• 제목/요약/키워드: Moment

검색결과 8,365건 처리시간 0.037초

정모멘트 철근의 정착 (Development of Positive Moment Reinforcement)

  • 홍성걸
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1998년도 봄 학술발표회논문집(II)
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    • pp.421-426
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    • 1998
  • Current code provisions for the development of positive moment reinforcement is reviewed and criticized in this paper. Both the flexural bond and development length concepts are neccesary to consider anchorage requirement of reinforcement at beam ends. The curent design codes show unconservatism for the detailing of reinforcement at the beam ends. This study proposes a new design formula for the development of positive moment reinforcement.

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신뢰성 이론을 이용한 고강도콘크리트 구조물의 축력-모멘트관계에 있어서의 해석방법에 대한 평가 (The Estimation of Analytical Method for Axial Force-Moment Relationships of High-Strength Concrete Structures using Reliability Theory)

  • 최광진;장일영;송재호;홍원기
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1998년도 봄 학술발표회논문집(II)
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    • pp.447-454
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    • 1998
  • The main object of the study is that axial force-moment relationships for high strength concrete structures using reliability theory(Linear statstical method, Monte Carlo Simulation) including probability conception. And mean stress factors and centroid factors proposed to high strength concrete structures using reliability theory(Linear statstical method, Monte Carlo Simulation). Finally, The established experimental data for axial force-moment relationships are compared to the analytical data(data for Linear statstical method and Monte Carlo Simulation) for axial force-moment relationships in this analytical method.

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프리스트레스트 콘크리트 연속보의 극한모멘트계산을 위한 구조해석 (Structural Analysis of Prestressed Concrete Continuous Beams for Ultimate Moment Calcalation)

  • 이재훈
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1994년도 봄 학술발표회 논문집
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    • pp.7-12
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    • 1994
  • In structural analysis of prestressed concrete continuous flexural mambers, secondary effects produced by tendon forces should be reasonably estimated. The secondary moment at service load stags is normally used for ultimate required moment caculation in strength design. This concept has to be reviewed when precise analysis is performed considering construction step, time dependent properties of concrete and tendon. An ultimate moment computation proposed, concept and structural behavior. The previously proposed procedure by other researcher and the proposed procedure are compared and reviewed for the currently constructed precast prestressed concrete bridge.

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MAXIMAL INEQUALITIES AND AN APPLICATION UNDER A WEAK DEPENDENCE

  • HWANG, EUNJU;SHIN, DONG WAN
    • 대한수학회지
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    • 제53권1호
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    • pp.57-72
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    • 2016
  • We establish maximal moment inequalities of partial sums under ${\psi}$-weak dependence, which has been proposed by Doukhan and Louhichi [P. Doukhan and S. Louhichi, A new weak dependence condition and application to moment inequality, Stochastic Process. Appl. 84 (1999), 313-342], to unify weak dependence such as mixing, association, Gaussian sequences and Bernoulli shifts. As an application of maximal moment inequalities, a functional central limit theorem is developed for linear processes with ${\psi}$-weakly dependent innovations.

ON STAR MOMENT SEQUENCE OF OPERATORS

  • Park, Sun-Hyun
    • 호남수학학술지
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    • 제29권4호
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    • pp.569-576
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    • 2007
  • Let $\cal{H}$ be a separable, infinite dimensional, complex Hilbert space. We call "an operator $\cal{T}$ acting on $\cal{H}$ has a star moment sequence supported on a set K" when there exist nonzero vectors u and v in $\cal{H}$ and a positive Borel measure ${\mu}$ such that <$T^{*j}T^ku$, v> = ${^\int\limits_{K}}\;{{\bar{z}}^j}\;{{\bar{z}}^k}\;d\mu$ for all j, $k\;\geq\;0$. We obtain a characterization to find a representing star moment measure and discuss some related properties.

Determination of the Magnetic Moment of $Cr_2O_3$ by a Proportional Relation

  • Kim, Yong-Jin;Kim , Jung Gi
    • Journal of Magnetics
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    • 제1권2호
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    • pp.55-56
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    • 1996
  • The effective magnetic moment of Cr$_2$O$_3$is determined by assuming that a proportional relation holds between its moment and the effective magnetic moment of hematite determined by the previous derived relaxation expression and the moments of Fe3+ ion and Cr3+ ion. The result obtained from the relation is found to be given by 0.10 in Bohr magneton which is in good agreement with the value obtained by use of the expression.

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모멘트법을 이용한 도파관 복사소자의 설계에 관한 연구 (A study on Design for Radiation Element of Slotted Waveguide by the Method of Moment)

  • 민경식;박세현;김동철;임학규
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2000년도 춘계종합학술대회
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    • pp.135-138
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    • 2000
  • This paper presents design for radiation element of slotted waveguide by the method of moment. The piecewise sinusoidal function as the basis function is used for the Moment Method. From the analytically results based on the Galerkin's moment method, frequency characteristics and radiation power is investigated for the design parameter such as the slot length, offset and angle. This paper also discusses that the radiation power is controled by the slot offset and angle. The thickness of the waveguide wall is also discusses in the analysis.

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신뢰성이론을 이용한 고강도콘크리트 구조물의 축력-모멘트관계에 관한 해석적인 연구 (The Analytical Study of Axial Force-Moment Relationships for High Strength Concrete Structures using Reliability Theory)

  • 최광진;홍원기;장일영;송재호
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 1997년도 가을 학술발표회 논문집
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    • pp.500-506
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    • 1997
  • The main object of the study is that axial force-moment relationships for high strength concrete structures using reliability theory probability conception. And mean stress factors and centroid factors proposed to high strength concrete structures using reliability theory. Finally, the established experimental data for axial force-moment relationships are compared to the analytical data for the axial force-moment relationships in this analytical method.

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정밀 공작기계용 리니어모터 모멘트의 해석 및 실험적 검증 (Analysis and Experimental Verification of Linear Motor Moment for Precision Machine Tools)

  • 조영택;조한욱;이승한
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2015년도 제46회 하계학술대회
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    • pp.884-885
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    • 2015
  • This paper presents the characteristic analysis and experiment of pitching moment in permanent magnet linear synchronous motor (PMLSM) for precision machine tools. In this paper, we define force characteristics of the moment and the moment analysis by the finite element method. Manufacture experiment and we will compare the results of finite element analysis and experimental results.

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