Feeding Habits of Chub Mackerel (Scomber japonicus) in Coastal Waters of Korea

A Reum Ko,Yang-Jae Im,Junghwa Choi,Jung Nyun Kim,Joon-Taek Yoo,Jae Mook Jeong,Gun Wook Baeck 한국수산해양기술학회(구 한국어업기술학회) 2018 한국수산해양기술학회 학술발표대회 Vol.2018 No.11

특별한 그녀들과의 특별한 간담회

고아름(KO A REUM) 대한토목학회 2008 대한토목학회지 Vol.56 No.8

주의력 결핍 과잉행동 장애 아동의 간접 화행 이해 특성

이아름(A Reum Lee),황민아(Min A Hwang),고선희(Sun Hee Ko) 단국대학교 특수교육연구소 2020 특수교육논총 Vol.36 No.1

연구목적: 화용 능력은 다양한 상황에서 문맥을 적절하게 이해하고 그에 맞게 대처하는 사회적인 능력으로 의사소통에 있어 핵심적인 역할을 하게 된다. ADHD 아동들은 화용적인 측면의 문제로 의사소통에 어려움을 보이는 것으로 알려져 있기에 이들의 간접 화행 이해 특성을 알아보고자 하였다. 연구방법: 초등학교 1-2학년 ADHD 아동 13명과 일반 아동 13명을 대상으로 간접 화행 이해 과제를 실시하였다. ADHD 아동들과 일반 아동들 간 간접 화행 이해에 차이가 있는지를 알아보기 위하여 독립표본 t-검정을 실시하였으며, 더불어 아동들의 간접 화행 이해 과정에서 나타난 오류에 대해 유형 분석을 실시하였다. 연구결과: ADHD 아동들은 일반 아동들에 비해 간접 화행을 이해하는 데 유의미하게 저조함을 보였으며, 간접 화행에 대한 이해를 촉진하였을 때 그 수행이 향상되었다. 그러나 여전히 일반 아동들에 비해 오류가 많았고, 간접 화행을 문자 그대로의 의미로 해석하려는 경향을 보였다. 결론: ADHD 아동들은 두드러진 언어 결함이 없는 것으로 확인 되더라도 화용 능력이 요구되는 의사소통 상황에서 맥락을 활용하여 상대방의 의도를 파악하는 데 어려움을 겪는 것으로 보이며, 이것이 이들의 의사소통의 문제를 야기하는 원인이 될 수 있겠다. Purpose: Pragmatic ability is the skill to understand contexts in various situations and cope with them accordingly, which plays a key role in communication. Since ADHD children are known to have pragmatic problems, this study examined their comprehension of indirect speech acts. Method: 13 children with ADHD and 13 typical children in 1 to 2 grade carried out the indirect speech act task. The t-test was conducted to confirm if there were differences in performance between ADHD and typical children. Also, the errors made by children in this task were analyzed based on the error type. Result: ADHD children showed significantly lower performance in the comprehension of indirect speech acts than typical children. When promoting their understanding of indirect speech acts, their performance improved. However, there were still more errors than typical children and they tended to interpret the indirect speech acts as literal meaning. Conclusion: ADHD children had difficulty in identifying other"s intentions by using contexts in communicative situations that pragmatic ability is required, even though they have no prominent language deficit. This would be the reason of their communication problems.

겨울철 ESSAY (Experiment on Snow Storms At Yeongdong) 기간 동안 수증기량과 강수량의 연관성 분석

고아름(A-Reum Ko),김병곤(Byung-Gon Kim),은승희(Seung-Hee Eun),박영산(Young-San Park),최병철(Byoung-Choel Choi) 한국기상학회 2016 대기 Vol.26 No.1

인공증우(설) 항공실험 분석 : 2019년 국제공동연구를 대상으로

구정모(Ku, Jung Mo),고아름(Ko, A-Reum),채상희(Chae, Sanghee),황현준(Hwang, Hyun Jun),노용훈(Ro, Yonghun),정운선(Jung, Woonseon) 한국방재학회 2020 한국방재학회논문집 Vol.20 No.6

본 연구에서는 항공기를 이용하여 수행된 인공증우(설) 국제공동연구(International Joint Cloud Observation and Weather Control Experiment 2019, IJCO-WCE 2019) 사례를 레이더 자료, 지상관측소 자료, 수치 모의 자료, 항공 관측 자료를 이용하여 인공증우(설) 효과를 분석하였다. 시딩 물질의 확산을 수치 모의한 결과, 시딩 물질은 항공기로 관측된 풍향과 일치한 방향으로 확산한것으로 나타났다. 항공기 관측자료를 분석한 결과에서는 구름 입자의 평균수농도와 강수 입자가 시딩 중보다 시딩 후에증가한 것을 확인할 수 있었다. 구름 입자 측정기(Cloud Droplet Probe, CDP)로 관측된 구름의 평균수농도는 시딩 중보다시딩 후에 약 59% 증가하였고, 구름 영상 측정기(Cloud Imaging Probe, CIP)로 관측된 구름의 평균수농도는 약 82% 증가하였다. 아울러 강수 입자 측정기(Precipitation Imaging Probe, PIP)로 관측된 강수 입자는 시딩 중에는 거의 관측되지 않았지만 시딩후에 관측됐다. In this study, an international joint cloud seeding experiment (International Joint Cloud Observation and Weather Control Experiment 2019, IJCO-WCE 2019) by aircraft was analyzed using numerical simulations, ground observation data, and aircraft observation data. As a result of numerical simulations, it was found that the seeding material was diffused in a direction consistent with the wind direction observed by the aircraft. Further, aircraft observation data showed an increase in average water concentration of clouds and precipitation particles after seeding rather than during seeding. The average water concentration of clouds observed by the Cloud Droplet Probe (CDP) increased by about 59% after seeding than during seeding, and that observed by the Cloud Imaging Probe (CIP) increased by about 82%. In addition, precipitation particles observed by the Precipitation Imaging Probe (PIP) were hardly noticed during seeding, but appeared after seeding.

Investigation of CO₂ leak accident in SFR coupled with S-CO₂ Brayton cycle

Jung, Hwa-Young,Kim, Min Seok,Ko, A-Reum,Lee, Jeong Ik Elsevier 2017 Annals of nuclear energy Vol.103 No.-

<P><B>Abstract</B></P> <P>Various research organizations have performed feasibility studies for applying the supercritical CO<SUB>2</SUB> (S-CO<SUB>2</SUB>) Brayton cycle to the Sodium-cooled Fast Reactor (SFR) system and the studies revealed several technical challenges. The preceding studies are reviewed to identify the current status of overcoming the identified challenges and highlight knowledge gaps. One of the most challenging issues is to comprehend the CO<SUB>2</SUB> leak mechanism initiated from the pressure boundary failure in a Na-CO<SUB>2</SUB> heat exchanger. Thus, an isentropic critical flow model expanding from supercritical phase to gas phase was evaluated. To validate the selected critical flow model, an experiment of CO<SUB>2</SUB> critical flow under supercritical condition was performed and the experimental and numerical results correspond to each other reasonably. Another identified technical issue is removing Na-CO<SUB>2</SUB> reaction product from the system to improve the system economics and plant availability. In this study, candidates that can form eutectic with Na-CO<SUB>2</SUB> reaction product was newly identified. As a result, it was found that Li<SUB>2</SUB>CO<SUB>3</SUB>-Na<SUB>2</SUB>CO<SUB>3</SUB> or Li<SUB>2</SUB>CO<SUB>3</SUB>-Na<SUB>2</SUB>CO<SUB>3</SUB>-K<SUB>2</SUB>CO<SUB>3</SUB> eutectic systems can act as a potential cleaning agent to eliminate Na-CO<SUB>2</SUB> reaction product within the operating temperature range of SFR. The performance was confirmed with simple experiments.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Previous studies on Na-CO<SUB>2</SUB> reaction are reviewed and limitations are identified. </LI> <LI> An isentropic critical flow model for CO<SUB>2</SUB> at supercritical phase is evaluated. </LI> <LI> An experiment is conducted to validate the critical flow model under S-CO<SUB>2</SUB> condition. </LI> <LI> Potential candidates to remove Na-CO<SUB>2</SUB> reaction product are identified. </LI> </UL> </P>

Unenhanced Breast MRI With Diffusion-Weighted Imaging for Breast Cancer Detection: Effects of Training on Performance and Agreement of Subspecialty Radiologists

Kim Yeon Soo,Lee Su Hyun,Kim Soo-Yeon,Kim Eun Sil,Park Ah Reum,Chang Jung Min,Park Vivian Youngjean,Yoon Jung Hyun,Kang Bong Joo,Yun Bo La,Kim Tae Hee,Ko Eun Sook,Chu A Jung,Kim Jin You,Youn Inyoung,C 대한영상의학회 2024 Korean Journal of Radiology Vol.25 No.1

Objective: To investigate whether reader training improves the performance and agreement of radiologists in interpreting unenhanced breast magnetic resonance imaging (MRI) scans using diffusion-weighted imaging (DWI). Materials and Methods: A study of 96 breasts (35 cancers, 24 benign, and 37 negative) in 48 asymptomatic women was performed between June 2019 and October 2020. High-resolution DWI with b-values of 0, 800, and 1200 sec/mm2 was performed using a 3.0-T system. Sixteen breast radiologists independently reviewed the DWI, apparent diffusion coefficient maps, and T1-weighted MRI scans and recorded the Breast Imaging Reporting and Data System (BI-RADS) category for each breast. After a 2-h training session and a 5-month washout period, they re-evaluated the BI-RADS categories. A BI-RADS category of 4 (lesions with at least two suspicious criteria) or 5 (more than two suspicious criteria) was considered positive. The per-breast diagnostic performance of each reader was compared between the first and second reviews. Inter-reader agreement was evaluated using a multi-rater κ analysis and intraclass correlation coefficient (ICC). Results: Before training, the mean sensitivity, specificity, and accuracy of the 16 readers were 70.7% (95% confidence interval [CI]: 59.4–79.9), 90.8% (95% CI: 85.6–94.2), and 83.5% (95% CI: 78.6–87.4), respectively. After training, significant improvements in specificity (95.2%; 95% CI: 90.8–97.5; P = 0.001) and accuracy (85.9%; 95% CI: 80.9–89.8; P = 0.01) were observed, but no difference in sensitivity (69.8%; 95% CI: 58.1–79.4; P = 0.58) was observed. Regarding inter-diffusionreader agreement, the κ values were 0.57 (95% CI: 0.52–0.63) before training and 0.68 (95% CI: 0.62–0.74) after training, with a difference of 0.11 (95% CI: 0.02–0.18; P = 0.01). The ICC was 0.73 (95% CI: 0.69–0.74) before training and 0.79 (95% CI: 0.76–0.80) after training (P = 0.002). Conclusion: Brief reader training improved the performance and agreement of interpretations by breast radiologists using unenhanced MRI with DWI.

Association between the simultaneous decrease in the levels of soluble vascular cell adhesion molecule-1 and S100 protein and good neurological outcomes in cardiac arrest survivors

Min Jung Kim,김태균,서길준,권운용,Kyung Su Kim,Yoon Sun Jung,Jung-In Ko,Somi Shin,A Reum Lee 대한응급의학회 2018 Clinical and Experimental Emergency Medicine Vol.5 No.4

Objective This study aimed to determine whether simultaneous decreases in the serum levels of cell adhesion molecules (intracellular cell adhesion molecule-1 [ICAM-1], vascular cell adhesion molecule-1 [VCAM-1], and E-selectin) and S100 proteins within the first 24 hours after the return of spontaneous circulation were associated with good neurological outcomes in cardiac arrest survivors. Methods This retrospective observational study was based on prospectively collected data from a single emergency intensive care unit (ICU). Twenty-nine out-of-hospital cardiac arrest survivors who were admitted to the ICU for post-resuscitation care were enrolled. Blood samples were collected at 0 and 24 hours after ICU admission. According to the 6-month cerebral performance category (CPC) scale, the patients were divided into good (CPC 1 and 2, n=12) and poor (CPC 3 to 5, n=17) outcome groups. Results No difference was observed between the two groups in terms of the serum levels of ICAM-1, VCAM-1, E-selectin, and S100 at 0 and 24 hours. A simultaneous decrease in the serum levels of VCAM-1 and S100 as well as E-selectin and S100 was associated with good neurological outcomes. When other variables were adjusted, a simultaneous decrease in the serum levels of VCAM-1 and S100 was independently associated with good neurological outcomes (odds ratio, 9.285; 95% confidence interval, 1.073 to 80.318; P=0.043). Conclusion A simultaneous decrease in the serum levels of soluble VCAM-1 and S100 within the first 24 hours after the return of spontaneous circulation was associated with a good neurological outcome in out-of-hospital cardiac arrest survivors.

Microphysical characteristics of frozen droplet aggregates from deep convective clouds

Um, Junshik,McFarquhar, Greg M.,Stith, Jeffrey L.,Jung, Chang Hoon,Lee, Seoung Soo,Lee, Ji Yi,Shin, Younghwan,Lee, Yun Gon,Yang, Yiseok Isaac,Yum, Seong Soo,Kim, Byung-Gon,Cha, Joo Wan,Ko, A-Reum Copernicus GmbH 2018 Atmospheric Chemistry and Physics Vol.18 No.23

<P>Abstract. During the 2012 Deep Convective Clouds and Chemistry (DC3) experiment the National Science Foundation/National Center for Atmospheric Research Gulfstream V (GV) aircraft sampled the upper anvils of two storms that developed in eastern Colorado on 6 June 2012. A cloud particle imager (CPI) mounted on the GV aircraft recorded images of ice crystals at altitudes of 12.0 to 12.4 km and temperatures (T) from −61 to −55 ∘C. A total of 22 393 CPI crystal images were analyzed, all with maximum dimension (Dmax⁡)<433 µm and with an average Dmax⁡ of 80.7±45.4 µm. The occurrence of well-defined pristine crystals (e.g., columns and plates) was less than 0.04 % by number. Single frozen droplets and frozen droplet aggregates (FDAs) were the dominant habits with fractions of 73.0 % (by number) and 46.3 % (by projected area), respectively. The relative frequency of occurrence of single frozen droplets and FDAs depended on temperature and position within the anvil cloud. A new algorithm that uses the circle Hough transform technique was developed to automatically identify the number, size, and relative position of element frozen droplets within FDAs. Of the FDAs, 42.0 % had two element frozen droplets with an average of 4.7±5.0 element frozen droplets. The frequency of occurrence gradually decreased with the number of element frozen droplets. Based on the number, size, and relative position of the element frozen droplets within the FDAs, possible three-dimensional (3-D) realizations of FDAs were generated and characterized by two different shape parameters, the aggregation index (AI) and the fractal dimension (Df), that describe 3-D shapes and link to scattering properties with an assumption of spherical shape of element frozen droplets. The AI of FDAs decreased with an increase in the number of element frozen droplets, with larger FDAs with more element frozen droplets having more compact shapes. The Df of FDAs was about 1.20-1.43 smaller than that of black carbon (BC) aggregates (1.53-1.85) determined in previous studies. Such a smaller Df of FDAs indicates that FDAs have more linear chain-like branched shapes than the compact shapes of BC aggregates. Determined morphological characteristics of FDAs along with the proposed reconstructed 3-D representations of FDAs in this study have important implications for improving the calculations of the microphysical (e.g., fall velocity) and radiative (e.g., asymmetry parameter) properties of ice crystals in upper anvil clouds. </P>

Plant Regeneration through Anther Culture of Digitalis purpurea

A Reum Kwon,Hyung Mok Jang,Jeong Ae Ko 한국원예학회 2011 한국원예학회 학술발표요지 Vol.2011 No.5