• 패션비즈니스
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• 제13권4호
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• pp.137-153
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• 2009

Recently, young men have become more muscular as they become more interested in physical figure. However, most of these muscular men have fit problems regarding ready-made clothes. In view of this, this study aimed to develop a prototype jacket pattern for muscular men. For this study, five muscular men were selected to put on existing jacket pattern for wearing tests. The regression formula, in which muscular men body measures were adopted, was applied to unsuitable parts, especially the areas determined not to be appropriate in the evaluation of existing jacket pattern wearing tests. After the first and the second jacket pattern wearing tests, the final jacket pattern suitable for muscular men was developed. The results of the study were as follows: In order to make up for the problem of the loosening of the lapel area, due to the development of the chest muscle, the chest circumference line on the chest area of the pattern was cut to be 1.0cm wide; thus, the front length was modified with an increase. The wearing tests found that a wearers felt discomfort from the tight armhole area, so the armhole depth was set to be a little lower than that of ready-made clothes. A muscular men needs much more extra quantity in this area because the upper part of the back side is projected due to the greater development of the trapezius muscle and the deltoid than in average men. Hence, concerning the standard line for the length of the back interscye, ease of 1.0cm was added to the regression equation formula {(0.371${\times}$chest circumference+3.145)/2} in order to resolve the discomfort with the back area. Also, for the biacromion length, the upper arm protruded more than the shoulder point of the jacket because of the development of the deltoid and the upper arm muscle, and it was set to be wider than the actual shoulder. In order to solve the problem of discomfort from the narrow neck area during the wearing of a jacket owing to the development of the trapezius muscle, extra ease of 0.5cm was added to chest circumference/12-0.5cm in the existing jacket prototype to the width of back of the neck, and it was corrected to be chest circumference/12.

• Biotechnology and Bioprocess Engineering:BBE
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• 제7권5호
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• pp.275-280
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• 2002

In order to control glucose concentration during fed-batch culture for antibiotic production, we applied so called “software sensor” which estimates unmeasured variable of interest from measured process variables using software. All data for analysis were collected from industrial scale cultures in a pharmaceutical company. First, we constructed an estimation model for glucose feed rate to keep glucose concentration at target value. In actual fed-batch culture, glucose concentration was kept at relatively high and measured once a day, and the glucose feed rate until the next measurement time was determined by an expert worker based on the actual consumption rate. Fuzzy neural network (FNN) was applied to construct the estimation model. From the simulation results using this model, the average error for glucose concentration was 0.88 g/L. The FNN model was also applied for a special culture to keep glucose concentration at low level. Selecting the optimal input variables, it was possible to simulate the culture with a low glucose concentration from the data sets of relatively high glucose concentration. Next, a simulation model to estimate time course of glucose concentration during one day was constructed using the on-line measurable process variables, since glucose concentration was only measured off-line once a day. Here, the recursive fuzzy neural network (RFNN) was applied for the simulation model. As the result of the simulation, average error of RFNN model was 0.91 g/L and this model was found to be useful to supervise the fed-batch culture.

• Asian-Australasian Journal of Animal Sciences
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• 제21권5호
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• pp.745-753
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• 2008

Gene-manipulated mice were discovered for the first time about a quarter century ago. Since then, numerous sophisticated technologies have been developed and applied to answer key questions about the fundamental roles of the genes of interest. Functional genomics can be characterized into gain-of-function and loss-of-function, which are called transgenic and knock-out studies, respectively. To make transgenic mice, the most widely used technique is the microinjection of transgene-containing vectors into the embryonic pronucleus. However, there are critical drawbacks: namely position effects, integration of unknown copies of a foreign gene, and instability of the foreign DNA within the host genome. To overcome these problems, the ROSA26 locus was used for the knock-in site of a transgene. Usage of this locus is discussed for the gain of function study as well as for several brilliant approaches such as conditional/inducible transgenic system, reproducible/inducible knockdown system, specific cell ablation by Cre-mediated expression of DTA, Cre-ERTM mice as a useful tool for temporal gene regulation, MORE mice as a germ line delete and site specific recombinase system. Techniques to make null mutant mice include complicated steps: vector design and construction, colony selection of embryonic stem (ES) cells, production of chimera mice, confirmation of germ line transmission, and so forth. It is tedious and labor intensive work and difficult to approach. Thus, it is not readily accessible by most researchers. In order to overcome such limitations, technical breakthroughs such as reporter knock-in and gene knock-out system, production of homozygous mutant ES cells from a single targeting vector, and production of mutant mice from tetraploid embryos are developed. With these upcoming progresses, it is important to consider how we could develop these systems further and expand to other animal models such as pigs and monkeys that have more physiological similarities to humans.

• 한국광학회지
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• 제14권4호
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• pp.429-433
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• 2003

전파정수가 랜덤하게 분포하는 선로 상에서 파동함수의 해의 성질을 고찰함으로써 랜덤한 매질 내의 파동의 국재현상에 대한 이론적 해석을 시도하였다 파동의 국재는 함수의 해가 증대에서 감쇠로 전환하는 과정에서 발생하므로, 먼저 파동의 증대가 감쇠로 전환되는 과정을 이론적으로 규명하기 위하여 2차 파동방정식을 Bragg조건 등을 이용하여 근사적으로 1차 슐뢰딩거의 방정식의 형태로 유도하였다. 그리고 이 방정식이 취할 수 있는 여러 가지 해의 성질과 그 해가 성립하기 위한 조건에 대하여 고찰하였으며, 파동방정식의 해의 국재성과 전파정수의 변동에 대한 관계에 대하여 몇 가지 조건을 조사하였다. 지수형의 해에서 유전율이 $\varepsilon$=(0,0,$\varepsilon$$_{0}$)인 경우 $\varepsilon$$_{0}$는 파동의 위상에 관여하여 국재현상을 일으키는 요소가 된다는 것을 확인하였다.

• 복식
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• 제62권2호
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• pp.26-39
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• 2012

This study intends to reconsider pleat, which was undermined as something too simple to express the details for women's costume, by focusing on the aesthetic value of plea in men's costumes in the west before the 20th century. Furthermore, based on the aesthetic value of the pleat, diverse studies on contemporary men's costumes shall help to attempt to set up a basis for the new mode of men's costume. The pleat, a component in the costume since the ancient times, had unique characteristics including functionality, a sense of volume, directing effect that is caused by line repetitions and formativeness that results through elasticity. First, the aesthetics of the pleat before the 20th century shows rhythmic sense through the repetition of the pleat line as shown in the drape type costume, and it also shows a sense of volume as the pleat is moved along the motion of the body. Second, it shows functionality as the expansion of space moves in accordance with the motion of body sets up an internal space of the costume that facilitates body motion. Third, the pleat extends two dimension space into three dimension space using its elasticity. It exaggerates specific parts of the costume while ignoring body shape in order to symbolize status and authority of men. Fourth, it unifies the costume by wrapping the body by using quadrangle cloths with drapers, and expanding the silhouette with the pleat artificially to conceal the physical character and personality of the wearer. The physical character of the wearer disappears into the space made by the pleat. The pleat reveals the voluptuous beauty within.

• 만화애니메이션 연구
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• 통권11호
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• pp.41-53
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• 2007

최근의 영화는 기존의 애니메이션과 실사영화라는 범주로 나눌 수 없을 만큼 그 경계가 모호하다. 디지털영화의 등장이 애니메이션과 실사영화의 경계를 허물고 있는 것이다. 이 논문은 애니메이션과 실사영화, 디지털영화의 프레임과 이를 근간으로 한 미장센의 특성을 다루고 있다. 애니메이션과 실사영화는 각각 회화적, 사진적 프레임 특성을 가지고 있지만, 합성이미지를 근간으로 하는 디지털영화는 두 양식의 프레임 특성을 모두 갖게 된다. 이는 결국 영화작가의 표현스타일인 미장센의 차이로 나타난다.

• 한국멀티미디어학회논문지
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• 제13권8호
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• pp.1115-1127
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• 2010

TFT-LCD 생산 과정에서 발생하는 결함을 정확하게 분류하여 결함 유형에 따라 폐기, 사용가능 등의 의사결정을 적절하게 내리는 것은 수율 증가 및 생산성 향상에 필수적인 요소이다. 본 논문에서는 TFT-LCD 생산 라인에서 획득한 결함 영상에 대하여 명암도 분포(intensity distribution) 및 결함 영상의 형태 특징(shape feature)을 분석하여 효과적으로 필름 결함 유형을 분류하는 기법을 제시한다. 본 연구에서는 먼저 필름 결함 영상을 결함 영역과 결함이 아닌 배경 영역으로 이진화하고, 결함 영역에서 결함의 선형성(linearity), 명암도 분포를 고려한 형태 특징 등의 여러 가지 특징을 분석하여 기준 영상(referential image) 데이터베이스를 구축하였으며, 분류하고자 하는 결함 영상과 데이터베이스에 저장된 기준 영상과의 매칭 비용 함수(matching cost function)를 정의하여 적절히 매칭시킴으로써 결함의 유형을 결정하였다. 제시한 기법의 성능을 검증하기 위하여 실제 TFT-LCD 생산 라인에서 획득한 결함 영상들을 대상으로 분류 실험을 수행하였으며, 실험 결과 생산 라인에서 이용할 수 있을 정도의 상당한 수준의 분류 정확도를 달성하였음을 보여주었다.

• 한국멀티미디어학회논문지
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• 제15권11호
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• pp.1341-1348
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• 2012

본 논문에서는 변형된 모젯 변환을 이용하여 의료영상에서 회전된 물체의 회전각을 추출하고 보정하는 새로운 방법을 제안한다. 모젯 변환은 이산 형태의 라돈 변환으로서 변환 영역은 입력 영상에 대한 투영값으로 구성된다. 최근 영상 정보의 압축을 위해 주로 연구되던 모젯 변환을 회전 물체의 보정에 적용하기 위해 본 논문에서는 다음과 같이 모젯 변환을 변형하여 사용한다. 먼저 회전 영상에서 정확한 회전각을 추출하기 위해, 투영선 상의 화소 뿐만 아니라 투영선에 인접한 화소들도 투영값 계산에 반영한다. 그리고 모젯 변환에서의 계산량 감소를 위해 각 투영 방향에 대해 영상의 중심 화소를 통과하는 하나씩의 투영만을 실행한다. 또한 대상 영상이 회전 영상임을 고려하여 영상의 회전 시 삭제되거나 추가되지 않는 관심 영역을 설정하여 이 영역에 대해서만 투영값을 계산한다. 모의실험을 통해 제안된 방법이 다양한 의료 영상의 회전각 추출 및 보정에 매우 효율적임을 알 수 있었다.

• 대한조선학회논문집
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• 제54권6호
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• pp.461-469
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• 2017

A segment of the wave board has been expressed as a submerged line segment in the two dimensional wave flume. The lower end of the line segment could be extended to the bottom of the wave flume and the other opposite upper end of the board could be extended to the free surface. It is assumed that the motion of the wave board could be defined by the sinusoidal motion in horizontal direction on either end of the wave board. When the amplitude of sinusoidal motion of the wave board on lower and upper end are equal, the wave board motion could express the horizontally oscillating submerged segment of piston type wave generator. The submerged segment of flap type wave generator also could be expressed by taking the motion amplitude differently for the either end of the board. The pivot point of the segment motion could play a role of hinge point of the flap type wave generator. Simplified analytic solution of oscillating submerged wave board segment in water of finite depth has been derived through the first order perturbation method at two dimensional domain. The case study of the analytic solution has been carried out and it is found out that the solution could be utilized for the design of wave generator with arbitrary shape by linear superposition.

• 한국항공우주학회지
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• 제42권3호
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• pp.270-278
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• 2014

본 논문에서는 우주물체 궤도예측의 개선 방안에 관하여 기술하였다. 운용위성과 우주물체와의 근접 가능성 여부를 확인하기 위해 이용되는 TLE(Two-Line Element)를 가관측으로 사용하였고, 비행역학시스템을 통해 궤도결정 및 예측을 수행하였다. 궤도를 결정함에 있어 일정기간 내 일련의 TLE를 이용하여 상태벡터를 가정하였고, 결정기간 및 가관측수(pseudo-observations)에 따른 예측결과 오차를 분석하였다. 또한, 제안된 방식을 적용할 경우 궤도예측 정밀도가 향상 되는지를 알아보기 위해 수 미터 수준의 정밀궤도 확인이 가능한 아리랑위성 2, 3호를 대상으로 먼저 적용하였으며, 동일한 조건으로 우주물체에 적용한 결과를 분석하였다. 우주물체 궤도예측의 RMS 오차 비교 결과, 7일 전파기준으로 궤도 예측 정밀도를 약 90% 향상시킬 수 있었다. 우주물체의 개선된 궤도예측은 매일 수행되는 충돌가능성 분석에 이용되어 위험성이 높은 근접 우주물체의 1차적인 선별에 활용가능 할 것이다.