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응급실에 내원한 어지럼 환자에서 급여 기준 변화가 뇌 MRI 이용 빈도에 미치는 영향
최시온,변준섭,최수복,김총명,하철민,이형주,정영윤 대한응급의학회 2023 대한응급의학회지 Vol.34 No.3
Objective: This study examined whether the changes in reimbursement coverage of brain magnetic resonance image (MRI) affected practice for patients who visited the emergency department with dizziness as the chief complaint. Methods: Among the 5,423 patients who visited the emergency department for dizziness in 2017, 2019, and 2021, 4,497 patients were included in the study retrospectively and investigated by brain diffusion-weighted MRI and the presence of cerebral infarction on brain diffusion-weighted MRI. This study examined whether there was a significant difference before and after the change. Results: In 2017, 2019, and 2021, 1,489, 1,570, and 1,438 patients with dizziness visited the emergency department, respectively. The number of patients who underwent a brain MRI scan gradually increased from 237 (15.9%) in 2017 to 628 (40.0%) in 2019 and 948 (65.9%) in 2021 (P<0.001). The number of positive findings on brain MRI scan increased gradually from 30 patients (2.0%) in 2017 to 47 patients (3.0%) in 2019 and 53 patients (3.7%) in 2021 (P=0.025). The ratio of positive findings of brain MRI scans to the number of patients who underwent brain MRI scans decreased gradually to 12.7% in 2017, 7.5% in 2019, and 5.6% in 2021 (P=0.001). Conclusion: The changes in the reimbursement coverage of brain MRI affect the number of brain MRI scans and the detection of cerebral infarction.
이예림(Yerim Lee),최시온(Sion Choi),윤성민(Sungmin Yun),조유진(Yujin Cho),이지현(Jihyun Lee),서수종(Sujong Seo),정지연(Jiyeon Jeong),정혜선(Heisawn Jeong) 한국HCI학회 2020 한국HCI학회 학술대회 Vol.2020 No.2
본 연구는 프랜차이즈 매장의 무인주문결제 키오스크(kiosk)의 사용자 경험을 현장관찰과 인터뷰를 통해 분석하여 사용자의 불편함을 살펴보고, 그에 대한 문제점을 도출하였다. 각 매장마다의 불편함이 다양하여 개개인 맞춤 시스템의 개선이 시급하다는 연구결과를 바탕으로 개선방안을 제시한 뒤 끝으로 향후과제에 대해 논의하였다.
대학생의 인터넷중독 및 스마트폰 중독 정도와 미술 치료 인식에 대한 조사 연구
박혜원,송승윤,윤하영,이경현,이소영,이지원,진예은,최시온,허은서,황다빈,신주현,이인영 이화여자대학교 간호학회 2018 이화간호학회지 Vol.- No.52
Purpose: Investigate the level of Internet and smart phone addiction of college students and difference of their perception on the art therapy. Method: Data was collected using 4 categories of questionnaires. Participants of this study were 383 college students who are currently attending universities located in seoul, Kyung-Ki and Incheon. The Chi-square test, One-way Analysis of Variance, Scheffé test were performed using IBM SPSS Statistics 23.0 Result: First, the study has established that the status of attending universities, grade, people who living with, age affected the level of Internet addiction of college students. In terms of the level of smart phone addiction of college students, the status of attending universities, gender, age were the affective factors. Second, there was a significant difference on the perception of the advantages of the art therapy and the level of acknowledging it, depending on the level of Internet addiction. Finally, depending on the level of smartphone addiction, there was a significant difference in the level of perception of the art therapy, expectation toward the art therapy and the helpfulness of art therapy. The more the participants are close to the addicted level, the more they want to experience the art therapy. Conclusion: These results suggest. First, it is necessary to use bigger group of participants. Second, it is necessary to improve the research methods for college students. Third, nurse should offer holistic care toward the patients regarding their general characteristics by adapting this study. Finally, it is necessary to improve the art therapy programs for the college students who are addicted to the Internet and smartphone and to develop researches proving the effectiveness of these programs.
박광성(Kwang-Sung Park),안상진(Sang-jin Ahn),조경록(Kyeong-Rok Cho),최시온(Si-On Choi),박용욱(Yong-Wook Park) 한국전자통신학회 2017 한국전자통신학회 논문지 Vol.12 No.4
본 연구에서는 요람을 기존의 리모컨이나 수동으로 구동하는 방식과 달리 APP을 통하여 사람의 음성을 인식하면 모터로 동작하도록 요람을 제작하였다. 또한 요람에 온습도센서를 장착하여 실시간으로 요람의 온도와습도를 LCD를 통해서 확인할 수 있고, 또한 소리크기에 따라 결과 값을 가지는 사운드센서를 이용하여 결과값을 a, b, c로 지정하여 이 결과 값의 합이 1150을 넘으면 아기의 울음소리로 인식하여 APP에 알림표시와 알림음이 작동하도록 하는 기능을 가지는 요람을 제작하였다. In this study, existing remote control or the cradle manually drives to recognize the voice of the way and through the app the Cradle to work with a motor. In addition, the temperature and humidity sensor was mounted in the cradle, the temperature and humidity of the cradle can be checked through the LCD. Depending on the sound size of the sound sensor, the resulting value was used to indicate a value of a, b, c, and the sum of the results over 1150, the cradle was recognized as the baby s crying, then, notificate and alarm on app.
Thrichoderma atroviride 배양액의 tyrosinase 억제제에 관한 연구
강동우(Dong Woo Kang),김규민(Kyu-Min Kim),김예성(Ye-Seong Kim),서유진(Yu-Jin Seo),송다영(Da-Yeong Song),오다윤(Da-Yun Oh),최시온(Si-On Choi),황주현(Ju-Hyeon Hwang),김삼웅(Sam Woong Kim),방규호(Kyu Ho Bang),갈상완(Sang Wan Gal) 한국생명과학회 2021 생명과학회지 Vol.31 No.1
현대인에게 미백화장품은 미를 나타내는 중요한 요소이다. 균류는 미백에 연관된 다양한 물질대사산물을 생산한다. 본 연구에서 미백기능성 화장품에 소재를 탐색하기 위해 Trichoderma atroviride 배양액에 물질대사산물에 의한 tyrosinase inhibitors를 조사하였다. 또한, 억제 효과는 식의약안전처에 미백화장품 원료로 승인된 알부틴과 비교하였다. T. atroviride 배양액에 물질대사산물은 알부틴의 활성보다 높은 tyrosinase 억제 활성을 보였다. T. atroviride 배양액에 포함된 tyrosinase inhibitors 중 일부는 열에 안정한 반면에, 일부는 열에 불안정하였다. 본 물질들은 약산성~중성 pH 영역에서는 안정하였지만, 그 외 영역에서는 매우 불안정하였다. Proteinase K에 의해 활성 영향이 거의 없었기 때문에 inhibitor들은 대부분 물질대사산물로 구성된 것으로 추정된다. 따라서 본 T. atroviride 배양액에 물질대사산물은 미백화장품 소재로써 잠재적 가치가 있는 것으로 제의된다. In today’s society, functional whitening cosmetics are important to beauty. Fungi are known to produce a variety of whitening-related metabolites. In this study, we searched for tyrosinase inhibitors with metabolic products derived from Trichoderma atroviride supernatant in order to apply a material for whitening functional cosmetics. In addition, the inhibitory effect was compared to arbutin, which has already been approved as a whitening raw material by the Korea Ministry of Food and Drug Safety (KMFDS). The metabolites from the T. atroviride supernatant showed higher tyrosinase inhibitory activity than that of arbutin. Some of the tyrosinase inhibitors were stable to heat, whereas some were unstable. The heat unstable material was exhibited in the case of samples treated with little amounts, such as 0.02~0.2%. They were very unstable in acidic and alkali pHs, especially under acidic conditions. However, it was found that a weakly-acidic to neutral pH range was the optimal working pH, especially neutral pH. Since the activity of the inhibitory substances in the T. atroviride supernatant was maintained regardless of proteinase K treatment, it was assumed that the metabolites, but not the bioactive peptides, were involved in the activity. In summary, we propose that the metabolites derived from T. atroviride supernatant have strong potential as whitening raw material.