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Computational Problem-Solving (ICCP), 2010 International Conference on

Date 3-5 Dec. 2010

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  • [Front and back cover]

    Publication Year: 2010 , Page(s): c1 - c4
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  • Schedule for ICCP2010

    Publication Year: 2010 , Page(s): 1
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  • [Title page]

    Publication Year: 2010 , Page(s): 1
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  • [Copyright notice]

    Publication Year: 2010 , Page(s): 1
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  • Greetings from ICCP2010 conference chairs

    Publication Year: 2010 , Page(s): I
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  • Organizers

    Publication Year: 2010 , Page(s): II
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  • ICCP2010 technical Steering Committee members

    Publication Year: 2010 , Page(s): III
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  • Table of contents

    Publication Year: 2010 , Page(s): IV
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  • Table of contents

    Publication Year: 2010 , Page(s): V
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  • Table of contents

    Publication Year: 2010 , Page(s): VI
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  • Table of contents

    Publication Year: 2010 , Page(s): VII
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  • Table of contents

    Publication Year: 2010 , Page(s): VIII
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  • Table of contents

    Publication Year: 2010 , Page(s): IX
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  • Table of contents

    Publication Year: 2010 , Page(s): X
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  • An improved niche-based adaptive genetic algorithm for WTA problem solving

    Publication Year: 2010 , Page(s): 27 - 30
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (669 KB) |  | HTML iconHTML  

    In order to solve the weapon-target assignment (WTA) problem rapidly, several key operations in genetic algorithm are improved. A unique fire unit sorting-based population initialization method is addressed. With the niche share function and adaptive thinking, an improved niche-based adaptive genetic algorithm (NAGA) is designed and achieved. In the end, the simulation for real time and reliability is examined. The result illustrates that this algorithm is valid with better performance and convergence rate. View full abstract»

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  • An overlapped domain decomposition method for solving electromagnetic surface integral equations

    Publication Year: 2010 , Page(s): 1 - 4
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (234 KB) |  | HTML iconHTML  

    An overlapped domain decomposition method with congruent sub-domains is developed for electromagnetic surface integral equations. Based on congruent sub-domains, the proposed method creates a set of uniform mesh such that all the self-matrices on the congruent sub-domains share an interior-interior sub-matrix, which can reduce the memory requirement and the matrix filling time, intensively, especially for extremely large objects with great numbers of congruent sub-domains. View full abstract»

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  • Application of secondary electron composition contrast imaging method in microstructure studies on the microwave tube barium-tungsten cathode

    Publication Year: 2010 , Page(s): 16 - 18
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (114 KB) |  | HTML iconHTML  

    The study of the secondary electron composition contrast imaging method has been developed with a conventional scanning electron microscope (SEM) equipped with ultra-thin window energy dispersive X-ray spectrometer (EDS). On the basis of the study of the principle of secondary electron emission, secondary electron composition contrast imaging method is investigated, and the ranges of its application are also discussed. This method is applied in the microstructure studies on the microwave tube barium-tungsten cathode. The results show that, compared with backscattered electron image, the secondary electron image can also reveal composition contrast well in certain conditions. Furthermore, the resolution of secondary electron composition contrast image is higher. In some cases, the secondary electron image can distinguish impurities which may bring wrong results. In the microstructure studies on the microwave tube barium-tungsten cathode, compared with backscattered electron image, secondary electron composition contrast imaging method is reasonable and practicable. View full abstract»

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  • MRS response with distributed array loops for 2D groundwater tomography

    Publication Year: 2010 , Page(s): 31 - 34
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (278 KB) |  | HTML iconHTML  

    A new method for 2D groundwater tomography using Magnetic Resonance Sounding (MRS) with distributed array loops is described and the exciting field of the surface transmitter and the response from the spin magnetic field to the receivers are numerical calculated. To assess the effective effort in subsurface structure resolution by the use of 2D MRS surveys, a synthetic survey with distributed array receiver loop is modeled. View full abstract»

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  • 3-D scattering analysis with modified high-order FDTD method based on Maxwell's equations

    Publication Year: 2010 , Page(s): 19 - 22
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (114 KB)  

    A generalized high-order finite-difference time-domain (FDTD) method based on Maxwell's curl equations, in which the spatial difference utilizes the discrete singular convolution (DSC) and the time difference utilizes the symplectic integration propagator (SIP), is proposed to analyze three dimensional electromagnetic scattering problems. The proposed method (which is based on DSC-SIP scheme) has demonstrated high stability and enhanced effectiveness compared with the standard FDTD procedure. In addition, there are significant reductions in CPU time and memory space requirements when large grid meshes is used, so it can be applied to the large size target's three dimensional scattering analysis. View full abstract»

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  • A general finite difference time domain method for hybrid dispersive media model

    Publication Year: 2010 , Page(s): 23 - 26
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (102 KB) |  | HTML iconHTML  

    The shift operator finite difference time domain (SO-FDTD) method is developed to deal with hybrid dispersive media model. First, we have proved that the complex permittivity of hybrid dispersive media model may be described by rational polynomial fraction in jω. Then, by introducing zt defined as a shift operator, the relation between D and E is derived in time domain. The constitutive relation in discretized time domain and the recursive formulation for D and E available for FDTD computation are obtained. Finally, the reflection of an first order Debye and first order Lorentz hybrid dispersive slab is computed. The computed results are in good agreement with the one obtained by analytic method. View full abstract»

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  • Feedback model based on P2P traffic control

    Publication Year: 2010 , Page(s): 35 - 38
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (187 KB) |  | HTML iconHTML  

    P2P activity has been a significant and growing component of Internet traffic. With the increasing number of P2P application users, the P2P applications are consuming most of the Internet bandwidth; otherwise they have a negative effect on traditional Internet applications. In order to solve this problem, researchers proposed various technologies to manage P2P traffic, such as P2P traffic control, localization and caching technologies. So this paper presented the concept of feedback with the help of electronics, and proposed feedback model based on traffic control. The experimental results show that can not only control the P2P traffic within the users' satisfaction, but also keep a dynamic balance between reliability and availability for both Internet bandwidth and resource traffic. View full abstract»

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  • A image denoising by modified nonlocal means method based on generalized cross-validation

    Publication Year: 2010 , Page(s): 12 - 15
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (150 KB) |  | HTML iconHTML  

    Nonlocal means method (NLM) is a powerful algorithm in image denoising area. In this article, firstly its modified expression is defined, and then generalized cross validation (GCV) method is used to approximate the optimal value of two parameters in this expression. At the same time, the analytical formula of GCV method can also be derived from modified expression. As a result, the restoration image processed by optimal value of parameters is mostly close to the original noise-free image and their mean square error (MSE) is nearly minimal compared with others. Finally, the experimental results show the performance of noise reduction by different methods. View full abstract»

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  • Fast calculation of electromagnetic scattering from three-dimensional buried object

    Publication Year: 2010 , Page(s): 5 - 8
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (126 KB) |  | HTML iconHTML  

    In this paper, the distance between source and field points is divided into ultra-near field region, near field region and far field region for fast and accurately calculating the spatial Green's function. The spatial Green's functions within the three regions are respectively calculated by the Langrage interpolation scheme, the DCIM with surface wave poles being extracted and the SDP with leaky wave poles being extracted. In this way, electromagnetic scattering from the electrically large buried object can be calculated fast and accurately. The numerical examples show that the presented method is accurate and efficient. View full abstract»

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  • Spectrum sensing based on estimation of direction of arrival

    Publication Year: 2010 , Page(s): 39 - 42
    Cited by:  Papers (9)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (100 KB) |  | HTML iconHTML  

    Spectrum sensing is one of the most important components for the establishment of cognitive radio (CR) system. The traditional spectrum sensing technology is to detect that a band of frequencies is occupied or not by the primary user of that band at the appointment time and location. However, with multi-antenna technologies, e.g. beamforming, multiple users can be multiplexed into the same channel at the same time in same geographical areas. In this paper, an angle dimension is introduced into the detection algorithm as a new spectrum opportunity. The Ratio of maximum to minimum eigenvalue (MME) detector is applied to detect the presence of primary signal, and then the MUSIC algorithm is involved into the direction-of-arrival (DOA) estimation of the primary signal. It is obviously demonstrated by the simulation results that the proposed method has the more spectrum sensing opportunities without interference to the primary user. View full abstract»

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  • A 2-level AIM for solving EM scattering from electrically large objects

    Publication Year: 2010 , Page(s): 9 - 11
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (133 KB) |  | HTML iconHTML  

    The 2-level adaptive integral method is represented in this paper. Two level grids and two level boxes are built for calculating relatively nearer interaction and relatively farer interaction. This algorithm can be used to calculate larger object than the AIM. The last numerical result suggests that the proposed method is efficient and accurate. View full abstract»

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