Author

Su-yeon Lee

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Sep 2026

The Effects of Problem-Based Learning on Teaching, Social, and Cognitive Presence Among Adult Learners in Blended Learning Environments

This study examined the effects of Problem-Based Learning (PBL) design elements on the formation of teaching, social, and cognitive presence—the three components of the Community of Inquiry (CoI) framework—among adult learners in Blended Learning (BL) environments. Data were collected from 140 adult learners enrolled i...

Su-yeon Lee · The K Association of Educati... · 0 citations

Oct 2026

First Report of Fusarium fujikuroi Causing Wilt of Norway spruce Seedlings in Korea

Norway spruce (Picea abies (L.) H. Karst.) is a coniferous species introduced to Korea for its ornamental and economic value. Seedlings of P. abies were grown from seeds obtained from the Korea National Forest Seed and Variety Center and cultivated in commercial potting mix for research purposes in a greenhouse at Cho...

Su-yeon Lee, Henry B. Ajuna, Jae-Hyun Moon et al. · Plant Disease · 0 citations

Aug 2026

First Report of Heterophoma poolensis Causing Leaf Spot Disease on Mountain Spike Speedwell ( Pseudolysimachion rotundum var. subintegrum ) in Korea

Mountain spike speedwell (Pseudolysimachion rotundum var. subintegrum) is a perennial herb traditionally used as a medicinal plant for treating respiratory ailments and has recently gained importance as a nectar resource plant (Na et al. 2024; Song et al. 2015). In May 2024, leaf spot symptoms were observed on potted m...

Su-yeon Lee, Hyun-Jun Kim, Ju-Yeol Yun et al. · Plant Disease · 0 citations