• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2020년도 추계국제학술대회
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• pp.63-63
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• 2020

Rice stripe virus (RSV) disease is one of the major constraints in rice production, transmitted by the small brown planthopper (SBPH; Laodelphax striatellus). Upon RSV infection, plants develop typical symptoms, which include chlorosis and weakness of newly emerged leaves, white and yellow spots, stripe on leaves, and necrotic and wilting leaves, resulting in plant growth inhibition, oxidative damage that may culminate in programmed cell death (PCD) and plant death in severe epidemics. Although RSV-resistant quantitative trait loci (QTLs), Stv-a, Stv-b, and Stv-bi, were mapped using various resistant varieties, one RSV-resistant gene, OsSOT1, has been identified so far. In this study, we used the rice cultivar Zenith, known to carry Stv-b, to investigate novel RSV-genes through fine mapping. Therefore, we crossed Zenith (Donor parent, RSV resistant) with Ilpum (Recurrent parent, RSV susceptible) to fine-map using a BC₂F₂ population of 2100 plants. Chromosome segment introgression lines that were heterozygous at a different region were selected, two types of heterozygous lines showed an heterozygous genotype between Sid2 and Sid75 to Indel9 and RM6680. Interestingly, we identified qSTV11^Z region harboring Stv-b, covering about 171-kb region between the InDel markers Sid75 and Indel8. The localization of qSTV11^Z provides useful information that could be used for marker-assisted selection and determination of genetic resources in rice breeding.

• 만화애니메이션 연구
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• 통권33호
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• pp.449-467
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• 2013

21세기의 현대사회는 테크놀로지의 비약적 발전을 이루었으며 다양한 디지털 기기의 등장으로 인한 매체의 다각화로 시각적 표현의 한계는 점점 축소되고 있다. 따라서 테크놀로지와 예술의 융합은 시각예술 표현의 한계선을 최소화하였고 대중은 그들이 만들어 낸 현실과 비현실의 경계를 넘나드는 새로운 시각 자극에 신선함을 느끼게 되었다. 그러한 새로운 접근 법 중 하나인 빛에 대한 테크놀로지와 예술의 조합은 다양한 순수예술이나 영상 디자인과 같은 시각예술분야로 포함되고 있으며, 그 중 현재 고해상도의 프로젝터를 활용하여 건물이나 도시의 조각물 등의 구조물을 스크린으로 삼아 투영된 매핑(mapping) 테크놀로지를 예술에 접목하려는 시도가 최근 다양하게 연구 되고 있다. 본 연구에서는 새로운 테크놀로지로서 프로젝션 매핑(projection mapping)의 기법에 대한 정의를 문헌 연구를 통하여 고찰해 보고 매핑 사례 중 시지각적 효과를 극대화 하는 3D 애니메이션이 적용된 사례 연구와 더불어 그에 따른 영상 표현특성을 분석 하였다. 3D애니메이션을 통해 존재하지 않는 환영(Illusion)을 창조하고 대중에게 시각적 쾌감을 부여하는 프로젝션 매핑(projection mapping)과 3D 애니메이션의 조합은 앞으로 예술과 테크놀로지의 융합 이라는 시대사조에 걸맞은 시각예술의 새로운 가능성을 지닌 시너지효과를 창출할 것으로 기대된다.

• Journal of Information Processing Systems
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• 제10권1호
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• pp.23-35
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• 2014

Recently, novel application areas in digital geometry processing, such as simulation, dynamics, and medical surgery simulations, have necessitated the representation of not only the surface data but also the interior volume data of a given 3D object. In this paper, we present an efficient framework for the shape approximations of spherical solid objects based on trivariate B-splines. To do this, we first constructed a smooth correspondence between a given object and a unit solid cube by computing their harmonic mapping. We set the unit solid cube as a rectilinear parametric domain for trivariate B-splines and utilized the mapping to approximate the given object with B-splines in a coarse-to-fine manner. Specifically, our framework provides user-controllability of shape approximations, based on the control of the boundary condition of the harmonic parameterization and the level of B-spline fitting. Experimental results showed that our method is efficient enough to compute trivariate B-splines for several models, each of whose topology is identical to a solid sphere.

• International Journal of Contents
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• 제3권4호
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• pp.15-21
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• 2007

Image morphing deals with the metamorphosis of one image into another. The field morphing depends on the manual work for most of the process, where a user has to designate the control lines. It takes time and requires skills to have fine quality results. It is an object of this paper to propose a method capable of realizing the semi-automation of field morphing using adaptive vertex correspondence based on image segmentation. The adaptive vertex correspondence process efficiently generates a pair of control lines by adaptively selecting reference partial contours based on the number of vertices that are included in the partial contour of the source morphing object and in the partial contour of the destination morphing object, in the pair of the partial contour designated by external control points through user input. The proposed method generates visually fluid morphs and warps with an easy-to-use interface. According to the proposed method, a user can shorten the time to set control lines and even an unskilled user can obtain natural morphing results as he or she designates a small number of external control points.

• 산업공학
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• 제10권3호
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• pp.125-132
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• 1997

We proposed a 2-step neural network approach for estimating machining parameters of electric discharge wire cut. The first step net, which is described as a backward neuro-estimation, is designed for estimating coarse cutting parameters while the second phase net, as a polishing forward neuro-estimation, is utilized for determining fine parameters. Sequential estimation procedure, based on backward and forward net, is performed using the net's approximation capability which is M to 1 and 1 to M mapping property. Experimental results an given to evaluate the accuracy of the proposed 2-step neuro-estimation.

• Structural Engineering and Mechanics
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• 제41권4호
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• pp.559-573
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• 2012

An adaptive modeling and simulation technique is introduced for the effective and reliable fluid-structure interaction analysis using MSC/Dytran for large-scale complex pressurized liquid containment. The proposed method is composed of a series of the global rigid sloshing analysis and the locally detailed fluid-structure analysis. The critical time at which the system exhibits the severe liquid sloshing response is sought through the former analysis, while the fluid-structure interaction in the local region of interest at the critical time is analyzed by the latter analysis. Differing from the global coarse model, the local fine model considers not only the complex geometry and flexibility of structure but the effect of internal pressure. The locally detailed FSI problem is solved in terms of multi-material volume fractions and the flow and pressure fields obtained by the global analysis at the critical time are specified as the initial conditions. An in-house program for mapping the global analysis results onto the fine-scale local FSI model is developed. The validity and effectiveness of the proposed method are verified through an illustrative numerical experiment.

• Bulletin of the Korean Chemical Society
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• 제33권9호
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• pp.3099-3102
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• 2012

• 한국식물생명공학회:학술대회논문집
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• 한국식물생명공학회 2005년도 추계학술대회 및 한일 식물생명공학 심포지엄
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• pp.402-402
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• 2005

• 한국동물학회:학술대회논문집
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• 한국동물학회 2000년도 한국생물과학협회 학술발표대회
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• pp.242.3-243
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• 2000

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• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.258-258
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• 2022