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The Outcome of Thoracentesis versus Pigtail catheter for Hepatic Hydrothorax
( Seul Ki Han ),( Seong Hee Kang ),( Moon Young Kim ),( Bon Il Park ),( Baek Gyu Jun ),( Tae Suk Kim ),( Dae Hee Choi ),( Ki Tae Suk ),( Young Don Kim ),( Gab Jin Cheon ),( Dong Joon Kim ),( Soon Koo 대한간학회 2020 춘·추계 학술대회 (KASL) Vol.2020 No.1
Aims: Hepatic hydrothorax (HH) is a rare complication and associated with poor clinical outcome in patients with cirrhosis. Conservative management for HH includes salt restriction and administration of diuretics, often with percutaneous drainage; thoracentesis, catheter drainage, and chest tube drainage. Therapeutic thoracentesis is a simple that can provide rapid relief of symptoms though it is temporary and repeated. We aimed to evaluate the efficacy and safety the use of pigtail catheters insertion compared to intermittent thoracentesis. Methods: This multicenter retrospective study included 136 cirrhotic patients with pleural fluid from March 2012 to June 2017. Cirrhosis patients with transudate pleural effusion greater than 500ml are included, other neoplasm and cardiopulmonary disease and infectious condition were excluded. Results: There were 115 cases of pigtail catheter insertion and 25 cases of intermittent thoracentesis. The mean MELD scores of the enrolled patients were 19.71 ± 7.85 and 21.57 ±8.39, respectively (P=0.32). The median catheter dwelling time was 8 days in pigtail catheter group. Spontaneous pleurodesis was occurred in 59 cases (51%) in pigtail group. Bleeding complica tion and empyema were occurred in pigtail group. The median hospitalization period was 19 day in pigtail group and 31 day in thoracentesis group (P=0.83). The overall 1-year mortality for patients treated with pigtail catheter insertion versus thoracentesis was 40.9% (n=47) and 71.4% (n=15), respectively. There was no difference in survival rate between pigtail catheter group and thoracentesis group (P=0.19). Re-admission rate for 1 year did not differ between pigtail catheter insertion group and thoracentesis group (50.1% vs. 37%, P=0.38). Conclusions: Pigtail catheter insertion can safely obviate the need for repeated thoracentesis and may be recommended for management of hepatic hydrothorax.
Application of the Time Derivative (TD) Method for Early Alert of Influenza Epidemics
Kang Seul-Ki,Son Woo-Sik,Kim Bryan Inho 대한의학회 2024 Journal of Korean medical science Vol.39 No.4
Background: In order to minimize the spread of seasonal influenza epidemic to communities worldwide, the Korea Disease Control and Prevention Agency has issued an influenza epidemic alert using the influenza epidemic threshold formula based on the results of the influenza-like illness (ILI) rate. However, unusual changes have occurred in the pattern of respiratory infectious diseases, including seasonal influenza, after the coronavirus disease 2019 (COVID-19) pandemic. As a result, the importance of detecting the onset of an epidemic earlier than the existing epidemic alert system is increasing. Accordingly, in this study, the Time Derivative (TD) method was suggested as a supplementary approach to the existing influenza alert system for the early detection of seasonal influenza epidemics. Methods: The usefulness of the TD method as an early epidemic alert system was evaluated by applying the ILI rate for each week during past seasons when seasonal influenza epidemics occurred, ranging from the 2013–2014 season to the 2022–2023 season to compare it with the issued time of the actual influenza epidemic alert. Results: As a result of applying the TD method, except for the two seasons (2020–2021 season and 2021–2022 season) that had no influenza epidemic, an influenza early epidemic alert was suggested during the remaining seasons, excluding the 2017–2018 and 2022–2023 seasons. Conclusion: The TD method is a time series analysis that enables early epidemic alert in real-time without relying on past epidemic information. It can be considered as an alternative approach when it is challenging to set an epidemic threshold based on past period information. This situation may arise when there has been a change in the typical seasonal epidemic pattern of various respiratory viruses, including influenza, following the COVID-19 pandemic.
Device-to-Device 기반의 이동통신 서비스 비즈니스 모델
오슬기(Seul-ki Oh),류승완(Seung-wan Ryu),박애순(Ae-soon Park),강숙양(Sook-yang Kang),김이강(Yi-kang Kim) 대한전자공학회 2011 대한전자공학회 학술대회 Vol.2011 No.12
본현재의 이동통신은 스마트폰 및 태블릿 PC 등 진화된 스마트 단말기의 등장과 이러한 기기들에 의해 제공되는 다양한 멀티미디어 콘텐츠 서비스로 인해 무선 트래픽의 폭발적 증가 추세를 보이고 있다. 또한, 휴대폰 보급률이 100%에 이르면서 이동통신 시장은 더 이상의 성장이 어려운 포화 상태를 보이고 있으며, 이로 인해 이동통신 관련 사업자들 즉, 플랫폼 사업자, 콘텐츠 제공 사업자, 네트워크 사업자, 단말기 사업자들의 수익성은 정체되거나 악화되고 있다. 따라서, 폭증하는 이동통신 트래픽 수요를 수용하면서 멀티미디어 콘텐츠 서비스 등 다양한 신규 이동통신서비스를 수용하면서 정체되어있는 이동통신서비스의 수익성 제고를 기할 수 있는 이동통신 기술 및 서비스의 발굴이 필요한 실정이다. 본 연구에서는 국내 이동통신 시장의 환경 변화에 따른 모바일 산업의 전반적인 흐름을 가치사슬(Value Chain) 관점에서 분석하고 해결방안을 제시하고자 한다. 또한 폭증하는 무선 트래픽 수요를 수용하면서 새로운 서비스 제공을 통해 이동통신서비스의 수익성을 제고할 수 있는 방안의 하나로서 단말기 간 직접통신(Device-to-Device(D2D)) 기술 기반의 새로운 이동통신서비스 비즈니스 모델을 제안한다.
디자인협동조합 운영의 성공요인에 관한 연구 -국내외 사업자협동조합 사례 중심으로-
강슬기 ( Kang Seul Ki ),변상태 ( Byun Sang Tae ) 한국기초조형학회 2016 기초조형학연구 Vol.17 No.6
본 연구는 디자인협동조합에 필요한 성공 요인을 분석함으로 국내 환경에 맞는 디자인협동조합 사업 모델 연구를 진행하며, 이와 더불어 디자인협동조합 운영에 관심을 두고 있는 개인 또는 소상공인들에게 학문적, 이상적인 내용이 아닌 현실에도 적용이 가능하도록 도움을 주고자 하는 데 그 목적이 있다. 1)연구를 위하여 선행적으로 협동조합의 정의와 국내외 디자인 및 사업자협동조합의 배경을 문헌연구로 진행하였다. 2)디자인 협동조합의 기본적인 형태인 사업자협동조합의 성공과 발전 가능성 요인 자료를 토대로 재구성하여 주 카테고리인 `조합원의 유대관계`와 `사업모델 확보 및 재구성`을 구분할 수 있었다. 3)디자인협동조합의 특징을 알아보기 위해 성공 요인 지수를 기반으로 4가지 유형 매트릭스를 분류하고 적용하였다. 4)해외의 사례의 경우 동일하지 않지만 유사한 성공 요인인 `교육 및 지역사회 연계 사업`, `변화에 대한 적극성`, `법 제도 및 정부 조직 활용`, `조합원 유대관계`, `일자리 창출`을 기반으로 다양한 사업 확장 및 균형 잡힌 운영을 하고 있음을 알 수 있었다. 5)국내 디자인협동조합들의 경우 조합원의 유대관계 또는 이해관계를 위한 충분한 제도적 장치나 교육에 대해서 사업 모델 구상보다는 소홀하다는 공통점을 알 수 있었다. 6)또한, 조합원의 역량은 곧 지속적인 사업 모델의 제고나 재구성에 영향을 줄 수 있음을 확인하였다. 본 연구로부터 향후 심층적인 사례 선별 기준으로 국내 환경에서 적합한 디자인협동조합 운영 모델 사례 또는 사업 모델 개발을 위한 동종 디자인협동조합 사례 분석을 통해 연구를 보다 정확성과 객관성을 갖출 수 있을 것으로 기대한다. This study focuses on analyzing the successful factors needed for design cooperative association. It researches a sustainable business model for domestic environment and also suggests realistic directions for individuals or small business owners who are interested in managing design cooperatives. 1)This research was conducted by the definition of a business cooperative as well as studying the background of domestic and international cooperatives literature studies. 2)Based on the success factors and development possibilities of a business cooperative, which is a basic form of design cooperative, it can be recategorized by `relationships of its members` and `forming and reforming its business model`. 3)To find out the key features of the design cooperative, this research classified a matrix system for four different types, based on its success index. 4)Although international cooperatives do not have a identical case example, the success factors were similar which was `education and community linkage projects`, `willingness to change`, `leveraging government organizations and legal systems`, `strong relationship among cooperative members`, `creating more jobs`. Which all of these factors were well balanced which eventually lead to cooperative business expansion. 5)It can be also pointed out that, compare to it`s adequate business model plans, importance of an institutional strategy and education for relationships and interests of the cooperative members were neglected in domestic design cooperatives. 6)In addition, this research confirms that the capabilities of the cooperative members affects the increase or the reconstruction of a continuous business model. With this study, it can be a start of an in-depth case analysis with accuracy and objectivity for management model of design cooperative association in domestic environment and also for a business model development for conspecific design cooperative association.
초음파 영상을 이용한 흡기근 강화 운동과 유산소 운동이 비활동적 성인의 호흡기능에 미치는 영향
강슬기(Seul-Ki Kang),박지혜(Ji-Hye Park),이수연(Su-Yeon Lee),이슬인(Seul-In Lee),최단(Dan Choe),정찬주(Chan-Joo Jeong),강효정(Hyo-jeong Kang),유영대(Young-Dae Yoo) 대한심장호흡물리치료학회 2019 대한심장호흡물리치료학회지 Vol.7 No.1
Purpose : The purpose of this study was to investigate the effects of inspiratory muscle training and aerobic exercise on respiratory function in sedentary adults. Methods : This study was performed on 19 subjects. They were divided into two groups; inspiratory muscle training with ultrasound image(n=10), aerobic exercise(n=9). Both of group performed the exercise 3 times a week for 4weeks. The data was analyzed by the wilcoxon test to compare before and after significant difference of factors on each groups and the mann-whitney test to compare two groups. Results : The results were as follows. There was statistically no significant difference on FVC, FEV1, VC, IC between the groups(p<.05). Conclusion : As a result of this study, it seems that inspiratory muscle training with ultrasound image might be effective like aerobic exercise for sedentary adults.