• Title/Summary/Keyword: Life jacket

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Characteristics of automatic positioning transmitter (APT)using satellite on life jacket to minimize casualties of fisherman (어선원 인명피해 최소화를 위한 구명동의용 위성자동위치발신기의 특성)

  • Kim, Seok-Jae;Kim, Wook-Sung;Lee, Yoo-Won
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.48 no.3
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    • pp.235-241
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    • 2012
  • The efficiency tests of automatic positioning transmitter (APT) using satellite on life jacket were carried out to minimize casualties of fishermen and to make system optimization for effective SAR (Search and Rescue) operation. As the result of the tests, average position was equaled on the comparison between SPOT using low earth orbit satellite and DGPS (Differential Global Positining System), but standard deviation of DGPS for latitude and longitude were 66.4% and 46.3% smaller than those of SPOT. The position precision of SPOT was almost two times lower than LGT using geostationary satellite to compare 95% circular error probability. However, the success rate of receiver for SPOT was revealed as 86.5~94.1% on the experiments in the South Sea and the West Sea and it was 4.5 times higher than LGT. Therefore, SPOT is expected to contribute greatly to the rapid rescue of victim.

Identifiable life vest signal generator in case of marine accident (해양사고 시 식별 가능한 구명조끼용 신호발생 장치)

  • Bang, Gul-Won
    • Journal of Digital Convergence
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    • v.20 no.5
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    • pp.317-322
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    • 2022
  • In general, life jackets are worn by people in critical situations on the water to rise to the surface without falling into water, and life jackets simply serve to prevent sinking, but do not actively help rescue disaster areas in critical situations early. In order to solve this problem, a device that automatically generates a distress signal in an emergency situation was developed. When the survivor is in hand for a while, the distress signal generator is automatically separated from the life jacket, allowing information such as location values and other information to be transmitted wirelessly and a rescue signal using LED light. As a result of the experiment, when submerged in water, the life jacket and the distress signal generator were automatically separated, and the result of wireless transmission of the coordinate value of the location received by the GPS was confirmed. By using this, the location of the distress or missing person can be identified, which can be quickly replaced in case of an emergency

Development of a Down-alternative Outdoor Jacket design (다운대체 아웃도어 재킷의 디자인 개발)

  • Lee, Dal A;Moon, SunJeong;Chung, Sham Ho
    • Journal of the Korean Society of Costume
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    • v.63 no.8
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    • pp.143-155
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    • 2013
  • The outdoor apparel market has been growing very fast recently, and consumers are spending more time doing outdoor activities for their leisure. As the outdoor apparel market is growing, it has started to combine functionality with style to provide more diverse designs and colors for all ages. The increase of interest in heathy life-styles, outdoor activities, and leisure has lead to a rise in demand for outdoor apparel. Now outdoor apparel have become a part of people's daily casual wear in addition to being worn for outdoor activities. This study is focused on a outdoor jacket design which is used as down-alternative material and the purpose of this study is to design outdoor jackets using a down-alternative fabrics that improve the thermal and lightweight effects for clothing comfort, and increase the satisfaction of wearing down-alterative outdoor jacket. The research of this paper was done by using a questionnaire survey. The survey was used to examine the male customers' outdoor activities, purchase behaviors, place, expense and design preferences. Then, down-like fabric was used to make the prototype down jacket and its design, function, and satisfaction with wearing compared with other brands down jacket products were analyzed. Although duck down fabrics are representative of outdoor jackets, they have many problems that need to be solved such as feathers falling out or its vulnerability to moisture. They have competitive prices compared to down jackets so down-alternative jackets are able to gain more proportion of its market share.

Application of Golden Ratio Jacket Code in MIMO Wireless Communications (MIMO 통신에서 황금(黃金) 비(比) 자켓코드의 응용)

  • Kim, Jeong-Su;Lee, Moon-Ho
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.17 no.4
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    • pp.83-93
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    • 2017
  • In everyday life, the ratio of credit card aspect ratio is 1: 1.56, and A4 printer paper is 1: 1.414, which is relatively balanced golden ratio. In this paper, we show the Fibonacci Golden ratio as a polynomial based on the golden ratio, which is the most balanced and ideal visible ratio, and show that the application of Euler and symmetric jacket polynomial is related to BPSK and QPSK constellation. As a proof method, we have derived Fibonacci Golden and Galois field element polynomials. Then mathematically, We have newly derived a golden jacket code that can be used to generate an appropriate code with orthogonal properties and can simply be used for inverse calculation. We also obtained a channel capacity according to the channel correlation change using a block jacket matrix in a MIMO mobile communication.

The Trend and Meaning of Decoration in Fashion Magazines - Focused on Blouse, Jacket and One-piece - (패션잡지에 나타난 장식 경향 및 내적 의미 - 블라우스, 재킷, 원피스를 중심으로 -)

  • Jung, Ji-Nyun;Kwon, Gi-Young
    • Fashion & Textile Research Journal
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    • v.10 no.5
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    • pp.731-738
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    • 2008
  • The purpose of this study is to analyze the trend and meanings of the decoration which has appeared on fashion magazines from 1995 through 2005. The method of this study is to analyze 1627 decorations represented in fashion magazine focused on blouse, jacket and one-piece. As a result of this study I drew the following conclusion. First, the decoration reflects a life-style that modern people persue comfort, casual wear. Second, the decoration redefines the feminine identity by fusing different factors of fashion style. Third, the decoration reflects the hybrid tendencies through reconstruction by merging different culture or things.

A Study on the Costume of Ch'ing Dynasty in "Dream of the Read Chamber" ("홍루몽"에 나타난 청대복식 연구)

  • 나해연;전혜숙
    • Journal of the Korean Society of Costume
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    • v.24
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    • pp.59-82
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    • 1995
  • All kinds of art are the creatures of the daly and reflect the society and the life of the day in literary works. So, in which literary works, we can find the styles of those who lived in the specified days. And the styles of its character's costume are expressed with the day'mood and cultural backgrounds. In this study, we studied on the general meaning, which was shown in the Costume of early Ch'ing Dynasty that was forming the Costume of dress through dividing into the underwear and the outer garment in $\ulcorner$Dream of the read Chamber$\lrcorner$. During the Ch'ing Dynasty, according to the rule : Men followed it but women not" , they held on to the costume of them (both the Man and the Han) with a high pressure and a conciliatory policy. As a result, I have known that there is the Soojean clothe(수전의), which is the late Myung Dynasty's one and their is also Skirt (군), which held on the Costume of the Myung's. Hence in the Ch'ing , there are a lot of difference in the Costume , the economy and the politic because the ruler was not the han but the Ch'ing. Those characters are as follows. first, on the side of the style , it is occured in the coat and the over jacket of the round neckline. The style of the sleeves are also the tightly(고착). Second, on the side o f the material, the use of the furs are found. It seems that are influence of the north area. Third, it is involved not the traditional Costume of the Han, but the over jacket(which is waistlength), These characters had taken root into the Costume of the Ch'ing Dynasty. In case of the jacket, which are found in the novel most frequently , it was represented by the tight jacket (소오), the long jacket (대오), the short jacket(단오) and the Sam (삼). The skirt was used by women only. the Slacks were trousers only for men, so it was not foujnd in the women's wear. In the vest, the over jacket and coat, which are for putting on, its material, insiqnia and varied embroidery are very brillant and elaborate. The used materials are the silks , furs, wools and cottons. Among the dick silks are used most frequently . in case of the over jacket, the precious and varied furs are used for the collar, the sleeve or the decoration and the lining cloth. In the novel, mean followd the Costume of the Man and women followed the Costume of the Han. Especially, it is a special costume that there were women in male attire. Finally, the costume of the Ch'ing had built the unique one with holding on the advantage and the short point s of the northen race and the Han's. Also , I can find the brilliant , eleborate Customes of the aristocratic class in the novel.

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A Study on the Development of an RFID System for Recreational Boating Safety (RFID 기술을 활용한 해양인명구조 시스템 개발에 관한 연구)

  • Yang, Dong-Shin;Sung, Chul;Choi, Tae-Sung
    • Proceedings of KOSOMES biannual meeting
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    • 2006.11a
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    • pp.119-123
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    • 2006
  • Finding out the exact location of survivors in short period of time is critical to conduct rescue activity successfully in oceans. Current technology with natural circumstances limits the activity that our efforts come along. R&D Center housed at Korea Coast Guard (KCG) has developed the system named "RFID for Life jacket" which enables us to access the location of persons under distressed situation. The RFID has been widely known as state-of-art technology to monitor the location even in inland or in ocean. Composed of tag, antenna. reader and middleware, RFID is attached to attached to a life jacket that people usually wears in recreational activity. By conducting experiments in pilot-scale several times, successful results showing 96.7% of transmission within 3.5km in diameter were produced. This study explains the routes of experiments to reach the goal and expected results coming from this accomplishments.

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Development of Outdoor Jacket Design using Energy Harvesting System by Arm Swing Motion during Walking (보행 시 팔의 교차 운동을 이용한 에너지 하베스팅 재킷 디자인 개발)

  • Lee, Hyewon;Lee, Minsun;Suh, Sung Eun;Roh, Jung-Sim
    • Fashion & Textile Research Journal
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    • v.21 no.3
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    • pp.300-307
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    • 2019
  • This study develops a user centered outdoor jacket capable of energy harvesting based on consumer needs. Jackets are designed for typical outdoor activities such as hiking, trekking, and climbing, integrated with an energy harvesting module that can generate electric power from arm swing in outdoor and daily life walking. Textile based energy generators developed by the previous research of Lee & Roh (2018) were used. A prototype was created based on the arm swing motion experiment for location options and energy harvesting system functions, the simulation by the design sketch, and evaluation of the wearing test by experts. In-depth interviews were later conducted for the prototype with 10 outdoor experts to derive the optimal location of an energy harvesting system in three ways, and the prototype was revised to 5 styles that reflected reviews by experts on function and appearance. Research indicated that the energy harvesting jacket design signifies a user-centered design based on expert interviews and usability evaluation as well as previous research on energy generation and storage device. The jacket is convenient because it combines an energy generator in an optimal position to maximize energy generation with a storage and charging device that can be inserted into various position options for accessibility.

Design Development for Activation of Women s Hanbok (여성 생활한복을 위한 디자인 개발)

  • 조오순;전정희
    • Journal of the Korean Society of Clothing and Textiles
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    • v.25 no.8
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    • pp.1378-1385
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    • 2001
  • Textile The purpose of this research is to develop the design for activation of women s hanbok focused on functionality and convenience as well as on keeping the traditional beauty, and then to produce them. As a result of these explorations, I have reached conclusions as follows. first, the transformation of jackets and skirts are mainly limited to partial change in elements of the dress design-width and length of a jacket string and the upper strip on the outside of a jacket, change in width, and granting of symbolic meaning. Second, aesthetic features and formative beauty of traditional hanbok that the harmonization of mainstream colors and highlighting colors and curved silhouettes evoke were mental by products created as our people wished to become friendly to and to harmonize with nature. Third, grounded upon study of lines form and survey on brands, I have developed designs that maintain hanbok’superiority and at the same time incorporate functionality and convenience to fit modern life. I believe that the outcome of these of these explorations will contribute greatly to carrying the traditional beauty of Korean dresses to the maximun, and to developing and popularizing functional and practical living-fitted Korean dresses.

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A Study on the Development of Sports Jackets Using LED LIGHTING (LED LIGHTING을 활용한 스포츠 재킷 개발에 관한 연구)

  • Park, Jinhee;Kim, Jooyong
    • Journal of Fashion Business
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    • v.23 no.1
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    • pp.103-115
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    • 2019
  • In this study, we provided examples of light emitting diodes (LEDS) in everyday sportswear and confirmed their usefulness to provide functionality, aesthetics, and entertainment. One type of sports jacket and one set of sportswear were designed and manufactured using LEDs and made available to the general public for use in daily life to provide functionality, aesthetics, and entertainment. To generate digital images, a textural design of a circuit image was developed and applied, and the LEDs were placed on the developed textile in an attempt to merge the LEDs with the design. The product was equipped with a tilt sensor and produced a randomly lighted jacket with LEDs that adjusted according to movement. The LEDs turned on in the desired location by lifting the arm during night sports activities. The tricolor of NEO PIXEL LEDs lit randomly and its rhythmical design could be maximized when moving or exercising outdoors, and also for entertainment. The role of creating interest for lively and unexpected pleasures and the aesthetic beauty of LED lights were also obtained. There was no inconvenience or restriction of movement by LEDs or internal structures using the hot-melting technique, and the removable attachment of the device made it easier to wash.