bluuebunny/crossref_metadata_2025 huggingface dataset:
Biodiesel Production from Waste Cooking Oil Using KCL/CaO as Catalyst
Authors: Yu Si Yi , Han Xin You , Mi Jun
Published: October 2014

A KCl-doped CaO solid alkali catalyst was obtained in a wet impregnation method and treated under microwave irradiation to obtain enhanced stability and activity. Then the catalyst was successfully used in the transesterification of refined waste cooking oil with methanol to produce biodiesel. A uniform design experimentation U7 (74) and regression analysis by DPS software were used to obtain the optimum conditions of transesterification at the lowest cost. Temperature 338K, catalyst amount 4.5% (wt./wt.oil) and methanol/oil molar ratio 9:1, after 90 min reaction, the fatty acid methyl esters yield reached 91.28% and the purity was over 99%, which was up to the national standard for B-100 biodiesel.
Classification Prediction Method Used in Coal Crushing
Authors: Zhang Li Song , Yan Xiang Zhen , Yang Xiu Juan
Published: October 2014

Coal principal stresses with reservoir plane is analyzed, consequently coal seam crushed classification method is presented based on Hoek-Brown criterion. According to the coefficient of coal crushing, coal seam crushed coefficient size, four grades of A,B,C,D are divided for coal crushed degree along wellbore direction, and coal crushed classification standard is determined. Using the classification method and standard, the distribution regularity of coal crushing is studied for ZP-05 Well in QinShui basin. The research results show that coal crushing of ZP-05 is considered as grade B. The prediction results agree well with the measured values.
Effects of Build Orientations on Tensile Properties of PLA Material Processed by FDM
Authors: Afrose Mst Faujiya , Masood S.H. , Nikzad Mostafa , Iovenitti Pio
Published: October 2014

Fused Deposition Modelling (FDM) of thermoplastic materials is generally a well-known technology among all additive manufacturing (AM) technologies and therefore, it is essential to investigate the mechanical properties of such FDM processed materials. Several open-source and low cost AM machines, known as 3D Printers, have recently been developed using thermoplastic extrusion process based on the original FDM technology. Many of these 3D Printers use Polylactic Acid (PLA) plastic for building parts. The main objective of this paper is to investigate the tensile properties of the PLA thermoplastic material processed by the Cube-2 3D Printer. In this study, the dog-bone sized PLA specimens are printed in different build orientations and a Zwick Z010 tensile testing machine is used to determine the tensile properties of PLA in different build orientation.
Implementation and Application of QoS in Power Ethernet Switch
Authors: Feng Shan Qiang , Hu Chun Chao , Ma Kai , Zhang Xiao Yue , Lan Wen Qing , Chen Hu
Published: October 2014

Smart grid based on Ethernet technology is the development direction of power transmission network, power Ethernet carried different data communication service, which have different needs for network transmission time delay and bandwidth guarantee, which is reflected in the quality of service of network QoS (Quality of Service) requirements, in power Ethernet, QoS which can provided differentiated services (Diff-Serv) is essential. This paper outlines QoS implementation, QoS feature and related technologies in the power Ethernet switch, and analyses the flow characteristics of digital substation network, and proposes classification and scheduling scheme of service traffic based on network nodes, and elaborates an important effect that QoS has in ensuring substation communication network transmission of high quality service.
Optimization Design of High Frequency Transformer for Multiple Outputs Switching Power Supply
Authors: Liu Yan , Lu Ming Li , Qu Chao
Published: October 2014

With TOP243Y as control chip of multiplexed output flyback switch power supply, has the advantages of small volume, high integration and strong function, and the high-frequency transformer design and calculation large effect on the overall performance of multiple output the switch power supply. Based on the design computation to optimize the parameters of the transformer can be achieved to improve voltage accuracy, reducing the ripple effect. Seen from the experimental data and waveform of the switching power supply regulator, electromagnetic compatibility are good, meet the design requirements.
Electrochemical Behavior of Glucose Oxidase on Gold Electrode Modified by Poly(3, 4-Ethylenedioxy-Thiophene)
Authors: Zhou Xin Fei , Song Yan Hui , He Kun Yun , Zheng Hai Tao , Suye Shin Ichiro
Published: October 2014

Conducting poly (3, 4-ethylenedioxy-thiophene) (PEDOT) thin film was prepared onto gold electrode by electrodepositing from aqueous electrolyte. Glucose oxidase (Gox) was further immobilized on the PEDOT/Au by physical adsorption. The morphology the modified electrode was investigated by FE-SEM. In phosphate buffer medium (0.1mol·L-1 pH 5.5), cyclic voltmetric results indicated that GOx can be immobilized on the PEDOT film, and the biological activation of GOx was retained. A direct electron transfer was found between immobilized GOx and electrode, which suggested that the PEDOT film could not only supply a platform for enzyme immobilization but also offer a effectively electrical contact with the active sites of enzyme.
Research on Technology Roadmaps of the Wind Power Industry Based on Bibliometrics and AHP Method - A Case Study of Wind Blade
Authors: Li Chun Fa , Sun Ting Ting
Published: October 2014

By taking wind turbine blade as an example, this article built the technology roadmaps model to research the critical techniques in wind power industry. In particular, the collection and visualized analysis were implemented with the use of bibliometrics and relative software; we realized the technology assessment of critical techniques by structuring AHP model; finally, the technology roadmaps were made based on evaluation result and the technology forecasting of wind blades was realized combining with the industry conditions.Please make t
Research Progress in Calculation Methods for Single-Well Dynamic Reserves of Gas Reservoirs
Authors: Shi Hai Dong
Published: October 2014

Dynamic reserves are the important basis for determining the reasonable deliverability of gas wells and well spacing density and also the foundation for the overall development plan of a gas field. Therefore, the evaluation of dynamic reserves of gas wells is crucially important to developing gas fields with high efficiency, optimizing well pattern and shortening development period. For this reason, this paper arranges and analyzes systematically a series of calculation methods for dynamic reserves of single gas well, which have arisen in recent years, and identifies the calculation methods for different types of gas reservoirs.
Review of Power System Harmonic Source Location Method Based on State Assessment
Authors: Cheng Le Feng , Yu Tao , Cai De Hua
Published: October 2014

Utilizing the harmonic state assessment technology to locate harmonic source is put forward as people attaching importance to harmonic problems. This method has the overall observability, which is suitable for application in the actual system. In this paper, firstly, the conception and mathematical descriptions of harmonic state assessment technology is introduced, then several current harmonic state assessment methods to locate harmonic source are summarized and reviewed. Lastly, this paper proposes several problems to be solved for using harmonic state assessment to locate harmonic source in the future.
Electrochemical Degradation of Benzene in Water Using Platinum Supported on Carbon Black Materials
Authors: Chen Chiu Wen , Li Je Wei , Hung Chang Mao , Lou Jiann Yuh , Dong Cheng Di
Published: October 2014

This study investigated the feasibility of the electrochemical degradation of benzene (C6H6) in a NaCl electrolyte solution between 0.05 and 0.5 M under the temperature of 298 K and reaction concentration between 1.28×10-5 and 1.28×10-3 M with an applied potential of 3 V was conducted in this study to investigate the destruction of the C6H6 in the batch reactors using a Pt/XC-72 composite as a catalyst. Experimental results indicated that the optimal conditions in the reaction were developed as a NaCl solution with 0.1 M at pH of 1.0 under C6H6 concentration of 6.41×10-4 M. The results reveal that electrochemical degradation of C6H6 in acidic medium is highly effective, while a maximum about 41% reduction at 120 min was achieved with Pt/XC-72 composite during the electrochemical degradation. In comparsion, the removal efficiency reached only 29% with the Pt electrode, showing the suitability of the Pt/XC-72 composites for electro-oxidation of C6H6. As a result, XC-72 carbon black materials played an important role in the decomposition of C6H6. Furthermore, the Pt/XC-72 composite used in this research has been developed as a potential catalyst for the application of C6H6 electro-oxidation.
Experimental Research of Stone Coal Mixed with Biomass Pyrolysis
Authors: Zhao Jing , Liu Guang Qiang , Liu Kun , Zhang Shuo , Xie Guo Wei
Published: October 2014

Stone coal and two kinds of biomass were respectively mixed and studied during pyrolysis by using thermogravimetric analyzer. The results showed that the main pyrolysis peak temperature of stone coal is the lowest under the mixing ratio of 3:7 during the pyrolysis process. Because of the high content of alkali, corn stalk has better promotion for the coal pyrolysis compared to sawdust.
Design and Optimization of Dense Phase Desulfurization Tower
Authors: Tian Hai Jun , Song Cun Yi , Tong Zhen Song
Published: October 2014

Dense flow absorber of desulfurization is a new type of semi dry flue gas desulfurization technology, desulfurization of flue gas is mainly in the dense phase absorption tower. By using the turbulence model in Fluent.14 software, three-dimensional numerical simulation of dense phase in different flue gas entrance tower height of internal flow field. Selection of k- ε model as the calculation model, using Simple algorithm. Selected from the flue gas 1m, 2mand 3m, simulation the flow field distribution, combined with the experimental analysis.The results show that the flue gas entrance height from the top of the 1m, the flow field distribution is uniform, the minimum pressure drop.
The Analysis on the Example that the Comprehensive Application of Cuplok Scaffolding and Steel Tubular Scaffold with Couplers in Large Span Beam Structure Support
Authors: Meng Ling Si , Fang Guang Xiu , Xu Hao , Zheng Yan Shu
Published: October 2014

This paper, taking the application of Cuolok Scaffolding and steel tubular scaffold with couplers in large span beam structure support of the chamber building in Ningxin residential community in yanji, jilin province as an example, introducing thedesigning scheme,and measures to guarantee the technology quality . Meanwhile, doing the calculation analysis calculating method,Through the inspection about the sub-projects of scaffold, template, and concrete structure, the construction quality meets the requirements of specification acceptance standard in China, so this approach can be applied to similar project.
Interactions between TiAl and ZrO2 Face Coat during Centrifugal Investment Casting
Authors: Chen Yan Fei , Chen Yuong , Tu Jiang Ping , Zheng Shun Qi
Published: October 2014

γ-TiAl alloys are emerging as potential light-weight, high-temperature structural materials and possess wide capacities of engineering applications in aeronautics, space and automobile industries because of their low density, high specific strength and specific modulus, good oxidation-resistance and creep-resistance. Investment casting is introduced to complex TiAl net-shape or near net-shape components. In this research, ZrO2 (CaO stabilized) was chosen as the face coat materials for the investment casting of TiAl alloys. The present study mainly focuses on the fabrication of ceramic shell mould for TiAl investment casting. Optimisation of reducing the stress in cast-mould system was carried out. The processing technology of the invented ceramic shell moulds was successfully verified in the investment casting of prototype TiAl parts. The interfacial reaction between TiAl alloys and ZrO2 ceramic mould was analyzed using OM, SEM, EDS and XRD. The experimental results showed that, when the rotation speed is 200 rpm and 400 rpm, the thickness of reaction layer is about 5μm and 20μm, respectively.
The Mechanism of Monitoring and Incentive on Renewable Energy Building in Eco-City under the Background of New Urbanization
Authors: Xiong Dong Xu , Ge Cui Yu
Published: October 2014

Renewable energy architecture application is the selection of new urbanization road in China. The paper takes Nanjing Kirin technology ecological area as an example, through the establishment of mechanism of energy efficiency evaluation system on kenewable energy resources building application,puts forward to the countermeasure of energy efficiency evaluation system on kenewable energy resources building application, safeguards the implementation and popularization of the kenewable energy resources building.
The Analysis about External Compressible Flow around an Aircraft Wing
Authors: Long Wei , Ling Zai Shuai , Dang Zhen
Published: October 2014

The Steady flow simulation to selected the delta wing model for different angles of attack in the Maher number.The law of flow field changes with the angle of attack is gotten.Through the FLUENT simulation,The variation tendency of coefficient of lift and drag in the different angle of attack is gotten.Further reveals the change rule of Maher number, pressure, velocity and other parameters in the different angle of attack.With increasing angle of attack, Maher number distribution is sparse of the same position increases and the greater numerical.the distribution of velocity vector is sparse of the same position increases and the greater numerical.the pressure distribution is sparse of the same position increases and the greater numerical.
Anti-Lock Braking System is Working Principle and Troubleshooting
Authors: Zhang Xu Dong
Published: October 2014

This paper introduces the working principle of anti-lock braking control system and detailed classification method, points out that the car special anti-lock control system, and mainly illustrates the anti-lock control system structure and function, at the same time provides several common fault repair methods for reference.
Automotive Anti-Collision Radar Signal Processing System Design Based on DSP
Authors: Zhang Xin Yu
Published: October 2014

The principle of the frequency modulated continuous wave radar for measuring distance and velocity and signal processing method are described in this paper; To solve the signal processing problem for FMCW automotive anti-collision radar system ,the radar signal processing circuit is researched and designed, including the design of corresponding gain control amplifier circuit, power supply and filter circuit, external memory circuit ,power supply circuit ,signal interface circuit, and analyzed the results of the measurement for system. Experiments showed that the system achieved good accuracy design effect and higher measurement precision and has certain positive role to improve vehicle safety.
Control of Thermal-Oxidative Degradation of Natural Rubber STR 5L by Using Cysteine Encapsulated with Alginate/Chitosan Microcapsules
Authors: Kreua-Ongarjnukool Narumol , Tuampoemsab Surakit , Rattanasupa Pensiri
Published: October 2014

This research was to study the efficiency of cysteine (Cys) acted as a natural antioxidant, which was encapsulated in alginate/chitosan (AG/CS) microcapsules to control the thermal oxidative degradation of natural rubber STR 5L. The microcapsules were prepared by a combined method based on ionic gelation and electrospraying techniques. The preparation of AG/CS microcapsules were executed to find the appropriate parameters such as applying voltage and concentration of alginate and chitosan. The applied voltage achieved for controlling the particle size as well as narrow size distribution of microcapsule. The AG/CS/Cys microcapsules were found to be a spherical shape and the average size was approximately 120 μm. The percentage of cysteine encapsulated within AG/CS microcapsules was increased with the increasing of chitosan concentration and encapsulation efficiency of cysteine in the microcapsules is about 81%. Core-shell structure of the microcapsule was confirmed by confocal laser scanning microscopy. After that, the natural rubber STR 5L mixed with AG/CS/Cys microcapsules was evaluated the oxidative resistance by Wallace plasticity. Thermal aging test according to standard ASTM D1349 at 70°C of the STR 5L mixed with AG/CS/Cys microcapsules were carried out. Weight-average molecular weight (w) of the rubber sample before and after aging test was also investigated by gel permeation chromatography. Thewof rubber sample before and after aging test presented clearly results depending on the aging time. Concisely, the AG/CS/Cys microcapsules have a potential to control release Cys and can be used to control the deterioration of raw STR 5L. The model of this encapsulation is expected to be applied with other applications.
Design a PLC-Based Variable-Frequency Governing Pressure-Constant Water-Supply Control System
Authors: Yang Xin Hui
Published: October 2014

This paper provides a design for a PLC-based, variable-frequency governing, pressure-constant, automatic water-supply control system. This design is based on the current situations at the water supply plants found in small and medium cities in China. In this control system, the pressure signal across the pipe network is acquired by pressure sensors and then transmitted to PID modules in the PLC in order to control switching between pump motors. At the same time, the PLC is connected with a personal computer for industrial control purposes. On this computer, monitoring and control software has been installed in order to monitor and control the pressure-constant water-supply system on a real-time basis.
Performance of an Maleic Anhydride Based Polymers as Scale Inhibitor and Iron (III) Scaling in Industrial Cooling Water Systems
Authors: Wang Hu Chuan , Zhou Yu Ming , Sun Wei
Published: October 2014

The precipitation of Ca3(PO4)2 scale on pipe surfaces widely occurs in numerous industrial processes. For the control of Ca3(PO4)2 scales, a novel environmentally friendly type of scale inhibitor Maleic anhydride (MA) - allypolyethoxy carboxylate (APEM) was synthesized. Structures of APEG, APEM, and MA-APEM were identified by FT-IR. MA-APEM possess excellent Ca3(PO4)2 inhibition, approximately 96.7 % at threshold dosage of 6 mg/L, and it also have superior ability to iron (III) dispersion in solutions approximately 24.3 % in the presence of MA-APEM when the dosage exceeds 6 mg/L. Inhibitor of MA-APEM can be used safely in cooling water systems.
Optimization of Tension Control System for Cold Rolling Exit Section
Authors: Li Li , Yan Huan , Sheng Ru Long , Li Min , Wang Yue Ming
Published: October 2014

Through theoretical analysis of the working condition of the tension roller and stress, user can discuss the main reasons of tension roller slip, and put forward the preventive measures to eliminate tension roller slip by using Euler formula and the research on the tension roller slip phenomenon of cold rolling. This technology has significant practical meaning for improving both the quality and efficiency of product.
System of Annealing Furnace Temperature Control Based on Neural Network
Authors: Wang Xin , Pan He
Published: October 2014

In the thesis the adaptive ability of neural network strong and good nonlinear approximation ability, A controller is designed based on BP neural network by the adaptive ability of neural network strong and good nonlinear approximation ability in this paper, this method changed defect of the usual PID controller that parameters of annealing furnace condition are not easy set and the ability to adapt is poor. The new method is not only has good stability, but also has high control precision and strong adaptability.
The Design and Implementation of a Low Cost and High Precision Angle Measuring Device
Authors: Bi Xin Lei , Gao Guo Wei , Pan Hong Sheng , Chen Ming Ming
Published: October 2014

Based on SCA830 accelerometer designed a low cost high precision Angle measurement device. The device adopts the real-time mean shift filtering algorithms to reduce the interference of the external environment and noise, uses piecewise linearization method for Angle sensor calibration. The experimental results show that the designed angle detection device precision can reach 0.02 °, the system is stability, digital signal transmission is complete, and it can collect real-time carrier tilt Angle.
Typical PD Type of GIS, Transformer, Switchgear and other Substation Equipment
Authors: Zhang Wei Dong , Liu Qing , He Nan , Wang Jian Wen
Published: October 2014

Most high-voltage faults are caused by the insulation degradation of electrical equipment, while partial discharge is the main reason of insulation breakdown of electrical equipment. This paper introduces partial discharge types of GIS, transformer, switchgear and other substation equipment based on the study of partial discharge types and summarizes five types of partial discharge of substation equipment, namely: spike discharge, free particle discharge, insulation defects discharge, surface discharge and suspended click discharge.
Voltage Control and Optimization of Distribution Network with DGs Based on Droop Characteristics
Authors: Tian Yuan Yuan , Liao Qing Fen , Liu Di Chen
Published: October 2014

The limitations of both grid-connection control and var optimization for improving the voltage of the distribution network with DGs are pointed out in this paper. Thus, it is proposed that the integration of grid-connection control and var optimization for complementary advantages becomes necessary. A model of var optimization based on genetic algorithm is designed, and analysis of examples is carried out by use of MATLAB. Meanwhile, control models of grid-connected inverters based onP-fdroop control andP-δdroop control are designed, whose characteristics are compared by simulations done on MATLAB/Simulink. Results show the validity of the supposed var optimization technique and grid-connection control technique.
Offline Optimization of Parallel Hybrid Electric Vehicle Energy Management Strategy Based on the Dynamic Programming
Authors: Yang Shi Chun , Gu Yue , Li Ming
Published: October 2014

By using dynamic programming (DP) which is a kind of global optimization algorithm, an energy management control strategy for a parallel hybrid electric vehicle (PHEV) on different charging depleting range (CDR) had been studied. The results show that motor-dominant control strategy should be applied to the PHEV when CDR is less than 55km, and engine-dominant control strategy should be used when CDR is more than 55km. With optimal control strategies from DP, the best economic performance can be obtained as CDR is 55km
A Method of XML to RDB Mapping Based on XML Schema
Authors: Ying Jia
Published: October 2014

The article analyzed the shortage of P_schema, and brought forward an improved method P_schema++,.Nesting structure.multi_citing element, alternative element was picked up to format a new type, and then to a relation table. P_Schema++ provided a method for storage of Complex XML document in RDB.
Synthesis of 5-Formyl-2′-Deoxycytidine and its Monophosphate
Authors: Sun Jian , Gong Shan Shan , Sun Qi
Published: October 2014

An efficient method for the synthesis of 5-formyl-2′-deoxycytidine and its monophosphate has been developed.
Research on Risk Evaluation of Investment Decision Stage Base on Sensitivity Analysis for Building Engineering Projects
Authors: Jin Chang Hong
Published: October 2014

The Sensitivity Analysis is a risk valuation method to calculate the variety range of project economic effect evaluation index, and to judge the influence degree of project expectation target caused by indetermination factors. The paper discusses the risk evaluation of investment decision stage for building engineering projects based on Sensitivity Analysis, which would be beneficial to perfect the practice of the risk evaluation of investment decision stage for building engineering projects.
Research on the Risk Evaluation of Construction Stage Base on Analytical Hierarchy Process for Building Engineering Projects
Authors: Jin Chang Hong
Published: October 2014

The thinking way of Analytical Hierarchy Process (AHP) is to decompound a complicated risk problem according to layers, and to carry through judgment and calculation among the risk factors of the same layer to get the risk level of different schemes, and to provide decision basis for the choice of schemes. The paper discusses the risk evaluation of construction stage for building engineering projects based on Analytical Hierarchy Process (AHP), which would be beneficial to perfect the practice of the risk evaluation of construction stage for building engineering projects.
Stress and Fatigue Analysis of Elliptical Head with Multi-Opening in Thermal Environment
Authors: Su Hou De , Li Jin Bo , Li Hong Bo
Published: October 2014

The mechanical and thermal response of elliptical head with multi-opening subjected to thermal loads, were carried out using ANSYS software. By dispersing the structure finite elements, the mechanical and fatigue behavior were discussed by APDL language following JB4732, and the result about stress evaluation and fatigue analysis are given, from the result, we can conclude that high first plus second stress and stress concentration may be formed at the intersection between center nozzle and elliptic, as well as between eccentric nozzle and elliptic. The structural discontinuity degree and temperature fluctuation has a big influence on stress concentration, as the most common, opening nozzle of a pressure vessel, the checking of dynamic and static of the structure, especially fatigue-checking are necessary.
Simulation of Constant Pressure in Water Supply System with Frequency Converter Based on Matlab
Authors: Hu Wei Wei
Published: October 2014

Constant Pressure in Water Supply System with Frequency Converter is a complicated non-linear system, and it’s difficult and abstract to research only in mathematic way. In order to study the running mode of the system and improve the actual situation, based on the control theory analysis of the system, a model of Constant Pressure in Water Supply System with Schneider Electric ATV 61 Converter was developed using MATLAB/SIMULINK. The S-function model of Matlab was used in simulation of the non-linear part. A sample Water Supply System was simulated using the proposed model. The effectiveness of the model was demonstrated by the simulation result. The proposed model is useful in analysis and designing of Constant Pressure in Water Supply System.
Research on Detection of Transmission Line Porcelain Insulator Based on Infrared Technology
Authors: Tong Jie , Xiao Zhi Gen , Gao Qiang , Wang Yang
Published: October 2014

With the continuous development of infrared technology, infrared-based detection and diagnosis technology has become a new modern power equipment detection technology. Based on infrared technology, this paper proposed detection and diagnosis method of the transmission line porcelain insulators, including analysis on detection theory of IR imaging sensor, and infrared imaging map introduction. Through establishing porcelain insulator circuit calculation model, computing heating power of trouble insulators, this paper minutely analyzed the heating causes of trouble insulators. The paper provided a reference to the detection of transmission line porcelain insulators, which made it an important measure to ensure the safety and economic operation of electrical equipment.
The Design of Isolated RS485 Bus System Based on ATmega162
Authors: Huang Song Lin , Cui Jian Zhong
Published: October 2014

As a multipoint differential data transmission electrical specification, RS485 bus has become the industry one of the most widely used standard communication interface. This communication interface allows the simple multi-point two-way communication on a pair of twisted pair, with which the noise suppression capability, data transfer rate, cable length and the reliability is unmatched by other standards. But this way of differential signal transmission is highly susceptible to common-mode interference, EMI electromagnetic interference and strong signal interference. In this paper, optical isolation devices were adopted on RS485 bus, which can effectively solve the interference problem of signal transmission process.
Preparation and Characterization of Boron Carbon Nitride Films on High Speed Steel Surface
Authors: Bi Kai , Liu Jun , Dai Qi Xun
Published: October 2014

In this paper, we deposited BCN films on high speed steel (HSS) substrate by magnetron sputtering. The structure and composition of the films were analyzed by X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). The tribological properties of the films was studied by ball-on-disc tribological test. Results show that BCN films have a certain antifriction effect, which is influenced by RF target power and substrate bias.
Study on Damping Properties of Fe12O19Sr/NBR Composite
Authors: Qin Yan , Li Yang , Yang Kun , Huang Zhi Xiong , Chen Jia
Published: October 2014

Magnetic damping composite was prepared by mechanical blending method. As acrylonitrile butadiene rubber was matrix, strontium ferrite magnetic powder was function phase. The vibrating sample magnetometer (VSM) test shows that the magnetic properties of the magnetic rubber composite are related with the content of the magnetic powder and unrelated with rubber matrix. The dynamic mechanical analysis (DMA) and TA method compare show that the damping properties of the composite are improved with adding the strontium ferrite magnetic particle, but the damping properties of composite are best after magnetizing the sample, but the damping properties of the composites decreased with increasing the content of the magnetic powder. The damping properties of the composites at the test frequency 30HZ and 50HZ are higher than 1HZ.
Applied Technology in Effectiveness Assessment of Communication Equipment Based on ADC
Authors: Peng Yong Jun , Tan Fei
Published: October 2014

The applied technology in effectiveness of weapons systems is the ability of weapons to complete the task in the offensive and defensive battle field environment. It is the ultimate goal pursued to develop and applied in the system, and is the most important indicator to evaluate the advantages and disadvantages of weapon systems. In this paper, ADC method is proposed to assess weapons systems. The assessment method of the probability of service, hit probability, mobility and protection for a weapon is studied. Firstly, after the components level division of weapons systems, the solution process of system availability row vector is analyzed based on reliability and maintenance-related. Secondly, the characteristics of laser range finder is analyzed, the whole process of search target is simulated. At last, simulation statistics according to the process of antiaircraft gun burst firing to obtain the burst firing kill probabilities is proposed.
Research on Information Processing with Delay Fair Scheduling Algorithm Based on Resource Situation
Authors: Jiang Xue Ying , Yang Yang , Jing Di
Published: October 2014

Job scheduling algorithm is one of the key technologies Hadoop platform. In this paper, waiting for a fair scheduling algorithm based on delay resource situation. The algorithm periodically obtain status through the use of cluster resources to determine the wait timeout, it has dynamic. Experimental results show that the Delay Fair Scheduling Algorithm Based On the Resource Situation than the original algorithm to some extent reduces the job run time and improve the throughput of Hadoop platform.
Applied-Information Technology with Speech Enhancement Based on EMD and MF
Authors: Li Jin , Shen Kun
Published: October 2014

Aiming at traditional methods cannot get good performance in noisy environments, an improved method for speech enhancement based on Empirical Mode Decomposition (EMD) and Morphology Filtering (MF) was proposed. The method firstly uses EMD to obtain Intrinsic Mode Function (IMF) and for hard threshold processing, then selects appropriate structuring element to construct MF for filtering processing in remaining IMFs. Finally, speech enhancement signal is reconstructed for each IMFs. Experimental results show that the proposed method for speech enhancement has better de-noising effect by comparing time-domain waveform and spectrogram. Moreover, the quality of reconstructed speech enhancement signal has been significantly improved.
Information Processing with Fuzzy S-P Evaluation Method and Application in Evaluating Teaching Quality
Authors: Zhang Shuang , Hu Qing He
Published: October 2014

Teaching evaluation is to process the information of the huge amount of teaching data and to evaluate the teaching activity, process and outcome to provide the basis for the quality and decision of teaching. S-P Chart is a typical evaluating method. The paper introduces both traditional and fuzzy S-P chart. Then, the paper proposes three improved S-P methods, including single-knowledge-point analysis, multi-knowledge-point analysis and cognition analysis. All these three improved methods supplements the shortages of traditional S-P and fuzzy S-P, and are implied in an analysis system of the quality of teaching.
Synthesized and Preparation of Side Chains Containing Nitrogen Atoms Sulfonated Polyimide Membranes
Authors: Li Yu Han , Jin Ri Zhe
Published: October 2014

To improve the performance of sulfonated polyimide (SPI) membrane, especially to heighten water stability. A side chains containing nitrogen atoms sulfonated diamine monomer, 2,5-two (dimethyl amino methylene)-1,4-((paraamino) phenyl) benzene (DMAPB), was synthesized. A series of sulfonated polyimide (SPI) were prepared from DMAPB, 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTDA) and sulfonated diamine (ODADS). The effects of side chains containing nitrogen atoms on SPI membrane are investigated. The basic nitorgen atom introduced in the side chains could effectively resist membrane swelling due to the strong interchain interactions through basic nitorgen atom and sulfonic acid groups. The copolymer SPI 40 showed higher water stability, it could maintain mechanical strength after being soaked in 100 °C liquid water for more than 1000 h.
Data Processing with Combined Homotopy Methods for a Class of Nonconvex Optimization Problems
Authors: Gao Yun Feng , Xu Ning
Published: October 2014

On the existing theoretical results, this paper studies the realization of combined homotopy methods on optimization problems in a specific class of nonconvex constrained region. Contraposing to this nonconvex constrained region, we give the structure method of the quasi-normal, prove that the chosen mappings on constrained grads are positive independent and the feasible region on SLM satisfies the quasi-normal cone condition. And we construct combined homotopy equation under the quasi-normal cone condition with numerical value and examples, and get a preferable result by data processing.
Applied-Information Technology with Distributed Text Feature Extraction Method Based on MapReduce
Authors: Chen Lu , Zhang Tao , Ma Yuan Yuan , Zhou Cheng
Published: October 2014

With the rapid development of Internet technology and information technology, the emergence of a large number of document data, text classification techniques for handling massive amounts of data is becoming increasingly important. This paper presents a distributed text feature extraction method based on distributed computing model—MapReduce. In the process of mass text processing, solve the problem of processing text size limit and inadequate performance, provide the research of text feature extraction method a new way of thinking.
Construction on the Automation and Digitization of Network for University Library
Authors: Chen Qing
Published: October 2014

Along with the popularization of computer and network in all aspects of people’s social life and the combination of computer technology with communication technology, here comes a new information age and network times. People’s need of information characterizes multiple levels and diversity. University library as the information center has to speed up the construction on the automation and digitization of network in order to offer high-quality and high-efficiency information service to meet the readers’ demand of individual information.The principle purpose of information construction of university library is to mine, acquire and spread knowledge to the utmost extent, to provide a platform for readers to share information and to offer them the best service.
A “Visible-and-Controllable” Smart Home System
Authors: Zhang Ran , Meng Jun
Published: October 2014

This paper introduces a smart home system with new user experience. The system uses the mobile smart terminal to recognize the smart appliance based on the real-time image of the smart appliance captured by the terminal, then the terminal generates a user-interface (UI) for the user to control the smart appliance recognized. Using this system, user no longer needs to search the smart appliance that he wants to control in the complicated menu, instead, he just use the camera to capture the image of the appliance, then he will gets the controlling UI of the appliance; it means that as long as you can see the appliance, then you can control it, and that is the “Visible-and-Controllable” effect.
Automation of Communication for Improving Autonomous Interpretation Abilities
Authors: Tian Xian Zhi
Published: October 2014

In the course of improving autonomous interpretation abilities, different methods will be used. At the same time, different channels will also been taken into consideration for improving autonomous interpretation abilities. Automation of communication is one of the channels, which plays an important role in this course with the development of information technology. In the paper, the author has collected some information about automation of communication and at the same time, the author also investigated the scientific channels for learners’? using automation of communucation in different ways. After the investigation and interview of the author, some scientific results will be found after detail analysis of the author. At the same time, some shortcomings of the application of automation of communication can also be found. Some effective improving measures will be put forward to overcome the shortcoming for reform.
PBHT Scheduling Algorithm for Embedded Real-Time Systems
Authors: Song Kai , Li Hai Sheng
Published: October 2014

In the paper, a new scheduling algorithm, priority bitmap and hash table (PBHT) algorithm, is put forward. The important parts of the scheduling algorithm, priority bitmap scheduling algorithm and hash tables are analyzed, and the workflow and time complexity of the scheduling algorithm are described in detail. Series of experiments are designed and completed. The feasibility, rationality, completeness and the scheduling algorithm are verified by the experimental results.
Information Processing and Applied Technology in Hunan’s Forest Fire Risk Regionalization Based on GIS
Authors: Han Zhi Gang
Published: October 2014

The paper collects and analysis the forest fire risk factors of Hunan province, determines the weight of each forest fire risk factor, and chooses fire dynamic clustering model. By using the spatial information processing and applied technology of GIS, the map layers in spatial database management are superimposed, and then the forest fire risk regionalization map is obtained. The results provide a scientific basis for forest fire risk forecasting and forest fire prevention decision.
Hardness and Corrosion Behavior of Aged 6063 Al Alloy
Authors: He Chun Lin , Meng Xiao Dan , Ma Guo Feng , Wang Jian Ming , Du Zhao Fu , Zhao Dong Liang
Published: October 2014

The effect of artificial aging on the corrosion properties of 6063 Al alloy was investigated by optical microscope, field emission scanning electron microscope (FE-SEM) and accelerated corrosion test. Accelerated corrosion test revealed that the corrosion resistance of the alloy strongly depended on artificial aging times, and the corrosion weight gain curve of the aged alloy was greatly in agreement with that of hardness vs. aging times, showing that the lowest corrosion resistance was exhibited at peak aged condition. It is found that pitting is the main corrosion form for the 6063 aluminum alloy aged with different times at 210°C, and slight intergranular corrosion is also found at peak hardness. It is believed that pitting results from galvanic corrosion between Al9Fe2Si2 particles and matrix Al while intergranular corrosion results from galvanic corrosion between Mg2Si and matrix Al.
Microstructure and Property Study on Wear Resistant Composite Coating Produced by Ultrasonic-Assisted Argon-Arc Clad Injection
Authors: Zhang Ning , Chen Hao , Jiang Xu
Published: October 2014

Ni60 self-fluxed alloy powder was coated on the surface of Q235 steel plate by the ultrasonic-assisted argon-arc clad injection technology, then TiC, TiN and Co powder were sprayed by the modificated injection device, and at the same time the powder was vibrated by the ultrasonic-assisted vibration device self-designed. The results shows that through the innovative technology, the wettability and dispersity of the reinforced phase are ameliorated, so as the elements diffusion and binding strength of the cladding layer with the matrix. The microhardness of the composite coating is 1.1 times than that of the coating without ultrasonic assisted, and 4.8 times than Q235 as the matrix. The wear resistance of the composite coating is 11 times than Q235, and 1.6 times than that of the coating without ultrasonic assisted.
Applied Technology with an Improved ICA Algortihm and its Application in Heart Rate Measurement
Authors: Wang Yang , Tan Pei Xiang , Chen An Yuan
Published: October 2014

Heart rate is an important idicator of human physiology,it has great significance for human health in the long-term monitoring process.This research is based on Photo Plethysmo Graphy (PPG) principle.First,get some video via webcam,and then extract the signal of Face PPG.We proposed an improved ICA agortihm,because of the heart rate signal is a non-stationary and nonlinear signal,then,HHT-domain analysis of Face PPG signal.Finally,we succeeed in measuring of the heart-rate.The experimental results show that,using the improved ICA algortihm ,it is not only reduce the iteration ,but also has better measurement.
Influence of Reinforcement Placement on the Creep of Concrete
Authors: Lin Wei , Liu Jia Ping , Liu Jian Zhong
Published: October 2014

The creep of the concrete might cause comprehensive effect on the structure, such as stress redistribution and pre-stress relaxation. To better understanding the significant influence of the creep on the structure, the restriction of the reinforcement should be taken into account. In this paper, the creep of reinforced concrete was studied based on designed experiment with different concrete mixtures and reinforcement configurations. And Dischinger model was used to analysis the experiment results. It was found that, with the increasing of reinforcement ratio, the creep of all concretes could be reduced with a trend that the difference of the creep property between concrete mixtures would be delaminated by the reinforcement. And suggestion was proposed to modify the Dischinger model to better consider the influence of firm structure formed by rebar.
The Effect of Modified Hydrotalcites on Mechanical Properties and Chloride Penetration Resistance in Cement Mortar
Authors: Yang Zheng Xian , Fischer Hartmut , Polder Rob
Published: October 2014

In this paper, two types of modified hydrotalcites (MHT) were incorporated into cement mortars with two dosage levels (replacing 5% and 10% cement by mass). Designated testing programme including strength test, porosity test, and rapid chloride migration and diffusion test were employed to investigate the effect of modified hydrotalcites on chloride penetration in cement mortar. The results based on these tests showed the incorporation of MHT-pAB at 5% dosage in mortar specimens produced a notably improved chloride diffusion resistance with no or minor influence on the development of mechanical strength.
Corrosion Behavior of Steel Reinforcement in Simulated Concrete Pore Solutions with Various pH and Chloride Contents
Authors: Hsieh Shao Heng , Huang Ran , Chi Mao Chieh , Liang Pokuei
Published: October 2014

Corrosion of rebar in reinforced concrete is a major problem affecting the integrity and loading capacity of the structures. Usually concrete pore solution provides high alkaline environment to protect steel from corrosion. However, the ingress of chloride ions or carbon dioxide would reduce the alkalinity and destroy the stable oxide film which could accelerate the corrosion process of rebar. This study was aimed to evaluate the combined effect of pH and chloride contents on corrosion behavior of rebar using simulated concrete pore solutions. Weight-loss measurement were performed to obtain the corrosion rate. Meanwhile, explore the effect of carbonation and chloride contents to Half-cell potential value on mortar and concrete. Test results show that both pH and chloride content are significant factors influencing the corrosion behavior of rebar. Higher corrosion rate was found in the rebar immersed in the solutions with smaller pH and higher chloride content.
Effect of Loading on Permeability of Recycled Aggregate Concrete
Authors: Peng Gai Fei , Shang Ya Jie , Wang Yu Jian
Published: October 2014

In this paper, permeability of concrete after loading at various stress levels, including recycled aggregate concrete (RAC) and natural aggregate concrete (NAC) (at W/B ratio of 0.586 and 0.250), is measured by means of surface infiltration experiment and chloride penetrating test to study the effect of loading size on permeability of recycled aggregate concrete. The results show that there exists a critical stress ratio value of around 0.65 to 0.75 for NAC at W/B ratio of 0.586, and among the four types of RAC, the critical stress ratio exists only in 60R50, while the water permeability coefficient increases linearly with the stress ratio for the other 3 types of RAC. The charge passed of RAC increases with the W/B ratio, and the more the recycled aggregates mixed, the higher the charge passed. As the stress ratio increases, the charge passed increases slightly in samples at W/B ratio of 0.25, while the charge passed of samples at W/B ratio of 0.586, whether NAC or RAC, increases almost linearly.
Internal Curing in High Performance Concrete: Effect of Lightweight Aggregate on Shrinkage and Salt Frost Durability
Authors: Liu Zhi Chao , Hansen Will
Published: October 2014

High performance concrete (HPC) consisting of low water-binder (w/b) ratio and supplementary cementitious materials (SCM) is more prone to shrinkage cracking if subjected to external deformation restraint. The effectiveness of using lightweight fine aggregate (LWA) for autogenous shrinkage reduction is being studied along with implications on salt frost durability. HPC consisting of 0.33 w/b ratio and cementitious replacement level up to 50% by slag cement and natural sand replacement level by LWA of up to 50% is investigated. Results indicate that these concretes exhibit excellent salt frost resistance provided the HPC is sufficiently air entrained. The mitigation of autogenous shrinkage by LWA is analyzed by comparing the spacing of LWA particles in cement paste and the flow distance of retained moisture in LWA to the adjacent paste.