bluuebunny/crossref_metadata_2025 huggingface dataset:
Supply Chain Controllable Costs Management and Strategy Analysis
Authors: Sun Hong Fei , Li Wei Xia , Tang Qing Song
Published: October 2013

With the globalization of economic development, the competition between the enterprises becomes more intense. If you want to have a survival advantage in the fierce competition, you must find ways to achieve high efficiency and low cost strategy. But simply to raise revenue or simply to cut costs can't satisfy the requirement of enterprise survival and development. Therefore, to increase income and reduce cost, the combination of both, become the first background of enterprise development. The concept of supply chain cost management meets the requirement of this strategy. Diversity of the concept of supply chain, and constant adjustment along with the market determines the supply chain cost management is comprehensive and complicated system engineering.
Discuss the Fault Disposal of Wind Vane and Anemometer of MW Wind Turbine
Authors: Yu Tao , Xu Shu Qin
Published: October 2013

In order to ensure maximum effectiveness of wind turbines, the cabin must be accurate to the wind, only wind turbine impeller in the normal direction and the wind direction is agreed upon, to ensure that the wind turbine power absorption maximum, to ensure the normal operation of fan safety and full use of wind resources. Therefore, the wind vane and anemometer in the wind turbine system plays an important role, this study focused on the gold 1.5MW wind turbine with wind vane and anemometer common fault..
Chaotic Motions of a Damped and Driven Morse Oscillator
Authors: Zhou Liang Qiang , Chen Fang Qi
Published: October 2013

With the Melnikov method and numerical methods, this paper investigate the chaotic motions of a damped and driven morse oscillator. The critical curves separating the chaotic and non-chaotic regions are obtained, which demonstrate that when the Morse spectroscopic term is fixed, for the case of large values of the period of the excitation, the critical value for chaotic motions decreases as the dissociation energy increases; while for the case of small values of the period of the excitation, the critical value for chaotic motions increases as the dissociation energy increases. It is also shown that when the dissociation energy is fixed, the critical value for chaotic motions always increase as the dissociation energy increases for any value of the period of the excitation. Some new dynamical phenomena are presented for this model. Numerical results verify the analytical ones.
Substrate Stiffness as a Regulator in Catalyzing Integrin-Mediated Cell Adhesion Nucleation: A Mechanochemical Model
Authors: Peng Xiao Ling
Published: October 2013

We provide here a simplified mechanochemical model to describe the role of substrate stiffness in mediating the chemical reactions between integrins on cell membrane and ligands immobilized on the substrate. By taking into account the energy input for integrin activation on a compliant substrate, Our simulation shows that integrin activation and the downstream integrin clustering can be regulated by substrate stiffness in a value-dependent manner, which is consistent with previous experimental studies.
Estimation of Measures of Effectiveness (MOE) for the C-Roundabouts
Authors: Guerrieri Marco , Corriere Ferdinando
Published: October 2013

The C-roundabout (cyclist roundabout) is a new multi-lane roundabout designed to improve the safety of cyclists at and make multi-lane roundabouts more cyclist-friendly. The geometric layout of C-Roundabouts allows the decrease of the vehicle speeds through the roundabout to around 30 km/h. The rare C-roundabout installations so far implemented in the world have not allowed analysing the capacity by means empirical data. In the light of this considerations, the main objective of the paper is to give a theoretical closed-form model for evaluation the measures of effectiveness MOE (capacity, delay, queues) of the C-Roundabouts.
Orthogonal Expansion Method of Random Processes for Fluctuating Pressure of Water Flow
Authors: Ye En Li , Zhou Yi Hong
Published: October 2013

Combining with its auto-correlation function, the stochastic process of water flows fluctuating pressure is decomposed on the trigonometric bases by employing an expansion method based on normalized orthogonal bases which is prescribed, and thus establish an incentive model for the random dynamic response analysis of structures vibrated by water flows fluctuating pressure. By using the model, main probabilistic characters of the flows stochastic process are captured with only a few random variables, and therefore laid the foundation for further random response and reliability analysis from the point of probability density evolution. By using it in an instance, the validity of the model is tested from the aspect of second order statistics such as sampling ensemble power spectrum and sample mean square error. The effects of simulation duration and expansion numbers needed on the simulations efficiency and accuracy are also discussed.
A New Type of Phase-to-Phase Spacer
Authors: Kong Wei , Wang Yu Xin , Wang Yan Song
Published: October 2013

In order to reduce the damage caused by conductor galloping, this paper developed a new type of phase to-phase spacer, called shape memory alloy of phase to-phase spacer. Hanging the sensor on the transmission line fixed with new type of phase to-phase spacer and the ordinary phase to-phase spacer respectively, use the sensor to measure the amplitude of the two types of phase to-phase spacer, comparing and analysing the two types of phase to-phase spacer. Through the analysis of the data, we can draw a conclusion that the new type of phase to-phase spacer has a better damping effect than the ordinary phase to-phase spacer, it can reduce the damage caused by conductor galloping more effectively, this research is the first in the domestic.
Microstructure and Properties of High Performance Steels by Controlled Rolling
Authors: Zhu Yue Bin , Wang Xue Min
Published: October 2013

High performancesteels (HPS) require low yield ratio, high uniform elongation and high low temperature impact toughness in addition to higher strength. In this paper,experimental steelswere produced by controlled rolling and tempering to meet high performance requirements. Itwasconcluded that experimental steels by controlled rolling and tempering had similar performance with quenched and tempered steel (QT).
Study on Fabrication and Fast Switching of High Voltage SiC JFET
Authors: Chen Gang , Bai Song , Huang Run Hua , Tao Yong Hong , Liu Ao
Published: October 2013

SiC devices have excellent properties such as ultra low loss, high withstand voltage, large capacity, high frequency, and high temperature operation compared with Si devices. The SiC JFET is expected to be appropriate for the power device because a JFET has no oxide-semiconductor interface in the channel region and does not use the low mobility SiC MOSFET inversion layer as a channel. Forward I-V up to 4A for SiC VJFET, Gate voltage from 2V to 3.5V by step 0.5V. Reverse I-V characteristics up to 4500V (VG=-8V) for SiC VJFET, Gate voltage from-4V to-8V by step-2V. Turn-off characteristics are studied and fast turn-off time of 136ns at room temperature under DC voltage of 600V is successfully demonstrated.
Synthesis and In Vitro Anti-Inflammatory Activity of Pyrrolo[1,2-A]pyrazines via Pd-Catalyzed Intermolecular Cyclization Reaction
Authors: Zhou Yan Mei , Wei Yong , Yang Jin , Li Hai Hai , Liu Miao Deng , Huang Nian Yu
Published: October 2013

Pyrrolo [1,2-a] pyrazine possessed widely bioactivities due to its particular structure. In this work, three pyrrolo [1,2-a] pyrazines derivatives were synthesized from the 2-bromo-5-methoxypyrazine and propargyl amines or ethers through the Pd-catalyzed intermolecular cycloisomerization strategy. Their structures were characterized by NMR, IR, EI-MS and elemental analysis, and all of them exhibited moderatein vitroanti-inflammatory effects with the inhibitions of 43-59% against IL-6 at 50 μM. The compound3crevealed relatively good anti-inflammatory activities. The bioactive pyrrolo [1,2-a] pyrazines might be potentially used as anti-inflammatory agents.
Adsorption Ability of SDS Intercalated ZnAL-LDH and MgFe-LDH on Simulated Organic Amine
Authors: Xu Li Nan , Meng Zi Lin , Lv Feng Zhu , Zhang Yi He
Published: October 2013

Hexadecyl trimethyl ammonium bromide (CTAB) was used as simulated substance of organic amine wastewater, the adsorption of sodium dodecyl sulfate (SDS) intercalated ZnAl-LDH and MgFe-LDH [ZnAl (SDS)-LDH and MgFe (SDS)-LDH] on it are studied. These two kinds of LDHs all have good adsorption ability on CTAB, the COD removal degree of ZnAl (SDS)-LDH and MgFe (SDS)-LDH on CTAB can be high up to 94% and 96% due to the static electric attraction and the hydrophobic interaction between the SDS and CTAB.
Selective Synthesis of 2-Substituted and 1,2-Disubstituted Benzimidazoles
Authors: Wang Cheng Jun , Gong Shan Shan , Sun Qi
Published: October 2013

Two synthetic methods based on ZrCl4-catalyzed and microwave-assisted conditions have been developed for the selective and efficient synthesis of 1,2-disubstituted and 2-substituted benzimidazoles.
A Novel Synthesis of Protected Nucleoside 5'-Phosphoromorpholidates
Authors: Ding Hai Xin , Gong Shan Shan , Sun Qi
Published: October 2013

A general synthesis of nucleoside 5'-phosphoromorpholidates from carboxybenzyl-protected nucleosides has been developed. Phosphitylation, acid-catalyzed hydrolysis, and oxidative coupling generated the phosphomorpholidate products in high yields.
Study on Photochromic Materials with Photochromic and Optical Storage Composite Properties of a Novel Diarylethene
Authors: Song Jun Jie , Li Xue , Liu Gang
Published: October 2013

A new unsymmetrical isomeric photochromic diarylethene, 1-[2-methyl-3-naphthalen-2-[2-methyl-5-(10-phenanthrenyl)-3-thienyperfluorocyclopentene, was designed and synthesized. Its photochromic and fluorescent properties were also investigated in detail. The compound exhibited excellent photochromism, changing from colorless to red after irradiation with UV light both in solution and in PMMA film. Furthermore, the fluorescence intensity of the photochromic diarylethene1adeclined remarkably, when irradiation with UV light.
Experimental Study on Ammonia-Nitrogen Removal in Water by Composite Zeolite Filter
Authors: Fan Li Sha , Yu Yan Zhen , Zhao Chun Hui
Published: October 2013

Using composite zeolite filter material independent preparation in the laboratory as an aeration biological filter material,and compared with ceramsite.The ammonia-nitrogen adsorption capacity of the above two filters were evaluated through the pilot test. The start-up of pilot scale CBAF (BAF filled with compound filter material) showed that the average NH4+-N removal rate of the first 5 days was 52.36% when the average influent NH4+-N concentration was 37mg/L. In steady operation condition, the average NH4+-N removal rate reached 83.51% and the average effluent NH4+-N concentration was 5.81mg/L, which could meet the first degree of national wastewater discharge standard (GB 8978-1996).
The Study on the Dissolution Process of Oxygen and Nitrogen in Gas-Soluble Water
Authors: Fan Yu Guang , Han Jian , Li Jing Ming , Chen Bing , Zhou San Ping
Published: October 2013

In air flotation process, different gas produce different gas content of gas-soluble water. According to the difference of solubility of nitrogen and oxygen in water, the affect of the difference of molecule structures between nitrogen and oxygen on their solubility in water was discussed in the paper. Then, Two types of gas dissolution in water was introduced in the paper---gap filling and hydration. The concept of effective gap degree was proposed. And According to the effective gap degrees and hydration coefficient of nitrogen and oxygen, the change rules of the dissolved amount of oxygen and nitrogen by each type of dissolution at different temperature were obtained through a series of data fitting calculation by using Matlab. Finally, the reason for the change of the amount of gap filling and hydration in gas-soluble water caused by temperature change was also analyzed in the paper.
Study on the Giant Magnetostrictive Materials with Actuator Displacement Model Parameter Identification
Authors: Deng Jia
Published: October 2013

Accurate identification of model parameters is to improve the giant magnetostrictive precision displacement control key, For single algorithm is difficult to achieve for giant magnetostrictive hysteresis nonlinear model parameters accurately identify problems, in this paper, the genetic algorithm and simulated annealing algorithm fusion, First, quick search ability of genetic algorithm are used to get a better community, recycle kick ability of simulated annealing algorithm to to adjust and optimize the whole group, Presented an improved genetic simulated annealing algorithm, And its application to the giant magnetostrictive actuator displacement hysteresis nonlinear model parameter identification. The algorithm combines the advantages of genetic algorithm and simulated annealing algorithm, both the faster convergence speed, and improves the precision and quality of the optimal solution.
Study on the Control Method of Flood Limited Water Level in Danjiangkou Reservoir
Authors: Tang Wen Jian , Ren Liang , Xu Hui , Hu Bo , Ding Zhan Feng , Nie Wen Ting
Published: October 2013

The contradiction between water shortage and social needs has become an important factor restricting economic development. As freshwater, flood could be used as the natural resources to resolve the problem of water shortage, and also has some environmental benefits. Taking Danjiangkou reservoir as example, we adopt dynamic control method of limited water level to discuss the potential socioeconomic benefits of flood utilization.
An Analysis on the Differences of Regional Energy Efficiency in China - The Empirical Study Based on Theil Index
Authors: Zhang Shi Xiang , Ning Ya Dong
Published: October 2013

This paper divides Chinas 30 provinces into eastern region, central region and western region, uses the energy intensity as an index to analyze energy efficiency from 1995 to 2010 in China and take the empirical study in regional differences of energy efficiency by Theil index. The results of this research indicate that the total, within-region and between-region difference of energy efficiency are all constantly reducing in China. There is a rapid decrease of the total difference and within-region difference of energy efficiency. The total difference mainly consists of within-regional difference. The within-region differences of energy efficiency in the three regions are not the same. To be specific, the difference in the eastern and central regions decreases, while the difference in the western region is showing some characteristics of fluctuation.
Experimental Study on the Solar Energy and Pebble Thermal Storage Technology for Storing Heat
Authors: Cao Ping , Liu Wei , Wu Bao Wei
Published: October 2013

Solar energy heating technology has a widely used in the construction, The main obstacle in applicationis how to make solar energy become the continuous and steady source of heat, to ensure all-weather continuous heating, the key is how to store and release the heat energy collected by the solar collector slowly. Ningxia yinchen solar energy technology limited company combine the solar collectors and underground pebble heat storage layer, used it in single-layer local-style dwelling houses in the countryside, Through the field test, the system can keep a very stable indoor temperature throughout in Sunny days when the outdoor temperature was minus 10 °C above, there has enough heat storage capacity to meet the requirements of indoor heating at a two cloudy days after sunny, but if More than 3 days are cloudy, auxiliary heating should be carried out using auxiliary heat source. The experimental results show that this method is simple and regenerative effect is significant.
Study on Construction Materials with Energy Saving Analysis of Architectural Design in Liangshan
Authors: Xiong Mei
Published: October 2013

The constraints of resources and environment in China are more and more intense. The 12th Five-Year Plan requires that energy saving must be considered in the architectural design. Liangshan has special climate and sunshine. Therefore, the Government of Liangshan requires that building energy saving must be started from the stage of architectural design. Building energy efficiency must be considered from several aspects, such as architectural layout, wall structure, windows and doors, roof structure, external sun-shading, and construction materials.
Determination of Hexachlorocyclohexane (HCH) in Panax notoginseng of Chinese Traditional Medicine by Gas Chromatography/Mass Spectrometry
Authors: Wu Na , Zhou Bo , Yan He Ping , Xu Shi Juan , Long Yun Hui , Liu Wei
Published: October 2013

A novel method was developed for the determination of HCH in Panax Notoginseng of Chinese traditional medicine by ultrasonic extraction (UE) coupled with Gel Permeation Chromatography and Gas Chromatography/Mass spectrometry. Some important parameters that influence the extraction and purification efficiency were investigated. The optimum condition Panax Notoginseng of Chinese traditional medicine was extracted with dichloromethane about 20mL, extracting times and extracting time were one and 30min. The extracts were cleaned up by Gel Permeation Chromatography, and determined by Gas Chromatography /Mass spectrometry. Under the optimum condition, the mean recoveries of the method were 83.23%, the relative standard deviations (RSD) were 3.45%, which has been under the demand of the determination of HCH in Panax Notoginseng of Chinese traditional medicine.
Study on Industrialization of Mid-Low Grade Collophanite Flotation in Yunnan Province
Authors: Liu Jun Bo , Liu Quan Jun , Xiao Hong , Deng Rong Dong
Published: October 2013

Efficient reagents were used in the direct-reverse flotation process to process the mid-low grade Si-Ca collophanite. We got nice results in the laboratory experiment and expanding test. These results showed that our study was successful in technology, economy and environment effect. It also offers support for building flotation mill in future.
Research on the Performance of Plaster Material by Chemical Foaming Method
Authors: Wang Hong Xia , Liu Bo , Yuan Kuang Ping , Duan Wu Biao , Yang Fei Hua , Guo Jian Ping
Published: October 2013

The paper introduces a kind of foaming plaster with main raw material of α- gypsum, which is produced by utilizing the chemical reaction principles H2O2 was decomposed. Meanwhile，study the changes of density，flexural strength and compressive strength of plaster material performance with the additives in different ratio. The result showed that water-cement ratio, H2O2 foaming agent and water temperature all affect the performance of the foaming plaster.
Numerical Simulation of Pressurization Scheme of Gas Well in Jingbian Gas Field
Authors: Du Bao Chao , Yang Ling
Published: October 2013

With the exploitation of Jingbian Gas Field for decades, the formation energy gradually decreasing, and the wellhead pressure of some gas wells were found approaching to the pressure of gathering pipe network. Furthermore, some wellhead pressure can not make the produced natural gas get into the gathering pipe network. S well block of Jingbian Gas Field was set as the research object, applied numerical simulation method to create a new three dimensional geological model for gas reservoir of S well block, and then matched the reserves of gas reservoir and productivity parameters of gas well; applied the orthogonal test method design a variety of charging scheme and simulated every scheme; finally, decided an applicative pressurization scheme for gas well of S well block in Jingbian Gas Field.
Effect of Biological Materials Including Sucrose and Bacteria Ratios on the Fermentation of Goat Yogurt
Authors: Chen He , Shu Guo Wei , Li Chuan Na , Wang Chang Feng
Published: October 2013

Effect of biological materials including sucrose concentration and bacteria ratios on fermentation of goat yogurt was studied by measuring acidity, pH and viable counts. Sucrose concentration (v/v) was 4%, 6%, 8%, 10% and 12%. The ratios ofLactobacillus bulgaricusandStreptococcus thermophiluswere 1:3, 1:2, 1:1, 2:1 and 3:1, respectively. The results were as follows: lower or higher sucrose concentration and bacteria ratios resulted in adversely influence on overall properties of goat yogurt. The optimum sucrose concentration in goat milk was 8% and bacteria ratios were 2:1, respectively.
Research on Impermeable-Materials with the Elastic Wave CT Image Reconstruction of Quality of Cutoff Wall Based on SIRT Algorithm
Authors: Yang Lei , Li Chang Zheng
Published: October 2013

take the travel time distribution of elastic wave of engineering medium acquired by using elastic wave CT technology when the engineering quality testing as the research object, select the SIRT technology to complete inversion of wave velocity data to construct distribution image of wave velocity. The main content of the research is inversion techniques of CT data. Key technology is to introduce Fluorescence Molecular Tomography based on ray equation or wave equation, and carry out the iterative reconstruction of data, calculate the travel time distribution of elastic wave in the project media into wave velocity distribution, so that the image has a clearer description about detected object. Establish a set of elastic wave CT data imaging inversion platform, and make the CT image reflect the actual project quality more realistically through image optimizing.
The Material Mechanism Analysis of Airliner Forced Landing onto Water
Authors: Sun Zhen Li , Du Jun Jun , Liu Chao , Li Meng Yu , Zhang She Sheng
Published: October 2013

The paper concentrates on the material mechanism analysis of airliner landing onto water in slide decelerating stage. According to the solid material, the difference equation is constructed to find the posture of airliner with different angles Our numerical results show that the impact of stormy wave may make airliner out of balance, impact acceleration is inversely proportional to the sliding distance,
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A New Image Fusion Method Based on Improved PCNN and Multiscale Decomposition
Authors: Wang Nian Yi , Wang Wei Lan , Guo Xiao Ran
Published: October 2013

A new image fusion algorithm based on nonsubsampled contourlet transform and spiking cortical model is proposed in this paper. Considering the human visual system characteristics, two different fusion rules are used to fuse the low and high frequency sub-bands of nonsubsampled contourlet transform respectively. A new maximum selection rule is defined to fuse low frequency coefficients. Spatial frequency is used for the fusion rule of high frequency coefficients. Experimental results demonstrate the effectiveness of the proposed fusion method.
Research on the Enhancement and Processing of Faint Laser Signal in Foggy Conditions
Authors: Yao Guo Zhong , Ai Li Si , Shen Li Zhong , Wang Gui Yong
Published: October 2013

For the echo of the laser signal was relatively weak and accompanied by a lot of noise in a foggy condition, a multi-pulse cumulative method for enhancing weak laser signal was proposed. The enhancement principle and method of multi-pulse signal accumulation was studied, and with it the weak signal was processed. The matched filter algorithm was used to extract the characteristics of laser echo signal, the original signal and the accumulated signal was processed by the matched filter, respectively, which greatly improves the signal to noise ratio (SNR). The experimental results show that: four separate laser signals accumulated together enhance SNR by twice; the accumulation of multi-pulse laser signal can effectively improve SNR, and the matched filter can strengthen the signal while suppressing noise.
Design and Implementation of a Management Information System of Equipment Based on RFID
Authors: Qiu Li Jun , Wen Jun , Cai Hong Zhuan
Published: October 2013

This paper designs a meet the requirements of equipment management information system, to realize the scientific management of instruments and equipments. Based on RFID technology, database technology, information processing and transmission technology, we aimed to systemize the management over the equipment. Test results show that the system design is reasonable, stable and reliable, this system realizes information exchange between the electronic tag and the database through the serial port and the corresponding submodule, and is easy to use, powerful and comprehensive in security measures. Conclusion: This system greatly improved the efficiency of the management in equipments, enabled the information management of equipments more accurate and standardized.
Novel Design Method for Realization of Consistency Checking for a Class of Non-Linear Filters Based on Point Selection Technique
Authors: Wang Yu Zhe , Zhang Ru Bo , Liu Guan Qun , Wu Jun Wei
Published: October 2013

This paper proposed a novel design method for a special kind of non-linear filters based on building block technique. Due to the introduction of such technique, the filter was successfully separated from the math model of the specific problem to be investigated thus can be designed independently. The difficult but important task of checking the correctness of the deigned filter was solved for a class of non-linear filters based on point selection technique. Simulation results proved the correctness and the effectiveness of the proposed design method.
The Study on the Test Model about the Electromagnetic Inductive Communicating Signal Quality
Authors: Li Zhi Jian , Zhao Xiao Li , Liu Qiu Sheng , Wang Jing Bin
Published: October 2013

The article analyzes the quality checkout methods of different signals, carrying on the concrete analysis at the concrete characteristic about the signal of electromagnetic inductive communicating. Analyze the quality circumstances of waveform with the input / export signal contrast, and environmental influencing factors like power supply voltage and metal environment, transmission distance and electromagnetic environment could lead to transmit without thread fail, Get a mathematical model which can directly perceived the signal quality state with the threshold value law establishment.
Time-Frequency Characteristics of Vibration Signals Analysis for Large Instantaneous Impact Mill Rolling Based on Wavelet Packet
Authors: Xiao Qi Jun , Luo Zhong Hui
Published: October 2013

The wavelet packet decomposition and reconstruction technique is applied to time-frequency analysis of bite steel impact vibration signal by big rolling machine, it is obtained the bite steel impact signal wave packet. According to the size of the wavelet packet energy, it is reconstructed the signal of No.1 and No.2 wavelet packet. According to reconstruction of the signal time domain waveform and FFT spectrum chart, some meaningful conclusions are obtained.
Analysis of the Impact Caused by Residential Users Distributed Photovoltaic Grid-Connected on Distribution Network
Authors: Chen Song Fang , Lin Fan Tao , Zhao Sha , Bai Jing Fen , Tong Rui Ming
Published: October 2013

With more and more wide application of distributed power generation system, it is necessary to explore its impact on the power grid. The first residential user of distributed photovoltaic power generation system in China has recently connected to the power grid. A series of experiments were carried out by State grid metering center to detect status of the residential users system. The testing method of distributed photovoltaic power generation system and the results of field test are briefly introduced in this paper. Through the analysis of the test results, the characteristics of photovoltaic power generation system are discussed, in order to carry out further research of measurement technology.
Study the Coupling Characteristics of Line Defects and Point Defects in Photonic Crystals
Authors: Li Wei , Zhu Shou Wei
Published: October 2013

In order to filter, we use the coupling methods of line defects and point defects in photonic crystals to verity through theories and experimentations, get micro-cavity center frequency and wavelength of the main waveguide frequency resonance, and the same frequency lights will enter micro-cavity. Results show waveguides and micro-cavity can support its modes within in their deficiencies, but defects still can transfer energies through the evanescent coupling, the evanescent coupling is the role of the photonic crystals to the integration of device.
Automatic Allocation Algorithm of Holographic Correlation Peaks Based on Neighborhood Variance
Authors: Tian Qing , Meng Fan Wei
Published: October 2013

To increase the quality of holographic correlation peaks, near stoichiometric Mg:Fe:LiNbO3crystals is used as memory and correlator due to its better uniformity and optical quality. A correlation peaks allocation algorithm based on neighborhood variance increment is presented, which is on the foundation of neighborhood entropy. This algorithm not only can distinguish target from edge texture, but also is not influenced by background intensity. With 1000 holograms stored, it takes less than 4 seconds to allocate correlation peaks accurately against correlation output image with 1024×768 pixels, and a satisfied recognition result is also achieved.
The Design of 5V/100W High Frequency Switching Power Supply
Authors: Cai Hong Zhuan , Bai Li
Published: October 2013

Switching power supply is an important field of application of power electronic technology, the high frequency switching DC power supply with high efficiency, small size, light weight and other advantages obtain the widespread application. The application of synchronous rectifier technology, photoelectric coupling isolation technology and the active clamp forward converter design high frequency switching power supply with 16~40V DC input and 5V/100W DC output . its operational principle is analyzed, and using LM5026 control chip describes design method of switching power supply.
Underwater Target Tracking Algorithm Based on an Improved Color Matching
Authors: Sun Ling Yu , Li Ming Ming , Wang Zhao
Published: October 2013

Owing to fuzzy detail and distortion of underwater image and complex changes of target, the underwater target tracking system requires accuracy and continuity of tracking, and expects that the size of tracking window can adapt to appearance change of target. According to the requirements mentioned above, the underwater target tracking algorithm based on an improved color matching is proposed, which finds the best location of target through tracking accuracy algorithm and calculates width of window on the basis of tracking window size variation algorithm. The experimental results show that this algorithm can adaptively track the real-time target and has higher accuracy than traditional color matching algorithm.
MCCB Instantaneous Calibration Current Error Decomposition and Control Method
Authors: Wang Jin Wei , Du Tai Hang
Published: October 2013

The dissertation focuses on the limited calibration accuracy of breaker instantaneous problems,explains the reasons for calibration current error.It expounds the current amplitude error,as well as the decomposition method for non-periodic component error.Meanwhile,this dissertation proposes calibration current evaluation methods and successive approximation control methods.It demonstrates the feasibility of this method,by adopting theoretical analysis and simulation.It has been proved through practical application that the method is used to eliminate current error and enhance breaker instantaneous calibration accuracy.
The Power Loss and Efficiency Analysis of a 3DOFs Planetary Gear Box
Authors: Yin Hua Bing , Li Shen Long , Zhang He , Zhao Xin Yuan , Zhang Jin
Published: October 2013

The power loss and efficiency model of a planetary gear transmission system was built with a system modeling method. The method takes many transmission elements such as gear, planetary gear sets, hydraulic torque converter, friction disk, lubrication, sealing, bump and motor etc. into consideration and calculates non-load and load power loss for each element. The overall calculated power loss and efficiency is more accurate than the meshing power method. To make simulation more reliable it is compared with the test data. In the paper some planetary gearbox is selected and its power loss and efficiency were measured from the experiment. The power loss and efficiency of each gear of the planetary gearbox are compared and verified and corresponds well with the test data. The power loss error drop from 10% to 5% with the system method compared with meshing power method. It shows that the system method for power loss and efficiency analysis is more reliable. It provides important basis for engineers to improve design and reduces the power losses. It provides solutions to increase the planetary gear transmission efficiency and finally makes the whole vehicle lighter and the power density higher than before.
The Effects of Leakage on Friction Loss over a Rotating Disk
Authors: Zhang Xue Jing , Fei Zhen Tao
Published: October 2013

The internal flow fields of liquids in space between casing and rotating disk have been obtained by using CFD.The curves of shear stress on the disk and static pressure on casing wall against radius are also gained in various viscosity and different leakage conditions.The results indicate that the shear stress is influenced significantly by the leakage in the space.The shear stress on the disk decreases with the increase of leakage,especially in small radius.However, the reduction rate of stress gets smaller with the increasing of liquid viscosity.The greater the viscosity is, the higher the shear stress is.The growth of shear stress along the direction of radius is greater than in small viscosity.
Finite Element Method for Solving Bucking Load of Semi-Rigid Steel Frame
Authors: Cheng Hua Hu , Li Ai Min , Guan Ming Wen , Yang Xian Wei , Luo Jing
Published: October 2013

Took two layers of single span lateral sway semi-rigid connecting steel frame to bear vertical load function as the research object, adopting finite element method for solving the bucking load of the whole losing the stability of the semi-rigid connecting steel frame. Using based on the energy method and the three parabolic interpolation deflection curve function to obtain the relationship between the both element ends of internal force and displacement and introducing semi-rigid beam element stiffness matrix and geometric stiffness matrix of element integrate the global stiffness matrix which contains the flexibility of the connections and the component geometry nonlinear, thus deducing the stability characteristic equation of semi-rigid steel frame. And the MATLAB language composition program is applied to calculate the buckling load of overall losing stability of the semi-rigid steel frame, thus obtaining the buckling load of semi-rigid steel frame. The method is a very effective numerical calculating method which can solve the stability problems of relatively complicated stress conditions or relatively complicated structure composition conditions and it can also satisfy the requirement of higher calculation accuracy, easy for programming and calculation and of great practicability.
Research on Vibro-Acoustic Characteristics of Underwater Finite Plate-Shell Structure under Multiple Excitations
Authors: Zhu Yong Yong
Published: October 2013

An analysis based on the first kind of Lagranges equations was presented for investigating the vibration and acoustic radiation of underwater finite cylindrical shell with interior plate under multiple excitations. The strain energy and kinetic energy of cylinder and plate were gained by the theory of plates and shells, and the potential energy of excitation and fluid loading was found based on acoustic-vibration coupling, and the connection conditions of plate and cylinder were expressed by Lagrange multipliers, then the vibro-acoustic equations of finite cylinder with interior plate under shafting excitation were established. The influences of excitations and plates position to the vibro-acoustic characteristics were studied by the equations. The results show that the frequency components of plate-shell structure are more complex. For the double excitations on plate, the distance between excitations is larger, the average velocity and sound radiation power are lower, while the radiation efficiency is larger. The modeling and analytical methods adopted in this paper are also available for more complex composite structure.
Grinding Wheel Dynamic Balance Weight Type System Based on the Self-Optimal Fuzzy Control
Authors: Ma Hai Tao , Ma Shu Fan , Yu Ying , Chen Feng
Published: October 2013

.Grinding wheel as the research object in this paper and aim at the vibration signal use the weight balance principle to balance the centrifugal force caused by the eccentric whee. Designed a kind of self-optimization fuzzy controller, through online optimization correction factor realized the control rules of self-adjustment and self-improvement. Not only solved the problem of relying on the Precise mathematical mode as the conventional control system,but also make the control system has automatic adaptation for the changes of the object properties.Experimental results show that:the effect of the correct balance amount and the grinding wheel unbalance correction offset is good, the vibration drop rate reached 93.2%, has played a good role in inhibition of unbalance, the grinder vibration quantity significantly reduced and improved the performance of the control system.
Numerical Simulation and Optimization of Radial Heat Pipe Heat Exchanger Based on Field Synergy Principle
Authors: Liu Qing Yun , Tu Fu Bing , Gao Sheng Yang
Published: October 2013

This paper mainly explores the numerical simulation of flow and temperature fields in the shell-side of the radial heat pipe heat exchangers (HPHE), using CFD software-FLUENT. Field synergy principle is applied to analyze heat and mass transfer mechanism of heat exchangers; also, the influence of the variation of principle constructor parameters of heat exchangers on the field synergy effect and heat exchange performance has been studied. It has been found that better performance of heat exchangers is achieved with better field synergy effect; in the context of increasing transverse and longitudinal tube pitches within certain values of data, the heat transfer coefficient decreases as synergy angle increases. Variation of fin height has little effect on synergy angle, but it would decrease the heat transfer coefficient at unit pressure drop (k/Δp) as it increases; as fin pitch increases, the synergy angle first decreases and then grows, while k/Δp first increases and then decreases. The optimal ranges of heat exchanger structure parameters values were found.
Study of Voids in the Flexible RFID Tag Inlays Packaged by Anisotropic Conductive Adhesive
Authors: Fan Shou Yuan , Chen Jian Kui , Yin Zhou Ping , Wang Yu Hui
Published: October 2013

RFID is recognized one of the most potential information technologies. The RFID tag is a small tag containing an integrated circuit chip and an antenna. Voids can very often be detected in the non-metalized area of the RFID tags, they generated with unpredictable size and located randomly in the tag. The formation of the voids is the combined action of material properties and bonding parameters. In this work, the formation of the material related voids in the tags was investigated by thermogravimetric analysis. All specimens showed continuous loss of mass to varying degrees during the heating process. The air and moisture entrapped in the polymer matrix in the fabrication process and the process of use are the mainly reason. The loss mass of the etched antenna substrate primarily came from the lamination adhesive has not cured completely. With the simultaneous reaction of thermal stresses and internal vapor/volatile gas pressure drives both pre-existing and newly nucleated voids to grow. In addition, the voids growth under the high temperature (85°C) and high humidity (85%RH) conditions was investigated. The characteristic size of voids increases gradually with the increasing aging time because of the combined effects of the residual stress and the different coefficients of thermal expansion and moisture expansion.
Design and Analysis of Rack-Torsional Hydraulic Straightening Machine
Authors: Wang Shou Cheng , Wang Yuan , Wang Meng , Chen He Nan
Published: October 2013

The rack always gets deformation in torsion after hobbing, it effects machining accuracy and performance. This paper is proposed to analyze the reason of deformation, combined with a series of technical requirements, furthermore rack-torsional hydraulic straightening machine is designed and researched. By using Simulation module in Solidworks to complete finite element analysis of key components, so the expected design requirements of the system can be ensured.
The Analysis of Rotary Kiln Thermal Characteristics Based on ANSYS and FLUENT
Authors: Song Xiao Yan , Fan Qin
Published: October 2013

In this paper, the FLUENT finite element software is used to simulation analyze the rotary kiln, kiln gas combustion process and gas-solid coupling effect. The kiln and rotary kiln of gas temperature field is calculated and then imported into the ANSYS software as an initial condition to complete the reconstruction of the temperature field and using the node interpolation method to carry out thermal stress analysis. Through the joint simulation analysis based on FLUENT and ANSYS finite element software, the analysis of rotary kiln combustion process, the heat transfer and the mechanical response of the structure can be implemented under the same condition, making the simulation results of rotary kiln more related to practical operation conditions. The method and results presented have significant theoretical guidance for the research and development of new types of rotary kiln.
Study on Simulating the Temperature Field of P110 Oil Case for Quenching by Finite Element Method
Authors: Zhou Yang , Ou Yang Ba Sheng , Chen Bao Zhou
Published: October 2013

This essay direct at quenching craft of P110 oil case, makes 25MnV steel as study objective, considers geometric symmetry of oil case, analyzes chemical component of oil case, measures thermal conductivity, specific heat and convection coefficient, simulates the temperature field of the quenching oil case by finite element software, and receives the temperature field distribution and the change along thickness, the result closes to the date of fact. This is reference to establishment and prediction of quenching craft and next research of residual stress of quenched oil case.
Development of Visualize Simulation System of Jet Milling Process
Authors: Cui Yan
Published: October 2013

A methodology of the establishment of a jet milling process visualizion simulation system is proposed. A specific analysis method of jet milling process is built with the LS-DYNA system featured ANSYS software.It has been put forward that the rate loss of part particles could be replaced by the rate loss of the whole particle flow in proportion and the result is proved through experiments.3DS Max software was used to build the visualize system. The caculation applicability and the error range of the simulation system for different kinds of particle are concluded by comparing the simulation results and the actual grinding results.
Numerical Simulation of New Class-Honeycomb Sandwich Structure's Core
Authors: Li Xiang , Yu Li Cheng , Zhou You Hui , Li Yang , Zhang Xun
Published: October 2013

As the sandwich structure materials extensively used in the engineering field, the existing sandwich structure materials can not meet the requirements of engineering design gradually. New sandwich structural materials with efficient, energy-saving and easy processing need to be developed urgently. Relying on the mature research results now on honeycomb sandwich structure, the class-honeycomb sandwich structure is put forward for the first time, meanwhile, innovate configuration in the structure. Based on this, the paper analyzes the mechanics properties of the structure and the results showed that the new class-honeycomb sandwich structures mechanics properties have improved greatly compared with the original hexagonal honeycomb sandwich structure. And also simulation analysis was carried out on the cores structure. The validity of the equivalent elastic constant is confirmed through the theoretical analysis and simulation analysis. For this reason, it has great theoretical significance and engineering application value.
Reliability Index Calculation of Lateral Load Bearing Single-Piles Based on ANSYS
Authors: Zhang Ruo Yin , Zhu Feng , Lu Zong Ze , Zhang Yue
Published: October 2013

At present, it is scarcely possible to represent results in deterministic calculation in the definite finite element analysis. Stochastic finite element method is on the basis of the combination of mathematical statistics and the finite element method. Then we can use mathematical statistics to analyze the randomness of the parameters, get the data of dependent displacement and stress, and finally calculate all kinds of features. In this paper, modeling and calculation function and unique PDS module offered by ANSYS are applied to analyze the reliability of lateral load bearing single-piles.
Testing and Evaluation of Baby Walkers Based on Product Injury Data
Authors: Feng Yong Qin , Yin Yan , Zhang Xiao Rui , Xiao Jin jian
Published: October 2013

The injury characteristics of baby walkers were analyzed based on injury data about baby walkers from the National Electronic Injury Surveillance System (NEISS) of U.S. and the National Injury Related Products Surveillance System (NISS) of China. The main causes for the baby walkers injuries were identified by testing and evaluation, including insufficient anti-collision space, low designed static and dynamic strength, substandard outsourced casters and the processing technique not in conformity with the requirements for accessible parts. Such suggestions were put forward as increasing the anti-collision space, enhancing the strength of structural materials, performing stricter acceptance check for the outsourced casters and confirming the process inspection of semi-finished products.
On Elastic-Plastic Explosives for Explosive Hardening
Authors: Hu Xiao Yan , Shen Zhao Wu , Liu Ying Bin , liu Tian Sheng
Published: October 2013

In order to improve the effect of explosive hardening and reduce the production cost, the elastic-plastic explosive which consists of RDX, rubber, deterrent, antioxidant and plasticizer was prepared. The experiments including density testing, detonation performance, detonation velocity testing, impact sensitivity, and explosive hardening were carried out. The results show that the density of the elastic-plastic explosive is 1.46g/cm3, the detonation velocity is 6670m/s, the impact sensitivity is 28% and the elastic-plastic explosive can be detonated reliably by a detonator. The explosion hardening on Hadfield steel makes the hardness increased from 187HB to 362HB, which increases by 93.5%.
The Research of Public Rental System with Electric Car
Authors: Chen Jia Ming , Wang Li Xia , Ni Ying Li
Published: October 2013

Charging mode of electric car and parking facilities have been studied. The mechanical spatial car parking system with electric car charging system has been studied and developed. Facility is controlled by PLC .The lease management system of parking facilities adopts inductive card, wireless charging system and charging state monitoring technology. The intelligent and automatic lease as an effective path to improve the hard problem of the city parking will get the vast development foreground.