• 한국의상디자인학회지
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• 제22권3호
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• pp.63-74
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• 2020

Modern clothes are part of formative arts and express experimentation and originality. This tendency is especially prominent in structural fashion. This study set out to analyze structural fashion in various aspects, examining and analyzing the expressive and formative characteristics of Deformation and contribute to the development of creative fashion design. The approach of peer debriefing was used with three fashion experts to identify structural clothes in the women's haute couture collections from a total of 24 seasons from S/S of 2008 to F/W of 2019. The clothes with Deformation characteristics were then identified to analyze expressive and formative characteristics. The expressive characteristics of Deformation in structural clothes were exaggeration, distortion, and recombination. Exaggeration was expressed with exaggerated sizes, forms, and excessive use. Distortion was expressed with distorted forms and functions and through optical illusions. Recombination was expressed with the recombination of forms and roles. The formative characteristics of Deformation were maximum, playfulness, and unfamiliarity. The study connected the expressive characteristics to the formative ones and examined them simultaneously, finding that "distortion" and "playfulness" represented the expressive and formative characteristics, respectively. The characteristics of Deformation are expressed in various ways in structural fashion. If they are considered, they will make valuable contributions to creative ideas.

• E2M - 전기 전자와 첨단 소재
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• 제7권5호
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• pp.403-408
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• 1994

Dielectric and structural properties of $Ba_{1-x}$(Z $n_{1}$3/T $a_{2}$3/) $O_{3}$+1 mol% Mn $O_{2}$ (x=0, 0.01, 0.02, 0.03, 0.04) ceramics was investigated at microwave frequencies. With $Ba_{+2}$ shortage, the sinterability and the unloaded Q( $Q_{u}$) were much improved, and the ordering in B site and the lattice distortion was greatly enhanced and the structure approached the completely ordered structure. $Q_{u}$ was strongly correlated with these factors such as ordering ratio, lattice distortion and sinterability, and had the maximum value of 7500 at x=0.01. The dielectric constant was near 30 and the temperature coefficient of the resonant frequency was 2 ppm/.deg. C at x=0.01.1.1.1.

• 한국지반공학회논문집
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• 제15권4호
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• pp.19-42
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• 1999

도심지에 터널을 건설할 때는 설계ㆍ시공에 있어서 중요한 몇몇 고려 사항이 있다. 첫째는 특정한 지반조건과 시공조건에 대해서 지반변위의 크기와 분포를 예측하는 것이다. 두 번째는 예측된 지반거동에 상응하는 인접구조물들의 잠재적 손상을 평가하는 것이고, 셋째는 잠재적 손상이 예견되는 구조물에 대한 적절한 보강대책을 선정하는 것이다. 본 연구는 주로 첫 번째와 두 번째 단계의 문제를 해결하는데 주안점을 두고 있고 특히, 지상에 존재하는 건물의 기하학적 특성과 위치적 특성을 고려한 손상평가 방법에 연구의 초점을 두고 있다. 이를 위해서 도심지 터널 굴착 시 발생할 수 있는 지표침하 거동 예측 결과를 기반으로 예측할 수 있는 지상 건물의 손상평가 인자들(뒤틈각(angular distortion), 처짐비(deflection ratio), 건물의 최대침하량, 부등침하량, 수평변형률)을 도입하였고, 기존의 보수적인 해석 방법을 좀 더 발전시키기 위해서 지상에 존재하는 건물 벽체 각각에 대해서 분석할 수 있도록 이러한 인자들을 3차원적으로 표현할 수 있는 프로그램을 개발하였다. 또한, 건물의 기하학적, 위치적 특성 등의 변화에 대한 손상평가 인자들의 변화를 관찰하고, 실무에서 이러한 평가 결과를 활용할 수 있도록 가이드를 제시하고자 하였다. 한편, 국외의 몇몇 인접 건물에 대한 손상평가 사례와 본 연구에서 제안하고 있는 방법에 대한 비교 연구를 수행하여 현장에서 이를 활용할 수 있는 방법을 모색하였다.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2003년도 추계학술발표회 논문집
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• pp.373-378
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• 2003

This study deals with development of transformation tool for transformation of digital map coordinates systems using by the best fit transformation parameters which are determined between the local geodetic datum and geocentric datum (ITRF2000) in Korea and distortion modelling derived from collocation method. We used 107 control points as a common points. For analyzing the derived parameters, another 83 common points are tested. Finally, the best fit parameters are determined from Molodensky-Badekas model after considering the RMSE, maximum value, minimum values, and 95% confidence interval of residuals. after transformation of best fit parameters and distortion modelling, we could develop transformation tools with advenced accuracy. so it is possible to perform on transformation of digital map with scale 1:5,000. and we tested accuracy eveluation through analysis between transformation results and field results of GPS observation.

• 전기학회논문지
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• 제61권10호
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• pp.1461-1470
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• 2012

This paper reports the contamination performance of transmission line porcelain insulators tested under five different contaminant conditions - clean and ESDD (equivalent salt deposit density) level (A, B, C, and D) through measurement of their leakage current under drop of potential method. To estimate the contamination for transmission line porcelain insulators, leakage current waveform and its maximum value were measured under step-up power test. In the clean insulators test, % distortion factors decreased with increasing step-up power, and as the ESDD level increased, some characteristics such as frequency analysis, harmonics and % distortion facotor could be used for contamination diagnosis of the transmission line porcelain insulators.

• Tribology and Lubricants
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• 제16권2호
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• pp.7-7
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• 2000

Using a coupled thermal-mechanical analysis, the dynamic distortion of the ventilated disk brakes has been presented for a high-speed train. The offset ratio between the maximum and minimum values of the thermal distortions has been analyzed as a function of a braking number. The computed FEM results show that the offset rations in radial direction are much greater than those of circumferentially distorted components. This means that the axial distortions in radial direction may dominantly produce thermally caused wears and cracks at the rubbing surfaces.

• Tribology and Lubricants
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• 제16권2호
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• pp.99-105
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• 2000

Using a coupled thermal-mechanical analysis, the dynamic distortion of the ventilated disk brakes has been presented for a high-speed train. The offset ratio between the maximum and minimum values of the thermal distortions has been analyzed as a function of a braking number. The computed FEM results show that the offset ratios in radial direction are much greater than those of circumferentially distorted components. This means that the axial distortions in radial direction may dominantly produce thermally caused wears and cracks at the rubbing surfaces.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 D
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• pp.2193-2194
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• 2006

This paper presents the results of a grid-connected photovoltaic (PV) system modeling that contain incremental conductance MPPT(Maximum Power Point Tracking) controller by PSCAD/EMTDC simulator and investigates the influence that can occur in the grid-connected PV system from aspect of power quality, i.e. voltage drop, total harmonic distortion(THD) and total demand distortion(TDD). The measured data the PV array modeling of PSCAD/EMTDC in Cheongwadae, Seoul, Korea is used in the paper.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.561-562
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• 2006

This paper presents the results of a grid-connected photovoltaic(PV) system modeling that contain incremental conductance MPPT(Maximum Power Point Tracking) controller by PSCAD/EMTDC simulator and investigates the influence that can occur in the grid-connected PV system from aspect of power Quality, i.e. voltage drop, total harmonic distortion(THD) and total demand distortion(TDD) The measured data the PV array modeling of PSCAD/EMTDC in Cheongwadae, Seoul, Korea is used in the paper.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 하계종합학술대회논문집
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• pp.98-101
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• 1998

The intermodulation distortion(IMD) due to laser diode nonlinearity of an asynhcronous direct sequence code diviion multiple access(DS/CDMA) system in wireless-optical transmission system model is analzed. A third order polynomial is used to represent laser diode nonlinearity. In DS/CDMA system, only one harmonic of the third-order intermodulation term falls on the signal frequency band and influences the system performance characteristics. To cancel multi-user interference and nonlinear distortion in a DS/CDMA wireless-optical transmission system model, the simple transversal filter structure with N-taps of (N-1) tap delay of 1 chip time delay line is used. It is necessary to select an optimal modulation index that provides a maximum signal-to-noise ratio and the results are useful for CDMA system design.