• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.93-93
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• 2017

To develop rice cultivars with increased biomass and grain yield, superior lodging resistance is an essential trait. The new breeding approach can be adopted for the improvement of stem lodging resistance by enhancing culm strength. The resistance to breaking type lodging is attributed to bending moment of basal culm (M), which is composed of the section modulus (SM) and bending stress (BS). The resistance to the bending type lodging is attributed to flexural rigidity (FR) of stem, which is composed of the secondary moment of inertia (SMI) and Young's modulus (YM). Starch and cell wall components such as cellulose, hemicellulose and lignin also play a significant role in physical strength of culm, and thus affect lodging. Leaf Star has a superior lodging resistance due to its thick and stiff culm because of its high M and FR compared with Koshihikari. Furthermore, Leaf Star contains high densities of hemicellulose, cellulose and low lignin density in culm compared with Koshihikari. In this study, we performed QTL analysis for these traits associated with culm strength, using 94 recombinant inbred lines (RILs, $F_8$), derived from a cross between Leaf Star and Koshihikari. The SM in the RILs showed a continuous distribution. QTLs for SM were detected on chrs.2, 3 and 10. Leaf Star alleles increased SM on chrs. 2 and 3, but Koshihikari allele increased on chr.10. These QTLs overlapped with those QTLs identified using backcrossed inbred line derived from a cross between Chugoku 117 and Koshihikari, the parents of Leaf Star. The FR in Leaf Star was higher than that in Koshihikari due to the larger SMI and YM. 3 QTLs for SMI were detected on chrs.2, 3 and 10. Leaf Star alleles increased SMI on chrs.2 and 3, and Koshihikari alleles increased on chr.10. One QTL on chr.3 and two QTLs on chr.5 for hollocelulose content were detected with Leaf Star alleles contribution. Moreover, two QTLs were detected for hemicellulose density on chrs.3 and 5. Leaf Star allele increased hemicellulose density on chr.5, and Koshihikari allele increased on chr.3. Furthermore, two QTLs for cellulose density were detected on chr.5, and one QTL on chr.2. For starch content, one QTL on chr.3 and two QTLs on chr.5 with Leaf Star alleles contribution were detected. TULK-6 carrying a chromosome segment of Leaf Star on chr.5 in the Koshihikari genetic background showed higher densities of starch and hemicellulose than those in Koshihikari. These results suggest that the detected QTLs for culm strength could be utilized for the improvement of lodging resistance in rice by marker-assisted selection.

• 충청수학회지
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• 제25권3호
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• pp.553-562
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• 2012

It has been proved that the union of two linear star-configurations in $\mathbb{P}^2$ of type $t{\times}s$ for $3{\leq}t{\leq}9$ and $3{\leq}t{\leq}s$ has generic Hilbert function. We extend the condition to $t$ = 10, so that it is true for $3{\leq}t{\leq}10$, which generalizes the result of [7].

• 충청수학회지
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• 제29권4호
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• pp.565-572
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• 2016

In this paper, the concept of $PC^{\star}$-closed sets is introduced. $PC^{\star}$-closed sets contain $pre^*_I$-open and $pre^*_I$-closed sets, ${\mathcal{RPC}}_I$ and $pre^*_I$-closed sets, ${\mathcal{RPC}}_I$ and weakly $I_{rg}$-closed sets.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1988년도 추계학술대회 논문집 학회본부
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• pp.224-228
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• 1988

Extensive development work which was carried out by Gold Star Cable Co., Ltd. has led to the optimal design, manufacture and test of fully engineered cable system for 345 kV self- contained oil filled (OF) underground cable. Details of design criteria and of tests are given. development of 345kV OF cable results in sucessful operations for ultra-high voltage power transmission requirement.

• 천문학회지
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• 제29권spc1호
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• pp.71-72
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• 1996

We show that the star formation activity of spiral galaxies has a great variety. The star formation variation in a time scale of $10^8$ yr and the mechanism responsible for the variation are discussed.

• 대한수학회논문집
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• 제31권4호
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• pp.683-693
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• 2016

In [1], the authors proved that the finite union of linear star-configurations in $\mathbb{P}^2$ has a generic Hilbert function. In this paper, we find the minimal graded free resolution of the union of two linear star-configurations in $\mathbb{P}^2$ of type $s{\times}t$ with $\(^t_2\){\leq}s$ and $3{\leq}t$.

• 정보처리학회논문지:소프트웨어 및 데이터공학
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• 제12권7호
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• pp.303-314
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• 2023

음성 변환(Voice Conversion)은 개인의 음성 데이터를 다른 사람의 음향적 특성(음조, 리듬, 성별 등)으로 재생성할 수 있는 기술로, 교육, 의사소통, 엔터테인먼트 등 다양한 분야에서 활용되고 있다. 본 논문은 StarGAN-VC 모델을 기반으로 한 접근 방식을 제안하여, 병렬 발화(Utterance) 없이도 현실적인 음성을 생성할 수 있다. 고정된 원본(source) 및 목표(target)화자 정보의 원핫 벡터(One-hot vector)를 이용하는 기존 StarGAN-VC 모델의 제약을 극복하기 위해, 본 논문에서는 사전 훈련된 Rawnet3를 사용하여 목표화자의 특징 벡터를 추출한다. 이를 통해 음성 변환은 직접적인 화자 간 매핑 없이 잠재 공간(latent space)에서 이루어져 many-to-many를 넘어서 any-to-any 구조가 가능하다. 기존 StarGAN-VC 모델에서 사용된 손실함수 외에도, Wasserstein-1 거리를 사용하여 생성된 음성 세그먼트가 목표 음성의 음향적 특성과 일치하도록 보장했다. 또한, 안정적인 훈련을 위해 Two Time-Scale Update Rule (TTUR)을 사용한다. 본 논문에서 제시한 평가 지표들을 적용한 실험 결과에 따르면, 제한된 목소리 변환만이 가능한 기존 StarGAN-VC 기법 대비, 본 논문의 제안 방법을 통해 다양한 발화자에 대한 성능이 개선된 음성 변환을 제공할 수 있음을 정량적으로 확인하였다.

• 보존과학연구
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• 통권22호
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• pp.5-25
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• 2001

The germicidal and insecticidal properties of volatile components extracted from star anise(Illicium verum Hooker filius) and clove (Eugenia caryophyllata THUNBERG)were evaluated against five microorganisms and three insects for the purpose of developing biocidal active substances from medicinal plants. The volatile components of star anise and clove showed strong antimicrobial effect against Aspergillus niger, Penicillium funiculosum, Mucor hiemalis, Trichoderma viride, and Aureobasidium pullulans. The extracts of each medicine also showed insecticidal effects against Sitophilusoryzae L., Lyctus linearis GOZE, and Reticulitermes spertus kyushuensis Morimoto. Fumigant toxicities to adult insects were determined. In the case of fumiganttoxicity, the extract of star anise showed 100% mortality against R. spertus, S.oryzae, and L. linearis at rates of $2.5\mu\ell$, $50\mu\ell$, $250\mu\ell$/filter paper, respectively but showed no killing effects by clove. The volatile components of star anise and clove were investigated by means of GC/MS. The main constitute, anethole among 20components from star anise and eugenol among 9 components from clove were identified. The mixture of star anise and clove as the volume ratio of 2 : 1 showed higher properties for antimicrobial and insecticidal effect than each volatile component. A. niger was inhibited by the mixture(125ml/$m^3$) for up to 10 days of exposure. Also, from the result of observing state change of organic materials by volatile extracts of star anise and clove, volatile extracts effects have no effect on natural organic materials of organic cultural properties and can be used as biological control agent. As research contents as above, the insecticidal and germicidal agents from star anise and clove and the mixture of them were more efficient and high level to prevent biological damage for conservation of organic cultural properties. So they may be used in new development of biologicalinsecticidal and germicidal agents for conservation of cultural properties.

• 한국전자파학회논문지
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• 제15권6호
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• pp.608-618
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• 2004

본 논문에서는 Maas의 die 이중평형혼합기 회로를 개선, 새로운 pHEMT resistive star 이중평형혼합기 회로를 제안하였다. Star 구조로 구성되기 때문에 기존의 FET ring 혼합기 구조와 달리 별도의 IF balun이 필요로 하지 않는다. 또한 Maas의 직관적인 이중 balun설계 방법을 개선 EM simulation을 통한 이중 balun을 구성하는 방법을 제시하였다. 제안된 혼합기 회로는 CPW(Coplanar Waveguide)를 기반으로 하여 동국대 0.1 um GaAs pHEMT library를 이용 MMIC로 제작하였다. 제작된 혼합기는 크기 1.5 ${\times}$ 1.5 $\textrm{mm}^2$이며 DC bias로 성능 조정이 가능하다. 이것은 up/down converter로 사용 가능하며 V-band전역 이상의 주파수 대역폭을 갖고, 변환손실은 약 13∼18 ㏈ 정도이다.

• 복식문화연구
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• 제17권2호
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• pp.296-308
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• 2009

The purpose of this study is to comprehend the contemporary sports star fashion and to contemplate aesthetic characteristics of sports star fashion, thereby to establish the styles of sports star fashion. For such purposes, this study first examines aesthetic characteristics of sports fashion and star fashion based on previous studies, in order to analyze aesthetic characteristics of sports star fashion, and conducts a case study by analyzing photographic materials of fashion styles of well-known male sports stars such as the English soccer player David Beckham and American golf player Tiger Woods. The result of this study is as follows: the aesthetic characteristics of the contemporary sports star fashion are virility, functionality, sensuality and deconstruction. (1) Virility emphasizes manly features by displaying trained and disciplined body. (2) Functionality is expressed through structural simplicity and temperance of decoration. High-tech textiles and fibers are favored in order to fit in comfortable bodily movement for the heavy exercises. (3) Sensuality, as an expression of indulgence of sexual pleasure, is expressed through bodily exposure. Lastly, (4) deconstruction, which means destroying existed boundaries of cultural categories, is shown as co-existence of design elements from different times and places, stereotypes and sensibilities. Virility and functionality are prominent characteristics expressed in sports uniforms and training costumes. Sensuality and deconstruction are shown in daily fashion and formal dress outside the sports field.