• Proceedings of the Korea Concrete Institute Conference
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• 2009.05a
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• pp.525-526
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• 2009

On this paper we induce calcite($CaCO_3$) precipitation using microbial biomineralization of the Sporosarcina pasteurii and evaluate required performance evaluation by adjusting it to mortar. As a result carbonation normal mortar test piece(C3S-W) and mortar test piece(C3S-S.p) mixed with Sporosarcina pasteurii, reaction of C3S-S.p was late than C3S-W. Also, in the case of carbonation experiment of C3S-S.p curing in the Urea-CaCl2 aqueous solution(Medium) during 28days and durability of the C3S-W, durability of the mortar test piece(C3S-S.p) mixed with Sporosarcina pasteurii become higher than normal mortar test piece(C3S-W).

• Journal of Fashion Business
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• v.9 no.1
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• pp.79-88
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• 2005

The purpose of this study is to propose the design of the patient's clothes for a disabled child between 4 and 6. For this, in this study, I would present the following design plan which includes 3 upper garments, 2 trousers and a one-piece dress. In case of the damage on head and neck, a neck line should be deep and wide thereby providing ease to the clothes. To facilitate injection and dressing/undressing, there should be parting from neck to cuff which can be fixed by snap or button. By rolling up sleeves with strings inside the cuffs and fixating plaster cast with snap button outside the cuffs. In case of body cast with plaster cast around body part, front adjusting part should be wider and the width should be adjusted with strings. In case of hip spica cast which covers waist, I separated front part and rear part, fixated them with snap buttons, gave more width to front adjusting part with strings to adjust width, which constitute one-piece dress. In case of shoulder spica cast, the other shoulder which is not covered with plaster cast should be exposed, and to prevent clothes' coming down, strings with snap button or velcro should be attached over a shoulder so that the length of the strings can be adjusted. In case of applying plaster cast or aid to the whole part of a leg, one part of trousers should be shorter so as to expose the injured part and there should be a parting with strings or velcros on the side for easy dressing/undressing. When plaster cast or splint is short, The strings are meant to adjust length of trousers. The partings are located 2 cm from side lines toward the center.

• Journal of the Korean Society of Marine Environment & Safety
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• v.27 no.1
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• pp.145-152
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• 2021

The purpose of this study was to determine the optimal distances between pipes to minimize the pressure loss and turbulent intensity. This was accomplished by investigating the distances between sleeve-jointed pipes and the flow changes in pipes based on variations in the Reynolds (Re) number when installing adjusting pieces for the pipes. When the thickness tp of the sleeve-jointed piping was fixed at 5 mm and the pipe lengths Lp were 10, 50, 100, and 200 mm, the correlations with the velocity of the sleeve-jointed part, pressure distribution, length of the reattachment point in the recirculation area, and Re number were analyzed. The flow characteristic of the sleeve-jointed part from a laminar to a turbulent flow region was determined by setting the Re range to 200 ≤ Re ≤ 5,000. This was done by utilizing Ansys Fluent 18.1, which is a commercial program. The enlargement and contraction ratios of the sleeve-jointed part were 1.2 and 0.83, respectively, and the turbulent intensity of the sleeve downstream edge and pressure change both increased as the Re number increased while Lp remained constant. The fact that the flow on the sleeve wall surface was disturbed by tp resulted in losses in velocity energy. Therefore, the edge of the sleeve-jointed part was also effected. When Lp was 10 mm or less, the turbulent intensity of the edge part did not change significantly as the Re number increased. The reattachment point in the recirculation area did not appear at Lp of 10 mm or less and was not affected by the vortex. In the case of 3,000 ≤ Re, the reattachment length of the wall surface of the sleeve-jointed part was nearly constant as Lp increased.

• Journal of the Korea Fashion and Costume Design Association
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• v.2 no.2
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• pp.55-79
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• 2000

This study is the design research for the practical use of Casual Hanbok. The conclusion of basic research for Casual Hanbok design reads as follows. Today's college women are fairly positive to the practical use of Casual Hanbok. Especially, they are strongly interested in the new design and have the active intention to wear it on actually. The concrete design of every parts of Casual Hanbok which is wanted by college women is as follows. Firstly, college women like well matched two-piece dress style in colors. And they want to decide the coloration independently than to follow the traditional coloration passively. Secondly, according to the design of jacket, sometimes they like the presence of a collar, a collar strip, a gore etc. and at other times they like absence of them. Thirdly, the side line of jacket they like and the seam line of sleeve they like is smoothly curved one and the adjusting means they like is a fancy button. Fourthly, the length of jacket they like reaches to their waist and the width of an armhole they like must be convenient for moving of arm. Fifthly, one out of two college women likes mixed spinning fabrics as material for jacket, skirt, pants. In the other hand, one out of five college women likes cotton. Sixthly, the skirt style they like is A ­line one having from two to four gathers on the waist and the length of skirt they like reaches to their ankle or calf of the leg. Seventhly, the pants style they like is the western style but the hem line of pants is the korean traditional pants style.

• Journal of Fashion Business
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• v.22 no.5
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• pp.113-124
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• 2018

This study is to find ways to use fast-fashion wedding dresses continuously which usually have worn three or four times and just wasted, which is an current interesting issue over the society. Among clothing from the 19th Century, three styles of Empire, and Crinoline were analyzed from their underwear styles to outwear styles through library and museums and are made for rental service. Based on 8-year-old girls' physical dimensions, openings and closing methods of each size were applied to develop and make rental dress designs. It will be a good opportunity to study history and develop creativity if children can try different styles of dresses from different cultures and times and also experience difference wearing ways as they also have such desire. Underwears were designed to be worn by adjusting cloth rings, rubber bands, or hook and eye to fit different dimensions. The final products are as follows. First, empire dress doesn't need underwear to wear. Depending on the purpose of the rental dress, the back side of upper clothes have lace up by using cloth rings like empire style. Skirt was cut to use hem lace suitably from wasted dress. Second, Crinoline dress is usually configured of Crinoline, Petticoat, Two Piece on Drawers, Chemise, and Corset. It was designed by flat front, bigger sides and backs by Crinoline and Petticoat.

• Korean Journal of Applied Biomechanics
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• v.17 no.4
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• pp.83-88
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• 2007

The purpose of this study was to investigate the ball velocity changes depending on the different linear momentum of putter head. For this study, two different moving conditions(25cm free fall and 35cm free fall) of putter head were set. And two different types of ground conditions were used which are artificial grass green($180cm{\times}600cm{\times}1cm$) and glass green($40cm{\times}130cm{\times}1cm$). Movements of putter head and ball were recorded with 2 HD video cameras(60 Hz, 1/500s shutter speed). Small size control object($18.5cm{\times}18.5cm{\times}78.5cm$) was used in this study. Ball and putter head velocities were calculated by the First Central Difference Method(Hamill & Knutzen, 1995). Linear momentum of ball and putter head were calculated with mass and its velocities. Before impact, the velocity of the putter head of 35cm free fall was about 30% greater than that of the putter head of 25cm free fall. Linear momentum of putter head of 35cm free fall was about 0.355-0.364kg m/s and 25cm free fall was 0.251 kg m/s. After impact, putter head lost its linear momentum about 14-19% and adjusting time of putter head after impact would be 0.1 second. After 0.1 second, putter moved the route same as before impact. Maximum ball velocities were appeared 0.08s-0.10s after impact no matter what the ground conditions are. Ball velocities struck by 35cm free fall were 30 % faster than 25cm free fall. Linear momentum of ball struck by putter head was greater than that of expected amount because the moving ball has translational energy and rotational energy. Future study must treat three things. One is ball must struck by the different putters with different materials. Another is two-piece ball and three-piece ball should be used for the same condition studies. The other is height of center of rotation of club should be changed. In this study, the height of center of rotation of club head is 71cm from the ground. But recently many golfers used the long putter. Therefore next study should apply the different height of center of rotation of club head.