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Systems Engineering and Electronics, Journal of

Issue 3 • Date Sept. 1997

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Displaying Results 1 - 14 of 14
  • [Front cover]

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    Freely Available from IEEE
  • Copyright page

    Page(s): 1
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  • Contents

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    Freely Available from IEEE
  • FD-TD analysis of electromagnetic wave scattering by infinite periodic structure

    Page(s): 1 - 5
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (602 KB)  

    FD-TD analysis takes a lot of advantages in dealing with the scattering from complex structures. In this paper, the approach of analyzing the scattering by infinite periodic structures is introduced. A new modified perfectly matched layer absorbing boundary condition is used to facilitate the FD-TD modeling. The successful design of infrared/millimeter wave frequency selective surface shows the validity of this technique. View full abstract»

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  • Conversion technique of vector wave functions: Formulas and applications

    Page(s): 6 - 15
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1268 KB)  

    The conversion theory of vector wave function is one of important problems in electromagnetic. This paper presents a systematic treatment of the conversion technique and some applications. In this paper, the conversion relations of standard and non-standard spherical vector wave functions, standard and non-standard cylindrical vector wave functions, and spherical and cylindrical vector wave functions are developed. As an example of application of vector wave function expansion, the expansion of plane wave and dipole field in two-medium half-spaces are given. As an example of application of vector wave function conversion, the scattering patterns of buried conducting and dielectric spheres are presented. Inspection on the numerical results shows that the technique and associated programs presented in this paper are efficient. View full abstract»

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  • A new method for recognizing point targets

    Page(s): 16 - 20
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    An information fusion method based on the combination of artificial neural networks (ANN) and Dempster-Shafer's evidence theory to identify point targets is introduced in this paper. Two kinds of targets fly together in high space from far away, so that each of them occupies only one pixel in the image obtained by the detector and has not any shape characteristics. These two targets are supposed to have identical motion and visible characteristics but different construction, so the infrared characteristics is the only characteristics available. Six and twelve infrared features are adopted, respectively. A BP networks is used to identify these targets at first, then an information fusion method. It is found that the later has a much higher identification rate. View full abstract»

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  • Using the method of maximizing deviation to make decision for multiindices

    Page(s): 21 - 26
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    This paper takes the synthesizing evaluation about industrial economic benefits by examples and proposes a new method named maximizing deviation method for multiindices decision. The new method can automatically determine the weight coefficients among the multiindices and also can obtain the exact and reliable evaluation results without subjectivity. View full abstract»

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  • Forecasting practice from Box-Cox transformation models

    Page(s): 27 - 33
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    In this paper, forecasting analysis to Box-Cox transformation models with a practical example is considered. Based on chosen generalized functional form, variables influencing passenger are selected by statistic mechanism, not just by subjective judgment or dependent on certain specified model, and forecasting models are constructed. Comparing with typical linear regression forecasting models, nonlinear forecasting models are more effective and precise. Based on collecting data and final forecasting models, forecasting results are obtained and forecasting errors are analyzed. Finally, some helpful conclusions can be drawn from this study. View full abstract»

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  • Knowledge-based multifaceted modeling methodology for open complex giant systems

    Page(s): 34 - 42
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    In this paper, the structure characteristics of open complex giant systems are concretely analysed in depth, thus the view and its significance to support the meta-synthesis engineering with manifold knowledge models are clarified. Furthermore, the knowledge-based multifaceted modeling methodology for open complex giant systems is emphatically studied. The major points are as follows: (l) nonlinear mechanism and general information partition law; (2) from the symmetry and similarity to the acquisition of construction knowledge; (3) structures for hierarchical and nonhierarchical organizations; (4) the integration of manifold knowledge models; (5) the methodology of knowledge-based multifaceted modeling. View full abstract»

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  • Identification of subset autoregressive model using simulated annealing

    Page(s): 43 - 50
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    This paper deals with identification of subset autoregressive time series model. A simulated annealing based on approach for determining the optimal subset of regression terms included in the subset autogressive model is introduced. Numerical examples are given to show the effectiveness of the proposed algorithm. View full abstract»

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  • Parallel algorithm case study using virtual machine

    Page(s): 51 - 59
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    This paper takes the Sobel operator as example to study parallel sequential algorithm onto a memory-sharing multiprocessor by using a virtual machine. Several different parallel algorithms using function decomposition and/or data decomposition methods are compared and their performances are analyzed in terms of processor utilization, data traffic, shared memory access, and synchronization overhead. The analysis is validated through a simulation experiment on the virtual machine of 64 parallel processors. Conclusions are presented at the end of this paper. View full abstract»

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  • Visualized user interface for decision support system

    Page(s): 60 - 64
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (647 KB)  

    To work efficiently with DSS, most users need assistance in representation conversion, i.e., translating the specific outcome from the DSS into the universal language of visual. In generally, it is much easier to understand the results from the DSS if they are translated into charts, maps, and other scientific displays, because visualization exploits human natural ability to recognize and understand visual pattern. In this paper we discuss the concept of visualization for DSS. AniGraftool, a software system, is introduced as an example of Visualized User Interface for DSS. View full abstract»

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  • Research into freedom surface modeling system of double Beta spline in space

    Page(s): 65 - 73
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    In this paper, we present the double Beta spline curved surface which is controlled by double parameters including the algorithm principles, the treatment of boundary conditions, the alternation of projection, the algorithms of elimination hiddle line, the process to display and the primiples to produce the shaded curved surface. Based on all the above, a freedom surface modeling system (FSMS) is designed and some examples developed on FSMS are verified and analyzed. View full abstract»

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  • The exact limits of structural reliability for normal stress and normal strength

    Page(s): 74 - 81
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    Under the condition of normal strength and stress with unknown distribution parameters but getting a completed sample respectively, a comparison among the errors of some kinds of approximate limits for structural reliability has been made in this paper, basing on the exact limits presented. All results in this paper can be used with condition logical-normal distribution conveniently. View full abstract»

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Aims & Scope

Journal of Systems Engineering and Electronics reports the latest developments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas.

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Editor-in-Chief
Professor Rong Shi
Journal of Systems Engineering and Electronics