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- 저자 : Yoonjung Kim (검색결과 275 건)
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Exploring the Use of a Machine Translator on EFL Learners’ Reading Comprehension
Kim,Hea-Suk,Cha Yoonjung 영상영어교육학회 2020 영상영어교육 (STEM journal) Vol.21 No.1
The study aims to examine whether a machine translator can be effective in promoting learners’ performance in reading comprehension. The main reason for using a machine translator, in this case Papago, was to increase students’ engagement in order to better comprehend the content of selected reading materials. Twenty-seven students were assigned to a wordlist group while thirty-four were assigned to a Papago group. The wordlist group was provided with a wordlist before reading the main texts while the Papago group used Papago. Both groups took a reading comprehension test before and after the experiment. The test comprised 20 reading comprehension and vocabulary questions. A significant difference in reading performance was found between the wordlist group and the Papago group. Furthermore, the results of the survey revealed that the participants’ perspectives in both groups showed significant differences in all items. Open-ended responses demonstrated the benefits and drawbacks of utilizing the wordlists and Papago. Consequently, the findings of this study indicate that students preferred the wordlists to Papago for understanding the reading texts. That is, using machine translators may not be useful in L2 reading. In this light, several pedagogical implications for designing and using machine translators are proposed.
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Kim,Hea-Suk,Cha,Yoonjung,Kim,Na-Young 이화여자대학교 교과교육연구소 2021 교과교육학연구 Vol.25 No.2
The purpose of this study is to examine students’ perspectives on two online learning formats: pre-recorded video lectures versus video-conferencing. There were 90 participants who took College English courses in a university in Seoul. Participants took TOEIC tests before taking the classes and were divided into two different proficiency level groups: a high-level group and a low-level group. All participants studied English via both pre-recorded video lectures and video-conferencing (Zoom) for the whole semester. Questionnaires were carried out to explore students’ perspectives on both online formats in accordance with their proficiency levels. The findings of the closed-ended questionnaires revealed that significant differences were not found between the low- and high-level groups regardless of the online learning formats. Regarding students’ perspectives about these online English formats, a statistical difference was not found between the two groups. It is worth noting that students did not show any significantly different perspectives concerning online courses regardless of their proficiency levels. As for the open-ended questionnaires, both groups noted various benefits and drawbacks of the current online learning platforms. Also, they provided constructive suggestions for these online learning formats. The results of this study have pedagogical implications for carrying out successful online courses.
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Non‐Volatile Control of 2DEG Conductivity at Oxide Interfaces
Kim, Shin‐,Ik,Kim, Dai‐,Hong,Kim, Yoonjung,Moon, Seon Young,Kang, Min‐,Gyu,Choi, Jong Kwon,Jang, Ho Won,Kim, Seong Keun,Choi, Ji‐,Won,Yoon, Seok‐,Jin,Chang, Hye Jung,Kang WILEY‐VCH Verlag 2013 ADVANCED MATERIALS Vol.25 No.33
<P><B>The functionalization of two‐dimensional electron gas (2DEG) at oxide interfaces</B> can be realized integrating 2DEG with multifunctional oxide overlayers by epitaxial growth. Using a ferroelectric Pb(Zr<SUB>0.2</SUB>Ti<SUB>0.8</SUB>)O<SUB>3</SUB> overlayer on 2DEG (LaAlO<SUB>3</SUB>/SrTiO<SUB>3</SUB>), we demonstrate a model system of the functionalized 2DEG, where electrical conductivity of 2DEG can be reversibly controlled with a large on/off ratio (>1000) in a non‐volatile way by ferroelectric polarization switching.</P>
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Yoonjung Kim,Sun Jin Nho,Gyeongji Woo,Hyejin Kim,Suyeon Park,Youngtaek Kim,Ok Park,Kyungwon Oh 한국역학회 2021 Epidemiology and Health Vol.43 No.-
OBJECTIVES: We aimed to explore trends in the prevalence and management of obesity, hypertension, diabetes, and hypercholesterolemia in Korean adults from 1998 to 2018 using data from the Korea National Health and Nutrition Examination Survey (KNHANES). METHODS: The study participants included 79,753 individuals aged ≥30 years who had participated in the health examination and health interview of the first (1998) to the seventh (2016-2018) KNHANES. The prevalence and management as well as annual percent change (APC) in chronic diseases were analyzed using SAS and the Joinpoint software program. RESULTS: The prevalence of obesity in men significantly increased from 26.8% in 1998 to 44.7% in 2018 (APC=1.9, p<0.001), whereas that in women decreased slightly from 30.5% in 1998 to 28.3% in 2018 (APC=-0.5, p<0.001). The prevalence of hypertension in men was 33.2% in 2018, with no significant change, whereas that in women slightly decreased to 23.1% in 2018 (APC=-0.9, p<0.001). The prevalence of diabetes in men increased slightly from 10.5% in 2005 to 12.9% in 2018 (APC=1.6, p<0.001), whereas that in women remained at approximately 8%, with no significant change. The prevalence of hypercholesterolemia in both men and women increased 3-fold in 2018 (20.9% in men [APC=8.2, p<0.001] and 21.4% in women [APC=7.1, p<0.001]) compared to that in 2005. The awareness rate, treatment rate, and control rate of hypertension and hypercholesterolemia increased 2-3 fold. Regarding diabetes, the treatment rate increased, but the control rate did not change. CONCLUSIONS: Over the past 20 years, the prevalence of obesity (in men), diabetes, and hypercholesterolemia has increased and management indicators, such as the awareness rate, treatment rate, and control rate of chronic diseases, have improved continuously.
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Kim, Suhee,Kim, Hyunwoo,Lee, Soo-Hyeon,Cho, Ilhan,Kang, Seongwoo,Bae, Junwoo,Kim, Woosun,Ahn, Soomin,Choi, Jihye,Kim, Sang-Ki,Do, Yoonjung,Yoo, Jae Gyu,Park, Jinho,Yu, DoHyeon 한국조명·전기설비학회 2017 한국조명·전기설비학회 학술대회논문집 Vol. No.
<P>Acute lymphocytic leukemia (ALL) is uncommon lymphoid malignancy in dogs, and its diagnosis is challenging. A 14-year-old spayed female mixed breed dog was transferred to a veterinary medical teaching hospital for an immediate blood transfusion. The dog showed lethargy, pale mucous membranes, and a weak femoral pulse. Complete blood count revealed non-regenerative anemia and severe leukopenia with thrombocytopenia. ALL was tentatively diagnosed based on the predominance of immature lymphoblasts on blood film examination. For confirmation of lymphoid malignancy, PCR for antigen receptor rearrangement (PARR) on a peripheral blood sample and flow cytometry analysis were performed after blood transfusion. Flow cytometry analysis revealed that lymphocyte subsets were of normal composition, but PARR detected a T-cell malignancy. The dog was diagnosed with ALL and survived 1 wk after diagnosis. In conclusion, after blood transfusion, flow cytometry was not a reliable diagnostic method for an ALL dog, whereas PARR could detect lymphoid malignancy. Our results suggest that PARR should be the first-line diagnostic tool to detect canine lymphoid malignancy after a blood transfusion.</P>
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Electrochromic Diffraction from Nanopatterned Poly(3-hexylthiophene)
Kim, Yuna,Kim, Yoonjung,Kim, Sehwan,Kim, Eunkyoung American Chemical Society 2010 ACS NANO Vol.4 No.9
<P>Poly(3-hexylthiophene) (P3HT) films were patterned by a soft lithography technique using a nanopatterned polydimethylsiloxane (PDMS) mold to generate one-dimensional (1D) grating and two-dimensional (2D) crossed line pillar patterns. The redox currents (<I>i</I><SUB>p</SUB>) were significantly increased due to the facilitated diffusion of ClO<SUB>4</SUB><SUP>−</SUP> counterions associated with redox processes at the P3HT electrode as analyzing cyclic voltammetry (CV) was performed at different scan rates (ν). It was found that the diffusion coefficient (<I>D</I><SUB>f</SUB>, cm<SUP>2</SUP> s<SUP>−1</SUP>) for ion diffusion in the patterned electrode was much larger than that of the pristine P3HT electrode. Furthermore, the value of <I>D</I><SUB>f</SUB> in the 2D electrode was three times higher than that in a pristine film. As a result of such facilitated charge transport, the electrochromic (EC) properties of the patterned P3HT electrode were greatly enhanced and dependent on the dimension of the pattern. Thus, the electrochromic efficiency (<I>E</I><SUB>e</SUB>), including the coloration (<I>E</I><SUB>c</SUB>) and bleaching efficiencies (<I>E</I><SUB>b</SUB>), was higher as the dimension of the pattern was increased; <I>E</I><SUB>e</SUB> was maximized in the 2D patterned P3HT film. In a patterned cell, electrochromic diffraction was reversibly observed with a switching efficiency (<I>R</I><SUB>DE</SUB>) of 2 and 2.5 for the 1D and 2D patterned cells, respectively.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2010/ancac3.2010.4.issue-9/nn1016378/production/images/medium/nn-2010-016378_0006.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn1016378'>ACS Electronic Supporting Info</A></P>
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Preliminary Guidelines for the Clinical Evaluation and Management of Long COVID
Kim Yoonjung,Kim Seong Eun,Kim Tark,Yun Ki Wook,Lee So Hee,Lee Eunjung,Seo Jun-Won,Jung Young Hee,Chong Yong Pil 대한감염학회 2022 Infection and Chemotherapy Vol.54 No.3
Long-lasting coronavirus disease 2019 (COVID-19) symptoms beyond 12 weeks, the so-called ‘long COVID’ have been increasingly reported worldwide. Long COVID can be manifested in various forms, and there is an increasing demand for proper assessment and management. However, it is challenging when trying to determine the best-practice standards of care based on the current evidence because there is no internationally agreed clinical definition or clear treatment pathway. Therefore, the present guidelines have been drafted to provide advice on diagnosis and management based on the latest updated available evidence and the consensus of expert opinion. So far, no standard test and drug treatment can be strongly recommended for patients with long COVID because of a lack of evidence. The present guidelines provide advice based on 12 key questions, including appropriate interventions for long COVID that can be used in clinical practice. Continuous careful observation and studies related to long COVID are needed for the long-term impact of COVID-19 and proper management for long COVID to be determined.
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Kim Chang Seong,Kim Uh Jin,Lee Yoonjung,Lee Unhee,Choi Okja,Kim Sun-Hee,Lee Kwangho,Chung Yoon-Seok,Choi Hong Sang,Bae Eun Hui,Ma Seong Kwon,Kim Seong Eun,Kang Seung-Ji,Jung Sook-In,Kim Soo Wan,Park K 대한감염학회 2023 Infection and Chemotherapy Vol.55 No.1
Background: Determination of the release from isolation for coronavirus disease 2019 (COVID-19) in immunocompromised patients who need additional hospitalization for treatment of non-COVID-19 related disease is important to prevent nosocomial transmission. However, there is insufficient evidence for an extended isolation period. Materials and Methods: In September 2021, when the Delta variant was dominant, a nosocomial outbreak of COVID-19 occurred in the nephrology ward of a tertiary hospital in Gwangju, Korea. We conducted epidemiological investigations and whole-genome sequencing (WGS) of this virus. Results: A man who underwent kidney transplantation was admitted to our hospital for the treatment of acute kidney injury. He was diagnosed with asymptomatic COVID-19 infection during a pre-admission screening test on September 1, 2021 and underwent isolation. After 10 days of isolation in the COVID-19-designated ward, he was transferred to the general nephrology ward. He underwent steroid pulse therapy (September 17 to September 23, >60 mg/day prednisolone) due to acute T-cell rejection. On September 28, 2021, the first patient with COVID-19 was identified in the nephrology ward, and a rapid-response team was activated to identify additional patients with COVID-19 and prevent the spread of COVID-19. Epidemiological investigations revealed that 12 patients, two caregivers, and three healthcare workers from the nephrology ward were diagnosed with COVID-19. The WGS of specimens from 14 nosocomial outbreak samples and released an index patient exhibited the same Delta variant originating from the B.1.617.2 lineage. This hospital-acquired COVID-19 outbreak in the nephrology ward resulted in two (11.7%) deaths in patients who underwent kidney transplantation. Conclusion: We demonstrated that an immunocompromised patient can cause a nosocomial outbreak due to the prolonged shedding of infectious viruses. Prolonged isolation in patients under active immunosuppressive therapy may be necessary to prevent transmission, especially in the hospital setting.
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Kim Hack-Lyoung,Park Sang Min,Cho In-Jeong,Kim Yu-Mi,Kim Dae-Hee,Sung Hye Kim,김광일,성기철,임상현,Shin Jinho,Yoonjung Kim,Kyungwon Oh,Lee Eun Mi 대한고혈압학회 2023 Clinical Hypertension Vol.29 No.-
Accurate blood pressure (BP) measurement is crucial for hypertension detection and management. The Korea National Health and Nutrition Examination Survey (KNHANES) assesses the health of Koreans using representative cross-sectional data. BP measurements were historically done with mercury sphygmomanometers for participants aged ≥10 years. However, KNHANES transitioned to Greenlight 300TM (mercury-free auscultatory device) in 2020 for participants aged ≥6 years and used dual devices (Microlife WatchBP Office AFIB and Greenlight) in 2021-2022. To ensure consistency, KNHANES will adopt Microlife as the unified BP device with Greenlight for device validation from 2023. Under the new protocol, participants aged ≥6 years will have their BP measured three times at 30-second intervals after a 5-minute rest under ambient temperature (20-25℃) and noise ≤65 dB. The average of the 2nd and 3rd readings will be used as the representative BP value. The quality control (QC) program involves four trained examiners passing the “quality control and assurance of BP measurement program” three times annually, and undergoing “video monitoring of weekly calibration process” once a year. Additionally, the QC team will conduct “on-site evaluations of BP measurement” at mobile examination centers three times a year. A Five-Step QC process for BP devices was also developed. This document outlines the standardized BP measurement protocol and rigorous QC program in KNHANES, aiming to ensure accurate and reliable BP data for epidemiological research and public health policymaking in South Korea.
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