• 한국환경복원기술학회지
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• 제19권6호
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• pp.123-132
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• 2016

The study was to introduce the revegetation measures for the improvement of the landscape in October, 2012 on the slope; two and four years after the introduction, the slope was examined to see the status of the revegetation. The result is as follows. The result from examining the soil on the slope, the soil was Loamy sand; which infers that the soil is in a poor condition for improving the scenery. Examining the characteristics of the vegetation-base materials, the soil acidity was pH 6.4 to 6.7; and the soil hardness was 21 to 24mm (hardness quotient of soil), this can be considered a favourable condition, which has no effect on the growth and development of plants. When it comes to the discovery of the species in the area, Lotus corniculatus var., Silene armeria L., Papaver rhoeas, Trifolium pratense L. developed and grew in spring after two years. And in the summer, Lotus corniculatus var., Dianthus chinensis L., Cosmos bipinnatus, Coreopsis drummondii L., Trifolium pratense were founded. And there were Lotus corniculatus var., Dianthus chinensis L., Aster yomena, Coreopsis tinctoria, Trifolium pratense L. in the autumn. According to the examination conducting after four years, Lotus corniculatus var., Dianthus chinensis L., Silene armeria, Cosmos bipinnatus, Coreopsis drummondii L., Papaver rhoeas, Trifolium pratense L. were founded in the spring, and Lotus corniculatus var., Dianthus chinensis L., Cosmos bipinnatus, Coreopsis drummondii L., Trifolium pratense grew in the summer. Lotus corniculatus var., Dianthus chinensis L., Astragalus sinicus, Aster yomena, Coreopsis tinctoria, Trifolium pratense L. were discovered in the autumn. Among the exotic species founded in the area, were Festuca arundinacea, Lolium perenne, Festuca rubra. When it comes to the protection of vegetation and dominance, Lotus corniculatus var., Metaplexis japonica, Coreopsis drummondii L. are the dominant species among the spring plants; and Lotus corniculatus var., Trifolium repens L., Erigeron annuus (L.) Pers. were the dominant plants in the summer. In the autumn, Lotus corniculatus var., Coreopsis drummondii L., Poa pratensis appear to be the dominant plants. The colonies of Pinus densiflora and Castanea crenata var. were formed around the South Sejong IC. Part of the area is occupied by the colony of Alnus hirsuta Turcz. ex Rupr. In terms of shrub, there were Indigofera pseudo-tinctoria, Robinia pseudoacacia, and Rosa polyantha var. genuina NAKA. As ground cover plants, Sasa borealis, Rubus crataegifolius Bunge were founded.

• 천문학회보
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• 제41권1호
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• pp.54.1-54.1
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• 2016

Multi-wavelength variability is a staple of active galactic nuclei (AGN). Optical variability probes the nature of the central engine of AGN at smaller linear scales than conventional imaging and spectroscopic techniques. Previous studies have shown that optical variability is more prevalent at longer timescales and at shorter wavelengths. Intra-night variability can be explained through the damped random walk model but small samples and inhomogeneous data have made constraining this model hard. To understand the properties and physical mechanism of intra-night optical variability, we are performing the KMTNet Active Nuclei Variability Survey (KANVaS). Using KMTNet, we aim to study the intra-night variability of ~1000 AGN at a magnitude depth of ~19mag in R band over a total area of ${\sim}24deg^2$ on the sky. Test data in the COSMOS, XMM-LSS, and S82-2 fields was obtained over 4, 6, and 8 nights respectively during 2015, in B, V, R, and I bands. Each night was composed of 5-13 epoch with ~30 min cadence and 80-120 sec exposure times. As a pilot study, we analyzed data in the COSMOS field where we reach a magnitude depth of ~19.5 in R band (at S/N~100) with seeing varying between 1.5-2.0 arcsec. We used the Chandra-COSMOS catalog to identify 166 AGNs among 549 AGNs at B<23. We performed differential photometry between the selected AGN and nearby stars, achieving photometric uncertainty ~0.01mag. We employ various standard time-series analysis tools to identify variable AGN, including the chi-square test. Preliminarily results indicate that intra-night variability is found for ~17%, 17%, 8% and 7% of all X-ray selected AGN in the B, V, R, and I band, respectively. The majority of the identified variable AGN are classified as Type 1 AGN, with only a handful of Type 2 AGN showing evidence for variability. The work done so far confirms there are more variable AGN at shorter wavelengths and that intra-night variability most likely originates in the accretion disk of these objects. We will briefly discuss the quality of the data, challenges we encountered, solutions we employed for this work, and our updated future plans.

• 한국ITS학회 논문지
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• 제10권6호
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• pp.108-117
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• 2011

서울시는 2001년부터 실시간 신호제어시스템(COSMOS)를 운영하고 있으며, 도시부 신호교차로의 신호운영 자료인 포화도 및 대기길이의 산출을 위하여 검지기를 설치해 차량으로부터 기초자료를 습득하고 있다. 현재 가장 보편적으로 사용하는 것은 유도성 루프검지기로 도로의 노면에 매설하는 방식이라 유지 보수가 용이하지 않고 비용이 많이 드는 단점이 있다. 또한 대기길이의 산정시 검지기를 통과하는 차량의 속도만으로 계산해야하기 때문에 속도측정 오차 발생시에 대기길이의 값에 영향을 미치게 된다. 제안하는 알고리즘은 카메라, 센서 및 이미지처리 장치와 같은 추가적인 장치 없이, VANETs(Vehicular Ad-hoc Networks)의 차량 간의 통신을 이용하고 각 방향별 그룹을 설정하여 교차로에서 원활한 교통 흐름을 가능케 하는 실시간 교통신호 제어 시스템을 제안한다. 본 연구에서 제안한 알고리즘은 GLD(Green Light District) Simulator를 기반으로 단일교차로 모델에서 AJWT(Average Junction Waiting Time)와 TQL(Total Queue Length) 에 대해서 확인하였으며 그 결과를 무작위(Random) 제어방식 및 최상우선(Best first) 제어방식과 비교하여 더 나은 결과를 보였다. 향후 VANETs를 활용한 실시간 제어방법이 보편화 될 경우 무선 통신기술을 이용한 교차로의 교통제어기술을 제안한 본 연구는 그 활용가치가 높을 것으로 판단된다.

• 대순사상과 동아시아종교
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• 제1권2호
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• pp.41-59
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• 2022

Caodaism is a new religion from Vietnam which began in late 1925 and spread rapidly across the French colony of Indochina. With a broad syncretic aim, the new faith sought to revivify Vietnamese religious traditions whilst also incorporating religious, literary, and spiritist influences from France. Like Catholicism, Caodaism kept a strong focus on its monotheistic nature and today Caodaists are eager to label their religion a monotheism. It will be argued here, however, that the syncretic nature of this new faith complicates this claim to a significant degree. To make this argument, we will consider here the nature of God in Caodaism through two central texts from two important stages in the life of the religion. The first is the canonized Compilation of Divine Messages which collects a range of spirit messages from God and some other divine voices. These were received in the early years of the faith. The second is a collection of sermons from 1948/9 that takes Caodaist believers on a tour of heaven, and which is entitled The Divine Path to Eternal Life. It will be shown that in the first text, God speaks in the mode of a fully omnipotent and omniscient supreme being. In the second text, however, we are given a view of paradise that is much more akin to the court of a Jade Emperor within an East Asian milieu. In these realms, the personalities of other beings and redemptive mechanisms claim much of our attention, and seem to be a competing center of power to that of God. Furthermore, God's consort, the Divine Mother, takes on a range of sacred creative prerogatives that do something similar. Additionally, cadres of celestial administrators; buddhas, immortals, and saints help with the operation of a cosmos which spins on with guidance from its own laws. These laws form sacred mechanisms, such as cycles of reincarnation and judgement. These operate not in the purview of God, but as part of the very nature of the cosmos itself. In this context, the dualistic, polytheistic, and even automatic nature of Caodaism's cosmos will be considered in terms of the way in which they complicate this religion's monotheistic claims. To conclude, this article seeks to demonstrate the precise relevance of the term 'monotheism' for this religion.

• 정보와 통신
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• 제15권11호
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• pp.40-51
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• 1998

전세계적으로 통신선진국들을 중심으로 기존의 유무선과 위성통신까지 통합하게 되는 차세대이동통신 서비스인 IMT-2000 서비스를 개발하기 위한 관련 표준화 작업 및 연구개발을 활발히 진행하고 있다. 한국통신에서도 국내외 표준화 상황에 적극 대처하고 경쟁력있는 IMT-2000 관련 핵심기술 개발 및 기존의 이동통신 서비스와 차별화된 서비스 개발을 위해 COSMOS (Communication System for Mobile multimedia Services)라고 명명된 시험시스템을 개발하고 IMT-2000 응용서비스를 시연한 바 있다. 본 논문에서는 이 IMT-2000 시험시스템의 응용서비스 및 각 단위 시스템에 대한 구조와 기능에 대해서 기술한다.

• 천문학회보
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• 제33권1호
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• pp.84.1-84.1
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• 2008

• 한국통신학회:학술대회논문집
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• 한국통신학회 1986년도 추계학술발표회 논문집
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• pp.91-94
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• 1986

In this paper, a servo motor control IC for VTR is developed using standard cell library. All the cells are designed by single metal and the 3um design rule. A desinged circuit consists of circuits which generates a switching pulse and a control reference signal in VTR. The operation of VTR chip is verified by COSMOS simulator. Finally, layout is drawn by YOSELA.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 추계학술대회논문초록집
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• pp.313.2-313
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• 2002

본 논문은 현대자동차에서 개발중인 이중질량플라이휠(DMFW)의 구조적, 열적 특성을 FEM code를 사용하여 평가하였다. DMFW의 몇몇 단품들은 SAE와 RICARDO에서 제시하는 평가기준을 만족시키기 위해서 일부 수정되었으며, 새로운 DMFW 시스템을 개발하는데 있어서 FEM을 사용한 방법은 매우 유용함을 알 수 있다.

• 한국철도학회:학술대회논문집
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• 한국철도학회 1999년도 추계학술대회 논문집
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• pp.447-454
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• 1999

In this paper, a technique for the shape design and analysis of rail fastener is presented. KRRI's own 3 type fasteners are developed after due consideration for tile aspects of installation, maintenance, and cost of fastener. Numerical by using commercial FEM program COSMOS/Works are carried out to determine the optimal shape of fastener clip. Front tile manufactured models and numerical results, the developed fasteners show tile possibility to be commercialized. But in order to have their competitiveness on the markets, further studies are required for the demonstration of performance through laboratory and field tests

• 한국정보처리학회논문지
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• 제1권2호
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• pp.194-201
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• 1994

최근 소프트웨어 적용분야가 확대됨에 따라 소프트웨어가 차지하는 비중이 점차 높아지고 개발 비용에 대한 중요성이 증대되고 있다. 그러나 종래의 개발비용 평가 모델은 주로 소프트웨어의 기능면에서 평가한것이 대부분 이었다. 본 논문에서는 소 프트웨어의 가치를 기능면 뿐만 아니라 품질면에서도 평가할 수 있는 소프트웨어 개 발비용 평가모델 COSMOS-Q(COSt MOdel for Subcontract-Quality)를 제안한다. 제안 모델의 목적은 소프트웨어 발주자가 발주 명세 정보만을 기본으로 정확한 소프트웨어 의 비용을 견적으로 할 수 있도록 하는 것이다. 특히, 본 연구에서는 ISO/SC7의 소프 트웨어 품질특성에 관한 검토 결과를 참고로 비용에 변동을 부여한 품질특성 요인의 추출 및 발주조건으로 지정가능한 각 요인의 평가척도를 설정하여 품질을 고려한 비 용 평가 모델을 제안하고 그 타당성을 평가하였다.