bluuebunny/crossref_metadata_2025 huggingface dataset:
Fuzz Modeling and Evaluation on the Reliability of Coal Mine Ventilation System
Authors: Huang Hui , Liu Hai Bin
Published: February 2011

According to modern system security theory and method，a series of indexes to evaluate the system safety and reliability of coal mine ventilation system are established. In order to apply it into practice, the membership function is also introduced into the evaluation process. The formula to calculate integrated score of mine ventilation system safety and reliability were brought into the model. The above model was applied to evaluate safety and reliability of mine ventilation system and had achieved good results.
Weft Knitted Pattern Designing Based on the Wave Filter
Authors: Li Ying Lin , Cao Li Hui , Yang Lian He
Published: February 2011

Weft knitted pattern design is one of the most important compositions of textile CAD. Traditional pattern design has a higher request on designers, which can not meet the demand on product development. This paper introduced an automatic approach of weft knitted pattern design, put forward a wave filter which is used to process images based on mathematical functions, described its theory and its algorithm in Visual C++ environment, the result is satisfactory. This method provided a new way for weft knitted pattern design.
A New Method for BOM Modeling
Authors: Yan Chong Jing , Song Yan
Published: February 2011

Manufacturing enterprises are eager for a single source of product data(SSPD). But SSPD is just a idea without supporting of a specific approach. In this paper, BOM and manufacturing process is applied in establishing a SSPD. For the implementation, an integrated virtual BOM is modeled and the formal description is discussed in detail. The integrated model can improve the consistency between BOM views and carry lots of information for manufacturing planning. An case study is shown at rear part of the paper.
Photochromic and Self-Cleaning Properties of TiO2-AgCl/Cu2+ Thin Films
Authors: Sangchay Weerachai , Sikong Lek , Kooptarnond Kalayanee , Wei Xin
Published: February 2011

TiO2-AgCl/Cu2+ thin films containing 0 to 1%Cu2+ coated on glass slides were prepared by sol gel-dip coating method. The prepared films were synthesized at the temperature range of 100-500 °C. The microstructure and properties of synthesized TiO2-AgCl/Cu2+ thin films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectroscopy (DRS). Finally, the hydrophilic property was evaluated by means of contact angle of water droplet on the films. The results show that both calcinations temperature and Cu2+-doping have an effect on anatase and AgCl phase formation, crystallite sizes and phase content of the films. It was found that TiO2-AgCl/1%Cu2+ thin films calcined at 500 °C exhibit the highest photochromic (darken reaction) and self–cleaning effects (small contact angle) under UV irradiation.
An Adaptive Edge Detection Method for Image Polluted by Hybrid Noise in Image Measurement
Authors: Li Bei Zhi , Chen Hua Jiang , Yang Jian Guo
Published: February 2011

Edge detection directly affects the accuracy of image measurement. In this paper, focusing on the edge detection of the image of mechanical part polluted by hybrid noise consisting of Gaussian noise and impulse noise, an adaptive edge detection method is proposed. The proposed method combines a new hybrid filter smoothing noise adaptively with Canny operator to avoid the conflict of Canny operator between noise removing and edge locating, and uses Otsu threshold selection method to determine Dual-threshold of Canny operator adaptively. Using the gauge image polluted by hybrid noise as experiment object, the performance of the proposed method is evaluated qualitatively and quantitatively. Experimental results show that the proposed edge detection method has good performance.
Removal Virus Bioaerosols by Filters Pretreated with Chitosan/Surfactant
Authors: Huang Yi Chin , Yang Shin Hao , Luo Chin Hsiang
Published: February 2011

This work considers the effects of using the chitosan/sodium dodecyl sulfate (SDS) pretreated filters (CSPFs) as the antiseptic filters on the bioaerosol penetration. Three concentrations of chitosan solutions and chitosan/SDS mixing solutions were used to pretreat the polypropylene fibrous filter to make them antiseptic. The λ virus bioaerosol was generated using a Collison nebulizer, as the challenged bioaerosol. The effects of various factors, including the face velocity and the relative humidity on the bioaerosol collection characteristics were evaluated. Experimental results suggested the pretreatment of chitosan/SDS did have an antiseptic effect on virus bioaerosol and increase the inactivation mechanism. Experimental findings also revealed that the addition pretreatment of SDS did raise the inactivation effect of the chitosan. When adding SDS in the chitosan solution, the ammonium groups could appear and present the antiseptic benefit more obviously. Moreover, the antiseptic of the pretreated filter decreased with face velocity and RH.
High Efficient Sediment-Transport Water Volume in High Sediment-Laden River
Authors: Yan Jun , Liang Biao , Cao Hui , Zhang Yu Hua
Published: February 2011

Analyzed the sediment-transport process in high sediment-laden river, the new concept and calculating method for sediment-transport water volume are proposed. Based on field data of sediment and water volume in the Lower Yellow River from 1950 to 2000, the sediment-transport water volume and unit sediment-transport water volume in LYR are calculated. Meanwhile, relations between them and influencing factors are confirmed to calculate efficient sediment-transport water volume after construction of the Xiaolangdi reservoir.
Research on Performance of Steel Slag and Porous Cement Concrete Made by Steel Slag Aggregate
Authors: Liu Qun Di , Sun Jia Ying , Han Ying
Published: February 2011

Porous cement concrete, which has some superiority in environmental protection compared with normal concrete, has been more widely applied. Performance of Steel Slag and influence of the steel slag aggregate on physical and mechanical properties and durability of porous cement concrete were studied in this paper. Based on study of porous cement concrete properties, the paper puts forward several typical pavement structure forms in engineering application of porous cement concrete from finite element analysis method.
Study on the Adhesion of Films on Gd by Magnetron Sputtering
Authors: Zheng Xiao Qiu , Xie Shi Kun , Yi Rong Xi
Published: February 2011

In order to research the adhesion of sputtering protective coating of Gd. Gd substrates were differently coated with 1Cr18Ni9Ti, Ti, Cu and Al by means of DC magnetron sputtering technology. The characteristics of the films were investigated by scanning electron microscopy (SEM), EDS, and the adhesions of films were tested by tension test. The results show that the films of 1Cr18Ni9Ti, Ti and Al are smooth and perfect, the interferences between 1Cr18Ni9Ti, Ti, Al and Gd join together strongly, and the average strength of adhesion is 25MPa in these tests on the optimize parameters. While the films of Cu are rough and bad, the interferences between Cu and Gd join together loosely, and the largest strength of adhesion is only 3.02MPa in these tests on the optimize parameters.
The Effects of He–Ar-O2 Shielded Gas Addition on GTA Welding on Welded Shape of UNS S31803 Duplex Stainless Steel
Authors: Nansaarng Santirat , Sopha Suthiphong
Published: February 2011

The effects of oxygen in helium-argon base shielded GTAW on weld shape of weld penetration are systematically investigated by bead-on-pale welding on UNS S31803 duplex stainless steel. The results show that amount of oxygen addition to He-Ar mixed shielding can significantly change the weld shape from a wide narrow type to narrow deep one and the weld depth/width ratio can be doubled due to the change in Marangoni convection condition from an outward to an inward direction.
Optimal Scheduling and Simulation of Snow Removers for Airfield Pavement Based on Breadth-First Search
Authors: Wang Li Wen , Wei Jiang Long , Zhang Lu , Yao Guo Peng
Published: February 2011

In this paper, the Breadth-First Search algorithm is adopted to optimize the scheduling of Snow Removers for Airfield Pavement in large airports, as a result, the efficiency of cleaning work can be improved and the delayed time of the airport open can be decreased. The designed function of the automatic formation of plaque, the Airport Road area of adjacency matrix method, weight matrix, completed the snow removal vehicle scheduling model. Finally, an example, show that the algorithm of the allocation of airport runway snow removal vehicles, the optimized performance, as the airport runway snow removal vehicles provide a new strategy for optimal operation.
Preparation of Carbon Nanoparticles by Long Pulsed Laser Ablation in Water with Different Laser Energies
Authors: Thongpool V. , Denchitcharoen S. , Asanithi Piyapong , Limsuwan Pichet
Published: February 2011

Carbon nanoparticles were synthesized via laser ablation of graphite target in distilled water. The particle sizes of carbon nanoparticles were investigated as a function of laser energy: 1, 1.5, and 2 J/pulse. Using water as a matrix during synthesis is another potential way to control the particle size. The mean size increases when increasing the laser energy. The particle morphology is a globular shape. The sizes of the nanoparticle were evaluated from both SEM image analysis and Scherrer’s equation. The sizes from the equation are smaller than those obtained from SEM, which indicates that the particles are polycrystallines.
YSZ-Reinforced Ni-P Deposit: An Effective Condition for High Particle Incorporation and Porosity Level
Authors: Baba Nor Bahiyah , Davidson Alan , Muneer Tariq
Published: February 2011

Nickel ceramic composite have emerged as potential corrosion, wear and thermal resistance. The present work contemplates reinforcement of Ni-P deposits with YSZ ceramic by electroless nickel deposition technique. The ratio of metal nickel (Ni) to ceramic yttria stabilized zirconia (YSZ) in composite materials determines its ability in corrosion, thermal, wear resistance. The amount of porosity enhances thermal insulation. The 2k full factorials design of experiment and analysis of variance (ANOVA) were used in screening the EN composite process parameters for effective Ni-YSZ co-deposition for high ceramic incorporation and porosity level. A mathematical model was developed using piecewise linear regression analysis to predict the composition and porosity in terms of the EN Ni-YSZ composite coating process parameters. The models developed to predict the Ni composition and porosity in Ni-P-YSZ composite.
Experimental Analysis of Dynamic Yield Strength of Material and Research on its Numerical Method
Authors: Zhao Guang Ming , Meng Xiang Rui
Published: February 2011

The present paper analyses the Tailor impact problems when a cylindrical projectile imposes impacts on the rigid target vertically. A hypothesis is proposed about the law governing the velocity variation during the impacting process, with a theoretical framework developed for the analysis based the deformed projectile length. With the theoretical framework, a simulated analysis is conducted of the Tailor impacting process by turning to the reproducing kernel particle method. Then analysis is conducted of the experiment results, together mesh-free simulation, indicating that the results obtained from the theoretical deduction, from the value simulation and from the experiments are mutually compatible.
Building Engineering Supplier Selection Based on Fuzzy Group Decision Information Aggregation
Authors: Chen Xiang , Zhou Xue Feng , Zhang Yong
Published: February 2011

Material is the precondition for the implementation of building engineering project. Material procurement cycle and quality directly related to the progress and quality of building project, which is the effective protection of successful completion. Owing to many factors of uncertainty of decision-making environment and fuzzy thinking of decision-makers, the selection of building engineering supplier represents as group behavior selection process in fuzzy environment. Based on analysis on fuzzy group decision methods, the information representation method in fuzzy condition was introduced to present a kind of fuzzy information aggregation method. Application example of supplier selection of some building company shows that the method can reflect preference of enterprise on fuzzy and adequately consider each schema with proximity, which is a more practical approach for supplier selection.
The Preservation Mechanism of Treated Populus Ussuriensis by Extract of Camphor Leaves
Authors: Xu Guo Qi , Liu Jun Liang , Hu Sheng Hui , Wang Xue Hua
Published: February 2011

Populus ussuriensis has been widely used in furniture and building. However, it was easy to be decay. When it was treated by water extractive of camphor leaves, it had better effect on against decay. So it was necessary to research the preservation mechanism of it. Therefore, the water extractives of camphor leaves and the ether extractives of treated P. ussuriensis were determined by GC/MS. The results shown the main components were D-Camphor, 1, 6-Octadien-3-ol, 3, 7-dimethyl- and α-Terpineol in water extractives of camphor leaves. They were served as cardiotonic, anodyne, preservative, pesticide, so they had function of prevention. And, they also existed in treated P. ussuriensis. Therefore, the preservation mechanism was maybe known that D-Camphor, 1, 6-Octadien-3-ol, 3, 7-dimethyl- and α-Terpineol was active substance for bacteriostat. So, the water extractives of camphor leaves could be develop an environment-friendly wood preservative.
Microstructure of Eucalyptus pellita under Different Thermal Treatment Temperatures and its Effect on Physical-Mechanical Characteristic
Authors: Wang Xue Hua , Liu Jun Liang , Xu Guo Qi , Chai Yu Bo
Published: February 2011

Taken the eucalyptus pellita treated for example, this article introduced the microstructure of wood without heat-treatment and microstructure-change under different temperatures (80°C, 120°C, 160°C, 200°C, 240°C, 280°C), analyzed the affect of the thermal treatment on wood’s physical-mechanical characteristic from microstructure. The result shows that: 1) pit membrane on the vessel tended to be broken or deciduous; 2) as the temperature ascending, fiber appears wizened and some grows rose, cell cavity trails off, severing of fiber could be saw on the transverse section, and brittle fracture on the radial cut; 3) weight reduced as temperature went up, while bending strength and modulus of elasticity descending after ascending, vertex appears when the temperature was 120°C, resistance was seriously lost at 280°C.
The Effect of CH4 and CO2 Exposure on Carbon Nanotubes Electrical Resistance
Authors: Firouzi Amin , Sobri Shafreeza , Yasin Faizah Mohd , Ahmadun Fakhru'l Razi
Published: February 2011

This research was carried out to monitor and investigate the gas sensing effects on carbon nanotubes (CNTs) by a systematic study of the variations in the electrical resistance as sensor signal induced by adsorption of CO2 and CH4 gaseous molecules. The CNTs were synthesized by Floating Catalyst Chemical Vapor Deposition (FC-CVD) method on quartz substrate under benzene bubble at temperature of 700°C. Then, they were tested for gas sensing applications operating at room temperature. Upon exposure to gaseous molecules, the electrical resistance of CNTs dramatically increased for both CO2 and CH4 gases with short response time and high sensitivity. It was also observed that the CNTs device behaves as a p-type semiconductor when exposed to gaseous molecules. In addition, the recovery of the sensors and mechanism of gas sensing procedure are discussed.
Ethylene Polymerization by a New Zirconium Complex
Authors: Cheng Zheng Zai , Nie Yu Jing , Yan Xiao Chao , Lei Rui , Lin Su Su
Published: February 2011

Novel zirconium complex C2 has been prepared by treatment of the ligand complex C1 with ZrCl4•2THF in dichloromethane solution. The complex C1 and C2 were characterized by 1H-NMR and IR. Activated by MAO, Complex C2 displays very high activity for ethylene polymerization under the reaction temperature of 30～80°C and the viscosity-average molecular weight of polyethylene is more than 3.50×104 when reaction temperature is no more than 60°C.The molecular-weight distribution measured by gel permeation reached 2.3.High melting points measured by DSC indicates that the polyethylene produced by complex C2 is high linearity and high crystallinity.
Computation of Stress Intensity Factor for Multiple Cracks Using Singular Finite Element
Authors: Daud Ruslizam , Ariffin Ahmad Kamal , Abdullah Shahrum , Ismail Al Emran , Zulkifli A.
Published: February 2011

The simplification of two dimensional approaches in singular finite elements has promoted the method to be used in the formulation of stress intensity factor (SIF) of multiple cracks in finite body. The effect of shielding and amplification are considered in defining the SIF. As been observed, the current available analytical approximations are more restricted to several assumptions. The more accurate and less restricted method has motivated this study. This paper presents the investigation of singular finite elements applied in two dimensional finite element models subjected to different crack-width ratio and cracks interval ratio. The newly finite element formulations are resulted with good agreement with theoretical statement compared to analytical solution. The weak points of presented analytical solution are discussed regards to the influence of crack width ratio and cracks interval ratio.
Utilizing the QFD to Make the Most Potential Marketing Strategy through Applying the Innovative Wireless Technology in a Hypercompetitive Era
Authors: Hsieh Ming Yuan , Kung Chaang Yung , Lai Chih Sung , Chen Chih Tung
Published: February 2011

In this research, three necessary relations are cross-analyzed by eighteen customers’ needs (WHATs) and nineteen corporate i-technological measures (HOWs) through the use of the application of the House of Quality (HOQ) model of the Quality Function Development (QFD) and a comparison of the Multiple Criteria Decision Making (MCDM) for discussing the contemporary commerce environment. The evaluation that contributed the most is the comprehensive methodology and associated 7-steps measurement of the HOQ model of the QFD are applied in order to avoid research arbitrariness, for evaluation comparability and linguistic vagueness, which are the pellucid measured characteristics of the HOQ models of the QFD regarding the features of complicated theoretical concepts, data-collecting processes and computed procedures. Specifically, the application of the quantitative entropy methods, similar measure and the TOPSIS are utilized in this study to minimize the indistinctness of the linguistic exactitude and to decreasing the subjective concepts of the five selected customers. According to the measured consequences in this study, it is very apparent that enterprises have to develop a creative i-technological marketing strategy to create an effective and efficient i-technological interface in order to achieve the customers’ desires consisted of sale customization in product concentrated subjective and sale advertisement, sale promotion and sale employees in promotion considered session. Eventually, some suggestions for managers and researchers are inductively formed to further develop the best innovative (i-technological) marketing strategy for enterprises in a thriving cyber commerce environment.
Fracture Mechanics Analysis of Interfacial Crack in Anisotropic Bi-Materials
Authors: Jhan Jyun Yong , Chen Chao Shi , Tu Chia Huei , Ke Chien Chung
Published: February 2011

This paper presents a single-domain boundary element method (BEM) for linear elastic fracture mechanics analysis in the two-dimensional anisotropic bi-materials. In this formulation, the displacement integral equation is applied on the outer boundary only, and the traction integral equation is applied on one side of the crack surface only. A special interfacial crack-tip element was introduced to capture exactly the oscillatory behavior. The computer program with the FORTRAN code has been developed to effectively calculate the stress intensity factors (SIFs) of an interfacial crack within anisotropic bi-materials. This BEM program has been verified having a good accuracy with the previous researches. Furthermore, by analyzing the different anisotropic degree of interfacial crack in an infinite domain, we found that the stress intensity factors of interfacial crack tips had apparent influence by the geometry forms of cracks and media with different anisotropic degrees.
The Perceptions and Usage Intention of a Telecare System: An Empirical Study in Taiwan
Authors: Hsieh Hui Lung , Tsai Chung Hung , Chuang Bi Kun
Published: February 2011

With the growing number of aging population and chronic illnesses, how to help elderly residents access the health care service timely is a challenge for health care institutions in Taiwan. Recent advances in information, communication and biomedical technologies have combined to allow the development of various types of telemedicine technology designed to enhance or expand the health care services of elderly residents. However, most telecare studies focused only on medical care or development of technology rather than on comprehensive evaluation of residents’ (or patients’) perception about service processes. The purpose of this study was to explore rural residents’ perceptions and usage intention of a telecare system after they have used it. Results from this exploratory study showed that most elderly people have never heard or touched telecare systems before the study was conducted. However, the general perceptions of such systems included improvement of interacting with medical staffs, safety protection, convenient care, and one needed item of services in daily life. Especially, the mostly risk perception was privacy risk, that is, data confidentiality and individual privacy. Generally, most elderly residents evaluated their telecare experiences and perceptions as being positive. Besides, most elderly resident were willing to use the telecare system without fees. However, they felt risky about confidentiality and privacy toward this technology. To improve trustworthy perception of this novel technology, telecare providers should implement appropriate safeguards to protect patient health information exchanged in a telecare setting. Also, the physicians/nurses should take the time to communicate with the residents, especially in the form of education, about the benefits of technology. To optimize the effectiveness of this promising technique, more research on the relationship between residents’ (or patients’) perceptions and influences of technology will need to be conducted continually in future.
Vehicle Interior Noise Measurement and Analysis
Authors: Li Zhong Xin , Wang Guang Ping , Wang Shen Xu , Jiang Hong
Published: February 2011

A method of vehicle interior noise order analysis was presented to resolve the loud noise problem in a new indigenous vehicle. Sound and vibration properties of the vehicle were tested. The interior noise and vibration acceleration signals at different positions were obtained, and the major sources of noise and vibration were identified. Base on these results, modifications were proposed for different noise sources. The results provide a reference for the optimal design of vehicle motor and transmission system and the internal noise control.
A Novel Image Fusion Method Using Beamlet Transform and Graph Cuts
Authors: Zhang Guang Ming , Cui Zhi Ming
Published: February 2011

Graph cuts as an increasingly important tool for solving a number of energy minimization problems in computer vision and other fields, meanwhile beamlet transform as time-frequency and multiresolution analysis tool is often used in the domain of image processing, especially for image fusion. By analyzing the characters of DSA medical image, this paper proposes a novel DSA image fusion method which is combining beamlet transform and graph cuts theory. Firstly, the image was decomposed by beamlet transform to obtain the different subbands coefficients. Then an energy function based on graph cuts theory was constructed to adjust the weight of these coefficients to obtain an optimum fusion object. At last, an inverse of the beamlet transform reconstruct a synthesized DSA image which could contain more integrated accurate detail information of blood vessels. By contrast, the efficiency of our method is better than other traditional fusion methods.
A Design of Remote Control System for Robot Based on Internet
Authors: Zhao Jun Wei , Zhang Tian Cheng , Chen Guo Qiang , Li Yan Qin
Published: February 2011

Combining with some research achievements in remote control of robot at home and abroad, this paper analyzes general principle of it and designs a remote control system for robot. The system can be realized through network, and it utilizes browser/server mode and applies CGI program which is written in VB. Through the CGI program, the communication between server and browser is realized. Not only does the design describe the control process, but also it defines a scheme of the remote control system which determines integrated structure. Besides, a user interface which includes user permissions and function modules is developed. Finally, a preliminary control test for system is taken and the performance of the system is analyzed.
An Approach for Security Assessment of Transmission Grid Concerning the Influence of Indices Balance
Authors: Mao An Jia , He Jin
Published: February 2011

Modern power system has been gradually developed into a complex system with the features of multi-level structure, multi-time scale, a variety of control parameters, wide-area, open, uncertainties, non-autonomous and it is difficult to indicate the security level of power system by a single index. Therefore, power system security assessment based on theory of comprehensive assessment is developed rapidly in recent years. However, traditional comprehensive assessment method considers few about the balance of the indices, when there are great differences between the value of the indices, it is easy to take place the phenomenon that the small indices has been “submerged”, which will influence the rationality of the comprehensive evaluation result. In this paper, a comprehensive assessment model which considers the influence of the index balance is established. By introducing the balance coefficient, the model can amend the original judgment matrix and the weight obtained by traditional AHP method. Since the coordinated and balanced situation of the indices have been reflected in the evaluation process, the results of the assessment model proposed in this paper has more scientific nature and more credibility. Finally, an example is provided to validate the model in this paper.
Budget Estimate Management Information System for Blast Furnace Coal Powder Injection Project
Authors: Wang Yong Ming , Han Fei , Li Jiang Tao
Published: February 2011

Rapid, accurate and standardized budget estimate is the basis of project bidding, which involves a lot of data information verification and charts. At present, many companies often use the traditional manual method in project budget estimate, which is time-consuming and error-prone. Aiming at the requirements of blast furnace coal powder injection project bidding, this paper developed a blast furnace coal powder injection project budget estimate management information system by using Visual Basic 6.0 and SQL Server database technology, introduced its overall function modules and the key technologies, including system role represent and use case analysis, the system data storage methods, report forms customization methods and so on. Finally, an applied case is given, which can make the project budget estimate conveniently, quickly and accurately, and can reduce the labor intensity of project information management.
Hierarchical Colored Petri Nets Based Modeling and Analyzing for Web Service Composition
Authors: Zhu Lian Zhang , Sun Lian Xia
Published: February 2011

Web services composition is a complex and error-prone process, but there are no effective verification mechanisms among the existing composition specifications. Based on the semantics of web services ontology language OWL-S, a formal description and modeling method using Hierarchical Colored Petri nets(HCPN) for web services composition processes is proposed. In the method, the control and data flow information of web services composition process model which is described by the OWL-S can be transformed into HCPN model, with the ease of simulation and verification. On the other hand, the state space explosion problem can be transfered into the memory limit of computer which is not a serious problem now. With the help of CPN-Tools, the established HCPN model can be simulated dynamicly, the dynamic behaviors of the model can be obtained, and the correctness and effectiveness of web services composition can be verified. The method can be used to analyze and verify complex systems. An instance of hospital services is given to illustrate the modeling and analysis of the service composition process with HCPN.
Knowledge Application Model for Manufacturing Process
Authors: Lai Hong Feng , Wu Kuang Yao
Published: February 2011

This paper proposes a categorical foundation for integrating various types of manufacturing knowledge in manufacturing systems. The composing procedures of overall system can be explained by pushout of category theory. The purpose of this paper is to resolve the issue involves in sharing and coordination for modeling knowledge application in distributed manufacturing systems. We will propose a method for modeling discrete event system. The mathematical foundation lies in assuring that the constructed models have mathematical properties, e.g. consistency and completeness, and overcome the drawbacks of traditional function models, since it can show not only the static structure but also the dynamic semantics. The categorical notations and properties are expressed by an example of flexible assembly workcell.
An Ant Colony System Based Method for Edge Extraction
Authors: Gao Shi Wei , Cao Wei , Zhang Chuan , Wang Dong Liang
Published: February 2011

This paper proposes a novel application of ant colony system for edge extraction which the food definition is combined the idea of the gradient and the multi-scale. After building the food map, ant colony system is employed to obtain the maximal food response, which makes the method adapt to strong or weak edge basing on the local extremum instead of global one. With the feedback of the pheromone and prior directional searching, the simple ants achieve ideal edges based on the direct response and the mutual cooperation. Furthermore, the method can work well in both gray level images and color images. Finally, the experiments prove that edge extraction result of the proposed method is better than other intelligent ones and traditional ones, and it is not sensitive to the noise.
Modeling the Elasticity of Oriented Electrospun Nano-Fibrous Scaffold
Authors: Yuan Bo , Liu Qun Feng , Lin Cai , Chen Xiao Feng
Published: February 2011

A micromechanical model is constructed for the elastic modulus of nano-fibrous scaffold. The nano-fibrous scaffold was obtained using electrospinning method with polymeric materials, and was supposed to be created with linear elastic strain rods that are straight in the range of rod length. Statistical theory was introduced to model the random distribution of fiber segment length and the percolation effect was also studied. Model predictions were verified using experimental data. This model can be used to study the relationship between the elastic modulus of the scaffold with respect to the fiber concentration, fiber diameter and fiber orientation.
A HSEG Model for Bending Size-Dependency of Polymer Nanofiber
Authors: Yuan Bo , Liu Qun Feng , Lin Cai , Chen Xiao Feng
Published: February 2011

In this paper, a high order strain gradient (HSGE) model is constructed to predict the bending size dependence of the elastic property of nanofibers under three-point tests. The model can be applied to explain the size dependency in bending test for polymeric nanofibers.
Study the Residential Land Demand by Ridge Regression and Multiple Linear Regression
Authors: Sun Hui , Chen Yang Yang , Fan Zhi Qing
Published: February 2011

Land is an important natural resource for human’s living and developing. Residential land demand forecast is the core content of urban land use planning. To improve the forecast accuracy, we fully considered the influencing factors and had chosen urban population, GDP, fixed asset investment, and real estate sales as the main influencing indicators. Here we use the Ridge Regression Method to determine the linear relationship between the variables, and supplemented by multiple linear regression. We chose Tianjin as the target city to calculate the residential land demand. The results show that the method is simple, easy, and suitable for urban residential land demand prediction.
The Application of Binocular Visual Theory in the Depth Measurement on Castings Defect
Authors: Han Jian Ning , Wang Ming Quan
Published: February 2011

In nondestructive testing, in order to avoid the processing waste and repair the defects, the accurate location of the inner defects of components has been used to determine the danger of defects, which is very helpful to eliminate the workpiece as soon as possible. In the paper, the theory of binocular vision has been successfully applied to locate the inner defects accurately in the nondestructive testing field. Firstly, a simple and effective mathematical model has been built. Secondly, the simulation method has been used to verify the model. At last, the error theory has been applied to analyze the error, which would have effect on the test result. The most direct and effective method with high precision has also been proposed. It has been proved that the method has high precision and great simplicity to design. Through the X-ray image, the method could also been used to locate the depth information of the inner defects in metal casting, which would provide a good solution to the DR and CT deficiency.
DOM-Based Multi-Factor Web Information Extraction Study
Authors: Zhang Shun , Chen Xing Shu , Tan Jun
Published: February 2011

With the development of Internet, web page is still the main form of network information transmission. The number of web pages is growing at the rate of 10 million a day, and also the complexity of web information itself, which all make it difficult for the theme search engines to search information rapidly and accurately. Therefore, higher requirements are put forward to web information extraction. In this paper, a DOM-based multi-factor web information extract Algorithm (DMWE) is proposed, which can extract theme information rapidly and accurately.
Plastic Deformation and Surface Recrystallization of Cu-4 Mass%Zn Alloy under Instantaneous Extrusion and High Speed Friction
Authors: Yin Jun Hui , Zheng Jian , Jia Chang Zhi , Ye Ming Hui
Published: February 2011

As a special hot-work progress, artillery shooting test was put in practice, and rotating band specimen of Cu-4 Mass%Zn alloy was prepared. The mesostructure and microstructure evolution of the alloy under instantaneous extrusion and high speed friction were observed by optical microscopy (OM) and scanning electron microscopy (SEM). Severe plastic deformation (SPD) and dynamic recrystallization phenomena were researched. The analysis results are as follows. At the beginning of SPD, under the instantaneous compression, the surface layer of alloy became fibrous tissue with the phenomena of work-hardening. With the plastic deformation continue, temperature of alloy arising rapidly under the high speed friction. Recrystallization occurs within the outermost part of fibrous tissue due to heating, so subgrains gradually become homogeneous equiaxed grains. In addition, SPD has little effect on the inner tissue, which is full of equiaxed grains still. Between equiaxed grains and fibrous tissue, there are many oblique strip grains which formed by radial extrusion stress , tangential slip stress and axial sliding stress .
Research on Statistical Process Control of Packaging & Printing Quality Management
Authors: Xiao Ying Zhe , Huang Ya Nan
Published: February 2011

This paper states not only the development course of quality management but also the actuality that the packaging & printing enterprise confronts. In addition, it explains the necessity of applying SPC. The first, it is discussed and studied the basic tool of SPC-control chart for statistical process. Based on this way, -R control chart is used to analyze and control the overprint precision. According to these control charts, the spot staffs can find the deficiencies in the quality control itself by finding the correlative process fluctuation and the slow variation in time. In addition, SPC provides objective bases for the quality management personnels to assess semi-products or products quality.
A Web Data Mining Algorithm Based on Weighted Association Rules
Authors: Lv Xiao , Li Yong Jie , Lu Xu
Published: February 2011

Association rules mining is attracting much attention in research community due to its broad applications. Existing web data mining methods suffer the problems that 1) the large number of candidate itemsets, which are hard to be pruned, should be pruned in advance. 2) the time of scanning the database, which are needed to scan transactional database repeatedly, should be reduced. In this paper, a new association rules mining model is introduced for overcoming above two problems. We develop an efficient algorithm-WARDM(Weighted Association Rules Data Mining) for mining the candidate itemsets. The algorithm discusses the generation of candidate-1 itemset, candidate-2 itemset and candidate-k itemset(k>2),which can avoid missing weighted frequent itemsets. And the transactional database are scanned only once and candidate itemsets are pruned twice, which can reduce the amount of candidate itemsets. Theoretical analysis and experimental results show the space and time complexity is relatively good, Meanwhile the algorithm decreases the number of candidate itemsets, enhances the execution efficiency.
Virus Evolution Based Gene Expression Programming for Classification Rules Mining
Authors: Wang Wei Hong , Du Yan Ye , Li Qu
Published: February 2011

Gene Expression Programming(GEP) is a novel and accurate approach for classification. With the shortcoming of GEP, it often falls into the local optimums. In this paper, we introduce the virus evolutionary mechanism into GEP, with the infection operation of virus population, the diversity of the host population is increased, and the system is much easier to jump out of the local optimums, and much faster to obtain better results. Experiments on several benchmark data sets show that our approach can get close average accuracy and much better best accuracy compared with available results. What’s more, the average execution time is largely decreased due to smaller population size and maximum generation.
Effects on Locomotive Diesel Engine Performance by Selecting Solenoid Valve Parameters
Authors: Li Ming Hai , Jiang Feng
Published: February 2011

Solenoid valve is the key component to determine the performance of electronic fuel injection system for the diesel engine. By theoretically analyzing the characteristics of solenoid valve driver, we found out that one of the factors that affect the closing and opening speed of solenoid valve is drive current. In this paper, GT-Flow software is used to simulate and analyze the drive current, and come to the optimal combination of current. The selected drive current is used to analyze the emission performance of 16V265H diesel engine, to determine the best advance angle for fuel supply, and to compare the simulation results with the experimental values.
Effects of Chlorine on Aluminum Refining: A Review and an Ab Initio Molecular Dynamics Study
Authors: Liu Yan , Sun Bao De , Wang Jun , Dai Yong Bing
Published: February 2011

A comprehensive introduction of current aluminum refining technology is reviewed in this work especially the effects of chlorine on refining process is discussed. The mechanism of chlorine on improving hydrogen diffusion has been studied by ab initio molecular dynamics calculations and we obtain the diffusivity of hydrogen in liquid aluminum which is in agreement with the experimental data. It can be concluded that the diffusion of hydrogen in aluminum melts can be enhanced on the presence of chlorine.
An Improved KPCA Method of Fault Detection Based on Wavelet Denoising
Authors: Zhao Xiao Qiang , Li Zhan Ming
Published: February 2011

For complicated nonlinear systems, the data inevitably have noise, random disturbance, Traditional kernel principal component analysis (KPCA) methods are very difficult to calculate the kernel matrix K for fault detection with large sample sets. So an improved KPCA method based on wavelet denoising is proposed. First, wavelet denoising method is used for data processing, then the improved KPCA method can reduce calculational complexity of fault detection. The proposed method is applied to the benchmark of Tennessee Eastman (TE) processes. The simulation results show that the proposed method can effectively improve the speed of fault detection.
A Continuous and Reversible LOD Algorithm for Highway Terrain
Authors: Fu Xin Sha , Mo Si Quan , Li Hai Feng
Published: February 2011

In view of the inherent contradiction between mass data and real-time browsing in Highway 3D Visualization System, this paper proposes an edge folding algorithm for weighted average elevation base on vertex degrees, which will improve the model simplification effective. In the process of building a continuous LOD model, the algorithm uses mesh line to blocky process the terrain model to eliminate the adverse effects of long and narrow triangles, adopts Hoppe’s reversible progressive meshes construction algorithm to build grid-based LOD terrain model of continuous reversible, finally adopts LOD scheduling algorithm based on viewpoint, realizing multi-resolution terrain display of continuous reversible.
Simulation on Combustion Process of 16V240ZJ Diesel Engine
Authors: Wang Juan , Wang Feng , Li Ming Hai
Published: February 2011

Three-dimensional computation of spray and combustion in 16V240ZJ diesel engine was performed by CFD numerical simulation tool FIRE. Because of the unceasing change of the temperature and the mixture in the cylinder, traditional performance-prediction method can only supply the limited information. The appearance of numerical simulation brought a bright future for the design and development of the new diesel engine. Combustion is an extremely complex process ,involving flow field, fuel injection and various combustion reactions. By calculus simulation, we have a thorough understanding of the combustion process of 16V240ZJ diesel engine. Through the flow field and concentrative analysis in the cylinder, the effect of advance angle of fuel on combustion process and formation of NOx and soot was investigated. The results show that the advance angle of fuel has a great effect on spray atomization and fuel-air mixture, and consequently influences the combustion and emission. By simulating , we can get the optimal advance angle of fuel for 16V240ZJ diesel engine is 15°BTDC, namely 345°CA, at which, the emissions are fewer ,and the efficiency is better .The CFD simulation has a direct value for optimizing the chamber’s structure and improving the combustion system.
Simulation and Analysis of a Motorcycle Engine Production Cell
Authors: Zhang Xiao Dong , Zhao Dong Fang , Xie Xun De , Yu Tian
Published: February 2011

The performance of production cell for motorcycle engine parts is critical for the competitive capacity of motorcycle products. In order to meet the maximum beneficial result with minimum cost, simulation approach is applied to find the best improvement scheme of the production cell. Performance indicators including rate of comprehensive utilization of equipment and rate of utilization of workers are established. Two different production schemes are analyzed based on work study. Flexsim simulation software was used to simulate and evaluate the schemes. The comparative simulation results show that simulation provides an effective way to find the best improvement scheme by evaluating overall performance of the production cell, instead of partial performance evaluation by traditional work study methods.
Design and Performance of an Asphalt Pavement Snow Melting System
Authors: Chen Ming Yu , Wu Shao Peng , Zhang Ji Zhe , Pan Pan
Published: February 2011

Asphalt pavement can be used in solar energy harnessing, by means of solar collector developed in heating and cooling the adjacent buildings, as well as keeping the pavement ice-free directly. In the light of the actual situation of preparation and formation of a larger asphalt concrete slab, an experimental method and evaluation system for asphalt pavement snow melting was designed and constructed. The feasibility of snow melting using asphalt solar collector was verified, and the effect of the heat exchanger on the temperature distribution was quantitatively tested The results indicated that although the entire snowmelt time is longer than expected, it is acceptable for us to use asphalt solar collector for snow melting, especially, low temperature water about 25°C is used for snow melting. Besides, the melting process of ice and snow generally includes three phases: the starting period, the linear period and the accelerated period. The snow melting system is controlled to maintain the asphalt pavement surface temperature of 3 to 5°C which is sufficient to prevent freezing of the road.
Warehousing Management Based on Multi-Agent
Authors: Zhang Yun , Zhang Yan Lian
Published: February 2011

This paper introduced Agent technology in the warehousing management in China, by taking advantage of its characteristics such as autonomy, reactivity, sociality and so on, and defining the interaction and cooperation mechanism between different Agent to achieve seamless connection between enterprises, so as to reduce or even to eliminate the inventory, supply viable idea and method of warehousing management for enterprises.
The Finite Element Analysis of FOPS for the Loader
Authors: Zhang Xin , Zang Meng , Liu Xiao Zhe
Published: February 2011

The finite element analysis method of falling-object protective structure (FOPS) for the loader is presented in this paper. Taking FOPS for CL958 type loader as an example, this paper builds the analysis model in ANSYS, obtains the displacement of the load center and the maximum deformation of FOPS caused by the impact load and proves the safety by the drop test. It provides the theoretical basis and design principle for the optimization design and reliability design of FOPS for the loader.
A Two-Stage of Relevance Feedback for Content-Based Image Retrieval
Authors: Wang Xue Feng , Chen Xing Su
Published: February 2011

In this paper, an effective relevance feedback (RF) approach is proposed in content-based image retrieval (CBIR). In the first stage, according to the user’s marked images, we get theirs predictive probabilities based-on Bayesian methodology which yields the posteriori of the images in the database; second via justify the weight of elements in each feature extracted of images, we refine features by logistic regression with positive features which get from the first stage. Then we rank the images according to the probability of the images in the database. The retrieval system is repeating until the user is satisfied with the feedback results or the target image has been found. Experimental results are shown to evaluate the method on a large image database in terms of precision and recall.