실내사회체육시설의 온도, 습도, 조명도에 관한 실태분석

조연철,이원재,이달원,김영환 啓明大學校 生活科學硏究所 1995 科學論集 Vol.21 No.-

This study is aimed to analyze investigations on the envoronmental conditions of indoor sports facilities and to research the effects of environmental pollutants on the health. Among the sites of rollerskate, bowling, table tennis, and taekwondo in Taegu city area, three sites were selected in this study respectively. The data measured are temperature, humidity and illumination. These examined data were compared with seasons, indoor and outdoor, and time from standard levels. The conclusions derived from the results obtained are as follows : Air temperture was not significantly different in all times, but showed significant differences between indoor and outdoor values. In bowling site, it was not significantly different in seasons. In rollerskate site, it showed distinctive differences among 4 sites. Humidity did not show significant difference with time, but was the lowest between 2-4 p.m. and 6-8 p.m. in winter. So temperature variation had effects on the discomfort in indoor sports facilities more than temperature level itself. Illumination was below 100 Lux in rollerskate and taekwondo sites, over 100 Lux in table tennis and bowling sites. This investigation revealed some negative aspects of environmental management. So we must be able to maintain artificial illumination for guests' eye-power. From the above results, the government is requested to prepare an appropriate administrative measure for the commercial indoor sports facilities.

한국 근대사에 있어서 체육의 역할(Ⅰ) : 학교체육을 중심으로 with school physical education as the central figure

이달원,조연철 啓明大學校 生活科學硏究所 1997 科學論集 Vol.23 No.-

This thesis treated with the role of school physical education in korean modern history. The modern schools been established by pioneer or christian missionary since the end of seventeenth century have taken advantage of physical education for the sake of the retrieval of national prestige and wealthy country and a powerful army and have developed the racial physical education. These schools of various kinds have set the goal at knowledge, virtue and physical education of education and especially have valued much of physical education. The general gymnastics and military drill as the method of physical education practice were enforced separately but it treaded toward military character. As the method of physical education active, it was activated through athletic meet this day and the field day also exhibited the military organization and march. The filed day was supported greatly from Emperor and the queen to the general public, facility expenses and awarding prizes were appropriated local expenses in the government schools and appropriated the volunteers in the private schools, and whole general public participated positively in the rule of Japan since. Japan was afraid of a movement in the public because of anti-Japanese sentiment by the Japanese annexation and the dark ages came by instructions of abolition of the each union filed day.

Use of real-time ultrasound imaging for biofeedback of diaphragm motion during normal breathing in healthy subjects

Ji-Eun Cho;Dal-Yeon Hwang:Joohee Hahn;Wan-Hee Lee 물리치료재활과학회 2018 Physical therapy rehabilitation science Vol.7 No.3

Objective: To determine if the provision of visual biofeedback using real-time rehabilitative ultrasound imaging (RUSI) enhances the acquisition and retention of diaphragm muscle recruitment during exercise. Design: Two group pretest posttest design. Methods: Thirty healthy subjects were randomly assigned to the verbal feedback group (VG, n=15) or the visual and verbal feedback group (VVG, n=15). The VG performed breathing exercises 10 times with verbal feedback, and the VVG also performed breathing exercises 10 times with verbal feedback and visual feedback with the use of RUSI to measure changes in diaphragm thickness (DT). For DT, the mid-axillary lines between ribs 8 and 9 on both sides were measured in standing, and then the chest wall was perpendicularly illuminated using a linear transducer with the patients in supine to observe the region between rib 8 and 9 and to obtain 2-dimensional images. DT was measured as the distance between the two parallel lines that appeared bright in the middle of the pleura and the peritoneum. After one week, three repetitions (follow-up session) were performed to confirm retention effects. Intra- and between- group percent changes in diaphragm muscle thickness were assessed. Results: In the VVG, the intervention value had a medium effect size compared to the baseline value, but the follow-up value decreased to a small effect size. In the between-group comparisons, during the intervention session, the VVG showed no significant effect on percent change of DT but had a medium effect size compared to the VG (p=0.050, Cohen’s d=0.764). During the follow-up session, retention effect did not persist (p=0.311, Cohen’s d=0.381). Conclusions: RUSI can be used to provide visual biofeedback and improve performance and retention in the ability to activate the diaphragm muscle in healthy subjects. Future research needs to establish a protocol for respiratory intervention to maintain the effect of diaphragmatic breathing training using RUSI with visual feedback.

유입 혈류의 지속적 차단과 간헐적 차단에 의한 흰쥐 간의 허혈-재관류 손상에 대한 비교연구

조남천,원달연,김명수,조미연,윤갑준,김종석,김익용,김대성,노병선 연세대학교 원주의과대학 2000 원주의대논문집 Vol.13 No.1

Use of real-time ultrasound imaging for biofeedback of diaphragm motion during normal breathing in healthy subjects

Cho, Ji-Eun,Hwang, Dal-Yeon,Hahn, Joohee,Lee, Wan-Hee korean Academy of Physical Therapy Rehabilitation 2018 Physical therapy rehabilitation science Vol.7 No.3

Objective: To determine if the provision of visual biofeedback using real-time rehabilitative ultrasound imaging (RUSI) enhances the acquisition and retention of diaphragm muscle recruitment during exercise. Design: Two group pretest posttest design. Methods: Thirty healthy subjects were randomly assigned to the verbal feedback group (VG, n=15) or the visual and verbal feedback group (VVG, n=15). The VG performed breathing exercises 10 times with verbal feedback, and the VVG also performed breathing exercises 10 times with verbal feedback and visual feedback with the use of RUSI to measure changes in diaphragm thickness (DT). For DT, the mid-axillary lines between ribs 8 and 9 on both sides were measured in standing, and then the chest wall was perpendicularly illuminated using a linear transducer with the patients in supine to observe the region between rib 8 and 9 and to obtain 2-dimensional images. DT was measured as the distance between the two parallel lines that appeared bright in the middle of the pleura and the peritoneum. After one week, three repetitions (follow-up session) were performed to confirm retention effects. Intra- and between- group percent changes in diaphragm muscle thickness were assessed. Results: In the VVG, the intervention value had a medium effect size compared to the baseline value, but the follow-up value decreased to a small effect size. In the between-group comparisons, during the intervention session, the VVG showed no significant effect on percent change of DT but had a medium effect size compared to the VG (p=0.050, Cohen's d=0.764). During the follow-up session, retention effect did not persist (p=0.311, Cohen's d=0.381). Conclusions: RUSI can be used to provide visual biofeedback and improve performance and retention in the ability to activate the diaphragm muscle in healthy subjects. Future research needs to establish a protocol for respiratory intervention to maintain the effect of diaphragmatic breathing training using RUSI with visual feedback.

The Effects of Scaling Factors and Quantization in Sensors on Free Motion of Teleoperation System

Dal-Yeon Hwang,SangKyu-Cho,Hoon Park,Sanguk Park 제어로봇시스템학회 1997 제어로봇시스템학회 국내학술대회 논문집 Vol.1997 No.10

강릉 주문진항 염도, 탁도 및 응존산소 농도 변화양상 분석

조홍연(Cho, Hong-Yeon),김창일(Kim, Chang-Il),이달수(Lee, Dal-Soo),한동준(Han, Dong-Jun) 한국해안해양공학회 2007 한국해안해양공학회 논문집 Vol.19 No.4

주문진항에서 2002년부터 2005년까지 월별로 관측한 일반 수질항목의 정점별, 계절별 변화 양상을 분석하였다. 분석항목은 수온, 염도, pH, SS, DO 항목이다. 일반수질항목의 상층·하층 변화는 뚜렷한 차이를 보이지 않는 것으로 파악되었다. 반면, 계절별 농도변화는 수온 및 DO 농도는 뚜렷한 변화양상을 보였으나, SS 항목 등은 불규칙한 양상을 보이고 있는 것으로 파악되었다. 또한, 지점별, 월별 자료를 영역별, 연도별로 평균하여 해수교환시설 및 하수종말처리시설의 수질개선효과를 정량적으로 분석하였다. 분석 결과, SS농도변화는 하수종말 처리시설 가동에 의한 영향이 매우 미미하게 반영되었으며, 해수교환시설에 의한 영향은 영역 1, 2 각각 26%, 16% 정도의 명확한 농도저감효과를 보이고 있는 것으로 파악되었다. 한편, DO 농도는 하수종말 처리시설 가동 후, 주문진항 내부영역에서 10% 내외로 농도가 저하되는 효과를 보였으나, 해수교환시설 건설 후에는 오히려 10% 내외 증가되는 양상을 보이고, 2005년도 DO 농도는 2002년도에 비하여 변화가 없는 것으로 파악되어 10% 내외의 DO 농도변화는 하수처리장 및 해수순환시설 설치효과로 파악하는 것보다는 자연적인 연변화 범위로 판단하는 것이 적절할 것으로 사료된다. It was analysed that spatial and temporal change patterns of general water quality constituents were measured monthly from 2002 to 2005 in Jumunjin Harbour. The measured constituents are temperature, salinity, pH, SS and DO. Concentration difference of upper lower layer for general water quality constituents was small. Temperature and DO concentration show the clear difference at temporal concentration change pattern, but SS, pH and salinity have irregular change pattern. Also, water quality improvement effect of seawater exchange facilities and sewage treatment plants is analysed quantitatively using averaged spatial and temporal data set. From this result, it is found that effect of sewage treatment plants is small and seawater exchange facilities at zone 1 and 2 is clear concentration reduction effect to be about 26% and 16%, respectively. After sewage treatment plants operation, DO concentration reduced about 10% at inner zone of Jumunjin Harbour, the other side, after seawater exchange facilities concentration DO concentration increased about 10%. DO concentration at 2005 estimated little than that of 2002, it is concluded that a yearly change of DO concentration has about 10%.

교면 포장 및 바닥판 손상 방지를 위한 내부 침투수 처리시스템 개발

조서연(Cho, Seo Yeon),한범성(Han, Bum Sung),이상달(Lee, Sang Dal),이성수(Lee, Sung Soo),이상순(Lee, Sang Soon),이일용(Lee, Il Yong) 한국콘크리트학회 2001 한국콘크리트학회 학술대회 논문집 Vol.2001 No.11

강릉 신리천의 수량 수질 분석 및 오염부하량 추정

조홍연(Cho, Hong Yeon),김창일(Kim, Chang Il),이달수(Lee, Dal Soo) 한국해안해양공학회 2004 한국해안해양공학회 논문집 Vol.16 No.4

강릉 주문진항 입구로 유입되는 신리천 유역의 수질을 2003년 4월 2일부터 10월 29일까지 2주 간격으로 관측하였으며, 미계측 유역의 유량추정에 이용되는 TANK 모형을 이용하여 신리천의 하천수량을 일별로 산정하였다. 관측된 수질자료의 지점별·시기별 변화양상을 분석하였으며, 유역의 강수량과 하천수량과의 상관관계를 분석하였다. 분석결과, 신리하교 지점의 BOD 농도와 강우량과는 상관계수 0.75로 높은 상관성을 보였으며, SS농도와 2일 선행강우량과는 상관계수 0.36으로 약한 상관성을 보였다. COD, TN, TP 항목의 농도는 강수량, 하천유량과는 전혀 상관성이 없는 것으로 파악되었다. 따라서, 본 연구에서 제시한 BOD 항목의 유역 오염부하량은 신뢰할 만한 수준이며, SS 항목의 오염부하량도 정확도가 다소 감소하지만 전체적인 오염부하량 변화양상은 반영하는 것으로 평가되었다. 반면, COD, TN, TP 항목의 유역 오염부하량 추정결과는 평균 오염부하량 수치정도로 활용 할 수 있으나, 시기적인 변화양상을 파악하기 위해서는 인위적인 요소 및 토지이용 양상 등을 고려한 연구가 필요하다. Water qualities (WQ) were measured biweekly from April 2nd to October 29th, 2003 in Sillicheon flowing into the entrance of Jumunjin Harbour and daily water quantities (river discharges) were estimated by the TANK model which has been widely used to compute the runoff discharges in the ungauged watersheds. The spatial and temporal change patterns of the measured WQs were analysed in detail and the correlation between rainfall - WQ and river discharge - WQ were also analysed. From this results, it is found that the correlation coefficient between BOD concentration and rainfall is 0.75 and between the SS concentration and 2-days river discharge is 0.36. The correlation between the COD, TN, TP in the station of Silli Lower Bridge and rainfall runoff quantity was analysed as un-correlated items. As a consequence, the estimated BOD and SS pollutants loads are reliable and show good change patterns even though the accuracy of SS pollutants load is slightly low. The estimated COD, TN and TP pollutants loads, however, can be used only as the reference or averaged values. In order to analyse more accurately the temporal change patterns of these items, more-detailed researches considering the artificial effects and landuse patterns are highly required.

다중 회귀분석 기법을 이용한 해수교환방파제의 도수량 산정

이달수(Dal Soo Lee),오영민(Young Min Oh),조홍연(Hong Yeon Cho),정신택(Shin Taek Jeong) 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10