• 복식
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• 제64권2호
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• pp.126-134
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• 2014

This study studied female Hanbok that appeared in Korean movies in different periods, and investigated the changes and flow of the Hanbok in the movies based on the design and the form. Research scope is limited to Hanbok in Korean movies released between 1950' and 1980', and in order to study Hanbok in movies, snapshots of Korean movies for each period are used. Pictures are sourced from the Korean movie database, and forms and colors of Hanbok in the pictures are classified into 7 categories. Based on this, characteristics, changes and flow of Hanbok for each period are studied. Based on this, by investigating the Hanbok in Korean movies from silhouette and design perspectives and comparing each period, it is found that the following changes have been made: From 1950' to 1980', generally Min Jeogori (Normal Korean traditional jacket) had a higher rate. Up to early 1960', wide collar and collar strip were trends, but from 70' to 80', they have been remarkably narrowed. After liberation, ease and functional elements of western clothing were accepted. From 1950' to 80', generally wide and round shape sleeve were used. Also, from 50' to 80', normally skirt and Jeogori had the same color and fabric. Lastly. as Hanbok with western style fabric, rather than traditional Hanbok fabric was increasing, Hanbok with variously patterned fabric was shown. The lack of colored pictures led of limited research materials, and so a more accurate and sophisticated research on material and design was not possible, However, it is meaningful that this study has investigated changes and flow of Hanbok in modern Korean movies.

• 복식문화연구
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• 제2권2호
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• pp.203-223
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• 1994

This study intends to look through the development of female costume during the 100 years after the flowering time. By refocusing on the flow the Korean female costume, this study present representative costume style of that time and find out the fashion cycles. For this purpose, the clothes during the 100 years (from 1890 to 1993) were observed and changes of female costume, hair style and shoes were observed. Literature review and content analysis method used. The results of this study are as follows : For Korean costume, there were little changes in basic styles and only the jacket and skirt lengths were changed. After 1960s, as modernization of socio-cultural aspects were processed, Korean costume became formalized and structure of costume was duplicated. In the 1960's mint skirts and pantalons won popularity. In the 1970's , diverse modes including mini, midi, maxi, pantalon, hot pants appeared, and especially the jeans were popular. In the 1980's big & loose silhouette was in fashion in the beginning, and fit & flare silhouette later in the decade. In the 1990's styles emphasizing natural feminity came in fashion. In addition, by analyzing the development of female costume styles of Korea, Fashion cycles were found, expecially in the phenomenon of 70's styles repeating in the 90's.

• 소성∙가공
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• 제13권7호
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• pp.635-641
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• 2004

Today the specific outputs of modern supercharger DI diesel engine for passenger cars reach values exceeding 50kw/1. By development of the articulated piston, specific output of up to 70kw/1 are sought. In doing so, peak cylinder pressure increases from the current 14-16MPa to 18-20MPa. The Articulated piston was composed Al cast skirt part and steel forged crown part. We have the target fer the design of forging process and die of the steel forged crown part. The design parameters of the forging process of the piston were obtained by the forging industry experiences and our experimental data and analysis result of finite element simulation. Especially, the design parameter of preform in blocker die was decided by finite element simulation using numerical package DEFROM3D. And also we can verify the design parameter by conducting visio-plasticity test using plasticine material. When we compared the results of analysis and experiment, a metal flow and load curve showed good agreement. Through this research, we could design optimal preform shape of articulated piston for this supercharged DI diesel engine.

• 한국군사과학기술학회지
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• 제24권1호
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• pp.84-98
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• 2021

The hydrodynamic characteristics of amphibious assault vehicles are investigated using commercial CFD code, STAR-CCM+. Resistance performances of a displacement-type vehicle and a semi-planing type vehicle are analyzed in calm water. The self-propelled model is also computed for the semi-planing type vehicle. All computations are performed using an overset mesh system and a RANS based flow-solver coupled with a two-degree of freedom equations of motion. A moving reference frame is applied to simulate revolutions of impeller blades for a waterjet propulsion system. Grid dependency tests are performed to evaluate discretization errors for the mesh systems. The numerical analysis results are compared with the experimental results obtained from model tests. It is shown that RANS is capable of investigating the resistance and self-propulsion characteristics of high-speed amphibious assault vehicles. It is also found that a fully covered side skirt, which is covering tracks, reduces resistance and stern trim, besides increasing propulsive efficiency.

• 대한조선학회논문집
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• 제33권4호
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• pp.22-31
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• 1996

임의의 형상을 갖는 몽뚝한 물체에 작용하는 압력을 효율적으로 계산할 수 있는 방법을 확립하여, 조류중 유벽의 부유 성능을 스커트의 변형을 고려해 예측할 수 있는 방법을 개발하였다. 물체 전면의 압력은 반류영역을 박리유선을 경계로한 가상의 강체로 놓고 포텐샬 유동을 해석하여 구하였고, 후면의 압력은 기존의 실험 결과를 바탕으로 결정하였다. 압력 계산 방법의 검증을 위해 몇 가지 뭉뚝한 물체의 무한 수심에서의 압력 저항을 계산하여 기존의 실험 결과와 잘 일치한다는 것을 확인하였다. 유벽의 변형은 유동장과 연계되어 있어서 순차반복법을 통하여 구하였다. 여러 조류속도와 추의 질량에 대한 유벽의 변형된 형상과 홀수의 감소를 구하였다.

• 한국의류학회지
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• 제26권11호
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• pp.1582-1592
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• 2002

The purpose of this study is to suggest production planning model for women's apparel manufacturer, which are relevant to the situation of Korean clothing industry. The research was based on simulation method. The basic model for the simulation was developed based on the empirical data from six production fm. After verifying the basic model, low alternative production plans went through trial run. In order to suggest the application of these alternative production plans for various style numbers and lot sizes, the simulation results were compared in terms of product efficiency and product cost. The four alternative plans were as follows: 1. The first alternative was to spread out work loads among workers in order to resolve bottlenecks in work flow. So this was suited to manufacturers that had constant production without regard to changing seasons. 2. The second alternative was to merge the skirt and trouser production, which require less work load, in one line. In this line, a few machine was justified by production improvement. It was suited to cases which producted various style suits. The third and fourth alternative were using another subcontractor for assembling inner shell garments. These was compatible in manufacturers which had to product more styles and sizes of trousers and skirts than those of upper garments. 3. The third alternative was to reassign the same workers in production line. Thus, production was increased. 4. The fourth alternative was to except two worker in production line, so expenses of worker's wage was decreased. The four alternatives could be one of the cost effective manufacturing plans according to manufacturer situations.

• 한국해양환경ㆍ에너지학회지
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• 제4권1호
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• pp.38-46
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• 2001

조류 중에 설치한 이중 유벽의 유효성을 검증하기 위하여 유벽 전후 및 유벽사이에서의 유적(oil droplet)의 거동을 실험적 및 수치적으로 연구하였다. 이 연구에는 단일 유벽의 경우 유벽의 유연성이 포유성능에 미치는 영향도 포함되었다. 실험은 유적의 밀도와 근사한 구형의 고체입자가 전방 유벽의 상류 한 지점에서 방류되었을 때 그 궤적을 추적하는 것이 내용이었다. 입자는 방류되었을 때 유동장의 상태에 따라 자유표면으로 부상하거나, 유벽에 충돌 또는 유벽하로 빠져나가는 현상을 나타내게 된다. 본 논문에는 이러한 유적의 이동 경위를 해석함으로써, 이러한 유적의 유적이 운동을 시작하는 영역이 어딘가에 따라 전방유벽하로 기름이 누출될 것인지 아닌지를 판단할 수 있는 방법과 전후 유벽의 흘수의 차 그리고 수심이 이중유벽의 포유성능에 미치는 영향을 해석할 수 있는 방법을 제시하였다.

• 한국의류학회지
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• 제4권1_2호
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• pp.49-56
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• 1980

Because of the scarcity of data, a study of costume during the Baikje period can be made imaginarily only with historical records as data. According to records, Baikje costume was almost the same as that of the Koguryo period. Consequently, we may well imagine Baikje costume by means of studying such materials as the mural paintings found in Koguryo tombs and the remains found in the royal tomb of Munyung. The basic form of costume of the Baikje period, therefore, might have been like this: Both male and female wore a kind of jacket(유: JEOGORI) and trousers(고: BAJI) with female-wearing skirt (상: CHIMA) thereon. Both men and women wore overcoat(포: DURUMAGI). They used to wear headdress(관모) and used leather shoes(화) Such a form of costume can be found in the costume of HANIWA(식륜) of Japan, which belonged to the costume of HOBOK (호복) of the northern area. Under the SHIMNEUK-PUM-KWAN-KE(십육품관계) system, that is, 16 grades of official ranks, officials of the Baikje dynasty wore clothes, coronets and belts, all of which differed from one another in colors, according to ranks. Such a system of Baikje might have influenced the KANI-JUNI-KAI (the 12-grade color discrimination of the coronet, 관위십이계) for the government officials of ancient Japan the Suiko period. For the study of such matters, I have tried to review the flow of the Korean culture into ancient Japan in the field of costume.

• 한국농림기상학회지
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• 제13권4호
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• pp.176-184
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• 2011

본 연구에서는 폐쇄집수역의 냉기호 현상을 기존의 냉기집적효과와 연계하여 일 최저기온 분포를 모의할 수 있는 방법을 제시하였다. 집수역 내 찬 공기가 담길 '그릇'의 용적을 계산하고 '그릇'안에 집적되는 냉기량을 고도에 따라 표현하였다. 기존의 계곡지형 냉기류에 냉기호를 합산하여 냉기집적으로 인한 기온하강분을 계산하였다. 이때 냉기호의 '수면'은 일교차 조건에 따라 변화시켰다. 이 방법을 검증하기 위해 경남 하동군 악양계곡의 200m 이하 냉기호 형성지역에 기상관측기 10대에서 1분 단위로 기온을 측정하였다. 5월 17일 새벽에는 형제봉 정상에서 적외선 영상 복사계로 지면온도분포를 획득하였다. 개선된 소기후 모형을 적용하여 0530 LST의 기온 분포를 30m 해상도로 추정한 결과 그 양상이 적외선 열영상 분포와 유사하였다. 10개 기상관측지점에 해당하는 격자의 기온추정값을 추출하여 실측값과 비교한 결과, MAE는 1.01에서 0.60으로, RMSE 1.30에서 0.71으로 감소하여 집수역 출구에 가까운 저지대 평야부분에서 발생하는 기존 방법에 의한 오차가 개선되었다.