다중 도메인 IoT 환경에서 블록체인 기반 접근제어 토큰 보안 강화를 위한 시스템

서아영(Ahyoung Seo),허가빈(Gabin Heo),도인실(Inshil Doh) 한국통신학회 2024 한국통신학회 학술대회논문집 Vol.2024 No.1

유공형 판으로 보강된 플랫 플레이트 뚫림전단의 위험단면에 대한 규준 비교

서아영 ( Seo A Young ),조은선 ( Jo Eunsun ),이영학 ( Lee Young Hak ) 한국구조물진단유지관리공학회 2015 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.19 No.1

입원 환아 보호자의 돌봄부담, 불안, 영성, 가족관계가 우울에 미치는 영향

서아영(Seo, Ahyoung),김석선(Kim, Suk-Sun) 기본간호학회 2021 기본간호학회지 Vol.28 No.3

Purpose: The purposes of this study were to examine the associations among caregiver burden, anxiety, spirituality, family relationship and depression and to determine predictors of depression among caregivers of hospitalized children. Methods: The participants were 128 caregivers of hospitalized children. Data were collected through self-report questionnaires and analyzed using descriptive statistics, independent t-test, one-way ANOVA, Pearson’s correlation coefficient and multiple regression analysis with SPSS ver. 27. Results: Depression was significantly positively associated with caregiver burden, anxiety and negatively associated with family relationships. Multiple regression analysis revealed that caregiver burden, anxiety, family relationship, and being 6 months or more post diagnosis were significant factors having an explanation power of approximately 56% of the variance in depression. Conclusion: Our study findings show that it is necessary to develop strategies to reinforce family relationship and reduce caregiver burden to prevent caregiver depression.

가새부재에서의 국부좌굴로 인한 파단 예측

서아영(Seo Ah-Young),문기훈(Moon Ki-Hoon),한상환(Han Sang-Whan) 대한건축학회 2010 大韓建築學會論文集 : 構造系 Vol.26 No.12

For evaluating accurately the seismic performance of braced frame, it is necessary that analytical models represent similarly the hysteretic behavior and the fracture of braces in experiment. To simulate the hysteresis curve of braces, this study utilizes the physical theory model suggested by the previous researcher. Furthermore, this study developed the damage index by introducing the refined fatigue parameters to predict the fracture generated by local buckling in various bracing member. In the damage index, the damage is cumulated using the fatigue parameter calibrated from not member test but fatigue test. As a result, the refined fatigue parameters reflecting the effect of local buckling can be determined by regression analysis according to the width-thickness ratio. Through the comparison of the experimental and analytical results to verify the analytical model with the refined fatigue parameters, it is revealed that the fracture model proposed by this study predicts well the time fracture occurs in test results than that of previous studies.

초등 과학 협동학습에서 유화성을 고려한 소집단 구성의 효과

강석진,서아영,권혁순,Kang, Suk-Jin,Seo, A-Young,Kwon, Hyeok-Soon 대한화학회 2007 대한화학회지 Vol.51 No.3

이 연구에서는 협동학습에서 학생의 유화성 수준을 고려한 집단 구성이 초등학교 6학년 학생들의 과 학 성취도, 자아효능감, 과학 학습 동기에 미치는 영향을 조사했다. 1개 초등학교의 6학년 3개 학급 학생 72명 을 학급 단위로 통제 집단과 처치 집단으로 임의 배정했다. 사전 검사로 유화성 검사, 자아효능감 검사, 과학 학 습 동기 검사를 실시했다. 처치 집단의 학생들은 유화성 수준에 따라 동질 혹은 이질적으로 소집단을 편성한 후, 협동학습 전략에 따라 수업을 실시했다. 반면, 통제 집단 학생들은 임의로 소집단을 편성한 후, 전통적인 방 식으로 수업을 실시했다. 협동학습 처치는 5주(16차시) 동안 실시했다. 수업 처치가 끝난 후, 성취도, 자아효능 감, 과학 학습 동기 검사를 실시했다. 연구 결과, 이질 집단과 동질 집단의 성취도 검사 점수가 통제 집단에 비 해 유의미하게 높았지만, 유화성 수준에 따른 집단 구성은 성취도에 영향을 주지 않았다. 자아효능감과 과학 학 습 동기 검사에서는 수업 처치에 따른 차이가 나타나지 않았다. In this study, we investigated the effects of grouping with respect to the level of students' agreeableness on 6th graders' science achievement, self-efficacy, and science learning motivation in cooperative learning. Three classes (72 students) from an elementary school were randomly assigned to a control group and treatment groups. An agreeableness test, self-efficacy test, and science learning motivation test were administered as pretests. The students of the treatment groups were grouped either homogeneously or heterogeneously on the basis of their agreeableness levels and were taught with a cooperative learning strategy, whereas the students of the control group were randomly grouped and were taught with a traditional method. The cooperative learning intervention lasted for 5 weeks (16 class periods). After the instructions, tests regarding achievement, self-efficacy, and science learning motivation were administered as posttests. The results indicated that the students of the homogeneous and/or the heterogeneous groups significantly outperformed those of the control group in the achievement test. However, students' achievement was not influenced by the grouping method on the basis of students' agreeableness. No significantly differences among the groups were found in the self-efficacy and science learning motivation.

광개시제, 올리고머 그리고 Talc 함량에 따른 아크릴계 코팅제의 UV경화 및 박리특성

양지우 ( Jee Woo Yang ),서아영 ( Ah Young Seo ),이철우 ( Chul Woo Lee ) 한국공업화학회 2013 공업화학 Vol.24 No.5

As the usuage of tempered glass for touch panel increased rapidly with the development of industry, the amount of UV curable coating solution used to protect glass surfaces during a tempered glass manufacturing process increased as well. The UV curable coating has advantages compared to thermal curing such as shortened curing time and non-solvent. Appropriated polymer and monomer were used as an acid polymer to grant an alkali peeling ability. The monomers were 2-hydroxyl methylacrylate, 1,6-hexanediol diacrylate and dipentaerythritol hexaacrylate which have acryl groups of 1, 2, and 6, respectively. The combination of three different types of photoinhibitors were used and bisphenol A epoxy diacrylate was used as an oligomer. In this study, experiments were carried out by controlling the amount of photoinitiator, oligomer, and additive while maintaining the constant content of the acid polymer and the acrylic monomer. The changes in physical properties according to the additive content were investigated. It was found that the combination of photoinitiators was necessary to achieve the hardness above 4H and it was possible to control the delamination type of the coating film from a sheet to pieces by the addition of TPO as an initiator. The increase in oligomer contents increased the hardness and adhesiveness alongside dissection time. Talc content of 20 wt% showed the best results.

WUF-W 접합부의 반복 하중 실험을 통한 회전성능 평가

문기훈(Moon Ki-Hoon),서아영(Seo Ah-Young),한상환(Han Sang-Whan) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)

The propose of this study is to evaluate the rotation capacity of Welded Unreinforced Flange-Welded web moment connections detailed in compliance with ANSI/AISC 358. In this study, four full-scale one-sided test specimens were made and quasi-static cyclic testing was conducted. The variables of test specimens are the effects of beam depth and strength ratio between beam and panel zone on plastic rotation capacity of WUF-W moment connection. From the test results, it was found that test specimens having deep beam fractured in the beam flange before achieving total interstory drift angle of 0.04 radian required for Special Moment Frames system in ANSI/AISC-341, while shallow beam specimens performed well, achieving total interstory drift angle of at least 0.04 radians.

한국어판 종교성 및 영적경험 측정도구의 타당도와 신뢰도 검증

김석선 ( Kim Suk-sun ),김다은 ( Kim Daeun ),문난영 ( Moon Nan Young ),서아영 ( Seo Ahyoung ),길민지 ( Gil Minji ) 한국간호과학회 정신간호학회(구 대한간호학회정신간호학회) 2021 정신간호학회지 Vol.30 No.2

Purpose: The purpose of this study was to translate Duke University Religion Index (DUREL) and the Daily Spiritual Experience Scale (DSES) into Korean and test the validity and reliability of the instruments. Methods: Korean version of DUREL and DSES were translated and back-translated by 6 bilingual experts and group discussions. Data analyses were performed using SPSS 26.0 and AMOS 22.0. Both exploratory and confirmatory factor analyses were conducted with two data sets of secondary analysis study to examine the factor structure and construct validity. Correlations with other variables were used to test validity and reliability. Results: For K-DUREL, the final evaluation yielded two factors with 5 items: intrinsic religiosity and institutional religious activity. K-DSES had two factors with 16 items: transpersonal spiritual experience, and interpersonal & environmental spiritual experience. Cronbach’s α of K-DUREL and K-DSES were .67 and .96, respectively. Both instruments showed good reliability and validity for the translated Korean versions. Conclusion: Applying K-DUREL and K-DSES in theory-based research may contribute to knowledge about the religious activity and spiritual experiences in the health and well-being of a Korean. Also, two instruments have the potential to measure changes in religion and spirituality after spiritual or holistic nursing interventions.

감염 ; 대구 지역 급성 Q열의 임상적 특징

이경숙 ( Kyoung Suk Lee ),최영실 ( Young Sill Choi ),권기태 ( Ki Tae Kwon ),이미정 ( Mi Jung Lee ),서아영 ( A Young Seo ),이신원 ( Shin Won Lee ),한승우 ( Seoung Woo Han ),김건우 ( Gun Woo Kim ),김현수 ( Hyun Soo Kim ),박창근 ( Ch 대한내과학회 2010 대한내과학회지 Vol.79 No.4

목적: 저자들은 Q열 환자 13명을 진단하고 치료하였으며, 국내에서 아직까지 증례 보고 이외에 Q열의 임상양상에 대한 연구는 없는 실정으로 저자들이 경험한 증례들의 임상적 특징을 분석해 보았다. 방법: 2006년 1월부터 2008년 8월까지 대구광역시지역 3개 종합병원에서 진단하고 치료한 급성 Q열 환자 13명을 대상으로 임상적 특성에 대한 후향적 조사를 환자들의 의무기록을 바탕으로 시행하였다. 미세간접면역형광항체법(indirect micro-immunofluorescence assay)에서 anti-phase II IgM 항체가가 1:50 이상이고, anti-phase II IgG 항체가가 1:200 이상인 경우 급성 Q열로 진단하였으며, 추가적으로 C. burnetii의 27-kDa 외막단백(outer membrane protein, OMP) com1유전자(438 bp)에 대한 중합효소 연쇄반응(polymerase chain reaction, PCR)을 시행하였다. 결과: 연구기간 동안에 급성 Q열로 진단된 환자는 총 13명이었다. 11명(84.6%)이 남성이었고, 2명(16.4%)이 여성이었으며, 환자들의 평균 나이는 49세(24~76)였다. 감염 경로를 추정해 볼 수 있는 환자는 모두 7명(53.8%)으로, 개 또는 고양이와 접촉한 환자가 3명(23%), 소와 접촉한 경우가 2명(15.3%), 사슴피를 섭취한 경우가 1명(7.7%), 낙동강 둑에서 쓰레기 줍기를 한 경우가 1명(7.7%)이었다. 모든 환자에서 발열이 있었으며, 두 번째로 흔한 임상증상인 근육통이 11명(84.6%)이었고, 두통, 식욕감퇴, 오한이 각각 8명(61.5%)씩 있었으며, 쇠약감과 복통이 각각 7명(53.8%)씩 있었다. 흉부X-선 검사에서 폐렴이 의심되는 환자는 없었다. 발열을 동반하는 간염이 주요 임상소견이었다. 특히 총 빌리루빈이 8mg/dL이 넘는 심한 고빌리루빈혈증을 나타낸 환자가 3명(23%)이 있었다. 모든 환자에서 위의 진단기준을 만족하고, 중합효소 연쇄반응에서 양성이었다. 3명(23%)에서 간 조직검사를 시행하였으며, 섬유고리 육아종(fibrin-ring granuloma)이 관찰되었다. 7명(53.8%)에서는 항균제 투여 전에 해열이 되었다. 투여된 항균제로는 doxycycline이 11명(84.6%), azithromycin이 1명(7.6%)이었으며, 1명(7.6%)은 항균제가 투여되지 않았다. 결론: 대구광역시지역에서 원인 불명의 발열과 간염을 동반한 환자에서는 Q열에 대한 혈청학적인 검사를 시행하고, 환자의 상태가 위중한 경우에는 경험적으로 doxycycline을 투여하는 것을 고려하여야 하겠다. Background/Aims: Although only a few sporadic cases of Q fever have been reported in Korea, a total of 13 cases have been seen in our area. We performed this study to evaluate the clinical characteristics of these cases of acute Q fever. Methods: Demographic features, clinical manifestations, laboratory and radiologic findings, and therapeutic outcomes of all cases were evaluated. Q fever was diagnosed using an indirect micro-immunofluorescence assay (MIFA) and polymerase chain reaction (PCR). Results: A total of 13 patients with acute Q fever seen from January 2006 to August 2008 at three teaching hospitals in the Daegu Metropolitan City area were enrolled. The mean age was 49 years old (range, 24~76), and the male to female ratio was 11:2. Six (46.2%) cases had a history of animal contact. Fever (100%) was the most common manifestation, followed by myalgia (84.6%), headache (61.5%), anorexia (61.5%), and chills (61.5%). All cases were diagnosed with high titers of anti-phase II antibody (IgM≥1:50, IgG≥1:200) and positive nested PCR for the 27-kDa OMP com-1 gene of Coxiella burnettii in the blood. In three cases, liver biopsies revealed the presence of compact fibrin-ring granulomas. No characteristics of pneumonia were diagnosed on chest X-rays. The predominant presentation was acute febrile illness with hepatitis, including three cases (27.3%) of severe cholestatic hepatitis. The most frequently used antimicrobial agent was doxycycline (84.6%), followed by azithromycin (7.7%). Conclusions: Acute Q fever may be added to the list of differential diagnosis of patients with acute febrile illness and hepatitis in the Daegu Metropolitan City area. (Korean J Med 79:404-411, 2010)

복부 팽만 환자에서 리팍시민의 임상적 효과

윤기철 ( Kichul Yoon ),김나영 ( Nayoung Kim ),이주엽 ( Ju Yup Lee ),오동현 ( Dong Hyun Oh ),서아영 ( A Young Seo ),윤창용 ( Chang Yong Yun ),윤혁 ( Hyuk Yoon ),신철민 ( Cheol Min Shin ),박영수 ( Young Soo Park ),이동호 ( Dong Ho 대한소화기학회 2018 대한소화기학회지 Vol.72 No.3

Background/Aims: Abdominal bloating is a troublesome complaint due to insufficient understanding of the pathophysiology. The aim of this study was to evaluate the efficacy of rifaximin in reducing bloating associated with functional gastrointestinal disorders (FGIDs). Methods: A total of 63 patients were treated with rifaximin for FGIDs with bloating or gas-related symptoms between 2007 and 2013 at Seoul National University Bundang Hospital. Rifaximin was administered at a dose between 800 mg/day and 1,200 mg/day for 5 to 14 days. The proportion of patients who had adequate relief of global FGID symptoms and FGID-related bloating was retrospectively assessed. The response was recorded when the symptoms were reduced by at least 50% at the follow-up after treatment cessation. Results: The mean age was 56.8±14.2 years; 49.2% were females. According to Rome III criteria, 20.6% (13/63) had irritable bowel syndrome (IBS) with constipation, 9.5% (6/63) had IBS with diarrhea, 4.8% (3/63) had mixed IBS, 23.8% (15/63) had functional dyspepsia, and 12.7% (8/63) had functional bloating. Of the 51 subjects who were followed-up, 30 (58.8%) had adequate relief of global FGID symptoms and 26 (51.0%) experienced improvement of abdominal bloating after rifaximin treatment. The proportion of female was slightly higher in non-response group than in the response group (60.0% vs. 34.6%, p=0.069). Otherwise, there was no difference between the two groups. Conclusions: Despite the limitations of this retrospective study, our data confirms that rifaximin may be beneficial for abdominal bloating. Further prospective clinical trial with a larger cohort is needed. (Korean J Gastroenterol 2018;72:121-127)