동작 인식을 위한 영상 프레임 에지 추출

안성수,민혜란,이정기,이준 동신대학교 2005 論文集 Vol.15 No.-

기존의 산업현장에서 적용되고 있는 동작인식 시스템의 취약점, 문제점을 보 완하기 위하여 작업자의 동작을 고정된 CCTV 로 촬영한 영상을 인식의 대상으로 취함으로써 동작 정보를 얻기 위한 각종 장비들을 최소화 시켰다. 본 연구에서는 작업자의 일정한 동작을 보다 효율적으로 인식할 수 있는 시스템을 제안 한다. 먼저, 작업자의 동작을 촬영한 동영상에서 연속된 프레임간의 차를 기반으로, 고정된 배경과 움직이는 대상을 분리한다. 에지 검출을 이용하여 동작의 중심 위치를 추정하여 연속적으로 움직이는 동작을 인식할 수 있도록 하였다. 본 연구에서 설계한 동작 인식시스템은 작업자의 신체 부분별 특성을 추출하기 위한 계산작업에 소요되는 시간을 줄이기 위하여 프레임간의 차연산과 에지검출을 통한 동작인식을 실시하여 인식에 필요한 작업시간을 단축하여, 효율적이면서 비용이 저렴한 동작 인식시스템을 설계하였다.

과전류 보호계전기용 광섬유 전류센서

송민호,양창순,안성준,박병석,이병호 한국비파괴검사학회 2001 한국비파괴검사학회지 Vol.21 No.5

과전류 보호계전기에 사용할 목적으로 광섬유를 센서헤드로 사용하는 광 전류센서를 구성하였다. 전류측정의 원리는 도체 주변에 감겨진 광섬유 코일을 따라 광신호의 선형편광축이 자기장에 의하여 회전하는 정도를 측정하여 이로부터 전류의 값을 산출하는 편광측정 방법이 사용되었다. 센서코일은 10/125 mm 규격의 일반 통신용 광섬유를 미터당 20회전 이상 비틀어 제작하여 온도나진동 등의 환경적 영향을 최소화하였다. 코일의 한쪽 끝은 Faraday Rotator Mirror를 장착한 반사형으로 설계하여 계통을 해체하지 않은 상태에서도 센서의 탈×부착이 가능하고 코일의 회전수에 따라 센서의 민감도 조절이 용이하며 폐회로형 구조이므로 인근 신호원에 의한 간섭을 차단할 수 있다. 편광 빛가르개 등을 이용한 광학 신호처리부를 구성하고 표준 전류원을 이용한 전류측정 실험을 수행한 결과로 이론적인 해석과 동일한 형태의 출력을 얻을 수 있었다. 본 논문에서는 구성한 광 전류센서의 이론적 모델을 기술하고 전류측정 실험의 결과와 이론치에 대하여 비교 분석한다. A robust, accurate, broad-band, alternating current sensor using fiber-optics is being developed as a part of optical over current protection relay system. The sensor uses the Faraday effect in optical fiber and polarimetric measurements to sense electrical current. The current sensing coil consists of a length of twisted optical fiber and Faraday rotator mirror to suppress the linear birefringence effect. Due to its single-ended closed path structure, it can not only be easily installed to the target with great isolation from other fields in the vicinity, but the sensitivity can be increased by using multiple turns. This paper reports on the theoretical backgrounds of the sensor design and the preliminary experimental results.

웃음을 이용한 다중음성치료기법(SKMVTT<SUP>®</SUP>)이 성대용종 환자의 음성개선에 미치는 효과

김성태(Seong-Tae Kim),정옥란(Ok-Ran Jeong),안철민(Cheol Min Ahn) 한국음성학회 2008 음성과학 Vol.15 No.2

Vocal polyp is one of the representative chronic diseases of vocal folds, and it can be cured by voice therapy and/or laryngeal microsurgery. However, the existing therapeutic methods about vocal polyp are in great demand. The purpose of this study was to evaluate the effect of vocal improvement between laryngeal microsurgery and SKMVTT<SUP>®</SUP>(Seong-Tae Kim's Multiple Voice Therapy Technique), which was designed by the author. We identified 37 patients, who were diagnosed with unilateral vocal polyp, aged from 21 to 62 years(mean age: 46 years). 21 patients were treated by the SKMVTT<SUP>®</SUP> and the other 16 patients were only treated by the laryngeal microsurgery. All patients who were treated by the SKMVTT<SUP>®</SUP>, received 12 sessions of treatment, and were evaluated before therapy and after finishing the 12th session. The patients who were treated by laryngeal microsurgery, were evaluated prior to and at least 8 weeks after surgery. The results showed that the SKMVTT<SUP>®</SUP> produced better results compared to the laryngeal microsurgery alone. The SKMVTT<SUP>®</SUP> produced better results, especially, at the initial stage of voice therapy compared with those of laryngeal microsurgery. In this study, we can suggest that SKMVTT<SUP>®</SUP> may be useful in improving the voice qualities of vocal polyp patients. However, more data should be collected and evaluated to be widely used in other clinics.

뇌실내출혈로 인한 급성 수두증에서 관찰된 해리증후군

김광기,이경민,이정주,오종배,안태범,정상욱,남현우,박성호 대한신경과학회 1999 대한신경과학회지 Vol.17 No.5

두개내에 발생한 형질세포육아종 (Plasma Cell Granloma) 2예

천대웅,주성민,김후원,김병기,안병철,오건세,양기화 대한신경과학회 1999 대한신경과학회지 Vol.17 No.3

법랑모세포 분화와 성숙과정에서 OD314의 발현

박주철,안성민,김흥중,정문진,박민주,신인철,손호현 大韓齒科保存學會 2005 Restorative Dentistry & Endodontics Vol.30 No.5

법랑모세포는 법랑질을 형성하고 유지하는 세포로, 법랑질의 유기기질을 분비하고 법랑질 석회화 과정에도 관여한다. 치아 발생과정에서 법랑모세포의 분화는 순차적인 상피-간엽 상호작용에 의하여 조절되나, 분화나 성숙과정의 정확한 기전은 아직까지 잘 알려져 있지 않다. 최근에 상아모세포에서 처음 발견된 OD314가 치아 발생과정에서 상아질을 형성하는 상아모세포 뿐 아니라 법랑모세포에도 발현된다고 하였다. 이에 본 연구에서는 생쥐 하악 전치의 다양한 시기의 법랑모세포를 이용하여, 형태학적 분석과 in-situ hybridization에 의한 OD314 mRNA의 발현 그리고 OD314 항체를 이용한 면역조직화학적 분석을 통하여 OD314 유전자의 법랑 모세포 분화와 성숙과정에서의 역할을 연구하여 다음과 같은 결과를 얻었다. 1. 형태학적으로 법랑모세포는 분화 단계에 따라 분비 전단계 법랑모세포, 분비기 법랑모세포, 성숙기의 평탄끝 법랑모세포와 성숙기의 주름끝 법랑모세포로 구분되었다. 2. OD314 mRNA는 분비기의 법랑모세포에서부터 발현되기 시작하여 법랑모세포가 성숙해갈 수록 그 발현이 증가하였다. 3. OD314 단백질은 분비 전단계의 법랑모세포에서는 발현되지 않고, 분비기의 법랑모세포에서는 세포질에 전체적으로 발현되었다. 성숙기의 평탄끝 법랑모세포와 주름끝 법랑모세포에서는 세포의 근심과 원심끝단에 OD314 단백질이 강하게 발현되었다. 이상의 결과를 종합하여 OD314는 법랑모세포의 분화와 성숙과정에서 세포질 내부에서 특징적인 역할을 하는 것으로 사료된다. Ameloblasts are responsible for the formation and maintenance of enamel which is an epithelially derived protective covering for teeth. Ameloblast differentiation is controlled by sequential epithelial-mesenchymal interactions. However, little is known about the differentiation and maturation mechanisms. OD314 was firstly identifled from odontoblasts by subtraction between odontoblast/pulp cells and osteoblast/dental papilla cells, even though OD314 protein was also expressed in ameloblast during tooth formation. In this study, to better understand the biologcal function of OD314 during amelogenesis, we examined expression of the OD314 mRNA and protein in various stages of ameloblast differentiation using in-situ hybridization and immunohistochemistry. The results were as follows : 1. The ameloblast showed 4 main morphological and functional stages referred to as the presecretory, secretory, smooth-ended, and ruffle-ended. 2. ○D314 mRNA was expressed in secretory ameloblast and increased according to the maturation of the cells. 3. OD314 protein was not expressed in presecretory ameloblast but expressed in secretory ameloblast and maturative ameloblast. OD314 protein was distributed in entire cytoplasm of secretory ameloblast. However, OD314 was localized at the proxiamal and distal portion of the cytoplasm of smooth- ended and ruffle-ended ameloblast. These results suggest that ○D314 may play important roles in the ameloblast differentiation and maturation.

유기질비료 시비량에 따른 오미자 묘목의 초기 생육특성에 관한 연구

이경아,박태호,박성용,김도현,오문국,김민수,안태진,이상원,김영국,안영섭,박충범,차선우,송범헌 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.1

This study was carried out to have basic and applied informations to find the optimum nitrogen fertilization level for organic cultivation and to investigate early growth characteristics of Schizandra chinensis Baillon. Different application levels of the organic fertilizer were based on the recommended rate of N fertilizer. Five different levels of the organic fertilizer were applied to S. chinensis and early growth responses such as the length of vine, the diameter of vine, the number of leaves, and the number of branches were investigated. Lengths of main and total vines were shown longer at the level of 1.0 time organic fertilizer than those at others. The vine length at early growth was the highest at the level of 1.0 time organic fertilizer among the treatments. Stem diameter was shown thicker level of 1.0 time organic fertilizer than others on August and September, whereas on October it was the thickest in the conventional cultivation. Number of leaf was increased higher at the level of 1.0 and 2.0 times organic fertilizer than that in the compared to conventional. The number of branches was appeared the lowest at the level of 1.0 time organic fertilizer at early growth, however they were increased through progressing their growth stages. They were not significantly difference among the treatments except for the level of 2.0 times organic fertilizer. Based on the research results, the growth of S. chinensis was commonly higher at the level of 1.0 time organic fertilizer compared to other treatments.

한국사람 손바닥문의 생김새

이제만,정민석,정호근,이경종,신동훈,안미선,김도윤,이민석,정구영,정연무,조한범,유상준,박성식 아주대학교 1997 아주의학 Vol.2 No.2

Palm prints have been used for personal identification because they are unique to each individual. Palm prints have also been used for diagnosing genetic disorders and for revealing physical anthropological characteristics, due to their specific appearance characteristic of genetic factors and nationality. Therefore, several analytical methods of palm prints have been developed and applied for the purpose described. However, in the previous reports, the analytical methods of palm prints and the numbers of subjects were insufficient to find Standard values for Korean palm prints. In this study, in order to determine the Standard value for Korean palm prints, we examined palm prints of 3216 Korean adults (2095 males and 1121 females), analyzed the data according to sex and side of hand, and compared with those of foreigners. The results are s follows: 1) The incidence of 7, 9, and 11 of D was 41.8%, 33.5%, and 20.4%, respectively. Comparing the incidences 017, 9, and 11 of D in Koreans with those of foreigners, the Korean belong to the Asians including the Japanese, the Chinese, and the Philippine, however, the Korean was doser to the Blacks and distant from the Whites than the other Asians. 2) The palm prints were classified into the open type in which B terminates at the ulnar border of hand, and the dosed type in which B does not. Open type, 7-5-5 (male 37.6%, female 39.5%) and 9-7-5 (male 23.9%, female 25.5%), was more frequent in female than in male, while dosed type, 11-9-7 (male 9.8%, female 9.1%), was more frequent in male than in female. Also, open type, 7-5-5 (right 28.9%, left 47.6%), was more frequent in left hand than in right hand, while dosed type, 11-9-7 (right 17.1%, left 2.1%), was more frequent in right hand than in left hand. Consequently, open type was more frequent in the weak hand, whereas dosed type was more frequent in strong hand. 3) Because a-b (39.2) and c-d (35.0) were more numerous than b-c (27.8), distance between a and b and between c and d were longer than that between c and d. The long distance of a, b and c, d could be resulted by wide moving range of second finger and fifth finger, respectively. Also, there was a tendency that the palmar ridge counts of right hand was more numerous than those of left hand, which could be resulted by wide moving range of right fingers in the right-handed persons who were more frequent than the left-handed persons. 4) O, in which there was no triradius, and X, in which dermal ridge from a triradius was blocked and terminated at the other dermal ridge, were frequent in C (O 7.8%, × 7.2%) than in D (O 0.1%, × 0.1%) or in B (O 0.4%, X 1.2%). The frequency of 0 and X in C was thought to be related with the location of ein the narrow space between d and b. The narrow space between d and b was known because c-d and b-c was less numerous than a-b. 5) The distances between adjacent triradii were longer in male than in female, however, the palmar ridge counts for a-b, b-c, and c-d were less numerous in male than in female. Consequently, dermal ridges were thought to be thicker in male than in female. The Standard values of Korean palm prints obtained from this study are expected to be used for both diagnosing genetic disorders and for revealing physical anthropological characteristics in Korea. Further studies to clarify the relationship between the palm prints and the power of hand as well as the moving range of fingers are in need.

금 카벤 착체합성 및 특성에 관한 연구

정민철,정혜성,김성민,이정훈,박권필,안호근 한국공업화학회 2005 응용화학 Vol.9 No.1

We have been used for the Pt catalyst of cathode electrode in fuel cell. Weak point of Pt electrode are easily deactivated by the CO poisoning which are producing in reaction at electrode. Recent, researchers have developed cathode electrode to avoid the CO poisoning in electrode using the Pt-alloy or another novel metal. We now report Au-carbene complexes as an Au-electrode precursor derived from the reaction of the carbene with the ClAu(PPh₃) complex in THF/MeOH.

TIMP - 2 Overexpression by Retrovirus Effectively Inhibits Invasive Phenotype : A Gene Therapy Approach

Ahn, Seong Min,Sohn, Yeo Won,Kim, Yun Soo,Moon, ARee 서울시립대학교 산업기술연구소 2001 산업기술연구소논문집 Vol.9 No.2