted by Morlet wavelet filter family and the optimal center frequency and bandwidth of the band-pass filters is determined by SK. In the improved approach, not only the optimal parameters of the band-pass filters in envelope analysis can be obtained adaptively by, but also the number of the required band-pass filters can be reduced dramatically. Simulation results verified the feasibility of the present scheme positively.
Study on Color Classification of Pork with Computer Vision System Based on Different Color Difference Formula
Authors: Zhao Hong Xia , Luo Zhi Yang , Yuan Xin , Li Yuan
Published: April 2011

The bad degree of meat and the color change have a close relation. Computer vision is not under the influence of physiological and psychological factor of person; Appraisement standard is objective and steady. Therefore, computer vision system has been established, which can do collection, management, display, and appraisement of porky color. The CIEL*a*b* and CIEDE2000 color difference formula were introduced into the classification of pork, the result was identical. Because the calculation course of CIEDE2000 color difference is complex, so the CIE1976L*a*b* color difference is still adopted to calculate color change at actual production.
Customer Satisfaction of Online Music Services in Taiwan
Authors: Pi Shih Ming
Published: April 2011

Many products selling on the Internet channel include music, which also sells in brick and mortar stores and in online stores, developed from digitalized music. This study attempts to explore which influence among the service quality, content quality, and the website service quality affects the paying customers’ satisfaction, and studies the relationship of customer satisfaction and customer loyalty. Further, the study probes the factors of customer relationship management. The research framework is based on the customer relationship management of digital content industry model. Results revealed that privacy, system availability, service provider’s reliability, perceived enjoyment, perceived ease of use, and fulfillment significantly affects consumers’ intentions to be paid-members of online music services.
Preparation of TiO2 Nanoparticles in the Solvothermal Method
Authors: Wang Li Qin , Yang Xiang Ni , Zhao Xiu Li , Zhang Rui Jun , Yang Yu Lin
Published: April 2011

TiO2 nanoparticles with excellent photocatalytic and degradation property were prepared in the solvothermal method. They were characterized by the means of the transmission electron microscopy (TEM), the X-ray powder diffraction (XRD), the thermogravimetric analysis and differential thermal analysis (TG-DTA), the Fourier transform infrared spectroscopy (FT-IR) and nitrogen adsorption. The photocatalytic and degradation property for the methyl orange aqueous solution was researched. The results showed that as-prepared TiO2 nanoparticles were spherical crystals, and the particle size was about 10 nm. They had integrated crystal form, high crystallinity and thermal stability. The adsorption-desorption isotherms of TiO2 particles corresponded to the typical type IV isotherm, which is a clear N2 hysteresis loops of type H4 in the desorption branch. The average pore size was 3.572 nm, the specific surface areas was 203.245 m2/g. Moreover, the obtained TiO2 particles had perfect photocatalytic and degradation property for the methyl orange aqueous solution. When reacted for 150 min, the degradation rate of the methyl orange aqueous solution was at the peak, up to 99.1%.
A Dual Description Logic for the Relations in Databases
Authors: Li Feng Zhi
Published: April 2011

This paper introduced a dual description logic for relations, in order to represent the difference of tuples and attribute values. In the logic, concepts are classified into two classes as follows: tuple-concepts and attribute-value concepts. This paper firstly gives the logical language, syntax and semantics of the logic, and secondly defines a transformation of a relation in a database into a knowledge base in the dual description logic, and last proposes a transformation of a model for the dual description logic into a relation.
Power Aware IP Lookup Architecture and Algorithm for Green Router
Authors: Yuan Bo , Wang Bao Jin , Zhao Bo
Published: April 2011

With the development of next generation network which used Ipv6 technology, recent routers architecture meet many questions in performance, complexity and power consumption. With the expanding of network scale, how to implement a low power and MSF for IP lookup is a challenge in green high-powered router design. This paper represents a FIB multi-level mapping routing lookup architecture FMML, the dynamic routing table mapping algorithm is designed to determine the optimal strides for building tree bitmap tries so that the worst-case power consumption of the IP lookup engine is minimized. Experiments using real-life routing tables demonstrate that careful design of the data structure can reduce the power consumption dramatically.
Rotary Ultrasonic Motor Using Longitudinal and Bending Modes and its Analysis
Authors: Liu Jun Kao , Liu Ying Xiang , Chen Wei Shan , Shi Sheng Jun
Published: April 2011

A rotary ultrasonic motor using longitudinal and bending vibration modes is proposed in this study. The proposed motor contains two exponential shape horns located on two ends, and the end tips of the horns are used as the driving feet. Two groups of PZT elements (Longitudinal PZT and Bending PZT) are clamped in the middle of the motor by a double head flange bolt to excite the longitudinal vibration mode and bending vibration mode of the motor, respectively. By the composing of the longitudinal and bending vibration modes, elliptical trajectory vibrations can be generated on the end tips of the horns, which have the same rotation directions and can driving the rotor together by frictional force. After the introducing of the working principle, modal analysis is developed to tune the resonant frequencies of the longitudinal and bending vibration modes to be close with each other. At last, transient analysis is developed to gain the vibration characteristics of the motor, and the gained elliptical trajectory motions of particles on the driving parts verify the feasibility of the proposed design.
The Characteristic and Mechanism of Lead Pollution in Soil Profiles from a Sulphuric Acid Slag Pile Sit in Guangdong,China
Authors: Liu Jing Yong , Ning Xun An
Published: April 2011

The soil samples in a profile were collected around the pyrite slag pile site near a sulfuric acid plant in Guangdong province and the contents of lead were investigated detail. At the same time, the mechanism of lead pollution was principium analyzed. The research found that the lead pollutants were mainly concentrated in soils surface layer about 0-10cm and shown characteristics of contents rapidly decreasing along the uprights. the main factors that affected the transference of lead from the slag to the soil were the filtering by acid rain and itself acidification of the slag. Iron oxide colloid and organic matter may have been responsible for the lead retention in soil.
A CAE/CAI Integrated Method for Sheet Metal Forming
Authors: Liu Jun , Cheng Si Yuan , Li Su Yang , Zhang Xiang Wei
Published: April 2011

With the development of computer technology, Computer Aided Engineering (CAE) and Computer Aided Inspection (CAI) are more widely used in stamping products for design and manufacture, but there is a lack of link between each other. On the one hand, results of CAE analysis are not effectively used and evaluated; the other hand, single CAI is not able to analyze reasons for wrinkle, crack, or springback in stamping products. To compensate these shortcomings, a CAE/CAI integrated method is established to ensure information sharing between of them, which is helpful for guiding the design of sheet metal forming. By this method, the feasibility of sheet metal forming is analyzed and forecasted, and the results of deformation are effectively assessed by 3D comparison, 2D comparison and GD&T inspection. And ultimately the superiority of CAE/CAI Integrated method is proved by case study.
Non-Cylindrical Fuselage Structural Optimization of BWB Civil Aircraft
Authors: Zhang Yong Jie , Wang Bin Tuan
Published: April 2011

Blended-Wing-Body (BWB) civil aircraft possesses so light structure, high lift-drag ratio and low fuel burn that it has been an important topic of future civil aircraft. But internal pressure causes large bending stress instead of skin-membrane stress in BWB non-cylindrical fuselage. For 150 seats BWB fuselage, a composite 3-bay fuselage model is analyzed and two improved configurations of braced fuselage derivatives are designed in this paper. By optimization analysis, the optimized non-cylindrical fuselage structures are obtained in low bending stress and deformation condition, and optimized layer thicknesses ratio of composite material are presented. The optimization conclusions are very valuable and applicable for the fuselage structural design of BWB civil aircraft.
Research on the DSP- Based Grid-Connect Inverter for 3kW Fuel Cells
Authors: Chen Qi Hong , Wang Jia Qi , Huang Liang
Published: April 2011

In this paper, the single-phase synchronization inverter of fuel cell is taken as the main topic. The network system topology, the control strategy and the phase-locked algorithm are analyzed in detail. The system’s main circuit topology, the software PLL principles and process are proposed, and they are verified by the experiments.
A Novel ECC-Based RFID Authentication Protocol
Authors: Fang Ming Wei , Wu Jun Jun , Zhang Xin Fang , Chen Hong
Published: April 2011

RFID technology plays an important role in our daily life nowadays. It widely used in the automatic identification system by embedding the tag into product. However, some security risks presented due to radio frequency signal channel between the tag and the reader which may lead privacy disclosure for the user. Various solutions are proposed to resole to security issues in RFID system, but there still presented some limitations. A security elliptic curve cryptography based authentication protocol is presented in this paper to preserve the privacy of the RFID system. The proposed protocol provides mutual authentication and a security communication channel between the tag and the reader. By the security analysis, our protocol can resist common passive and active attack; moreover, it also can provide forward security.
Using Chemical Coprecipitation Method to Prepare Magnetite Magnetic Fluids and Explore its Applications in Hyperthermia
Authors: Tsai Chang Shu , Chen Hong Yi , Chang Kwo Ping
Published: April 2011

Magnetic nano-particles are extensively studied in tumor therapy, target drug, gene screen, cell separation and magnetic resonance imaging study, due to theirs unique features such as its superparamagnetism, high saturation magnetization and high effective surface areas, etc. The aim of this work is to emphasize on the preparation and characterization of Fe3O4 magnetic nano-particles and its applications in hyperthermia . As the results, the Fe3O4 magnetic nanoparticle in this work has shown good qualities as well as in the literatures. It may be feasible to utilize in the field of hyperthermia.
Adaptive Blind Equalization with Variable Step-Size Modified by Attenuation Function
Authors: Xiao Ying , Li Zhen Xing
Published: April 2011

Step-size is one of the important parameters which influence the performance of blind equalization, a variable step-size method control by attenuation function according to instantaneous gradient and iterative times is proposed in this paper. Initially, set larger step-size to obtain faster convergence, with iterative times increasing, step-size would decrease control by attenuation function for instantaneous gradient reducing. Step-size changes according to this method consistent with the demand variable step-size adaptive algorithm that can obtain combination of convergence rate and convergence precision to improve the performance of blind equalization. Simulations show that this method performs better than conventional blind equalization with constant step-size.
FTIR/ATR Spectroscopy Analysis of COD in Wastewater Based on Combination Optimization of SG Smoothing Modes and PLS Factor
Authors: Pan Tao , Ji Qiang , Han Yun , Li Peng Zhao
Published: April 2011

A directly rapid quantitative analysis method for chemical oxygen demand (COD) of wastewater was established by Fourier transform infrared (FTIR) spectroscopy and attenuated total reflection (ATR) technology. The combination selection of Savitzky-Golay (SG) smoothing modes combined with partial least squares (PLS) factor was applied to the model optimization here. The optimal smoothing parameters were 2ndorder derivative smoothing, 6thdegree polynomial and 51 smoothing points. The corresponding optimal PLS factor, root mean squared error of predication (RMSEP) and correlation coefficient of predication (RP) were 11, 24.4 (mg/L) and 0.968 respectively, which was obviously superior to the direct PLS model without SG smoothing. This demonstrated that the combination selection of SG smoothing parameters and PLS factor can be effectively applied to the model optimization for FTIR/ATR analysis of COD in wastewater.
Maintenance-Free Technologies on Digital Methane Detection System
Authors: Zhang Xu Hui
Published: April 2011

Methane monitoring and alarm system is very important because it guarantees the coal mine production safety. After analyzing impact factors on methane monitoring, this paper established a mathematical model of gas detection system and introduced the key technologies for maintenance-free is dynamic adjusting of system state, auto-zero, auto calibrations of nonlinear and post-processing of the data. The hardware architecture of the mini intelligent methane sensor based WSN (Wireless Sensor Network) and the automatic and visualized calibration technologies of intelligent methane detecting system are described in detail. Finally, the experimental data is analyzed. The system improved the detection accuracy, prolonged calibration cycle of the methane measuring device and lessened the working strength on calibration.
Bandwidth Guaranteed Multicast Scheduling for Buffered Crossbar
Authors: Wang Peng , Chen Shu Qiao , Hu Hong Chao
Published: April 2011

The limitations in complexities and extensibilities of current scheduling policies based on combined input and cross-point queuing switch (CICQ) are first analyzed. To overcome the deficiencies in supporting fair and QOS scheduling, we propose a fair and simple high-performance multicast scheduling algorithm for Combined Input Crosspoint Queued Switches, which is called multicast Fair Service and Group Smoothed Round Robin (mFGSR). The complexity of the algorithm is onlyO(1).mFGSR groups and schedules flows according to the weight of flows, thus it has good fairness and can adapt to the need of real-time performance. Theorotical analysis and simulation results show that mFGSR exhibits good delay, throughput and anti-burst performance.
Route Choice Options Based on Lattice Alliance Certification in Wireless Networks
Authors: Zhang Qiu Yu , Jiang Wen Tao , Bao Guang Bin
Published: April 2011

For the existing certification that ignores trust relationship between inter-domains will lead to the certification failure phenomenon, in the consideration of trust relationship circumstances this paper presents an alliance certification scheme based on the lattice combining Dijkstra path search algorithm between the domains. Theoretical analysis shows that dual-traction certification mechanism greatly increases system security, also avoids the single point collapse. According to calculating the path weight by Dijkstra algorithm to find the shortest path in the weighted graph, the scheme can improve the certification efficiency.
Sensitivity Analysis of Large Unit Spiral Case for Different Reinforcement Arrangement
Authors: Xu Xin Yong , Wang Jian Wei , Ma Zhen Yue
Published: April 2011

A numerical model for spiral case of hydropower station is built. The contact is considered and the sensitivity analysis for different reinforcement ratio is analyzed. The impact of different ratios on structure is studied. The stress and mechanical characteristics of steel bar is analyzed. The contact status is taken. The rational reinforcement ratio range, the process and evolution regularity of concrete cracks from microcosmic aspect to macroscopic aspect are obtained.
Design of Image Classification System Based on Feature Extraction
Authors: Guo Guang Nan , Chu Mei , Wang Xiao Hua , Huang Xiao Bo , Wei Zheng
Published: April 2011

Image classification is a kind of image data mining method to classify different targets based on different features reflected in image information. The paper designed a kind of image classification system based on feature selection, which utilize feature selection and feature weight to optimize the features and obtain features that can reflect essential of classification, so as to improve image classification accuracy. Meanwhile, the paper gave material implementation method of main modules of image classification system. Image classification experiment based on the system proves effectiveness of the designed system.
Numerical Simulation of Penetration Effect of Spherical Fragment on Square Honeycomb Sandwich Plate
Authors: Wang Tao , Yu Wen Li , Dong San Qiang , Gao Yun Liang
Published: April 2011

In this paper, a spherical fragment penetrating to square honeycomb sandwich plate and solid plate which has the same mass as sandwich plate are simulated by LS-DYNA code. The fragment impacts plates at normal incidence and oblique incidence with 30º impact angle at the velocity of 300m/s, 350m/s, 380m/s, 400m/s, 450m/s and 500m/s separately. And the damage pattern of sandwich plate, the acceleration of fragment and the energy absorption of sandwich plate are acquired. For sandwich plate, the acceleration of fragment is less than that of solid plate and the internal energy absorbed is larger that that of solid plate. The result can be used to design new active fragment to improve the damage effect to sandwich plate.
The Environmental Management and Corporate Social Responsibility of Small and Medium-Sized Enterprises: A Marginal Strategic Challenge?
Authors: Wang Heng
Published: April 2011

This paper analyses the influence of environmental management in the managerial perception in small and medium-sized enterprises as a competitive opportunity, and the effect of this managerial perception in the adoption of a higher proactive environmental management. It also shows that the link between environmental management and financial performance is neither necessary direct nor single, but it may depends on a mediating variable, the competitive advantage. A matrix inspired by Boiral’s research works is used to visualize the different types of environmental involvement of these organizations. The aim of this paper is to present a snapshot of the reality of environmental management in small and medium-sized enterprises.
A Method of Tools AE Signal Feature Extraction Based on Wavelet Packet Analysis
Authors: Guo Lan Shen , Dong Nai Qiang , Tian Wei , Zhang Fang Zhong , Li Cai Xiao
Published: April 2011

The paper developed a method of tools AE signal feature extraction based on wavelet packet analysis, we used wavelet packet analysis to decompose acoustic emission signals for different frequency range of the signal components. The will occupy of the main energy of AE signal frequency range is extracted as the recognition feature vector of tool wear. The method has higher accuracy according to experiments.
Designing of a CCD Sensor for On-Line Non-Touch Monitoring Roller Wear
Authors: Guo Yuan , Wei Lian Suo , Dai Xue Feng
Published: April 2011

Basing on the principle of laser-linear array CCD detective technology, a high accuracy non-touch on-line optical fibre CCD sensor for monitoring roller wear is brought forward. The principle and composition of the laser-linear array CCD detecting system and the operation process were expatiated. Aiming at the axes shifting of the roller during the detecting process, compensative steps were adopted from the vertical and the parallel detecting surface. And it enhanced the accuracy of the detecting system effectively. Experiments proved that the accuracy of the system could reach to the demand of practical production process. It provides a new method for the high speed, accurate and automatic on line detection of the roller wear.
University Digital Piano the Innovation of Teaching Methods and Practice
Authors: Zhu Jia
Published: April 2011

In allusion to insufficiency in teaching method of tradition “one-to-one” piano class, we lead to innovative means of "one-to-many" teaching method in digital piano lesson to resolve the issues, we analysis and research the issues in the development of digital piano collective classes, to look for a better and new piano teaching in universities.
Study on Data Mining System Multi-Task Scheduling Method Based on Precedence Constraints
Authors: Song Xu Dong , Hou En Zhen , Zhang Feng , Shi Liang Yu
Published: April 2011

Data Mining system has a large number of data processing tasks. This paper mainly studies on task scheduling problem which takes the minimum total completion time based on the m equivalent processors and n tasks with priority. Firstly, we propose a data mining system multi-task scheduling model. Secondly, we adopt genetic algorithm solving this model. Due to initial seed may not be satisfied with the precedence constraint, this paper uses the inverse adjacency list to modify. Finally, we show this model and its algorithm are feasible and valid by the simulation experiment.
Multimedia Music Teaching System Application
Authors: Zhu Jia
Published: April 2011

Early 1980's MIDI technology coming into being, it has created condition for the development of modern music technology. From the MIDI, computer music, multimedia music to music computer and network teaching, it has already played an important role in music education concept and the reform of the teaching means. In the higher music college's teaching, the best solution to realize the music teaching means modernization development is the configuration and application of multimedia teaching systems. We have the analysis and introduction on the teaching system hardware and software configuration and their in music teaching, creation, scientific research and management application.
Chondrogenic Ability of Bone Marrow Mesenchymal Stem Cells in Alginate and Collagen Sponge
Authors: Wu Jiang , Wang Guang Hui , Zhang Hong , Wu Yu Ping , Lv Yang Cheng , Liu Jing Song , Ma Jie Ke , Zhu Jiang
Published: April 2011

In the present study, we have demonstrated that alginate and collagen sponge can act as scaffolds in order to support 3-dimensional structure for the differentiated bone marrow derived mesenchymal stem cells (BMSCs) during chondrogenesis in vitro and in vivo. The chondrogenic induced BMSCs were well distributed and differentiation in scaffolds system before implantation, then they produced sufficient ECM in the implants to form chondroid aggregates in vivo. In our opinion, well-differentiated BMSCs is a crucial feature of cartilage repair and only can be achieved in scaffold matrix. Furthermore, when dealing with cartilage defects, alginate seem to be superior to collagen sponge, and the combinational strategy of pre-induced BMSCs combined with alginate 3D-culture might be useful in improving conventional autologous cells transplantation or free-cells scaffolds.
A Survey of Diagnosis Method for Interconnect in SRAM-Based FPGAs
Authors: Zhang Jie , Zhang Na , Zhu Xu Ming , Guan Yong , Liu Yong Mei
Published: April 2011

To further improve the fault coverage and accuracy of fault location in SRAM based on FPGAs interconnect, an efficient method of fault detection and location is presented. Eight types of programming based on multiple times programmable FPGA is used, and further improved fault coverage and accuracy of fault location. Analysis showed that the proposed methods could cover all interconnect single faults and locate five single faults to specific switch or locate bridge fault to a pair of segments.
Application of Nanometer Metal Oxides in Infrared Ray Shielding Transparent Thin Film
Authors: Guo Ai Hong , Tang Xue Jiao , Zhang Su Juan
Published: April 2011

Water-based infrared ray shielding coating, that is, nanometer metal oxide is added to the water-based paint, which has anti-IR features without affecting the transparency of the paint. In this paper, the nanometer oxides are prepared by sol-gel method, added into polypropylene sour. In order to improve the infrared ray shielding of the thin film, two kinds of nanometer oxides are added into the polypropylene sour with different volume ratios, the shielding performance of the paint is studied. Experimental results show: in the 8000 ~ 4000cm-1 range, the transmittances of infrared ray is 30% to 75%; in 4000 ~ 400cm-1 range, transmittances decrease significantly; 3% ZnO, 3% Fe2O3, 3% Y2O3, 2% Al2O3 are the best mass ratio of every single nanometer oxide; the infrared shielding rate of Fe2O3 and Y2O3 mixture with the volume ratio of 1 to 4 is better than Fe2O3 and Y2O3 single.
A Self-Adaptive Grid Resource Selection Algorithm
Authors: Qi Ning , Zhang Xiao Jun , Wang Bin Qiang , Guo Jia
Published: April 2011

In order to provide high Quality of Service (QoS), rational scheduling and resource allocation are needed when a great deal of tasks requesting grid resources. By quantifying some important properties of Grid QoS and maximizing cost-performance ratio of Grid system, a QoS-guaranteed self-adaptive grid resource selection algorithm based on SAGA which is named QoS-SGRSA is proposed, and the flow of the algorithm is introduced. In the low load condition, traditional resource selection algorithm is adopted, so an allocation policy is found rapidly. While in the high load condition, by means of using complementary advantages of GA and SA, it can guarantee that the search is on the optimization direction. Finally, we evaluated the effectiveness of QoS-SGRSA by emulation experiments.
Analysis on Cooperative GBN-ARQ Performance in TDMA Single Source and Single Relay Network
Authors: Dong Luo Bing , Yi Ke Chu , Li Zhi Qiang , Shen Pei Yi
Published: April 2011

This paper proposes a new cooperative GBN-ARQ（Go-Back-N Cooperative Automatic Repeat Request: GBN-CARQ）algorithm which is suitable for the single source and single relay wireless communication system based on TDMA, establishing the queuing model of single source and single relay wireless communication system based on TDMA and providing the expressions of its throughput and delay performance. By comparing with GBN-ARQ algorithm and normal cooperative ARQ（Cooperative ARQ：CARQ）algorithm, it is shown that GBN-CARQ algorithm has better average throughput performance.
Classification of Multi-Types of EEG Time Series Based on Embedding Dimension Characteristic Parameter
Authors: Yuan Ye , Huang Zhi Qiang , Cai Ze Min
Published: April 2011

We have studied the detection of epileptic seizure by EEG signals based on embedding dimension as the input characteristic parameter of artificial neural networks has been studied in the research before. The results of the experiments showed that the overall accuracy as high as 100% can be achieved for distinguishing normal and epileptic EEG time series. In this paper, classification of multi-types of EEG time series based on embedding dimension as input characteristic parameter of artificial neural network will be studied, and the probabilistic neural network (PNN) will be also employed as the classifier for comparing the results with those obtained before. Cao’s method is also applied for computing the embedding dimension of normal and epileptic EEG time series. The results show that different types of EEG time series can be classified using the embedding dimension of EEG time series as characteristic parameter when the number of feature points exceed some value, however, the accuracy were not satisfied up to now, some work need to be done to improve the classification accuracy.
Simulation Study on Wastewater Quality of Dongfeng Ditch with Artificial Constructed Rapid Infiltration System
Authors: Qiao Peng Shuai , Li Lei
Published: April 2011

This paper adopts the indoor artificial rapid infiltration system of simulated soil columns to deal with several water-quality indexes of wastewater from Dongfeng Ditch. The test indicates the change of several indexes, such as COD, ammonia nitrogen, total phosphorus, Cr6+ after the treatment, analyzes the influential factors and display the wastewater treatment effects of the simulation method in laboratory with different soil components and different wet- dry ratios.
Research on a Remote Network Monitoring Model for Large-Scale Materials Manufacturing
Authors: Zeng Xiao Hui , Li Man Hua , Luo Wen Lang
Published: April 2011

A remote network monitoring model for large-scale materials manufacturing is proposed, including five modules: center control module, data collection and fault alarm module, graph drawing module and data storage module. The center control module not only interacts with users, but also controls the other four modules to work together in harmony. According to this monitoring model, a remote network monitoring platform is designed and realized. The user can interact with the control center module through an Internet browser, and the information about the monitored manufacturing machines and devices can be displayed by means of text, chart, graphic and sound, etc. Moreover, the details about the problems or faults from the monitored objects can be obtained in time. The experimental results indicate that the network monitoring platform can accurately get the information of the monitored objects, and users can conveniently get the online running state of those monitored objects.
Estimation on Flux and Power Consumption of Twin Screw Pulping Extruder Based on Dimensional Analysis
Authors: Wang Ping , Guo Kong Hui , Lan Zhou , Hu Dong Kui
Published: April 2011

Formulas of flux and power consumption of twin screw pulping extruder (TSPE) based on extrusion model deal with nearly all of geometrical and mechanical parameters of the twin screw and the material processed, they are not convenient for estimation and initial design of the machine. Adopting dimensional analysis based on similarity theory and considering the most important factors, such as outer diameter of screw, rotational speed of screw and average pressure between barrel and material processed, estimation equations of flux and power consumption of the TSPE are deduced in the paper, and the correction coefficients are determined by experiment data. The estimation results show that the estimation and theoretical results have similar changeable trend although there are some errors. The work is easy to apply in the estimation and initial design of the TSPE, and complement the design theory and method of the TSPE.
Research on Weight Reduction Design of the Drive System
Authors: Shen Xiao Yang , Wang Ping , Yao Jun
Published: April 2011

In order to reduce the energy consumption and gear’s weight of drive system, based on electromechanical driving dynamics, the paper discussed the influence on rotary inertia of motor shaft caused by drive system of multi-shaft varying speed and its actuator, analyzed the influence on energy consumption and cycle of the motor’s startup or brake by sum rotary inertia (SRI), and explained the problems related to rotational speed of the motor and drive system design, also brought forward methods on weight reduction design (WRD) of drive system. Case studies show that in multi-shaft reduction drive, the ratio of the drive system rotary inertia on the SRI of the motor shaft is from 5.377% to 18.567%. Therefore, weight reduction of the drive system has obvious effect on lessening the energy consumption and cycle of the motor’s startup or brake. And the work of the paper offers theoretical gist for WRD of drive system.
Research on Natural Characteristics of Helical Gear in Gearbox for Wind Turbine Generator
Authors: Wang Jun Gang , Wang Yong , An Yan Tao , Huang Qi Lin , Xu Mao Lin
Published: April 2011

The three-dimensional helical gear model based on the geometric parameters is created by using software called PROE3.0. The natural characteristics of helical gear are analyzed by using the finite element method. The natural frequency of the helical gear is calculated by the software ANSYS and the principal mode of vibration is discussed. There are four vibration modes, which are circular vibration, torsional vibration, radial vibration and umbrella vibration. The phenomenon of resonance of the helical gear can be avoided by choosing suitable parameters and changing the natural frequency of the helical gear.
Research of Magnetic Stage Control System Based on DSP
Authors: Zhang Yi , Wei Shao Liang , Sun Hui Zhi
Published: April 2011

Nanometer two-dimensional platform can realize the accurate positioning of X and Y coordinate, and it is the important parts of Nanometer Coordinate Measuring Machines (Nano-CMM),in order to realize the demand of large scale nanometer position , the magnetic stage is adopted, and magnetic stage control system is researched in this paper ,and designed the current loop, velocity loop and position loop controller, and the affection of variable control parameters are researched, and at last the magnetic stage system is realized.
Finite Element Analysis of Hybrid Ceramic Ball Bearing Contact
Authors: Guo Bian , Han Yu Qiang , Lei W.J. , Wei Hong Bo , Li Fei Zhou
Published: April 2011

Because of its border nonlinearity, the contact between rolling element and ball race is difficult to be solved .With the development of computer technology and FEA theory, practical solution about contact is possible. This thesis which takes B7005C hybird ceramic ball bearing for example draws inner and outer contact stress and contact deformation and compares the results with Hertz solution by modeling, meshing, and setting contact pairs in ANSYS. The results show the use of ANSYS in bearing simulation is ideal, and can take a reference for the bearing simulation.
Anti-Stealth Radar with Spread Spectrum Technology
Authors: Fu Lian Qing , Yang Li Sheng , Tang He , Ma Ya Ning
Published: April 2011

The paper addresses the realization of anti-stealth radar and the problems which modern radars are confronted with. With the application of spread spectrum technology to radars, the capability of anti-stealth and anti-jamming is improved. Signal-to-noise (SNR) of the receiver increases through raising the launching power. Intercept probability decreases by transmitting multiple PN codes. Range of radar detector increases on condition that the intercept probability is unchanged. Simulation results show the validity of the proposed method.
Application of Hyper-Dispersant in PP/OMMT Composite
Authors: Yang Xu Yu , Wang Run Zi
Published: April 2011

Polymer and montmorillonite (MMT) clay composites are the hot topic of research because of its excellent performances, a kind of hyper-dispersant(MA) was synthesized as compatible component, and organo-montmorillonite(OMMT)/PP/MA composites were prepared by means of melt blending. The results showed that the PP /OMMT /MA were of better mechanical properties compared to (OMMT) /PP when the same content of MMT. When the weight content of PP/OMMT/MA is 100:2:0.5, the composites exhibited excellent machine performances, and the scanning electron microscopy showed the composites of (OMMT)/PP/MA were consistent., XRD test shows that PP has entered into layers of montmorillonite to form intercalated composites.
Research on Building Engineering Materials Supplier Selection Based on ANP Method
Authors: Chen Xiang , Zhou Xue Feng , Zhang Yong
Published: April 2011

It is an inevitable problem that how to select appropriate partner in case of constructing supply chain network taking contractor or owner as main body in the building engineering construction. Based on reference of existing research results of supplier evaluation index system and combining with main evaluation index of building construction, the paper built evaluation index system of building engineering materials supplier and introduced ANP that combining qualitative and quantitative method to select optimal supplier. Supplier selection example of some large scale building material supplier selection based on Super Decision verifies the feasibility of ANP selection method proposed in the paper.
Generalized Projective Synchronization for Fractional-Order Chaotic Systems with Different Fractional Order
Authors: Zhou Ping , Ding Rui
Published: April 2011

In this paper, we propose a generalized projective synchronization with different scaling factor for fractional-order chaotic systems with different fractional order. A method of constructing response system is given. The generalized projective synchronization conditions are obtained theoretically. Finally, the fractional-order Chen system is used to demonstrate the effectiveness of the proposed schemes.
Relationship between Metabolic Syndrome and its Diagnosis and Treatment of Hypertension Strategy
Authors: Pan Xing Shou , Huang Zhao He , Lan Jing Sheng
Published: April 2011

Explore the relationship between hypertension and metabolic syndrome, and treatment strategies. On the relationship between hypertension and metabolic syndrome were analyzed retrospectively, and how to conduct clinics for certain summary. Metabolic syndrome and hypertension exists a close relationship. Hypertensive patients with low HDL-C and high LDL-C level; whether oxidized LDL is high value or low value, MS group the incidence of cardiovascular disease is always higher than non-MS group. MS in blood pressure is an important component of integrated control of MS, can effectively prevent the occurrence of cardiovascular events and diabetes.
Preparation and Properties of Polyethylene/Montmorillonite Composites
Authors: Yang Xu Yu
Published: April 2011

A kind of hyper-dispersant(MA) was synthesized as compatibilizer between PE/OMMT composite. when the weight ratio of PE/OMMT/MA was 100:2:0.5,the composites had outstanding machine performances. SEM micrograph indicated that the PE/OMMT/MA composites mixed uniformly compared to PE/OMMT composites, and TEM test showed that PE had entered into layers of montmorillonite to form intercalated composites.
Effect of Nanocrystalline and Ti Implantation on the Oxidation Behaviour of Fe80Cr20 Alloy and Commercial Ferritic Steel
Authors: Sebayang Darwin , Khaerudini Deni S. , Saryanto Hendi , Othman M.A. , Sujitno T. , Untoro Pudji
Published: April 2011

The oxidation behaviour of developed Fe80Cr20 alloy and commercial ferritic steel at 1173 - 1373 K in air is studied. Effects of crystallite size and titanium implantation on the oxidation behaviour of specimens were analyzed based on oxide morphologies and microstructures. Oxide scales characterisations of specimen after oxidized were identified by X-ray diffraction (XRD). The surface morphology of oxide scales were examined with scanning electronic microscope (SEM) and energy dispersive X-ray analysis (EDX). The rate constant of oxidation were determined using Wagner method. The results show that crystallite size and titanium implantation has remarkably enhanced the oxidation resistance. The oxidation kinetics indicate that the developed Fe80Cr20 as the finer crystallite size both unimplanted and implanted specimens show better performance.
The Study of Forest Fire Color Image Segmentation
Authors: Li Si , Ren Hong E
Published: April 2011

Combined with the composition characteristics of forest fire image background when the forest fire occurred during different time periods of night and day, different image segmentation methods were applied to the forest fire color images of different time periods respectively, which could improve the efficiency of image processing. Meanwhile, application of H and S components from HSV color space, the strategy on color image segmentation which processed the segmentation processing to forest fire color images with complicated background was proposed combined with Otsu algorithm. The results of simulation experiment showed that the above-mentioned segmentation methods were obtained satisfactory segmentation effects when the segmentation on forest fire color images during different time periods of night and day were processed respectively. And also application of Otsu algorithm based on HSV color model, the forest fire image segmentation occurred in the daytime was processed, which overcame the interference factors of light and smoke, as well as the shortage of noise sensibility due to Otsu algorithm.
The 3-D Simulation of the LNGC in Pre-Cooling Process
Authors: Wang Zhong Cheng , Liu Xiao Yu , Kan An Kang
Published: April 2011

In this paper, through the three-dimensional simulation of the cargo hold in the pre-cooling process–LNGC to reflect the changes of the cooling fluid at the internal space of the hold in pictures, which can directly and properly show the changes. In that case, it is of great practical and theoretical significance for us to master the Pre-cooling law, increase the Pre-cooling rate and the management of LNGC in the future.
The Effect of a Temporary Bottleneck in Two-Lane of a Road on Traffic Flow Based on the Kerner-Klenov-Wolf Model
Authors: Liang Hai Jun , Yang Hong Yu , Xiao Chao , Sheng Peng , Zhang Jian Wei
Published: April 2011

Considering a temporary bottleneck made by special accidents, we proposed a new two-lane traffic model based on the KKW (Kerner–Klenov-Wolf) model. According to the difference of driver behavior and vehicle type, we present a new asymmetry lane-changing rules and the model of grabbing the entrance of a bottleneck. In our simulation, as demonstrated by various examples, the asymmetry lane-changing and the heterogeneous distribution of vehicles easily result in complex fluctuations of traffic flow and jam.
Development and Application of Driving Devices for Space Environment
Authors: Wen Jian , Xu Shu Hui , Wang Yan Chao , Liang Tong Fen
Published: April 2011

Driving device including mechanical and electrical components has to be protected by special designed shelter to fit the extreme temperature in space environment. A driving device based on stepping motor and gears box and protected by a warm box was developed and tested under simulated space environment. The temperature of the warm box was measured and controlled by electrical heater and paraffin phrase changing. Mathematical models of heat transfer and paraffin phrase changing were established, and temperature distribution of the warm box was simulated by Fluent. Based on the research, a driving device was developed and a control system for temperature in the box and motor motion was also developed. The device was tested under simulated space environment more than 1000 hours, and it was used in EVA space suit experiment successfully.
Research and Development on Secure System of EPC Internet of Things Based on RFID and WSN
Authors: Xie Xin , Wu Ying , Chen Hong Lei
Published: April 2011

Electronic Product Code (EPC) system and Radio-frequency Identification (RFID) play an important role in the Internet of things. We analyze the security threats which exist in the communication channel among RFID components, for this reason, an encryption mechanism which is added into it. And, hundreds of sensor nodes can form one Wireless Sensor Network (WSN) successfully, which, to a large extent, owes to the special node architecture. This paper proposes a secure EPC system model to ensure the security of the whole EPC system by implanting the components of RFID into WSN nodes.
Analytic Solutions of an Iterative Functional Differential Equation
Authors: Liu Ling Xia
Published: April 2011

This paper is concerned with the existence of analytic solutions of an iterative functional differential equation. By constructing a convergent power series solution of an auxiliary equation, analytic solutions for the original differential equation are obtained. We discuss not only those α at the hyperbolic case 0<|α|<1 but also those α near resonance under Diophantine condition.
An Effective Simulated Annealing-Based Mathematical Optimization Algorithm for Minimizing the Lennard-Jones Potential
Authors: Li Guo Cheng
Published: April 2011

The Lennard-Jones (LJ) Potential Energy Problem is to construct the most stable form of N atoms of a molecule with the minimal LJ potential energy. This problem has a simple mathematical form Minimize subject to Where ,is the coordinates ofatom. This paper is to minimize the L-J potential on ,where n = 3N. however it is a challenging and diffcult problem for many optimization methods when N is larger. This paper presents an effective mathematical optimization algorithm for minimizing the LJ Potential and a series of elegant optimal solutions of atoms up to 310 were got.
Design and Implementation of Hainan Tourism Spots Virtual Reality System
Authors: Wang Feng Xia
Published: April 2011

The approval of Hainan International Tourism Island Strategy gives a good opportunity to Hainan and Hainan tourism industry. The result of construction has to be shown to the world. How to show the results with a visual and image way is significant to the evaluation and identification of International Tourism Island results. Hainan Tourism Spots Virtual Reality System is the crystallization of virtual reality technology, geographic information systems technology and high-tech integrated application, which itself is advanced, novelty, strong-function, good- showing and new means of expression. The system not only is the display platform and the management platform, but also is the propaganda platform embodying the innovative thinking of policy makers, decision-making and leadership of tourism spots construction.
The Study on the Network Teaching Mode of Tourism Management in the Background of Hainan International Island Construction
Authors: Wang Feng Xia , Fan Shi Chen
Published: April 2011

With the raise of strategy on Hainan international tourism island ，the personnel training of Hainan's high level tourism management has become an important topic among the Hainan universities. Firstly, this paper analyses the demand trend of the teaching of Hainan's high level tourism management affected by the construction of Hainan international tourism island; dissects the current situations and problems of the Network Teaching of Hainan high level tourism management. Concentrated on these problems, this paper discusses deeply about the terrace, steps and traits of the Network Teaching mode of Hainan tourism management in the background of Hainan international tourism island .And then, to summarize the strengths compared with the traditional teaching methods.
(2,1)-Total Labelling of Trees
Authors: Sun Hai Na
Published: April 2011

Suppose thatis a tree with. We know that .is called type 1 ifand type 2 if. In this paper, we give a sufficient condition for a tree withto be type 1.