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최하윤,김우리 한국특수교육교과교육학회 2023 특수교육교과교육연구 Vol.16 No.4
The purpose of this study is to analyze research on composition for students with disabilities in elementary schools and to explore future research directions. A total of 17 studies were selected for analysis based on the inclusion and exclusion criteria. This study examined general research trends (year of publication, research subjects, research designs, writing tasks, and evaluation methods), and analyzed writing characteristics of the students, intervention methods to improve the quantity and quality of writing. The results of the analysis were as follows. First, the studies has been conducted consistently since 2005, and the subjects were predominantly students with learning disabilities, enrolled in grades 5 and 6. In addition, the types of writing tasks primarily included narrative writing and the evaluation employed a combination of quantitative and qualitative indicators of writing. Second, students with learning disabilities and high-functioning autism exhibited lower achievement compared to other students. Their primary errors were in spelling and spacing in quantitative aspects, while their overall performance was poor in qualitative aspects. Third, most studies employed explicit instruction as intervention methods, and SRSD was frequently used among the explicit instruction. Based on these findings, we discussed the implications for future research on writing for students with disabilities.
최하윤,한희준,최지원,정한영,좌경림 대한재활의학회 2018 Annals of Rehabilitation Medicine Vol.42 No.1
Objective To evaluate the effect of high-intensity interval training (HIIT) on psychological symptoms, activity states, and cardiovascular functions in patients with myocardial infarction (MI) of low and moderate risk stratification. Methods This prospective study randomly allocated 44 patients with MI to 18 sessions of HIIT or conventional moderate-intensity continuous training (MICT). Outcome measures were assessed at baseline and after 18 sessions. Results Post-exercise cardiovascular and functional states, maximal oxygen uptake (VO2max), metabolic equivalents (METs), 6-Minute Walking Test (6MWT), and Korean Activity Scale/Index (KASI) scores were significantly improved in the HIIT group compared to those in the MICT group after 18 exercise sessions. In particular, VO2max was significantly (p<0.005) improved in the HIIT group (7.58 mL/kg/min) compared to that in the MICT group (2.42 mL/kg/min). In addition, post-exercise psychological states (i.e., scores of Fatigue Severity Scale [FSS] and depression items of the Hospital Anxiety and Depression Scale [HADS_D]) were significantly improved in the HIIT group compared to those in the MICT group after 18 exercise sessions. HADS-D was improved by 1.89 in the HIIT group compared to decrement of 0.47 in the MICT group. FSS was improved by 6.38 in the HIIT group compared to decrement of 0.77 in the MICT group (p<0.005). Conclusion This study demonstrates that HIIT can improve cardiac function, psychological, and activity states in low and moderate risk MI patients. Compared to conventional MICT, HIIT can improve cardiovascular functions, activity states, depression, and fatigue more effectively.
민은홍(Eun-Hong Min),최하윤(Ha-Yun Choi),김영규(Young-Gyu Kim),백광준(Kwang-Jun Paik),구원철(Weon-Cheol Koo) 한국해양공학회 2019 韓國海洋工學會誌 Vol.33 No.1
The sea is stratified with water that has different densities because of pressure, temperature, and salinity. When conducting studies of internal waves in the ocean, the fluid is assumed to have layers that have discrete densities. This assumption is made because it is difficult to achieve layers that exhibit gradual changes in the density of the water. In this study, we used previous studies on ocean waves and their radiation issues in the density layer fluid to investigate the characteristics of internal waves in the ocean and their radiation patterns induced by a moving body in a stratified fluid. We also studied the difference in wave radiation between the density gradient layer and the discrete density layer. We found that the wave radiation patterns depended on the velocity of the moving body and the change in the density of the water. The crest apex shift phenomenon was observed in the density gradient in the layer of fluid.