• The Journal of the Petrological Society of Korea
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• v.13 no.1
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• pp.1-15
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• 2004

In this study we propose that the ‘enclaves’ which occur in the granites should be translated into ‘Po-yu-am’in Korean. Also we suggest some criteria to discriminate the mafic microgranular enclaves (MME) of igneous origin from the xenoliths, which possibly come from the plutonic, volcanic and sedimentary country rocks. The color of the MME is gray green∼dark gray and the mineral grains are fine and equigranular. The MME are generally of ellipsoidal shape and can be easily found within the granites. They do not show any evidence of contact metamorphism by granite host. On the other hand. the xenoliths are generally of angular shape and are of the same mineral assemblage and texture as the country rocks around the granites. The distribution of the xenoliths is mostly concentrated along the intruding plane of the granites near the country rocks. The xenoliths were partly metamorphosed by the granite intrusion. The xenoliths from the plutonic rocks are easily distinguished from the MME in terms of their angular shape and coarser grain size, but they do not have any metamorphic mineral assemblage and texture. The xenoliths from the tuffaceous rocks show angular shape and porphyritic and pyroclastic textures. Large size xenoliths from the sedimentary rocks specifically preserve bedding structure which are indicative of the sedimentary strata. However, the sedimentary xenoliths of small size are often difficult to distinguish from the MME. Metamorphic minerals and texture are a useful key to discriminate the small-sized sedimentary xenoliths from the MME. In summary the xenoliths in the granites can be megascopic ally distinguished from the MME by comparing their color, shape, grain size and remnant original structure like bedding. Additionally the metamorphic mineral assemblage and texture are microscopic discriminators between the xenoliths and the MME in the granites.

• FLOWER RESEARCH JOURNAL
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• v.16 no.4
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• pp.325-332
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• 2008

This paper outlines the system and operation of plant variety protection right and plant patent of ornamental crops in USA to guide for application of new varieties developed in Korea and to use for national examination of applied variety from USA. The Plant Variety Protection Act(PVPA) in USA is given as PVPR to the developers of new variety for the seed propagating crops and tubers and provides as plant patent for asexually reproducing crops. A certificate of PVPR and plant patent is awarded to an owner of a variety has shown that it is new, distinct from other varieties, genetically uniform and stable through successive generations by official evaluation without the growing trial. The term of protection for plant patent and PVPR for most crops is 20 years but 25 years for trees, shrubs, and vines. The application of ornamental variety in USA is mostly for plant patent. The application of ornamental crops accounted for 87% of total applications for plant patent. The ratio of new variety applications for plant patent from national and foreign countries is not significant differences.

• 건강소식
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• v.11 no.4 s.101
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• pp.29-31
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• 1987

아직도 농촌지역에는 기생충병이 만연되어 있음을 알 수 있고 더욱이 전국이 일일생활권에 있어, 농촌에서 재배한 채소류나 육류가 쉽게 도심지 시장에까지 직판되어 식품매개성 기생충분포에 관해서는 도시 농촌을 구별하기 어렵게된 실정이다.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 2017.04a
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• pp.174-174
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• 2017

농지의 구성물을 인식하는 기술은 농작업 기계를 로봇으로 전환하는데 필요한 기술 중 하나이다. 하지만 실외에서는 태양광과 날씨 변화에 따른 광 조건의 변화가 매우 커서 기존의 영상처리 방법으로 구성물을 인지하는데 한계가 있었다. 본 연구에서는 광 조건의 변화에 따른 영향을 줄이는 방안으로 IR 이미지를 이용한 농지 구성물의 인지를 수행하였다. 농지 구성물로는 토양, 식물, 멀칭비닐, 자갈을 선정하였다. 농지의 IR 이미지에서 농지 구성물을 구별하기 위한 픽셀값을 작게 적용하면 미세한 구분은 가능하지만 토양, 식물, 멀칭 비닐 등을 구성물 단위로 구별할 대는 후처리가 필요로 해지는 문제가 발생하였다. 본 연구에서는 IR 영상의 픽셀값을 평균 처리하여 농지 구성물의 인지를 수행 때의 효과를 확인 하였다. 평균 처리하는 픽셀값이 많을수록 처리속도가 빠르고, 작은 노이즈를 제어하는 효과가 있었지만, 픽셀값이 너무 커지면 구조물의 구별 정확도가 떨어졌다. 이 결과를 바탕으로 농지 구성물 인지를 위한 효율적인 IR 이미지 평균 처리 수준을 확인하였다.

• The Korean Journal of Applied Statistics
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• v.13 no.2
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• pp.275-286
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• 2000

After commencing the local self~governing system. it has been requested to make statistics about Si-Gun-Gu level. and the necessity of unemployment statistics in Si-GunGu area has also been proposed as the unemployment became a political issue and social problem due to an I:YIF situation Throughout this paper, therefore, we suggest two small area estimations that can produce the unemployment statistics of Si-Gun-Gu based on the Current Population Survey In addition, we estimate the unemployment number of Si-Gun-Gu in ChungBuk area from the real data of the Current Population Survey. Finally, It was also proved that the applicability of small area estimation was valid in comparison with efficiency of small area estimations.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.109-110
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• 2017

본 연구에서는 2016년 전 세계에 공포를 안겼던 지카 바이러스(Zika virus)와 최근 아열대성 기후의 확대로 인해 향후 대유행이 예상되는 뎅기 바이러스(Dengue virus)의 구별 진단 방법에 대해 논의하고자 한다. 두 바이러스는 모두 플라비바이러스 속(Flavivirus genus)에 해당되며, 동일한 단백질 도메인(domain)으로 구성되어 있다. 본 연구에서는 여러 도메인 중에서도 진단에 유리하다고 판단되는 비구조단백질 1(NS1, non-structural protein 1)을 선정하였으며, UniProt (Universal Protein Resource) 데이터베이스를 활용하여 지카 바이러스와 뎅기 바이러스의 비구조단백질 1의 아미노산 서열을 상호 비교 분석 하였다. 더 나아가 IEDB (Immune Epitope Database) 데이터베이스를 활용하여 비구조단백질 1의 아미노산 중, 진단에 용이한 에피토프로 예상되는 5개의 후보를 도출하였다. 최종적으로 후보군으로부터 지카 바이러스와 뎅기 바이러스를 구별하여 진단할 수 있다고 판단되는 에피토프(펩타이드)를 제안하였다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.27 no.11
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• pp.996-1003
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• 2016

Trilateration technique using time of arrival(TOA) is generally used for single target position estimation in radar system. However, trilateration technique has limitation in case of multiple targets, since it is difficult to distinguish the measurements corresponding to the respective targets. In this study, to eliminate ambiguity of relation between measurements and targets, micromotion of each target is measured by micro Doppler which is actively studied in radar industry nowadays and these information are used to distinguish measurements used at trilateration technique. Resultingly, the trilateration technique is applied successfully for each target. The targets are considered as multiple submissiles separated from the missile. Simulation results shows the performance of the proposed algorithm.

• Journal of the Korea Society of Computer and Information
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• v.16 no.1
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• pp.133-142
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• 2011

When TCP operates in multi-hop wireless networks, it suffers from severe performance degradation due to the different characteristics of wireless networks and wired networks. This is because TCP reacts to wireless packet losses by unnecessarily decreasing its sending rate assuming the losses as congestion losses. Although several loss differentiation algorithms (LDAs) have been proposed to avoid such performance degradation, their detection accuracies are not high as much as we expect. In addition the schemes have a tendency to sacrifice the detection accuracy of congestion losses while they improve the detection accuracy of wireless losses. In this paper, we suggest a new sender-based loss differentiation scheme which enhances the detection accuracy of wireless losses while minimizing the sacrifice of the detection accuracy of congestion losses. Our scheme estimates the rate of queue usage which is highly correlated with the congestion in the network path between a TCP sender and a receiver, and it distinguishes congestion losses from wireless losses by comparing the estimated queue usage with a certain threshold. In the extensive experiments based on a network simulator, QualNet, we measure and compare each detection accuracy of wireless losses and congestion losses, and evaluate the performance enhancement in each scheme. The results show that our scheme has the highest accuracy among the LDAs and it improves the most highly TCP performance in multi-hop wireless networks.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.594-596
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• 1998

지금까지 적합성운용시험이란 용어는 서로 다른 유형의 광의 적합성시험을 구별없이 일컫는 방법으로 사용되어왔으며, 상호운용시험이란 용어도 다양한 가능한 시험구조레 대하여 무차별적으로 사용되어왔다. 본 연구는 적합성시험을 접속적합성시험과 개체적합성시험으로 구분하여, 상호운용성시험구조의 시험능력이 달라짐에 따라 상호운용성시험이 이들 적합성시험과 어떻게 연결 지워질 수 있는지를 탐구한다.

• Journal of the Korean Society for information Management
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• v.14 no.1
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• pp.107-124
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• 1997

It is our main aim in this study to discriminate the conceptual relationship between homographic descriptors. The roles of qualifier and the problems of the recent usage of qualifier such as Hangul, Hanja and foreign languages, which is based largely on the dictionaries, subject heading lists and thesauri, re analyzed within the framework of the our test thesaurus developed as a macro-the-saurus. Finally, we proposed some new ideas must be integrated into the Hangul qualifier in order to make it generally applicable within the field of dictionary, and the method of representing, selection principles and priority of Hangul qualifiers.