• 한국철도학회:학술대회논문집
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• 한국철도학회 2007년도 춘계학술대회 논문집
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• pp.69-72
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• 2007

In this paper, we describe the analysis of interior noise for tilting train that is being developed in Korea. Tilting train is made of composite material to reduce the car body's weight and attached a self-steering system on bogie to improve curving performance. However, the acoustic performance (Transmission Loss) of such material is worse than the materials of conventional train, such as aluminum, steel and so on. Therefore, we measure the transmission loss of side wall / floor of tiling train and predict the interior noise for tilting train using its measuring results

• Journal of Chest Surgery
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• 제46권4호
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• pp.312-315
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• 2013

In chest wall reconstruction after wide chest wall resection, the use of a musculocutaneous flap or prosthetic materials is inevitable for maintaining thoracic movement and a closed pleural cavity. We report a case of a 63-year-old male with a large invasive thymic carcinoma in the anterior mediastinum. The mass measured 6.8 cm and involved the sternum, left side of the parasternal area, ribs, and intercostal muscles. The patient underwent subtotal sternectomy, radical thymectomy, and reconstruction with biological mesh (Permacol). Successful chest wall reconstruction without any other complications was achieved, demonstrating the effectiveness of Permacol.

• 한국가스학회지
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• 제18권2호
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• pp.81-86
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• 2014

대형 LNG 내부 탱크의 내측 벽체에 가설되는 스티프너의 제작에 있어 판재 비용을 최소화하기 위하여 다양한 스티프너 규격에 따른 원 판재의 소요 중량과 비용을 분석하였다. 이를 위하여 판재 물량 산정 프로그램을 개발하여 자동화함으로써 설계자가 수작업으로 수행하는 물량 산정을 작업시간의 단축과 함께, 다양한 중량과 비용의 분석이 가능하도록 하였다. 분석결과, 판재 폭이 큰 것을 사용할수록 스티프너를 제작하는데 사용되는 원 판재의 총 소요개수, 중량 및 비용이 감소하였으나, 최적의 LNG탱크용 스티프너 판재 폭을 결정하기 위해서는 소요 판재의 중량과 함께 비용의 분석이 필요하였다.

• Journal of the Korean Wood Science and Technology
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• 제39권2호
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• pp.140-147
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• 2011

The strength properties of wooden retaining wall which was made with pitch pine were evaluated. Wooden retaining wall was made with diameter 90 mm of pitch pine round posts treated with CUAZ-2 (Copper Azole). The length of the front stretcher of the retaining wall was 3,000 mm. The distance between the headers (the notched member) is 1,000 mm in center and is 900 mm in side. There were connections every 2,000 mm because actually the length of stretcher is limited in the retaining wall. The strength test was carried out according to connection type because the section between stretchers can act as a defect. A result of the strength test according to connection type confirms that connection does not act as defect because the strength of retaining wall in single stretcher is similar to that in the section between stretchers. The strength test of the wooden retaining wall was carried out in 5 types according to the condition of the base section. When the upper soil pressure was 9.8 kN/$m^2$, the maximum load of the retaining wall fixing the front foundation shows higher values than those of others. But the total deformation is lower in the retaining wall not to fix a base section than in that to fix a base section. It is thought that the retaining wall not to fix a base section shows low value because the deformation is distributed throughout the retaining wall and it is confirmed that the soil pressure affects supporting the structure because the deformation of the retaining wall under low pressure is 3~4 fold higher than those of others. The failure mode of the retaining wall is the overturning type because the high section is deformed. Mostly, the failure mode is the separation of the header in the notched section.

• 농업과학연구
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• 제37권2호
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• pp.271-276
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• 2010

In this study, the light-frame wood shear walls according to the sheathing materials was carried out to investigate the shear load performance. Most common sheathing materials are the structural OSB and gypsum board used to consist wall of wood-frame house. Seven different type of specimens are composed of several sheathing materials and shear test was taken to evaluate shear performance by KS F 2154. As a result, shear walls(G12.5/G12.5 and G12.5/OSB) show that maximum shear strength and shear rigidity modulus are 7316N/mm${\cdot}$118.25 N/mm and 11129 N/mm${\cdot}$184.66 N/mm respectively. The shear wall using gypsum board 15mm improve maximum shear strength and shear rigidity modulus about 30%. The shear wall using 15mm gypsum board showed intermediate value in one side specimens. Different types of shear walls could be compared with the shear load performance. Also, nailed joint failure aspects are different to sheathing material and installing method.

• 한국지반공학회논문집
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• 제22권8호
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• pp.119-127
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• 2006

고로 수쇄슬래그는 선철의 제철과정에서 생산되는 부산물로서 자연 해성모래와 유사한 입자형상을 가지고 경량이며 큰 전단강도와 투수성을 나타낸다. 특히, 고로 수쇄슬래그는 시간경과와 더불어 경화하는 잠재수경성을 가진다. 따라서 고로 수쇄슬래그가 안벽이나 옹벽의 뒷채움 재료로 사용 되어졌을 때, 경화에 의한 전단강도의 증가로 토압감소가 기대되며, 결과적으로 항만구조물의 건설비용이 감소하게 된다. 본 연구에서는 모형토조를 이용하여 고로 수쇄슬래그와 Toyoura sand에 대해 토압, 벽 마찰력, 가동벽체 표면에서의 토압분포를 측정하는 모형실험을 실시하였다. 실험에서 상대밀도는 25%, 55% 및 70%로 설정하였으며 벽체는 저점을 중심으로 주동 및 수동토압측으로 회전시켰다. 벽체 상부에서의 최대 수평변위는 ${\pm}2mm$로 설정하였다. 모형실험 결과, 고로 수쇄슬래그에서 얻어진 주동토압이 Toyoura sand보다 작음을 알았다.

• 한국철도학회논문집
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• 제10권4호
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• pp.405-408
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• 2007

In this paper, we describe the analysis of interior noise for tilting train that is being developed in Korea. Tilting train is made of composite material to reduce the car body's weight and attached a self-steering system on bogie to improve curving performance. However, the acoustic performance (Transmission Loss) of such material is worse than the materials of conventional train, such as aluminum, steel and so on. Therefore, we measure the transmission loss of side wall/floor of tiling train and predict the interior noise for tilting train using its measuring results.

• Restorative Dentistry and Endodontics
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• 제38권2호
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• pp.85-89
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• 2013

When a patient with a fractured anterior tooth visits the clinic, clinician has to restore the tooth esthetically and quickly. For esthetic resin restoration, clinician can use 'Natural Layering technique' and an index for palatal wall may be needed. In this case report, we introduce pre-restoration index technique on a Class IV defect, in which a temporary filling material is used for easy restoration. Chair-side index fabrication for Class IV restoration is convenient and makes a single-visit treatment possible.

• 한국실내디자인학회논문집
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• 제21호
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• pp.121-128
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• 1999

The purpose of this study is to provide practical guide for the Preference of exterior design in Apartment. The data is collected through questionnaire survey including observations and interviews. The sample consists of 229. The data is analyzed by using SPSS-PC. The major findings are as follows. (1) Most of residents recognize the importance of exterior design of apartments. (2) Most of residents are satisfied with the exterior design such as building form, color, and material and not satisfies with environment of apartments. (3) The most preferred color of Apartment is white as primary color and green as secondary color. (4) The most preferred color pattern is vertical type as facade, horizontal type as the back wall, super graphic and geometrical type as the side wall. (5) The preferred exterior images are modern, simple, and unique style.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회A
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• pp.464-468
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• 2008

In most of the passenger side airbag door in hard type IP today is designed with invisible tear-seam line. In order to design the tear-seam invisible, the tear-seam must be designed with required RWT (residual wall thickness) that is just thick enough to be broken by the PAB pressure on deployment and not by other surrounding impact forces. Hence, keeping the right optimum opening force is very important, and finding the right RWT became the key in designing the tear-seam. The study conducted in this paper describes the search for the optimum RWT around the tear-seam by using finite element method and the optimum RWT is suggested for milling type tear-seam having V-shape cross-section.