About KURATA Hisashi
About University of Tsukuba
About OVEZMYRADOV Berdymyrat
About University of Tsukuba, Graduate School
About MEUTHIA Yumi
About University of Tsukuba, Graduate School
About 日本経営工学会論文誌
About computer program
About strategy
About durable goods
About property
About product design
About specification
About customer satisfaction
About mathematical model
About sales strategy
About goods
About add-on
About functionality
About mathematical model
About durable product
About add-on functionalities
About product design
About over-specification
About consumer durable product
About option sales strategy
About Marketing
About Mathematical programmings
About 顧客
About アドオン
About 販売戦略
About 耐久消費財
About 機能性
About 水準