bluuebunny/crossref_metadata_2025 huggingface dataset:
A Pilot Study on the Relationship between Mechanical and Electrical Loss Tangents of Glass Powder Reinforced Epoxy Composites Post-Cured in Microwaves
Authors: Ku Harry , Wong Peter , Maxwell Andrew , Huang J. , Fung H. , Trada Mohan
Published: February 2011

The mechanical and thermal properties of hollow glass powder reinforced epoxy resin composites have been measured and evaluated in earlier studies. This basic but critical and important data have caused interests in the relevant industry in Australia. This study is therefore carried out to measure and evaluate the dielectric properties of the composites with a view to benefit the relevant industry. The relationship between the dielectric and thermal properties will also be studied and correlated. The original contributions of this paper are that samples post-cured in conventional ovens have higher electrical as well as mechanical loss tangent values than their counterparts cured in microwaves only. The storage modulus of all samples post-cured conventionally is higher than its counterpart. This is in line with the fact that they are softer material with lower glass transition temperatures. For all percentages by weight of glass powder, the glass transition temperature for the microwave cured sample was higher and the composite was stiffer; the opposite was true for the conventionally cured samples.
Global Warming and the Optimal Utilizing Method for Urban Rain-Flood
Authors: Yan Jun , Zhang Ju , Yang Xian Bo , Zhang Yu Hua
Published: February 2011

The acceleration of urbanization and global warming are making urban rain-flood disaster more ordinary and more serious recently. Summing up the characters of urban rain-floods, the mechanism of urban rain-flood disasters is analyzed. More ever, the main countermeasures to prevent urban rain-flood disasters are stated. Finally, the optimal method to utilize urban rain-flood comprehensively is put forward.
Multiphysics Fully-Coupled Modelling of the Electromagnetic Compression of Steel Tubes
Authors: Martínez-Valle Álvaro , Martínez-Jiménez José M. , Goes Patrick , Faes Koen , De Waele Wim
Published: February 2011

This paper presents the development process of a fully-coupled multiphysics finite-element model of electromagnetic tube compression, using the commercial software Comsol Multiphysics. The presence of a field concentrator inside the solenoid coil is numerically modelled. First, the results of free compression of a S235 steel tube are presented. Next, the joining process of a S235 steel tube with an internal workpiece of the same material is considered by inclusion of a contact algorithm in the model. Simulation results are compared with available experimental data. The application of the model to materials with a high resistivity, such as steel, enables to identify interesting phenomena and opens new possibilities for the industrial application of this high velocity forming technique.
Variation of Color in Zirconium Nitride Thin Films Prepared by Reactive DC Magnetron Sputtering
Authors: Klumdoung Pattarinee , Asanithi Piyapong , Chaiyakun Surasing , Limsuwan Pichet
Published: February 2011

This study is to evaluate a color variation of the zirconium nitride thin film, prepared from deposition technique of different N2 flow rates, ranging from 0.0 to 3.0 sccm, whereas the Ar flow rate is fixed at 3 sccm. The thin film was deposited on an unheated silicon wafer (100) via a reactive DC magnetron sputtering. The deposition current and deposition time were 0.6 A and 15 minutes, respectively. In the study, colors of film were changed from silver, gold, dark brown, brown, purple, pink to blue, when N2 flow rate further increase. Interestingly, the results indicate that gold color occurs in a very small interval of N2 flow rate.
Anomalous Effect of Strain Rate on the Tensile Elongation of Coarse-Grained Pure Iron with Grain Boundary Micro-Voids
Authors: Cao Xin Ming , Duan Qi Qiang , Li Xiao Wu
Published: February 2011

The plastic deformation and damage behavior of coarse-grained commercially pure iron containing grain boundary micro-voids were investigated at room temperature with different strain rates ranging from 1.0×10-5s-1 to 1.0×10-2s-1 under uniaxial tension. It is found that, with increasing strain rate, the lower yield stress and ultimate tensile strength increase normally, and abnormally the elongation increases as well. By comparison with the similar cases of other materials, the present phenomenon of anomalous strain rate effect on elongation is thought to be related to the pre-existence of GB micro-voids in the raw CP iron material. The extending deformation of GB micro-voids towards the tensile direction would contribute more to the total elongation, as the strain rate increases; this should be the most possible reason for the anomalous strain-rate dependence of elongation.
Mechanical Characterization and Wear Performance of WC – ZrO2 – Ni Cermets Produced by Hot Isostatic Pressing
Authors: Hussainova Irina , Smirnov Anton , Antonov Maksim
Published: February 2011

Microstructure analysis and mechanical characterization were performed on newly developed WC based and yttria stabilized tetragonal zirconia (ZrO2) doped cermets with nickel metal binder produced by hot isostatic pressing. The cermets have reached higher than 99% of theoretical density after processing at 1700 0C and 206 MPa for 1 hour. Zirconia has appeared to form agglomerates of about 1 µm and suppressed carbide grains growth. Hardness of zirconia doped materials was of the same magnitude and fracture toughness was slightly higher as compared to conventionally produced WC-Co hardmetals of the same metal binder content while wear resistance in conditions of erosion and abrasion in silica media is increased by two fold.
Structure and Rheological Behavior of Alkoxide-Based Precursors for Drawing of Metal Oxide Micro- and Nanofibres
Authors: Hussainov Medhat , Tätte Tanel , Paalo Madis , Gurauskis Jonas , Mändar Hugo , Lõhmus Ants
Published: February 2011

The aim of this study is investigation of the influence of the method of metal alkoxy precursors preparation on their rheological characteristics and spinability for metal oxide fibre drawing. The precursor samples were obtained from tin 1-butoxide Sn(OBu)4 as a result of aqueous (AQ) and non-aqueous (NAQ) (thermolysis) treatment. Small angle X-ray scattering (SAXS) data of precursors in the range of scattering vector modulus 0.07–5.3 nm-1 were recorded on a slit collimation camera KRM-1 by using Cu Kα radiation and NaI:Tl scintillation detector. Program system ATSAS [1] was used for calculation of the radius of gyration Rg and for 3D modeling of the cluster shape. The rheological characterization of samples was conducted with a help of a rotational rheometer Mars II (Haake, Karlsruhe, Germany) equipped with plate-and-plate test geometry (plate diameter 20 mm). The precursors studied in this work consist of the elongated particles of 3 – 5 nm in length and 2 nm in diameter for both AQ and NAQ prepared precursors. Rheological tests have proved that the solvent free precursors are typical non-Newtonian fluids. Precursors obtained with the help of NAQ treatment are more elastic as compared to those prepared with AQ procedure. Surface tension (ST) measurements show that the coefficient of ST of NAQ prepared precursor is 45% lower than that of AQ prepared one. Fibres with aspect ratio up to 10000 and diameter of 200 nm were directly drawn from the NAQ precursors at room temperature in standard lab atmosphere. AQ prepared precursor allows obtaining of the fibers of minimum 500 nm in diameter with maximal aspect ratio 1000.
Synergetic Effects between Al2O3 and HZSM-5 for NO Reduction by CH4
Authors: Ren Li Li , Pan Xiao Mei
Published: February 2011

Three different kinds of Al2O3 have been added to HZSM-5 for improving its activity towards selective catalytic reduction of NO with CH4 in the presence of excess of oxygen. Higher conversions of NO have been observed for all of the three mixed catalysts, the conversion of which were also found to be higher than that of each separate component of the catalysts. It was concluded that there exists a synergetic effect between Al2O3 and HZSM-5. The addition of Al2O3 can improve the catalytic activity of HZSM-5 by inhibiting the decomposing of NO2 to NO and accelerating the activation of methane. Adsorbed NO2 is then reduced by the activated methane or the intermediates formed from activated methane to N2 over the Brønsted site of zeolite.
Biaxial Gas-Pressure Forming of a Duplex Stainless Steel
Authors: Lee Ho Sung , Yoon Jong Hoon , Yoo Joon Tae , Cho Woo Hyun
Published: February 2011

By using biaxial gas-pressure forming method, it is possible to predict sheet metal forming behavior during hot forming process. The purpose of this study is to investigate the deformation behavior during equi-biaxial forming of a duplex stainless steel using conical and hemispherical dies. The present study constructs an analysis model to predict biaxial sheet forming behavior of duplex steel from results of tension tests. The results demonstrate that the developed technology to process design of high temperature gas-pressure forming by the finite element method can be applied to various types of components.
Electrodeposition of Copper-Indium-Diselenide (CuInSe2) Thin Films
Authors: Jeng Ming Jer , Lei Wen Kai
Published: February 2011

The electrodeposited CuInSe2 films were investigated in this paper. The deposition parameters of various solution concentrations, applied potential, pH value and complexing agent were examined to characterize film quality. The electrolyte solution was formed by mixing an appropriate proportion of copper sulfate, indium sulfate and selenium dioxide. Sodium citrate was used as complexing agent. Citric and sulfuric acids were used for adjusting electrolyte pH value. The experimental results revealed that the deposited and annealed CIS films have an atomic ratio of [Cu]：[In]：[Se] = 26.94：26.74：46.31. It is near to the stoichiometry of an atomic ratio ([Cu]：[In]：[Se] = 1：1：2). Unfortunately, this film has a poor adhesion problem. In order to overcome the adhesion problem, the triethanolamine and sodium dodecyl sulfate are used as complexing agents and wetting agents, respectively. A good adhesion was obtained. However, these additives result in a shortcoming of insufficient indium content in the formation film.
Explosion Cladding of CuSn Bronze to Malleable Iron
Authors: Turňa Milan , Ondruška Jozef , Nesvadba Peter , Behúlová Mária
Published: February 2011

Process of cladding CuSn bronze on malleable cast iron was studied. Characteristics of welded materials are described. Preparation of welded materials is outlined. Selection of suitable explosive is discussed. Design of welding assembly is illustrated. Welding parameters and conditions are given. Bimetals were fabricated. The quality of fabricated bimetals was inspected by ultrasonic defectoscopy, strains were measured with a 3D scanner and the microstructure was studied by optical microscopy and EDX microanalysis.
Fast Laboratory Test for Mechanism of Natural Nanoclay-Water Interaction
Authors: El-Sheikhy Refat , Al-Shamrani Mosleh
Published: February 2011

The relation between nanoclay and water effects is very complicated. Interactions of water and nano size type of silicate –aluminum is more complicated due to the special properties of nano material. A new simple technique is developed for studying the swelling phenomenon which represents the most important property of clay-water relation. The developed technique could find more aspects of water-clay behavior. The swelling property is not always only disadvantage with bad effects but sometimes has very important advantages. A comparison and differences with conventional clay-water are made. The results are very important in studying the nanocomposites and clay soil.
Amniotic Membrane Loading Epidermal Stem Cells Accelerate Impaired Wound Healing in Diabetic Rats
Authors: Zhong Qing Ling , Liu De Wu , Liu Fan Rong
Published: February 2011

Epidermal stem cells are essential in wound healing, but their amount and activity are decreased in diabetes which contributes to the impaired healing. This study evaluated the efficacy of amniotic membrane loading epidermal stem cells in the management of impaired wound in diabetes. Epidermal stem cells derived from SD rats were isolated, cultured, identified and labled with BrdU in vitro. The wound model of diabetic rats were established, then amniotic membrane loading labled BrdU epidermal stem cells were implanted to impaired wound. The results showed that wound healing rate in amniotic membrane loading epidermal stem cells was significantly higher than that in control groups 14 days after treatment. BrdU-positive cells in the wounds and newborn epidermis were visible. This indicated that amniotic membrane loading epidermal stem cells accelerates epidermal migration of wound margin and wound epithelialization in diabetic rats.
Experimental and Numerical Investigation of the Steel X210Cr12 Forming in Semi-Solid State
Authors: Behúlová Mária , Aišman David , Jirková Hana , Mašek Bohuslav
Published: February 2011

Semi-solid forming processes belong to the progressive technologies which can be exploited for the manufacturing products with complicated shapes and special material and utility properties. Semi-solid metal forming takes place at temperatures between solidus and liquidus combining the advantages of metal forging and metal casting processes. The paper is focused on the analysis of microstructures and phase composition of the X210Cr12 steel identified in the thin-walled products after forming in semi-solid state. Microstructure of the X210Cr12 steel after rapid cooling and solidification from semi-solid state is formed by quasi-globular grains of metastable austenite surrounded by carbides and fine eutectics. The fraction of metastable austenite in structure was found to be 96 % exhibiting the thermal stability up to the temperature of 500 °C. Along with experimental study, the numerical analysis of the material flow during a die cavity filling was carried out using developed 2D simulation model taking into account one-phase non-newtonian flow.
Quality Estimation of Bandwidth in a Network
Authors: Vani M.P. , Mythili N.
Published: February 2011

The available bandwidth (avail-bw) in a network path is of major importance in congestion control, streaming applications, quality-of-service verification, server selection, and overlay networks. In a packet network, the terms bandwidth and throughput often characterize the amount of data that the network can transfer per unit of time. Bandwidth estimation are also important for traffic engineering and capacity planning support. We propose a QoS-aware routing protocol that incorporates an admission control scheme and a feedback scheme to meet the QoS requirements of real-time applications. Results of our experiments show that the packet delivery ratio increases, and packet delay and energy dissipation decrease significantly, while the overall end-to-end throughput is not impacted, compared with routing protocols that do no provide QoS support. Nevertheless, the load is better balanced in the network, therefore the network capacity is not overloaded. The result in more stable routes and less control traffic as almost no reconstructions are needed.
Two Dynamic Propagation Problems of Mode III Interface Crack
Authors: Lü Nian Chun , Cheng Yun Hong , Wang Yun Tao
Published: February 2011

By the approaches of complex variable functions, two dynamic propagation problems of mode Ⅲ interface crack were researched. The problems considered can be very facilely changed into Riemann-Hilbert problem by means of self-similar functions, and analytical solutions of the stresses, displacements, dynamic stress intensity factors for the edges of mode Ⅲ symmetrical dynamix interface crack subjected to moving increasing loads Pt2/x2 and Px3/t2, respectively, were obtained by the methods of self-similar functions. After those solutions were utilized by superposition theorem, the solutions of arbitrary complex problems can be readily attained.
CH4 and CO2 Detection by Using Carbon Nanotube-Based Sensors
Authors: Firouzi Amin , Sobri Shafreeza , Yasin Faizah Mohd , Ahmadun Fakhru'l Razi
Published: February 2011

This research was carried out to investigate the effect of gas adsorption towards the electrical resistance of carbon nanotubes (CNTs) thin film. CNTs were synthesized by Floating Catalyst Chemical Vapor Deposition (FC-CVD) method on quartz substrate at 950°C under methane gas flow rate of 150 Standard Cubic Centimeters per Minute (SCCM). Then, the electrical resistance of CNTs was measured by exposing the sensors to CO2 and CH4 gases operating at room temperature. The sensors showed high responses to the gaseous molecules. In the same experimental conditions, the recovery of the sensors was different for CO2 and CH4. It was also observed that the CNTs device behaves as a p-type semiconductor when exposed to gaseous molecules. The fabrication process was relatively simple and did not require special techniques.
Determination of Ascorbic Acid Based on Gold Nanoparticles-L-Alanine/GCE
Authors: Kuang Hai Yan , He Jia Hong , Xu Qiang , Song Zhong Rong
Published: February 2011

A Gold nanoparticles-L-alanine modified glass electrode has been successfully fabricated by using layer-by-layer self-assembly technology and used for determination of ascorbic acid. First, the clean electrode was immersed into L-Alanine solution to acquire a L-Alanine film on the surface of GCE and dried at room temperature, then the gold colloid was dipped onto the L-Alanine film. The electrochemical behaviors of ascorbic acid at the modified electrode were investigated by cyclic voltammetry and current-time techniques. The results showed that the sensor produced high sensitivity and good stability to ascorbic acid and the current was linear with the concentration of ascorbic acid in the range of 1.20×10-5 to 1.60×10-4 mol/L with a detection limit of 1.00×10-5 mol/L.
Application of Fractional Model and Two Part Model to Evaluation on Mortgage Risk of Default Behaviour
Authors: Cheng Yueh , Wu Cheng Chung , Lin W Hsiang
Published: February 2011

This paper has debated between fractional and two part models in the context of default behaviour, applications where a large proportion of zero observations are typically found. The predictive capacity in this paper is to provider the direction of consideration and very good fit result to the behaviour of default for bank. From the perspective of practitioners, it could point of view the characteristics of borrowers of each variable would seem to be choosing in this paper. This paper also provides the simply looking at the extent to which policy decision of bank conclusions would differ depending upon the characteristics of customers’ behaviour consideration.
The Effect of the Element of Ni on the Crack of Manual SHS Welding Joint
Authors: Li Bao Feng , Xin Wen Tong , Liu Feng Wen , Zhu Hai Hua , Li Qi
Published: February 2011

It is studied in this paper that in the manual SHS Welding, the amount of Ni added affects the quality of the welding, especially in view of the cracks. When the proportion of Ni is between 1.57％～7.86％, welding external appearances are in good condition. No welding cracks can be spotted. The strength of tension also reaches an optimum condition. When the proportion of Ni is 7.86％. there are internal cracks by the examination of machine. When the proportion of Ni is between 10.2% and 15.7%, there are obvious external and internal welding cracks and the strength of tension is also the lowest, about 193MPa.
Polymerization of Methyl Methacrylate with a Novel Carbon Bridged Cyclopentadienyl Chromium Complex
Authors: Cheng Zheng Zai , Yan Xiao Chao , Nie Yu Jing , Lei Rui , Lin Su Su
Published: February 2011

A new carbon bridged cyclopentadienyl chromium complex of the type [ (C5H4)C(CH3)2 CH2(C5H4N) ]CrCl2 was prepared by treatment of CrCl3•(THF) 3 in THF solution with the lithium salt of ligand with cyclopentadienyl and pyridyl group. The chromium complex was characterized by mass spectra and elemental analysis. Activated by Al(i-Bu) 3, the chromium complex displayed a very high activity for methyl methacrylate (MMA) polymerization. After 18 hours, 85.49 % MMA was converted to polymethyl methacrylate (PMMA) with a viscosity average molecular (Mv) of 328000 at 60 °C at MMA/ Al(i-Bu) 3/chromium complex of 2000:20:1 in MMA bulk. The high conversion of MMA and high molecular weight of PMMA are the cause of the unique stable active site formed by the new chromium complex and cocatalyst.
Phonon Modes in AlGaN Alloy with AlGaN/GaN MQW Interlayer
Authors: Zhou Jin , Jin Yu Feng , Dai En Guang , Yang Zhi Jian , Shen Bo
Published: February 2011

500nm AlGaN thick layer with AlGaN/GaN MQW interlayer was grown on sapphire substrate for UV detector and resonant tunneling diodes by MOCVD equipment. We were strongly interesting in the stress information of QW. There are a big mismatch of lattice between AlN and GaN.The growth of thick and high quality AlGaN is difficult task. AlGaN/GaN MQW layers were designed to relax the big mismatch stress. Many researcher focused on the stress relax mechanism for the growth of AlGaN alloy. The stress in QW can change the band gap structure and carrier contents of polarize induced charge. Raman spectra were a useful tool to observe the stress of semiconductor materials without damaging the sample. Using 514nm green laser, we only obtained the phonon modes of GaN. So applying 325nm Ar ion laser, we can observed the phonon modes spectra of both AlGaN and GaN layers. According to resonance conditions, the phonon modes of 789.74 cm-1 was origin from AlGaN alloy layer. The phonon modes of 740.89 cm-1 and 575.06 cm-1 were origin from GaN layer. Compared to other results, GaN layer was compress strain. We determined that AlGaN/GaN MQW interlayer relaxed strain stress from lattice mismatch, and phonon modes were clearly observed.
A Kind of Improved RED Algorithm of WSN Oriented to Self-Similar Traffic
Authors: Wang Yu Jiao , Lin Hai Yun
Published: February 2011

Active queue management algorithm works at network routing node. It notifies terminal system control transmission rate in advance with discard or mark packet before buffer queue overflows, so as to avoid congestion. Aiming at characteristics of wireless sensor network (WSN) and based on introduction of traditional RED algorithm, the paper introduced H parameter to represent traffic similarity to original linear relationship between packet loss probability and average queue length to form the non-linear relationship related to self-similarity. Then a kind of improved RED algorithm of WSN oriented to self-similar traffic was proposed. The detail implementation flow was also provided. Simulation based on OPNET shows that the improved RED is superior to traditional RED algorithm in steady performance.
J-Integral Evaluation in Two Dimensional Interacting Cracks
Authors: Daud Ruslizam , Ariffin Ahmad Kamal , Abdullah Shahrum , Ismail Al Emran
Published: February 2011

This paper investigates crack interaction of multiple edge cracks in elastic solid finite body under pure Mode I loading. The cracks are located in parallel to another in 2D plate model. The stress intensity factors (SIFs) are determined based on strain energy release rate. The J-integral path independent is employed to study the interaction between cracks in regards to the effect of crack shielding and amplification of various cracks arrangement. The aim of present work is to test several numerical techniques reported in literature. J-integral approach are applied in 2D ANSYS finite element models subjected to different crack-width ratio (a/w) and cracks interval ratio (a/b). For validation, the results are compared to singular finite element approach and related analytical formulation. The results obtained by these methods are found in good agreement with singular finite element. Some discrepancies between analytical solutions are discussed. Nevertheless, since strain energy release is concern to characterize the near crack tip field, the J-integral method seems to be more applicable and accurate for interacting cracks analysis.
Flexible Synthesis of Heat Exchanger Network with Particle Swarm Optimization Algorithm
Authors: Zhang Xio Ling , Yin Hong Chao , Huo Zhao Yi
Published: February 2011

In this paper, the flexible synthesis problem for heat exchanger network(HEN) is formulated to a mixed integer nonlinear program(MINLP) model. The objection function of the model consists of two components: First, a candidate HEN structure has to satisfy flexible criterion during input span. Second, a minimized annual cost consisting of investment cost and operating cost is investigated. The solution strategy based on particle swarm optimization(PSO) algorithm is proposed to obtain the optimal solution of the presented model. Finally, a four streams example is investigated to show the advantage of the whole proposed optimization approach.
The Effects of Environmental Factors on the Pitting Corrosion of 304 Stainless Steel
Authors: Zhang Sheng Han , Tan Yu , Liang Ke Xin
Published: February 2011

The effects of environmental factors, such as pH and buffer capacity, on the pitting break potential (Ebreak) and protect potential (Eprotect) of type 304 stainless steel was investigated by cyclic voltammetry sweeps method. The buffer capacity and the concentration of non-aggressive anions in the solutions indicate some effects on the pitting initiation and repassivation of stainless steel. Nevertheless, the pitting Ebreak and Eprotect show a strong dependence on a parameter J as general environmental factor, which is defined as the product of concentration of aggressive anions and buffer capacity. Study pitting Ebreak and Eprotect of 304 stainless steel by environmental factor suggested a new method to investigate the anti-corrosion ability of iron base metal.
The Range Distribution of Nd Ions Implanted in Silicon Crystal
Authors: Qin Xi Feng , Li Shuang , Wang Feng Xiang , Liang Yi
Published: February 2011

Due to the need to reduce electronic device sizes, it is very important to consider the depth distribution of ions implanted into a crystalline target. The mean projected ranges and range straggling for energetic 200 – 500 keV Nd ions implanted in single crystal silicon (c-Si) at room temperature were measured by means of Rutherford backscattering followed by spectrum analysis. The measured results are compared with Monte Carlo code (SRIM2006) predictions. Our results show that the measured values of the mean projected range are good agreement with the SRIM calculated values; for the range straggling , the difference between the experiment data and the calculated results is much higher than that of .
Effects of Different Surface Modification to the Carbon Fiber Electro-Mechanical Response
Authors: Fang Xi , Zhu Si Rong , Li Zhuo Qiu , Lv Yong
Published: February 2011

The interface properties of carbon fiber(CF) within the composite material has a great effect to its functional characteristics. The work is focused on the research of CF electro-mechanical response after its surface modification using acetone and nitric acid oxidation. With characterization by XPS and SEM, there exist the various changes on the CF surface not only the chemical elements or chemical groups. With changing CF’s resistance under uniaxial tension, the CF has differerent electro-mechanical response to loading force. Through statistical analysis, the research shows the sensibility of CF to the electro-mechanical effect can be improved by the surface modification with acetone process or nitric acid oxidization.
Photocatalytic Activity of TiO2 Loaded on HZSM-5 Zeolite Modified by Ammonia Phosphate
Authors: Zhang Wen Jie , Li Ke Xin , Yu Yang
Published: February 2011

The ammonia phosphate treated HZSM-5 zeolite was used as support for TiO2 prepared by sol-gel method. Adsorption and photocatalytic activity of the zeolite, adsorption of the loaded TiO2, and the optimum TiO2 loading percentage were studied. The zeolite can concentrate methyl orange solution after adsorbing water and possesses no obvious photocatalytic activity. The solution reached its adsorption equilibrium after 20 min when using TiO2 loaded on HZSM-5. In the TiO2 loading range from 10% to 70%, the dye decoloration rate increased constantly from 20% to 36.2%. The activity of the TiO2 was enhanced after loading with the optimum loading percent of 70%. During the whole 180 min of irradiation, TiO2/HZSM-5 showed enhanced methyl orange decoloration activity.
A Study of Creative Artworks for Picture Books Colored Using Mixed Media and Computer-Aided Design
Authors: Lin Rui Lin
Published: February 2011

This study aimed to perform a case study of the artworks colored using mixed media by applying qualitative methods. The teacher and the students wrote the story and completed the storyboard through interactive discussion teaching. With the knowledge of the properties of current painting papers and media used for coloring, the teacher was able to guide the students to choose paper of better quality, and select proper mixed media to create their artworks, so that the picture book could be richer and more delicate. Furthermore, documentary analysis was performed with current documents related to picture books to provide the students references for their artworks. Finally, the students were guided to process their graphs and arrange the layout using computer software, to complete a picture book artwork colored using mixed media by both hand-drawing and computer graphing and this study.
Open Esql Micro Focus Net Express Embedded in COBOL
Authors: Sumathi P. , Vani M.P.
Published: February 2011

Book issue and return tracking system is a database application. The main aim of this paper is to do all kind of transactions and to store the information of books and students and to retrieve all information and students should make use of all the books present in the library thereby various department students should get satisfaction. Here the code is generated making use of OpenESQL using Micro Focus Net Express 5.1 embedded in COBOL The Open ESQL is an interactive tool that makes it easy to Prototype SQL SELECT statements and test them against database Design SQL INSERT, UPDATE, and DELETE statements It inserts SQL queries into COBOL code and creates auxiliary code into COBOL code.
Effects of Strong Carbide-Forming Elements on Low Temperature Salt-Bath Chromizing
Authors: Ye Jin Ling , Ye Feng
Published: February 2011

The microstructure, phase structure, white layer thickness and chromium concentration, microhardness of the chromized layer of T10 steel and 3Cr2W8V steel by low temperature salt-bath chromizing with plasma nitriding are contrasted. The chromizing process is investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD). Results show that the strong carbide-forming elements (Cr, W, V) obstruct the diffusion of chromium and carbon, the white layer thickness and microhardness, surface chromium concentration of the chromized layer are reduced. A chromized layer of T10 steel with average 7.3μm in thickness, 84.47% in surface chromium concentration and 1300HV-1400HV in microhardness is formed on the substrate by chromizing at 610°C for 6h, as compared to the chromized layer of 3Cr2W8V steel with average 3.3μm in thickness, 74.27% in surface chromium concentration and 1200HV-1300HV in microhardness.
Signed Graph Model of Equipment Supporting Supported by Space Information
Authors: Zhang Han Feng , Lu Yu , Chen Li Yun , Ma Yi
Published: February 2011

According to the method of signed graph modeling, the paper ascertains parameters of equipment supporting system supported by space information, draws the signed graph of equipment supporting supported by space information, and establishes the system model of equipment supporting supported by space information. The paper defines several conceptions which reflect space information system’s influences on equipment supporting efficiency, uses MATLAB software to making a simulation on numerical value, and gets the extent of space information system’s influences on equipment supporting efficiency, which provide the theory guide and reference for equipment supporting in information warfare.
Research on Qualitative Simulation of Weapon Equipment Wasting in a War
Authors: Chen Li Yun , Zhang Han Feng , Lu Yu , Huang Kai
Published: February 2011

There are many factors which can influence the weapon equipment wastage in a war, and it is very difficult to forecast the wastage of weapon equipment. A wartime weapon equipment wastage synthesis model based on qualitative simulation is brought forward, and the qualitative reason of weapon equipment wasting in wartime is conducted based on Kuipers qualitative simulation theory. Then the qualitative variety chart of weapon equipment wastage is given. Simulation result accords with the fact, therefore, the method can provide the quite important qualitative information for the commander of equipment supporting.
Study on the Bayesian Networks Decomposition by the Improved Multi-Linked Tree Algorithm
Authors: Wang Zhao Wei , Zhou Jian
Published: February 2011

Aiming at the difficulty of Bayses Network construction, the C_BN (Bayesian networks for quality problem case) decomposition path and level control method is discussed. And then the implementation algorithm using the improved multi-linked tree is carried out. The result of decomposition is standardized and the knowledge base for SBN (sub Bayesian networks) is built which is the foundation for the C_BN reuse in Bayesian networks construction.
Research on Virtual Learning Community Based on Physical Knowledge
Authors: Li Meng Long , Peng Hong Jian , Zhang Xin Kang
Published: February 2011

Based on "Information Technology Curriculum Resources Development" project and their own experience of teaching and learning, knowledge management, physical education-based virtual learning environment built for a more in-depth theory and practice of verification. In this article, the concept of physical education to become a leader in knowledge management, virtual reality user experience possible, emphasizing the virtual learning environment, the flow of knowledge and human interaction, proposed to build a virtual learning environment, the key success factors: culture, management, protection technology and knowledge precipitation, knowledge sharing, learning and application of knowledge, knowledge innovation, knowledge of the formation of benign drive the wheel.
Color Image Segmentation Based on Self-Organizing Maps
Authors: Geng Rui
Published: February 2011

The colony intellectual behavior performed by many organisms in nature can solve various kinds of problems on scientific and technological research. Bees are a socialized insect colony, which perform different types of activities according to their different divisions of labor, and achieve information sharing and exchanges among the bee colony to find the optimal solution for problems. According to this characteristic, researchers have proposed the algorithm of bee colony for solving combinatorial optimization problems. In this paper, it will describe the implementation process of such an image segmentation algorithm, and the result shows that this method is a potential image segmentation algorithm.
The Influence on the Properties of Microporous Mullite of Adding Different Burning-Out Materials
Authors: Bi Yu Bao , Wang Hui Fang , Lu Wei
Published: February 2011

Mullite has low thermal conductivity, advanced volume stability at high temperature, and is suit to prepare lightweight refractories. The micropored mullite aggregates has been produced by using industrial alumina and natural silica as starting materials, adding some burning-out materials, then fired at 1350°C for 6h. The influences on the bulk density, pore size distribution and microstructure of microporous mullite of adding these burning-out materials, such as carbon black, coke, and anthracite have been investigated. The conclusions are that the influences on the bulk density and microstructure of micropored mullite aggregates are significant. These three burning-out materials have a similar effect for the pore size distribution. The microporous mullite aggregates has the smallest bulk density and more uniform microstructure by using anthracite as the burning-out material.
The Method of Round Image Matching Based on Log-Polar Transform*
Authors: Zhang Zhi Jia , Chen Jing
Published: February 2011

Traditional image matching methods are not proper for the situation of the angle rotation. Aiming at this problem, This paper proposes an round image matching method based on log-polar transform. Log-polar image transform can convert the rotation changes in Descartes coordinate to shift changes in log-polar coordinate, which had such trait as invariance to rotation. Results show that this algorithm based on log-polar transform can match the images with rotation changes, Compared with existing algorithms, the new algorithm not only had higher matching rate and stronger adaptability, but also can effectively solve matching problem under the circumstance of brightness changes, contrast changes or noise interferences.
Grid Resources’ Fuzzy Clustering Based on Mobile Agent
Authors: Guo Dong , Li Qiang , Zhang Meng , Guo Bing Xin , Hu Liang
Published: February 2011

To speed up grid resources’ clustering, this paper presents a grid resource fuzzy clustering model based on mobile agent. A fuzzy clustering task is decomposed into some parallel subtasks which then are distributed to some grid nodes for parallel processing by using mobile agents through B-shift algorithm so as to improve clustering efficiency. This paper implements grid resources’ fuzzy clustering based on mobile agent with Aglet platform, and evaluates the performances through simulation experiments. The experiments show that the clustering time of this method is shorter than that of center fuzzy clustering method.
A Real-Time Transport System for High-Resolution Measure Image
Authors: Zhang Feng , Ren Guo Qiang , Wu Qin Zhang
Published: February 2011

This document explains and demonstrates how to use SRIO interface in the real-time transport platform for high-resolution measure image. The raw CCD data is first captured in a FIFO implemented in FPGA, and then transferred from FPGA to DSP through the SRIO interface. When one frame image data is captured, it is displayed on the screen of PC computer.
Air Suspension Optimal Control Based on the Genetic Algorithm
Authors: Li Zhong Xin , Guo Ji Wei , Gao Ming Hong , Jiang Hong
Published: February 2011

Taking the full-vehicle eight-freedom dynamic model of a type of bus as the simulation object , a new optimal control method is introduced. This method is based on the genetic algorithm, and the full-vehicle optimal control model is built in the MatLab. The weight matrix of the optimal control is optimized through the genetic algorithm; then the outcome is compared with the artificially-set optimal control simulation, which shows that the genetic-algorithm based optimal control presents better performance, thereby creating a smoother ride and improving the steering stability of the vehicle.
Sensor Fusion Based on Strong Tracking Filter for Augmented Reality Registration
Authors: Li Xin Yu , Chen Dong Yi
Published: February 2011

Accurate tracking for Augmented Reality applications is a challenging task. Multi-sensors hybrid tracking generally provide more stable than the effect of the single visual tracking. This paper presents a new tightly-coupled hybrid tracking approach combining vision-based systems with inertial sensor. Based on multi-frequency sampling theory in the measurement data synchronization, a strong tracking filter (STF) is used to smooth sensor data and estimate position and orientation. Through adding time-varying fading factor to adaptively adjust the prediction error covariance of filter, this method improves the performance of tracking for fast moving targets. Experimental results show the efficiency and robustness of this proposed approach.
Scheduling a Pipelined Operator Graph of Bounded Treewidth
Authors: Li Shu Guang , Xin Xiao
Published: February 2011

Pipelined operator graph (POG) scheduling is an important problem in the area of parallel query optimization. A POG is a graph with vertices representing query operators that can run in parallel and edges representing communication between adjacent operators. The problem is to assign operators to processors so as to minimize the maximum processor load. We present a 2-approximation algorithm for the case where the operator graph has bounded treewidth.
Collision-Free Path Planning for Mobile Cranes Based on Ant Colony Algorithm
Authors: Wang Xin , Zhang Y.Y. , Wu Di , Gao Shun De
Published: February 2011

This paper presents the work done towards searching a collision-free path for mobile crane based on C-space in the complex 3D working environment. The crane is simplified into three degrees of freedom (DOFs) robot, each of which is represented as an axis of configuration space (C-space). In this paper, we propose an improved ant colony approach for crane path planning, which takes into full account of not only the factor of the shortest path but also the factor of safety. In this approach, we employ more complete heuristic information, introduce adaptive pheromone volatilization coefficient and pheromone penalty factors, and prevent ants from falling into trap and the stagnation. The reasonability and practicability of the proposed approach for automated path planning is verified by comparing the performances of the present approaches in the practice case, and the comparison results show that the algorithm can gain a relatively optimal solution in short time and have a great value of engineering application.
The Association Rules Updating Algorithm Based on Reverse Search
Authors: Chen Yu , Xu Wei Xiang , Liu Xu Min
Published: February 2011

This paper analyzed the existing association rules update algorithm IUA, found out that when the decision makers gave priority attention to the situation of maximum frequent itemsets, this algorithm cannot lower the cost of the database traversal to quickly access to the largest number of frequent itemsets. For the lack of the algorithm, an algorithm which is based on reverse search approach to update association rules is presented. The updating algorithm based on reverse search first generated all frequent itemsets of new itemsets. Then, it spliced the new largest frequent itemsets and original largest frequent itemsets for trimming, get the updated maximal frequent itemsets. This algorithm not only reduces the traversal times in the process of association rules updating, but also realized the priority access to the largest operation of frequent itemsets.
Research on the Framework of 4PL Based on GIS/3G/GPS
Authors: Lin Pei Guang , Ma Hui , Zhou Zhi Zheng
Published: February 2011

Information is the soul of the logistics, and the powerful logistics network is a prerequisite for the Fourth Party Logistics. Information network can control all aspects of the logistics supply chain, integrate the national logistics resources effectively, enhance the efficiency and reduce logistics cost. This paper proposes a logistics platform based on WebGIS/3G/GPS, which can share the attribute data and map data in high degree and realize distribute storage. It not only can change the dull attribute data into vivid graphics, but also makes the management and maintenance for massive data convenient and efficient, and control the logistics process accurately and timely. The implementation of the platform will maximize the advantages of the Fourth Logistics, strengthen control over the logistics process.
Modeling Web Service Behavior Based on Workflow Nets and Consume-Produce-Read Nets
Authors: Cao Guo Rong , Tan Q.P. , Wu Hao
Published: February 2011

To support automated service composition, adaptation and verification, there should be a formal model for web service behavior description. For the sake of accurately representing web service behavior, inspired by workflow nets and consume-produce-read nets, we propose a novel formal model for web service behavior description, which can not only describe the control flow, but also the data flow as well as the communication flow of the web service accurately. The model regards tokens, data and messages as control resources, data resources and communication resources and adopts completely different store-and-fetch strategies for each kind of resources respectively.
Damage Detection and Assessment System of Roads for Decision Support for Disaster
Authors: Qin Qi Ming , Ma Hai Jian , Li Jun
Published: February 2011

After the occurrence of significant natural disaster, the resulting damaged roads interrupt the rapid emergency response for disaster, and therefore, the disaster relief department is desperate for the destruction condition of roads in the devastated region, which can help make relief decisions and deploy rescue actions. In view of the practical needs of the disaster relief department and the objective fact that at present there is not any special, high automatic damage detection system of roads, we develop Road Damage Detection and Evaluation System (RODDES). Using the basic road data in GIS (Geographical information system) as the prior knowledge, the system extracts the pre-disaster and post-disaster roads from post-disaster remotely sensed imageries, and then detects the damaged regions and evaluates the destruction condition. This paper emphasizes the overall design of the system and the submodule design and their functions. The system is applied in detecting and evaluating the damaged roads in Wenchuan County, China and the experiment results show that nearly all producer’s and user’s accuracies of the road extractions and damage detections are above 75%, and it accurately evaluates the destruction condition of roads.
Study on Wood Drying Based on Neural Network and Expert System
Authors: Ren Hong E , Chen Long , Guo Ji Feng
Published: February 2011

Wood drying is a complicated non-linear process that is lagged,time-variable and coupling. For them,it is difficult to build up ideal drying model,which is corresponding to reality.The paper put forward the drying method of vacuum dehumidification.This drying method is based on neural network and expert system. The test results showed that the control method were better than traditional PID control.The control system could meet requirement of precision and a fast convergence and small overshoot.
A Global Calibration Method of Multi-Vision Sensors in the Measurement of Engine Cylinder Joint Surface Holes
Authors: Shi Yong Qiang , Sun Chang Ku , Wang Bao Guang , Wang Peng , Duan Hong Xu
Published: February 2011

The measurement of engine cylinder joint surface holes is directly related to the control of product quality and the follow-up assembly. CMM is widely used in this field but can not meet the inspection requirements of automation, rapidity and Online testing. In this paper, a new measurement scheme based on the combination of multi-vision sensors is proposed. The global calibration method is focused on and a new dedicated calibration target is designed. The whole process of the system global calibration can be accomplished quickly through single imaging. The experiment results show that the method is feasible and with high precision. The method mentioned above can satisfy the engine production line requirements of intelligence, rapidity, high precision and low cost.