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Pediatric Home Mechanical Ventilation in Korea: the Present Situation and Future Strategy
박미르,장혜린,설인숙,김수연,김영서,김윤희,손명현,김경원 대한의학회 2019 Journal of Korean medical science Vol.34 No.42
Background: The number of children using home mechanical ventilation (HMV) has increased markedly in Europe and North America, but little is known about the situation in Korea. We described the clinical characteristics of children using HMV and investigated the current situation of HMV utilization in children. Methods: Data on HMV prescriptions in year 2016 for children under the age of 19 was retrieved from the National Health Insurance Service for nationwide information. For more detailed information, data from year 2016 to 2018 was also retrieved from a tertiary center, Severance Children's Hospital. Results: Nationwide, 416 children were prescribed with HMV in 2016, with an estimated prevalence of 4.4 per 100,000 children, of which 64.2% were male and mean age was 6-year- old. The estimated number of patients using invasive ventilators via tracheostomy was 202 (49%). Neuromuscular diseases were the most frequent cause (217; 52%), followed by central nervous system diseases (142; 34%), and cardiopulmonary diseases (57; 14%). In the tertiary center, a total of 62 children were prescribed with HMV (19 [31%] with non-invasive ventilation; 43 [69%] with invasive ventilation]. The number of children with HMV increased from 11 in 2016 to 29 in 2018. The mean age for initiation of HMV was 3.1 years and male patients comprised 65%. The most frequent diagnostic reason for HMV was central nervous system diseases (68%), followed by cardiopulmonary diseases (19%) and neuromuscular diseases (13%). Five patients died during the study period and five patients weaned from HMV. Conclusion: This study provides insights on the present situation of HMV utilization in Korean children.
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고해상도 입체기상관측자료 확보를 위한 기상드론과 고층관측장비의 비교 관측
이승협,박미르,전혜림,박미은 한국기상학회 2021 한국기상학회 학술대회 논문집 Vol.2021 No.10
강원영동 공동 입체기상관측 프로젝트에서는 영동대설과 강풍의 메커니즘을 이해하기 위해 3차원 관측을 수행하고 있다. 그러나 기존의 고층관측장비는 대기최하층 관측자료를 생산하는데 시공간해상도가 낮거나 정확도가 떨어지는 단점이 있다. 이에 따라 이번 연구에서는 기상드론과 고층기상관측장비(레윈존데, 윈드프로파일러, 윈드라이다)의 관측자료를 비교하여 기상드론의 대기최하층(150 m 고도 이하) 관측공백 해소를 통한 고해상도 3차원 관측자료 확보 가능성을 확인하고자 한다. 레윈존데와 윈드프로파일러는 북강릉에서 상시관측했으며, 윈드라이다는 프로젝트 기간 동안 대관령에서 관측하였다. 기상드론은 각 장비에서 30~48 m 떨어진 지점에서 비행했고, 북강릉지점에서는 최대 300 m 고도까지 연직상승 및 하강, 대관령지점에서는 150, 200, 250 m 고도에서 10분간 정지관측하였다. 관측날짜는 바람이 약해 드론 비행에 적합한 2021년 4월 23일, 5월 13일과 영동강풍 특별관측기간에 해당하는 2021년 5월 7일로 총 3일간 총 23회 비교관측을 수행하였다. 기상드론과 레윈존데의 관측결과, 기온과 습도는 200 m 고도에서 각각 1.5℃ 이상, 15% 이상 큰 편차가 나타났다. 풍속은 바람이 강했던 5월 7일 고도에 따라 2 m/s이상의 차이를 보였으나 바람이 약했던 4월 23일에는 지상부터 200 m 고도까지 1 m/s의 편차로 기상측기검정기준을 만족했다. 또한 두 장비의 상관계수(r)는 풍속과 풍향 모두 0.7 이상으로 대기최하층에서 기상드론은 3차원 관측자료 생산에 적합하다고 판단했다. 윈드프로파일러는 기상드론과 r값이 -0.85에서 0.10로 낮았으며, 특히 가장 낮은 고도인 150 m에서 풍속과 풍향의 편차가 각각 4 m/s와 80°로 가장 컸다. 이러한 윈드프로파일러의 대기하층의 부정확성과 150 m 이하의 관측공백은 기상드론으로 대체 가능하다고 생각된다. 윈드라이다와 기상드론의 풍속과 풍향의 평균편차는 각각 1 m/s와 5°이었지만, 시간에 따른 일변동 경향이 유사하고 r값은 0.86으로 높아 기상드론 자료를 통해 윈드라이다 최하층 자료 보정이 가능할 것으로 판단하였다. 이번 연구에서 레윈존데와 비교를 통해 기상드론의 대기하층 3차원 관측자료 생산가능성을 확인했으며, 기상드론과 원격관측장비인 윈드프로파일러와 윈드라이다의 비교에서는 100 150 m 고도이하의 관측공백해소와 연직해상도를 높일 수 있었다.
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1980-2019년 기간 동안 소아청소년 알레르기질환에서 항원 감작의 변화
정재화,김가은,박미르,김수연,김민정,이용주,김윤희,김경원,손명현 대한 소아알레르기 호흡기학회 2021 Allergy Asthma & Respiratory Disease Vol.9 No.4
Purpose: Allergen sensitization is constantly changing, and understanding these changes can help manage and prevent allergic diseases. This research analyzed and compared the changes in allergen sensitization in children diagnosed with allergic diseases using the skin test and the multiple allergen simultaneous test. Methods: We retrospectively analyzed the data on children who were diagnosed with allergic diseases and received immunotherapy at Yonsei Medical Center from 1980 to 1998 and they were screened for allergen sensitization at Severance Hospital from 2005 to 2019. Results: Between 1980 and 1998, and between 2005 and 2019, data on 3,205 (male, 70.3%; mean age, 7.2±2.9 years) and 15,318 children (male, 62.8%; mean age, 8.8±4.5 years) were analyzed. The sensitized allergens that appeared in the 1980–1998 included Dermatophagoides farinae (91.0%), Dermatophagoides pteronyssinus (76.3%), cockroach (13.5%), and Alternaria (11.5%), in order of frequency; further, the sensitized allergens that appeared in the 2005–2019 included D. farinae (45.0%), D. pteronyssinus (39.6%), cat dander (12.2%), and dog dander (9.1%), in order of frequency. D. farinae and D. pteronyssinus demonstrated the highest sensitization rates, although the rates decreased gradually. The sensitization to cat dander and dog dander showed a growing trend, and sensitization to Humulus japonicus, Candida, and cockroach decreased after 2005. Conclusion: Over the past 40 years, the allergen sensitization in Korean children with allergic diseases has increased. These changes reflect lifestyle and environmental changes and influence allergic disease management approaches. Thus, changes in allergic sensitization should be monitored continuously. .
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전혜림,박미은,이승협,박미르,이용희 한국기상학회 2022 大氣 Vol.32 No.4
A drone has recently got attention as an instrument for weather observation in loweratmosphere because it can produce the high spatiotemporal resolution weather data even thoughthe weather phenomenon is inaccessible. Sea fog is a weather phenomenon occurred in loweratmosphere, and has observational limitations because it occurs on the sea. Therefore, goal ofthis study is to analyze the vertical structures about inflow, development and dispersion of seafog using the high-resolution weather data with the meteorological sensor-equipped drone. Thisstudy observed sea fogs in the west coast of the Korean peninsula from March to October 2021and investigated one sea fog inflowed into the coast on June 8th 2021. θe – qv diagrams (θe:equivalent potential temperature, qv: water vapor ratio) and vertical wind structures wereanalyzed. At inflow of sea fog, moist adiabatically stable layer was formed in 0–300 m andprevailing wind was switched from south-southwesterly to west-southwesterly under 120 m. Both changes are favorable for sea fog on the location. θe and qv plummeted in a layer 0–183m. The inflowed sea fog developed from 183 m to 327 m by mixing with ambient atmosphereon top of sea fog. Also, strong mechanical turbulence near ground drove a vertical mixing understable layer. At dispersion of sea fog, as θe on ground gradually increased, air conditionwas changed to neutral. Evaporation occurred on both bottom and top in sea fog. These resultsinduced dissipation of sea fog.
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공공기관의 지방 이전을 전후로 한 수도권의 지역 중심성 변화 연구 : 통근통행 데이터를 이용한 사회 네트워크 분석 중심
이주승(Lee, Juseung),현신명(Hyeon, Shinmyeong),박미르(Park, Mir),이정호(Lee, Jungho),서덕수(Seo, Ducksu) 대한국토·도시계획학회 2022 國土計劃 Vol.57 No.3
The radical centralization of the Seoul metropolitan area led to the imbalance of regional development in South Korea. Hence, the central government strived to mitigate over-centralization to balance regional development by implementing the public agency relocation policy, a strategic relocation of 153 government agencies from the Seoul metropolitan area to local provinces. Since the completion of the massive relocation in 2019, there has been a necessity to evaluate the effect of the policy, particularly in terms of the decentralization of the Seoul metropolitan area. Thus, this study aims to measure the regional centrality by social network analysis with the nationwide commuting data sets for 2007 and 2019. The result indicated that the policy goals and objectives were not achieved in that the Seoul metropolitan area was more centralized in 2019 than in 2007. The top groups of the regional centrality in 2019 are Hwaseong, Gangnam, and Yeongtong areas that showed remarkable economic growth with developing diverse business sectors. Thus, the decentralization policy for balanced regional development should be driven by the relocation of private sectors rather than public sectors. In addition, to mitigate the over-centralization of the Seoul metropolitan area, the properties of previous public agencies in the capital regions require strategic reuse and management for public purposes.
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