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정밀도로지도와 1:1,000 수치지형도의 상호 연계 방안 연구
서동철,최윤수,이원종,박찬익 대한공간정보학회 2024 대한공간정보학회지 Vol.32 No.1
본 연구에서는 2022년 1:1,000 수치지형도의 정확도 기준이 수평·수직 ±30cm로 상향됨에 따라 기존보다 더 정확한 수치지형도를 이용하여 정밀도로지도의 구축과 갱신이 가능한지 알아보고자 하였다. 이를 위해 정밀도로지도와 수치지형도의 동일한 지점 33곳에 대해 위치정확도를 비교·분석하고 각 레이어의 상호호환 가능성을 분석하였다. 위치정확도 검증 결과 모두 품질검사 기준을 만족하였으며 레이어별 매칭을 통해 수치지도를 활용하여 구축 및 갱신할 수 있는 정밀도로지도 레이어를 도출하였다. 총 14개의 정밀도로지도 레이어 중 ‘차도 구간’, ‘주차면’, ‘차량 방호 안전시설’ 레이어가 수치지도를 통해 구축 및 갱신할 수 있는 것으로 나타났으며 ‘부속구간’, ‘노면선표시’, 그리고 ‘노면표시 레이어’도 일부분 가능한 것으로 나타났다. 이처럼 수치지형도와 정밀도로지도 간 제작 목적이 다르기 때문에 구축 레이어가 달라 완벽한 호환은 불가능하지만 일부 레이어에 대한 호환은 가능하며 수치지형도의 갱신 주기를 고려하였을 때 경제적 또는 효율적인 정밀도로지도의 부분적인 갱신이 이루어질 수 있을 것으로 판단하였다. In this study, as the accuracy standard for 1:1,000 digital topographic maps is raised to ±30cm horizontally and vertically in 2022, we sought to determine whether it is possible to construct and update high-precision road maps using the enhanced version of digital topographic maps. For this purpose, we compared and analyzed the location accuracy of 33 identical points on the high-precision road map and the digital topographic map, and analyzed the interoperability of each layer. The location accuracy verification results all satisfied the quality inspection standards. Through layer-by-layer matching, a high-precision map layers that can be constructed and updated using a digital map were derived. Among the 14 precision road map layers, the 'roadway section', 'parking surface', and 'vehicle protection and safety facility' layers were found to be able to be built and updated using digital topographic maps. 'Accessory section' and 'road line marking', and ‘road marking’ layers were found to be partially interoperable. As the development purpose of each map differs, complete compatibility of all layers is not possible. However, some layers were found out to be compatible. This, considering the considering the update cycle of digital topographic maps, implies that a more economically and technically efficient partial renewal of high-precision road maps could be accomplished.
서동철,Suh, Dong-Chul 대한소아신장학회 2008 Childhood kidney diseases Vol.12 No.1
Telomeres consist of tandem guanine-thymine(G-T) repeats in most eukaryotic chromosomes. Human telomeres are predominantly linear, double stranded DNA as they ended in 30-200 nucleotides(bases,b) 3'-overhangs. In DNA replication, removal of the terminal RNA primer from the lagging strand results in a 3'-overhang of uncopied DNA. This is because of bidirectional DNA replication and specificity of unidirectional DNA polymerase. After the replication, parental and daughter DNA strands have unequal lengths due to a combination of the end-replication problem and end-processing events. The gradual chromosome shortening is observed in most somatic cells and eventually leads to cellular senescence. Telomere shortening could be a molecular clock that signals the replicative senescence. The shortening of telomeric ends of human chromosomes, leading to sudden growth arrest, triggers DNA instability as biological switches. In addition, telomere dysfunction may cause chronic allograft nephropathy or kidney cancers. The renal cell carcinoma(RCC) in women may be less aggressive and have less genomic instability than in man. Younger patients with telomere dysfunction are at a higher risk for RCC than older patients. Thus, telomeres maintain the integrity of the genome and are involved in cellular aging and cancer. By studying the telomeric DNA, we may characterize the genetic determinants in diseases and discover the tools in molecular medicine.