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筆者らは、これまでコロナ禍において歌唱が制限されている「不自由感」、対面授業やオンライン授業に対する学生のポジティブな印象評定が主観的な授業時間の長さイメージや没入感に及ぼす影響に関する研究を行ってきた。また、附属山口小学校の協力を得た研究においては、Googleフォームを用いた授業の「振り返り」において音楽科における没入感を調査し、その結果から音楽科における没入感の認識や領域・活動との関連を明らかにした。本研究では、筆者らが開発した音楽科における小中学生版「深い学び」尺度を大学生向けに適用し、没入感尺度を加えて調査・分析することで、合唱における「深い学び」と没入感の実態を明らかにすることを目的としている。 調査・分析の結果、因子間の相関係数はｒ ＝0.6〜0.78と高い値を示し、因子間の相関係数が強いことが示唆された。今年度の合唱の授業では、受講生のモチベーションを高めるよう工夫し、最終回の授業で仕上げの合唱を終えた直後に本研究の調査を実施したことで調査結果に影響を与えたことが考えられる。合唱の授業に対する没入感を高めるには、授業が分かったと考えられるようになること、楽しいと思えるようになることという２つの経路（パス）があることが示された。本研究では、合唱の授業を対象としたが、大学の授業は専門性の高い科目によって占められているため、本研究で得られた知見は他の授業科目にも応用できる可能性がある。

研究論文, Articles, In Thailand, the number of learners who study Japanese as a foreign language at schools has been increasing, and many of them are high school students. Most of the Japanese language teachers there are Thai teachers who are non-native Japanese speaker teachers (NNJSTs). Recently native Japanese speaker teachers (NJSTs) very often participate to teach Japanese with Thai teachers at high schools. However, the reports and studies on how Thai and Japanese teachers work collaboratively to teach Japanese at high schools are limited in publication. This paper examines essential elements for better collaborations between Thai and Japanese teachers in Japanese language teaching at high schools in Thailand. This study presents an analysis of the interview data obtained from these teachers in Thailand, utilizing the SCAT (Steps for Coding and Theorization) method. It is important for both Thai and Japanese teachers to maintain communication to share information and understand with each other, and have positive attitudes for collaborative teaching between NNJSTs and NJSTs. They need to have more experience in collaborative teaching of Japanese and to be flexible in their collaboration styles.

Background Overdiagnosis in mammography (MMG) is a problem. Combination of MMG and ultrasonography for breast cancer screening may increase overdiagnosis. Most cases of overdiagnosis are low-grade ductal carcinoma in situ (LGD), but no reports have focused on them. Materials and methods We immunostained 169 ductal carcinoma in situ (DCIS) cases for ER, PgR, HER2 and Ki67 and classified them into 4 subtypes : ER(+)/ HER2(-), ER(+)/HER2(+), ER(-)/HER2(-) and ER(-)/HER2(+). The Ki67 index was used to evaluate the grade of malignancy and examined for correlations with each ER/HER2 subtype and the nuclear grade (NG), with/without comedo necrosis. Results The Ki67 index correlated significantly with NG, both with/without comedo necrosis, and reliably evaluated the grade of malignancy. The index for ER(+)/HER2(-) (n=117, 69.2%) was 7.45±7.10, which was significantly lower than for each of the other types. The index was 5.71±6.94 for ER(+)/HER2(-) without comedo necrosis (n=52, 30.8%), which was significantly lower than with comedo necrosis. This was considered LGD, characterized by absence of microcalcification in MMG and either presence of a solid mass or cystic lesion or absence of hypoechoic areas in ultrasound. Conclusion In Japan, ER(+)/HER2(-) without comedo necrosis accounts for about 30% of DCIS and is LGD. This may be being overdiagnosed.

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8, KJ00006805099, 研究論文

4, KJ00004570282, 研究論文