• Proceedings of the Korean Society for Information Management Conference
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• 2014.08a
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• pp.11-15
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• 2014

과학기술 학술활동은 원천기술 확보의 기반인 기초연구를 강화하기 위한 핵심요소이다. 논문과 학술지는 학술 커뮤니티에서 사전 연구기획과 사후 결과 활용의 핵심 수단으로써 중요한 기능을 담당하며 과학기술과 함께 발전해 왔다. 따라서 학술지 종수와 논문 발표 건수, 피인용 현황은 해당 주제 분야의 동향을 파악하는데 매우 중요하다. 이 연구에서는 최근 11년간 JCR 과학기술 주제분야(176개)별 논문 편수와 피인용도 증감 변화를 조사하여 새로운 주제분야(학문)의 생성과 성장가능성을 살펴 보았다.

• Journal of Agricultural Extension & Community Development
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• v.20 no.4
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• pp.839-869
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• 2013

Since opening the domestic food markets after late 1980s, Korean agro-food sector has been changed a lot, including commercialization of livestock and horticulture sectors. The large-scale periodic transactions appeared in food retail market in 1990's demand further commercialization of farm sectors. It require comprehensive on-farm knowledges including production, food processing, marketing, and management for agricultural sector. As the result, The Farming Systems Research & Extension concept has been introduced in 1992 as a form of The Regional Specialization Experiment Station. The Science and Technology Committee for Agriculture, Forestry, Fisheries, and Foods are established in 2009. However, we still find gaps between on-farm knowledge demands and supply, requiring further refining of R&D systems. It also asks to differentiate applied research from basic disciplinary research, better linkages between research and extension on farm, and comprehensive knowledge transfer systems. This study recommends for proper role allocation and cooperative structures for regional research and extension institutions to reduce overlaps among them. It further asks government to support regional research and extension systems including human resource and infrastructure building, to strengthen commodity based on-farm research and extension, and to separate budget allocation for regional research and extension. Provincial administration of the county level extension offices should also be considered for better linkage between research and extension at regional level.

• Journal of Astronomy and Space Sciences
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• v.26 no.4
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• pp.467-478
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• 2009

The super-geomagnetic storms called 2003 Halloween event globally occurred during the period of 29 through 31 which are the following days when the solar flares of X18 class exploded on 28 October 2003. The S4 index from GPS signal strength and the peak electron density ($NmF_2$) from GPS tomography method are analyzed according to the date. The occurrences of the cycle slip and scintillation in the GPS signals are 1,094 and 1,387 on 28 and 29 October, respectively and these values are higher than 604 and 897 on 30 and 31 October. These mean the ionospheric disturbances are not always generated by the period of geomagnetic storm. Therefore, GPS S4 index is useful to monitor the ionospheric disturbances. Behaviors of ionospheric electron density estimated from GPS tomography method are analyzed with the date. At UT = 18 hr, the maximum $NmF_2$ is shown on 28 October. It agrees with $NmF_2$ variation measured from Anyang ionosonde, and the GPS signal are better condition on 30 and 31 October than 28 October. In conclusion, GPS signal condition is relation with geomagnetic activities, and depend upon the variation of the electron density. We will study the long-term data to examine the relationship between the GPS signal quality and the electron density as the further works.

• Journal of the Korean association of regional geographers
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• v.12 no.2
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• pp.323-337
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• 2006

This thesis aims to study Change of the Land Use in Yanji city since the reformation and opening of China in the Connection with Urbanization Process. This study is based on Landsat image and maps and data related to topography, urban planning basic, the cadastral map were employed. Softwares such as Arcview3.3, ArcGis8.0 were used. The result of the research is as follows. It clearly appears that there have decreased in the ratio of agricultural areas since the increase in other urban usage of land. There has greatly increased in residential, commercial and industrial areas. Such as the capitalist and market economic city the highest point of city land price emerged in downtown of the old city center. In addition spatial pattern of land price is unusually quite different from the western city in its pattern of land price surface declining tendency between the highest land price and the lowest land price. The land price surface shows irregular patterns with increase of distance from downtown due to various urban developments. According to the land price distribution map, it is possible to guess spatial development of the city that the north-eastern part of Yanji was developed prior to south-western area. The center of the city, or downtown expanded to eastward, and the city expanded to south-westward out skirt. Along the main road, Xin-xing areas developed toward east and west ward.

• The Journal of the Korea institute of electronic communication sciences
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• v.1 no.1
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• pp.1-7
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• 2006

This study is focused on the developing of the telecommunication industry for the analysis on the social changes. We predict, the role increase greatly inpotant foundational society structure of coming twenty-one century. In the scope and method of this study there must invalve following five items: constructed global society, developing economic, limit resources, change personal behavior, security of living, This problem to find a solution to the change of telecommunication industry policy in Korea.

• Journal of the Institute of Convergence Signal Processing
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• v.5 no.4
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• pp.287-293
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• 2004

This paper proposes an efficient motion compensation algorithm for video sequences with brightness variations. In the proposed algorithm, the brightness variation parameters are estimated and local motions are compensated. To detect the frame with large brightness variations, we employ the frame classification based on the cross entropy between histograms of two successive frames, which can reduce the computational redundancy. Simulation results show that the proposed method yields a higher peak signal to noise ratio (PSNR) than that of the conventional methods, with a low computational load, when the video scene contains large brightness changes.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2010.04a
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• pp.207-208
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• 2010

• TTA Journal
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• s.134
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• pp.22-23
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• 2011

사사주간지 타임이 선정한 20세기에 가장 영향력 있는 사람으로 선정된 아인슈타인. 타임지가 쟁쟁한 정치인이나 연예인, 예술가 등을 제치고 아인슈타인을 선정한 것은 그가 발표한 상대성이론의 영향력이 그만큼 크기 때문이다. 이러한 상대성이론의 영향력은 종종 다윈의 진화론이나 코페르니쿠스의 지동설이 사회와 문화전반에 걸쳐 작용한 충격과 비교되기도 한다. 하지만 상대성이론이 몰고 온 의식의 변화는 사실 그 이상이었다. 그렇다면 상대성 이론이 무엇이 길래 그러한 변화를 몰고 온 것일까?

• Proceedings of the Korean Institute of Resources Recycling Conference
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• 2002.05a
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• pp.105-106
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• 2002

• The Magazine for Energy Service Companies
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• s.64
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• pp.32-35
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• 2010

정부는 2020년 온실가스 배출량을 전망치 대비 30%를 줄이는 감축 목표를 설정하였으며, 온실가스 감축의 초점이 산업에서 비산업 부문으로 옮겨감에 따라 지자체의 역할과 협력이 어느 때보다 중요해지고 있다. 이에 따라 각 공공기관에서는 기후변화 대응 방안을 수립해 그 중요성을 알리고 실천해 나가고 있는 것. 서울시와 광주시, 천안시, 경기도 4 곳의 사례를 소개한다.