bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Characteristic Parameters of Speech Anti-Deliberate Imitation System
Authors: Zhou Ping , Ke Jing Jing , Jing Xin Xing , Cui Zhao Guo
Published: December 2013

Deliberate imitation which is the reproduction of another speakers voice and speech behavior can pose a threat to the security of the voice authentication system. Therefore effective characteristic parameters are the key to the anti-deliberate imitation. The study chose speech database of anti-deliberate imitation and investigated some common feature parameters separating capacity and descriptive power against voice deliberate imitation. The study compared the ranking of subjective evaluation and feature parameters Euclidean distance of imitators. The comparison results indicate that Mel frequency cepstrum coefficient (MFCC) combined with its differential cepstrum parameters (WMFCC) have the best performance for anti-deliberate imitation. And the results were validated by the experiment based on VQ speaker verification system.
Simulation of Registration Accuracy of Iterative Closest Point (ICP) Method for Pose Estimation
Authors: Wang Fei
Published: December 2013

ICP method is a powerful tool widely used in 3D point registration and pose estimation application. But there lacks an deterministic relation between the 3D point dataset and the model. Here we present some Monte Carlo simulation results for pose estimation error of one degree and the system requirement for lidar 3D point measurement techniques.
Design and Fabrication of a Three-Axis Force Sensor for Underwater Robot Fingers and a Method for Decreasing Error
Authors: Luo Ming Hua , Yao Qing Mei , Pan Chun Wei , Liu Xin Jian
Published: December 2013

In this paper, we present a new mathematical model of three-axis force sensor for underwater robot fingers. We designed a kind of sensor based on this model which has a simple structure and can be miniaturized easily. By this model, they can be calculated that the magnitude, direction of finger force. Moreover, we present a new compensating method to decrease the error caused with the variation of temperature and pressure of water and caused with bending of the beams by symmetrical electronic circuits. We proposed compensation block method to solve the problem of heavy lead wire which affecting finger moving in underwater. Finally, an experiment is performed to verify the proposed model.
A New Multisensor Information Fusion Model Using Dempster-Shafer Theory
Authors: Li Jian , Wang Ying , Mao Zhi Jie
Published: December 2013

The aim of this paper is to investigate how to use the contextual knowledge in order to improve the fusion process. The concept of multisensor information fusion model based on the Dempster-Shafer Theory is introduced. The resulting information of the architecture is combined using similar sensor subset and dissimilar sensor subset. We demonstrate the effectiveness of this approach using the uncertain and disparate information compared to primary mass assignment techniques.
Node Positioning Model for UWB Wireless Sensor Networks
Authors: Yu Gen Jian , Tu Wei Lin
Published: December 2013

A node positioning model of UWB wireless sensor networks is proposed, and positioning error of the model is investigated through simulation. High accuracy of positioning is achieved if all four reference nodes have LOS(Line of Sight) information path, however, even if one reference node does not have a LOS information path, the positioning error will no less than 5 m when the SNR(Signal to Noise Rate) lower than 30 dB, so the SNR or reference node should be increased to assure the positioning accuracy.
Research on Compressed Sensing Matrix Based on Data Compressing of Insulator Leakage Current
Authors: Zhai Xue Ming , You Xiao Bo , Li Ruo Chen , Zhai Yu Jia , Wang De Wen
Published: December 2013

Insulator fault may lead to the accident of power network,thus the on-line monitoring of insulator is very significant. Low rates wireless network is used for data transmission of leakage current. Making data compression and reconstruction of leakage current with the compressed sensing theory can achieve pretty good results. Determination of measurement matrix is the significant step for realizing the compressed sensing theory. This paper compares multiple measurement matrix of their effect via experiments, putting forward to make data compression and reconstruction of leakage current using Toeplitz matrix, circulant matrix and sparse matrix as measurement matrix, of which the reconstitution effect is almost the same as classical measurement matrix and depletes computational complexity and workload.
Development of a Sensor Module for Monitoring Indoor Environments
Authors: Mori Fumihide , Koh Keishin , Misu Takayuki
Published: December 2013

We developed a sensor module by using various commercial sensors and a wireless communicating module. The sensor module can be used to monitor an indoor environment via its temperature sensor, humidity sensor, light sensor, odor sensor and atmospheric pressure sensor. We also designed a user interface for a tablet PC. While communicating with the sensor module wirelessly, the data of an indoor environment were collected in real time. Using the environmental data, we calculated the Wet Bulb Globe Temperature (WBGT) and the discomfort index (DI) to determine the threshold values of an indoor environment for preventing heat illness and to obtain information on environmental quality.
Application of the Kalman Filter in the Sonar Altimeter of the Underwater Glider
Authors: Shi Bao Hua , Fang Wei , Liu Huan , Wei Cai Cai
Published: December 2013

Based on the standard Kalman filter, considering the actual problems of the sonar altimeter is susceptible to the environment and its accuracy is poor, put forward a kind of adaptive algorithm based on n iterations to adjust observation noise. By adjusting the observation noise covariance, to make it more close to the actual value, so as to improve the accuracy of the altimeter data. Experiment show that the algorithm is effective.
A New Energy Conservation Scheme for Sensor Network for Particulate Matter (PM)
Authors: Luo Heng , Chen Jian Ping , Guo Ai Huang , Laurenson David , Pei De Yang , Jiang Hua
Published: December 2013

Energy management is critically important for sensor networks for the PM pollutant due to the requirements of long-term observations for the sake of accuracy. In this paper, an energy saving scheme, basing on the temporal distribution characteristics of PM pollutants, is proposed. The reliability as well as efficiency of the proposed scheme is validated by experiments and theoretical analysis.
The Application Research Progress of Wireless Sensor Networks
Authors: Ma De Xin , Ma Jian , Xu Peng Min , Pang Ying
Published: December 2013

Based on the summary of Wireless Sensor Networks' characteristics, we analyze the Wireless Sensor Networks' applications and its development trends, and put forward the factors that restrict the development of Wireless Sensor Networks. In this paper, we analyze the Wireless Sensor Networks development opportunities and challenges in the future, and provide some new ideas and enlightenment for the comprehensive development and widely used.
Quality Evaluation of Dairy Products Based on Electronic Nose
Authors: Ma Xiu Ying , Liu Yun Xiang , Yu Wan Jun
Published: December 2013

The construction of Electronic Nose system and associated signal processing methods were introduced .Then special references to applications to dairy products, such as the classification of different milk, the milk with different shelf-lives, flavor quality evaluation, antibiotics resedues detection and quality control were discussed. The results show that the quality of dairy products can be evaluated effectively using Electronic Nose system. The development trends of Electronic Nose are presented.
Study on the Working Fluid Conductivity Measuring Technology of MSWEDM
Authors: Guo Cui Xia , Liu Kang , Xie Wen Ling , Zhou Shun Yong
Published: December 2013

It analyzes measuring method of working fluid conductivity on the MSWEDM through the study of the working groove equivalent circuit model and the main factors affecting the conductivity measurement. It adopts ± 18V, 50Hz AC voltage to driving the measuring electrode in order to reduce the error caused by the electric spark machining the leakage current and polarization effect; the measurement system adopts with waterproof DJS-1CF (platinum black) conductance electrode in order to reduce the error caused by the capacitance effect. It study on the working fluid conductivity measuring technology that may help lay a foundation for it can real-time, on-line control research about the working fluid conductivity.
On-Line Oil Condition Monitoring System
Authors: Liang Xin Yuan
Published: December 2013

An on-line monitoring system was proposed to monitor lubrication oil real-time condition. Oil is the machine equipment blood, and its condition has very serious influence on machine running. Firstly, this paper expiated the research significance of on-line oil monitoring. Then the key problem of on-line oil monitoring was discussed and its goal was analyzed. Furthermore, basic research content and research thread were put forward. Based on the modern photoelectric detection, microscopic imaging and computer image processing technology, an on-line acquisition system of lubricating oil particle image was proposed. This work provides a new research idea for on-line monitoring system which is important to develop the technology of oil condition monitoring.
Study on Vehicle Scheduling Problem Based on Improved Particle Swarm Optimization
Authors: Wang Fei
Published: December 2013

Vehicle scheduling problem (VSP); particle swarm optimization (PSO); population entropy
Research and Implementation of Muck Truck Regulatory System
Authors: Zhou Li
Published: December 2013

To solve site muck truck regulation difficulty, a muck truck monitoring system is designed and implemented based on 3G networks and the Internet of Things. The system consisted of Hi3515 processors embedded intelligence analyzer, RFID, grating and camera. With the data send from the construction site, a B/S remote regulatory website is built to provide real-time monitoring, evidence preservation, data analysis and data summary.
Design of Anti-Theft Public Bicycle System Based on RFID Technology
Authors: Wu Yin Min , Chen Yun Zhi
Published: December 2013

This paper introduces an anti-theft detection system for public bicycles, which can work in ways of both passive RFID and active RFID. The overall systematic framework is analyzed, and the circuits for microcontroller for RFID and RF front-end in the system are focused on. The anti-theft software process in the project implementation is also presented. We have done the design of RFID, including the software and hardware. After debugging, the RFID operates well. The RFID had done well in reducing traffic pressure in Hangzhou, Jiangyin and the other cities.
The Design of TPMS Hand-Held Diagnostic Instrument
Authors: Hou Dong Dong , Hu Dai Rong , Guo Kun
Published: December 2013

TPMS hand-held diagnostic instrument to achieve the state of reading and configuration of the emitter via a wireless command, without removing the emitter from the automobile tires can complete the function of diagnostic and configuration. This paper firstly introduces the working principle of the system, and then the design of the hand-held diagnostic instrument hardware structure and software workflow is given.
The Secure Communication Scheme of DSRC Based on Watermark and VPN
Authors: Shu Ming Lei , Liu Yun Xiang , Yu Wan Jun , Fang Hua
Published: December 2013

Vehicular environment with the fast varying and fast moving character calls for the support of security communication technologies. The solutions based on watermark and VPN (Virtual Private Network) are discussed to realize security communication of DSRC (Dedicated Short Range Communication), which is earmarked for motor vehicles to exchange information with each other in the area of ITS (Intelligent Transport System).Finally this paper analyses the characteristics of the solutions.
Measurement of Acoustic Noise Induced Linewidth Broadening of Unpackaged Distributed Feedback Fiber Laser
Authors: Guo Jian , Ni Jia Sheng , Qi Hai Feng , Song Zhi Qiang , Peng Gang Ding
Published: December 2013

The acoustic noise induced linewidth broadening phenomenon of distributed feedback fiber laser (DFB FL) is experimentally studied in this paper. Using the delayed self-homodyne method, we performed linewidth measurements on one unpackaged short cavity asymmetrical DFB FLs under increasing acoustic noise influence. The experiment results show the linewidth of tested laser increased from 5.8 KHz at 50 dB sound level to 32.5KHz at 80 dB sound level. This proves acoustic noise can drastically change the linewidth performance of unpackaged DFB FL. In addition, we performed another experiment on the same DFB FL to measure its linewidth with increasing tensile loads at fiber ends; the result shows a linewidth increase from 5.8 KHz at 0g tensile force to 51.2 KHz at 50g tensile force.
The Wireless Programmer Based on the NRF9E5
Authors: Li Guo Yu
Published: December 2013

The wireless programmer based on the NRF9E5 chip is proposed, designed and applied. The circuit board doesnt connect to the computer with any cable, and it connects to the computer through the wireless transmission of the NRF9E5. The circuit board can realize to update the program online through the exquisite programmer. The programmer can download the program for 5.97 seconds and it is widely applied to the product development and quantity production area.
A Data Transmission Strategy Proposed for Subsea Surveillance
Authors: Xie Wei Hao , Zhou Bin , Sun Xiao Ling , Xu Guang , Yang Lei
Published: December 2013

As a promising way to the certain area surveillance, the application of wireless sensor network on the unknown subsea observation is becoming more significant. After placing the sensor nodes, each sensor node will generate a common communication frame and choose the next hop neighbor node randomly, which could results in redundant energy consumption. In this paper, a data transmission strategy is proposed including routing scheme, frame format and the corresponding topology structure. By considering the transmitting distance, energy consumption and transmission probability, the introduced strategy can reduce the redundant energy consumption, balance the network payload and prolong the subsea observation network lifetime. The simulation results show that the strategy is more efficient than the common one.
Service-Oriented QoS Guarantee Based on Access Category Traffic
Authors: Zhang Wei , Chu Li Li , Wang Peng , Yuan Ren Gang
Published: December 2013

Due to the further development in recent years, VoWLAN(VoIP over Wireless LAN) will achieve convergence with other service inevitably and has a higher requirement for network performance. Service focused on the whole converged network is different, so the measure of network status has different demands, we should set parameters reasonably and make it adaptive network in order to realize the optimization of network performance according to the current channel load level and distribution of service condition. Therefore, we can adjust the Contention Window(CW) dynamically, according to the slot utilization rate to estimate the channel load and the concept of backoff discontinuation rate. Simulation results prove that this scheme is simple and effective, largely improved QoS performance of the throughput and delay of each service.
Design of Remote Reservoir Water Level Monitoring System Based on GPRS
Authors: Xu Hong , Zhang Yong Jun
Published: December 2013

in order to understand the situation of design flood level, a water level monitoring system based on ARM7. The ARM7 high performance microprocessor LPC2132 as the core, uses the high precision AD converter TLC2543 data collection, combined with the system software and hardware design of GPRS transmission network, including the water level sensor data acquisition, remote transmission of GPRS messages, human-computer interaction module C/OS-II operating system with multiple components, the system design, to achieve the level of information the remote communication by using short message. The experimental results show that: the system to collect data of high precision, stable and reliable transmission, effectively realizes the real-time monitoring of water level data.
Development of System SMPSL for Analog Communication
Authors: Nemec Radek , Hubalovsky Stepan
Published: December 2013

The paper describes development of System SMPSL for analog communication. The system consists of hardware and software parts. The system is used for measurement of analog quantities using a computer. Communication is via libraries. System is very cheap to assemble the hardware. Available software is free. The paper describes the basic connections and the source code for creating an analog input and output.
A Model of Classification for E-Nose Based on Genetic Algorithm
Authors: Jiang Min Jun , Liu Yun Xiang , Yang Jing Xin , Yu Wan Jun
Published: December 2013

Electronic nose is an intelligent sensory analyzing instrument which simulates the biological olfaction system. Classification is very important for an electronic nose which is usually seen as the software of E-nose. In this paper, we present a model of classification based on genetic algorithm. Compared with common classification algorithms, genetic algorithm had more powerful flexibility and global searching capability. In this paper classification rules were represented in the form of chromosome by binary codes which are in accordance with the features of sensor data. F-measure was used as fitness evaluation. We also designed efficient crossover, mutation operators.
Recursive Least Squares Algorithm for Nonlinear Systems with Piece-Wise Linearities
Authors: Yuan Hui Juan
Published: December 2013

This paper proposes a recursive least squares algorithm for nonlinear systemswith piece-wise linearities. By using a switching function, themodel of the nonlinear systems be changed to anidentification model, then based on the derived model, a recursive least squares algorithm is provided to estimate all theunknown parameters of the systems. An example is provided to showthe effectiveness of the proposed algorithm.
An Improved Algorithm of Bearing-Only Localization and Optimal Position Performance of Multistaic Sonar
Authors: Sun Yong , Zhao Jun Wei
Published: December 2013

To improve the localization accuracy of bistatic sonar in such districts as baseline district, and side districts of transmitting and receiving stations, the most effective method is to increase the number of transmitting and receiving stations, which forms a multistatic sonar system. The mature algorithm of multistatic sonar system which contains three measurements in one subset, calls the multistatic bearing-only localization (BOL) algorithm. This paper proposes a new algorithm of improving the bearing-only localization algorithm. The simulation results show that the proposed localization algorithm exhibits higher accuracy compared with the BOL algorithm and provides less time than it.
An Adaptive Moving Objects Detection Algorithm Based on Kernel Density Estimation
Authors: Hua Man , Li Yan Ling , Lin Rui Chun
Published: December 2013

The detection of moving objects are important research area for video surveillance and other video processing applications. In this paper, we propose an adaptive approach modeling background and segmenting moving object with non-parametric kernel density estimation. Unlike previous approaches to object detection which detect objects by global threshold, we use a local threshold to reflect temporal persistence. With combined of global threshold and local thresholds, the proposed approach can handle scenes containing gradual illumination variations and noise and has no bootstrapping limitations. Experimental results on different types of videos demonstrate the utility and performance of the proposed approach.
Study of Novel Percussion Medical Signal Measurement Mode
Authors: Yi Jun , Cao Dong , Xiao HE , Zhang Xin Long
Published: December 2013

This paper presents one percussion sound signal collection system model. The percussion sound signal collection device was designed. The sound collector was introduced in detail. Through analyzing four kinds of different percussion sound, the accuracy of this model is verified. The results showed that this collection model and percussion sounds signal processing method can be accurate and effective. The experimental results are consistent with the theoretical value. This research provides one modern applications for the percussion in a new way.
An Optimization Algorithm of Inrush Currents Inhibition of Closing Time
Authors: Wuyun Gao Wa
Published: December 2013

To meet the complex electromagnetic environmental conditions of power transformer on-site, an optimization algorithm of the closing time based on fuzzy reasoning is proposed. It can not only improve the robustness and stability of inrush currents inhibition of algorithm, but also can be a theoretical basis for the research of transformer inrush current restraining method.
Seismic Evaluation of Base Isolated System Equipped with Shape Memory Alloys
Authors: Alvandi S. , Ghassemieh M.
Published: December 2013

Seismic isolation system is an example of passive control system that effectively improves the performance of structures. This research discusses the seismic performance of a elastomeric base isolation system which provide the combined features of vertical load support, horizontal flexibility and energy absorbing capacity, utilizing shape memory alloys that provides re-centering force and additional damping in the system. Also this paper compares the effect of such alloys with memory effect and/or superelasticity (with pre-straining) in base isolated structure. To provide such comparison, a nonlinear structural model has been developed on some benchmark control problems and some health monitoring evaluation criterias are used. The smart base isolation utilizes the different responses of shape memory alloys at several levels of strain to control the displacements of the rubber bearing and base shear at excitation level. Furthermore the proposed based isolation systems has enhanced performance in terms of response reduction and re-centering capacity.
Comparison of Wind Pressure Coefficients with Wind Load Provisions
Authors: Lee Jong Won , Kong Yun Bae , Shin Sung Woo
Published: December 2013

This study has compared the equivalent external pressure coefficients, (GCpf)eq, with 6 wind load provisions and wind tunnel test data. The wind load provisions are the ASCE 7-10, NBCC 2010, AS/NZS 2011, EN 2005, AIJ 2004 and KBC 2009. Experiment data on low-rise building have been obtained at the University of Western Ontario (UWO) to contribute to the NIST aerodynamic database [. For the experiment, a model with 1:12 of roof slope and 4.9 and 12.2m of eave height was used under open terrain conditions (See also Ref. [). (GCpf)eq was re-normalized based on the external pressure coefficients, GCpf, of ASCE 7-10. When compared to (GCpf)eq of the experiment data with 4.9m of eave height, consequently, ASCE 7-10 (81%), NBCC 2010 (84%), AS/NZS 2011 (70%), AIJ 2004 (68%) and KBC 2009 (53%) were all underestimated. Among them, KBC 2009 reveals the lowest value. On the contrary, EN2005 was overestimated with 122%. When the eave height was 12.2m, in addition, the same pattern was observed in most codes. EN2005 was slightly overestimated with 115%.
Seismic Analysis of Concrete Conical Foundation for 5 MWWind Turbine
Authors: Kim Woo Seok , Jeoung Chan , Lee Kang Min , Lee Jae Ha
Published: December 2013

Recently offshore wind turbines have been constructed and planned in Korea. However, seismic stability was not extensively examined, although relatively small earthquakes frequently occur and the occurrence trend is increasing. This study intends to analyze the seismic stability of a wind turbine foundation based on KPMDC, KBDC, and DNV OS. The foundation considered has a conical concrete base under a steel shaft supporting the 5 MW wind turbine. This study performed 3D response spectrum analysis to consider turbine weight and self-weights. Analysis resultsbased on KPMDC indicatedthat very severetensile stresses in the concrete foundation near the neck bracket and pile-concrete foundation connection, which may require reinforcing.
Influence of Blast Furnace Slag as Coarse Aggregate on Various Grades of Self Compacting Concrete
Authors: Krishnasami R. , Malathy R.
Published: December 2013

Self-compacting concrete (SCC) is a highly workable concrete that can flow through densely reinforced complex structural elements under its own weight and adequately fill all voids without vibration or mechanical consolidation. Effective use of industrial waste products in concrete gains many economic, environmental, and social benefits rather than disposing of it as waste. The objective of this study is to investigate the effect of blast furnace slag as a partial replacement for coarse aggregate in M20, M30 and M40 grades of fly ash blended self-compacting concrete. The coarse aggregate was replaced at a range of 30% by blast furnace slag aggregate and the various fresh and hardened concrete properties were determined and compared. From the results, it is recommended that 30% of slag aggregate can be effectively utilized for various self-compacting concrete applications.
Analysis of Chinese City Endowment Facilities Research and Problems
Authors: Yu Ge , Liu Ying , Zheng Sai Wei
Published: December 2013

Article by investigations on the representative city endowment facilities of the main regions of China, Chinese urban pension facility size, nature and the facilities of the main problems, and analyze and summarize in view of the present situation and problems, so that to improve and solve them in the design.
Chloride Resistance of Concrete with Marine Blended Cement Using Corrosion Resistant Mineral Admixture
Authors: Bae Jun Yong , Shin Kyung Joon , Hyun Jung Hwan , Jang Young Il , Kim Yun Yong
Published: December 2013

In this study, the chloride resistant properties of concrete with MBC (marine blended cement) were evaluated by an accelerated corrosion test of reinforced concrete. The half-cell potential measurements indicated that the chloride resistance of MBC concrete is approximately 32% larger than that of TBC (ternary blended cement) concrete. As for the reinforcement corrosion area, while the TBC specimens exhibited 5.32-6.11% corrosion at the final 40th cycle, the MBC specimens did not show any sign of steel corrosion. The chloride penetration depth of the MBC specimens was approximately 41-79% smaller than that of the MBC specimens.
Study on Residential Quarters' Water Supply and Drainage Design of Expressway Service Area
Authors: Zou Jun Jun , Hu Qiong
Published: December 2013

The paper introduces Engineering characteristics of the expressway service area, summarizes the basic situations of the design of service area residential quarters water supply, landscaping, fire, rainwater and drainage system, discusses the pipe materials selection, pipe connection, pipe arrangements and laying and construction precautions in the process of the design of service area residential quarters water supply and drainage engineering, etc; in order to provide a reference for similar engineering.
The Motivation and Restriction Mechanisms of Emission Trading in the Tai Lake Basin
Authors: Qiu Lei , Zhao Shuang , Wang Hui Min
Published: December 2013

This paper offers a Government-Enterprise-Public cooperation mode of emission trading in the Tai Lake Basin based on the governing theory of the common pool resources. Then, the motivation and restriction mechanisms have been designed, that is, a water environmental regulation contract with the effect of incentive and constraint penalty is signed between the water environmental management institute and the enterprises. Further, a principal-agent model is developed, by which a set of results of the water environment regulation optimal contract is obtained. The effects of public participation and local government protection probability on the contract are analyzed. The results show that the increase of public participation could decrease the optimal fine amount, which will weaken the contradictions between the local government and the enterprises, and the decrease of the local government protection probability would reduce the regulatory frequency, correspondingly the supervision cost will be low.
Failure of Geotextile-Reinforced Walls in Centrifuge Model Tests
Authors: Costa Carina  Maia Lins , Zornberg J.G. , Costa Yuri Daniel Jatoba
Published: December 2013

This paper presents the results of centrifuge tests performed to investigate the behavior of geotextile-reinforced soil walls beyond stress conditions. The models were built using nonwoven fabrics as reinforcement layers and dry sand as backfill. Digital image analysis techniques were used to determine the displacement of sand markers placed along the reinforcements. The models were loaded until failure by increasing centrifugal acceleration, and the movements of the sand markers were used to determine the strain distributions along the reinforcement layers. The results revealed that stresses redistribute among reinforcement layers as models approach failure. Current design methods for GRS walls were found to be conservative when applied to predict the behavior of the reduced-scale models.
Development of a Homogeneous Model Municipal Solid Waste
Authors: Peng Ren , Hou Yu Jing , Zhang Xue Dong , Sun Qing Lei
Published: December 2013

A model waste mixing with kaolin, sand, and peat was developed. The physical properties of the waste were compared with the real municipal solid waste (MSW). The influence of unit weight on compression factor, shear strength, and saturated hydraulic conductivity was acquired. In addition, the homogeneous of the soil model was detected using the IWHR 450g-ton centrifuge and the newly developed centrifuge-robot.
Identification of the Dynamic Load Supplied on Top Pier of High Speed Railway Bridge
Authors: Li Ya Ping , Yang Meng
Published: December 2013

With the development of railway transportation, the traffic load increased continuously and it had the adverse effect on the system of pier-foundation. The quantitative analysis of the load supplied on the top pier is necessary for analyzing the dynamic response of pier-foundation system. Based on the theory of vibration inverse analysis and finite element method, the paper identified the dynamical load supplied on the top pier in vertical and the transverse direction. Combined with the vibration and acceleration history measured by the field test in Xiaolinhe Bridge, the vertical and transverse direction vibration-load history curves were calculated when the train speeds were 153 km/h and 206 km/h respectively. The results indicated that the amplitude of dynamic load increased with the higher speed of train.
The Effects of Expansive Additive on Rapid Hardening Cement Grout for Semi-Rigid Pavement
Authors: Lee Byung Jae , Bang Jin Wook , Jang Young Il , Kim Seong Su , Kim Yun Yong
Published: December 2013

Semi-rigid pavement, which mitigates the drawbacks of cement concrete and asphalt concrete pavements, is being widely used, but the body of research on enhancing the performance of cement grout remains limited. This paper discusses basic research on the development of a rapid hardening cement grout for semi-rigid pavement that meets chloride resistance, rheological property, and strength requirements. Evaluation results indicate that with up to 10% addition of expansive additive, in terms of the weight fraction of cement particles, the rheological property and strength requirements were satisfied. Examination of the chlorine ion penetration resistance revealed that an increase of expansive additive content yielded lower numbers of charged chlorine ions, resulting in 75.5 times higher resistance over a plain mix designed without expansive additive. In contrast, it was found that excessive addition of expansive additive, that is, beyond 10% in terms of the weight fraction of cement particles, was detrimental to achieving the desired rheological property.
Study Asphalt Mixture Damage Characteristics Based on X-CT Technology
Authors: Wu Zhi Yong , Zhang Xiao Ning , You Hong , Wan Cheng
Published: December 2013

In order to research the development of the internal cracks and the evolution of damage in asphalt mixture under loads, German Compact-225 type industrial X-ray computerized tomography (X-CT) was used to scan the specimen of asphalt mixture and the visualization of the internal damage process could be achieved, the damage under loads in various stages could be described accurately. Then, the damage evolution process was analyzed by calculating CT numbers, and a curvilinear relationship between the damage variable and the strain-stress was established. The results indicate that X-CT technology can be used as an effective way to detect and analyze the meso-damage of the asphalt mixture and that it further provides an important basis for quantitatively describing the evolution rule of the meso-damage.
Multimodal Transportation Issues in Istanbul: A Case Study for Traffic Redistribution due to Long Span Bridge Rehabilitation
Authors: Ilicali Mustafa , Catbas Necati , Kiziltas Mehmet , Ongel Aybike
Published: December 2013

In this paper, the use of multimodal transportation systems for Istanbul was reviewed. It was seen that there is a high imbalance towards the use of highway transportation. Especially, the marine and the railroad lines are underutilized and have not developed properly over the years. Due to extensive use of highway transportation, inter-and intra-city traffic experiences extensive congestions, delays, time and monetary losses. One of the bottlenecks of this congestion is at the Bosphorus Straight where there are two long span bridges. Recently, one of the bridges on the strait, Fatih Sultan Mehmet (FSM) Bridge, has undergone rehabilitation, thus offering reduced traffic capacity. This reduced capacity is taken partially by the other long span bridge (Bogazici Bridge) and partially by the marine transportation lines. In this paper, the traffic flow data before and after the FSM Bridge maintenance are presented along with the marine line data, especially for the redistribution of the traffic during the rehabilitation work at the FSM Bridge. It was concluded that with a well-developed and designed strategy, the marine lines can provide a more balanced modal distribution and more efficient transportation for the city of Istanbul.
The Power Vehicle with Lateral Collecting Function - Right Direction of Electric Vehicles and Electrified Highway
Authors: Zhang Yao Ping , Liu Ben Lin
Published: December 2013

Electrified highway will continuously provide the grid electricity energy directly to power vehicles, also can recharge electricity to the batteries loaded on the running vehicles without stop. Power supplying system of the electrified highway could be laid overhead, sides or ground of the highway. Among the three layouts, the lateral collecting mode where the power supplying system is installed along with the highway buffer zone or fence is better than other two modes. In lateral mode various vehicles with different height could get electricity from the grid directly by the lateral collector extended from one side of the vehicle. The power vehicles with function to gather power from the power grid will lead the electric vehicle industry onto a correct way, and the lateral collecting mode is the prospective and representatives the right direction of power vehicles and electrified highway.
Enhancing Interoperability of Construction Data for Managing Integrated Active BIM Features
Authors: Kim Hyeon Seung , Cho Bit Na , Moon Hyoun Seok , Ju Ki Beom , Kang Leen Seok
Published: December 2013

Recently, the visualization technique of numerical construction data has become essential in construction industry due to the extended application of BIM (Building Information Modeling) and various IT technologies. To build and apply a BIM tool, the interoperability between different modeling systems is being an important item. Specially, in the field of civil engineering project, the development of IFC (Industrial Foundation Class) code for 3D CAD object is under the conceptual phase. This study introduces cases of developing active BIM functions and IFC code that applicable to road project and proposes how to enhance data inter-operability to utilize the functions in an integrated manner.
Effects of Interactive Technology on Home-Based Rehabilitation for Chronic Stroke Patient
Authors: Lin Chien Yu , Hsien Shu Ling
Published: December 2013

This study aimed to apply low-cost interactive technology to home-based rehabilitation training for patients suffering from chronic stroke. It also focuses on discussing the results of the integration of interactive computer game training with home-based rehabilitation training in helping these patients. We conducted an experiment following the reversal design of single-subject research, in which a patient suffering with chronic stroke was given home-based rehabilitation training. In addition to interactive computer technology, the experiment also involved the adoption of a low-cost Wii Remote controller as an infrared receiver and a homemade infrared emitter supplemented by computer animation software to investigate the outcome of a home-based rehabilitation program. Data analysis is based on collection of points by the participant throughout the experiment and adopting visual analysis to discuss the outcome of interactive technology integrated with home-based rehabilitation. The results of this research show that the subject was able to stand on one leg for a few seconds longer than prior to the adoption of interactive technology integrated with home-based rehabilitation. Furthermore, parents of this patient and the therapists involved believe that the research and this innovative approach improved the patients performance in rehabilitation. The subject not only showed better motivation with regard to rehabilitation but also greater independence and enhanced capability of integrating into society.
Optimization of Interpolation Algorithm in Survey Calculation
Authors: Yan Tie , Li Ji Jun , Gao Xing Bao , Sun Xiao Feng , Shao Shuai
Published: December 2013

The interpolation algorithm in survey calculation is widely used in petroleum engineering, and it is different from the general mathematical interpolation. Along with the development of oil exploitation, various special type of well begin to appear, but the original interpolation method can not meet the needs of the field work. So the paper according to classical interpolation model of the interpolation algorithm, the three optimization intercalation models the curvature radius of curvature, minimum curvature, and natural curve were figured out. Theory analysis and results show that optimized interpolation formula the paper established can meet all kinds of optimization calculation of the inclined interpolation needs.
Numerical Simulation and Analysis of Critical Velocity in Tunnel Fires Based on FDS
Authors: Xu Shu Hui , Cui Ling Fei , Ning Lei , Wang Zi Ye
Published: December 2013

Critical velocity is a very important parameter in smoke control of tunnel fires and the variation of critical velocity against fire heat release rate is also one of the most important issues in tunnel fire researches. In this paper, a simplified physical model of a tunnel was established and the predictions of critical velocity for fire sizes in the 5-100MW range were carried out by FDS simulations. The FDS-predicted dimensionless critical velocities were compared with the values calculated by Wu and Bakar’s model. The result indicated that when the heat release rate was relatively small, Q≤30MW, the critical velocity increased with the increasing of heat release rate and varied as the one-third power of the heat release rate; when Q≥40MW, the growth rate of critical velocity became very small; after Q reach to 60MW, the critical velocity was almost unchanged with the increasing of heat release rate. In addition, the values of critical velocity calculated by Wu and Bakar’model which was derived from small-scale gas fire tests were underestimated. Therefore, the model suggested by Wu and Bakar is not suitable for critical velocity prediction in tunnel fires.
Research on Algorithm Optimization of Hidden Units Data Centre of RBF Neural Network
Authors: Zhao Jing Ying , Guo Hai , Li Xiao Niu
Published: December 2013

Common algorithms of selecting hidden unit data center in RBF neural networks were first discussed in this essay, i.e. k-means algorithm, subtractive clustering algorithm and orthogonal least squares. Meanwhile, a hybrid algorithm mixed of k-means algorithm and particle swarm optimization algorithm was put forward. The algorithm used the position of the particles in particle swarm optimization algorithm to help deal with the defects of local clusters resulted from k-means algorithm and to make optimization with the optimal fitness of k-means particle swarm with the aim to make the final optimal fitness better satisfy the requirements.
Investigations of Vibration Based Condition Assessment of Timber Beams Strengthened with Fiber Reinforced Polymer
Authors: Xiao Run Hua , Li Jian Chun , Shrestha Ri Jun
Published: December 2013

In recent years, research trend on structural condition assessments have largely shifted toward utilizing vibration based methods for structural damage detection and evaluation. On the other hand, research and applications on use of fiber reinforce polymer (FRP) on timber for strengthening or repair damaged timber members in various types of timber structures has also become increasingly popular. Although the application of FRP for repair and/or strengthening of structures has been researched for a long time, research on non-destructive assessment or evaluation of the effectiveness and reliability after FRP repairing or strengthening is yet to be carried out. In this paper, the authors made an attempt on investigation of such issue utilizing Damage Index method, which is a robust vibration-based approach for damage detection. The investigation was aiming at localizing and quantifying damage in timber beams and, more importantly evaluating the effectiveness after the damage was repaired. An experimental program was carried out on five laminated veneer lumber (LVL) beams. Various damage scenarios (i.e. severe, medium, light damage) are introduced on these beams and then repaired with carbon fiber reinforced polymer (CFRP). Experimental results indicate that the use of CFRP was effective in repairing the damaged timber beams. Utilizing Damage Index method can accurately detect the damage location. However, the investigation also shows that direct application of the Damage Index for evaluation of the effectiveness of rehabilitation of the damaged timber beam is not satisfactory. Further investigation and modification of the Damage Index method will be carried out in next stage research.
Analysis of Absorption Coefficient for Eco-Friendly Acoustical Absorbers
Authors: Yeon Jun Oh , Kim Kyoung Woo
Published: December 2013

Primarily used for domestic buildings as a sound absorber are glass wool, rock wool, etc. These absorbers as well as waste absorber created by recycling wastes, PP+PET fiber absorber made from polypropylene and polyester, wood wool board bonded with finely sliced roots of trees and foamed aluminum absorber are recyclable eco-friendly absorbers that are constantly being developed. In this study, we compared the sound absorption performance of currently used absorbers and eco-friendly building absorbers. As a result, the NRC (Noise Reduction Coefficient) was found to be 0.85 for glass wool, 0.95 for rock wool, and 0.70 for polyester, 0.65 for waste absorber, 0.75 for PET+ PP fiber absorber, 0.40 for wood wool board, and 0.75 for foamed aluminum absorber. Based on the results of these absorption coefficients, we expect the usability of the absorbers continues to increase as future eco-friendly building absorbers.
Investigation on Energy Absorption of Slab Foamed Concrete Reinforced by Polypropylene Fibre Subjected to Impact Loading
Authors: Samad Abdul Aziz Abdul , Hadipramana Josef , Ahmad Mujahid Ahmad Zaidi , Mohamad Noridah
Published: December 2013

Polypropylene Fibre (PF) as reinforcement has contributed to the intensity of Foamed Concrete (FC) slab when subjected to impact loading. The presence of PF in the admixture reduces the micro-porosity that generates the micro-crack of the slab. However, the fibrillation of PF in the admixture enhances the bonding mechanism system between PF and the FC matrix. The impact test conducted uses an instrumented drop-weight impact tower. Results show that FC without PF produces a distinct radial crack and clear fragments within the crater field unlike FC with PF. However, both slab materials did not generate spalling nor scabbing upon impact and the influence of porosity produces only local damage due to the mechanism of brittle crushing effect of porous walls. In this study, the energy absorption between FC with and without PF was investigated and from observation produces only minor differences. Results also verify that FC with PF did not loss its ability to absorb energy upon impact.
Brown Coal Fly Ash Concrete Mixture for Industrial Waste Containment
Authors: Abdulsalam Mohammad , Al-Arbeed A.
Published: December 2013

An experimental investigation on the feasibility of a sustainable method for the containment of contaminated sand and its reuse for the base and surface layer of a pavement is presented in this paper. The level of contamination of contaminated sand is determined and a fly ash based compound is added for the containment. The mix proportion for the base and surface layer of the pavement is selected based on the level of contamination. A mixture of fly ash based compound and the oil contaminated sand is tested for various properties such as strength, shrinkage, chloride resistance and leachability in this preliminary investigation, and is qualified for making road foundation layers.
The Heaving Perforance of the Graded Crushed Stone at Cold Region
Authors: Tian Jun Lei , Zeng Xiao Hui , Yang Yan Ke , Cheng Jian Qiang
Published: December 2013

Ha Tai high speed rail is a high-speed railway in cold region of China. The design criteria is very strict. There is many frozen soil over cold region. The research how to reduce the amount of subgrade frost heaving over Ha Tai high speed rail is of great significance.We use a frost heave model to simulate the subgrade frost heaving in the paper.We research how the fine power content and water content influence the frost heave amount of graded crushed stone by contrast test.The result shows that the fine power content and the water content have great influence on the frost heave amount of graded crushed stone .The frost heave ratio increases with the fine powder content and the water content.
An Acetylcholinesterase Biosensor Based on Platinum-Palladium Nanoparticles-Single Walled Carbon Nanotubes
Authors: Zhou Tao , Zhou Qing , Yang Yun
Published: December 2013

A sensitive amperometric acetylcholinesterase (AChE) biosensor based on platinum-palladium nanoparticles (Pt-Pd NPs)-single-walled carbon nanotubes (SWCNTs) and chitosan (CS) modified glassy carbon electrode (GCE) is developed. The Pt-PdNPs-SWCNTs-CS nanocomposites offer an excellent electron conductivity, catalysis and hydrophilic surface for biomolecule adhesion. CS is used as a cross-linker to immobilize the AChE on the surface of Pt-PdNPs-SWCNTs-CS and as a protective membrane of the AChE biosensor. The biosensor shows favorable affinity to acetylthiocholine chloride. It exhibits good sensitivity, stability, reproducibility and low cost, thus providing a promising tool for analysis of enzyme inhibitors. More importantly, this study could provide a universal platform for meeting the demand of the effective immobilization enzyme on the electrode surface.