레인지 파인더 시스템의 개발 및 3차원 물체의 형상특징 추출

조동욱,이성석 西原大學校 1991 西原大學 論文集 Vol.28 No.-

This paper proposes the range finder system for acquistion of the range data and the method of the representation of the 3-dimensional information using these range data. Developed range finder system can reduce the computation time compared to the existing methods by calculating only △R of each pixel. And we propose the method of extraction of shape feature informations of objects whether the acquired range data are sparse of dense. This method uses the fact that, analyzing the state of the curved surface, each primitive has special characteristics of sign values. Finally, the effectiveness of this system is demonstratd by several experiments.

Mossbauer 분광법에 의한 2605S3 Metglas의 배위수 및 국소자기장 분포

조익한,이상훈,강신규,양재석 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-

We analysed the Mossbauer spectra of ferromagnetic 2605S3 Metglas submitted to various tilt angles;it is concluded that the hyperfine parameters and their correlations depend on the state of the tilt angle. The fact that the mean coordination number is 10.03, the structure of this material is well defined by Bernal's DRPHS model. Also, methods based on linear combination of spectra can be used.

위너 필터링에 의한 초음파 C-스캔 영상개선

조성일,신진섭,전계석 慶熙大學校 1993 論文集 Vol.22 No.-

In this paper, image-processing method has been studied to improve the resolution of the solid-interior image by the Wiener Filtering. Although ultrasonic imaging systems are an effective and powerful tools for nondestructive testing, the c-scan image techniques are limited by blurring and distortions introduced by the resolution limits of the systems. Wiener filter technique has been discussed in this paper to enhance c-scan image in two-dimensional applications. Experimental results of coin samples have shown better ultrasonic images than images without Wiener filter processing.

척추 마취에서 소용량 Bupivacaine-Fentanyl 과 상용용량 Bupivacaine 의 비교

조영훈,이상곤,민병우,이지향,반종석 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.41 No.4

Comparison of Small Dose Bupivacaine-Fentanyl with Conventional Dose Bupivacaine during Spinal Anesthesia Young-Hoon Cho, M.D., Ji-Hyang Lee, M.D., Sang-Gon Lee, M.D. Jong-Suk Ban, M.D., and Byung-Woo Min, M.D. Department of Anesthesiology, Daegu Fatima Hospital, Daegu, Korea Background: Although spinal anesthesia has a lot of advantages, it has some disadvantages or undesirable effects. Hypotension and unnecessarily long neural blockade are included among them. Although using small dose local anesthetics fairly solves these problems, it is insufficient to provide reliable surgical anesthesia by itself. Therefore the authors investigated whether such an opioid as fentanyl and small dose local anesthetic used together during spinal anesthesia can prevent hypotension and unnecessarily long neural blockade and provide reliable surgical anesthesia simultaneously. Methods: Thirty patients undergoing knee or below knee surgery were randomized into two groups. Group 1 received bupivacaine 5 mg combined with fentanyl 20 ㎍, and group 2 receive 10 mg bupivacaine. Hypotension was recorded and was treated with intravenous ephedrine. Sensory blockade, intraoperative analgesia, motor blockade and side effects were assessed. Results: NO significant differences were observed in values for assessing hypotension, sensory block-ade or intraoperative analgesia between the two groups. Also no significant differences were observed in intensity of the motor blockade and side effects between the two groups. However the duration of the motor blockade of group 1 was longer significantly than that of group 2. Conclusions: Small dose bupivacaine and fentanyl administered together intrathecally reduced duration of motor blockade and didn't augment of side effects and provided reliable anesthesia for surgery of knee or below knee simultaneously. (Korean J Anesthesiol 2001; 41: 423~427)

야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

사업장근로자의 구강보건인식 및 실천에 관한 연구

조성숙,최미혜 중앙대학교 의과대학 간호학과 간호과학연구소 2001 중앙간호논문집 Vol.5 No.1

This study is to investigate the recognition of oral by workers in enterprising place and the degree of their care. The subject of investigation is 198workers at three companies in Kyunggi-Do. The duration to collect the survey takes from September 1 to September 30, 2000. The means for survey is to prove the reliability and property. For the method of analysis, it used frequency, percentage, average, standard deviation, t-test, ANOVA and Duncan's multiple comparison test. The conclusion is as followings. Firstly, regarding the general characteristics, men from all the subject, 198workers for this survey are 73.2%. Regarding ages, 20∼29years or less is 49%. 30∼39years or less is 33.8%. Regarding the school carrier, the graduate from high school is 40.9% and collage is 38.4%. Accordingly, the degree of school carrier was high. People who work for research is 34.8%. Regarding the degree of their economy, middle is 75.3%. Secondly, regarding the recognition of oral health, alveolitis prevention effect was high but decayed tooth effect was low. And the needs of dental surgery were low. Thirdly, reviewing the action of oral health, the recognition of necessity and importance of scaling was low. Most of the workers dont get scaling their teeth regularly. Although they recognized it is necessary to get regular oral examine for oral health, the grade to do actually was low. Fourthly, on the basis of general feature, considering the recognition of oral health, 20∼29years workers were got a high grade. Manufacturing workers was lower than official and technical service workers. In the aspect of the level of economy, middle class is higher than low(p<.05). Reviewing the action, women are higher than men. The more age and the level of economy, the more action become(p<.05).

Skin entrance dose for digital and film radiography in Korean dental schools

Cho, Eun-Sang,Choi, Kun-Ho,Kim, Min-Gyu,Lim, Hoi-Jeong,Yoon, Suk-Ja,,Kang, Byung-Cheol 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.4

Purpose : This study was aimed to compare skin entrance dose of digital radiography with that of film radiography and to show the dose reduction achievement with digital systems at 11 dental schools in Korea. Materials and Methods : Forty six intraoral radiographic systems in 11 dental schools were included in this study. Digital sensors were used in 33 systems and film was used in 13 systems. Researchers and the volunteer visited 11 dental schools in Korea. Researchers asked the radiologic technician (s) at each school to set the exposure parameters and aiming the x-ray tube for the periapical view of the mandibular molar of the volunteer. The skin entrance doses were measured at the same exposure parameters and distance by the technician for each system with a dosimeter (Multi-O-Meter : Unfors instruments, Billdal, Sweden). Results : The median dose was 491.2 μGy for digital radiography and 1,205.0 μGy for film radiography. The skin entrance dose digital radiography was significantly lower than that of film radiography (p<0.05). Conclusion : Fifty-nine percent skin entrance dose reduction with digital periapical radiography was achieved over the film radiography in Korean dental schools.

부식된 하수관에서 분리된 곰팡이 OMSOf1의 황화수소 제거 특성

조경숙,박상진 이화여자대학교 환경문제연구소 1997 이화환경연구 Vol.1 No.-

심하게 부식된 콘크리트 하수관으로부터 황산화 곰팡이, OMSOf1을 분리하였다. 분리한 곰팡이의 성장 특성, 포자 형성 방법 및 포자의 크기와 모양을 조사한 결과, Sporormia속에 속하는 것으로 사료되었다. 곰팡이 OMSOf1은 균체내의 황화물 산화효소계에 의해 H₂S와 같은 황화물을 thiosulfate로 산화하였다. 고흡수성 수지(sodium polyacrylic acid) 와 polyurethane을 혼합하여 만든 담체에 biofilter에 28ppm의 H₂S를 50ml/min의 유속으로 통기시킨 결과, 약 15일 동안은 외부로부터의 수분을 공급하지 않는 조건하에서도 거의 100%의 H₂S 제거효율이 저하되었을 때에는 담채에 수분을 공급해 줌으로써 황화수소의 제거효율이 회복되는 것으로 밝혀졌다. A sulfide-oxidizing fungus was isolated from corroded concrete sewer pipes. From the physiological and morphological properties such as growth characteristics on diverse media, reproduction pattern, and size and shape of spores, the isolated fungus was considered as Sporormia sp. The fungus OMSOf1 could oxidize hydrogen sulfide(H₂S)to thiosulfate due to intracellular enzyme systems. The fungus was immobilized in polyurethane carriers which contained super absorbent polymer(sodium polyacrylic acid) permeated with mineral medium, and polyurethane. When 28ppm of H₂S was supplied to the biofilter packed with the carriers at 50ml/min, more than 95% removal ratio of H₂S was obtained for 15 days without supply of water. The reduction of H₂S removal ratio by drying of the carriers could be recovered by supply of water.

표면곡률을 이용한 물체의 형상특징추출

조동욱,김지영,박웅규,윤상균,이성석,김태우 西原大學校 1992 西原大學 論文集 Vol.29 No.-

In this paper, a new shape feature extraction method of the objects using surface curvatures is described. First, the values of the H & K are calculated from range data as given input. Then objects are assigned in the form of 8 primitives by the signs of the H & K values. But existing methods have the difficulties with the complex object. Therefore, We propose the method for the complex primitives such as cone ridge and cone valley. Finally, the effectiveness of this paper is demonstrated by several experiment.

술후 Morphine과 Butorphanol의 지속적 정주 효과 비교

조상선,안정찬,이상근,한인숙,장사충 日新基督病院 1997 日新基督病院論文集 Vol.12 No.-