• 제목/요약/키워드: DER구조

검색결과 144건 처리시간 0.027초

독일어 운율구조에서 최소단어의 역할 (Die Rolle des minimalen Wortes $f\"{u}r$ die prosodische Struktur des Deutschen)

  • 유시택
    • 한국독어학회지:독어학
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    • 제5집
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    • pp.67-89
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    • 2002
  • Die meisten $W\"{o}rter$ im Deutschen, die zur lexikalichen Hauptkategorie $geh\"{o}ren,\;erf\"{u}llen$ die prosodischen Bedingungen, class sie ein phonologisches Wort bilden und class ein phonologisches Wort zumindest aus zwei Moren besteht. In dieser Arbeit wird gezeigt, welche Konsequenzen diese Constraints $f\"{u}r$ die prosodische Gestalt der deutschen $W\"{o}rter$ haben. Eine davon bezieht sich auf das $Ph\"{a}nomen$, das in der Literatur als 'minimales Wort' bekannt ist. Die distributionellen $Beschr\"{a}nkungen$ eines ungespannten kurzen Vokals im Deutschen sind darauf $Zur\"{u}ckzuf\"{u}hren$, class ein prosodisches Wort mindestens zwei Moren enthalten muss. Die Forderung nach einem minimalen Wort wirft aber die Frage, warum ein Stamm wie feige eine zweisilbige Struktur CVCV mit einer finalen Schwasilbe aufweisen, ein Stamm wie reif dagegen eine einsilbige Struktur eve. Allein die Forderung nach einem zweimorigen prosodischen Wort wurde auch eine ungrammatische Form wie feig $erf\"{u}llen$. Bei Formen wie feige ist festzustellen, dass das Constraint IDENT-IO [voiced] wichtiger als das Constraint ist, das einen einsilbigen Stamm verlangt. Eine Analyse, in der die finale Schwa-Silbe in einem CVCV-Stamm als ein stammbildendes Element oder Pseudosuffix aufgefasst wird, kann diese Interaktion zwischen Constraint nicht erfassen. Im Vergleich dazu zeigen die zweisilben Flexionsformen, bei denen Schwa-Silben als ein echtes Suffix fungieren, dass das Constraint 'Realisiere Morphem' nur dann verletzt werden kann, wenn es zur $Erf\"{u}llung\;des\;h\"{o}her$ rangierten Constraints OCP(nucleus) dient. Dieses Constraint ist seinerseits nur dann verletzbar, wenn damit das $h\"{o}here$ Constraint Coda-Cond erfullt werden kann.

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Analysis of Structural Reliability under Model and Statistical Uncertainties: a Bayesian Approach

  • Kiureghian, Armen-Der
    • Computational Structural Engineering : An International Journal
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    • 제1권2호
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    • pp.81-87
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    • 2001
  • A framework for reliability analysis of structural components and systems under conditions of statistical and model uncertainty is presented. The Bayesian parameter estimation method is used to derive the posterior distribution of model parameters reflecting epistemic uncertainties. Point, predictive and bound estimates of reliability accounting for parameter uncertainties are derived. The bounds estimates explicitly reflect the effect of epistemic uncertainties on the reliability measure. These developments are enhance-ments of second-moment uncertainty analysis methods developed by A. H-S. Ang and others three decades ago.

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탄소나노튜브로 둘러싸인 나노와이어 구조의 오실레이터 응용 (Application of Carbon Nanotube Encapsulating Nanowire)

  • 송영진
    • 반도체디스플레이기술학회지
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    • 제6권4호
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    • pp.1-4
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    • 2007
  • Carbon nanotube oscillators encapsulating copper nanowire were investigated by molecular dynamics simulations. The excess forces due to the carbon-carbon van der Waals interactions are higher than the excess force due to carbon-copper interactions. And the masses of copper atoms are higher than those of carbon atoms. So, the carbon atoms are easier accelerated than the copper atoms. When the encapsulated copper nanowire deforms the encapsulating nanotube, the frequency can not be estimated by the mass-frequency dependence in classical oscillation theory.

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해안구조물의 비용최적화 설계 Algorithm 개발

  • 강윤구;김종욱;이익효;유청노
    • 한국해안해양공학회:학술대회논문집
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    • 한국해안해양공학회 1991년도 정기학술강연회 발표논문 초록집
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    • pp.55-59
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    • 1991
  • 사석방파제 등의 해안구조물 설계에 규칙파를 대상으로 한 다수의 설계식이 제안되어 왔다(예를 들면 Hudson, 1959; C.E.R.C., 1984 등). 또한 최근에는 불규칙파를 대상으로 한 설계식이 제안되었고, 이에는 Ryu and Sawaragi(1986), Van der meer(1987)등의 식이 있다. 이들 설계식은 모두 결정론적 안정성 평가에 주안을 두고 있다.(중략)

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$n/p^+/p$구조를 이용한 FIPOS-SOI의 제조 (Fabrication of FIPOS-SOI Using $n/p^+/p$ Structure)

  • 양천순;이종현
    • 대한전자공학회논문지
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    • 제26권12호
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    • pp.2010-2015
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    • 1989
  • A SOI was fabricated by the FIPOS technique using n/p+/p silicon structure. Fabricated silicon island which has 3\ulcorner thickness and 100\ulcorner width was investigated by measuring van der Pauw resistivity, Hall mobility, dielectric breakdown voltage and leakage current. Hall mobility of the SOI was measured to be 300-500cm\ulcornerV.sec and its breakdown field was 1-2 MV/cm. The cross-sectional geometries of the SOI island were examined by SEM and optical microscope.

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TTP로 피복된 경사식구조물의 처오름높이 산정식: 사면경사 1:1.5 조건 (Empirical Formula for Wave Runup of Rubble-Mound Structure Covered by Tetrapods: 1:1.5 Slope Condition)

  • 이종인;배일로
    • 대한토목학회논문집
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    • 제35권4호
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    • pp.845-852
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    • 2015
  • 파랑의 처오름높이는 항만 및 호안구조물의 마루높이 산정에 있어 주요한 설계요소이다. 본 연구에서는 TTP로 피복된 경사식구조물을 대상으로 2차원 수리실험을 수행하였으며, 실험에 적용된 실험파는 불규칙파로서 구조물 toe 위치에서 비쇄파, 쇄파 및 쇄파된 파의 조건을 포함한다. 본 실험결과를 이용하여 사면경사 1:1.5인 경사식구조물의 처오름높이를 산정할 수 있는 경험식을 쇄파 유사성 매개변수를 이용하여 제안하였다. 그리고 본 실험결과는 기존 연구결과인 van der Meer and Stam(1992)의 결과와 비교하였다.

Frequency Window Method에 의한 Secondary 구조 시스템의 진동특성 (Frequency Window Method for the Vibration of Secondary Structural Systems)

  • 민경원
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 1991년도 춘계학술대회논문집; 한국해사기술연구소, 대전; 1 Jun. 1991
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    • pp.153-158
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    • 1991
  • Recently, demands on light weight, high strength, and low noise or vibration have led to the design of complicated structural systems. Although finite elements [1], mode synthesis [2], and statistical energy analysis [3] can be used to compute the dynamic response of such systems, the structural complexity has made the interpretation of the results of such analysis difficult. Many researchers in dynamic analysis have sought to further develop existing theories or develop alternate methods to obtain greater insight in the behavior of large massive primary systems (P systems) with connected light secondary systems (S systems). Some recent research includes work by Sackman and Kelly [4], Sackman et al.[5], Der Kiureghian et al.[6], and Igusa and Der Kiureghian [7-9] who have combined mode synthesis concepts, matrix algebraic theory, and perturbation methods for characterizing weakly-coupled structural systems. A major limitation of these works are that they are limited to lumped mass S systems. In this paper, the general ideas in the Refs.[4-9] are used to study continuous S systems and the method to reduce the complexity, studied in the works by Igusa, Achenbach, and Min [10,11], is developed into the frequency window method.

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수소결합에 따른 적외선 분광기의 측정과 구조 및 열역학적 성질 사이의 관계식 성립에 관한 Lippincott/Schroeder 포텐샬 함수의 활용 (The Use of the Lippincott/Schroeder Potential Function in Establishing Relationships between Infred Spectroscopic Measurements and Structural and Thermodynamic Properties of Hydrogen Bonds)

  • 박영훈
    • 공업화학
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    • 제4권2호
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    • pp.409-415
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    • 1993
  • Lippin cott/schroeder 포텐샬 함수는 O-H---O와 같은 수소결합 시스템에 응용되고, 좋은 데이터를 주기 위하여 약간 수정된다. 이 모델의 사용은 Van der Waals 반발력과 정전기적 상호작용을 표현하는 항들을 요구하며, 이들 항들은 평형조건으로부터 결정된다. 이 간단한 모델을 사용하므로서, 주파수이동과 수소결합 형성의 엔탈피 관계는 직선이 될 것으로 예상되며, 이것은 문헌에 있는 실험적 결과와 일치한다는 것을 보여준다.

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독일어에서 음운단어 (Phonologisches Wort im Deutschen)

  • 유시택
    • 한국독어학회지:독어학
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    • 제8집
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    • pp.1-23
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    • 2003
  • Im Deutschen wird generell einem Suffix zwei verschiedene prosodische Strukturen zugewiesen: ein konsonanteninitiales Suffix bildet sein eigenes phonologisches Wort, ein vokalinitiales Suffix dagegen nicht. $F\"{u}r$ diese Unterscheidung zwischen zwei Suffixklassen nennt man innerhalb einer regelbasierten Theorie zwei Kriterien: (i) Phonologisches Wort fungiert als $Dom\"{a}ne{\;}f\"{u}r$ die Silbifizierung und die Koordinationsreduktion, (ii) Konsonanteninitiale Suffixe $tr\"{a}gen$ einen Nebenakzent, $w\"{a}hrend$ einem vokalinitialen Suffix kein Akzent zugewiesen wird. Diese Arbeit zeigt, dass das erste Kriterium kein Argument $f\"{u}r$ die Annahme eines phonologischen Wortes ist. Die Existenz eines phonologischen Wortes und die Unterscheidung zwischen zwei Suffixklassen hinsichtlich des prosodischen Status werden durch einen Zirkelschluss $begr\"{u}ndet$, indem die Annahme eines phonologischen Wortes $Ph\"{a}nomene$ wie Silbifizierung und Koordinationsreduktion rechtfertigt, diese $Ph\'{a}nomene$ wiederum ihrerseits die Annahme eines phonologischen Wortes. Die hier vorgeschlagene Constraintsinteraktion erfasst dagegen den wesentlichen Charakter der beiden $Ph\"{a}nomene$, ohne dabei einen direkten Bezug auf das phonologische Wort zu nehrnen. Auch im Zusammenhang mit dem zweiten Kriterium stellt sich heraus, dass es keinen Grund gibt, Akzentunterschiede bei Suffixen anzunehmen. Die Allomorphie der Superlativ-Suffixe +est/+st ergibt sich aus dem Constraintranking OCP$\gg$ $fu{\ss}bezogene$ Constraints, nicht aus dem Akzentunterschied zwischen Suffixen.

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N-tert-Butyl-2-(1-acetoxy-2-fluoro-1-butyl)benzenesulfonamide의 결정 및 분자구조 (The Crystal and Molecular Structure of N-tert-Butyl-2-(1-acetoxy-2-fluoro-1-butyl)benzenesulfonamide, $C_{16}H_{24}FNO_4S$)

  • 김문집;이재혁;김대황
    • 한국결정학회지
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    • 제9권2호
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    • pp.120-124
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    • 1998
  • N-tert-Butyl-2-(1-acetoxy-2-fluoro-1-butyl)benzenesulfonamide의 분자 및 결정구조를 X-선회절법으로 연구하였다. 결정의 공간군은 P21/c이고, 단위포 상수는 a=8.583(2) , b=14.674(2) , c=14.703(2) , β=103.23(1)0, Z=4, V=1802.6(5) 3, Dc=1.27 Mgm-3이다. 회절반점들의 세기는 Rigaku AFC-5 Diffractometer로 얻었으며, graphite로 단색화한 Cu-KαX-선을 사용하였다. 분자구조는 직접법으로 풀었으며 최소자승법으로 정밀화하였다. 최종신뢰도 R값은 2472개의 회절반점에 대하여 0.069였다. 분자 내에 N(7)과 O(4)사이에 1개의 수소결합[2.990(4) ]을 갖으며, C(14)와 C(15)는 반대배열을 갖고 있다. 분자간 가장 인접한 거리는 3.465(5) [C(19) O(5)] (symmetry code: -x, y+1/2, -z+1/2)로 분자간 접촉은 van der Waals 힘에 의해 결합되어 있다.

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