HISIM모형의 개발에 관한 연구

李仁遠,朴魯峰,朴鍾日 弘益大學校 科學技術硏究所 2005 科學技術硏究論文集 Vol.16 No.-

The development in the information technology area has enabled drivers to use the ATIS (Advanced Traveller Information System) more easily by establishing ubiquitous environment where users may access the network at any place and time. The ATIS is the central part of the ITS (Intelligent Transportation System). The travel time of a transportation network at rush hours, however, has been calculated based on a simple proportional function between the traffic volume and travel time. This simplified method has been adopted in the trip assignment model for technical reasons resulting in the actual traffic flow at rush hours not being properly reflected. Therefore, it has fundamental limits in terms of the ever changing traffic conditions and short term prediction. In addition, the static trip assignment, which is mainly used in the trip assignment of traffic flow, does not allow any time-dependent changes. Under this assumption, the static trip assignment may predict relatively long-term average traffic flow, but cannot describe such characteristics as changing in a time-dependent manner. This assumption also supposes that the traffic flow has a uniform distribution in the applied area, which is regarded as another flaw of the static assignment method. As a result, various dynamic methods analyzing traffic conditions of a transportation network have been recently developed. Against this background, the objectives of this study are as follows: To develop HISIM (Hong Ik SIMulation) model, apply the travel time calculation formula developed based on the previous BPR formula and Queueing theory to this model, and present values and limits of each model by simulating in the imaginary network and comparatively analyzing its results.

The Characteristics and Safety of Previous Fillers in Secondary Rhinoplasty

Bong Il Rho,Seok Min Yoon,Eun Soo Park,위서영 대한미용성형외과학회 2018 Archives of Aesthetic Plastic Surgery Vol.24 No.2

Background Filler injection into the soft tissue of the nose is a useful technique for rhinoplasty. The individual characteristics of fillers determine which is best suited for a patient’s specific circumstances. The objective of this study was to identify the characteristics of various fillers and to determine which fillers should be used for primary rhinoplasty in order to yield optimal long-term results. Methods Excluding patients treated with hyaluronic acid fillers, we reviewed 17 patients who underwent surgical rhinoplasty due to dissatisfaction with an injection using a different filler. After removing the previously injected filler, rhinoplasty was performed as part of the same procedure using a silicone or Surgiform® prosthesis. Results Various previous fillers were used in the cohort. During the process of filler removal, skin perforation occurred in 2 cases and infection was observed in 1 case. In the other cases, rhinoplasty using a prosthesis was performed at the time of filler removal and no complications were observed. Conclusions We found that if surrounding tissue had been maintained stably, a simultaneous secondary operation using implants produced ideal results in most cases without any complications, despite the presence of residual remnant filler material.

Visible Perforating Lateral Osteotomy: Internal Perforating Technique with Wide Periosteal Dissection

Rho, Bong Il,Lee, In Ho,Park, Eun Soo Korean Society of Plastic and Reconstructive Surge 2016 Archives of Plastic Surgery Vol.43 No.1

There are two general categories of lateral osteotomy techniques-the external perforating method and the internal continuous method. Regardless of which technique is used, procedural effectiveness is hampered by limited visualization in the surgical field. Considering this point, we devised a new technique that involves using a wide subperiosteal dissection and internal perforation under direct visualization. Using an intranasal approach, whereby the visibility of the intended fracture line was maintained, enabled a greater degree of control, and in turn, results that were more precise, and thus predictable and reproducible. Traditionally, it has been taken as dogma that the periosteum must be preserved, considering the potential for dead space and bony instability; however, under sufficient visualization of the surgical field with an internal perforating method, complete osteotomy with fully preserved intranasal mucosa could be conducted exactly as intended. This intact mucosal lining compensates for the elevated periosteum. Compressive dressing and drainage through a Silastic angio-needle catheter enabled the elimination of dead space. Therefore, precise, reproducible, and predictable osteotomy minimizing the potential for associated complications such as ecchymosis, that is, bruising owing to hemorrhage, could be performed. In this article, we introduce a novel technique for lateral osteotomy with improved visualization.

외래에서의 소아 뇌파 검사를 위한 Chloral hydrate의 전정요법 : 진정요법 증진을 위한 교육의 수면 효과

노영일,김은영,양은석,문경래,박영봉 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Purpose : Pediatric sedation in the EEG laboratory permits to record with less muscle and movement artifact. For sedation, it is important to reduce the use of drug and make patients to promote sleeping. The aim of this study is to determine the effect and safety of chloral hydrate and to determine the effect after education of measure to promote sleeping. Methods : The study included 150 outpatients (98 males, 52 females) to administer sedation to pediatric outpatients who were undergoing EEG studies between January 2001 and July 2003. Before sedation, we educated for patients (66) to promote sleeping. We reviewed types of sedation administered, dosage, time until sedated, and any complications. We compared the sedation effect with education and handicapped children. Results : Chloral hydrate sedation was successful in 94.7%. First and second sedation were successful in 74.0% (111/150), 91.2% (31/34) respectively. Sedation with and without education was successful in 83.3%, 66.7% in first sedation (P=0.016), 77.8%, 96.0% in second sedation respectively. Time until sedated with education was significantly short (P=0.001). The success rate decreased steadily for children more than 37 months old. The success rate in handicapped children was significantly lower than in health children (P=0.012). Complications to chloral hydrate sedation included vomiting, irritability and deep sedation. But, no complications was severe enough to require to hospitalization. Conclusions : Chloral hydrate sedation to pediatric outpatients who were undergoing EEG studies was effective and safe. The education of the promotion of sleeping results in increasing the rate of success and reducing the time until sedated. 목적 : 소아에서 뇌파 검사시 진정요법은 근육이나 움직임 등에 의한 인공산물을 줄여 기록할 수 있도록 해준다. 그러나 진정요법을 위하여 약물의 사용을 줄이고 쉽게 유도되도록 하는 것이 중요하다. 이에 저자들은 chloral hydrate의 효과와 안전성을 알아보고, 진정요법 증진을 위한 사전 교육에 대한 진정요법의 효과를 알아보고자 하였다. 방법 : 2001년 1월부터 2003년 7월까지 조선대학교 부속병원 소아과 외래에 뇌파 검사를 위해 방문한 환자 중 수면이 필요한 150명(남자 98명, 여자 52명)을 대상으로 하였다. 진정요법 전에 교육을 제공하지 못한 84명을 대조군으로 하였고, 미리 진정요법 증진을 위한 교육을 제공한 66명을 교육군으로 하였다. 수면은 chloral hydrate 50mg/kg 복용, 진정요법이 성공하지 못했을 때 chloral hydrate 25 mg/kg 복용시켰고 그 후에도 진정요법이 성공하지 못했을 때 midazolam (0.1 mg/kg) 를 혈관내 주입하거나 ketamine (2 mg/kg) 를 근육내 주사 하였다. Chloral hydrate의 1차 진정요법 효과와 2차 진정요법 효과를 비교하고,진정요법 증진을 위한 방법을 사전에 교육한 군과 대조군의 진정요법 성공률과 성공사간을 비교 분석하였다. 발달 장애, 뇌기형, 뇌성마비와 정신지체의 장애군(29명)과 정상 소아(121명)에서 진정요법 효과를 비교 분석하였다. 결과 : chloral hydrate의 진정요법 성공률은 94.7% 이었고, chloral hydrate 1,2차 진정요법 성공률은 각각 74.0% (111/150), 91.2% (31/34) 이었다. Chloral hydrate 1차 진정요법 성공률은 대조군과 교육군 각각 66.7%, 83.3%이었고(P=0.016), 2차 진정요법 성공률은 각각 96.0%, 77.8%이었다. Chloral hydrate의 진정요법 성공 시간은 교육을 제공한 군에서 의미 있게 짧았다.(P=0.001). 나이에 따른 진정요법 성공률은 37개월 이후에 감소하였다. 장애군에서 진정요법 성공률 정상아에 비해 의미 있게 낮았으며(P=0.012), 성공 시간은 길었다. 다른 진정요법 약물을 사용한 경우는 4명으로 교육 전 3명, 교육 후 1명이었고, 장애군은 3명 정상 소아는 1명이었다. 과다 수면, 구토와 흥분과 같은 합병증은 3명에서 있었으나 입원할 정도로는 아니었고 곧 회복되어 퇴원하였다. 결론 : 외래에서 소아 진정요법시 chloral hydrate는 효과가 우수하며 안전한 약물이며, 수면 증진을 위한 교육은 진정요법 성공률을 높이고 진정요법 시간도 줄일 수 있을 것으로 생각된다.

전방접근법을 이용한 보존적 이하선 적출술

노봉일,이영만,양순재,탁민성 大韓成形外科學會 1997 Archives of Plastic Surgery Vol.24 No.2

The principle of surgery of the parotid gland is adequate removal of the tumor with functional and anatomical preservation of all branches of the facial nerve. There are two main surgical approaches to superficial or total conservative parotidectomy : Anterior approach and posterior approach. Preliminary identification of the main trunk of the facial nerve is probably the most favoured techniques, but identification of the peripheral branches of the facial nerve, with subsequent proximal dissection to the main trunk, is long established but less popular technique. We have prospectively experienced the low incidence of facial nerve damage in series of 55 conservative parotidentomies performed using the anterior approach. The techniques employed is described with a report of results obtained in the belief that this approach warrants greater popularity and safe technique.

초등학생 입학 후 발생한 두통의 유병률과 임상적 특성

노영일,김은영,양은석,문경래,박상기,박영봉 朝鮮大學校 附設 醫學硏究所 2003 The Medical Journal of Chosun University Vol.28 No.2

Purpose : The purpose of the study was to determine prevalence and clinical features of the occurrence of childhood headache after the start of elementary school. Method : The survey was performed by a special questionnaire on 552 children in grade 1 (195 children) and grade 6 (357 children) at the three elementary schools from 1 to 31 August, 2002 in Gwangju city. We have analyzed the prevalence and the clinical features of headache of them. Result: The prevalence of headache in grade 6(49.0%) was statistically higher than grade 1(22.6%). The onset time of headache within 6 months in grade 1 (88.2%) was significantly higher than grade 6 (64.1 %). The frequency of headache is more often in grade 6. As for the timing of occurrence of headache, grade 1 student suffered from it after school (36.4%), grade 6 student suffered from it at school (30.9%). Children who suffered from severe headache can't live in the routine life were grade 1 20.5 % and grade 6 21.1 %, respectively. According to the duration of headache, there were within 1 hour grade 1 90.9%, grade 6 81.8%, respectively. Risk factors of headache were, in grade 1, fatigue (34.0%), stress (25.0%), weather change (18.2%), anxiety (11.4%), and others (11.4%). In grade 6, there were fatigue(44.3%), stress (34.0%), weather change(10.9%), others (5.7%) and anxiety (5.1%). Conclusion : Starting school represents a remarkable life event for children. Starting school results in significantly increasing prevalence of overall headache. 목적 : 입학 전에 비해 입학 후 두통의 증가률을 알아보고, 1학년의 두통의 임상적 특징을 알아보고자 하였다. 방법 : 2002년 8월 1일부터 31일까지 광주시내 3개 초등학교 1학년과 6학년 학생 612명에게 설문지 (두통 에 대한 주요 설문지 내용 :부록)를 배부하여 그 중 작성이 불량한 60명을 제외한 552명 (1학년 195명, 6학년 357명)을 대상으로 두통의 유병률을 알아보았으며, 임상적 특징은 두통이 있는 학생 219명 (1학년 44명, 6학년 175명)을 대상으로 분석하였다. 결과 : 두통의 빈도는 1학년 44명 (22.6%), 6학년 175명 (49.0%)로 6학년에서 의의 있게 높았다(0.001). 두통의 초발 시기가 6개월 이상인 경우 1학년 11.8%, 6학년 35.9%이였으며, 6개월 미만인 경우는 1학년 88.2%, 6학년 64.1%로 입학 전보다 입학 후에 더 높았으며 6개월 미만의 초발 두통이 1학년에서 의의 있게 높았다(p=o. 03). 두통의 발생빈도는 6학년에서 통계학적으로 의의 있게 높았다(P=0. 03). 두통이 가장 자주 발생하는 시기는 1학년에서 학교 수업 후 (36.4%)이었고, 6학년에서는 학교 수업 중(30.9%)이었다. 학교나 일상 생활을 하기 힘들 정도의 두통은 각각 1학년에서 20.5%, 6학년에서 21.1%이었다. 두통의 지속시간은 1시간 이내인 경우가 각각 1학년 90.9%,6학년 81.8%이었다. 두통의 유별인자는 1학년에서 피로, 수면 부족이 34.0%로 가장 많았으며, 스트레스, 기후 변화, 불안, 기타 순이었고, 6학년은 피로 수면 부족 44.3%로 가장 많았으며, 스트레스 34.0%, 기후 변화, 기타, 불안 순이었다.

細胞質 遺傳子的 雄性不稔系統을 利用한 油菜 heterosis 育種에 관한 硏究 Ⅶ. 三元 交雜種 育成을 위한 莖片組織培養技術의 利用

Jung Il Lee(李正日),Jin Ki Bang(方鎭淇),Yong Hwan Park(朴用煥),Bong Ho Lee(李奉鎬),Rae Kyeong Park(朴來敬),Seung Pyo Rho(盧承杓) 한국육종학회 1988 한국육종학회지 Vol.20 No.2

This study was conducted to develope three way cross hybrid using MS maintainers derived from stem tissue culture. Seven maintainer lines of complete male sterility(100%)have been obtained and complete plants were obtained 98% by stem tissue culture. Ten differentiated plants could be obtained from one segment. The multiple shoots without roots could be divided into individual shoot and then transfered to vermiculite teralium box in order to get complete plants. The maintenance of MS lines and the production stability of three way cross hybrids could be possible by this method. Three way cross hybrids would be produced using different genetic constitution lines including MS line and its maintainer and restorer lines through tissue culture of lines with 100% male sterility maintaining ability. Commercial three way cross hybrid seed for 12,600ha could be produced from 105ha MS seed(F₁) production field through tissue culture of MS line and its maintainer MS line for seed production to be planted on 10a.

척추경막외복합마취시 경막외강으로 일회 주입한 생리식염수가 척추마취의 감각 차단 범위에 미치는 영향

김봉일,노운석,백승희 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.3

Background : Combined spinal epidural anesthesia(CSE) is used for obtaining adventages of both spinal and epidural anesthesia. But it might be suspected that epidural volume load affect spinal sensory blockade level during CSE. Methods : Eighty patients undergoing lower abdominal and lower extremity operation were involved in our study. Subarachnoid block with 12mg of tetracaine was established in all patients. Four groups were studied. Group 1(n=20), the control, received only spinal anesthesia. Group 2(n=20), group 3(n=20) and group 4(n=20) received 10, 15 and 20 ml of epidural saline immediately after spinal anesthetic administration. Sensory blockade level was checked by pinprick test at 5, 10, 15, 20, 25, 30, 40, 60 and 90 minutes. Blood pressure, heart rate and incidence of complications such as hypotension, bradycardia, nausea and high block were measured. Results : The sensory blockade level of groups 3 and 4 was higher than group 1(p$lt;0.05). Blood pressure and heart rate were not different compared with each other. The incidence of complications, except that higher block above T4 in group 4 was more than in group 1(p$lt;0.05), were not different when compared with each other. Conclusions : Epidural saline above 15 ml may affect sensory blockade level of spinal anesthesia during CSE. (Korean J Anesthesiol 1997; 33: 485∼490)

토마토 황화잎말림병 저항성 품종 선발을 위한 저항성 정도 및 과실특성

김우일(Woo Il Kim),김영봉(Yeong Bong Kim),이병정(Byeong Jeong Lee),오주열(Ju Youl Oh),이흥수(Heung Su Lee),손길만(Gil Man Shon),노치웅(Chi Woong Rho),임채신(Chae Shin Lim),하준봉(Jun Bong Ha),박영훈(Young Hun Park) 한국원예학회 2010 한국원예학회 학술발표요지 Vol.2010 No.10

친환경 풋고추 시설재배시 품종별 적정 관비량 설정

김우일(Woo Il Kim),오주열(Ju Youl Oh),김영봉(Young Bong Kim),이병정(Byeong Jeong Lee),손길만(Gil Man Shon),노치웅(Chi Woong Rho),임채신(Chae Shin Lim),하준봉(Jun Bong Ha),김병수(Byeong Soo Kim) 한국원예학회 2011 한국원예학회 학술발표요지 Vol.2011 No.5