{"created":"2021-03-01T06:43:09.261415+00:00","id":25213,"links":{},"metadata":{"_buckets":{"deposit":"1d27068b-4a06-491a-a333-499e2d72fb36"},"_deposit":{"id":"25213","owners":[],"pid":{"revision_id":0,"type":"depid","value":"25213"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00025213","sets":["27:2466:2467:2473","9:504:2469:2474"]},"item_4_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Productivity, operational cost, and optimal forest road density of yarding operations with two different tower yarders"}]},"item_4_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2016-02-24","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"17","bibliographicPageStart":"1","bibliographicVolumeNumber":"134","bibliographic_titles":[{"bibliographic_title":"東京大学農学部演習林報告"}]}]},"item_4_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"オーストリアMAYR-MELNHOF FORSTTECHNIK 社製WANDERFALKE U-AM-2to（以下WF と略記）とIHI 建機社製NR301（以下NR）の作業観測を行い，その労働生産性と作業費用，最適路網密度について分析した。最大集材距離が長くなるほど労働生産性は下がるが，WF とNR を比較すると，サイクルタイムの影響を受けて最大集材距離が長くなるほどWF の方が労働生産性が高く，また荷掛け材積が大きくなるほど両者の差は大きくなった。WF はNRに比べて機械価格が高く，架設撤去に時間を要したため，最大集材距離が123m 以下の列状間伐と最大集材距離が88m 以下の皆伐ではNR が費用面で有利と計算された。タワーヤーダを導入して作業費用を低減するには，長期にわたって路網をくり返し使用し，1 回当りの荷掛け材積を大きくするのが有用である。","subitem_description_type":"Abstract"},{"subitem_description":"The productivity, operational cost and optimal forest road network density for WANDERFALKE U-AM-2to (WF) and NR301 (NR) industrial tower yarders were analyzed. The results showed clearly that productivity decreased as the yarding distance increased. The productivity of the WF became greater than that of the NR as the yarding distance increased because of the effect of the cycle time. This difference increased as the load volume increased. As the WF yarder had a higher purchase price and it took more time to set up compared to the NR, the NR yarder became advantageous (yen/m3) when the maximum yarding distance was less than 123 m in strip-thinning and 88 m in clear-cutting. Therefore, in order to introduce tower yarders to achieve cost reduction, it is effective to increase the load volume during operations and to utilize the road network repeatedly for a long period.","subitem_description_type":"Abstract"}]},"item_4_description_6":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"論文","subitem_description_type":"Other"}]},"item_4_full_name_3":{"attribute_name":"著者別名","attribute_value_mlt":[{"nameIdentifiers":[{"nameIdentifier":"53247","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Kim, Minkyu"}]},{"nameIdentifiers":[{"nameIdentifier":"53248","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Sakurai, Rin"}]},{"nameIdentifiers":[{"nameIdentifier":"53249","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Nitami, Toshio"}]},{"nameIdentifiers":[{"nameIdentifier":"53250","nameIdentifierScheme":"WEKO"}],"names":[{"name":"Sakai, Hideo"}]}]},"item_4_publisher_20":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京大学大学院農学生命科学研究科附属演習林"}]},"item_4_source_id_10":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00162451","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_8":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03716007","subitem_source_identifier_type":"ISSN"}]},"item_4_text_21":{"attribute_name":"出版者別名","attribute_value_mlt":[{"subitem_text_value":"The University of Tokyo Forests"}]},"item_4_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学大学院農学生命科学研究科森林科学専攻"},{"subitem_text_value":"宮崎大学農学部森林緑地環境科学科"},{"subitem_text_value":"Department of Forest Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo"},{"subitem_text_value":"Department of Forest and Environmental Sciences, Faculty of Agriculture, University of Miyazaki"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"金, 旼奎"}],"nameIdentifiers":[{"nameIdentifier":"53243","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"櫻井, 倫"}],"nameIdentifiers":[{"nameIdentifier":"53244","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"仁多見, 俊夫"}],"nameIdentifiers":[{"nameIdentifier":"53245","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"酒井, 秀夫"}],"nameIdentifiers":[{"nameIdentifier":"53246","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":"2017-06-09"}],"displaytype":"detail","filename":"esrh134001.pdf","filesize":[{"value":"1.1 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"esrh134001.pdf","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/25213/files/esrh134001.pdf"},"version_id":"74ce63a0-ce32-448f-b342-1a1fb09a347d"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"タワーヤーダ","subitem_subject_scheme":"Other"},{"subitem_subject":"集材作業","subitem_subject_scheme":"Other"},{"subitem_subject":"労働生産性","subitem_subject_scheme":"Other"},{"subitem_subject":"作業費用","subitem_subject_scheme":"Other"},{"subitem_subject":"最適路網密度","subitem_subject_scheme":"Other"},{"subitem_subject":"tower yarder","subitem_subject_scheme":"Other"},{"subitem_subject":"yarding operation","subitem_subject_scheme":"Other"},{"subitem_subject":"productivity","subitem_subject_scheme":"Other"},{"subitem_subject":"operational cost","subitem_subject_scheme":"Other"},{"subitem_subject":"optimal forest road density","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":"異なる2 機種のタワーヤーダによる集材作業の労働生産性，費用と最適路網密度","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"異なる2 機種のタワーヤーダによる集材作業の労働生産性，費用と最適路網密度"}]},"item_type_id":"4","owner":"1","path":["2474","2473"],"pubdate":{"attribute_name":"公開日","attribute_value":"2016-06-09"},"publish_date":"2016-06-09","publish_status":"0","recid":"25213","relation_version_is_last":true,"title":["異なる2 機種のタワーヤーダによる集材作業の労働生産性，費用と最適路網密度"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T04:03:32.832069+00:00"}