bluuebunny/crossref_metadata_2025 huggingface dataset:
Sequential Engagement and Disengagement Drive Mechanism Instruction Device Design of Offset Press
Authors: Bao Wei Cheng , Chen Hong , Yang Chun Lei
Published: June 2013

According to the process characteristics of sequential engagement and disengagement mechanism of offset press, a teaching device of sequential engagement and disengagement mechanism with double cylinders double stroke drive mechanisms was designed. By means of simplifying the mechanism and using complex polar coordinates vector method, the mathematical modeling of the mechanism was built. The related parameter curve of the mechanism was drawn with MATLAB software. And through MATLAB optimization toolbox, the optimized design of the mechanism was carried on, the sequential engagement and disengagement drive mechanism teaching device design of offset press was improved.
Signal Denoising Method Based on KICA by Noise Components
Authors: Jiang Ling Li , Li Ping , Zeng Bo
Published: June 2013

Denoising is an essential part of fault signal analysis. This paper proposes a kernel independent component analysis (KICA)-based denoising method for removing the noise from vibration signal. By introducing noise components of the observed signal, one-dimensional observed signal is extended to multi-dimensional signal. Then performing KICA on multidimensional signal, the noise in the observed signal consistent with the introduced noise will be removed that achieve the purpose of denosing. The effectiveness of the proposed method is demonstrated by the case study.
Study of Detection Technique in Forecasting Outburst Hazard in Mine Working Face
Authors: Lü Xiu Jiang , Geng Mei Hua , Fang Xin Liang , Gao Tian Bao , Du Jiang Ming
Published: June 2013

To describe the progress of detection technique used to forecast outburst hazard of mine working surface in recent years in China, its research and application were reviewed in this paper. The detection techniques include contact type detection technique and non-contact type detection technique. The principles, methods and application of major detection techniques in two categories were investigated. Field application approves that contact type detection technique had an advantage over non-contact type one for a long time because contact type detection technique has the advantage of processing mass data fast and easily. And along with the fast development of detection technique, non-contact type detection technique has seen considerable expansion within the past few years. The advantage and disadvantage of these two types were analyzed. The combination of the two types not only achieves higher forecasting accuracy rates but also reduces the total detected workload. Furthermore, detection technique will play a greater role in forecasting outburst hazard.
Research of Comprehensive Protection Device in Underground Coal Mine Lighting Power Grid
Authors: Dan Xu
Published: June 2013

In view of the present our country underground lighting power grid comprehensive protection device existing problems, this paper introduces a DSP-based long distance lighting comprehensive protection device. Short-circuit protection using adaptive random setting mode. Leakage protection using additional DC measurement theory.The device has the function of cable insulation level, the network current is monitored real-time and grid parameters are displayed in turn, which make the protection system more perfect and reliable.
Design of Height Measuring Instrument Based on Ultrasonic Waveform
Authors: Zhang Tao , Ai Yong Le , Zhang Hai Yang
Published: June 2013

The modular design is adopted in the whole circuit. The AT89S52 single chip microcomputer (SCM) is used as the main part of the controller. The hardware circuit mainly contains ultrasonic emission-receiving module HC-SR04, temperature detecting circuit, liquid crystal display (LCD) circuit and alarm circuit. Signals of the emission probe and the receiving probe are synthetically analyzed by using SCM. The purpose of measuring the body height is realized by using the time difference between two times receiving ultrasonic wave. and it has the advantages of low cost, easily measuring, and short measuring time. The accuracy of the system can be reached to 1 cm, and the measurement range is between 0.50 m and 4.00 m, which can completely meet the design requirement of height measuring system.
Analysis of the Fault Diagnosis Method to Coal Mine Electrical Control Circuit
Authors: Li Ming
Published: June 2013

At this stage it is electrical automation of coal industry with a rapid development period, the degree of automation is also more and more high, therefore, the electric control circuit requirements will be getting higher and higher, in such circumstances to improve coal mine electrical control circuit fault diagnosis and maintenance is very important. Based on the above factors, this article on the electrical control circuit repair process as the research object, how to carry on fault diagnosis are analyzed, in combination with the associated data and real work experience, put forward to some suitable methods of diagnosis, and these methods have a careful introduction, hope that through this article related to this, future electrical maintenance work to provide some help.
Research of Characteristics Extraction Based on Dynamic Pressure Signal
Authors: Liu Wei , Liu Hong Zhao
Published: June 2013

The accuracy of pattern recognition was determined by the feature selection, and two methods of the characteristic description were discussed. The results show that the statistical characteristics could be used as a dynamic pressure signal descriptor, and the oscillation characteristic of curve is not suitable for describing dynamic pressure signal by itself. The selection of descriptors of dynamic pressure signal is the precondition to identify the leak signal and the non-leak signal effectively.
Research on Fault Diagnosis Model of Tank Equipment
Authors: Zhang Zeng , Yang Ming , Dong Bao Liang , Wang Xiao Bo
Published: June 2013

Taking the common fault to a certain type of short-wave radio as an example, Bayesian network, expert system and BP neural network theory were used to construct three intelligent fault diagnosis models, respectively by Genie, CLIPS and MATLAB software simulation. The results show that the three intelligent fault diagnosis method compared with the traditional method, a rapid and accurate diagnostic performance model can be extended to other communications and electronic equipment fault diagnosis.
Study on Energy Conservation and Consumption Reduction
Authors: Wang Qiu Hong
Published: June 2013

In this paper, according to the requirements on energy conservation and emissions reduction, the theoretical foundation for the essence, objective and elements of energy accounting is introduced around energy conservation and consumption reduction, and also energy accounting is elaborated from expenditure expensing and capitalization, recording and accounting, and information disclosure.
Research on Digital Phase Difference Measuring Instrument
Authors: Wu Wei Hua
Published: June 2013

The paper presents the digital phase measuring instrument based on MSP430 single-chip microcomputer. The instrument adopted the technology of DDS to generate sinusoidal signal, and FPGA to achieve phase difference measurement and polarity judgment. The system is composed of a filtering circuit, a phase shifting network, a shaping circuit, matrix keyboard, LCD display module and the frequency is in the range from 200Hz to 10kHz, the phase difference is in the range of-180°~+180 °, the resolution ratio is 0.1°, the absolute error is less than ±2 °, and the relative error is less than ± 3%.
Research on the Gray Balance of Ink-Jet Printing Based on G7
Authors: Wang Zhen Rong , Tang Wan You
Published: June 2013

To confirm that parameters to control gray balance in G7 are whether apply to ink-jet printing. On the theoretical basis of ink-jet printing principle, gray balance control method and the G7 specification, through designs the test sheet and prints it with digital ink-jet printer, then, measures the parameters in G7 which influence the gray balance effects. The experimental results show that the data come from the test sheet is basically consistent with G7 standard data in neutral grey density of HR, HC, SC. Moreover, the neutral grey in CMY overprint and monochromatic K can be well matched. All above results indicated that G7 can effectively monitor the gray balance of digital ink-jet printing.
Next Generation of Human-Computer Interaction Technology Based on Kinect
Authors: Teng Zhen Fang
Published: June 2013

Kinect marks the arrival of the era of body feeling interaction, which strides over a big step to the ultimate goal of the human-computer interaction (natural user interface). The Kinect is introduced in the aspects of composition, operation principle, function, development mode. In addition, the latest application examples in the fields except for games are also told. So, it has certain theoretical research and practical application value for the researchers and engineers that are eager for studying Kinect technology.
Study on the Discharge Performance that the High Barium Ferrite as the Electrochemical Properties of Super-Iron Battery Cathode Active Material
Authors: Feng Jin Lai
Published: June 2013

The super-iron battery has a green, voltage stability and high-energy characteristics, but the stability is one of the key issues restricting its development. We select high barium ferrite as the active material of the cathode material, research on the stability of sodium silicate (Na 2 SiO 3 · 9H 2 O) and potassium permanganate (KMnO 4) as synthetic additives, the battery and its discharge properties. The study showed that the adding 0.2g sodium silicate barium salt of battery has a high discharge voltage and discharge energy, which is greater than the output current, made for 86.89% of the total power of the electric power made by the discharge voltage of 1.4 volts. While adding 0.4 g of sodium silicate barium salt of the battery having a relatively flat discharge platform and a high discharge capacity, which is larger than the discharge voltage of 1.2 volts, the output capacitor accounts for the total output capacity of 93.3%; adding potassium permanganate, barium salt battery compared with no additives barium salt battery discharge voltage of 1.4 volts, 91% of the total capacity of the discharge capacity, discharge energy to the total energy of 93.4%. The modified alkaline high barium ferrite batteries (Zn / BaFeO 4) suitable for high current discharge voltage and stable work occasions.
Study of Sport Devices Based on Nanomaterial
Authors: Jiang Yi Pai , Wang Yan Xiu
Published: June 2013

The nanomaterials have been widely used in stadiums, sports turf, athletics track, sports apparel, sports equipment and sports supplements, nanomaterial into the body may bring cell lung tissue, liver and kidney tissue, brain tissue negative impact, there are some biological safety hazard. Take full advantage of the positive effects on the development of Sports Engineering nanomaterials should be paid attention to and strengthen the study of biological nanomaterials.
Study on the Jingdezhen Ceramic Materials
Authors: Qi Hao , Li Juan , Zhang Qiao Mei
Published: June 2013

As an ancient creative medium in the traditional Chinese art, ceramic material has a long and glorious history, which is an important part of traditional Chinese cultural resources. Now re-examine the folk art, ceramic materials show understanding of the colorful ceramic material morphology expressive and unique charm of materials technology, the combination of art and technology, the unity of the folk art and ceramic materials. It has become an important issue. Millennium Jingdezhen, for example, this paper studies folk art show in the ceramic material.
Synthesis of Viscosity-Variable Diverting-Acid Main Agent and Diverting Performance Evaluation
Authors: Qu Guan Zheng , Qu Zhan Qing , Huang De Sheng
Published: June 2013

The viscoelastic surfactant diverting-acidification technology is a new intelligent matrix acidizing technology.Based on the theoretical analysis，viscosity-variable diverting-acid main agent is selected out.Both the rthogonal design and the grey relational analysis are used to determine synthesis conditions and influence of reaction factors.The production structure is verified by the infrared spectra.Then coreflooding experiments are designed to check the diversion effect,and it shows that the system satisfies the need of diverting-acidification in the carbonate formation.
Hot Deformation Behavior and Microstructure of U720Li Alloy
Authors: Wang Tao , Li Zhao , Fu Shu Hong , Zhang Yong , Zhao Yu Xin , Guo Ling
Published: June 2013

The hot deformation behavior of U720Li was investigated by isothermal compression tests at temperature ranging from 1060-1180°C and strain rate from 0.001s-1 to 20s-1. The flow stress-strain curves and microstructures were investigated and a constitutive equation was established. It is found that flow stress is sensitive to stain rate and deformation temperature greatly. The higher stain rate resultes in a larger fluctuation in flow stress. The hot deformation activation energy is determined to be 552.8kJ/mol. Grain size increases with increasing temperature and decreases firstly and then increases with increasing strain rate. U720Li alloy should be deformed below the solve temperature of γ primary phase with lower strain rate in order to obtain the even and fine grain size.
Defects in Germanium Nanocrystals Produced by Ion Implantation
Authors: Zhang Yu Juan , Shang Lei
Published: June 2013

Germanium nanocrystals (Ge-nc) were produced by the implantation of Ge+ into a SiO2 film deposited on (100) Si, followed by a high-temperature annealing. High-resolution transmission electron microscopy (HRTEM) has been used to investigate the defect structures inside the Ge-nc produced by different implantation doses (1×1016, 2×1016, 4×1016 and 8×1016 cm-2). It has been found that the planar defects such as nanotwins and stacking faults (SFs) are dominant in Ge-nc (60%) for the samples with implantation doses higher than 2×1016 cm-2, while for the sample with an implantation dose lower than 1×1016 cm-2, fewer planar defects are observed in the Ge-nc (20%). The percentages of nanotwins in the planar defects are 87%, 77%, 67% and 60% in four samples, respectively. The twinning structures include single twins, double twins and multiple twins. We also found that there are only SFs in some nanocrystals, and in others the SFs coexist with twins. These microstructural defects are expected to play an important role in the light emission from the Ge-nc.
Synthesis and Characterization of Ferrous Tungstate Nanoparticles
Authors: Cui Yu Qian , Guo Pei Zhi , Zhang Guo Liang , Li Hong Liang , Yu Jian Qiang , Li Yue , Zhao Xiu Song
Published: June 2013

Highly crystalline FeWO4 nanoparticles (NPs) were synthesized via the hydrothermal synthesis method while amorphous FeWO4 NPs were prepared by the room temperature precipitation method. It was found that a dissolution-recrystallization process appeared due to the Ostwald ripening when room temperature precipitates undergo the hydrothermal process. Photocatalytic performance toward the degradation of methylene blue showed that crystalline FeWO4 NPs displayed a higher activity than amorphous samples, mainly ascribing to the substantial elimination of defects after crystallization because the defects promoted the recombination of electron-hole pairs.
MnO2/Graphene Nanocomposite for Use in High Performance Lithium-Ion Batteries
Authors: Zhu Xiao Yi , Li Jian Jiang , She Xi Lin , Xia Lin Hua
Published: June 2013

A facile hydrothermal route has been developed to prepare MnO2/graphene nanocomposites and MnO2 nanoparticles are uniformly anchored on graphene nanosheets. The composite were studied as the anode material for lithium-ion batteries. The surface of graphene is modified by MnO2 nanoparticles which are 10-30 nm in size and homogeneously anchor on graphene sheets. The composite exhibits superior lithium battery performance with higher reversible capacity and better cycling performance. The reversible capacity is up to 781.5 mAh g-1 at a current of 100 mA g-1 and maintains 96% after 50 cycles. The enhanced lithium storage performance is due to the synergetic effect of graphene and MnO2.
Crystal Growth and Optical Spectroscopy of Ytterbium-Doped Lutetium Orthophosphate
Authors: Wang Chao , Teng Bing , Xia Lin Hua , Zhong De Gao , Li Yu Yi , Liu Mu , Li Yang , Feng Xiu Jie , Deng Xu Jun
Published: June 2013

The flux growrh method is employed to grow the Yb:LuPO4 crystal using lead pyrophosphate Pb2P2O7 as the high-timperature solvent. The infrared spectroscopy(IR) was tested to determine the purity of the obtained crystal. The absorption spectra of the 5% Yb-doped Yb:LuPO4 crystal was measured at room temperature. Three absorption peaks that located on 985nm, 976nm and 953nm were found, and the absorption cross sections on the absorption peaks were calculated respectively. The results shows that Yb:LuPO4 crystal has potential to be applied as laser material.
Study on Moisture Transfer Properties of Polyester-Cotton Fabric
Authors: Liu Hong Ru , He Feng
Published: June 2013

In this paper, moisture transfer properties were studied on different weave structure and different weft of polyester-cotton fabric. Under the same conditions, the moisture absorption rates and permeability rates were measured on the different weft of plain weave, satin weave, twill fabrics. The influence law of the fabric density and structure on moisture absorption and permeability of polyester-cotton fabric were concluded. The results showed that under the same temperature and humidity conditions, the moisture absorption rates and permeability rates of the fabrics were both increased with the weft decreased. Moisture absorption rates and permeability rates of the plain weave fabrics were minimum, which of the satin weave fabrics were maximum, of the twill fabrics were moderate.
Preparation and Characterization of Electrospun Poly(vinyl Alcohol)/Silk Fibroin Nanofibers as a Potential Drug Delivery System
Authors: Zhang Dou Dou , Dai Li Xing
Published: June 2013

A series of poly(vinyl alcohol)/silk fibroin nanofibers loaded with 10 wt.% vanillin were successfully prepared from aqueous solutions via electrospinning. The morphology, weight loss and swelling ability of the nanofibers were characterized. The controlled release characteristics of vanillin in the nanofiber mats were evaluated by in vitro release test. Vanillin-loaded nanofibers had smooth surfaces like drug-free nanofibers, and showed thinner diameter than the latter. The release rate of vanillin in the nanofiber mats decreased with the increment of silk fibroin content, so by regulating the content the drug release could be controlled. Moreover, after treated with ethanol the nanofiber mats showed better stability against disintegration in water and sustained release rate of vanillin than untreated mats.
The Mechanical Property of Milk Protein Fiber Pure Yarn and Blended Yarn
Authors: Xu Gang , Yu Jin Ze
Published: June 2013

The milk protein fiber is one of the green fibers. It is blended with cotton. The strength of the blended yarn is tested. The relation between the strength and the twist factor and the blended ratio is analyzed. The optimum blended ratio and the critical twist factor is determined.
Study on Properties of Blended Fabrics Containing Phenolic Fiber
Authors: Liu Zheng Qin , Liu Wei Guo , Qiu Xiu Li , Zhang Yu Qing , Kong Fan Dong
Published: June 2013

Phenolic fiber is a new fiber and has excellent flame retardant properties. In order to investigate the textile possibility of phenolic fiber and to develop protective clothing and decorative fabrics containing phenolic fiber, the mechanical properties of phenolic fiber were studied firstly, then the polyester fiber was chosen to blend with different portion of phenolic fiber to enhance the strength of the blended yarn and finally the fabrics were knitted with different blended yarns. The strength and wear resistance of different blending ratio of phenolic/polyester blended yarn, and the bursting strength, abrasion resistance and flame retardant properties of the blended fabrics were analyzed and compared. The experimental results shows that the breaking tenacity and elongation at break are low, only 1.3 cN/dtex and 9.4%, respectively, which is not suitable for 100% phenolic fiber to be processed in yarn. The strength and wear resistance of the phenolic/polyester blend yarns and their knitted fabrics increase while the contents of polyester are increased. The flame retardant of phenolic/polyester blend fabrics is improved greatly due to phenolic fiber. Therefore, it is necessary for phenolic fiber to modify its strength and extension in order to be able to get the 100% phenolic yarn and products and in order to give full play to the excellent characteristics of the phenolic fiber.
A Differential Evolution Based Optimization Algorithm for Production Planning Model in Defense Industry
Authors: Zhou Yu , Jiang Jiang
Published: June 2013

The production planning problem in defense industry has the non-regular nonlinearity of the objective function and the NP-hard nature of the solution space. A nonlinear integer programming model was proposed for this problem. A differential evolution based optimization algorithm was developed to solve the proposed model. A case study validated the effectiveness of the developed algorithm, and proved that it is superior to the standard genetic algorithm on the global searching capability. The algorithm can support the weapons production planning, and also can be applied to other industries.
Analysis and Optimization of Plastic Parts Moldflow Based on Mold Flow
Authors: Yang Jun Kai
Published: June 2013

Mold flow software is used in the moldflow analysis of plastic parts, which can imitate the filling and cooling process of plastic parts in order to forecast the probable defect in product designing,so that the performance and quality of the plastic parts are confirmed.Different projects are compared to produce an optimal mould construction. Which saves the cost of production and improves the product quality and production efficiency.
Multi-Objective Optimization Design of Multi-Layer Rectangle Micro-Channel Heat Sink for Single-Phase Flow and Heat Transfer
Authors: Wang Li Feng , Shao Bao Dong , Cheng He Ming
Published: June 2013

The purpose of this paper is to optimize the structural sizes of multi-layer rectangle micro-channel heat sink, which has been widely used to cool electronic chip for its high heat transfer coefficient and compact structure. Taking the thermal resistance and the pressure drop as goal functions, a binary-objective optimization model was proposed for the multi-layer rectangle micro-channel heat sink based on Sequential Quadratic Programming (SQP) method. The number of optimized micro-channel in width n1 and that in height n2 are 21 and 7, the width of optimized micro-channel Wc and fin Wf are 340 and 130μm, the height of optimized micro-channel Hc is 415μm, and the corresponding total thermal resistance of the whole micro-channel heat sink is 1.3354 °C/W. The corresponding pressure drop is about 1.3377 Pa. When the velocity of liquid is larger than 0.3 m/s, the effect of change of velocity of liquid on the thermal resistance and pressure drop can be neglected.
Study on the Coal Mine Ventilation Air Methane Utilization Technologies Based on Flow-Reversal Oxidation Principle
Authors: Zou Wei Feng , Dai Lin Chao , Yang Hui Ming , Wang Bo
Published: June 2013

There is a huge amount of coal mine ventilation air methane emitted into the atmosphere directly each year in china, not only causes a lot of energy was wasted, but also do severe harm to the protection of the environment. The Utilization Technologies of coal mine ventilation air methane (VAM) are receiving more and more attention from people, Aiming at the domestic and international development status of VAM utilization, Thermal flow reversal reactor (TFRR) and catalytic flow reversal reactor (CFRR) are introduced, as two kind of flow-reversal oxidation technology which are the most popular and used widely. The economic and applicability about service life, total cost, space and performance of device are comparative analyzed, and illustrate the trends about the technology of flow-reversal oxidation of VAM from two aspects: to solve the problem of running stability well and improve its work efficiency reasonably. Finally, this paper outlines the future prospect for the development of this technology.
Kinematic Analysis of Lunar Exploration Manipulator
Authors: Chen Ming , Song Xiao Dong , Xiong Fei
Published: June 2013

The lunar exploration manipulator is an important part of lunar rover, which is also an important tool for the exploration of the moon. This paper simplifies the lunar exploration manipulator into two arms manipulator, which has three joint activities. Then analyze the motion of the manipulator to get the motion equation by the method of D-H, and also analyze the motion equations with the lunar rover base has a declination. In order to verify the correctness of the motion equations, the paper used the ADAMS software to simulate the motion of the manipulator.
Optimal Control and Strategy of Operating Mechanism for Pumping Unit Intermittent Pumping
Authors: Wang Xiao Liang , Yao Lu , Lian Xiao Yuan
Published: June 2013

In this work a new perspective of pumping unit intermittent pumping intelligent control in strippers is presented. The strategy consists in associating economic situations and dynamometer cards analysis in a cascaded control. In the proposal, the widely applied control strategies based on dynamometer cards and downhole pressure modeling and the overall economic efficiency, since the development of pumping unit operation mechanism plays a vital role to ensure energy saving in low-volume wells. The simulation results are analyzed in order to evaluate the operational conditions propitiated by intermittent pumping control in actual operation.
The Design of Fish Tank Thermostat Controller Based on TC89C52
Authors: Zhang Jian Jun
Published: June 2013

In this paper, we study the thermostat controller of the fish tank controlled by STC89C52. We use DS18B20 to measure the temperature. We control the relay to control the heating wire to whether heat or not. We can control the temperature at the setting value and display the value in LED.
Automatic PID Temperature Control of Thermoelectric Cooler Based on MSP430
Authors: Zhang Jian Jun
Published: June 2013

In this paper, we study the temperature control system of thermoelectric cooler controlled by MSP430F149 microcomputer. The system achieves automatic temperature control by using PID algorithm and voltage-controlled steady flow circuit. Using the keyboard and LCD, we can set the temperature, display the working status and draw real-time temperature curve.
Research on the Key Technologies of Low-Altitude Airspace Surveillance and Navigation System
Authors: Zhang You Hui
Published: June 2013

With the low-altitude airspace opening, the role of surveillance technology in ATC system has increasing prominent. This article used application of image extraction technology, algorithm processing, data fusion and transmission to improve the reliability of surveillance and set up a new structure of network. Finally, we used computers to achieve a new type of low-altitude surveillance system.
Design and Production of AT89S52 Microcontroller Tachometer
Authors: Yang Jun Kai
Published: June 2013

t proposes a tachometer program that consists of AT89S52 microcontroller and Hall sensor. The tachometer is based on acquisition of pulse signal issued by Hall sensor and microcontroller count. Then, after the data calculation, analysis, and treatment by internal program, real-time speed can be displayed through LED. The tachometer has advantages, such as simple hardware structure, high measurement speed, high precision, and simple operation.
Development and Application of the Health Law Enforcement Information System Based on Information Technology
Authors: Na Na , Liu Yong Lin , Ma Hong
Published: June 2013

Objective: This study aims to explore and establish a set of information system for health law enforcement and management using information engineering technology, and apply the system into both administration and law enforcement managements in health inspection agencies in Qingdao. Methods: Using information engineering technology to establish a set of information platforms for health law enforcement and administration management, then combine the data resources from all the national, provincial and municipal information platforms and develop a set of data analysis and Early warning mechanisms. Results: The municipal information platform was established and put into use successfully in Qingdao health inspection bureau. Conclusion: The application of the information system improved work efficiency greatly, reduce administrative cost, and helps the authorities to comprehensive grasp of the health law enforcement situation, scientifically assess, early warn, timely and effectively intervene and correct the health law enforcement works in the health inspection agencies.
Development Research on Cloud Application Program Based on GFS
Authors: Jiang Wu Xue , Li Qi , Fu Yuan Yuan
Published: June 2013

The thesis expounded the connotation of cloud platform, and made a comparison between several commercial computing development platforms, for the development of cloud application program with high-efficiency and high-quality. It proposed the general process of developing a kind of cloud application software, and developed a message board cloud application program used in teaching by basing on GFS, GAE platform, as well as realizing data design and management by adopting JDO technology. Practice showed that this research possessed certain theoretical significance and practical application value.
Development of MEMS VOA with only One Shutter for Dual Signals Simultaneous Operation
Authors: Chen Qing Hua , Li Yan Mei , Chen Ying Jun , Wu Wen Gang
Published: June 2013

A MEMS variable optical attenuator (VOA) with only one shutter for dual signals simultaneous operation is designed for advanced tuning functions. Theoretical electro-mechanism model has also been developed to provide optimization for the VOA design. In experiment, the fabricated VOA device has demonstrated a over 40-dB attenuation range with respect to the driving voltage of one shutter, and it has also realized low polarization-dependent performance. The superior specifications make this device very promising for optical network systems and laboratory equipment.
A Novel Image Contrast Restoration Algorithm for Fog
Authors: Lv Hui Xian , Zhao Zhi Gang , Xu Yan Feng
Published: June 2013

Images captured in fog suffer from low contrast, restoration of fog- degraded images are needed. In this paper, a novel algorithm of image restoration based on wavelet semi-soft threshold is presented. The results show detail restoration and de-noising are improved effectively comparing with Histogram equalization and homomorphic filtering method. It can be concluded that the new algorithm enhanced the contrast of fog-degraded image well.
Bayesian Estimation of Gold Index's Change Point of Time Series Model
Authors: Xiang Ying
Published: June 2013

The thesis mainly estimates the change point of time series model through Bayesian method. First, through establishing the time series model, adopting conjugate prior distribution, linear regression and prior information, the parameter values related to distribution can be got. Then posterior distribution and change point can be got through computation. To reduce iterative error, Peak Algorithm is used to check the posterior distribution. Finally, the gold indexs change point of time sequence model can be got through this method.
Simulation and Evaluation of DSSAT Model under Long-Term Continuous Maize Production for Agricultural Intelligent Decision Support
Authors: Liu Hai Long , Zhu Ye Ping , Yang Jing Yi , He Ping , Jin Ji Yun
Published: June 2013

DSSAT (Decision Support System for Agrotechnology Transfer) -CERES-Maize was employed to characterize maize yield and nitrogen dynamics in a 50-year maize production study at Woodslee, Ontario, Canada. The treatments selected for evaluation included continuous maize/corn with fertilization (CC-F) and continuous maize/corn without fertilization (CC-NF) treatments. The results showed that the DSSAT model could simulate yield of CC-F more precisely than that of CC-NF. The simulated cumulative nitrate loss from CC-F treatment from 1998 to 2000 was consistent with the actual measured value. For CC-NF, The DSSAT model overestimated the cumulative nitrate loss.
Sampling Theorems of Wavelet Subspaces with M Band in Higher Dimensions
Authors: Li Jin Zhou , Zhang Xin Cheng
Published: June 2013

Sampling theorem has a key role in signal processing and image processing. In this paper, the scaling functions with cardinal property are discussed in the dimensions and their symmetry property is classified. Therefore, sampling theorems of wavelet subspaces are obtained. Then, the cardinal orthogonal scaling function with cardinal property is characterized in the dimensions and an equation between the highpass filter coefficients and wavelet samples are got. The existing results are generalized to the case of M band.
Using Excel to Evaluate Shear Strength Parameters of Soil
Authors: Fan Meng Hua
Published: June 2013

It is difficult to determine the Mohr-Coulomb failure envelope visually, and it is strongly influenced by abnormal test data evaluating the shear strength parameters of soil via trend line and unable to adjust the scope of permissible error. So it is recommended to evaluate shear strength parameters of soil using Solver of Excel for direct shear tests and triaxial tests and you can control the allowable deviation. The mathematics model of nonlinear programming was established to evaluate shear strength parameters of soil from the results of direct shear test and triaxial shear test. The related Excel worksheet was created and the optimum results of the objective function were obtained by setting the Solver parameters dialog box accurately. The method is simple, inexpensive and rapid.
Epitaxial Graphene Growth on 6H-SiC (0001) Substrate by Confinement Controlled Sublimation of Silicon Carbide
Authors: Lei Tian Min , Deng Peng Fei , Zhang Yu Ming , Guo Hui
Published: June 2013

Large area epitaxial graphene (EG) layers are synthesized on 6H-SiC (0001) by annealing at 1500 °C for 5 min in a closed graphite chamber at low vacuum of 10-3 mbar and its 2D band in Raman spectra can be satisfactorily fitted by a single Lorentzian. From Raman spectroscopy, measurements indicate that too high growth temperature is to the disadvantage of the formation of graphene. The results of atomic force microscope (AFM) and field-emission scanning electronic microscope (FE-SEM) reveal the surface morphology of graphene is related with its growth temperature.
Forecasting the HS300 Stock Index with Radial Basis Function Neural Network Using Two-Stage Particle Swarm Optimization
Authors: Zhang Xiao Bo
Published: June 2013

This paper introduces a hybrid radial basis function neural network (RBFNN) using a two-stage particle swarm optimization. In stage one, we initially demonstrate how the PSO learning method simultaneously determines the optimal number of hidden neurons, centres and widths of the radial basis function. Afterwards we apply the least mean squares (LMS) method to calculate the weight between the hidden layer and output layer in stage two. Then we propose a novel fitness function and make forecast simulation of HS 300 stock index. It proves to improve the performance of RBFNN.
Research of State-Base Object-Oriented Software Testing
Authors: Chen Jing
Published: June 2013

This paper has explored the characteristic of objected-oriented programming languages and its impact on software testing. Has summarized the main contents of object-oriented software testing, hierarchical testing and approaches for designing the test case. Has discussing the current situation and the future development of object-oriented software testing technology.
ScanSAR Mode Sea Ice Image Segmentation
Authors: Lang Wen Hui , Chang Can Can , Yang Xue Zhi , Jie Zhang , Meng Jun Min
Published: June 2013

Non-stationary nature of the SAR image is a major obstacle to the automatic interpretation of SAR sea ice image. Incidence angle effect is one of the main factors leading to instability in the sea ice image features. Wide observation with automatic interpretation of SAR sea ice image,incidence angle effect on sea ice region, considering the speckle noise, the incidence angle effect and uncertainties, to the region through the pixel and then to large-scale regional a way, the merger of the incident angle effect correction on the scale of the regional clustering, class and regional operating combination of up to improve the segmentation algorithm for non-stationary adaptability.
Performance Evaluation of Private College Teachers Based on Analytic Hierarchy Process (AHP)
Authors: Lan Lan
Published: June 2013

In this paper a relatively functional Analytic Hierarchy Process(AHP) model is constructed according to the job traits of private college teachers. Through personal interview, professional counseling, questionnaire survey and field observation, a set of performance evaluation indicators is composed and computed. AHP can give the performance of private college teachers a real-time evaluation and effective sort, then a scientific and specific method and basis to value private college teachers is provided.
Empirical Research on Roof Reclamation by Land-Lost Farmers in Peri-Urban Areas of China
Authors: Wang Cheng Xin , Liu Kai , Li Qiang
Published: June 2013

The problem of land-lost farmers caused by China's rapid urbanization has become increasingly prominent; in particular, the elderly land-lost farmers are having a hard time. Roof reclamation is a sound solution to this problem. Based on typical research, the feasibility of roof reclamation for peri-urban farmers is analyzed, and its high economic, social and ecological benefits are summarized, and pointed out that roof reclamation was an experience and a practice which was worth promoting.
The Employment-Driven Effect on the Establishment of China’s Strategic Petroleum Reserve - Preliminary Measurement Based on Chinese Input-Output Tables
Authors: Zhao Ling Di , Yang Ming Ye , Zhang Lei
Published: June 2013

The establishment of China’s Strategic Petroleum Reserve (SPR) promoted the development of relevant industries, and these industries could create more employment opportunities. Therefore, based on the establishment of SPR, this study applied Input-Output Tables to estimating its employment contribution to 23 related industries in national economy, used the employment–driven model to measure the driven-effect, and then proposed some policy suggestions.
The Stability Analysis and Planning for Multivariable Linear Time-Delay Systems and its Application in Supervision Oilfield
Authors: Wang Ren , Qi Xue Kun , Xing Long
Published: June 2013

Based on Lyapunovs theory of stability, analyze on a control process of oil-water separation with time-delay, coupling and uncertainty in the unite station. a equation of sufficient condition for multi-variable Linear Delayed Systems with delayed independent stabilization is derived and another forms are also given. Based on this, several simple criterions for judging independent stabilization from linear delayed system are presented. We also discuss the exponential stability for delayed system and also provide the sufficient condition of exponential stability with any appointed convergent rate and its corresponding deductions. Using these conditions, we can choose a set of suitable parameters to reduce the conservation. By calculating and being compared with methods of the literature, the results show that our methods have less conservation.
Effect of China’s Commercial Banks’ Diversified Revenue on Performance
Authors: Deng Yong Qin , Li Zhao Yang , Yi Yuan
Published: June 2013

The reasons of China's commercial banks developing diversified revenue are analyzed from the theories of financial innovation, diversity theory and economies of scope. The overall and packet inspection has been done to disclose the relationship between diversified revenue and Chinas bank performance by the financial data of 14 commercial banks during the period of 1999 to 2009. The results show that there is a stable positive correlation between non-interest income and banks' performance for all of the commercial banks and state-owned banks, while the proportion of non-interest income has a positive impact on banks' performance in the joint-stock banks, yet diversified income structure shows a negative correlation with performance. Meanwhile it reveals that the proportion of non-interest income and diversified revenue have a lagged effect on banks' performance. Finally some suggestions are given to optimize Chinas commercial banks revenue structure.
Analysis on Small and Medium-Sized Enterprise Passive Financing Cause and Capital Optimization Path
Authors: Qin Qun Fa
Published: June 2013

small and medium-sized enterprises have been the main part of creating social wealth in China, the main force of employment and also an indispensable part of promoting the harmonious development of economy and society. Shortage of funds and financing difficulty have been in most of the SME, however, we all know that, funds plays an essential role in subsistence and further development of the SME. In this paper, we analyzed reasons for SME financing and the passive path of optimizing capital.
Effects of Water-Soluble Dietary Fiber to Wheat Dough Rheological Properties
Authors: Xu Pei Long , Zhang Cheng , Lin Qing , Guo Cheng Hao , Wang Zhi Xu , Zhang Yi
Published: June 2013

Objective: In this study, wheat dough rheological property changes caused by water-soluble dietary fiber were investigated. Methods: Capillary Rheometer and Extensional Rheometer were used to detect dough samples with water-soluble dietary fiber in different concentrations. Results: Water-soluble dietary fiber affects dough rheological properties both in strength and resistance. Conclusion: When water-soluble dietary fiber concentration increased, dough became softer but stability and stir tolerance decreased.
Rg3 Monomer as a Chemotherapy Drugs Sensitizer to Acute Leukemia Cells
Authors: Hou Yi Ju , Hao Feng , Liu Xiao Dong , Yuan Zhong Hai , Li Yan
Published: June 2013

Vincristine (VCR) has been an important first-line anti-cancer drugs, since its inception in 1962.And it is the common treatment drugs of acute leukemia. The mechanism of the action of VCR is the induction of apoptosis in leukemic cells. However, VCR neurotoxicity and its adverse reactions such as bone marrow suppression, neutropenia, anemia and limit its clinical use. The effect of chemotherapy has been severly affected. Rg3 monomer is a natural active ingredient extracted from ginseng,and it can induce apoptosis of tumor cells with very low toxicity to normal cells . In recent years , a series of studies were carried out aimed at reducing the adverse reactions of the VCR , enhancing drug sensitivity[1-3].In this study, the combined effects of VCR and Rg3 monomer in K562 cells cultured in vitro were investigated to provide Rg3 monomer of Ginseng is a sensitizer of chemotherapy drugs as VCR to acute leukemia Cells. We conclude that Rg3 monomer can improve the sensitivity of leukemia cells to VCR according to our experimental results.
Antioxidative Principals of Extracts from the Fruit of Viburnum awabuki
Authors: Huang Hai Lan , Qiu Shu Mei , Wang Hai Yuan , Wang Zong Hua
Published: June 2013

The fruit of Viburnum awabuki is an elliptical berry.The crude extract and its four fractions derived from the peel of the fruit Viburnum awabuki were evaluated for the DPPH radical scavenging ability(DRSA), hydroxyl radical scavenging capacity(HRSA) and reducing power(RP), and the content of some antioxidative compounds and the relationships between these antioxidative compounds and antioxidant activities of the crude extract (CE) and its four fractions were investigated. The results showed that the ethyl acetate-soluble fraction (EAF) was the richest fraction in total flavonoids, ascorbic acid content (45.34 and 8.92 mg/g, respectively). The ethyl acetate-soluble fraction showed good DPPH radical-scavenging activity and reducing power, while the crude extract (CE) possessed better hydroxyl radical-scavenging than other fractions. There were statistically significant correlations between some antioxidants and antioxidant activities.
Study on Preparation of Ni/C Composite Powder by Electroless Plating Compound Complex Agent
Authors: Jiang Yan , Xiao Rui Min , Li Zi Jing , Sun Li Da , Huang Du Shu
Published: June 2013

t is that Ni/C composite powder are prepared by electroless plating with hydrazine hydrate as a reducing agent and compound complex agent.To investigate the effect of main salts, reductant dosage, graphite dose and compound complex agent ratio on the conductivity of composite powder.It is can be obtained under optimum conditions with good electrical properties , the rough surface is completely coated Ni / C composite powder.
The Research on the Rheological Properties of SSBR-Based Composites Filled with CB/Silica
Authors: Ding Nai Xiu , Xu Shuai Feng , Li Lei
Published: June 2013

The dynamic viscoelastic properties of solution polymerized styrene-butadiene (SSBR) filled with different proportion of carbon black and silica were studied by using the rubber processing analyzer (RPA2000) and DMA under different scanning conditions. The results indicated that in the first strain sweeping process, the storage modulus (G) reduced gradually with the increase of ratio of carbon black, and the function of coupling agent (Si69) decreased. During the secondary strain sweeping process, it was found that with the increase of sweeping time interval, the stress softening phenomenon abates. On the other hand, through three strain sweeping, it was considered that the effect of Payne was not caused only by the factor of filler-net.
Dyeing and Finishing of the Wool Regeneration Protein and Polyacrylonitrile Copolymerization Fiber
Authors: Wu Ruo Zi
Published: June 2013

Partial dyeing and finishing properties of the copolymerization fiber of wool regeneration protein and polyacrylonitrile are analyzed in this article. The optimum bleaching condition is 30%H2O230g/L, Na2SiO36%(o.w.f) for 60min at 60°C.This new fiber can be dyed by acid dye and cationic dye in one-bath one-step dyeing process. Interaction between anionic surfactant NNO and cationic dye has been investigated using conductometric examinations. The results are that the mass ratio of cationic dye and NNO is 1:7-9, the ratio of anionic dye and cationic dye is 2:8 which is the same as the constituents of fiber. The method of making this special dyestuff is drying the cationic dye (liquor) and NNO (liquor) compound, and then mixed with acid dye, thus trichromatic dyestuffs have been made on the whole through experiment.