bluuebunny/crossref_metadata_2025 huggingface dataset:
Application of Sulfoaluminate Cement for Solidification/Stabilization of Fly Ash from Municipal Solid Waste Incinerators
Authors: Sun Qi Na , Li Jing Miao , Huo Bao Quan , Wang Ji Bing
Published: June 2012

Sulfoaluminate cement (SAC) was utilized for the solidification/stabilization of fly ash from municipal solid waste (MSW) incinerators. The effects of fly ash amount and water/binder ratio were investigated on compressive strength and heavy metals leaching toxicity of solidified matrices at different curing times. The results showed that prolonged curing time, lower fly ash amount and water/binder ratio enhanced the compressive strength and decreased the leaching concentrations of Zn, Pb and Cu. For 28 days cured matrices with fly ash amount 50% and water/binder ratio 0.30, the compressive strength was 32.6 MPa and the leaching concentrations of Zn, Pb and Cu were 14.73, 0.75 and 0.43 mg/L respectively. The leaching concentrations of Zn, Pb and Cu met the demand of GB 5085.3-2007. SAC is proved to be effective for MSW incinerator fly ash solidification/stabilization and high performance matrices for disposal and reuse may be achieved with further formula optimization.
Evaluation of Zinc Contamination in the Sediments of Salt River Mouth, Taiwan
Authors: Chen Chun Ting , Chen Chiu Wen , Chen Chih Feng , Dong Cheng Di , Ko Ming Sheng , Kao Chih Ming
Published: June 2012

The distribution, enrichment, and accumulation of Zinc (Zn) in the surface sediments of Salt River mouth, Taiwan, were studied. Results show that samples collected from nine stations near the mouth of Salt River contain 440–1,820 mg/kg of Zn with average of 951±811 mg/kg. The spatial distribution of Zn reveals is relatively high in the river mouth region, and gradually diminishes toward the harbor region. This indicates that upstream industrial and municipal wastewater discharges along the river bank are major sources of pollution. Enrichment factor analysis indicates that the sediments of Salt River mouth were moderately severe enrichment with Zn. Geo-accumulation index analysis indicates that the sediments of Salt River mouth were strongly accumulated with Zn. Base on the comparison with sediment quality guidelines (SQGs), the concentrations of Zn in the sediments of Salt River mouth may cause acute biological damage.
Numerical Analysis of Water Mist Drop Survival Time
Authors: Li Ying , Pu Jin Yun , Zhang Shuo
Published: June 2012

in order to study the survival time of the water mist, the quality, energy and motion models were established by using mathematical methods, and then the three models were integrated by fourth-order Runge-Kutta method; at last, by analysis of simulation data, the conclusion were obtained that the survival time of the droplet had been related the particle size and ambient temperature, and their running distance had been related to the particle size and initial velocity.
A Monitor Calibration Model Based on Artificial Neural Network
Authors: Zhao Lei , Chen Guang Xue , Tang Bao Ling , Xu Rui Xin
Published: June 2012

There is a very complicated nonlinear relationship between the input digital image pixel value and the display colors, which is difficult to be described by traditional linear methods to achieve high accuracy. In the study, a monitor calibration model is established based on artificial BP neural network theory and by the hue angle range of the experimental data display classification. Because of the good simulation of nonlinear properties of the BP neural network, the calibration model achieves high accuracy. The color error mean value between the chroma value to be displayed and the chroma value driven by the image pixel value which is calculated by the calibration model is rather less than that of the minimum range of the human eye can identify. The calibration model could be used in the gamut matching phrase in the printing color management system, when the monitor is severed as an output device.
Dairy Digital Management Information System Development Based on SOA
Authors: Li Hong Qiang , Lu Hai Bo , Qu Jiao , Li Xiang Ling
Published: June 2012

This paper describes the software of “dairy management information system”. The software based on JSP + Serverlet + JavaBeans model developed for medium-sized dairy farms. The software is divided into herd management, milk production management, cattle breeding, statistics and analysis, a cattle ranch management, system management functions, and dairy cows can be a variety of technical data to analyze, synthesize, organize, is a practical, economic, and user-friendly information management system for dairy farm.
An Effective Similarity Measurement Algorithm for Dominant Color Feature Matching in Image Retrieval
Authors: Yang Li Fang , Huang Xiang Lin , Lv Rui , Lv Hui
Published: June 2012

For the reason that dominant colors can characterize color information of image region and can represent the image using fewer dimensions, it is one of the widely used color features in image retrieval. We extract the dominant color feature in HSV color space, and combine it with color distribution information. In this paper, a new similarity measurement algorithm based on block distance is proposed for dominant color matching. Our proposed algorithm not only takes the distance between dominant colors into account, but also the difference of the percentage of dominant colors. The average precision of our algorithm improves about 5% and about 14% respectively compared with block distance and Euclidean distance. Although the average precision of our algorithm is almost equal to quadratic form distance, the computation cost of our algorithm is obviously less than it.
Research on Fuzzy Control of Inverted Pendulum in the MATLAB Environment
Authors: Zhai Xiao Hua , Yao Shu Xia , Xu Zhi Hui
Published: June 2012

Inverted Pendulum is a typical system with multivariate, nonlinear system. Research on inverted pendulum can be attributed to research on nonlinear multivariate absolutely unstable system. Its control methods and ideas have an extensive usage. In this paper, a fuzzy controller is introduced to control single inverted pendulum system, and the performance characteristic of this system is also introduced. The control result of the inverted pendulum is good, the oscillation is small. Research result indicated that the control performance of fuzzy control is to select good membership function and discourse domain.
Design of Multi-Signal Testing System Based on ARM & FPGA
Authors: Dong Jian Jun , Zhou Tan Sheng
Published: June 2012

This paper presents a multi-signal testing system based on ARM & FPGA, Paper discussed system structure design, including hardware and software design. The hardware uses FPGA to expand ports and USB2.0 interface chip CY7C68013 for signals data transmission; software including system firmware, driver, user applications the three-parts design. The design of the system meet requirements, its high performance, low cost and can be widely used in signal analysis, monitoring and other fields.
A Flight Simulator that Grouping Aircrafts Simultaneously Take off and Land in Open Grid Computing Environment
Authors: Lü Zhi , Gao Zhan , Lü Yi
Published: June 2012

The performance of airplane in commercial airline environment is determined by, and therefore an indicator of performance measure of, the thermodynamic properties of airplane. The aim of this study was to establish the use of simulators to determine aircraft accident for a flight of airplanes and evaluate the potential of new airspace structure and airport’s runway. This indicates that there is a possibility of obtaining airplane performance from analysis and verification simulating airplane. As compared with AIRBUS Full Flight Simulator, a multiple aircrafts flight simulator that grouping aircrafts simultaneously take off and land was presented, which is basis on a parallel distributed computing in Open Grid Computing Environment (OGCE), and service oriented architecture (SOA) of software in multiple aircraft simulator, the performance of collaborative flight of multiple aircrafts is evaluated.
Influence of Fe and Co and Cr Doped Amount on the Photoactivating Property of Nanometer ZnO Powder
Authors: Huang Xin You , Gao Chun Hua , Chen Zhi Gang
Published: June 2012

Fe and Co and Cr doped nanometer ZnO powder was prepared respectively by coprecipitating method with ZnNO3•6H2O, HCl, NaOH, FeCl3•6H2O, CoCl2•6H2O, CrCl3•6H2O as raw materials. Influence of Fe and Co and Cr doped amount on the photoactivating property of nanometer ZnO photocatalyst powder was studied respectively by methyl orange solution as a reaction model. The particle size and dispersion of Fe-doped ZnO powder was characterized by transmission electron microscope(TEM). The results show that the photoactivating activity of nanometer ZnO powder starts increasing and then decreasing when Fe or Co or Cr doped amount decreases.The photoactivating activity of nanometer ZnO powder is maximum when Fe or Co or Cr doped amount is 0.2 wt.%, the degradation rate of methyl orange is 60.79%, 52.56%, 53.91% after ultraviolet light for 50 minutes, respectively. When Fe doped amount is 0.2wt.%, the degradation rate of methyl orange is the highest, the degradation rate of methyl orange is 60.79%, particle size is 20-30 nanometer and dispersion is good.
The Mechanical and Tribological Properties of Carbon Fiber Reinforced POM Composites
Authors: Tian Yu Qin , Huo Jun Long
Published: June 2012

Different contents of carbon fiber were employed as reinforcement for Polyoxymethylene (POM) composite. All filled and unfilled POM composites were tested against CGr15 ball and representative testing was performed. The effects of carbon fiber content on tribological properties of the POM composites were investigated. The worn surface morphologies of pure POM and its composites were examined by scanning electron microscopy (SEM) and the wear mechanisms were discussed. Results show that all filled polyimides have superior tribological characteristics to unfilled ones. The optimum wear reduction was obtained when the content of carbon fiber is 15vol%.
A Fuzzy Robust Model to a Project Decision Management for DMSMS Problem
Authors: Tsai Yuan Cheng , Chen Ming Chia
Published: June 2012

This paper provides a theoretical solution to the problem of diminishing manufacturing sources and material shortage (DMSMS) from a military product support perspective. We build a model of fuzzy risk evaluation of strategies and Robust Inventory strategies to treat as the fitness. An example is used to illustrate the concept developed, which would be meaningful to reduce applicable obsolescence risks and thereby reducing related life cycle costs.
Investigation on the Dispersion of SiC Nanoparticles in Rubber Matrix
Authors: Sun Shuang Shuang , Jia Fang Wu , Li Zhen Jing
Published: June 2012

SiC nanoparticles were treated by hydrofluoric acid (HF) and then put into the formulation of tread compounds of tire. After being mixed fully in the open mill and vulcanized in the sulfuration machine, some rubber nanocomposites filled with SiC nanoparticles were finally prepared out. The SiC nanoparticle reinforced rubber composites were observed by Scanning Electron Microscope (SEM). It was found that SiC nanoparticles show good uniformity of dispersion and unobvious agglomeration of particles in rubber matrix after short-time treatment by HF, while they show bad uniformity of dispersion and obvious agglomeration of particles in rubber matrix after long-time treatment by HF.
Construct Automatic Monitoring System for Residential District Street Lamps to Increase Maintenance Efficiency
Authors: Lee Jen Rong , Hsueh Sung Lin
Published: June 2012

Residential district street lamps are important public safety facilities for night illumination. Residential district street lamps are numerous, consume a great deal of power, and are difficult to repair and maintain, as they require high costs in both time and labor to maintain individual luminance and a steady power supply to both the system and the lines. An automatic monitoring maintenance management system for street lamps is put forward in this study, which maintains changes in the loop currents of street lamp switch boxes, and uses the function of GPRS to send detected current change values to a control center in order to identify failures of street lamps of different loops, thus, both the cost of maintenance labor and maintenance time can be greatly reduced. The switching of street lamps can be controlled by a control center, and the utility management of energy and safety of the public can be effectively improved.
Sensor Fault Detection and Estimation for Nonlinear Process with Time-Delayed Variables
Authors: Fu Ke Chang , Liu Peng , Ming Zhu , Jiang Shi Qi
Published: June 2012

Time-delayed variables is of potentially critical impact on product quality within the processes of Metallurgical industry, Aviation industry and Chemical industry. It is very important to detect the sensor fault and estimate the values of time-delayed variables immediately as soon as faults occurred. Any fault of the time-delayed variable implies that a detrimental effect on the process will go unnoticed until the next sample become available. During this time, of course, poor quality product continues to be manufactured, a situation which is clearly unacceptable from a cost-effectiveness point of view. For nonlinear process with time-delayed variables, kernel partial least squares is introduced to monitor and estimate the fault of the Tennessee Eastman benchmark. Simulation results demonstrate the effectiveness of the proposed algorithm.
Strain Monitoring of T-Stiffened Panels Subjected to Low-Velocity Impact Using Embedded FBG Sensors
Authors: Zhou Yu Jing , Liu Gang , Li Xue Qin , Yi Xiao Su
Published: June 2012

The strain at the low-velocity impact proceeding was monitored by the fiber Bragg grating (FBG) sensors embedded in the triangle area of the T-stiffened panels. The results show that the strain in whole impact process can be monitored by FBG sensors. Furthermore, the max-strain measured by FBG sensors changed sensitively depending on the different impact energy. It can be hoped that the FBG sensors can be used as online-monitoring technique to improving the safety of the composite structures.
Finite Element Simulation Analysis of Cold Rolling Process for Stainless Steel Tube
Authors: Li Yong Hua , Fan Tao , Liang Xin Jun
Published: June 2012

The 3D finite element simulation of three-roller cold rolling model for stainless steel tube was established using finite element software MSC. Marc. The metal flow rule of contact deformation zone, the distributions of equivalent stress and strain were analyzed. The experiment of cold rolling process was carried out based on the technical parameters of the simulation.
Research and Design of Polynomial Short Stroke Control Curve for Roughing Process
Authors: Li Xue Tong , Huang Zhao Meng , Wang Min Ting , Du Feng Shan
Published: June 2012

A numerical simulation model for vertical-horizontal rolling process in roughing trains is built according to 3-D rigid-plastic finite element method (FEM), which is validated by comparing the simulation results with measured ones of industrial production. The principle of width deviation appearing on head and tail of slab is investigated by the finite element (FE) simulations. A new polynomial short stroke control (SSC) model is developed based on the comprehensive simulation results and the analyzed results show that, at the aspect of width control, the new SSC model is more effective than the two line one.
A Node Split Method for Crack Growth Problem
Authors: Peng Guo Liang , Wang Yu Heng
Published: June 2012

A node split method based on Partition-of-unity method and mesh modified has been developed for numerical simulation of crack growth. The crack tip could be represented by the enrichment function based on Partition-of-unity method. The crack besides the tip always locates on the edge of element by moving the nodes around crack, and the continuity of crack could be kept on. For an example of 2D quadrilateral mesh, mesh processing has been presented on different condition. The simulation results indicate that applying the node split method to simulate crack growth problem can achieve relatively good results even for sparse grid.
Study on Blank Holder Force Control in Sheet Metal Forming Process
Authors: Lin Xiao Juan , Wang Jian Hua , Liu Ke Gao
Published: June 2012

BHF is an important technical parameter in sheet metal forming, its main function is controlling material flowing，avoiding wrinkling and fracture. The status of study on the control technology of variable blank holder force (VBHF) was summarized, focusing on the method of optimized controlling and the theory of developing trend of VBHF is introduced in the paper.
Interlaminar Stress Distributions of Notched Angle-Ply AS4/PEEK Laminate under Tension
Authors: Huang Bo Sheng , Zhao Guo Hua , Shu Qing Lian
Published: June 2012

This paper investigates the interlaminar stress distributions of notched angle-ply thermoplastic laminate under tension numerically. The representative AS4/PEEK laminate with configuration of was studied by finite element code ANSYS. The results show: The interlaminar stress concentrations are evident and localized in the vicinity of the hole and the two free sides, and the maximum values always appear near the hole. Meanwhile, the interface between two layers with the same layup angles has higher normal stress concentration, while interface between layers with opposite layup angles will have higher shearing stress concentration.
Study on Assembly Design Method Based Digital Mock-Up
Authors: Yang Yun Bing , Deng Ke Wen , Wei Fa Yuan
Published: June 2012

The essentiality of assembly assessment and assembly optimization in design stage is analyzed, and the existent problems of conventional assembly design method are illuminated. ADMDMU (Assembly Design Method based Digital Mock-Up) is illuminated, and the process of ADMDMU established, and the ADMDMU architecture is given out. The key techniques of ADMDMU are analyzed, and include assembly design based KBE (Knowledge Based Engineering) and virtual assembly based physically attribute. According to physical attribute, physically based modeling, visual object movement control, force simulation method and assembly sequence planning method are emphatically illuminated. Assembly design system based DMU is established in foundation of ADMDMU.
The Research and Implementation for Vertical Search Engine of Automobile Information
Authors: Xia Bin , Guo Peng Yan , Qiao Hong Bo , Gao Rui
Published: June 2012

Automobile information on internet increases fast as the quick development in automobile information construction. However, general search engines are unable to meet the increasing demand for accurate searching of automobile information. The present paper reports the designing and implementation of a vertical search engine of automobile information by adopting vector space model to identify the automobile subject, and combine content analysis and link analysis. This search engine was proven making the result more reasonable and effective and thus increasing the rate of accuracy of search engine.
Generating Document Tree of Workflow with Synchronization Process
Authors: Hu Fei Hu , Jiang Jie , Qin Wei Yang , Li Yi
Published: June 2012

In this paper, we introduce the concept of data model, and design an algorithm to generate a tree-like structure that describes the hierarchy of nested synchronizations. A data model and document tree example based on the RTWD net is studided. The resulting document tree shares information with control flow, and displays its hierarchy structure.
A Real-Time Sea-Sky-Line Detection Method under Complicated Sea-Sky Background
Authors: Gui Yang , Zhang Xiao Hu , Shang Yang , Wang Kun Peng
Published: June 2012

A real-time sea-sky-line detection method under complicated sea-sky background is presented. Firstly, a black-white template is constructed and used for fast correlation matching in several searching regions which are predefined in input image, position of maximal correlation coefficient in each predefined region is hunt out, and coordinates of several candidate sea-sky-line points are made certain according to the position. Then, RANSAC algorithm is applied to preserve interior points which are really on the sea-sky-line and eliminate exterior points which are not. Finally, line parameters of the sea-sky-line can be gained by applying least squares line fitting for all interior points. The pixels of several regions in the image instead of the whole image need to be considered, so computational cost can be reduced dramatically. The experimental results show that the proposed method can detect out sea-sky-line under complicated sea-sky background effectively and has many advantages such as strong robustness and speedy calculation.
A Region-Based Image Matching Combining Global and Local Features
Authors: Hou Jing , Pian Jin Xiang , Zhang Ying , Wang Ming Yue
Published: June 2012

A new approach is presented to match two images in presenting large scale changes. The novelty of our algorithm is a hierarchical matching strategy for global region features and local descriptors, which combines the descriptive power of global features and the discriminative power of local descriptors. To predict the likely location and scale of an object, global features extracted from the segmentation regions is used in the first stage for an efficient region matching. This initial matching can be ambiguous due to the instability and unreliability of global region feature, and therefore in the later stage local descriptors are matched within each region pair to discard false positives and the final matches are filtered by RANSAC. Experiments show the effectiveness and superiority of the proposed method in comparing to other approaches.
An Explicit Difference Method for a Class of Aging Diffusion Equations Group
Authors: Wang Zu Yao , Zhang Xiao Zhong
Published: June 2012

Based on the second-order difference formulas of the first and second derivatives, an explicit difference scheme is proposed for a class of aging diffusion equations group. The method is of order and proved to be conditionally stable by Fourier analysis. The difference equation can be solved without iterative for it is an explicit scheme. Numerical results show the efficiency and dependability.
An Ant Colony Algorithm Method for Multi-Objective Production System
Authors: Lan Chun Hsiung , Lan Kuo Torng , Hung Tzu Ying
Published: June 2012

This paper proposed a mathematical model called Multi-objective Production System Design (MOPSD) model solved by Ant Colony Optimization (ACO). The MOPSD model placed a production system under the constrained factory space to achieve the minimal total material transportation flow cost. This paper discussed 2-phase pheromone layout procedure that we proposed how to transform the best design information into and the relationship and tracing technology. After modeling experiment we proved it can be put the best design information into 2-phase pheromone layout procedure and achieved the minimal total material transportation flow cost by simply tracing technology.
Study on Filter Algorithm of QoS-Based Fuzzy Multi-Attribute Web Service Composition
Authors: Fang Xiang Rong
Published: June 2012

In this paper, an in-depth research has been done on the physical meaning and value features of the QoS attribute values under the definition of the functional attributes and non-functional attributes of Web services, giving the computation formulae and matching method expressing QoS composition as interval numbers, providing a more comprehensive and objective information matrix for fuzzy multi-attribute decision making. For multi-attributes fuzzy decision-making matrix with weight information known and the preference information of composition solution given in the form of interval numbers, calculating the overall attribute values, and sorting solutions by using the formula of probability degree, a QoS-driven multi-level composition Web Service selection algorithm is proposed, and simulation runs indicate the feasibility and effectiveness of the algorithm.
Effect of Substrate Bias Voltage on the Mechanical and Tribological Properties of Low Concentration Ti-Containing Diamond Like Carbon Films
Authors: Cui Jin Feng , Qiang Li , Zhang Bin , Ling Xiao , Zhang Jun Yan
Published: June 2012

Ti containing hydrogenated diamond like carbon films (Ti-DLC) was deposited on Si substrates at room temperature by magnetron sputtering Ti-twin target in methane and argon mixture atmosphere via changing the substrate bias voltage. The Ti atomic concentration in the film is less than 0.57% and exists mainly in the form of metallic titanium rather than TiC, confirmed by XPS analysis. The internal compressive stress of the film decreases monotonically with the substrate bias voltage increase. However, the hardness values of the film keep at level (12 GPa) without almost any obvious change with the increase of the substrate bias voltage. Furthermore, Ti-containing DLC film prepared at -1600 V substrate bias voltage shows an extremely low wear rate (~10-9mm3/Nm) and low friction coefficient (0.09).
Study on Polyurethane-Acrylic Hybrid Emulsion Applying to Water-Based Ink
Authors: Tai Jing Lei , Chen Guang Xue , Chen Qi Feng , Tang Bao Ling
Published: June 2012

Polyurethane-acrylic composite emulsion was synthesized by swelling polymerization with aqueous polyurethane dispersion as seed, and acrylic as monomers. The obtained polyurethane-acrylic (PUA) composite emulsion were characterized by means of IR spectra, and the results showed that the obtained emulsion was hybrid emulsion of polyurethane and acrylic, which had smaller particle size and higher viscosity and was more suitable for the preparation of ink. The obtained water-based PUA emulsion and alkyd resins were used as ink binder. The obtained water-based ink had good water resistance, color density, gloss and friction fastness.
Study on the Industrial Wastewater Treatment by Modified Bentonite
Authors: Shao Hong , Zhang Zhi Fang , Cao Ning
Published: June 2012

The natural bentonite as raw material, chitosan as a modifier to prepare chitosan modified bentonite. The use of modified bentonite, each dealing with a high concentration of COD monosodium glutamate (MSG)wastewater and coking wastewater .The optimal conditions: mixing time : 10 ~ 12 min;centrifugation time :25 ~ 30min; PH: 8.5 ~ 9.5; dosage: 10~14g / L. The results showed that the treatment of modified bentonite is better than the bentonite and chitosan. The COD removal rate of MSG wastewater and coking wastewater were 60.1% and 82.3%. So the treatment of coking wastewater is efficiency.. By scanning electron microscopy, surface area and X-ray diffraction analysis shows that modification does not change the basic structure of the bentonite only increased the specific surface area of bentonite, and the adsorption capacity of pollutants.
Preparation and Properties of Zinc Diacrylate-Modified Montmorillonite/Rubber Nanocomposite
Authors: Cao Yang , Gu Ning , Hu Shuang Qi , Jin Ri Ya , Zhang Jing Lin
Published: June 2012

Organo-montmorillonite (OMMT)/nature rubber (NR) nanocomposites were prepared by mixing method. The microstructure of these composites was characterized by SEM and XRD. The effect of OMMT on mechanical properties and thermal conductivity of the nanocomposites was investigated in detail. SEM and XRD confirmed the intercalated structure of OMMT/NR nanocomposites. The introduction of a small amount of OMMT greatly improved the mechanical properties and thermal conductivity behavior, which was attributed to the nanometer scale dispersion and stronger interactions between OMMT and NR chains.
A Cable Sheath Material Thickness Measurement Method Based on Image Measurement Technology
Authors: Bian Jin Hong , Wang Ji Lin , Xu Sen , Zhou Tian
Published: June 2012

Sub-pixel positioning is a key technology in geometry measurement field. Reckoning on the low accuracy of ordinary polynomial interpolation for sub-pixel positioning method because of losing the position of edge points, an improved Sobel edge detection method is first proposed, and then is applied to the thickness measurement system of cable sheath material. The experiment shoes that the edge coordinateonthe detected by our proposed interpolation method is more colse to the real edge than the original method.
Study on Techniques for Optimization of Fault Diagnosis and Tests Based on PSO
Authors: Chen Xin , Sun Jian , Zhang Shuai
Published: June 2012

This paper analyzes the optional flow chart for different kinds of tests based on hybrid diagnostic modeling technique. Furthermore, combining with varied diagnostic tests, we use the modified particle swarm algorithm (PSO) to improve the disadvantages of the traditional fault diagnosis and tests (FDT). According to the result of the filter experiment, the proposed method performs better and requires for lower ability of computation and takes less time for testing. The method can effectively optimize FDT.
The Research of Fiber Optic Gyroscope Error Based on Insertion Loss and Beam-Splitting Ratio of Y-Waveguide
Authors: You Xin Wang , Huang Ping , Lou Shao Feng
Published: June 2012

Y-waveguide is widely used in the integrated optics,among which the beam-splitting ratio and insertion loss are the most critical parameters. The measurement setups and methods for the two parameters are introduced. The temperature is the most important factor to the stability of Y-waveguide. As for the insertion loss, the measurement setup was built up based on the measurement principle, and the factors which affected the measurement of the insertion loss were analyzed. As for the beam-splitting ratio, the output luminous power for two tail fibers of Y-waveguide was measured respectively. In different temperature condition, we study the error of FOG by various beam-splitting ratio after working out the beam-splitting ratio according to the formula. Then put into compensation implement.
The A/D Conversion Based on LM3S2110
Authors: Wang Yong Ming , Tao Ya Xiong , Wang Yi Chuan , Zhang Bing Xin
Published: June 2012

LM3S2110, which not equipped with A/D converters, is the microprocessor based on Cortex-M3.The design takes advantage of on-chip analog comparator to constitute the A/D converter with great precision, fast conversion speed, low cost. Equally, the excogitation also afford hardware implementation methods and software process. The conversion technology revolving about LM3S2110 controller employs the built-in comparator and the PWM module to achieve A/D conversion function through converting analog input signal into digital output signal. The results imply that the technology has high cost performance and pretty well conversion accuracy while attaining conversion.
Survey on Computer Virtual Combination Technology in Product Series Design
Authors: Li Zhe
Published: June 2012

Series design is a systemic design process for enterprises, while computer virtual combination technology is vital for product series design. In the present paper, products series design is investigated; and based on it, various computer virtual combination technologies used in product series design are reviewed. The usage of computer virtual combination technology can save the cost of production, complete series design task and improve the efficiency and level of product series.
Lithofacies Palaeogeography Reconstruction Based on GIS
Authors: Li Shao Hua , Li Qiang , Li Hui
Published: June 2012

The facies palaeogeographic reconstruction can be achieved by using the single factor analysis and multi-factor comprehensive mapping method and GIS spatial analysis functions. Single factors are the factors which can independently reflect some characteristics of sedimentary environments of a stratigraphic interval of a section in an area, such as the thickness of the interval and its specific rock types, texture constituents, etc. The multifactor comprehensive mapping method takes these quantitative single factor maps together and makes an integrative analysis. The reconstruction of lithofacies palaeogeography can be achieved in a particular area efficiently and exactly based on GIS system.
ECRPW: Energy-Efficient Clustering Routing Protocol Based on Weight for WSNs
Authors: Gu Xiang Ping , Hu Rong Lin
Published: June 2012

ECRPW (energy-efficient clustering routing protocol based on weight) routing protocol is presented to avoid the characteristic of limited energy for wireless sensor networks. It takes nodes’ residual energy into consideration during the process of cluster heads being elected. The constraint of distance threshold is used to optimize cluster scheme. Furthermore, it also sets up the routing tree based on cluster heads’ weight. We simulate and analyze LEACH and ECRPW in NS2. The results show that the performance of ECRPW is better than LEACH.
The Development of a Product Ontology Information System for Similarity Measurement
Authors: Song Jia , Xu Hong Sheng
Published: June 2012

Recently, the amount of multimedia content is increasing considerably. Several concurrent trends made this happen. Current software made creating, sharing, and editing of multimedia resources a common and easy task. In this paper we present a formal and implemented generic framework for building ontology-based information systems. The recall and precise of product ontology similarity measurement were higher than that of the traditional similarity measurement. In order to address this research issue, an ontology-based multi criteria decision model is proposed. The experimental results indicate that this method has great promise.
Simulation Analysis of Vehicle Crosswind Stability in ADAMS/CAR
Authors: Jiao Hong Yu , Zhang Kai , Li Ying , Liu Hao
Published: June 2012

The vehicle simulation model of 78-DOF is built based on ADAMS/CAR. Both rationality and accuracy of simulation model are verified by comparison analysis methods between real vehicle test and virtual simulation test. The mathematical model of wind pressure center and lateral aerodynamic force are formulated by using the STEP function. The simulation results indicate that the vehicle has the excellent crosswind stability and congruent dynamic response, which agrees with United States (ESV) standard.
Bending Properties of Four-Layer Biaxial Weft Knitted Fabric Reinforced Composite Materials
Authors: Liu Liang Sen , Qi Ye Xiong , Li Jia Lu
Published: June 2012

In this paper, a kind of composite laminates whose reinforcement is four-layer biaxial weft knitted (FBWK)fabric made of carbon fiber as inserted yarns has been made. The composite laminates have been impregnated with epoxy resin via resin transfer molding (RTM) technique. The samples of the experiments have been made from the composite laminates. The bending properties of the FBWK fabric reinforced composite materials with different fiber volume fraction have been investigated. The results show that the bending strength of this kind of composites increases with the fiber volume fraction increasing. The bending strength of FBWK reinforced composites with fiber volume fraction of 52% can reach 695.86 MPa. And the relationship between bending load and deflection is obviously linear.
Study on Improvement of Photopolymerization Curing Performance of UV Ink
Authors: Chen Guang Xue , Chen Qi Feng , Tang Bao Ling , Tai Jing Lei
Published: June 2012

UV ink has many advantages such as less pollution, high curing speed, saving energy, so it has been widely applied in traditional printing and emerging digital printing. In this paper, the two curing principles in UV ink which are free-radical curing and cationic curing, are discussed and compared, and the factors that affect the curing rate are analyzed through the comparing experiment of the curing rate. In the last, the selection principle of photoinitiator is established by means of analyzing and comparing curing rate when various photoinitiator or photoinitiator combinations is used in UV-cured ink. These studies have certain significance for improving the curing efficiency of UV ink and its application.
Modeling and Multi-Objective Optimization of Woodblock Gasification Process
Authors: Li Da Zhong , Zhu Hong , Wu Ying Jie
Published: June 2012

In this paper, the LS-SVM model of woodblock gasification process has been established. The test results show that the model has better simulation and prediction effect for woodblock gasification process. On the basis of this model, the multi-objective optimization functions which is during control parameters (gasification temperature and equivalence ratio) and gas heating value and tat content is established, aiming to obtain the optimal target value of control parameters when the gas heating value reach maximum and lowest tar content in the process of woodblock gasification. The Pareto optimal solutions are obtained by optimization calculation. And each group data of the solutions is a compromise selection for gas heating value and percentage of tar heating value in raw material. It is more in line with practice more than a group of optimal solution.
The Effect of Disc Radius on Heat Flux and Temperature Distribution in Friction Clutches
Authors: Abdullah Oday Ibraheem , Schlattmann Josef
Published: June 2012

Friction clutch is an important machine element, which transmits the torque from the engine to the gearbox. Hence, an accurate estimation of the heat flux and temperatures on the friction surfaces is essential for proper design of the clutch to avoid failure due to thermal stresses. The dimensionless radius ratio (R=inner disc radius/outer disc radius) is the main key quantifying the quantities of heat flux and temperature on friction materials of clutch. Furthermore, the effect of (R) on the axial force, inner and outer radius, peripheral velocity and torque is investigated as well. The MATLAB and ANSYS have been used to perform the numerical calculation in this paper.
Improvement on Gap Detection Servo System of EDM Based on Fuzzy Inference System
Authors: Wang Yan , Wu Guang He
Published: June 2012

The chief purpose of servo control system is gap detection and control during the process of EDM. In this paper, there are evaluations and introductions about two gap detection methods--average voltage detection and effective spark number detection, which are widely used in nowadays. A new method based on fuzzy PID adaptive control about the two gap detection methods is introduced to improve the accuracy and anti-interference performance.
An Embedded Infrared Image Enhancement System Based on DSP and FPGA
Authors: Liu Dong Mei , Zhang Tao , Yin Chuan Li , Ji Xiao Qiang
Published: June 2012

According to the disadvantage of the large noises of histogram equalization algorithm, a new adaptive image enhancement algorithm is presented. First, the statistical histogram of the infrared image is done. Then the threshold of plateaus Equalization is calculated and the statistical histogram is modified. Finally the bright values of the pixels of the image are changed. An embedded high speed image enhancement processing system on high performance DSP TMS320DM642 and FPGA was designed. Experimental results with real images shown that the system can improve the contrast of the infrared image, limit the noises of the enhancement image, and effectively enhance the infrared image, the running time of the program is shorter, so it can meet the requirements of real-time in the project.
Investigation on Chip Formation during Machining Using Finite Element Modeling
Authors: Ali Moaz H. , Khidhir Basim A. , Mohamed Bashir , Oshkour A.A.
Published: June 2012

Titanium alloys are desirable materials for aerospace industry because of their excellent combination of high specific strength, lightweight, fracture resistant characteristics, and general corrosion resistance. Therefore, the chip morphology is very important in the study of machinability of metals as well as the study of cutting tool wear. The chips are generally classified into four groups: continuous chips, chips with built-up-edges (BUE), discontinuous chips and serrated chips. . The chip morphology and segmentation play a predominant role in determining machinability and tool wear during the machining process. The mechanics of segmented chip formation during orthogonal cutting of titanium alloy Ti–6Al–4V are studied in detail with the aid of high-speed imaging of the chip formation zone. The finite element model of chip formation of Ti–6Al–4V is suggested as a discontinuous type chip at lower cutting speeds developing into a continuous, but segmented, chip at higher cutting speeds. The prediction by using finite-element modeling method and simulation process in machining while create chips formation can contribute in reducing the cost of manufacturing in terms of prolongs the cutting tool life and machining time saving.
Analysis of Flying Vehicle Cooperative Positioning by Sea-Surface Wireless Sensor Networks
Authors: Xu Wei Ming , Yin Xiao Dong , Wang Geng Feng
Published: June 2012

Sea-surface wireless sensor networks (S2WSN) is a combination of many nodes forming a certain geometric shape, such as ships and sea-surface radio buoys. To satisfy the requirement of precise tracking for flying vehicle (FV) in times of exterior location datum outages, a cooperative positioning algorithm (CPA) for the FV is proposed. Time synchronization among the nodes is crucial to guarantee CPA. Taking a single-hop S2WSN as an example, the problem of low synchronization precision is resolved by two-way timing with unequal reply time (TWT-UTD). Monte Carlo simulation results show that, through optimizing the position dilution of precision among the sea-surface nodes and the FV, the absolute bias of the FV tracking by the proposed CPA is superior to that of the conventional single ship-based relative positioning method. Meanwhile, the synchronization precision is increased by more than 20% via TWT-UTD method.
A High-Gradient Magnetic Separation System for Separating Magnetic Nanobeads from Aqueous Solution
Authors: Yan Xiao Fei , Lin Jian Han , Wang Rong Hui , Wang Mao Hua , An Dong , Li Yan Bin
Published: June 2012

Magnetic separation is an emerging and promising technology in biological sample preparation. In this paper, a high-intensity and high-gradient magnetic separation system was developed to separate magnetic nanobeads from aqueous solution. This system mainly consisted of a magnetic separator, a micropump and an electronic timer. The magnetic separator was designed by placing two columns of permanent magnets in an aluminum holder. Two magnets in each column were laid out in repelling mode and a hole between the two columns was used to accommodate a 1.5 ml tube. Working with the electronic timer, the micropump was employed to remove waste solution at a certain rate after magnetic nanobeads captured onto the sides of the tube wall. The experiments for separation of magnetic nanobeads with diameters of 150 nm and 50 nm using the developed magnetic separation system were conducted to optimize the key parameters of the system including nanobeads concentration, separation time and flow rate. The separation efficiencies of magnetic nanobeads increased as the nanobeads concentration and the separation time increased, whereas decreased when the flow rate was increased. Experimental results proved that the proposed magnetic separation system was able to separate magnetic nanobeads (diameters of 150 nm and 50 nm) with separation efficiencies of 99% and 90% in 30 min and 150 min respectively.
Flow Investigation on Different Combustion Chamber Configuration in a DI Diesel Engine – A CFD Approach
Authors: Gnana Sagaya Raj A. , Mallikarjuna J.M. , Ganesan V.
Published: June 2012

The main objective of the present investigation is to make a computational study of flow structure inside the engine cylinder in a DI diesel engine during the end of compression stroke at an engine speed of 1000 rev/min. The analysis has been carried out for four different piston configurations viz., flat piston, centre bowl on flat piston, inclined and inclined offset bowl piston. A polyhedral trimmed cell has been adopted for meshing the geometries using the code called STAR-CD Es-ice. The flow has been simulated by solving the governing equations of conservation of mass, momentum and energy using the SIMPLE algorithm. From this numerical prediction, the best possible combustion chamber configuration and the location of fuel injector on the cylinder head have been arrived.
Analysis on Coupling of Laminated Elastic Beam Element and the Shock Pressure of Surrounding Rock of Roadway
Authors: Wei Jin , Kou Zi Ming , Wang Wang
Published: June 2012

Based on the rock pressure tunnel support present situation carries on the analysis, the laminated elastic beams of high support ability and impact resistance was designed.Therefore, through assumptions and establishment of mathematical model, and the application of viscoelastic beam dynamics equation, deformation and energy absorption of the laminated elastic beam elements,under the condition of rock burst, was deduced. According to the load - displacement characteristic curve, the coupling of laminated elastic beam elements and rockburst in coal mine roadway was analysed. This can provide a new method in the field of safety production of mining and roadway.
STM Self-Calibration Technique Based on Image Stitching
Authors: Wang Li Na , Yin Bo Hua , Han Li
Published: June 2012

Scanning tunneling microscope (STM) has several advantages, such as high resolution, and is wildly used. Piezoelectric scanner brings the horizontal resolution of STM up to 0.1 nm, and is it derived by piezoelectric ceramic. Piezoelectric scanner has piezoelectric ceramic’s character. So, piezoelectric scanner output must be calibrated at regular intervals. Graphite atom arrange in a special manner. In the same layer, the distance between adjacent atoms is the same, 0.25nm. This feature can be used to measure length and calibrate small scale scanning. For the 512 × 512 resolution image, the maximum scan range that can distinguish atoms is 30nm2. More large area of atomic image needs to use image stitching technology. By image stitching, small scale scanning, less than 1μm can be calibrated.
Formation and Characterization of Shellac Phthalate Succinate through Organic Solvent-Free Reaction
Authors: Sangnim T. , Nunthanid J. , Luangtana-Anan M. , Limmatvapirat C. , Limmatvapirat Sontaya
Published: June 2012

The objective of this study was to synthesize shellac phthalate succinate (SHL-PHT-SUC) through organic solvent-free reaction. Firstly, shellac phthalate (SHL-PHT) was prepared by co-grinding and annealing shellac (SHL) with phthalic anhydride (PHTA). The SHL-PHT was subsequently ground with succinic anhydride (SUCA) and activated by the same process to obtain SHL-PHT-SUC. The formation of all SHL derivatives was investigated by the monitoring acid value, insoluble solid and later confirmed by FTIR spectroscopy. The result indicated that the acid value was increased after annealing SHL-PHT with SUCA, suggesting the addition of succinate moiety at SHL-PHT molecule. The presence of C-O stretching of ester linkage was also observed in the FTIR spectrum. The results suggested the formation of SHL-PHT-SUC by esterification. In addition, the thermal stability was assessed by ageing the SHL derivatives at 100°C for 24 h. The SHL-PHT-SUC demonstrated lower stability as compared to SHL-PHT. The stability of SHL derivatives appeared to be related with the cross-linking of the polymer chain. In the case of SHL-PHT-SUC, succinate group, having more molecular mobility, this might encourage fast and extensive cross-linking as compared to the phthalate group and thus promoted the ageing process.