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Chronic Placental Inflammation as a Risk Factor of Severe Retinopathy of Prematurity
김채영,정의석,김은나,김종재,이주용,황지혜,송우선,이병섭,Ellen Ai-Rhan Kim,김기수 대한병리학회 2018 Journal of Pathology and Translational Medicine Vol.52 No.5
Background: Chronic placental inflammation (CPI) has been implicated in the pathogenesis of diseases in premature infants, whereas retinopathy of prematurity (ROP) is a major complication primarily affecting preterm and very low-birth-weight (VLBW) infants. This study aims to investigate the association between CPI and ROP in VLBW infants. Methods: We performed a retrospective review of clinical records of VLBW infants born between 2013 and 2016. Placental pathology findings including CPI cases were analyzed using logistic regression to study infants’ morbidities and other clinical characteristics. Results: A total of 402 infants with a mean (standard deviation) gestational age of 28.5 (2.8) weeks and birth weight of 1,027.2 (304.4) g were included. The incidence of ROP was 24.1%. CPI was found in 90 infants (22.4%), among which 28.9% (26 of 90) developed ROP, and 21.1% (19 of 90) underwent laser photocoagulation. Lower gestational age, lower birth weight, longer duration of oxygen supply, and presence of CPI were associated with the development of ROP. After adjustment for gestational age, birth weight, sex, duration of oxygen supply, and other overlapping placental pathology, CPI was associated with the odds for type 1 ROP that required laser photocoagulation (adjusted odds ratio, 2.739; 95% confidence interval, 1.112 to 6.749; p = .029). Conclusions: CPI was associated with severe ROP requiring treatment with laser photocoagulation in VLBW infants.
소출력 무선기기의 방사에 노출된 AMPS 수신기의 상호변조 간섭 예측
김채영(Che-Young Kim),김당오(Dang-Oh Kim) 한국통신학회 2008 韓國通信學會論文誌 Vol.33 No.12A
본 논문에서는 AMPS 수신기에게 전파 간섭을 야기시킬 소출력 무선기기의 방사 전계강도를 예측하였다. 제시된 전계 강도 수치는 상호변조 간섭을 일으키지 않을 방사량의 상한치가 되며, 그 수치는 79.13[㏈㎶/m] 이었다. 이 상한치의 타당성을 보이고자 상호변조에 근거된 이론 제시, AMPS 수신기의 모델링, 및 해당 IC에 대한 측정을 수행하였다. 그 결과 삼자 간의 수치들은 허용된 범위 내에서 잘 일치됨을 확인할 수 있었다. In this paper, we predicted the radiation field strength from the low power radio devices to force the radio interference on the AMPS receiver. The predicted value of 79.13[㏈㎶/m] is the upper value of radiation against the intermodulation interference emanated from the low power radio devices. To show the validity of the suggested values theoretical analysis on intermodulation and modeling of the AMPS receiver are performed, and also measurements on the AMPS receiver IC are carried out. The resultant numerals show the good match between them within the allowable tolerances.
유아교육 애플리케이션의 인터랙티브 컨텐츠 활용사례 연구 - 몬테소리 브랜드를 중심으로 -
김채영 ( Kim Chae-young ),김성훈 ( Kim Sung-hoon ) 커뮤니케이션디자인학회(구 시각디자인학회) 2021 커뮤니케이션 디자인학연구 Vol.75 No.-
오늘날의 유아들은 가장 어린 나이에 휴대폰과 테블릿 PC 등 스마트 기기를 마주하는 세대이다. 유아의 스마트 기기 사용이 증가하고, 부모의 자녀 학업 부담이 늘어가는 현실에서 유아 교육을 보다 효과적으로 유인하기 위해서는 인터랙티브 컨텐츠를 활용해야하며, 따라서 본 연구에서는 인터랙티브 컨텐츠를 활용한 유아 교육 애플리케이션을 선정한 후 번슈미트(Bernd H. Schmitt)의 전략적 체험 모듈을 바탕으로 분석하여 유아교육 애플리케이션에서의 인터랙티브 컨텐츠 활용이 유아의 교육에 미치는 영향과 개선 방안을 살펴보았다. 일차적으로 이론적 고찰과 선행연구를 통해 인터랙티브 미디어와 유아교육의 개념 및 유아의 특징, 번슈미트(Bernd H. Schmitt)의 전략적 체험 모듈을 살펴보았으며, 이를 통해 연구에 적용할 체험이론의 5가지 구성 요소 중 감각적 경험(시각-색상,형태,텍스트/청각-효과음,배경음), 감성적 경험(즐거움/성취감), 인지적 경험(개념이해/사고/문제해결) 3가지 유형의 세부 분석 요소를 도출하였다. 도출된 요소를 바탕으로 설문지를 작성하여 유아교육 종사자(어린이집·유치원교사) 30명에게 설문조사를 했으며, 설문조사 결과와 유아교육 애플리케이션의 인터랙티브 컨텐츠 활용 사례 분석 결과는 다음과 같다. 첫째, 현재 유아교육 애플리케이션의 인터랙티브 컨텐츠는 감각적 경험을 중심으로 이루어지고 있음을 알 수 있었다. 둘째, 유아의 효과적인 학습을 위한 경험으로는 감성적 경험(감정)이 중요하다는 것을 알 수 있었다. 셋째, 인터랙티브 컨텐츠의 상호작용성을 활용한 유아교육 애플리케이션의 활발한 개발이 필요한 상황임을 알 수 있었다. 따라서 현재 인터랙티브 컨텐츠를 활용한 유아교육 애플리케이션을 사용함으로써 유아의 흥미 유발을 통해 미디어와 상호작용성을 높여 유아 교육을 효과적으로 달성할 수 있도록 다양한 기술 분야와 디자인 활성화 방안에 대한 지속적인 연구가 이루어져야 할 것이다. Early childhood of these days is the generation to face smart devices such as mobile phones and tablet PCs at their earliest age. Under the reality of increasing in smart device use and also of increasing in parents' burden of their children studies, it is essential to use interactive contents for the more effective attraction of early childhood education, Therefore, after selected the applications for early childhood education making use of interactive contents, this study analyzed it based on the strategic experiential modules by Bernd H. Schmitt to look into the impact of the utilization of interactive contents in the applications for early childhood education on the early childhood with the improvement plans. At first, this study looked into interactive media, the concepts of early childhood education, the features of early childhood, and the strategic experiential modules of Bernd H. Schmitt through theoretical consideration and prior research, by which it was able to derive the three types of detailed analysis elements such as sensory experiences (visual-color, shape, text/auditory sense-sound effect, background sound), emotional experiences (pleasure/sense of accomplishment), and cognitive experiences (understanding of concept/thinking/problem solving out of the five elements in the experiential theory to be applied to this study. Based on the elements derived, this study circulated a questionnaire of the 30 workers who are engaged in early childhood education (teachers at nursery schools & kindergartens) to conduct a survey, and the results of this survey and the analysis on the use of interactive contents in applications for early childhood education are as follows. First, it was found that the current interactive contents in applications for early childhood education are made around sensory experiences. Second, it was found that emotional experiences (feeling) are important as the experiences for effective learning of early childhood. Third, it was found that active development of applications for early childhood education making use of the interactions of interactive contents is necessary. Therefore, it is believed that continuous researches should be made on various technical fields and plans for design activation for effective achievement of early childhood education by increasing interactions with the media through the inducement of interest from early childhood while using applications for early childhood education making use of the current interactive contents.