• Proceedings of the Korean Information Science Society Conference
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• 2003.04c
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• pp.642-644
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• 2003

본 연구에서는 LAN 기반 환경에서 반물입 혹은 몰입형 가상현실 장비의 대표적인 형태인 수평형, 수직형, 정방형 시스템들을 연동하여 복합 공유가상환경을 구축하였다. 또한 간단한 인터랙션을 포함하는 어플리케이션을 개발하여 공유가상환경 내에 위치한 사용자가 서로 다른 형태의 인터랙션 장비를 이용하여 가상객체와 실시간 상호작용 할 수 있도록 하고, 그 결과를 가상환경 내에 있는 사용자가 공유할 수 있도록 하였다. 기존의 연구가 동기종간의 공유가상환경을 구축하거나 이기종간의 단방향 인터랙션을 지원하는데 비해 본 논문에서는 다기종간의 공유가상환경 구축 및 실시간 상호인터랙션 방법을 제안하고 있다.

• Proceedings of the Korean Aquaculture Society Conference
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• 2004.05a
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• pp.178-179
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• 2004

• Journal of Korean Society of Forest Science
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• v.106 no.2
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• pp.169-185
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• 2017

The result of forest vegetation classification could be quite different and dependant on analysis methods. The purpose of this study was to compare the analyzed results for three kinds of methods (physiognomy dominant species, floristic composition and interspecific association) related to vegetation classification. Vegetation data were collected by the 80 quadrates in Mt. Oseo, Chungcheongnam-do from September to October in 2016. We carried out community type classification using above three methods. As a result, the vegetation according to physiognomy dominant species was classified into ten communities such as Pinus densiflora community, Quercus mongolica community, Zelkova serrata community, Quercus acutissima community, Cornus controversa community, Quercus serrata community, Larix kaempferi community, Pinus rigida community, Castanea crenata community and Liriodendron tulipifera community. The vegetation according to floristic composition was classified into 4 vegetation units. It was totally represented by Lindera erythrocarpa community group. And L. erythrocarpa community group was classified into the Rhododendron mucronulatum community (subdivided R. mucronulatum typical group and Styrax obassia group) and Zelkova serrata community (subdivided Larix kaempferi group and Pseudostellaria palibiniana group). As a result of interspecific association, forest vegetation was divided into two groups. And it was considered that the vegetation type by floristic composition and interspecific association significant could be affected by topography. There were lots of vegetation groups or units in the order like 10 types of communities by the physiognomy dominant species, 8 species group and 4 vegetation types by the floristic composition, and 2 types by the interspecific association. In conclusion, vegetation classification methods elicited diverse vegetation groups or units with lots of correlations of environmental factors.

• Korean Journal of Microbiology
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• v.30 no.1
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• pp.47-52
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• 1992

This study describes isolation and identification of a soil bacterium which is degradable of phosphinothricin and improvement of the isolated strain by using mutagenesis and spheroplast fusion. The experiment was performed to search for a possibility of development of a new strain which is both PPT-degradable and glyphosate-resistant by using interspecies cell fusion between the PPT-degrading bacterium. Pseudornonu.\ puucimohlis and a glyphosate -resistant strain, Pseudornonu.~ cc,pucicl. Auxotrophic mutants were obtained by the treatement of P. puucimohili.\ with ethylmethanosulfate, and used to cell fusion. Lysozyme and EDTA were used to spheroplast formation and regeneration rates :)f the spheroplast were 6.5'%1 in P. pauc.irnohili.\ and 8.8% in P.ci,j~u[,i(lr, espctively. Polyethylenglycol 5.000 was used to cell fusion as fusogen. The fusant\ulcorner F1. F2. F\ulcorner and F4 werc- obtained by the intra- and interspecies cell fusion. The fusant Fl of intraspecies cell fusion was higher to the wild type by 1 I'%l in PPT degrading ability, and the fusant F3 of inierspesis cell fusion developed plyphosatc-resistant and PPI-dcgrading ability which were propertics of two parental strains.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.10a
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• pp.305-306
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• 2001

수온은 개체들의 활성도와 분포를 제한하는 직접적인 요인이며, 에너지 수지에 포함되는 섭이 활동, 대사작용과 성장들을 포함한 대부분의 생리학적 과정들에 영향을 미친다(Fry, 1971). 적온 범위에 대한 변통은 종간 뿐만 아니라 종내에서도 크다. 그러므로 특정한 조건하에 생태적으로나 상업적으로 가치가 있는 종들에 대한 성장 실험(Scope for growth)은 필요하며, SFG는 넓은 범위의 환경상태에 대해서 민감하고, 정량적이며 통합적인 스트레스에 대한 반응을 제공한다. (중략)

• Korean Journal of Plant Resources
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• v.32 no.4
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• pp.296-302
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• 2019

This study was accomplished to select breeding materials among the pear germplasm 6 species 43 accessions and check out the expression of scab incidence of inter specific hybrids of 5 crosses 609 seedlings for scab resistance breeding. Fruitlets scab incidence of P. pyrifolia, P. bretschneideri and P. ussuriensis were 59.5, 73.4 and 63.0% respectively, and also fruitlets scab incidence of interspecific hybrid cultivars between P. pyrifolia and P. bretschneideri were 77.7%. However, fruitlets scab incidence of P. communis and interspecific hybrid accessions between P. pyrifolia and P. communis were significantly less than 15%. As a result of the Duncan test, scab resistance of pear accessions were classified into two groups: P. communis and their hybrid were resistance and P. bretschneideri, P. pyrifolia, P. ussuriensis, and among their hybrid were susceptible. Also, it showed the same trend in the seedlings. Scab incidence of 'Seolwon' ${\times}$ 'Chuwhangbae' and 'Supergold' ${\times}$ 'Mantienhong' in P. pyrifolia seedlings showed more than 80%, while that of interspecific hybrid between P. pyrifolia and P. communis showed about 2%. It showed scab resistance of P. communis transferred to hybrid seedlings and expressed to be dominant in their seedlings. Namely, P. communis was good breeding materials for scab resistance.

• The Korean Journal of Zoology
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• v.35 no.3
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• pp.339-343
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• 1992

버들치, 버들개의 공서지역에서 2종 사이의 종문제를 명확히 구명하기 위해 883개체를 채집하여 형태형 질과 유전자분석을 실시하여 생식적 격 리기작 여부를 조사한 결과는 다음과 같다. 2종 사이 에 잡종개체가 약 12%( n = 104) 발견되었다. 형 태분류형 질인 측선상부린수( SAL)의 경우 버들개와 버들치가 각각 SAL = 24.25$\pm$1, 32, 16.93 $\pm$ 0.92로 뚜렷한 차이를 나타내었으나 잡종개체는 평균 SAL = 19.56$\pm$1.80으로 중간값을 나타내었다. 잡종개체 중 F2 이상의 잡종개체 비율은 약 2.7%로 Fl(9"yp)에 비해 현저히 낮고, 잡종개체의 출현률이 기 대치보다 낮은 것으로 보아(P < 0.001) 2종간에 자유교배가 되지 않으며 따라서 Predating isolating mechanism이 작용한다고 보며 또한 잡종개체의 치사율이 높은 점으로 보아 이들사이에는 Postdating isolating mechanism도 동시에 작용한다고 사료되며 따라서 이들 2종은 비교적 최근에 분화된 별종임이 재확인 되었다. 되었다.

• Annual Conference of KIPS
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• 2009.11a
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• pp.167-168
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• 2009

CPS는 소프트웨어 시스템에 의해 제어되는 물리적인 디바이스들의 결합으로 엄격한 실시간 및 물리적인 자원의 제약속에서 작업을 수행한다. CPS가 다양한 분야에 응용되기 때문에 이기종 CPS 간의 통합문제도 종종 일어나게 된다. 본 논문에서는 이기종 CPS들의 상호작용을 위해 상호운용성이 높은 웹서비스 기법을 도입한다. 제안기법은 CPS 디바이스를 서비스로 추상화하여 상호운용성을 높이는 방식을 적용하였으며, CPS 디바이스를 지원하기 위해 기존 웹서비스 구조에 서비스 브로커를 추가한다. 제안기법의 서비스 브로커는 CPS 디바이스와의 의미론적 상호 운용성뿐만 아니라 수집된 정보 통합 및 서비스 합성과 디바이스 관리를 수행한다.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.19 no.4
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• pp.232-242
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• 2014

We investigated the interspecific competition between the harmful dinoflagellate Cochlodinium polykrikoides and diatom Skeletonema sp. based on the utilization and uptake of dissolved organic nutrients. C. polykrikoides and S. costatum were able to grow using dissolved organic nitrogen (DON) and dissolved organic phosphorus (DOP) as well as dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphorus (DIP). This result indicates that the utilization of dissolved organic nutrients may play a role in surviving strategy in the DIN or DIP-limited environments. The half-saturation constants (Ks) of urea and glycerophosphate (glycero-P) calculated from uptake kinetics experiment of C. polykrikoides was lower than those of Skeletonema sp. This result indicates that Skeletonema sp. have higher affinity for dissolved organic nutrients, such as urea and glycero-P, than C. polykrikoides. Although Skeletonema sp. have higher affinity of dissolved organic nutrients, C. polykrikoides could effectively uptake for urea and glycero-P at sub-saturating nutrient concentrations (${\alpha}$ (${\rho}_{max}/Ks$) of C. polykrikoides was higher than Skeletonema sp.. Therefore, C. polykrikoides by utilization and effectively uptake of dissolved organic nutrients under monoculture may have an advantageous position in the interspecific competition with Skeletonema sp. in the low nutrient environments.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.30 no.2
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• pp.131-139
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• 1985

Breeders have concerned with the nature of gene action controlling the duration of grain filling period to combine early maturity and acceptable grain yield to fit wheat into multiple cropping systems. The 4 x 4 complete diallel set of F$_1$, F$_2$ and 1/2 (BC$_1$ + BC$_2$) in crosses of winter and spring wheat cultivars was made to determine the nature of gene action involved for duration of grain filling period. Using the Jinks-Hayman model, no maternal effects were noted nor were any non-allelic interactions observed for total duration of grain filling and lag period. The actual grain filling period was influenced to some degree by such interactions. The spring cultivars Red Bobs and Siete Cerros also appeared to have more dominant genes for longer total duration of grain filling and lag period. In contrast, the winter parents Yamhill and Hyslop had more dominant genes for the longer actual grain filling period. The genes appeared to be independently distributed among the parents.