著者
大橋 航
出版者
新領域創成科学研究科 環境学研究系 社会文化環境学専攻
巻号頁・発行日
2007-03-22

報告番号: ; 学位授与年月日: 2007-03-22; 学位の種別: 修士; 学位の種類: 修士(環境学) ; 学位記番号: 修創域第2283号 ; 研究科・専攻: 新領域創成科学研究科社会文化環境学専攻
著者
髙橋 由亮
巻号頁・発行日
2013

筑波大学修士 (図書館情報学) 学位論文・平成25年3月25日授与 (30942号)
著者
佐藤 奈緒美
巻号頁・発行日
2013

筑波大学修士 (図書館情報学) 学位論文・平成25年3月25日授与 (30939号)
著者
Tsai Jing-Fu Kudo Shin-ichi Yoshizawa Kazunori
出版者
BioMed Central
雑誌
BMC Evolutionary Biology (ISSN:14712148)
巻号頁・発行日
vol.15, pp.258, 2015-11-19
被引用文献数
6

Background: Maternal care (egg-nymph guarding behavior) has been recorded in some genera of Acanthosomatidae. However, the origin of the maternal care in the family has remained unclear due to the lack of phylogenetic hypotheses. Another reproductive mode is found in non-caring species whose females smear their eggs before leaving them. They possess pairs of complex organs on the abdominal venter called Pendergrast’s organ (PO) and spread the secretion of this organ onto each egg with their hind legs, which is supposed to provide a protective function against enemies. Some authors claim that the absence of PO may be associated with the presence of maternal care. No study, however, has tested this hypothesis of a correlated evolution between the two traits. Results: We reconstructed the molecular phylogeny of the subfamily Acanthosomatinae using five genetic markers sequenced from 44 species and one subspecies with and without maternal care. Eight additional species from the other two acanthosomatid subfamilies were included as outgroups. Our results indicated that maternal care has evolved independently at least three times within Acanthosomatinae and once in the outgroup species. Statistical tests for correlated evolution showed that the presence of maternal care is significantly correlated with the secondary loss or reduction of PO. Ancestral state reconstruction for the node of Acanthosoma denticaudum (a non-caring species in which egg smearing with developed POs occurs) and A. firmatum (a caring species with reduced POs) suggested egg smearing was still present in their most recent common ancestor and that maternal care in A. firmatum has evolved relatively recently. Conclusions: We showed that maternal care is an apomorphic trait that has arisen multiple times from the presence of PO within the subfamily Acanthosomatinae. The acquisition of maternal care is correlated with the reduction or loss of PO, which suggests an evolutionary trade-off between the two traits resulting from physiological costs. This prediction also implies that presence of maternal care can be highly expected for those groups lacking behavioral data, which invariably also lack the organ. No secondary loss of maternal care was detected in the present tree. We suggest that the loss of maternal care may be suppressed due to the vulnerability of the PO-free condition, which thus maintains maternal care.
著者
渡辺 謙仁
出版者
日本航空宇宙学会
雑誌
宇宙科学技術連合講演会講演集
巻号頁・発行日
vol.60, pp.JSASS-2016-4023, 2016-09-06

An international organization called ATC21S suggests “21st century skills” and states importance of merged skills which are not resolved into learning contents of each subject in school. It is difficult to enhance such skills by old unsystematic education among each subject. On the other hand, “STEAM education,” which is merged Science, Technology, Engineering, Art and design, and Math is attracting attention and is being promoted in the United States, Korea and other countries. It is thought that education into which several subjects are merged like STEAM education is effective in enhancement of merged skills like 21st century skills. The author explains the reason why “space science” is good for STEAM education in this article.
著者
山元 宣宏
出版者
京都大学
巻号頁・発行日
2008-03-24

新制・課程博士
著者
武田 榮夫
出版者
京大天文台アーカイブプロジェクト(京大総合博物館、理学研究科附属天文台、理学研究科宇宙物理学教室)
雑誌
第4回天文台アーカイブプロジェクト報告会集録
巻号頁・発行日
vol.4, pp.15-18, 2014-01-15

研究資源アーカイブ映像ステーションイベント : 京都大学映像ステーション, 2013/08/01
著者
胡 琪
巻号頁・発行日
2014-12-25

5, 179p.
著者
山本 一成
出版者
京都大学大学院教育学研究科
雑誌
京都大学大学院教育学研究科紀要 (ISSN:13452142)
巻号頁・発行日
vol.59, pp.305-317, 2013-03-28

Understanding children's experience is an essential task for preschool teachers. It is also an important mission for research on early childhood education. This paper reconsiders research on the practice of early childhood education, to describe the experience of children and teachers, as part of the process of education. Experience cannot be described completely from a single perspective. Theories of description, such as phenomenology and ecological psychology, sometimes provide opposite views with regard to the theme of early childhood educational practices. Research on the practice, from a pragmatic view, cannot define the truth of experience. Truth and goodness are found by teachers as a practical consequence of utilizing the research. The contents of the research should be reconsidered in the process of utilization through dialogue among the text, practitioners, and other researchers. Research on the practice can contribute to the development of practices of teachers by working within their experience and produce continuous dialogue on the meanings and values of children's experience. Research on the practice of early childhood education is an endless inquiry to understand children's experience, and requires a respectful attitude toward a diversity of experience.