• 대한통합의학회지
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• 제2권3호
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• pp.49-55
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• 2014

Purpose : The purpose of this study was to investigate the effect of cross bag weight and carrying bag position type on vastus medialis oblique and vastus lateralis muscle activity ratio during step up. Method : Twenty healthy subjects participated in this study. subjects randomized performed step up with bag weight less than 15%, more than 15% of totalbody weight and without bag and carrying bag position ipsilateral and contralateral. muscle activity was measured with surface electromyography. One-way analysis of variance with repeated measures was used with a significance level of 0.05 Result : The results of this study were as follows: 1. The muscle activity ratio decreased significantly ipsilateral bag position more than 15% of body weight(p<.05). Also, the muscle activity ratio increased significantly contra lateral bag position more than 15% of body weight(p<.05). Conclusion : In conclusion, it was found that applied carrying bag position with weight on VMO,VL muscle activity ratio during step up down. Therefore carrying bag position can be used to selective activate vastus medialis oblique muscle in subjects with patellofemoral pain syndrome.

• 한국운동역학회지
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• 제24권1호
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• pp.43-50
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• 2014

The purpose of this study was to analyze of the GRF (ground reaction force) parameters according to the change of positions and weights of bag during downward stairs between dominant and non-dominant in upper & lower limbs. To perform this study, participants were selected 9 healthy women (age: $21.40{\pm}0.94yrs$, height: $166.50{\pm}2.68cm$, body mass: $57.00{\pm}3.61kg$, BMI: $20.53{\pm}1.03kg/m^2$), divided into 2 carrying bag positions (dominant arm/R, non-dominant arm/L) and walked with 3 type of bag weights (0, 3, 5 kg) respectively. One force-plate was used to collect GRF (AMTI OR6-7) data at a sample rate of 1000 Hz. The variables analyzed were consisted of the medial-lateral GRF (Fx), anterior-posterior GRF (Fy), vertical GRF (Fz), impact loading rate and center of pressure (COPx, COPy, COP area, COPy posterior peak time) during downward stairs. 1) The Fx, Fy, Fz, COPx, and COP area of GRF were not statistically significant between dominant leg and non-dominant leg, but non-dominant leg, that is, showed the higher COPy, and showed higher impact loading rate than that dominant leg during downward stairs. 2) In bag wearing to non-dominant arm, Fx, Fz, COPx, COPy, impact loading rate and COP area showed increase tendency according to increase of bag weights. Also, against bag wearing to dominant arm, non-dominant showed different mechanism according to increase of bag weights. The Ground Reaction Force parameters showed different characteristics according to the positions and weights of bag during downward stairs between dominant and non-dominant arm.

• 문화기술의 융합
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• 제4권4호
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• pp.439-448
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• 2018

본 연구에서는 가방의 휴대 방법이 보행 시 족저압에 어떠한 변화를 일으키는지 알아보기 위하여 정상 성인 남녀 33명을 대상으로 가방을 휴대하지 않고 보행, 가방을 양쪽어깨에 메고 보행, 가방을 하나의 한쪽어깨에 메고 보행, 가방을 한쪽 손으로 들고 보행하기 등 4가지 조건에서 F-scan system을 이용해 족저압을 측정하였다. 실험을 통해 얻어진 족저압의 변화와 좌 우측 발에서의 비대칭성을 분석하였다. 네 가지 가방 휴대방식 간에 부위별 족저압을 비교해 본 결과 좌측 발은 족지와 중족을 제외하고 다섯 가지 조건 간에 유의한 차이를 보였고, 우측 발은 제4,5번 중족골두를 제외하고 모두 유의한 차이가 나타났다(P>.05). 이를 종합해 볼 때 가방을 등 뒤로 양쪽 어깨에 메는 방법을 제외하고는 어떤 방법이 발에 최소한의 부담을 주는 최선의 방법인지는 본 실험의 족저압 변화 양상을 통해서 판단하기에는 다소 부족한 면이 있다고 사료된다. 앞으로의 연구에서는 가방 휴대 방법에 따른 족저압의 변화에 대한 연구 및 비대칭성 부하가 측만증이나 후만증과 같은 비정상적 자세를 치료하는데 효과적으로 사용할 수 있는 방법에 대해서도 연구가 진행되어야 할 것이다.

• 대한물리의학회지
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• 제5권1호
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• pp.15-24
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• 2010

Purpose : The purpose of this study was to investigate the effect of loading position on plantar center of pressure(COP) displacement when carrying a schoolbag during walking. Methods : Forty-four normal subjects were randomly assigned to five groups according to the method of carrying a schoolbag. The carrying a schoolbag methods were classified into five conditions: no bag (condition 1), a backpack (condition 2), a shoulder bag (condition 3), a cross bag (condition 4), a one-hand bag (condition 5). COP displacement such as anteroposterior distance and mediolateral distance of COP were measured with F-scan system. The repeated one-way analysis of variance (ANOVA) and independent t-test were used to confirm the statistical significance. Results : In the comparison of parameters of COP displacement between conditions, anteroposterior distance and mediolateral distance in the left foot and mediolateral distance in the right foot were not significantly different(p>.05), but anteroposterior diatance in the right foot was significantly different(p>.05). Between left and right foot, at condition 1 and 5 the mediolateral distance of COP was significantly different(p<.05) but anteroposterior distance at condition 1 and 5, anteroposterior distance and mediolateral distance of COP at condition 2, 3 and 4 were not significantly different(p>.05). Conclusion : These findings showed that the various loading position by five types of carrying a schoolbag didn't have influence significantly on COP displacement on during walking because of mechanism of postural adaption.

• 한국의류산업학회지
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• 제25권2호
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• pp.153-164
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• 2023

As interest in the environment and sustainability increases, a tendency to pursue eco-design is emerging. Sustainable design coincides with the Korean aesthetic sense of applying the principle of the circulation of nature. This study examined Korean traditional furniture, Bandaji, from the perspective of historical and cultural sustainability and extracted and adopted a sustainability-related motif. The purpose of this study was to develop a creative bag design that reflects Korean tradition and strengthens artistry. First, a bag was produced based on the morphological characteristics of Gyeonggi-do Bandaji. Second, though the original overall design was maintained, the decorative patterns were modified by, for example, increasing the number of ear decorations on the surface of the bag and reducing the number of traps. Third, a new geometric pattern was created for the surface of the bag; this entailed moving the position of the handle-shaped ear ornament and the leather. Fourth, new decorative patterns were drawn on the surface. This study is meaningful in that it presents a sustainable bag production methodology that reflects Korean aesthetics. It also showcases a designer's unique, creative, and artistic bag design. It is expected that design work inspired by Korean formative beauty will be an opportunity to simultaneously utilize and support various Korean cultural assets and artworks.

• 한국응급구조학회지
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• 제20권1호
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• pp.7-15
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• 2016

Purpose: There are few studies on the quality of cardiopulmonary resuscitation (CPR) performed by a single rescuer using a bag-valve-mask device. The aim of this study is to compare CPR quality outcomes according to the rescuer's position or mask fixation grip method and to determine the optimal means of achieving therapeutic goals. Methods: The three CPR methods were defined as over-the-head, lateral-superior, and lateral-inferior, depending on the rescuer's position or mask fixation hand placement. CPR quality was estimated for 83 paramedic students who performed 5 minutes of CPR in a randomized sequence on a manikin using each of the three methods. Results: The over-the-head method showed no advantage for cardiac compression and ventilation quality, but minimized the rescuer's fatigue score. Conclusion: In contrast to previous studies or prevailing beliefs, the lateral-superior position is optimal for achieving therapeutic goals with moderate or minimal rescuer fatigue.

• 생물환경조절학회지
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• 제18권4호
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• pp.413-419
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• 2009

토마토 펄라이트 자루재배에서의 효율적인 점적핀설치 위치를 규명하기 위해서, 지제부로부터 5cm 위치에 고정(F5), 15cm 고정(F15) 및 5cm~15cm로 이동(M5-15)의 3처리구를 두었다. 점적 핀 위치에 따른 배지 내 뿌리 분포를 알아보기 위해서 자루 배지를 9등분해 염색한 결과, F5 처리구에서는 다른 처리에 비해 뿌리량이 지제부 가까이에 좀 더 많았고 지제부에서 멀어질수록 뿌리량은 적었다. 지제부에 가까울수록 뿌리는 하위로 많이 발달해 있으며, 멀수록 배지 전체에 균일하게 분포하는 경향을 보였다. F15 처리구에서는 지제부에서 멀수록 뿌리가 많이 밀집되어 있었고 지제부에서 멀어질수록 위쪽에 많이 분포되어 있었다. 점적 핀 위치가 지제부로부터 5cm 위치에서 15cm로 이동한 M5-15 처리구에서는 전체적으로 뿌리가 균일하게 분포되어 있었다. 펄라이트 자루 내 배지 부위별 수분 분포를 생육단계에 따라 조사한 결과, 처리에 관계없이 수직분포는 하부로 갈수록 수분함량이 많았으며, 하부에서 특히 많았다. 관수종료 1시간 후에는 상부에서는 차이가 없었지만, 중부 및 하부에서는 지제부에 가까울수록 수분함량이 많았다. 중앙과 양측 면 사이에 큰 차이는 없었다. 수확량은 F15 처리구에서 가장 많은 경향을 나타내었다. 이상의 결과, 펄라이트 자루재배에서는 점적핀을 지제부로부터 15cm에 위치시키는 것이 뿌리분포나 수확량에 가장 좋은 것으로 나타났다.

• 한국의상디자인학회지
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• 제11권3호
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• pp.27-41
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• 2009

As for modern people, the fashion accessory plays a role in allowing the whole coordination in clothing to be highlighted, receives environmental factors in the complementary relationship with clothing, and is being progressed rapidly as well. Among accessories, it is considered to be probably significant to examine especially about the historical consideration and the transitional process in bag, which becomes a means of expressing free individuality in fashion while recognizing importance of bag, which is being developed today as a necessary article along with diverse lifestyles in each individual. Accordingly, the purpose of this study was to examine which correlation a bag comes to have with clothing according to a historical change in fashion and was changed in the transitional process of historical consideration on bag from the latter half of the medieval times to the modern times. Also, it tries to analyze on features in a form, material, kind, and color by period in a bag. Thus, the aim is to be conducive to a future qualitative research on bag Through the research process, it could be known about which a bag has been changed into diverse forms while experiencing several processes in order to conform with a flow of clothing, which is required by society according to a change in period, and about its historical significance, value, and aesthetic characteristics. It was certainly necessary for walking about with putting commodity necessary for people in it. As one of accessories that cannot be separated from clothing, it makes it available for knowing user's social standing and position and living scale, and makes it realized for the importance influence upon establishing a woman's identity.

• 복식문화연구
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• 제28권4호
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• pp.429-445
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• 2020

The purpose of this study is to provide ideas for the development of bag design by analyzing the expression types and aesthetic formativeness of modern bag design using tassels and fringe given the newtro trend pursuing analog sensitivity in modern society. The methods and scope of this study are as follows. First, the related literature and internet data were reviewed in order to examine the expression types and characteristics of the bags of the West and East. Next, the definition and characteristics of tassel and fringe decoration in terms of the history of clothing were analyzed. Finally, the expression types and aesthetic formativeness of tassels and fringe were derived through the analysis of modern bag design shown in the fashion collections since 2010. The bags decorated with the tassels and fringe bring a variety of visual effects depending on the attachment position, direction and material composition, concentrating the gaze and radiating original style. In this study, the expression of tassels and fringe in modern bag design was classified into three types: surface decoration, shape variability, and object combination. Next, the aesthetic formativeness of modern bag design using tassels and fringe as decorative elements appeared through the mixture of heterogeneous materials and playfulness through imagination, exaggeration through extension of length and volume, and retro characteristics through reinterpretation of tradition. This study is expected to contribute to creative ideas of modern bag design which requires a global sense, which has been used in various cultures for a long time.

• 화약ㆍ발파
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• 제36권3호
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• pp.29-38
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• 2018

국가 산업발달과 경제발전으로 사회 기반시설 및 각종 편의시설 등에 대한 지하 공간 사용이 급격히 증가되면서 터널과 같은 지하공간에 대한 필요성이 대두되고 있다. 본 연구에서는 지하 공간 발파 시 발생되는 분진저감을 위해 분무 제어 시스템을 개발하였다. 분진저감 효과를 증대시키기 위해 분무 방향을 막장 방향으로 제어할 수 있는 분무 가이더를 고안하였다. AUTODYN 프로그램을 이용한 수치해석을 실시하고 그 결과를 기초실험과 비교하였다. 워터 백 내부 도폭선 위치에 따른 분무 확산효과를 검증하기 위해 중앙장약, 하단장약에 대한 수치해석을 하고 실험을 통해 검증하였다. 최적 조건은 뇌관 외부 기폭과 워터 백 내 도폭선 중앙장약이었으며, 그 결과로 인한 분무 입경은 광산 및 터널에서 발파 후 분진 저감에 적합하였다.