Cheongju National University of Education
Cheongju, South Korea

Cheongju National University of Education is one of several national universities of education in South Korea. It provides training to teachers, particularly those who plan to teach in public elementary schools. The campus is located in Cheongju City, the capital of North Chungcheong province. Campus facilities include a lab school, library, and broadcasting center. The current president is Su-Hwan Kim. The school employs around 55 professors. Wikipedia.

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Bae I.,Korea Advanced Institute of Science and Technology | Han J.,Cheongju National University of Education
ACM/IEEE International Conference on Human-Robot Interaction | Year: 2017

For humans, a taller height is an advantage in expressing one's dominant strictness to others. To this point, robotic telepresence has preferred low-height robotic platforms for reasons such as operational stability, user convenience and psychological comfort. We examined whether the height of the robot had an effect on an instructor connected to a telepresence robot in robot-assisted learning with regard to controlling a large number of students. The experiment showed that the use of a taller robot, compared to a shorter robot, did not make a meaningful difference in the instructors' authority being accepted by the students. Though, students felt a shorter robot friendly than a life-size taller robot. © 2017 Authors.

Park J.,Kyungpook National University | Chung B.-H.,Cheongju National University of Education
Journal of Chemical Education | Year: 2015

Chemistry was almost exclusively the product of Western culture until the 20th century, and it was in the early 20th century that chemistry was introduced as a new type of learning within Korea. The work of a British chemist, Henry E. Roscoe, was unintentionally introduced into Korean education in 1907. We briefly explore how chemistry knowledge was accepted in Korea by tracing the publication process and lineage of Hong's Chemistry Textbook. © 2015 The American Chemical Society and Division of Chemical Education, Inc.

PubMed | Chonnam National University, Soonchunhyang University, Sokoine University of Agriculture, Cheongju National University of Education and Gwangju Institute of Science and Technology
Type: Journal Article | Journal: Developmental and comparative immunology | Year: 2015

Macroautophagy (hereinafter called autophagy) is a highly regulated process used by eukaryotic cells to digest portions of the cytoplasm that remodels and recycles nutrients and disposes of unwanted cytoplasmic constituents. Currently 36 autophagy-related genes (ATG) and their homologs have been characterized in yeast and higher eukaryotes, including insects. In the present study, we identified and functionally characterized the immune function of an ATG8 homolog in a coleopteran insect, Tenebrio molitor (TmATG8). The cDNA of TmATG8 comprises of an ORF of 363bp that encodes a protein of 120 amino acid residues. TmATG8 transcripts are detected in all the developmental stages analyzed. TmAtg8 protein contains a highly conserved C-terminal glycine residue (Gly116) and shows high amino acid sequence identity (98%) to its Tribolium castaneum homolog, TcAtg8. Loss of function of TmATG8 by RNAi led to a significant increase in the mortality rates of T.molitor larvae against Listeria monocytogenes. Unlike dsEGFP-treated control larvae, TmATG8-silenced larvae failed to turn-on autophagy in hemocytes after injection with L.monocytogenes. These data suggest that TmATG8 play a role in mediating autophagy-based clearance of Listeria in T.molitor.

In J.,Chungnam National University | Han J.,Cheongju National University of Education
ACM/IEEE International Conference on Human-Robot Interaction | Year: 2015

This study is to verify the effectiveness of robot TTS technology in assisting Korean English language learners to acquire a native-like accent by correcting the prosodic errors they commonly make. Child English language learners' F0 range, a prosodic variable, will be measured and analyzed for any changes in accent. We examined whether if robot with the currently available TTS technology appeared to be effective as much as a tele-presence robot with native speaker from the acoustic phonetic viewpoint. © 2015 Authors.

Shin K.W.C.,Indiana University Bloomington | Han J.,Cheongju National University of Education
ACM/IEEE International Conference on Human-Robot Interaction | Year: 2016

The primary concern of this study is to explore children's engagement and learning experiences in distant learning environments using three different videoconferencing technologies-two traditional screen-based videoconferencing technologies and a remotely-controlled telepresence robot. To truthfully capture the perspectives of the children, we employed multiple data collection methods-rating scales, narratives, ranking scales, and one-on-one interviews, as well as observation of nonverbal cues. Our findings suggest that participants reacted more positively to interactions via telepresence robot than to screen-based video-conferencing. © 2016 IEEE.

Han J.,Cheongju National University of Education | Park I.-W.,Kwangwoon University | Park M.,Minnehaha Academy
HAI 2015 - Proceedings of the 3rd International Conference on Human-Agent Interaction | Year: 2015

This Paper seeks to observe the changes in children from low-income families after being exposed to education through humanoid robots. An outreach education as it is, the study primarily focuses on the benefits of the said type of education. © 2015 ACM.

Park S.J.,Yujin Robot and 601 | Han J.H.,Stanford University | Han J.H.,Cheongju National University of Education | Kang B.H.,Yujin Robot and 601 | Shin K.C.,Yujin Robot and 601
Proceedings of IEEE Workshop on Advanced Robotics and its Social Impacts, ARSO | Year: 2011

Various studies on robot assisted learning have proven them to be effective tools for language education because robots are remarkably successful in eliminating the affective filter. This study demonstrates ROBOSEM with class content for sustaining long-term interaction with students in English classes of elementary schools as a teaching assistant, not a teacher. We close with some practical considerations for the continuous process of improving technology and its diffusion throughout society, such as in elementary schools, through interviews with developers and observations from field trials. © 2011 IEEE.

Han J.,Cheongju National University of Education
Language Learning and Technology | Year: 2012

Along with the rapid development of information and communication technologies, educators are trying to keep up with the dramatic changes in our electronic environment. These days mobile technology, with popular devices such as iPhones, Android phones, and iPads, is steering our learning environment towards increasingly focusing on mobile learning or m-Learning. Currently, most interfaces employ keyboards, mouse or touch technology, but some emerging input-interfaces use voice- or marker-based gesture recognition. In the future, one of the cutting-edge technologies likely to be used is robotics. Robots are already being used in some classrooms and are receiving an increasing level of attention. Robots today are developed for special purposes, quite similar to personal computers in their early days. However, in the future, when mass production lowers prices, robots will bring about big changes in our society. In this column, the author focuses on educational service robots. Educational service robots for language learning and robot-assisted language learning (RALL) will be introduced, and the hardware and software platforms for RALL will be explored, as well as implications for future research. © 2012.

PubMed | Cheongju National University of Education
Type: Journal Article | Journal: Archives of pharmacal research | Year: 2015

Dendrobium nobile belongs to the Orchidaceae family and is one of the medicinal herbs used in traditional Chinese medicine as a therapeutic agent for gastrointestinal and cardiovascular diseases. In this study, we separated three phenanthrenes (ephemeranthol A (EA), 1,5,7-trimethoxyphenanthren-2-ol (TP), dehydroorchinol (DO)) from D. nobile, and compared their anti-inflammatory activities. TP is a new phenanthrene compound and its structure was determined from (1)H, (13)C NMR and HR-ESI-MS data. To analyze the anti-inflammatory activities of the phenanthrenes, Raw 264.7 cells were used, since they are immature-macrophages and easily matured by LPS stimulation. EA and DO showed anti-inflammatory activities in the activated Raw 264.7 cells. That is, we showed that EA is a potent inhibitor of the production of nitric oxide and pro-inflammatory cytokines. The inhibitory activities of phenanthrenes were found to be caused by blockage of NF-B activation and the phosphorylation of MAP kinases in the macrophages. These results are expected to serve as a guide for future studies on the ability of phenanthrenes to inhibit acute and chronic inflammatory diseases.

PubMed | Cheongju National University of Education
Type: Journal Article | Journal: Mycobiology | Year: 2016

Arbuscular mycorrhizal fungi (AMF) are ubiquitous in the rhizosphere and form symbiotic relationships with most terrestrial plant roots. In this study, four strains of Rhizophagus clarus were cultured and variations in their growth characteristics owing to functional diversity and resultant effects on host plant were investigated. Growth characteristics of the studied R. clarus strains varied significantly, suggesting that AMF retain high genetic variability at the intraspecies level despite asexual lineage. Furthermore, host plant growth response to the R. clarus strains showed that genetic variability in AMF could cause significant differences in the growth of the host plant, which prefers particular genetic types of fungal strains. These results suggest that the intraspecific genetic diversity of AMF could be result of similar selective pressure and may be expressed at a functional level.

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