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坂本正(Sakamoto Tadashi) 한국일본문화학회 2000 日本文化學報 Vol.9 No.-
The purpose of this study is to review the studies that have investigated the acquisition of Japanese benefactive verbs in first and second language acquisition and also to compare the acquisitional order of the Japanese (te-) ageru, (te-)morau, and (te-) kureru. It is found that it is still early to determine the acquisitional order of these verbs since the results that have been reported vary greatly including this study and that the order seems to be greatly influenced by the research method adopted.
坂本正(Tadashi Sakamoto) 한국일본문화학회 2002 日本文化學報 Vol.14 No.-
It is generally the case that some kind of feedback is given when a learner makes an error in speaking a non-native language. In this paper, I discuss 1) reasons why corrective feedback tends to be given, and find that 2) three different groups according to the feedback effectiveness are found among the researches carried out in the past, and talk about 3) two types of feedback -- feedback which lets the learner notice the existence of error and feedback which corrects the learner's error. Lastly, some cautions that should be considered in delivering corrective feedback are discussed briefly.
坂本正(Tadashi Sakamoto) 한국일본문화학회 2001 日本文化學報 Vol.11 No.-
I have been working as an instructor of Japanese as a non-native language for about 25 years. The purpose of this paper is to reflect on my 'teaching' from many different viewpoints in the classroom and to make a fruitful bridge from the present Japanese language teaching methodology to the future methodology through these constructive reflections.
ニ?ワヤン?プリリヤシンタ(Ni Wayan Prilyasinta),坂本正(Tadashi Sakamoto) 한국일본문화학회 2016 日本文化學報 Vol.0 No.69
This paper explores the different motivations of Korean and Indonesian learners of Japanese. The results show that; 1) the length of learning significantly affects students’ motivation in both groups; 2) there is significant difference in intrinsic motivation across the two groups; 3) there is significant difference between the two groups with regard to intrinsic and extrinsic motivation; 4) some dimensions of motivation change as learners continue to study Japanese while others do not.
松下由美子(Matsushita, Yumiko),西花?子(Nishihana, Keiko),坂本正(Sakamoto, Tadashi) 한국일본문화학회 2018 日本文化學報 Vol.0 No.77
This paper discusses the potential and challenges of using SNS in Japanese language education and Japanese language acquisition research. Along with the rapid spread of Internet usage, the Japanese language education field has been undergoing a rapid retrenchment. Against this background, this paper sets out to review and evaluate past research on SNS as well as to analyze the results of a questionnaire given to Japanese language learners at two Korean Universities concerning their awareness and usage of SNS and how it meets learner’s needs. The written questionnaire results show that over 80% of Japanese learners answered “yes” to the question of whether they want to use SNS in their learning. The results also show that a larger number of learners would like the possibility of communicating directly with Japanese speakers two or three times per week, for about thirty minutes each time. Moreover, SNS can be used in Japanese language acquisition research, allowing for communication with remote subjects. By using ZOOM, not only can messages and conversations be recorded and analyzed, the analysis of non-verbal communication is also possible Furthermore, SNS can be used not only for quantitative but also qualitative research, since our ability to make comments while viewing a file allows us to analyze internal processes. However, there are still many questions to consider, including not only how best to meet learners’ needs, but also how to reduce the emotional burden of learners when they face native Japanese speakers, how to prevent information disclosure, and the role of teachers’ networks. These are all issues that still need to be addressed.
SNS利用で会話能力が伸びるのか - Can Do Statements と交流後の意識調査を基にして-
西花?子(Nishihana, Keiko),松下由美子(Matsushita, Yumiko),坂本正(Sakamoto, Tadashi) 한국일본문화학회 2019 日本文化學報 Vol.0 No.81
This paper addresses the improvement of oral proficiency in Korean learners of the Japanese language who engaged in interactions with Japanese native speakers based on the results of a survey. Twenty-two pairs of Japanese and Korean students interacted on social media through video- or voice-calls. Before and after these interactions, the Korean students were asked to fill out a survey using “Can-Do” Statements. The group of students who engaged in the social media interactions were then compared with a group of nonparticipant learners of Japanese, and no differences were found in Japanese language acquisition between the two groups in this one-and-a-half month study. However, the results of the survey demonstrate that the learners who engaged in the interaction were satisfied with the experience. Their comments included statements such as, “I feel that my conversational skills have improved,” “I feel more confident about how I use Japanese,” and “I understood the conversation better, because we used video-calls instead of text messages.” Six months later, an additional survey was conducted in Korean and the comments obtained from it were as follows: “I want to talk with more Japanese people,” “I have become conscious about grammar and words I have not learnt yet,” and “I started checking the dictionary more often.” The participants also indicated that managing interactions out of the classroom, the choice of the social media used, and matching conversation partners were potential ways to improve the social media experience.
Novel green Sr4ScAl3O10:Eu2+ phosphor prepared by the Melt Quenching Technique
Kenji Toda,Masato Iwaki,Minenori Katsu,Shin-nosuke Kamei,Sun Woog Kim,Takuya Hasegawa,Masaru Muto,Ryota Yamanashi,Tatsuya Sakamoto,Tadashi Ishigaki,Kazuyoshi Uematsu,Mineo Sato,Dae Ho Yoon 한양대학교 세라믹연구소 2019 Journal of Ceramic Processing Research Vol.20 No.3
New green-emitting Sr4ScAl3O10:Eu2+ phosphor was prepared using a novel melt quenching synthesis method. The temperatureof raw materials irradiated with the strong light of the Xe arc-lamp was rose up to about 2273 K, followed by a sharp dropin the temperature after turn off the lamp. This method is a useful tool for rapid screening of novel phosphor materials.