bluuebunny/crossref_metadata_2025 huggingface dataset:
Multiscale Analysis and Morphology of TiC Films Deposited by Pulsed Laser Ablation
Authors: D’Alessio L. , Pace G. , Teghil R.
Published: July 2013

In this work the microscopic morphology of titanium carbide thin films, obtained by pulsed laser ablation, are studied. A target of TiC has been ablated in vacuum with a laser Twinkle of Light Conversion Ltd. capable to furnish impulses of 250 fs, with a repetition frequency of 10 Hz at the wavelength of 527 nm. The ablated material has been deposited on (111) oriented silicon substrates, maintained at ambient temperature during the film deposition. Digital images of the films have been acquired through scanning electron microscopy. Numerical codes have been developed in Matlab environment, to obtain a three-dimensional reconstruction of the film surfaces starting from the bidimensional images. On such reconstruction a multi-scale analysis has been performed by hilbertian methods, for the characterization of the surface roughness and to study the distribution of the deposited nanoparticles. The results show that the free surface of the film has a characteristics scale invariance that allow the description by multi-fractal techniques. In particular the fractal dimension of the surface has been calculated in nanometric range. The investigation allows to identify some proper morphological indicators to characterize the film geometry and parameterize the tribological properties of the interface. These indicators, if opportunely employed together with classical methods of analysis, furnish a further tool for better understanding the complex nature of the deposits.
Melting Temperature of FeO under Pressure
Authors: Zhang Shuai , Chen Lei
Published: July 2013

The melting temperature-pressure phase diagram [Tm(P)-P] for wustite (FeO) is predicted through the Clapeyron equation where the pressure-dependent volume difference is modeled by introducing the effect of surface stress induced pressure. FeO plays an important role in many metallurgical processes and in the Earths mantle mineralogy. FeO is also of great interest in the field of state solid physics and chemistry because of its electrical, magnetic, structural and non-stoichiometric properties.
Slurry Erosion Model for Wear Performance Prediction of Tool Steel
Authors: Nunthavarawong Peerawatt
Published: July 2013

Erosive wear is one of the major failure modes in metal and plastic injection moulding. Certain regions such as gate, runner and some areas on the cavity wall, are particularly susceptible to erosive wear damage, leading to the reduction in the mould lifetime. Several parameters such as pressure, injection velocity, melting temperature, including various contaminants during material processing, have influenced to decrease the surface quality of the mould. Hence, the wear test and prediction are necessary information for the life extension of the mould material, and were carried out in present work. This work therefore aims to determine slurry erosion wear behaviour of the mould material, and presents a new semi-empirical approach to estimate the wear coefficient of material itself as a function of impact angles via an erosion test apparatus. It was found that the maximum wear coefficient of the tool material is around ~ 2.51 x 10-7 at the impact angle of 60o. While that the minimum value was found to be ~ 4.70 x 10-8 at the angle of impingement of 30o. Therefore, the effect of the different angle of impact on the impact energy, can also represent the failure modes in the tool steel material as ductile failures.
Analysis on the Residual Stresses in Functionally Gradient Fe360/Glass-Ceramic Coatings
Authors: Zhou Li Ming , Gong Wei , Wang En Ze
Published: July 2013

A novel functionally gradient composite was reported in this article. The composite material are composed of plain low carbon steel Fe360 as a substrate and glass-ceramics containing ZrO2 reinforcing particles as a coating. Based on a mathematical model of the residual stress, the geometric model and finite element analysis models of the Fe360/glass-ceramic gradient coatings were established. The residual stress of the gradient layers was calculated with the commercial software ANSYS 10.0. The results showed that the differences of thermal expansion coefficient and shrinkage rate in each layer resulting from the difference of the volume fraction of ZrO2 in each gradient layer could make the surface layer generate suitable compressive stress. The maximum residual stress presents itself at the interface between the substrate and the gradient coatings. The layer numbers and the thickness of graded coatings have a significant effect on the residual stress.
Influence of Material Coating on Stress Measurement by Ultrasonic Surface Wave (Part 1)
Authors: Preedawiphat Pavaret , Prateepasen Asa , Noipitak Mai
Published: July 2013

Ultrasonic surface wave have been implemented to measure or predict the existing stress on material. Surface wave velocity shows linearly increase with stress applied in material. However, various applications were coated their surfaces with high corrode resistance material for example paint or aluminum thermal sprays. It may cause the change of the velocity of surface wave and lead to miss prediction. This paper presents the effect of material coating on surface wave velocity and its attenuations. Paint and Aluminum thermal spray coated on low carbon steel graded S420 (EN 10025 Standard) in the range of 100-500 micron. Through transmission ultrasonic surface wave was applied to measure the velocities change. Their frequencies are 2.25 and 5 MHz respectively. It was found that coating thickness show effect on sound velocity and sound wave attenuation. The benefit is to know the effect of coating and to approve the accuracy of stress measurement by ultrasonic wave.
Polar Probe Study of Water-Organic Solvent-Macromolecule Emulsifier Aggregates Structure
Authors: Zhang Hong Jing
Published: July 2013

In this paper, using methyl red as polar probe, a containing LPS macromolecule emulsifier (HBS-1, MW is about 106Da) micellar aggregates in different polar medium (ethanol, n-butyl alcohol, ethylene glycol and DMF) structural properties, and provide a theoretical basis for the mechanism of the emulsified crude oil.
The Design and Analysis of the H Beam Structure Cup Support for Weighing Large Structure
Authors: Zhang Jin Bao
Published: July 2013

The H beam structure has high requirement for the force condition in weighing. The paper do a detailed analysis for the force condition of the cup support in the weighing procedure, through the design and finite-element analysis for the weighing cup support of the 3M101 module A12 cup support. Improves security and at the same time make the stress-strain in the weighing procedure in the allowable range.
Early Strength Fiber Mortar Test Research
Authors: Teng Ai
Published: July 2013

This paper proposed experimental research on different proportion of sulphoaluminate cement, the main parameters are: cement matrix, proportion of sulphoaluminate cement in Portland cement. Results show that the compression, rupture strength achieve the best as the proportion of sulphoaluminate cement in Portland cement come to 5%.
Evaluation on Quality of Cement Concrete in Pavement of Highway
Authors: Yu Le Hua , Zhou Shuang Xi , Deng Wen Wu
Published: July 2013

According to the construction specification and relevant data collected from construction situ, quality of cement concrete in pavement of highway was evaluated by statistic result of flexural strength in this paper. The assessment and analysis were based on three statistic parameters of flexural strength, which are the qualified value of flexural strength, the minimum of flexural strength and variation coefficient of flexural strength, respectively. The estimating results could be summarized that the pavement concrete had been endowed with stronger flexural strength and better stability so to satisfy relevant target of highway standards. Meanwhile it was discussed that quality characteristics of pavement concrete was changed with main construction factors included milepost distance, section distribution, half-side spatial position, construction time and other environment. Furthermore, the technical methods for enhancing concrete pavement were proposed.
Analysis on Thermal Measuring of Rooftop Farming Garden a Case Study of Julong Residential District in Zhongshan
Authors: Wu Juan Yu , Liu Ming Xin , Xiao Lei
Published: July 2013

Nowadays, many urban cities in the world are facing problems of urban heat island and lack of greenery space. Rooftop farming is a strategy for intensifying urban agriculture activities, which can not only improve nutrition and food security in urban neighborhoods, but also reduce the energy consumption of air-condition and ease the power shortage in urban area of metropolitan regions. In this study, a thermal experiment and an index of energy saving analysis were carried out in Zhongshan, Guangdong Province, China in August 2011, measuring external and internal surface temperatures of roofs with and without greening, using the same set of climate parameters. The experiment results show that the green roof with urban farming can contribute to the modulation of air temperature in the interior spaces of building. During the hot days in summer, the external surface temperatures of green roof are lower than the normal flat one. The result also reveals that external surfaces of vegetated green roof system could effectively lower surface temperature by 6 °C and save 18.7% electric power, comparing with the general flat roof of traditional building.
Study on Defect Detection Based on D-S Evidential Reasoning in Natural Gas Pipeline
Authors: Li Juan , Guo Hong Wei
Published: July 2013

Based reasoning data fusion method, Dempster-Shafer evidence reasoning applies to natural gas pipeline detecting experiments. Through the use of multiple sensors to sample the defect information in natural gas pipeline, extracting characteristic information, using neural network to carry on the fusion recognition, and then the neural networks for normalized output value as evidence, Dempster combination rule to fuse the data further and improve reliability, the final identification of the effective decision-making a type of pipeline defect. This experiment shows the D-S evidence reasoning has a strong ability to deal with uncertain information, the result proved the correctness and effectiveness.
Hydrothermal Synthesis of LiMnO2 with Orthorhombic Structure as Cathode Materials
Authors: Hu Hui Zhong , Pan Bao Wu , Hao Xiao Jian
Published: July 2013

o-LiMnO2was successfully synthesized by the hydrothermal method at Li+/Mn3+=4:1. The influence of Li+/Mn3+ratios, hydrothermal temperature and time to the purity ofo-LiMnO2was researched. The particles as-prepared were well-dispersed and near-spherical.
Discuss of Unmanned Plane Braking Experiment Base on Eddy Current Technology
Authors: Chen Wei , Su Cheng Zhi , Zhang Xu , Song Yue Feng
Published: July 2013

In the process of unmanned aerial vehicle (uav) landing safely and quickly brake problem，Puts forward a uav electric eddy current braking method.The method through the eddy current and magnetic field interact to produce braking torque. According to the uav braking requirements, Design the uav electric eddy current brake simulation system. Test results show that: Based on the eddy current brake technology the average braking torque for 870N·m is greater than the “inner” type uav brake the average braking torque for 530N·m, Can meet the requirements of the uav braking system, So will the eddy current brake applied to unmanned aerial vehicle is feasible.
A New Synthesis of BaHPO4 Precipitated by BaCO3-H3PO4-NaOH System at Room Temperature
Authors: Boonchom Ban Jong , Ruttanapun Chesta , Thongkam Montree , Chaiyasith Pachernchaipat , Woramongkonchai Somsak , Kongteweelert Samart , Vittayakorn Naratip
Published: July 2013

Barium hydrogenphosphate, BaHPO4 was synthesized for the first time through simple and rapid method using BaCO3-H3PO4-NaOH, pH =9.0 at room temperature for 30 min. The studied BaHPO4 decomposed in a single well-defined stage via deprotonated hydrogenphosphate reactions, revealed by TG/DTG and DSC techniques. The calculated wavenumbers based on DSC peak were comparable with FTIR results, which support the breaking bonds of P-OH (HPO42-) in the deprotonated hydrogenphosphate reactions. The thermodynamic functions (ΔH*, ΔG*, and ΔS*) for the deprotonated hydrogenphosphate reactions calculated from DSC data indicate that the deprotonated HPO42- reaction occur a lower-energy pathway and spontaneous process. The FTIR, XRD and SEM data of the studied BaHPO4 and its decomposed product Ba2P2O7 are also reported.
Improving the Performance of Content-Locality Based Storage Management
Authors: Jun Kyung Koo , Lee Ka Ram , Kang Seok Hoon , Jeon Gwang Gil
Published: July 2013

The wide spread of cloud services has increased the demand for high performance storages. There have been various research efforts to improve performance by combining HDDs and SDDs in a hybrid form because the price per unit capacity of SSDs is higher than that of HDDs. A method that exploits the characteristic of content locality has been proposed and it reduces sizes of data by using delta encoding. However the method has limitations if data has low content locality. This paper modifies the method to overcome such limitations. The proposed method is able to reduce the overhead of delta encoding by skipping the encoding if data are found to have low locality. Instead, it utilizes caching to improve the IO performance of such data. Experiment results show that the performance of the proposed method is at least 20% higher than the original scheme.
Maintenance of Hydraulic Systems on Machine Tools
Authors: Wang Huan Yun , Pan Chun Hui
Published: July 2013

Proper maintenance of hydraulic equipments has a great significance to increase ratio of perfectness and utilization, ensure the quality of the project, extend service life, improve production efficiency and reduce production costs. The authors in this paper discuss the scientific measures to keep equipments in good condition and ensure workplace safety from the angle of hydraulic systems maintenance. It has reference value for proper care and maintenance of hydraulic systems on machine tools in the factorys.
Development of Method for Measurement Sound Pressure Level to Use Earphone
Authors: Kang Seok Hoon , Moon Hyuk
Published: July 2013

Earphone use has skyrocketed due to the widespread dissemination of portable acoustic-apparatus. As the result, hearing loss due to noise-induced is becoming a big social problem. As the existing method, warning message is only used to prevent the hard of hearing according to the earphone use. However, it is hard for users to know the effect of the hours of earphone use and volume on their hearing, and control the earphone use by themselves. Therefore, in this paper, the method is suggested that users measure the effect of the time and volume of earphone use on their hearing with the simple experimental equipment and program. The method suggested in this paper is based on the simple experimental equipment to set up the similar environment to the real ear, and the program to find out the effect on hearing with the measured data.
Application of Portable Ultrasonic Phased Array Instrument for Rail Welds Ultrasonic Inspection
Authors: Lao Jin Jie , Lu Chao
Published: July 2013

In order to promote the phased array technology for the application of weld inspection, the advantage of phased array technology was introduced and the application of rails welding inspection with phased array technology was also introduced. Through detecting nature and machining flaws of aluminum-themic welding of rails, contrast to results of conventional ultrasound test, validate the effectiveness of ultrasonic phased array method, concluding characteristics of ultrasonic phased array method for the aluminum-themic welding of rails. From the result of application, the efficiency of weld inspection could be greatly improved and the inspection cost could be greatly reduced by phased array technology.
An Elastic Solution of a Functionally Graded Cantilever Beam with Different Modulus in Tension and Compression under Uniform Pressure
Authors: Yang Qing , Zheng Bai Lin , Zhang Kai , Zhu Jian Xin
Published: July 2013

An Elastic solution for functionally graded cantilever beam with different modulus in tension and compression subjected to a uniform pressure on the lateral surface is investigated. The elastic modulus of tension and compression vary with the thickness as an arbitrary function, respectively, which makes the solution have a broader range of applications than the homogeneous ones. When the tension and compression modulus have the same constant value, the solution degenerates into the classical one of the cantilever beam.
The Predictor-Corrector Method for One-Dimensional Stiff Detonation Capturing
Authors: Zhang Bin , Wang Jiang Hang , Liu Hong , Chen Fang
Published: July 2013

A new fractional step method is proposed for stiff chemical reactive flows. In stiff reaction problems, wrong propagation speed of detonation wave may occur in general fraction step algorithm. During the reaction step, the proposed scheme replaces the average representation with two-reconstruction values which are obtained by predictor-corrector steps. For numerical experiments, the first-order upwind AUSM scheme and the explicit Euler method are considered. Several one-dimensional stiff reactive flows are investigated. The numerical results show that the propagation speed of the detonation wave computed by the standard method is faster than the exact solution. However, the numerical solutions by the proposed method have very good agreement with the exact solution.
Multi-Objective Optimization of Order Oriented Mixed-Model Assembly Line Sequencing Problem
Authors: Li Zhi , Jiang Zhao Liang , Liu Yu Mei
Published: July 2013

Mixed-model assembly lines are widely used in many manufacturing firms to meet diversified demands of consumers without possessing large product inventories. In this paper, we posed order oriented assembly line sequencing as a multiple-objective optimization problem with the objectives to minimize material consumption waviness, the total setup cost, and finished product inventory cost. The multi-objective optimization algorithm based on non-dominated sorting particle swarm optimization (NSPSO) is designed. Computational experiment has been demonstrated to the applicability of using NSPSO to solve the problem and effectiveness of the proposed approach. By means of this research, the valid solutions for order oriented mixed-model assembly line sequence can be offered to the decision makers effectively.
A Priority-Based Weighted Inner Products Matching Coarsening Algorithm on Multilevel Hypergraph Partitioning
Authors: Zeng Yao Yuan , Zhao Wen Tao , Wang Zheng Hua
Published: July 2013

Multilevel hypergraph partitioning is an significant and extensively researched problem in combinatorial optimization. Nevertheless, as the primary component of multilevel hypergraph partitioning, coarsening phase has not yet attracted sufficient attention. Meanwhile, the performance of coarsening algorithm is not very satisfying. In this paper, we present a new coarsening algorithm based on multilevel framework to reduce the number of vertices more rapidly. The main contribution is introducing the matching mechanism of weighted inner product and establishing two priority rules of vertices. Finally, the effectiveness of our coarsening algorithm was indicated by experimental results compared with those produced by the combination of different sort algorithms and hMETIS in most of the ISPD98 benchmark suite.
Facile, Alternative Synthesis of Spherical-Like Ca(H2PO4)2•H2O Nanoparticle by Aqueous-Methanol Media
Authors: Kongteweelert Samart , Ruttanapun Chesta , Thongkam Montree , Chaiyasith Pachernchaipat , Woramongkonchai Somsak , Boonchom Ban Jong
Published: July 2013

Spherical-like calcium dihydrogenphosphate monohydrate (Ca (H2PO4)2H2O) nanostructure was successfully prepared by the mixing of calcium carbonate and phosphoric in aqueous-methanol media at ambient temperature for 30 min. Three thermal decomposition step and higher stability at over 800 °C of the prepared sample are different from the earlier works. Spherical-like Ca (H2PO4)2H2O nanostructure with diameter < 100 nm confirmed by SEM may be important for potential applications. This method of synthesis by aqueous-methanol media is a fast and simple method and it is expected to be applicable for the synthesis of other nanocrystalline calcium phosphates.
Optimally Determined Modified Bayer Color Array for Imagery
Authors: Jeon Gwang Gil
Published: July 2013

This paper introduced a problem of the modified Bayer pattern color filter array (CFA). A demosaicking method is also known as color interpolation, which is a digital camera process employed to restore a full-color imagery from an image with missing color information. In general, a CFA pair contains two green pixels and one red and blue pixel (RGGB). However, there exist alternatives such as RRGB or RGBB. In this paper, we study the effect of three different color arrays. Simulation results show that the obtained filters give good performance.
A Neural Network-Based Algorithm for Group Technology
Authors: Choi Ki Seok
Published: July 2013

In this paper, we propose a neural network-based algorithm for grouping machine and parts in cellular manufacturing. For grouping machines, we develop similarity coefficients which take into account both similarity and dissimilarity between machines. The machine cells are formed by an algorithm which is based on the maximum neural network. Another algorithm is used to find the part families associated with each machine cell. When compared with an existing algorithm, our algorithm shows better performance in terms of grouping efficiency and grouping efficacy.
Effect of Integral Feedback Control Forbeam Tip Pointing
Authors: Lee Young Sup
Published: July 2013

This paper presents the effect of an integral feedback controller for minimizing the pointing error at the tip of a very flexible and slender cantilever beam to follow a command signal. A piezoeletric PZT actuator patch isbonded on near the clamped end of the cantilever beam. Also it is considered that a position sensor is located near the tip of the beam but it is not attached on the beam. The beam is designed to be lightly damped and its step response withoutcontrol is quite long. But because of the non-collocation of the sensor and actuator, the plant response is non-minimum phase. After an intensive computer simulation, it is noted that the integral controller can reduce the settling time with proper stability and control gains. Also an analysis and comparison of the integral controller with a proportional-integral controller for the pointing error minimization of the very flexible and slender beam is described in detail.
A Hybrid of Force and Position Control with Energy Saving in the Electro-Hydraulic System
Authors: Pornjit Pratumsuwan , Aphaiwong Junchangpood
Published: July 2013

Generally, the electro-hydraulic system (EHS) has force and position controls. The control of these parameters to the desired value multiple PID controllers are often used, which are sensitive to changes in system parameters. In addition, the existing EHS is often used as a single proportional direction control valve (PDCV) to control those parameters that cause loss and waste energy. Therefore, in this paper, a fuzzy controller is proposed to control force and position. Simultaneously, the EHS that is used for control will be added the inverter to adjust the speed of the electric motor (EM) to drive a fixed displacement gear pump, and a proportional pressure relief valve (PPRV), in order to save energy. A proposed fuzzy controller and the EHS are implemented to the hydraulic press. The experimental results showed that the hybrid of force and position control by using a fuzzy controller has a superior performance compared to the multiple PID controllers. Moreover, the proposed EHS is also more effective in saving power consumption than conventional EHS.
Method of AC Servo System Based on Genetic Algorithm and Neural Network PID Control
Authors: Chang Wen Chun , Chen Cheng
Published: July 2013

BP network model has become one of the important neural network model, is used in many fields, but it has some defects. As from a mathematical perspective, it is a nonlinear optimization problem, which inevitably has the local minima problem; BP neural network learning algorithm has slow convergence rate, and the convergence speed and the initial weights of choice; network structure, namely the hidden layer nodes selection is still no theory until, but according to the experience. Based on the BP algorithm the local extreme values, considering the genetic algorithm and BP algorithm is combined with, on the BP neural network optimization. Neural network using genetic algorithm optimization mainly includes three aspects: the connection weights of evolution, evolutionary network structure, learning the rules of evolution.
Modeling for a System Operating Characteristic for Wide Area Mines
Authors: Rong Ying Jiao , Sun Ping , Li Shan Shan
Published: July 2013

Traditional landmines are limited in their attack range and information providing ability. There are currently several wide area search mines in the research and development phase to overcome these disadvantages. Progress on the individual technologies is promising, but there are insufficient analytical tools for evaluating the effectiveness of these concept mines. This paper examines some of the modeling aspects of wide area search mines with Autonomous Target Recognition (ATR) capability. The optimal employment of autonomous wide area search mines is addressed. The specific scenarios considered involve several mines searching a battle fields for targets in the presence of false targets. All relevant parameters are extracted from intelligence information, the sensor performance specification, and the vehicle performance specification. Analytic system effectiveness measures are derived using applied probability theory. Optimal schedules for controlling sensor threshold during a mission are derived. These schedules establish a system operating characteristic. An increase in system effectiveness is demonstrated when parameters are dynamically controlled during a mission.
The Electronic Counting System Design Based on Single Chip Microcomputer
Authors: Wang Xiao Li , Wang Bing
Published: July 2013

Posture in the drug particles falling was changed through the interaction of rotating plate , apron and the centrifugal force of the plate, in order to achieve the tablet as a single order fall, to avoid duplication of drug particles. Counting drug granules using the photoelectric effect, received signals through the data acquisition circuit. When the count was the same as the value set in advance, the relay acted, and the flap opened, tipped by the alarm circuit for changing bottles. This single-chip counting device in factory production lines for product statistics, has irreplaceable advantages compared to other counting devices.
Optimization of Industrial Processes in Reactors
Authors: Berdiyeva Meruyert , Ospanova Aiman , Othman Мohamed
Published: July 2013

In the conditions of industrial production many processes of polymerisation are non-stationary. By processes optimization with the regard for such features as basic data it is necessary to use adaptive algorithms of identification, allowing mathematical model of process continuously to be adapted for changing conditions of operation. Use of such algorithms for process optimization demands periodic recalculation of optimum technological modes of process.
Polymer reaction engineering is a discipline that deals with various problems concerning the fundamental nature of chemical and physical phenomena in polymerization processes. Mathematical modeling is a powerful tool for the development of process understanding and advanced reactor technology in the polymer industry.
Optimization of Post Weld Aging on Duplex Stainless Steel UNS31803 Grade with 23 Factorial Designs
Authors: Peasura Prachya , Santirat Nansa Arng
Published: July 2013

Duplex stainless steel are good combination of economy, weldability and toughness and are often selected where both strength and corrosion properties are crucial. The research was study the effect of post weld aging parameter on mechanical properties. The specimen was duplex stainless steel UNS31803 grade sheet of 10 mm thickness. This experimental study aims at 23factorial design optimizing various post weld aging parameters including solution temperature at 900 and 1,050 °C, post weld aging temperature at 650 and 850 °C and post weld aging time were set at 4 and 8 hour. The welded specimens were tested by hardness testing in heat affected zone and tensile strength testing. The result showed that both of solution temperature, post weld aging temperature and post weld aging time interaction on hardness and tensile strength at 95% confidential (P value < 0.05). Factors affecting the optimum were solution temperature 1050 °C, PWA temperature 850°C and PWA time 4 hr. at hardness optimum of 282.36 HV and tensile strength optimum of 109.37 kN. This research can bring information to the foundation in choosing the appropriate post weld aging parameters to duplex stainless steel welds.
An Implementation of Teaching Process Control System Based on Java
Authors: Qiao Shan Ping , Wu Peng , Zhao Ling
Published: July 2013

Teaching process for a course is very important. How to improve the effect is closely related to the teacher and his/her teaching approach. Specially, the computer aided measures are also necessary. This paper introduces a teaching process control system which was implemented using object oriented technology. The aim of this system is to help teachers to enhance their teaching effect in the classroom. On the base of the system analyses, a teaching process control system was developed in Java language. This system has time control, time configure, teaching tools and other functions. The good effect has been received after this system was used in the real teaching process by some users. However, some functions about this system even need to be enhanced much in the future.
Statistical Analysis of the Massive Traffic Data Based on Cloud Platform
Authors: Sun Hong Feng , Li Ying , Lv Hong
Published: July 2013

Currently, with the rapid development of various geographic data acquisition technologies, the data-intensive geographic calculation is becoming more and more important. The urban motor vehicles loaded with GPS, namely the transport vehicles, can real-timely collect a large number of urban traffic information. If these massive transportation vehicle data can be real-timely collected and analyzed, the real-time and accurate basic information will be provided for monitoring the large area of traffic status as well as the intelligent traffic management. Based on the requirements of the organization, the processing, the statistics and the analysis of the massive urban traffic data, the new framework of the massive data-intensive calculation under the environment of cloud platform has been proposed through employing Bigtable, Mapreduce and other technologies.
TCLOUD: A Reliable Data Storage Architecture for Cloud Computing
Authors: Ullah Sultan , Zheng Xue Feng , Zhou Feng
Published: July 2013

For decades the researchers were trying to provide computing as a utility, where the consumer will enjoy the on demand applications and resources from a collection of shared computing resources. This dream comes true in the shape of cloud computing, and the owners of the data now outsource their data to cloud data center. It not only relieves the owner from the extra pain of local storage and maintenance but it allows accessing the data anywhere, anytime on demand. Outsourcing data eliminates the control on the physical computing resources for the owner, and it also creates a chaos among the customer regarding the confidentiality and integrity of their data. The security issues can be handled in numerous ways, i.e efficient access control and authorization mechanism etc. The reliability or accuracy of data is a problem, where the unauthorized changes made to the data without the permission and knowledge of the owner of the data and it is an important component of cloud computing to provide an efficient and secure data storage. Therefore to facilitate the swift employment of data storage service and recapture safety measures for the outsourced data, we propose a set of operational algorithms to resolve the challenge of secure data storage and make the cloud storage service a reality.
A Method for Mobile Photo Recommendation
Authors: Kang Seok Hoon
Published: July 2013

Spending a lot of time to find right photos from a large album in a mobile device is very inefficient. To solve the problem, various methods have been suggested, which automatically present the photos that users are looking for. In this paper, in order to automatically choose photos that a user wants, a photo recommendation system using visual information is proposed. The recommendation method divides photos and detects visual feature points using entropy. From the experiment of using the photo recommendation program suggested in this paper, the users showed more than 90% of satisfaction rate. As the result of searching for a specific photo, the suggested method by this paper has the higher F-measure by average 17% than the existing recommendation methods. Furthermore, its searching time is 4 times faster than that of existing methods
Digital Image Watermarking Program
Authors: Wang Qing Jun , Wang Xiao Bin
Published: July 2013

This paper proposes digital image watermarking algorithm in DCT domain which makes use of the unique nature of chaotic sequences to encrypt binary image watermarking with copyright information via chaotic sequences and then embeds watermarking component of different strengths in DCT domain of different image blocks self-adaptively. Through the added Gaussian noise, salt and pepper noise and JPEG compression and shear processing operations, the results show that the algorithm has a good visual masking and robustness.
A Novel Qt-Based FMECA Platform: Methodology and Architecture
Authors: Yang Shun Kun , Li Guo Qi
Published: July 2013

FMECA is widely appreciated in reliability engineering. In this paper, a novel Qt-based FMECA platform, namely, aided software tool is presented. In several ways, it is better than existing platforms, especially, it is suitable for model-based development. The methodology and architecture of the platform are described in detail. This paper is a reference for FMECA analyzer and developer for similar platforms.
Research on Construction of Database Domain Ontology
Authors: Jiang Xue , Liu Ying , Zhang Ying , Fang Zhen , Dang De Peng
Published: July 2013

Domain ontology, which is widely used in knowledge engineering, artificial intelligence and semantic Web domain, describes concepts of the entities and mutual relationships between them. However, there is no existing research on construction of database domain ontology. Domain ontology of database will help to optimize associative knowledge learning in teaching and develop the intelligent tutoring system. It can also maximize domain knowledge sharing and reusing. In this paper, database domain ontology is constructed, and then we achieve the visualization. Finally we also implement the persistent storage of ontology and query.
Influence on the Productivity of Modern Thermoset Preheating in the Compression Molding Technology
Authors: Duranik Tomas , Ružbarský Juraj , Stopper Markus
Published: July 2013

The article specifically deals with the compression molding technology and new possibilities to bring the whole technology to higher level in innovation. Identifies the methods and describe the best possible method to increase the productivity. Article introduces the compression molding technology, and how the preheated material can affect the compression time. The unreasonable higher the compression time is the less is the productivity. From measurements have been made conclusions, and the processed result are shown in charts and tables.
Process-Based Assembly Technical Annotation Management in 3D Assembly Instruction
Authors: Geng Jun Hao , Tian Xi Tian , Yang Bin
Published: July 2013

In order to instruct on-site workers to accomplish the assembly job fast and exactly, improve the assembly quality and efficiency, we proposed a management method for assembly technical annotation in 3D assembly instruction. This method maps 3D technical annotations to assembly operation and assembly time based on time sequence granularity, achieves the goal of showing assembly technical annotations based on assembly process. We demonstrated the effectiveness of this method with a satellite antenna feed components assembly process instance. The instance shows that this method can mark assembly technical annotations based on assembly process, and show the annotations in time sequence but not in assembly space. This will help on-site assembly workers to understand the assembly order fast and unambiguously, finish the assembly operations correctly.
Cache-Enabled Metadata-Aware Storage in Linux Systems
Authors: Jun Kyung Koo , Myung Se Jong
Published: July 2013

Hybrid storage systems integrate slower HDDs with faster SSDs to improve overall performance. To this end, various research efforts have investigated how to use SSDs as cache for HDDs. One of them proposes to cache only metadata blocks because all IO requests are accompanied with the requests to the metadata blocks before issuing the requests for the data blocks. However, our evaluation of the method could not confirm the claimed improvement. It motivated us to modify the method to integrate the caching functionality. The implementation of the proposed method in the Linux systems required to address several challenging issues. The evaluation results showed that the proposed method improved the performance by at least 90% over the original scheme. It implicitly means that caching the data blocks has more significant impact on performance than the metadata caching.
Analyzing Push Schemes for Social Networking Services in Wireless Networks by Using Monte Carlo Simulations
Authors: Jun Kyung Koo
Published: July 2013

Social networking services such as Twitter and Facebook have occupied a large portion of our everyday life and it is expected to do so for the time being. SNS systems use both push and pull schemes to deliver contents to users. Regarding the push schemes, there are push N based scheme and timer based scheme. In this paper, we analyze the performance of both schemes by using Monte Carlo simulations and understand their characteristics. We present the simulation results that show the performance under various conditions. Moreover, we find that a weighting factor should be given more emphasis because of its significant impact on the performance. Also, we claim that the former work that analyzed PNS and TPS used wrong assumption that leads to the misconception about PNS.
Intra and Inter Language Control for French to Arabic Machine Translation in the Security Domain
Authors: Beddar Mohand
Published: July 2013

The TACCT (Traduction Automatique Contrôlée Centre Tesnière) system architecture draws its strength from two main areas governed by microsystemic theory due to Sylviane Cardey: controlled language and contrastive linguistics. In this approach where the French and Arabic languages are brought close together by using a comparison of the two linguistic systems and control of the respective languages, the most appropriate approach seems to be unquestionably the microsystemic one. This is because the microsystemic approach is able to address the particular needs of each language considered by the system. The microsystemic approach decomposes the whole system into dynamic subsystems, unknown at first, their boundaries being dependent on the architecture of the machine translation system. The resulting fragmentary nature of the microsystems is aimed at apprehending the whole language with a detailed analysis of each of its constituent components and at the same time formalizing the nature of interactions between them. The syntactic-semantic model adopted for Machine Translation in the TACCT system is therefore the result of this new two-faceted approach based on both the study of divergences and convergences between French and Arabic conducted on a large bilingual safety corpus and also on an intra-and inter-language control-oriented analysis. Because of this we distinguish in our research between different types of control: static control and dynamic control.
Collaborative Learning in Social Networking Sites: A Case Study on the Use of Mahara
Authors: Ching Gregory S.
Published: July 2013

Information technology and education have been working hand in hand. Advancement in computer technology has altogether opened up limitless educational innovation. With the rise of popularity of social networking sites (SNS) such as Facebook, educators have been eager to test the usefulness and effectiveness of SNS in the teaching and learning process. This paper summarizes the findings of a case study with the use of a social networking software; Mahara. Participants are 46 students of a technical vocational university in Taiwan. Students are grouped together and assigned a certain task to accomplish with the use of Mahara. Enabling the collaborative functions of SNS to accomplish the task, students are later surveyed with regards to their learning styles, perceived collaborative learning and constructivist internet-based learning environment (CILES) preferences. Result shows that the participants’ collaboration is highly significant to their CILES preferences. While, there seems to be no significant effects of learning style towards the participants’ CILES preferences. Recommendations are given to further the improvement of SNS use in education.
Application of the Multimedia Teaching in Martial Arts Training
Authors: Peng Yi
Published: July 2013

This paper summarizes the problems by analyzing the problems which emerge from the application of the multimedia teaching in martial arts training and by collecting accurate data. The summarized results highlight the importance of the multimedia teaching in martial arts training, and emphasize the necessity of application. In the end, several trial suggestions and related points for attention are put forward during applications of the multimedia teaching in martial arts training.
Surface Properties of Different Travel Speeds and Powder-Feeder Rates for Plasma-Sprayed Coatings on Aluminum Substrates
Authors: Jean Ming Der , Sheen Maw Tyan
Published: July 2013

The surface properties of plasma-sprayed partial Y2O3 stabilized ZrO2 coatings with different travel speed and powder-feeder rate of sprayed gun on aluminum substrates have been reported. Several coatings analytical parameters were studied and these factors affecting coating properties were carried out in the plasma-sprayed experiments. Experimental results have shown that the structure of the sprayed coatings that makes relatively diverse in texture for most of the coatings was examined by a SEM. The hardened strength with a low level of a slant of powder-feeder rate became significantly weaker as the travel speed was decreased. Interestingly, the structure of the specimens for the travel speed of 30mm/s is more homogenous than that of the others, indicating a coating with good homogenous structures, while the interfaced structure of the specimens for the powder-feeder rate of 25 mm/s is more homogenous than that of the others, indicating a coating with good adhesive structures. The tendency of the effect of travel speed of sprayed gun on the hardened surface of coatings at powder feeder rate of sprayed gun varied to 30g/min from 20g/min seems to be apparent.
Research on Intrusion Clustering in the Cloud Platform Based on Kohonen Neural Network
Authors: Zhou Tian Yuan
Published: July 2013

With the wide application of cloud platform, information security based on cloud platform has become a research hot point. In this paper, by analyzing the security features of the cloud platform, researched the intrusion clustering based on Kohonen neural network, and proposed a new framework, and improved the weights of output layer. With the software Matlab simulation, the experimental results were satisfactory, illustrated that invasion clustering of neural network based on cloud platform took good effect.
Understanding the Responsiveness of Open Loop Rate Adaptation Algorithms of IEEE 802.11 WLAN
Authors: Jun Kyung Koo
Published: July 2013

EEE 802.11 WLAN can adjust transmission rates according to channel environment. Among rate adaptation methods, open loop schemes do not rely on explicit messages that tell channel state of receivers but can estimate from the arrival of ACKs. However they cause rates to alternate repeatedly. To remedy such oscillation, Adaptive Auto Rate Fallback (AARF) and Robust Rate Adaptation Algorithm Plus (RRAA+) were proposed. This paper evaluates their performance by using simulations in order to understand their characteristics and responsiveness to channel conditions. We expect such efforts to encourage new ideas to improve them further. From the evaluations, we observed that AARF is superior to RRAA+ in the perspective of throughput. Also, we found that the oscillation does not badly affect performance as known and TCP and UDP traffic are influenced differently by rate adaptation.
Whole Life Cycle Costing and Quality Satisfaction: Public Housing Floor Material
Authors: Mat Noor Noorsidi Aizuddin
Published: July 2013

Most commonly, residents are always arguing about the satisfaction of sustainability and quality of their high rise residential property. This paper aim is to maintain the best quality satisfaction of the floor materials by introducing the whole life cycle costing approach to the property manager of the public housing in Johor. This paper looks into the current situation of floor material of two public housings in Johor, Malaysia and testing the whole life cycle costing approach towards them. The cost figures may be implemented to justify higher investments, for examples, in the quality or flexibility of building solutions through a long-term cost reduction. The calculation and the literature review are conducted. The questionnaire surveys of two public housings were conducted to make clear the occupants evaluation about the actual quality conditions of the floor material in their house. As a result, the quality of floor material based on the whole life cycle costing approach is one of the best among their previous decision making tool that was applied. Practitioners can benefit from this paper as it provides information on calculating the whole life costing and making the decisions for floor material selection for their properties.
Reliability of Safety Instrument System Based on Markov Model and D-S Evidence Theory
Authors: Pan Dong Bo , Yuan Hong Li , Xu Peng Fei , Liu Feng
Published: July 2013

The quantitative assessment of reliability of Safety Instrument System (SIS) is very important in upgrading its security. The calculation of reliability of SIS based on Markov model has been largely used by scholars and research institutions. Assume that each state has a fixed value in the Markov Model. While in practical application, each state changes from the best status to the second-best status. This thesis will introduce D-S Evidence Theory into Markov Model, fully using SIS Reliability Function and Plausibility Function to reflect the changes of each state and assess its safety more exactly and precisely.