bluuebunny/crossref_metadata_2025 huggingface dataset:
Experimental Study on the Effects of Water Content to Cement Soil
Authors: Wen Yong Qin , Shen Xiang Dong , Cui Chao , Cui Ya Ping
Published: December 2013

With pumice as the additive agent used in cement composite soil.In order to test the strength of the composite cement soil,the triaxial shear test were tested in the lab with different water content (10%,15%,20%,25%), different curing periods (7d,28d,60d),The results show that the strength of the composite cement soil first added,and then reduces. there is an optimum amount 15%.The pumice powder may evidently improve the mechanical properties of soft soil which has the characteristic of rich-water content.
Model Test and Finite Element Analysis of Squeezed and Branch Pile Bared Vertical and Horizontal Loads
Authors: Li Yue Hui , Gao Xiao Juan , Zhong Guo Hua
Published: December 2013

Model tests of the squeezed and branch pile with or without vertical load are carried out and the horizontal load bearing capacity are studied in this paper. Based on the model test results, the influence of vertical load to squeezed and branch pile horizontal load bearing capacity and the influence of horizontal load to squeezed and branch pile vertical bearing capacity are analyzed with FEM. The analysis results show that the vertical load may increase the lateral bearing capacity of pile, and the horizontal load may decrease the vertical settlement, but horizontal load may increase the horizontal displacement and moment of the pile body and lead to instability and cracking failure. This should be pay more attention in the practical engineering.
DEM Simulation Study of Crosscutting Speed for the Cutting Header
Authors: Ji Yu Jie , Li Rui Kai
Published: December 2013

For studying the working performance of the cutting header, the paper puts forward using DEM to study its dynamic breaking process when it is for cutting coal rock. The model of cutting header and the model of the two-dimensional DEM simulation analysis are set up separately. By applying reasonable mechanical model into coal rock particles and the cutting header, DEM simulation analysis of its cutting process is carried out. Such analysis is taken at different cutting speed. Then, the way of selecting working parameters is got. It preliminarily proves the feasibility of using DEM to analyze the working procedure of the cutting header and it provides a new research method for its optimization design.
Research on the Semi-Physical Simulation Technology of High Pressure Common Rail Electronic Control System for Low-Speed Marine Diesel Engine
Authors: Wang Qin Peng , Yang Jian Guo , Yu Yong Hua
Published: December 2013

In this paper, the semi-physical simulation technology is introduced with the design and implementation of a semi-physical simulation test bench. A certain low-speed marine diesel engine of high pressure common rail (HPCR) electronic control system is taken as the subject of the test bench. In order to retain the functional and structural features of the HPCR electronic control system, the essential components are in consistent with the target engine, and some auxiliary parts are simplified and reformed. Specially, a real-time simulation model is built based on the principles of Mean Value Engine Model and cylinder moving method, which captures the requirements of ECU, such as the crank angle, the exhaust valve stroke signal, the scavenging pressure and so on. Therefore a closed-loop control system is accomplished including a real-time controller deployed in the simulation model, ECU and the executing agency of HPCR system. Additionally a monitoring management system is developed for the test bench with the functions of acquiring signals, monitoring parameters, storing data, alarming and etc. Finally, some tests are finished in the test bench and through analyzing the experimental results, the test bench can perform the characteristics and functions of the HPCR electronic control system. The semi-physical simulation technology can be used for the functional verification and performance test of HPCR electronic control system for the low-speed marine diesel engine.
The Establishment of Distribution Model of Inner Surface Pressure of Elbow Pipe Based on FLUENT
Authors: Lu Xiao Yang , Zheng Wei , Huang Li Li , Zhou Yong , Zhu Hong Liang
Published: December 2013

The processes of the fuild through the elbow pipe under different conditions are simulated by the FEM software named FLUENT. Then, the effects of varied parameters on the distribution of pressure on inner suface of elbow pipe are studied with dimensionless analysis method. Finally, a distribution model of pressure at the the minimum life section where the axial angle α is 45°, degree of curvature k=R/d, circle angle β, fluid density ρ, fluid outlet pressure P0 and fluid velocity v is built and verified by fitting the simulation data. The research conclusion lays the groundwork for strength check and structural design of the elbow pipe
Design and Analysis of a Magnetic QZS Vibration Isolator
Authors: Li Hui , Zhang Jing
Published: December 2013

In this paper, a novel nonlinear magnetic vibration isolator is developed. The developed isolators possess the characteristic of quasi-zero stiffness (QZS). It is obtained by connecting a vertical coil spring with two permanent magnet springs in couple with three permanent magnets. Firstly, the permanent magnet spring is introduced, and approximate expression of repulsive force in the permanent magnet spring is proposed. Secondly, characteristic analysis of system is investigated. It is shown that there is a unique relationship between the stiffness of vertical spring and parameters of system that yields a QZS system. The approximate stiffness of QZS system can be used instead of the analytical stiffness in dynamic analysis.
Application of Wireless Communication Technology in the Detection and Debugging for Control System on Bullet Trains
Authors: Tan Xiao Dong , Du Lin , Song Pi Wei
Published: December 2013

To solve the problem of digital debugging on bullet trans.A technology based on wireless communication in the detection and debugging for control system on bullet trains is proposed.The method is used to communicate between the wireless device on the host computer and the debugging equipment in the train, and the host computer can communicate with debugging equipment inside or outside the train.In the communication process, the environmental compartments need to be considered.The mathematical model is established based on the environment inside and outside the train for numerical calculation.The plane electromagnetic wave theory and the Fresnel formula is used for simulation analysis.The electromagnetic wave inside and outside the train is simulated with MATLAB.Finally the field test is carried on. the result shows that the technology can be effectively applied in the detection and debugging for control system on the train .
Importance Analysis Method of Fuzzy Fault Tree Based on T-S Modle and Application in Hydraulic System
Authors: Zhang Lu Lu , Zhang Rui Jun , Si Xin Xin
Published: December 2013

In order to overcome the shortage of dealing with fuzzy information and uncertainty of fault logical relationship in traditional importance measures, the fuzzy set theory is presented to fault tree, using fuzzy number to describe the fault states of system and components, and using fuzzy subsets to denote the fault rates, a fuzzy fault tree of T-S modle was established. And a model of fuzzy fault tree was established and a T-S fuzzy importance analysis method was presented on the basis of T-S analysis method. The method is applied in the importance analysis of hydraulic system, and proving that the algorithms are feasible.
Indirect Carbon Emission Measurement of Electric Vehicle in China
Authors: Huang Shou Jun , Ren Yu Long
Published: December 2013

The issue of carbon emissions by electric vehicle(EV) was studied using life cycle theory, and the work provided decision basis for creating China’s CO2 emission standards for auto. The results show that the carbon equivalent emission of coal-fired generation side per unit electricity consumed by EV is lower than the level of normal passenger car in China, but still higher than the forced limit on auto emission within the EU.
Analysis on Consolidation and Settlement Characteristics of Composite Foundation with T-Shaped Bidirectional Soil-Cement Deep Mixing Columns
Authors: Xi Pei Sheng , Liu Bo
Published: December 2013

Based on the solution of one-dimensional consolidation model of T-shaped bidirectional soil-cement deep mixing column composite foundation and its calculating program deduced by the separation of variables and Laplace method. This paper discussed the consolidation and settlement characteristics of composite foundation under the conditions of different loading modes, foundation reinforcement modes, diameter of enlarged pile head and pile spacing. The results indicate, the soil layer in the region of enlarged pile head hardly be influenced by above factors, the lower soil layer and soft substratum soil are influenced greatly. Loading mode has a large effect on the consolidation, when loading instantaneously, the rate of consolidation is faster than that of loading constantly. The consolidation and settlement behavior of composite foundation reinforced by T-shaped bidirectional soil-cement deep mixing column and traditional bidirectional deep mixing column is much better than the original natural foundation. When the other parameters stay the same, consolidation degree and total settlement decrease with the increase of enlarged pile head diameter. With the increase of pile spacing, consolidation rate of the composite foundation decreases significantly, but the settlement value increases rapidly on the contrary.
Vibration Transmissibility on Foot during Controlling and Operating Car Accelerator Pedal
Authors: Yusoff A.R. , Deros Baba M. , Daruis D.D.I
Published: December 2013

The purpose of this paper is to discuss the vibration transmissibility from a cars body to pedal-pad, and the lower extremity, especially on the foot. The vibration transmissibility will occur when the foot interacts with the pedal-pad once the vehicle engine is turned on. The vibrations transmissibility will cause drivers discomfort, especially on the lower extremity due to fatigue and tiredness of the foot. The relationship between vibration transmissibility with the different sizes pedal-pad to the foot, and whether it can contribute to the foot discomfort during handling and controlling pedal-pad while driving is investigated. The variables are the different sizes of pedal-pad. Data was recorded from foot on three different sizes of pedal-pads. The data was measured in root mean square (r.m.s) unit, of the frequency weighted acceleration (m/s2) for every minute. The result for the foot-transmitted-vibration shows the ratio value of medium sized pedal-pad is greater than 1; compared to small sized and large sized pedal-pads which is less than 1. Analysis of One-way Anova shows that the mean of different sizes of pedal-pad is significant. Tukeyspost-hocwith HSD (Honestly Significant Difference) test on the foot transmitted-vibration proves that the means for medium size pedal-pad is the highest compared with the small and large size pedal-pads.
Prediction Head Acceleration from Hand and Seat Vibration via Artificial Neural Network Model
Authors: Gohari Mohammad , Rahman Roslan Abdul , Tahmasebi Mona
Published: December 2013

Transmitted vibration from hand to the human body is one of the oscillation sources which are a reason of pain in shoulders, neck and arms. Design vibration isolators or seat suspensions require an accurate biodynamic model which can consider both vibration sources; hand and seat. For this purpose, an artificial neural network model was established which is able predict head acceleration from hand and seat excitation. Average of error in signal prediction in this model is around 3.5%, and this issue made appropriate this biodynamic model to use in the next studies especially for suspension designs.
Utilization of the Acoustic Emission Technology in Bone Tissues
Authors: Loman Miminorazeansuhaila , Husin Che Ku Eddy Nizwan Che Ku , Yusof Mohd Imran , Yusof Mohd Fadhlan
Published: December 2013

The main subject of this study was to establish a meaningful significance of the acoustic emission technology to be incorporated in the pedicle screw fixation procedure. Its purpose was to find a replacement technique using the acoustic emission technology instead of keep using the conventional way which only depends on the surgeons expertise. The experiment of pedicle screw fixation method work was carried out on a goats vertebrae as a lab scale material instead of the human cervical vertebrae. While the experimental work was done, the acoustic emission signatures were then acquired using the Physical Acoustics acoustic emission data acquisition system. Once completed, the acoustic emission signatures were then analysed using Matlab software together with the AEWin software package. From the results obtained, the numbers of data counts are generally bigger for the pedicle screw fixation procedure at early stage of bone penetration compared to the latter. It is significant to the different structure of bones as hard bone technically takes more time to be penetrated compared to the soft ones. This technique undoubtedly has high potential to be studied further so that it can be commercialized into the medical field.
Monitoring System of Fuel Injector Using Piezoelectric Sensors
Authors: Mohd Sabri Mohd Anas , Nuawi Mohd Zaki , Tahir Mohd Faizal Bin Mat , Abdullah Shahrum , Bahari Abdul Rahim , Hamzah Firdaus Mohd
Published: December 2013

The performance of a fuel injector greatly influences the performance of a vehicle engine. An effective monitoring system is capable of detecting damage, instability, and even the life of fuel injector. In this study, a test rig on fuel injector using piezoelectric film sensor has been developed. Three parameters, namely, pulse width at 5, 10, and 15 ms; frequency at 17, 20, and 25 Hz; and pressure at 10, 50, and 70 bar were used for observation. These parameters were set at different combinations to obtain the different injection patterns of the fuel injector. Statistical methods were used to analyze the data, with the aid of the Matlab software. The injection pattern was described using a new I-kaz (Ƶ) statistical parameter, which is intended to provide a simple explanation of the corresponding correlations between the coefficient of I-kaz and the statistical parameters, such as root mean square, Skewness, and Kurtosis, to obtain effective information on the operation state of the fuel injector. The results showed that higher pulse width results in a higher I-kaz coefficient, which also increases with an increase in frequency and varies with pressure; however, the pattern depends on the pulse width. The I-kaz scatter graph against skewness showed a clear pattern among the statistical parameters. The corresponding correlation was useful for monitoring the fuel injector and can be used as a reference for future studies.
Preliminary Study of Fuel Injector Monitoring System by I-KazTM Multilevel Analysis
Authors: Karim Zailan , Jusoh M.A. , Bahari A.R. , Nuawi Mohd Zaki , Ghani Jaharah Abd. , Abdullah S.
Published: December 2013

Fuel injector in automotive engine is a very important component in injecting the correct amount of fuel into the combustion chamber. The injection system need to be in a very safe and optimum condition during the engine operation. The mulfunction of the injection system can be avoided if the current working condition is known and a proper maintenence procedure is implemented. This paper proposes the development of a fuel injector monitoring method using strain signals captured by a single-channel strain gage attached on the fuel injector body. The fuel injector was operated under three main sets of parameters; pulse width (ms), frequency (Hz) and pressure (bar) which were varried from 5 ms to 15 ms, 17 Hz to 25 Hz and 10 bar to 70 bar respectively. The settings produce 27 different engine operations and the strain signal will be captured at each operation. The captured strain signals will be analyzed using I-kazTM Multilevel technique and will be correlated with the main parameters. The relationship between the I-kazTM Multilevel coefficient and the main parameters indicate good correlations which can be used as the guidance for fuel injector monitoring during actual operation. The I-kaz Multilevel technique was found to be very suitable in this study since it is capable of showing consistence pattern change at every parameter change during the engine operation. This monitoring system has a big potential to be developed and improved for the optimization of fuel injector system performance in the automotive industry.
Fatigue Damage Assessment Correlating with I-Kaz Coefficient
Authors: Padzi Mahfodzah M. , Abdullah S. , Nuawi Mohd Zaki
Published: December 2013

This paper describes the correlation between fatigue life with the I-kaz coefficients. Fatigue tests were performed according to the ASTM E466-96 standard with a strain gauge attached to the specimen being tested. AISI 1045 carbon steel was used as the material for this test due to its wide applications in the automotive and machinery industry. Fatigue tests were carried out at several constant loading stresses of 610 MPa, 650 MPa and 690 MPa at the sampling frequency of 8 Hz. A set of data acquisition system was used to collect the fatigue strain signals. The integrated Kurtosis-based algorithm for Z-filter (I-kaz) technique had been used to find the I-kaz coefficient. The I-kaz coefficient is found to have a good correlation with fatigue life, other than can represent fatigue damage.
Structural Reliability Analysis Using Fuzzy Finite Element Method
Authors: Yusmye A.Y.N. , Goh B.Y. , Ariffin A.K.
Published: December 2013

The main requirement in designing a structure is to ensure the structure is reliable enough to withstand loading and the reliability study of structure. Classical and probability approach was introduced to analyse structural reliability. However, the approaches stated above are unable to take into account and counter the uncertainties arising from the natural of geometry, material properties and loading. This leads to the reduction in accuracy of the result. The goal of this study is to assess and determine the reliability of structures by taking into consideration of the epistemic uncertainties involved. Since it is crucial to develop an effective approach to model the epistemic uncertainties, the fuzzy set theory is proposed to deal with this problem. The fuzzy finite element method (FFEM) reliability analysis conducted has shown this method produces more conservative results compared to the deterministic and classical method espacially when dealing with problems which have uncertainties in input parameters. In conclusion, fuzzy reliability analysis is a more suitable and practical method when dealing with structural reliability with epistemic uncertainties in structural reliability analysis and FFEM plays a main role in determining the structural reliability in reality.
Infinite Boundary Element Formulation for the Analysis of CP System for Submersible Pump
Authors: Safuadi M. , Fonna S. , Ridha M. , Zebua  , Ariffin Ahmad K. , Daud A.R.
Published: December 2013

The effectiveness of the cathodic protection system is very important to be maintained for the submersible pump structure. Early damage of the infrastructure can be caused by improper design of the protection system. However, nowadays the effectiveness of the cathodic protection system could not be evaluated before the system applied in the field. This study is conducted on development of 3D infinite domain boundary element method (BEM) to evaluate the cathodic protection system for submersible pump structure using aluminum sacrificial anode. In this study, the potential in the domain was modeled using Laplace equation. The equation was solved by applying BEM, hence the potential distribution and current density on the metal surface and at any location in the domain can be obtained. The numerical analysis result shows that the 3D infinite domain BEM can be used to simulate the cathodic protection system. Moreover, the execution time for infinite domain BEM is less than the finite domain for the evaluated case.
Preliminary Investigation on the Perforated Panel Mobility Using Finite Element Method
Authors: Putra Azma , Rivai A. , Mun Wai C. , Muhammad Noryani
Published: December 2013

Introduction of holes into plat-like structures is commonly found as one of practical noise control measures to reduce sound radiation. However, perforation into the panel also reduces the panel stiffness and hence increases its vibration. Since the discussion and also the analytical model to quantify this effect are lacking, this paper discusses the dynamics of a perforated panel from the results obtained using Finite Element Method (FEM). Different hole geometries are simulated to investigate their effect on the plate mobility. It is found that increasing the perforation ratio increases the plate mobility particularly at off-resonance peaks. The effect of hole size and number are also discussed in this report.
Study of Noise, Vibration and Harshness (NVH) for Malaysian Army (MA) 3-Tonne Trucks
Authors: Aziz Shamsul Akmar Ab , Nuawi Mohd Zaki , Mohd Nor Mohd Jailani , Daruis Dian Darina Indah
Published: December 2013

Moving vehicle will produce dynamic excitation and can be categorized in the study of noise, vibration and harshness (NVH). Studies of NVH can resolve issues associated with the use of a vehicle comfort. Exposure to some level of noise and vibration can be classified as a danger to vehicle passengers if they are exposed in a standard eight-hour time period. Therefore NVH aspect is the most important aspect in selecting a military vehicle other than the factor of safety, reliability, fuel consumption and maintenance costs. This study was carried out on Malaysian Army (MA) 3-tonne truck drivers who are exposed to noise and vibration produced by the truck. Vibration exposure at seat, steering wheel and body floor was measured using tri-axial and single axis accelerometers which were connected to a Brüel & Kjær Type 3649 vibration analyser, while noise exposure was measured at the drivers ear position using a DuO smart noise monitor. From the results obtained, both vibration and noise pressure levels increased proportionally with the increasing speed of the truck. In the long-term, will have an impact on the health of the truck drivers.
Influence of Silica Sand Particles on Disc Brake Squeal Noise
Authors: Mat Lazim Ahmad Razimi , Abu Bakar Abd Rahim , Hamid Mohd Kameil Abdul , Asri Izzat Mohd
Published: December 2013

Researchers in recent years begin to explore on tribological behavior of automotive brake squeal phenomena which covers the morphology, chemical composition, friction and wear, phase composition and third body or friction film distribution. However less effort has been made to study the tribological on the influence of small particles on brake squeal. During braking condition, both rotor and pads are exposed to road environmental particle which may affect pads surface condition. In order to assess the influence of this particle on brake squeal a series of squeal tests were performed. Silica sand grit particles with a size range between 400 to 200 μm which most available on the road surface were used in this experiment. Brake pad and disc surface characteristics were analyzed before and after squealing condition using Scanning Electron Microscope (SEM) and Energy dispersive X-ray analysis (EDX). The result shows that the silica sand particles had influence the squeal and surface behavior of the brake pad.
Dynamic Characterization of Car Door and Hood Panels Using FEA and EMA
Authors: Hanouf Zahir , Faris Waleed F. , Nor Mohd Jailani Mohd
Published: December 2013

The dynamic characterization of vehicle structures is a crucial step in NVH analysis and helps in refining the vibration and noise in new vehicles. This paper investigates the dynamic properties of two parts of the vehicle structure which are door and hood panels. Theoretical modal analysis which is referred to as Finite Element Analysis (FEA) and Experimental Modal Analysis (EMA) or modal testing has been used as investigative tools. The paper investigates the structural dynamic properties of door and hood panels of a local car. ME'scope software was used to analyze the data obtained from Pulse to extract the dynamic properties of the panels. LS-DYNA software was used to analyze the dynamic behavior of the structure. The comparison between the results obtained from both analyses showed some similarity in frequencies and mode shapes. Finally the paper concludes that experimental modal analysis and finite element analysis can both be used to extract dynamic properties of structures.
A Review of Sound and Vibration Research in Malaysia: Current Trend and Future Direction
Authors: Nor Mohd Jailani Mohd
Published: December 2013

The first Noise, Vibration and Comfort (NVC2005) conference started with a humble beginning comprising of thirty technical papers presented. This conference was initially designed to be held bi-annually and continued to grow in numbers with 54 papers presented in 2007 and 57 papers in 2010. At the moment there are 81 papers that have already been accepted for presentation in the NVC2012 conference. This paper presents an analysis of sound and vibration research activities carried out in Malaysia from the papers presented since 2005 till 2012. However the findings might not be comprehensive since only papers presented by Malaysian researchers in the NVC conferences are being considered. It is suffice in giving a glimpse on the progress and development of sound and vibration research theme in Malaysia as most of the key researchers in this field are actively sharing their research findings in these conferences. The trend and development of new research niches in sound and vibration in Malaysia is also reported in this paper. Finally, strategic initiatives to promote research excellence in this field to a greater height are also proposed. These initiatives are presented based on the authors involvement in developing and managing research policies at the national level. Research and development (R&D) eco-system in Malaysia is changing rapidly, subsequently creating a demand for our researchers in this fraternity to realign their efforts in order to promote collaborative and multi-institutional research projects that are relevant for Malaysia.
Recognition Patterns Construction of Coronary Heart Disease Patients with Qi Stagnation Syndrome Based on Decision Tree
Authors: Shi Qi , Li You Lin , Zhao Hui Hui , Chen Jian Xin , Wang Xin Qiu , Yan Yue , Han Yan Wu , Wang Wei
Published: December 2013

Coronary heart disease (CHD), called Thoracic Obstruction in TCM, is one of the most important types of heart disease for its high incidence and high mortality. The methods of syndrome studies in TCM can not be completely in accordance with that of modern medicine because of the complexity itself. In this paper, we decide to investigate the ability of Decision Tree to predict CHD patients with or without qi stagnation syndrome. Predictions with CHAID Decision Tree (one type of the Decision Trees), we obtained recognition patterns made up of seven biological parameters. The accuracy of this diagnosis pattern was 80.7%, the sensitivity and specificity could reach 72.1% and 83.0%. The ADTree recognition pattern include six biological indicators. The accuracy of this diagnosis pattern was 94.6%, the sensitivity and specificity could reach 100% and 94.3%.
Efficient Moving Target Tracking Algorithm: Design and Implementation of the Sand-Table Tracking Algorithm
Authors: Li Jia Qi
Published: December 2013

Working on the design of a new algorithm :sand_table algorithm.The algorithm could work well in recognizing and tracking an single moving target shot by camera or in a video .The algorithm works simple with low operation cost.May used in tracking different object of many kinds.The algorithm imitate the the process of falling sands to Greatly enhance the tracking ability and tracking accuracy.
Improvement and Application of Template Matching Algorithm
Authors: Gao Li , Hou Zhi Xin
Published: December 2013

To resolve large number of invalid algorithm in poker recognition with traditional template matching algorithm, a regional interlaced scanning sequential algorithm proposed to improve the template matching algorithm, which can reduce the recognition time greatly and improve recognition accuracy efficaciously .
A Variable Step Size LMS Based on Sparsity for System Identification
Authors: Chen X.Q. , Ju Hua , Fan Wei , Huang W.G. , Zhu Z.K.
Published: December 2013

In many practical applications, the impulse responses of the unknown system are sparse. However, the standard Least Mean Square (LMS) algorithm does not make full use of the sparsity, and the general sparse LMS algorithms increase steady-state error because of giving much large attraction to the small factor. In order to improve the performance of sparse system identification, we propose a new algorithm which introduces a variable step size method into the Reweighted Zero-Attracting LMS (RZALMS) algorithm. The improved algorithm, whose step size adjustment is controlled by the instantaneous error, is called Variable step size RZALMS (V-RZALMS). The variable step size leads to yielding smaller steady-state error on the premise of higher convergent speed. Moreover, the sparser the system is, the better the V-RZALMS performs. Three different experiments are implemented to validate the effectiveness of our new algorithm.
F Functional and the First Eigenvalue for Quasi-Einstein Metrics
Authors: Xing Qiao Fang , Gao Xiang
Published: December 2013

In this paper, we deal with the monotonicity properties of the first eigenvalue of the Laplacian operator. Firstly, by using the monotonicity formula of theFfunctional, we derive a monotonicity formula of the first eigenvalue of the Laplacian operator. Based on this, we also prove an exponential decreasing property of the first eigenvalue.
Deformation Monitoring Method Based on Photogrammetry Technology
Authors: Gou Zhi Yang , Zheng Qiong , Liu Chang Ru , Wu Ya Jun , Wang Meng , Zheng Ke
Published: December 2013

Photogrammetry technology is used in the automatic deformation monitoring of foundation pit firstly and method proposed to reflect the deformation with the differences of two direction of monitoring points in the image plane. The method combined with the basic principle of photogrammetry, unified the spot observation data under monitoring camera coordinate system to calculate, simple and quick. Experiment shows that, the accuracy in X direction (horizontal direction along the pit) is superior to sub-millimeter and Z direction (the vertical direction in the pit) could achieve sub-millimeter, which can completely meet the needs of the deformation monitoring.
A Robust Neonatal Facial Pain Cues Classification
Authors: Mansor Muhammad Naufal , Rejab Mohd Nazri
Published: December 2013

Late of infant pain detection on the early stage may affect newborns growth. Regarding of this matter, different techniques have been proposed such as facial expressions, speech production variation, and physiological signals to detect the pain states of a person. For past 2 decades, the determination of pain state through images has been undergone substantial research and development. Various techniques are used in the literature to classify pain states on the basis of images. In this paper, a feature extraction method using Principal Component Analysis (PCA) was adopted for identifying the pain states of an infant. In this study images samples are taken from Classification of Pain Expressions (COPE) database. Fuzzy k-NN, k Nearest Neighbor (k-NN), Feed Forward Neural network (FFNN) and Linear Discriminant analysis (LDA) based classifier is used to test usefulness of suggested features. Experimental result shows that the suggested methods can be used to identify the pain states of an infant.
Application of Middleware for Callcenter in the Housing Fund Management Center
Authors: Qi Chang Xing
Published: December 2013

This paper analyzes the feature of CallCenter,and designs a middleware to connet the callcenter to business system.According to the business characteristics of housing fund, an architecture model of the middleware is designed, and the function and process are described too, After the callcenter application is built, the operation data of the system are analyzed and further suggestions are given
The Improvement of the X-Service Management Information Platform for Cargo and Ship Agency Based on the Platform of Mobile Information
Authors: Liang Chen , Huang Jian She , Lin Zhen Xing
Published: December 2013

The main measure to enhance the core competitiveness of the agent company of cargo and ship is to improve the level of enterprise's information .The applications of mobile Collecting and processing technology is an important content of enterprise management information platform.This article mainly analyzed the current insufficient of the cargo agency management information platform,the mobile terminal and its application requirements.And it also analyzed the improvement of X-Service information platform by PENAVICOXM. At last,it analyzed and research the X - Service under the new framework of mobile information platform.
Study and Practice on the Management and Monitoring the Graduation-Designing Platform
Authors: Yang Dong Li , Fu Yu , Zhao Wan Ping
Published: December 2013

This paper studied the management and monitoring graduation-designing platform of the university undergraduate based on the internet technology. Practice has proved that the platform can let the students write graduation-designing journal of the electronic version at any place at any time; It can update their completion status of the graduation designing in real time; Teachers in the colleges and universities can land the platform and gave the answers to the students questions in time with a variety of ways. It truly achieved the new 4W comprehensively monitoring and management pattern that some "cage-free" serious professional students of the graduation designing, especially represented by the IT professional students.
Design and Analysis of Supervisory Platform of Campus Energy Saving
Authors: Chen Ming , Zhu Li Ping
Published: December 2013

In view of the current situation and problem existing in campus energy usage, corresponding water, electricity, and heat energy saving strategies and implementation schemes are proposed. Then, taking Minzu University of China as the object, the framework of the supervisory platform of campus energy saving is designed, which includes hardware facilities of the front end, communication transmission equipments and data center or energy saving management center. The main function units of the platform are described and analyzed. Compared to existing designing scheme of energy saving supervisory platform, which can only realize one-way sensing, monitoring, and management functions, the proposed designing scheme also has feedback control functions. It can adjust and control building energy supply according to energy consumption usage and truly achieve the purpose of energy saving.
A Software Defect Prediction Model during the Test Period
Authors: Han Wan Jiang , Jiang Li Xin , Zhang Xiao Yan , Sun Yi
Published: December 2013

Effective defect prediction is an important topic in software engineering. This paper studies multiple defect prediction models and proposes a defect prediction model during the test period for organic project. This model is based on the analysis of project defect data and refer to Rayleigh model. Defect prediction model plays an important role in the analysis of software quality, rationally allocating resources of software test, improving the efficiency of software test. This paper selected representative software defect data to apply this model, which has been shown to improve project performance.
Design and Implementation of College OA System Based on UML and J2EE
Authors: Wu Xiao Feng , Luo Sheng Tao
Published: December 2013

This paper mainly describes the process of design, modeling and implementation of college OA system. System design is based on the MVC design concept and uses the most advanced technology of UML and J2EE. And system architecture is achieved by STRUTS. Our implementation shows that this method simplifies the software development process and improves the flexibility, scalability and reusability of software.
Cloud-Based Teaching Resource Construction in Beijing Colleges and Universities
Authors: Cheng Cong
Published: December 2013

Beijing colleges and universities are capable of sharing teaching resources via network. However, most of them develop these resources for self-use and independently from each other. To solve this problem, the article discusses the cloud-based sharing modes of teaching resources, which integrates scattered quality resources for unified management by means of distributed storage systems and virtualization technology.
Semantic-Driven Information Recommendation System
Authors: Huang Zhen Hua , Fang Qiang
Published: December 2013

Information recommendation systems is the one of the most effective tools to solve the problem of information overload. In this paper, we design SIRSCA, a semantic-driven information recommendation system under cloud architecture. SIRSCA mainly includes four modules: semantics representation of foundation data and user preference informations; indexing mechanism of massive semantic informations under cloud architecture; recommendation approaches based on semantic computation theory; and technologies of dynamic migration under cloud architecture.
Application of Virtual Reality Technology in Teaching
Authors: Huang Guo Qing , Yang Tong Hua , Xu Sheng
Published: December 2013

Virtual reality (VR) is a computer-simulated environment that can simulate physical presence in places in the real world or imagined worlds. It is new comprehensive information technology which enables users to "access" to the computer-simulated environment through the use of standard input devices and realize the direct interaction between users and the simulated environment. With a case study by using the theory of visual reality technology, this thesis analysises the application types and application methods of visual reality technology as well as the existing problems and solutions during the application process of visual reality technology.
The Transformation of Teachers' Role and its Strategy Research in the Conditions of Modern Information Technology
Authors: Wu Can Long , Zhan Shu Ying , Zeng Chun Qing
Published: December 2013

With the rapid development of modern information technology, some high technologies (such as the multimedia technology, the communication technology, the network information technology and so on) have been widely applied to various fields of education. Not only has the impacts for ideas and concepts of the traditional education and changes the teaching content, means, methods and forms of organization, but it also brings an extensive and profound impact for the role of teachers. The intensive study and exploration of these issues and impacts and providing the corresponding countermeasures will undoubtedly provide the important idea and reference value for the school to achieve the modernization of education.
Effect of Temperature on GaN Films Deposited on Diamond Substrate Using an ECR-PEMOCVD
Authors: Liu Chang Qing , Qiu Peng , Gao Zhong Fei , Gan Bao Zhong
Published: December 2013

Highly-quality GaN films were deposited on diamond substrate using an electron cyclotron resonance plasma enhanced metal organic chemical vapor deposition system (ECR-PEMOCVD) at the proper temperature. The source of gallium is Trimethyl gallium (TMGa) and N2, and the influence of temperature on the properties of GaN films was investigated systematically by X-ray diffraction analysis (XRD), atomic force microscopy (AFM), room temperature photoluminescence (PL), respectively. The dense and uniformed GaN films with highly c-axis preferred orientation were successfully achieved on free-standing diamond substrates under optimized deposition temperature of 400 °C.
Kinetic and Thermodynamic Study Adsorbing Methylene Blue on Nanozirconia
Authors: Chen Ping Hua , Zhou Xue Zhen , Li Yong Xiu , Li Dong Ping , Li Jing , Liu Yan Zhu
Published: December 2013

In present study, uniformed nanozirconia is obtained via precipitation, ball milling and spray drying. The characteristics of methylene blue adsorption by nanozirconia are studied in details. The morphology of nanozirconia is examined by SEM. The influence of temperature is studied to obtain the optimal adsorption conditions. The equilibrium adsorption isotherms and the kinetic properties of the adsorption process are investigated to study the mechanism. The thermodynamic properties of methylene blue adsorption is investigated, and the thermodynamic parameters of Gθ, Hθand Sθare calculated. The results show nanozirconia has high adsorption ability of 43.99 mg/g to methylene blue, and the adsorption reaction is a spontaneous and physic-sorption process.
Study of Anti-Friction Performance of Spherical FeS Nanoparticle
Authors: Mei Bin , Ma Zi Jian
Published: December 2013

Using face-to-face mode, the antifriction performance of FeS nanoparticle was studied, which prepared by biotechnology as lubricant additive. The results showed that the size about 30-50nm FeS nanoparticle with amorphous state could effectively decrease the friction coefficient of base fluid and the value of friction coefficient reached minimum value when the FeS content was 1%. Moreover, the anti-friction mechanism of FeS nanoparticle was also discussed based on the SEM and EDS results.
An Easy Preparation of Hybrid SiO2@Poly Acrylic Acid Nanoparticles
Authors: Wang Hai Wang , Ding Xiu Juan , Sun Jie , Luan Jin Peng
Published: December 2013

Nanometer materials are widely used in the modification of polymer materials such as polypropylene because of its unique performance. nanocomposite material,which expended the application field of polymer ,is a kind of new composite materials with high performance ratio and widely application prospect .This paper adopted the surface-initiated technology to coat and modify the surface of nanosilica,which solved the problem of the agglomeration and interface compatibility of the nanometer particles and improved its dispersion in the acrylic acid,then prepared SiO2/PAA nanocomposite .The composite was characterized by infrared spectrum and transmission electron microscopy (TEM) ,etc.The research results showed that the nanocomposite prepared by in-situ polymerization technology had higher toughness ,strength and more excellent comprehensive performance.
A Spike-Like Ionic Current Behavior via Graphene Nanopore
Authors: Wu Gen Sheng , Sha Jing Jie , Liu Lei , Chen Yun Fei
Published: December 2013

Ionic current characterization is critical for the application of nanopores with sub 5 nm as bio medical sensors and devices. Here, we demonstrate an eccentric ionic current behavior in graphene nanopore fabricated by high resolution transmission electron microscopy (HR-TEM). A spike-like current enhancement is shown in the absence of any bio molecule or nanoparticle in the LaCl3and KCl solution. By tuning the hydrophobicity of the graphene surface, the spikes diminish in the current recordings acquired in graphene nanopore after 20 seconds plasma etching. We consider that the hydrophocity-induced nanobubble is present in the nanopore area, leading to the currents change as the bubbles deformation due to the voltage driven electrostatic forces on the transported ions surrounding the bubble surface.
Study on Join Fastness of Silent Chain
Authors: Dong Song , Liu Xiao Lun , Cao Yan , Shao Gui Yang , Jiang Dong Lin , Xu Jing
Published: December 2013

In order to improve the join fastness of silent chain, a new silent chain assembly method is proposed. It increases the capability that the silent chain stands against transverse vibration, reduces the meshing noise of silent chain without changing the space size of silent chain, by replacing the installing of outer link plate and pin as a press-fit configuration, and taking wire lock on the joint. The result of extrusion force comparative experiment showed that the extrusion force of outer link plate press-fit configuration was 2.5 times than gasket press-fit configuration. Through the platform contrast test, a noise test of two types of silent chain were made at the same speed, the result showed that the new silent chain drive more smoothly than the traditional one, the average noise level was decreased by 1.5dB. The two test results verified that the new silent chain assembly method is validity.
The Calculation Method of Lock-Up Clutch Friction Work
Authors: Duan Jian Rui , Yao Jin , Li Hua
Published: December 2013

In order to calculate the friction work of lock-up clutch, which come from the lock-up process of hydraulic torque converter, this article established a simplified dynamic model of the engine and hydraulic torque converter , according to the route of power transmission and the rule of moment balance. And then the mathematical model of the lock-up process was deduced. This article reached a calculation method of lock-up clutch friction work by the mathematical model , and did some further simplified. Meanwhile, the lock-up process was simulated by Matlab/Simulink. By analyzing the simulatin resultthe computed result of machinery bookthe computed result of the improved method, the correctness of the improved method was verified.
Experimental Study on High-Pressure Fog Cooling Systems in Greenhouses
Authors: Zhao De Ling
Published: December 2013

This paper describes the study of High-Pressure Fogging Cooling Systems. A new ruby-orifice nozzle is designed because of the inefficiency of the stainless steel-orifice nozzle which wear out easily and expensive in service at present. The characteristic of the new nozzle is analyzed and the fog droplet size of the new nozzle is measured by MPA Malvern Particle Analyzer. The diameter of droplet size (VMD ) which is 500 mm far from the nozzle is less than 30μm when the water pressure in the pipe is more than 5 MPa. In addition, a high-pressure fog cooling system is designed and is conducted in a greenhouse of 6 by 30 meter. The study shows: the high-pressure fog cooling system is efficient on some conditions of requiring a certain wind velocity and a certain humidity outside in open greenhouses.
Modeling and Co-Simulation for All-Hydraulic Multi-Axel Steering System
Authors: Li Zhuo Qing , Tang Lan , Liu Rui
Published: December 2013

This paper discovers the linear single trace model with 2-DOF for three-axel steering vehicle. The mechanical and hydraulic function model are set up in AMESim while the mathematic and electronic control unit model were established in Matlab/Simulink. In order to take the advantage of each software and make its use to the fullest, interface blocks of AMESim were introduced to link models of these two different platforms. Results from this co-simulation can be applied to judge whether the system has reached the requirement of steering experience or not.
Research on Heat Sink for LED Stage Lighting Lamp
Authors: Ren Hui , Zhou Yi Chen , Yang Li Fei , Gao Tian
Published: December 2013

Most of the LED Stage Lighting lamps use LED arrays or LED chips, while gathered chips require faster heat dissipation. If LED temperature gets too high, it will inevitably lead to its optical, electrical and color performance change, and will seriously affect LED working performance and its life. This paper mainly discussed LED Stage Lighting lamp heat dissipation, using the finite element method to analyze the LED temperature field. Then we used ANSYS Workbench to simulate the field and optimize its dissipating performance, and finally designed a LED radiator. Results showed that after the optimization, it had solved the heat accumulation problem of LED lamp, reduced the center temperature of LED effectively, keeping LED work in a proper temperature range.