• 한국의상디자인학회지
• /
• 제19권3호
• /
• pp.175-192
• /
• 2017

The purpose of this study is to provide the characteristics and development direction of K-fashion and to systematize the strategic features performed by government agencies, fashion associations, fashion companies, and other companies to activate K-fashion. This research analyzed K-fashion related articles published in major newspapers and magazines in Korea from the late 1990s to early 2017. The results of the study are as follows. 1. The characteristics of K-fashion are as follows: The first is a trendy and sophisticated design with modern sensibilities, unique designs that reinterpret the latest trends with designer creativity, practical and popular designs that ordinary people can wear comfortably in everyday life. The second is functional and trendy materials. The third is excellent sewing technology. The fourth is rapid turnover of products by quick connections among planning, production and sales. The fifth is a lower price than quality. 2. The direction for K-fashion to pursue was the continuous and ongoing development of the above characteristics and the creation of a 'design with the Korean emotion of its 5,000 year history'. 3. The following projects were carried out to promote K-fashion. 1) Utilization of K-pop, K-drama and other Korean wave content. (1) Holding a fashion concert event that combines Idol's K-Pop performances with fashion shows. (2) Hallyu (Korean wave) star's costume support and design collaboration with Hallyu stars. (3) Collaboration between entertainment companies and fashion companies. 2) Nurturing a global fashion branding project. 3) Business support for overseas expansion of the K-fashion brand. (1) Support project for foreign trade fair participation. (2) Holding a fashion brand fair in Korea. (3) Overseas business support by establishing a showroom and design center 4) Business to discover and nurture new designers

• Computational Structural Engineering : An International Journal
• /
• 제2권1호
• /
• pp.33-42
• /
• 2002

A computationally efficient stiffness design method for building structures is proposed in which dynamic soil-structure interaction based on the wave-propagation theory is taken into account. A sway-rocking shear building model with appropriate ground impedances derived from the cone models due to Meek and Wolf (1994) is used as a simplified design model. Two representative models, i.e. a structure on a homogeneous half-space ground and a structure on a soil layer on rigid rock, are considered. Super-structure stiffness satisfying a desired stiffness performance condition are determined via an inverse problem formulation for a prescribed ground-surface response spectrum. It is shown through a simple yet reasonably accurate model that the ground conditions, e.g. homogeneous half-space or soil layer on rigid rock (frequency-dependence of impedance functions), ground properties (shear wave velocity), depth of surface ground, have extensive influence on the super-structure design.

• Journal of the Optical Society of Korea
• /
• 제13권2호
• /
• pp.286-293
• /
• 2009

In this paper, we present an optimal shape design method for a dielectric microlens which is used to focus an incoming infrared plane wave in wideband, by exploiting the finite difference time domain (FDTD) technique and the topology optimization technique. Topology optimization is a scheme to search an optimal shape by adjusting the material properties, which are design variables, within the design space. And by introducing the adjoint variable method, we can effectively calculate a derivative of the objective function with respect to the design variable. To verify the proposed method, a shape design problem of a dielectric microlens is tested when illuminated by a transverse electric (TE)-polarized infrared plane wave. In this problem, the design variable is the dielectric constant within the design space of a dielectric microlens. The design objective is to maximally focus the incoming magnetic field at a specific point in wideband.

• 한국해양공학회지
• /
• 제16권6호
• /
• pp.7-17
• /
• 2002

Recently, artificial rocks, instead of buoys, have been placed on the submerged breakwater to indicate its location. The accurate estimation of wave forces on these rocks is deemed necessary for their stability design. Characteristics of the wave force, however, are expected . to be very complicated because of the occurrence of breaking or post-breaking waves. In this regard, wave forces exerted on an artificial rock have been investigated in this paper. The maximum wave force has been found to strongly dependent on the location and shape of the artificial rock that is placed on the submerged breakwater. The plunging breaker occurs near the loading cram edge of a submerged breakwater, which cause impulsive breaking wave force on the rock. Using the Morison equation, with the velocity and acceleration at the front face of the artificial rock and varying water surface level, it is possible to estimate wave forces, even impulsive breaking wave forces, that are acting on the rock installed on a submerged breakwater. The vertical wave force is also found to depend, significantly, on the buoyant force.

• 한국항해항만학회지
• /
• 제41권5호
• /
• pp.329-336
• /
• 2017

This study suggests a general process of analyzing the mooring and cargo handling limit waves, which is an incident to the new energy port under long wave agitation. To reduce damages of ships and harbor structures due to strong wave responses, it is necessary to predict the change of wave field in the mooring berth to make the proper decision by dock master. The berthing area at a new LNG port in the east coast of Korea in this study is frequently affected by oscillations from waves of 8.5~13s periods in the wintertime. The long period waves give difficulties on port operation by lowering the annual berthing ratio. It needs to find the event waves from the real time offshore wave records, which cause over the mooring limits. For that purpose, the wave records from field measurement and offshore wave buoy were analyzed. From numerical simulation, the response characteristics of long period waves in the berthing area were deduced with or without breakwater expansion plan, analyzing the offshore field wave data collected for two years. Some event wave cases caused over the cargo handling and mooring limits as per the standard Korean port design guideline, and those were used for the decision of port operation by dock master, comparing with the real time offshore wave observations.

• 대한조선학회논문집
• /
• 제60권2호
• /
• pp.76-85
• /
• 2023

The present study aims to review the wave pattern resistance analysis method suggested by the International Towing Tank Conference. From the experimental database of a container carrier ship model, the wave pattern measurement and resistance test results are utilized. The wave pattern resistance at the design Froude number is obtained to be compared with the wave making resistance of experiments. Wave pattern resistance is lower than wave making resistance by 1978 ITTC and uniform regardless of transverse location of wave cut. The method is also applied to the wave height field by Computational Fluid Dynamics (CFD) analyses with Froude number variation. Although numerical damping suppressed waves in downstream, waves around the hull and wave pattern resistance are properly predicted.

• Journal of Advanced Marine Engineering and Technology
• /
• 제38권7호
• /
• pp.936-942
• /
• 2014

화석 연료의 고갈로 인해 신재생 에너지에 관한 관심이 날로 증가하고 있다. 그 중에서도 예측가능성이 높고 이용 가능한 양이 풍부한 파력에너지에 관한 연구가 활발히 진행되고 있다. 부유체-균형추식 파력발전장치는 진동 타입과 비교해 구조 강도가 증진된 장치이며, 부유체의 포면에 웨이브 캠버라 불리우는 격벽을 설치하여 파도가 오직 상하운동만을 하도록 만들었다. 본 논문은 주로 병렬 연결된 파력 발전장치의 발전량에 중점을 두고, 그 발전량을 계산하였다. 그 결과, nl/L의 값이 증가할수록, 더 많은 전력량이 발생하고, nl/L=0.40 이상이 되었을 때, 상시 연속적인 발전량이 얻어진다는 것을 알 수 있었다. 이 연구를 통해서, 실제 해역 조건에 유리한 유수실을 설계하는데 기본 자료로 활용할 수 있다.

• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 2009년도 춘계 학술발표회
• /
• pp.579-584
• /
• 2009

Arrangement of the facilities for improving harbor functions depends on sea and land conditions such as the ship's arrival and departure conditions, waves and tide. And the plan and the size of the facilities depend much on harbor and marine environment condition such as cargo quantity, ship size, ship traffic and seawater circulation. Among these, waves have so much effect on a breakwater design that it is the most important to understand their characteristics and to apply them to breakwater design. Therefore, to analyze the effect of waves characteristics over a rubble mound breakwater, we have calculated wave pressure by using numerical analysis at each tide level and have analyzed the effect of wave pressure on structure stability by conducting the stability analysis with the wave pressure. As a result, it is found that during low and mean tide level time the biggest wave pressure is estimated near calm water level. But during high tide time, the biggest wave pressure is estimated in front of capping. And the stability analysis indicates also that a structure is most unstable when low tide time wave pressure is acting on. After reviewing the stability of a structure by applying vertical and horizon wave forces, it is concluded that safety factor is lower than ordinary time(max. about 15%), is also reviewed when designing a rubble mound breakwater.

• 한국철도학회논문집
• /
• 제17권6호
• /
• pp.397-401
• /
• 2014

신개념의 해상 교통 인프라인 부유식 해중철도의 합리적인 설계를 위해서는 파랑 중에 해중철도 구조체에 가해지는 유체력을 추정하여야 한다. 간편하지만 정확도 높은 유체력 추정을 위해 유체동력학 이론을 이용한 계산식을 제안하고, 수조에서 상사 모형에 대해 실험을 수행하여 비교 평가하였다. Morison식과 선형 미소진폭 파이론을 이용하여 계산된 관성력과 항력은 모형 실험 결과를 통해 계측된 유체력과 양호한 일치를 얻었다. 해중철도 구조체에 작용하는 항력은 관성력에 비해 무시할 만한 수준이었고, 파력은 파수에 따라 큰 변동을 보이지 않으나 파고에는 선형적으로 비례함을 알 수 있었다. 선형 파이론과 Morison식은 해중철도 설계 시에 간편하고 유용하게 활용될 수 있음을 확인하였다.

• 한국해안·해양공학회논문집
• /
• 제33권6호
• /
• pp.321-332
• /
• 2021

경사식방파제 상치콘크리트에는 경제적인 이유와 월파의 효과적인 저감을 위해 파라펫이 설치되기도 하지만, 파라펫 설치로 인해 상치콘크리트에는 증가된 파압이 작용하게 된다. 일반적으로 상치콘크리트에 작용하는 파압은 수리실험을 통해 검토되며, 상치콘크리트 설계를 위해서는 파압이 산정되어야 하지만 여전히 불명확한 부분이 있다. 본 연구에서는 상치콘크리트에 작용하는 수평파압 산정을 위해 경사식구조물 형상과 다양한 파랑조건을 적용한 수리실험을 수행하였다. 실험결과를 이용하여 Goda(1974, 2010)의 파압산정식에 적용되는 파압저감계수를 제안하였으며, 테트라포드가 피복된 경사식방파제 상치콘크리트 설계에 실무적으로 적용 가능 할 것으로 기대된다.