{"created":"2022-01-28T04:25:19.884788+00:00","id":2007540,"links":{},"metadata":{"_buckets":{"deposit":"03b48439-70e7-4850-af97-33f1fad6327e"},"_deposit":{"id":"2007540","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2007540"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02007540","sets":["1642837622505:1642837722116:1642837729896","1642838403551:1642838406845"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"魚の泳動に関する研究","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Study on swimming of fish","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"永井, 實","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"真栄田, 義才","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"伊良部, 邦夫","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Nagai, Minoru","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Maeda, Gisai","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Irabu, Kunio","creatorNameLang":"en"}]}]},"item_1617186476635":{"attribute_name":"Access Rights","attribute_value_mlt":[{"subitem_1522299639480":"open access","subitem_1600958577026":"http://purl.org/coar/access_right/c_abf2"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"Though it is well known that some aquatic animals can swim at higher speed than the value estimated from both of the muscle power and the friction drag received from the stream around the animal, the reason of such a high speed propulsion seems not yet to be solved. In this study, first, the swimming abilities of the various swimmers involving small fishes, dolphins, whales and a manmade submarine for reference were rearranged in a logarithmic chart and the subject of the problem was settled quantitatively. Then, measurements of drag force of some fishes by a towing type instrument with strain guage and observations of the swimming motion of fishes by a high speed camera were carried out in the water channel of laboratory. According to the experimental results, there is no evidence of that the skin friction of fish is smaller than that of the solid boundary of axi-symmetrical body in the experimental range of Reynolds number between 5X10⁴ and 5X10⁵. And it was found that swimming speed of fishes is proportional to the body length and the oscillating frequency of the tail fin. Then, a new dimensionless number u/(f･ℓ) was introduced as a swimming number. In the present observations, the swimming numbers of fish of three species were coincident each other at the value of 0.6, and this value also agreed with other species of a previous investigation.","subitem_description_type":"Other"},{"subitem_description":"紀要論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"琉球大学理工学部"},{"subitem_1522300295150":"en","subitem_1522300316516":"Science and Engineering Division, University of the Ryukyus"}]},"item_1617186702042":{"attribute_name":"Language","attribute_value_mlt":[{"subitem_1551255818386":"jpn"}]},"item_1617186783814":{"attribute_name":"Identifier","attribute_value_mlt":[{"subitem_identifier_type":"HDL","subitem_identifier_uri":"http://hdl.handle.net/20.500.12000/27574"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"0387-429X"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN00250785"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"琉球大学理工学部紀要. 工学篇"},{"subitem_1522650068558":"en","subitem_1522650091861":"Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1979-03-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"17","bibliographicPageEnd":"21","bibliographicPageStart":"15"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"VoR","subitem_1600292170262":"http://purl.org/coar/version/c_970fb48d4fbd8a85"}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"No17P015.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2007540/files/No17P015.pdf"},"version_id":"931cdba7-66e3-46e2-a8f4-3d74d7863d6a"}]},"item_title":"魚の泳動に関する研究","item_type_id":"15","owner":"1","path":["1642837729896","1642838406845"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2013-09-19"},"publish_date":"2013-09-19","publish_status":"0","recid":"2007540","relation_version_is_last":true,"title":["魚の泳動に関する研究"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T03:22:52.338124+00:00"}