• 대한관절경학회지
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• 제9권1호
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• pp.56-59
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• 2005

후격막 통과 도달법을 이용한 관절 내시경 수술은 슬관절 후방부에 위치한 병변의 진단 및 치료에 유용하게 사용되고 있는 술기이다. 저자들은, 후내측 후격막 통과 도달법을 이용하여 환자의 다리를 4자 형태로 압력을 가해 외측 관절 간격을 넓힘으로써 후각부의 하인을 제외한 외측 반월상 연골의 전부분 특히, 전각부의 하연과 전각부 아래의 경골외과를 쉽게 관찰할 수 있었다. 또, 수술시 후방에서 시야확보가 가능하여 전내측 및 전외측 삽입구를 통해 혼잡(clouding)이 없이 기구를 자유롭게 사용할 수 있어 외측 구획의 수술 특히, 전방부의 수술에 유용하게 사용될 수 있을 것으로 생각된다.

• 복식
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• 제62권7호
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• pp.150-169
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• 2012

Contemporary fashion broadens its image in relation with architecture and incorporates architecture in its creative field. The aim of this research is to investigate the characteristics of 'architecture for fashion' in a social context and to verify the collaborative characteristics of post-1990s fashion and architecture. This paper describes architecture as a means of expressing contemporary style and identifies social consequences resulting from this. While high fashion in the early to mid-twentieth century followed a similar trend evident in architecture to directly apply architectural elements into the creativity of the works, high fashion from 1990 extended its creative field by using architecture to symbolically represent its image and style. In line with the possibility for fashion shows to be considered as a performance art, the potential of collaboration between architecture and fashion as an installation with audience participation is discussed. Architecture, for fashion, provides significant grounds for fashion to be recognized as a parallel, independent sphere of art. Contemporary fashion, either by itself or through collaboration with architecture, comprehends space in its zone of creation. The collaborative characteristics of post-1990s fashion and architecture is verified through case studies of the three fashion houses, 'Armani Group', 'PRADA' and 'Comme des Garςcons.'

• 대한기계학회:학술대회논문집
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• 대한기계학회 2000년도 춘계학술대회논문집B
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• pp.795-800
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• 2000

A CCFL(Counter Current Flow Limit) test have been performed in narrow annular gaps with large diameter, because it has been confirmed that the CCFL phenomena affected the critical power in hemispherical narrow gap geometries from the SONATA(Simulation Of Naturally Arrested Thermal Attack)-IV (In-Vessel)/VISU(Visualization)-II experiments. The objectives of the CCFL experiments are to investigate the small gap sizes(1, 2mm) effect on CCFL under the large diameter condition and to confirm the findings of the VISU-II study that global dryout in hemispherical narrow gaps was induced by the CCFL. The test section was made of acrylic resin to allow visual observation on the two-phase flow behaviors inside annular gaps. It was observed from visualization that a part of water supplied was accumulated in the upper plenum and a significant increase in the differential pressure across the gap was occurred, which was the definition of the CCFL occurrence in this experimental study. From the experimental results in annular gap with large diameter it can be known that an increase in the differential pressure was not big at small air flow-rates. When the CCFL was occurred, the differential pressure across gaps was increased significantly and a water accumulated in the upper plenum. The occurrence of CCFL was correlated using the Wallis parameter.

• 한국실내디자인학회논문집
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• 제22권1호
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• pp.64-74
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• 2013

The aim of this research is to explore the potential of analogy and metaphor as design strategies for supporting the creative design thinking. For the empirical research on analogical and metaphoric process in designing, we conducted design experiments that consist of three different conditions of given items as stimulation for design inspiration: baseline, surrealist paintings, and housing design collections. The results were analyzed using a protocol analysis in order to obtain more systmatic interpretation of the design processes and strategies. As a result, it was noted that students are more apt to read visual information rather than semantic information in the given items. Instead of the representation of their senses or feelings from the paintings, they visualized the analogical images of the paintings for the design representation. However, analogical and metaphoric thinking derived from the given items seem change a designer's perspective, thus bring a novel interpretation on design problems, and eventually more creative and meaningful design ideas. An extended research using one-semester training and observation of the design studio process is introduced as a follow-up study for this paper. This research will investigate the long-term effect of the analogy and metaphor on the design thinking.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2001년도 추계학술대회 논문집 Vol.14 No.1
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• pp.270-273
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• 2001

Electrical tree is studied widely by manufacture state of insulating material fare and blazing fire diagnosis system of use in phenomenon of part discharge that happen for main cause of dielectric breakdown of equipment for electric power. Use process that draw tree pattern here measuring above zero to study special quality of this electricity tree, real-time processing by image processing is proposed because reproduction of tree blazing fire process drops and pattern of tree is difficult correct quantification of tree growth by existent visual observation by involution. This research presents general process that need in image processing of tree blazing fire, and that remove various noises that happen in above zero by measuring electrical tree dividing background and complete view in measured above zero taking advantage of specially proposed complete view object abstraction techniques effectively and quantification of tree becomes easy naturally, can apply to dielectric breakdown estimate because can chase growth process of tree.

• 대한기계학회논문집B
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• 제26권1호
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• pp.74-81
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• 2002

Combustion phenomena in a sub-millimeter scale combustor have been investigated. To evaluate scale effect on flame propagation characteristics, a cylindrical combustion chamber with variable depth was built in-house. The combustor was charged with premixed gas of hydrogen and air and ignited electronically. A piezo electric pressure transducer recorded transient pressure after the ignition. Measurements were made at different test conditions specified with chamber depth and initial pressure as parameters. Visual observation was made through a quartz glass window on top side of the combustion chamber using high speed digital video camera. From the pressure data, available work was estimated and compared with energy input required for stable ignition. The preliminary results suggested that the net thermal energy release is sufficient to generate power and enables a combustor of the size in the present study to be used as the energy source of a micro power devices .

• 한국항공운항학회지
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• 제21권1호
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• pp.74-79
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• 2013

Early remotely-piloted aircraft system (RPAS) development focused on simple reconnaissance to obtain information by visual observation for military demands. Currently, various types of remotely-piloted aircraft (RPA) is being developed worldwide for applications in many different areas. As RPA avionics are combined with CNS/ATM technologies, RPA capabilities will be enhanced and the market is expected to grow rapidly. ICAO has been held the Air Navigation Commission on 14 October 2011 to discuss revising Procedures for air navigation services (PANS) and guidance material related to RPA and their associated systems. It progressed that Annex 2 and 7 will be revised and came into effect from 2012. However most of incorporate revisions are not clear yet. Because the revision articles recommend follow requirements of the state(s). Considering operations of RPA in controlled airspace and between adjacent states, the qualification and training of RPA pilot will be one of the main issues for RPA operation. In this paper, we will take a look at international and domestic trends of regulation framework in ICAO and RPA advanced country in chapter 2.1 and suggest about consideration of remote pilot qualification and training for establishing regulations of remote pilot license.

• 한국도로학회논문집
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• 제19권2호
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• pp.25-34
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• 2017

PURPOSES: The purpose of this paper is to evaluate interface performance while using various tack coat materials for asphalt overlay. METHODS : The evaluation was conducted with tracking test, permeability, and interface bond strength. Tracking test was conducted using an image processing technique, to investigate the susceptibility of the tack coat materials. BBS and pull-off test were conducted to evaluate bond strength. The permeability test was conducted to evaluate the effect of tack coat materials. RESULTS : Results reveal that the trackless tack coat material demonstrates less tracking compared to other materials. Moreover, both BBS and pull-off tests can effectively evaluate the bond strength at the interface. RSC-4 was measured less bond strength. Moreover, tack coat prevents water penetration through the surface and aids the extension of the surface life of asphalt pavement. CONCLUSIONS : Trackless tack coat demonstrated a high and consistent bond strength performance. The tack coat types demonstrate marginally different performance as function of curing times. Field applicability was tested based on visual observation. Therefore, these should be considered when trackless tack coat is slightly enhanced the pavement performance based on limited this study results. Finally, it is necessary to allow reasonable time for the tack coat to completely cure.

• 한국정밀공학회지
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• 제22권10호
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• pp.121-128
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• 2005

The research on electromagnetic shielding has been advanced for military applications as well as for commercial products. Utilizing the reflective properties and absorptive properties of shielding material, the replied signal measured at the rear surface or at the signal source can be minimized. The shielding effect was obtained from materials having special absorptive properties and structural characteristics such as stacking sequence. Recently researchers studied the electromagnetic properties of nano size particles. In this research {glass fiber}/{epoxy}/{nano particle} composites(GFR-Nano composites) was fabricated using various nano particles, and their properties in electromagnetic shielding were compared. For the visual observation of the nano composite materials, SEM(Scanning Electron Microscope) and TEM(Transmission Electron Microscope) were used. For the measurement of electromagnetic shielding, HP8719ES S-parameter Vector Network Analyser System was used on the frequency range of 8 GHz${\~}$12GHz. Among the nano particles, carbon black and Multi-Walled Carbon Nano-Tube (MWCNT) revealed outstanding electromagnetic shielding. Although silver nano particles (flake and powder) were expected to have effective electromagnetic shielding due to their excellent electric conductivities, test results showed little shielding characteristics.

• 한국산학기술학회논문지
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• 제15권8호
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• pp.4821-4830
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• 2014

본 논문은 그래픽 디자인에서 디자인리서치의 중요성과 사회와 인간과 함께하는 디자인적 방법(Design tools)의 이해 고취가 목표이다. 본 연구는 총 60명을 대상으로 연구를 진행하였으며, 참여자들은 IDEO 툴킷(방법)을 활용하였다. 총 세 개의 설문조사가 이루어졌으면 두 개의 설문지는 동일한 형태로 프로젝트 참여 '사전'과 '사후'에 각각 사용되었다. 마지막은 학생들의 작업을 평가하기 위해 전문가 6인의 조사가 이루어졌다. 예비분석에서는 학생들의 프로젝트 이전의 리서치 경향 인터넷과 문헌자료에 의존도가 매우 높고 체계적인 연구의 형태를 보이지 않았다. 본 분석을 통해서는 리서치에 많은 시간을 할애하고 디자인적 방법을 사용한 그룹의 평가가 긍정적으로 나타났다. 특히, '관찰'기법을 이용한 그룹의 긍정적 평가가 높게 나타났다.