• Proceedings of the Korean Geotechical Society Conference
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• 2002.10a
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• pp.659-664
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• 2002

New design method about the spread footing was developed using only soil and geosynthetics. This footing will be able to replace the concrete footing at constructing the foundation of small structures. As shown in Fig-3(b), after excavating the ground in semicircular shape, geosynthetics is layed on the semicircular shape of ground and let the soil filled. Geosynthetics of upper side are fixed tightly each other It can be thought to be a kind of great bag with semicircular shape. We performed two kinds of experiments to investigate the deformation and the failure shape of spread footing reinforced by geosynthetics. First, after making model ground with aluminium rods, the lattice point of 1cm ${\times}$ 1cm size of the side of aluminium rods have been painted with various kinds of colors. We have observed the movement of painted rods during loading. Second, we have taken pictures about failure process using B-shutter method. Analysing the behavior of model ground reinforced in a semicircular shape, we could know the reinforced one has much greater and wider plastic area than unreinforced one at failure. Based on the experimental results, new design method was proposed, which has a possibility to apply at the field works.

• Journal of the Korean Society of Clothing and Textiles
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• v.42 no.3
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• pp.486-502
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• 2018

Mass-production caused by industrialization has led to environmental pollution; however, a potential solution to this problem is the Up-cycling fashion design belonging to the sustainable design category. This study analyzed the material characteristics of each brand fashion product by selecting 21 domestic Up-cycling fashion brands. The product types manufactured by domestic Up-cycling fashion brands could be divided into fashion clothing, bag, and fashion accessories. The materials used for each item included special material, waste fiber, waste leather, waste paper, and others. In the results of analyzing the material characteristics into the external characteristics and internal characteristics, the external characteristics included the durability with less abrasiveness and deformation as well as a mixture with other different materials, while the internal characteristics included a story arousing consumers' empathy, and scarcity without the same design due to the limitation of material.

• The Research Journal of the Costume Culture
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• v.21 no.3
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• pp.376-393
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• 2013

In modern society, culture is an important factor to form a country's image and identity and a representative content to generate revenue. Culture is a keyword to design life in the 21st century and has become competitiveness between countries. As a cultural content with international competitiveness, this study performed textile design development with the use of relics from the Tomb of King Muryeong, which is the tumulus of King Muryeong who was the 25th king of Baekje among Korean history. The developed design could be applied to the production of various fashion cultural products such as clothes, scarf, neck-tie, and bag. The process for the design development was carried out as follows: As a first step, this study found basis as a cultural content with a global sense that could form the historical value of the Tomb of King Muryeong and gain global sympathy of people all over the world through literature reviews. As a second step, this study examined the current state that traditional Korean elements were used as a fashion cultural products. As a third step, this study analyzed the current state and problems of fashion cultural products using relics from the Tomb of King Muryeong through field survey. As a final step, this study planned the concept of design with the use of diadem ornaments, earring, sword, stone guardian animal, and bricks with lotus-flower design from the tomb of King Muryeong. And these developed 6 textile designs could be applied to the production of various fashion cultural products.

• Transactions of the KSME C: Technology and Education
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• v.1 no.1
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• pp.13-19
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• 2013

Ftheta Lens, whose image height is proportional to its field view angle, is one of the most important parts in Laser Scanning Unit(LSU). In this paper $f{\theta}$ lens design, mold production and modification method of lens design and mold are introduced. Lens design was carried out with Zemax and Special Toric surfaces were applied for lens surfaces to minimize distortion both in main and sub scanning directions. And a high precision machine with 1nm resolution was used to fabricate lens mold cores. After injection the lens was evaluated and the difference from design was examined. This difference was compensated by modifying lens design and new lens mold cores were made according to modified lens design to obtain the quality of original design.

• Journal of Digital Convergence
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• v.20 no.2
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• pp.399-405
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• 2022

This study suggests focused in user-centered design which are new separate discharge system that must recycle in paper materials. I searched cases in Korea's current law and regulation in recycling disposal guidelines and already succeed cases in each city that are Asia, Europe, and North America. Suggesting focused in user-centered design of ID(Identification) separate discharge system due to user's good participations, feedbacks of participation's results, and well-organized in awarding. This system consists of visual individual's ID(Identification) that are stickered in only used bag. User must recycle in separate discharge system only used bags, and results must visualized in each user and rewards to user. This separate discharge system is meaning to stimulate user's good participations.

• 한국연소학회:학술대회논문집
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• 2006.10a
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• pp.168-174
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• 2006

A pilot scale (200kg/hr) pyrolysis melting incineration system is designed and constructed in Korea Institute of Industrial Technology. The incineration process is composed of pyrolysis, gas combustion, ash melting, gas stabilization, waste heating boiler, and bag filter. For each unit process, experimental approaches have been conducted to find optimal design and operating conditions. Especially, a pyrolysis is very important process in that it is a way of energy recirculation and minimizing the waste products. This paper presents major results of the most efficient operating conditions in a pilot scale pyrolysis melting incinerator.

• Proceedings of the KIPE Conference
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• 2016.07a
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• pp.175-176
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• 2016

기존의 태양광 시스템은 대체로 고정된 형태로 사용되었지만 태양광 시스템의 응용분야가 확장됨에 따라 전기자동차, 웨어러블 기기 등의 이동식 태양광 시스템 또한 많이 개발되고 있다. 이동식 태양광 시스템의 경우 불균일한 태양빛에 많이 노출되며, 이러한 불균일한 태양빛은 극심한 시스템 효율 저하를 야기한다. 본 연구에서는 이러한 시스템 효율 저하 문제를 해결하기 위해 differential power processing (DPP) 컨버터를 병렬로 적용한 photovoltaic (PV) 충전 가방을 제시하였다. DPP 컨버터는 PV 충전 가방이 불균일한 태양빛에 노출되어도, 각각의 태양전지가 고유의 최대 전력점에서 작동하도록 제어하는 역할을 한다. PV 충전 가방은 4개의 태양전지로 구성되어 있으며 충분한 태양빛 아래, 5 W의 출력전력을 가질 수 있다. PV 충전 가방은 하나의 front-end 컨버터와 4개의 DPP 컨버로 구성되었으며, P-SIM 시뮬레이션과 실험을 통해 front-end 컨버터와 DPP 컨버터의 정상 작동을 입증하였다. 또한 동일한 태양빛에 노출된 경우, 기존의 연결 방법 중 하나인 병렬 배열은 1.49 W의 출력 전력을 가진 반면, DPP 시스템은 4.35 W의 출력 전력을 가져 약 3배 높은 출력 전력을 확인하였다.

• The monthly packaging world
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• s.245
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• pp.98-112
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• 2013

친환경 디자인이란 환경과 생태적 측면을 고려한 제반 디자인 활동이나 경향을 의미하며, 최근 많은 기업체에서 친환경 제품이나 서비스를 통해 일반 소비자들과 소통하는 중요한 분야로 인식되고 있다. 따라서 본 연구에서는 백화점 쇼핑백 디자인의 재활용 여부와 경험, 횟수, 관심도, 조형성 평가를 통해 주요 3개국(한국, 일본, 미국) 백화점 쇼핑백에 대한 일반소비자들의 친환경적 소구에 대한 인식과 선호도 연구결과를 조사하는데 목적이 있다. 본 연구에서는 분석을 위해 연구범위를 주요 3개국 고급백화점으로 제한하였으며, 분석 대상업체의 개수를 한국 4업체, 일본 4업체, 미국 6업체 등 최종 3개국 14업체를 분석대상으로 선정하고 통계분석(spsswin18.O)하였다. 본 고는 한국브랜드디자인학회 통권 제24호에서 발췌했다.

• Journal of Fisheries and Marine Sciences Education
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• v.24 no.2
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• pp.166-179
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• 2012

This study shows how the service quality of port supply industry impacts with customer satisfaction and relationship orientation. Through previous research, service quality of port supply company is considered, at the same time, the key factor of service quality is divided into tangibles, reliability, responsiveness, assurance and empathy. Sample design is based on shipping companies which are registered in Korea Ship owners' Association and Korea Ship managers' Association from Aug. 8 through 26 in 2011. And total of 275 questionnaires are collected from shipping companies in Busan and Kyong nam. Result of this study would be utilized in marketing strategy for port supply industry. In the future research, based on analysis of port supply company's characteristics, the study for port supply industry which are perceived by customers could be conducted.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2012.04a
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• pp.82-87
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• 2012

Research and development of the spinning system which become bigger, faster and more detailed has been making progress continuously due to the increasing use of yarn which is considered as raw material to make industrial goods such as tire cord, air bag, filter, seatbelt and fiber-optic cable along with a remarkable growth of industry. In this paper, the desirable procedure and design requirements concerning a method of vibration reduction for "Godet Roller" considered as the main source of high vibration in the spinning system were suggested, and then verified those by analysis and actual test.