bluuebunny/crossref_metadata_2025 huggingface dataset:
Moving Target Tracking Using Sparse Optical Flow Method
Authors: Chen Tian Ding , Hu Jian , Lu Chao , He Zhong Jiao
Published: July 2013

Moving target tracking is a hot research spot of computer vision and applied in various fields. In this paper, a new tracking method base on sparse optical flow is put forward. In this method, targets are tracked through calculating the movements of Harris corner points, rather than the movements of all pixel points. Experiments results show that the tracking effect of this new method is pretty good. Tracking accuracy can reach more than 80% in most experimental conditions. And according to other peoples research production, experiments based on dense optical flow are done to compare with the new method proposed in this paper. The comparison results show that the new method has high calculation efficiency. This indicates that the method has feasibility and practical value.
A Method to Extract Contour of Wheat Pests Based on LCV Model
Authors: Li Jian , Wang Li Juan , Zhang Xue Tao , Li Yi
Published: July 2013

A method to extract contour of wheat pests based on LCV model is proposed in this paper. This method uses calculation of the weighted average gray value of the partial window function to replace the global mean value, and added the constraint level set function as a the energy term of signed distance function to avoid the re-initialization of the level set function. This method can be extracted the contour of wheat pests effectively, and thus it improves the efficiency of the extraction of wheat pests shape feature. The effectiveness of this method is verified by MATLAB simulation experiments.
Impact of Soil Nutrient Contents and Spatial Variability in Different Sampling Schemes under the Conservation Tillage
Authors: Li Si Jia , Sun Yan Nan , Wang Hong Bin , Chen Zhi Wen
Published: July 2013

According to the 40×40m mesh, taking the 180 soil samples in both strains and ridges of the demonstration fields under the stalk mulching conservation tillage for 5 consecutive years in Gaojia country, which the area covers 15 hm2 in Li Shu town, Jilin Province. The available N, available P, available K and other nutrition of soil in different sampling schemes have been tested. Based on the platform of GIS and the method of geostatistical analyst, the space distribution's characteristics of the three kinds of soil's nutrients have been researched, which demonstrate each variable corresponds normal distribution, the contents of available N and available K in different sampling schemes vary so much, but the content of available P has shown much more similarity than difference. Through the analysis of semivariogram, the soil nutrients in every different sampling schemes have revealed a moderate intensity autocorrelation and a relative strong spatial heterogeneity, which are affected by structural factors such as soil types, parent material, terrain, climate, hydrological conditions and so on, and they are also affected by random factors, for example, fertilization, cropping system, tillage operation and management. Analyzing the three nutrients in different sampling schemes, which are affected by random factors. Through applying the semivariogram and kriging to analyze the impacts factors of spatial variable in the soil, there are the differences between the two methods.
A New NMO Method Based on Non-Hyperbolic Reflection Event
Authors: Ge Yong , Xie Yu Hong , Li Lie , He Jiao Deng , Li Tian Cai , Zhang Xing Yan
Published: July 2013

The conventional velocity analysis and normal moveout (NMO) are based on hyperbolic event, but the assumption of hyperbolic travel-time only applies to the situation where offset is less than or equal to the depth of reflecting interface. In recent years, in order to explore the new domain in deeper region, acquisition and processing about seismic data are developed rapidly. Maximum offset of acquisition has been reached or more than 8000 meters, and the coverage reached 100 times too. So the conventional hyperbolic normal moveout is not suitable for long cable acquisition. To solve the problems led by long array, this paper introduces the long array non hyperbolic NMO method, and it works well both in the model and practical data.
Estimation of Biomass and CN Accumulation in Corn at Maturation Stage Based on SPOT-5
Authors: Wu Jie , Li Yu Huan , Li Zeng Bing , Wang Jing
Published: July 2013

The monitoring models to estimate the above-ground biomass weight and carbon and nitrogen (CN ) accumulation of corn at maturation stage were established based on SPOT-5 images to provide reference for prediction of land production, effective nutrient balance of cultivated soil and carbon and nitrogen cycles. The appropriate spectral parameters were filtered out and the optimal monitoring equations were established between spectral parameter and above-ground biomass weight and CN accumulation by using Pearson correlation analysis and linear and nonlinear simulations. The adjust brightness vegetation index (SAVI) showed a significant positive correlation with the above-ground biomass weight and carbon accumulation and the correlation coefficients were 0.831 and 0.846.The strongest correlation with nitrogen accumulation was ratio index (R3/R1) and the correlation coefficient was 0.844.The power function model based on SAVI inversed above-ground biomass weight and carbon accumulation was the best, R2 were 0.6982 and 0.7216.The linear function model based on R3 / R1 inversed nitrogen accumulation was the best and R2 was 0.7129.Based on the optimal monitoring models, the thematic maps were produced to monitor above-ground biomass and CN accumulation in corn at maturation stage. The estimating model based on the SPOT-5 images can achieve high precision in estimating the above-ground biomass weight and CN accumulation in corn and it has a wide application prospect.
Single Soot Particle Interference on Measuring SO2 Concentration Using NDIR
Authors: Zhao Yan Jun , Cheng Shou Guang , Qu Bin
Published: July 2013

The non-dispersive infrared absorption method (NDIR) is one of the important sulfur dioxide concentration measurement methods. If the soot particles are in the measurement light path, the original measurement light intensity is attenuated because of the soot particles absorption and scattering and the sulfur dioxide concentration is increasing, so the accuracy of the sulfur dioxide concentration is decreased. The single soot particle interference caused by the dissipative and the non-dissipative soot scattering and absorption is discussed in the paper. The numerical simulation results show that the sulfur dioxide concentration measurement accuracy is related to the soot particle diameter. The solution method is brought out and the measurement accuracy can be improved.
Acridine Red Spectrophotometric Determination of Trace IO3- Based on Formation of Associated Particles
Authors: Liu Qing Ye , Li Ting Sheng , Liang Ai Hui
Published: July 2013

Under the conditions of HCl-KI, acridine red (AR) has a max absorption peak at 540 nm, the max absorption peak of acridine orange (AO) at 480 nm. When there is IO3-, it reacts with excessive I-to form I3-. The AR and I3-all combine to form an association particle that caused the absorption decreasing. I03-concentration in the range of 5-90×10-7mol/L can be determined by the pectrophotometry.
Gradient Delay Correction for FSE-MRI
Authors: Ning Rui Peng , Yang Guang
Published: July 2013

In this paper, the impact of the gradient delay and its anisotropy on FSE-MRI was studied. It is shown by experiments that FSE imaging sequence is sensitive to uncorrected gradient delay. A simple correction method of this problem is proposed, in which the delay of the gradient waveform is compensated by shifting the gradient waveform directly. We have demonstrated that the proposed method is effective to overcome the image quality degradation cause by the gradient delay. The correction does not depend on specific samples or subjects and total delay can be used without recalibrating in each scan.
Concentration Phase Transition and Hysteresis Phenomena in Co-Nanofilms. Computer Data Processing and Simulation
Authors: Nefedev Konstantin V. , Kapitan Vitalii
Published: July 2013

The critical phenomena on cobalt monolayer films were studied by means of computersimulation. Proposed approach on the base of data of scanning tunneling microscopy gives possibilityestimate of critical concentration needed for concentration transition into ferromagnetic state. Assumptionabout presence of critical switching field allowed simulated hysteresis loops for given 1.5,2.0, 2.5 and 3.0 ML cobalt samples in frame of Ising model, which ones have qualitative agreementwith magnetometric data.
Impedance Measurements of Inertance Tubes for Pulse Tube Cryocoolers
Authors: Li S.S. , Wu Y.N.
Published: July 2013

The impedance of the inertance tubes which include the mass flows, pressure amplitudes and phase shifts between them at the inlet of the inertance tubes were measured by correcting the mass flows at the surface of the compressor piston. The experimental results are compared with the theoretical values based on simplified turbulent-flow thermoacoustic model. The wide range of impedance measurements with different inertance tube geometries and operating parameters enable us to summarize the general rules of their effects on impedance respectively, also the differences between the experiments and calculations can be used to modify the theoretical model.
Magnetizing Method for High Precision MFL Inspection of Longitudinal Defects of Thick Wall Steel Pipe
Authors: Feng Bo , Wu Jian Bo , Yang Yun , Kang Yi Hua
Published: July 2013

Circumferential magnetization of the thick wall steel pipe is carried out for the inspection of longitudinal defects in magnetic flux leakage testing. For high precision magnetic flux leakage testing, magnetic field distribution along the axial direction must be uniform, thus a new type of pole shoe structure is proposed in this paper to enlarge the uniformly magnetized area. Thick wall steel pipes are hard to be magnetized to near saturation, especially when the new pole shoe is used, which makes difficult for the magnetic sensors to pick up the magnetic leakage field. Therefore, the relationship between the magnetic flux density of the detection zone and the dimensions of the magnetizer has been studied by finite element simulation. These results are helpful in the design of circumferential magnetizer.
Study on Method and Device Used for Evaluating the Contamination Condition on the Surface of Composite Insulator
Authors: Song Lei , Zhang Fu Zeng , Liang Xi Dong
Published: July 2013

In this paper, method and device Used for evaluating the contamination condition on the surface of composite insulator was proposed. The method proposed in this paper considered the hydrophobicity and pollution degree on the surface of composite insulator at the same time. Under the condition of different basic Salt deposit density and different migration time the suitability of dissolution Salt deposit density method was studied. The test results show that the dissolution Salt deposit density with the increasing of migration time gradually reduced at the same basic Salt deposit density. The dissolution salt deposit density with the increasing of basic Salt deposit density gradually increases at the same migration time. It is found that the dissolution salt deposit density method proposed in this paper can well evaluate the contamination condition on the surface of composite insulator.
The Study for Common Mode Noise Suppression in Measuring Equipment Calibration
Authors: Niu Man Ke , Yang Bao Qiang , Lei Zheng Wei
Published: July 2013

The application of a variety of high-tech equipment, greatly improve the execute effectiveness of the equipment system. It plays a decisive role that internal parameters of the device is accurate or not, for the normal function used of these complex instrument systems. The importance of maintenance and calibration process for the test equipments accuracy must be reliable and accurate is increasingly obvious. The common mode noise suppression in equipment measurement and testing process is often encountered and must be solved in related field.
Investigation of the Crystal Defects in Synthesized Diamond by Synchrotron Radiation Topography
Authors: Yu Wan Li , Jia Xiao Peng , Yuan Qing Xi
Published: July 2013

Crystal defects in a large diamond crystal synthesized by high pressure and high temperature (HPHT) method were investigated by synchrotron radiation topography. Five bundles of dislocations were observed in the specimen. Two bundles of the dislocations are in the <100> direction and three of the others are extended at <110>. The Burgers vectors of the dislocations are different within the same bundle as the extinction hinted. The dislocations in <100> direction possess higher energy than the dislocations in <110> and {111}, so they are in the metastable state. The <100> dislocations has not been found in natural diamond yet. The reason of that was the great difference of the growth rate of synthetic and natural diamonds.
A Simulation Analysis Research on the Material Performance of Resin Concrete
Authors: Wang Bo , Lin Bin , Zhao Kun
Published: July 2013

A numerical analysis method of the thermal stability of the resin concrete is proposed in this paper. A 3D aggregate accumulation model based on the predecessors theory is established and a 2D cross section is directly captured from it. In order to simplify the analysis, a kind of conversion program is developed. The thermal expansion coefficient of established model is close to previous research results. It confirms the analysis method is correct. By the results, a reliable formula is found to calculate the thermal expansion coefficient and a method to reduce the thermal expansion coefficient of resin concrete is proposed.
Thermo-Mechanical Behavior of Epoxy Shape Memory Polymer
Authors: Gu Yu , Li Shao Xiong
Published: July 2013

The viscoelastic behaviors of shape memory polymers have a significant influence on the function realization of this kind of smart materials. In this study, stress-strain hysteresis under uniaxial tension of epoxy shape memory polymers with varied curing agent contents and types were tested at different temperatures. The effects of the testing temperature, curing-agent type and content on the viscoelastic behaviors of the materials were discussed.
Experimental Study of Cu-Al-Ni-Fe-Mn Aluminum Bronze Strengthen by Ce
Authors: Ji Jia Ming , Meng Guo Cui , Lu Yuan Yong , Wu Jing
Published: July 2013

Cu-Ce intermediate alloy was added to aluminum bronze alloy which contains Al, Ni, Fe and Mn to form a novel aluminum-bronze material of Cu-Al-Ni-Fe-Mn. The influence of the different concentrations of rare earth cerium on the mechanical properties, wear resistance and microstructures of as cast Cu-Al-Ni-Fe alloy has been investigated. The results indicate that the addition of an appropriate Ce content can effectively refine the microstructure and improve the tensile strength, ductility and wear resistance. When the alloy is added by 0.15% Ce, the grain is small, sleek and uniform distribution, the tensile strength, ductility and wear resistance of the alloy material can reach to the best performance, in which tensile strength is 731Mpa and elongation is 34%. However, when the rare earth cerium add to more than 0.20%, the block shape and shred of organization becomes large, which leads to the grain boundary roughening. The tensile strength, ductility and wear resistance are declining.
The Analysis of Mechanical Behavior for UMo/Al Dispersion Fuel on Different Fuel Volume and Burnup
Authors: Liu Xiao , Qian Da Zhi , Zhang Zhi Hua , Tang Bin
Published: July 2013

UMo/Al fuel is a typical dispersion fuel and is becoming a focus of research in many countries as it has higher density, better thermal conductivity and stronger irradiation resistance. According to the structure characteristics of dispersion nuclear fuel, the periodic unit model is established and the mechanical behavior for UMo/Al dispersion fuel on different fuel volume and burnup is simulated by ANSYS software. The results show that maximum stress occurs in the middle of fuel plate. With the fuel volume fraction increasing, the risk of rupture of fuel plate corresponding increase. It reveal the mechanism of irradiation failure for dispersion fuel plate and the results can be demonstrated by the sample figure of irradiation.
Preparation of Molybdenum Coating on Surface of SiC Particles by Sol-Gel Method
Authors: Li Shun , Zhu Meng Jian , Liu Meng , Bai Shu Xin
Published: July 2013

The preparation of molybdenum coating on the SiC particles has been investigated with sol-gel method. The results show that SiC particles with molybdenum coating are gained after two-stage hydrogen reduction process, using ammonium molybdate tetrahydrate as raw material.
Thermal Fatigue Behavior of a Nickel-Base Directionally Solidified Superalloy
Authors: Zhao Kai , Jiang Hai Jun , Lin He , Yang Jun He , Chen Jian
Published: July 2013

Thermal fatigue behavior of a nickel-base directionally solidified superalloy was investigated using the notched flaky specimen. The da/dN K curve and da/dN-a relationship has been applied to analyze the thermal stress.
Comparative on Wear Behavior of Nitrocarburized Low-Cost GDL-4 High Speed Steel to the Vane of Air Conditioning
Authors: Mu Zi Guo , Lei Min , Liang Yi Long , Peng De Yin , Tang Deng Wei
Published: July 2013

The manufacture materials of air conditioner compressor vane require the properties of proficient red hardness and wear behavior. So the surface nitriding treatment is usually used in the production process of the high speed steel. Under 300N, the wear behavior of low-cost GDL-4 high speed steel, M2 high speed steel, and 11Cr17 stainless steel have been soft nitride processed with the same way was studied. The results show that the wear behavior performance of GDL-4 steel is much superior to M2 steel and 11Cr17 stainless steel after soft nitriding process and the surface hardness of nitro-carburized steel has an important influence on wear behavior.
FEA Based Wind Loads Analysis for the Main Steel Structure of Bucket Wheel Stacker-Reclaimer
Authors: Shang Peng , Zhang Xiao Guang , Xu Bo , Li Yong Cong , Guan Yu Ming
Published: July 2013

Bucket wheel stacker-reclaimer is widely used in the field of material engineering machinery. Because of its working environment is very bad, it has higher requirements on its safety and reliability. Wind load calculations are necessary to ensure of the Static mechanical behavior. This paper mainly studied the main steel structure in a condition of no-load and maximum load work conditions and add the effects of the wind whose speed is about 20 m/s, At last all the stresses and strains were calculated based on FEA method.
Effect of Different Tempering Processes on Microstructure and Hardness of Q690 Steel
Authors: Zhao Li Ping , Zhang Hui Min , Liu Wen , Yu Wen
Published: July 2013

Q690 steel was the research object in this test. The traditional tempering and induction tempering were used in this experiment after quenching. By studying the microstructure and hardness of the sample at the two different tempering processes, it can be concluded that there are more carbide precipitations in the microstructure and the microstructure of the sample is more uniform when the tempering temperature was 450°C. For same tempering temperature, the carbide dispersion, uniformity of the microstructure and retained austenite transformation are all better in 5mm depth range to sample surface, and the hardness of the sample is lower after induction tempering. So it can be see that not only the heating up speed is faster, the energy can be saved more, but also the microstructure is more homogeneous, the mechanical property is improved greater, in a relatively short period by induction tempering rather than traditional tempering. But because of the skin effect, the microstructure distribution of the tempering layer is uneven with the increased of sample thickness, so in order to achieve the homogenizing, one of the effective methods is to improve heating affected zone according reduction the power supply frequency of induction tempering.
The Research for the 3D Morphology Measurement of Large-Scale Object by Using Digital Projection Speckle Correlation Method (DPSCM)
Authors: Pan Xiao Ou , Han Jie , Wang Qiang , Fu Ji Song , Liu Jian Nan
Published: July 2013

The Digital Projection Speckle Correlation Method (DPSCM) is a non-contact full-field optical 3D profile and deformation measurement technique, which combines with 2D Digital Image Correlation Method (DICM), using LCD projector to produce random speckle that is projected on the surface of the sample.In this paper,the 3D profile and deformation measurement experiment of large-scale objects is finished by DPSCM,and the factor which influences the result of experiment is also discussed
Research on the Step by Step Sliding Mode Variable Structure Adaptive Control
Authors: Hu Xu Xiao , Chen Han Tao , Chen Gang , Xu Xin Rong
Published: July 2013

In order to increase the control precision in meeting the robust request, a step by step sliding mode variable structure adaptive control strategy is presented in accordance with kind of two order time-invariant controlled object. Because the chatter amplitude is decreased when the system cuts in the position of equilibrium by the small peak-to-peak value, the mathematical model is firstly established and using the adaptive algorithm determined the control quantity to achieve the target value, then uses by the step by step method about, in the proper attention to both rapidity and robustness, reduces the peak-to-peak value deviation gradually which cuts, thus obtains the high control precision.
Risk Assessment for Niclosamide Residues in Water and Sediments from Nan Ji Shan Island within Poyang Lake Region, China
Authors: Huang Dong Gen , Zhen Jian Hui , Quan Shui Qing , Liu Miao , Liu Lei
Published: July 2013

The objective of this study was to determine and assess niclosamide residue levels in the Nan Ji Shan island within Poyang Lake Region, from March to June, September, October and December of 2012. Water and sediment samples from the Nan Ji Shan island were extracted with alkaline ethylacetate,and were detected by high performance liquid chromatography (HPLC). Niclosamide residues were detected in all water and sediment samples in varying concentrations during the two periods using molluscicide, niclosamide residues concentration water samples ranged from 0.01 to 0.038 mg/L, and from 0.1 to 0.473 mg/kg in sediments. According to the guidelines for potential risk assessment drawn up by the US Environmental Protection Agency, the risk of niclosamide residue was assessed. The results indicated that it would cause greater effect on fish, invertebrates and aquatic plants, but the influence on human and avian was relatively smaller.
Design of Laboratory Type Ring Inflatable Flotation Machine
Authors: Yang Lin Lin , Tang Xiu Ying , Shi Jie , Zou Huan , Wang Xi
Published: July 2013

This paper summarized the current advantages and disadvantages of flotation column, put forward a new type of flotation device - ring inflatable flotation machine, the overall structure of the device has been designed and patented. The study of the ring inflatable flotation machine has the advantages of low energy consumption and little abrasion, inflation rate, the probability of attachment and collision is high of mineral particles and air bubbles, selection and sweep the election time and frequency adjustment flexibility and large size range of separation.
Main Structural Design and Motion Simulation of Stacker Reclaimer Based on Virtual Prototype Technology
Authors: Shang Peng , Cui Zhi Ping , Zang Wen Tao , Song Shao Wen , Guan Yu Ming
Published: July 2013

In the paper, the main structural of the bucket wheel stacker reclaimer was designed based on Virtual Prototype Technology. Firstly the bucket wheel stacker reclaimer was built by using 3D design software Solidworks. Then the static analysis of the main structure was done by using FEA method. Then the motion simulation was finished by using Adams, and the velocity curve was described. In the paper, the main structural design and motion simulation was done efficiently based on a series of Virtual Prototype Technology such as parametric modeling, FEA method and motion simulation. The superiority of virtual prototype technology in the design of large engineering equipment is obvious.
Experimental Investigation and Finite Element Analysis on Concrete-Filled Steel Tubular Gusset Plate Connections
Authors: Duan Wen Feng , Liu Chang , Cao Bao Zhu
Published: July 2013

The use of concrete-filled steel tubes in different areas of construction is becoming an attractive solution because of its remarkable performance. It provides not only an increase in the load carrying capacity but also good seismic behaviour. It is often adopted as compression member especially for structure under large axial pressure. Concrete-filled steel tubular composite truss can be used as main load-bearing structure of long-span and mega structure. But the composite trusses were connected by mutually intersecting joints which the welding construction process is complicated and the quality is unstable. Therefore, gusset plate joints are more suitable. So experimental study and finite element analysis are carried out in 12 specimens. Test results indicate that bearing capacity of hollow circular steel tube joints filled with concrete is provided obviously, and local buckling performance of steel tube under gusset plate is also improved. In order to study the mechanical performance and interaction of steel tube and core concrete, the ANSYS program is adopted in finite element analysis. And the analysis results is agreed well with the test. Regression analysis is carried out at the same time, thus simplified calculated formula of this type joints is concluded which can give reference for the designers.
Application and Numerical Simulation of Advanced Small Pipes Grouting in Tunnel Engineering
Authors: Xu Su Chao , Liu T.Y.
Published: July 2013

Advance support is an effective anchoring method in the tunnel construction especially for the tunnels getting through the weak and broken rock mass. However, the supporting effectiveness can hardly be predicted due to the design which is mainly relying on experiences. In this paper, the supporting mechanism and theory of advanced small pipes used in worse geological tunnel is analyzed and numerical simulation has been done using FLAC3D for Hongshigou tunnel. Finally, the effectiveness and rationality of advanced small pipes technique is evaluated.
Axial Bearing Capacity of Steel Reinforced Concrete Short Column with Double Circular Steel Tubes
Authors: Wang Juan , Zhao Jun Hai , Wu Sai , Li Nan
Published: July 2013

Based on the twin shear unified strength theory, analyzing the condition of load for the steel tube and the core-concrete under tri-axial compression, the formula of axial bearing capacity of steel reinforced concrete short column with double circular steel tubes was established and the influencing factors on it were discussed. By the comparison between the results calculated by the formula and the test results, it shows good agreement. Meanwhile, applying the formula to an engineering example, good agreement can be found in the comparison between the calculation in this paper and finite element analysis result in relevant literature. The conclusions can provide a reference for the engineering design.
A New Approach of PWM Modulation of Improving Low-Frequency Characteristics of Inverter
Authors: Zhang Hao , Feng Jing , Song Xin Ran
Published: July 2013

In this paper, some commonly used algorithms of PWM inverter were described, and the analysis of the influence of SVPWM algorithm on low-frequency characteristics of inverter was given, then a new PWM algorithm to improve low frequency characteristics of inverter was introduced and simulation and performance analysis of the two algorithms were given.
Optimization of Photovoltaic Grid-Connected Inverter System
Authors: Wu Xing Quan , Li Qiu Peng , Li Yan
Published: July 2013

In order to increase the stability of grid connection of photovoltaic plant, effort has been made to study the grid connection principle of photovoltaic plant, mathematical model of grid-connected photovoltaic inverter and power grid distributed parameters, and improve traditional space vector control theory to keep d axis of d-q rotating coordinates consistent with the rotating space vector of network voltage and realize decoupling control over active power and reactive power of grid-connected photovoltaic system, through real-time detection of fluctuations in grid-connected current and network voltage, get voltage current dual-loop to place feedback control, which effectively compensates the modulating signal of inverter, reduces photovoltaic grid-connected output voltage and current harmonics so that the system has better robustness, and improves the reliability of grid connection.
Study of Inductance-Coupling-RFID Tag's Quality Factor
Authors: Liu Cai Feng , Yan Fu Gui , Lu Di Feng , Mei Yang
Published: July 2013

To improve the read performance of RFID tags,improve the quality factor is very important. Firstly,from theory and practical, confirmed that quality factor Q is very important for RFID tags,a higher Q means the tag could have a good performance. Then,through calculations and simulation,analysis the influence factors of Q. With simulation figures show that length, width, space, thickness of the tags coil all affect the Q,but when manufacturing of tags , the control of manufacturing quality and accuracy is very difficultly. Finally, shows many figures about tags manufacturing quality and accuracy of manufacturing which have lower Q and badly read performance.
Study on Green Gas Data Detection System
Authors: Zhang Feng Ying , Gao Yun Hua
Published: July 2013

This paper describes a wireless gas data detection system, based on CC1010 MCU as the core controller design measurement circuit of indoor air quality. IF in the air pollutants such as smokes and doors, TGS gas sensor sensitive to perceived pollutants transferred to the receiving device through the wireless function after CC1010 MCU treatment analysis. The system has the function of wireless data transmission, small size, high sensitivity, good stability, low cost, long life and other advantages of the peripheral circuits required little devices can be widely used in enclosed spaces such as indoor, automobile air pollution detection.
Design and Analysis of a Vibration-Based Magnetoelectric Energy Harvesting Device
Authors: Zhang Zhang , Dai Xian Zhi , Wang Yong
Published: July 2013

An energy harvester is presented to harvest ambient vibration energy using a cantilever beam and multiple Terfenol-D/PMN-PT/Terfenol-D laminate magnetoelectric transducers. The harvester uses eight magnets to make up a magnetic circuit arranged on the free end of the cantilever beam. The magnetic circuit can produce a high gradient magnetic field space. The multiple transducers are placed at the high magnetic field gradient position to make the best use of the magnetic field produced by the magnets. The nonlinear vibration and electrical-output performances of the harvester at resonance are analyzed. The theoretical results indicate that the prototype can produce a load power of 7.619 mW, which is sufficient to supply low consumption wireless sensor nodes.
Comprehensive Post-Evaluation Model on Wind Power
Authors: Wu Yun Na , Chen Wen Jun , Li Yang
Published: July 2013

Chinese wind power has undergone a rapid development under the support from government and technology progress, which caused a discordant situation with the backward of its post-evaluation work. Currently, a comprehensive post-evaluation index system and evaluation methods has not been established, the result of current evaluation cannot help the decision-making for the follow-up projects and the further improvement of the operational status of wind farm. However, since the end of 2010, there are more and more problems exposed in wind powers development. It is necessary to develop a comprehensive and scientific post-evaluation on Chinese wind power project. This research contains two parts, the first part constructed a whole-process post-evaluation model on wind power project, the second part developed a target completion degree post-evaluation model from terms of cost, quality, schedule, safety and environment. What is more, the literature about wind power project evaluation was analyzed in this paper.
A Modified Bubble Electrospinning for Fabrication of Nanofibers
Authors: Kong Hai Yan , He Ji Huan
Published: July 2013

This paper suggests a new method for fabrication of nanofibers with polymer liquid membrane, which is produced by a metal ring rotating through the polymer solution. The thickness of the produced membrane is thin and suitable for nanomaterial fabrication. In this paper the membrane is to form a polymer bubble by blowing air under the presence of a high electronic field, and multiple jets eject when the bubble is ruptured. The effect of applied voltage on the fiber diameter is studied.
Preparation and Characterization of Nanoparticle Reinforced Polyactides Composite
Authors: Ching Yern Chee , Rosiyah Y. Yahya , Li Garlie
Published: July 2013

Polylactides (PLA) based composite films modified with nanoclay content ranges from 0-30 wt% were fabricated using solvent casting method and the mechanical properties, water vapor permeability, oxygen barrier, thermal stability and optical properties were studied. The study showed that the addition of up to 15 wt% of clay has caused a significant improvement of tensile strength of the PLA/nanoclay composite film. However, the further increasing of nanoclay content of >15 wt% of nanoclay has caused a significant reduction in tensile, elongation at break and optical properties of PLA matrix. Both the oxygen and water permeability of the PLA/nanoclay composite film decrease with the increasing of nanoclay contents. Greater water barrier properties would be achieved if the high nanoclay contents of 10-30 wt% were dispersed homogenous within the PLA matrix. The addition of nanoclay greater than 10 wt% affected the appearance of the film (i.e. increasing the haze and ΔE). Thermal analysis result has proved that the melting temperature, crystallization temperature and glass transition temperature of the composite film only slightly affected by the addition of nanoclay due to the immobilization polymer chain in the composite film.
Energy Absorption in Gold Nanoshells
Authors: Liu C.H. , Li B.Q.
Published: July 2013

A modeling study on energy absorption and transport in an isolated nanoshell and aggregates of nanoshells under localized surface plasma resonance (SPR) conditions is presented. A comprehensive model for multi-scattering of electromagnetic waves by a cluster of multilayered nanoshells is developed, which applies the Wigner-Eckart theorem for the calculation of the total scattering cross sessions of nanoshell aggregates. Absorption by an isolated nanoshell and by nanoshell clusters is studied using the model. Results show that the inter-nanoshell coupling results in strong field enhancement near the particle surface. Energy absorption in a nanoshell can be tuned by varying the structural parameters of the nanoshell. Smaller particles are more absorbing than the large ones, other conditions being equal. Because of the presence of a dielectric cavity, the radial distribution of the absorbed power in the metal shell may differ from the classical skin depth phenomena. The interaction among particles in close proximity causes the energy absorption efficiency and the resonance position of a nanoshell cluster to differ from those of an isolated nanoshell.
Electrochemical Properties of Fe2O3/Ga2O3 Composite Electrodes for Lithium-Ion Batteries
Authors: Ishizaki Haruo , Kijima Norihito , Yoshinaga Masashi , Akimoto Junji
Published: July 2013

Fe2O3/Ga2O3 composite and GaFeO3 electrodes worked as rechargeable electrode materials for lithium-ion batteries, whereas their capacities were gradually decreased with increasing of cycle number. The initial Li insertion capacities (cut-off voltage: 0.01 V) were 1643 mAh/g for Fe2O3/Ga2O3 composite and 1196 mAh/g for GaFeO3, respectively. Despite same Fe/Ga atomic ratio, Fe2O3/Ga2O3 composite showed a higher capacity than that of GaFeO3 over the 50 cycles.
Crystal Growth and Characterization of (Bi0.5Na0.5)TiO3-BaTiO3 Single Crystals Obtained by the Top-Seeded Solution Growth Method under High-Pressure Oxygen Atmosphere
Authors: Onozuka Hiroaki , Kitanaka Yuuki , Noguchi Yuji , Miyayama Masaru
Published: July 2013

A single crystal of ferroelectric 0.88(Bi,Na)TiO30.12BaTiO3 (BNTBT) solid solution with tetragonal P4mm structure was grown by the top-seeded solution growth (TSSG) method at a high oxygen pressure (PO2) of 0.9 MPa. The crystals grown by the high-PO2 TSSG method exhibited a large remanent polarization (Pr) of 54 μC/cm2, which leads to a spontaneous polarization of 54 μC/cm2. The large Pr compared with that of crystals grown at PO2 = 0.1 MPa is suggested to originate from a low oxygen vacancy concentration for the crystals grown at a higher PO2. The high-PO2 TSSG method was demonstrated to be effective for obtaining BNTBT crystals with superior polarization and piezoelectric properties.
Preparation and Dielectric Property of BaTiO3 Nanoparticles by Salt-Assisted Spray Pyrolysis
Authors: Shimizu Nobutaka , Myoujin Kenichi , Kodera Takayuki , Ogihara Takashi
Published: July 2013

BaTiO3 nanopowders were prepared by salt-assisted spray pyrolysis using a flux of KNO3 and NaNO3. Compounds of metal sources are thermally decomposed in the melting flux. Some flux mixtures make a eutectic composition because of the reduced melting point of the flux. The optimum temperature for the preparation of BaTiO3 nanoparticles was 700 °C. When both KNO3 and NaNO3 were used as the flux, the average particle size of the BaTiO3 powders was 40 nm, and the particle distribution was broad. On the other hand, when only KNO3 was used, the average size of BaTiO3 powders was 60 nm, and the particle distribution was narrow. This suggested that the sodium ions in the BaTiO3 nanoparticles led to a broad particle distribution. X-ray diffraction (XRD) revealed that all the diffraction peaks were in agreement with the crystal phase of BaTiO3. The relative density of the sintered body of BaTiO3 powders was 87 %. The relative dielectric constant of the sintered body was 1180, and the dielectric loss (tanδ) was 0.023 at room temperature. This suggested that the residual potassium ions in the BaTiO3 nanoparticles led to a reduction in the relative density and dielectric constant.
Microstructure and Piezoelectric Properties of BaTiO3-Bi(Mg1/2Ti1/2)O3-BiFeO3 Ceramics
Authors: Mitsui Ryuta , Fujii Ichiro , Nakashima Kouichi , Kumada Nobuhiro , Watanabe Takayuki , Shimada Mikio , Hayashi Jumpei , Yabuta Hisato , Kubota Makoto , Fukui Tetsuro , Kuroiwa Yoshihiro , Wada Satoshi
Published: July 2013

Barium titanate (BaTiO3, BT)-bismuth magnesium titanate (Bi (Mg1/2Ti1/2)O3, BMT)-bismuth ferrite (BiFeO3, BF) solid solution ceramics were prepared using a conventional solidstate synthesis, and their piezoelectric properties and microstructure were investigated. Strain electric field curves of the 0.3BT-0.1BMT-0.6BF ceramics with a single perovskite phase were ferroelectric butterfly-like curves. A strain maximum / electric field maximum (Smax/Emax) was 330 pm/V. Transmission electron microscopy revealed ferroelectric-like domain structure in the 0.3BT-0.1BMT-0.6BF ceramics.
Control and Monitor Model of the Critical State of Corporate Strategic Decision Making Based on the Chaotic Neural Networks
Authors: Wang Wei , Fan Yan Wei , Qi Xiu Hui
Published: July 2013

Timely strategic decision-making is an important guarantee for corporate to remain invincible in the competition. This paper sorts out the current researches of the control of the strategic decision-making, proposes the processing model to control the critical state of the strategic decision making as well as the judging methods, and determines the best timing to apply the chaotic neural network control for the strategic decision making on the basis of constructing the index controlling system, so that the accurate control for the corporate strategic decision making can be achieved.
Research on the Synergy of “Big Q” System
Authors: Li J.J.
Published: July 2013

Big Q system of enterprise is a complex management system, which includes several sub-systems, and it suggests that the concept of “Big Q” should be formed in response to the needs of the growing situation through analyzing evolution in quality concept in this paper. Then, the intension and characteristics of big Q synergetic concept are proposed by analyzing the characteristics of the big Q system. Based on these studies, the relationship between the synergetic model of big Q and environment is explored, and the synergetic mechanism of the Big Q system is dissected by means of mathematical analysis. To be effective, the big quality system must be studied deeply. By applying the theory of self-organizing to study the big quality system, we can generalize features, characteristics and operation rules of the big quality system. So we can manage the big quality system scientifically and effectively to obtain an optimal function of the system.
Adaptive Dynamic Clone Selection Strategy for Optimization
Authors: Wu Hong Bing , Lou Pei Huang , Tang Dun Bing
Published: July 2013

Based on the Antibody Clonal Selection Theory of immunology, an adaptive dynamic clone select algorithm is put forward. The new algorithm is intended to integrate the local searching with the global and the probability evolution searching with the stochastic searching. Compared with other algorithms, the new algorithm prevents prematurely more effectively and has high convergence speed. Numeric experiments of function optimization indicate that the new algorithm is effective and useful.
Research on the High-Efficiency Turning Tool for Rough Machining of Large Hydrogenated Cylindrical Shell Forging
Authors: He Geng Huang , Liu Xian Li , Yan Fu Gang
Published: July 2013

The large hydrogenated cylindrical shell is an important part of petrochemical pressure vessels. From the macroscopic aspects, the influence that the surface defects of the large hydrogenated cylindrical shells forging blank has on the high efficiency machining was analyzed in the paper firstly. Then, through the chemical point of view, the new chemical components of the shells material were known, and the shells material physical properties were also dissected. The phenomenon of compatibility between the Co element which is in tools material and the siderophile element of the 2.25Cr-1Mo-0.25V steel which is the material of the large hydrogenated cylindrical shell was found. Therefore, the technical performance requirements of the heavy-duty turning tool which is to achieve the goal of high efficiency cutting were put forward. Through researching the chemical and the physical properties of the shell, the new high-efficiency turning tool was designed from the aspects of the tools material and the tools geometric structure. Finally, the comparative test between the new heavy-duty turning tool which was named XF8 and the YT5 tool which was being used in factory was made, and by way of comparing both the service life and the chip-breaking performance of XF8 with YT5s, the test results showed that the XF8 met the requirements of high-efficiency heavy-duty turning, and the feasibility of the tools design scheme was further verified.
Design of Control System of GPS-Based Tower Clock
Authors: Wei Hong , Zhou Guo Ping , Ding Jian Wen
Published: July 2013

The design consists of STC89C51 MCU, the GPS15-XL receivers, LED display, servo motors, voice timekeeping and other components .And it is the GPS control system for tower clock, with timekeeping, display, automatic error correction functions. The design captures accurate time information from satellites by GPS15XL-W receiver chip, and collects and deals with time information received from SCM. And then it adjusts the clock. The SCM system consists master clock, and drives the secondary clock through giving out pulse to a servo motor. The system can also achieve the automatic error correction after power on, to change inconvenience of the traditional correction, reduce the mechanical errors. And the tower clock accurate up to ±1µs. There is no cumulative error.
Study of the Statistical Models with Contact Parameters of Machine Tool Guideway Rough Surface
Authors: Hu Ya Hui , Chen Shi Gang , Wang Lei , He Zhi Xiang
Published: July 2013

Friction and wear of the guideway is an important factor which affects its precision, the parameter which affects friction and wear performance is no single. Among them, surface precision of the guideway has a great influence on the wear. In this paper, Taylor Hobson roughness profilometer is used to measure the guideway specimen according to the principle of statistics, and then the surface topography assessment parameters are obtained. Based on those, the rough surface topography is characterized and statistical models with contact parameters are established. Contact models are analyzed by using simulation software Mat lathe results: the contact parameter values show linear growth trend as the distance decreasing, the values become smaller as the roughness increasing, but the trend increases corresponsive.
Design of Biomass Fuels Molding Equipment
Authors: Wang Yong , Qiao Hong Jiao , Shen Wei , Zhang Teng
Published: July 2013

The manufacture equipment is the key technology in using crop stalks for making biomass fuel which is an effective means of solving the current stalk misconduct processing, improving energy efficiency and preserving the ecological environment. A structure of the molding equipment which is capable of making crop stalks into biomass fuel is designed and orthogonal tested. The hydraulic system and electrical control system of the equipment are also designed. Simulation test of the hydraulic system and programming of the control circuit are implemented. The analyses of the each designed systems of the modeling equipment indicated that the main motor is reasonably chosen, the hydraulic system can meet the design requirements, and the electrical control circuit is capable of being conveniently and efficiently controlled.
Detection and Quantitative Assessment of Damages in Beam Structures Using Frequency and Stiffness Changes
Authors: Gillich Gilbert Rainer , Praisach Zeno Iosif
Published: July 2013

This paper is concerned with vibration based non-destructive evaluation of structures, with a focus on quantitative assessment of damage. In previous works, a reliable method to locate open cracks in beams has been proposed and tested using both data from numerical simulations and laboratory experiments. It bases on the fact the natural frequency of a bending vibrations mode attend different changes, depending on the loss of stored energy for the slice on which the damage is located. As bigger the mode shape curvature value on that location, so bigger the loss of stored energy and consequently the natural frequency decrease in that mode. Analyzing the natural frequency changes for a larger series of vibration modes, it’s possible to precisely locate damages. The authors succeed to find a single mathematical relation describing the frequency changes for all bending vibration modes, involving one term defining damage’s location and one defining its depth. While the first term changes for different modes, being defined by the mode shape curvature, the second maintain its value for all modes, being affected just by damage depth. This finding permits decoupling the location issue with that of quantitative assessment of damage. Latest researches, presented in this paper, succeed by finding the relation between the second term of the relation and some mechanical characteristics of the beam, i.e. extending the proposed method by including evaluation of damage severity. The approach is illustrated on a cantilever beam, modeled with 3D elements.