{"id":1408,"date":"2023-07-18T11:47:14","date_gmt":"2023-07-18T02:47:14","guid":{"rendered":"https:\/\/www.elst.okayama-u.ac.jp\/en\/?page_id=1408"},"modified":"2025-07-31T16:15:49","modified_gmt":"2025-07-31T07:15:49","slug":"areas04_syst","status":"publish","type":"page","link":"https:\/\/www.elst.okayama-u.ac.jp\/en\/education\/mc-kikai\/areas04_syst\/","title":{"rendered":"Mathematical Systems Optimization"},"content":{"rendered":"<h4>&nbsp;<\/h4>\n<p><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-69 aligncenter\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas04_syst\/theme2.png\" alt=\"\" width=\"504\" height=\"277\">In the field of operations research, which is the mathematical and scientific process for better decision making for practical problems, we focus mainly on mathematical systems optimization to solve production, logistics and transportation problems. Specifically, we studies production scheduling problems in factories, stacking, premarshalling, and retrieval problems in warehouses, the three-dimensional truck loading problem considering the retrieval order for package delivery, and so on.<\/p>\n<ul>\n<li><a href=\"https:\/\/prodlab.sys.okayama-u.ac.jp\/\">Link to group homepage<\/a><\/li>\n<\/ul>\n<table class=\"el_table_responsive\" style=\"width: 100%\">\n<tbody>\n<tr>\n<th style=\"width: 20%\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas04_syst\/TANAKA_Shunji.png\" width=\"320\" height=\"408\"><\/th>\n<td style=\"width: 80%\">\n<ul>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Prof. TANAKA Shunji<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">E-mail\uff1ashunji.tanaka<span style=\"color: #0000ff\"> [at]<\/span> okayama-u.ac.jp<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">operations research, mathematical systems optimization, scheduling, logistics<br \/>\n<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-size: 12pt\"><a class=\"el_linkBtn\" href=\"https:\/\/soran.cc.okayama-u.ac.jp\/html\/5ed8f50cb15c62df2dfc967c90e0fcc1_en.html\">Directory of Researchers<\/a><\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>My research concern is constructing efficient algorithms for combinatorial optimization problems in production scheduling, logistics, and transportation systems. With the aid of mathematical programming, polyhedral study, graph and network algorithms, and so on, I am seeking to build a computational foundation for such hard optimization problems.<\/p>\n<hr>\n<table class=\"el_table_fix\" style=\"width: 100%\">\n<tbody>\n<tr>\n<th style=\"width: 20%\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/up_load_files\/areas\/areas04_syst\/yanagawa_face.jpg\" width=\"320\" height=\"408\"><\/th>\n<td style=\"width: 80%\">\n<ul>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Assoc. Prof. YANAGAWA Yoshinari <br \/>\n<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">E-mail: <span id=\"content_ousdb1_lp$002fitem$005b2$005d$002fsys_mail\">yanaga-y <span style=\"color: #0000ff\">[at]<\/span> <\/span>cc.okayama-u.ac.jp<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Decision Modeling, Production Management, Ergonomics\n<p><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\"><a class=\"el_linkBtn\" href=\"https:\/\/soran.cc.okayama-u.ac.jp\/html\/9ef9897ced8705f174506e4da22f6611_ja.html?k=%E6%9F%B3%E5%B7%9D\">Directory of Researchers<\/a>&nbsp; &nbsp;<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<div id=\"attachment_3296\" style=\"width: 310px\" class=\"wp-caption alignright\"><a href=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/07\/67920fcd3fd671e59e9566f46f55ff4d.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-3296\" class=\"wp-image-3296 size-medium\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/07\/67920fcd3fd671e59e9566f46f55ff4d-300x215.jpg\" alt=\"\" width=\"300\" height=\"215\" srcset=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/07\/67920fcd3fd671e59e9566f46f55ff4d-300x215.jpg 300w, https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/07\/67920fcd3fd671e59e9566f46f55ff4d.jpg 511w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-3296\" class=\"wp-caption-text\">Factory where automobiles are operated on AGVs<\/p><\/div>\n<p>I am researching how to increase resource productivity in manufacturing, service industries, public services, and other sectors. Specifically, I am working on topics such as work input sequence planning and inventory management in manufacturing plants, handling efficiency in delivery operations, and bicycle allocation and transportation planning in community cycle services.<\/p>\n<p>&nbsp;<\/p>\n<table class=\"el_table_fix\" style=\"width: 100%\">\n<tbody>\n<tr>\n<th style=\"width: 20%\"><a href=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/06629da4bc86b5d7b7c968895668a377.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-3067\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/06629da4bc86b5d7b7c968895668a377-240x300.jpg\" alt=\"\" width=\"240\" height=\"300\" srcset=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/06629da4bc86b5d7b7c968895668a377-240x300.jpg 240w, https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/06629da4bc86b5d7b7c968895668a377.jpg 248w\" sizes=\"auto, (max-width: 240px) 100vw, 240px\" \/><\/a><\/th>\n<td style=\"width: 80%\">\n<ul>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Asst. Prof. &nbsp;KAWAMOTO Takaki<br \/>\n<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">E-mail: t_kawamoto <span id=\"content_ousdb1_lp$002fitem$005b2$005d$002fsys_mail\"><span style=\"color: #0000ff\">[at]<\/span> &nbsp;<\/span>okayama-u.ac.jp<\/span><\/li>\n<li style=\"list-style-type: none;font-size: 12px;margin-left: -20px\"><span style=\"font-size: 12pt\">Operations Research\/Combinatorial Optimization\/Assignment Algorithms\n<p><\/span><\/li>\n<\/ul>\n<p><span style=\"font-size: 12pt\"><a class=\"el_linkBtn\" href=\"https:\/\/soran.cc.okayama-u.ac.jp\/html\/cef9cc3407cb897739313666b67f9f5f_en.html\">Directory of Researchers<\/a>&nbsp; &nbsp;<\/span><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p>I apply and propose v<a href=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/8dac848b248794e35458b595f106ab1d.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-3066\" src=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/8dac848b248794e35458b595f106ab1d-300x194.jpg\" alt=\"\" width=\"300\" height=\"194\" srcset=\"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/8dac848b248794e35458b595f106ab1d-300x194.jpg 300w, https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-content\/uploads\/sites\/2\/2025\/05\/8dac848b248794e35458b595f106ab1d.jpg 566w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>arious problem-solving methods in the field of Operations Research to develop approaches and systems that support decision-making and address real-world challenges. One of my main research themes involves collaborating with companies that operate e-commerce platforms. Specifically, I focus on designing algorithms that assign customer orders to appropriate stores by taking into account multiple factors.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: right\">Illustrative Diagram of the Research Concept<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; In the field of operations research, which is the mathematical and scientific process for better decisi [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":147,"menu_order":104,"comment_status":"closed","ping_status":"closed","template":"template-layout_single.php","meta":{"footnotes":""},"class_list":["post-1408","page","type-page","status-publish","hentry"],"aioseo_notices":[],"publishpress_future_action":{"enabled":false,"date":"2026-05-28 18:26:08","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/pages\/1408","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/comments?post=1408"}],"version-history":[{"count":18,"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/pages\/1408\/revisions"}],"predecessor-version":[{"id":3297,"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/pages\/1408\/revisions\/3297"}],"up":[{"embeddable":true,"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/pages\/147"}],"wp:attachment":[{"href":"https:\/\/www.elst.okayama-u.ac.jp\/en\/wp-json\/wp\/v2\/media?parent=1408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}