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Engineering and Technology (S-CET), 2012 Spring Congress on

Date 27-30 May 2012

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Displaying Results 1 - 25 of 262
  • 2012 Spring World Congress on Engineering and Technology - SCET2012 [Title page]

    Publication Year: 2012 , Page(s): i - ii
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    Freely Available from IEEE
  • 2012 Spring Congress on Engineering and Technology [Copyright notice]

    Publication Year: 2012 , Page(s): i
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  • SCET 2012 Welcome

    Publication Year: 2012 , Page(s): i
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    Freely Available from IEEE
  • SCET 2012 Conference Committee

    Publication Year: 2012 , Page(s): i - ii
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    Freely Available from IEEE
  • 3D CAD Model Retrieval Using 2D Representative Views

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (438 KB) |  | HTML iconHTML  

    A novel 3D CAD model retrieval method using 2D representative views is proposed for the reuse of CAD models. Initially, a set of 2D projected views is generated from multiple viewpoints which are evenly distributed on the viewing sphere of a CAD model. Then, the Apriori algorithm is employed to select the representative views from the set. The similarity between 3D models is determined by the likeness of their corresponding 2D representative views. The experimental results show the effectiveness of the proposed method. View full abstract»

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  • 3D Particle Simulation on Cancer Growth and Angiogenesis - Using 2D Blood Vessel Image

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (388 KB) |  | HTML iconHTML  

    There is a close relation between cancer growth and angiogenesis. It is necessary to make the new blood vessel for supplying nutrition in cancer growth. By producing a growth factor oneself, angiogenesis is stimulated to the cancer cell. Thus they grow by interacting each other. As imaging of tumor capillaries proliferation are difficult to observe, we investigate to clarify the phenomenon using numerical simulation. In our study, a three-dimensional particle model is used to simulate the growth of cancer cells and angiogenesis, and to analyze the relationship between them. In this study, 3D growth simulation was carried out using the 2D real blood vessel image of rabbit ear. The analysis confirmed the growth of the tumor vascular network formed with the growth of cancer cells. Considering internal pressure effect to branch condition, the blood vessel network tends to wrap around the surface of a tumor, and blood vessel network seems to be closer to the real image. View full abstract»

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  • A 3-D Graphical Method Applied to The Similarities of Protein Sequences

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (268 KB) |  | HTML iconHTML  

    Based on the selected chemical and physical properties of amino acids, a dynamic 3-D graphical representation of protein sequences is outlined. We introduce the numerical characterization of protein graphs as descriptors to analyze and compare the nine ND5 proteins, and the results consist with the known fact of evolution. The graph of protein sequences have good visibility, the approach is simple, convenient, and fast. View full abstract»

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  • A Channel Characteristics Projection Method in MISO Systems

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (235 KB) |  | HTML iconHTML  

    This paper proposes a new approach to enhance the security of MISO systems. A channel characteristics projection method is developed to secure MISO systems at the physical layer. Transmission secrecy can be guaranteed by randomness introduced by the authorized channel characteristics projection, which generates a pair of projection vectors randomly chosen as transmitting beam-former. While the inner-product between authorized channel characteristics and transmitting beam-former is always constant, the eavesdropper's one is randomly changed. Extensive simulations are conducted to demonstrate the proposed method. View full abstract»

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  • A Coupled Algorithm of Finite Volume Method with Monte-Carlo Method for Simulating Transient Radiation Effects of Semiconductor Devices

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (755 KB) |  | HTML iconHTML  

    A coupled algorithm of FVM (Finite-Volume Method) with MC (Monte-Carlo) Method for particle transport has been developed in order to study the transient radiation response of semiconductor devices from device-level. A code based on GEANT4 is also built to trace the incident particle and to give the distribution of ionized charges, which acts as a source term in semiconductor governing equations. The transient response of irradiated devices is obtained by solving these equations numerically with FVM, and a part of results is compared with MEDICI' s, which agree well. View full abstract»

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  • A Cross-Platform Mobile Payment Solution Based on Web Technology

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (404 KB) |  | HTML iconHTML  

    With the rapid development of mobile Internet, more and more companies transfer their business to M-Commerce, and more and more users make consumption payment through mobile devices. However, the diversity of mobile devices and the security of payment are always the key factors that restrict the development of M-Commerce. This paper proposes a secure mobile payment solution that can be integrated quickly, and can effectively solve the cross-platform issues brought by terminal diversity by using Web technology. In order to protect the security of the payment process, the third-generation mobile payment standard CUPMobile of China UnionPay is applied in this solution. Currently, this solution has been successfully applied in the mobile phone payment of China UnionPay and is proved to be feasible by practice. View full abstract»

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  • A DCT Analysis-Based Deblocking Algorithm Using Spatial Postprocessing

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (336 KB) |  | HTML iconHTML  

    This paper proposes a DCT analysis-based adaptive spatial deblocking algorithm to reduce the block discontinuity. We analyze the properties of the decoded one dimensional DCT coefficients. Based on this analysis, we utilize two adjacent vectors to classify the vector containing block boundary into three models. Then, for each model, we apply different filters according to the local properties. Simulation results indicate that the proposed algorithm outperforms a large number of deblocking methods in the literature, in terms of the PSNR, subjective visual quality, and computational complexity. View full abstract»

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  • A Decoding Algorithm in High-Speed Mobility Cooperative SFBC Based OFDM System

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (329 KB) |  | HTML iconHTML  

    In a cooperative communication system, inter-carrier interference (ICI) appears due to the Doppler shift, which severely degrades the performance of the OFDM scheme. In this paper, we concerned with signal decoding in cooperative space frequency block coding (SFBC) based OFDM system, while combating ICI at the same time. Specifically, the decoding algorithm is proposed by using the received signal on odd-numbered and the even-numbered subcarrier to decode data in pairs in the scenario of high-speed mobility. View full abstract»

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  • A Design of High-Precision Digital Resistance Meter

    Publication Year: 2012 , Page(s): 1 - 5
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (250 KB) |  | HTML iconHTML  

    This paper introduces a system design of high-precision resistance meter based on a high-performance microprocessor MC9S08AC16 and a high-resolution A/D converter AD7705. The system block diagram, hardware circuits, software and test results are given. Functions such as automatic range switching, zero adjustment, software error compensation and auto distinguish based on error level are added to the meter. Experiments show that the meter has many advantages such as easy design, high accuracy, compact structure, high reliability and low cost. View full abstract»

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  • A Design of Wide-Stopband Microstrip Diplexers with Multiorder Spurious-Mode Suppression Using Stepped-Impedance Resonators

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (601 KB) |  | HTML iconHTML  

    This paper proposes a diplexer design method for suppressing spurious responses in the stopband by choosing the constitutive resonators with the same fundamental frequency, but staggered higher order resonant frequencies. The design concept is demonstrated by three pole parallel-coupled bandpass filter. The bandpass filter is composed of three different stepped impedance resonators for which a general design guideline has been provided in order have the same fundamental frequency and different spurious frequencies by proper adjusting the impedance and length ratios of stepped impedance resonators. The measured results are in good agreement with the simulated predictions, showing that better than -29 dB rejection levels in the stopband up to and are achieved by Chevbyshev filters. View full abstract»

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  • A DTW and BPN Based Approach for Modeling Nonlinear Load

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (268 KB) |  | HTML iconHTML  

    It is known that a direct application of artificial neural network (ANN) for modeling high power, nonlinear, and impact load may lead to inaccuracies. This paper proposes an approach that the characteristic of the high power, nonlinear and time varying load is modeled by advanced ANN, which is implemented by using back propagation network (BPN) and dynamic time warping (DTW) algorithms. The model of the nonlinear load can be accurately established, the consumption of the voltage, reactive power and the precision of the model can be obtained. Then the type of the reactive power compensation devices and the capacity of the reactive power compensation equipments can be effectively determined. View full abstract»

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  • A Dynamic Phasor Estimator Based on Low-Pass Differentiator Energy Operator

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (262 KB) |  | HTML iconHTML  

    Precise, fast and reliable estimation of signal features is significant for Power Quality (PQ) assessment and it can be accomplished with parameters of synchronous phasor measured by Wide Area Measurement system (WAMS). Therefore, estimation algorithm of synchronous phasor during PQ dynamics has drawn much attention. In this paper, dynamic characteristics are described as non-stationary signals in terms of amplitude and frequency modulations (AM-FM). A dynamic phasor estimator is presented based on AM-FM demodulation by Energy Operator (EO). For better performance, Low-pass differentiator is introduced to reduce effect of noise and harmonics. Simulations illustrate the efficiency of estimator which meets the requirement of on-line application for power system. View full abstract»

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  • A Fast Route Planning Algorithm

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (80 KB) |  | HTML iconHTML  

    This paper studies the route planning problem. Two efficient algorithms to solve the route planning problem are presented. The two algorithms are in the algorithm framework of bucket algorithm. The improved algorithms speed up the bucket algorithm significantly. The computational experiments demonstrate that the achieved results are not only of theoretical interest, but also that the techniques developed may actually lead to considerably faster algorithm. View full abstract»

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  • A Graph Based Classification Method for Hyperspectral Images

    Publication Year: 2012 , Page(s): 1 - 4
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (269 KB) |  | HTML iconHTML  

    The goal of this paper is to apply graph cut (GC) theory to the classification of hyperspectral remote sensing images. The task is formulated as a labeling problem on Markov Random Field (MRF) constructed on the image grid, and graph cut algorithm is employed to solve this task. In general, a large number of user interactive strikes are necessary to obtain satisfactory segmentation results. Due to the spatial variability of spectral signatures, however, hyperspectral remote sensing images often contain many tiny regions. Labeling all these tiny regions usually needs expensive human labor. To overcome this difficulty, a pixel-wise fuzzy classification based on support vector machine (SVM) is first applied. As a result, only pixels with high probabilities are preserved as labeled ones. This generates a pseudo user strike map. This map is then employed for graph cut to evaluate the truthful likelihoods of class labels and propagate them to the MRF. To evaluate the robustness of our method, we have tested our method on small training sets. Additionally, comparisons are made between the results of SVM, SVM with stacking neighboring vectors, SVM with morphological pre-processing and our method. Comparative experimental results demonstrate the validity of our method. View full abstract»

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  • A Highly Linear Broadband CMOS LNA with Noise Cancellation

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (279 KB) |  | HTML iconHTML  

    A broadband low-noise amplifier (LNA) design that utilizes simultaneous noise and distortion cancellation is presented. The proposed LNA utilizes a PMOS and individual stages with common-gate and common-source cascade for second-order and third-order distortion cancellation. The LNA IIP3 is limited by the second-order interaction between the common source and common gate stages. The LNA is designed using standard 0.18μm CMOS technology. The LNA achieves S21 of 12.1 dB and the NF is lower than 3.1 dB over 0.7-2.5GHz. The IIP3 is +8dBm at 1.5GHz. View full abstract»

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  • A Hormone Inspired Multi-Robot Formation Algorithm

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (261 KB) |  | HTML iconHTML  

    Endocrine system is one of the most important control systems of human body. It cooperates with neural system and immune system to maintain homeostasis of human body. Endocrine system modulates human body by a substance called hormone. It contains substantial information processing algorithms in hormone's working mechanism. Inspired by biological hormone, this paper proposes an algorithm used in formation problem in multi-robot system. This algorithm can help multi-robot system adapt to dynamic environment and form various kinds of shapes. Simulated experiments prove correctness and effectiveness of the algorithm. View full abstract»

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  • A Jacobi Method for Lattice Basis Reduction

    Publication Year: 2012 , Page(s): 1 - 4
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (92 KB) |  | HTML iconHTML  

    Lattice reduction aided decoding has been successfully used in wireless communications. In this paper, we propose a Jacobi method for lattice basis reduction. Jacobi method is attractive, because it is inherently parallel. Thus high performance can be achieved by exploiting multiprocessor and/or multicore architectures. We also present our experimental results on the convergence of our method and the comparison with the LLL algorithm, a lattice basis reduction method widely used in wireless communication applications. View full abstract»

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  • A Kind of Data Stream Clustering Algorithm Based on Grid and Relative Density

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (192 KB) |  | HTML iconHTML  

    This paper provided a Data Stream Clustering Algorithm Based on Grid and Relative Density which inherits the advantages of grid based clustering and relative density based clustering which can discover arbitrary-shape and multi-resolution clusters. Meanwhile introduced a concept of support which made algorithm adopt thoughts based on distance-based algorithm, provide the way to solve the effects of data object around grid on grid density. View full abstract»

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  • A Ku Band High Power Rectangular Waveguide Directional Coupler's Design

    Publication Year: 2012 , Page(s): 1 - 4
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (253 KB) |  | HTML iconHTML  

    This paper demonstrates an effective designing method of the waveguide directional coupler. The coupler designed using this method has wide band, high directivity, flat coupling, low voltage standing ratio and manufacturing accuracy. A Ku band high power waveguide directional coupler has been designed, the directivity is more than 28 dB and the coupling coefficient is 30dB with the deviation of 0.8 dB. View full abstract»

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  • A Large Capacity and Low Computation Watermarking Based on Sudoku and Lifting Wavelet Coefficients

    Publication Year: 2012 , Page(s): 1 - 4
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (436 KB) |  | HTML iconHTML  

    In this paper, a new watermarking algorithm is proposed based on LWT2(2-D Lifting wavelet transform) and a 16 × 16 Sudoku. LWT2 produces coefficient sub-bands and the coefficient sub-bands' values are in integer form and coefficient values pair instead of pixel pair was used. The concept of Sudoku was adopted in the proposed method, which aims to increase embedding capacity. Experimental results showed that the proposed method has larger hiding capacity and better watermarked-image quality, the embedding capacity is 2 bit per pixel, which is greater than the related work. Because of 2-D Lifting wavelet transform, it is also a low computation cost data embedding method. View full abstract»

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  • A Lighting Insensitive Face Detection Method on Color Images

    Publication Year: 2012 , Page(s): 1 - 4
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (893 KB) |  | HTML iconHTML  

    In this paper we proposed a lighting insensitive face detection method depending upon the skin color and edge of the input color image. First, image enhancement is performed, especially if the image is acquired from an unconstrained illumination condition. Next, the skin segmentation in YCbCr and RGB space is conducted and the result is combined with edges of the input image. Candidate verification using primitive shape features of face is applied to decide which of the candidate regions corresponds to a face. The proposed face detection method is invariant to size, pose, expression and illumination conditions. View full abstract»

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