• 한국화재소방학회논문지
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• 제23권1호
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• pp.40-47
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• 2009

현재 철골부재의 내화성능 확보를 위해서 다양한 내화피복방법이 적용되고 있으며, 따라서 이중 하나가 내화도료 피복 시스템의 적용이다. 하지만 내화도료 시스템의 경우 시공후 시간경과에 따라 균열, 탈락 등에 의한 내구성 저하 및 이에 따른 내화성능 상실의 우려가 있으며, 이에 따라 건축 설계 및 시공 초기에 시간경과에 따른 내구성 변화를 파악하여 이에 대비할 수 있는 평가방법 및 유지관리 등에 대한고려가 필요하다. 이에 본 연구에서는 시간경과에 따른 내화도료의 내구성 평가 및 이에 대한 관리방안을 제시하기 위하여 영국을 비롯한 기타 국가의 관련 자료를 조사하여 국내에 적용할 수 있는 내화도료 내구성 평가방법 및 유지관리에 필요한 기초 자료를 제시하도록 하였다.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2009년도 추계 학술논문 발표대회
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• pp.113-116
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• 2009

This study analyzed fire-resistant characteristics according to changes in repair methods of PFH mixed high-strength concrete roof structures having undergone fire damage. The results of the study are as follows. First, as a repulsive characteristics of structures, the remaining repulsion was shown to increase following fire-resistance tests according to increases in depth of coverings. The results of the relationship between depth of coverings and remaining repulsion rates following fire-proofing tests showed a high correlation. At a covering depth of 67.3mm, remaining repulsion rate was estimated to be 100%. For fire-resistant characteristics following repairs of structure, as for spalling, severe separation was shown in the case of general plaster while general plaster + Metal Lath showed overall superior spalling prevention. For internal structure temperatures, general plaster showed max temperatures of 705℃, average temperatures of 636℃ while general plaster + metal lath showed max temperature of 660℃ and average temperature of 520℃, demonstrating lower temperature distributions than use of only general plaster. In conclusion, after removing the covering of structures damaged due to high temperatures of fires within high-strength concrete installations, the use of fire-resistant mortars and applying metal laths on surfaces of general plaster will provide superior fire-resistance performance in the occurrence of a 2nd fire.

• 한국주거학회논문집
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• 제16권4호
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• pp.57-64
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• 2005

The purpose of this paper is to find out and to show that the probability of the adaption of YURAGI theory of wall covering in interior design. By using personal computer, visible image of wall covering is inputted to a computer program as 'bmp' file, Windows bitmap file format, for Fourier transform. The evaluation indexes such as 'Map', 'YURAGI coefficient', 'Rest error', and 'Linearity' are defined to display the analytical result. The result of this study is shown by visual image and numerical value. As a result of this paper, we can understand that the psychological evaluations about wall coverings are different according to the YURAGI coefficient which came out by fluctuation analysis method as YURAGI theory. So, now we are able to know that the adaptation of YURAGI theory is very useful at psychological evaluation about wall covering.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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• pp.43-44
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• 2002

Langmuir-Blodgett mono- and multilayer films from 2,4-heneicosanedione have been examined as lubrication coatings In the process of wear. Tribological properties of the films have been studied by atomic force microscopy and microtribometer. It has been observed that the wear resistance of silicon surface coated with OTS/LB multilayer system increased by several orders of magnitude compared to uncoated surfaces at low normal load. The results obtained suggest that the system constructed on silicon surface reduces surface energy, friction coefficient and increases life of substrate due to a possibility of LB film self-repairing during frictional contact.

• 호남수학학술지
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• 제35권3호
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• pp.515-524
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• 2013

To study product properties of digital spaces, we strongly need to formulate meaningful adjacency relations on digital products. Thus the paper [7] firstly developed a normal adjacency relation on a digital product which can play an important role in studying the multiplicative property of a digital fundamental group, and product properties of digital coverings and digitally continuous maps. The present paper mainly surveys the normal adjacency relation on a digital product, improves the assertion of Boxer and Karaca in the paper [4] and restates Theorem 6.4 of the paper [19].

• 한국재난정보학회 논문집
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• 제3권2호
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• pp.23-35
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• 2007

Recently, for places with poor vegetating environment, such as slopes made of weathered soil or rocks, erosion tranquilizers, coverings and composite fertilizers have been mixed with seeds and sprinkled onto soil. Also, these plant revegetations have been mixed with nets and used to strengthen cohesion. However, this technique often obstructed plant growth and caused pollution because of not decomposing nets. This study has tested influence on plant revegetation B for slope of weathered soil and rocks and decomposition of naturally decomposing polyester filament yarn. In result, it was showed that plant revegetation B does not harm environment in case of applying it to soil slope and enhance protection capacity of slopes as time goes by. Also, naturally decomposing polyester filament yam was analyzed its physical properties with the passage of time and was known that naturally decomposing polyester filament yarn transformed into a structure easy to decompose by hardening. Thus it is considered that the revegetation method used this study was very effective method for plant establishment and stability of slope.

• 복식문화연구
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• 제3권2호
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• pp.193-199
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• 1995

The purpose of this research was to study the origins and the meanings of the Kokal (고깔). Comparative linguistic analytical approaches were employed to trace the development of the word, the Kokal(고깔). Results of this study revealed that the kotkal(곳갈, 곧갈) was a general term referring to a variety of head coverings in eh period of Choson Dynasty. This broad meanings of the Kotkal(곳갈,곧갈) of the Chosun Dynasty period has been changed to a narrow sense meanings a conical cap made of folds of the material, mainly used by some of the Buddhist monks in modern Korean. Also, the phonetic value of the Kotkal(곳갈,곧갈) of the Choson Dynasty period changed to the Kokal(고깔) in modern Korean. A variety of words for the Kokal(고깔) was found in the different languages such as Latin, English, French, Turkish, German, Mongolian, and Chinese. The examination and analysis of this study indicated that the origin of the Korean word Kotkal(곳갈,곧갈) or Kokal(고깔) and the meanings of it were derived from LL. Cuculla(monk's cowl)

• 대한수학회지
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• 제43권5호
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• pp.991-1018
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• 2006

Hypermaps are cellular embeddings of hypergraphs in compact and connected surfaces, and are a generalisation of maps, that is, 2-cellular decompositions of closed surfaces. There is a well known correspondence between hypermaps and co-compact subgroups of the free product $\Delta=C_2*C_2*C_2$. In this correspondence, hypermaps correspond to conjugacy classes of subgroups of $\Delta$, and hypermap coverings to subgroup inclusions. Towards the end of [9] the authors studied regular hypermaps with extra symmetries, namely, G-symmetric regular hypermaps for any subgroup G of the outer automorphism Out$(\Delta)$ of the triangle group $\Delta$. This can be viewed as an extension of the theory of regularity. In this paper we move in the opposite direction and restrict regularity to normal subgroups $\Theta$ of $\Delta$ of finite index. This generalises the notion of regularity to some non-regular objects.

• 한국실내디자인학회논문집
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• 제11호
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• pp.64-69
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• 1997

The purpose of this study was to examine the current interior conditions of children's rooms and to suggest theplanning guidelines of children's rooms. Data were collected through questionnaire survey including measurements and observations. The sample consisted of 291 households with the 3-5 years old children in Pusav. Data were analyzed by using SPSS-PC. The major findings were as follows : 1) It was found that most of children lived in small rooms. Considering their furnitures and equipments, the size of children's rooms should be 10-13 $m^2$. 2) Children's rooms should be closed to their parent's room and living room to take care of children and far from kitchen, balcony, diming room to prevent hazards. 3) Interior finishings such as wall papers, floor coverings should be chosen to consider the children's tastes and their preferred styles. 4) The types of furniture arrangement were divided by 5 types: one wall type, parallel type, ㄱ type, ㄷ type, ㅁ type. 5) The local lighting such as task lighting for studying and playing night lamp for sleeping should be used.

• 한국실내디자인학회논문집
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• 제14호
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• pp.33-41
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• 1998

The purpose of this study was to identify the characteristics of residential interior design according to social classes in Korean television dramas. To achieve the study purpose content analysis through slides and video tapes was used. Eighty three houses out of twenty eight dramas from 1990 to 1996 were classified into three classes ; upper class middle-upper class middle-lower class. Those houses were analyzed based one the five review points : total interior images finishing materials window treatments furniture and accessories. The results of the study were as follows ; (1) In the general characteristics of the house in Korean television dramas there were distinct differences in age job of householders and house types by classes. (2) In the characteristics of living-room interior design in the television dramas there were distinct differences according to social classes in interior images floor coverings furniture styles and accessories. (3) In the characteristics of master bedroom in the television dramas there were a little differences according to classes. (4) In the characteristics of kitchen and dining room in the television dramas there were differences according to classes