Mathematical Systems Optimization

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.

• Link to group homepage

	Prof. TANAKA Shunji E-mail：shunji.tanaka [at] okayama-u.ac.jp operations research, mathematical systems optimization, scheduling, logistics   Directory of Researchers

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.

	Assoc. Prof. YANAGAWA Yoshinari E-mail: yanaga-y [at] cc.okayama-u.ac.jp Decision Modeling, Production Management, Ergonomics Directory of Researchers

The problem of bin packing has conventionally been considered with the aim of maximizing the loading rate; it is, however, necessary to consider not only maximizing the loading rate in a delivery vehicle but also the loading/unloading sequence with the development of e-commerce. We are studying how to load parcels onto a parcel delivery vehicle, taking into account parcels that are unloaded from the rear and a side of the delivery vehicle.