bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of a Thin CBN Grinding-Tool by Compound Process
Authors: Chen Shun Tong , Lai Yun Cheng
Published: September 2013

This study presents a compound process combining composite electroforming with wire Electrical Discharge Machining (w-EDM) for developing a thin cubic boron nitride (CBN) grinding-tool. A precisely designed set-up in which a small compound depositing tank providing effectual convection of a compound electroplating solution to help fabricate a CBN grinding-blank is presented. A funneled entrance design for converging CBN grits in the working tank and creating a depositing effect on the substrate is employed and proposed. Considerable micro CBN abrasives are evenly embedded into the nickel-based coating layer, which offers enough abrasives for grinding-edge. Subsequently, the coated grinding-blank is trued and dressed by using w-EDM to form a multiple thin CBN grinding-tool. Experimental results indicate that the electroforming process can create a Ni-based CBN layer of high-integrity under current density of 2 ASD and concentration of 8.6 g/l CBN grits. Moreover, the CBN grinding-edge of 10 μm in thickness (each edge) can be achieved.
Conductive Distributed Bragg Reflector Fabricated at Low Temperature
Authors: Chu Ann Kuo , Tien Wei Chen
Published: September 2013

A conductive DBR electrode fabricated using the single Indium tin oxide (ITO) conductive material is proposed. The high refractive index of the dense ITO film was achieved by RF sputtering at room temperature and the porous ITO film with low refractive index was prepared by applying supercritical CO2 (SCCO2) treatment at 60 °C on gel-coated ITO thin films. The index contrast of the ITO bilayers was higher than 0.5 at a wavelength of 550 nm. In addition, small deviations on the optical thickness of the ITO bilayers were observed during the DBR stacking processes. For the DBR comprising 4 periods ITO bilayers, the reflectance and sheet resistance of 72.8% and 35 Ω/ were achieved.
Interpretation of Linear Structure from Remote Sensing Imagery in Huize Pb-Zn Deposit, Yunnan Province, China
Authors: Xu Jun Long , Wen Xing Ping , Yu Min , Yang Yang , Wang Jun , Zhang Li Juan , Zhou Yang
Published: September 2013

Huize Pb-Zn deposit is located in the transfer part of Tethys Himalayan tectonic domain and the Pacific tectonic domain. This research used Landsat7 ETM+ remote sensing image with 30m spatial resolution. Based on the true color composite image with Band 321, we get the linear structure interpretation figure supplemented by spatial filtering processing. From the distribution regulation in radar chart of lineaments orientation and contour map of the density for the linear structure, we can see that the dominant structure orientation are NE and NW. They are consistent with basic structural pattern of Huize Pb-Zn deposit from a quantitative point of view. This indicates that a linear structure interpreted results can objectively reflect the regional tectonic features, so it is true and reliable.
The Kinematic Design of 2K Type Planetary Gear Reducers with High Reduction Ratio
Authors: Hsieh Long Chang , Tang Hsiu Chen , Chen Tzu Hsia , Gao Jhen Hao
Published: September 2013

3K type and 2K-2H type planetary gear trains can be designed to have high reduction ratios. Due to the reason of power circulation, these two kinds of planetary gear trains with high reduction ratios have low meshing efficiencies. The 2K type planetary gear reducer only contain two ring gears and one carrier, hence it will not have the problem of power circulation and will have better meshing efficiency than 3K type and 2K-2H type planetary gear reducers. Also, in general, the gear reducers with high reduction ratio are compound gear system. The purpose of this paper is to propose 2K type planetary simple gear reducers with high reduction ratios. Based on the concept of train value equation, the kinematic design of 2K type planetary gear trains with high reduction ratio are synthesized. Six 2K type planetary gear reducers are designed to illustrate the kinematic design process. Three of the examples are 2K type planetary gear reducers with simple planet gears. For the 2K type planetary simple gear reducer, there is a problem that is the simple planet gear engages to two ring gears with different tooth number. One example is used to illustrate how to design the two ring gears with different shift coefficient to engage the same planet gear. Based on the proposed process, all 2K type planetary simple gear reducers with high reduction ratios can be synthesized.
Profile Estimation of Linear Slide in the Presence of Straightness, Yawing and Rolling Motion Errors
Authors: Fung Eric Hoi Kwun , Zhang Xin Zheng , Zhu Ming , Wong Wai On
Published: September 2013

This paper presents a novel measurement system for the on-machine estimation of the profiles of a linear slide in the presence of three motion errors, i.e. straightness, yawing and rolling. The system consists of eight displacement sensors, a mounting stage and a data acquisition system. The Fourier Eight Sensor (F8S) method is employed for the error separation with software programs written in MATLAB codes. A prototype is designed, built and fitted to an axis of the precision slide. Experiments are performed to test the repeatability of the profile results under three different slide speeds. Results confirm that the proposed measurement system is capable of determining the profiles with good repeatability in the presence of straightness, yaw and roll errors of the slide.
Study of Real-Time Measurement for Thickness of Coating Film Based on Quartz Crystal Oscillator
Authors: Ma Xia , He Gao Fa , Ren Jian Bing
Published: September 2013

After the technologies of measurement for thin-film thickness were analyzed, the method of real-time measurement for coating thickness based on quartz crystal oscillation was proposed. The principle of the thickness measured by frequency shifting was analyzed on theory, the functional relationship between the resonant frequency shifting and the film thickness changing was deduced. Aim at the complicated working condition in coating machine, the structure of the measuring system for reducing the influence from external pressure and temperature was designed. The circuit for detecting the frequency shift was designed. Final, according to the experiment result, the resolution of thickness measurement can achieve sub-micrometer level.
Effects of Roughness Strip and Acoustic Sensor Height on Subsonic Boundary Layer by Experiment
Authors: Zong Ning , Yang Guang Jun , Sun Jing
Published: September 2013

According to the measurement requirements of acoustic fatigue load on aft fuselage structure and the external installation restriction of the acoustic sensor on aircraft surface, an acoustic sensor is installed on the silencing jet test plate with reference to body type of the real aircraft. A dynamic test and analysis system combined hot wire wind speed measurement and acoustic spectrum measurement is built up for the combined experiments with different acoustic sensor height and various boundary layer flow structure at subsonic flow condition. Turbulence development of different boundary layer is analyzed. The test result can be coordinated with the local measurement to aircraft flow structure so as to estimate the effect of acoustic sensor on the flow field.
Research of Method for Multi-Component Gas Monitoring Based on Non-Dispersive Infrared Technology
Authors: Qian Wei Kang , Mei Jun Hui , Qian Jian Qiu
Published: September 2013

The methods for Multi-component gas monitoring combination with multi-windows infrared sensor can be to detect and analyze conventional gas such as CO2 in the atmosphere based on the non-dispersive infrared (NDIR) detection technology, and can adapt to multi-task and multi-parameter measurement, convert the monitoring object to complete the different monitoring tasks at any time. First, the principle of the NDIR technology was described in this paper, and proposed a targeted circuit design and key technology solutions. The preliminary experimental analysis was shown that the test result is valid. NDIR infrared gas detection method as rapid and accurate gas analysis techniques can be generally used in the detection of continuous emission monitoring system as well as motor vehicle exhaust.
The Application of Self-Adaptive Wavelet Neural Network in Multi-Layered Structure Ultrasonic Testing of the Solid Rocket-Motor
Authors: Yin Xi Peng , Li You , Cheng Wei , Chen Chang
Published: September 2013

t is important to remove the noise signal effectively in non-destructive ultrasonic testing. Use the wavelet and neural network algorithm in multi-layered structure ultrasonic testing system of the solid rocket-motor, and construct self-adaptive wavelet neural network in the ultrasonic testing in order to restrain the noise. Better fitting signal is achieved by choosing Orthogonal Daubechies wavelet group and optimize the scale parameter by a searching algorithm. The simulation result shows that the wavelet neural network can make the testing system less distortion and better noise cancellation, and the method can be widely applied to ultrasonic detecting.
Design of a Wheel-Propeller Integrated Amphibious Robot and Hydrodynamic Analysis
Authors: Wu Zi Yue , Qi Jie , Zhang Shuai
Published: September 2013

To satisfy a range of performance requirements for the robot in aquatic and terrestrial environment, we propose the use of groups of amphibious robots as near-shore observatories or other application that can be rapidly deployed, recovered and redeployed in response to changing environmental conditions. In this paper, we introduce a novel amphibious robot prototype with wheel-propeller integrated driving devices, which can realize both crawling locomotion on the ground and swimming locomotion in the water without changing its driving devices. This paper describes the design of the overall robot structure, and the six driving devices of the robot are driven by two independent motors, thus the amphibious robot can conveniently switch its locomotion modes according to the external environments. Finally, the hydrodynamic performances of the amphibious robot are analyzed by using ANSYS CFD hydrodynamic calculation software, and the analysis will present a foundation for the design of amphibious robot.
Cuckoo Search Algorithm for Optimization Problems - A Literature Review
Authors: Mohamad Azizah , Zain Azlan Mohd , Bazin Nor Erne Nazira , Udin Amirmudin
Published: September 2013

Cuckoo Search (CS) is an optimization algorithm developed by Yang and Deb in 2009. This paper describes an overview of CS which is inspired by the life of a bird family, called Cuckoo as well as overview of CS applications in various categories for solving optimization problems. Special lifestyle of Cuckoo and their characteristics in egg laying and breeding has been the basic motivation for this optimization algorithm. The categories that reviewed are Engineering, Pattern Recognition, Software Testing & Data Generation, Networking, Job Scheduling and Data Fusion and Wireless Sensor Networks. From the reviewed CS mostly applied in engineering area for solving optimization problems. The objective of this paper is to provide overview and summarize the review of application of the CS.
A New Inexact Smoothing Method for SCLP
Authors: Chi Xiao Ni , Zhang Qing
Published: September 2013

In this paper, a new inexact smoothing method is presented for solving the symmetric conic linear programming (SCLP) in materials. Based on a regularized version of Chen-Harker-Kanzow-Smale smoothing function, our algorithm reformulates the SCLP as an equivalent nonlinear system of equations. At each iteration, Newtons method is adopted to solve the system approximately. Under suitable assumptions, the algorithm is proved to possess global convergence and local superlinear convergence.
The Research on Information Architecture and Security Protection of Smart Grid
Authors: Chen Lu , Liu Xing , Zhang Tao , Wang Yu Fei
Published: September 2013

Information and communication technology is one of the key issues of smart grid and the basis of its realization. To standardization of smart grid information architecture, this paper analyzes smart grid conceptual reference model, propose smart grid hierarchical information architecture, including grid equipment layer, communication gird layer, data storage layer and data application layer. For this information architecture, this paper finally discusses smart gird protection system.
Lean Information Management of Manual Assembly Processes: Creating IT-Based Information Systems for Assembly Staff Simultaneous to the Product Engineering Process
Authors: Lušić Mario , Hornfeck Rüdiger , Fischer Christian , Franke Jörg
Published: September 2013

T-based work instruction systems help to transfer the diversity of information for workers in an effective manner. In this way, the worker is supported in the comprehension of the task, which leads to such systems receiving increased recognition from manufacturing companies. However, the currently available worker information systems make no statement about how to involve their information processing early in the development process. Because to this, the basic idea of simultaneous engineering could be feasible and a partially automated, timely and cost-effective processing of assembly relevant information could occur. The approach of the development process-oriented, computer integrated documentation and visualisation process for assembly processes (CIV process) consider this problem field and add an innovative contribution.
Research on the Intelligent Management of Access Control System for Laboratory Center
Authors: Cui Qing Quan , Ning Jing , Yin Xun He
Published: September 2013

Access control system applied in laboratory center makes laboratory management more conveniently. The laboratory security can be guaranteed, even the efficiency of laboratory management and human resource arrangement are also improved. How to use the hardware and software resources of access control system sufficiently, and conduct intelligent management combined with experiment courses, which need deeper research and actual intelligent management. In the paper, take the Beijing Experimental Teaching Center-Experimental Teaching Center of Electrical and Intelligent Engineering on Building as example, the co-design of Access Control System and experiment courses arrangement is proposed according to the database technology, and the intelligent management process is analyzed and realized.
Study on Vibration Control of a Flexible Cantilever Beam Based on Fuzzy PID
Authors: Sheng Xian Jun , Zhong Sheng , Wang Ke Xin , Jiang Tao
Published: September 2013

The overall performance of large aerospace vehicles is determined to a great extent by the wings structure of aircrafts. In order to prevent wings vibration due to external interference, schemes of combined fuzzy-PID and fuzzy adapt PID controllers are proposed based on flexible beam structure. The MATLAB simulation model demonstrates that the proposed controllers not only has good dynamic characteristics, but also reduce the vibration effect greatly caused by external disturbance, which lay the foundation for the active vibration control of aircraft wings.
Improvement of Surface Roughness of Inner Hole for Grinding Machine Using Adaptive Fuzzy Sliding Mode Controller
Authors: Chang Ming Kun
Published: September 2013

In industry, grinding is commonly used as a finishing or semi-finishing operation. The surface roughness is a variable often used to describe the quality of the overall grinding system. However, the traverse and longitudinal waviness are produced by the random nature of the grinding process and by machine vibration in surface. This paper presents an adaptive fuzzy sliding mode control (AFSMC) to improve surface roughness in inner hole machining using diamond grinding bar. The experimental results show that the AFSMC can reduce surface roughness (Ra).
Dynamic Analysis and Control of a Quadrocopter
Authors: Selim Erman , Uyar Erol , Alcı Musa
Published: September 2013

Quadrocopter is an aerial vehicle platform which has become very popular among researchers in the recent past due to the advantages it offers over conventional helicopters. Quadrocopter is very simple structure, but it is inherently unstable from aerodynamics point of view. The first step before the control stage is presenting the adequate modeling of the system dynamic. This paper presents the dynamic model of quadrocopter as regarding to Newtons Laws with kinematic equations. Presented model is simulated with Matlab-Simulink for testing translational and rotational situations. And it is figured out that; presented model is acting like a real quadrocopter. Finally a PID controller designed for stabilize the altitude of modeled quadrocopter.
Incorporating Podcast in Elementary School Reading Instruction
Authors: Liao Chin Wen , Chen Chih Hao , Tai David Wen Shung
Published: September 2013

Because of the insufficient teaching hours and the limited time for practice reading in a classroom, using internet can eliminate the restriction of when and where to teach. Through the publishing and broadcasting functions of the new online broadcasting media, podcast, teachers and students can post and share their reading experiences, which can supplement the insufficient reading instruction in a classroom. The objective of this study is to examine the effect of applying podcast, the educational broadcasting media, to reading instruction. From the students checkout records and the results of the survey, the conclusions derived are: 1. Incorporating podcasting in reading instruction has a positive impact on students reading behaviors. 2. Incorporating podcasting in reading instruction sparks students curiosity and motivates them to learn. 3. Student checked out at libraries more often. 4. Incorporating podcasting in reading makes students love reading.
The Design of 5.25 GHz Low Noise Amplifier
Authors: Wei Qian , Liu Jing Ping , Wang Lu , Zhao Hui Chang
Published: September 2013

This paper has designed a 5.25 GHz low noise amplifier. We used a low noise field effect tube (ATF36077) to design two slopes of low noise amplifier which improved the gain, and used a cross junction structure to make the input matching circuit. Besides, the amplifier enhanced the stability of the circuit through adding the microstrip in the source of 36077 as a negative feedback. The measurement results show in the 4.9 GHz to 5.3 GHz frequency band, low noise amplifier gain is 21 dB, less noise factor is less than 2 dB, and bandwidth is about 400MHz.
Brep Model, VOXEL Model, and its Inner Attributes
Authors: Gao Xin Rui
Published: September 2013

By using dexelization algorithms, a Brep model is transformed to the three direction DEXEL model and VOXEL model. In the VOXEL model, every VOXEL could have its attributes such as color, or transparence. The attributes of the VOXEL model could be set and the inner attributes of a 3D model could be expressed. The VOXEL model and its inner attributes setting are very important for the design of complex models with complex inner attributes. Under Java2.0 and Java 3D, these algorithms were tested and some design examples were given.
Research of Efficiency of Computer 3D Animation
Authors: Gao Xin Rui
Published: September 2013

3D animation is an application of computer graphics. The factors that affect the efficiency of 3D animation include animation algorithms, 3D models, materials and textures, rendering, and LOD (level of detail). This thesis discusses these technologies separately. By using these technologies properly, we could reduce the complexity of algorithms and the overall data quantity and then enhance the efficiency of 3D animation.
Cognition in a Cognitive Routing System for Mobile Ad-Hoc Network through Leaning Automata and Neural Network
Authors: Afridi Muhammad Ishaq
Published: September 2013

A cognitive routing system intelligently selects one protocol at a time for specific routing conditions and environment in MANET. Cognition or self-learning can be achieved in a cognitive routing system for mobile ad-hoc network (MANET) through a learning system like learning automata or neural networks. This article covers the application of learning automata and neural network to achieve cognition in MANET routing system. Mobile Ad-hoc networks are dynamic in nature and lack any fixed infrastructure, so the implementation of cognition enhances the performance of overall routing system in these networks. In learning automata the process of learning is different from reasoning or decision making. Learning automata require little knowledge to take decisions. Neural network can be improved by increasing the number of neurons and changing parameters. Self-training enhance neural network performance and it select suitable protocol for a given network environment.
Cognition in MANET is either based upon learning automata as in some wireless sensor networks or specialized cognitive neural networks like Elman network. Learning automata do not follow predetermine rules and has the ability to learn and evolve. The interaction of learning automata with the MANET environment results in the evolution of cognition system.
Research on the Creation of Small-Scale English-Chinese Parallel Corpus for Manufacturing Systems
Authors: Bao Song Bin
Published: September 2013

English, which is specially used in the field of manufacturing systems, belongs to ESP (English for specific purposes). In order to improve the effect of ESP education in China, it is very necessary to create an English-Chinese parallel corpus for aiding ESP teaching and learning. In this paper, a novel method is presented to create a small-scale English-Chinese parallel corpus by means of TMS (translation memory system). Firstly, the suitable English and Chinese texts are collected from network, publication and human translation; secondly, The English and Chinese texts are aligned and formatted by using the related TMS functions; then Chinese texts are split into words by using ICWSS (Intelligent Chinese Word Segmentation System); finally, the English-Chinese corpus is stored in cloud database. This small-scale English-Chinese parallel corpus can be searched through ParaConc and meet the basic needs of ESP teaching and learning. Since the method does not need to design new algorithm nor develop new software system, the construction of the corpus is much easier and more flexible compared to general large-scale corpus.
Composite Waveform Design of Phase Coding and Linear FM for MIMO Radar
Authors: Xu Hang Rong , Liu Song , Liu Jing Ping , Zhao Hui Chang
Published: September 2013

A new method is proposed to design composite waveform for MIMO radar based on phase coding and linear FM. Compared with the traditional MIMO phase coding signal, the new method has some merits such as the wide bandwidth and being realized in practice. The optimizational cost function is formulated, and simulation experiments verify the correctness of theory analysis and validity of optimizational method.
Optimized Analysis of the Hollow Floor Based on the Niche Genetic Algorithms
Authors: Huang Chuan Teng , Wang Zhi Jun
Published: September 2013

Nowadays, the hollow floor is widely used due to its excellent mechanical property and economic benefit.However, its related specification is absence of evaluation in geometric parameters. The optimized analysis aimed at the hollow floor under vertical load, the total cost of the hollow floor is considered as a objective function, the maximum deflection and the threshold value of the geometric parameters are considered as constrain conditions. The program, which introduces the section design and compiled by the python script, based on the niche genetic algorithms is used to analyze the optimization of a hollow floor. Comparing to the global optimal solution, the program achieves good results. It indicates that the niche genetic algorithms is efficient and suited for the optimization analysis of hollow floor. The above mentioned conclusions will be conducive to engineering design and further research in this field.
A Study on the Air Flow Characteristic of Apartments According to Layout Form
Authors: You Jang Youl , You Ki Pyo , Kim Young Moon
Published: September 2013

In urban downtown, densely cluster building either as a large number of middle, low and high-rise, may experience various types of damage occurring around the buildings because of wind. Newly constructed apartment complexes fall to the risk of strong winds at the corners of apartment buildings or gusts on the pedestrian passages. Research is on pedestrians safety in connection to wind flow inside and outside apartment complexes constructed in downtown areas. This study selected 3 types of apartment complexes and compared the wind velocity ratio among different spots in the complexes through wind tunnel experiment and CFD analysis. Furthermore, we changed the deployment and outward form of apartment complexes through CFD analysis and examined the wind-velocity ratio reduction effect. According to the results of wind tunnel experiment, wind velocity between two buildings decreased usually, but wind velocity increased in the space between the sides of two buildings and the space between front and back apartment buildings. Again, when comparing the results of wind tunnel experiment with the results of CFD analysis, they showed similar tendencies except for wake areas. Etc.
LQR Control of Along-Wind Response of a Tall Building
Authors: Kim Young Moon , You Ki Pyo , You Jang Youl , Paek Sun Young , Nam Byung Hee
Published: September 2013

Modern tall buildings using high strength and lighter construction materials are more flexible so could be excessive wind-induced vibrations resulting in occupant discomfort and structural unsafety. Recently, many studies have been advanced in using actuator force as an active control force based on the linear quadratic optimum control theory .It needs to predict the wind-induced response and the optimum control force to reduce the excessive wind-induced vibration. It takes a lot of time and cost to do wind tunnel test needed it, so numerical simulation approach instead of that is recommended sometimes. Simulating wind load in the time domain using known spectra data of fluctuating wind load is particularly useful for some prediction of windinduced vibration which is more or less narrow banded process such as a along-wind response of a tall building. In this study, fluctuating along-wind load acting on a tall building treated as a stationary Gaussian white noise process was simulated numerically in the time domain using the along-wind load spectra proposed by G.Solari in1992. And using this simulated along-wind load estimated the reduced along-wind vibration response of a tall building which has an active tuned mass damper (ATMD) installed based on the linear quadratic regulator (LQR) control method.
Proportional Control of Dissolved Oxygen Concentration of Sewage Water Treatment in Oil Field
Authors: Xie Chao
Published: September 2013

Activated sludge method is mainly used to sewage water treatment of water injection system in oil field, dissolved oxygen of sewage pond plays a important role in the sewage water treatment process. The proportional control algorithm of dissolved oxygen concentration is developed based on a first time delay model, and the parameter values of the controller is determined by using stability margins design approach. Simulation results are provided to illustrate the design procedure and the effectiveness of the proposed methods. When applying to the wastewater treatment system based on activated sludge, this method can achieve a satisfied treating performance with robustness. Simulation results are given to demonstrate the design procedure and the effectiveness of the proposed methods.
Research on Network Characteristics for Urban Water Supply Pipe Network Based on GIS
Authors: Wang Dong Mei , Li Dan , Ding Li
Published: September 2013

Using GIS to analysis urban water supply pipeline network characteristic, it can make full use of GIS spatial data management and graphics processing advantages. This paper is on the basis of clarified the importance of the dynamic characteristics, it include three aspects of research. First, topological graph modeling, establishes the section between the nodes and directed graph, and uses adjacency list to store; Second, spatial database structure, it designed by the topography and galleries, some data sets, the line data set, the surface data and document data sets of pipe network GIS spatial data structure; Third, nodal flow dynamic characteristics, analysis of node flow of small changes ,which can lead to node pressure and the change in the flow section, and build the mathematical model. In this paper, the research contents to ensure the security of urban water supply, improve the level of urban management information, improve emergency management capability of urban is of great significance.
CFD Simulations to Predict Comfort Level of Outdoor Wind Environment for Taipei Flora Exposition
Authors: Yang An Shik , Chang Chao Jui , Juan Yu Hsuan , Su Ying Ming
Published: September 2013

The goal of this investigation is to conduct the CFD analysis in conjunction with the wind comfort level standard to predict the pedestrian wind comfort level around the Dreams, Angel Life and Future pavilions in the Xinsheng Park of the Taipei International Flora Exposition. The computerized airflow simulations were carried out to predict the detailed flowfield for determining the comfort level of outdoor wind environment for three pavilions in the Xinsheng Park. In order to generate the suitable environments of natural ventilation for visitors, the calculated results can be used to appraise the sufficiency of natural ventilation for the open space around the building cluster.
Establishing Mine Water Supply Network Physical Model Based on the Abnormal Similar Theory
Authors: Jiang Zhong An , Shi Lei Lei , Wang Pei
Published: September 2013

It’s necessary to establish a perfect dust water supply system according to Coal mine safety regulations. In order to do researches on the reliability of mine dust water supply network, this paper deduces the similarity number of flow rate and pressure under the condition of abnormal similarity, and establish the physical model of mine water supply network according to the gravity similarity criterion at first in lin-nan mine as the background. Monitor the running status of the whole network, measure the flow rate and pressure of the monitoring stations, and then contrast the experiment result and EPANETH simulation result with the data of the original network. The results show that physical model meets gravity similarity under the condition of abnormal similarity, which provides the experimental basis for the follow-up research on mine water supply network.
Research on Process Management Innovation of Petroleum Drilling Engineering Project Based on Life-Cycle in China
Authors: Jian Zhang , Kun Huang
Published: September 2013

Since the beginning of the 1980s, project management has been gradually implemented within China's petroleum drilling engineering. Recently, achievements have been made in the institutionalization, routinization and standardization of project management in petroleum industry. The sustainable development of petroleum enterprises has been ensured by process management, which based on the entire life-cycle of drilling project.
In this paper, the life-cycle of large-scale petroleum engineering project has been analyzed. And relations between project life-cycle and project management process have been elaborated. Furthermore, the process management based on the entire life-cycle of drilling project has been established. The author believes that process management would be beneficial to the overall efficiency of oil and gas exploration and development.
Analysis on the Effect Factors of the Passenger Transportation Energy Consumption Intensity
Authors: Wu Xu , Lang Shuang , Guo Xiao Qing
Published: September 2013

This article proposes using passenger transportation energy intensity to measure the energy utility efficiency and energy-saving potential of the passenger transportation, uses the complete decomposition model to decompose the passenger transportation energy intensity from 1990 to 2007, and then investigate how various factors impact passenger transportation energy intensity. As is shown in the results, transportation structure increases passenger transportation energy intensity, while energy efficiency decreases it, however the decline is limited. Thus energy saving caused by adjustment of transportation structure is much more considerable.
Effectiveness of 1-Methylcyclopropene Treatment on Kiwifruit for Extending Storage Life
Authors: Ding Yu Long , Shen Ling Min , Li Xi Hong , Yang Xiang Zheng , Liu Dan Zhou
Published: September 2013

Effects of different dose of 1-methylcyclopropene (1-MCP) treated of fresh kiwifruit on quality were investigated and the physiochemical attributes were subsequently evaluated during 90 days storage at 0 °C. Results showed that 1-MCP treatment had a high effect on inhibiting the respiratory rate, retarding firmness descending and total soluble solid decrease and maintaining titratable acid content during the end of the storage compared with the non-treated control. Moreover, 0.5 μL.L-11-MCP showed the best effect on maintaining the quality and extending storage life.
Assessment on Industrial Land-Use Fitness in a Resource Based Town
Authors: Zhao Xiao Fan , Han Yu
Published: September 2013

Suitability of industrial land use in Nanfen District of Benxi City, a famous industrial-mining town in China, was evaluated in terms of niche fitness model. Results indicated the most suitable, sub suitable, barely suitable and unsuitable area for industrial land use in Nanfen was 91.23 km2, 182.72 km2, 182.08 km2 and 162.97 km2, respectively. Spatially, the most suitable and sub suitable areas were mainly distributed in urban area, and barely suitable areas were chiefly located in Xiamatang town, however, unsuitable areas were mostly scattered in Sishanling town. Industrial activity should be arranged in the most suitable area, so as to match actual resource niche and minimize environmental pollution and ecological damage.
The Research on Preparation Methods of Sludge-Based Adsorbent and its Application in Water Treatment
Authors: Huang Kun , Du Bing Xin
Published: September 2013

The accelerated process of urbanization and industrialization leads to the increase of sewage sludge production. The reuse of excess sludge which meets the idea of sustainable development is aimed to develop it into resources. Preparation of sludge-based adsorbents with various functions provides a new way for sludge utilization as a resource in China. The preparation method of sludge-based adsorbents and its application in wastewater and waste gas treatment are introduced. Suggestions about the research direction of sludge-based adsorbents in the future are point out.
The Influence from Water Supply System to the Overall Layout of the Residential Building in Village
Authors: Chen Hao , Zhang Juan , Cai Shou Jun , Wang Dong
Published: September 2013

Water is a basic resource for the development of human civilization, its the lifeblood of agriculture and the whole economic development. With the development of economy, the improvement of production and living needs, all aspects of water resources is more strict requirements are put forward. In this paper, we will discuss the aspects of the construction of water supply system to discuss effects on rural residential construction layout.
The Study of Activity of Rare-Earth Doped Four Potassium Titanate Whiskers Composite Photocatalyst
Authors: Wei Mao Bin , Wang Dan Dan , Lu Zi Yang , Huo Peng Wei , Yan Yong Sheng
Published: September 2013

In this paper, the high temperature was adopted to treat the composited photocatalysts. The effects of different heat treatment temperature, rare-earth and concentration rare-earth on photocatalytic activity were investigated. The results showed that the photocatalytic activity was better when potassium titanate whiskers were calcinated at 600 0C without rare-earth doping. The effect of potassium titanate whiskers doped neodymium ion was the best, the degradation rate could increase to 59.0%. When neodymium nitrate was 0.04g, the degradation rate of composites photocatalysts was the best. The photodegradation rate could reach 74.02%. And the degradation rate of 10 mg/L tetracycline at 20 0C could increase to 86.31%.
FDTD Method for Retrieving the Nonlinear-Index Coefficient Based on Self-Phase Modulation
Authors: Liu Qing Wei , Song Dong Mo
Published: September 2013

In this paper we have retrieved the nonlinear-index coefficient based on the self-phase modulation which is resulted from a high-power laser pulses propagating in a third-order nonlinear optical material. Using the finite-difference time-domain method, the spectrum analyses have been performed with the optical pulses with different peak-powers propagating through the nonlinear optical materials with different lengths. The nonlinear-index coefficients were obtained by using the numbers of the spectrum peaks, and how to improve the accuracy has been discussed.
The Design of Self-Service Intelligent Stereo Garage
Authors: Qi Qiang , Jiang Bao Hua , Li Yuan Zong
Published: September 2013

The garage body is designed with steel structure, the mechanical part comprises a frame, a transmission track vehicle guide system, the external tooth slewing ring and elevator The control unit using PLC, sensor and the host computer, control the whole process of vehicle access.
A Study on the Theory and Performance Simulation of the Hydraulic Electromagnetic Energy-Regenerative Shock Absorber
Authors: Zi Xiao Lin , Guo Si Jing , Guo Xue Xun , Pan Jing
Published: September 2013

Hydraulic electromagnetic energy-regenerative shock absorber (HESA) is a new type of shock absorber which can regenerate a portion of energy dissipated as thermal energy in conventional shock absorber. This paper briefly describes HESAs working principle, uses AMESim, a hydraulic simulation software, to get damping characteristic of HESA as well as conventional passive shock absorber by doing some simulation tests, and contrasts the two consequents. Simulation results show that HESA has its unique damping characteristic, and its regenerative characteristic performs well.
Design and Study on a Vertical Comprehensive Experimental Platform for Function between Disc Cutter and Rock
Authors: Feng Huan Huan , Chen Kui , Zhou Jian Jun , Li Feng Yuan , Wang Zhu Feng
Published: September 2013

For better research on rock breaking mechanism of shield disc cutter, a kind of vertical experimental platform was designed after the characteristic analysis of existing linear cutting rig, using rock box turning to realize the rotary simulated motion of shield disc cutter. Compared with the linear device, this experiment platform overcomes the lack of real simulation of shield disc cutter movement condition. The design of comprehensive experimental platform was described particularly from the three aspects of electronic control system, hydraulic system and an adjusting device for cutter space. On the produced platform, which is the first one in China, the experiments of rolling experiment under three cutters sequential indentation were performed. The experimental data and analysis result were basically consistent with engineering data and simulation result based on RFPA. The correctness of design scheme, advancement and scientificalness of experiment platform were confirmed, with the hoping of providing dependable platform for the research on rock breaking mechanism of shield disc cutter.
Analysis on Structure and the Key Techniques of Distributed Virtual Reality Flying Training System
Authors: Xiong Zhuang , Zhou Hua Wen , Fang Xing
Published: September 2013

The virtual reality is a dynamic 3D environment of a emulated world produced by the computers, which can make the operators feel being personally on the scene. People can obtain perceptions they want and experience the detail things in virtual world by operating these hardwares such as joy sticks, safety goggles, the mouse action, earphone and so on. In this paper, the distributed virtual reality system was introduced and we analyzed how to establish this system.
Main Methods and Application Areas of Multiplexing Technology in Network Communication
Authors: Ren De Qi
Published: September 2013

With the fast development of science,all kinds of new and high science and technology are corresponding applied to the people's daily life, and it has been accepted and applied to all aspects by them. The emergence of the computer is a typical example, it plays a good role in promoting the development of science and technology, and the connection between the computer will rely on the network communication. In this paper, the main methods and applications of multiplexing technology in network communication have been analyzed and discussed.
De-Noising Using Wavelet Packet for Ultrasonic Testing Signal of Small Diameter Steel Pipe with Thick Wall
Authors: Wei Yong Qiao , Hou Li , Jia Feng Lan , Wang Shao Jiang , Xiao Hua Jun
Published: September 2013

In the ultrasonic detection of small-diameter steel pipe with thick wall, the quality of ultrasonic echo signals is the foundation for the pipeline flaw identification and feature extraction. In this paper,a de-noising method of wavelet packet based on threshold is proposed for the limitation of soft and hard thresholds. The ultrasonic wave pipeline detection signal contaminated by noise is de-noised by this method. Moreover, the contrastive analysis is performed among the wavelet packet transform based on adjusted threshold, original ultrasonic echo signal and the wavelet packet transform based on default threshold. Experiment results show that the noise reduction effect of the wavelet packet based on the adjusted threshold is obvious and the SNR of signals is also improved.
Microblog Social Network Analysis Based on Network Group Behavior
Authors: Wang Lin , Zhao Yang , Liang She Hong , Shi Kan
Published: September 2013

This paper has searched the six key influential network group incidents in 2011 in China through SINA Microblog platform, screen the most active Microblog users who pay close attention to the incidents, their Microblog followers are above 50,000 , finally collects 30 Microblog user information by the way of snowballing, form 30*30 “follow – be followed ” Microblog netizens relationship matrix. Specific to this asymmetric matrix, the authors use UCINET social network analysis software and visual software NETDRAW, analyze Microblog network structure, network centrality based on network group incidents, and comprehensively describe the laws to release and acquire group incidents under the mixed network environment of Microblog, combined with the massive Microblog exchange data, to analyze the non-rational behavior of the netizens, so as to provide a scientific basis for setting out the appropriate guiding strategy and interventions.
Hydrodenitrogenation of Basic and Non-Basic Nitrogen Compounds in Shale Oil over NiW/Al2O3 Catalyst
Authors: Tang Xun , Li Shu Yuan , Yue Chang Tao , He Ji Lai , Hou Ji Li
Published: September 2013

The hydrodenitrogenation (HDN) of Longkou shale oil were carried out in microscale trick-bed reactor over a commercial NiW/Al2O3 catalyst with high HDN activity. The effects of temperature, pressure, liquid hourly space velocity (LHSV) and hydrogen/oil ratio on the conversions of total, basic and non-basic nitrogen compounds were investigated at various conditions (340-420°C, 0.2-2h-1, 4-9MPa and 400-1000 L/L). The results show that basic nitrogen compounds have higher HDN reactivity than non-basic nitrogen. The distributions and species of nitrogen compounds in Longkou shale oil were also investigated. About 33% of total nitrogen is present in big molecules with high boiling point. The nitrogen compounds in Longkou shale oil are mainly composed by seven kinds of components ( nitriles, anilines, pyridines, quinolines, acridines, carbazoles and indoles).
Backstepping Control Method for the Trajectory Tracking for the Underactuated Autonomous Underwater Vehicle
Authors: Wan Lei , Sun Nan , Liao Yu Lei
Published: September 2013

The underactuated autonomous underwater vehicles (AUV) have the characteristics of strong nonlinearity and model uncertainty. A method of backstepping path following control was raised for the trajectory tracking control problem of the AUV under Serret-Frenet frame. It transformed the original underactuated system into an actuated nonlinear system based on simplified analysis. A backstepping trajectory tracking controller was proposed based on backstepping method. By means of Lyapunov stability theory, it was proven that the proposed controller can guarantee the path following control system globally asymptotically stable. Simulation experiments show that the control system has good adaptability and robustness in case of parameter uncertainties and external disturbances to avoid shaking of performance.
Design and Application of Virtual Parking Management Platform Based on LabVIEW
Authors: Tian Yuan Yuan , Xu Xin
Published: September 2013

Intelligent parking management development platform based on LabVIEW imitates parking access control system, smart regional guidance system, parking information inquiry system and alarm information inquiry system. The system achieves kinds of functions, such as fast access, time charges, intelligent guidance, security alarm and so on. The development platform for intelligent parking management system can be applied to develop new features for the system. The platform simulates that the parking system combines the Internet of Things technology using the LabVIEW database connectivity tools package. It can develop new functions including urban parking guidance and smart reverse seeking cars in adapt to smart city development.
Research on a Positioning Application by RTK Technique and with goGPS
Authors: Xu Jun Wen , He Guo Wen
Published: September 2013

This paper describes research in the use of goGPS to develop positioning applications.. This paper introduces the structure of goGPS library and describes the implementation of algorithms in our library. goGPS is an open source software that can achieve accuracies of less than 1 m, depending on sky visibility conditions, using low-cost GPS instrumentation (specifically, u-blox Evaluation Kits AEK-4T and EVK-5T are usually employed for tests). goGPS has the potential to reduce costs greatly since there are no limitation in development and distribution.
On-Line Monitoring of Air Cooler in Transformer by Using Fiber Bragg Grating Temperature Sensors
Authors: Xue Jun Hua , Yang Zhao , Wang Lan Yun , Wang Min Ji , Zhao Cheng Jun , Yan Sian , Li Ying Na , Zhao Zhen Gang , Xie Tao , Li Chuan
Published: September 2013

The air cooler reduce the working temperature of the transformer, high temperature will reduce the transformers life, and even make insulation overheating, aging, then the transformer will be damaged. The air cooler which is forced oil circulation in transformer outdoor in substation has been monitored. The real-time monitoring of 24-hours indicates that the temperature changes in the range of 3°C. The ambient temperature is lower than the temperature of fan about 1°C. At the long-term of 479 days, the average daily temperature range of fan is 35.32°C, the maximum temperature is 50.25°C on August 18,2011, and the maximum temperature is 14.93°C on January 17, 2011. The daily average of ambient temperature range is 37.59°C, the maximum temperature is 51.16°C on August 17, 2011,and the minimum temperature is 13.57°C on January 17, 2011. The maximum difference between the temperature of fan and the ambient temperature is 12.48°C on September 15, 2011. According to the relevant standards and monitoring results, the maximum threshold of fan temperature is defined to 80°C, and the threshold of temperature rise is 20°C.