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      • KCI등재

        Single-port robot-assisted abdominoperineal resection: a case review of the first four experiences

        최문석,윤성현,신정경,박윤아,허정욱,조용범,김희철,Lee Woo Yong 대한대장항문학회 2022 Annals of Coloproctolgy Vol.38 No.1

        Recently, abdominoperineal resection (APR) using a robot has been demonstrated in other studies. However, there has been no report on APR for rectal cancer using the single-port robot (SPR) platform. In response to this research gap, we described the clinical experience of APR using a SPR. From April 2019 to March 2020, APR using a SPR platform was performed in a total of 4 patients. Three patients had a transumbilical approach, and 1 patient had a transstoma site approach. The average operation time was 307 minutes, and the patient docking time to the SPR platform was 133.5 minutes. There were no complications during the operation, and no laparoscopy or open conversion. No reoperation occurred within 30 days. Mild postoperative complications occurred in 2 patients. We found that APR has safety and feasibility in surgery using an SPR platform. There was no intraoperative event and severe postoperative complications.

      • 한국형 위성항법시스템 궤도 설계 및 항법 성능 분석

        최문석,원대희,성상경,이지윤,김정래,이영재,박준표,박흥원 한국항공우주학회 2013 한국항공우주학회 학술발표회 논문집 Vol.2013 No.4

        한국형 위성항법시스템의 궤도 설계에 있어 위치정확도를 고려한 위성 조합의 분석이 필요하다. 한국형 위성항법 시스템에 적합한 항법위성 후보 조합인 EIGSO (Elliptical Inclined Geosynchronous Orbit)와 GEO (Geostationary Orbit)의 조합이다. 북반구 사용자의 관점에서 위성항법시스템의 남북방향의 위치오차가 동서방향의 위치오차보다 크다. 본 논문은 HDOP (Horizontal dilution of precision)을 동쪽방향과 북쪽방향으로 나누고, 궤도 요소에 따른 북쪽 방향의 DOP 요소의 크기를 분석하였다. 궤도 경사각, 궤도 이심률, GEO 배치 변화에 따라 남북 방향의 위치 오차를 고려한 항법 성능을 분석하였다. Orbit design element of Korean navigation satellite systems need to analyzed orbit combinations consider position accuracy. Korean navigation satellite systems for candidate combinations are EIGSO (Elliptical Inclined Geosynchronous Orbit) and GEO (Geostationary Orbit). Position error of the north-south direction of the satellite navigation system is greater than the position error of the east-west direction from the user"s point of view the Northern Hemisphere. Divided into the north and east direction (Horizontal dilution of precision) HDOP, This paper analyze the size of the element in the direction of North DOP orbital elements. Eccentricities, inclination, GEO placement changes depending on the position error of the north-south direction navigation performance were analyzed.

      • KCI등재

        디지털인재 양성을 위한 초등학교의 보편적 정보교육 도입의 필요성 연구

        최문석,신승기 한국정보교육학회 2022 정보교육학회논문지 Vol.26 No.3

        The government of South Korea discusses ways to expand computer science eduction to solve the digital divide. In-service elementary school teachers are also aware of the need for computer science education, with 77.3% of those who responded positively to the expansion of computer science eduction. The participating ele­mentary school in this study has conducted computer science education for more than an hour per a week since the 1980s. As a result of a survey, the proportion of students taking private education was 16.2%. It shows 50.3% lower than 66.5% of other surveys conducted in 2021, which means the effectiveness in reducing private education when continuous computer science eduction is being conducted in the school system. In the case study analysis, teachers pointed out that the instructional content varies by instructors due to the absence of the national curriculum. The parents recogrdzed the importance of computer science education but did not know the learning content and mentioned the necessity of the national computer science education curriculum. It means that com­puter science education should provide a universal educational opportunity as an independent subject in elementary schools for nurturing future talents. 현재 정부에서는 디지털 격차 해소를 위한 정보교육 확대 방안이 논의되고 있다. 현장 초등학교 교사 역시 정보교육의 확대에 긍정적으로 응답한 사람이 77.3%가 될 정도로 정보교육의 필요성에 대해 인지하고 있다. 본 연구를 위해 정보교육의 필요성을 분석한 D초등학교는 1980년대부터 지금까지 주당 1시간이상의 정보교육을 꾸준히 실시했다. 학생들에게 정보교육의 사교육 절감 효과를 살펴보기 위해 설문조사를 실시하였으며, 사교육을 하는 학생의 비율이 16.2%로 나타났다. 이는 2021년에 실시된 타 설문조사의 사교육 참여 비율로 응답된 66.5% 보다 50.3% 적은 수치를 보여주며 사교육 절감에 효과가 있을 것으로 기대되었다. 사례연구 분석 결과에서 교사는 교육과정의 부재로 인한 강사에 따른 학습 내용이 달라짐을, 학부모는 중요성은 인지하나 학습 내용을 알 수 없다는 지적을 하며 정보교과 및 교육과정의 필요성에 대해 언급했다. 이는 미래 인재 양성을 위해 정보교육은 초등학교에서 독립교과로서 보편적인 교육의 기회가 제공되어야 함을 의미한다.

      • KCI등재후보

        Laparoscopic pancreaticoduodenectomy in pancreatic ductal adenocarcinoma

        최문석,노승윤,김성현,황호경,이우정,강창무 대한내시경복강경외과학회 2021 Journal of Minimally Invasive Surgery Vol.24 No.3

        Laparoscopic pancreatoduodenectomy (LPD) in pancreatic cancer is primarily criticized for its technical and oncological safety. Although solid evidence has not yet been established, many institutions are performing LPD for pancreatic cancer patients, with continuous efforts to ensure oncologic safety. In this video, we demonstrated a case of standard LPD combined with vascular resection in pancreatic cancer.

      • 북한 금기담에 대한 일고찰

        최문석 경희대학교 민속학연구소 2003 한국의 민속과 문화 Vol.7 No.-

        Proverbs and their subcategory, taboo expressions, have neither been formed nor extinct for a short period of time, so this study investigates the characteristics of taboo expressions of North Korea based on the findings from North Korea's proverbs collections: Choseon proverbs (1984) and choseon proverbs collection (1992). It was difficult to identify the holistic aspects of North Korea's taboo expressions with limited resources; however, it was possible to study parts of the aspects of the existing taboo expressions. Chapter 2 describes some characteristics of taboo expressions in North Korea. The study found that some proverbs in North Korea have been interpreted differently from the established interpretations. They can be interpreted due to instilling the socialistic state establishment in the people's mind: idolizing the Great Leader, Kim il-sung, and his son, Kim Jong-il; increasing hostility to the societies in capitalism; and provoking the people's motivation to labor. These characteristics of North Korea's proverbs are found in their subcategory, taboo expressions, and the original meanings of some taboo expressions are changed and new meanings are created to maintain the social system. Chapter 3 explains North Korea's taboo expressions in terms of their contents, semantic characteristics, and morphological characteristics. Taboo expressions are classified into 4 categories in terms of contents: stressing the agriculture-centered tradition, increasing labor motivation, refining the peoples thoughts, and criticizing anti-systematic facts and others. one of the findings is that the language is seen as a tool of social struggles and developments based on Kim il-sungs philosophy of Juche. In sum, many taboo expressions are changed, distorted, and created to maintain and reinforce the social system of North Korea. Examples of created taboo expressions were much less than those of changed and distorted expressions. This is due to the characteristics of a proverb formation process that it is made naturally because of the need of common people. The main ways of transformations are 'changing a part of a proverb', 'making a commentary for political needs', In short, the proverbs in North Korea are generally used as a tool to maintain and reinforce the social system, and to refine people's thoughts so that the North Koreans have changed their forms or distorted their original meanings and provided them to the people.

      • KCI등재

        의미 중심의 연결어미 교육 방안 연구 : '­기에(는)'을 중심으로

        최문석 국제한국어교육학회 2004 한국어 교육 Vol.15 No.1

        It is not easy to teach and to learn Korean connectives for both teachers and learners since they reflect many grammatical features. Teachers should always consider what and how to teach the connectives. When teaching the connectives, teachers should consider many things, such as distinguishing which type of the connectives is, how those convey meanings, time constraints, subject constraints, word ending constraints, semantic and discourse constraints between sentences, situations in use, styles and so on. Situations in use and practice constructions of connectives are based on the those meanings since the constraints the connectives have are dependent on the meanings. That is to say, to be effective to teach the connectives, practices of situations in use and practice constructions should be based on the meanings of the connectives. 'Gie(neun)' has the meanings of 'causes and reasons' and 'standards of judgment' and this paper is focused on the latter. Based on the meaning of 'standards of judgment', this paper suggests content-based teaching methodology of the connective through the presentations of meaning, of situations in use to practices in stages. On the stage of the meaning presentation, the teaching method that the learners can comprehend its grammatical meanings through the syntactic and semantic conditions between sentences connected with 'gie(neun)' is suggested. Second, on the stage of presentation of situation in use, example sentences used with those constraints 'gie(neun)' has are presented so that the learners can explicitly understand the grammaticality of 'gie(neun)' type of connectives. Finally, practices in stages from understanding the meaning of 'gie(neun)' and restructuring its situation in use by the learners themselves to using the 'gie(neun)' type of connectives in practical communicative situations are suggested. (Kyung Hee University)

      • KCI등재

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