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韓泰元,韓澤善 고려대학교 의과대학 1979 고려대 의대 잡지 Vol.16 No.1
This study was carried out to measure the crown size and to determine the root resorption type of the deciduous teeth in Korean. The author collected 1862 of natural shedding crowns which were consisted of 1015(male;530, female;485) in upper and of 847 (male;429, female;418) in lower. And following results were obtained : 1. The averge crown sizes in mm. were as follows: Name of deciduous tooth crown / Mesiodistai diameter / Buccolingual diameter / Vertical length Upper central incisor 6.62 4.88 5.30 Upper lateral incisor 5.51 4.87 3.33 Cpper canine 6.62 5.57 5.81 Upper first molar 7.44 8.69 3.69 Upper second molar 9.34 9.78 6.03 Lower central incisor 4.29 3.80 4.30 Lower lateral incisor 4.77 4.16 3.23 Lower canine 5.97 5.35 6.33 Lower second molar 10.25 8.94 6.02 2. The average crown size and the root resorption type of the deciduous in right and left or in both sexes were similar. 3. In the view of physiological root resorption type of the deciduous teeth, the central incisor was repsorption mainly to the lingual side than to other sides, in the lateral incisor and canine, the lingual resorption type was decrease; gradually and a considerable number of mesio-lingual resorption type was appeared accompanied by a large number of horizontal resorption type, and most of the posterior teeth had horizontal resorption type. And such resorption tendency was remarkable in mandibular teeth.
한태원,김선정 한국지식정보기술학회 2010 한국지식정보기술학회 논문지 Vol.5 No.1
There are so many 3D objects in a database but it is not easy to search an object based on its feature or manage it. If the shape of an object is simple, it is not problem to detect features because it is easy to decide standard for mesh segmentation. However, if the shape is complex, it is a big problem. This paper proposes the efficient algorithm for mesh segmentation of 3D objects. We make one-thickness boundary lines based on Gaussian curvature and concaveness, and then segment a mesh using merging small regions to extract exact features. One-thickness boundary lines help us find exact division lines to detect precise features. By applying our algorithm, we could success to segment regions in various models which have a lot of curved faces.
한태원,이정인,허예림,유주민,최원철 한국감성과학회 2021 춘계학술대회 Vol.2021 No.-
We envision a travel proposal service based on a 'user-oriented analysis', which is a deficiency component of existing structured supervised applications. In addition, for the gradual development of proposed satisfaction, we also add an easy-to-use user data synchronization system. Through this, we try to overcome the paradigm of 'minimum time path'.