교통제어 시스템에서 최적 지역제어를 위한 Local Controller 개발에 관한 연구

元南植 慶一大學校 1993 論文集 Vol.9 No.1

In this paper, the new method of optimum control and improvement for the development of advanced local controller in the traffic control systems have been proposed as follows. ·Advanced actuation operation ·Traffic volume data collection and analysis ·Local traffic volume analysis in the sub-area and traffic parameter control function that is offset, split, cycle, speed. ·Time base coordination function ·Time of day function ·Traffic load distribution function ·Variable lane disply control function

불 전파 방식에 의한 특징 추출 알고리즘

원남식,남인길 대구대학교 산업기술연구소 1994 産業技術硏究 Vol.13 No.-

During these days, many algorithms for data compression by thinning have been devised and applied to great variety of patterns for different purposes. This wide range of applications shows the usefulness of reducing patterns to thin-line representations, which can be attributed to the need to process a reduced amount of data as well as to the fact that shape analysis can be more easily made on line-like patterns. In this paper, New algorithm for the Feature Extraction by Fire Front's Propagation is proposed. The key principle of this algorithm for the thinning pre-process is to realize parallelism on the Fire Front's Propagation.

연령이 증가함에 따른 흰쥐 망막의 막대세포, 원뿔세포 및 바깥얼기층의 미세구조 변화

고정식,한종원,양남길,안의태 대한해부학회 1992 Anatomy & Cell Biology Vol.25 No.3

Token Passsing에 의한 세선화 Algorithem에 관한 연구 Ⅱ

元南植 慶一大學校 1987 論文集 Vol.3 No.1

A thinning algorithm by token passing represented in this Paper has more improved contents than a study I of a thinning algorithm. As using a thinning algorithm by token passing, processing speed can be more increased any other thinning algorithm. Also it's very suitable algorithm for the recognition of the Korean character that is composed almost stroke feature because this algorithm has very excellent lineation characteristic.

세선화를 위한 4 근접 연결값에 의한 알고리즘

원남식,남인길 대구대학교 산업기술연구소 1994 産業技術硏究 Vol.13 No.-

Feature extraction generated by thinning algorithms, are often used to represent objects in a binary digital image for shape analysis and classification. Many thinning algorithms have been proposed to date. They differ from each other because of the many definitions of digital skeletons and the failure to utilize available analytical tools in their design and performance evaluations. In this paper, New algorithm for the thinning is proposed. The key principle of the algorithm is to process object pixel by the 4 Neighbors Connectivity Value.

세선화된 결과와 종횡비를 이용한 한글과 영어의 구별

元南植,全日秀,李修美 慶一大學校 1997 論文集 Vol.14 No.2

This paper proposes a distinction algorithm of Korean and English characters which can be applied to multi-font from the results of thinning and aspect ratio. The proposed algorithm distinguishes Korean and English characters as the number of connected components. If it can not distinguish those characters with the number of connected components, it distinguishes them as the vowel included in Korean characters and aspect ration of the character image. In experimental results, the distinction rate is about 99.82% for the 2.350 characters of three widely used fonts.

8-이웃 연결값을 이용한 細線化 알고리즘에서의 骨格消滅現狀 除去

元南植 慶一大學校 1997 論文集 Vol.14 No.2

This paper is the study about the skeleton disappearance phenomena in the WPTA available for the recognition of various characters. The WPTA can extract the skeleton of a character almost similar to the original pattern by using the connection value representing connectivity of each pixel. In this paper we show that the skeleton disappearance phenomena exists in the WPTA and propose an modified algorithm(WPTA8N) which can eliminate it in the WPTA. The thinning results of the proposed algorithm show that the skeleton disappearance phenomena is eliminated and the quality of extracted skeleton are excellent.

악교정 수술후 골격성 Ⅲ급 부정교합 환자의 하악운동 변화에 관한 연구

남동석,양원식,서정훈,장영일 대한치과교정학회 1997 대한치과교정학회지 Vol.27 No.2

본 연구는 골격성 III급 부정교합 환자에서 악교정 수술 전후의 하악운동 양상을 관찰하여 수술에 의한 하악운동의 변화를 평가하기 위하여 시행되었다. 서울대학교병원 교정과에서 골격성 III급 부정교합으로 진단받고 수술 전 교정치료를 받은 후, 동 병원 악안면구강외과에서 악교정 수술을 시행한 20명(남;9명, 여;11명)을 대상으로 수술 직전과 수술 2-7개월 후에 Sirognathograph와 BioPak EGN을 이용하여 최대 개폐구 운동과 시상면, 전두면, 수평면에서의 하악한계운동을 기록하고 21개의 항목을 계측하여 다음과 같은 결과를 얻었다. 1. 수술 후에 가장 큰 변화를 보인 항목은 시상면상 전방 운동각도로서, 수술 전 17.4°에서 수술 후 38.8°로 증가하였다. 또한 전치 유도가 형성됨에 따라 전방운동 궤적도 일직선에서 상악 절치의 형태에 따른 곡선으로 변하였다. 2. 수술 전후를 비교할 때 p<0.01 수준에서 유의성을 보인 항목들은 최대 개폐구 운동시 최대 개구량과 최대 전후방 운동량, 시상면상 최대 개구량, 전두면상 좌측방 운동각도의 4항목이었다. 3. 수술 전후를 비교할 때 p<0.05 수준에서 유의성을 보인 항목들은 전두면상 최대 좌우 운동폭, 수평면상 최대 우측방 운동거리, 최대 좌측방 운동각의 3항목이었다. 4. 최대 개폐구 운동시 최대 개구량과 최대 전후방 운동량은 수술 후 측정시간에 따른 차이를 보였다(p<0.05). 즉 2, 3개월군에서보다 5, 6, 7개월군에서 더 많은 운동량 회복을 나타내었다. 5. 수술 전 불규칙하던 개폐구시 운동 궤적은 수술 후 개구로와 폐구로가 일치하며 부드러운 곡선을 이루었는데, 이는 악교정 수술에 의해 교합장애가 제거되었기 때문인 것으로 생각된다. The purpose of this study was to evaluate changes in mandibular movement patterns after orthognathic surgery in skeletal Class III patients. The sample consisted of 20 Class III malocclusion patients(9 males, 11 females). Just before and after(2-7months) surgery, maximum opening & closing movement, mandibular border movement on sagittal, frontal and horizontal planes were recorded using Sirognathograph & BioPak EGN. On each record, 21 items were measured and statistically analyzed. The results were as follows: 1. Angle of protrusive movement on sagittal plane showed greatest change after surgery. Also, as the incisal guidance was established by surgery, straight path of protrusive movement became curved line. 2. Maximum opening distance and maximum antero-posterior distance on maximum opening & closing movement, maximum opening distance on sagittal plane, angle of left lateral excursion on frontal plane were statistically significant after surgery(p<0.01). 3. Maximum width of lateral excursion on frontal plane, distane of right lateral excursion and angle of maximum left lateral excursion on horizontal plane were statistically significant after surgery(p<0.05). 4. Maximum opening distance and maximum antero-posterior distance on maximum opening % closing movement showed significant differences according to post-surgical time(p<0.05). More recovery of range of movement occured in 5-7month group than in 2-3month group. 5. As the occlusal interferences were removed by orthognathic surgery, irregular opening & closing path became smooth curve.

설포메틸화법에 의한 無公害 傳統韓紙의 제조에 관한 연구

趙南奭,閔斗植,崔泰鎬,李載源 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.10 No.2

This study was performed to investigate the pollution-free papermaking characteristics from paper mulberry by sulfomethylation pulping. Bast fibers were pulped by sulfomethylated cooking liquor and by alkali and alkali-peroxied processes for the comparison. Sulfomethylated pulping resulted in the superior pulp with high yield and better quality compared to those of alkali and alkali- peroxide pulps. Since the pulp was so bright, there was almost no need additional bleaching. Polluttant loads of sulfomethylated pulping effluent were very low in terms of pH, turbidity and color compared to those of alkali. Pollution-free effluents was accomplished by simple filtering treatment with pine bark, charred rice hull and sawdust compost. Pine bark was the most effective in reduction rate of pollutants. Key words : Korean traditional paper, Paper mulberry, Alkali-Peroxide, Sulfomethylated pulping, Effluent.

Simulated resin root canal에서 엔진 구동형 Ni-Ti 파일로 근관성형 후 Buchanan plugger의 근관 내 삽입깊이에 대한 비교 연구

박연식,김동준,황윤찬,황인남,오원만 大韓齒科保存學會 2006 Restorative Dentistry & Endodontics Vol.31 No.2

본 연구는 레진 블록에서 엔진구동형 Ni-Ti 기구를 이용하여 근관성형 후 Buchanan plugger의 삽입 깊이에 대한 비교를 통해 임상적 상황에서 Ni-Ti 파일로 근관 성형 후 Continuous wave of condensation technique을 이용한 근관 충전시 적절한 크기의 Buchanan plugger 선택에 지침을 제공하기 위해 시행되었다. 만곡근관과 직선근관을 가진 레진 블록에서 ProTaper와 ProFile을 이용하여 근관 성형을 하였다. 성형 후 근관에 Buchanan plugger 가 근관벽과 처음으로 접촉하는 부위까지 삽입한 후 그 상태에서 스태너를 이용하여 이미지를 얻었다. 이미지 분석 프로그램을 이용해 근첨에서 plugger 첨부까지의 거리를 얻었다. 각 기구에 대한 plugger 삽입깊이에 대한 유의성을 검정하기 위해 one-way ANOVA를 시행하였고, 사후검정을 위해 Scheffe's test를 시행하였다. 본 연구의 결과 만곡되고 좁읍 근관에서, ProTaper F2와 F3로 마무리 성형한 근관에서 F. FM 크기의 plugger를 사용할 경우 Continuous wave of condensation technique으로 적절한 근관충전이 가능함을 시사하였다. This study was conducted to evaluate the insertion depth of Buchanan plugger after shaping by various Ni-Ti rotary files. It was conducted to determine which size of plugger are appropriate, when root canals are shaped with Ni-Ti rotary files and obturated by Continuous wave of condensation technique. Two type of eighty simulated resin blocks were used : J-shaped and straight shaped canal. The simulated canals were instrumented by ProTaper and ProFile. Buchanan pluggers were inserted into the canal, and then the image was recorded to scanner. The distance from the apex of the canal to the plugger tip was measured by image analysis program. Data were analyzed by one-way ANOVA followed by Scheffe's test. The results were as follows 1. In straight canal finished up to ProTaper F2 and F3 file, F and FM pluggers were inserted more than 5 ㎜ short of working length. 2. In J-shaped canal finished up to ProTaper F2 file, F pluggers were inserted more than 5 ㎜ short of working length. Finished up to ProTaper F3 file, F and FM pluggers were inserted more than 5 ㎜ short of working length. 3. In straight and J-shaped canal finished up to ProFile . 06/#20 and ,06/#25, any of Buchanan plugger could not be inserted more than 5 ㎜ short of working lenghth. These results suggest that canals shaped by ProTaper could be obturated by Continuous wave of condensation technique with F and FM size Buchanan plugger.