bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on the Space Meshing Tooth Profile of Giant Magnetostrictive Harmonic Motor
Authors: Zhu Lin Jian , Su Zeng Rong , Zou Zhen , Li Jian Feng
Published: September 2013

A methodology to calculate the meshing tooth of giant magnetostrictive harmonic motor is proposed in this paper. The deformation curve of the flex spline of the giant magnetostrictive harmonic motor was investigated with Fourier function. A kinematic model of harmonic drive was established when the involute profile is selected as the flexible gear tooth shape and the circular spline is obtained following the envelope theory, thereby generating the kinematic simulation as well as the trajectory of the circular spline teeth with respect to the flex spline. Finally, the relationship between the cone angle of flex spline and the engagement profile is discussed; together with an improvement strategy-equal width shrinkage of circular spline.
A Novel Method for On-Machine Determination of Slide Motion Errors Considering Thermal Effects
Authors: Fung Eric Hoi Kwun , Hou Neng Jie , Zhu Ming , Wong Wai On
Published: September 2013

This paper proposes a novel method to on-machine determine the three error components of a precision linear slide: the straightness motion, the yaw and the roll under the effect of thermal distortion caused by friction and drive. The Integrated Sensing System (ISS) is then introduced for implementing this novel method on an illustrative model of a linear slide. The error separation algorithm used in the system is based on the Fourier Eight Sensor (F8S) method. The theory and procedures are presented, and computer results are analyzed. The effectiveness of the novel method is validated through computer simulations.
Physical and Mechanical Properties of Fired Clay Bricks Incorporated with Cigarette Butts: Comparison between Slow and Fast Heating Rates
Authors: binti Abdul Kadir Aeslina , Mohajerani Abbas
Published: September 2013

In general, firing process in brick manufacturing could affect the properties, colours and appearance of the brick. The main purpose of this study was to evaluate the effect of different heating rates on physical and mechanical properties during the firing of standard bricks and bricks incorporated with cigarette butt (CB). In this investigation, two different heating rates were used: slow heating rate (2oC min-1) and fast heating rate (5oC min-1). Samples were fired in solid forms from room temperature to 1050oC. All bricks were tested for their physical and mechanical properties including compressive strength, initial rate of absorption and density. Higher heating rates decrease compressive strength value but slightly increase the initial rate of absorption and density properties respectively. In conclusion, higher heating rates are able to produce adequate physical and mechanical properties especially for CB Brick.
Non-Metal Reinforced Lead-Free Composite Solder Fabrication Methods and its Reinforcing Effects to the Suppression of Intermetallic Formation: Short Review
Authors: Mohd Salleh Mohd Arif Anuar , Nogita Kazuhiro , Mcdonald Stuart
Published: September 2013

To increase the solder joint robustness, researches and studies on composite solder carried out by many researchers in an effort to develop viable lead-free solders which can replace the conventional lead-based solders.This paper reviews the fabrication processes of the lead-free composite solder and its non-metal reinforcing effects to the suppression of intermetallic formation. Most researchers using different solder fabrication methods have found that byadditions of non-metal reinforcement from micron up to nanoparticle size had suppressed the intermetallic compound formations of lead-free composite solders.
Research Progress of Paper-Based Microfluidic Devices
Authors: Cheng Yong Qiang , Guo Cui Lian , Li Yang , Zhao Bin , Cui Xiao
Published: September 2013

Paper-based microfluidic devices have recently received increasing attention as a potential platform for its low cost, portability and excellent compatibility with biological samples. A variety of fabrication technologies were employed, including simple photolithography, wax plotting, printing, inkjet etching, plasma etching and so on. Meanwhile, the potential applications of paper-based microfluidic devices in diagnostic, point-of-care (POC), and environmental monitoring were reported. We review the recent progress of fabrication technologies and the applications of paper-based microfluidic devices.
Strength of Concrete with Ceramic Waste and Quarry Dust as Aggregates
Authors: Al Bakri A.M. Mustafa , Norazian M.N. , Mohamed M. , Kamarudin H. , Ruzaidi C.M. , Liyana J.
Published: September 2013

This research focuses on a study of the strength of concrete with ceramic waste as coarse aggregate and quarry dust as fine aggregate. The sources of ceramic waste and quarry dust are obtained from the industrial in Malaysia. Presently, in ceramics industries the production goes as waste, which is not under going the recycle process yet. In this study an attempt has been made to find the suitability of the ceramic industrial wastes and quarry dust as a possible replacement for conventional crushed stone coarse and fine aggregate. Experiment were carried out to determine the strength of concrete with ceramic waste coarse aggregate and quarry dust fine aggregate to compare them with the conventional concrete made (with crushed stone coarse aggregate). From the results show that compressive strength of concrete with quarry dust as aggregates is the highest with 30.82 MPa with density 2251.85 kg/m3. This show, ceramic waste and quarry dust can be alternative aggregate for comparable properties.
Oxidation Behavior of Steel and Pure Copper at 500-700°C
Authors: Ha Sang An , Wang Jei Pil
Published: September 2013

The oxidation behavior of steel and pure copper has been investigated in the temperature range of 500-700°C at various oxygen pressures. The rate of oxidation was measured using thermal gravimetric apparatus (TGA). The morphology, composition and structure of the oxide scale were determined by scanning electron microscopy (SEM) and X-ray diffraction (XRD).
Case Study of Online Safety Assessment on Atmospheric and Vacuum Catalysis of Distillation System and Pressure Vessel of Diesel Hydrogen Device Based on RBI Technology
Authors: Li Wen Wei , He Cheng Dai , Du Qing
Published: September 2013

The atmosphere&vacuum-catalytic cracking integrated unit of a petrochemical enterprise in Hangzhou can not be tested for continuously producing 35 sets of pressure vessels. This thesis assesses the three main parameters (probability of failure, failure result and risk of failure probability and result) of the system through FBI technology, analyzes the potential failure mode and probability in this system and confirms the risk of failure via calculating failure result. This thesis shows the testing strategy suitable for this device based on failure mode, failure probability and result and puts forward scientific and proper testing cycle based on risk level of equipment to ensure the depth and rationality of overdue testing work and improve the reliability of safe and stable operation of device for the system before the next maintenance cycle.
Generation of Geometric Measurement Collision-Free Path for Curved Part
Authors: Wang Fu Ji , Jia Zhen Yuan , Li Ming Xing , Ma Jian Wei , Ding Lei
Published: September 2013

Collision between the contact probe and the measuring part will occur easily when conducting geometric measurement of the curved parts with complex surface shape. To solve the security problem of geometric measurement, a generation method of collision-free measurement path was proposed. First, collision check was simplified into the calculation of line-surface intersection. Meanwhile, we used bounding box method and triangulation method as auxiliary tools. Then, when dealing with collision avoidance, we utilized bounding box in parametric directions to avoid collisions caused by neighboring surfaces. In addition, we used parameter extreme points to avoid collisions caused by the measuring surface itself. At last, path simulation of a complex curved part verifies the security of the path generated by means of the method proposed in this paper.
Study on the Frequency Bands Applied in Grains' Moisture Measurement
Authors: Wang Hong Wei , Li Qi Jun , Wang Zhan Hou
Published: September 2013

As a research hotspot, microwave technology is employed to measure grains moisture. Microwave devices based on various frequency bands appear in some measurement systems. These applications have no a theoretical foundation. This paper provides the principle of microwave technology used in moisture measurement. The factors, detection depth, horizontal and vertical resolutions, which are crucial to select the working frequency, are expounded. This paper also sets forth current application frequencies in moisture measurement systems. At the end, an advisable experiment framework is built to help select the frequency band preliminary for the moisture measurement.
Online Measurement for the Thermal Geometric Parameters of Hot Large Forgings
Authors: Liu Wei , Jia Zhen Yuan , Li Ming Xing , Liu Yang , Zhang Yang
Published: September 2013

t is difficult to obtain high measurement accuracy in online detecting the thermal geometric parameters of hot large forgings, based on machine vision method. In this paper, firstly, a spectrum selective image acquisition method for high-temperature components is proposed, which can successfully reduced the effect of high temperature on image quality. Then, a measurement method based on the coding feature lines for geometric parameters of hot large forgings is employed, which can effectively improve the extraction efficiency of geometry characteristic information of high-temperature components. Experiments on the forging workshop show that measurement accuracy of diameters for cylindrical forging reaches 0.2% and the measurement time is 2.25 seconds; measurement accuracy of lengths for cuboid forging reaches 0.48% and the measurement time is 5.9 seconds. The experimental results have verified the feasibility and high efficiency of the proposed method for measuring the geometric parameters of hot large forgings.
Design Fabrication and Experimental Studies of ACFM Testing Instrument
Authors: Ren Shang Kun , Fan Wei , Li Bing
Published: September 2013

The Alternating Current Field Measurement (ACFM) technique is an electromagnetic inspection method for surface crack detection and sizing. According to signal characteristics of ACFM, a detecting instrument has been designed and fabricated successfully. The ACFM inspection system is composed of signal conditioning circuit and testing system based on DSP and LABVIEW. The functions of generating exciting signal, collecting data, processing data and sending data are realized through DSP, while the functions of displaying data, storing data and calculating are achieved through the LABVIEW software. The function and performance of the instrument has been tested by experiments. It can calculate the length and depth of the crack and can facilitate the quantitative evaluation of crack as well. Its detection accuracy and performance can completely meet the requirement of practical test.
Firefly Algorithm for Optimization Problem
Authors: Johari Nur Farahlina , Zain Azlan Mohd , Noorfa Mustaffa H. , Udin Amirmudin
Published: September 2013

This paper reviews the applications of Firefly Algorithm (FA) in various domain of optimization problem. Optimization is a process of determining the best solution to make something as functional and effective as possible by minimizing or maximizing the parameters involved in the problems. Several categories of optimization problem such as discrete, chaotic, multi-objective and many more are addressed by inspiring the behavior of fireflies as mentioned in the literatures. Literatures found that FA was mostly applied by researchers to solve the optimization problems in Computer Science and Engineering domain. Some of them are enhanced or hybridized with other techniques to discover better performance. In addition, literatures found that most of the cases that used FA technique have outperformed compare to other metaheuristic algorithms.
Research on the Indoor Location Algorithm Based on RFID
Authors: Zhang Yi , Hou Qi Shan , Luo Yuan
Published: September 2013

An improved localization algorithm was proposed to solve the problem of low location accuracy and large computational cost in nearest neighbor (KNN) algorithm for LANDMARC system. The novel algorithm combined RFID and wireless sensor networks. It divided location area into several sub areas, utilized the sensor network to locate the target node to corresponding sub area, removed the reference nodes far from the target node, narrowed down the selection scope of the k value, used KNN algorithm to calculate the coordinate of target node in the sub area and applied the Taylor series iteration to improve the accuracy. Experiment results shows that the proposed algorithm improves the location accuracy evidently.
Research of Higher Vocational College Scientific Management System Based on Workflow
Authors: Tang Jun , Hu Zhi Min
Published: September 2013

The research management system in the higher vocational college is the foundation to realize an efficient research management in the college. In this article, we suggest an implementation scheme based on the workflow technology for the research management system in the higher vocational college. First, we analyze the research management demand by the high-level college and then apply the workflow technology into the development of the research management system and on the basis of ASP.NET and SQL Server 2005, we complete this system. The system function conforms to the operation flow of the research management in the higher vocational college. Also with the good flexibility and reliability, it enables the system to have a flexible process restruction.
Declarative Approach to AGVS Modeling and Cyclic Scheduling
Authors: Bocewicz Grzegorz , Wojciech Muszyński , Banaszak Zbigniew
Published: September 2013

The paper presents constraint satisfaction problem driven approach to analytical solution of the cyclic scheduling problem in the Flexible Manufacturing System (FMS) producing multi-type parts where for material handling are used the Automated Guide Vehicles Systems (AGVS). Finding the conditions guaranteeing the AGVs deadlock-free and collision-free movement policy is the aim of our researches. The AGVs co-sharing the common parts of the transportation route while executing repetitive processes, i.e. being assigned to AGVs passing along machines in a cyclic way, can be modeled in terms of Cyclic Concurrent Process Systems (CCPS). Schedulability analysis for a given CCPS answers the question whether a cyclic schedule exists or not. The paper suggests approach for schedulability analysis of multimodal processes representing real manufacturing employing the declarative modeling.
Research the Coiled Tubing Deformation under Internal Pressure and Cyclic Bending
Authors: Li Lei , Shen Zhao Xi , Wang Peng
Published: September 2013

The tendency for coiled tubing grow in diameter and thin in wall under a combination loading of internal pressure and cyclic bending. The deformation mechanisms are described. The results show that the trends in coiled tubing deformation behavior are according with the context of theory: when the internal pressure exists, the tubing grew in the diameter; except for neutral point, the tubing thin in wall and the position in tensile is much thinner than in pressure; by the time of cycle increasing. The tubing grew in diameter and ovality, thin in wall.
Finite-Element Analysis of Ultrahigh Leaf-Shaped Steel Sculpture
Authors: Liu Meng Sha , Huang Ying , Ju Jin San
Published: September 2013

In this paper, a three-dimensional model of a steel sculpture was analyzed by using the finite element software ANSYS. The structural static response were achieved respectively under gravity load, ice load and wind load based on wind tunnel tests with the dynamic response under earthquake action. Besides, the structural parameters such as strength and stiffness under different conditions were also got. It is hoped that the analysis of ultrahigh steel sculpture will offer some technical support for practical engineering.
Spatial and Temporal Variation of Soil Erosion in Guangxi in Recent 20 Years
Authors: Chen Yan Li , Zhong Shi Quan , Mo Jian Fei , Luo Yong Ming
Published: September 2013

TM/ETM data as the base information combined with a digital elevation model are used to analyze the spatial distribution and temporal variation of soil erosion in Guangxi. The results shows that light, medium and strong are the main three levels of soil erosion in Guangxi. The proportions of light and medium soil erosion are higher which are 6.18% and 4.76% respectively. The total area of soil erosion and its degrees exhibit an upward trend since the 1980s. The area of soil erosion in Guangxi increases 4% in the past 20 years. The five levels of soil erosion performance an upward trend mostly. Medium soil erosion is of the biggest change with an increase of 1.29% while acute soil erosion exhibits a smallest change with an increase of 0.49%.
Change of Wind Velocity Caused by the Development of Downtown Areas: A Case Study in Jeonju Korea
Authors: You Ki Pyo , Kim Young Moon , You Jang Youl
Published: September 2013

The development of downtown areas causes urban heat island (UHI), which raises the temperature of cities. To remove the causes of UHI, extensive research is underway for securing green spaces and fresh air corridors in urban districts. The development of high-rise apartments in the downtown affected the fresh air corridor of the whole city, decreasing wind velocity by up to 50% compared to that before the development. In addition, with regard to apartment layout in complexes, the front-rear inter-building distance had a higher effect on the change of wind velocity in the complexes than the side-to-side inter-building distance. However, in a layout with the same repetitive form, a wide side-to-side space increased the intensity of turbulent flow in the complex, making the wind velocity almost three times higher at some parts.
Wavelet ANN Based Monthly Runoff Forecast
Authors: Xu Hui Jun
Published: September 2013

A wavelet artificial neural network to forecasting monthly runoff is proposed. The monthly runoff series is firstly decomposed to sub-series on different time scales, and each sub-series is modeled. The weights of the network are replaced by wavelet functions and are corrected by conjugate gradient method in the training iteration. Then the proposed network is trained with 49 years (1952-2000) actual data of one hydro power plant of Jiangxi province and is tested for target year (2001-2003). Finally, some actual results for mid and long term water inflow forecasting are obtained and which show the proposed method has a good precision for forecasting.
Study on Information Systems Framework of Electricity Production for Cascade Hydroelectric Power Station Group in a River Basin
Authors: Cai Hua Long , Wu Zhi Yu , Xiao Xi
Published: September 2013

With the gradual putting into operation of step hydropower stations in a river basin,the combined electricity production patterns of cascade hydropower station group will come into being. The information system of basin-wide electricity production will become the only means of cascade jointed scheduling and achieving maximum efficiency in a river basin. From the angle of the controlling station equipment, production personnel management and scheduling basin cascade hydropower stations group, the information systems framework of electricity production is divided into monitoring system of electricity production, management information systems, decision support system combined electricity production at three levels. A good framework system provides a hierarchical and functional partitioning for system development, and plays a controlling role for guidance to the system development.
Interaction between FDI and Agglomeration of Capital-Intensive Manufacturing Industry Using System Dynamics Modeling and Simulation
Authors: Jiao Ping , Jiang Ming Hui
Published: September 2013

The interaction between foreign direct investment (FDI) and agglomeration of capital-intensive manufacturers is studied using a system dynamics model and simulation. Data of manufacturers in three industries in the Yangtze Delta region from 1996 to 2010 are analyzed. Interactions between FDI and agglomeration are analyzed through the lifecycle of the industry cluster. Simulation results show that the interaction relationship changes over the entire lifecycle of the industry cluster. Mutual promotion is typical in the early stage during which the inflow of FDI contributes to industrial agglomeration and industrial agglomeration attracts FDI into the region. This mutual promotion diminishes in the expansion stage, disappears in the maturity stage, but appears again in the decline stage.
Design of Sledge Based on the Ergonomics
Authors: Du Qiu Lei , Cheng Xian Chun , Cheng Zi Xuan
Published: September 2013

According to physiological and psychological characteristics of adults, this paper proposed sled design based on ergonomics. The paper respectively provided human research, analysis and design for two aspects directly related to ergonomics, handlebar and seat, in order to make product safer, more comfortable and effective to meet consumers demands.
Algorithm to Improve Process Robustness in the Assembly & Test Manufacturing Industry A Case Study of the 1064nm Wavelength Laser Mark Equipment
Authors: Anthony Vincent Darin Moreira , Rajamony Bhuvenesh
Published: September 2013

This document explains and demonstrates the generic improvement algorithm created to enhance the maintenance methodology in the semiconductor manufacturing environment. The use of this algorithm demonstrates how a process and equipment can utilize it and get better output quality from a process and cost standpoint, which is a key driver in any manufacturing industry.
Spiral Defect Reduction of Hard Disk Drive Media
Authors: Pongtrairat Aunticha , Senjuntichai Angsumalin
Published: September 2013

The objective of this study is to reduce a number of defects in Hard Disk Drive (HDD) manufacturing due to spiral scratch on media by applying DMAIC steps of Six Sigma approach. The spiral scratch is firstly identified as the significant loss with 6.03% defective rate. Secondly, the paddle to disk space, top cover edge sharpness, pitch static attribute and number of load/unload cycle are found to be the key process input variables (KPIV). The experiment based on four KPIVs is then designed following Box Behnken design. With the results from the experiment, the response surface method is applied to determine the optimal setting for these four KPIVs with respect to the minimum percentage of the spiral scratch. Finally, the process with the optimal settings of the paddle to disk space at 3 mm, top cover edge sharpness at 0.002 inch, pitch static attitude at 0.01 inch and number of load/unload cycle at 10,000 times is implemented and monitored by the p control chart. After the improvement, the defective rate of the spiral scratch is decreased by 48.8% from 6.03% to 3.09%.
First Principle Molecular Dynamic Simulation of the GexAsxS100-2x Glasses
Authors: Chen Li An , Li Hong Jing
Published: September 2013

Recently, there were many accident of small dam break of reservoir in China, which reflects a problem in construction and management of small reservoir. By studying over 306 reservoirs which have been reinforced, the main problems to the safety operation of reservoir were concluded. The main 17 problems and 10 questions were discussed in this paper and the answers and suggestions are also made.
Optimization of Chromatographic Parameters for the Determination of Benzo(a)pyrene in Frying Oil by High-Performance Liquid Chromatography
Authors: Deng Bin , Wang Min , Shen Ling Min , Luo Jin Shan , Li Xi Hong
Published: September 2013

This study was aimed to optimize the chromatographic parameters for the determination of benzo (a) pyrene in frying oil. Liquid-liquid extraction was applied to extracted benzo (a) pyrene with n-hexane and, then analysed by high-performance liquid chromatography with ultraviolet visible detection. Data analysis suggested that good separation effect could be gained when acetonitrile and water had a ratio of 88:12. Flow rate of mobile phase of 1.0 ml/min was settled. The column temperature was set at 30 °C based on analysis time and separation effect.
On the Shape of the Leaves
Authors: Ding Shu Jiang
Published: September 2013

In this paper, we study the shape of the leaves. More specifically, we show that leaf shapes are affected by genes and external environment in different species; and affected by leaf vein and leaf distribution In the same species. Based on shape features, color features and vein features, aProbabilistic Neural Network (PNN) Modelis established by using Polar Fourier Transform. Finally, our experimental test shows that the total classification accuracy is 85.7%.
Study on the Changes of Urea Content during Brewing of Chinese Huangjiu
Authors: Zhou Jian , Lin Yan , Yang Jian Gang , Ma Ying Ying
Published: September 2013

The two acetyl monoxime colorimetric method was used to detect urea content. The yeast growth curve shows that a large amount of urea in the extracellular is secreted during the growth processing. And in the stable phase (cultured for 51 hours), urea concentration is up to 38.642 mg / L, but intracellular urea concentration (cultured for 27 hours) is only 6.043 mg / L. At same time, the extracellular urea amount secreted in the medium at initial pH3-4 is less than it at initial pH5 treatment. The urea secretion level is lower when yeast cultured in the medium with 12% of alcohol. The extracellular urea level decrease when the culture temperature increased from 28°C to 32°C.
High Cr(VI) Adsorption Performance of Coal-Based Activated Carbon in Aqueous Solution
Authors: Zhou Hua Lei , Zhu Qiong Qiong , Huang Dong Hua
Published: September 2013

The activated carbon with high surface area was prepared by KOH activation from anthracite and used as adsorbent for removal of Cr (VI) from aqueous solution. The pore structure and surface properties were characterized by N2adsorption at 77K, transmission electron microscope (TEM) and Fourier transform infrared spectroscopy ( FTIR). Effect of pH and isotherms at different temperature were investigated. Results show that the prepared carbon is a microporous-and mesoporous-adsorbent with developed pore structure and abundant surface oxygen-containing groups. PH value of the solution plays key function on the adsorption. The chemical adsorption dominates the adsorption process. The activated carbon exhibits much higher Cr adsorption capacity than the commercial activated carbon at initial pH of ~3. The equilibrium adsorption data are fitted by both Freundlich model and Langmuir model well.
The Forecasts Study of City Economy and Cyclic Integrating Development
Authors: Lin Tian Shui
Published: September 2013

In this paper, we select the multi-dimensional evaluation index system based on principal component analysis for quantitative evaluation of circular economy in Chongqing . We use ARIMA model to predict Chongqing city cycle economic trends which rely on a comprehensive study in the development of circular economy status quote.
Public Involvement in Environmental Governance: Review of Benin's Experiences
Authors: Adohinzin Junior Bloh Nignilo , Xu Ling , Zhang Shu Shen
Published: September 2013

Nowadays public participation is recognized as an integral procedure to achieving sustainable development as well as a good method of environmental governance. This study aimed to improve the quality of public participation in the field of environmental governance. To this end, it used Benin republic as a case study to provide an analytical review of two public participation approaches developed in Republic of Benin for environmental management. Results highlighted some keys limitation of each of those approaches. The study concludes with recommendations to improve the quality of public participation application in Benin.
Fitness Evaluation for Residential Land in a Mountainous Town
Authors: Zhao Xiao Fan , Wang Jia Bao
Published: September 2013

Nanfen is a mountainous town in East Liaoning of China, where plenty of industrial and mining enterprises were allocated. Suitability evaluation on residential land in Nanfen was of importance for local resident living. Evaluation results indicated the most suitable, sub suitable, barely suitable and unsuitable area for residential land was 208.08 km2, 169.95 km2, 149.51 km2 and 91.46 km2, respectively. Spatially, the most suitable areas were mainly distributed in Sishanling town, and sub suitable, barely suitable and unsuitable areas were chiefly located in Xiamatang town. Residential land in Nanfen should be unified and reallocated to better residents living environment.
Study on the Assessment of Land Ecological Suitability in Urban Connecting Band Based on the Method of “Entropy Weight-Geographic Information System”
Authors: Liu Zhi Hong , Xu Ling
Published: September 2013

Taking the connecting band of urban integration as study area, based on an appropriate index system, the method of Entropy Weight-Geographic Information System (GIS) was employed to carry out the land suitability assessment at a regional scale. Shenyang Irrigation Area (SIA) was taken as the practical example. It was found that the method was reasonable to assess the land suitability and the assessment results can be used to support land planning in a flexible way.
An Environmental Risk Zoning Method Based on Environmental Receptor Grading and Consequence Assessment
Authors: Xie Jia Cheng , Zheng Hong Bo , Ma Shu Ming , Zhang Shu Shen , Song Guo Bao
Published: September 2013

The methods in environmental risk zoning put more attention on analyzing the characteristics of environmental risk sources, while ignoring the vulnerability environmental receptor. In the work, a method based on environmental receptor grading and consequence assessment was developed for the environmental risk zoning. The method includes five steps and conducts in the (Geographic Information System) GIS platform. Finally, the method was applied in Pine Island Chemical Park, China as an illustration.
Introduction of New Methods for Insulator Contaminant Detection
Authors: He Ji Guang
Published: September 2013

It is crucial to make insulator contaminant detection owing to that insulator can form pollution flashover when being exposed in outside operating conditions for long term, which can cause great damage. It can effectively prevent accident from happening when timely detecting the contamination on the surface of insulator. This paper provided detailed introduction of three new methods of insulator contaminant detection on the basis of the brief summary of traditional detection methods.
Impacts of Surface-Active Agents on the Crystal Structure of Nano Manganese Oxide
Authors: Li Fu Yun , Wang Jing , Qin Ying Yang , Yang Li Zhen
Published: September 2013

The nano manganese oxides were prepared with the hydrothermal method by adding surface-active agent. The influence of the type and addition amount of surface-active agent on the preparation of nano manganese oxides was studied. The products were characterized with XRD. Experimental results show that MnOOH is obtained at 180°C with the addition of N,N,N-trimethyl-1-dodecanaminium bromide, and Mn3O4is obtained at 180 °C with OP Emulsifier or Tween-80 added. Different addition amount of surface-active agent would have diverse effects on the purity of products.
First-Principle Study of Electronic Structure and Stability of Ru1-xPdxZr
Authors: Yang You Cai , Xie Ming , Zhang Ji Ming , Liu Man Men , Chen Yong Tai , Hu Jie Qiong
Published: September 2013

A theoretical study on Ru1-xPdxZr solid solutions has been carried out by means of periodic density functional theory (DFT) at generalized gradient approximation (GGA) level. Stability and martensite transformation analysis were performed based on the formation energy and electronic structures. The results show that the ternary phase Ru2Pd6Zr8is stable because the de-mixing energy of Ru2Pd6Zr8is-0.05eV. The calculated cohesive energy, bond length and density of states showed that the orthorhombic-Ru2Pd6Zr8is more stable than bcc-Ru2Pd6Zr8, for the martensite transformation occurs when about 70% of the Ru atoms are replaced by Pd atoms. The studies provide a theoretical basis to the development and application of Ru1-xPdxZr solid solution.
A Method on Simulation and Parameter Design of Polyurethane Buffer
Authors: Lu Yun , Li Wei Jia , Li Yun Peng , Li Jian Feng
Published: September 2013

The polyurethane buffer is widely used in mechanical industry, intelligent manufacturing, internal combustion engine industry and etc.. The parameter design of the polyurethane buffer is often based on empirical formula with which it usually can not obtain the optimal parameter. This paper aims at studying the process of the buffer and optimizing its parameter. Firstly, the result of compression and shear tests of the polyurethane material is compared with simulation result to validate the simulation method is reasonable. Then buffers of different sizes with practical condition were simulated. During the simulation, this paper researched the maximum deceleration of the mass block in models with different sizes of polyurethane buffers. Lastly, the size of the buffer with minimum volume which is agreed with the request of the maximum deceleration of the mass block is obtained by data handling based on the simulation result, above on which a database was built.
Applications of FRP Material in Bridge Structures
Authors: Jia Li Jun , Jiang Yang
Published: September 2013

For bridge structures using the traditional steel material, some problems are hard to solve, such as corrosion of steel bar and fatigue of steel deck. And the self-weight stress of the traditional high-strength steel as the material of cable stayed and suspension bridges will limit the main span and load-carrying. As a new type of high performance structural material, fiber reinforced plastic (FRP) has many advantages, such as small mass density, high tensile strength, excellent corrosion and fatigue resistant ability. Therefor in recent years, it has attracted much attention by the construction industry. In this paper, characteristics of FRP material are introduced and then applications of FRP material in bridge structures are discussed.
Online Strategy for Scheduling By-Product Gas Consumption and Adjusting Gas Holder Level in Iron and Steel Industry
Authors: Ru Hai , Gao Feng , Xu Yin Feng , Guan Xiao Hong
Published: September 2013

The more efficient use of by-product gas has always been a hot issue in the iron and steel making process. The gas generated during production process is stochastic and hardly predicted accurately. Specifically, how to regulate the supply of by-product gas from gas holder to power plant in the scheduling period to maximize the total profit of gas reutilization is present work. In response to this objective, online algorithm will be applied here to analyses the optimal strategy, which manages the by-product gas supply scheduling in term of online strategy and competitive analysis. We give the competitive ratio’s lower bound of the problem, and analyze the properties of algorithms, then give the QEW-algorithm with a competitive ratio equals to γ/(γ-β). The results of the study have guiding significance and reference value to decision makers facing the actual production process.
A Video-Based Theodolite Simulation System
Authors: Jian Zhong , Zhe Zheng
Published: September 2013

In this paper we realized a Video-based theodolite simulation system, simulating and modeling theodolite servo control system with Simulink, build the model of theodolite movement. Split the recording video into images, and projected it onto the virtual coordinate system, then stitching images by SIFT method, the result panorama is used as background. We propose a algorithm based on gradient histogram, detect the target from the video image, then superimposed it on the background. System achieve a high degree of simulation, and reproduced the mandate process of the theodolite.
Optimize on the Ventilation System of Pedestrian Mountains and the Return Airway of 1930 Coal Third District after Connected
Authors: Wang Ying Chang , Luo Di , Tang Qiang , Hu Jie
Published: September 2013

According to the production requirements and arrangements of 1930 coal, Third District pedestrian mountains and Third District return airway were communicated. And the ways that adding appropriate resistance in the mining area return air route, continue to increase resistance in the +1944m horizontal transport Shimen, taking iron damper instead of wood damper, adjusting the Third District wind turbine operating parameters, removing the temporary damper of the Second District 6# main transport roadway and so on were integrated optimization. The Third District ventilation system was formed. Meanwhile the ventilation system design experience and recommendation were summarized. The mine ventilation system would be stable and reliable and mine daily production would be safety.
Dynamic Response Analysis of the Hydraulic Pipe under Jets of the Aircraft Tire Burst
Authors: Jiang Run Lian , Wang Yao Hua , Fan Cheng Fei , Duan Mian Jun
Published: September 2013

The finite element model of an aircraft hydraulic pipe was established in this paper. Based on LS-Dyna software equivalent static pressure and peak pressure surface loads on the tire burst test (main landing gear retracted state, and did not consider the impact of tire debris) jets were applied to the hydraulic pipe. Both stress and strain contours of hydraulic pipe were obtained under dynamic loading. Plastic strain occurred under both loads on the hydraulic pipe, and the peak pulse loads were more severe than equivalent static loads, the maximum strain reached 0.41172 under the peak pulse loads. However, in both cases the pipe is not broken.
The Mobile Oilfield Map Based on SVG and Inforamtion Integration
Authors: Yuan Man , Yuan Jing Shu , Huan Gang , Wang Dan Dan
Published: September 2013

A light mobile GIS framework is proposed which is based on J2ME and mobile scalable vector graphics (SVG), GIS is an important component in digital oilfield. First, it defines a general mobile GIS framework. Second, all kinds of GIS code rules are defined, how to manage map layer in SVG is defined, all kinds of GISs object can be described in SVG and DOM of XML. And finally, in distributed environment, based on SVG, JAVAME and related technologies, a light mobile GIS platform is implemented. In this case, the light mobile GIS platform can be used to not only transmit production data, but also locate the interested objects, and the platform is applied to the Daqing oil field.
The Brittleness Source Identification of Electric Grid System
Authors: Xu Ai Hua , Xue Chen Guang , Xu Jian Jun
Published: September 2013

Brittleness source identification is the work of finding every brittle source. At first, build model of electric power system, based on direct current tide, all branch currents can be solved quickly. Break off every branch in turn. Use distributing factor method to obtain the other branch currents by breaking a branch current. If the other branch current exceeds the 20% rating current, then it breaks. This will lead to the refresh distribution, until all branch breaks, namely the brittleness being motivated, or until the other branch currents all satisfy the restriction condition. Thus all branches which lead brittleness to be motivated is the brittle source of electric power system. Through analyzing a three generatrixs system, obtain that (2),(3) and (4) is the brittle source.
The Function of the Materials Science in Industrial Design
Authors: Shen Hua Ping , Li Wei
Published: September 2013

It is known that design means the art of times. As the industrial development enters the high-tech stage in current society, handicraft, industry and high technology have integrated with each other well. Moreover, informatization has been rapidly applied in the various aspects of human life. However, with the advent of digitalized era, design now lies in the age of reconstructing languages.
Performance Simulation of Hydraulic Energy-Regenerative Shock Absorber
Authors: Xu Lin , Li Zu Bo , Guo Xue Xun , Gong Bian
Published: September 2013

This paper presents several kinds of energy-regenerative shock absorbers, which all exist some problems. Then, we put forward a novel type of shock absorber: Hydraulic Energy-regenerative Shock Absorber (HESA). In this paper, we focus on damping characteristic and energy recovery of HESA. Its feasible that damping force can be increased by adding a damping orifice in the extension stroke. The damping characteristic of HESA meets the requirements, whats more, it has great potential on energy recovery.
Evaluation of Empirical Kinetics Models of Athermal Martensite Transformation in Plain Carbon and Low Alloy Steels
Authors: Lee Seok Jae
Published: September 2013

In this paper, the empirical kinetics models for athermal martensite transformation in plain carbon and low alloy steels were reviewed. Four models based on an exponential function were selected and evaluated by comparing with the published values of M50 and M90 temperatures. It was confirmed that the model proposed by Lee and Van Tyne resulted in more accurate predictions of athermal martensite transformation kinetics by considering the composition dependent parameters and the exponent term to express a sigmoidal shaped curve.
Experimental Study on Calibration Model Based on Pt100 Temperature Sensor
Authors: Li Peng Fei , Yv Cheng , Yang Yong Ping
Published: September 2013

In order to improve measuring-temperature accuracy of the PT100 temperature sensor, we conduct multi-point calibration experiment. The BP neural network based on LM algorithm can process experimental data and the least square method can fit out more accurate formula that express the relationship between the temperature and resistance. It is available that this arithmetic that the interrelated experiment demonstrate its accuracy improve precision of the PT100 temperature sensor.This arithmetic can be applied to the calibration test.
Rapidly Construct the Network Teaching Environment for Training
Authors: Zhang Tie Jun
Published: September 2013

Usually the support environment for network teaching needs establishing in short time for numerous training activities. In order to meet the general requirements of many trainings, a relatively complete network teaching system is designed based on B/S mode and with adoption of ASP.NET and C# etc. key technologies and programming language, achieving the rapid transfer, sharing and communication and effective management of teaching information. The method can rapidly construct the network teaching environment with such features as universality, convenience, economy and expansibility etc.
The Group Keyword Management Method of the Heterogeneous WSN Based on Topology
Authors: Ma Tao , Chen Juan
Published: September 2013

The new method used the node to make up the keyword management tree. The keyword management tree was optimized with renewing the group keyword. In the meanwhile, the use of father nodes and the processing batch method improved the keyword renewing efficiency. The analysis result of theory shows that the method is a high efficiency and extendible group keyword management method which used in the heterogeneous wireless sensor network.
Study on Prediction Model to Terminal Demand Based on Improved Genetic Neural Network
Authors: Huang Chen , Huo Yan
Published: September 2013

Reasonable forecast of terminal demand is one important prerequisite of the deepening development of 3G-device industry. Through the analysis of characteristics about terminal consumption, one prediction model was used for 3G terminal demand with an artificial neural network mode in which genetic algorithm solved the problem about local minimum value of BP neural network and the input set was solved by fuzzy method, and before that the feature vectors were in the form of inconsistency measure. The corresponding marketing strategy can be put forward pertinently to facilitate fully the potential demand group and improve operational efficiency.
Research on Pattern Classification of SVM-Based Gait Signal
Authors: Yin Jing
Published: September 2013

Research on Parkinson-based gait is a hotspot nowadays. However, few researches on the gait characteristics of PD patients start from the plantar pressure signal. In this paper, characteristic parameters are extracted from the gaits of PD patients and healthy people, and two-sided T inspection is performed to find significantly different parameters as input for the model classifier. The SVM classifier designed can achieve good result in discriminating the gaits of patients and normal people.
Research on Automatic Line of Wheeled Robot Based on MCU
Authors: Jiang Bao Hua , Qi Qiang
Published: September 2013

This paper proposes an automatic line of wheeled mobile robot system. The scheme designs the hardware system and the corresponding software based on 8 bit MCU and many sensors like tracing sensor, gives the designing principles of the hardware and software, analyzes the interface of each module, and expounds the function of the robot.
Theoretical Study of Stereoselectivity for Syn-Selective Cross-Aldol Reactions of Aldehydes Catalyzed by Chiral Diamine Organocatalysts
Authors: Zhao Cheng Yan , Fu Ai Ping , Li Hong Liang , Wang Ping , Xu Yong , Duan Yun Bo
Published: September 2013

Quantum mechanical calculations have been performed to study the stereoselectivities in the direct cross-aldol reactions of aldehydes catalyzed by simple chiral diamines. The detailed computational studies on the stereochemistry-controlling step of the subject reactions have been presented by DFT calculations at the B3LYP/6-31G* level. The poor agreement between the calculated and the observed diastereomeric ratio and enantiomeric excess values is obtained for all diamines catalysts. Further M06-2X calculations can provide a reasonable explanation for the observed syn-selectivities of the asymmetric cross-aldol reaction between propionaldehyde and 4-nitrobenzaldehyde.
ESD and LU Immunities of LV nMOSFETs by the Drain-Contact Variations
Authors: Chen Shen Li , Lee Min Hua
Published: September 2013

The non-uniform turned-on issue of a multi-finger GGnMOS is deeply affect the ESD robustness. This paper introduces a drain-side engineering: by removing the drain contacts to increase the Ron value of a GGnMOS. However, after the actual systematic testing, it can be concluded that removing the drain contacts will obviously decrease the ESD capability and this way is not good for the ESD ability. The It2 value in the Type-1.1 DUT becomes only 56% of the reference group (Ref. DUT). The It2 value will increase as along with the contact number to increase. Meanwhile, the layout pattern of the contacts concentrated around the both ends will have a higher It2 value, i.e., (It2)type2 > (It2)type1, the increasing percentage of It2 values of Type-2 as compared with Type-1 can be up to 8.63%. So, a drain-contact arrangement will strongly affect the device ESD ability.