• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1999년도 춘계학술대회논문집
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• pp.111-114
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• 1999

The twisting and extrusion process of the product with involute helical fin from the round billet is developed by the upper bound analysis. The twisting of extruded product is caused by the twisted die surface connecting the die entrance section and the die exit section linearly. In the analysis, the internal shear surface is defined as the curved twisted plane from the taisting of die surface and the shear work is calculated by the consumption of shear energy The increase rate of angular velocity is determined by the minimization of plastic work. The results of the analysis show that the angular velocity of the extruded product increases with the die twisting angle, the reduction of area, and decreases with the die length, the friction condition.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2001년도 봄 학술발표회 논문집
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• pp.121-128
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• 2001

This is a case study of stability analysis and reinforcement design for the tunnel where the collapse of the entrance slops occured along the fault zone developed in the bed rock. According to the site investigation, the main factor of sliding is the influence of fault gouge and heavy rainfall. Considering the in-situ condition, the versatile reinforcement methods is needed, and so the close investigation on the site area was accompanied with the stability analysis of tunnel and slops. The FRP(Fiberglass reinforced plastic) grouting method improved the defect of Steel Umbrella Arch Method, such as oxidation, low work efficiency, the material's heavy weight, is adapted as the reinforcement methods.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2004년도 추계학술대회 논문집
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• pp.67-73
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• 2004

The aim of this study is to analyze the tendency of the interior materials used for the apartment units of Mixed-use Apartment. One hundred fourteen cases of 15Mixed-use Apartment which were completed or under construction in Seoul and Bundang area before and after the year 2000 were the examples of this research. For the purpose of this research, following contents were analyzed accordingly. 1. The units were devided into entrance, living room, kitchen, bedroom and bathroom; and finishing material of the floor, wall and ceiling of each individual space were analyzed. 2. The units was categorized into three floor spaces(py) such as 30-49py, 50-70py, 80py and above. And each interior material of different floor spaces(py) were analyzed.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 2009년도 IWAIT
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• pp.699-702
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• 2009

This paper proposes a gender identification using shoeprint images. It is difficult for the proposed method to identify an individual if shoeprint images for identification leaked out. Because the proposed method identifies gender without the faces, the type of dress and the hair types images. Therefore we can use safely the proposed method in public place. In addition, a sensor mat which we developed is reasonable to use mechanical switches arranged in a matrix pattern without pressure switches. We had shoeprint images with the sensor mat. We measure feature parameters from shoeprint images. The feature parameters are length, width and area of shoeprint. Utilizing the feature parameters, we identified gender. In order to verify the gender identification rate of the proposed method, we set up the sensor mat at an entrance of buildings and took shoeprint images of 100 men and 100 women. As a result, we achieved about 86 percent of the gender identification rate.

• 한국농촌건축학회논문집
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• 제9권2호
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• pp.103-111
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• 2007

After researching 154 rural areas named 'valley' in Goesan County, Chungbuk Province, they are classified by 2 two classes. Firstly, villages located on the crossways valley are 109 of 154, they are located on the valley which is at right angles with a direction of light of a mountain range. A closed valley location is placed in the deep valley against a background mountain range. It is divided with closed large valley and small valley. Secondly, an open valley location style is 45 of 154. It means the villages are paralleled with a direction of mountain and located with same direction of entrance.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.652-656
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• 2004

Crashworthy design of trains is now indispensable procedure in modern railway vehicle design for ensuring the safety of Passengers and crew. It is now widely recognized that a more strategic approach is needed in order to absorb higher level energy in a controlled manner and minimize passenger injuries effectively. The first design step in this strategic approach is the design of the front end structure(so called HE extremities) to absorb a large part of total impact energy and then the structure of passengers non-accommodation zones(so called LE extremities) is designed to absorb the rest of impact energy. In this paper, the passengers entrance door area is selected as the LE(low energy) extremities and the design of the LEE was carried out. The main part of LEE design procedures is the design of energy absorbing tubes. For this purpose, the several tube candidates are introduced and compared to each others with numerical crash simulation.

• 한국주거학회논문집
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• 제15권1호
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• pp.195-204
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• 2004

This study was carried out to understand the architectural characteristics of farmhouse among the commons house. The subject of study are selected the seventeen farmhouse built 50-60 years ago at Hyunri in Munkyung. It was analyzed and classified the architectural characteristics of plan and arrangement at a farmhouse. In conclusing, their farmhouses are appeared the different characteristics in comparison with other area. With the arrangement of building and composition of plan, it was discovered that it connotes an idea of the confucian ideas from separation of the inside and outside space; men and women. Also, it was found that it has become to the rational separation of spaces from location of entrance, division of the outside space(Madang) and arranged space of inside at farmhouse.

• 한국농촌건축학회논문집
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• 제15권3호
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• pp.9-16
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• 2013

This paper aims to clarify the residential quarter organization and housing spatial form of fishing village in Jeonjang-po, Imja-do Island. The results are as follows. First, the place of residence in Jeonjang-po was located in the place having the south and the north seaside, and the road system was presented by form to connect the north and south. Second, the alley of these north and south direction has a dynamic scenery, but the alley of east-west courses has a horizontal scenery. Third, it is a characteristic that there is very more plottage than the building area of the residential quarters. The reason that plottage has a big is because inner court in the residential quarters are used as places such as the fishery works and the vegetable gardens. Finally, the fishing village house in Jeonjang-po is 4-bay type building is typical type when seeing from the front, and is to have entrance hall at the front of building.

• Bulletin of the Korean Chemical Society
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• 제27권1호
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• pp.53-58
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• 2006

A powder of destructive adsorbent was prepared by impregnating Mn and Cu on the surface of amorphous aluminosilicate. It catalytically dimerized tert-butyl mercaptan into di-tert-butyl disulfide on its surface. Turnover of the dimerization was strongly dependent on the surface morphology of the adsorbent, which could be altered by modification of aluminosilicate support. During the process of impregnation, which involved heat treatment at 500 ${^{\circ}C}$, the shape of the pore was preserved, though large fraction of micropores were eliminated. The reactive sites on the surface were poisoned as dimerization products strongly adhered on them. Therefore, high surface area was not always desirable. When the surface was heavily populated with “inkbottled” pores with a narrow entrance in uniform size, heavy poisoning of the reactive sites turned the destructive adsorbents almost useless.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2005년도 추계학술대회 논문집
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• pp.97-100
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• 2005

The handicapped as a member of a society should possess the same opportunity of a perfect participation in public affairs and an equal opportunity in parity of treatment. All sorts of physical and social barriers surrounding the handicapped who can not having a impairment and disability give a less chance to have a share in their society. Therefore, this discrimination barriers must be phased off not only by handicapped but also by normal social members so as to perfect and free access to movement, all of social institution and social activities. Therefor, this paper provides a basic data which conducts investigation and analysis on the outdoor access environment for the handicapped's easy access to public building or facilities. It would be most import rules to make a decision between improvement rate and object for public building or public facilities.