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Bitterlings are employed in the observation test. A group of five bitterlings is placed in shallow water in a test section 30cm in width and l00cm in length prepared in the laboratory water flume 300 cm long, and is made to swim freely. Two obstacle structures are attached on a side of the test section of the water flume to form a stagnation of water and a flowing current. The fish schooling behavior is recorded by a video camera and analyzed to determine positions of an individual fish consisting the fish schooling. The flow velocity is monitored at an entrance of the test section of the water flume. 0, 5, 10 and 15 cm/s of the velocity are selected for the observation test of the fish schooling behavior, in which 0 cm/s means no flow in the water flume. Five observations are repeated with changing the group of five bitterlings at each level of the monitored velocity of flow. The positions of the individual fish are read and digitized by 1 second interval during five minutes observation. Then these positions are plotted on an area of the test section of the laboratory water flume to show some pattern of the fish's swimming behavior. It is found from this plot that a frequency which the individual fish passes on and enters into a block divided within the test section of the water flume according to the flow pattern changes with the velocity of flow in the water flume. It is also found that, from a plot of radius defining the distributed area of the fish schooling with time, the fish schooling behavior is destroyed with increasing velocity of flow in the water flume.","subitem_description_type":"Abstract"}]},"item_7_full_name_3":{"attribute_name":"\u8457\u8005\u5225\u540d","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"163942","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Okaguchi, Maki"}]},{"nameIdentifiers":[{"nameIdentifier":"163943","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Mori, Takayuki"}]},{"nameIdentifiers":[{"nameIdentifier":"163944","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Morii, Toshihiro"}]}]},"item_7_publisher_7":{"attribute_name":"\u51fa\u7248\u8005","attribute_value_mlt":[{"subitem_publisher":"\u65b0\u6f5f\u5927\u5b66\u8fb2\u5b66\u90e8"}]},"item_7_select_19":{"attribute_name":"\u8457\u8005\u7248\u30d5\u30e9\u30b0","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_7_source_id_11":{"attribute_name":"\u66f8\u8a8c\u30ec\u30b3\u30fc\u30c9ID","attribute_value_mlt":[{"subitem_source_identifier":"AN00183393","subitem_source_identifier_type":"NCID"}]},"item_7_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03858634","subitem_source_identifier_type":"ISSN"}]},"item_creator":{"attribute_name":"\u8457\u8005","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"\u5ca1\u53e3, \u771f\u7d00"}],"nameIdentifiers":[{"nameIdentifier":"163939","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"\u68ee, \u656c\u5e78"}],"nameIdentifiers":[{"nameIdentifier":"163940","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"\u68ee\u4e95, \u4fca\u5e83"}],"nameIdentifiers":[{"nameIdentifier":"163941","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"\u30d5\u30a1\u30a4\u30eb\u60c5\u5831","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-08-20"}],"displaytype":"detail","filename":"55_2_169-175.pdf","filesize":[{"value":"522.1 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"55_2_169-175.pdf","url":"https://niigata-u.repo.nii.ac.jp/record/28500/files/55_2_169-175.pdf"},"version_id":"e5384395-8fc7-4aad-b83d-3531a096c303"}]},"item_keyword":{"attribute_name":"\u30ad\u30fc\u30ef\u30fc\u30c9","attribute_value_mlt":[{"subitem_subject":"\u9b5a\u7fa4\u884c\u52d5","subitem_subject_scheme":"Other"},{"subitem_subject":"\u30bf\u30ca\u30b4","subitem_subject_scheme":"Other"},{"subitem_subject":"\u5ba4\u5185\u6c34\u8def\u5b9f\u9a13","subitem_subject_scheme":"Other"},{"subitem_subject":"schooling behavior","subitem_subject_scheme":"Other"},{"subitem_subject":"Bitterlings","subitem_subject_scheme":"Other"},{"subitem_subject":"Laboratory water flume test","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"\u8a00\u8a9e","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"\u8cc7\u6e90\u30bf\u30a4\u30d7","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"\u6d41\u308c\u306e\u3042\u308b\u5ba4\u5185\u6c34\u8def\u306b\u304a\u3051\u308b\u9b5a\u7fa4\u884c\u52d5\u306e\u89b3\u5bdf","item_titles":{"attribute_name":"\u30bf\u30a4\u30c8\u30eb","attribute_value_mlt":[{"subitem_title":"\u6d41\u308c\u306e\u3042\u308b\u5ba4\u5185\u6c34\u8def\u306b\u304a\u3051\u308b\u9b5a\u7fa4\u884c\u52d5\u306e\u89b3\u5bdf"},{"subitem_title":"\u6d41\u308c\u306e\u3042\u308b\u5ba4\u5185\u6c34\u8def\u306b\u304a\u3051\u308b\u9b5a\u7fa4\u884c\u52d5\u306e\u89b3\u5bdf","subitem_title_language":"en"}]},"item_type_id":"7","owner":"1","path":["453/456","485/872/1583/1611"],"pubdate":{"attribute_name":"\u516c\u958b\u65e5","attribute_value":"2014-02-13"},"publish_date":"2014-02-13","publish_status":"0","recid":"28500","relation_version_is_last":true,"title":["\u6d41\u308c\u306e\u3042\u308b\u5ba4\u5185\u6c34\u8def\u306b\u304a\u3051\u308b\u9b5a\u7fa4\u884c\u52d5\u306e\u89b3\u5bdf"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2021-03-01T10:58:46.678872+00:00"}