bluuebunny/crossref_metadata_2025 huggingface dataset:
Artificial Olfactory System Technology on Chicken Freshness Detection
Authors: Chen Dong Hui , Ye Shao Bo , Weng Xiao Hui , Tong Jin , Chang Zhi Yong
Published: November 2013

To detect the freshness of chicken quickly and accurately with non-destructive, in this paper, the gas-sensitive sensor array has been optimized according to the odor of chicken and the sensor experiment. gas sensors combinations of TGS2600 TGS2610 TGS2611 TGS2620 and TGS2442 were selected and combined to establish new sensor array,The outcome of biological olfactory research has been used to design a bionic gas collection chamber. We have also adopted RBF neural network as a pattern recognition method. The fact that the accuracy of chicken freshness detection using the system is physically and chemically proved to be 96% demonstrates the feasibility of making use of artificial olfactory system to detect chicken freshness.
Culturing and Bonding of Diatom on a Microfluidic Chip for Biosensing Application
Authors: Cai Jun , Pan Jun Feng , Chen Ming Li , Wang Yu , Zhang De Yuan
Published: November 2013

In order to fabricate biosensors with high sensitivity, the diatom Coscinodiscus excentricus was cultured on a microfluidic chip made with polydimethylsiloxane (PDMS), then the organic matter of diatom cells was removed and only diatom frustules were left, after which the cleaned frustules were bonded onto the bottom of the PDMS micro chamber by ultraviolet irradiation. The overview and the detailed morphology of the frustules in the chamber were analyzed by SEM, and the ultraviolet irradiation bonding mechanism of diatom with PDMS was discussed. Finally, the diatom based microfluidic chip was tested with the fluorescein-labeled protein; and the result showed that the fluorescence intensity of the diatom is 4 times stronger compared with that of the blank regions.
Color Image Processing and Self-Localization for a Humanoid Soccer Robot
Authors: Hong Wei , Zhang Yan Hui , Tian Yan Tao , Zhou Chang Jiu
Published: November 2013

The paper proposed a series of image processing algorithm to recognize the evidences in an image accurately for humanoid soccer robot, such as color image segmentation based on HSV model, edge detection based on four linear operator, field straight line extraction by Hough transform based on 8-neighbhour connected domain clusters and identification of line intersection shape based on Hopfield network. Based on evidences from image processing, Piecewise Monte Carlo localization is presented to solve kidnap problem so that localization of humanoid robot can be not only adapt to rule changes for competition, but also be more efficient and robust. The effectiveness of the piecewise MCL is verified by RoboCup Adult Size humanoid soccer robot, Erectus. The experimental results showed that the humanoid robot was able to solve the kidnap problem adaptively with two strategies: resetting or revising, in which resetting was more efficient than revising gradually.
Simulation and Experimental Study of the Direction Control Based on the Torque Compensation of a Snake Robot
Authors: Zhang Dan Feng , Wu Cheng Dong , Li Bin , Wang Ming Hui
Published: November 2013

Because the direction goals of the snake robot are different in applications, e.g. the target point and target path, the direction control of a snake robot is a challenging problem. We have proposed a control method, which is called passive creeping based on the energy balance. In this paper, the direction of the snake robot which is controlled by the passive creeping control method is discussed. A new direction control method which is based on the torque compensation is proposed. The direction control method set a universal direction goal for all the applications. The torque of the head joint which leads the locomotion direction is adjusted by the torque compensation. The compensated torque decreases the angle between the direction of the body axis and the expected direction by the exponential decay function. In simulation, the trajectory and the angle express the process of direction adjustment. The error analysis proves the validity and adaptability of the proposed direction control. Also the validity of the proposed method is proved by the experiment which is based on the virtual/physical mixed experimental system.
Development of Real-Time Look-Ahead Methodology Based on Quintic PH Curve with G2 Continuity for High-Speed Machining
Authors: Shi Jing , Bi Qing Zhen , Wang Yu Han , Liu Gang
Published: November 2013

Curving tool paths composed of straight lines, which are often represented as G01 blocks, are still the most widespread format form in the machining process chain of CAD/CAM/CNC. At the junctions between consecutive segments, the tangency and curvature discontinuities may lead to feedrate fluctuation and acceleration oscillation, which would deteriorate the machining efficiency and quality. In this paper, a real-time look-ahead interpolation methodology is proposed, which adopts a curvature-continuous PH curve as a transition to blend corner at the junction of adjacent lines in the tool path. The blending algorithm can guarantee the approximation error exactly, and the control points of the curve can be calculated analytically. On the other hand, the arc length and the curvature of the transition curve, which are important items in speed planning, also have analytical expressions. All the advantages are the guarantee of calculation efficiency during the interpolation. Except for a curvature-continuous tool path, our look-ahead algorithm adopts a speed planning window strategy to achieve a balance between the calculation capabilities and the real-time interpolation requirements. In this window, the corner transition algorithm and speed planning are implemented simultaneously and dynamically during the interpolation. By defining the width of this window, which is actually the number of linear segments contained in this window, can adjust the time consuming of speed planning. Simulation and experiments on our own developed CNC platform are conducted. The results demonstrate the feasibility and efficiency of the proposed algorithms.
Design and Implementation of Position Locked Control System for Four-Gimbal Platform
Authors: Guo Rong , Zhang Jing Juan , Chen Gang , Liu Ming Yi
Published: November 2013

Gimbals position locked is one of the key issues must be addressed in the platform motor control systems. The paper presents a shaft angle measurement system, control loop based on PWM technologies and simulation model for controller. This system has been implemented on a four-gimbal platform. The experimental evaluation indicate that its steady state error is less than 0.2 degree, settling time is less than 2 seconds and static torque stiffness exceed 3000gcm/rad.
A Comparative Study of Global-Best Harmony Search and Bat Algorithms on Optimization Problems
Authors: Aungkulanon Pasura
Published: November 2013

The engineering optimization problems are large and complex. Effective methods for solving these problems using a finite sequence of instructions can be categorized into optimization and meta-heuristics algorithms. Meta-heuristics techniques have been proved to solve various real world problems. In this study, a comparison of two meta-heuristic techniques, namely, Global-Best Harmony Search algorithm (GHSA) and Bat algorithm (BATA), for solving constrained optimization problems was carried out. GHSA and BATA are optimization algorithms inspired by the structure of harmony improvisation search process and social behavior of bat echolocation for decision direction. These algorithms were implemented under different natures of three optimization, which are single-peak, multi-peak and curved-ridge response surfaces. Moreover, both algorithms were also applied to constrained engineering problems. The results from non-linear continuous unconstrained functions in the context of response surface methodology and constrained problems can be shown that Bat algorithm seems to be better in terms of the sample mean and variance of design points yields and computation time.
A New Five Dimensional Hyperchaotic System and its Fractional Order Form
Authors: Liu Ling , Liu Chong Xin , Liao Yi Fan
Published: November 2013

In this paper, a new five-dimensional hyperchaotic system by introducing two additional states feedback into a three-dimensional smooth chaotic system. With three nonlinearities, this system has more than one positive Lyapunov exponents. Based on the fractional derivative theory, the fractional-order form of this new hyperchaotic system has been investigated. Through predictor-corrector algorithm, the system is proved by numerical simulation analysis. Simulation results are provided to illustrate the performance of the fractional-order hyperchaotic attractors well.
Software Design of College Students' Physical Activity Energy Monitor
Authors: Luo Qi
Published: November 2013

The hardware structure of college students physical activity energy monitor has been designed through electronic circuit method in the previous research. Software Design of college students physical activity energy monitor by using LabVIEW is also proposed. User login module, physiological condition module, movement condition module, diet tracking module, virtual coaches module and other modules are also realized in the paper.
Structure and Magnetic Properties Investigation of CoZr and CoZrN Thin Films
Authors: Singh Jitendra , Singh Arvind K. , Gupta Sanjeev K. , Akhtar J.
Published: November 2013

nanocomposite [(Co91.5Zr8.5)- or CZN films has been prepared by reactive co-sputter deposition method. Nitrogen content plays key role to tune soft magnetic properties. Experimental observation shows that, non-magnetic nitrogen content enhances magnetization and reduces coercivity. The nanostructure is composed of Co nanoclusters embedded in CoN/ZrN matrix, revealed by high resolution transmission electron microscope study. The d-spacing of single Co nanocluster was found to be ~0.22nm corresponding to (002) phase of Cobalt. X-ray diffraction result is in agreement with cubic (400) and (622) phase of CoZr. High electrical resistivity ρs~108μΩ-cm attained corresponding to 16% N2content films. Hysteresis loop squareness depends on film thickness and coercivity squareness (S*)~0.84, obtained for ~250nm film thickness. A correlated composite nanostructure evolution is responsible for nitrogen induced magnetization and, suggests that film properties can tuned by controlling nitrogen content, in CoN/ZrN composite matrix.
Optimization Studies on Flocculant Aided Filtration of Very-Fine Grained Alkaline Leach Slurry Using Central Composite Rotatable Design
Authors: Serajuddin Mohd , Sreenivas T.
Published: November 2013

This paper discusses filtration behavior of very-fine grained alkaline leach slurry containing dissolved uranyl carbonate using commercial flocculants and dewatering surfactants. Evaluation of the best combination of flocculant and surfactant was made on the basis of capillary suction time (CST) data. Addition of INDFLOC 477 and CTAB to the alkaline leach slurry reduced the CST to 17 seconds from a very high level of 177 seconds obtained without the addition of any filtration aids. Detailed optimization of critical parameters like dosages and temperature of filtration were carried out on INDFLOC 477 and CTAB reagent combine adopting central composite rotatable design of experimentation to obtain maximum rate of filtration with minimum cake moisture. The studies indicated scope of achieving filtration rate of about 695 kg/h.m2 with 23% cake moisture upon addition of 167 g/t of INDFLOC 477 and CTAB at filtration temperature of 600 C.
Surface Modification of Titanium Dioxide Thin Film for ss-DNA Detection
Authors: Nadzirah Sharipah , Hashim Uda
Published: November 2013

This paper studies the Capacitance-Frequency of titanium dioxide (TiO2) thin film-based interdigitated electrodes (IDEs) for ss-DNA immobilization. TiO2thin film was deposited on P-type silicon dioxide (SiO2) (1 0 0) substrates using monoethanolamine (MEA) sol-gel route by spin-coating method. Titanium butoxide was used as a precursor source while ethanol and MEA were used as a disperser and stabilizer respectively. Metal IDEs of aluminium (Al) was deposited on the synthesized films for the electrical characterization. From the electrical data, it proves that the synthesized TiO2thin film is effective and can be used for the synthesis of TiO2thin films with biomedical application.
Synthesis and Film Investigation of Titania
Authors: Nadzirah Sharipah , Hashim Uda
Published: November 2013

Titania or titanium dioxide (TiO2) thin film has been synthesized via sol-gel method with monoethanolamine (MEA) as a catalyst. The mixing of titanium butoxide as a precursor, ethanol as a solvent and MEA were stirred using magnetic stirrer under ambient temperature [. The TiO2solution prepared then was deposited on SiO2substrates using spin-coater and the coated films were annealed at 600°C. Finally, both before and after annealed TiO2thin films were characterized using Field Emission Scanning Electron Microscopy (FESEM). The obtained results show the different TiO2particles formation before and after annealed.
Performance Investigation of a Plate Heat Exchanger Using Nanofluid with Different Chevron Angle
Authors: Elias M.M. , Rahman Saidur , Rahim N.A. , Sohel M.R. , Mahbubul I.M.
Published: November 2013

Plate heat exchanger with chevron angle has higher heat transfer area than flat type and increases the level of turbulent due to its corrugated channel. In this study, both water and nanofluid were used to determine the heat transfer coefficient and rate, pumping power, and pressure drop. A commercial plate heat exchanger with two different symmetric (300/300,600/600) and one mixed (300/600) chevron angle plates were considered for analysis. Al2O3and SiO2nanoparticles with 0-1 vol. % concentration were used with water. From the analysis it was found that, convective heat transfer coefficient, heat transfer rate, pressure drop and pumping power increases with the increase of volume concentration. Moreover, the above parameters were found to be higher for 600/600chevron angle plates. A correlation of Nusselt number as a function of Reynolds number and Prandtl number for different chevron angles needs to be obtained based on experimental and analytical work. Nomenclature
Utilization of Soft Computing Techniques in Sputtering Processes: A Review
Authors: Sabri Norlina M. , Puteh Mazidah , Rusop Mahmood Mohamad
Published: November 2013

This paper presents an overview of research works on the utilizing of soft computing in the optimization of process parameters and in the prediction of thin film properties in sputtering processes. The papers from this review were obtained from relevant databases and from various scientific journals. The papers collected were published from 2008 to 2012. The focus of the review is to provide an outlook on the utilization of soft computing techniques in sputtering processes. Based on the review, the soft computing techniques which have been applied so far are ANN, GA and Fuzzy Logic. The first finding of this review is that soft computing technique is a promising and more reliable approach to optimize and predict process parameters compared to the traditional methods. The second finding is that the utilizing of soft computing techniques in sputtering processes are still limited and still in exploratory phase as they have not yet been extensively and stably applied. The techniques applied are also limited to ANN, GA and Fuzzy, whereas the exploration into other techniques is also necessary to be conducted in order to seek the most reliable technique and so as to expand the application of soft computing approach. Future research could focus on the exploration of other soft computing techniques for optimization in order to find the best optimization techniques based on the specific processes.
Evaporated Ethanol as Precursor for Carbon Nanotubes Synthesis
Authors: Nurulhuda I. , Poh R. , Mazatulikhma M.Z. , Rusop Mohamad
Published: November 2013

Single-walled carbon nanotubes (SWCNT) were synthesized by using a simple evaporating method and a double furnace system. Ethanol was chosen as a carbon precursor because it has an evaporating temperature of 78 °C and was reported to produce a high purity of CNTs. Evaporated ethanol can be used as a precursor for carbon nanotubes (CNTs) synthesis. Ethanol was evaporated at 80 °C and channeled directly into a double furnace system. Furnace 1 was maintained at 180 °C and furnace 2 was set at 700 °C, 800 °C and 900 °C. The CNTs were then characterized by thermogravimetric analysis (TGA), field emission scanning electron microscopy (FESEM) and Raman spectroscopy. Helical CNTs were observed at 700°C, webs of hollow tubes at 800 °C, and long tube structures at 900 °C based on FESEM. The diameter of CNTs that were synthesized ranged between 54 - 200 nm. Raman spectrum revealed that the G-band was 1590 cm-1 and the D-band was about 1350 cm-1. SWCNT was determined by RBM (radial breathing mode) to be between 200 - 300 raman shifts (cm-1). The modified CVD (chemical vapor deposition) system set up in the present study is successfully used for large scale synthesis of CNTs from an aqueous precursor such as ethanol.
Thickness Dependency on Dielectric Property of Lead Titanate Thin Film
Authors: Zainal Nurbaya , Zulkefle Habibah , Rusop Mohamad
Published: November 2013

Previous studies have shown that lead titanate (PbTiO3) with its full potential brings out the ferroelectric property provided by its perovskite structure. It was predicted that from origination to become a modified lead titanate is most preferable, i.e. lead zirconium titanate (PZT). In the present study, PbTiO3 thin films were made through a simple sol-gel method by using spin coating technique. The deposition of thin films was at constant rate, 100rpm/s and took about 25s to complete. The fabricated thin films were then annealed at different temperature. After that, the films thickness measurement was taken by surface profiler (KLA Tencor) and characterization on dielectric property comprised at different anneal temperature. This feature indicates the power loss that will be taken into account under ac condition. The measurement of thin films was executed at 1Hz to 1MHz by using impedance spectroscopy analyzer (Solartron S1 1260A-1296) and electrical part was measured by solar simulator (BUKOH KEIKI EP-2000).
Negative Pattern Scheme (NPS) Design for Nanowire Formation Using Scanning Electron Microscope Based Electron Beam Lithography Technique
Authors: Md Nor Mohammad Nuzaihan , Hashim Uda , Abdul Rahman Siti Fatimah , Adam Tijjani
Published: November 2013

In this work, we report the used of Negative Pattern Scheme (NPS) by Electron Microscope Based Electron Beam Lithography (EBL) Technique in connection with scanning electron microscope (SEM) for creating extremely fine nanowires. These patterns have been designed using GDSII Editor and directly transferred on the sample coated with ma-N 2400 Series as the negative tone e-beam resist. The NPS designs having line width of approximately 100 nm are successfully fabricated at our lab. The profile of the nanowire can be precisely controlled by this technique. The optical characterization that is applied to check the nanowires structure using SEM and Atomic Force Microscopy (AFM).
Enhanced Antioxidant Activity in Wet Mill Nanostructured Zingiber officinale (Ginger) Rosc Rhizome
Authors: Norhidayah A. , Noriham A. , Rusop Mohamad
Published: November 2013

In this study, the effect of nanonization on antioxidant activity of Zingiber officinale(ginger) Ross rhizome prepared using a wet milling process were investigated. The antioxidant activity was estimated based on the Total Phenolic Content (TPC) and Total Flavonoid Content (TFC) and measured using FRAP, ABTS and DPPH assays. Particle size of the initial ginger rhizome (approximately 20μm) was successfully reduced to 222.3 nm after the wet milling process. Higher degree of granules surface destruction occurred as a result of nanonization process based on FESEM image. Findings revealed that nanostructured ginger (NG) had the highest TPC and TFC which were 946.43 mgGAE/g and 20.16 mgQE/g followed by submicron ginger (SM) (712.68 mgGAE/g; 16.22 mgQE/g) and micron ginger (MG) (700.89 mgGAE/g; 14.45 mgQE/g) of dry matter respectively. Moreover, NG rhizome showed around 30 to 40% (p<0.05) greater radical scavenging activity as well as ferric reducing antioxidant power as compared to the other samples tested. The antioxidant activity was in the following in sequence: NG>SM>MG. Hence it can be concluded that reduction of particle size of ginger rhizome into nanoparticles using a wet milling process enhanced its antioxidant activity as compared to micron and submicron particles.
Simulation of Nano Sensor Based on Carbon Nanostructures in Order to Form Multifunctional Delivery Platforms
Authors: Yousefi Amin Termeh , Ikeda Shoichiro , Rusop Mohamad , Yousefi Haleh Termeh
Published: November 2013

Carbon nanostructures demonstrate a perfect combination of mechanical, electrical and electro chemical properties.Different approaches can improve the selectivity and sensitivity of CNT-modified electrode through immobilization of enzymes. In this research, simulation of SWCNTs attached sensor for medical application was described.Glucose oxidase was immobilized on the surface of the CNT using microencapsulation technique with non covalent bindings which has a negligible effect on the native biological activities of the enzymes. The main advantage of the Micro-encapsulation is that the entrapped particles often maintain its nature bioactivity. ABAQUS and ANSYS are the softwares which used to certify the results of experiments. Boundary conditions were selectivity detected according to the redox reaction center of enzyme and electrode surface. The results of the simulation indicate the ability of CNT to penetrate into the cells which offers the potential of using CNT as vehicles for the delivery system. Furthermore, encapsulated CNT attached sensor can work as a stress sensor simultaneously. Simulation was focused on measuring physical properties of CNTs, such as Mass, velocity, capacity and stress before and after immobilizing of GOx.
Influence of Chemical Structure on Wetting Property of Down Fibers
Authors: Gao Jing
Published: November 2013

Fourier transform infrared spectroscopy was used to investigate the chemical structure of down fibers in this paper. Contact angle was calculated to determine the wetting property of down. Experiments demonstrated that the surface chemical structure affected the fiber wetting property strongly. The surface substance by FTIR was forecast to be the mixture of sterol and triphosphate ester. After Soxhlet-extracted the fibers contact angle increased greatly.
Change of Leaf Morphology along Altitudinal Gradients
Authors: Kong Hai Yan , Chen Rou Xi , He Ji Huan , Mo Lu Feng
Published: November 2013

It is the most effective way to study the effect of global warming on plant morphology by analyzing a plant species on a mount along altitudinal gradients. Altitudinal increase means decrease of temperature and metabolic rate as well. This might affect the leaf morphology greatly. The SEM study reveals that the size of nanopore on the epidermis changes gradually along altitudinal gradients, and the absorbed fine particles on the leaf have almost same size, exhibiting high selectivity over other particles. The study gives a strong proof that morphology change links to global warming.
A Column Orthogonality Space-Time-Frequency Coding Schemes
Authors: Shao Chao , Xu Cun Yao , Shi Xin
Published: November 2013

A column orthogonal space-time-frequency coding scheme is presented, its induced cost207 transmit environment channel matrix has greater determinant value, which will lead result in amplifying the signal-to noise ratio of system, and improving the performance of the system. Computer simulations confirm the theory of the article.
The Software Design of Camellia Oleifera Seed Hyperspectral Detection System
Authors: Xiong Zhong Gang , Luo Su Lian , He Juan
Published: November 2013

In this paper,The software design of oleifera camellia seed hyperspectral detection system is completed based on visual Basic6.0, which firstly reads hyperspectral file ( the TXT file after ViewspecPro professional software ), and selects the effective hyperspectral data. Then it needs to make the pretreatment and extraction of sensitive bands for hyperspectral data, and finish the content detection of oleifera camellia seed fatty acid oleic acid, linoleic acid, and palmitic with sensitive bands hyperspectral data and the Hyperspectral model. Finally, it needs to store the results are analyzed. It realizes the method that simple, real-time and fast detection on the content of fat acid composition of oleifera camellia seed.
Ship Detection Algorithm Based on Visual Cognition
Authors: Hu Xiao Guang , Cheng Cheng Qi , Li De Ren
Published: November 2013

In this paper, according to the phenomenon that the retina will strongly respond to large contrast visual stimulation and the generation mechanism of visual information in the primary visual cortex, we propose a method generating saliency map and detecting ship objects in satellite optical images. The method can detect significant contrast objects without considering the shape, edge or other forms of prior knowledge of the objects. In ship detection experiment, the results show the detection method based on visual contrast can effectively concentrate on the objects with greater contrast and achieve good detection results.
An Evaluation Method of Water Quality Based on Improved PSO-BP Network
Authors: Liu Zuo Jun , Li Li Hong
Published: November 2013

Because of the existing problems of BP network: easily falling into local minimum point, slowly converging and generalization ability can not be guaranteed, the evaluation method of water quality based on BP network is not satisfactory. Therefore, an algorithm of improved particle swarm optimizing is used to optimize the BP network. On the basis of this, an evaluation method of water quality based on improved PSO-BP network is designed. Proved by experiments, the BP network optimized by improved PSO is stable. So, the performance and efficiency of the water quality evaluation based on improved PSO-BP is pretty good.
An Improved Simplified-CE Stopping Criterion for BICM-ID System
Authors: Li Miao Miao , Li Jian Ping
Published: November 2013

Bit-interleaved coded modulation iterative decoding (BICM-ID) is an excellent bandwidth efficient transmission scheme,which owns remarkable bit-error-rate (BER) performance both in additive Gaussian noise (AWGN) channel and Rayleigh fading channel.But it leads to the increase of computational complexity and decoding delay at the receiver at the same time. In order to decrease the unnecessary iterations ,a variety of the stopping criteria are put forward . This paper presents an improved simplified cross-entropy (CE) stopping criterion based on Simplified-CE criterion, which calculates the value of CE just one time when Signal to Noise Ratio (SNR) is under 2dB to simplified the iterative process. Simulation results show that the improved Simplified-CE criterion can own the least iterative number when the SNR is under 2dB.And when the SNR is from 2.5dB to 4dB, it is about 12% less than CE criterion in the average iterative numbers.
Data Processing Modeling for Reference Materials Preparation
Authors: Zhang Ting , Gu Jia Li
Published: November 2013

This paper focuses on the data processing modeling for reference materials preparation. By analyzing the data of reference materials (RMs), the process of repeatability and stability verification, uncertainty estimation, traceability of the value of a quantity and the characterization of RMs are detailed in the paper.
Energy Balance Routing Protocol Based on Location Information
Authors: Zhang Deng Yin , Xie Zhen Wei , Cui Guo Dong
Published: November 2013

For the current routing algorithm based on the geographic location information, the energy consumption is high and uneven. To address the problem, we propose an energy balance routing protocol (GEBR) based on the geographical location information, using a virtual sink technology to balance the node energy consumption within the scope of gateway communication. Simulation results show that compared with GEAR protocol, the GEBR protocol postponed the generation of energy hole, balanced energy consumption, effectively prolong the network lifetime.
Using Meta-Programming Technology to Parse ipv6 Protocol Suite
Authors: Wang Zhen Qi , Huang Jin Chao
Published: November 2013

As the ipv6 protocol stack constantly updated, more and more protocols let to compile parsing codes for each protocols individually is not only huge workload and easy to make mistakes, but also poor reusability and difficult to maintain. Addressed this situation, this paper proposes a method based on the technology of meta-programming to implement a flexible protocol stack parsing program with the ease of expansion and modification.
Discussion and Analysis of Business Model of Cloud Computing
Authors: Cheng Cong , Chen Ai Qing
Published: November 2013

This paper analyzes the service modes, typical models at home and abroad, and the subjects of key nodes of the industrys most popular cloud computing. As the IT industry will enter the cloud computing era from the PC-centric Internet era, enterprises, institutions and colleges shall get fully prepared in advance.
Design on Framework Structure of College English Learning Management System Based on Struts2
Authors: Li Yan Ming , Wang Li Feng
Published: November 2013

Traditional teaching management mode can't meet the needs of the teaching management information age, to develop the management system of college English learning, is the extension and expansion of conventional English teaching in English teaching and the inevitable requirement to improve the quality of English teaching. Aiming at the existing problem of system development, this paper makes research on the frame structure. First of all, the research consists of eight functions to complete the whole learning process management function framework; then, study on the technology framework is composed of model, view and controller, design concept is decoupling performance logic and business logic through controller; Finally, the work principle of the struts2 framework, and the working process is described. In this paper, the research content, improve the labor productivity of software development, changed the traditional mode of software development, plays an important role in improving college students' English level.
An Improved SIP Security Mechanism of Softswitch Network
Authors: Mao Jiang Kun , Xu Yu Feng
Published: November 2013

This paper introduces a typical softswitch network system, points out the security threats of SIP softswitch network that may exist, select suitable HTTP digest authentication mechanism for softswitch network in the analysis of the SIP security mechanism. For the deficiencies of HTTP digest authentication, by extending SIP message header field contents, learning SRTP and other methods to improve it. Improved HTTP digest authentication mechanism can effectively avoid the server camouflage, registration hijacking, message tampering and other security threats, to ensure the security of SIP protocol application layer, improved security of softswitch network.
NS2-Based Black Hole Attack Modeling and Simulation of Ad Hoc Network
Authors: Ding Yuan Ming , Qu Hao , Wang Xue
Published: November 2013

Taking the AODV protocol as an example, the attack characteristics of different types of black holes are analyzed. Then, an attack model of black hole is established. Finally, the effects of black hole attacks to network performance are analyzed by simulations in different types and intensities. The simulation results show that this model can accurately simulate the impact of black hole attack on network performance and can provide reference and corresponding simulation environment for the security research of Ad Hoc network.
Application of the Agent-Based Ontology Matching Technology in the Relational Database
Authors: Ding Jian Long
Published: November 2013

As the relational database be the main data storage mode, but the traditional keyword based syntactic matching defects in precision and recall. This paper provides a ontology matching mechanisms for relational database, which realizes the semantic level of the data retrieval by using the intelligent search technology from Agent and Ontology. The mechanism using DCL domain ontology, SQC services query policy, SearchPolicyMap mapping to solve the problems as data object description, retrieval conditions description, and the mapping between those two description. And provided the preconditions for the semantic matching under the relational database. Solve the semantic matching problem of interaction between human and Agent by the WI interface and CM mechanism . Solve the problem of interaction between Agent and relational database by the service customization Interface SBI. Finally, solve the problem of semantic retrieval and quantitative calculation by querying adapter QA and core algorithm CMA. The mechanism has a strong practicality and application domains independent. Can implement a specific level semantics of relational database retrieval through the application domain ontology creation and mapping configuration.
Database Design on Intelligent Test Paper Composing System of College English Online Examination
Authors: Li Rui
Published: November 2013

College English is students public courses who dont major in English. The traditional examination mode has many defects, so online examination is the future, intelligent test paper composition is an important part of online examination, in this paper, according to the characteristics of College English test, design database on intelligent test system. Firstly, make t requirement analysis about the test, user, and algorithm; then, use entity relationship model to design the concept based on the analysis; finally, make the logical structure design, following the design principles for the logical structure of the meter, and the result is the table structure 10. The content of this paper has important application value for the construction of College English online examination management system, promoting the scientific and standardization of teaching management.
Chinese Web Page Classification Based on Vector Space Model
Authors: Wei Li , Zhang Ling , Li Hua Mei , Chen Xiao Zhou
Published: November 2013

Chinese web page classification has been considered as a hot research area in data mining. In this paper, Chinese web page classification algorithm based on vector space model is proposed. This algorithm makes use of supervised machine learning theory to implement a web page classifier. It combined text frequency and methods for feature extraction and improved traditional TFIDF weighting formula. The results show that the classifier was feasible and effective.
The Application of BP Algorithm in Electronic Load Current Control
Authors: Jiang Gui Xiu , Jie Shu
Published: November 2013

The current control method based on double hysteresis current control and space vector is taken, so that the current tracing control of three phase VSR can realized. The predictive current control based on BP algorithm is presented, and the drawback that there is beat during the control of SVPWM based on hysteresis can be made up, which has serious influence on the current tracing when the difference value changed violently. Without the rise of sampling frequency, the reference offset current of next time is predicted using of historical current. The simulation results show that the predictive current control based on BP algorithm is correct and valid. The deadbeat control of SVPWM based on hysteresis is realized, less harmonic current and better tracing are got.
The Study on the Key Technologies in Multiple Agent-Based Intelligent Tutoring System
Authors: Yu Yan , Wang Jian Hua
Published: November 2013

Network teaching system has changed the way of teaching, with the artificial intelligence technology, Currently, many traditional network teaching system has been unable to meet the needs of the public.After studying the defects in current teaching systems and combining features of multi-agent systems and their application theories in intelligent teaching systems, this paper, integrating the concept of multi-agent systems, discusses the key technologies in multiple agent-based intelligent tutoring systems based on multiple agent-based intelligent tutoring system models. To achieve true intelligent teaching system, simulate real teaching environments, offer customized teaching services, and really realize students' independent learning and collaborative learning.
Simulation of Absorbing Properties of Co-Doped ZnO Based on Density Functional Theory
Authors: Li Teng , Pan Hong Liang , Yang Shi Liang
Published: November 2013

Based on first-principles method of density functional theory, the electronic structures and absorbing properties of pure ZnO system and Co doped ZnO have been calculated. Meanwhile, the relationships between electronic structures and absorbing properties are investigated. The results show that the absorbing properties of Co doped ZnO improved significantly compared to pure ZnO system. Absorption frequency peak moves to low frequency and two absorption band appear at 425.6nm and 802.7nm, combining the absorbing properties of experimental results of Co-doped ZnO. The theoretical results have offered theoretical data for the designing and application of of ZnO which is a new type of wave absorbing material and is subjected to an extensive concern. Meanwhile, the calculated results also enable more precise monitoring and controlling during the growth of ZnO material.
Approximate Finite-Time Stable Control for Simple Interconnected Power Systems
Authors: Zhao Jian Li , Yan Bao Feng , Chen Bo
Published: November 2013

Considering the simple interconnected power systems, the finite-time stable control problem is studied. A nonlinear feedback control method with dynamic active compensation is proposed, which makes the systems achieves approximately the finite-time stable control. Meantime, in order to solve the problem of system uncertainty and unmeasurable states, an extended state observer is designed. Simulation results show the effectiveness of the control method.
Intelligent Information of TS Fuzzy PID Control System of BLDCM
Authors: Zhang Xiao Yun
Published: November 2013

This paper presented a new method based on the Fuzzy self - adaptive PID for BLDCM. This method overcomes some defects of the traditional PID control. Such as lower control precision and worse anti - jamming performance. It dynamic model of BLDCM was built, and then design method for TS fuzzy PID model is given, At last, it compared simulation results of PID control method with TS Fuzzy PID control method. The results show that the TS Fuzzy PID control method has more excellent dynamic antistatic performances, as well as anti-jamming performance. The experiment shows that TS fuzzy PID control has the stronger adaptability robustness and transplant.
Research on the Hardware-in-the-Loop Simulation for High Dynamic SINS/GNSS Integrated Navigation System
Authors: Lei Hao Ran , Chen Shuai , Chang Yao Wei , Wang Lei Jie
Published: November 2013

In the process of developing guided munitions, ground test can only verify the performance of integrated navigation system in low dynamic condition, and its costly and risky to use means of authentication such as flight test and throw experiment. This paper proposes a kind of hardware-in-the-loop simulation (HILS) scheme with tri-axial turntable for verifying the performance of navigation system in high dynamic condition. It respectively uses quaternion method and four-sample rotation vector algorithm as attitude updating algorithms for comparison. On the basis of analyzing the characteristics of some tactical missile and the HILS system, the error sources of integrated navigation system in the simulation with turntable and that without turntable are discussed in detail. The results of HILS show that integrated navigation system is of good performance under high dynamic environment; moreover, for the fiber optic gyroscope (FOG) inertial measurement unit (IMU) which outputs angular rate, quaternion method is better than four-sample rotation vector algorithm.
Research on Service Impact Analysis for Power Communication Network Based on N-1 Principle
Authors: Yan Sheng Chao , Qi Juan
Published: November 2013

In order to realize impact analysis for power communication service, we introduce service-concerned resource models, on which we based to present a new method for service impact analysis as well as a classification for service impact type and impact degree, combining the intersection theory with fault tree method. As applications, we managed to implement this model and method for N-1 service impact analysis in case of fault alarm, cracking performance and maintenance. As an extension, we introduce a brief model for N-x analysis. These implements will improve the intelligent level of power telecommunication service impact analysis.
High-Density Randomly Deployed Nodes Sleep Scheduling Algorithm in Wireless Sensor Networks
Authors: Zhang Dong Qing , Li Deng
Published: November 2013

The high-density randomly deployment of nodes in Wireless Sensor Networks results in a large number of redundant nodes due to the overlap of sensing areas. A scheduling algorithm for redundant nodes is proposed to effectively prolong the lifetime of WSN. The algorithm focuses on employing different scheduling strategies on border nodes and internal nodes to avoid contraction of the network boundary by judging whether a node is on the network boundary according to the number of working nodes in its neighbor table. The simulation results show that the algorithm can effectively prolong the lifetime of the network.
Sensitive Ports under the Action of Different ESD Models of High-Frequency Low-Noise Silicon Bipolar Transistors
Authors: Dong Kang Ning , Zhang Xi Jun , Yang Jie , Yang Zhe
Published: November 2013

In order to find the most sensitive port of some high-frequency low-noise silicon bipolar transistors, some electrostatic discharge (ESD) experiments were taken on three typical devices, which is beneficial to study the relevant law of ESDS (ESD sensitivity). Based on the experimental results, reverse-biased emitter-base junction was compared with reverse-biased collector-base junction about failure voltage under the action of HBM ESD, MM ESD and BMM ESD. The results show that the sensitive port is different for those mentioned silicon bipolar transistors under the action of different ESD models. Consequently, the most sensitive port of high-frequency low-noise silicon bipolar transistors may be variable for different ESD models.
Technical Study on Flue Gas Continuous Emission Monitoring Systems for Power Plant
Authors: Zheng Hai Ming , Guo Tie Qiao
Published: November 2013

Monitoring emissions of air pollution sources has become a complex and contentious issue. Regulations for continuous monitoring of these sources have expanded dramatically in scope over the past years. To demonstrate compliance with emission limits, and as required by Pollution Control Board, the power plant shall have a Continuous Emission Monitoring (CEM) System installed in each flue of the stack for each unit. This paper will mainly design a set of CEM system for flue gas from power plant. The measurement shall conform to EPA regulations.
Lifetime Prediction for Power IGBT Modules in Metro Traction Systems
Authors: Wang Yan Gang , Chamund Dinesh , Li Shi Ping , Wu Kevin , Jones Steve , Liu Gary
Published: November 2013

In this work, the methodology and procedures of lifetime prediction for power IGBT modules are presented. Firstly, we discuss the long term reliability tests of power modules for developing lifetime models, and review some reported lifetime models. Then, the procedures of lifetime prediction in real applications are addressed, which include power loss calculations based on the actual mission profile, the conversion of power loss profile to temperature profile according to the module's thermal properties, the temperature cycles counting by Rainflow algorithm, and lifetime calculation by the fatigue linear accumulation damage theory. Finally, the lifetime of a 3300V/800A IGBT module manufactured by Dynex Semiconductor of China Southern Railway applied in metro traction systems is predicted.
A Cascading Invulnerability Analysis for Multi-Layered Networks
Authors: Peng Xing Zhao , Li Bi Yue , Yao Hong
Published: November 2013

A cascading failure model for multi-layered networks is established using the Coupled Map Lattices (CML) method, the invulnerability of multi-layered network under random attacks and intentional attacks is investigated. The simulation results show that compared with isolated networks, multi-layered networks are more fragile and dont exhibit the invulnerability to suppress cascading failures under random attacks. Furthermore, we find that decreasing the inter-layer coupling strength or enhancing the inner-layer coupling strength can significantly improve the invulnerability of the multi-layered networks to resist cascading failures.
Synthesis of Mine Hoist Speed Curve Based on Programmable Logic Controller
Authors: Yang Zhan She , Ma Xian Min
Published: November 2013

Actual coal mine as the background,used the method based on travel control and time control in the paper,using the programmable controller design of mine hoist S curve is given.at the same time, using the programmable controller and PC communication,The curve of the actual operation results show that in the upper machine,the results show that is correct.
Optimization of Processing Factors for Particleboard Manufacturing Using Waste Tire Rubber Crumbs and Wood Particle
Authors: Sangsai Naratip , Laemlaksakul Vanchai
Published: November 2013

This research aims at studying the parameters of particleboard manufacturing using waste tire rubber crumbs and wood particle, mechanical and physical properties of the composite panel according to standard JIS. A5908-2003: Particle Board. Analysis of Covariance with the cofactor (Covariance) of a piece of wood density at different levels of statistical significance (α = .05) and determine the appropriate level of mechanical and physical properties. The total amount of waste tires was composed of 5% urea-formaldehyde 13% in compression at 5 minutes, and the density of the material less than 868.88 kg/m3. Improvement of the mechanical and physical properties of a piece of particle board was to conform to the international standards.
Welding of Ultra High Strength Steels
Authors: Kah Paul , Pirinen Markku , Suoranta Raimo , Martikainen Jukka
Published: November 2013

The ongoing need to reduce the weight of products while increasing strength has resulted in new generation steel manufacturing using special heat treatments to produce High Strength Steels (HSS) and Ultra High Strength Steels (UHSS) with up to 1700 MPa tensile strength. The high strength level of these steels makes it possible to produce structures with a considerable weight and cost reduction, and such steels have been adopted in the automotive industry and for mobile heavy equipment. Welding of UHSS is, however, not without its complications and welding processes for these steels need careful attention. For instance, their high susceptibility to cracking and Heat Affected Zone (HAZ) softening are risks that need to be borne in mind when choosing welding parameters. This research work discusses the difficulties and challenges of successful welding of UHSS. Common welding methods used in welding of UHSS are briefly reviewed to gain a better understanding of the effects of different welding parameters and methods. The paper finds that UHSS can be satisfactorily welded with laser welding, electron beam welding, resistance welding, and conventional arc welding methods, but the quality of the weld is dependent on appropriate control of several parameters and variables of the welding processes.