Dieulafoy 양 병변에 의한 십이지장게실 출혈 1 예

김상현,김경환,이동현,송철수,정노원,박상제,김은규,하홍성,나일환,황윤이,성은영,최익수,신영기 대한소화기내시경학회 2001 Clinical Endoscopy Vol.23 No.1

Duodenal diverticula are first reported by Chomel in 1710. Duodenal diverticula are relatively common in adults with a prevalence of 23% in SRCP. The most duodenal diverticulum is asymptomatic. Complications such as obstruction, cholangitis, blliary stones, ulceration, perforation and hemorrhage can occur in approximately 10%. However, relatively few cases of bleeding from a duodenal diverticulum have been reported. The cause of bleeding from a duodenal diverticulum is uncertain and various suspected etiologies were suggested, such as ectopic gastric mucosa, stasis-induced ulceration, erosion into major vessels, aortoenteric fistuias, intradiverticujar polyp, aspirin-induced erosion. We report a case of a bleeding duodenal diverticulum by a Dieulafoy-like lesion and suggest this 1esion as one of posslble causes of blee4ng in duodenal diverticulum.

Penstemon penlandii 의 발아촉진방법

이석영,최원열,백형진,윤문섭,줄리라프만 한국국제농업개발학회 1999 韓國國際農業開發學會誌 Vol.11 No.2

Penstemon penlandii는 미국의 록키산맥에서 소집단으로 발견되나 자연상태에서는 발아가 불량하여 멸종위기에 처해있어 이 식물의 보존을 위한 발아방법을 구명하기 위하여 본 시험을 수행한 결과는 다음과 같다. 1. P. penlandii종자는 thermogradient에서 발아시킨 결과 10-30, 15-25, 20-30, 25, 25-30 그리고 15-30℃ 등의 변온조건에서 발아가 증진되었으며 높은 온도 조건에서는 미생물 오염에 의해 발아 및 유묘생장이 장해를 받았다. 2. 30psi에서 10-20초 동안 종피에 자극을 주었을 때 발아율 및 발아속도지수가 높았으나 일부 종자는 휴면타파가 이루어지지 않았다. 3. 종피에 물리적자극을 준 종자를 1mM의 GA3에 24시간 동안 침지하면서 15ccs-1속도로 aeration 시킨 후 blotter에 치상하였을 때 발아가 가장 촉진되었다. This study was undertaken to determine the germination requirements of Penstemon penlandii. The highest germination occurred using the scarified seeds (either hand or mechanical) on the thermogradient plate at 10-30, 15-25, 20-30, 25, 25-30 and 15-30℃. Individual germinators were used to verify thermogradient plate results, and speed of germination analysis suggested that 15-30℃ was the optimum temperature for rapid germination of P. penlandii after mechanical scarification. Laboratory germinations at 15-30℃ of mechanically scarified seeds (20-30 psi and 10-80 seconds) were correlated with seedling emergence in the greenhouse. Scarification rates of 30psi for 10-20 seconds produced highest rates of germination and emergence in laboratory and greenhouse tests. The germination procedure of submerging seeds in aerated 1mM GA3 for 24hours, placing seed on water moistened blotters at 15-25℃, and hand scarifying ungerminated seeds after 14days and allowing them to germinate for an additional week gave comparable germination percentage to hand scarification, mechanical scarification, and tetrazolium viability. Based on these data the recommended germination method for this species would be to submerge seeds in aerated (15ccs-1)1mM GA3 for 24h, place seeds on water moistened blotters, make the first counts at 14d and hand scarify the remaining dormant seed with final counts at 21d, or scarify seed by hand or with a mechanical scarifier before germination on blotters moistened with 1mM GA3, and counted after 7, 14, and 21 days.

Glutaraldehyde 와 자동 세척기를 이용한 내시경 소독방법의 임상에서의 유용성

김영호,손희정,윤성원,최규완,이남용,백승운,이준행,고광철,이풍렬,이종철,송재훈,안병훈,김재준,최원혁,홍일철 대한소화기내시경학회 2001 Clinical Endoscopy Vol.22 No.6

Background/Aims: Safety of endoscopic procedures has been a major issue over the last 10 years. Most endoscopy units use 2% glutaraldehyde and automated endoscope reprocessors (AERs) for disinfecting gastrointestinal endoscopes. We attempted an in-use evaluation of the current reprocessing procedures. Methods: Thirty flexible endoscopes were randomly collected just after upper endoscopic examinations and were disinfected using 2% glutaraldehyde in an AER. Cultures were taken from biopsy channels (S-l), tip of the insertion tubes (S-2), umbilical cords (S-3), and angulation knobs (S-4). Results: In 63,3% (19/30) of endoscopes, there was no microbial contamination after disinfection procedures. The culture positive rates of S-l, S-2, S-3, and S-4 samples were 20,0%, 0.0%, 3.3%, and 20.0%, respectively. Microorganisms of 13 species were identified, but there was no pathogen related with reported infectious complications after endoscopic procedures. Conclusions: Current disinfection procedure using 2% glutaraldehyde and an AER appears to be very effective in decontaminating patient-used endoscopes. Low level microbial contamination of endoscopes after conventional reprocessing methods may not impose great risk on patients.

건강과 행복을 추구하는 창원시설공단 경영혁신 우수사례

최원수(Won Soo Choi)(崔元洙) 한국지방공기업학회 2007 한국지방공기업학회보 Vol.3 No.1

우리 공단은 지난 2000년 2월 10일 창원시에서 10억원의 전액 현금을 출자하여 설립한 지방공기업으로 약 300여명의 직원이 시로부터 위탁 받은 스포츠, 청소년, 문화예술, 환경, 교통, 노인복지 시설 등을 경영하고 있다. ‘공단의 존재 이유는 시민’이라는 경영이념으로 경영전략체계를 정립하였으며, 2005부터 경영혁신을 추진하여 공단의 내·외부 환경 변화에 대응하여 ‘혁신은 선택이 아닌 필수’라는 사실을 인지하고, 직원들의 의식혁신을 위해 혁신아카데미 운영과 혁신관련 설문조사를 실시하였다. 일하는 방식 개선 및 효율적인 인력관리로 2년간 26명의 인력을 감축하여 연간 1,073백만원 인건비를 절감하였으며, 최근 2년간 수입규모 2배 증가와 수지율 90%로 연평균 22.5% 향상되어 공기업으로서 공익성과 수익성의 조화로운 성과를 거두고 있다. 그 결과 외부평가에서도 호평을 받아 행정자치부 주최 2006년 경영평가 ‘가’등급, 지방공기업학회 주최 제1회 경영혁신우수사례 최우수상 수상, 작년에 이어 2년 연속 대한민국 스포츠레저문화대상을 수상함으로서 일류 공기업으로 도약하고 있다. Changwon City Facilities Management Corporation, as a local public firm which Changwon city established by investing on billion won on Feb. 10, 2000, manages sports, juveniles, culture and arts, environments, traffics, facilities for welfare of the aged along with about three hundred staffs. On the basis of its corporate philosophy, 'Citizens, the reason for our existence', it set the management strategy system. And it has promoted managerial innovation since 2005 to let its members recognize that the innovation is not optional but essential, and operated an innovation academy and performed innovation-related questionnaire surveys for innovation in consciousness of all staffs. It settled complaints of customers positively through VOC, reduced the classes of standard plastic garbage bags from 40 to 8, developed and operated various programs for each facility, and held a conference for innovation in customer services. As a result, the monthly survey for customer satisfaction measurement showed improvement by ten points compared to the last year for the first time as a public firm. For innovation in the result-oriented organizational culture, it introduced BSC system to improve the compensation system which reflects the result of BSC performance on the assessment of an employee's performance, and reduced the team-based system consisting of four departments and three teams. In addition, it realized a win-win situation by overcoming labor-management conflicts and establishing peaceful labor-management relations. It has improved the service qualities of facilities by advancing convenient and main facilities and is forming sports complex of 36,300 square meters near the city center as a sports park. It is setting up FMS for efficient management of facilities and saved 0.1 billion won through ESCO program. It has downsized the work force (26 staffs) for two years and saved personnel expenses of 1.073 billion won every year. The income for the latest two years has risen and the ratio of earnings and expenses, which has been improved by 22.5% every year, was 90%. It is obtaining harmonious results in both public benefits and earnings as a public firm. Accordingly it gained public favor from the external evaluation. It ranked the first class from the managerial evaluation by the Ministry of Government Administration and Home Affairs in 2006 and received the first prize of excellent managerial innovation case by The Korean Association for Local Public Enterprises and so on. It is jumping up to the first-class public enterprise in Korea.

일원철학(一圓哲學)의 마음론과 사상인(四象人)의 마음공부(1) -『정전』 「제2 교의편」을 중심으로-

임병학 ( Lim Byeong-hak ),최구원 ( Choi Ku-won ) 한국동서철학회 2018 동서철학연구 Vol.0 No.88

This study is about the mind practice of Sasangin from the scriptures of Won-Buddhism of Il-Won Philosophy based on the mental factors of Sasangin that are determined in Donguisusebowon. Il-Won Philosophy and Sasang-philosophy have a common point in mind practice. Based on the Yin and Yang concept of Itching, Sotaesan (少太山) has revealed the religious mentality and ethical life of the human being through psychological creation, while Dongmoo (東武) invented Sasang medicine based on humanity’s moral mind. In particular, these two philosophies are Korean philosophies originated from the mind of love that seeks to help people to overcome the suffering of life. This thesis is the first attempt to integrate the Il-Won Philosophy and the Sasang philosophy. It examines the mind practice of Sasangin centering on The Fourfold Graces, The Four Essentials and The Eight Articles which are the basic teachings of the Il-Won Philosophy. First, The Fourfold Graces of Jungjeon are connected to the mind study of Sasangin through In-ui-ye-ji. Because the In is related to the grace of parents, the Ui colligates the grace of laws, Ye is coupled with the grace of fellow beings and Ji is connected to the grace of heaven and earth. So Taeyangin needs to study mind practice to know the grace of laws and appreciate them. Soeumin must do mind practice to appreciate the grace of fellow beings and Soyangin needs to perform mind practice about respect and gratitude for one’s parents. We can know that Taeeumin needs to improve the mind that expresses gratitude for heaven and earth. In the four Essentials, ‘The Developing Self-Power’ is a way to overcome the lazy mind of Soyangin. ‘The Primacy of the Wise’ becomes a way of the self-discipline of the mind to overcome the greedy mind of Taeyangin. ‘Educating Others’ Children’ is a great method of mind practice which overcomes the extravagant mind of Taeeumin. ‘Venerating the Public-Spirited’ is a way of mind practice that overcomes the dogmatism(奪心) of Soeumin. Next, in the proceedings of The Eight Articles(八條), Taeyangin needs to have the faith that sets the mind when trying to accomplish everything; Soeumin needs their mind practice to have zeal, with brave and strong intentions toward their goals; Soyangin needs to polish up the heart until the end to achieve the goal; and Taeumin has to discipline the mind with a suspicion of knowing that which he does not know wisely. Taeumin nreuires a mind practice that has doubts arising in one’s mind for knowing wisely what one does not know. In The Four Articles to Forsake, Taeumin has a mind of disbelief that cannot be determined because of indulgence(侈心), Soeumin has a foolish mind to distort everything in his own way because of having dogmatism(奪心), Soyangin has a lazy heart and Taeyangin has the greediness to want for everything, so the four Sasangins need mind practicing to remove these faults.

Long-term outcomes of single-port laparoscopic myomectomy using a modified suture technique

( Mina Kang ),( Jihye Kim ),( Tae-joong Kim ),( Jeong-won Lee ),( Byoung-gie Kim ),( Duk-soo Bae ),( Chel Hun Choi ) 대한산부인과학회 2020 Obstetrics & Gynecology Science Vol.63 No.2

Objective To evaluate the long-term outcomes, including the pregnancy outcome and recurrence rate after single-port laparoscopic myomectomy (LM) using a modified suture technique with a Hem-o-lok clip (Choi’s LM) and conventional 4-port LM. Methods A retrospective study of patients who underwent Choi’s LM (n=55) and 4-port LM (n=102) in a single institutional hospital was conducted. Patients with <3 symptomatic myomas sized <10 cm each and operated on by a single surgeon were included. Recurrence was confirmed when a myoma measuring ≥3 cm was detected. Results The patients in both groups had similar demographic characteristics. Single (76.4% vs. 62.7%) and intramural (52.7% vs. 56.9%) tumors were commonly detected in both groups in the mean diameter (6.8±1.5 cm vs. 7.0±1.6 cm; P=0.40). In Choi’s LM, 16 patients (29.1%) needed an additional port; those who were nulliparous and/or had a large leiomyoma more frequently required an additional port (P=0.023 and 0.04, respectively). During a median follow-up period of 69 months, 17 patients (7.1% vs. 14.6%) had recurrence. The size of dominant myomas at recurrence was significantly smaller in patients who underwent Choi’s LM (3.4±0.7 cm vs. 5.7±2.4 cm; P=0.004). All 13 patients in both groups who successfully conceived had a full-term delivery. No major complications occurred during pregnancy. Conclusion Although an additional port was frequently used, the long-term outcomes of patients who experienced recurrence and pregnancy after Choi’s LM were acceptable. Considering its usability, Choi’s LM is feasible for the treatment of uterine leiomyoma.

Analysis of the Reduction Gear in Electric Agricultural Vehicle

Won?Sik Choi,Soon-Goo Kwon 한국산업융합학회 2018 한국산업융합학회 논문집 Vol.21 No.4

In electric agricultural machine a reduction gear is needed to convert the high speed rotation motion generated by DC motor to lower speed rotation motion used by the vehicle. The reduction gear consists of several spur gears. Spur gears are the most easily visualized gears that transmit motion between two parallel shafts and easy to produce. The modelling and simulation of spur gears in DC motor reduction gear is important to predict the actual motion behaviour. A pair of spur gear tooth in action is generally subjected to two types of cyclic stress: contact stress and bending stress. The stress may not attain their maximum values at the same point of contact fatigue. These types of failure can be minimized by analysis of the problem during the design stage and creating proper tooth surface profile with proper manufacturing methods. To improve its life expectation in this study modal and stress analysis of reduction gear is simulated using ANSYS workbench based on finite element method (FEM). The modal analysis was done to understand reduction gear deformation behaviour when vibration occurs. FEM static stress analysis is also simulated on reduction gear to simulate the gear teeth bending stress and contact stress behaviour.

대학태권도선수의 실수인식과 의도적 연습 및 인지된 경기력의 관계

최봉준(Choi, Bong Jun),원세종(Won, Se-Jong) 세계태권도문화학회 2022 세계태권도문화학회지 Vol.13 No.2

The purpose of this study was to investigate the relationship of perception of error, deliberate practice, and perceived performance of University Taekwondo Athletes. To this end, 321 Taekwondo athletes (male 207, female 114) participated in this study. Collected data were analyzed by descriptive statistics, correlation, and multiple regression using SPSS 22.0 version. The results revealed as follow. First, learning from error, error risk taking, and thinking about error had a positive effect on deliberate practice. Second, learning from error and thinking about error had a positive effect on performance satisfaction while error risk taking and thinking about error had a positive effect on will to win. Third, deliberate practice had a positive effect on performance satisfaction and will to win. In conclusion, athletes’ perception of error is key component to enhance deliberate practice and perceived performance. Furthermore, deliberate practice was also identified as a variable that improves perceived performance.

Capturing Lexical Variance with a Mixed Model : Verb in Ordering Variation

Hye-Won Choi 담화·인지언어학회 2010 담화와 인지 Vol.17 No.1

Based on the dative data collected from Sejong Corpus (Kim 2000), Choi (2010) has analyzed the word order variation and proposed a statistical model of logistic regression that identifies all predictive variables that influence word order and predicts which order (between 'dative before accusative' (DA) and 'accusative before dative' (AD)) is more likely to occur, given the predictor variables. Building up on the Choi's (2010) analysis, this paper investigates whether a lexical variance caused by word is also affecting the choice of dative word order. In particular, variation caused by the verbs of dative construction is examined in depth, and verb is indeed proved to be a significant random variable. To capture the new random effect by verbs, as well as the fixed effects identified in Choi (2010), this paper proposes a new mixed model that considers fixed and random effects together (Bresnan et al. 2007, 2008, 2009, Baayen 2008, Johnson 2008). The mixed model turns out to be a more powerful model that secures higher accuracy in its predictions.

우리나라 초고층용(超高層用) 건설(建設)팩토리 개발(開發)을 위한 성능평가체계(性能評價體系)에 관(關)한 기초적(基礎的) 연구(硏究)

최원준 ( Won-jun Choi ),김창규 ( Chang-kyu Kim ),송인식 ( In-shick Song ),임상채 ( Sang-chae Lim ) 한국건축시공학회 2007 한국건축시공학회 학술발표대회 논문집 Vol.7 No.2

This study aims to develop a performance evaluation system for the Construction Factory(CF). The CF is a kind of full automation system for building construction which consists of the lifting system for building materials, the built-up unit for steel structural components, the bolting robots, the control center for the site management, and the site covering system. The CF is developing now as a project of the construction automation and robotics. In this study we firstly reviewed the state-of-the-art of the construction automation and robotics in the foreign and the domestic, and investigated the precedent case of the CF such as the SMART System of Shimizu Co., Japan. We believe that without an objective evaluation of the results there won``t be growth in technological R&D. Therefore, this study sees the developing CF as an new technology and method in building construction, and proposes the direction and frame of the appropriate evaluation which can be applied into the CF.