지금 서울신학대학교에서는 : 성결가족 모두에게 감사를 드립니다

정성필 기독교대한성결교회 활천사 2000 활천 Vol.562 No.-

응급의학과 인턴 의사의 업무 및 소요 시간 분석: 다기관 단면 연구

정성필,유제성,김민정,윤영훈,홍대영,윤유상,조준호,이경우,강준호,이경원,전병조,류지호,김승환,이장영,임훈,김수진 대한응급의학회 2014 大韓應急醫學會誌 Vol.25 No.3

Purpose: This study was conducted in order to describe howintern physicians in the emergency department (ED) spenttheir time, and the frequency of tasks performed by them. Methods: This was an observational, time-motion study for 15intern physicians in 15 emergency centers. Observers in eachhospital shadowed interns for a 60-minute period, two times,both day and night shift. They recorded time spent on variousactivities, type and number of activities. The proportion of activitythat can be replaced by other staff members was calculated. Results: Average number of duty hours of interns was 80.9hours (63~87.8) per week. A total of 662 activities wereobserved during 30 hours. Interns’ activities were classifiedas direct patient care 28.2%, personal time 24.2%, documentation17.0%, procedures 16.7%, communication 8.1%,transportation 2.6%, indirect patient care 2.0%, learningactivity 0.8%, and administrative work 0.4%. The proportionof procedural task showed negative correlation with thenumber of emergency medical technicians (r=-0.710,p=0.003). The proportion of activity that can be replaced bystaff members other than doctors was 24.3% (0~47%) oftime, except personal or learning activity. Conclusion: Results of this study showed that only 24.3%of interns’ activity in the emergency department could bereplaced by staff members other than doctors. Because theproportion of activities that could be replaced was variableamong hospitals, each hospital should perform task analysisof interns’ activity in order to forecast alternative manpower.

PREDICTION OF VEHICLE ENGINE OIL VISCOSITY USING OBDII SIGNAL

정성필,유덕현 한국자동차공학회 2023 International journal of automotive technology Vol.24 No.2

This study presents a method for predicting the viscosity of engine oil by using information on the amount of increase in coolant temperature and outside temperature that can be measured in OBDII of automobiles. In every driving distance of 3000 ~ 5000 km, the amount of coolant temperature rise over time was measured through the OBDII output terminal in the environmental chamber, and the time for the coolant temperature to reach a specific value was defined as the coolant characteristic value. After measuring the actual vehicle, engine oil was extracted and the viscosity was measured to analyze the correlation between the coolant temperature rise and the viscosity. The coolant characteristics measured at a mileage of 10,137 km show similar levels of 78.6 % of the initial value and 74.3 % of the initial value of engine oil, coolant characteristic value and engine oil viscosity show a close relationship. Through engineering analysis, a mathematical formula and ANN model that can predict the engine oil viscosity value according to the change in coolant characteristics and outside temperature was proposed.

농구동호인의 참여 동기가 자아존중감 및 심리적 행복감에 미치는 영향

정성필,오현준 한국스포츠학회 2018 한국스포츠학회지 Vol.16 No.3

이 연구는 생활체육 농구동회에서 활동하는 회원들의 참여 동기가 자아존중감과 심리적 행복감에 미치는 영향에 대하여 알아보고자 2014년 202명의 호남지역의 농구동호회 남자회원을 모집단으로 설정하여 자료를 최종 분석하여 다음과 같은 결론을 얻었다. 첫째, 개인적 특성에 따른 차이에서 참여동기는 기술발달 요인에서 연령에 30대가 높았고, 심리적 행복감은 자신감 요인에서 미혼이 기혼 보다 높게 나타났다. 둘째, 참여정도에 따른 차이를 보면, 참여기간에서 기술발달요인, 참여빈도에서는 컨디션요인 그리고 참여시간에서는 즐거움 요인에서 유의한 차이가 나타났다. 셋째, 참 여 동기가 자아존중감에 미치는 영향에서 사교요인이 자아존중감에 긍정적 영향을 미쳤다. 참여 동기가 심리적 행복감 에 미치는 영향에서 건강/체력 요인이 집중력에, 사교와 기술발달 요인은 자신감에, 사교 요인은 자아도취와 즐거움에 긍정적 영향을 미쳤다. 결론적으로, 농구동호인의 참여 동기가 자아존중감 및 심리적 행복감에 긍정적인 영향을 미치는 것으로 나타났으며, 참여활동을 통해 신체적 건강과 다른 사람의 유대관계를 통한 자아존중감 및 심리적 행복감에도 영향을 미친다. The purpose of this study was to find out the effect of sports participation motivation on self-esteem and psychological happiness of male basketball club members. Total 202 questionnaires were collected from the basketball clubs in the southwestern region of Korea in 2014. First, the skill improvement showed high in 30's in the sub-scales of participation motivation and psychological happiness showed high in single group. Second, in analyzing by participation scales, it showed signigicant difference in skill improvement in participation period, condition in the frequency of participation and pleasure in participation time. Third, in analyzing the effects of participation motivation on self-esteem, the sociality affected positive influence on self-esteem. In analyzing the effects of participation motivation on psychological happiness, the concentration showed high in health/physical strength, confidence in sociality and skill improvement, and self- complacence and pleasure on sociality, respectively. As a result, it revealed that sports participation motivation of male basketball club members partially affects positive influence on self-esteem and psychological happiness.

지금 서울신학대학교에서는 : 농촌봉사활동을 통해 얻은 것

정성필 기독교대한성결교회 활천사 2000 활천 Vol.561 No.-

현장 : 지금 서울신학대학교에서는 ; 새 천년에는 ( 활천사 , 활천 통권 제 554 호 , 2000 . 1 )

정성필 기독교대한성결교회 활천사 2000 활천 Vol.554 No.-

태양에너지 기반 물 생산과 담수화 기술 사례 분석 및 제언

정성필 적정기술학회 2023 적정기술학회지(Journal of Appropriate Technology) Vol.9 No.2

Because global water scarcity is expected, the water shortage will occur significantly for the developing countries and vulnerable social group. It is expected that alternative water resource will be required to provide sustainable surface water supply for the areas where water infra-structure such as Dam is limited against the unexpected climate change. Groundwater which is the one of the main water sources for the developing countries is sometimes facing contaminations by heavy metals and salts from geological reason and seawater intrusion, respectively. In order to remove the contaminants, the decentralized and off-grid type ion separation technology is required. In this study, solar-power based water treatment and desalination case studies and theoretical study for solar energy were presented. Moreover, suggestions of water supply methods for developing countries and vulnerable social group were also showed considering the field conditions based on the case studies. 전세계적으로 물이 부족하게 될 것으로 예상되고 있으며 , 그 피해는 상대적으로 소득이 낮은 개발도상국과 저소득층에서 크게 발생할 수 있을 것으로 예측되고 있다 . 급격한 기후 변동으로 빗물 기원의 담수 수자원들은 댐과 같은 이미구축된 거대 인프라가 없는 경우 , 안정적인 물 공급이 점점 어려워지고 있어 , 대체 수자원에 대한 수요가 증대될 것으로 판단된다 . 개발도상국에서 주로 수자원으로 활용하고 있는 지하수의 경우 지질학적 원인이나 해수침투로 인하여 중금속 또는 염분 오염이 발생하고 있다 . 이를 대응하기 위한 이온 분리 기술이 요구되고 있으며 , off-grid로 운영이 가능한 분산형 담수화 시스템이 개발되고 있다 . 이 연구에서는 태양에너지에 대한 이론적 이해를 바탕으로 , 기존에 수행된 태양에너지 기반 수처리 및 담수화 시스템 사례를 들어 그 특징을 소개하고자 한다 . 또한 , 실제 현지 설치 사례를바탕으로 현장에서 물 공급 방안을 선택하거나 추진할 때 고려해야 할 사항 등을 바탕으로 개발도상국 또는 저소득 지역에 대한 물 공급 방안에 대한 제안을 하고자 한다 .

적정기술학회지의 출판된 논문 전체(2015-2022년)에 대한 계량서지적 분석 연구 - 키워드 분석을 바탕으로 -

정성필 적정기술학회 2023 적정기술학회지(Journal of Appropriate Technology) Vol.9 No.2

Because appropriate technology (AT) is mainly focusing on the technologies and methods for developing countries and vulnerable social group, the purpose of the AT could be providing water-energy-food infrastructure and education opportunity. The journal of appropriate technology (JAT) is the professional journal on AT and has been published since 2015. In this study, the bibliometric analysis based on the keyword analysis was conducted to understand research trends for various research topics. The keywords were collected from all the published JAT papers and analyzed according to publication year and order of appearance. As the results, the variation for the number of keywords according to the publication year was evaluated and research trends on the various AT topics were confirmed. The research areas in keywords were relatively prior to the methods and targets in keywords in the order of appearance. If huge data base could be collected by the help of AI (artificial intelligence), it is worth to mention that the keywords analysis of this study could be also used to other research topics. 적정기술 분야는 개발도상국 또는 사회적 약자 계층에 적용될 수 있는 기술과 방법론을 주로 다루는 학문 분야로서 , 각종 물-에너지 -식량 인프라 , 교육 기회 등을 제공하는 데 그 목적이 있다고 할 수 있다 . 적정기술학회지는 적정기술분야를 다루는 전문 학술지로서 2015년부터 발간되었다 . 이 연구에서는 적정기술학회지의 다양한 연구 분야를 빠르게파악하고 연구 동향을 이해하기 위하여 계량서지적 분석 방법 중 키워드 분석을 적용하였다 . 전체 대상 논문에 대하여 키워드를 확보하였으며 , 키워드를 연도별 , 키워드 작성 순서별로 정리하여 분석하였다 . 그 결과 , 연도별 키워드를 바탕으로 게재 논문 수의 변화를 유추할 수 있었으며 , 분야별 연구 동향 파악이 가능하였다 . 또한 , 키워드 작성 순서에있어서 , 연구주제가 상대적으로 앞쪽에 그 상세 내용인 연구방법론과 연구대상이 후순위로 작성되어 있음을 확인할 수있었다 . 향후 AI 기반의 대규모 자료 확보 기술이 보완되는 경우 , 타 분야 키워드 분석에도 활용될 수 있을 것으로 판단된다 .

유기인산염 살충제 중독의 해독제:atropine과 pralidoxime

정성필,노형근 대한의사협회 2013 대한의사협회지 Vol.56 No.12

Acute organophosphate (OP) poisoning produces cholinergic symptoms resulting from the inhibition of cholinesterase, and the overstimulation of muscarinic and nicotinic receptors in the synapses. The dominant clinical features of acute cholinergic toxicity include bradycardia,miosis, lacrimation, salivation, bronchorrhea, and bronchospasm. All symptomatic patients should receive therapy with oxygen, atropine, and pralidoxime. Atropine works as a physiologic antidote by competitively occupying muscarinic receptor sites, reducing the effects of excessive acetylcholine. Atropine should be immediately administered, and the dose can be titrated according to the severity of OP poisoning. A large dose may be necessary to overcome the excessive cholinergic state in case of severe poisoning. Pralidoxime is a biochemical antidote that reactivates acetylcholinesterase by removing OP from it. It is effective in treating both muscarinic and nicotinic symptoms. After some period of time, the acetylcholinesterase-OP compound undergoes a conformational change, known as aging, which renders the enzyme irreversibly resistant to reactivation by a pralidoxime. There has been a great deal of controversy over the effectiveness of pralidoxime in acute OP poisoning. However, it may be beneficial to administer pralidoxime for a sufficient period in case of severe poisoning with a large quantity of OP,which is common in Korea.

초등학교 1,050학급에게 시행된 개인 마네킹을 이용한 심폐소생술 교육 효과

정성필,김민정,임훈,오동진,이한식,조준호 대한응급의학회 2010 대한응급의학회지 Vol.21 No.3

Purpose: This study was designed to evaluate the educational effects of cardiopulmonary resuscitation (CPR)instruction to elementary school children and the perspectives of students and teachers about such instruction. Methods: A total of 34,232 5th and 6th grade students from 998 elementary schools were instructed using a two-hour CPR lesson from each school teacher using CPR Anytime. The school teachers also were instructed by the same lesson from BLS instructors. Survey questionnaires were distributed to students involved. CPR skills were tested using a checklist during the class. We calculated the multiply effect that how many people were instructed CPR secondarily by student after the lesson and analyzed results by grade and gender. Results: Most students (82%) said that CPR was easy to learn; 81% indicated a willingness to do CPR on a stranger. CPR skills were tested in 11,529 students (34%), and 10,269(89%) passed. Assessment of respiration was the most commonly omitted procedure. The multiply effect was 1.54, and was higher in the 5th grade and among girls. Conclusion: This study suggests that the CPR instruction to 5th or 6th grade students in an elementary school setting is feasible and effective. Although the quality of instruction may be low, the children performed CPR on their family and friends.