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방향성을 고려한 텍스처 합성을 학습하기 위한 인공신경망
추연희(Yeon Hee Choo),김종현(Jong-Hyun Kim) 한국컴퓨터정보학회 2024 한국컴퓨터정보학회 학술발표논문집 Vol.32 No.1
본 논문에서는 텍스처 합성을 할 때 CNN을 사용하여 효율성을 높이고 방향을 고려하여 동적인 결과로 품질을 개선시킬 수 있는 방법을 제안한다. 자유로운 회전 각도로 방향성을 고려하여 동적인 결과물을 생성할 수 있도록 하였으며, 기존 접근법인 사각형 형태의 마스크 블록이 아닌 다양한 회전 각도를 고려하여 학습을 했기 때문에 텍스처 합성 과정에서 방향성 특징을 좀 더 잘 표현할 수 있다.
선원에서 X선 방어용 칸막이간 거리가 상이한 유방촬영실의 공간 산란선량 비교
진미경(Mi Kyeong Jin),추연희(Yeon Hee Choo),손순룡(Soon Lyong Son),하동윤(Dong Yoon Ha) 대한영상의학기술학회 2010 대한영상의학기술학회 논문지 Vol.2010 No.-
Purpose : Recently, there has been an increasing interest in average glandular dose(AGD) of breast in digital mammo-radiography and it has been reported. Otherwise, there is no study on exposure dose of operators. Thus, we suggest that it set a defensive divider at standard distance and its method to reduce exposure dose of operators. Materials and Methods : Equipment resignations senography DS(GE co.) and dosimeter is model 2026c survey meter (radical co.), ACR mammmo phantom, the thick control to use did with acryl plates. The test room especially the phantom thickness and Target/Filter, changed and is measured from three points of defensive divider the scattered dose who compared Results : 1. When fixing Target/Filter, 62mm phantom scattered dose was highly measured double degree. 2. Target/Filter at the time of Mo/Mo the scattered dose was most highly measured from the same thickness. 3. On the identical condition which is to be measured the scattered dose that Mio projection of 3 or more times are higher CC projection and, defensive divider internal point the scattered dose was measured. Conclusion : As the result, until defensive divider is possible above of 136cm does shortest distance from x-ray source. Moreover It is consider that To make an curve distance from X-ray tube to defensive divider is effective than to make a straigt line distance. And In this case, thick breast and plastic breast, it’s required to make an effort to reduce dose and dose which is change from target/filter.
이지희(Lee Ji-Hee),추연희(Choo Yeon-Hee) 대한건축학회 2011 대한건축학회논문집 Vol.27 No.8
It is told that disaster is learnt from disaster. In this aspect, the first approach to disaster today is to analyze the patterns and sizes of fire by building up the database for disasters occurred in the past. In order to preserve our cultural property buildings from fire, this study built up the fire chronological table of the Choson Dynasty period based on the annals of the Choson Dynasty and analyzed its fire cases like below. (1) According to the annals of the Choson Dynasty, the total number of fire in the Choson Dynasty period was 375 cases while there was a periodic relation between fire occurrence number and periodic dynasty. In other words, the fire occurrence frequency was shown to be high when the domestic situation was chaotic like Japanese Invasion of Korea in 1592 or the Manchu war of 1636. (2) The season with high fire occurrence frequency was spring. Those fires might be caused by accidents or negligence in the period of beginning farm work, which was different from the current electronic fire that occurs frequently usually in winter time. (3) The fire occurrence frequency for different places was private house(174 cases, 46%), government office(94 cases, 25%), palace(62 cases, 17%), royal tomb(32 cases, 9%) and natural fire(13 cases, 3%) in order. (4) As there were 32 cases which was recorded with the number of the dead, the fire which killed more than 25 people was two cases. It was shown that 55 cases of fire were less than 100 burnt houses while the number of massive fire which burnt more than 500 households was 12 cases.