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A fuzzy-logic controller for a differential-drive mobile robot (이동로봇을 위한 퍼지로직 제어기)

  • 박영민;김대영;한상완;홍석교
    • 제어로봇시스템학회:학술대회논문집
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    • 1997.10a
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    • pp.532-535
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    • 1997
  • This paper describes the design of a fuzzy-logic controller for a differential-drive mobile robots. This controller uses absolute position information to modify control parameters to compensate the orientation error. CC-Control method is compensated for the internal error by wheel encoders and the fuzzy-logic control provides compensation for external errors. The validities of the proposed scheme is evaluated using simulation.

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EMPLOYING GENERALIZED (𝜓, 𝜃, 𝜑)-CONTRACTION ON PARTIALLY ORDERED FUZZY METRIC SPACES WITH APPLICATIONS

  • Handa, Amrish
    • The Pure and Applied Mathematics
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    • v.27 no.4
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    • pp.207-229
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    • 2020
  • We establish fixed point and multidimensional fixed point results satisfying generalized (𝜓, 𝜃, 𝜑)-contraction on partially ordered non-Archimedean fuzzy metric spaces. By using this result we obtain the solution for periodic boundary value problems and give an example to show the degree of validity of our hypothesis. Our results generalize, extend and modify several well-known results in the literature.

A CONVERGENCE THEOREM ON QUASI-ϕ-NONEXPANSIVE MAPPINGS

  • Kang, Shin Min;Cho, Sun Young;Kwun, Young Chel;Qin, Xiaolong
    • Journal of the Chungcheong Mathematical Society
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    • v.23 no.1
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    • pp.73-82
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    • 2010
  • In an infinite-dimensional Hilbert space, the normal Mann iteration has only weak convergence, in general, even for nonexpansive mappings. The purpose of this paper is to modify the normal Mann iteration to have strong convergence for a closed quasi-$\phi$-nonexpansive mapping in the framework of Banach spaces.

A Still Image Compression Algorithm based on JPEG Systems (JPEG 시스템을 기반으로 한 정지 영상 압축 알고리즘)

  • 이철원;임인칠
    • Journal of the Korean Institute of Telematics and Electronics B
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    • v.31B no.7
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    • pp.9-15
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    • 1994
  • This paper proposes a image compression algorithm which stores and transmites image data efficiently. The proposed compression algorithm modify enhances compression rate by modified ZIG-ZAG Scanning in JPEG standard algorithm which is based on 2D-DCT. And the up-compatible method of proposed algorithm can solve compatible problem with JPEG that is cased by modified ZIG-ZAG Scanning. And this paper presentes a block diagram of hardware for real-time processing.

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A Formula for Computing the Autocorrelations of the AR Process

  • Cho, Sung-Ho
    • The Journal of the Acoustical Society of Korea
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    • v.15 no.2E
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    • pp.4-7
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    • 1996
  • In this paper, we propose a formula to compute the exact autocorrelations of the autoregressive (AR) process. For an arbitrary value of N, we first review the Yule-Walker equation and some basic properties of the AR model. We then modify the Yule-Walker equation to construct a new system of N+1 linear equations that can be used to solve for the N+1 autocorrelation coefficients for lags 0, 1, …, N, provided that the AR parameters of order N and the power of the white noise of the AR process are given.

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COINCIDENCE THEOREMS FOR COMPARABLE GENERALIZED NON LINEAR CONTRACTIONS IN ORDERED PARTIAL METRIC SPACES

  • Dimri, Ramesh Chandra;Prasad, Gopi
    • Communications of the Korean Mathematical Society
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    • v.32 no.2
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    • pp.375-387
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    • 2017
  • In this paper, we prove some coincidence point theorems involving ${\varphi}-contraction$ in ordered partial metric spaces. We also extend newly introduced notion of g-comparability of a pair of maps for linear contraction in ordered metric spaces to non-linear contraction in ordered partial metric spaces. Thus, our results extend, modify and generalize some recent well known coincidence point theorems of ordered metric spaces.

Development of Pyrolysis Equipment to Depolymerize the Waste Tire (폐타이어의 열분해장치 개발)

  • Kim, Tae-Kyu;Yang, Sang-Min
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.31 no.12
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    • pp.1208-1213
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    • 2007
  • Some structural problems and temperature difference of the pyrolysis equipment were improved by using the structure analysis and the optimal design of torch. The pyrolysis equipment developed in this study is expected to the excellent pyrolysis effect. To modify user-friendly the dimension of a part, we developed the feature modeling system that all of the related parts automatically change applying to the three-dimensional modeling method.

A Study on Daemon Process Protection System Using Linux Based Resource Access Control Module(LPM) (리눅스 기반 자원 접근제어 모듈(LPM)을 이용한 데몬 프로세스 보호 시스템에 관한 연구)

  • 나형준;이병호
    • Proceedings of the IEEK Conference
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    • 2003.07d
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    • pp.1593-1596
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    • 2003
  • In this paper, we propose mechanism of system call control, monitor, and manage by user level, and for this purpose we propose the mechanism using system call intercept and a logging system. Proposed mechanism is more convenient in that there is no necessity for modification of linux source code, so general users can actively apply and modify. As an application model for the mechanism, we can explain for the Daemon Process Protection System which can have a complete control on system daemon processes.

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Analysis of Quality Loss Function(QLF) of Taguchi (다구찌(田口)의 품질손실함수에 대한 분석)

  • 이상복
    • Journal of Korean Society for Quality Management
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    • v.25 no.3
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    • pp.119-130
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    • 1997
  • In this paper, we analyze quality loss function(QLF) of Taguchi. Taguchi method of QLF gives more advanced measure process capability than classic capacity(i.e. Cp). We first discuss of QLF and Cp and give one good example of QLF. Because of simplicity of QLF, it is not good fit to a, pp.y in the real field. We suggest interval quantity-loss cost function and total loss cost(TLC) which modify QLF. Also we give one example which can be obtained in the real field.

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