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The efficiency and stability of farm management there can be improved by grouping small, scattered farms and the use of mechanical harvesting contractors. For efficient machinery operation, it is necessary to optimize the work plan. Agricultural work can be planned by recording machinery operations in the fields and analyzing the data. To do this, we mounted a digital tachograph system, as widely used in the transportation industry, on a small sugar cane harvester to record the work of the harvester. Using engine revolution data, it was possible to record the working conditions of the harvester precisely. Using GPS data, it was possible to measure the area harvested with an error of :S8%. The harvest volume was estimated from images obtained with a digital camera. The working efficiency of this harvester over the course of a day proved to be low, at approximately 0.4, compared with typical values of 0.6-0.85 for common agricultural machinery; the field working efficiency was as low as 0.35. The likely explanation for the low efficiency is the use of a one-way harvest in back and forth motions.","subitem_description_type":"Other"},{"subitem_description":"\u8ad6\u6587","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"\u8fb2\u696d\u60c5\u5831\u5b66\u4f1a"},{"subitem_1522300295150":"en","subitem_1522300316516":"Japanese Society of Agricultural Informatics"}]},"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/20.500.12000/37205"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"0916-9482"},{"subitem_1522646500366":"NCID","subitem_1522646572813":"AN10481161"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"\u8fb2\u696d\u60c5\u5831\u7814\u7a76"},{"subitem_1522650068558":"en","subitem_1522650091861":"Agricultural Information Research"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2015","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"111","bibliographicPageStart":"101","bibliographicVolumeNumber":"24"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_1617265215918":{"attribute_name":"Version Type","attribute_value_mlt":[{"subitem_1522305645492":"AM","subitem_1600292170262":"http://purl.org/coar/version/c_ab4af688f83e57aa"}]},"item_1617353299429":{"attribute_name":"Relation","attribute_value_mlt":[{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"http://doi.org/10.3173/air.24.101"}}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"Vol24No4p101_figure.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2008695/files/Vol24No4p101_figure.pdf"},"version_id":"1dc45b27-33d9-4450-97e1-87b8ce5ac111"},{"accessrole":"open_access","filename":"Vol24No4p101.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2008695/files/Vol24No4p101.pdf"},"version_id":"b2bf8f1f-0c37-4b07-ac75-0d305153646a"}]},"item_title":"\u8eca\u8f09\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u3092\u7528\u3044\u305f\u30b5\u30c8\u30a6\u30ad\u30d3\u53ce\u7a6b\u6a5f\u306e\u4f5c\u696d\u8a18\u9332\u3068\u4f5c\u696d\u80fd\u7387\u5206\u6790","item_type_id":"15","owner":"1","path":["1642838338003","1642838407312"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2017-09-19"},"publish_date":"2017-09-19","publish_status":"0","recid":"2008695","relation_version_is_last":true,"title":["\u8eca\u8f09\u60c5\u5831\u30b7\u30b9\u30c6\u30e0\u3092\u7528\u3044\u305f\u30b5\u30c8\u30a6\u30ad\u30d3\u53ce\u7a6b\u6a5f\u306e\u4f5c\u696d\u8a18\u9332\u3068\u4f5c\u696d\u80fd\u7387\u5206\u6790"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T04:07:24.123681+00:00"}