bluuebunny/crossref_metadata_2025 huggingface dataset:
Role of Risk Manager for Online Risk Monitoring
Authors: Zubair Muhammad , Zhang Zhi Jian , Khan Salah Ud Din
Published: May 2011

With the passage of time, changes occur in components reliability and operating procedures, which continuously modify the configuration of Nuclear Power Plants (NPP). In order to handle these situations, living probabilistic safety assessment (LPSA) and risk monitoring (RM), play an important role in updating and maintaining level of safety. The objective of this paper is to highlight a newly developed risk monitor called Risk Manager that can be used to analyzing data.
Pulse Electrodeposition of α-Nickel Hydroxide with Flower-Like Nanostructure for Supercapacitors
Authors: You Zheng , Wang Xiao Feng , Shen Kui , Kong Xiang Hua
Published: May 2011

Nickel hydroxide electrodes with flower-like structure were prepared by pulse electrodeposition method. The samples were characterized by XRD, SEM and electrochemical measurements. XRD results show a typical characteristics of α-Ni(OH)2. SEM results show the morphology can be controlled by the ratio between on-time (Ton) and off-time (Toff). If Tonis constant to 10s, a flower-like structure will be obtained when Toffis bigger than 20s. Electrochemical tests revealed that the Nickel hydroxide electrodes prepared atTon=10 s and Toff= 30s not only has higher discharge capacity but also exhibits superior stability of capacity during charge-discharge cycling. The maximum specific capacitance in the first cycle is 737.74 F/g and their specific capacitance become stable after cycling 20 times.
Research and Practice of Measurement Technology on Roundness Error
Authors: Li Qing Hua , Tang Wu Sheng , Hou Yue Qian
Published: May 2011

The method of polar-center transformation was applied to the measurement of roundness error; the mathematic modeling of axial round error was established base on the method, to solve the roundness error on engineering. The application software was written base on the mathematic modeling; therewithal the system of measure round error consists of the software and same auxiliary equipment components, and was applied in practice, the result show that the mathematic modeling is correct. So the foundation was established to develop further high accuracy system of measure round error.
Molten Salt Combustion Synthesis of LiMn2O4 at 600°C: the Effect of Calcination Time
Authors: Liu Gui Yang , Guo Jun Ming , Wang Bao Sen , He Ying
Published: May 2011

Spinel LiMn2O4 were prepared by a molten salt combustion method at 600°C. The phase composition of the products was investigated by X-ray diffraction (XRD), and the electrochemical performance was tested by a coin-type self battery. XRD results presented that the purity and the crystallinity of the products increased with extending calcining time. Single phase LiMn2O4 could be prepared at 600°C for 6 and 12h. The ratio of lithium/manganese also affected the phase compositions of the products. The purity and crystallinity of the product with the molar ratio of Li/Mn=1.1/2 were higher than these of the product with the molar ratio of Li/Mn=1.05/2. The performance tests indicated that the electrochemical performance of the product prepared at 600°C for 6h is the best. The initial discharge capacity was 112.8mAh/g, and after 20 cycles, the capacity retention is 81.8%. The product with Li/Mn=1.1/2 had better electrochemical performance than the product with Li/Mn=1.05/2.
Numerical Analysis and Simulation of Vibration Characteristics of the Rotation Shaft with Mechanical Seal System
Authors: Zhao Wu , Yu Gui
Published: May 2011

This paper make the rigid support Jeffcott shaft-mechanical seal system as the research object. Firstly, it establishes the equivalent stiffness matrix and damping matrix of the rotation shaft with mechanical seal in the fixed-coordinate system, then derives the motion equation of the shaft with mechanical seal and applies the numerical simulation method to analyze and gain the vibration characteristics of the rotation shaft with mechanical seal system. Numerical simulation results show that: when the rotation shaft works at the speed of the subcritical speed, the trajectory of centre will change with the speed of the shaft. When the shaft works at the speed of the second supercritical speed, the trajectory of centre will be a limit circle. When the shaft works at the speed of the subcritical speed, the vibration response appear 1X, 2X, 3X and so on component of the vibration, and when Ω is 1/2, 1/3 and so on, 2X, 3X and so on component of vibration is biggest; when the shaft works at the speed of the second supercritical speed, 2X and 2X above component of the vibration is very small, even to zero, and then the trajectory of the centre is a limit circle. Whenhminis different, amplitude-frequency diagram of the X direction of the rotation shaft is different. Whenhminis bigger ,1X, 2X, 3X component of the vibration is bigger.
Methods to Reduce Thermal Conductivity Further of Plasma Sprayed Thermal Barrier Coatings
Authors: Zhang Hong Song , Liao Su Ran , Wei Yuan , Guan Shao Kang
Published: May 2011

This paper reviews the theory of thermal conduction of ceramic materials with the aim to reduce further the thermal conductivity of plasma sprayed thermal barrier coatings. Methods of reducing thermal conductivity of plasma sprayed thermal barrier coatings including seeking for alternative ceramic materials to 8YSZ, addition of some dopants, preparing nanostructured coating and double-ceramic-layer coating are advised. It is indicated that the combination of colouring plus nanostructured and double-ceramic-layer coating of new ceramic candidate materials of lower thermal conductivity should be an very important research direction in future.
Design on the Hospital Information System Growth Model Based on Ecology Theory
Authors: Shi Lu
Published: May 2011

The ecological theory is introduced into the construction of hospital information systems, focusing on the analysis of various factors in growth of hospital information system, on the basis of ecological theory ideas, the hospital information system studied as a living body, and the growth process is divided into budding of hospital information system construction, building the living environment of hospital information system, the growth stage of hospital information systems and development stage of hospital information system, the ecological chain of hospital information formed under the internal and external forces in the hospital, in order to build a complete growth model of hospital information system.
Stability of Evolutionary Equilibrium of Incentives for Teachers under Incomplete Information
Authors: Shi Lu
Published: May 2011

Higher education institution is chose as studying object to examine the incentive issue of teachers, which is of great theoretical and practical significance for the development of managing model for human resource for inspiring the latent of teacher. The asymmetric evolutionary game between higher education institution and teacher is studied based on imperfect information and the dynamic evolutionary equilibrium is also derived. Some cases are discussed in this paper and cooperation will be optimal selection if both sides will re-adjustment the distribution of benefits and this process of cooperation is an evolutionary process.
Service-Oriented Sharing Architecture for Mining Area Spatial Information and Key Techniques
Authors: Li Zhi Gang , Liu Hui , Yang Wu Nian
Published: May 2011

Mining spatial information sharing platform, as a new type of mining information management systems, will greatly enhance the level of the existing mine information management and their ability to support production operations. Based on the analysis of the current information sharing framework, a new mining information sharing platform which is service-oriented GIS is introduced. Then, this article describes three key techniques to achieve: the SOA-based GIS technology, metadata technology and spatial database technology. Finally, the paper talks about the research way for the development of mining area spatial information sharing architecture in the future.
Milling Characteristic of Plastic Profiles Manufacturing
Authors: Fan Ning , Ze Xiang Bo , Fu Xiu Li
Published: May 2011

Groove milling is an important working procedure in plastic profiles manufacturing. Rational milling parameters have great effect on machining efficiency and quality. The milling characteristic of plastic profiles is investigated by cutting experiments in the present paper. The cutting forces increase with the feed speed increase. The vibration occurs easily in transverse cutting because of the low stiffness of the plastic profiles. When the feed speed is large, the workpiece material would produce softening and daubing phenomena appears subsequently on the workpiece surface which affects machining quality. It is therefore that the milling parameters are determined by the avoidance of cutting vibration as well as daubing effect at the same time.
Lengthwise Detection of High Linearity Micromachined Gyroscope
Authors: Yao Feng Lin , Gao Shi Qiao , Liang Xin Jian
Published: May 2011

This paper introduces the basic working principle of capacitive micromachined gyroscope. A novel differential lengthwise capacitance comb detection structure is put forward. And it also analyzes the linearity of the differential lengthwise capacitive comb detection structure compares to the transversal detection. By measuring the scale factor, it verifies the high linearity of lengthwise differential capacitive detection structure. The linearity insures the linearity of conversing section of the detect system’s displacement and the capacitive variation. And this will greatly improve the linearity and stability of micromachined gyroscope.
Flatness Measurement of Steel Strips Based on one-Step Phase Shift Method
Authors: Xu Ke , Zhou Peng , Zhang Hui Yan
Published: May 2011

Flatness is a crucial parameter describing geometry of the steel strip surface. Measurement of flatness is very important for control of strip shapes. In the paper, the phase shift algorithm was introduced in measurement of flatness, and a new flatness measuring system based on the phase shift technique was developed. A new formula was derived to compute phase value from one single fringe image, which made higher spatial resolution. The system can avoid adverse effects caused by motion of the strip. Compared with present flatness measuring systems, the system presented in the paper gained more accurate results of flatness measurement.
Stability Control on Tractor Semi-Trailer during Split-Mu Braking
Authors: Zhou Shu Wen , Zhang Si Qi , Zhao Guang Yao
Published: May 2011

Handling behaviour of articulated vehicles combination is more complex and less predictable than that of non-articulated vehicles. It is usually difficult for drivers to maneuver a tractor semi-trailer during high speed emergency braking on split-mu road surface. Braking on this type of road surface, the conventional anti-lock braking systems will cause the vehicle deviate from the desired direction, or overmuch stopping distance. In this paper, a 3-dof of tractor semi-trailer model was used to produce desired yaw rates which were compared with actual yaw rates. An active front steering control and four-channel ABS were integrated to improve the tractor semi-trailer lateral stability while braking on split-mu road surface, which will produce maximum braking force. A full function tractor semi-trailer model was built and assembled in multi-body dynamics software, and the dynamic analysis was performed on split-mu road surface. The simulation results show that the integrated system can improve the tractor semi-trailer lateral stability under braking on split-mu road surface.
The Finite Element Analysis of Rolling Cone Enveloping Hourglass Worm Gearing Based on PRO/ENGINEER
Authors: Liu Chun Xia , Li Ping , Guo Xiu Mei
Published: May 2011

This paper is to analyse rolling cone worm drive model by the way of the finite element on sub-module Pro / MECHANIC of Pro / ENGINEER software and to get the stress distribution contour when the structure is on the static load.,then to sum up the stress distribution.
Single-Phase-to-Earth Fault Detection for High Voltage Transmission Line Based on Wavelet Analysis
Authors: Yang Zhuan , Dong Ai Hua
Published: May 2011

The voltage and current signals are transient signals with singularity and mutability when single-phase-to-earth fault occurs in high-voltage transmission line, of which the singular point and mutations parts contain rich fault information. However, wavelet analysis just has the nature of singularity detection and zoom properties, which is very effective in singularity analysis and singular points location. Based on the basic principle of wavelet analysis and signal singularity detection, simulation and detection of singularity of fault voltage and current signals in high voltage transmission line are made by db5 wavelet multi-scale comprehensive analysis method. The singularity detection and calculation program are accomplished in M-file form by programming in MATLAB, the simulation results show that db5 wavelet can detect the singularity of fault signal and determine the fault occurrence and end time fast and accurately. This method enhanced accuracy and reliability of single-phase-to-earth fault detection.
The Ultrasonic Signal De-Noising Method Based on an Improved Wavelet Threshold Function
Authors: Wang Qing Xuan , Dong Ai Hua
Published: May 2011

Making use of the advantages of the soft and hard threshold methods proposed by Donoho, this paper presents a deviation variable based on quadratic polynomial and differentiable improvement function, according to the characteristics of the underground water pipe leakage signal. In the paper we constructed the mathematical model of the function, utilized wavelet de-noising algorithm for the collected ultrasonic signal de-noising, compared the de-noising effect by means of the value of Signal to Noise Ratio (SNR) and Mean Squared Error (MSE). Results show that the new function has the better de-noising effect compared with the original threshold function.
Study on over-Constrained Locating and some Improving Measures in Die Casting Mould Design
Authors: Zhang Hong Feng , Xue Dang Qin
Published: May 2011

In the die casting mould design, there is some over-constrained locating which have serious influence on the manufacturing and life-span in some certain spots. In this paper, over-constrained locating of die casting mould structure was studied based on the example of slider block core pulling mechanism. Some improving measures in die casting mould structure design were presented in this paper. Changing the rigid connection between slider block and side core into floating connection, forced action can be applied on the side core by the slider block only from the necessary radial side instead of from other directions. Side core can be located according to the constraints of insert core hole. It simplified the machining and assembling of slider block core pulling mechanism. Thus, the manufacture cost of the die casting mould was also reduced.
Noncontact Magnetic Suspension of an Iron Ball Using Flux Path Control Mechanism
Authors: Sun Feng , Jin Jun Jie , Oka Koichi
Published: May 2011

This paper proposes a noncontact magnetic suspension of an iron ball using a flux path control mechanism. In this system, the suspension force is generated by a disk-type permanent magnet, and controlled by varying the angle of the permanent magnet that is driven by a rotary actuator. In this paper, first, the suspension principle is explained, and the prototype is introduced. Second, the characteristics of this system are examined by some basic experimental results. Third, a model is created, and the numerical simulation is carried out. Finally, the suspension experiments are succeeded using the prototype, and the results are shown and discussed.
Numerical Study on Flow Characteristics in Stepped Labyrinth Seal
Authors: Sun Tao , Zhang Yi , Wang Zhong Yi , Sun Hai Ou
Published: May 2011

Vapor seal is an indispensable component in steam turbine for economic and safe operation. The flow characteristics in vapor seal have a significant effect on the performance of vapor seal. Considering the flow field characteristics and engineering applications, the following work has been done: First, the models of the labyrinth glands with stepped teeth have been established through Computational Fluid Dynamics software Fluent. The full-flow simulation result is acquired. Second, based on the numerical results, the characteristics of the flow field in stepped labyrinth seal have been studied. At last, the best structure for stepped labyrinth seal is achieved.
Research on Miniaturized and Portable Impedance-Measuring Device for Structural Health Monitoring
Authors: Zhang Yu Xiang , Wen Dong Dong , Li Hua Cheng , Xu Fu Hou
Published: May 2011

Electromechanical impedance technique which based on smart material is a new method for structural damage detection, and it could be widely applied in structural health monitoring field. However, a very expensive and bulky analyzer is being used to measure the impedance, which is not practical for on-line system. Therefore, this paper developed a device that can measure the electric impedance using small modular electric components and reasonable circuit. Experiments are carried out to test the aluminum beam crack. Results indicate that the device can measure the electric impedance and detect the damage effectively. The proposed method provides a solution to miniaturize the impedance-measuring equipment and reduce the cost of measurement.
Factors Influencing the Preparation of Porous TiO2 Film Using PEG1000 as Template
Authors: Zhang Wen Jie , Chen Jin Lei , Liu Wen Bin
Published: May 2011

TiO2 film was deposited on glass substrate by a sol-gel process using PEG1000 as a template to prepare porous film. The influences of HCl and water amount, layers of the film, and the amount of PEG100 were investigated. The increase of HCl can slightly promote the photocatalytic activity of the film. When n(HCl):n(TEOT) is 0.2:1, the degradation rate is in its maximal value. The optimal water value can be obtained at n(H2O):n(TEOT)=3:1. The photocatalytic activity increases with increasing layer numbers. The five layers film has the highest photocatalytic activity, while the activity declines after further increase of film layers. The photocatalytic activity of theTiO2 film is enhanced with the addition of PEG1000 at first, and then excessive addition of the template leads to activity dropping.
Research on Quality Control of Electronics Products Based on Signal Game Model in the Supply Chain under Asymmetric Information
Authors: Ma Xin
Published: May 2011

Various participants in the supply chain must combine their own quality control and the relevant coordination decision-making with other enterprises to ensure they have strong competition position in the supply chain. Transactions among the manufacturers and retailers with the existence of asymmetric information in the electronic production system, as a result, the game will existent among them. In this paper, application of signal game theory to quality control of retailers are studied and the signaling game model of equilibrium to satisfy the three conditions are also be analysis.
Optimization of Non-Uniform Sensing Coverage for Wireless Sensor Networks
Authors: Zaeri Naser , Habib Sami
Published: May 2011

The success of wireless sensor networks (WSN) depends on two factors: 1) how well the service area is monitored by the WSN's capability to sense the intended phenomenon, and 2) the way that the WSN communicates the sensed phenomenon for further analysis by the service center with acceptable time duration. The simultaneous optimization for both the sensing and communication problems is a grand challenge, especially when the service area is harsh and it can't be accessed easily by human. In this paper, we have proposed a non-uniform constructive scheme to sense and communicate the service area through a cell-by-cell, where each cell is selected randomly and the cells may have different sizes. The experimental results demonstrate the feasibility of the non-uniform constructive scheme in selecting and placing sensors to sense and communicate over the service area with minimal uncovered area and minimal overlapped sensors.
Research on Monitoring of Machine Tools Based on Wireless Sensor Network
Authors: Sheng Zhong Qi , Dong Liang , Tang Chang Ping
Published: May 2011

This paper discusses the structure of wireless sensor network (WSN) and the key technologies for the monitoring of machine tools. Multi-sensor is used to monitor the acoustic emission and vibration signal during the manufacturing process of machine tools. Vibration signals and acoustic characteristics are extracted by using wavelet analysis. Based on the fusion of BP artificial neural networks and multi-sensor information, the monitoring of machine tool is carried out in the environment of wireless sensor network.
Study of Purification Effect to PM2.5 from Secondhand Tobacco Smoke in an Automobile
Authors: Liu Shu Sen , Li Si Ze
Published: May 2011

Secondhand tobacco smoke (SHS) in enclosed spaces is a major source of potentially harmful airborne particles. To quantify exposure to PM2.5 because of SHS and to investigate the interaction between pollutants from SHS and vehicular emissions, number concentration of PM2.5 were measured inside a moving vehicle under different ventilation conditions. Air purification was found to have a significant effect on PM2.5 in the cabins of vehicles. Purification can achieve higher and more consistent results in terms of protecting drivers from SHS while commuting on the roads. Moreover, air purifiers are economically and technically easier to implement than other chemical technologies currently in use. Because the study with the air purifier was conducted in only one vehicle, more vehicles should be tested with and without air purifiers to achieve a statistically robust conclusion regarding their performance.
CNC Manufacturing Applications of the Heat Resistant Super Alloys
Authors: But Adrian
Published: May 2011

In the paper are presents the results of CNC manufacturing applications. Material what was processed was Inconel 718 who is a heat resistant super alloys. Was presented the cutting tools insert, characteristics and methodologies haw to obtain much more productivity and in the same time, the cutting tool parameters to keep much more time possible the geometrical characteristics of the cutting tools. Was analyzed the wear and what are the most common type of wear who appear at this special applications. Using high technical metrology equipment was underline the structure and the value of insert wear.
Experimental Investigation of Rotary Ultrasonic Face Milling of K9 Glass
Authors: Zhang Cheng Long , Feng Ping Fa , Zheng Shu You , Wu Zhi Jun , Yu Ding Wen
Published: May 2011

K9 glass is regarded as one of the most difficult-to-machine materials due to its mechanical characteristics, which is known as an excellent performance optical material. In this paper, rotary ultrasonic face milling (RUFM) process is introduced into machining flat surface of K9 glass using right-angle diamond cutter for the first time. It studies the influence of process variables (spindle speed, feedrate, cutting depth, and cutting width) on cutting force and surface roughness through the single-factor experiments. The cutting force is measured by a KISTLER dynamometer, and the surface roughness is measured by a talysurf. The investigation also includes a comparison between RUFM and diamond milling. The experimental results tell that the RUFM process can significantly reduce cutting force, which inferred that RUFM can have less tool wear and longer tool life. It also shows that the surface roughness in RUFM of K9 glass is slightly higher than that obtained in diamond milling.
The Research of Automobile Design Evaluation Method Based on the Eye Tracking System Technology
Authors: Wang Zhen Ya , Liu He Shan , Shi Hui Hui , Liu Hua
Published: May 2011

Automobile design evaluation is the concrete application of the existing evaluation methods in the automobile design area to obtain concrete conclusions. This paper through the study of eye tracking technology and product design evaluation, then use examples to analyze and demonstrate the application of eye tracking in the automobile design evaluation, in order to summarize a product design evaluation process.
Study of Knowledge Processing Method in Automobile Development Process
Authors: Ding Shu Hui
Published: May 2011

In the automobile development process, importing the modeling of design history and domain knowledge, realizing the integration of design process and knowledge, the traditional development activities can be improved and product development can be speeded. Process oriented knowledge system is built, which is constituted by domain knowledge, process history and design intent. It is validated in the automobile design process and the result is satisfactory.
Analysis of Numerical Simulation and Experimental of the Flange in the Deep Drawing of Box-Shaped Parts
Authors: Chen Kang , Peng Cheng Yun , Li Bao Bao
Published: May 2011

Deformation of the flange in the deep drawing of box-shaped parts was studied. The forming of box-shaped parts was simulated through numerical simulation software DYNAFORM, and hardness of box-shaped parts was measured with a hardness tester. The results shows that, the sheet thickness near the midpoint of straight edge is more lager than near the corner, and flow stress is small, indicating that plastic deformation is not sufficient. Sheet thickness of box-shaped parts of large aspect ratio is relatively large, and sheet flow is difficult, which is not conducive to forming. In the experiment, the hardness of rounded corner part is significantly greater than two adjacent straight edges at the same height, which shows that material flow of the rounded corner part is good and hardening phenomenon is obvious, and the maximum hardness is near the entrance to the die corner. The flange deformation of box-shaped parts of the experimental and numerical simulation is the same.
Research and Implementation of WebGIS in Custom-Built Travel Information System
Authors: Yang De Quan , Guo Qiao , La Lei , Cao Qi Min
Published: May 2011

The application of GIS (geographic information system) and webservice in travel information field is an inevitable trend. WebGIS is a type of GIS, integration of these two technologies. This paper provides an overview and information useful for approaching WebGIS. And, the system was described for travel information based on WebGIS. According to the requirements of visitors, a model is created to meet their needs, so the information which displayed on the web can be update. Then, the use of the method was discussed, and some technique were used to analyze data which collect form users. Java Script Object Notation (JSON) was used to transfer the data between server and client. Finally, Custom Personalized Travel System was displayed.
Properties of TiN Coating Prepared on 3Cr2W8V by Electron Beam Surface Alloying Process
Authors: Chen Yuan Fang , Peng Xiao Dong , Chen Kang , Hu Jian Jun , Xu Hong Bin , Han Chao
Published: May 2011

TiN coating was deposited on 3Cr2W8V alloy by PVD and then processed with electron beam surface alloying process. The microstructure, microhardness, friction coefficient, amount of wear and corrosion resistance of electron beam treated specimens were investigated. It is shown that the electron beam treated specimens can improve the properties of material. The coating has an average microhardness of approximately HV800, the friction coefficient of electron beam irradiation treated specimens is considerably lower than that of TiN coating. When the electron beam irradiate times is appropriate, the roughness of surface will much lower, and it will achieve polishing effects. The corrosion behavior of the composite coating in 3.5% Nacl solution at room temperature was also determined using a potentiont state system. In comparion with the corrosion potential for 3Cr2W8V alloy, the corrosion potentials of TiN coating and electron beam treated specimen are increased respectively. The electron beam treated specimen has the lowest corrosion current density as well as the highest corrosion potential showing an improved corrosion resistance compared with 3Cr2W8V alloy.
Investigation of the Friction Properties of Halogenated Modification on the Surface of Nitrile Rubber
Authors: Han Heng , Wang Shi Jie , Lv Xiao Ren
Published: May 2011

Using a variety of halogenated treatments (fluoridation, bromide treatment, iodide treatment and others) on the surface of nitrile rubber, explore the reaction mechanism and its effect on the friction properties of nitrile rubber. The results showed that halogenated treatments on the surface of nitrile rubber can significantly improve the friction properties: the roughness of treated rubber surface becomes better and the density of surface increases, friction coefficient and wear significantly decrease. Among them, the fluoride treatment is the best, followed by mixture treatment, bromide treatment is relatively little worse.
Field Measurement of Cable Tension Using Energy Method
Authors: Zhang Qi Lin , Li Da Lin , Ma Ru Jin
Published: May 2011

For existing cable structures, vibration frequency method (VFM) seems to be the common way to determine the tensile force of the cables. However, the applicability of this method is limited by the specific conditions of cables. Only well tensioned slender cables with simple boundary conditions can be measured through VFM directly without causing much error. In this paper, the vibration mode of the cable is measured and then cable tension is calculated via energy conservation principle.
Research on Effect of High Energy Implant to Resist Thickness
Authors: Mamat Hazian , Rahim Nurfirdaus A. , Wahab Mohd Zahrin A. , Jalar Azman
Published: May 2011

The experiment discusses the issue of high-energy implant to the resist thickness and how the resist etched away during implantation process. The resist that is use as a mask or material to block the dopant ion such as Phosphorous, Boron or Arsenic introduces into silicon substrate. It is a common practice by all semiconductor industrial players to use photoresist as their protection on desired area in which purposely set as non-implanted area. The research benefits the engineer on determine the sufficient photoresist thickness for specific implant energy.
Displacement Analysis of the 4SPS-2CCS Mechanism Based on Hyper-Chaotic Newton-Downhill Method
Authors: Luo You Xin , Che Xiao Yi , Zeng Bin
Published: May 2011

The forward displacement analysis of parallel mechanism is attributed to find the solutions of complicated nonlinear equations and it is a very difficult process. Taking chaotic sequences as the initial values of Newton-downhill method, we can find all the solutions of equations quickly. Based on utilizing hyper-chaotic Hénon mapping to obtain initial points, a new method of finding all real number solutions of the nonlinear questions is proposed. Using cosine matrix method, the author established the mathematical model of forward displacement for the generalized 4SPS-2CCS parallel robot mechanism and a numerical example is given. Compared to the quaternion method building mathematical model, the result shows cosine matrix method building mathematical model and hyper-chaotic Newton-downhill method finding solution is brief and high calculation efficiency as the calculation is done in real number range. The proposed method has universality which can be used in forward displacement of other parallel mechanism.
Finite Element Simulation of Damage Detection of Stiffened Plate under Temperature Variation
Authors: Qu Wen Zhong , Xiao Li
Published: May 2011

Lamb waves are ultrasonic elastic waves that travel inside and along thin plates and is frequently used as diagnostic tools to detect damage in plate-like structures. In this paper, a transient dynamic finite element simulation of Lamb wave with piezoelectric transducers for damage detection in a stiffened plate under different temperature condition is carried out on the commercial finite element code ANSYS platform. Simulations are conducted over a temperature range. The changes in temperature-dependent material properties are used to measure the differences in the response signal’s waveform. The baseline selection method and baseline signal stretch method are used to compensate the temperature influence on Lamb wave propagation. The results of the numerical simulation demonstrate the effectiveness of the temperature compensation approach and the simulated damage on the stiffened plate can be defected effectively under elevated temperatures environment.
Forward Displacement Analysis of the 6-SPS Stewart Mechanism Based on Quaternion and Hyper-Chaotic Damp Least Square Method
Authors: Luo You Xin , Liu Qi Yuan , Che Xiao Yi , Zeng Bin
Published: May 2011

The forward displacement analysis of parallel mechanism can be transformed into solving complicated nonlinear equations and it is a very difficult process. Taking chaotic sequences as the initial values of damp least square method, all the solutions of equations can be found and the solving efficiency is related to modeling methods. Making use of existing chaos system and discovering new chaos system to generate chaotic sequences with good properties is the key to the chaos sequences-based damp least square method. Based on the connection topology of chaotic neural network composed of the four chaotic neurons, hyper-chaos exists in the chaotic neural network system. Combining hyper-chaos with damp least square method, a new method to find all solutions of nonlinear questions was proposed, in which initial points are generated by utilizing hyper-chaotic neural network. For the first time, based on quaternion, the model of the forward displacements of 6-SPS parallel mechanism is built up. The result is verified by a numerical example.
Two-Dimensional Hyper-Chaotic Mapping Interval Newton Iterative Method to Mechanism Synthesis
Authors: Luo You Xin , Zeng Bin
Published: May 2011

Mechanism synthesis questions can be transformed into nonlinear equations to be found. Interval Newton iterative method is an important technique to one dimensional and multidimensional variables and iterative process exhibits sensitive dependence on initial guess point. The characteristic of hyper-chaotic sequences produced by two dimensional hyper-chaotic discrete systems was analyzed. Making use of the advantage of giving rigorous bounds for the exact solution, for the first time, combining hyper-chaos sequences and interval Newton iteration with Krawczyk operator, a new method to find all solutions was proposed. The numerical examples in linkage synthesis and approximate synthesis show that the method is correct and effective.
Effect of Surface Modifier on their Tribological Properties of LaF3 Nanoparticles in Base Oil
Authors: Yu Guo Xian , Jin Mei , Wan Kun , Lu Ping
Published: May 2011

Surface modifiers with different lipophilic chain lengths, such as, lauric acid diethanolamine, myristic acid diethanolamine, palmitic acid diethanolamine and stearic acid diethanolamine, were used to prepare four kinds of LaF3nanoparticles in the mixture solvent of water-ethanol. Morphology and surface modification of LaF3nanoparticles were investigated by TEM, FTIR and TG. Effect of length of surface modifier lipophilic chain on tribological properties of LaF3nanoparticles and their susceptibility to base oils were investigated by a four-ball machine. Results show that the tribological properties of LaF3nanoparticles in the base oil in build up as lipophilic chain length of surface modifiers increases; the longer the lipophilic chain is, the better the susceptibility of the nanoparticles to liquid paraffin wax is. This is mainly because that the lipophilic chain length influences the interface activity of the nanoparticles, moreover, for homologous organic acid soaps, the longer the lipophilic chain is, the better its friction reducing performance is; the properties of base oils also influence the interface activity of the nanoparticles.
Simulation and Test of Bistable Inductive Micro-Switch
Authors: Tian Wen Chao , Hao Ya Feng , Ruan Hong Fang
Published: May 2011

Inductive micro-switch is an integrative device of a sensor and actuator. It can not only induce an external acceleration, but can also be controlled by the external acceleration to realize the trigger action. However, its malfunctions related to “fail-to-closure” and “transient-closure” result in low reliability and weak anti-jamming capability. A new bistable inductive micro-switch is presented based on micro size adhesive effect. The dynamic simulation is obtained by Comsol software. The simulation shows the threshold acceleration is 23.6g, and the response time is 0.38ms. The micro-switch is tested by a centrifuge. The test result shows that the threshold acceleration is 24g.The relative error between the theoretical analysis and the test result is only 1.6%.
Online Learning for Linear Programming with Time-Dependent Cost
Authors: Li Wei , Deng Chong Yang
Published: May 2011

Machine learning and linear programming with time dependent cost are two popular intelligent optimization tools to handle uncertainty in real world problems. Thus, combining these two technologies is quite attractive. This paper proposed an effective framework to deal with uncertainty in practice, based on combing introducing learning parameter into linear programming models.
Organic Polymer Integrated Optics: Recently Design and Simulation of an Electro-Optic 2x3 Switch
Authors: Mohammad Syuhaimi Ab.Rahman , Khaled Mohamed Shaktur , Rahmah Mohammad
Published: May 2011

Electrooptic waveguide technology is suitable for realization of an electro-optic 2x3 switch based on integrated Mach-Zehnder interferometer using polymer material, where ESO of polymeric materials were used. It can provide high performances and it is applicable for all optical switching networks. The relatively low cost technology, easy fabrication process with standard optoelectronic fabrication process and with high degree of integration compared to other technologies make the development of optical switch based on this technology favorable one.
Design of Simulation Model for Production Scheduling in Flexible Manufacturing Systems
Authors: Zeng Bin , Wang Rui , Chen Hong Yu
Published: May 2011

The complex interaction and the high costs of modern manufacturing systems make it necessary to evaluate their use performance. Production scheduling problem is one of the key problems of research of manufacturing systems since with a proper scheduling, the utilization of resources is optimized and orders are produced on time which improves the shop performance and associated cost benefits. However the complexity of modern production systems makes the use of analytical tools more difficult. Thus a computer simulation model of the existing computer integrated manufacturing system based on the control logic that describes the operation of the system is developed to test the performance of different scheduling rules with respect to mean flow time, machine efficiency and total run time as performance measures. According to the results of experiments, the model agrees with the real system.
Research on Product Open Innovation Design Based on Knowledge
Authors: Chen Ji Wen , Zhang Jin Sheng , Wang Zhi , Wang Jing Kun
Published: May 2011

It is difficult for one enterprise to separately master all the knowledge related to its product innovation design. Aiming at this problem, open innovation is introduced to product design. Key technologies of product open innovation design based on knowledge are researched. Based on the ontology expression of internal innovation knowledge, external innovation knowledge and knowledge of innovation theory, open innovation design from function to structure is achieved by gradually indexing. Each functional structure is considered as a gene. Structure innovation design is optimized by cross evolution and variation evolution, achieving organic fusion internal and external innovative design knowledge.
Determination of Bioactive Components of 60°С Volatiles from Cinnamomum camphora Branches by TD-GC/MS
Authors: Li Qing , Zhang Dang Quan , Liu Qi Mei , Peng Kuan
Published: May 2011

The chemical components of helium volatiles from the fresh branches of Cinnamomum camphora were studied by TD-GC/MS. The analytical result by 60°С-based TD-GC/MS showed that 55 peaks were obtained from the helium volatiles from the fresh branches of Cinnamomum camphora and 53 chemical compounds were identified. The results showed that the main components were as: Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-, (1R)- (15.4328%), 1,3-Benzodioxole, 5-(2-propenyl)- (14.881%), Tricyclo[2.2.1.0(2,6)]heptane, 1,7-dimethyl-7-(4-methyl-3-pentenyl)-, (-)- (12.694%), p-menth-1-en-8-ol (9.832%), Bicyclo[2.2.1]heptane, 2-methyl-3-methylene-2-(4-methyl-3- pentenyl)-, (1S-exo)- (6.143%), 1,6,10-Dodecatrien-3-ol, 3,7,11-trimethyl- (5.365%), Bicyclo[3.1.1] hept-2-ene, 2,6-dimethyl-6-(4-methyl-3-pentenyl)- (4.527%), Naphthalene, 1,2,3,5,6,8a- hexahydro-4,7-dimethyl-1-(1-methylethyl)-, (1S-cis)- (4.129%), 3-Cyclohexen-1-ol, 4-methyl-1- (1-methylethyl)- (2.965%), Borneol (2.627%), Bicyclo[2.2.1]heptan-2-ol, 1,7,7-trimethyl-, acetate, (1S-endo)- (2.586%), Copaene (2.534%), 1,6,10-Dodecatriene, 7,11-dimethyl-3-methylene-, (Z)- (1.612%), (-)-Isosativene (1.121%), etc. The analytical result suggested that the helium volatiles from the fresh branches of Cinnamomum camphora could be used as industrial materials of biomedicines and spicery.
Analysis of Top Value-Add Components of Moso Bamboo Root by 300°C Pyrolysis-GC/MS
Authors: Zhang Dang Quan , Liu Qi Mei , Guo Lin Lin , Zhang Huai Yun
Published: May 2011

The extractives of bamboo root was often used to cure some intractable diseases in the countryside of China, but the components of bamboo root extract are still unresolved. Therefore, 300 °C-based pyrolysis- GC/MS technology was used to identify and analyze the top value-added biomedical and bioactive components of benzene/ethanol extractives of Moso bamboo root. 45 compounds representing 97.316 % of the total areas were identified (Table 1) from 55 peaks. The main chemical components of benzene/methanol extractives of Moso bamboo root by 300°C-based Pyrolysis- GC/MS are as: 1,3-BENZODIOXOLE, 5-(1-PROPENYL)- (15.263%), NAPHTHALENE (12.316%), 1,2-BENZENEDICARBOXYLICACID,BIS(2-METHYLPROPYL) ESTER (9.385%), BENZENE, 1,2-DIMETHOXY-4-(2-PROPENYL)- (7.624%), 2-PROPENOIC ACID, 3-(2-HYDROXYPHENYL)- (E)- (6.012%), 4-HYDROXY-2-METHYLACETOPHENONE (5.226%), 1,2-BENZENEDICARBOXYLIC ACID, BUTYL2-METHYLPROPYL ESTER (4.328%), etc. The result showed that the 300 °C pyrolyzate of benzene/ethanol extractives of Moso bamboo root is rich in biomedical components, and also contains some bioactive components which can be used as top value-added materials of high-grade spice, cosmetic and food.
Experimental Investigation on Vibration-Reduced Characteristics of Non-Obstructive Particle Damping for Free Beam Structure
Authors: Wang Wei , Li Yu Yan
Published: May 2011

Non-obstructive particle damping is a composite damping technology based on traditional particle damping and impact damping. Being Compared with viscous elastic damping structure, advantage of NOPD is damping characteristic of system improved greatly on the basis of specific whole designing structure and whole mass. The technology has good general vibration-reduced outcome. Beam structure is a common structural element form in engineering application. Because of vibration or instability of beam under external excitation, in this paper, free beam is regarded as an object, and many factors affecting damping characteristic of NOPD are studied, which supplies referring results for engineering application of NOPD.
Determination of Trace Bismuth in Urine and Tap Water Samples by Atomic Absorption Spectrometry after Solid-Phase Extraction
Authors: Zhang Dong
Published: May 2011

In this paper, a new method for the determination of bismuth in urine and tap water is described. The methodology combines determined using a hydride generation-atomic absorption spectrometry (HG-AAS) with pre-concentration of the bismuth on the modified organobentonite by dithizone (D-O-bentonite). Optimal experimental conditions for the adsorption and elution of the bismuth, including pH, contact time, eluent concentration, eluent volume and co-existing ions have been investigated. The result showed that the bismuth ion could be adsorbed on the D-O-bentonite. The adsorbed quantitive was affected by the pH value and contact time. In the medium of pH 5.0, the shaking time was 10 min, the adsorption capacity was 15.2 mg·g-1. The bismuth adsorbed on the modified organobentonite by dithizone could be completely eluated by using 2 mol·L-1 HNO3. The method has been applied to the pre-concentration/separation of bismuth in the human urine and tap water samples with satisfied results.
Solid-Phase Extraction of Hg (II) by a Porous Nano-Barium-Strontium Titanate Microspheres from Blood and Urine Samples
Authors: Zhang Dong , Zhang Yan Li
Published: May 2011

A new system for determination of trace mercury based on separation and preconcentration with porous nano-barium-strontium titanate microspheres (PBSTM) prior to its determination by a hydride generation-atomic absorption spectrometry (HG-AAS) was propounded. The optimum experimental parameters for preconcentration of mercury, such as pH of the sample, contact time, sample volume, eluent and interfering ions, have been studied. The result showed that mercury could be quantitatively retained by PBSTM in the pH range of 4-8, the shaking time was 10 min, and the amount adsorbed was 12.2 mg·g-1. The mercury adsorbed on the sorbent could be eluated completely with 2 mol·L-1 HNO3. The detection limit of this method for mercury was 6.3 ng·L-1 with an enrichment factor of 60. The method has been applied for the determination of trace amounts of mercury in whole blood and urine with satisfactory results.
Comparison of Indoor Air Quality Measurement by Using Direct Detection Apparatus and Standard Methods
Authors: Kung Pei Yi , Wang Yi Tun , Chiu Jui Chi , Hsu Yi Chyun , Wu Ting Nien , Shen Yun Hwei , Wen Shaw Bing
Published: May 2011

People usually spend almost 90% of time under various indoor surroundings in their daily lives, and thus the impact of indoor air quality (IAQ) on human health has received much attention recently. In this study, 20 public sites were selected as case studies to compare the difference of indoor air quality measurements. Indoor air quality was first assessed by direct detection apparatus, including CO2, CO, HCHO, TVOCs, PM10, PM2.5, and O3. Based on the results of walk-through detection, indoor air contaminants at hot-spot location were measured in a 24 hour period by the EPA standard method. The use of direct detection apparatus has the advantages of easy operation, high mobility, rapid detection, and less cost. However, official data of indoor air quality measurement is based on the detailed measurement by Taiwan EPA’s standard methods that possess high precision and accuracy. The comparison of direct detection data and the detailed measurements by standard methods illustrated that there exists a high linear relationship for CO2, PM10 and PM2.5 measurements. It means that direct detection data of CO2, PM10 and PM2.5 are reliable, and direct detection apparatus can be applied to monitoring of these indoor air contaminants for the better control of their accumulations.