bluuebunny/crossref_metadata_2025 huggingface dataset:
A Research on Ignition of a Boiler by Using Coke-Oven Gas Instead of Light Oil and Alternation of the Boiler
Authors: Shi Hong Wei , Zhang Xing Kai , Wang Dong , Wang Shuai
Published: October 2014

In order to solute the question of boiler ignition in thermal electrical factory of an Aluminun plant,Coke-oven gas was used to substitute for ligtht oil.At the same output of boiler,the cost of start up can be reduced;at low boiler output coke-oven gas can be used to ignite coal,and the ignition was steady.Once upon a time,the coke-oven gas was ignited directly in the air,it wasted energy and caused envirnmental pollution.The coke-oven gas guns were placed in the under secondary air and the middle secondary air,the output of single gas gun was 800Nm3/h;the virtue of the arrangement was to prevent coke-oven gas consuming so much air for the coal.
A Research on Microwave and Conventional Pyrolysis for Low Rank Coal
Authors: Song Yong Hui , Li Xin , Shi Jun Wei , Lan Xin Zhe
Published: October 2014

In this paper, conventional pyrolysis (CP) and microwave pyrolysis (MWP) for three types of low rank coal in western China was studied. The effects of pyrolysis methods and temperature etc on product yields were also discussed. Pyrolysis products were characterized by IR, Gas analysis meter and GC-MS. Results showed that the tar and gas yields in microwave pyrolysis is about 3%-5% higher than those in the conventional pyrolysis. H2 and CO proportions in gas are above 55%. The contents of benzene, aromatic hydrocarbon and phenolic compound in microwave pyrolysis tar are higher than those in the conventional pyrolysis, in addition, C5~C10 substance content in tar is about 5 times as that in the conventional, so the microwave pyrolysis can prompt tar converting to light fraction.
A Water Resource Distributed Detection System Based on Cloud Computing Technology
Authors: Cheng Guang He , Ma Geng , Zhang Rang Yong , Zheng Xiao Shi
Published: October 2014

With the increasing rapid development of China's economy and people's requirements for living water’s quality becoming higher and higher, the safety and sustainability of water resources development becomes increasingly important. Traditional automatic detection system of water resource based on wireless station and GPRS terminal can not meet the needs of detection. In view of this situation，A water resource distributed detection system based on cloud computing technology takes full advantages of cloud computing in management and services, improves efficiency and saves operating cost of the water source detection.
Dispersion and Degradation of Polycarbonate/MWCNT Nanocomposites with Melt Extrusion
Authors: Yadav Poonam , Lee Dong Bok
Published: October 2014

Polycarbonate/Multi-wall Carbon Nanotubes (PC/MWCNT) nanocomposites with 0.55% and 0.77% of MWCNT were prepared by twin-screw compounding extruder. The morphology and dispersion were characterized by SEM. The Raman analysis confirmed the good interaction between carbon nanotubes (CNTs) and Polycarbonate (PC). The TGA result showed that the PC/MWCNT nanocomposites degraded in two time extrusion (TTE) as compared to one time extrusion (OTE), which was attributed to the temperature effect. Inspite of degradation, TTE nanocomposite showed good dispersion of MWCNT in PC.
Distribution of Octylphenol and Nonylphenol in the Sediment of Kaohsiung Harbor, Taiwan
Authors: Chen Chiu Wen , Ke Zhi Wei , Chen Chih Feng , Chang Yi Kuo , Dong Cheng Di
Published: October 2014

In this research we have set twenty survey stations in Kaohsiung Harbor to conduct on-site sampling and monitoring of sediments. The aim is to analyze their particle diameters, water content, organic matter (OM), total organic carbon (TOC), 4-nonylphenol (4-NP) and 4-tert-octylphenol (4-t-OP) in order to understand the concentration distributions and sources of 4-NP and 4-t-OP in the Harbor sediments. The results indicate that the concentrations of 4-NP and 4-t-OP fall within the ranges of 18–27,882 ng/g dw (average 101±3,580 ng/g dw) and 1.1–1,150 ng/g dw (average 44±174 ng/g dw). The concentrations of 4-NP and 4-t-OP in the river mouths’ sediments are apparently higher and gradually decrease nearer the Harbor, especially the 4-NP of the mouth of Jen-Gen River (average 13,236±9,204 ng/g dw) and the 4-t-OP of the mouth of Love River (average 676±411 ng/g dw). This pattern shows that industrial wastewater and untreated municipal wastewater/sewage are the major sources. The correlation analysis indicates that TOC and OM play an important role in controlling the concentration level of 4-NP and 4-t-OP in the sediments. However, in the pollution hotspot, the direct inflow of pollutants would be the crucial factor that determines the concentration and distribution of organic pollutants in sediments.
Evaluation on Potential Ecological Risk of Heavy Metals in Soil of Yanjiao
Authors: Huang Jing Yi , Wang Yu , Liu Zhi Rong , Zhang Ying
Published: October 2014

The separate content of six types of heavy metals (Cd, Hg, Pb, As, Cu and Cr) in soil for Yanjiao area was evaluated in this article. Hakanson Potential ecological risk index was applied to analyze single factor potential ecological risk possibility and comprehensive ecological risk index regarding six types of pollution element in the soil. The result shows that the average value of potential ecological risk index sequences as Cd>Hg>Pb>Cu>As>Cr. The average ecological risk index of Cd is 44.90, which indicates that the soil ecological risk of the area is moderate. The average ecological risk index of other 5 types of heavy metals belongs to mild ecological risk grade. Based on the analysis of comprehensive ecological risk index, 15% of the sample points belong to the moderately ecological risk grade, and the rest 85% sample points belong to the lightly ecological risk grade. Among these elements, Cd and Hg contribute most to the ecological risk, and they are the major risk elements of the ecological risk.
Experimental Studies on the Isothermal and Heat Transfer Performance of Trough Solar Power Collectors
Authors: Liu Yun , Zhang Hong
Published: October 2014

The medium temperature heat pipe is a highly effective heat transfer element through heat exchange due to phase change of the liquid organic working fluid. A medium temperature heat pipe used in solar energy receiver of parabolic trough thermal power generating system has been analysed, and a medium temperature heat pipe with liquid organic working fluid has been designed. The isothermal performance and heat transfer performance of the medium temperature heat pipe with liquid organic working fluid have been tested under various power input and different inclined angles. Test proves that axial temperature difference of half circle heated medium temperature heat pipe is smaller, and the half circle heated heat pipe with inclined angle is 4°and 8°can work stably, having good axial isothermal performance and heat transfer performance, the influence on isothermal performance and heat transfer performance of the medium temperature heat pipe can be neglected.
Experimental Study on Adsorption Capacity of Natural Gas Odorant Tetrahydrothiophene in Soil and Relevant Influencing Factors
Authors: Xie Yu Shu , Dan Mo , Song Bing Xue , Yao Wei
Published: October 2014

According to the practice of city gas odorization, the technological thought that the diffusion behavior of natural gas in soil was indirectly reflected by the adsorption capacity of tetrahydrothiophene (THT) as an odorant of natural gas in soil was put forward and explored. The adsorbed amount of THT in soil samples by gas chromatography-mass spectrometry (GS-MS) with purge and trap was determined. The impact of four parameters (namely gas leakage, water content, particle size and texture of the soil) on the adsorption properties of soil was then quantitatively analyzed. The experimental results showed that at initial stage of adsorption, the adsorption capacity of THT in soil sample was linear positively correlated with gas leakage and was negatively correlated with water content of the soil and there were no significant differences between particle size and texture of the soil and the amount of THT.
Influence of Surfactant Sparys on Agglomeration of Inhalable Particle
Authors: Sun De Shuai , Fang Long , Liu Ya Li
Published: October 2014

Inhalable particles suspended in air were an important pollution of atmospheric Environment. Because of very small in size, they were different to be captured by conventional filter. Chemical active agent, surfactant and flocculate, were introduced into chamber and encouraged the agglomeration of inhalable particles. Nonionic surfactant could reduce more than 30% of particles, while ionic surfactant could lead to the decrement of 23-26%. The particle removal efficiencies were only 15-18% in the presence of polymer flocculate and slightly above that of water. The larger droplet of spray favored the agglomeration of inhalable particles. Increasing the surfactant concentration resulted in the higher removal of inhalable particle.
Simulating the Spread of Smoke in Hostel Fires
Authors: Lin Cherng Shing , Wu Ming En , Huang Hsin Chuan
Published: October 2014

Because public areas in Taiwan such as hostels, movie theaters, supermarkets, stadiums, and large entertainment venues are typically packed with people, when fires occur, the smoke and high heat often lead to human casualties. Therefore, the studies on fire dynamic characteristics are essential. In this paper, we studied a major fire accident occurred in one of Taipei’s major hostels, during which the lodgers awoke and attempted escape. This accident led to eight deaths; the victims either died from the burns they sustained or choked to death in their bedrooms or in the staircase. The fire accident resulted in the greatest amount of human casualties in Taipei over the past two decades. The fire dynamics simulator developed by the National Institute of Standards and Technology was used in this study to analyze the fire dynamic field behavior. The data showed that the fire started in a room on the second floor and that the smoke spread to the entire building within approximately 3 min. Our simulation produced similar results. It is hoped that the findings can be used to improve the safety features and enhance the future fire protection designs of similar buildings so that the heavy human casualties and property losses would be greatly reduced.
Research on Reliability Evaluation Methods of Composite Generation and Transmission System
Authors: Cai De Hua , Cheng Le Feng , Su Lin Lin , Wang Li Gou , Yu Tao
Published: October 2014

The basic mathematical method for power system reliability evaluation was indicated, the simple and complex system was respectively introduced, several methods of reliability analysis of simple was given in this paper, and the reliability evaluation indexes system and methods of composite generation and transmission system was analyzed, then focused on state enumeration method applied in the reliability assessment of system, the detailed example analysis was given and the adequacy reliability indexes were computed in detail. Finally, the current reliability evaluation and status of composite generation and transmission system was summarized simply and its reliability evaluation algorithm steps applied in current actual engineering projects was given.
Differential Equation Based Adaptive Distance Relaying Setting Method for Series Compensated Line
Authors: Zhang Jin Hu , Xu Zhen Yu , Su Zhi Peng
Published: October 2014

The distance relays of transmission lines find limitations in the presence of series compensated capacitor. One of them is the distance relay setting issue, in which either over-reach problem or under-reach problem may occur. To deal with this issue, a differential equation based adaptive distance relaying setting method for series compensated line is proposed. As for it do not need to identify whether SC/MOV is in fault loop, not need to know the parameters and the operating states of SC/MOV/GAP, and furthermore, it can be realized without the iterative calculation, it is very suitable to be used for the distance relaying adaptive setting of series compensated line. Simple simulation results certificate the proposed adaptive setting method.
Research on Physical Vulnerability Assessment Method of Grid Infrastructures - Taking Substation as an Example
Authors: Men Yong Sheng , Jin Long Zhe , Xu Xi Yuan
Published: October 2014

Grid infrastructure is vulnerable to damage or breakdown by various of natural disasters and man-made disasters to cause a loss of all or parts of the function of power system. In this paper, through the analysis of various factors affecting the hub substation physical vulnerability of hub substation such as human factors, natural disasters and equipment factors, calculate and classifiy the influence degree of each factor on the physical vulnerability. Put forward a series of suitable vulnerability assessment method for China's national hub substation. What’s more, take a specific hub substation for example to verify the assessment methods that provided a basis for safe operation of power facilities and disasters prevention.
Review of the Relationship between Harmonic and Parallel Capacitor Fault
Authors: Ou Yu Qiang , Cheng Le Feng , Wen Jian Zhong , Qiu Xuan Yu , Yu Tao
Published: October 2014

The parallel capacitors are the most important reactive power compensation devices in power system, while the power system harmonic pollution is becoming increasingly serious in recent years, the accident that caused capacitors fault and damage by overload harmonic always happened. Based on this background and summary of the existing research results, thermal effect and performance index of capacitors are introduced, and analyzed the mechanism of interaction between harmonic and capacitor, then the effect and harm of running capacitor under harmonic conditions are elaborated, finally summarized the feasible measures for harmonic suppression and protection of capacitor devices.
Structural Behaviors of Hybrid High Performance RC Beams with Web Openings Using Hybrid Fibers
Authors: Lee Seung Jo , Park Jung Min
Published: October 2014

The purpose of this study is to evaluate the flexural behavior of hybrid high performance RC beams with web openings (Hy-HPRWO) that are constructed by using circle steel tube, hybrid fibers and Garnet, Fly-ash. One regular RC beam with openings (HPRC) and four Hy-HPRWO specimens were manufactured and tested under monotonic loading. It was evaluated by flexural experiment of Hy-HPRWO through comparison of failure mode, load-deflection curves, ductility and ultimate load (Vu). Test results showed that the ultimate load of the Hy-FPSC3 specimens were approximately 5.82% better than that of the HPRC, in addition their ductility behavior was 68.1% better than the HPRC.
Dynamic Stability Analysis of Single-Layer Lattice Dome Considering Member Imperfections
Authors: Wang Shang Qi , Wang Jun Lin , Zhao Shu Li , Sun Jian Heng
Published: October 2014

Dynamic stability analysis is a very important research project in the space structures. Up to now, in most researches, the imperfections of members are not included in the dynamic stability analysis for the single-layer lattice domes. In this paper, using multiple-beam method to simulate the initial bending deformation of the members, the dynamic stability behavior of a Kiewitt-8 single-layer lattice dome under three dimensional earthquake actions is analyzed by considering the member imperfections and the initial geometrical imperfections. The influence of member imperfections to the dynamic stability behavior of the structure is investigated.
A Control Strategy with Series-Parallel Inverter for Micro-Grid Operation
Authors: Liu Gui Ying , Gui Yong Guang , Su Shi Ping , Luo Qian , Wu Jiang , Jia Xue Rui
Published: October 2014

For the different operation mode of micro-grid, an improved droop control method and a parallel inverter was proposed depending on the study of micro-grid inverter. Grid-connected interface contains a series inverter and a parallel inverter, and can be switched to select different work mode. The parallel inverter can eliminate harmonic, compensate three-phase imbalanced current to improve the quality of the power delivered to the utility grid. In islanding operation mode, the improved droop control strategy was applied, where an integral controller was introduced. So it can reduce the inverter output voltage amplitude. Thereby it can restrain circulation and realize the power of self-distribution. The effectiveness and feasibility are verified by the simulation result.
A New Method to Predict Gas Production Based on Fuzzy BP Artificial Neural Network
Authors: Zhang Ran , Zhou Jun , Li Cheng Yong
Published: October 2014

BP neural network has been successfully used in the gas well productivity prediction, but as a result of neural network is sensitive to the number of input parameters, we had to ignore some factors that is less important to the gas well productivity. In addition, the existing various productivity prediction method cannot consider the influence of some important qualitative factors. This article integrated the advantages of fuzzy comprehensive evaluation and BP neural network, fuzzy comprehensive evaluation method is used to construct the BP neural network's input matrix, and BP neural network learning function is used to solve the connection weights, so as to achieve the aim of predicting gas production. This method not only can consider as many factors influence on gas well production, ut also can consider qualitative factors, so the forecast results of the new model are more realistically close to the actual production situation of reservoirs.
Accuracy Analysis of Robot Binocular Vision Calibration
Authors: Liu Jia , Fu Wei Ping , Wang Wen , Qie Na , Wang Wen Yun
Published: October 2014

The accuracy of calibration is a critical link which affects the accuracy of the machine vision system. Several factors affecting the accuracy of the binocular vision calibration were analyzed. To construct a reprojection error was as a cost function. Deference controllable factors were set to getting intrinsic parameters. And then reprojection error was depicted utilizing a variety of graphical form, such as 2D coordinate drawings, line charts and cross-hatched map. The correlation between parameters which were paid attention in calibration process was analyzed clearly and directly. The selection of optional parameters is described based visualization. The selection basis of optional parameters was offered by experiments.
Based on PFC Prediction Algorithm of Cross-Cutting Machine Electronic CAM Control Simulation
Authors: Huang Meng Tao , Zhou Yan Jun
Published: October 2014

Predictive functional control (PFC) is an advanced control algorithm, it belongs to the model predictive control. Electronic CAM is an important component of cross-cutting machine, is driven by servo motor, its structure and control performance determines the length of paper cutting. Around the PFC algorithm and the control of electronic CAM, this paper aimed at the speed of the cutter and the paper feed speed synchronization problems and have to cut the length of the paper is different, is put forward based on the predictive functional control (PFC) algorithm to predict the change of parameters of electronic CAM model itself. In this article, through the simulation, proving that PFC algorithm has strong anti-interference ability, traceability and stability.
Design of Auto Dust Collection System in Different Regions of Blackboard
Authors: Wei Wei , Guo Dong , Liu Li Ding
Published: October 2014

New blackboard dust collection system mainly be used for conventional teawching actions. It divided board into four different regions without changing basic structure, when people go into the view of sensor in the one of regions which will drive the quit fans to collect the dust produced during writing and clearing words on the board. The device includes two parts, mechanical structure and the region control system. For structure, be made up with up and down parts, the dusting devices and fans are chose by the stress analysis of the dust model, and then begin design work. For control system, using photo-electric switch to drive fans, and the angle of wind board is controlled by DC motor, and chip microcomputer STC89C52 is chose as the system core to achieve logical functions. The system can effectively reduce the harm from dust to the human and equipments during teaching. It has great characteristics including high efficiency and energy saving, low cost, simple structure, easy operation, high reliability and practicality.
Design of Two-Wheeled Self-Balancing Robot Control System
Authors: Li Jing , Zhang Wei , Xu Bing
Published: October 2014

The main controller STM32F103VET6 was used as the core of the system. The change of angle and angular velocity was detected by accelerometer and gyroscope built-in six axis attitude sensor MPU6050. The double closed-loop control was used to regulate the speed of DC motor JGA25-371, so as to adjust the posture of the robot. Test shows that the whole system design is simple, good stability and anti-jamming.
Ethernet-Based Data Acquisition Technology of Open CNC System
Authors: Sa Ji Ming , Sun Ai Cheng , Pan Yong Fen , Bie Yan Bo , Zhang Ting Ting
Published: October 2014

It describes the development and the present situation of the open CNC system technology. Taking the FANUC30i and Siemens 840D CNC system as an example ,it does an explicit research on data acquisition of the CNC system based on the Ethernet. It proposes a solution with high practicability and low cost for the users who want an online monitoring and alarming system of the CNC system.
Mechanical Parts Defect Detection Method Based on Blind Source Separation Algorithm
Authors: Nie Jing , Jing Hong Lei , Zhang Nian
Published: October 2014

A blind source separation technique is widely used in voice, video, communications, medical, mechanical failure signal processing, and data mining, and many other fields. Such a broad application prospects, making the blind signal separation problems on continuously were widespread concern experts and scholars at home and abroad. This paper describes the meaning of blind source separation techniques, a detailed description of the application of this technique to detect defects in terms of mechanical parts, due to the blind source separation algorithm is a regular in the development of the theory, and how to better integrate its application in the field of diagnosis defective parts, will be an important issue in the future is worth further exploration.
Minimal Control Synthesis-Skyhook Mixed Control for Magneto-Rheological Semi-Active Suspension
Authors: Zhang Jin Qiu , Huang Da Shan , Peng Zhi Zhao , Zhang Guang Lei
Published: October 2014

Standard skyhook control algorithm is inefficient in controlling of the parameter-varying magneto-rheological semi-active suspension system. Based on model reference adaptive control theory, a minimal control synthesis-skyhook (MCS-SH) mixed control algorithm was designed. Ideal skyhook control was taken as the reference model; the feedback control law of MCS algorithm was improved based on the feature of magneto-rheological damper (MRD). The results illustrate that the sprung mass acceleration and suspension deflection are decreased through MCS-SH algorithm, the ride comfort of vehicles can be improved significantly, and the MCS-SH algorithm can adapt to the variation of suspension parameters.
Research of Screw-Machine Electrical Control System Based on IPC
Authors: Zhu Shao Fu , Yin Zhi Xiang
Published: October 2014

Bolt as a connecting device plays more and more important role in various types of industry equipment. According to the needs of the domestic industry and on the basis of the automatic screw tightening control system requirements, this paper describes the design of screw-Machine electrical control system based on IPC independently.The main work probes into the electrical control system’s hardware structure and software structure.
Vehicle Stability Integrated Control Based on Adaptive Optimal Approach
Authors: Li Jiong , Jia Xiao Ping , Yu Kui Long
Published: October 2014

An adaptive optimal control system for vehicle stability integrated control was proposed based on a hierarchical integrated control system. The generalized lateral force and moment required to achieve vehicle motion was calculated based on sliding mode control method. Through the control allocation, the desired yaw moment will be properly distributed to each wheel by using nonlinear weighted least-squares (WLS) algorithm . The simulation results show that the proposed control system can effectively improve vehicle stability and handling performances by taking full advantage of the tire force.
Virtual Manufacturing of Straight Bevel Gear Based on Pro/E Wildfire
Authors: Lin Ji Shun
Published: October 2014

Making use of function of NC programme provided by Pro/NC, aiming at general NC milling machine and using general milling cutter, this thesis attempts to establish the tool path of straight bevel gear’s finishing machining and then put forward the idea of processing piece by piece. In this way, “over cutting” and “short cutting” can be avoided and the precision of process can be improved. Finally, the accuracy of product designing and manufacture can be tested by post-processing of numerical control program of straight bevel gear’s finishing processing with the VERICUT’s simulating.
Research of Li-Ion Battery’s Protection Circuit Used in AGV
Authors: Zhang Hao Ming , Wang Ying Hai , Peh Lian Soon
Published: October 2014

Due to the merits of small size, high power density, high voltage, low self-discharge and low resistance, li-ion battery can replace traditional power battery and be used in AGV system. Over-voltage and low-voltage protection circuit, temperature protection circuit, equalizer circuit, self-locked circuit and voltage display circuit are designed; Equalization circuit can keep consistency of each cell used in the system; Self-locked circuit can make the system much more stability while the display circuit can ahcive the information of the power system. Experiments prove the effectiveness of these designs.
Study on Fault Location Technology of the OPGW Transmission Line
Authors: Wang Xiao Tang , Zhang Long , Wang Yao Fei , Song Wei Chen , Li Hong Jie
Published: October 2014

High voltage transmission line is the main channel of transmitting electricity, and the operation reliability is closely related to power effective transmission. In this paper, by analyzing advantages and disadvantages of traveling wave method, transmission line fault location technology based on the OPGW cable was proposed. Basic principle and advantages of this fault location technology were introduced. Three-phase overhead lines fault model was constructed based on PSCAD. Through simulations under different fault types in different fault points, the transient process of the fault phase voltage waveform was analyzed in detail and the fault point was located using the wave pattern features. By comparison, the simulation results and the actual location of fault point were in good agreement, which proved the feasibility of this fault location method.
A Distributed Index Tree and its Concurrency Control Algorithm
Authors: Gu Wei Jie , Wang Yun Liang
Published: October 2014

This paper presents a new distributed index tree named RDB+-Tree and a concurrency control algorithm named VTC-RDB+. In RDB+-Tree, the leaf node is organized for a hash list. The principle of VTC-RDB+ algorithm can be established by utilizing multiple elements which are in favor of concurrency control and by combining with version and time control method. Theoretical analysis and experimental results show that the RDB+-Tree index tree and VTC-RDB+ algorithm can effectively enhance the query and updating performance of the massive data in the distributed circumstance.
Synthesis of Two Analogs of AKT Inhibitor-IV via Amine-Exchange Reactions
Authors: Wang Cheng Jun , Gong Shan Shan , Sun Qi
Published: October 2014

The N-methylphenylamino group conjugated to the 2 position of the benzimidazolium core via a vinyl group in the structure of AKT inhibitor IV was efficiently substituted by treating AKT inhibitor IV with excess of N-methylcyclohexanamine and N-methylbenzylamine. The two new compounds were characterized by 1H and 13C NMR, IR, and mass spectroscopy. The control experiment with benzimidazole precursor of AKT inhibitor IV resulted in no amine-exchange reaction, indicating that the positive charge in the benzimidazolium salt is the major factor for the activation of the terminal conjugated N-methylphenylamino group.
Laser Stimulation Control System Design of the Auditory Nerve
Authors: Yang Nan , Wang Jing Xuan , Tian Lan , Wang Yong
Published: October 2014

Optical stimulation of the inner ear, the cochlea, has been proved as a possible alternative to conventional cochlear implant with the hypothetical improvement of dynamic range and frequency resolution. Moreover, the laser has good directionality character and optical signal between adjacent fibers do not readily interfere. Therefore, cochlear implant based on optical stimulation is promising for further exploration and development. The design of an experimental system for optical stimulation of the cochlea is introduced in this paper. For the important part, the selection of NIR laser and the optical signal control methods were discussed. The pulsed laser light was coupled by fiber or fiber array and radiated to the cochlea. For each channel laser pulse, the width modulation was varied from 10us to 1ms, the pulse repetition rate from 5 Hz to 10 KHz, single pulse energy from 0 to 3.6mJ. The application of high precision DAC made the resolution of the pulse energy regulation up to 1uJ/div. The experiment results show that this design and implementation can meet the requirements on further optical stimulation of the cochlea research.
Coordination of Road Construction Materials and the Environment
Authors: Wang Wei
Published: October 2014

This paper makes a brief introduction to the concept of environmental materials and the meaning of road construction materials for environmental ethics. In addition,the paper also discusses a variety of coordination of road construction materials and the environment form the following four aspects :to improve the material performance, to save natural resources, to make full use of waste and to purify the environment.As a result,the life cycle assessment (LEA) method should be put forward to evaluate the road construction materials and the environment coordination.
Progress in the Studies of Multifunctional Triphenylamine Materials
Authors: Chen Hong Yun , Fan Cong Bin
Published: October 2014

Triphenylamine derivative is one of the multifunctional materials which has attracted considerable interest of research for their unique radical properties containing triphenylamine unit with higher holes mobility, excellent photoelectric conversion capability. The three benzyl rings of triphenylamine unit can connect different functional groups which can display different activity in the fields of organic solar cells, electroluminescence, electrochromism, optical limiting and chemical sensors. Moreover， the developing prospects of triphenylamine derivative are also briefly discussed.
Analysis on Thermal and Flow Field of Four-Wheel Drive EV Controller
Authors: Qi Hong Zhong
Published: October 2014

Electrical vehicle (hereafter EV) controller has proper function under the circumstances of interval thermal field due to controller sensitivity; therefore flow field and thermal field are key performance of controller application. Methodology is discussed; optimal flow field and thermal field are determined by use CFD simulation, battery frame material is confirmed as well.
The Structure Design and Numerical Simulation of Internal Flow Field with High Efficiency Low Resistance Cyclone
Authors: Li Liang
Published: October 2014

Introduces the structure and main characteristics of high efficiency low resistance cyclone dust removal, the use of fluid finite element analysis software for the internal flow field is simulated. It can be concluded that gas flow in the cyclone separator, pressure field, velocity field, such as distribution, and on the basis of the flow field calculation results for the structure design about analyzed and discussed.
A Fuzzy Logic Scheme for Lateral Control of an Unmanned Vehicle
Authors: Zhang Yu Fang , Wang Xiao Nian , Jiang Ping , Zhu Jin
Published: October 2014

The purpose of unmanned vehicle lateral control is to track a desired trajectory in a small error, in order to achieve a stable tracking under different pavements and wind resistance conditions. This paper presents a vehicle lateral control scheme based on fuzzy logic control. A simplified vehicle lateral dynamics model is first obtained by linearizing the original 6-DOF vehicle model, and then the lateral control is decomposed into two modules: steering wheel angle control and steering wheel speed control. Fuzzy logic control for the two modules is developed and simulated by using CarSim and Simulink. The results demonstrate that the fuzzy controller can achieve a high tracking accuracy with a good dynamic performance.
Applied-Information Technology in a Kind of SF6 Gas Density On-Line Monitoring System
Authors: Xiang Qiong , Wang Quan
Published: October 2014

The SF6 gas is popular used in high voltage switchgear because it has some advantages such as the electrical disruptive strength or the electric light arc quenching capability. This means that the functional safety of the entire system is strongly depend on the density of SF6 gas which is why it must be monitored. This paper presents a design of the on-line monitoring system of the density of SF6 gas of electronic transformer. The monitoring system, which base on Virtual Instrument, enhances both the flexibility of digital signal processing and the computing speed. On the other hand, the software exploitation, debugging and improving are easier, compared with the hardware circuit. The realization with virtual instrument is flexible and with low fabrication costs and shorten the period.
Compressed Sensing Aided Channel Estimation for Power Line Communications
Authors: Liu Xuan , Lin Da Peng , He Ye Shen
Published: October 2014

In this paper, we address a channel estimation scheme for power line communication systems based on compressed sensing techniques. With the properly designed pilot symbols, the received signals at the receiver can be reconstructed from a set of random projections, benefiting from a reduced sampling rate. Moreover, we propose a novel channel estimation structure for PLC systems, which can be applied for appropriate system design. Eventually, simulation results demonstrate that the proposed algorithm outperforms other algorithms and reduces the sample rate significantly.
Design of the Parallel Coupled Microstrip Bandpass Filter
Authors: Zhao Shuang , Chen Dian Ren
Published: October 2014

A design method of microstrip filter with good isolation is presented. In the paper, the design method of microstrip bandpass filter is introduced, and one example filter with 3.075GHz center frequency, 9% relative bandwidth is given. With the aid of microwave HFSS software, the microstrip filter is simulated. The result of simulation shows the microstrip filter has an excellent frequency response.
Design of Millimeter-Wave Emission Component
Authors: Zhao Shuang , Zhang Le Le
Published: October 2014

In recent years, with the development of millimeter-wave MMIC chip, millimeter wave technology has been widely used. The millimeter-wave transmitter front-end is designed in this paper. By using second harmonic mixers, we reduce the operating frequency of the oscillator. By using the side exit microstrip - waveguide structure, we strengthen the compact structure. Test results show that the transmitter front-end transmission power is 33dB and its transmission band is 35.5-36GHz.
Research of Communication of Low Voltage Feed Switch Based on Power Line Carry
Authors: Wang Da Wei
Published: October 2014

The development of power line carry technology provides a new possibility way of reform for low-voltage feed switch. We want to find the realization methods and the key technologies of the communication module in the mine use low voltage flameproof feed switch. It also offering solutions in view of the possible interference, and partly using MATLAB simulation analysis methods to validate. Methods of this paper provide a guideline for the design of communication module in the mine use separated explosion low voltage switch.
A Time Synchronization Algorithm Based on Cluster-Tree
Authors: Gang Hao , Zhuang Yi
Published: October 2014

Concerning the problem that classical time synchronization algorithms applied to large-scale Wireless Sensor Network have low precision and high energy consumption, this paper proposes a time synchronization algorithm based on cluster-tree. The algorithm can decrease the synchronization hop count by constructing a spanning tree, and uses two-way SRS in inter-cluster and one-way ROS in intra-cluster to reduce the number of messages required for the network synchronization. The experimental results show that the algorithm can keep the network synchronization precision at a higher level and effectively reduce energy consumption of nodes compared with the RBS and TPSN.
Applied-Information Technology in Adaptive Kalman Filter with Model Error and Noise Error
Authors: Wang Juan , Tao Wei Wei , Wu Chun Ying
Published: October 2014

Kalman filter is successfully used to predict the object position under occlusion in this paper. Firstly, according to the target location in the previous frame, Kalman filter predicts target location in the current frame adaptively.Secondly, find the real target location in the neighborhood by mean shift algorithm. Finally, update the filter parameters. Because the adaptive Kalman filter predicts target location through system equation, it can improve the tracking effect in occlusion in a certain degree.
Optimization of Operating Mode in Copper Flash Smelting Process
Authors: Shao Yi Yuan , Shao Fei
Published: October 2014

A batch of operating parameters which need to be resolved on line are represented by operating modes.Operating mode optimization for copper flash smelting process based on fuzzy neural networks is presented. First of all, the optimal samples set is screened from the historical samples set. Then mode decomposition based on fuzzy neural networks is used, and chaos genetic algorithm is used to rake the optimal operating sub-pattern.This way is used to copper flash smelting process.The simulation result shows that this way can guide production.
Applied-Information Technology in Improving Bloom Filter-Based Discovery Protocol for DDS Middlewarein Consideration of QoS
Authors: Bian Hua Xing , Xia Zheng Xin
Published: October 2014

The basic RTPS implementation for discovery protocol need to waste a lot of memory space and network traffic. SDPBloommake use of Bloom Filter to reduce the memory requirement and network load in thediscovery process,but it can not deal withthe scenarios that many Endpoints with common Topics but with heterogeneous andincompatible QoS settings. To solve the problem,this paper propose a improved discoveryprotocol called SDPBloom_QoS. SDPBloom_QoS give a method that can put QoSinformation into Bloom Filter. Then provide both analytical andexperimental studies. Results show that SDPBloom_QoSis more powerful than SDPBloom.
Applied-Information Technology in Reconstruction of Crime Scene Based on Virtual Reality
Authors: Xu Feng
Published: October 2014

With the development of virtual reality system, it provides powerful methods support to the research of forensic science. In this paper we first research the mainstream virtual engine and choose the UDK (Unreal Development Kit) for simulation, which is fully functional and easy to be used. Then, the prototype system of three-dimensional reconstruction for crime scene was established. The flow of virtual reality simulation, scene management, texture and the motion simulation of virtual human were discussed. Finally, we find a solution for the problem of scene investigation and reconstruction, which can promote the development of criminal technology, observe the crime scene from Multi-angle and improve the efficiency and the accuracy of judgment.
Research on Applied Information Technology with Web Application in Online Cooperative Learning under Cognitive Styles
Authors: Li Wen Juan , Wang Shu Ping
Published: October 2014

With the development of information technology web-based teaching and learning have become an indispensable part in distance education. However due to the lack of face-to-face communication between teachers and students in web environment distance education in practical operation has inevitably encountered some difficulties one of which is the failure of web-based synchronous interaction. For example, individual learning hasn’t yet been realized in online synchronous discussion. Students have different cognitive styles which play a decisive role on their learning habits and learning behavior. To actualize the individual learning in web-based synchronous discussion, the research has tested cognitive styles of subjects by graphic test, observed performances of the three cognitive styles in web-based synchronous interaction, and analyzed the impact of different cognitive styles on web-based synchronous interaction in terms of cognitive styles and participation, and cognitive styles and interaction quality.
Effect of Artificial Aging on Salt Spray Corrosion Resistance of 2024 Al Alloy
Authors: He Chun Lin , Liang Yan , Bai Ying Ying , Ma Guo Feng , Wang Jian Ming , Du Zhao Fu , Zhao Dong Liang
Published: October 2014

The effect of artificial aging on the corrosion resistance of 2024 Al alloy was investigated by field emission scanning electron microscope (FE-SEM) and accelerated corrosion test. For comparison, the solution treatment followed by air-cooled and water-quenched samples were also researched. Accelerated corrosion test revealed that the corrosion resistance of the alloy strongly depended on artificial aging times, and the weight gain of the aged alloy increased first and then decreased with increasing the aging times, and a maximum value was found at peak aged condition. The air-cooled sample had the highest weight gain while the water-quenched one had the lowest weight gain among all the samples. The corrosion morphologies showed that pitting and localized intergranular corrosion were the main corrosion forms for the air-cooled and aged 2024 Al alloys. However, only pitting corrosion took place on the water-quenched samples. The pitting and intergranular corrosion resulted from galvanic corrosion between secondary particles and matrix Al, and between grain boundary precipitates and matrix Al, respectively.
Biodegradation of Aniline by Alkaliphilic Strain Bacillus sp. Strain AN2 under High Salinity Condition
Authors: Liu Guo Yong , Zhang Xing Bing , Huang Ying Ping , Wang Xiao Ling , Hu Ya Ping
Published: October 2014

Aniline is considered as an environment hazard. Aniline-containing wastewater frequently has elevated salinity and high pH, which is generally not degraded by neutrophilic bacteria. The research explored the degradation ability of aniline by the novel isolated bacterial strain under alkaline and hyperhaline conditions. The strain was designated Bacillus sp. AN2 based on 16S rDNA sequence and Biolog Microstation Identification System. This strain had an unusually high salinity tolerance in minimal medium (0-6% NaCl, w/v). The optimal pH for microbial growth and aniline biodegradation was pH 9.0. For the initial concentrations of 200, 500, and 800 mgL-1, 95%, 74% and 62% of the aniline was degraded, respectively. The results suggest that the strain has potential for aniline degradation under alkaline and elevated salinity environmental conditions.
Material Properties and Optimization Design of Tennis Adhesive Formations
Authors: Zhang Xin Yu
Published: October 2014

By studying the effects of reinforcing system, tackifier, vulcanization system and solvent on properties of tennis ball adhesive (of which the main material is NR), the purpose of this article is to achieve the optimized design for adhesive formulations of tennis ball. Optimized formulation is: NR100, carbon black N220 of 30, zinc oxide of 8.3, stearic acid of 2.2, phenolic tackifying resin of 3, accelerator CZ/D of 1.5/1 and sulfur of 3. Using this formulation could make the obtained adhesive with good properties, and accordingly make the finished balls with excellent adhesive properties and air-tightness as well as meet the design requirements.
Influence of Recycled Aggregate Defects on the Durability of Recycled Aggregate Concrete
Authors: Peng Gai Fei , Yang Juan , Wang Jing Yan
Published: October 2014

An experimental investigation was conducted on the durability of recycled aggregate concretes with the water to binder ratios of 0.26 and 0.60, including chloride ion penetration resistance test, freezing-thawing resistance test and water penetration resistance. Natural aggregate, recycled aggregate untreated and recycled aggregate treated by sulfuric acid solution, were employed. Results indicated that, 3 mol/L acid concentration and the 7 days soaking duration was the optimum to remove the attached mortars in recycled aggregate, and its removal rate could reach to 90.8%. Water penetration resistance, chloride ion penetration resistance and freezing-thawing resistance of concrete with 0.26 W/B was superior to that of concrete with 0.60 W/B. The more pores in the internal of concrete with 0.60 W/B could be attributed to that. Durability of recycled aggregate concrete, incorporating recycled aggregate treated by sulfuric acid solution, was improved. In particular, the improvement in recycled high strength concrete was significant.
Investigating informality in construction: philosophy, paradigm and practice
Authors: Gajendran Thayaparan , Brewer Graham , Runeson Goran , Dainty Andrew
Published: October 2014

The complex interrelationships commonly enacted as a consequence of project team activity take a number of different forms, including those formally dictated by contract conditions. However it is becoming increasingly apparent that project performance is affected by informal relationships, though their investigation is notoriously difficult. This paper proposes that these difficulties arise partly from the nature of the informalities themselves, but also as a consequence of the philosophical position taken by researchers and their consequent methodological/paradigmatic posture, and its impact upon those being studied. It consequently proposes a subjectivist investigative framework that accommodates multiple philosophical points of departure, matching them to a range of alternative methodologies, and indicates the desirability of blending to reflect the peculiarities of each context under investigation. The framework also accommodates the practicalities of putting complex methodologies into action. The paper concludes that this framework presents opportunities to conduct rigorous in-situ investigations of informality at work, leading to authentic and deep insights that would otherwise remain unseen
The Demise of the Journal Ranking: A Victory for Common Sense
Authors: Runeson Goran
Published: October 2014

The content of this comment is the private opinion of the author and doesn't necessarily reflect the editorial policy of the journal or the opinions its stakeholders.
Can Project Alliance Contracts deliver Australia’s National Broadband Network?
Authors: Rose Marianne
Published: October 2014

The Australian Government has commenced an 8-year project to build and operate a new super-fast broadband network. This $43 billion dollar project aims to connect 90% of Australians to a 100 Mbps broadband service. Given the uncertainties associated with the project, this paper argues that an alliance contract structure is a suitable model for the delivery of the National Broadband Network.
The Lords of Strategy: The Secret History of the new Corporate World
Authors: De Valence Geard
Published: October 2014

Walter Kiechel III, Boston, Harvard Business Press, 2010, ISBN 13: 978-1-59139-782-3 (hardcover), 347 pages, USD 26.95, AUD 53.95, GBP 18.99.