• 한국산학기술학회논문지
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• 제16권4호
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• pp.2899-2905
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• 2015

본 논문은 지반 조건에 따른 족저압의 압력분포에 대한 연구이다. 실내화, 실외화, 걷기화, 운동화의 네 가지 카테고리의 신발이 본 연구에 사용되었으며, 260mm(유럽 코드 EU40)를 착용하는 45명의 20대 남성을 대상으로 콘크리트, 모래 지반에서의 실험을 실시하였다. 보행 시 응력과 압력의 측정은 Techstorm사의 Insole System을 사용하여 측정하였으며 발의 발가락, 전족, 중족, 후족 네 가지 영역에서 족저압을 측정하였다. 연구 결과 신발과 지반 조건에 따라 다른 응력 및 압력의 분포를 나타냈으며 본 연구 결과는 모래 지반에서 착용 가능한 신발의 개발에 유용하게 사용될 것으로 기대된다.

• 산업경영시스템학회지
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• 제38권4호
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• pp.184-192
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• 2015

Korea has already entered into an aging society. In recent decades, the health problems for seniors has received considerable interest. We often see the elderly who have been struggled from discomfort or illness of the foot. Those foot related problems mainly cause from the use of improper shoes. Recently, shoe makers sell the shoes for seniors, so called comfort shoes, but the shoes are too expensive for seniors to buy easily. In this paper, we develop cheap insoles for seniors as an alternative of the comfort shoes and suggest the systematic process for the insoles development. This systematic process is as follows: 1) Survey the literature about the market of insole, 2) Investigate the standard size of body and foot for the seniors in Korea, 3) Analyze the customer needs by survey, 4) Study the walking pattern by experiments, and 5) Develop the novel insole for the seniors to relieve the inconveniences related with foot. From the newly developed insoles, the company B gains the sales increasing effect approximately 30% over through the increase in consumer satisfaction and company reputation and secures for intellectual property rights. Using the database from Korea Research Institute of Standards and Science, the reliability of developing technology of the functional insole has been obtained. The seniors are also enable to choose an alternative of comfort shoes for foot health. In the future, the insoles developed from this study have wide applications in the medical, cosmetic fields, and leisure sports fields. Accordingly, it seems to require more systematic studies utilizing Walk Analyzer and Foot Pressure Meter.

• Advances in concrete construction
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• 제16권6호
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• pp.291-302
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• 2023

As the first part of the body that strikes the ground during running, sports shoes are especially important for improving performance and reducing injuries. The use of new nanotechnology materials in the shoe's sole that can affect the movement angle of the foot and the ground reaction forces during running has not been reported yet. It is important to consider the material of the sole of the shoe since it determines the long-term performance of sports shoes, including their comfort while walking, running, and jumping. Running performance can be improved by polymer foam that provides good support with low energy dissipation (low energy dissipation). Running shoes have a midsole made of ethylene propylene copolymer (EPP) foam. The mechanical properties of EPP foam are, however, low. To improve the mechanical performance of EPP, conventional mineral fillers are commonly used, but these fillers sacrifice energy return. In this study, to improve the magnificence of physical education training with nanotechnology, carbon nanotubes (CNTs) derived from recycled plastics were prepared by catalytic chemical vapor deposition and used as nucleating and reinforcing agents. As a result of the results, the physical, mechanical, and dynamic response properties of EPP foam combined with CNT and zinc oxide nanoparticles were significantly improved. When CNT was added to the nanocomposites with a weight percentage of less than 0.5 wt%, the wear resistance, physical properties, dynamic stiffness, compressive strength, and rebound properties of EPP foams were significantly improved.

• 융합정보논문지
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• 제9권8호
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• pp.140-147
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• 2019

본 연구의 목적은 비보이들이 선호하는 기존 신발 5종류를 대상으로 인간공학적 사용성 평가를 통하여 최적신발제작을 위한 생체역학적 변인을 규명하는 것이다. 실험대상자는 전문가 10명, 비전문가 10명이 참가하였고, 자료획득을 위하여 적외선카메라 12대(Qualisys, Oqus), 지면반력기(Kistler, 9286AA)와 족저압력기(Zebris Gmbh, Zebris PDM-System)를 사용하였다. 연구결과는 다음과 같다. 첫째, 접지능력과 안전성 면에서 마찰계수 0.38, 자유모멘트가 $0.32N{\cdot}m/kg$인 P사 신발이 바람직하다. 둘째, 쿠션면에서 충격량이 숙련자, $2.51N{\cdot}m/kg$과 비숙련자, $2.86N{\cdot}m/kg$인 N사 신발이 적절한 것으로 나타났다. 셋째, 보행균형성은 전족부의 평균 족저압력이 10.11 KPa(우측), 10.05 KPa(좌측)인 C사 신발, 후족부의 평균 족저압력이 8.40 KPa(우측), 8.36 KPa(좌측)인 V사 신발 적정하다고 판단된다. 결론적으로 접지능력과 안전성은 P사, 쿠션면은 N사와 보행 균형성은 C사와 V사 신발들의 구조와 재질을 조합한 신발을 개발하여야 한다.

• 한국의류산업학회지
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• 제4권2호
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• pp.176-187
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• 2002

The aim of this research is to establish basic materials for fashion merchandising by observing the street fashion of the juveniles and by analyzing their wearing, coordination and fashion trend. We have taken the photograph of the street fashion of 202 male teenagers and 265 female teenagers in Busan, and analyzed in the category of style, item, color, pattern, materials, hair style, shoes and accessories. We have concluded that the most frequent items were shirts (male), turtle neck (female) and jeans. The main style was casual just as jumper-look, sweater-look, gardigan-look. The typical female fashions that were hip-hop-look, twin neat-look, trench coat-look, were more various than male. For the color coordination, contrast color coordination was more dominant than similarity color coordination. Dominant patterns were solid, and also check and stripe patterns were frequently found in upper garment. The representative materials were soft for upper garment, and hard for trousers. Male teenagers prefer middle-length hair style and female teenagers prefer long hair style. The juveniles in Busan are wearing sports shoes and leather shoes in similar frequency. Their favorite accessories are bag, muffler and hat.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2019년도 춘계학술대회
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• pp.516-517
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• 2019

3D 프린팅 기술은 가상 혹은 평면에 설계된 디자인을 입체적으로 출력이 가능하다는 점에서 핵심적 기술로 주목받아 오고 있다. 본 연구는 슈즈에 관한 개념을 1차적으로 정리하여 일반적 제조과정을 분석하고, 3D 프린팅이 적용된 슈즈제작과정을 제시하고, 생산되는 슈즈 사례들을 브랜드별(스포츠 브랜드, 디자이너 브랜드)로 구분하여 맞춤형 제작 특성을 연구하였다. 사례 분석을 통해 3D 프린팅 슈즈의 4가지 디자인 제작 특성을 도출했다. 따라서 본 연구는 향후 3D 프린팅을 활용한 슈즈디자인 영역에서 보다 심화된 창조적 발상의 근거를 제시할 것으로 사료된다.

• 생명과학회지
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• 제18권12호
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• pp.1775-1778
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• 2008

본 연구는 태권도 전문 기능화 개발을 위한 제안으로서 고급기술의 사용과 기능을 고려하여 회전력이 강화된 전문태권도화의 운동역학적인 특징을 분석하고자 하였다. 연구방법은 2가지 태권도화 종류를 이용하여, 텐션마찰계수 측정계와 지면반력기를 이용하여 얻은 결론은 다름과 같다. 정적마찰계수 비교는 A사 0.60, M사 0.61로 나타났다. 모멘트(회전 마찰력) 비교는 M사 태권도화가 회내(3.23Nm), 회외(2.70Nm) 모두 A사 태권도화 회내(3.20Nm), 회외(2.62Nm) 보다 높게 나타났다. 지면반력 비교는 Fz의 값은 세가지 조건에서 각각 유의한 차이가 있는 것으로 나타났으며(p<0.05), Fy의 최고의 힘은 세가지 조건에서 유의한 차이가 없는 것으로 나타났다. Fx 보다 앞서 나타나는 피크의 형태를 보여주고 있다.

• 한국운동역학회지
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• 제15권4호
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• pp.153-168
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• 2005

The purposes of this study were to determine the influence of midsole hardness and sole thickness of sports shoes on ball flex angle and position with increment of running velocity. The subjects employed for this study were 10 college students who did not have lower extremity injuries for the last one year and whose running pattern was rearfoot striker of normal foot. The shoes used in this study had 3 different midsole hardness of shore A 40, shore A 50, shore A 60 and 3 different sole thickness of 17cm, 19cm, 21cm. The subjects were asked to run at 3 different speed of 2.0m/sec, 3.5m/sec, 5.0m/sec and their motions were videotaped with 4 S-VHS video cameras and 2 high speed video cameras and simultaneously measured with a force platform. The following results were obtained after analysing and comparing the variables. Minimum angle of each ball flex position were increased with the increment of running velocity and shoe sole thickness(P<0.05), but mid-sole hardness did not affect minimum ball flex angle. The position which minimum angle was shown as smallest was 'D'. Midsole hardness and sole thickness did not affect time to each ball flex minimum angle, total angular displacement of ball flex angle, and total angular displacement of torsion angle(P<0.05). The position which minimum angle was appeared to be earliest was similar at walking velocity, and E and F of midfoot region at running velocity. Total angular displacement of ball flex position tended to increase as shifted to heel. It was found that running velocity had effects on ball flex angle variables, but shoe sole thickness partially affected. It would be considered that running velocity made differences between analysis variables at walking and running when designing shoes. Also, it was regarded that shoes would be developed at separated region, because ball flex angle and position was shown to be different at toe and heel region. It is necessary that midsole hardness and thickness required to functional shoes be analyzed in the further study.

• 대한안전경영과학회지
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• 제15권4호
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• pp.153-160
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• 2013

The purpose of this study was to compare biomechanical factors on badminton shoes between anti-slip outsole and non anti-slip outsole. Six subjects participated in this experiment. For three-dimensional analysis, eight cameras (Oqus 3series, Qualisys) were used to acquire raw data, and then the parameters were calculated and analyzed with Visual-3D. In conclusion, the patterns of spent time during side step, and maximum velocities of CoGs were consistent without joint angles of lower extremities in spite of small differences. Those of GRFs, and moment of lower extremities were absolutely consistent. This trend of biomechanical factors was that Y shoe (ante-treatment) was much greater and PS shoe (treatment) was greater than Y shoe (treatment). (That was, Y shoe (ante-treatment) > PS shoe (treatment) >Y shoe (treatment)). The findings of this study showed that anti-slip outsole was effective and brought increasing performance and decreasing injuries. It is suggested that further study of these phenomena will help understand many aspects of human locomotion, including work, performance, fatigue and possible injuries.

• 한국의상디자인학회지
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• 제11권3호
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• pp.59-72
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• 2009

The purpose of this study was to establish objective data for marketing of industries and product development design by researching popular singer fashion of Korea, investigating the preference for popular singer design in street fashion among adolescents on the basis of the research, and drawing an conclusion. To analyze street fashion, total 190 young men and women in their 20s, including teenagers, were surveyed mainly in downtowns around Daehakro, Gangnam and Hongik University. First, in relation to the upper garment, men were found to wear T-shirts and hood T-shirts the most, while women were found to wear T-shirts and one-piece dress the most. Second, in relation to the lower garment, the ratio of those who wore skinny clothes was high both among men and women. Third, in relation to the outer apparel, the ratio of men who wore casual jacket and hood zip-up was high, while the ratio of women who wore tailored jacket and leather jacket was high. Fourth, in relation to shoes, the ratio of men who wore sports shoes was high, while the ratio of women who wore heeled-shoe was high. Fifth, it was found that plane pattern was preferred the most. As it was stated above, the findings of this study on the effect of entertainers' fashion on adolescents through street fashion indicated that the number of adolescents who imitate the fashion of entertainers increased.