{"_buckets": {"deposit": "49fa43b3-82e3-41a9-90a7-12c194246bd4"}, "_deposit": {"id": "28504", "owners": [], "pid": {"revision_id": 0, "type": "depid", "value": "28504"}, "status": "published"}, "_oai": {"id": "oai:niigata-u.repo.nii.ac.jp:00028504", "sets": ["456", "1612"]}, "item_7_alternative_title_1": {"attribute_name": "その他のタイトル", "attribute_value_mlt": [{"subitem_alternative_title": "Mathematical Model of Schooling Behavior of Fish Observedin Laboratory Water Tank Experiment"}]}, "item_7_biblio_info_6": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2002-08", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "1", "bibliographicPageEnd": "65", "bibliographicPageStart": "57", "bibliographicVolumeNumber": "55", "bibliographic_titles": [{"bibliographic_title": "新潟大学農学部研究報告"}, {"bibliographic_title": "新潟大学農学部研究報告", "bibliographic_titleLang": "en"}]}]}, "item_7_description_4": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "静水浅水条件の室内水槽実験で魚群行動を観察した。実験には体長4-6cmのタナゴを用いた。観察した魚群の遊泳軌跡を、ニュートン力学モデルによるシミュレーション結果と比較した。ニュートン力学モデルでは、魚群を構成する個体は質点とみなされ、複数の個体の相互作用と場の影響を取り込んだ非線形運動方程式によって魚群行動が記述される。ニュートン力学モデルによる数値シミュレーションにより、観察された遊泳軌跡をうまく再現することが可能であるが、実務面からみると、計算に必要なパラメータの決定が非常に難しく、また生物学的な理由に起因する複雑な動きを再現できないなどの制約があることを確認した。水理解析モデルと魚群行動モデルを結びつけるための今後の研究方向を示した。", "subitem_description_type": "Abstract"}, {"subitem_description": "Schooling behavior of fish is observed in a shallow water tank. Bitterling about 4-6 cm in body length are employed in the laboratory experiments. The schooling behavior of fish observed is compared with results of a numerical simulation based on a Newtonian dynamics model. An individual fish that forms the fish school is assumed as a mass particle in the Newtonian dynamic model. Interactions acting among the mass particles are introduced into a set of nonlinear differential equations of motion to take external forces that cause the schooling behavior of fish into account. Effects of environmental field within the water tank are also considered in constructing the set of differential equations. A part of laboratory observations of the schooling behavior is well explained by the Newtonian dynamics model. But a practical difficulty to determine a set of model parameters that are required in the numerical calculations is noticed. As well it is shown that the Newtonian dynamics model cannot describe the behavior of individual fish induced by a biological but unforeseen impact. A small recommendation to couple a hydraulic engineering model with the mathematical model of schooling behavior of fish is given lastly.", "subitem_description_type": "Abstract"}]}, "item_7_full_name_3": {"attribute_name": "著者別名", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "163962", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Mori, Takayuki"}]}, {"nameIdentifiers": [{"nameIdentifier": "163963", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Okaguchi, Maki"}]}, {"nameIdentifiers": [{"nameIdentifier": "163964", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Morii, Toshihiro"}]}]}, "item_7_publisher_7": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "新潟大学農学部"}]}, "item_7_select_19": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_select_item": "publisher"}]}, "item_7_source_id_11": {"attribute_name": "書誌レコードID", "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": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "森, 敬幸"}], "nameIdentifiers": [{"nameIdentifier": "163959", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "岡口, 真紀"}], "nameIdentifiers": [{"nameIdentifier": "163960", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "森井, 俊広"}], "nameIdentifiers": [{"nameIdentifier": "163961", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2019-08-20"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "55_1_57-65.pdf", "filesize": [{"value": "599.3 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 599300.0, "url": {"label": "55_1_57-65.pdf", "url": "https://niigata-u.repo.nii.ac.jp/record/28504/files/55_1_57-65.pdf"}, "version_id": "78a98410-8dc1-4ff8-8dd1-28bf2bfd658a"}]}, "item_keyword": {"attribute_name": "キーワード", "attribute_value_mlt": [{"subitem_subject": "魚群行動", "subitem_subject_scheme": "Other"}, {"subitem_subject": "ニュートン力学モデル", "subitem_subject_scheme": "Other"}, {"subitem_subject": "水槽実験", "subitem_subject_scheme": "Other"}, {"subitem_subject": "タナゴ", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Schooling behavior of fish", "subitem_subject_scheme": "Other"}, {"subitem_subject": "Newtonian dynamics model", "subitem_subject_scheme": "Other"}, {"subitem_subject": "water tank experiment", "subitem_subject_scheme": "Other"}, {"subitem_subject": "bitterling", "subitem_subject_scheme": "Other"}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "jpn"}]}, "item_resource_type": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "水槽実験による魚群行動の観察と数理モデル化", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "水槽実験による魚群行動の観察と数理モデル化"}, {"subitem_title": "水槽実験による魚群行動の観察と数理モデル化", "subitem_title_language": "en"}]}, "item_type_id": "7", "owner": "1", "path": ["456", "1612"], "permalink_uri": "http://hdl.handle.net/10191/25151", "pubdate": {"attribute_name": "公開日", "attribute_value": "2014-02-13"}, "publish_date": "2014-02-13", "publish_status": "0", "recid": "28504", "relation": {}, "relation_version_is_last": true, "title": ["水槽実験による魚群行動の観察と数理モデル化"], "weko_shared_id": null}