• 한국해양환경ㆍ에너지학회지
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• 제4권2호
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• pp.61-67
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• 2001

해양으로 유입하는 부유쓰레기를 하천에서 차단하는 시스템의 개발에 관해 소개한다. 차단막 시스템은 육상쓰레기에 기인하는 연안역의 해양오염을 방지하기 위한 목적으로 개발되었다. 시스템은 차단막, 계류시스템, 차단막 감는장치로 구성된다. 차단막은 판스프링에 의한 자동 팽창식으로 설계되었으며, 부유쓰레기를 수거하는 콘베이어시스템으로 이송시키는 기능을 한다. 차단막 시스템의 설계기준을 정립하기 위하여, 설계인자들을 고찰하였다. 정립된 설계기준에 기초하여, 차단막 시스템의 시제품이 제작되었으며, 한강의 탄천에서 성능을 시험하였다. 성능시험 곁과는 개발된 차단막 시스템이 효과적으로 하천의 부유쓰레기를 수거할 수 있음을 나타낸다.

• International Journal of Costume and Fashion
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• 제3권
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• pp.51-87
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• 2003

This study aims primarily to discuss the question 'What does the red fashion boom in Korean society during the 2002 World Cup mean\ulcorner' For this question, it describes fashion phenomena and characteristics that appeared during the time. Specifically, in order to understand the concrete essence of the red fashion boom in terms of clothing and textiles, this study classifies and describes the red fashion boom as 'object, process and symbol' concepts. It investigates each case within the context of fashion. Outside that context, then, the implications of the red fashion boom are examined based on cultural studies and other sociocultural perspectives. This question is considered by focusing on social pressures as ideology, looking at the voluntary behaviour of Korean people in this context and examining several other factors. This is an investigation of the relationship between fashion, society and culture pursuing fashion theory by reviewing the relevant theoretical backgrounds afforded by the humanities and the social sciences. Based upon the above theoretical discussions, it synthesises what factors contributed to the Korean red fashion boom. Finally, this study briefly states their applicability to cultural marketing in its practical aspects. This study has attempted to throw some light on the question 'What does the red fashion boom in Korean society during the 2002 World Cup mean\ulcorner' The Korean Red Fashion Boom emerged from its interrelation with each context of the World Cup, as in the dualism of 'Janus'. That is, the World Cup functioned as the positive face of a festival that collected deep emotions and passion and contributed to the integration of society. Whereas its negative face, ideologically speaking, personified the invisible capitalistic product produced by the nation, enterprises and the mass media. And the implications of the red fashion boom can be interpreted with reference to the two faced World Cup.

• 한국의상디자인학회지
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• 제14권3호
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• pp.135-146
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• 2012

This study aims to analyze the preference of jacket design, practical factors regarding jacket-wearing and purchasing behavior for korean baby- boom generation women. The results are as follows: 1. According to the outfit preference survey, the silhouette most preferred by female baby boomers is the "X-line Silhouette", "hip length", "slightly fitted and well fitted". The preferred jacket colors for different seasons were grey and beige for spring, white and light yellow for summer, khaki and brown for fall and black and dark grey for winter. 2. According to the survey on factors to consider when purchasing jackets, 52% indicated that they "almost never" or "occasionally" had their jackets repaired after purchasing them. When purchasing jackets, the highest expected effect of looking younger by wearing a jacket was "looking 4-5 years younger". 3. According to the survey on price demands, the average purchase price for jackets was 160,000~200,000 won (27.80%) followed by 210,000~350,000 won (25.64%) and a significant difference existed based on the purchasers' economic activities.

• Journal of Biosystems Engineering
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• 제21권1호
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• pp.34-43
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• 1996

The present pesticide application technology widely used with a power sprayer in Korea is assessed as the problem awaiting solution in the point of view of its ineffectiveness, inefficiency, and environmental contamination. As one approach to get rid of these problems, the boom spraying with ultra-low volume and precision application technology has been recommended. The study was undertaken to investigate plants damages incurred by the self-propelled boom-sprayer vehicle, to develop the design criteria of vehicle wheel, and to compare plant damages caused by the front wheel steering vehicle, the 4-wheel drive vehicle and the articulated vehicle, by the computer simulation. The experiment showed that the amount of damaged plants incurred by the self-propelled boom sprayer were about 0.29% in average in the field size of 100m$\times$50m(0.5ha), about 60~80% of which recovering while growing. The recommandable wheel size was analyzed to be 70~100cm in diameter, 8~15cm in width from the vehicle-plant-soil relationship. The simulation on damaged plants anticipated to be incurred by various steering vehicles showed that the smaller the turning radius, the lesser the damaged plants within its range of 3~5m. Average plant damage rate by the front wheel steering vehicle, the 4-wheel drive vehicle and articulated vehicle was relatively assessed to be 2 : 1.8 : 1.

• 한국해양환경ㆍ에너지학회지
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• 제6권2호
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• pp.63-71
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• 2003

해양 부유폐기물의 주요 발생원은 홍수시 육상으로부터 발생되어 해양으로 유입되는 부유쓰레기에 기인하며, 부유쓰레기가 해상으로 유입되는 것을 효과적으로 수거하는데 사용하는 것이 차단막이다. 강한 흐름이 존재하는 강이나 하천에 차단막을 설치할 때 흐름에 의한 차단막에 작용하는 항력과 장력은 흐름의 속도와 방향, 설치된 차단막의 형상, 수면아래의 차단 부의 형상에 따라 변한다. 본 논문에서는 기존 차단막에서 활용되고 있는 대표적인 형태를 대상으로 1/5, 1/10, 1/20 모델을 제작하여 개구비(gap ratio)에 따른 유속별 장력을 계측함으로서 높은 유속에 노출된 부유물 차단막에 대한 설계장력 추정법을 정립하고자 하였다. 또한 기존 이론에 의한 장력 추정법과의 상관관계를 검토하여 기존에 사용되어 오던 장력계수보다 더 큰 값을 사용하는 것이 타당함을 밝혔다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 춘계학술대회 논문집
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• pp.377-378
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• 2006

The knuckle crane mainly consists of six parts such as swing, main boom, outer boom, extension boom, hydraulic rotor and knuckle. And the hydraulic rotor is connected at the end of extension boom has rotor block, rotor body, rotor vane. In this study, we carried out kinematics analysis of the hydraulic rotor block curvature for a knuckle crane. Then, we showed the formula to establish the radius of a circumscribed circle to form the rotor block curvature. Third, we analyzed the stress at each point of the rotor block curvature according to the contact angle. From the result of this study, we designed the rotor block curvature with a proper contact angle for a knuckle crane to guarantee the stability of hydraulic rotor.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.452-455
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• 2018

휠로더는 붐과 버켓을 제어하여 굴삭 및 덤핑 작업을 수행한다. 휠로더 장비 운전은 반복 작업이 많고, 작업환경이 열악하지만 오직 사람에 의한 수작업으로 진행되고 있다. 최근 전장품에서도 무인 자동화 시스템을 적용하려는 요구가 점차 증가하고 있다. 휠로더의 자동화 시스템은 안정된 제어를 위해 정확한 각도 검출을 검출이 필수적이다. 본 논문은 노이즈에 강인 하면서 정밀 각도 제어를 위한 신호처리시스템을 제안한다. 제안 시스템을 구현하여 휠로더 붐각도 시스템에 적용한 결과 약 0.1도 각도 변화 검출이 가능하였다.

• 한국분무공학회지
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• 제21권4호
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• pp.195-199
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• 2016

Spraying of nozzles and design of tractor-attached boom sprayers have been studied for analysis of liquid spraying features. The following conclusions have been drawn. At all pressures, twin flat spray tips was finer than flat spray tips. A fine spray with VMD of 101 to 200 appeared at 1.5MPa. So, it was selected as the boom sprayer nozzle. In spraying uniformity analysis, Type B was proven to have more uniformity than Type A and Type C at 52.0 cm attached distance. Type A and Type C were proven to have more uniformity than Type B at 58.5 cm attached distance. It is concluded that these results reflect atomizing characteristics of nozzles during pest control with tractor-attached boom sprayer. Therefore, optimum setting will be putting Type C with 58.5 cm distance.

• 천문학회보
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• 제45권1호
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• pp.40.1-40.1
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• 2020

The Korea Astronomy and Space Science Institute is participating as a South Korean partner in the Commercial Lunar Payload Services (CLPS)of NASA. In response, the Korea Astronomy and Space Science Institute is currently conducting basic research for the development of four candidate instrument payloads. The magnetic field instrument is one of them and it's scientific mission objective is the moon's surface magnetic field investigation. Therefore, the development requirement of the lunar surface magnetic field instrument were derived and the initial conceptual design was started. The magnetic field instrument has a 1.2 meter boom which has two three-axis fluxgate magnetometer sensors and one gyro sensor to get a attitude information of the boom. The concept of measuring the lunar surface magnetic field will carry out using multiple sensors by placing semiconductor type magnetic field sensors inside the electric box including boom mounted fluxgate sensors. In order to overcome the very short development period, we will use the KPLO (Korean Lunar Pathfinder Orbiter) magnetometer design and parts to improve reliabilities for this instrument. In this presentation, we introduce the instrument requirements and conceptual design for the Lunar surface magnetic field instruments.

• 한국기계가공학회지
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• 제17권2호
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• pp.137-144
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• 2018

This study describes the 3D design and analysis of a composite insulation boom of an aerial work platform for electric work. Structural analysis of the composite insulation boom was performed using ANSYS and the total deformation, equivalent stress, and normal elasticity were investigated at 150 mm, 500 mm, 1,000 mm, and 1,500 mm using a mounted strain gauge. The results of the analysis and test were similar in a linearly increasing slope and the difference in the strain value was about 10%. This difference depends on the compressive force in the manufacturing process.