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A novel OFDM-based wireless positioning protocol for cellular networks

ICIC Express Letters 2011年第4 B期5卷 1207-1212页

作者： Zhao, Guannan Wang, Donglin Fattouche, Michel Jin, Minglu Faculty of Electronic Information and Electrical Engineering Dalian University of Technology No. 2 Linggong Rd. Ganjingzi Dist. Dalian 116023 China Department of Electrical and Computer Engineering University of Calgary 2500 University Dr. NW Calgary AB T2N 1N4 Canada

In this paper, a novel orthogonal frequency division modulation (OFDM) based positioning protocol with more location accuracy is proposed for cellular networks. We also present 4 suitable positioning methods for our protocol in terms of obtained range measurements. A new unified Crame-Rao lower bounds (CRLB) is derived theoretically for these location schemes. Further, we provide best linear unbiased estimator (BLUE) algorithms to locate a mobile station (MS) in our presented protocol;their performance is discussed and compared according to the positioning error covariance matrix (PECM). The theoretical analyses show BLUE-based methods can approach the CRLB bounds asymptotically under some condition, i.e., they are asymptotically efficient. Finally, the relation formula of their location accuracy is given. ICIC International © 2011 ISSN 1881-803X.

关键词： Orthogonal frequency division multiplexing

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A new transmission charging methodology for Australian National Electricity Market

A new transmission charging methodology for Australian Natio...

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IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia)

作者： N. H. Radzi Z. Y. Dong M. Y. Hassan School of Information Technology and Electrical Engineering University of Queensland Brisbane Australia Faculty of Electrical and Electronic Engineering Department of Power Electrical Engineering Universiti Tun Hussein Onn Malaysia Parit Raja Johor Malaysia School of Electrical Engineering and Computer Science University of Newcastle Callaghan NSW Australia Department of Power Electrical Engineering Universiti Teknologi Malaysia Johor Malaysia

The Australian National Electricity Market (NEM) continues to move from a predominantly government owned and managed market to a more competitive, commercial one. Hence, transmission pricing plays an important role in NEM transmission network business. Currently, the NEM has been using the Cost Reflective Network Pricing (CRNP) and Modified Cost Reflective Network Pricing (MCNRP) method for transmission service charges. The drawbacks of both methods are (1) the load is burden with high transmission use of system (TUoS) charges as this charges is only paid by load (2) inaccurate transmission pricing method as the contribution of counter flows and local load case are totally being neglected. Hence, in this paper, a novel transmission pricing method which is called Distribution Factors Enhanced Transmission Pricing (DFETP) method is introduced in order to increase the utilization efficiency of the network as well as to promote the green technology in a market environment.

关键词： Generators Pricing Power transmission lines Load flow Resource management Radiation detectors Investments

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Hybrid RSM-fuzzy modeling for hardness prediction of TiAlN coatings

Hybrid RSM-fuzzy modeling for hardness prediction of TiAlN c...

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International Conference on Intelligent Systems Design and Applications (ISDA)

作者： A. S. M. Jaya M. R. Muhamad M. N. A. Rahman Z. A. F. M. Napiah S. Z. M. Hashim H. Haron Faculty of Information & Communication Technology Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia Centre of Graduate Studies Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia Faculty of Manufacturing Engineering Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia Faculty of Electronic & Computer Engineering Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia Soft Computing Research Group (SCRG) Faculty of Computer Sciences & Information System Universiti Teknologi Malaysia Skudai Johor Malaysia

In this paper, a new approach in predicting the hardness of Titanium Aluminum Nitrite (TiAlN) coatings using hybrid RSM-fuzzy model is implemented. TiAlN coatings are usually used in high-speed machining due to its excellent surface hardness and wear resistance. The TiAlN coatings were produced using Physical Vapor Deposition (PVD) magnetron sputtering process. A statistical design of experiment called Response Surface Methodology (RSM) was used in collecting optimized data. The fuzzy rules were constructed using actual experimental data. Meanwhile, the hardness values were generated using the RSM hardness model. Triangular shape of membership functions were used for inputs as well as output. The substrate sputtering power, bias voltage and temperature were selected as the input parameters and the coating hardness as an output of the process. The results of hybrid RSM-fuzzy model were compared against the experimental result and fuzzy single model based on the percentage error, mean square error (MSE), co-efficient determination (R 2 ) and model accuracy. The result indicated that the hybrid RSM-fuzzy model obtained the better result compared to the fuzzy single model. The hybrid model with seven triangular membership functions gave an excellent result with respective average percentage error, MSE, R 2 and model accuracy were 11.5%, 1.09, 0.989 and 88.49%. The good performance of the hybrid model showed that the RSM hardness model could be embedded in fuzzy rule-based model to assist in generating more fuzzy rules in order to obtain better prediction result.

关键词： Coatings Substrates Mathematical model Predictive models Sputtering Surface treatment Response surface methodology

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Optimizing parameters of LS-SVM based on chaotic ant swarm algorithm

Optimizing parameters of LS-SVM based on chaotic ant swarm a...

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2011 International Conference on Electric Information and Control engineering, ICEICE 2011

作者： Xie, Chunli Shao, Cheng Zhao, Dandan Cao, Jiangtao Faculty of Electronic Information and Electrical Engineering Dalian University of Technology Liaoning Province 116024 China College of Electromechanical and Information Engineering Dalian Nationalities University Dalian Liaoning Province 116600 China School of Computer Science and Engineering Dalian Nationalities University Liaoning Province 116024 China School of Information and Control Engineering Liaoning Shihua University Fushun 113001 China

ISBN: (纸本)9781424480395

Appropriate parameters are very crucial to the learning performance and generalization ability of least-squares support vector machines (LS-SVM). In this paper, a novel parameter selection method for LS-SVM is presented based on chaotic ant swarm (CAS) algorithm. The selection problem of LS-SVM parameters is considered as a compound optimization problem. Then objective function of optimization problem is set and a CAS optimization algorithm is employed to search optimal objective function. CAS algorithm is global search method and it need not to consider LS-SVM dimensionality and complexity. The simulation results show that the proposed method is an effective approach for parameter optimization and the good performance for function approximation is obtained. © 2011 IEEE.

关键词： Support vector machines

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Direct observation of closed-loop ferrohydrodynamic pumping under traveling magnetic fields

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Physical Review B 2011年第10期84卷 104431-104431页

作者： Leidong Mao Shihab Elborai Xiaowei He Markus Zahn Hur Koser Faculty of Engineering Nanoscale Science and Engineering Center University of Georgia 220 Riverbend Road Room 166 Athens Georgia 30602 USA Department of Electrical Engineering and Computer Science Laboratory for Electromagnetic and Electronic Systems Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA Department of Electrical Engineering Yale University Becton Center Room 507 15 Prospect Street New Haven Connecticut 06520 USA

Ferrofluid-based liquid manipulation schemes typically actuate an immiscible liquid via a ferrofluid plug, using high magnetic flux (∼1 T) densities and strong field gradients created with bulky permanent magnets. They rely on surface tension effects to maintain the cohesion of the ferrofluid plug, necessitating miniature channels and slow (∼1 μl/min) flow speeds. Here, we demonstrate direct ferrohydrodynamic pumping using traveling magnetic fields at controllable speeds in a simple, closed-loop geometry without any mechanically actuated components. The pumping approach is compact, scalable, and practical. Using moderate field amplitudes (∼10 mT), we obtained a maximum volumetric flow rate of 0.69 ml/s using a readily available commercial ferrofluid. Our closed-loop pumping approach could lead to integrated and efficient liquid manipulation and cooling schemes based on ferrofluids.

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Abstract Reporting and Reformation Schemes for Wireless Sensor Networks

Abstract Reporting and Reformation Schemes for Wireless Sens...

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第一届国际无线通信和应用会议

作者： Hock Guan Goh Soung Yue Liew Kae Hsiang Kwong Craig Michie Ivan Andonovic Centre of Intelligent Dynamic Communications Department of Electronic and Electrical EngineeringFaculty of Engineering University of StrathclydeRoyal College Building204 George Street GlasgowG1 1XWUnited Kingdom Department of Computer and Communication Technology Faculty of Information and Communication Technology University of Tunku Abdul RahmanJalan UniversitiBandar Barat 31900 KamparPerakMalaysia Department of Computer and Communication Technology Faculty of Information and Communication TechnologyUniversity of Tunku Abdul RahmanJalan UniversitiBandar Barat31900 KamparPerakMalaysia MIMOS Berhad Wireless Network and Protocol ResearchTechnology Park Malaysia57000 Bukit JalilKuala LumpurMalaysia

Energy resource constraints inherent in wireless sensor network deployments limit the amount of data that can be transported to a destination sink. An alternative strategy that could be invoked to address this issue is to only report the data sample when there is significant change in the sensed data from sensor nodes, and reconstruct the unreported data at the base station without compromising the needs of the application. It is shown that judicious reporting of data significantly reduces the number of packets that are transmitted. In this paper,a mechanism that adopts these principles, referred to as Abstract Reporting and Reformation (ARR), is proposed and demonstrated.

关键词： Abstract Reporting and Reformation, Data Aggregation, Wireless Sensor Networks.

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Design on Control System of Cutting Machine for Chip Component Based on Vision Positioning

Design on Control System of Cutting Machine for Chip Compone...

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International Conference on Information technology for Manufacturing Systems

作者： Liu Yi Fan Cheng Shun Chen Lun Qiang Faculty of Electronic Information & Mechanical and Electrical Engineering Zhaoqing University Faculty of Computer Scientist and Software Technology Zhaoqing University

ISBN: (纸本)9780878492879

The control system of a vision-based positioning cutting machine of cutting molding for micro chip components has been designed in this paper. The industrial computer is regarded as the control core part in order to achieve the motion control of the equipment, the image capture and other functions. In addition, in the design the visual recognition is organically combined with the precision mechanism, the precise positioning in the cutting process of the equipment and its operation stability is ensured. In this paper, the system's modularization design as well as the functions realized by each module is introduced. The cutting machine work flow chart and the hardware structure chart of control system is given.

关键词： Cut-plate Cutting machine electronic chip component Vision positioning Control system

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Evaluating 3D position and velocity of subject in parabolic flight experiment by use of the binocular stereo vision measurement

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Chinese Optics Letters 2010年第6期8卷 601-605页

作者：金涛贾宏志侯文玫 Ryo Yamamoto Norihiro Nagai Yusaku Fujii Koichi Maru Naoya Ohta Kazuhito Shimada Shanghai Key Laboratory of Modern Optical System School of Optical-Electrical and Computer EngineeringUniversity of Shanghai for Science and Technology Department of Electronic Engineering Faculty of EngineeringGunma University Department of Computer Science Faculty of EngineeringGunma University Medical Operations Japan Aerospace Exploration Agency(JAXA)JAXA Houston OfficeHouston 77058USA

A practical method for evaluating the three-dimensional（3D） position and velocity of a moving object used in the parabolic flight experiment is developed by using the binocular stereo vision measurement theory. The camera calibration mathematic model without considering the lens distortion is *** direct linear transformation（DLT） algorithm is improved to accomplish the camera *** camera calibration result and optimization algorithm are used to calculate the object＇s world coordinate from image *** 3D position and the velocity of the moving object are *** standard uncertainty in estimating the velocity is 0.0024 m/s,which corresponds to 1%level of the velocity of the object in the *** results show that this method is very useful for the parabolic flight experiments.

关键词： Binoculars Calibration Cameras Experiments Linear transformations Measurement theory Three dimensional Uncertainty analysis Velocity

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Development of adaptive and intelligent web-based educational systems 4th

Development of adaptive and intelligent web-based educationa...

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International Conference on Application of Information and Communication Technologies

作者： Kahraman, H. Tolga Sagiroglu, Seref Colak, Ilhami Karadeniz Technical University Faculty of Technology Computer Education Department Turkey Gazi University Faculty of Engineering Computer Engineering Department Turkey Gazi University Faculty of Technology Electric Electronic Engineering Department Turkey

ISBN: (纸本)9781424469031

The objective of this study is to discuss the problems to be come across in new generation web based educational system designs and the solutions derived for these problems. Some of the objects of "challenges" in education applications are formation of domain models belonging to the applications, determination of user knowledge states and formation of adaptive content, link and navigation maps. The problems to be faced in new generation educational systems can be solved by combining adaptive and intelligent approaches adopted in hypermedia models. It is expected that this study might be a guide for developing new generation web-based educational applications. © 2010 IEEE.

关键词： Websites

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Feature selection for image spam classification

Feature selection for image spam classification

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2010 International Conference on Communications, Circuits and Systems, ICCCAS 2010

作者： Liu, Qiao Zhang, Feng-Li Qin, Zhi-Guang Wang, Chao Chen, Shuang Ma, Qiu-Ming School of Computer Science and Engineering University of Electronic Science and Technology of China 610054 China Faculty of School of Computer Science and Engineering University of Electronic Science and Technology of China 610054 China

ISBN: (纸本)9781424482238

This paper considers the low-level feature modeling problem in image spam classification, in which most of the prevalent content based spam filters are shown to be inefficient because their OCR procedure are vulnerable to text obscuring attacks from spammers. We first built up a basic feature set through a low-level feature extraction process, and then proposed a stepwise regression method to determine the best subset automatically, which was controlled by a minimum description length criterion. Experimental results indicate that the proposed approach is very effective for the purpose of modeling spam images, and the selected feature set is applicable for practical anti-spam tasks, its performance is comparable to some other cutting-edge approaches. © 2010 IEEE.

关键词： Image classification

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