bluuebunny/crossref_metadata_2025 huggingface dataset:
Cognitive Load and Empathy in Serious Games
Authors: Huang Wen-Hao David , Tettegah Sharon Y.
Published: December 2013

The design of serious games does not always address players’ empathy in relation to their cognitive capacity within a demanding game environment. Consequently players with inherent limitations, such as limited working memory, might feel emotionally drained when the level of empathy required by a game hinders their ability to cognitively attain the desired learning outcome. Because of the increasing attention being given to serious games that aim to develop players’ empathy along with their cognitive competencies, such as Darfur is Dying (Ruiz et al., 2006), there is a need to investigate the empirical relationship between players’ cognitive load and empathy development capacity during serious game play. Therefore this chapter examines cognitive load theory and empirical work on empathy development to propose a conceptual framework to inform the research and design of serious games that have empathy as part of the learning outcomes. Future research should focus on implementation and empirical validation of the proposed framework.
Towards a Subjectively Devised Parametric User Model for Analysing and Influencing Behaviour Online Using Neuroeconomics
Authors: Bishop Jonathan , Goode Mark M. H.
Published: December 2013

The quantitative-qualitative and subjectivity-objectivity debates plague research methods textbooks, divide academic departments, and confuse post-modernists as to their existence. Those from the objective-quantitative camps will usually demand methods assume parametric principles from the start, such as homogeneity and normal distribution. Many of the subjective-qualitative camps will insist on looking and the individual meanings behind what someone is saying through their narratives and other discourses. The objective-quantitative camps on the other hand think anything that does not involve systematic acquisition and analysis or data cannot be valid. This chapter presents an approach to derive a parametric user model for understanding users that makes use of the premises and ideals of both these camps.
The Use of Motion Tracking Technologies in Serious Games to Enhance Rehabilitation in Stroke Patients
Authors: Burton Andrew M. , Liu Hao , Battersby Steven , Brown David , Sherkat Nasser , Standen Penny , Walker Marion
Published: December 2013

Stroke is the main cause of long term disability worldwide. Of those surviving, more than half will fail to regain functional usage of their impaired upper limb. Typically stroke upper limb rehabilitation exercises consist of repeated movements, which when tracked can form the basis of inputs to games. This paper discusses two systems utilizing Wii™ technology, and thermal and visual tracking respectively to capture motions. The captured motions are used as inputs to specially designed games, which encourage the users to perform repeated rehabilitation movements. This paper discusses the implementation of the two systems, the developed games, and their relative advantages and disadvantages. It also describes the upcoming testing phase of the project.
An Improved Lane Detection and Tracking Method for Lane Departure Warning Systems
Authors: Hammami Mohamed , Ben Romdhane Nadra , Ben-Abdallah Hanene
Published: December 2013

Lane detection and tracking are very crucial treatments in lane departure warning systems as they help the vehicle-mounted system to keep its lane. In this context, the authors’ work aims to develop vision-based lane detection and tracking method to detect and track lane limits in highways and main roads. The authors’ contribution focuses on the detection step. By exploiting the fact that, in an image, the road can be formed by linear and curvilinear portions, the authors propose two types of appropriate treatments to detect the lane limits. The authors’ method offers high precision rates independently of the painted lane marking’s characteristics, of the time of acquisition and in different weather conditions. Besides the challenges it overcomes, the authors’ method has the advantage of operating with a timing complexity that is reasonable for real-time applications. As shown experimentally, compared to three leading methods from the literature, the authors’ method has a higher efficiency.
FMAMS
Authors: El Yazidi Moulay Hafid , Zellou Ahmed , Idri Ali
Published: December 2013

To access a unified way to different information sources while hiding the user autonomy, heterogeneity, distribution and evolution of these sources, the authors thought to integrate its different sources of information, one of the existing integration approaches is mediation or virtual approach. The integration in mediation approach is done with a schema, called schema mediation, and a set of mapping (links) associating schemas of sources to integrate with the global schema. The problem arises in creating the set of correspondences between the elements of the schema global and all the elements of local schemas, in this paper the authors present their approach FMAMS: Fuzzy Mapping Approach for Mediation Systems, a new approach based on fundamental principles of the theory of fuzzy sets. The authors’ approach is to define and associate to each link between two elements a weight that reflects the degree of its existence, it is present in an analysis using two components: syntactic and semantic.
An Energy-Saving Routing Algorithm for Opportunistic Networks Based on Asynchronous Sleep Approach
Authors: Yao Yu Kun , Liu Wen Hui , Zheng Wen Xi , Ren Zhi
Published: December 2013

The sparse and mobility of nodes in opportunistic networks will cause network topology often fracturing, resulting that a large number of isolated nodes appear in opportunistic networks. These isolated nodes will waste much energy at idle listening stage, so this paper proposes an Efficient Routing algorithm for opportunistic networks based on Asynchronous Sleep Approach-ERASA. ERASA achieves the goal of saving energy by making the isolated nodes enter the low power consumption dormancy state. Then they will be timely awaken when there are other nodes entering into their communication range. Compared with the classical Epidemic routing algorithm, the several aspects performance of ERASA algorithm are improved such as network lifetime.
Generators Bidding Equilibrium Optimization Models in Economic Dispatch with CO2 Emission Constraints-Model Construction
Authors: Tan Zhong Fu , Liu Wen Yan , Ju Li Wei , Liu Hai Bo
Published: December 2013

Power exchange needs to design a mechanism, which can achieve the internalization of environmental costs of power generation enterprises, thus maximizing the social environmental benefits. Two-stage optimization models of energy-saving and emission-reducing for coal-fired power plant are established. In the first stage model, maximums of the social environmental benefits and energy-saving effect are taken as the objective functions with consideration of the unit output constraints, load constraints and emissions constraints, etc. In the second stage model, maximums of power generation enterprises profits are taken as the objective functions with the constraints of KKT conditions of the first stage model. The proposed marginal incentive pricing mechanism not only controlls CO2 emissions from the total amount, but also improves emissions treatment initiative of coal-fired power generation enterprises. A numerical example shows that the proposed model and algorithm can achieve the effect of saving energy, reducing emission and encouraging competition during the process of generation.
Effects of Rapid Thermal Process on the Microstructural, Electrical and Optical Properties of AZO Thin Films
Authors: Liu Rong Bin , Zhang Kai Liang , Yuan Yu Jie , Wang Fang , Xu Juan
Published: December 2013

In this paper, Al-doped ZnO thin films were deposited on glass substrates by RF magnetron sputtering and subsequently rapid thermal processing was executed under temperature range from 300°C to 600°C in order to investigate the microstructure, electrical, and optical properties of AZO films. XRD and AFM microscopy results showed that all the samples were of poly-crystalline and the grain size became larger with the increasing processing temperature. Compared with the sample as-deposited, it was shown that resistivity decreased from 1.9×10-2 to 1.48×10-3Ωcm and carrier concentration increased from 1.48×1020 to 5.59×1020 cm3 when the sample was processed at 600°C in pure nitrogen for 1 min. The highest transmittance of the samples processed at 500°C improves to 90.35% compared with the as-deposited films (68.2% ) as the wavelength varied between 400 and 900 nm.
A 36 GHz CIFF-TFF Dynamic Frequency Divider Using GaAs HBTs
Authors: Wu Li Fan
Published: December 2013

A clock-inverter feed-forward toggle flip-flop (CIFF-TFF) based ultra-high-speed 2:1 dynamic frequency divider is designed in a GaAs heterojunction bipolar transistor (HBT) technology with fT of 60 GHz from Win Semiconductors corporation. The co-simulation methodology of electromagnetic field and schematic diagram is utilized in the design. Through tuning the currents in the core and the other parts of the divider separately, the dynamic frequency divider approaches an operating speed of 36 GHz with a power consumption of 162 mW in the core part from a single 6 V supply. The design is currently taped out.
Optimizing Design of Accessories for High-Voltage XPLE Power Cables
Authors: Yang Chao Jie , Chen Jie , Xie Zhi Song , Zeng Yi Hui , Wang Dao Long , Liang Jian Ming , Fan You Ping
Published: December 2013

This paper describes the optimization design of prefabricated XPLE cable accessories and presents the formula of the design of stress cone. The finite element method for optimizing the design of the electric stress distribution inside the HV power cable joint and adjusting the length and curvature of the stress cone of this termination is discussed. The relationships between dimensions of stress cones structure and the electric field distribution were obtained.
Transient and Permanent Faults Identification on Parallel Transmission Lines
Authors: Rao Yu Fei , Yu Lin Lin , Liu Wei
Published: December 2013

The phase voltage of the tripping phase contains capacitive coupling voltage and inductive coupling voltage. According to the continuous improvement of the national voltage grade, the parallel transmission lines on the same tower are widely used in main transmission section. The protection will trip the fault phases while inner-line or inter-line faults occur. The phase voltage of the tripping phase contains capacitive coupling voltage and inductive coupling voltage. Terminal voltage when the lines are in transient faults is much higher than in permanent faults because of the line discharging by fault point. Simulation studies show that the terminal voltage criterion can distinguish transient and permanent fault in parallel transmission lines.
Field DC Voltage Withstand Test of Submarine Cable in Hainan Grid Connection Project
Authors: Luo Xiao Long , Bie Rui , Zhang Liang , Chen Wei , Fan You Ping
Published: December 2013

500kV Hainan Grid Connection project is the major project connecting Hainan Power Grid to Main China southern power grid. Submarine cable segment is a core part of the whole project. The safety and reliability of the whole project is directly determined by the situation of its main insulation. The submarine cable is affected by a variety of factors in the sectors of manufacturing, transportation and installation. Field voltage withstand test on the submarine cable is of great significance in order to check its insulation condition after installation. In this paper, field DC voltage withstand test of 500kV oil-filled submarine cable is researched. The data obtained in field trials is analyzed to evaluate the main insulation reliability. The results show that the manufacturing quality and the insulation condition installation after laying on site of the submarine cable is reliable, meeting the engineering requirements of safe operation.
Time-Domain Simulation of Power System Frequency Fluctuations Caused by Intermittent Wind Power
Authors: Liu Hao Ming , Zhu Fang Fang , Yang Ke Lin
Published: December 2013

Wind power is uncertain. When the proportion of wind power capacity is large, the impact of the randomness of the output power on the grid frequency is more significant. Aiming at system stability influence after integrating a high capacity of wind turbines, this paper introduces the dynamic simulation model for electric power system with wind power, and makes an equivalent transformation processing for the wind turbine and generator. By using improved Euler method, this paper analyzes the impact of system frequency through time-domain simulation when disturbance occurs at wind farm side. Simulation results show that when wind speed changes, the established model and algorithm can effectively simulate the dynamic response of the frequency, and also these results can provide a reference for the frequency stability when wind turbines integrate into power system.
Determination of Technological Parameters of Vibratory Stress Relief for Radial Steel Gate Structure Based on Finite Element Method
Authors: Fu Jian Ke , Jin Jun , Zhou Xing
Published: December 2013

In order to determining technological parameters and effective range of vibratory stress relief (VSR) treating for the radial steel gate structure, kinetic analysis was carried out according to the industrial standard. The natural frequency, vibration mode and the curves of amplitude-frequency were obtained by using Finite Element Analysis (FEA),which gave some suggestions for reference on how to determine the technological parameters for large-sized welding structures.
Impact Analysis of Electrode Material on Electrical Discharge Machining Polycrystalline Diamond Processing
Authors: Jia Yun Hai
Published: December 2013

The electrode material plays a very important role in the electric discharge machining, affects the electrical discharge machining efficiency and machining surface quality. Experiment testing and materials analysis as the primary method, affect layer thickness and workpiece surface roughness value as evaluation indexes. PCD cutting tool samples were electrical discharge machined using copper electrodes and graphite electrodes respectively. After machining, the PCD cutting tool samples' surfaces were analyzed by X ray diffraction, the surfaces appearances were observed under the scanning electron microscope, and the surface roughness values were measured by roughness measuring instrument. PCD samples' surface effect layer thickness values and surface roughness values, affect layer distribution structure was statically analyzed in typical EDM process conditions with different electrode materials. Summary electrode material effect on PCD cutting tools in EDM processing. Provides an important experimental basis for designing technics of precision and highly efficient electrical discharge machining PCD cutting tools.
Ultrasonic Ranging System Based on Single Chip Microprocessor
Authors: Fu Xian Cheng , Zhou Lei , Wen Guo Jun
Published: December 2013

Ultrasonic ranging (UR) technology has being used widely in many industries around the world. This paper aims to design and manufacture an ultrasonic distance measuring system with lower price and higher accuracy. Based on the deep study of principle of ultrasonic ranging, we designed the general plan and detailed electrical circuits for the ultrasonic distance measuring system based on single chip microprocessor of AT89S52, including the transmitter module of ultrasonic wave, receiving module of ultrasonic wave, display module etc. Then, we compiled the relative driven programs for all modules. After that, we debugged the combined system of hardware and software system. At last, the experimental results show that the cost is about 300RMB for 3 prototypes, measuring rang is 0.16~1.5m with the accuracy of 0.001mm, which means the ranging system meets the design requirements of lower price and higher accuracy.
Sensitivity Analysis of Sensor Probe for Low Thermal Diffusivity Properties Measurement
Authors: Sun Chuang , Zhao Yang , Yue Xian De , Xia Xin Lin
Published: December 2013

Single probe and dual probes are always taken adopt to measure the material's thermal conductivity and thermal diffusivity. The measurement principle of the two kinds of probes is different and introduced in this article. Taken the material which has low thermal diffusivity for example, the single probe and dual probes are compared by the calculation accuracy and temperature response sensitivity. Numerical simulation results show that, under the same conditions, the thermal properties obtained by the dual probes are closer to the true value for the test material, but single probe has more sensitive at temperature response.
Modeling and Simulation for Lifting System of the Gear and Rack Drilling Rig
Authors: Ren F.S. , Chen S.L. , Zhang F.
Published: December 2013

Gear and rack drilling rig is currently the advanced model of oil rig, which rely on the gear meshing with the rack, driven top drive up and down movement. The equivalent model of derrick and lifting system were established, and the Lagrange equation was built by using the method of energy. The dynamic simulation analysis was carried out by using ADAMS automatic analysis of software. Research result show that analysis lifting system of gear and rack drilling rig, the flexibility of the derrick has minimal effect on the acceleration in the bit of vertical direction; Consider the drill string movement suffered damping effect, drilling bit vibration is obvious in the initial time of drilling, but does not affect the speed of drilling and gradually stabilized.
Dynamics Analysis and Simulation of Drum Washing Machine Vibration Isolation System
Authors: Shao Rui Ying , Wang Hong Jun , Song Juan , Wang Hai Yan
Published: December 2013

Based on the theory research and virtual prototype technology, the dynamics characteristics of drum washing machine vibration isolation system is studied and analyzed. According to the Lagrange method, the dynamics equations and motion differential equations of drum washing machine vibration isolation system is established. Through the establishment of rigid parameterized virtual prototype model of the vibration system, dynamics simulation analysis is accomplished based on ADAMS, the kinematics characteristics and mechanical characteristics are obtained.
Numerical Simulation of the Interaction between Surface Waves and Horizontal Plates at Free Surface
Authors: Wu Jing Ping , Xu Ling , Mei Tian Long , Yi Shuai , Wang Li Qun
Published: December 2013

A horizontal plates flock like Lotus leaves can attenuate incident surface water waves. This paper tries to simulate a numerical wave tank by FLUENT CFD software using k-ω turbulence model in a two-dimensional domain. And a 2nd-order Stokes wave is made by the boundary wave-making method, and attenuated by three kinds of horizontal plates flocks with different relative lengths (flock length/wave length). A flock of horizontal plates consists of multiple plates interspersed with gaps. However the leaves have both movement and deformation in waves, giving rise to a difficult fluid-structure interaction problem. Here a simpler case is studied, involving rigid, infinitely thin plates fixed at the still water level. The Four time steps are tried to find such appropriate time step-not only to make satisfied wave contour but also to decrease computing time. The simulations show that the amplitude of the transient wave decreases while the relative breadth increases. The velocity vectors of water partical near the attenuator are showed, and the velocities behind the attenuator do not follow a perfect wave velocity distribution.
The Critical Velocity for an Infinite Cylindrical Shell under a Moving Load
Authors: Zhang Jiu Dan , Zhen Bin , Li Xiang
Published: December 2013

The critical velocity for an infinite cylindrical shell subjected a moving load with a constant velocity is analyzed in this paper. It is found that the critical velocity problem can be translated into a distribution of the real roots of a quadruplicate equation, which can be solved by using Descartes sign method and complete discrimination system for polynomials. Our research shows that the number of the critical velocities for an infinite cylindrical shell always is even number. Furthermore the longitudinal wave velocity is not one critical velocity for the shell. Our results are different from the conclusion drawn by other authors that there are three critical velocities in an infinite shell, and the longitudinal wave velocity is the maximum critical velocity. Then further studies are needed to clarify these questions.
On the Parameter Determination of a Stress Relaxation Model Based on Creep Equations Using Differential Evolution Algorithm
Authors: Zhang Wei Wei , Xu Hong
Published: December 2013

A robust and efficient parameter identification method of the stress relaxation model based on Altenbach-Gorash-Naumenko creep equations is discussed. The differential evolution (DE) algorithm with a modified forward-Euler scheme is used in the identification procedure. Besides its good convergence properties and suitability for parallelization, initial guesses close to the solutions are not required for the DE algorithm. The parameter determination problem of the stress relaxation model is based on a very broad range specified for each parameter. The performance of the proposed DE algorithm is compared with a step-by-step model parameter determination technology and the genetic algorithm (GA). The model parameters of 12Cr-1Mo-1W-1/4V stainless steel bolting material at 550°C have been determined, and the creep and stress relaxation behaviors have been calculated. Results indicate that the optimum solutions can be obtained more easily by DE algorithm than others.
Simulation Research on Movement Precision of Mould-Cut Main Mechanism Considering Three Factors
Authors: Wang Xi Zhen , Shi Li Hua , Chai San Zhong
Published: December 2013

By comprehensive considering of deviations in the bar lengths, elastic deformations and the joint clearances, the simulation research on Movement Precision of Mould-cut main mechanism is carried out. The influencing degree of each influencing factor to its output Precision has been discussed in detail which provides the proof for improving the output Precision of Mould-cut main mechanism.
Establishment and Analysis of the SPSS Based Regression Model on Aerobics Regarding Mid-Aged and Young Women
Authors: Li Ling Shu
Published: December 2013

The paper aims to analysis on the interaction between their mental & physical condition and cardio. The paper is based on SPSS and uses the questionnaire survey and multi-factors regression model. The research population is young and mid-age woman population, aged from 20-40years old, for gym member in Huangpu District. This research shows great value on the improvement of cardio exercise effort and health. The research result shows that the time and frequency of weekly exercise makes significant impacts on reduction of pressure on psychology and physiology and self-assessment of health condition. Insignificant impact is analyses to be presented along with self-assessment on health condition.
Kinematics and Singularity Analyses of a 2-RPU&SPR Parallel Manipulator
Authors: Fan Jian Hui , Li Bin , Zhao Xin Hua
Published: December 2013

In this paper, kinematics and singularity of a 2-RPU&SPR parallel mechanism are analyzed by algebraic method. Firstly, the inverse kinematics of the parallel mechanism is derived. Secondly, the Jacobian matrix of the parallel mechanism is obtained and the singularity of the mechanism is analyzed. Finally, the correctness of singularity analysis of the mechanism is verified by numerical simulations.
BOF Endpoint Prediction Based on Multi-Neural Network Model
Authors: Yue You Jun , Yao Ying Dong , Zhao Hui , Wang Hong Jun
Published: December 2013

In order to solve the problem that the small and middle converters unable to introduce the sublance detection technology to improve the control precision of endpoint because of the constraints of economy and technology, a method which combine the pedigree cluster and neural network is studied, the pedigree cluster divide the large data sets into several categories, the degree of similarity will be relatively high in each category after division, then train neural model for every category. Finally make predictions. Simulation results show that the multi-neural network model has better prediction results.
Personal Identification Using Finger-Knuckle-Print Based on Local Binary Pattern
Authors: Yu Peng Fei , Zhou Hao , Li Hai Yan
Published: December 2013

Over the last ten years, considerable progress has been made on the new hand-based biometric recognition, such as palmprint and hand vein. During this period, it has been proved that Finger-Knuckle-Print (FKP) can be used as a biometric identifier. In this paper, we present an effective FKP identification method based on Local Binary Pattern (LBP), whose idea is to divide the region of interest (ROI) of FKP into a set of sub-image blocks, which can be applied to extract the local features of the FKP. After that, LBP histograms of image blocks in a FKP ROI image are connected together to build the feature vector of the FKP ROI image. In the match stage, histogram intersection distance is applied as the similarity measurement between sample and template. Experimental results conducted on a database of 165 persons (4 fingers per person) show that the proposed method is effective.
Equipment Manufacturing Industry Knowledge Chain Efficiency Prediction Algorithm Based on Improved RBFNN
Authors: Chen Xu Sheng , Xu Chen Peng , Wang Hong Qi
Published: December 2013

A new knowledge chain efficiency prediction arithmetic in equipment manufacturing industry in China was proposed, Radial basis function neural network (RBFNN) was designed, and initial temperature numerical calculation arithmetic was adopted to adjust the network weights. MATLAB program was compiled; experiments on related data have been done employing the program. All experiments have shown that the arithmetic can efficiently approach the precision with 10-4 error, also the learning speed is quick and predictions are ideal. Trainings have been done with other networks in comparison. Back-propagation learning algorithm network does not converge until 2400 iterative procedure, and Efficiency design Radial basis function neural network is time-consuming and has big error. The arithmetic in paper can approach nonlinear function by arbitrary precision, and also keep the network from getting into partial minimum.
Application and Research of Agricultural Irrigation Fertilization Intelligent Control System Based on GPRS DTU
Authors: Wang Yong Tao , Zhang He Xi , Li Jia Chun , Wu Yan Ying
Published: December 2013

This paper developed a intelligent control system that can fertigate according to crops’ requirements. At first, the overall composition of this system was expounded. It used kingview 6.55 and measurement and control center software as the development platform, and HORNER OCS as the core controller, and it constructed agricultural fertigation control system. The communication module is GPRS DTU, and the system pressure adjustment was achieved by frequency converter. Secondly, related technology such as communication protocol, port mapping, dynamic DNS and peanut shells software was introduced. The system software development, database design and public based on the Internet was completed. The system test results show that the system was fully function, stable running, and met actual demand of water and fertilizer management in agriculture.
Intelligent Circuit Breaker Switch Controller Design Based on Micro-Grid Operation
Authors: Luo Hai Bing , Wang Wei , Chen Wei Min
Published: December 2013

This document researchs and designs an intelligent circuit breaker switch controller based on micro-network operation, it can be safely and flexibly used for micro-grid and grid switching. The controller has the basic functions of the three segments of the current protection, thermal memory, self-diagnosis, pre-alarm, real-time monitoring and so on. Further, in order to meet the needs of the smart grid, according to IEC61850 standard statute, the intelligent controller designs a communication interface unit so that it can communicate with the smart device which also complying with the IEC61850 statute. The experimental results show that the controller not only has good real-time performance, but also low cost, small size, easy to implement.
Research on Flower Room Temperature and Illumination Control System
Authors: Wen Hong Yuan , Jing E Lin , Zhang Peng
Published: December 2013

Flower room as a special relatively closed environment, the change of room temperature and illumination is the most significant impact on crops. Aiming at the problem of high cost of the current control system, a new temperature and illumination control system for flower room is presented based on single chip microcomputer. The system obtains current temperature and illumination value depends on the temperature sensor and the photosensitive sensor, and then they will be compared with the setting threshold range. If the measured value is within the range, the original sate will remains unchanged. If outside the range, the control system will be activated to realize the corresponding adjustment, and at the same time the real time information could be displayed on the LCD screen accurately. The result shows the system works stably and it has good application value.
Hydraulic Transmission and Control Technology Based on Energy-Saving
Authors: Zhang Zhu Xin , Liang Li
Published: December 2013

Analyze the development course of hydraulic transmission and control technology from the perspective of energy conservation. Introduce several kinds of hydraulic components and hydraulic system of the application of energy conservation, the development trend of energy saving of hydraulic system is expounded. Provide some reference for reasonable design and high efficient application of hydraulic system.
Design of Task System for Live Working Robot Based on Task-Flow
Authors: Lu Shou Yin , Liu Zhen Na , Liu Jin Cun
Published: December 2013

A new task-flow based task system has been developed for live-line maintenance tasks done by a live working robot. Its aim is to improve the procession efficiency and intelligent of human-computer interaction. This system design is based on a new approach of task-flow. This paper introduces characteristics and function of each parts of live working task system, impresses connection and relationship between the task flows. The results of a system experiment confirmed that the system enables the live-line maintenance tasks to be performed orderly and efficiently in accordance with the task procedure.
Research on Control System of Steam Scallop Shelling Machine
Authors: Zhang Jing , Yi Jing Gang , Jiang Hai Yong , Wang Jia Zhong , Liu Jiang Tao
Published: December 2013

Steam control system of the steam scallop shelling machine is the key to ensure the stability and the continuous jet of steam during the process of scallop shell. This paper on the basic composition of steam generator, PLC, touch screen program design, several aspects of temperature sensor, pressure transmitter and so on. Through the transformation of the control system of steam generator, which can meet the design requirements of the task.
Research and Design of Vehicle Mobile Terminal Based on Android
Authors: Zheng Jian Hong , Wei Tao
Published: December 2013

System software program of ARM11-based vehicle mobile terminal is put forward in the paper, the program is in the core of AGPS technology and implements vehicle position. And it can communicate between the vehicle and control center through the GPS and LTE technology. The experimental results show that the program achieved a new vehicle applications and there is seamless connectivity between the vehicle and sensors devices, it has a good feasibility and reliability.
Study on the Algorithm for Evaluation of Converged Network Performance Based on QoE
Authors: Du Yu , Yan Ying Wei
Published: December 2013

In converged networking, the evaluation of network performance is completed by analyzing the key performance indexes which can reflect the states of network from the point of user view and integrated results should be evaluated by user or quality of experiences. This paper proposes the algorithm for evaluation of network performance based on the fuzzy analytic hierarchy process that utilizes strategy data and key performance indexes to calculate the integrated results of evaluation. The result provides the necessary reference for the real-time monitoring of network.
A Dynamic Resource Allocation Framework in the Cloud
Authors: Zhang Hai Rui , Yang Yi , Li Lian , Cheng Wen Zhi , Ding Cong
Published: December 2013

In this paper, we present and study a new system framework, which achieves allocation of cloud resource and guarantees response time of application requests and service rate of cloud resources. This architecture consists of three important components: queue controller, resource monitor and scale controller. The system leverages priority queue is used to assure response time of application requests. The resource monitor will measure the workload and resource status in cloud environment. In scale controller, an algorithm is proposed to guarantee service rate by adding/reducing cloud resources and address the tradeoffs between cost and service rate to avoid a waste of cloud resources. Finally, we evaluate this system framework through verifying feasibility and stability.
Inclined Injection of Supersonic Steam into Subcooled Water: A CFD Analysis
Authors: Khan Afrasyab , Sanaullah Khairuddin , Takriff M. Sobri , Zen Hushairi , Fong Lim Soh
Published: December 2013

The phenomenon of direct-contact condensation gains attention because of various industrial applications; nuclear reactor emergency core cooling systems,steam driven jet injectors, direct-contact heat exchangers etc..The phenomenon was investigated computationally by injecting an inclined steam jet using a supersonic nozzle submerged in subcooled water. The condensation mechanism is based on two resistance model, which involves consideration of the heat transfer process on both sides of the interface along with use of a variable steam bubble diameter. For computations, ANSYS Fluent based Euler-Euler multiphase model is used. The angle of inclination varies from 5o to 45o at constant inlet pressure of 7 bars with water temperature of 30°C. The maximum penetration length is achieved using a right angled vertical injection.
Blade Faults Classification and Detection Methods: Review
Authors: Hee Lim Meng , Leong M. Salman , Hui K.H.
Published: December 2013

Blade faults are ranked among the most frequent causes for gas turbine failures. This paper provides a review on the types of blade faults as well as its pertinent detection methods. In this paper, blade faults are categorized into five major groups according to their nature and characteristics namely, blade rubbing, blade fatigue failures, blade deformation, blade fouling, and blade root related problems such as cracked root and loose blade. This paper aims to provide an overview on the characteristics of each type of blade fault as well as its best detection methods available to date.
The Effectiveness of Bioremediation Treatment for Diesel-Soil Contamination
Authors: Sunar Norshuhaila Mohamed , Emparan Quin , Abdul Karim Ahmad Tarmizi , Noor S.F.M. , Maslan M. , Mustafa F. , Khaled N.
Published: December 2013

Abstract. Soils are increasingly threatened by spillage of petroleum products such as petrol, diesel fuel, gasoline at oil refineries, underground storage tanks and pump stations pipelines. This study aims to investigate the effectiveness of Pseudomonas putida as oil-biodegradable agent in soil contaminated with diesel (D100). The effectiveness on bioremediation have been conducted by examined several physico-chemical tests on diesel-contaminated soil before and after seeding with P. putida. The spillage stimulation of D100 was conducted at laboratory scale for 24 days of incubation time. The results show that the bioremediation treatment able to remove up to 82%, 55%, 48%, and 34% of nitrogen, total organic carbon, phosphate, sulfate and, respectively. The pH of soil sample was changed from pH 7.8 (Day 0) to 6.78 (Day 24) after the treatment. Meanwhile, the moisture content in the sample has increased from 39% (Day 0) to 59% (Day 24). All of these results show the good indication of quality improvement of polluted soil after treated with P. putida. It is apparent from the acquired results that the application of P. putida is suitable as effective microorganism and potentially exploits as useful diesel-soil biodegradable agent in polluted soil.
Determining the S-N Fatigue Curve for Lava Zirconium Dioxide
Authors: Wirwicki Mateusz , Topoliński Tomasz
Published: December 2013

Zirconium dioxide is a material which over the recent years has been winning support among dental technicians and dentists. Due to its chemical composition and mechanical properties is can replace non-aesthetic caps or metal crowns. In their paper the authors have focused on the analysis of the material itself; zirconium dioxide under the trade name LAVA and assumed a single treatment technology developed together with dentists. The main objective of the study was to determine the S-N curve for the material that is zirconium dioxide. The next step for the authors was to perform a static three-point bending. Fatigue testing covered a group of 30 specimens which were then used to determine the S-N curve for zirconium dioxide. The authors determined the S-N curve thanks to which the dentists are able to predict the destruction of the construction element which presents all-ceramic substructure. In the lecture review and according to authors it is said that in the aqueous environment the values of stress are similar with the dry environment and are within 850 MPa.
Evaluation of Epoxidized Natural Rubber Latex Based Pressure Sensitive Adhesives Containing Hydrocarbon and Rosin Ester Tackifier Dispersions on Adhesive Properties
Authors: Rohani Abu Bakar , Jaswan Manroshan Singh , Devaraj V.
Published: December 2013

Epoxidized natural rubber latex with 50 mole % epoxidization referred to as ENR50 L was produced by in situ generated peracids. ENR50 L was subsequently concentrated to ENR50 L concentrate (ENR50 LC) via ultrafiltration membrane separation process. Both, ENR50 Latices (ENR50 L and ENR50 LC) were evaluated for the formulation of latex-based pressure sensitive adhesives (PSAs). In this work, evaluation of hydrocarbon and rosin ester tackifier dispersions in ENR50 Latices - based PSAs were performed through viscosity and peel adhesion test. The viscosity of latex-based PSAs containing hydrocarbon tackifier increased with increasing level of ENR50 Latices. However, the trend for latex-based PSAs containing rosin ester tackifier was inversely proportional to the level of ENR50 Latices. The peel adhesion of ENR50 Latices - based PSAs containing hydrocarbon tackifier was found greater than that of ENR50 Latices based PSAs containing rosin ester tackifier. Furthermore, the peel adhesion of ENR50 LC based PSAs was marginally higher than ENR50 L based PSAs.
Mathematical Modeling of Decarburization and Oxidation during Reheating Process of SAE1070 Steel Billets
Authors: Gouveia W.A. , Seshadri Varadarajan , Silva I.A. , Silva C.A.
Published: December 2013

The SAE1070 steel grade, used especially in the automotive industry, has strict specifications and some of them are limits to oxidation and decarburization, which implies carbon loss through a variety of diffusion mechanisms. Temperature, atmospheric oxygen potential, carbon chemical potential gradient and time of high temperature exposure are some of parameters, that influence the extent of decarburization. Oxidation influences decarburization losses, in the metal/oxide interface, and as a result of this interface moves into the sample. During the reheating of billets for hot rolling, measures to contain oxidation to the minimum becomes a priority. In this work, the extent of oxidation and decarburization has been studied in the laboratory under industrial conditions as industrial scale experiments are expensive and not very practical. Mathematical modeling based on the results of laboratory experiments becomes attractive as this can be applied to industrial conditions. Isothermal tests for the evaluation of oxidation and decarburization were conducted in an electric furnace in the temperature range 600°C - 1100°C and time ranging from 2 hours to 48 hours. Decarburization and oxidation were measured by techniques such as weight change ue to removal of scale, micro-hardness testing and optical microscopy. Based on the methodology ,an algorithm has been developed for assessment of oxidation and decarburization occurring in the industrial reheating of billets With minor adjustments, it is shown that, the model can be satisfactorily applied with reasonable accuracy.
Keywords: Decarburization, Oxidation , Steel billets , Modeling
Finite Element Analysis of Fatigue in Pipelines due to Slug Flow
Authors: Mohmmed Abdalellah Omer , Al-Kayiem Hussain Hamoud , Nasif Mohammed S. , Mohammed Zahid Ibrahim
Published: December 2013

Transportation of Oil and Gas from the production site to the terminal or refinery requires the use of long pipelines which procure to develop slug flow regime. This slug may cause cyclic stresses leading to fatigue and results in damaging the pipelines. This paper aims to utilize that design guide and calculate the total fatigue life for the pipeline due to internal slug flow by performing evaluation of the stress range and fatigue life span of the pipeBeam 3element with moving loads in ANSYS commercial software have been used to simulate the slug flow across the pipeline and assess the dynamic response. The total fatigue life for different selected slug parametrs was calculated. The model was validated by comparing with analytical solution in a previous published research and reasonable agreement was revealed. The results show that increasing the slug to pipe weight ratio resulting in higher dynamic stresses and reduction in the fatigue life of the pipe. This model can be utilized for the offshore pipeline if the external environmental effects are considered.
Mechanical Behavior of Functionally Graded Sandwich Hollow Cylinders under Internal Pressure
Authors: Almula Thamir Aunal Deen Mohammed Sheet , Yazid Yahya Mohd , Amran Ayob
Published: December 2013

In this investigation, the mechanical behavior of sandwich hollow cylinders under internal pressure is carried out numerically. Functionally Graded (FG) foam core sandwich hollow cylinders are fabricated by employing filament winding technique with [±55] carbon fiber/epoxy as skins with the FG foam core made using centrifugal casting technique of polyurethane foam with epoxy resin. A finite element (FE) model is developed employing a FE commercial code to determine the stresses and deformations. Numerical analysis is performed to find the effect of one particular functional grading on the deformation and stresses. The results are compared with similar tubes using uniform PU foam core. The results show that grading the foam core affects the displacements and stresses in a significant way. The FG foam sandwich core tube possesses a lower displacement magnitude and higher maximum stresses taking into account the mass of the two types of pipes and rigidity compared to uniform PU foam core under internal pressure of 10 MPa.
Visible-Light Photodegradation of Diisopropanolamine Using Bimetallic Cu-Fe/TiO2 Photocatalyst
Authors: Ramli Raihan Mahirah , Kait Chong Fai , Omar Abdul Aziz
Published: December 2013

Titania nanoparticles, TiO2 were synthesized via microemulsion method prior to monometallic (Fe, Cu) or bimetallic (CuFe) incorporation using wet impregnation method. The prepared photocatalysts were characterized using X-ray diffraction, field emission scanning electron microscopy, diffuse reflectance UV-Vis spectroscopy and point of zero charge. The addition of metals, especially Cu enhanced the absorbance in the visible region. The lowest band gap was observed for the bimetallic Cu-Fe/TiO2 (2.77 eV) compared to bare TiO2 (3.05 eV). The performance of the photocatalysts for photodegradation of diisopropanolamine (DIPA) at pH 8 was determined using a batch glass reactor under simulated sunlight (980 W/m2). The best performance was displayed by Cu-Fe/TiO2 with the highest DIPA removal of 92%.
Preparation of Ni Loaded on Zeolite and its Application for Conversion of Glycerol to Hydrogen
Authors: Mat Ramli , Buhari Junaidah , Mohamed Mahadhir , Johari Anwar , Tuan Abdullah Tuan Amran , Ali Asmadi
Published: December 2013

Glycerol is the main by-product of biodiesel production and during the trans-esterification reaction, about 10 wt % of glycerol is produced. In this study, different amount of Ni was loaded on HZSM-5 and tested for the conversion of glycerol to hydrogen. The studies were also conducted at different reactor temperature of 450, 500, 550, 600 and 650°C respectively. The structural characterization of the catalyst was carried out using the XRD. It was found that, the addition of 15 wt % of nickel loaded on HZSM-5 shows the highest glycerol conversion of 98.54%. In addition, it produces the highest yield of hydrogen gas operated at reactor temperature of 600°C.
Knowledge Spillover, Absorptive Ability and Performance of Firms in High-Tech Clusters
Authors: Pan Zhong Zhi , Liu Yu Hang
Published: December 2013

This paper shed lights on the effects of knowledge spillover on innovation performance of firms in high-tech cluster. There is more knowledge spillover in clusters than other area. Firms in clusters have higher absorptive ability than firms outside of cluster, there is also interaction between firms absorptive ability and different sources of knowledge stock. Knowledge spillover from cluster internal knowledge stock is more important than that from external knowledge stock.
ANFIS Based Effluent pH Quality Prediction Model for an Activated Sludge Process
Authors: Gaya Muhammad Sani , Wahab Norhaliza Abdul , Sam Yahya M. , Samsuddin Sharatul Izah
Published: December 2013

Activated sludge process is the most efficient technique used for municipal wastewater treatment plants. However, a pH value outside the limit of 6-9 could inhibit the activities of microorganisms responsible for treating the wastewater, and low pH value may cause damage to the treatment system. Therefore, prediction of pH value is essential for smooth and trouble-free operation of the process. This paper presents an adaptive neuro-fuzzy inference system (ANFIS) model for effluent pH quality prediction in the process. For comparison, artificial neural network is used. The model validation is achieved through use of full-scale data from the domestic wastewater treatment plant in Kuala Lumpur, Malaysia. Simulation results indicate that the ANFIS model predictions were highly accurate having the root mean square error (RMSE) of 0.18250, mean absolute percentage deviation (MAPD) of 9.482% and the correlation coefficient (R) of 0.72706. The proposed model is efficient and valuable tool for the activated sludge wastewater treatment process.