• 제목/요약/키워드: Holding methods

검색결과 399건 처리시간 0.031초

큐브위성 적용을 위한 분리너트형 비폭발식 구속분리장치 인증모델의 성능검증 (Performance Verification of Separation Nut Type Non-explosive Separation Device for Cube Satellite Application)

  • 오현웅;이명재
    • 한국항공우주학회지
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    • 제41권10호
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    • pp.827-832
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    • 2013
  • 극초소형 위성으로 분류되는 큐브위성의 경우, 1U를 기준으로 $10cm{\times}10cm{\times}10cm$의 크기, 1kg 이하의 중량제한을 비롯해 폭발식 구속분리장치의 적용이 불가한 설계요구조건으로 인하여 열선 작동시 나일론선의 절단과 함께 구속을 해제하는 구속분리 방식이 일반적으로 적용되고 있으나 낮은 체결력과 다수 구조물의 구속 시 다수의 열선 적용을 필요로 하는 등 시스템 복잡화의 단점이 존재한다. 본 논문에서는 기존의 큐브위성에 적용되는 열선 절단방식의 단점을 극복하기 위하여 열선절단방식을 적용한 분리너트형 비폭발식 구속분리장치를 고안하였으며, 인증모델의 기능시험, 정하중시험 및 충격시험을 통해 설계 유효성을 입증하였다.

한국 전통 직물의 연꽃무늬 유형 연구 (Types of Lotus Patterns in Traditional Korean Textiles)

  • 이은진
    • 복식
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    • 제67권1호
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    • pp.56-73
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    • 2017
  • The purpose of this study is to categorize the lotus patterns of traditional Korean fabrics. This study collected 169 fabrics of Korean lotus flower patterns and then made a list of era, configuration of pattern, type of artifact, findspot and holding institutions. It analyzes the characteristics of 251 kinds of lotus woven on 169 Korean fabrics, 251 kinds of lotus on 169 fabrics divided into Realistic Type, Design Type, and Abstract Type. They consist of 213 kinds of Design Type(84.8%), 21 kinds of Realistic Type(8.4%), and 17 kinds of Abstract Type(6.8%). The largest part of lotus patterns is Design Type. Design Types are subdivided into 14 types. This result contrasted with the conclusion of the research paper about peony patterns in Traditional Korean Textiles. The largest part of peony patterns was Realistic Types. Realistic Types of lotus patterns in Korean textiles are subdivided into 6 types. Korea has more diverse forms and a higher ratio of Realistic Types than China and this can be interpreted to reflect that there is a tendency in Korea to prefer natural patterns. Besides abstract Types are subdivided into 3 types. When the lotus flower patterns of Korea and China are categorized and similar types are compared, there are some unique patterns that appear only in Korea or China. Not only that, similar types display differences in pattern arrangement methods and portrayal among the two countries. If such study results are utilized, they can be grounds for distinguishing the production area of lotus flower textile fabrics when they are newly excavated in the future.

지질(地質)이 경북(慶北) 산림황폐(山林荒廢)에 미친 영향(影響) (The Effects of Geological Features on Forest Devastation in Kyungpook Province Area)

  • 손두식;이헌호;박상준;조재규
    • 한국환경복원기술학회지
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    • 제2권4호
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    • pp.1-8
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    • 1999
  • Forest devastation in Korea was caused by several factors such as internal factors from geological features and external factors from artificial forest damages including fuel wood collection from forests, forest fires, shifting cultivations and so on. According to the reports of 1935, lots of forest devastation in Kyungpook province area occurred around the main and branch stream of Nakdong river. Main factors of occurring forest devastation in 1935 were investigated by the methods of forest devastation rate and the population density at the basin of Nakdong river. But based on our study, forest devastation mainly occurred in rock zones of granite and granite gneiss, next to Nakdong formation but scarcely occurred in Hayang formation. Clay of the weathered soils of granite and granite gneiss was lost by rainfall, but remaining coarse-sandy soils(or grits) have poored conditions in vegetation's growth, which are due to high level of water permeability, lack of water-holding capacity and dried conditions. Generally, pine forests are mainly growing up in these regions. It is supposed that forest devastation was accelerated due to long periods of natural regeneration and no ability of natural regeneration by sprout after frequent collections of fuel wood and cuttings from pine forest on those grit areas. These results indicated that the high rate of forest devastation occurred around the basin with the high resident population density, which was partly due to forest damages by fuel collection. Moreover, both geological features and number of residents had much influence on forest devastation. Forest devastation was positively correlated with those variables(r=+0.73).

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시티 노마드의 라이프스타일과 패션스타일에 관한 연구 (A Study on the Lifestyle and Fashion Style of City Nomads)

  • 김혜정
    • 패션비즈니스
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    • 제21권5호
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    • pp.15-29
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    • 2017
  • The purpose of this study is to examine modern people's lifestyle and identify their needs by analyzing clothing behavior through city nomads' attitudes in dairy life, tastes, and methods to pursue in their life. This study tries to understand substitute values as ethical life emerging recently, free life style of mental emotion, clothing behaviors, and fashion style represented by the results. Upon observing city nomads' fashion trend, tunics symbolizing flexibility and comfort and simultaneously reflect colors in a monk style or from basic items that have been used. City nomads' fashion trend also reveals androgynous freeness-and-easiness. City nomads reflect a folksy inspiration, and different cultural perspectives appear in a mixed fashion. Multi-purpose gypsy/boho style is ideal for traveling and occupying smaller spaces in line with the nomadic lifestyle reflectings an American casual image partially by way of gypsy or bohemian nuances. Motorcycle jeans symbolizing functionality for traveling are becoming a part of everyday life. The fashions discussed are categorized as urban, tourer, sports and road. Everyday sportswear - athleisure - is attracting attention enabling a healthy and sound lifestyle. Athleisure is fashion wear harmonizing workplace with leisure, and everyday life and social gatherings. Athleisure represents a significant collapse of the boundary of high fashion and street fashion. Urban- tech wear is light and enables modern people to perform garment and gear functions simultaneously, making storage useful using various technical devices by elevating activity and functionality. Urban outdoor fashion holding functionality and adding modern fashion in appearance has appeared.

The correlations between fall experience, balance, mobility and confidence in persons with stroke

  • Choi, Seokhwa;Lee, Byoung-Hee
    • Physical Therapy Rehabilitation Science
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    • 제9권3호
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    • pp.178-183
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    • 2020
  • Objective: This study conducted in order to investigate the correlations between fall experience, balance, mobility, and confidence. We examined the difference between fall experience, and Berg Balance Scale (BBS), Timed-Up-and-Go test (TUG), Tinetti balance assessment (Tinetti balance [TiB], Tinetti gait [TiG]), and Activities-specific Balance Confidence (ABC) scale scores to see how fall experience, balance, mobility, and confidence of the persons with stroke affects their balance. Design: Cross-sectional study. Methods: Forty-one subjects participated in this study. The BBS includes 14 items, consisting of a 5-point scale from 0 to 4, totaling up to 56 points. The Timed Up and Go-Alone (TUGA) was used to measure the average time to take a 3 m round-trip by getting up and down from a 46-cm high chair with an armrest on a flat floor. The Timed-Up-and-Go-Cognitive (TUGC) was performed by counting backwards and the Timed Up and Go-Manual (TUGM) is performed by holding a cup full of water. The total score for the TiB is 16 points, and the TiG is 12 points, making a total of 28 points. There are 16 items total for the ABC scale. Results: According to the fall experience, BBS, the TUGA and TUGC values were significantly higher in the inexperienced group compared to the experienced group (p<0.05). The number of falls was significantly correlated with BBS, TUGA, TUGC, TUGM, TiB, TiG, TiB+TiG (p<0.05). Conclusions: This study supports that falls experience is strongly related to balance, mobility, and confidence. Optimal balance training programs for fall prevention is still insufficient and must be developed.

Difference of Position Change of Sesamoid Bones During Active Abduction Exercise of Great Toe in Subjects with Hallux Valgus

  • Yun, Sung-Joon;Kang, Min-Hyeok;Kim, Moon-Hwan
    • The Journal of Korean Physical Therapy
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    • 제27권2호
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    • pp.85-88
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    • 2015
  • Purpose: The purpose of this study was to investigate the effects of active abduction exercise of the great toe on the medial and lateral sesamoid bones in hallux valgus (HV) patients by measuring radiography. Methods: In this study 27 young subjects were separated into two groups (normal group and HV group). Two pictures were taken by radiography while maintaining resting and while holding maximal active abduction of the great toe in sitting position on an x-ray table. All radiographs were used to measure the distance of the medial and lateral sesamoid bone from the longitudinal axis of the first metatarsal bone, respectively. Paired t-test was used for analysis of the resting and active abduction exercise in groups. Independent t-test was used to evaluate statistical significance between normal group and HV group. The statistical significance level was p<0.05. Results: In active abduction exercise of the normal group, distance of the medial and lateral sesamoid bones was not significantly different compared to resting condition. In active abduction exercise of the HV group, change of distance of the medial and lateral sesamoid bones showed statistically significant difference compared to resting condition. The distance between the medial sesamoid bone showed a more significant decrease in the HV vs. normal group, while the distance between the lateral sesamoid bone was significantly greater in the HV vs. normal group. Conclusion: These findings suggest that active abduction exercises, to reduce or prevent deterioration of the HV angle, should be considered for sesamoid bone displacement to improve muscle balance in the great toe.

중등학교 가정과 실험학습 교구.설비기준의 적정성에 관한 연구 (A Study on the Criteria Appropriateness of Experimental Materials & Facilities in Home Economics Education of Secondary School)

  • 강혜숙;윤인경
    • 한국가정과교육학회지
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    • 제5권1호
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    • pp.61-85
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    • 1993
  • Because of the specificity of subjects belong to middle school curriculum of Home Economics Education of function training is very important. but it pointed out that the existing standards are out-dated, and because of it , it incongruent to our realities. Therefore, whenever the curriculum o education and the national textbook are reorgrnized periodically, the reform of standards of educational materials & facilities must be followed by it. But in my opinion, in korean middle school, especially in Home Economics Education, educational facilities are not reformed at a proper time. Therefore to enhance the qualities of experimentation/practice of Home Economics Education, in the first place, the preparation for the given conditions of standards of educational materials & facilities are needed. But the educational facilities of Home Economics Education have many problem not only in the qualitative aspect but also in the quantitative aspect. And in addition to it, lost of educational facilities which cannot match contents of national textbook of Home Economics Education are exist. Therefore this thesis aims at examining comprehensively the problem of experimentation /practice of experimental materials & facilities of Home Economics Education connect with contents of Home Economics Education, holding several problems of experimentation/practice of Home Economics Education in middle school, grouping ; the principles and ways concerning the innovation experimental materials & facilities of Home Economics Education by which many teachers and students make sure of more efficient teaching/studying, and obtaining basic data which guarantee the ability of innovation concerning problems of the education of experimentation/practice of Home Economics Education. Method are : 1)grasp our educational realities with my original(question). 2)Integrate/analyse results of 1) 3)check the frequency, percentage with methods of X$^2$-test, T-test, and ‘One-way Analysis of Variances’. 4)suggest my own alternative proposal.

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영추(靈樞).잡병편(雜病篇)의 잡병치료경락(雜病治療經絡)에 대한 연구(硏究) (A Study on the Meridians for treat the miscellaneous diseases in Jap ByoungPyeon(雜病篇) of the Young Chu(靈樞))

  • 이문옥;육상원
    • Korean Journal of Acupuncture
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    • 제20권4호
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    • pp.99-119
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    • 2003
  • Objectives : The Jap Byoung(雜病) of the Young Chu(靈樞), one of the classical book of oriental medicine contains symptoms and remedies for various diseases that can be seen on human body. But it is too difficult to understand the Jap Byoung(雜病), because it is written in old chinese and there are many printer's error and omissions or adds in this book. As a consequence of above reason, the writer of this article has researched to find out the exact meaning of that. Methods : So in this part we study a woodblock-printed book of successive generation and view of annotators, and add adding notes, adjustment, translation to exact comprehension of the original text. Results & conclusions : The principle ideas of the thesis can be summarized as follows: The Jap Byoung(雜病) is consist of five part. In chapter 1, we present symptoms occurred by the upstream current of Qi(氣逆) and their treatments by taking meridian flowing the body parts on which the symptoms occur. In chapter 2, we deal with symptoms such as ikgun(?乾), a pain of the knee(膝中痛), huby(喉痺), epistaxis(?血), lumbago(腰痛), anger(怒), a pain of the jaw(痛), a pain of the nape(項痛) and their remedies. In chapter 3, since abdominal inflation occurs when the Qi(氣) of the five viscera(五臟) is damaged or go upstream, I discussed that the treatment should be given by taking the meridian accordingly. In chapter 4, we deal with the remedy for heartache, and different meridians to be taken by symptom, and parts on which needle to be used, and detailed remedies. In chapter 5, we present other diseases, detailed body parts to be cured and remedies by referring symptoms for a pain of the jaw(痛), the upstream current of Qi(氣逆), hiccup, etc. Especially, we introduce a part of Doinbup(導引法) for wegurl(?厥) and remedies for hiccup such as inducing sneeze by stimulating nostrils, holding one's breath, etc.

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3가지 성문위기도기(Supraglottic airway device)의 삽관 용이성과 삽관시간 비교 - 마네킨을 이용한 연구- (Comparative assessment of the easiness and speed of insertion of three supraglottic airway devices - A manikin study -)

  • 김상태;강보라;탁양주
    • 한국응급구조학회지
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    • 제16권2호
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    • pp.23-30
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    • 2012
  • Purpose : This study was designed to compare the easiness and speed of insertion of three supraglottic airway devices(SADs) in a manikin setting. Methods : Three different SADs - Laryngeal Mask Classic(cLMA), I-gel and Streamlined Liner of the Pharynx Airway(SLIPA) were applied. One hundred and nineteen paramedical students with(group H) or without (group L) previous airway experience were taught brief manikin training about the use of the cLMA, I-gel and SLIPA. The students inserted each device in a randomized order. Time to effective ventilation was recorded in seconds from holding the device to the first chest inflation. Success was determined as adequate chest wall movement. Results : The insertion attempts were lesser in I-gel($1.00{\pm}0.00$) and SLIPA($1.05{\pm}0.27$) than cLMA($1.16{\pm}0.41$, p<.05). The shortest time to insertion was recorded for I-gel($10.5{\pm}3.0sec$), followed by the SLIPA($12.9{\pm}4.5sec$) and cLMA($19.6{\pm}4.1sec$, p<.05). There were no significant differences in the insertion attempts and insertion time of I-gel between group L and group H. But in cLMA, longer insertion time and more insertion attempts were recorded in group L than group H. Conclusion : Both I-gel and SLIPA were superior to cLMA in the easiness and speed of insertion. Even in novice students, I-gel showed an excellent result in a manikin.

한국 유방암 여성들의 유방재건술에 관한 의사결정 경험 (Decision Making Experience on Breast Reconstruction for Women with Breast Cancer)

  • 이명선;정우정;박은영;권은진;김해진;서지영
    • 대한간호학회지
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    • 제46권6호
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    • pp.894-904
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    • 2016
  • Purpose: The purpose of this study was to explore decision making experiences of Korean women with breast cancer who underwent breast reconstruction with/after a mastectomy. Methods: Data were collected during 2015-2016 through individual in-depth interviews with 10 women who had both mastectomy and breast reconstruction, and analyzed using phenomenological method to identify essential themes on experiences of making a decision to have breast reconstruction. Results: Five theme clusters emerged. First, "expected loss of sexuality and discovery of autonomy" illustrates various aims of breast reconstruction. Second, "holding tight to the reputation of doctors amid uncertainty" specifies the importance of a trust relationship with their physician despite a lack of information. Third, "family members to step back in position" describes support or opposition from family members in the decision making process. Fourth, "bewilderment due to the paradox of appearance-oriented views" illustrates paradoxical environment, resulting in confusion and anger. Lastly, "decision to be made quickly with limited time to oneself" describes the crazy whirling process of decision making. Conclusion: Findings highlight aims, worries, barriers, and facilitators that women with breast cancer experience when making a decision about breast reconstruction. Deciding on breast reconstruction was not only a burden for women in a state of shock with a diagnosis of breast cancer, but also an opportunity to decide to integrate their body, femininity, and self which might be wounded from a mastectomy. These findings will help oncology professionals provide effective educational counselling before the operation to promote higher satisfaction after the operation.