• 제목/요약/키워드: HEM

검색결과 339건 처리시간 0.022초

격자로 분할된 개구면을 갖는 혼 안테나의 이득 개선 (Gain Enhancement of a Horn Antenna with Latticed Aperture)

  • 허문만;이인재;임계재;윤현보
    • 한국전자파학회논문지
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    • 제17권10호
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    • pp.1000-1006
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    • 2006
  • 정사각형 혼 안테나의 개구면을 $3{\times}3$의 도체 격자로 분할하여 이득을 개선하였다. 개구면상의 균일한 필드 분포를 얻기 위해서, 중앙과 가장자리의 격자에 두께가 서로 다른 유전체 판을 삽입하여 위상을 보상하였다. 12.5GHz 대역의 혼 안테나를 설계하여 FDTD 방법으로 개구면의 필드 분포를 해석하였고, 이로부터 복사 패턴을 계산하였다. 실제 측정한 결과, 격자형 개구면을 갖는 안테나의 이득은 18 dBi로 일반적인 혼에 비해 이득이 약 2 dB 개선됨을 확인하였다.

한국 군용 방한복 상의에 대한 실태조사 (A Study on the Current State of Korean Military Winter Uniform Tops)

  • 정미애;남윤자
    • 복식
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    • 제66권5호
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    • pp.66-81
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    • 2016
  • This study is designed to understand the problems of existing Korean male soldiers' winter uniform tops by researching its current state, and contribute to developing uniforms with improved size and motion appropriateness. Military bases were visited to research satisfaction of size and motion appropriateness of the current winter uniform tops. 193 soldiers were surveyed and interviewed, and the shape and fit of the standard sizes of the inner and outer layers of the current winter uniform were analyzed. Findings of this study are as follows. 1) Compared to the new combat uniforms that soldiers were wearing in their appropriate size (of the 44 sizes), there were many cases where the soldiers were not wearing winter uniform inner (of the 8 sizes) or outer (of the 18 sizes) layers in the correct size for their body. 2) A total of 37 combat uniform sizes appropriate for the body shapes were expected to be newly applied, and inside and outside layers of winter tops would be presented as sets of 14 different sizes in step with the new combat uniform sizes, instead of the existing 8 inside layer sizes and 18 outside layer sizes. 3) The inner and outer layer of the existing winter uniform tops had several problems with the shape and fit. First, the inner layer was shorter than the combat uniform. Its shoulder width was wide, but the sleeve length was short creating lack of coverage, and the angle connecting the sleeve and bodice was very small creating a high sleeve cap curve and narrow sleeve width that make motions difficult and cause discomfort. As for the outer layer, the hem moved up when soldiers bent over or adjusted the waist string so the top could not sufficiently cover, the shoulder width was wide and the sleeve length was short, requiring improvements.

아토피 피부염환자의 봄.여름용 니트웨어 선호도 및 착용감 연구 (A Study on the Preference and Wearing Sensation of Spring/Summer Knitwears of Atopic Dermatitis)

  • 공진희;권영아
    • 복식
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    • 제57권5호
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    • pp.58-71
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    • 2007
  • This study conducted a survey to find out atopic dermatitis patients' required performance and preference in design factors to develop spring/summer(S/S) knitwears preferred by atopic patients. On the platform of achieved information from statistical analysis, S/S knitwear samples for atopic patients were designed and constructed with cotton/Seacell(R) blended yarn, And subjective wearing sensation were evaluated comparing the samples and the commercial products made with cotton/chitosan blended yarn, trying to help producing more comfortable S/S knitwears for atopic patients. SPSS 12.0 program was used for frequency analysis, Chi-square analysis, ANOVA, and Duncan test. The result was as follows; For comfort of S/S knitwears, atopic patients most considered skin care property. Atopic patients preferred simple and basic knitwear in light color with thin and soft fabric such as plain knit. The preferred style was that 'appropriately fit with suitable ease'. They also preferred 'closed front'; 'boat neckline' and 'V neckline'; 'raglan sleeve' and 'set-in sleeve'. For hem trim, they preferred 'rib' structure. Male preferred simple and plain style with 'round collar' and 'tubular or rib trim", while female preferred sophisticated and characteristic style with 'set-in sleeve' with 'rib trim'. Under the circumstances with insufficient functional knitwears developed, this study tried to develop comfort S/S knitwears for atopic dermatitis patients and the developed knitwears showed as good as or better performance in wearing feeling, fitting, and appearance than the previously developed functional goods.

현대의 전통한복에 사용된 장식기법의 유형과 특성 [제II보] - 2006~2009년 화보에 나타난 여자한복을 중심으로 - (The Types and Characteristics of Decoration Techniques Applied to Traditional HanBok [Part II] - Focusing on Traditional HanBok for Women that were Delivered between 2006 and 2009 -)

  • 이영애;김순구
    • 한국의류산업학회지
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    • 제12권6호
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    • pp.705-714
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    • 2010
  • This study has the purpose of classifying the types of decoration techniques applied to the Korean traditional costume of modern style which are shown in relevant monthly magazines and analyzing the characteristics of the techniques. Findings of the study can be summarized as follows. The types of decoration techniques applied to the Korean traditional costume are classified into single and composite types according to decorative components. In the traditional costume of the former type, a quite many of gold and silver foils and embroideries are found. While, in that of the latter type, a combination of two different decorations, gold and silver foils and embroideries, embroideries and seonchigi or embroideries and stitches is usually used. These decoration techniques are usually applied to some parts of the costume like git, kkeutdong or cuffs, somae or sleeves, jacket or jeogori, the lower hem of the skirt and between joined parts in the skirt. More notably, Korean traditional costumes for women shown in monthly magazines released during the period as mentioned above were investigated to find that a part of the women's clothes, that is, skirt was in most cases decorated with brilliant embroideries. Used together with the techniques, patterns are usually applied onto embroideries and gold or silver foils. Most of the patterns are flower in shape. The main material of the Korean traditional costume is fabrics that have brilliant patterns on the surface and are commercially available irrespective of season. Consequently, since 2010, flower motive patterns which are important in modern fashion trend will be used in embroideries, gold and silver foils. Additionally, embroideries such as seakdong, applique, drawing made with modern style will be the main stream of new HanBok style.

복합요소법을 이용한 항내 파낭 응답 수치해석 (Numerical Analysis of Wave Agitations in Arbitrary Shaped Harbors by Hybrid Element Method)

  • 정원무;편종근;정신택;정경태
    • 한국해안해양공학회지
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    • 제4권1호
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    • pp.34-44
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    • 1992
  • 단주기파의 항내 침입ㆍ변형에 의한 수면파난 현상을 효과적으로 예측하기 위한 수치모형을 제안하였다. 해저면 마찰을 고려한 완경사 방정식을 기본으로 하고 고체 경과면에서는 부분흡수 경계조건을 사용하였다. 방파제 주변과 항내 영역은 유한요소로 모형화하고 항외 영역에서는 Helmholtz 방정식의 해석해를 사용하는 복합요소법을 이용하였다. Chen과 Mei(1974)의 방법에 따라 경계치 문제의 범함수를 구한 후 구함되는 최종적인 연입방정식을 Gauss 소거법으로 푸는 수치모형을 수립하였다. 양익방파제에 의한 파의 회절에 대한 수치모형실험(Pos and Kilner, 1987)과 수치계산을 비교한 결과 양자가 양호하게 일치하여 본 수치모형의 타당성이 검증되었다. 본 모형은 유한차분 모형에 비해 경계면과 반사의 처리가 정확한 반면 상대적으로 커다란 컴퓨터 기억용양을 필요로 하므로 사각형 요소를 사용하는 등의 개선이 요구되었다.

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항공정비복 착용실태에 관한 연구 (A Study on the Actual Wearing Conditions of Working Uniform for the Aircraft Mechanic)

  • 임현주;최혜선;이경미;김수아
    • 한국의류학회지
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    • 제30권9_10호
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    • pp.1344-1353
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    • 2006
  • The purpose of this research is to investigate the actual wearing conditions of working uniform and identify problems for the aircraft mechanic. For this study, questionnaire surveys were conducted dividing according to styles of clothing; one-piece and two-piece styles. Subjects were 343 men working in flight line. Questionnaire of 159 two-piece styles and 184 one-piece ones were used in analysis. The results of the study are as follows; The result about wearing each type of working uniform showed that the two-piece one is always as the air force uniform, whereas the one-piece one is worn only a few times. They felt inconvenience during all operations except in the sitting position, crawling position, and positions in which they were using tools. Accordingly, the result of the functionality reported dissatisfaction on all question items. Therefore, uniform of two-piece style achieved better results on all questions related to motional flexibility and functionality. Questions on changes to finishing methods showed that each airline employed different methods for both two-pieced and one-pieced uniforms. The answers about the unstitched or worn-out parts of the two-piece garments showed that pants were unstitched on the inner seam of the trouser leg and hip regions, but the upper one was not. In case of the one-pieced uniform, the parts of wearing out is the seam of hip and the unstitched parts are knee region and hem line of pants. Questions concerning their satisfaction with the material of uniforms indicated a high rate of dissatisfaction, particularly in its ventilation and absorbency. Questions concerning the preferred design of working uniform indicated a preference for two-piece uniform rather than one-piece ones.

3D 가상 착의 시스템을 활용한 원피스 드레스의 원형 개발 및 시각적 이미지 연구 (Development of a Pattern and Visual Image for a One-Piece Dress using a 3D Virtual Clothing System)

  • 어미경
    • 복식문화연구
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    • 제19권3호
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    • pp.597-611
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    • 2011
  • The purpose of this study is to propose a design method for one-piece dress patterns with high body fitness through an appearance evaluation of one-piece dress patterns with the application of the 3D Virtual Clothing System known as i-designer. Measures consisted of an optical illusion effect in visual imagery and mutual influence according to a change in the length and princess line, in a silhouette of a one-piece dress. The data was assessed by a t-test and a multi-way ANOVA and factor analysis using SPSS 17.0. The results were as follows; The design of the study pattern was done by modifying the ease of the bust circumference, ease of the abdominal circumference, ease of the hip circumference, the position of the side seam line, and the appearance of horizontality in the hem line, which received a low evaluation in appearance evaluations of a one-piece dress pattern. As a result of analyzing the visual image according to a change in the length and princess line, in the form of a silhouette of a one-piece dress, four factors were selected; the whole-body optical illusion factor, the upper-body optical illusion factor, the bust optical illusion factor, and the lower-body optical illusion factor. As a result of analyzing the effect of the interaction in the visual image according to the design variables, the influence of the main effect was found to be great in each factor. In the upper-body optical illusion factor, a significant difference was not noted in the two-way interaction between the length and the princess line. However, the influence on three-way interaction among the length, princess line, and silhouette was significant.

허브 염용액으로 마리네이드 한 고등어의 이화학적 특성 및 관능 평가 (Sensory Test and Physiochemical Property of Marinade Mackerel with Hem Salt Solution)

  • 주형욱
    • 한국조리학회지
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    • 제17권3호
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    • pp.221-235
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    • 2011
  • 본 연구는 허브 추출물로 마리네이드 한 고등어의 품질 특성에 대하여 알아보고자 하였다. 마늘, 생강, 바질의 첨가량을 달리하여 최적의 첨가량을 알아보았다. 실험 결과, 마늘 3%, 생강 3%, 바질 2%의 기호도가 가장 높아 최적의 첨가량으로 도출하였다. 최적의 첨가량인 마늘 3%, 생강 3%, 바질 2%를 첨가하여 마리네이드 한 고등어의 pH 변화는 적색육 어류의 초기 부패점인 pH 6.2-6.4의 범위 안에 들어가 제품 품질 특성에 적합하였으며 특성차이검사에서 견고성은 GA3이 가장 낮아 부드러웠고, 탄력성도 GA3이 가장 좋았으며 촉촉함 또한 GA3 이 촉촉하여 생강, 바질 보다는 마늘이 더 좋은 것으로 나타났다. 기호도 검사에서 외관, 향, 절감, 맛 모두 GA3를 가장 선호하였다. 이상의 실험 결과를 볼 때 GA3(마늘 3%)이 최적의 첨가량으로 보아진다.

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전자기 탐사 시스템 반응의 타당성 확인을 위한 분산 관계식과 힐버트 변환 (Dispersion constraints and the Hilbert transform for electromagnetic system response validation)

  • Macnae, James;Springall, Ryan
    • 지구물리와물리탐사
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    • 제14권1호
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    • pp.1-6
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    • 2011
  • 상업적인 주파수영역 항공전자탐사 장비의 개별적인 하부시스템의 계기변화와 보정에 대한 점검방법으로 유인성 제약조건만을 사용하여 광대역 이상성분 자료로부터 통상성분을 예측하고자 한다. 이상성분 자료로부터 통상성분의 반응을 예측하는 방법은 다음을 포함한 몇 가지가 있다: (1) 기준면 변화, 보정, 위상의 점검에 대한 품질관리; (2) 이상생분 측정으로부터 통상성분의 잡음수준 예측 및 확인 그리고 향후에는 그 반대과정도 가능할 것이다; (3) 주파수영역과 시간영역의 더 나은 변환과 유인성을 충족시키기 위해 성기게 측정된 자료의 내삽 및 외삽 실제로 수치모형자료와 Resolve 헬리곱터에 탑재된 전자기 탐사 장비로 측정된 주파수 영역 자료에 대한 실험 결과, 통상성분 자료들은 비율을 맞춘 힐버트 변환에 의해서 40에서 80 ppm의 표준편차를 갖고 예측될 수 있다는 것을 알았다. 그러나, 비행간의 기준면들 사이의 상대적인 차이는 1 ppm보다 더 정확히 분석될 수 있으며 이는 계기변화 보정의 정밀도에 대해 독립적인 품질관리를 가능하게 한다.

신생아복 현황과 소비자 불만사항에 관한 연구 (A Study of Current Newborn Clothing and Consumer Complaints)

  • 노의경;권상희
    • 한국의류산업학회지
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    • 제20권2호
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    • pp.128-142
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    • 2018
  • This study explores newborn clothing with regard to clothing type, construction, textiles, design, size, and label placement. Related consumer complaints are also analyzed. Analysis of 50 newborn clothing items revealed six types of newborn clothing: baenaet jeogori, baenaet gown, bodysuit, one-piece, shirt and pants set, and pants. The baenaet jeogori was the most common type, and the most commonly used fasteners were ties and snaps. The following characteristics were commonly observed: front opening, long raglan sleeves, mitten cuffs, cotton fabric, white/ivory color, animal print, contrast hem, $appliqu{\acute{e}}$, and size 60. In-depth interviews of 12 mothers with children under 24 months revealed that the baenaet jeogori was the most unsatisfactory type; the shirt and pants set and bodysuit were preferred. Interviewees were dissatisfied with types of openings, expressing a preference for snaps and complaining about ties, too many snaps, metal snaps, and shoulder openings. Overly wide or narrow sleeves resulted in improper fit, and long sleeves made it difficult to dress the baby. Interviewees required diverse sleeve length options. They were dissatisfied with heavy fabric for hot and warm seasons, and with labels attached inside clothing or outside near the neckline. Mothers with particularly small or big babies complained about limited sizes. To improve current newborn clothing, additional items such as shirt and pants sets or individual pants, front opening clothing with few snaps, proper sleeve fit with diverse length options, lightweight fabric for hot and warm seasons, label placement that avoids skin irritation, and size segmentation are recommended.