• Title/Summary/Keyword: Taylor

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Solute Transport in Rock Fractures

  • Yeo, In-Wook
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2001.04a
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    • pp.89-92
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    • 2001
  • This study aims at investigating the relationship between dispersion coefficient ratio to molecular diffusion coefficient (D$_{l}$ /D$_{m}$) and Peclet number (Pe) for multi-solute system in non-Darcian flow regime. Existing understanding on solute dispersion is primarily derived from one-solute system in Darcian flow regime. We found that solute dispersion in rock fractures can be characterized by the mechanism of both macrodispersion and Taylor dispersion, even for non-Darcian f]ow domain. For the Darcian flow regime even different solutes lead to the same D$_{l}$ /D$_{m}$ at same Pe. However, as the flow becomes non-Darcian, solute with a higher molecular diffusion coefficient result in higher D$_{l}$ /D$_{m}$ at tile same Pe than that with a lower diffusion coefficient.cient.

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Comparison of Upper and Lower Limb Functional Ability Depends on Dominants (우세측에 따른 상지와 하지의 기능 비교)

  • Lee, Sun-Myung
    • Journal of Korean Clinical Health Science
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    • v.4 no.3
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    • pp.622-633
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    • 2016
  • Purpose. The purpose of this study was compared of left dominant and the right dominant hands about coordination. Methods. The participants were 30 occupational therapy students in M university in Changwon, from April 28th 2015 to May 1. The test tools were Jebson-Taylor Hand Function Test, Hand Strength & Pinch, Grooved Pegboard Test, Box & Block and Balance Test. Results. Right dominant hand was higher than left dominant in hand grip and dexterity, hand manipulation skills. And one leg standing and toe standing were higher left foot than right foot dominant. Conclusion. Most of all evaluation items showed a better result right dominant hand than left dominant. But shows that there is no functional difference between left-hand dominant than right-hand. So left-hand dominant coordination was evaluated by a better than right-handed.

Simulation of industrial multiphase flows (공학적 관점에서의 다상유동 문제의 수치해석)

  • Han aehoon;Alajbegovic Ales;Seo Hyeoncheol;Blahowsky Peter
    • Proceedings of the KSME Conference
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    • 2002.08a
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    • pp.389-392
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    • 2002
  • In many industrial applications, multiphase flow analysis is the norm rather than an exception as compared to more-conventional single-phase investigation. This paper describes the implementation of the multiphase flow simulation capability in the general purpose CFD software AVL FIRE/SWIFT. The governing equations are discretized based on a finite volume method (FVM) suitable fur very complex geometry, The pressure field is obtained using the SIMPLE algorithm. Depending on the characteristics of the multiphase flow to be examined, the user can choose either the two-fluid model or an explicit interface-tracking model based on the Volume-of-Fluid approach. For truly 'multi'-phase flow problems, it is also possible to apply a hybrid model where certain phases are explicitly tracked while the other phases are handled by the two fluid model. In order to demonstrate the capability of the method, applications to the Taylor bubble flow simulations are presented.

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Numerical Simulation of Mixing and Combustion in a Normal Injection of the Scramjet (초음속 연소기에서의 혼합과 연소현상에 관한 수치해석)

  • Moon, Su-Yeon;Lee, Choong-Won;Sohn, Chang-Hyun
    • Proceedings of the KSME Conference
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    • 2001.11b
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    • pp.475-480
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    • 2001
  • The flowfield of transverse jet in a supersonic air stream subjected to shock wave turbulent boundary layer interactions is simulated numerically by Generalized Taylor Galerkin(GTG) finite element methods. Effects of turbulence are taken into account with a two-equation $(k-\varepsilon)$ model with a compressibility correction. Injection pressures and slot widths are varied in the present study. Pressure, separation extents, and penetration heights are compared with experimental data. Favorable comparisons with experimental measurements are demonstrated.

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바지락, Ruditapes philippinarum의 산소농도에 따른 SFG의 변화

  • Shin, Yoon-Kyung;Kim, Yoon;Jung, Eui-Young;Heo, Sung-Bum
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2000.10a
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    • pp.250-251
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    • 2000
  • 환경내 산소의 고갈은 패각의 폐쇄를 야기시키며, 생리적 반응은 종에 따라 차이가 있으나, 대체로 저산소에 대한 생리적 보상 기작으로서 수류의 pumping과 ventilation 그리고 혈중내 산소수송능력을 증가시킨다(Herreid, 1980). 산소가 감소된 수괴에서 대사를 조절할 수 있는 능력은 서식지에 따라 여러 종류의 패류에 대하여 잘 알려져 있으며(Bayne, 1967; Hamwi and Haskin, 1967; Brand and Roberts, 1973; Taylor and Brand, 1975; Shumway, 1983; Widdows and Wang 1991; Sobral and Widdows, 1997), 이와 같은 연구들은 산소소비율의 변화가 환경내 산소감소에 대한 대사반응으로서 노출시간과 개체크기, 먹이이용 및 생식주기와 같은 생물학적 요인에 영향을 받는다고 보고하였다(Taylor and Brands, 1975; Widdows and Wang and Wang, 1991). (중략)

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Avoiding Hybrid Clauses Pitfalls: An Applied Framework

  • Lee, Arvin;Ma, Maggie
    • Journal of Arbitration Studies
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    • v.25 no.3
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    • pp.3-31
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    • 2015
  • This paper sets out a multi-dimensional approach that parties drafting a "hybrid clause" for their arbitration agreement can adopt, for purposes of maximizing enforceability, taking into account the multi-jurisdictional interplay between the seat Court, the governing law and the enforcement Court(s), as well as mandatory rules that can be present in the lex arbitrii, the governing law, and/or the law of the enforcement for a. This paper draws on both the co-authors' practice experience, as well as first principles of party autonomy in light of mandatory rules, based predominantly on the scholarship of Briggs and Nygh.

Estimation for the Rayleigh distribution based on Type I hybrid censored sample

  • Kwon, Byongwon;Lee, Kyeongjun;Cho, Youngseuk
    • Journal of the Korean Data and Information Science Society
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    • v.25 no.2
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    • pp.431-438
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    • 2014
  • Type I hybrid censoring scheme is the combination of the Type I and Type II censoring scheme introduced by Epstein (1954). Epstein considered a hybrid censoring sampling scheme in which the life testing experiment is terminated at a random time $T^*$ which is the time that happens rst among the following two; time of the kth unit is observed or time of the experiment length set in advance. The likelihood function of this scheme from the Rayleigh distribution cannot be solved in a explicit solution and thus we approximate the function by the Taylor series expansion. In this process, we propose four dierent methods of expansion skill.

Variations and Series Expansions of the Symbolic Multiple-Valued Logic functions (기호 다치 논리함수와 그 변화 및 전개)

  • 이성우;정환묵
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.20 no.5
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    • pp.1-7
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    • 1983
  • Generally, multiple-valued logic algebra is based on the number system of modulo-M. In this paper, characters a, b, c‥… each of them represents the independent state, are regarded as the elements of the symbolic multiple-valued logic. By using the set theory, the symbolic multiple - valued logic and their functions are defined. And Varation for the symbolic logic function due to the variation of a variable and their properties are suggested and analized. With these variations, the MacLaurin's and Taylor's Series expansions of the symbolic logic functions are proposed and proved.

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Double Diffusive Convection of a Stratified Fluid in a Rotating Annulus Due to Lateral Heating (환형용기내 성층화된 유체의 회전효과에 따른 이중확산대류에 관한 실험적 연구)

  • 강신형;전창덕;이진호
    • Transactions of the Korean Society of Mechanical Engineers
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    • v.19 no.7
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    • pp.1709-1719
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    • 1995
  • The primary objective of the paper is to obtain the basic information of the natural convection of a stratified with various parametric conditions related to rotating speed, temperature and concentration gradient. For the purpose of it, experiments are performed in a stably stratified salt-water solution with lateral heating in a stationary or rotating annulus. The experiment covers the ranges of Ar=2, Le=100, R $a_{\ta}$=2 10$^{5}$ and Ta=0, 10$^{5}$ - 2.5*10$^{8}$ . Many interesting flow phenomena are observed and rotation effects are examined. Particularly as Taylor number increases (rotation increases) at a given R $a_{\ta}$, the generation of rolls at hot wall is inhibited and the formation and merging process of layers are delayed.

Development of a Web-based Analysis Program for Reliability Assessment of Machine Tools (공작 기계의 신뢰성 평가를 위한 웹 기반 해석 프로그램 개발)

  • 강태한;김봉석;이수훈;송준엽;강재훈
    • Proceedings of the Korean Society of Machine Tool Engineers Conference
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    • 2004.10a
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    • pp.369-374
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    • 2004
  • Web-based analysis programs for reliability assessment of machine tools were developed in this study. First, the reliability data analysis program was developed to search for failure rate using failure data and reliability test data of mechanical part. Second, failure mode analysis was developed through performance tests like circular movement test vibration test for machine tools. This analysis program shows correlation between failure mode and performance test result. Third, tool life was predicted by correlation between flank wear and cutting time, using the extended Taylor tool life equation in turning data and the equivalently converted equation in order to apply ball endmill data to Taylor tool life equation in milling data. All the information related to input and result data can be stored in theses programs.

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