• Title/Summary/Keyword: simple mixed

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The Study on the Oxidative Stability of Mixed Rapeseed oil with Palm oil (팜유 혼합유채유의 산화안정성에 관한 연구)

  • 현영희;안명수
    • Korean journal of food and cookery science
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    • v.9 no.4
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    • pp.317-322
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    • 1993
  • Two kinds of simple and interesterfying mixed rapeseed oil were prepared according to add 30%, 50% and 70% of coconut and palm oil, then the physicochemical propecties such as the tedency of oxidation, foaming activity were Investigated. The initial AV and POV of interesterifyung mixed rape-seed oils were higher than those of simple mixed oils, but the tendencies of oxidation were similar. The intial value of IV interesterfied rapeseed oils was added in simple mixed rapeseed oil, Induction period were increased about 2.4~4 times. Induction period of intereterifyng mixed oils added palm ell increased about 2~3.2 times. While the foaming Buantity of interesterifing mixed rapeseed oils with palm oil were lower about 28~40% than those of the simple mixed rapeseed oils.

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A Simple Mixed-Based Approach for Thin-Walled Composite Blades with Two-Cell Sections

  • Jung Sung Nam;Park Il-Ju
    • Journal of Mechanical Science and Technology
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    • v.19 no.11
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    • pp.2016-2024
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    • 2005
  • In this work, a mixed beam approach that combines both the stiffness and the flexibility methods has been performed to analyze the coupled composite blades with closed, two-cell cross-sections. The Reissner's semi-complementary energy functional is used to derive the beam force-displacement relations. Only the membrane part of the shell wall is taken into account to make the analysis simple and also to deliver a clear picture of the mixed method. All the cross section stiffness coefficients as well as the distribution of shear across the section are evaluated in a closed-form through the beam formulation. The theory is validated against experimental test data, detailed finite element analysis results, and other analytical results for coupled composite blades with a two-cell airfoil section. Despite the simple kinematic model adopted in the theory, an accuracy comparable to that of two-dimensional finite element analysis has been obtained for cases considered in this study.

Effect of Tensile Strain on $I_c$ Degradation Characteristics In Bent Externally Reinforced Bi-2223 Superconducting Tapes (굽힘상태의 외부보강한 Bi-2223 초전도테이프에서 임계전류 열화특성에 미치는 인장변형률의 영향)

  • 신형섭;김기현;오상수;하동우
    • Progress in Superconductivity and Cryogenics
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    • v.6 no.1
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    • pp.6-11
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    • 2004
  • The influences of mixed strain mode of bending-tension on the critical current. Ic in externally reinforced Bi-2223 tapes and their interaction were investigated in this study. A test fixture which providing a mixed deformation mode of bending-tension to HTS tapes has been newly devised. When the total strain induced in the tape in the mixed strain mode was expressed by the superposition of the bending and tensile strains the irreversible strain for the critical current degradation of Bi-2223 tapes increased, as compared with the simple bending mode case. The $I_c$ degradation at the region exceeding the irreversible strain showed a medium between the simple bending case and the simple tension case. As the initial bending strain imparted increased , namely as the diameter of mandrel adopted decreased. the apparent irreversible strain in Bi-2223 tapes increased . but the increment became smaller As a result. it can be found that the tension to be applied to bent Bi-2223 tapes during cabling should be smaller. as the mandrel diameter becomes smaller.

Tumbling Dynamics of Rod-like and Semi-flexible Polymers in Simple Shear and Mixed Flows

  • Lee, Joo-Sung;Kim, Ju-Min
    • Macromolecular Research
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    • v.17 no.10
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    • pp.807-812
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    • 2009
  • In this work, we focus on the tumbling dynamics of rod-like and semi-flexible polymers in mixed flows, which vary from simple shear to pure rotation. By employing a bead-rod model, the tumbling pathways and periods are examined with a focus on the angular distribution of their orientation. Under the mixed flows, the tumbling dynamics agreed well with earlier studies and confirmed the predicted scaling laws. We found that the angular distribution deviates from that of shear flow as the flow type approaches pure rotation. Finally, we investigated the angular distribution of $\lambda$-DNA in a shear flow and found that the present numerical simulations were in quantitative agreement with the previous experimental data.

AN EFFICIENT IMPLEMENTATION OF BDM MIXED METHODS FOR SECOND ORDER ELLIPTIC PROBLEMS

  • Kim, J.H.
    • Journal of the Korean Society for Industrial and Applied Mathematics
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    • v.7 no.2
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    • pp.95-111
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    • 2003
  • BDM mixed methods are obtained for a good approximation of velocity for flow equations. In this paper, we study an implementation issue of solving the algebraic system arising from the BDM mixed finite elements. First we discuss post-processing based on the use of Lagrange multipliers to enforce interelement continuity. Furthermore, we establish an equivalence between given mixed methods and projection finite element methods developed by Chen. Finally, we present the implementation of the first order BDM on rectangular grids and show it is as simple as solving the pressure equation.

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A MATRIX FORMULATION OF THE MIXED TYPE LINEAR VOLTERRA-FREDHOLM INTEGRAL EQUATIONS

  • Fazeli, S.;Shahmorad, S.
    • Journal of applied mathematics & informatics
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    • v.29 no.5_6
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    • pp.1409-1420
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    • 2011
  • In this paper we present an operational method for solving linear Volterra-Fredholm integral equations (VFIE). The method is con- structed based on three matrices with simple structures which lead to a simple and high accurate algorithm. We also present an error estimation and demonstrate accuracy of the method by numerical examples.

Misleading Confidence Interval for Sum of Variances Calculated by PROC MIXED of SAS (PROC MIXED가 제시하는 분산의 합의 신뢰구간의 문제점)

  • 박동준
    • The Korean Journal of Applied Statistics
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    • v.17 no.1
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    • pp.145-151
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    • 2004
  • PROC MIXED fits a variety of mixed models to data and enables one to use these fitted models to make statistical inferences about the data. However, the simulation study in this article shows that PROC MIXED using REML estimators provides one with a confidence interval, that does not keep the stated confidence coefficients, on sums of two variance components in the simple regression model with unbalanced nested error structure which is a mixed model.

Improved Algorithm for Case-Deletion Diagnostic in Mixed Linear Models

  • Lee, Jang-Teak
    • Communications for Statistical Applications and Methods
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    • v.7 no.3
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    • pp.677-686
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    • 2000
  • Outliers may occur with respect to any of the random components in mixed linear models. We develop a use of simple, inexpensive updating formulas to consider the effect of case-deletion for mixed linear models. The method described here requires inversions of an n x n matrix, where n is the number of nonempty cells. A numerical example illustrates the use of computational formulas.

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A Study on the Correlationship between Spatial Structure and Shop Composition in Mixed-Use Facilities - Focused on the Typological Analysis about Lower Part of the Facilities Built After the Year 2000 - (복합상업시설 실내 공간구조와 매장구성 성향간 상관성 분석 - 2000년대 건립사례 저층부의 유형학적 분석을 중심으로 -)

  • Hyun, Chang-Yong
    • Korean Institute of Interior Design Journal
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    • v.26 no.6
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    • pp.62-70
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    • 2017
  • This study has a purpose that definitize correlationship of spatial structure and sales strategies in mixed-use complexes which established in Korea since year 2000. For this purpose, this study tries to analysis spatial structure of mixed-use facilities through space syntax theory and makes an typological categorization based on their space composition. As a result of categorization, Korean mixed-use facilities can be classed as three types. First type is integrated stacking type. Second one is parallel connecting type. Third type is room to room type. According to differences between categories, their spatial structures show different meaning with different sales strategies. Integrated stacking type sales luxury brands and expensive stuffs and it also has deep and complicated structure. That means theses spaces usually make a strategy of exclusion. Parallel connecting type sales special categories and it also has shallow and easy spatial structure. That means these facilities want to make a smooth connection between apposed volumes. Room to room type sales cheap and fancy objects and it also has simple and shallow structure. That means simple spatial structure can be lead contact customer to stuffs. These results mean spatial structure have a effect on design of sales space.

A Simple Implementation of Dynamical Memory Allocation in Old-fashioned Singleton's Mixed-radix Fast Fourier Transformation Code (구식 싱글턴 혼합기수 고속푸리에변환 코드에 대한 간단한 동적메모리 할당방법 프로그래밍)

  • Kim, In-Gee
    • Journal of the Korean Magnetics Society
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    • v.22 no.2
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    • pp.33-36
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    • 2012
  • We propose a simple prescription for resolving the general-$N$ problem existing in the old-fashioned mixed-radix fast Fourier transformation FORTRAN subroutine by Singleton in 1968. After a brief investigation on the problem, we discuss our prescription with the worst case analysis within the dynamical allocation. The analysis reveals that our implementation is superior, at least for multi-variate data set, than previously proposed data copying methods.