국내 우주환경 자료 보유 현황: 자기권

박경선,민경국,한국우주과학회 태양우주환경분과,Park, Kyung Sun,Min, Kyungguk,Division of Solar and Space Environment of KSSS, 한국우주과학회 2021 우주기술과 응용 Vol.1 No.2

국내 태양우주환경 분야에서 널리 이용되는 자료와 모델의 이해와 활용도를 높이고, 세부 분야 간 공동연구의 기회의 장을 마련하고자, 최근 한국우주과학회 태양우주환경분과에서 국내 연구소와 대학을 중심으로 사용되는 태양우주환경 자료와 모델의 보유 및 활용에 대한 조사를 실시했다. 조사 결과를 크게 태양 및 행성간 공간, 자기권, 전리권의 세 분야로 나눠 정리하였고, 본 논문에서는 자기권 분야의 관련 자료와 모델을 소개한다. 자기권 연구의 특성 상 우주공간에서 지점관측을 위한 위성 개발과 운용에 투자가 많이 필요하여 국내 보유 자료는 다른 분야에 비해 상대적으로 적은 편으로 조사됐지만, 국내 지자기관측소를 통한 자기장 변화를 실시간으로 제공하고 있으며, 자기권 모델을 통해 꾸준한 연구를 수행 중이다. 본 논문에서는 자기권 분야 중 국내 위성자료를 이용한 연구들과 제 1원리 물리법칙에 바탕이 된 모델을 대표로 소개한다. 이번 조사 결과와 이를 정리한 논문이 우주과학 관련 자료에 대한 장기적이고 연속적인 관리에 대한 중요성을 인식하며, 우주과학 연구에 참여하는 다양한 인력들이 참조하여 국내에서 생산되고 있는 자료를 활용하여 국내 우주과학 자료의 위상을 높이는데 기여하기를 희망한다. 자료에 대한 조사 내용은 한국우주과학회 홈페이지에서 다운로드할 수 있다(http://ksss.or.kr/). The Solar Space Environment Division of the Korean Society of Space Science (KSSS) has recently conducted a survey among the domestic researchers affiliated with academia, national research institutes, and for-profit institutes of how the data and models in their professional research field are produced, maintained, and utilized. The primary purpose of this survey is to increase the awareness and utilization of the space environment data and models as well as to promote constructive collaborations among the domestic and international researchers. The models and data surveyed are categorized into three sub-fields: the solar and interplanetary space, the (terrestrial) magnetosphere, and the ionosphere and upper atmosphere. The present paper reports the survey results in the "Magnetosphere" category. The survey shows that the domestically produced data in this category are far less than the data produced in other categories. This can be understood in part as follows: Magnetospheric research relies heavily on the in-situ observations but the development and operation of space-hardened satellites require a significant investment. Nevertheless, the recent publications show an increasing trend of research using the data from the ground stations and the recently launched domestic space missions. In the modeling front, there are first-principles physics models covering from the magnetospheric scale to the sub-ion scale and the models geared towards the space weather prediction. The detailed survey results can be accessed from the KSSS website (http://ksss.or.kr/).

대학생에서 알코올 사용으로 인한 블랙아웃의 관련 요인

박관우,김민선,이혜진,박우주,오미경 대한가정의학회 2020 Korean Journal of Family Practice Vol.10 No.3

Background: Irresponsible alcohol consumption by university students in our country continues to increase regardless of the sex; it also causes variousproblems. The blackouts experienced by the students cause social issues, and increased rates of alcohol-based dementia and alcohol use disorder. Therefore, we aimed to investigate the factors related to alcohol-induced blackouts experienced by university students. Methods: We used a structured questionnaire. Overall, 1,325 male and female attending four of the four-year universities in Gangwon-do wereincluded in this study. Their living and drinking conditions, family’s drinking capacity, sleep, depression, anxiety and stress were investigated and therealtionship with the experience of blackout was investigated using the SPSS 24.0 statistical software. Results: Based on the alcohol consumption habits, 360 male (42.3%) and 221 female (46.6%) experienced blackouts. Alcohol use disorder was found inAlcohol Use Disorder Identification Test - Korean revised version (AUDIT-K), 330 male (38.8%) and 265 female (55.9%). We found that the older maleand female, the more they lived alone, the more frequently they drink alcohol in the family, the more they drink, and the more blackout experience,the more frequently they experience blackout (P<0.05). We also showed that the experience of blackout increased statistically significantly with theincrease in difficulty to control alcohol consumption (P<0.05). Regarding the relationship between psychological aspects and blackouts, AUDIT-Kscores and PHQ-9 scores were significantly higher in both male and female when they frequently experienced blackouts (P<0.05). Conclusion: We found that >40% of the university students experienced blackouts; female experienced blackouts more frequently than male. Theblackouts were related to lifestyle, family drinking, problem drinking and depression in both male and female. 연구배경: 우리나라 대학생의 문제성 음주는 남녀에 상관없이 지속적으로 증가하고 있으며 다양하고 심각한 문제를 유발하고 있다. 그일환으로 발생하는 대학생의 블랙아웃은 사회적 문제, 알코올성 치매 발생률 증가, 추후 알코올 사용 장애 발생률 증가 등의 문제를 안고 있다. 따라서 본 연구는 대학생의 블랙아웃의 관련 요인에 대하여 알아보고자 하였다. 방법: 강원도에 소재한 4년제 대학교 중 4곳에 재학 중인 남녀대학생 1,325명을 대상으로 구조화된 설문지를 이용하여 2019년 4월부터 거주형태, 본인의 음주상태, 가족의 음주력, 수면, 우울, 불안, 스트레스 등을 조사하였고 이들과 블랙아웃경험과 연관성을 SPSS24.0 통계 프로그램을 이용하여 분석하였다. 결과: 대학생들의 음주상태를 살펴본 결과 남자 360명(42.3%), 여자221명(46.6%)이 블랙아웃을 경험하였고, 알코올 사용 장애는 AlcoholUse Disorder Identification Test - Korean revised version (AUDIT-K)로살펴본 결과, 남자 330명(38.8%), 여자 265명(55.9%)으로 나타났다. 일반적 특성과 블랙아웃과의 관계를 살펴 본 결과, 남녀 모두에서나이가 들수록, 혼자 자취할수록, 가족 중 술을 가장 많이 마시는사람의 음주빈도, 음주량, 블랙아웃 경험이 많을수록 통계적으로유의하게 블랙아웃을 자주 경험하였다(P<0.05). 음주관련 행위와 블랙아웃 관계를 살펴 본 결과 남녀 모두에서 음주량이 많을수록, 음주를 통제하기 어려울수록, 음주 후 후회감을 느낄수록 통계적으로유의하게 블랙아웃을 자주 경험했다(P<0.05). 심리, 정신적인 면과블랙아웃과의 관계를 살펴본 결과 남녀 모두에서 블랙아웃을 자주경험할수록 AUDIT-K 점수, Patient Health Questionnaire-9 점수가 유의하게 높았다(P<0.05). 결론: 대학생을 대상으로 살펴본 블랙아웃 경험은 남녀 모두에서40% 이상이었으며, 여자가 남자보다 더 경험하였다. 블랙아웃의 관련 요인은 남녀 모두에서 거주형태, 가족의 음주력, 문제음주행동,우울이었다.

슬관절 신전근과 굴곡근의 근력 및 근활성도에 대한 편측 하지의 교차 및 동일 안정화 노력의 효과 비교

박우주(Park Woo-Joo),오덕원(Oh Duck-Won),권정두(Kwon Jung-Du),김병완(Kim Byeong-Wan),김창환(Kim Chang-Whan) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.2

??This study aimed to compare the effect of reciprocal and concurrent stabilization efforts on the strength and muscle activity of the knee extensor and flexor. Twenty-four healthy subjects performed maximally isometric extension and flexion exercises by performing reciprocal and concurrent movements of the legs at 3 knee angles (15°, 45°, and 75°). The Strength and muscle activity of the knee extensor and flexor during the reciprocal movement tended to be significantly higher than those during the concurrent movement(p<.05). In addition, the strength and muscle activity of the knee extensor significantly increased at an angle of 75° and at a flexion angle of 15°, regardless of the reciprocal or concurrent movements of the opposite leg. These findings indicate that reciprocal stabilization exercises are helpful in increasing the effectiveness of strengthening exercises of the knee muscles; the effectiveness of these exercise may depend on the position of the knee joint.

농어촌 생활폐기물의 효율적 처리 및 자원화 방안

박우주(Park Woo-Ju) 조선대학교 지식경영연구원 2003 지역개발연구 Vol.8 No.2

In this study, farm and fishery waste management and transportation was studied to propose better system for handling the waste, and the following results are obtained ㆍ Reduce solid waste : reduce disposable materials and packing materials. ㆍ Recycle the collected materials : increase the recycle ratio through the recycle center, etc. ㆍ Recover energy : recover the energy which has high heat capacity. In order manage the waste efficiently, more detailed and classified approach should be applied to protect our environment as well as save valuable energy. Local and central governments should pay more attention, like advanced countries, to manage nad reuse the waste efficiently.

약물동태학 모형에 대한 변분 베이즈 방법

박선,조성일,이우주,Parka, Sun,Jo, Seongil,Lee, Woojoo 한국통계학회 2021 응용통계연구 Vol.34 No.1

In the following paper we introduce a variational Bayes method that approximates posterior distributions with mean-field method. In particular, we introduce automatic differentiation variation inference (ADVI), which approximates joint posterior distributions using the product of Gaussian distributions after transforming parameters into real coordinate space, and then apply it to pharmacokinetic models that are models for the study of the time course of drug absorption, distribution, metabolism and excretion. We analyze real data sets using ADVI and compare the results with those based on Markov chain Monte Carlo. We implement the algorithms using Stan. 본 논문에서는 평균장 방법(mean-field methods)을 기반으로 사후 분포(posterior distribution)를 근사하는 방법인 변분 베이즈 방법(variational Bayes methods)에 대해 소개한다. 특히, 모수들을 실수공간으로 변환 후의 결합 사후분포를 가우시안 분포(Gaussian distribution)들의 곱(product)으로 근사하는 방법인 자동 미분 변분 추론(automatic differentiation variational inference)방법에 대해 자세히 소개하고, 환자에게 약물을 투여한 후 시간에 따라 약물의 흐름을 파악하는 연구인 약물동태학 모형(pharmacokinetic models)에 적용한다. 소개된 변분 베이즈 방법을 이용하여 자료분석을 실시하고 마코프 체인 몬테 카를로(Markov chain Monte Carlo)방법을 기초로한 자료분석의 결과와 비교한다. 알고리즘의 구현은 Stan을 이용한다.

영동지방 의약분업 예외지역 약국들에서의 감기 증상 모의 환자에 대한 약물 처방 현황

이형철,박우주,오미경 보건의료산업학회 2019 보건의료산업학회지 Vol.13 No.3

Objectives: Korea has been practicing the separation of dispensary from medical practice since 2000 as a national policy to prevent misuse or overuse of medicines. This study aimed to investigate prescription patterns from except pharmacies in order to determine the appropriateness of drug usage among those patients. Methods: Thirty-two pharmacies in the Yeongdong area of Gangwon Province were examined in this study. The same simulated patient complaining of cold symptoms for 3 days visited each pharmacy to obtain a prescription for medication. Results: At pharmacies prescribing medicine, steroids (53.1%) and antibiotics (50.0%) were used to treat the common cold. Duplicate prescriptions of drugs, such as antihistamines (47.0%) and decongestants (31.3%) were common. The average number of drug prescriptions was 6.59, and 53.2% of pharmacies had prescribed more than seven drugs. The average total cost of the prescriptions was 6,093 won, and the daily cost was 2,544 won. Conclusions: Steroids and antibiotics were frequently abused among patients whose medications had been prescribed by pharmacies. Also, there were a considerable number of drugs and duplicate prescriptions. The prices of the drugs were somewhat high.

가구 유형에 따른 대학생의 문제 음주 연관성

이혜진,박관우,김민선,류근영,백송이,박우주,오미경 대한가정의학회 2023 Korean Journal of Family Practice Vol.13 No.3

Background: One person households associated problem drinking is rapidly on the rise, with various issues now emerging. A problem drinking developed at the time of university can result in long-term health implication for individuals. Therefore, this study aimed to investigate the relationship between household type and alcohol drinking pattern in university students. Methods: A total of 1,290 students in four-year universities in Gangneung were enrolled in this study. Household type was categorized as one person household (self-boarding), living with peer group, and living with family or relatives. Alcohol drinking pattern (as measured by the Alcohol Use Disorders Identification Test-Korean revised version, AUDIT-K), sleep, depression, and anxiety were investigated using a structured questionnaire, and their relationship with household type was then analyzed using SPSS 24.0 statistical software. Results: The mean total of AUDIT-K scores was highest in both male (9.58) and female (10.13) self-boarding university students, and the same result was shown after correction for covariates such as sleep, depression, and anxiety (P<0.05). In addition, alcohol use disorder was most frequently found in both male and female self-boarding students (P<0.05). The score for each question in the AUDIT-K questionnaire was highest in both male and female self-boarding students (P<0.05), in particular the score for uncontrolled drinking, alcohol-induced failure, and alcohol-induced blackout. Depression and anxiety were not associated with household type in both male and female students; however, female self-boarding students had a higher rates of sleep problems of having a sleep problem than other female students (P=0.002), whereas male self-boarding students did not. Conclusion: One person household (self-boarding) university students were more likely to experience problem drinking than other student household types.

Immunoglobulin G4 Non-Related Sclerosing Disease with Intracardiac Mass Mimicking Mitral Stenosis: Case Report

황지원,박성지,곽혜빈,하정민,이우주,김은,윤세효,김정선,박양진,김덕경 대한의학회 2013 Journal of Korean medical science Vol.28 No.12

The cardiovascular system may be one of the target organs of both immunoglobulin G4 related and non-related systemic multifocal fibrosclerosis. We present a case of IgG4 non-related systemic multifocal fibrosclerosis mimicking mitral stenosis on echocardiography. For a more detailed differential diagnosis, we used multimodal imaging techniques. After surgical biopsy around the abdominal aortic area in the retroperitoneum, histological examination revealed IgG4 non-related systemic multifocal fibrosclerosis. We describe the multimodal imaging used to diagnose IgG4 non-related systemic multifocal fibrosclerosis and a positive response to steroid treatment. There have been no previous case reports of IgG4 non-related systemic multifocal fibrosclerosis with intracardiac involvement. Here, we report a case of IgG4 non-related systemic multifocal fibrosclerosis mimicking mitral stenosis.

3D 프린터를 활용한 메이커 교육 프로그램 개발 : 나만의 공기청정기 만들기를 중심으로

배선아,박우주 대한공업교육학회 2022 대한공업교육학회지 Vol.47 No.1

The purpose of this study was to develop maker education program utilizing 3D printer based on the topic of ‘making my own Air purifier.’ This study was conducted according to the procedures including preparation stage, development stage, and improvement stage in order to achieve the purpose of this study. In the preparation stage, the requirements for elementary school maker education were analyzed, the teaching and learning model for the maker education was selected, the contents of elementary technology education were analyzed, and the criteria for selecting the topic were drawn. For the development stage, the education program was developed based on the theme selection, the setting of educational objectives, and the selection and composition of learning contents and elements. In the improvement stage, the validity of the program contents was verified by an expert group and the program improvement was made. The results of the study were as follows. First, the maker education program was composed of 20-hours project type education program based on the theme of ‘making my own air purifier’. Second, the developed maker education program consisted of the stages including tinkering, making, sharing, improving, and maker fair, and in detail, it consisted of combined analog and digital maker activities. Third, the selection and use of materials and tools were available according to the student’s level and the possession of IT equipment, and time adjustment for each stage were made possible. In addition to the 3D printer, various analog and digital making activities were available with the use of different materials and tools according to the student’s level. 이 연구는 공기청정기 만들기를 중심으로 3D 프린터를 활용한 메이커 교육 프로그 램을 개발하는데 목적이 있다. 연구의 목적을 달성하기 위해 준비 단계, 개발 단계, 개선 단계의 절차에 따라 연구를 수행하였다. 준비 단계에서는 초등학교 메이커 교육 에 대한 요구 분석, 메이커 교육 교수․학습 모형 선정, 초등 기술교육 내용 분석을 통 해 예비 주제를 선정하였다. 개발 단계에서는 최종 주제 선정, 교육목표 설정, 학습내 용 요소 선정 및 조직을 바탕으로 교육 프로그램을 개발하였다. 개선 단계에서는 전 문가 집단으로부터 내용 타당도를 검증받고, 프로그램을 개선하였다. 연구 결과는 다음과 같다. 첫째, ‘공기청정기 만들기’의 주제를 중심으로 총 20차시의 메이커 교육 프로그램을 개발하였다. 둘째, 개발된 메이커 교육 프로그램은 팅커링하기, 만들기, 공유하기, 개선 하기, 메이커 페어의 단계로 구성되었으며, 아날로그와 디지털이 융합된 메이커 활동 으로 구성되었다. 셋째, 학생 수준, IT 기자재 보유 정도에 따라 재료와 도구의 선택과 활용이 가능하고, 단계별 시간 조정이 가능하도록 하였다. 3D 프린터 외에도 다양한 재료와 도구를 활용하여 학생의 수준에 따라 다양한 디지털 메이킹과 아날로그 메이킹이 가능하도록 하였다.

선박 AIS 데이터 기반의 머신러닝 알고리즘을 활용한 입항패턴 군집에 관한 연구

이준혁,박진솔,이승훈,최모겸,김학찬,손우주,조익순 해양환경안전학회 2023 해양환경안전학회 학술발표대회 논문집 Vol.2023 No.11