bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation on Evaluation of Terminal Departure Capacity Based on Route Intersection
Authors: Kong Jian Guo
Published: March 2013

Air traffic flow management is the key to evaluate airspace capacity reasonably and accurately. Based on the flight features of terminal route intersection, this paper builds a mathematical model for scattered flight of departure aircraft, and then evaluates the terminal capacity based on this model. By combining data from Flight Data Recorder (FDR) and flight schedule with the model, an example-runway 02R of Guangzhou Baiyun airport terminal was given to show the effectiveness of the proposed model.
The Two-Step Pricing Strategy Research of Regional Logistics Information Platform Based on Game Theory
Authors: Yu Zhao Zhao , Ji Shou Wen
Published: March 2013

The paper establishes a two-step pricing strategy of regional logistics information platforms model based on Game Theory. Then it gives the basic membership fee pricing strategy and the usage fee pricing strategy based on Staekelberg Strategy.
Research on the Bogie Maintenance for the Safely Running of Passenger Car
Authors: Gao Yuan Kui , Li Zhong Ji
Published: March 2013

The passenger cars bogie maintenance overview is described of domestic and international; the maintenance process of the bogie is analyzed mainly. The characteristics and maintenance requirements are summarized. The influence of the fault of the wheels, the foundational brake system and the suspension system on the running security is calculated based on the simulation analysis. According to the simulation result, the recommendations for developing the maintenance process of the key components are proposed considering the engineering experience in the use of the common passenger cars.
Research of Asymmetric Quality Loss Function with Triangular Distribution
Authors: Jin Qiu , Liu Shao Gang
Published: March 2013

The asymmetric quality loss functions with the triangular distribution for determining the optimum process mean are studied. The condition of using the linear and quadratic asymmetric quality loss function in the model is considered. The eight mathematical models under an asymmetric quality loss function with the triangular distribution based on the analysis of the linear and quadratic asymmetric quality loss function are presented. Finally, the validity of models is verified by the examples.
Case Study on FMECA and Risk Assessment for the Door System in High Speed Train
Authors: Lu Bi Hong , Hua Peng , Fu Zhen Liang , Gao Feng
Published: March 2013

Based on the FMEA and risk assessment analysis method, authors proposed 25 kinds of failure modes about the door system of high-speed train, conducted a risk assessment from the risk grade and criticality. Four kinds of failure modes are obtained with the highest level of risk and criticality in the door system of high-speed train. They are control failure, communication failure, compensator failure and poor function. Four key components, affecting the door system safety of high-speed train, are identified in terms of door control unit, driving device, locking mechanism and platform compensator. Research outcomes can be used in analyzing the failure causes and specific solutions to reduce and avoid the high-speed train operation risk.
Equilibrium Strategies of Contract Choice Game between Supply Chains with Uncertain Demand
Authors: Li Bai Xun , Wei Qi , Zhou Min
Published: March 2013

Applying competing newsvendor model, we studied the contract choice games between supply chains, each consisting of one manufacturer and one retailer. We investigated the effect of the competition intensity on the equilibrium strategies of contract choice games. It can be found that, counter to the earlier literature, in the context of competing supply chains, the choices of quantity-discount contracts are the Nash equilibrium structure for both manufacturers, however, the manufacturers will get into classic prisoners’ dilemma if the degree of competition intensity is high.
Layout Optimization Base on Election Campaign Algorithm
Authors: Xie Qing Hua , Zhang Xiang Wei , Lv Wen Ge , Lin Chun Tao
Published: March 2013

Waste appliances have become new urban polluter because of the replacing of appliances households and corporates throw away. A case of recycling system of waste appliances in China is on the agenda. As the recycling system process, the layout optimization problem come out, we present a solution by using a new algorithm named Election campaign algorithm (ECA). ECA acts by simulating the behavior that the election candidates pursue the highest support in election campaign. Our comparative study indicates that ECA has good performance in this kind of optimization cases.
Performance Analysis of Bionic Airfoil on the Small Unmanned Plane
Authors: Qiao Li Min , Liu Xue Shan , Yang Yong Bo , Gu Rui , Lu Yong Ji
Published: March 2013

The quality and dependability of the small unmanned plane is more and more important currently. For the small unmanned plane under the conditions of Low-Reynolds, the air viscosity has relatively greater influence on its aerodynamic performance. This is one of the greatest difficulties to design a small unmanned plane. The aerodynamic performance of bionic aerofoil and NACA 4412 is contrastively analyzed while the Reynolds-Number is 、 and by the Fluent. The CFD computational result and the analysis show that the airfoil of the seagull is suitable for the special work circumstances of the small unmanned plane, and it can be used for the further design of the wings.
Thermal Characteristic Analysis on a High Precision Turning Center’s Headstock
Authors: Zhang Yao Man , Gu Ren Jun , Han Jia Liang
Published: March 2013

The performances of the high precision turning center will be influenced by the thermal characteristics of the headstock seriously, and accurately predict thermal characteristics of the headstock are helpful to improve the design level. The headstock of a high precision turning center produced by some plant has been regarded as the research objects of the paper. First the steady temperature distribution and thermal deformation of the headstock were calculated based the finite element analysis models of the headstock. Then the temperature sensitive points of the headstock were obtained by using the grey incidence analysis method. Finally the thermal error compensation model was built by using multiple linear regression method. The study lays a foundation for the thermal error compensation of the headstock of the turning center.
Optimized Design of Structure Parameter of New Fuel Injection System
Authors: Luo Zi Lai , Huang Kang
Published: March 2013

According to the characteristics and the future tendency of common rail systems for marine diesel engines，the paper used a new injector. A simulation model of the common rail system with new injector was established using HYDSIM system, pressure fluctuation of the common rail pipe and pressure loss of the injector as evaluation indicator, the injector was simulated and optimized using DOE method. Simulation results show that appropriate selection of the structure parameters of the injector structure can effectively prevent the injectors from interfering each other and degree pressure loss of injector.
Modeling and Simulation of the Marine Permanent Magnet Synchronous Propulsion Motor with Direct Torque Control System
Authors: Zhang Chun Lai , Zhang Jin Nan
Published: March 2013

New quick-response and high efficiency direct torque control method of Permanent magnet synchronous motor is proposed. The new method is realized by optimizing the switching frequency of the inverter and choosing the most fit voltage space vectors. Modeling and simulating such marine electric propulsion system using Matlab/Simulink is performed. The starting-up and dynamic simulation results prove that this method can be fully used onboard the future all electric ship.
The Layout Optimization for Axial Stiffness of a Flexplate Disk with Weight and Inertial Moment Constraints
Authors: Zhang Da Ke , Wang Chong , Yang Yi Chao , He Han
Published: March 2013

A flexplate is a mechanical component that couples the crankshaft to the torque converter of a car with automatic transmission. A higher axial stiffness is one of significant requirements for it in order to ensure its performance. In this paper an optimum design of the flexplate disk is described that maximizes the axial stiffness of the flexplate disk with weight and inertial moment constraints. The strategy for optimizing the layout of the disk is to perform topology optimization first then position optimization. The relation is presented which shows the variation of axial stiffness with respect to changes of the number, shape and position of the holes on the flexplate disk. The research shows that the shape of the hole punched on the disk does not affect the axial stiffness greatly. Thus, the manufacturing cost should be considered first in the optimum design of the flexplate disk
Dried Jujubes Online Detection Based on Machine Vision
Authors: Jiang Ji Xiang , Zhou Jian Hua
Published: March 2013

Along with the computer hardware and software to continuously improve and the performance of the price going down, machine vision technology more and more application in agricultural product quality inspection and grading field. The characteristics of the machine vision technology is speed, information and multi-function, can complete the grading of the size, shape, color, defects, and many other. Apples and other fruits at home and abroad are relatively mature, however, due to growing location, dried jujubes machine vision grading is few studied. This article mainly discusses the choice of dried jujubes background and size detection. The results show that at the same time ensure enough in production, sorting accuracy can reach 80%-85% or so. Machine vision also apply to dried jujubes real-time classification.
The Fiber Bragg Grating Sensor and its Interrogator for Dynamic Strain Measurement of Concrete
Authors: Yu Shang Jiang , Yang Ji Xiang , Chen Jin Yang
Published: March 2013

The fiber Bragg grating (FBG) sensor is the most appropriate to measure strain of concrete. Employing a specifically designed FRP package, a FBG sensor for concrete dynamic strain measurement was designed. To interrogate the dynamic response of the FBG sensor, the corresponding interrogator was developed by using a novel reflect wavelength measurement method. A series of tests such as measuring dynamic strain of concrete specimens impacted with drop hammer and split Hopkinson pressure bar (SHPB) were conducted. The results show that the sensor and its interrogator respond rapidly to impact and have a stable performance. The system can be used for a real-time and rapid dynamic strain measurement in concrete dynamic performance tests or weapons effects tests.
Lightning Protection Measures Research on Coal Mine 6kV Distribution Lines
Authors: Wang Yu Mei , Zhang Hao , Yang Xu
Published: March 2013

Use electromagnetic simulation software PSCAD/EMTDC to 6 kV power distribution lines for lightning protection research. Resarch the influence of the different measures for the lightning protection level. Finally get a comprehensive lightning protection program.
An Improved Kernel Principal Component Analysis Based on Chaotic Artificial Fish School Algorithm
Authors: Hu Fang Min , Zhao Hui Ya
Published: March 2013

The feature extraction is a great important step for face recognition. When all features are extracted and selected for face recognition, it results in poor recognition rate because there are too many irrelevant, redundant and noisy features which also increase the time consumption. Therefore, a good feature selection method is necessary. This problem can be regarded as a combinatorial optimization solution. To overcome this problem, An improved kernel principal component analysis based on chaotic artificial fish school algorithm is proposed. The feature subspace of face pictures is obtained by standard kernel principal component analysis where a better feature subspace is selected by improved chaotic artificial fish school algorithm which based on couple chaotic maps increases the diversity of fish, has better global convergence ability and is not easy to fall into local optimum when facing with complex problems. The experimental results show that the proposed method has significantly improved the performance of conventional kernel principal component analysis.
A Particle Pair Optimization Algorithm
Authors: Quan Hai Yan , Liu Zeng Li
Published: March 2013

The paper proposes a particle pair optimization (PPO) algorithm for numerical optimization. In the paper, a particle pair search(PPS) is designed. Based on PPS, the competitive roulette strategy is employed to the selection of particle pair from swarm, and a particle pair optimization algorithm is proposed. In the experiments, PPO is applied to solve the 12 benchmark problem, and compared with fast evolutionary programming (FEP). The results demonstrate that PPO algorithm can find optima or close-to-optimal solutions of the complex functions with high-dimension, and the search of PPO is stable and efficient.
The Template Matching Research Based on Multiple Images Fusion
Authors: Liu Chang Jie , Pi Jia Jing , Ye Sheng Hua
Published: March 2013

Visual inspection has been widely used in the field of automobile industry. On a car production line, we use an online monitoring system to measure the same feature region of a work piece. Traditionally one picture is chosen as the template and used for other target measurements. However, this method tends to causing measurement error. In this paper a new algorithm is proposed which can generate a better template by multiple pictures. The process is as following: we firstly match the feature area; secondly, the gray information of this area is segmented; then after optimizing a new template is finally formed. The experimental results show that the NMSD (Normalized Mean Square Difference) is 0.0047 when we use the old template to match 10 pictures, but with the new one, the NMSD is only 0.0005. These results show that the new template is more accurate and stable.
Structure and Performance of Fe-Al Alloy Layer for Twin Wire Surfacing on the Steel Substrate
Authors: Yu Jin , Huang Yin Zhuo , Wu Bo Wen , Zhou Hou Xian
Published: March 2013

Surfacing of Fe-Al alloy layer is achieved on the surface of Q235 steel plate by using the twin wire consisting of one aluminum welding wire and one steel welding wire in the shielding of pure argon. When the ER1100 aluminum welding wire of Φ1.6mm and ER50-6 steel welding wire of Φ1.2mm are selected as the master wire and slave wire respectively, with preheating and interlayer temperature reaching 350°C by controlling filling volume of aluminum and steel , the Fe-Al alloy layer featured by well-formed welding line is thus gained with no macroscopic defect. As the mechanical performance testing shows, the shear strength of surface combining surfacing layer and steel substrate is higher than 270MPa. The rupture position is located in surfacing layer and it turns out to be brittle fracture; the micro-hardness of surfacing layer ranges from 320HV to 420HV. Abrasion resistance testing indicates that abrasion resistance of surfacing layer is better than that of base material. According to micro-structure observation, the welding line is a coarsening columnar structure with a great deal of precipitated phase. According to EDAX, the aluminum content of precipitated phase in surfacing layer ranges from 24% to 32% (at), and the steel content ranging from 76% to 68% (at) - it is thus considered a Fe3Al structure through XRD.
Optimization on Parameters of Resistance Spot Welding Process for Galvanized Steel Plate
Authors: Wang Zhi Wei , Wang Ya Long , Zhang Dong Dong
Published: March 2013

In order to research welding technology of DX51D+Z cold rolled galvanized steel, using multivariate nonlinear regression orthogonal combination design method, adopted the shear load as quality indicators, counted welding current, electrode force, welding time, squeeze time and the interaction of them as factors, to built the nonlinear regression models, by adopting this model to forecast shearing load. The result shows that this model has high forecast precision.
Study on Nonlinear Cutting Forces Phenomenon of Difficult-to-Machining Materials
Authors: Qiu Kun , Long Zhen Hai
Published: March 2013

To investigate the nonlinear phenomena of cutting forces when machining difficult-to-machining materials in the high-speed cutting process, system experiments by factorial design and Latin hypercube sampling design were conducted. The cutting force nonlinear characteristics were analyzed in time domain and frequency domain through wave-let analysis and power spectrum analysis. Experiments indicated that in the high-speed milling process, the characteristic curves of primary cutting forces could not strictly maintain their linearity with the variation of cutting parameters, the effect of one cutting parameter on primary cutting forces is sensitive to the combination of cutting parameters, and a lower frequency periodic signal appears when the cutting speed is above 471 m/min (spindle speed is 3000 r/min).
Effect of Carboxymethylcellulose on Plasticized Polylactide
Authors: Yamoum Chamaiporn , Magaraphan Rathanawan
Published: March 2013

Polylactide (PLA) was plasticized by two types of plasticizers, glycerol and triacetin. These plasticized PLA were mixed with carboxymethylcellulose (CMC). It was found that with only small amount of CMC, 4.5 wt%, it is effectively to lower glass transition, cold crystallization and melting temperatures of glycerol-plasticized PLA (PLA-g) but not much affected on tensile properties. Moreover, increasing amount of CMC twice could not much affect thermal properties but largely reduced tensile strength, modulus and elongation. The melt flow index of the PLA-g increased largely with the amount of CMC. When 4.5 wt% CMC was added to the glycerol-triacetin plasticized PLA, only glass transition temperature became lower than that of 4.5 wt% CMC filled PLA-g but melting temperature and crystallinity were rather increased with poorer mechanical properties. Increasing amount of CMC tended to enhance melting temperature but still rather poor mechanical properties and high melt flow index. So, the CMC had strong positive effect on melt and negative effect on solid properties of plasticized PLA.
Simulation Study and Application on HPDC Process with Automobile Part
Authors: Seo Kwang Kyu , Kwon Hong Kyu
Published: March 2013

In this research, Computer Aided Engineering (CAE) simulation was performed by using the simulation software (Z-Cast) in order to optimize casting design of an automobile part (steering wheel housing) which is well known and complicated to achieve a good casting layout. The simulation results were analyzed and compared with experimental results. During the filling process, internal porosities caused by air entrap were predicted and reduced remarkably by the modification of the gate system and the configuration of overflow. With the solidification analysis, internal porosities caused by the solidification shrinkage were predicted and reduced by the modification of the gate system.
The Statics and Dynamics Analysis of High-Dynamic Flight Simulator Based on Substructure Method
Authors: Xu Hua Yang , Guan Li Wen , Wang Li Ping
Published: March 2013

In this paper, the most serious loads configuration of High-Dynamic Flight Simulator (HDFS) was found firstly by rigid-body dynamics analysis, then level-by-levelfinite element analyzing based on substructure method for HDFS under the configuration above was carried out, from which we got the statics characteristic of arm/gondola frame/gondola and the dynamics characteristic of the overall structure respectively. Such analysis strategy couples the stiffness matrix and mass matrix of lower-level structures to upper-level structures, and takes the deformation of upper-level as boundary condition for lower lever by displacement coordinate relationship between them, consequently, the accuracy of this strategy is reliable, and the computational efficiency is evidently improved. Analysis results show that the statics and dynamics characteristic of HDFS could be carried out by the level-by-level analyzing strategy effectively and soundly. This kind of analysis strategy is able to extend to other multi-level structures, such as flight simulator, centrifuge, multi-axis turntable et al.
Flexural Toughness of Sprayable Strain-Hardening Cement Composite (SHCC) for Seismic Retrofit of Non-Ductile Reinforced Concrete Frames
Authors: Han Seung Ju , Yun Hyun Do
Published: March 2013

This experimental study investigates the flexural behavior and toughness of sprayable strain-hardening cement composite (SHCC) developed to retrofit seismically reinforced concrete structures with non-ductile reinforcement details. Three SHCC mixtures with specified compressive strength of 50 MPa are mixed and tested. All SHCC mixes with different dosage and combination of admixtures such as superplasticizer and powder admixture were reinforced with 2.2 % polyvinyl alcohol (PVA) fibers at the volume fraction. This paper focuses on the flexural toughness based on the flexural test results for 100 x 100 x 400 mm prisms. The flexural toughness is evaluated in accordance with ASTM C 1018. The results indicated that less than 2.5 % dosage of hybrid superplasticizer and powder admixtures respectively provides excellent sprayability and flexural behavior of SHCC mixed in this study. A strong influence of hybrid superplasticizer and powder admixture on the flexural toughness of SHCC mixes was observed.
Comparison of Experimental and Numerical Failure Criterion for Formability Prediction of Automotive Part
Authors: Yoon Jun Seok , Noh Hak Gon , Song Woo Jin , Kang Beom Soo , Kim Jeong
Published: March 2013

The ability to predict the forming severity with respect to crack and failure is essential to analysis of sheet metal forming process. The forming limit diagram (FLD) is commonly used to gauge the formability of sheet metal. In this article, forming limit diagrams of cold rolled carbon steel (JIS-SPCC), which widely used to produce the parts of automobile, are obtained by performing experiment and FE simulation with the Nakajima-test. By using the GTN (Gurson-Tvergaard -Needleman) damage mechanical model, a failure criterion based on void evolution was examined in this FE simulation. The parameters of GTN model are determined through comparison of experimental and numerical result with Nakajima-test. These parameters acceptably can be used in GTN model using given material. In application case, the reliability of the GTN model for failure criterion in simulation with automotive part was confirmed.
Thermal Analysis of Combined Cycle Power Plant with Desalination Unit
Authors: Elhaj Mohamed A. , Mahgub Moustfa M. , Matrawy Kassim K.
Published: March 2013

The aim of the present study is to utilize the excess energy of combined cycle power plant (CCPP) in desalination unit in cases of low electrical demand loading conditions. The main components of proposed (CCPP) included the gas turbine and steam turbine units. Gas turbine produces the major part of the developed power, while the steam turbine produces the remaining one in case of peak loading conditions. For the case of base load, the excess energy of steam turbine is used in desalination unit.
Research on Manufacturing Engineering Change Implementation Planning
Authors: Yin Yu Lan , Tang Tao
Published: March 2013

Engineering change (EC) is one the most important and complex issue in the manufacturing industries. The production schedule is always affected by ECs. To reduce the EC cost as well as its impact on production schedule, this paper presents EC implementation planning method. Three types of EC implementation planning is proposed according to the result of comparing the exhausting time point of the old materials with the arrival time of the new materials.
A Novel Intelligent Network Booting System
Authors: Fei Luo , Yi Jian Jun , Lin Chen
Published: March 2013

Network booting is the process of booting a computer from a network rather than a local drive. In this paper, a novel intelligent network booting protocol is proposed. It extracts all the states of the clients from their booting requests to their normal operations, which is depicted with a finite state machine. Based on the protocol, an intelligent network booting system is implemented with distributed modules, where the maintenance of the network booting system is automated, such as the preparation of the virtual booting partition for the client, loading and passing the booting parameters, and so on. Experiments are carried out to prove the efficiency of the network booting system.
CATIA Based 3D Product Information Definition and Organization
Authors: Zhou Qiu Zhong , Liu De Qing
Published: March 2013

It’s a problem of how to correctly express the complex products riveted joint information on product drawing, but the appearance of MBD technology would change it and provide an effective solution. The connotation of MBD technology using the text parameter and the flag note to express product non-geometric information was briefly elaborated, and the specific methods to express and manage the riveted joint geometric and non-geometric information was put forward. Through the analysis on the different express way and condition, the three elements such as riveting hole position, fastener installation direction and rivet hole direction was conveyed to express riveted joint geometry definition information. The flag note was used to identify and classify different riveting features, while the text parameter to express non-instantiated fastener, punching requirements, fastener installation requirements, number of holes and other types of non-geometric information. Additional, the flag note number was used to classify and manage all the non-geometric information in the structure specification tree. This method was realized to completely express the complex riveted joint information in a 3D model more easily and intuitively
A Method for Multi-Attribute Decision-Making with Complementary Preference Information on Alternatives
Authors: Zhou Hong An
Published: March 2013

The multi-attribute decision making (MADM) problem, in which the information about attribute weights are known partly and the decision maker (DM) has fuzzy complementary preference relation on alternatives, is investigated in this paper. Firstly, The objective decision-making information based on the subjective fuzzy complementary preference information on alternatives is uniformed by using a translation function. Secondly, a goal programming model is established. The attribute weights are obtained by solving the model, thus the overall values of the alternatives are gained by using the additive weighting method. Based on these values, the ranking priorities or selecting the best on alternatives are processed. The method can sufficiently utilize the objective information of alternatives and meet the subjective requirements of the DM as much as possible, and it is also characterized by simple operation and easy to implement on a computer. Finally, a practical example is illustrated to show the feasibility and availability of the developed method.
The Research of CR’s Application for Bluetooth Network
Authors: Du Qing Zhi , Peng Yi , Yang Xiu Mei , Yang Qiu Ping
Published: March 2013

Bluetooth is a low power, short range and promising wireless technology but has limited resources, and encounter the interference from other wireless systems and other Bluetooth piconets. As a flexible, efficient and reliable spectrum access by adapting the radio’s operating characteristics to the real-time conditions of the environment, cognitive radio technology is apply in Bluetooth network. This paper discussed the interference and the coexistence mechanism of Bluetooth network, and analysis the necessity of CR application in Bluetooth. Moreover, a cognitive frequency hopping (CFH) scheme is described, and for resolve multi-relays problem a cognitive relay selection method based on channel quality detection is proposed.
Study on Fuzzy Inference Method for Fault Diagnosis Expert System
Authors: Song Xu Dong , Shao Wei , Qiu Zhan Zhi , Chen Yan Xia
Published: March 2013

In this paper, a new fuzzy inference method for fault diagnosis expert system is proposed. Firstly, fault antecedents were processed by lexical analysis including removing redundant vocabulary and word segmentation. Secondly, for the purpose of improving the precision of the inference, we used the membership degree, and defined the confidence level of antecedent and the confidence level of conclusion and the closeness degree of the knowledge base rules. Finally we gave the reasoning processes and algorithms.
Microstructures and Mechanical Characteristics of Enamel and Dentin of Primary and Permanent Teeth
Authors: Si Qing Zong , An Xiao Li , Wang Zhen Guo , Li Ming Xi , Zhang Bao Pin , Liu Bin
Published: March 2013

Objective: To investigate the microstructures and mechanical characteristics of enamel and dentin of primary and permanent teeth by AFM, analyze their relationships and provide information for bionics and designs of dental materials. Methods: After embedding, cutting and grinding, 10 primary teeth and 10 permanent teeth were randomly divided into four groups. The morphology of samples was obtained by AFM and the roughness and Young’s modulus were calculated by JPK DP Data processing version 4.0 software. Results: In permanent teeth groups, the enamel rods arrange more tightly than those in primary teeth groups. The roughness of primary enamel （1203±39.5nm）was higher than permanent teeth（954.6±30.5nm）.The Young′s modulus of enamel in primary teeth（80.4±7.7GPa）was lower than permanent teeth（90.8±2.2GPa）. The roughness of dentin in primary teeth （1695±67.6nm）is higher than permanent teeth （1210±45.3nm）and the Young′s modulus of dentin in primary teeth（19.8±1.9 GPa）was lower than the permanent teeth （23.1±1.0 GPa）. Conclusions: The mechanical characteristics of primary and permanent teeth are closely related to their microstructures.
Study on Corrosion Resistance and Cytotoxicity of the Fluoropolymer Thin Films on Titanium Alloy Surface
Authors: Zhao Guo Ting , Zheng Qian , Du Yu Ting , Liu Bin , Zhang Jun Yan
Published: March 2013

The objective was to investigate the corrosion resistance performance of Ti-6Al-4V alloy surface containing fluorine polymer film and polymer film to cell toxicity. Be evaluating the application prospect in modified method of medical titanium alloy. Using spin coating technique and thermal cross-linking method to prepare fluorine polymer film on Ti-6Al-4V alloy surface, and then characterized by XPS and surface contact angle. By electrochemical corrosion method and the cytotoxicity experiment were to evaluate corrosion resistance and cytotoxicity of the fluorine polymer film. The results show the XPS of the experimental group were stronger spectrum peaks of element C, F; but the spectrum peaks of element Ti, Al were not observed, the surface contact angle in experimental group increased from 57.7° to 97.1°, compared with the control group. The results of electrochemical corrosion experiment showed that the corrosion potential increased from -0.82 V to -0.062 V, and the corrosion current density of the experimental group reduced from 1.301 × 10-5 A • cm-2 to 1.939 × 10-7 A • cm-2, compared with Ti-6Al-4V alloy. Meanwhile the cytotoxicity test showed that RGR values of the experimental group were greater than 90% at different time points, and RGR values were higher than 100% at 2 and 4 days. In conclusion, the Ti-6Al-4V alloy surface with the preparation of fluorine polymer film has better corrosion resistance and no cell toxicity. It has well prospect in clinical application.
Physical Properties and Mechanical Behavior of Cement Mortars Containing Waste Tire Rubber Particles
Authors: Li Xing Ping , Huang Da , He Xiang , Lin Hui Li , Sun Kai , Ye Qing
Published: March 2013

The physical properties and mechanical behavior of cement mortars containing waste tire rubber particles (WTRP) were studied. Several mortar mixtures were prepared by replacing quartz sand with 100% of WTRP and by using cement content of 150, 200, 250, 300, 350 and 400 kg/m3 respectively. Results indicated that dry bulk densities of the mortars containing WTRP were all less than 1000 kg/m3. The mortars had a certain hydrophobic property. The 28 d compressive strengths of the mortars were 0.59~2.29 MPa and the thermal conductivity values were 0.096~0.152 W/(m.K) increased with the cement content increasing. So, the mortars containing WTRP can be used as thermal insulating material.
Effects of Nano-TiO2 on Microstructure and Properties of Ceramic-Lined Composite Steel Pipes Produced by Centrifugal Self-Propagating High-Temperature Synthesis
Authors: Zhu Yu , Huang Feng , Ge Yu Xi , Ni Hong Jun
Published: March 2013

In order to improve the density and mechanical properties of ceramic-lined composite steel pipes produced by Centrifugal Self-propagating High-temperature Synthesis. Composite steel pipes were prepared by the method of centrifugal-SHS on the basic of Al-Fe2O3 system. With the condition of adding 6% SiO2 and 4% Na2B4O7, the effect of different amount of nano-TiO2 on the density and the mechanical properties of composite steel pipes was studied. By means of SEM analysis, XRD and mechanical tests, the results show that the ceramic layer consists of main crystal phase of α-Al2O3, with small amount phases of FeAl2O4, Al2SiO5 and B2O3. The surface of ceramic layer is smooth, without obvious crack and with good density. The shearing strength of the ceramic layer and the crushing strength of the composite pipe were 13.5 MPa under 8% (in mass) nano-TiO2 and 525Mpa. The density of ceramic layer is up to 94.2% under 8% (in mass) nano-TiO2.
An Iterative Algorithm on the Spectral Radius of a Kind of Centrosymmetric Matrix
Authors: Zhao Di , Li Hong Yi
Published: March 2013

This article bases on the reduction property of the centrosymmetric matrix. We analyze the method of computing the spectral radius of the inverse M-matrices, and present an iterative algorithm for the spectral radius of a kind of centrosymmetric matrices with special structure. We show that the computation cost will be reduced significantly by using this algorithm.Introduction and Preliminaries
A Back Propagation Artificial Neural Network Applied to Body Constitution in Traditional Chinese Medicine Modeling
Authors: Li Zhi Biao
Published: March 2013

In this paper, artificial neural network architecture is introduced to predict the Yin-Yang index of body constitution in traditional Chinese medicine (BCTCM). With pre-processing the inputting data by the median, the collected data is more consistent with the exact value of the characteristic parameters of BCTCM. Quasi-Newton algorithm is used to train the network model to accelerate the convergence speed of network training. Experiments show that, the result showed that they had good prediction accuracies for BCTTCM. The mean absolute error for 10 true measured points was 0.034. Therefore, the prediction model of BCTCM Yin-Yang index with BP neural network is doable.
Data Classification in Internet of Things Based on Evolutionary Neural Network
Authors: Zhang Bi Ying , Hu Wen , Feng Jian , Sun Wen He
Published: March 2013

Data classification is the foundation for the intelligent identification and management of massive information in the internet of things. To classify the massive data accurately, an evolutionary neural network is presented. The input features and the structure of neural network are evolved simultaneously to consider their joint contribution to the performance of neural network. The sensitivity analysis is performed to guide the evolutionary algorithm to search the optimum solution. It can be seen from the experimental results that the proposed evolutionary algorithm optimized the structure of neural network and eliminate the tedious input features at the same time. The excellent classification accuracy is achieved finally.
Transformer Fault Diagnosis Method Based on Support Vector Machine and Ant Colony
Authors: Mo Li Li
Published: March 2013

For transformer fault diagnosis of the IEC three-ratio is an effective method in the dissolved gas analysis (DGA). But it does not offer completely objective, accurate diagnosis for all the faults. Aiming at parameters are confirmed by the cross validation, using the ant colony algorithm, the ACSVM-IEC method for the transformer fault diagnosis is proposed. Experimental results show that the proposed algorithm in this paper that can find out the optimum accurately in a wide range. The proposed approach is robust and practical for transformer fault diagnosis.
A Novel Algorithm for Action Landmarks Extraction
Authors: Zhao Jing Jing , Yang Yong Ming
Published: March 2013

In this work, we present a new algorithm for extracting action landmarks from proposition landmarks graph. Compared to published approaches, the action landmarks extraction algorithm we proposed can find more disjunctive action landmarks and single action landmarks. We illustrate our ideas with experiments among benchmark domains. The experiments show that the new algorithm is competitive with traditional algorithm for finding action landmarks from relaxed plan graph.
Optical Characterization of Thiophene Blending with Non-Conjugated Polymer at Different Composition
Authors: Alias A.N. , Sahapini N.F.M. , Khalid S.H. , Zabidi Z.M.
Published: March 2013

Thin film conducting polymer thiophene based that is poly(3,4-ethylenedioxythiophene): poly(styrene sulphonic acid) (PEDOT:PSS) blended with Polyaniline (PANi) have been prepared with different composition by using drop casting technique. The optical characterization has been done by analyzing the absorbance spectra in the wavelength 300 to 800 nm. The electronic parameters were calculated by using Tauc/Davis-Mott Model. The results obtained showed that the absorbance, optical energy and Urbach energy were dependence on the ratio of PEDOT: PSS to PANi compositions.
A Packet-Combining Algorithm Based on SSLVPN with Hardware Acceleration Devices
Authors: Wang Mei Zhen , Wu Feng , Li Wei Ming , Xiao Ling , Yuan Jiang
Published: March 2013

SSLVPN is widely used in Web applications, e-commerce, teleworking, etc...Due to the need to provide security, the complex computing has been seriously upset the performance of SSLVPN, may even cause the VPN throughput rates decline by one to two orders of magnitude. To improve SSLVPN encryption performance, domestic and foreign scholars have made a number of studies. This paper focuses on the SSLVPN with hardware acceleration devices, and put forward a packet-combining algorithms，which could effectively improve encryption performance and data throughput of SSLVPN.
Smart Energy Saving Classroom System Using Programmable Logic Controller
Authors: May Zazilah Binti , Mohd Yaseen Yasir Ashiq Ali B.
Published: March 2013

The rise in energy costs urged the need in minimizing the energy consumption. As significant amount of energy is used for illuminating in educational buildings such as lecture halls and lecture rooms, improvements is needed to avoid energy waste for unoccupied and daylight hour. The lighting will be controlled based on demand to save the energy costs. This paper proposes a concept of smart energy saving classroom system using programmable logic controller (PLC). It integrates the lighting and air conditioner control system. The system is tested in one lecture room in Universiti Teknologi Petronas (UTP), Malaysia. Software for this project includes Simatic Manager, Wincc Flexible and Microsoft Visio 2010.The hardware includes Siemens S300 series PLC, Siemens 10 inch touch screen, network cable and MPI cable. The inputs are sensor at the door and sensors at each of the student seat while the outputs are the projector dc motor, lights, air-conditioner and touch screen. The proposed system offers a costs-saving solution with low maintenance and gives great performance results.
Characterization of Poly(N-vinlycarbazole) Blending with Different Composition by Using Polarized Electronic Spectroscopy
Authors: Alias Ahmad Nazib , Kudin T.I.T. , Zabidi Z.M. , Harun M.K. , Ali A.M.M. , Yahya Mohamad Faizul
Published: March 2013

Polarized absorption and dielectric spectra of blended poly (N-vinlycarbazole) (PVK) with polyvinylpyrrolidone (PVP) in different composition ratiosare investigated. Polymer coating was carried out using doctor blade technique on a quartz substrate. The polarized optical source was produced by using the uv-vis sheet polarizer. The polarized absorption and dielectric spectrum for parallel and perpendicular reveal that there are different significant results obtained between PVK and PVP with various polymer compositions.The polarized optical properties such aspolarization, ρwere calculated.These spectra indicate that the anisotropic properties of each polymer blends is different from each other.
Probabilistic, Cacheable Epistemologies
Authors: Li Hui Shan
Published: March 2013

In recent years, much research has been devoted to the investigation of the UNIVAC computer; however, few have explored the simulation of 802.11 mesh networks. Given the current status of homogeneous technology, cryptographers daringly desire the refinement of systems, which embodies the important principles of steganography. KRA, our new system for e-business, is the solution to all of these problems.
New Laser Cutting Technology of Sapphire Wafers on Crystals
Authors: Kondratenko Vladimir Stepanovich , Borisovskiy Vladimir Yevgenievich , Naumov Alexander Sergeevich
Published: March 2013

The work is devoted to development of new cutting technology of semiconductor wafers on crystals by a method of laser controlled thermocracking. There are results of numerical and experimental researches of the cut sapphire wafers on crystals for light-emitting diodes by means of two lasers (СО2 laser and UV laser).
Flexural Behavior of Steel Reinforced Brick Beam Utilizing Interlocking Brick System
Authors: Saggaff Anis , Tahir M.Md. , Shek Poi Ngian
Published: March 2013

This paper presents the full-scale experimental tests on steel reinforced and non-reinforced interlocking brick beam utilizing interlocking brick system. Two specimens were tested with and without steel reinforcement embedded in the beam formed using interlocking brick. The purpose of this study is to investigate the performance of beam utilizing interlocking brick subjected to bending. The flexural behavior of the beam will be studied and discussed in this paper. It is concluded that the use of steel reinforcement in the beam has significantly influenced the flexural capacity. The results obtained from this study can be applied in the design of structure utilizing interlocking brick. Future recommendations are proposed in this paper for further improvements.
Research on Reaction Kinetics of Photocatalytic Degradation of Methylene Blue in Water Solution with SrTiO3 Nano Film
Authors: Liu Hong Jun , Fan Zhou Gong , Li Ya Min
Published: March 2013

The nanostructured SrTiO3 film was prepared by sol-gel method and spin-coating process. The X ray diffraction (XRD) analysis shows that the SrTiO3 film is perovskite structure and has the average particle size 25.39nm. The photocatalytic degradation experiments were carried out in methylene blue solutions with the SrTiO3 film. The experimental results show that: the critical concentration of methylene blue solution is slightly higher than 3.289×10-5mol/L at which concentration the degradability of film can be most effectively exploited; when the molar concentration is less than the critical concentration, the photocatalytic degradation reaction can be expressed as the first-order reaction kinetics model and the reaction rate decreases with increasing initial concentration; when the concentration is higher than the critical concentration, the degradation reaction is more consistent with the zero-order reaction kinetics model, and the reaction rate remains almost constant with the varied concentration
Study on Photocatalytic Performance of Ag - AgBr/RGO
Authors: Wang Chu Bei , Zhou Jian Wei , Chu Liang Liang , Liu Jian Feng
Published: March 2013

Abstract. The surface plasmon resonance photocatalysts of Ag-AgBr/RGO were synthesized by chemical precipitation and photochemical reduction method. The samples were characterized by X-ray diffraction and UV-Vis absorption spectroscopy. The photocatalytic activities of catalysts were studied using the photocatalytic degradation of helianthine as a probe reaction. The results showed that the degradation rate of 10 mg/L helianthine reached 95% after 60 min of visible light irradiation.
Nanotechnology Application in Sports
Authors: Gong Zhi Gang
Published: March 2013

Nanotechnology have wildly been applied in sports engineering, such as sports stadiums, field turf, racks, sports-wear, equipments and supplement. This may greatly change the present situation of sports and promote the advance of athletic sports, creating a lot of opportunity for the increase of the record of athletic sports.
Research Progress of Nanomaterials about Removal of Toxic Metal Ions and Organics Used in Water Treatment
Authors: Wu Hui Qing , Wu Qing Ping
Published: March 2013

This paper is a simple review of nanomaterials about removal of toxic metal ions and organics from water/wastewater, include nanomaterial types, preparation methods and the research progress. Introduced with emphasis on nanoscale zero-valent iron, iron oxide nanoparticles, nanosized metal oxides, magnetic nanoparticles and mesoporous magnetic adsorbents with support medium such as bentonite, zeolites, sand, activated carbon, multiwall carbon nanotubes, porous molecular sieve and graphite alkenyl nanometer film. Some capping agents for preventing polymerization of nanoparticles were also introduced.
Optical Characterization of LaF3 by Variable Angle Purged UV Spectroscopic Ellipsometry
Authors: Deng Wen Yuan
Published: March 2013

The optical characterization of LaF3 thin film in DUV spectral range was experimental investigated by using a variable angle purged UV spectroscopic ellipsometer. In order to take into account the inhomogeneity, a theory model that dividing the single thin film into several sublayers was adopted. Two kinds of LaF3 thin films fabricated on fused silicate substrate with different substrates temperature were tested. From the obtained optical index and the physical thickness of different sublayer in the two different kinds of LaF3 thin films, it was found that, the inhomogeneity of the LaF3 thin film deposited with substrate temperature at 300°C was stronger than that of the LaF3 thin film deposited with substrate temperature at 250°C, indicating that the substrate temperature has important influence on the optical index and inhomogeneity of LaF3 thin films. For both of the two kinds LaF3 thin films, the agreement between the measured transmittance and the simulated transmittance using the parameters from regression of SE was nice, indicating that the selection of the material dispersion law and regression procedure were successful.
Equivalent Circuit Model for the Electrochemical Reaction Process within the Solid Oxide Fuel Cell Composite Electrode
Authors: Chen Dai Fen , Zeng Qi Ce , He Huan Huan , Wei Liang , Yu Zi Dong
Published: March 2013

As the fabrication technology of the composite electrode becomes sophisticated, the understanding of the detailed knowledge of the microstructure’s effect on the electrochemical process is essential for the commercializing of the solid oxide fuel cell (SOFC). In this paper, an equivalent circuit for the SOFC structure is proposed to clearly describe the electronic electric current transfer process, ionic electric current transfer process and the charge transfer process at the electrochemical reaction interface between electronic and ionic conducting materials. And types of the boundary condition setting constraints for the developing of the multi-physics coupling numerical model of SOFC are obtained basing on the electrochemical kinetic analysis.