운동부하검사시 필터링 구간 설정에 따른 최대산소섭취량의 변화 및 신뢰도 분석 연구

박혜민,박규민,이종백 한국코칭능력개발원 2023 코칭능력개발지 Vol.25 No.2

The purpose of this study is to measure the V ̇O2max of athletes using the KISS (Korea Institute of Sports Science) protocol to evaluate the cardiorespiratory endurance of athletes, and to verify the difference between raw data and V ̇O2max by filtering section and analyze reliability. The purpose of this study is to contribute to the efficient use of V ̇O2max. For the subjects of the study, 40 male elite athletes in endurance events were selected. In this study, O2, CO2, and N2 values were analyzed by using the breath by breath system with Quark CPET (Cosmed, Italy) equipment, and the amount of exhaled and inhaled gas during breathing through the mouthpiece turbine. Using the measured results, Exercise duration time and time average filtering intervals of 10 seconds, 20 seconds, and 30 seconds, and smoothing filtering intervals of 5, 7, and 11 were set, respectively, and one-way ANOVA was performed to analyze the difference between each interval. To analyze the reliability between (one-way ANOVA) and V ̇O2max, Pearson's correlation analysis and bland-altman plot were analyzed. As a result of the study, there was no statistically significant difference in V ̇O2max between the filtered sections. There was a statistically significant difference in maximum heart rate by filtering section (p<.01). In the reliability analysis for each filtering section, the highest confidence interval appeared in the smoothing section of 11 and the time average section of 10 seconds. Based on these data, when selecting the filtering section of V ̇O2max, attention should be paid to the data lost compared to the heart rate setting and raw data, and a follow-up study on changes in the middle part of the data by evaluating the anoxic threshold together is necessary. 이 연구의 목적은 운동선수들의 심폐지구력을 평가하기 위한 KISS(한국스포츠정책연구원) 프로토콜을 이용하여 선수들의 V ̇O2max를측정하고 raw data의 필터링 구간별 V ̇O2max 데이터와의 차이검증 및 신뢰도 분석을 통해 V ̇O2max의 데이터의 효율적인 활용에 기여하는데 연구의 목적이 있다. 연구의 대상은 지구성 종목 남자 엘리트선수 40명을 선정하였다. 본 연구에서는 Quark CPET(cosmed, Italy) 장비로 breath by breath 시스템을 이용하여 호흡 시 호기와 흡기 가스량을 마우스피스 터빈을 통하여 O2, CO2, N2 값을 분석하였다. 측정된 결과를 이용하여 탈진시간(exercise duration time)과 time average 필터링구간 10초, 20초, 30초, smoothing 필터링 구간 5, 7, 11을 각각 설정하여 각 구간별 차이를 분석하기 위해 일원 분산분석(one-way ANOVA)과 V ̇O2max 자료 간 신뢰성을 분석하기위해 상관관계(pearson’s correlation)분석 및 bland-altman Plot을 분석하였다. 연구 결과 필터링 된 구간 간의 VO2max 통계적 유의한 차이는 없었다. 최대심박수는 필터링 구간별 통계적인 유의한 차이기 있었다(p<.01). 필터링 구간별 신뢰도 분석에서는 smoothing 11구간과 time average 10초 구간에서 가장 높은 신뢰구간이 나타났으며, 필터링 구간이 커질수록 raw data와의 차이와 평균절대오차(MAPE)가 커졌다. 이러한 자료를 토대로 V ̇O2max의 필터링 구간을 선정 시 심박수 설정과 raw data 대비 소실되는 자료에 대한 주의가 필요하며 무산소성역치를 함께 평가하여 데이터의 중간 부분에 대한 변화에 대한 후속 연구가 필요하다.

따로 또 같이-'우리 아이들의 나라는 15' 공연을 보고 나서...

박혜민 우리신학연구소 2005 갈라진 시대의 기쁜소식 Vol.- No.680

동상 : 국무총리,교육인적자원부부총리상 ; 『제3회전국초, 중, 고, 대학생 한자교육 진흥을 위한 글』현상공모 수상작 : 암구의 사색

박혜민 전국한자교육추진총연합회 2003 한글한자문화 Vol.43 No.-

Quality Assessment of Health Care of RA: Analysis of the Korea National Health Insurance claims data

박혜민,서미령,여지나,최효진,정재훈,백한주 대한내과학회 2022 대한내과학회 추계학술발표논문집 Vol.2022 No.2

융게 도이체 필하모니 내한 연주회 <2002년 4월 24일 인천종합문화예술회관>

박혜민 한국음악평론가협회 2002 음악평론 Vol.12 No.-

Alemtuzumab for pure red cell aplasia

박혜민,임재욱,박주환,김은혜,전홍길,박재후,김혁 대한내과학회 2012 대한내과학회 추계학술발표논문집 Vol.2012 No.1

구연산철 환원 조건하에서 Shewanella sp. HN-41에 의한 6가 크롬의 환원

박혜민,곽진협,이지훈 한국환경농학회 2023 한국환경농학회지 Vol.42 No.3

. In the environment, chromium often exists in a highly mobile and toxic form of Cr(VI). Therefore, the reduction of Cr(VI) to less toxic Cr(III) is considered an effective remediation strategy for Cr(VI)-contamination. In this study, the biological reduction of hexavalent chromium was examined at the concentrations of 0.01 mM, 0.1 mM, and 1 mM Cr(VI) by the dissimilatory metal-reducing bacterium, Shewanella sp. HN-41 in the presence of ferric-citrate. With the relatively condensed cell densities, the aqueous phase Cr(VI) was reduced at the proportions of 42%, 23%, and 31%, respectively for the 0.01 mM, 0.1 mM, and 1 mM Cr(VI) incubations, while Fe(III)-citrate was reduced at 95%, 88%, and 73%, respectively. Although the strain HN-41 was not considered to reduce Cr(VI) as the sole electron acceptor for anaerobic metabolism in the preliminary experiment, it has been presumed that outer-membrane c-type cytochromes such as MtrC and OmcA reduced Cr(VI) in the presence of ferric-citrate as the electron acceptor. Since this study indicated the potential of relatively high cell density for Cr(VI) reduction, it might propose a bioremediation strategy for Cr(VI) removal from contaminated waters using engineered systems such as bioreactors employing high cell growths

사각형의 둘레와 넓이의 관계에 대한 초등학교 6학년의 이해 분석

박혜민,장혜원 대한수학교육학회 2019 수학교육학연구 Vol.29 No.4

This study focused on analyzing the understanding of relationship between perimeter and area of the quadrilateral by 97 sixth grade students that learned perimeters and areas of polygons. To do this, a paper and pencil test consisting of four questions that contain the relationship between perimeter and area was conducted. The results for this study were analyzed by frameworks. As per the results, students had errors about the concept of the relationship between perimeters and areas in quadrilaterals. The levels of the students’ justification mainly correspond to the experiential, comprehensive, and deductive ones. The types of students’ errors were classified as the errors of [same A-same B] or [increase A-increase B] between perimeter and area of the quadrilateral, hasty generalization, visual judgment, and illogical development. Based on the results of the analysis, some significant implications for the teaching of relationship between perimeter and area in school education field were derived. 측정 영역에서 학생들이 흔히 갖는 오개념 중 하나가 평면도형의 둘레와 넓이의 관계에 대한 것으로, 둘레 또는 넓이 중 하나가 같으면 다른 하나도 같다고 믿거나 하나가 증가하면 다른 하나도 증가한다고 믿는 것이다. 본 연구에서는 다각형의 둘레와 넓이에 대해 이미 학습한 초등학교 6학년 학생 97명을 대상으로 사각형의 둘레와 넓이의 관계에 대한 이해를 묻는 4가지 문항으로 구성된 검사지를 적용하여 정ㆍ오답률을 통해 이해 정도를 파악하고, 특히 정당화의 수준 및 오류의 유형 면에서 분석하고자 하였다. 연구 결과, 학생들은 사각형의 둘레와 넓이의 관계에 대한 이해가 부족한 것으로 나타났으며, 학생들의 정당화 수준은 문항 특성에 따라 차이가 있지만 주로 경험적 정당화, 포괄적 정당화, 연역적 정당화로 나타났고, 학생들이 보인 오류는 유형 상 [A 동일 → B 동일], [A 증가 → B 증가]의 개념적 오류, 성급한 일반화의 오류, 시각적 판단의 오류, 비논리적 전개의 오류로 분류되었다. 분석 결과를 토대로 사각형의 둘레와 넓이의 관계 지도를 위한 몇 가지 교수학적 시사점을 도출하였다.

西方要紀 와 조선 지식인들의 독서

박혜민 동방한문학회 2023 東方漢文學 Vol.- No.96

This study analyzed the narrative purpose and composition method of Xipang Yaoji among translations by the Society of Jesus introduced since the 17th century, and the reading pattern by Joseon intellectuals, and examined its academic meaning. Xipang Yaoji was a project by various Italian Jesuits in the early days of his entry into China, which originated from a missionary method that combined Western studies and Catholic Christian ideas during the Western Middle Ages and Renaissance. Written for the purpose of showing the emperor, the book describes Europe as a Catholicized space as a fair and moral space. They set lands beyond the purview of the Zhifang Si, the Imperial cartography office. When Lee Donjung, a Joseon intellectual, wrote Suh Yanggi, he defined Europe's location in the first table of contents because he thought it was important to know the difference between Xipang used in the Chinese character culture and Xipang used by Jesuits as a translation language. Originally, for Chinese and Koreans, Xipang was a term referring to the area along the Indian Ocean and was a space under the emperor's rule. Nevertheless, Koreans often confused Xipang, which they originally understood, with Xipang, which was newly translated by Jesuits. This is because as soon as it is translated into the language of the audience, the concept of the audience leads to an area unknown in the original language. Meanwhile, Lee Gyugyeong cited not only the atlas of Jesuits written in the 16th and 17th centuries, but also Haiguo Tuzhi written by Chinese Wei Yuan in Book Ohju Yeonmun Changjeon Sango. Among them, Xipang Yaoji was used to describe the Jesuits' history of missionary work in China and to supplement information on drugs. Jesuits expected the Chinese to reset their geographical ideas through the atlas. Therefore, the record of reading the atlas by Chinese and Koreans shows the process of finding out that their thoughts they have believed in are not complete. Research on the studies introduced by Jesuits in Joseon was conducted at a personal level. Rather than understanding Jesuits' atlas academically, Koreans treated it as a collection of strange stories or reference books necessary for natural science.

3~4학년군 수학 교과서의 문제 만들기 과제 유형에 따른 학생들의 반응 분석

박혜민,임미인 대한수학교육학회 2023 학교수학 Vol.25 No.1

In order to enhance students' mathematical problem solving competency, the 2015 revised mathematics curriculum emphasized problem posing as a sub-factor of problem solving competency. In this study, we analyzed task types of problem posing in the 3rd and 4th grade mathematics authorized textbooks and students' responses to the representative types of problem posing task. As the results of analysis, even though they are the same lesson units, the number and types of problem posing tasks in the units varied by publishers, and there are differences in students' responses to each type. From the results of this study, some implications for constructing problem posing tasks in elementary mathematics textbook and teaching problem posing were suggested. 학생들의 수학적 문제해결력을 신장하기 위하여 2015 개정 수학과 교육과정에서는 문제 만들기를 문제해결 역량의 하위 요소로 강조하였다. 이에, 본 연구에서는 2015 개정 교육과정에 따라 개발된 3~4학년군 검정 수학 교과서의 문제 만들기 과제 유형을 분석하여 대표적인 유형에 대한 학생들의 반응을 살펴보았다. 연구 결과, 동일한 단원임에도 불구하고 출판사마다 문제 만들기 과제의 수와 다루는 유형이 다양하였고, 과제 유형에 따른학생들의 반응에도 차이가 있었다. 본 연구의 결과로부터 수학 교과서의 개발 및 교수・학습의 측면에서 문제만들기에 관한 몇 가지 시사점을 도출하였다.