• 제목/요약/키워드: Hand piece

검색결과 93건 처리시간 0.028초

모직물을 포염에서 melange염색 효과를 나타내기 위한 기술개발과 응용에 관한 연구 (A Study on Dyeing Technology for Melange Effect in Wool Piece Dyeing)

  • 이명환;정영진;최해욱;이언필
    • 한국염색가공학회지
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    • 제10권3호
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    • pp.1-9
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    • 1998
  • The dyeing properties of modified wool were examined with a series of acid, reactive and cationic dyes. Cationic agent and sulphamic acid were applied to wool fabric for dye assist and resist effect. Wool pretreated with cationic agent showed better uptake of acid and reactive dyes than did untreated wool. On the other hand, the dyeing behavior of wool pretreated with sulphamic acid was found as follows : Acid dyes were poorly resisted with a hydrophobic mechanism but acid dyes were strongly resisted with a hydrophilic mechanism. Reactive dyes were also found to be effectively resisted. Sulphamic acid introduces sulphonate group into wool's structure, it has increased better uptake of cationic dyes than untreated wool. The degree of differential uptake depends on the level of pretreatment and produces a variety of tone-on-tone and multicolor effect in piece dyeing.

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동료평가 정확도 향상 방안의 비교: 평가 기준에 대한 학생들 간 토론 대 전문가 평가 사례 제시 (Student Discussion or Expert Example? How to Enhance Peer Assessment Accuracy)

  • 박정애;박주용
    • 인지과학
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    • 제30권4호
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    • pp.175-197
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    • 2019
  • 고차적 사고를 요구하는 글쓰기는 배운 지식을 활용하고 발전시키게 한다. 학습 장면에서 글쓰기를 더 많이 활용하기 위해서는 동료평가를 도입하는 동시에 동료평가의 정확도를 높일 필요가 있다. 본 연구에서는 동료평가의 정확도를 높이는 방안으로, 평가 기준에 대해 학생들끼리 토론하게 하거나 전문가의 평가를 참고하도록 하는 두 방안을 탐색하였다. 대학생 150명을 대상으로 한 실험 결과, 동료평가 후 전문가의 평가를 참고했던 집단이 평가했던 글을 다시 평가할 때는 평가 정확도가 향상되었지만, 새로운 글을 평가할 때는 향상되지 않았다. 반면에, 동료평가 후 평가 기준에 대하여 토론을 진행했던 집단은 평가했던 글을 다시 평가할 때는 평가 정확도가 향상되지 않았지만, 새로운 글을 평가할 때는 향상됨을 발견하였다. 또한 토론 집단의 경우 평가 기준에 대한 토론에서 총 발언 수가 많아질수록 평가 정확도가 높아졌다. 이상의 결과는 평가 기준에 대한 토론에서 적극적이고 자발적인 논의가 활발할수록 이후 동료평가의 정확도가 향상됨을 시사한다.

자동 로봇 용접을 위한 Hand-Eye 레이저 거리 측정기 기반 용접 평면 인식 기법 (Hand-Eye Laser Range Finder based Welding Plane Recognition Method for Autonomous Robotic Welding)

  • 박재병;이성민
    • 전자공학회논문지
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    • 제49권9호
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    • pp.307-313
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    • 2012
  • 본 논문은 자동 로봇 용접을 위한 Hand-Eye 레이저 거리 측정기 기반 용접 평면 인식 기법을 제안한다. 로봇 용접은 대상체의 형상에 의해 미리 정의된 용접선을 따라 금속 대상체를 용접 평면에 접합하는 과정이다. 따라서 성공적인 로봇 용접을 위해서는 용접 평면의 위치와 방향을 정확히 검출해야 한다. 만약 평면의 위치와 방향을 정확히 검출하지 못한다면 자동 로봇 용접은 실패하게 된다. 정밀한 용접 평면 인식을 위해 레이저 거리 측정기를 이용해 평면상의 직선을 검출한다. 레이저 거리측정기에 의한 직선 검출을 위해 Hough 변환을 적용한다. Hough 변환은 투표 방법을 기반으로 하기 때문에 센서의 측정 오차를 줄일 수 있다. 이 때 레이저 거리 측정기가 부착된 로봇 관절을 회전시켜 평면상의 두 개의 직선을 검출한 후 두 직선의 방향 벡터에 외적을 취해 평면의 방향을 인식한다. 제안된 방법의 실효성을 검증하기 위해 Simlab사에서 개발한 로봇 시뮬레이터인 RoboticsLab을 이용해 시뮬레이션을 수행한다.

치과 진료실의 미생물 오염도에 대한 4차 암모늄 화합물의 효과 (Effect of quaternary ammonium compounds on microbial contamination levels in dental clinics)

  • 백세연;박연정;최승호;김희재;김성택
    • 구강회복응용과학지
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    • 제36권1호
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    • pp.55-60
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    • 2020
  • 물리적 항균효과를 나타내는 4차 암모늄 화합물을 치과 진료실 미생물 주요 오염 구역에 도포 후 시기별 오염도의 변화를 측정하고자 하였다. 4개의 국내외 치과병의원에서 미생물 감염이 쉬운 유닛체어 핸들, 타구대 표면, 핸드피스 거치대 등에 ATP (adenosine triphosphate) 모니터링 시스템과 ATP 표면검사 테스트 키트를 사용하여 항균제 도포 전과 후 시기별 오염도를 비교 측정하였다. 4차 암모늄 화합물 도포 전 구역별 미생물 오염도는 치과의사가 주로 사용하는 핸드피스 거치대가 가장 높았다. 도포 후 시기별 오염도의 변화를 분석한 결과 대부분의 진료실에서 현저한 오염도의 감소를 보였으며, 대략 4-6개월 정도 효과가 지속되는 양상을 보였다. 항균효과의 지속성과 최소량의 화학성분 노출이라는 장점으로 향후 대단위 후속연구를 통해 4차 암모늄 화합물이 치과 진료실에서 효과적으로 사용될 수 있을 것으로 기대된다.

영왕비의 진주낭자 도안을 응용한 니트웨어 디자인 연구 (A Study on Knitwear Design Using the Pattern of Queen Yeong's Pearl Pouch)

  • 최정
    • 한국의류산업학회지
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    • 제16권4호
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    • pp.532-542
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    • 2014
  • This study developed a practical knitwear design with applying the pattern of Queen Yeong's pearl pouch. The ume flower pattern of pearl pouch was simplified to be one repeat pattern, and four simulated knit pattern samples of G-A, G-B, R-A, and R-Bwere made with cable, cross, and two background colors of gray and red using Texpro V.11.0. The items of design application were selected after an interview with a panel of university students in their twenties and knit samples were produced by hand knitting. The small sized G-A for the partial ornament of hat, sweater, skirt, kitchenware case and accessories; the long sized G-B for the tuck of sleeves, hem of skirt and one-piece dress, partial ornament of sweater, scarf, and curtain decoration: the small sized R-A was preferred for point ornament of pouch, boots, hat, partial ornament of children's fashion products and accessories: the long sized R-B for table runner, leg warmer, tuck of sleeves, skirt hem, necktie, and scarf. The knit samples were formulated with partial ornaments attached on dress and props or connected each other. Colors of pastel and navy were also presented to meet the demands of panels. The study placed a limit on the slight difference between the simulation samples and knit samples due to the characteristics of threads and hand tension. The color variation for multiple coordination and activation to reduce the piece rate for young customers remains to be discussed in the near future.

소비자 독특성 욕구에 따른 알파누메릭 브랜드 네임 및 패션제품 유형의 선호도 연구 (A study on the consumer preference according to consumer's need for uniqueness, ALPHA-NUMERIC brand name and types of fashion goods)

  • 정혜원;황선진
    • 패션비즈니스
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    • 제16권5호
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    • pp.114-129
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    • 2012
  • The purpose of this study is to analyze the effects of consumer's need for uniqueness, whether or not using ALPHA-NUMERIC Brand Name and types of fashion goods upon the consumer's attitude. The experimental design of this study is three-ways complex factors design of 2 (Consumer's Need for Uniqueness : High vs Law) ${\times}$ 2 (Whether or not to use ALPHA-NUMERIC Brand Name : Used brand vs Non-used brand) ${\times}$ 2 (Types of fashion goods: Rational fashion goods vs Emotional fashion goods) The conclusions are as follows. 1. The interaction effect upon a favorite level according to consumer's need for uniqueness, whether or not using ALPHA-NUMERIC brand name and types of fashion goods upon the consumer's attitude is proven significant. For the group where customer's need for uniqueness is low, when ALPHA-NUMERIC brand name is not used, the favorableness of rational fashion good, a parka is lower than that of emotional fashion good, one-piece dress. However, there is no significant difference in favorableness by types of fashion goods when ALPHA-NUMERIC brand name is used. At the group with high need for uniqueness, while there is no significant difference in favorableness when ALPHA-NUMERIC brand name is not used, the favorableness of parka is higher than that of one-piece dress when ALPHA-NUMERIC brand name is used. 2. The interaction effects upon purchase intention according to consumer's need for uniqueness, whether or not using ALPHA-NUMERIC brand name and types of fashion goods are proven significant. For the group where customer's need for uniqueness is low, there is no significant different in the favorableness whether or not ALPHA-NUMERIC brand name is used. On the other hand, the group with high need for uniqueness, if ALPHA-NUMERIC brand name is used, the intention to purchase parka is higher than the intention to purchase one-piece dress.

미국 빅토리안 웨딩드레스의 디자인과 제작기법 연구 (A Study on Victorian Wedding Dress Design and Making Techniques of America)

  • 이상례
    • 복식
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    • 제57권9호
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    • pp.161-176
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    • 2007
  • The objectives of this study are to select and analyze unpublished wedding dresses in the 19th century, to investigate the design characteristics and making techniques of Victorian wedding dresses, and to examine the correlation between the wedding dress style and the fashion style in those days and the influence of the wedding dress style on contemporary's styles. The materials of this study were 9 wedding dresses owned by the Historical Costume and Textile Collection at the University of Connecticut in USA. The dresses were made during the mid and late Victorian Age. As for silhouette, the bustle style was popular in the 1870s and 1880s, and the hourglass style in the 1890s, and different from contemporary dresses there were no big differences in structural pattern and details between ordinary dresses and wedding dresses. In addition, colored wedding dresses were used until the mid and late Victorian Age, but since the wedding ceremony of Queen Victoria in 1840, white wedding dress was widely accepted and settled as the tradition of today's wedding dresses. While the Western dress style had been basically a one piece style, there appeared simple two piece designs in which the upper garment was separated from the lower one, from the mid Victorian Age. This is considered the reflection of those days' pragmatic social trend in dress style. It seems around 1875 when asymmetric design was first introduced in the Western dress style, which had been mostly symmetric. The asymmetric style that pursued atypical beauty, though not common during the late Victorian Age, shows a change in the typical Western dress style. With regard to dress making techniques, sewing machines were distributed widely during the early Victorian Age but they were not used in all parts of dress. Most of details and trimming works were done manually and some parts were attached and detached by hand sewing. In addition, not like today, there were no generalized rules of making such as the form of closings and composition.

한복과 한푸의 차이점 분석에 관한 연구 (A Study on the Difference between the Roots of (K)Hanbok and Hanfu)

  • 김지수;나영주
    • Human Ecology Research
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    • 제60권2호
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    • pp.273-287
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    • 2022
  • (K)Hanbok, which is Korea's traditional clothing, differs from the Chinese Hanfu or Japanese Kimono. This study aims to understand the fundamental differences between (K)Hanbok and Hanfu. The Goryeo Dynasty (K)Hanbok, which was particularly popular in China, was established because the Ming Dynasty Hanfu and Chinese fashion were considerably influenced by the 'Koryo Yang'. Firstly, while (K)Hanbok is bulky, Hanfu of the Han Dynasty is characterized by forming a slim silhouette. Due to the climate of the Northern Hemisphere, (K)Hanbok shows a rich silhouette comprising multiple layers of inner pants and a pleated skirt over a voluminous underskirt. On the other hand, the Han's Hanfu creates a straight silhouette in the form of a wrap, revealing the contours of the body. The pleated skirt of the (K)Hanbok can use six to twelve width fabrics, depending on the social position; however, the Hanfu of the Han is a skirt without any pleats. Secondly, the clothing patterns, which have various shapes, are totally different in how they are made and sewn. The Korean (K)Hanbok is a two-piece separate, whereas the Chinese Hanfu style is a one-piece with a skirt. The short length of the (K)Hanbok jacket has a Sup which is cut and pasted allowing the front closure to overlap. Nevertheless, the Hanfu of the Han does not have this Sup because it is of a wrap-around, one-piece style and has an exceptionally large front, and wraps around at the waist which extends to the sides. Thirdly, the (K)Hanbok jacket has separate string Gorums for fastening, and an additional belt around the waist; however, in the case of Gorum, it is unnecessary for a wrapping style of Hanfu. Fourthly, Koreans as an agricultural horse-riding people, basically wore the trousers attached a comfortable gusset, while the Chinese Hanfu had no pants, but the Chinese wore Gaedanggo pants which exposed the hips, inevitably during the Warring States period.

기혼여성의 수입 정장의류와 국산 정장의류의 구매동기 연구 (Buying Motivations for Imported and Domestic formal Suits among Married Women)

  • 박혜정;박재옥
    • 복식문화연구
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    • 제11권1호
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    • pp.1-10
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    • 2003
  • The purpose of this study is to identify differences that married exist between married women´s buying motivations for imported and domestic formal two piece suits and to test the role of socioeconomic variables on those differences. Sample selection criteria included married women lit in8 in ,seoul. Korea, between ages 30∼59. Purposive sampling method was used to secure respondents It with experience with imported formal two-piece suits. Of 400 distributed. 246 usable questionnaires were returned. Statistical analysis of results included factor analysis, and paired t-tests. For both imported and domestic suits, the most important buying motivation was utilitarian, with qualify the most important consideration. Purchases of domestic suits were more influenced by factors such as advertisements, economics, impulse buying, approval of others, and current fashionability of style than were the purchases of imported suits. On the other hand, purchases of imported suits u·ere more influenced by factors such as prestige and utilitarian motivation than were purchases of domestic suits. For most socioeconomic variables, respondents indicated significant differences in their motivations for buying imported suits and domestic suits. The results of this study suggest the need for implementing different marketing strategies for imported suits and domestic suits.

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