• Proceedings of the KIPE Conference
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• 2020.08a
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• pp.324-325
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• 2020

계통 연계용 PCS(Power Conditioning System)에 적용되는 미국 인증 규격은 UL1741로써 PCS의 하드웨어 안정성과 소프트웨어의 기능 및 안정성을 요구한다. UL1741은 연계 규정으로 IEEE 1547.1을 요구하고 있으며, 본 논문에서는 소프트웨어 기능 및 안정성을 요구하는 UL1741SA 항목을 검증하기 위하여 데베소프트사의 SIRIUS 장비를 이용하여 효과적이고 정합성 있는 시뮬레이션 결과를 도출한다.

• Publications of The Korean Astronomical Society
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• v.30 no.2
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• pp.663-664
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• 2015

The activities of IRSF, a 1.4m infrared telescope operated under collaboration between Japan and South Africa, are presented briefly. The dedicated instrument, SIRIUS, which sits at the Cassegrain, has produced unique and prosperous science for 14 years. My talk involves; ${\circ}$ concept of construction and operation, ${\circ}$ publications and education, ${\circ}$ the successive upgrading of the instrument, and ${\circ}$ future plans.

• Journal of The Korean Astronomical Society
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• v.38 no.2
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• pp.173-174
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• 2005

On behalf of the IRSF/SIRIUS group, I introduce some recent results from our deep near-infrared surveys (J, Hand Ks bands, limiting magnitude of Ks=17) toward star forming regions in the Milky Way Galaxy (MWG) and Large Magellanic Cloud (LMC) with the near-infrared camera SIRIUS. We discovered a rich population of low-mass young stellar objects associated with the W3 and NGC 7538 regions in the MWG based on the near-infrared colors arid magnitudes. The high sensitivity of our survey enables us to detect intermediate-mass pre-main sequence stars, i.e. HAEBE stars, even in the LMC. We detected many HAEBE candidate stars in the N159/N160 complex star forming region in the LMC with the IRSF 1.4-m telescope. Spatial distributions of the young stellar objects indicate the sequential cluster formation in each star forming region in the complex and large scale (a few ${\times}$ 100 pc) sequential cluster formation over the entire complex.

• The Korean Journal of Malacology
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• v.17 no.1
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• pp.63-70
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• 2001

The distribution and seasonal changes of the intertidal macrobenthos community was performed on five intertidal rocky stations of Hwasoon at Jeju Islands September 1999 to August 2000. The macrobenthos was composed of six phyla, 13 classes, 24 orders, 49 families, and 97 species. The dominant species of the upper zones were Nodilittorina exigua, Notoacmea schrenckii, Liolophura japonica and Patelloida saccharina. Those of the middle zones were Monodonta labio, Chthamalus challengeri, Siphonalia japonica and Liolophura japonica. Those of the lower zones were Siphonalia sirius, Patelloida saccharina, Chthamalus challengeri, and Liolophura japonica. The community dominance indices of the upper zones were much higher than those of the middle and lower zones. Species diversity and evenness in all investigated zones were highest in station 1 and lowest in staton 3. But, species richness was highest in station 1 and lowest in station 4.

• Membrane Journal
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• v.5 no.4
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• pp.129-136
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• 1995

This study is concerned with the treatment of dye wastewater by carrier meditated emulsion liquid membrane. Optimum conditions for the removal of anionic dye and cationic dye by the emulsion liquid membrane(ELM) containing Aliquat 336 or D2EHPA were obtained in the batch operation, an actual dye wastewater was tested under these conditions. Dye reagents used were Sirius Red(Direct dye), Reactofix Supra Blue(Reactive dye), and Apollo Blue(Basic dye). The experimental variables were surfactant(Span 80) and carrier(Aliquat 336 or D2EHPA) concentration in the membrane phase, the counter ion($Na_2SO_4$) concentration in the internal phase and the amount of emulsion. Extraction equilibrium arrived within 5 minutes after starting reaction and more than 95% of dye ion could be removed. The carrier concentration in the membrane phase was the most crucial for the removal efficiency, but other variables effected to the reaction time more than the removal efficiency. The dye wastewater was treated under the optimum conditions in two steps. The absorbance at 550nm of wastewater was decreased 0.53 to below 0.03 after 10 minutes treatment.

• Cross-Cultural Studies
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• v.35
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• pp.185-214
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• 2014

This paper presents an investigation into the forms of master archer Huhdai Mergen from Mongolian mythology and his character through archery. In Mongolian mythology, master archer Huhdai Mergen is usually connected to the regulation of the sun, the moon, and the stars in Heaven and the creation of stars. Such a series of acts are conducted through archery, which used to be performed as an incantatory ritual to resolve a disaster in life, dispel an evil spirit, and pray for affluence as well as for hunting. In Mongolian mythology, Huhdai Mergen is a master archer and hunter that rises to Heaven while hunting a deer and becomes Sirius with the deer becoming Orion. The Mongolian have believed that the two constellations protect them since ancient times. While Orion is related to the deer totem, Huhdai Mergen or Sirius is related to the wolf totem faith. Huhdai Mergen takes too much pride in his archery skills and ends up causing damage to himself, which can be understood as a pattern of controlling the power of personified Huhdai Mergen through excessive natural force. He also has something to do with Polaris, which is regarded as the stake to bind his horse to by the Mongolian. They also believe that their ancestral gods reside in the horse stake or column. The stake is the residence of Huhdai Mergen protecting the Mongolian people, which reflects his aspect as an ancestral god. He is also depicted as the god of thunder and lightning born in a cow. The stones he throws and the arrows he shoots in Heaven are the embodiments of thunder and lightning. The Mongolian have understood lightning of dispelling an evil spirit and striking wicked things as the arrow of Huhdai Mergen. The god of thunder and lightning has the attributes of a fertility god such as eliminating bad devils and bringing affluence. Huhdai Mergen is also manifested as the creator to create the earth and the savior to save mankind. Such forms all derive from his archery skills.

• The Korean Journal of Malacology
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• v.12 no.2
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• pp.85-90
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• 1996

3종의 복족류(Rapana venosa, Reishia bronni, Anthosiphonaria sirius)와 1종의 다판류, Lepidosona(Lepidosona) coreanica에 대한 18S ribosomal DNA의 염기서열을 밝히고 이들을 이미 보고된 18종의 이매패류, 2종의 복족류 그리고 1종의 다판류의 염기서열과 비교분석하였다. 그 셜과 복족류는 V4 region에서 다른 연체동물과 구별되는 독특한 inseerted sequinces를 가지고 있었으며, V2 region에서 복족류(Prosobranchia와 Pulmonata)와 이매패류(Pteriomorphia 와Heteerodonta) 각각의 두 아강들이 서로 다른 특징적인 insertions 또는 deletions으로 구분되었다.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.688-690
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• 2005

본 논문에서는 비디오 프레임에서의 특징점 추출과 3D 객체의 점들간의 상대적인 좌표만을 사용하여 비디오에 가상객 체를 삽입 하는 방법 을 제안한다. 가상객체의 삽입 위치는 사용자가 대응관계를 지정하여 결정한다. 3D 객체의 비디오 삽입을 위한 투사행렬은 POSIT 알고리즘을 사용하여 계산한다. 가상 객체를 삽입 함에 있어 실객체가 가상객체를 가리는 현상을 해결하였다. 본 논문에서 제안한 방법은 특징점과 3D 객체의 점들 간의 상대적인 좌표만 준비된다면 각 비디오프레임의 카메라 행렬을 계산할 수 있고 가상객체의 가려짐을 고려하여 합성할 수 있다.

• Publications of The Korean Astronomical Society
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• v.27 no.4
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• pp.381-382
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• 2012

InfraRed Survey Facility (IRSF) is our facility for near-infrared (NIR) observation located at South African Astronomical Observatory. The NIR camera SIRIUS on the 1.4m telescope provides three $7.7^{\prime}{\times}7.7^{\prime}$ images in the J ($1.25{\mu}m$), H ($1.63{\mu}m$), and $K_S$ ($2.14{\mu}m$) bands simultaneously with a pixel scale of 0.45". IRSF has three unique capabilities, which are suitable for follow-up observations of AKARI-selected objects. Several synergistic studies with AKARI are in progress from stars to galaxies. We introduce advantages of the above unique capabilities of IRSF for further synergistic studies between AKARI and IRSF.

• 한국HCI학회:학술대회논문집
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• 2006.02a
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• pp.486-492
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• 2006

본 논문에서는 비디오에서의 특징점 추적을 통해 얻은 2D 좌표를 이용한 3D 구조를 추정하는 방법과 네 점 이상의 공통점을 이용한 융합 방법을 제안한다. 영상의 각 프레임에서 공통되는 특징점을 이용하여 형상을 추정한다. 영상의 각 프레임에 대한 특징점의 추적은 Lucas-Kanade 방법을 사용하였다. 3D 좌표 추정 방법으로 개선된 직교분해기법을 사용하였다. 개선된 직교분해기법에서는 3D 좌표를 복원함과 동시에 카메라의 위치와 방향을 계산할 수 있다. 복원된 부분 데이터들은 전체를 이루는 일부분이므로, 융합을 통해 완성된 모습을 만들 수 있다. 복원된 부분 데이터들의 서로 다른 좌표계를 기준 좌표계로 변환함으로써 융합할 수 있다. 융합은 카메라의 모션에 해당하는 카메라의 위치와 방향에 의존된다. 융합 과정은 모두 선형으로 평균 0.5초 이하의 수행 속도를 보이며 융합의 오차는 평균 0.1cm 이하의 오차를 보였다.