• Title/Summary/Keyword: New combination

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Design Centering by Genetic Algorithm and Coarse Simulation

  • Jinkoo Lee
    • Korean Journal of Computational Design and Engineering
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    • v.2 no.4
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    • pp.215-221
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    • 1997
  • A new approach in solving design centering problem is presented. Like most stochastic optimization problems, optimal design centering problems have intrinsic difficulties in multivariate intergration of probability density functions. In order to avoid to avoid those difficulties, genetic algorithm and very coarse Monte Carlo simulation are used in this research. The new algorithm performs robustly while producing improved yields. This result implies that the combination of robust optimization methods and approximated simulation schemes would give promising ways for many stochastic optimizations which are inappropriate for mathematical programming.

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A NEW SUBCLASS OF MEROMORPHIC FUNCTIONS DEFINED BY HILBERT SPACE OPERATOR

  • AKGUL, Arzu
    • Honam Mathematical Journal
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    • v.38 no.3
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    • pp.495-506
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    • 2016
  • In this paper, we introduce and investigate a new subclass of meromorphic functions associated with a certain integral operator on Hilbert space. For this class, we obtain several properties like the coefficient inequality, extreme points, radii of close-to-convexity, starlikeness and meromorphically convexity and integral transformation. Further, it is shown that this class is closed under convex linear combination.

A new computational approach to stability analysis of linguistic fuzzy control systems - Part 2: Stability Analysis (컴퓨터 연산을 통한 언어형 퍼지 제어 시스템의 새로운 안정도 해석: 2부 - 안정도 해석)

  • 김은태;박순형;박민용
    • Proceedings of the IEEK Conference
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    • 2001.06c
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    • pp.21-24
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    • 2001
  • In this paper, we Propose a new computational approach to stability analysis of the linguistic control system. The FLC is assumed to be modeled as a combination of affine system. Stability is tested via the LMI. Computer simulation result is given to illustrate the validity of the suggested methodology.

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A new computational approach to stability analysis of linguistic fuzzy control systems - Part l: Affine modeling of fuzzy system (컴퓨터 연산을 통한 언어형 퍼지 제어 시스템의 새로운 안정도 해석: 1부 - 퍼지 시스템의 어핀 모델링)

  • 김은태;박순형;박민용
    • Proceedings of the IEEK Conference
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    • 2001.06c
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    • pp.169-172
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    • 2001
  • In recent years, many studies regarding the modeling of fuzzy system have been conducted. In this paper, a new computational approach to modeling of linguistic fuzzy system is proposed The fuzzy system is modeled as a combination of affine systems, The proposed method can be used in a rigorous stability analysis of fuzzy system including the linguistic fuzzy controller.

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The Ordering of Hitting Times of Multivariate Processes

  • Baek, Jong-Il
    • Journal of the Korean Statistical Society
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    • v.25 no.4
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    • pp.545-556
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    • 1996
  • In this paper, we introduce a new concept of partial ordering which permits us to compare pairs of the dependence structures of a new hitting times for POD multivariate vector process of interest as to their degree of POD-ness. We show that POD ordering is closed under convolution, limit in distribution, compound distribution, mixture of a certain type and convex combination. Finally, we present several examples of POD ordering processes.

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Two Harpacticoid Species of Genera Nitokra and Ameira (Harpacticoida: Ameiridae) from Brackish Waters in Korea

  • Chang, Cheon-Young
    • Animal cells and systems
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    • v.11 no.2
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    • pp.247-253
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    • 2007
  • A new species of Nitokra and Ameira parvula (Claus) belonging to the family Ameiridae are recorded from brackish waters in South Korea. Nitokra koreanus n. sp. most resembles N. spinipes and N. pietschmanni, however, it is characteristic in having the character combination of ellipsoidal P5 exopod and very short P1 enp 1. Ameira parvula is reported for the first time from the Northwestern Pacific. Description of the new species and the taxonomic accounts of both species are presented.

The New Labour Government Policy and Preschool Education in England

  • Kwon Young-Ihm
    • International Journal of Human Ecology
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    • v.3 no.1
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    • pp.21-36
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    • 2002
  • Recently, early childhood education in England has experienced a significant level of government intervention including reforms for improving it. This study examines to what extent new Labour government initiatives impact preschool education in England and how effectively the English government implements its preschool education policies. This empirical study uses a combination of methods, including documentary analysis, questionnaire, and observation. Findings show that recent English government policy, especially the introduction of a national preschool curriculum framework combined with an inspection process and funding mechanism, appears to have had a strong influence on preschool practices.

A New Reduced-Sized Lumped Distributed Power Divider Using The Shorted Coupled-line Pair (끝이 단락된 결합선로를 이용한 전력 분배기의 초소형화)

  • Kang, In-Ho;Choi, Jae-Kyo
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • 2003.11a
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    • pp.283-287
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    • 2003
  • A new method to miniaturize ${\lambda}/4$ transmission line of power divider is proposed. The method utilizes simple combination of the shorted coupled-line pair instead of the transmission line with very high impedance and shunt lumped capacitors. The length of ${\lambda}/4$ transmission line of power divider is about 16% over the conventional power divider at 1 GHz.

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Some Properties of Harmonic Functions Defined by Convolution

  • Dixit, Kaushal Kishor;Porwal, Saurabh
    • Kyungpook Mathematical Journal
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    • v.49 no.4
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    • pp.751-761
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    • 2009
  • In this paper, we introduce and study a comprehensive family of harmonic univalent functions which contains various well-known classes of harmonic univalent functions as well as many new ones. Also, we improve some results obtained by Frasin [3] and obtain coefficient bounds, distortion bounds and extreme points, convolution conditions and convex combination are also determined for functions in this family. It is worth mentioning that many of our results are either extensions or new approaches to those corresponding previously known results.

A new Customer Segmentation Method for the Prediction of Customer Buying Behavior (고객 구매 행동 예측을 위한 새로운 고객 세분화 방안)

  • 이장희
    • Proceedings of the Korean Society for Quality Management Conference
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    • 2004.04a
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    • pp.573-575
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    • 2004
  • This study presents a new customer segmentation method based on features that can predict the customer's buying behavior. In this method, we consider all variables that can affect the customer's buying behavior including demographics, psychographics, technographics, transaction pattern-related variables, etc. We define several features which are the combination of variables with the interaction effect by using C5.0, use SOM (Self-Organizing Map) neural networks in odor to extract the feature's patterns and classify, and then make features' rules using C5.0 far the prediction of customer buying behavior

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