bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Temporal and Spatial Distribution of PM10 in Yantai Urban Areas from 2006 to 2010
Authors: Chang Ming , Song Jian Guo , Wang Xin Zhi , Liu Wei
Published: June 2012

The purpose of this thesis is to study the characteristics of PM10 concentrations in the atmosphere over time granularity and spatial distribution in Yantai city. The concentration of PM10 is investigated in the daily from 2006 to 2010. The result shows that the characteristics of PM10 concentration in each time granularity are different: the interannual variation can be divided into two stages and the highest is approximately equal twice times of the lowest. The seasonal changes is distinct and the PM10 average concentration presents a feature that spring > winter > autumn > summer. And the highest month of PM10 is April, followed in March and May. The geographical distribution of PM10 is the center of pollution has been located in region A. Each region getting lowest in summer and the minimum one is region H where the concentration is 0.052mg/m3. The function regions can be divided into two categories: most regions show same as the seasonal changes but the region A and G’s characteristics change dramatically and the concentration of PM10 has come to 0.156 mg/m3 in the winter.
Study on Influence Law of Urban Architectural Structure on the Automobile Exhaust Diffusion Based on CFD
Authors: Zhang Yong , Gu Zheng Qi , Wang Zhen , Yu Yong
Published: June 2012

For study the law of urban buildings, in particular, the buildings at both roads’ sides in crossroads impacting on the diffusion of automobile exhaust, using CFD, combined with meteorological wind，simulates a crossroads automobile exhaust diffusion processing during waiting 35s. The results are following: in poor circulation areas, CO volume fraction in the buildings near-Earth space is up to 1.0e-7 and more than 100 times average value of the entire study area, so buildings structural layout has great influence. After Analysis, propose that local meteorological wind direction and speed should be considered and different height gradient design should be selected in buildings structural layout, so that the exhaust spread rapidly and drift to the urban high altitude, in order to improve air quality.
Prediction of Municipal Solid Waste Production in Changchun City Based on Gray Model GM(1,5)
Authors: Wang Chun Qing , Wei Xin Dong , Wang Xiao Ling
Published: June 2012

Using gray relational analysis, the relational degree between the production and impact factors of municipal solid waste (MSW) is calculated. Based on gray model GM(1,5) and gray model GM(1,1), the prediction models of MSW production were set up, on which base, MSW production from 2010 to 2020 in Changchun city is predicted. The result shows the waste production prediction models on gray theory have minimal residuals, higher precision and a relatively high relational degree, and by 2020, MSW production in Changchun City will reach 228.67×104 t by estimation.
FEM Analysis of Field Test for Tensile Forces Creating in Geosynthetic Components in Waste Landfill Liner
Authors: Li Ming Fei , Zhao Qin Xiang , Yang Lu
Published: June 2012

It is important to evaluate the factor affecting the tensile forces creating in geosynthetic components in waste landfill liner such as waste weight and working vehicle for designing anchor trench at side slope crest. In this research, FEM analyses were performed for the field tests with 5m height waste landfill model for evaluating the tensile forces creating in geosynthetic components of liner. In the FEM analyses, the stress-strain relationship of geotextile and geomembrance was modeled by linear elastic and the stress-strain relationship of filling soil and friction stress-relative displacement relationship of joint element was modeled by hyperbola. By the calculations, the scale of tensile forces creating in geosynthetic components was evaluated. The effects of load and placement of working vehicle on the tensile forces were investigated.
Effect of Aeration Rate on Forced-Aeration Composting of Sewage Sludge and Maize Straw
Authors: Hu Bo , Wang Zi Chao , Gao Meng Chun , She Zong Lian , Zhao Cong Cong
Published: June 2012

The composting of sewage sludge and maize straw was investigated in forced-aeration composting systems at aeration rates of 0.28, 0.56 and 0.83 l min-1kg-1organic matter, corresponding to pile A, pile B and pile C. The composting temperature in three piles met the hygienic safety criterion, and final electrical conductivity did not exceed the limit value of 3000 μS cm-1. The final NH4+-N content in pile C exceeded the limit value of 400 mg kg-1. The final NO3--N content, cation exchange capacity and germination index in pile B were superior to those in pile A and pile C.
Polluting Extent of Heavy Metal is Analyzed in Topsoil
Authors: Liu Wen Bin , Liu Huan , Liu Ya Qing , Cheng Han
Published: June 2012

Eight heavy metal elements（As、Cd、Cr、Cu、Hg、Ni、Pb、Zn）of five function areas are ploted in city by using matlab, according to their concentration and distributing extension. Overproof concentration of eight heavy metal elements is estimated by using aberrance coefficient. Cumulate exponent of overground is choosed to optimize model. Polluting extent of eight heavy metal elements is analyzed in quantity.We expatiate diffuse character of eight heavy metal elements in soil and moving law,when heavy metal elements enter soil.
Design, Preparation and Application of a Combined Catalyst for Coal Combustion
Authors: Cui Jie , Huang Huan Di , Dong Wen Jun , Li Chao Rong , Zheng Ying Ying
Published: June 2012

According to the electron transfer principle and the oxygen transfer principle of the coal combustion, a composite catalyst was designed and prepared. The doping of perovskite (CaTiO3), the desulfurizer (ZnO-Zn, Fe(C5H5)2) and the oxidizer (KMnO4) promotes the coal combustion greatly and achieves high combustion efficiency and low polution emissions. When the content of perovskte is 0.5%, the heat of combustion increases by 5%, the ignition temperature is reduced by 70 0C and the solid waste emissions are reduced by 9.36%. The roles of the additives are systematically studied as well.
Germplasm Development and Innovation of High Quality Edible Pumpkin: Halixiang NO.1.
Authors: Dai Yu Rong , Xie Hong , Du Chang Zheng
Published: June 2012

Pumpkin is one of the major vegetable crops in cucurbit family. Due to its easy cultivation, high yield, long shelf life and abundant nutriments, pumpkin is very popular in China. In this paper, we study on the germplasm development and innovation of high quality edible pumpkin: Halixiang NO.1. We also discussed the species quality, characteristics and field management.
Preparation of Environment-Friendly Deicing Salt of Calcium-Magnesium Acetate from Apple Sticks
Authors: Liu Zi Quan , Jiang Fu Yi , Liu Rui Cui
Published: June 2012

This experiment used dolomite and the pyroligneous liquid in the process of evaporation and carbonization of apple sticks. We used transformation, mixing, evaporation drying and a series of reaction processes to prepare light-colored low-cost calcium acetate magnesium salt (CMA) environment-friendly deicing salt. Also we tested its performance of melting ice and snow. Its best melting temperature is from -6°C to -11°C. Compared with deicing salt containing chloride ions, it has a higher melting efficiency.
Microwave Irradiation Syntheses of Poly Dodecyl Methacrylate- Methacrylate- 2-EthylHexyl Resin and Application in Pesticide
Authors: Li Jing , Zhou Xin Hua , Xiao Wen Qing
Published: June 2012

Resin was synthesized by microwave irradiation. The effects of cross-linker dose， initiator dose, and dispersant dose , as well as synthesis reaction temperature on the synthesized resin adsorption of oil were investigated. Morphologies and textural properties of the synthesized resins were characterized by using Scanning Electron Microscopy (SEM). The results showed: In comparison with synthesis method of traditional water-bath heating, the use of microwave irradiation can make the synthesis time shorter, and 10% increase in oil capacity than traditional water-bath heating. The resin had release function, so it can be made wettable powder or granules, which provided another alternative to cream formulations new way.
Analysis of Environmental Characteristics and Operational Reports of Small and Medium Turbines
Authors: Florescu Ana Maria Smaranda , Bandoc Georgeta , Degeratu Mircea
Published: June 2012

Application of environmental policies to prevent climate change, mitigation of climate change, the progressive reduction of emissions of greenhouse gases under commitments, encourage reducing energy consumption by using technologies that are efficient and support production of cheap and clean energy sources should be a priority for contemporary society. Given the above goals, the application presented in this article represents a model of how we addressed the question of the correct size of local wind turbines to provide energy coverage of a community. This method involves an analysis of environmental factors, followed by the analysis of wind in the area and continued to calculate the energy potential of the area and capable energy and wind turbines provided consumer choice
Cadmium Contamination in the Sediments of Love River Mouth, Taiwan
Authors: Dong Cheng Di , Chen Chih Feng , Chen Chiu Wen
Published: June 2012

Major objectives of this study are to evaluation the enrichment, accumulation, and potential ecological risk of cadmium (Cd) in the sediments of Love River mouth, Taiwan. Ten monitoring stations were installed near the mouth of Love River to collect sediment samples for analyzing Cd. Results of laboratory analyses show that contents of Cd in the sediments are between 0.27 and 1.25 mg/kg with an average of 0.74±0.33 mg/kg. The spatial distribution of Cd reveals that the Cd concentration is relatively high near the boundary of the river mouth, and gradually diminishes toward the harbor region. This indicates that upstream industrial and municipal wastewater discharges along the river bank are major sources of pollution. Results from the enrichment factor analysis imply that the sediments can be characterized as minor to severe degree of Cd enrichment. Results of geo-accumulation index analysis indicate that the sediments can be characterized as none to moderately strong degree of Cd accumulation. Results of potential ecological risk index indicate that the sediments at Love River mouth has moderate to high ecological potential risk.
Distribution and Source of Polycyclic Aromatic Hydrocarbons in Surface Sediments of Jen-Gen River Mouth, Taiwan
Authors: Chen Chih Feng , Chen Chiu Wen , Dong Cheng Di
Published: June 2012

Surface samples were collected from the Jen-Gen River mouth, Taiwan and analyzed for polycyclic aromatic hydrocarbons (PAHs). Total PAHs concentrations varied from 283 to 1,277 ng/g, with a mean concentration of 671 ng/g. The spatial distribution of PAHs reveals that the PAHs concentration is relatively high in the river mouth region, and gradually diminishes toward the harbor region. Diagnostic ratios showed that the possible source of PAHs in the Jen-Gen River mouth could be petroleum combustion. The toxic equivalent concentrations (TEQcarc) of PAHs varied from 43 to 169 ng TEQ/g. Higher total TEQcarc values were found in the river mouth region. As compared with the US Sediment Quality Guidelines (SQGs), the observed levels of PAHs at Jen-Gen River mouth were lower than the effects range low (ERL), and would probably not exert adverse biological effects.
A New Method for Photoelectric Device Simulation
Authors: Zhang Xiang Hua , Wang Jian Guo , Du Tai Jiao , Liu Feng , Chen Zhi Hua , Zheng Yan Li
Published: June 2012

A new method for photoelectric device simulation has been developed in our open source software “A Two-Dimensional General Purpose Semiconductor Simulator (GSS)”. Rigorous distribution of incident light in photoelectric device has been obtained by solving Helmholtz equation using finite element method (FEM) with uniaxial perfectly matched layer (UPML) as absorbing boundary. Optical carrier generation ratio has been calculated according to the conversation of energy law. Optical carrier generation ratio and I-V curve of a photoconductive diode induced by continuous wave laser are presented. Analysis shows that optical carrier generation calculated in GSS is more reasonable and I-V curve calculated in GSS agrees well with Medici’s.
Novel Temperature Dependent Process for α-Al2O3 Platelets
Authors: Yu Cheng Long , Hao Xin , Jiang Hong Tao , Wang Li Li , Zhang Zheng Guang , Wang Xiu Feng , Lin She Bao , Dong Juan
Published: June 2012

α-Al2O3 platelets were prepared in the interface of Na2O-CaO-SiO2 glass induced by Al. Phase identification was accomplished by X-ray diffraction analysis. The morphology of the platelets was observed using an Environmental Scanning Electron Microscopy (ESEM). The changes for the mixtures of the Al powders and the glass powders that occurred during heating were characterized by a combination of differential scanning calorimetry (DSC) and thermalgravimety(TG) on a multi-functional instrument. Confirmed by XRD and ESEM, at 1200°C, the prepared platelets have mean diameters between 400nm and 1000nm. Most of them are aggregated and part of them through intergrowth. The crystals develop from the interface between glass and Al, and can form good moistening with the glass matrix. DSC/TG shows that γ-Al2O3 formed by oxidation of Al, transforms into α-Al2O3 and grow into the platelet α-Al2O3 crystals owing to the molten Al and the molten glass. On the other hand, part of the molten Al erodes into the glass and makes the deviation of the Na2O-CaO-SiO2 ternary system into Na2O-Al2O3-SiO2 ternary system, resulting in the formation of NaAlSiO4.
The Simulation Research of Circle-Electrode's Electric Field of Steady Current Model
Authors: Zhang Xin Guo , Liu Zhong Le , Li Hua
Published: June 2012

This paper is based on Point-electrode model of electric field of steady current in sea, and regards the seawater as lining,uniformity and apiece-direction congenialitily half-infinity conductor space. Founding on the comparability of steady current field and static current field,the paper calculates the distribution of circle-electrode's electric potential of the steady current in the three-layers medium(air-sea water-seabed) by image method and gets the expession. Thus the paper takes the model of the circle-electrode's electric field of steady current of in the sea .
A Model of Adsorption Icemaker on a Fishing Boat
Authors: Qi Xiao Ni , Liu Zhen Yan
Published: June 2012

Adsorption refrigeration--without Freon as refrigerant, is an environmental friendly refrigeration technology. A novel exhaust-driven adsorption icemaker on a fishing boat is introduced in this paper. Different with the previous tubular structured adsorption bed, WHCT is made of seamless stainless steel pipe, the adsorbent bed, evaporator / condenser are all placed in one tube. In order to study the cooling loss in the transition section, a simplified mathematical model of the transition section was set upbased on assumptions.
Simulating Gyro of Strapdown Inertial Navigation System Based on Star Sensor
Authors: Gao Wei , Zhang Lei
Published: June 2012

In inertial navigation system, gyro is used to measure the angular velocity of carrier relative to inertial space for achieve attitude matrix updated in real time. Gyro difficult to eliminate the error, results in strapdown inertial navigation system precision decrease with time. Star sensor is a high-precision attitude measuring instrument and don’t require any priori information, the attitude date can be provided by star sensor. Thus, gyro is simulated by star sensor in order to improve the precision of strapdown inertial navigation system.
Simulation of Vehicle Dynamic Behavior on Ro-Ro Ship
Authors: Zhao Ding Xuan , Zhao Ying , Hou Jing Wei , Li Ying Jie
Published: June 2012

By modeling ship motion as two rotations, and modeling tire as spring and damper, the dynamics equation of ship and vehicle multibody system is developed using Lagrange equation. Runge-Kutta numerical method is used to get the solution of dynamics equation. The position of vehicle mass center and force between tire and deck contact are analyze for the safety of lash free design. The changing of position shows the stability of vehicle, and the zero vertical force in one tire shows that in severe conditions lash free design cannot ensure the safety of vehicle.
Aluminium Induced Sub-Microsized α-Al2O3 Platelets in the Soda-Lime-Silica Glass
Authors: Yu Cheng Long , Hao Xin , Jiang Hong Tao , Wang Li Li , Zhang Zheng Guang , Wang Xiu Feng
Published: June 2012

α-Al2O3platelets were prepared in the interface of Na2O-CaO-SiO2glass induced by Al. The morphology of the platelets was observed by Environmental Scanning Electron Microscopy (ESEM). The platelets are irregularly shaped at 720°C for 30mins and share mean thickness of 200nm. EDS shows that the platelets are rich in Si, reasonably due to the formation of Al-Si eutectic. At 1200°C, the prepared platelets have mean diameters between 400nm and 1000nm, most of which are aggregated and part through intergrowth. The crystals develop from the glass and can form good moistening with the glass matrix.
Application of Kingview and SQL Server Database on the Full Automatic Coating Production Lines of Solar Collector Tubes
Authors: Sun Xue Yang , Zhang Yu , Xiao Cheng Lin
Published: June 2012

Kingview software combined with the SQL Server database are applied in the data storage of monitoring system of the automatic coating production lines of solar collector tubes. The system can acquisition parameter the critical process parameters on-site in real time, the data after the necessary processing are stored in the database, as well as operations such as tracking of the history of process parameters, alarm queries, generating reports etc. can be realized in the corresponding pages that use the SQL functions contained in the Kingview.
Arsenic Removal Control System of Water Factory Based on Fuzzy Control
Authors: Wang Li , Li Xiao Jun , Li Tao
Published: June 2012

Arsenic is a toxic substance. It will bring detrimental effect to the health, when the arsenic content in water exceeds 10μg /L. For water containing arsenic, we use this control system to remove arsenic to ensure water quality. Arsenic removal in water production is with the characteristics such as time-varying, delay, nonlinear. The system uses a combining control strategy based on fuzzy control and conventional PID control. In the control process, , the precise control and stability can be achieved by online modifying and improving the control rules. The results of experiments show that this method has rapid response, no overshoot and good robustness compared with the traditional controller.
Global Robust Exponential Stability of Cohen-Grossberg Neural Network with Time Varying Delays
Authors: Zhang Rui , Wang Chang Tao
Published: June 2012

In this paper, the global robust exponential stability is discussed for Cohen-Grossgerg neural network with parameter uncertainties and time varying delays. On the basis of the linear matrix inequalities (LMIs) technique, and Lyapunov functional method combined with the Bellman inequality and Jensen inequality technique, we have obtained the main condition to ensure the global robust exponential stability of the equilibrium point for this system. The proposed result is less restrictive, easier to check in practice. Remarks are made with other previous works to show the superiority of the obtained result, and the simulation example is used to demonstrate the effectiveness of our result.
Application of Fuzzy Neural Network to Analog Circuit Fault Diagnosis
Authors: Zhou Shi Guan , Luo Zai Fei
Published: June 2012

Considering the discreteness and non-linearity of the component parameter and the advancement and limitations of neural network in the analogous circuit fault diagnosis and as the combination of the fuzzy logic and neural network, the fuzzy neural network’s having the merits of both, involving learning, association, recognition, adaptation and fuzzy information processing, a method with fuzzy neural network for the analogous circuit fault diagnosis is proposed. In this paper, the structure and training methods of the fuzzy neural network are presented and the specific implementation of the diagnosis system is illustrated with examples. Simulation results show that the mathematical model has a better diagnostic effect. Compared with other methods, this diagnostic method, with the broad application prospect of its structure and method, is scientific, simple, and practical and so on.
Design of Towing Operation Training Simulation System with Multi-Channel Display
Authors: Zhao Ding Xuan , Zhao Ying , Li Ying Jie
Published: June 2012

The construction of towing operation training simulation system based on HLA (High Level Architecture) and Vega Prime interface is analysed. Designed the detailed object model for distribute simulation, and analyzed the responsibility of federation and each federate. The flow chart of simulation program which runs HLA and Vega Prime simultaneously was designed. In the multi thread program, the rendering cycle of Vega Prime is main thread and HLA thread for time cycle is embedded in. A multi-channel display system was also used to improve the visual effort of training system.
Improving the Compression Strength after Impact of RTM Composites by Interlaminar Thermoplastic Nonwoven Fabric
Authors: Zhang Peng , Liu Gang , Hu Xiao Lan , Zhao Wen Ming , Yi Xiao Su
Published: June 2012

Based on the “ex-situ” toughening concept, thermoplastic nylon (PA) nonwoven fabric with high porosity was chosen as the toughening layer, and the interlaminar toughened composites were fabricated via RTM process. Compression strength after impact (CAI) properties were investigated as well as the toughening mechanism. The results indicated that there is no bicontinuous phase structures formed by reaction-induced phase decomposition and inversion. The PA nonwoven fabrics still kept the original structure in composites interlaminar, and formed a macroscopical bicontinuous structure with the matrix resin, which also showed remarkable toughening effect. The CAI value increased from 212MPa to 281MPa.
Crystallization Characteristics and Thermal Stability of Fluor-Hydroxyapatite Composites with Zirconia
Authors: Wang Li Li , Wang Xiu Feng , Yu Cheng Long , Jiang Hong Tao
Published: June 2012

Hydroxyapatite (HA) was synthesized in presence of 20wt% m-ZrO2by solid state reaction between tricalcium phosphate(TCP) and Ca(OH)2at 1000 °C for 2h. Similarily, Fluorine hydroxyapatite(FA) was synthesized using tricalcium phosphate and calcium fluoride as raw materials at 1000 °Cfor 3h. The as-prepared HA was mixed with 10%,25%,45%,55%,70wt% FA and the mixture was sintered at 1000°C-1400°C for 2h. The main phase and bulk density was measured. The results show that when the relative amount of FA to HA increased, the decomposition of the composite is decreased gradually because of the formation of thermally stable FHA solid solutions. Low temperature would effect the exchange of ionic between FA and HA,while high temperature would impact synthesis of composites, because high temperature would lead to dissolution of HA ,which has to react with FA. Increase the content of HA would be advantage for synthesis FHA-ZrO2composite.
Biogas Generator Temperature Monitoring Based on Time Series Algorithm
Authors: Wang Zuo Xun , Zhang Ying Chun , Wang Gui Juan , Meng Rong Ai
Published: June 2012

The biogas generator temperature control is very important to the temperature of the biogas generator for effective control, So the temperature must be monitored. Pre-estimated by measuring the temperature and fast temperature control is the most effective means. In this paper, using time series analysis method, we establish three prediction models, which are namely autoregressive model, moving average model, hybrid model. By comparison of three models, the final choice to predict the temperature of the biogas generator is mixed model analysis of time series. The test error is very small, indicating that the method has some practical value.
A New Nonlinear Excitation Control Strategy with Terminal Voltage Feedback
Authors: Sun Xiao Juan , Guo Quan Min
Published: June 2012

This paper presents a new nonlinear excitation controller for transient stability with voltage feedback of a synchronous power generator connected to a single machine infinite bus. In this design terminal voltage is introduced as a feedback. The proposed controller based on voltage feedback technique which enhance the transient stability of power system and stabilizes the terminal voltage about the given operating point when the fault occurs closer to the infinite bus bar. Simulation results show that, compared with the controller without voltage feedback, the proposed controller has better control effect on power system and which remarkably improves the deficiencies in the control of generator terminal voltage of the traditional control.
Iterative Regularization Model for Image Denoising Based on Dual Norms
Authors: Chen Guan Nan , Xu Dan Er , Chen Rong , Huang Zu Fang , Teng Zhong Jian
Published: June 2012

Image denoising algorithm based on gradient dependent energy functional often compromised the image features like textures or certain details. This paper proposes an iterative regularization model based on Dual Norms for image denoising. By using iterative regularization model, the oscillating patterns of texture and detail are added back to fit and compute the original Dual Norms model, and the iterative behavior avoids overfull smoothing while denoising the features of textures and details to a certain extent. In addition, the iterative procedure is proposed in this paper, and the proposed algorithm also be proved the convergence property. Experimental results show that the proposed method can achieve a batter result in preserving not only the features of textures for image denoising but also the details for image.
Delay-Dependent Stabilization for Singular Time-Delay Systems
Authors: Gao Jin Feng , Ren Jia , Meng Chuang
Published: June 2012

Some new results of delay-dependent stabilization for linear singular time-delay systems are presented. And the time delay considered here is assumed to be constant but unknown. By using a new Lyapunov-krasovskii functional which splits the whole delay interval into two subintervals and defines a different energy function on each subinterval, a sufficient delay-dependent condition is obtained for the singular time-delay system to be regular, impulse free and stable.
Adaptive Controller Design for a Class of Discrete Nonlinear Systems
Authors: Lou Xiao Chun
Published: June 2012

In this paper, we have discussed the adaptive controller problem for a class of nonlinear discrete systems. Firstly, the general nonlinear discrete-time system is transformed into a new form which is more suitable for adaptive controller design. Based on the new model, the observer is proposed to estimate the unavailable states. The adaptive controller is designed to track the desired trajectory.
A Study on Fault Model and Fault-Tolerant Routing for Sensor Networks
Authors: Xu Zu Ming , Fu Xiong
Published: June 2012

Wireless sensor networks require energy-efficient and robust routingprotocols. Most routing protocols for sensor networks try to extendnetwork lifetime by minimizing the energy consumption, but have not taken the network reliability into account. In this paper, we analyze the fault models and propose an ENergy-aware FAult-tolerantRouting scheme, termed as ENFAR. Firstly a link-based uniform fault model is presented, and we adopt a cross-layer design to measurethe transmission delay so as to detect the failed nodes.
A SOA Control Platform for IMS-Based IPTV
Authors: Tan Chun Guang , Chang Gui Ran , Sun Li Na , Miao Chang Sheng , Jia Jie
Published: June 2012

This paper proposes a SOA(Service Oriented Architecture) control platform which offers commonly required control functionalities such as terminal control, service session connectivity control, service information exchanging, etc., so that enables more efficient control platform configuration. Also it presents requirements and core functionalities of the SOA control platform for effective control on the interaction between various services and the platform. The SOA control platform is considered on next generation network, and it is focused on IPTV service control in the IMS network environment.
Block Statistic for Palmprint Recognition Based on High Frequency Coefficients under Wavelet Transform
Authors: Liu Yu Qin , Yuan Wei Qi , Guo Jin Yu
Published: June 2012

Palmprint recognition for identification provides a new scheme for information security. This paper presents a block statistic method based on high frequency coefficients under wavelet transform for palmprint identification. Firstly, the method decomposes region of interest (ROI) of the palmprint with the wavelet transform. Then it blocks the high-frequency sub-image. The mean and the variance for each sub-block are found. All the means and the variances constitute feature vector for the image. At last the nearest neighbor classifier is used to classify the images. The method was tested on the basis of UST palmprint image database. From the experimental results, the method can satisfy the uses without excessive demands for collection images.
A Novel Control Scheme Based on Improved RBF Neural Network
Authors: Xie Xiao Zhu , Guan Xing Lai
Published: June 2012

A novel control scheme based on an improved RBF neural network and PID control method is proposed. When used the RBF network in the PID controller, if RBF network provides the parameter to revise PID while it does not have training finished, the controller will oscillated or even to diverge. As the structure is more complex, and the adjustment speed is slower, the improvements are made to the standard RBF neural network trained algorithm. Uses the matrix operation substitute the iterative algorithm, may avoid the above question effectively. Finally, choosing a certain type of PID controller, the improved RBF neural network algorithm is used to design the control law for control command tracking, the simulation results show that the improved RBF neural network algorithm can avoid oscillated and diverge.
A Novel QoS Guaranteed Cross-Layer Scheduling Scheme for Downlink Multiuser OFDM Systems
Authors: Ma Wen Min , Zhang Hai Jun , Wen Xiang Ming , Zheng Wei , Lu Zhao Ming
Published: June 2012

To provide quality-of-service (QoS) differentiation and guarantee user fairness, efficient power and spectrum utilization for the downlink multiuser orthogonal frequency-division multiplexing (MU-OFDM) systems, a novel QoS guaranteed cross-layer (QGCL) scheduling scheme is proposed in this paper. The scheme formulates the scheduling into an optimization problem of overall system utility under the system constraints. Moreover, we propose a simple and efficient binary constrained particle swarm optimization (PSO) to solve the scheduling more effectively. Comparing with the classical methods, simulation results show that the proposed QGCL scheduling scheme can significantly maximize the system throughput given that the fulfillment of the QoS requirements as well as the fairness is guaranteed.
Simulation Analysis of Guided Wave Testing on Wind Turbine Blade Shell with Epoxy Resin and Semi-Analytical Finite Element Modeling
Authors: Zhou Fang Jun , Sun Yong Liang , Wang Yue Min , Sun Feng Rui
Published: June 2012

Non destructive testing is very important on wind turbine blade since wind energy has been an upgrowing industry as green energy.For the linetype of blade is twisty ,it can not be described easily in Cartesian orthonormal coordinate.A special twisty coordinate system is proposed.The wave dispersion curve of blade shell is calculated by semi-analytical finite element method and dynamical simulation of wave propagation on blade is finished.Both results agree well,showing the validity of guided wave testing on wind turbine blade.
A Simulation and Verification Tool for Online Scheduling Algorithms Based on Component Technology
Authors: Chen Xin , Guo He , Ding Ning , Fu Kai , Jiang He
Published: June 2012

In this paper, we design and develop an extensible tool which is used to simulate and verify online scheduling algorithms based on component technology. After generating jobs sequence randomly, this tool can simulate algorithms’ execution process and find the optimal solution, then compare the results. Users can understand algorithms’ rules better and then design new algorithms with the help of this tool.
An Integrative Model for Self-Service Technology Adoption
Authors: Yang Ying Chieh , Yang Yih Yuan , Liu Sheng Wen
Published: June 2012

With the tremendous growth of self-service technologies (SSTs) in many industries, SSTs in service provision are recognized as more effective and important technologies to minimize investment costs and maximize service quality. By means of reviewing and integrating literature in several fields, the present paper attempts to provide an understanding of links between SST characteristics, consumer propensity towards SST usage, social pressures, and SST adoption. This paper also advances 14 tentative propositions for additional research and develops a conceptual model to predict and explain consumer attitudes and intentions towards SST usage. Besides the need for empirical confirmation of the propositions given, finally, there are several practical implications for service marketers and future research directions for scholars.
The Measuring Method for Low Rotational Speed with the Frequency Difference Generated by Radial Gratings
Authors: Guo Wen Long , Qiao Yan Feng
Published: June 2012

The new method has been proposed based on the comparison and analysis of the traditional methods for measuring rotating speed. It can guarantee real-time property with radial gratings at measuring low speed. It is clearly explained that the fundamental principle for measuring rotating speed and characters of the method and presented the constitution of the system hardware and the process flows.
Research on Conductive Property of Carbon Fiber/Carbon Black-Filled Cement-Based Composites
Authors: Du Yan Ting , Zhao Ran Ran , Dong Jin Qiu
Published: June 2012

Electrical conductive carbon-modified cement-based composites are important multi-functional structural material. Double compounding carbon fiber and carbon black into cement-based material can improve the electrical conductive property of cement-based composites. In this paper, the influences of carbon fiber ratio and total volume fraction of carbon components on the resistivity of cement-based composites are investigated. The results show that both carbon fiber ratio and total volume fraction have great effect on the conductive behavior of carbon-modified cement-based material. At a fixed carbon fiber ratio, with the increase of total volume fraction, the resistivity of cement-based composites drops down dramatically and shows obvious percolation phenomenon. The reason is that with more and more conductive particles and fibers added into the cement material, the conductive components connect with each other gradually and at certain point reach the percolation threshold. At a fixed total volume fraction, the resistivity drops down with the increase of carbon fiber ratio. This is because that the carbon fiber has larger aspect ratio than carbon black, so carbon fiber could get lower resistivity with the same dosage according to the percolation theory. Finally, the results show that with 0.5 carbon fiber ratio and 2% total volume fraction the carbon-modified cement-based composites have relatively low resistivity, high workability and high compressive strength.
Path Optimization for Automatic Guided Vehicle Based on Fusion Algorithm of Particle Swarm and Ant Colony
Authors: Hou Yuan Bin , Yuan Yi Qian , Li Bai Ping
Published: June 2012

Aim at search precocity of particle swarm algorithm and slow convergence speed problem for ant colony algorithm, in the automatic guided vehicle path optimization a path optimization algorithm is proposed, which is fused by particle swarm algorithm and ant colony algorithm. Firstly, robot motion space model of the algorithm is created using link figure. After got fixed circulation rapid global, search to get more optimal path by means of improved fastest convergence ant system, then using a particle ants information communication method to update pheromone, finally, optimal path is drew. The simulation experiment shows that, even in the complex environment, this algorithm can also has the advantage of ant colony algorithm to optimize the result accurately and particle swarm algorithm local optimization accurately and rapidly, and a global security obstacle avoidance of optimal path is plot, the route is shorten 8% compare than the general ant colony algorithm.
Design and Implementation of a Home Automation System Based on ZigBee and 3G Terminal
Authors: Wang Jing , Liu Jia , Wang Huan
Published: June 2012

With the recent technological advances in zigbee, 3G and embedded technology, development of home automation has been enabled and become dramatically feasible. Based on the advantage and feature of Zigbee and 3G, this paper introduces a home automation system. First of all, this paper discuss the network topology of system, which makes up of inner-net, home gateway and outer-net. The inner-net, consisting of subsystem, security alarm subsystem and smart appliance control subsystem, communicates with outer-net by home gateway. And then, this paper mainly analyzes hardware and software design of these subsystems and gateway and it gives an implement scheme. At last, the paper proposes a solution of low power strategy.
Structural Analysis and Optimization for a Frame-Type Cab of a Heavy-Duty Truck
Authors: Gao Yun Kai , Fang Jian Guang , Xie Ming Cong
Published: June 2012

The structural analysis of a cab can examine its performances, and then provide a direction for structural optimization. This paper takes a frame-type cab as the research subject, its finite element model and corresponding test scheme are established, and then its torsion stiffness and modal characteristics are analyzed through both simulation and test. Appropriate variables for optimization are screened according to sensitivity analysis. Finally structural optimization for the cab is conducted, so that its torsion stiffness is improved effectively, and simultaneously the structural lightweight design is accomplished on the premise of maintaining the lower modal frequencies on the original level.
Optimization of the Sieve’s Structure about Vibration Filtration and Transportation Equipment
Authors: Li Jin Liang , Lv Chuan Yi , Wang Zheng Fang
Published: June 2012

Basing on confirming the structure parameters of relative components and simulation, movements of material on the sieve were analyzed, and then put forward one new-style structure of sieve. According to every point’s kv and movement locus on the sieve, figure equation of whole sieve was found. The optimal figure of sieve which is fit for the filtration and transportation was acquired. Through analysis and computation, material’s transportation velocity was achieved, and checked out the material transportation efficiency furthermore.
Convergence Analysis for the Elliptic Boundary Value Problem of Rectangle Nested Refinement Finite Element with Q1 Truncation
Authors: Wang Qi Sheng , Zhao Yi Gao
Published: June 2012

In this paper, the finite element method of rectangle nested refinement was introduced, and the level Κ rectangle grid refinement and related properties on planar region were given. According to boundary problems of a kind of elliptic equation, the results of the convergence were proved for the finite element of Κ level rectangle nested refinement under Q1mappings by affine mappings replaced.
Studies on the Thermal Decomposition Kinetic of an Nitrate Ester
Authors: Wang Juan , Liu Da Bin , Zhou Xin Li
Published: June 2012

The certain nitrate ester explosive has been tested by TG at the heating rates of 10, 15, 20, 25K•min-1. Basing on the TG experiment results the thermal decomposition activation energy has been calculated by the methods of Ozawa, KAS and iteration. And the thermal decomposition mechanism function of the explosive with 38 kinds of dynamic function was deduced by the method of integration. The results show that the thermal decomposition mechanism of the nitrate ester is chemical reaction mechanism. The thermal decomposition kinetic parameters such as average activation energy Ea and pre-exponential factor A are 133.23×103 J•mol-1 and 3.191×107 s-1 respectively.
Finite Element Method in the Research on the Application of Contact Deformation
Authors: Su Jia Jia , Chen Jing Hu
Published: June 2012

Wear is the matrix surface and plastic deformation as the basic factors of the phenomenon, this paper analyzed with abaqus finite element method friction deformation which stress. The results show that the stress state changes drastically with different friction coefficient and the distribution of plastic deformation regions also changes. The regions seriously damaged by friction lead to fatigue via plastic deformation, which is the main reason for material friction and then dislocation friction occurs.
The Load Analysis of Chisel-Edge Ruling Tool for Diffraction Gratings
Authors: Guo Li , Jirigalantu  , Zhang Fang Cheng
Published: June 2012

The process of wear design on chisel-edge ruling tool of diffraction gratings is very complex because of following two reasons that one is the load distribution on minute edge area when grating ruling, and the other is the anisotropic character of natural diamond. The former is the first step when wear design on chisel-edge ruling tool of diffraction grating, In order to predicate the load distribution on minute edge area of tool, this paper simulated the load distribution on minute edge area of tool by software when ruling on Aluminum-1100 with tabular data format flow stress and Aluminum-1100 with Power law flow stress respectively, and through comparative analysis determined the approximate load distribution on minute edge area of chisel-edge ruling tool that the high load mainly focused on the edge area close to the tip of ruling tool and amount to 200MPa while about to 100MPa on the face of tool.
The Parameter Inversion and Stress Simulation Analysis for High RCC Gravity Dam in Construction
Authors: Qiang Sheng , Wang Xiang Rong , Xie Zhi Qiang , Zheng Zhan Qiang
Published: June 2012

Before and after pouring the concrete for a dam, how to predict and obtain the accurate temperature and stress of the various parts of the dam, is the key to prevent cracks in concrete. The stresses calculated from the parameters of the laboratory under the ideal conditions have obvious difference with the value calculated from site measured strain. As for such problem, based on the measured temperature and strain data of rolled compact concrete gravity dam engineering, the thermal and mechanics parameters of the concrete materials are inversed. The dam stress of construction period is simulated and analyzed separately based on the site parameters and lab parameters. The results show that although the stress development law from different ways is near, their values are different obviously because of three aspects. The site measured values should be more real. So it is necessary to inverse the thermal and mechanics parameters according to the site measured data.
Nonlinear Stability Analysis for Schwedler Reticulated Dome
Authors: Li Xiao Li , Ji Jing
Published: June 2012

On the base of finite element linear Eigen value analysis, overall stability analysis of Schwedler reticulated dome has been conducted by means of the nonlinear finite element method. The arc-length method was utilized to solve the nonlinear equation systems, and the load-displacement curves of the spatial latticed shell structure were obtained. It is safer to adopt the nonlinear buckling analysis for structure. These can provide a valuable reference for the design and analysis of the similar special latticed shell.
Microstructure and Mechanical Properties of Al-12.6%Si Composite Reinforced by Al63Cu25Fe12Quasicrystal
Authors: Li Can Can , Geng Hao Ran , Li Zhen Yuan , Qin Hai Ou
Published: June 2012

In this paper, Al-12.6%Si/Al63Cu25Fe12 composites were fabricated by method of casting. The microstructure and chemical composition of Al63Cu25Fe12 quasicrystal alloy and Al-12.6%Si alloy reinforced by the quasicrystal were studied, and the mechanical properties of Al-12.6%Si composite were also measured. The results show that almost single quasicrystalline phases exist in the samples which are cast with the 1300°C melt. Quickly enough cooling rate and appropriate melt temperature are necessary for the formation of the quasicrystalline phase. In addition, Al-12.6%Si composite has optimal mechanical properties when the amount of Al63Cu25Fe12 quasicrystal is 3 wt%.
Level Set Method for Topological Optimization of the Naiver-Stokes Fluid Flow
Authors: Duan Xian Bao , Qian Fu Cai , Qin Xin Qiang
Published: June 2012

This paper presents a general algorithm for topological optimization of the incompressible Navier-Stokes fluid flow based on a level set method. This is a direct extension of our previous work on Stokes flow of such problems. First we obtain the shape sensitivity analysis using the material derivative concept and adjoint variable technique, and then we couple the shape sensitivity analysis result into the level set function as the advection velocity. Since the level set method is implemented in an Euleran framework, the computational cost of the proposed algorithm is moderate. A Benchmark example is provided to illustrate the efficiency and validity of this method.
Study on the Motion Generation Method of Gun Training Simulator
Authors: Wang Yu , Su Ri Na
Published: June 2012

A kind of 3-RPS and 3-DOF parallel robotic mechanisms is used as motion-sensible-platform of gun training simulator to implement the motion simulation. Its dynamics is analyzed and driving force of joint is gained. This paper introduces the study on motion generation of gun training simulator. The moving model of gun is established on the basis of the model of vehicle. We solve the pose of gun by applying the theory of homogeneous matrix. In order to ensure actuators moving at a preset speed and enable the motion-sensible-platform to perform a real-time moving posture simulation of a wheeled gun vehicle in running, the speed equation of actuator is given. The feasibility of models was tested through the simulation experiments. All of these works are beneficial to optimize design and control realization of motion platform structure.
A Gravitational Fuzzy C-Means Clustering Algorithm Based on Density Weight
Authors: Zhang Tian Wu , Guo Gong Bing
Published: June 2012

Fuzzy C-means clustering algorithm(FCM) is sensitive to its initialization of value and noise data and easy to fall into local minimum points, while it can’t get the global optimal solution. This paper introduces gravitation and density weight into the process of clustering, and proposes a gravitational Fuzzy C-Means clustering algorithm based on density weight (DWGFCM). The experimental results show that the algorithm has better global optimal solution, overcomes the shortcomings of traditional Fuzzy C-means clustering algorithm. Clustering results are obviously better than FCM algorithm.
Outage Probability of CSI-Assisted Opportunistic Amplify-and-Forward Relaying with MRC Reception
Authors: Wang Li Hong , Liu Fu Min , Zheng Qing Jie
Published: June 2012

The outage probability of the channel state information assisted opportunistic amplify-and-forward relaying system with a maximal ratio combining receiver at the destination is investigated, and the exact outage probability expression is presented. The asymptotic equivalence of two different opportunistic relay selection criterions (maxSNR and maxmin) is proved too. Monte Carlo simulation results show that the derived expression is in excellent agreement with the outage probability of systems based on the maxSNR criterion, and also provides a good approximation to the outage probability of systems based on the maxmin criterion.