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유비쿼터스 헬스케어 시스템을 위한 노드기반의 R피크 검출 알고리즘
이대석,황기현,차경환,Lee, Dae-Seok,Hwang, Gi-Hyun,Cha, Kyoung-Hwan 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.1
현재 무선센서노드 기반의 헬스케어 모니터링 시스템이 활발히 연구되고 있다. 하지만 생체신호의 모니터링을 위한 전체 데이터의 전달은 무선센서네트워크 내의 데이터 트래픽과 에너지 소모가 증가하게 된다. 본 연구에서는 경량의 전처리 과정 및 알고리즘을 통해 ECG신호에서 의미있는 파라미터만을 검출하여 전송하였다. 본 연구에서는 정상적인 ECG에서 무선센서노드에서 R피크, RR간격을 검출할 수 있는 TinyOS 기반 어플리케이션을 구현하였으며 결과로 dECG, R피크, RR간격, HRV를 그래프로 확인 할 수 있었다. 따라서 본 연구를 이용하면 ECG신호 전체 데이터가 아닌 주요 정보만을 보냄으로서 에너지 소모, 데이터량을 줄일 수 있다. The QRS complex in ECG analysis is possible to obtain much information that is helpful for diagnosing different types of cardiovascular disease. This paper presents the preprocessor method to detect R-peak, RR interval, and HRV in wireless sensor node. The derivative of the electrocardiogram is efficiency of preprocessing method for resource hungry wireless sensor node with low computation. We have implemented R-peak and RR interval detection application based on dECG for wireless sensor node. The sensor node only transfers meaning parameter of ECG. Thus, implementation of sensor node can save power, reduce traffic, and eliminate congestion in a WSN.
이대석 한양대학교 셰익스피어 연구회 1993 The Hanyang Shakespeare Studies Vol.3 No.-
This paper suggests that, in spite of the apparent differences in period, theme and dramatic device, Aristophnes's Lysistrata and Shakespeare's Twelfth Night resemble each other in that love-motifs drive the characters into "folly and madness" and these features make the plays comic. Therefore, the purpose of this study is to seek the love-motifs and folly/madness images, and to compare them on the basis of Sussane Langer's theory of " The Comic Rhytmn." First of all, the love-motifs seem to determine the main structural patterns of the two plays. Though Lysistrata is Aristophanes's "firm protest against the continuance of the Peloponnesian War'" the dominant impression if "an easy laughing awareness of the habits, penchants, and instincts of women" which almost nullifies Lysistrata's antimilitary campaign; the physiscal or instictual realities of male characters' unsatisfied sewual desire; and the human flaws resulting from them. Though Twelfth Night opens with melancholic, moody speech of Orsino, the general atmosphere is a festive mood; and the essential determinant of the structural pattern seens to be the " spirit of love" or " the oceanic Illyrian eros." In this comedy, the references to "folly" occur more than twenty times chiefly from Act I, scene ⅱ to Act Ⅲ, scene ⅰ in variegated form; and the references to "madness" are seem more than thirty times mainly in the latter part of the play (Ⅲ. ⅲ. -Ⅴ. ⅰ) in various contexts. In Lysisterata, we cannot trace and direct reference to folly and madness, but the utterances of chief charcters show apparently their foolish or mad physical reactions resulting from unsatisfied sexual desire. Briefly, despite their differences in various dramatic elements, these two comedies seem to retain a similar structural pattern to each other in that love-motifs drive the chracters into the comic action of "folly and madness."
中等學校長의 指導類型이 敎師의 士氣昻場에 미친영향 : 全羅南道 市를 中心으로
李大石 서강정보대학 1981 論文集 Vol.2 No.-
1. The study of leadership style and what effect it will have 'on the teacher's morale and the style to be studied are. 1) Authoritarion 2) Democratic 3) Laissez-faire 2. For the adaptation of teacher, Democratic leadership style is emphasized in all fields. 3. For the stability of teacher, Democratic' and Authoritarion leadership style is emphasized in these fields, especilly self-control leadeaship is wanted in the Authoritarian. 4. For the feeling of belonging of teacher, Democratic leadership style is emphasized in all fields. 5. For the environment and the friendship of teaches, Democratic style is the most superior among them and for the Educational authority, Democratic style is the most superior among them except the satisfaction for the teaching profession. 6. The goal is to structure to the schooling sytem under democratic leadership. Through this, Democratic leadership presided by the principal hope full the teacher's morale will inevitably in cease leading to better accomplishment of school work.