{"created":"2024-06-10T08:45:34.241686+00:00","id":2007101,"links":{},"metadata":{"_buckets":{"deposit":"df3e2fea-7a5f-48a2-bff8-5e26dd989f12"},"_deposit":{"created_by":10,"id":"2007101","owners":[10],"pid":{"revision_id":0,"type":"depid","value":"2007101"},"status":"published"},"_oai":{"id":"oai:fra.repo.nii.ac.jp:02007101","sets":["12:14:1716950799012"]},"author_link":[],"item_10002_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1962-03","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"tnf_k_20_28","bibliographicNumberOfPages":"5","bibliographicPageEnd":"32","bibliographicPageStart":"28","bibliographicVolumeNumber":"20","bibliographic_titles":[{"bibliographic_title":"東北海区水産研究所研究報告","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of Tohoku Regional Fisheries Research Laboratory","bibliographic_titleLang":"en"}]}]},"item_10002_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"カツオ漁業に於て、群の餌付が非常に重大視されている。併しこの餌付の判定については、全く漁業者の判断にまかせられ、又つの判断の基準は全く不明であった。そこで、餌付の程度を漁獲曲線の上から次の様に求めた。魚群の構成尾数N・餌付係数λの群について操業した場合、漁獲尾数ωは、ω＝N[1-(1+λt)e-λt]0.3=Nλ2te-λtで示される。之からλ及Nを各群について求めると、漁業者の餌付判断は、同程度の餌付を持つ魚群でも、大群程餌付良好と判定され易く、小群では余程餌付が良い場合以外不良と判定され易い傾向がある。又漁船が操業している群は、Nλ2＞c'(一定値)の条件が必要で、その為に小群の場合餌付不良群は操業対象になり難い。殊に1,000尾以下の群では、餌付良好群のみが操業され、不良群は操業されず報告もないので、λの平均値は統計的に有意差があり、従って今後餌付の問題を取扱う場合には、之等の群を取除く必要がある。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_10002_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東北海区水産研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"Tohoku Regional Fisheries Research Laboratory","subitem_publisher_language":"en"}]},"item_10002_relation_16":{"attribute_name":"情報源","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"tnf_k_20_28","subitem_relation_type_select":"Local"}}]},"item_10002_relation_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_relation_name":[{"subitem_relation_name_language":"ja","subitem_relation_name_text":"日本農学文献記事索引(agriknowledge)"}],"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://agriknowledge.affrc.go.jp/RN/2010843960","subitem_relation_type_select":"URI"}}]},"item_10002_source_id_11":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00167637","subitem_source_identifier_type":"NCID"}]},"item_10002_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0049-402X","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"八百, 正和","creatorNameLang":"ja"}],"familyNames":[{"familyName":"八百","familyNameLang":"ja"}],"givenNames":[{"givenName":"正和","givenNameLang":"ja"}]}]},"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":"カツオの餌付の数理的取扱い","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"カツオの餌付の数理的取扱い","subitem_title_language":"ja"}]},"item_type_id":"10002","owner":"10","path":["1716950799012"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-06-10"},"publish_date":"2024-06-10","publish_status":"0","recid":"2007101","relation_version_is_last":true,"title":["カツオの餌付の数理的取扱い"],"weko_creator_id":"10","weko_shared_id":-1},"updated":"2025-02-04T00:22:06.685850+00:00"}