bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of a 6-DOF VCM-Driven Micro Stage
Authors: Jeong Jae Heon , Kim Myeong Hyeon , Woo Si Woong , Ahn Da Hoon , Hong Dong Pyo
Published: February 2014

This paper presents design of micro stage performing 6 degree-of-freedom (DOF) motions, which actuated by voice coil motor (VCM). The VCMs generate forces to perform in-plane motions and out-of-plane motions. The stage is supported by springs for compensating mass of the moving part of the stage and the stiffness of the springs has been chosen to meet the moving range requirement and to have high resonant frequency at the same time. Moving magnet type has been selected against moving coil type due to few merits of the type. The size of the stage is 380 X 380 X 60 mm3 and the motions are measured by laser interferometer and gap sensors.
Study on Nonlinear Backlash of Shipboard Antenna Servo System
Authors: Zhu Dong Xu , Fu Gang , He Qian
Published: February 2014

Shipboard antenna tracking servo system uses dual-motor technology to overcome the anti-backlash backlash nonlinear transmission system, but when the load torque change quickly or commute, there will be two the motors case through the backlash or one motor at a faster speed bumps tooth surface phenomenon, thereby causing oscillation of the antenna load. Based on the established system model includes aspects of backlash on the system, the amplitude-frequency characteristic analysis, the first, with the increase in the width of the backlash, reduced bandwidth of the system, corresponding to a slower response systems, the more severe the delay, backlash when the end of the second drive, the driven part produced by the collision velocity inconsistent with increasing width of the backlash. the larger of speed control difference of PID becomes, the more serious such a collision. Resulting in the oscillation is possibility, the bandwidth of the system becomes narrow in the amplitude-frequency characteristic diagram.
Vibration Test and Fault Diagnosis for Main Hoist Gearbox of Heavy Casting Crane
Authors: Li Zhang , Wang Xing Dong , Hu Chang Yi , Chen Chi Zhong , Ming Li
Published: February 2014

In view of the structure and running characteristics of gearbox of large and special crane, we have respectively carried out vibration test of fault and free-fault gearbox containing planetary gear in the work. With the help of Matlab engineering software, we can read and process the collected vibration signal of gearbox and draw the time-domain and frequency-domain graph. Through the comparative analysis of vibration information of gearboxes, we can determine the link between fault type and signal characteristic value, effectively realize the fault diagnosis of gearbox.
Statics, Instantaneous Kinematics and Singularity Analysis of Planar Parallel Manipulators via Grassmann-Cayley Algebra
Authors: Wen Ke Fei , Lee Jeh Won
Published: February 2014

The wrench Jacobian matrix plays an important role in statics and singularity analysis of planar parallel manipulators (PPMs). It is easy to obtain this matrix based on plücker coordinate method. In this paper, a new approach is proposed to the analysis of the forward and inverse wrench Jacobian matrix used by Grassmann-Cayley algebra (GCA). A symbolic formula for the inverse statics and a coordinate free formula for the singularity analysis are obtained based on this Jacobian. As an example, this approach is implemented for the 3-RPR PPMs.
Designation and Optimization of an Offset Self-Adaption Centralizer with Three Pairs of Arms
Authors: Gong Xian Feng , Zhu Yong
Published: February 2014

Crawler robot is used in horizontal well logging.Centralizer is the support device to center robot in oil pipe while operating,which is used for reducing the friction and obtaining more accurate measurement.The designation of an offset self-adaption centralizer with three pair of arms is proposed,combining with the characteristics between the centered centralizer with three pairs of arms and the offset centralizer with four pairs of arms in this paper.In order to adapt the narrow pipe and gain better performance,the multi-objective optimization model is built,which is based on the minimum spring force and the shortest central arm.The optimization is processed by MATLAB.
Study on the Relationship between Impeller Design Parameters and Performance of Partial Emission Pump Based on CFD Technology
Authors: Zhang Li Sheng , Jiang Jin , Xiao Zhi Huai , Li Yan Hui
Published: February 2014

In this paper, the relationship between impeller design parameters and performance of a partial emission pump is studied by numerical simulation. Nine straight radial impellers with different blade ratio γ (short blade length to long blade length ratio, γ=50%, 70% and 90%) and different front inclination angle β (β=8, 12 and 16 degree) were designed, while the rest geometric parameters of the pump were kept unchanged. All the numerical simulations were carried out by using the commercial software FLUENT V12.1 based on the Realizable k-ε turbulent model. The results showed that with increasing of front inclination angle, the capacity-head curve drops, the maximum head all appears at blade ratio γ=90%. The static pressure increases with increasing radius. A separation bubble can be observed at the outlet of diffuser tube.
Identification of Surface Crack in Steel Rods Using Wavelet Transform Modulus Maximum on Vibration Mode
Authors: Sun Hong Chun , Zhang Ling Ling , Zhao Bei Ming
Published: February 2014

The traditional identification method of surface crack has some shortcomings such as detection equipment complex, high requirements for operator and not suitable for large-scale structure inspection, vibration method is applied to identify surface crack in steel rods in this paper, using the method of calculating modal analysis combined with time-frequency wavelet analysis. The research on damage identification is performed on steel rods with different deep crack. The research results show that the accurate damage location can be judged by wavelet modulus maximum and the quantitative analysis of single crack identification can be achieved by constructing mathematical expressions of a single crack damage degree and damage index Lipschitz index. The research would province some guidance for engineering applications.
Study on Linear Active Disturbance Rejection Control Technique and its Application in Ship-Borne Servo Control System
Authors: Zhu Dong Xu , Fu Gang , Liu Yang , He Qian
Published: February 2014

In order to improve the rejection ability of the boat rocking disturbance and wind load disturbance on Ship-borne Servo Control System, the position linear ADRC (LADRC) is designed. First, mathematical model of Ship-borne Servo Control System is established, and PID control method is used for simulation. Methods used LADRC, estimated and compensated the wind disturbances and boats rocking disturbances, greatly. The simulation results show that ADRC method for active immunity, which greatly improves the immunity system and tracking accuracy, and the parameter adjustment is simple, just adjust a parameter can get good control performance.
Projectile Material Model Included Phase Transformation Erosion
Authors: Wang Jiang Bo , Zhang Qing Ming , Xu Gui Ying , Chen Wen , Feng Cheng Liang
Published: February 2014

High temperature generated by target impact causes projectile austenite phase transformation. At high temperature, the austenite strength decreases rapidly and undergoes phase transformation erosion because of target impact. On this basis, a projectile material model which took phase transformation erosion into consideration was established and then the model was verified. Model simulation showed that after phase transformation erosion the projectile was subjective to tensile and compression instability. Dual-arc head design would significantly reduce projectile penetration resistance and decrease phase transformation influence on projectile stability.
Research on System Reconfiguration Technology of Distribution System Single-Phase-to-Earth Fault
Authors: Cai Bo
Published: February 2014

Distribution network can operate with electricity for 1~2 hours after single-phase to-earth fault happening, so its network reconfiguration is different from not only reconfiguration in normal situation but also reconfiguration in fault situation and it should consider more factors. This paper puts forward a kind of improved branch exchange algorithm which all power supply restoring areas are divided into two groups: group A which are branch circuits on the same bus of fault line and group B which are power supply restoring lines on the different bus of fault line. For all power supply restoring lines of two groups, when voltage satisfies the constraint conditions, dispatcher prior chooses power supply restoring line which has minimum network loss value in group A in order to avoid outage during process of power supply restoring. Actual flied operation shows that this measure satisfies practical requirements.
Structure Optimization on High-Speed Electromagnetic Repulsion Mechanism
Authors: Dong En Yuan , Liu Mei Wei , Li Zhi Bing , Yan Xiang Lian , Chen Yu Shuo
Published: February 2014

High speed mechanical switches are gradually becoming a research hotspot in power systems, for its fast switching speed, large conduction flow and voltage-withstanding. Among them, the core design of the switches focuses on optimal design of the structure of repulsion actuator. Besides traditional factors like coil turns, capacitance, voltage, which affect the output power, the material and structure of coil frame, the enclosure of repulsion mechanism are found to be important factors in this paper. Based on finite element analysis and simulation of repulsion mechanism, a novel prototype was designed, and the simulation results were verified by experiments. Moreover, during opening process of switch, the repulsion mechanism coupled with either assistant spring or assistant opening coil in permanent magnetic actuator (PMA) are compared by experiments. The results show that the switch has smaller opening oscillation and simpler structure through using assistant opening coil. This paper has provided a better guidance for the development of high-speed repulsion mechanism in interrupters.
Design and Implementation of Actuator Controller for Greenhouse Control System
Authors: Gao Yi Chuan , Liu Guo Chang
Published: February 2014

A novel actuator controller for greenhouse control system is proposed in this paper. This controller can solve the problems existing in traditional greenhouse control system such as generating electric arc, short circuit risk, lack of communication and smart ability. We adopt five separate magnetic latching relays to control the three-phase motor. In order to prevent generating electric arc in the process of turning off relay, the alternating current zero-crossing detection circuit is designed. In software side, the relay-off task program is running in the real-time operating system, which can ensure turn-off operation at the point of alternating current zero-crossing. In addition, the controller is capable of detecting motors operation parameter and having multiple communication interfaces. Finally, we implement our controller in practice and experimental results meet the design requirements.
Research on Product Design Process Driven by Customer Value Theory
Authors: Zhang Cheng Ye , Tan Run Hua , Cao Guo Zhong
Published: February 2014

To build sustainable competitive advantage, being real customer-oriented, the integrated study of customer value guiding product design process research is proposed. By analyzing the connotation of customer value theory, the distinction between customer value-oriented product design and the traditional design is discussed. The basic principles of customer value-oriented product design are also put forward. Finally, the process model of customer value oriented product design, which consists of two parts, value design and concept design. According to this model, customer value space can be identified and path to creating and realizing customer value is given, enabling the practitioners to find new directions to create value for customers.
An Approach of Systematic Engineering of Green Manufacturing Based on Optimization of Resources and Environmental Attributes
Authors: Zhao Gang , Guo Li Ming , Zhang Zhang , Zhang Ye Xiang
Published: February 2014

In order to meet manufacturers needs of making progresses in environmental techniques, a practical approach of systematic engineering of green manufacturing (SEGM) based on the optimization of resources and environmental attributes has been applied to plan some general mechanical productions running in a system of workshop. The influencing factors involved in manufacturing productions and the operational and scheduling parameters oriented to environmental attributes is discussed and solved. The solution of the operational variables determines the practical details of the resources and energy running in workshop productions. A practical case for thermoelectricity valves is studied in this paper. Evident clues verify that SEGM approach has taken some optimistic effects on the resources and environmental attributes of general productions in workshop system.
Nondestructive Technique for the Determination of Cracks Parameters by Eddy Current in Differential Mode
Authors: Harzallah Salaheddine , Chabaat Mohamed
Published: February 2014

In this paper, a nondestructive technique is used as a tool to control cracks and microcracks in materials. A simulation by a numerical approach such as the finite element method is employed to detect cracks in materials and eventually to study their propagation using a crucial parameter such as the stress intensity factor. This approach has been used in the aircraft industry to control cracks. Besides, it makes it possible to highlight the defects of parts while preserving the integrity of the controlled products. On the other side, it highlights the reliability of the control of defects and gives convincing results for the improvement of the quality and the safety of the material.
Research of Shock Wave Damage Evaluation Method Based on LY-12 Effect Plate
Authors: Li Li Ping , Kong De Ren , Zhao Chuan Rong , Hang Yu , Yang Fan , Gu Ting Wei
Published: February 2014

This paper discusses the problems in electrometric method of measuring shock wave pressure, including frequency characteristic and installation method of the sensor, parasitic effect in damage conditions, as well as the unduplication of measuring environment and so on. These problems will lead to serious distortion. In this paper, on the structural characteristics of damage target, shock wave equivalent target method is proposed. The article discusses the use of methods and principles of equivalent target, uses the finite element software to do modal analysis with 1.5mm thickness aluminum plate and analyses the effects of shock wave to simulation results with different rise time, positive pressure time and specific impulse. Through sequentially loading gradient in 0.005Mpa~10MPa range to LY-12 aluminum plate in size of, target plate deformation damage can be observed. By using finite element numerical simulation, shock wave power of different equivalent explosion field can be reflected qualitatively.
Mechanism Study of Acoustics Method for Dryness Measuring and Model Establishment
Authors: Han Jian , Wei Yun Feng , Huang Ying
Published: February 2014

Combining acoustic theory and thermodynamic properties of water and steam, the density and sound velocity change with pressure and temperature, and the acoustic wave at the same temperature, the same pressure of gas-liquid two phase flow in the corresponding content of different causes the sound speed change are studied.. Set up steam model formula and the speed of sound, results showed that, water and water vapor velocity and density affected by temperature, pressure changes are different, steam quality measurement by acoustic method is feasible.
The Numerical Simulation for Engine Oil Filter Shell
Authors: Li Yang , Zhou Yong , Sun De Ming , Wang Zhong Lei
Published: February 2014

For the complex shape and difficult forming of engine oil filer shell, this paper aims to do research on stamping technology and mold of engine oil filer shell. Based on the calculation and analysis of the forming technology according to its characteristics,the forming process is optimized, which includes 6 steps: blanking and drawing, re-drawing, 3rd-drawing, reshaping, beading and trimming, punching and flanging. Then for the importance of multi-drawing process, the numerical simulation of the multi-drawing process has been carried out by using the Dynaform software. The results show that the good piece of the oil filter shell can be drawn from sheet material through the 6 steps one by one. Finally, according to the results the molds are designed.
Application of Rapid Prototyping Technology in Automobile Manufacturing Industry
Authors: Li Peng Cheng , Huang Shuang Cheng
Published: February 2014

Rapid prototyping technology manufactures the product prototype can be generated directly from 3D CAD data and can be regenerated easily after the design was modified. This paper introduces the principle of rapid prototyping technology and the applications of rapid prototyping technology in automobile design, development and production. It is notable that the rapid prototyping technology is an effective tool to reduce the development cost of automobile products and shorten the development cycle.
Analysis on the Development of Residential Building Energy Conservation
Authors: Huang Jia Hui
Published: February 2014

Building Energy Conservation, especially the research about residential building energy in face of the worldwide energy crisis is particularly urgent. At present, various countries have an in-depth study of the residential building energy to explore different methods, new building materials, and new technology(such as new thermal windows and doors), as well as the use of new energy has been put more attention to in energy conservation field. Comparing the residential buildings between domestic and overseas countries’ progress about related technologies, we could find some evolution and look to the prospects for the future in energy-saving field. We took a domestic project that used energy-saving technology as a practical example, and then made a simple overview of the current energy situation in China so as to get a glimpse of the development about residential building energy-saving. Finally, the article provided some comments about this topic in sustainable view.
Chaotic Threshold for Axial Loaded Beam Bridge under Moving Loads
Authors: Yang Shi Zhu , Yang Xin Wei
Published: February 2014

We studied chaotic threshold of a nonlinear dynamical system of beam bridge. The amplification and minification of integral inequality are proposed, which lead to the criteria for chaotic motion directly for the nonlinear system with a half sine pulse excitation avoiding the conventional approximation methods to retain the nature characteristics of the system. The efficiency of the criteria for chaotic motion obtained by use of the Melnikov's method is verified via the bifurcation diagrams, Lyapunov exponents and numerical simulations.
Analysis about Effect of Hollow on Time-Frequency Characteristic of Surface Vibration Signal
Authors: Zhao Ming Sheng , Chi En An , Kang Qiang , Tao Tie Jun
Published: February 2014

In blasting excavation of shallow tunnel, the surface vibration of excavated tunnel can be amplified due to effect of hollow. This effect is an important factor for safety of surface buildings. Based on the measured data of one tunnel excavation project, combining wavelet analysis and AOK time-frequency distribution method, the surface vibration signals in front and rear position of working face are processed into different frequency bands. Taking PPV, dominant frequency, d7 (7.8125-15.625 Hz) band energy ratio and d7 (7.8125-15.625 Hz) band energy duration as indexes, the effect of hollow on time-frequency characteristics of surface vibration signal is studied in this article. The results show that, affected by the hollow in excavated region, the PPV and dominant frequency increase, and the d7 (7.8125-15.625 Hz) band energy shows fluctuant ratio of total energy and an increase of band energy duration. The results show that the hollow influence on the frequency characteristics of the surface vibration signals comprehensively, and also provide an analytical basis for anti-vibration and vibration reduction study from the angle of energy.
City and Environment Based on the Sports Building
Authors: Chen Xiao Jie
Published: February 2014

The rapid development of the city and the environment resulting in the deterioration of the overall force, people began to face the city environment. If the city space environment of metaphor from the macro as a whole, so the sports building is the city's unit, a city, region and the whole city environment organic synthesis. The overall layout of sports buildings should echo the city space, the main features and figure should constitute the area and the surrounding environment, but also with other city environment unit coexistence, dialogue, promote each other, so as to fully reflect the city space environment integrity and vitality.
Multi Object Detection and Tracking from Video File
Authors: Krerngkamjornkit Rapee , Simic Milan
Published: February 2014

This paper describes computer vision algorithms for detection, identification, and tracking of moving objects in a video file. The problem of multiple object tracking can be divided into two parts; detecting moving objects in each frame and associating the detections corresponding to the same object over time. The detection of moving objects uses a background subtraction algorithm based on Gaussian mixture models. The motion of each track is estimated by a Kalman filter. The video tracking algorithm was successfully tested using the BIWI walking pedestrians datasets [. The experimental results show that system can operate in real time and successfully detect, track and identify multiple targets in the presence of partial occlusion.
GPR Wave Velocity Estimation Based on the Method of Curves Character and K-Means Clustering
Authors: Qiao Xu , Zhang Hao , Liu Tong , Zhang Yuan Yuan , Xia Yun Hai , Yang Feng
Published: February 2014

According to the need of ground penetrating radar (GPR) measurement of underground targets, we proposed a new method for the prediction of wave velocity. This method based on radar image curves and K-means clustering algorithm, and we can predict the wave velocity accurately. Proved by the experiment, the calculation precision of this method is higher. Although there are some errors in measurement results, it has good robustness to get it corrected.
Simulation Research of Feature Extraction Method Based on Nonlinear Manifold Learning
Authors: Xiao Hai Bing , Xie Xiao Peng
Published: February 2014

This paper deals with the study of Locally Linear Embedding (LLE) and Hessian LLE nonlinear feature extraction for high dimensional data dimension reduction. LLE and Hessian LLE algorithm which reveals the characteristics of nonlinear manifold learning were analyzed. LLE and Hessian LLE algorithm simulation research was studied through different kinds of sample for dimensionality reduction. LLE and Hessian LLE algorithm’s classification performance was compared in accordance with MDS. The simulation experimental results show that LLE and Hessian LLE are very effective feature extraction method for nonlinear manifold learning.
The Auto Restoration of Paper Fragments Rules Based on the Traveling Salesman Model
Authors: Zhou Ao Jun
Published: February 2014

The restoration of regular paper fragments can be solved just as the Traveling Salesman Problem. Paper pretreatment and edge matching are the main steps during the restoration process, which contain binarization, screening between the left and right boundary depending the width of paper margins. For some longer paper fragments, the transverse splicing can be realized with Greed Algorithm. But the algorithm will get a non-ideal restoration for more fine paper fragments. Therefore the noise-suppressed processing before clustering from line to line through projection is essential in order to make sure that the regular English fragments can get the regularity like Chinese characters. The two experiments get an 100% correct rates when using the method combining the improved genetic algorithm for traveling salesman problem.combining the improved genetic algorithm for traveling salesman problem.
Index Optimization and Integrated Loop Control of Heating Furnaces Based on Modern Control Theory
Authors: Feng Ran Bao , Chen You Wen , Gao Jian Min
Published: February 2014

The furnace temperature control plays an important role in the rolling process, it affects the quality of steel and energy consumption directly. It is clear that furnace temperature change is multivariable, nonlinear, coupling, great inertia and pure lag and the complex industrial process of furnace control should be optimized. In this paper, a intelligent temperature control system was designed which has a two-layer structure includes optimizing and controlling. The control system is successfully applied to a steel company in medium plate product processes, and achieved good effects. The controllability can be applied to similar industrial furnaces, and has a wide application prospect.
Study on the Detection and Selection of Bearing Diameter Based on Machine Vision System
Authors: Yu Fu Sheng , Yin Sheng Jiang , Li Teng Fei , Sun Zhong Guo , Shi Wei Kang
Published: February 2014

A new method and system for inspecting the bearing diameter is developed. The mechanical and movement control units, as well as its machine vision system, are designed. A precision measuring method based on machine vision system is developed to measure bearing diameter. Computer outputs the bearing edge contour and its three-dimensional coordinates after image processing software process the image of bearings which are collected by CCD camera. The controller controls the operation of motor by ball screws and drives the movement of individual parts which can crawls the gripper in the three-dimensional coordinates. Inductive gage is used to measure bearing diameter. Besides, a technology roadmap of image edge character detection is analyzed .Gaussian filter is used to noise reduction of the image and canny operator is used to edge detection. Template match is adapted to the automatic recognition of bearing characteristics. The paper may be helpful to those who work on the same subject in future.
Study on the Traction Motor Characteristic for Hybrid Electric Vehicle
Authors: Wang Wei , Shi Guang Kui , Zhang Hong Wei
Published: February 2014

The basic characteristic for traction motor of hybrid electric vehicle affected the dynamics, economy as well as reliability performance for the vehicle directly. The paper derived all kinds of requirements for traction motor according to how improve the overall performance for vehicle. The control mode, static characteristics and dynamic characteristics for the traction motor were separately proposed, and performance index for traction motor were quantitative or quantitative analyzed. As a result, theoretical principle was supplied for parameter matching and evaluation for traction in this paper.
Design of Lead-Acid Battery Management System
Authors: Chen Wei Hua , Che Yan Bo
Published: February 2014

In the charge and discharge system of lead-acid battery, in order to ensure the normal operation of charge and discharge, and to prolong the service life of lead-acid battery, battery management system (BMS) must be built up for lead-acid battery. The battery management system detects each index of battery to prevent over charge and over discharge appeared. In this paper, the function of battery management system, detection of battery voltage and battery current are researched. The lead-acid battery management system is designed to achieve the purpose of real-time monitoring of the lead-acid battery.
Fault Diagnosis of the Armored Vehicle Gear Transmission System Based on Response Analysis
Authors: Yao Zhu Ting , Pan Hong Xia
Published: February 2014

Gear transmission system is as an important part of the armored vehicle, and its work reliability is directly related to the working performance of the armored vehicle. Based on introducing the need on condition monitoring and fault diagnosis of gear transmission system, the response methods on condition monitoring and fault diagnosis are expressed in the gear transmission system. Finally, an armored vehicle transmission system is as the research object, the test point selection, data acquisition and processing is studied. The paper shows how to use differ method such as the amplitude domain, frequency domain, demodulation analysis and wavelet analysis to extract fault characters and fault identification in the armored vehicle gear transmission system.
Reactive Power Compensation for Unbalanced Fluctuating Loads by Using Two-Dimensional Space Vector and a Static Var Compensator
Authors: Wu Chi Jui , Liu Yu Wei , Huang Shou Chien
Published: February 2014

To modify the power factor and balance the three-phase currents simultaneously, this paper proposes the instantaneous compensator to calculate the compensation current. The instantaneous compensator utilizes two-dimensional instantaneous space vector and setting the active power as a constant for each cycle which can improve power quality effectively. Moreover, the instantaneous compensator requires an independent power source, whose capacity can be reduce by using a static var compensator (SVC). An SVC does not interfere with the capability of the instantaneous compensator. Field measurement data were analyzed. Simulation results confirmed the feasibility of correcting the power factor and balancing load currents simultaneously using the proposed method.
Research on Hydro-Dynamic of Column Body Water-Entry with Six-DOF at High-Speed
Authors: Wu Shan Qi , Kang Xing Wu
Published: February 2014

By using the commercial CFD software Fluent6.3, the three-phase (water, air, vapour) flow field with natural cavitation was established. The UDF(User Defined Function) was used to resolve and control the missiles movement. It realized the numerical calculation of unsteady high-speed water-entry flow field, which consider natural cavitation as well as the missiles multiple degree of free movement. In this paper, the missile high-speed water-entry flow field with different attitude angle were simulated and analyzed, and the influence of the attitude angle on the flow field were gained.
Information Integration System Based on Ontology
Authors: Huang Gang , Wu Xiu Ying , Yuan Man
Published: February 2014

This paper studies Ontology-based information integration system and its implementation methods, the use of XML and RDF semantic description of the content of the information, so that these data are no longer just for the line search, this simple retrieval methods do not take full advantage of the information content the potential of the machine to understand the basis of the information content, the application can be completed more intelligent reasoning queries.
Study on Storage and Query System of Legal Documents
Authors: Yang Liu
Published: February 2014

There is a logically centralized level global data centers to meet the global schema database for centralized storage needs. This will not only ensure efficient query dataset brings advantages, without compromising the autonomy of each data source. Logically centralized layer needs to have at least a central database, data dump module. This paper studies storage and query system of legal documents based on the information integration system and its implementation methods, the application can be completed more intelligent reasoning queries.
Thinking about the Visual Design into Lifestyle Changes
Authors: Chen Ying Yan
Published: February 2014

The visual design has been gradually evolved into information design, which reflects the intuitive, rich, deep, and other features. The visual effects of the deep, and if the life into the visual information, and to the human creation of a convenient and viable way of service in no doubt will greatly enhance the quality of life, and perhaps this is the concept of human life have a significant impact. This article from a visual design ways of thinking, expression, etc. In-depth research, with a focus on exploring and lifestyle combined with the feasibility, and the corresponding argument.
Eco Thai Hand-Woven Cotton Fabric for Unisex Apparel Design
Authors: Ruangnarong Chanakarn
Published: February 2014

Thai hand-woven cotton fabric has the added value of allowing more air penetration and is therefore cooler, softer and absorbent therefore the objective of this research is to develop Unisex Apparel Design from hand-woven cotton with freedom of Seventiess inspiration, which is designed a collection for both males and females. This design fulfills the consumer lifestyle since the consumers have to be aware of the cost of living in economic fluctuation. In other words, they still maintain the urban lifestyle combined with the Thai tradition. Thai hand-woven cotton known as one of Thai handicraft identities is selected to provoke the Thai hand-woven awareness in young Thai generation for its value and beauty and to increase the demand of Thai hand-woven material. Following the fashion trend of year 2013-2014 Spring/Summer, the research is to create a special collection of 4 items The research is measured in percentage using questionnaires to 100 sample target groups. The result has shown that the third item, Drift pants is of the highest satisfactory which is about 81%. The result finds that about 86% of the sample target groups are most satisfied with the unisex apparel designs.
Research on Risk Transmission and Diffusion of Clusters Based on Structural Theory
Authors: Huang Chun , Wu Min Hui
Published: February 2014

Cluster risk as the most important factor of regional economic development is attracting more and more scholars attention. With a new perspective, this paper analysis of network structure, from the cluster type, cluster network, cluster risk evolution to a literature review, and analysis of its future trend.
Analysis on Factors Affecting the Employment of Landless Peasants Based on Simulated Annealing Genetic Algorithm
Authors: Zhu Zhong Hao
Published: February 2014

In national plan of twelfth five-year, orchestrating city-country development and accelerating process of urbanization will be one of the leading strategies. Large areas of farmland turn to non-agricultural irreversibly in the process of accelerating urbanization, the existing land expropriation system running by planned economic system damage farmers’ rights and incomes. Therefore, as vulnerable groups, landless peasants’ employments need more concern. The study takes Zhenjiang city for an example, proposes a factor selecting method based on the simulated annealing genetic algorithm (SAGA). The factor selecting method is proposed from each subspace, which combines the simulated annealing algorithm with the genetic algorithm in choosing different cross-over and mutation probabilities, as well as mutation individuals. Experimental results show that achieving a significant increase in the employment rate is possible using SAGA obtained from the proposed approach.
Design and Fabrication of Model Feed Pelletizer
Authors: Abubakre O. K , Garba A. B , Tukur Hassan
Published: February 2014

This research is on the design, fabrication and testing of motorized mechanical feed pelletizer to meet the basic needs of researchers and commercial animal farmers at affordable cost. This research is aimed at providing local technology and skills, making available the machine in the local markets and consequently reducing or eliminating the prohibitive cost of importation. Feed manufacture involves grinding, mixing, extruding ingredients into homogeneous pellets that are water stable, and consequently drying the feed to the required moisture level. The fabrication finds its application in the mixing and pelletizing of domestic animals feeds and aquatic (fish) dietary that require the above processes. In the design and fabrication of this device, focus was directed to obtain a prototype (model) that would function at relatively low energy expenditure. The fabrication involved machining and welding among other processes. Almost all the materials used were sourced locally. The machine was tested and its efficiency increased with increase in die size. The throughput efficiency and feed rate for 7mm diameter die were found to be 97.8% and 0.0407 respectively, whereas 95% and 0.0267 were found to be for the 5mm diameter die.
Velocity Statistics of a Fully Pulsed Round Jet in Streamwise Direction
Authors: Pratomo Hariyo P.S. , Bremhorst Klaus
Published: February 2014

In this paper, statistical quantities of a fully pulsed round jet along the jet centerline are reported. A range of the Reynolds (1.5 x 104 < Re < 4 x 104) and Strouhal (0.0064 < St < 0.0076) numbers is used to generate the jet. Physically this unsteady jet produces a series of distinct pulses due to the excitations. The mechanically excitations lead to the appearance of pulse dominated and high turbulence steady jet region in which their existence is of a strong dependence on the level of the controlled parameters. After the pulse merging completes the pulsed jet alters to a self-preserving steady jet with a significantly higher turbulence intensity. Under a constant mass flow rate the pulsed jet tends to be more fluctuating at a less intense pulsation thus permitting the endurance of the normalized periodic component and a more rapid velocity decay in the pulse-dominated region.
Adaptive System Development for Secondary Skin
Authors: Sjarifudin Firza Utama
Published: February 2014

This paper will cover the development of Adaptive secondary skin system. Adaptation is essential to managing the problem of climate change. In order to meet this growing challenge, the system will propose a new generation of secondary skin that optimize their configuration in real time by responding to environmental. Performance-based technologies in architectural element have barely lived up to their full potential. The secondary skin system is developed using kinetic object method that could generate changeability in its shape, pattern, and orientation that was controlled by actuators. These actuators received inputs from surrounding environmental data. Furthermore parametric tools, sensors, and environmental modeling was used to create truly dynamic and responsive secondary building skin.
A New Method for Equilibria and Stability Analysis of Nonlinear Dynamical Systems
Authors: Cao Long , Cao Yi Hua
Published: February 2014

A novel method based on numerical continuation algorithm for equilibria and stability analysis of nonlinear dynamical system is introduced and applied to an aircraft vehicle model. Dynamical systems are usually modeled with differential equations, while their equilibria and stability analysis are pure algebraic problems. The newly-proposed method in this paper provides a way to solve the equilibrium equation and the eigenvalues of the locally linearized system simultaneously, which avoids QR iterations and can save much time.
Inverse Kinematic Solutions Using Artificial Neural Networks
Authors: Petra Iskandar , de Silva Liyanage C.
Published: February 2014

Inverse Kinematics solutions are needed for control of robotic manipulators for successful task execution. It is the process of obtaining the required manipulator joint angle values for a given desired end point position and orientation. In general the process of obtaining these joint angle values is a complex process that may require some higher computational power in the hardware. Mainly there are three traditional methods used to solve inverse kinematics problem, namely; geometric methods, algebraic methods and iterative methods. Apart from these traditional techniques researchers have looked into the use of Artificial Neural Networks (ANNs). In this paper we re-visit these non-traditional techniques and compare the advantages and disadvantages of each method.
Strength of Concrete Containing Rice Husk Ash Subjected to Sodium Sulfate Solution via Wetting and Drying Cyclic
Authors: Che Norazman Che Wan , Jaya Ramadhansyah Putra , Dewi Sri Jayanti , Bakar Badorul Hisham Abu , Fadzil M.A.
Published: February 2014

The influences of different replacement levels of rice husk ash (RHA) blended cement concrete subjected to 5% Na2SO4 solution via wetting-drying cycles was evaluated in this study. RHA was used as a Portland cement Type I replacement at the levels of 0%, 10%, 20, 30%, and 40% by weight of binder. The water-to-binder ratio was 0.49 to produce concrete having target strength of 40 MPa at 28 days. The performance of RHA blended cement concrete on compressive strength, reduction in strength and loss of weight was monitored for up to 6 months. The results of the compressive strength test have been shown that use of RHA in blended cement has a significant influence on sulfate concentration. When increasing the replacement level of RHA, the strength of concrete also increases in comparison to OPC concrete (except RHA40) even exposed to 5% Na2SO4 solution. On the other hand, the reduction in strength and weight loss of specimens increased with increase in the exposure time. Generally, it can be said that the incorporation of rice husk ash as cement replacement significantly improved the resistance to sulfate penetration of concrete. Finally, RHA cement replacement in concrete mixed provided better resistance to sodium sulfate attack up to 6-month exposure.
Investigation of Pore Structure for Manufactured Sand Mortar
Authors: Tian Zheng Hong , Bu Jing Wu
Published: February 2014

This paper focuses on the pore structure parameters of mortars produced with manufactured sand and natural sand via water saturation and MIP methods. Test results show that, total porosity, as well as compressive strength, of manufactured sand mortar, is higher than that of natural sand mortar at fixed w/c and s/c ratio. Furthermore, considerable volume of large pores present in specimens of manufactured sand at higher w/c ratio rather not at the lower w/c ratio, which caused by the larger binder-aggregate interface. Manufactured fine aggregate in mortar probably accelerate hydrated reaction of cement, which result in the most probable pore size is finer than that of natural sand mortar. It can be concluded that the threshold region becomes flatten and threshold radius increases due to the aggregate volume concentration rises. Finally, a new theoretical model with a double-lognormal distribution function is demonstrated to be reasonable to fit pore size distribution in mortars.
Evaluation of Pore Size Distribution for Controlled Permeability Formwork Liner
Authors: Tian Zheng Hong , Wang Xiao Dong
Published: February 2014

Controlled permeability formwork liner (CPFL) is the functional material similar to nonwoven fabrics and its filtration and drainage performance is dominated by the pore size distribution (PSD) of matrix. In this paper, suction table method, generally used to measure soil pore diameter, is improved for testing PSD of CPFL and experimental data was compared to the results from four other normal experimental methods, i.e., wet sieving method, bubble point method, mercury intrusion porosimetry (MIP) method and image analysis. The comparison indicates that PSD of CPFL obtained from suction table show good accuracy and repeatability. Furthermore, a modified mathematical model derived from Rawal model and Fature model is proved to be suitable for determinating PSD of the matrix of CPFLwith bilayer structure, and have a good agreement with the experimental data from suction table.
Surface Morphology of Nano-Sized Titanium Dioxide
Authors: Nik Mohammad Nik Noor Hafizah , Mamat Mohamad Hafiz , Said Che Mohd Som , Abidin Mohd Hanafiah , Rusop Mohamad
Published: February 2014

The nanoscale materials have a large surface area for a given volume. The larger particle size has some disadvantages such as it can increase the sensitivity to defects. Thus, in this study, the titanium dioxide was synthesized using new method of sol gel assisted with the milling process to investigate its structural and surface morphology. FESEM results show the agglomeration of the particles produces the large particle size of TiO2. In the milling process, longer milling time of 6 h does not affects much on the size of the particles of TiO2, but more affects on its surface morphology of TiO2. The effect on the milling amount of TiO2 also were studied where 4 gram TiO2 shows the highest agglomeration of the sample and 6 gram TiO2 shows the smooth surface compared to others. Finally, the best structure of TiO2 was added into the PMMA to investigate the effects of TiO2 on the composite surface morphology.
An Empirical Approach for Prediction of Natural Fiber Reinforced Polypropylene Composite Properties
Authors: Gupta Ritu , Sulaiman Norrozila , Beg Mohammed Dalour Hossain , Gupta Arun
Published: February 2014

In this paper, empirical models are proposed using multiple non linear regressions technique to predict the influence on the Youngs modulus and the tensile strength of the natural fiber reinforced plastic composites (NFRPC). Maleic Anhydride grafted polypropylene (MAPP) has been a proven coupling agent (CA) used to improve the interfacial bonding between the fibers and the plastics material. It is important to include the factor of coupling agent, when making predictions the properties of the composites through the models. For the development of the model, data was collected from various research journals presented in literature. Non linear regression analysis was performed to obtain the empirical model using polymath scientific software. The results were found to be within the acceptable range.
A Model-Inspired Phenomenology Constitutive Equation for the Temperature-Dependence of Flow Stress at Confined Dimension I
Authors: Saptono Rahmat , Kim Choong Un
Published: February 2014

A model-inspired phenomenology constitutive equation was developed from the first principles to study the temperature dependence of flow stress at confined dimension. The model was limited in the range of temperature and strain-rate where diffusion is insignificant. It was assumed that flow stress was predominantly governed by the thermal activation of dislocation lines overcoming short-range barriers. A simple sound model was developed from the established principles. Data from relevant experiments were fitted into the model to evaluate and reveal key parameters. Normalization of the data and linearization of the model were performed prior to the evaluation and analysis. The proposed models were generally well fitted to the experimental data as indicated by the correlation factors of >0.85, which could be principally accepted by the criteria of R2=0.90. Of the candidate models, Model III and Model I are particularly recommended to study the temperature-dependent behavior of Cu at confined dimension in the space of interest related to the intended applications (2<TM/T<5). Physical mechanistic re-interpretation of the models for the problem of interest is presented in the second report (Part II).
Self-Starting Performance Numerical Analysis of Fixed-Pitch Vertical Axis Hydro-Turbine
Authors: He Huan Yu , Sun Ke , Ma Yong , Zhang Liang
Published: February 2014

Three-blade fixed-pitch vertical axis hydro-turbine static starting torque and loads are studied by using software ANSYS CFX and theoretical derivation method. Moreover, based on solving fluid rigid motion equation, turbine self-starting transient numerical simulation is carried out by using CFX CEL language. Loads of turbine, time of self-starting and angular velocity stability after self-starting are studied at the different azimuth angle of turbine. The results show that the hydro-turbine has the best self-starting performance when one of blades is at the location of azimuth angles 10°.