• Proceeding of EDISON Challenge
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• 2016.03a
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• pp.576-581
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• 2016

해양환경에서 큰문제가 되고 있는 아주 작은 크기의 플라스틱 입자인 미세플라스틱(Microplastic)은 잔류성이 크고 생물축적성이 있는 잔류성 유기오염 물질(POP)을 잘흡착하여 해양환경과 먹이사슬에 지대한 피해를 끼친다. 본 연구에서는 해양에 존재하는 대표적인 미세플라스틱 uPVC와 입자상의 잔류성 유기오염 물질 PAH를 원형 실린더로 가정하여 해양 환경에서 침강하고 있는 미세플라스틱이 잔류성 유기오염 물질에 의해 오염될 가능성을 알아보았다 이를 위해 표층및 심층수 환경에서 반지름에 따른 충돌효율과 접촉 시간을 구하여 두 실린더가 접촉할 시간의 기댓값인 기대 접촉시간을 계산하였다.

• Journal of KIISE:Computer Systems and Theory
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• v.31 no.7
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• pp.414-420
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• 2004

Among the desirable properties of a piecewise linear parameterization, guaranteeing a one-to-one mapping (i.e., no triangle flips in the parameter plane) is often sought. A one-to-one mapping is accomplished by non-negative coefficients in the affine transformation. In the Floater's method, the coefficients were computed after the 3D mesh was flattened by geodesic polar-mapping. But using this geodesic polar map introduces unnecessary local distortion. In this paper, a simple variant of the original shape-preserving mapping technique by Floater is introduced. A new simple method for calculating barycentric coordinates by using straightest geodesics is proposed. With this method, the non-negative coefficients are computed directly on the mesh, reducing the shape distortion introduced by the previously-used polar mapping. The parameterization is then found by solving a sparse linear system, and it provides a simple and visually-smooth piecewise linear mapping, without foldovers.

• Computational Structural Engineering
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• v.10 no.1
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• pp.193-200
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• 1997

Even though there are many analysis methods of circular tanks on elastic foundation, the finite element method is widely used for that purpose. But the finite element method requires a number of memory spaces, computation time to solve large stiffness equations. In this study many the simplified methods(Analogy of Beam on Elastic Foundation, Foundation Stiffness Matrix, Finite Element Method and Transfer Matrix Method) are applied to analyze a circular tank on elastic foundation. By the given analysis methods, BEF analogy and foundation matrix method, the circular tank was transformed into the skeletonized frame structure. The frame structure was divided into several finite elements. The stiffness matrix of a finite element is related with the transfer matrix of the element. Thus, the transfer matrix of each finite element utilized the transfer matrix method to simplify the analysis of the tank. There were no significant difference in the results of two methods, the finite element method and the transfer matrix method. The transfer method applied to a circular tank on elastic foundation resulted in four simultaneous equations to solve completely.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.516-520
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• 2009

In garment manufacturing process, making a prototype of a product is a preceding part ahead of mass production. However, it takes up a lot of trial and error, let alone the expense in the past manufacturing system. In this paper we introduce the process which can replace the past one with using recently developed computer graphics technique. We also demonstrate this method is valid on a variety of clothes compared to the real experiments. In this process, a designer can make a garment, simulate it in 3D computer system, and easily fix the problems before finalizing a prototype.

• Journal of Fashion Business
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• v.27 no.3
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• pp.96-114
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• 2023

In modern society, there is a tendency to prioritize both fashion and comfort, with a preference for loose-fit clothing that enhances mobility. While darts may not be visibly present on the garment's exterior, their effects should be dispersed and incorporated into the design. However, there is a significant lack of systematic research on dartless patterns in the current state. Therefore, this study focuses on investigating dartless patterns used in loose-fit clothing tailored to the body measurements of women in their 20s. The objective of this research is to develop foundational dartless patterns that serve as a basis for diverse design possibilities in loose-fit clothing. To achieve this purpose, seven dartless patterns introduced in clothing construction references were selected for the production of experimental prototypes, which were then subjected to visual evaluations by a panel of experts. Based on the evaluation results, superior patterns were selected and they underwent modification and improvement to develop the research patterns. The developed research patterns were derived through the formulation of calculation formulas, and based on these formulas, garments were produced. Subsequently, a second round of visual evaluations was conducted by a panel of experts, and notable improvements were observed in most of the aspects assessed. However, it should be noted that this study was limited to women in their 20s it did not explore a wide range of fabrics. Therefore, further research is needed in the future.

• The Korean Journal of Zoology
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• v.36 no.2
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• pp.293-303
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• 1993

쇠오징어(Sepiella maindroni)흠반의 외측 상피조직에서 3종류의 감각세포(A, B 및 D형 감각세포)와, 1종류의 감각상피세포(C형 감각 상피세포) 그리고 2종류의 점액세포(a 및 b형 점액세포)가 각각 관찰되었다. A 및 B형 감각세포는 분포상태가 다를 뿐 형태는 거의 유사한 세포이고 많은 분비액포를 지닌 해면질 형태의 세포로서 전자 밀도가 낮은 물질을 분비하는 분비성 감각세포로 확인되었다. 0형 세포는 매우 작은 감각세포로서 세포의 자유면에 긴 융모가 밀생되어있었고, 측면원형질막은 불규칙한 수지상 연접을 이루고 있었다. 이 세포는 전자밀도가 매우 높아서 검게 보였다. C형 감각 상피세포도 세포의 자유면에 긴 미세융모가 밀생되어있는 단층 원주상 세포로서. 이 세포 역시 측면원형질막이 불규칙한 수지상 연접을 이루고 있고. 엽접내에는 많은 소포와 약간의 사립제가 관찰되었다. 3형 점액세포는 세포질속에 내강이 팽창된 활면소포체를 소지하고 있으며 전자밀도가 높은 구형의 점액과립을 형성하였고, b형 점액세포도 전자밀도가 중등도인 점액질 과립을 소지하고 있었다.

• Journal of the Korean Society of Clothing and Textiles
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• v.26 no.1
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• pp.62-73
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• 2002

The purpose of this study was to develop men's formal jacket pattern for the Korean males of age 25 to 34 age with an average physique. Through the survey on seven industries of the ready-made men's wear, we investigated size systems and jacket patters presently practiced. From the fitting test of four patterns (three for ready-made jacket patterns, one for educational pattern) the moat favorable and comfortable pattern was selected. New experimented jacket pattern was based on it. The findings were as followed. 1) Survey of the domestic ready-made garment industries showed that each company classified its own manufactured goods according to its own size systems. 2) Anthropometric measurments of forty males for the subjects of lilting test were agreed to the survey of National Anthropometric of Korean(1997). These were also compatible to the standard size (100-88-175) of investigated industries. 3) Experimental jacket pattern was completed through the three times rectification and it gained higher ratings.

• The Korean Journal of Zoology
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• v.35 no.1
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• pp.58-69
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• 1992

곤충 혈구의 이물질에 대해 면릉고청을 확인하기 위하여 평균지름 10 nm의 gold입자를 함유한 colloidal gold solution을 등 검은 메뚜기 (Euprepocnemis shirakii Bolivar) 성충의 복강에 주입한 후, 혈구의 반응양상을 전자현미경으로 관찰하였다. Gold 입자에 대한 혈구의 면역반응은 전체 혈구의 약 28%를 차지하고 있는 Plasmatocytes에서 식세포작용(phagocytosis)의 형태로 확인되었고, 다른 종류의 혈구는 반응하지 않았다. Plasmatocytes에 의해 식세포작용의 초기반음은 많은 원형질 돌기를 형성하여 이물질을 포획하는 태면반응과 원형질악의 함입에 의한 식포의 형성과정으로서, 이 과정은 이물질 주입후 10분이내에 완료되는 것으로 관찰되었다. 혈구내에 형성된 식포는 초기에 전자밀도가 낮은, 천상 또는 섬잡상의 내부구조를 가지고 있었으나, 일차 Iysosome의 융합에 의해 전자밀도가 높은 과립상으로 된 후, 결정상의 내부구조로 변형되었으며, 그 이후의 단계에서 multivesicular body형태의 이차 Iysosome을 형성하였다.

• The Korean Journal of Mycology
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• v.13 no.1
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• pp.1-10
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• 1985

This experiment was undertaken to investigate proper conditions for protoplast isolation from strains of Agaricus bisporus, Flammulina velutipes, Lentinus edodes, Pleurotus florida, Pleurotus ostreatus, Pleurotus sajor-caju and Volvariella volvacea. Combination of ${\beta}-D-glucanase$, novozym 234 and snail enzyme with 0.6M $MgSO_4$ in 0.05M Na-maleate buffer, pH 5.8 was the most effective for isolation of protoplasts. High yields of protoplasts were obtained from $4{\sim}5$ days old mycelia of P. florida and P. ostreatus on mushroom complete agar medium. Protoplasts were also obtained in good yield from other fungi but A. bisporus and V. volvacea. In the latter two cases protoplast release was observed; however, the yield was much lower than those of the other fungi.

• Journal of Fashion Business
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• v.20 no.5
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• pp.45-59
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• 2016

This research is a study to develop basic block patterns for adult males. The subjects were 20 men in their 20s, and we tested 6 basic bodice blocks that are used in academia and industry. First, a comparative analysis of the patterns of the bodice blocks was conducted and the test garments were made, and then their appearances were evaluated during wearing tests. Based on the test results, we intended to select a bodice block that is a good fit when it is put on and to use it as basic data in order to design a man's bodice block for the future. The research results are as follows: First, a comparison of the 6 bodice block drafts showed that they used differently calculated ease allowances at chest circumference and width, waist circumference, shoulder length, etc. for which the upper chest circumference is used as a reference. Second, when the appearances of the test garments were tested, the average scores were high in the order of B> H> P> K> M> L. Pattern B was superior in the areas of the neck circumference and shape, ease allowance at the back of the neck, circumference of the front of the neck, location of side width, ease allowance at sides, armhole width and depth. But in the other test items, there were cases where other patterns were superior.