The Integrated Multisatellite Retrievals for GPM (IMERG) is designed to derive precipitation by merging data from all the passive microwave (PMW) and infrared (IR) sensors. While input source errors originating PMW IR sensors are important, their structure, characteristics, algorithm improvement remain unclear. Our study utilized a four-component error decomposition (4CED) method systematic ran...

In this study, a two echelons supply chain system in which a supplier is producing perishable product and distribute it to multiple customers is considered. By allowing lateral transshipment mechanism, it is also possible to deliver products to some customers in some periods in bulk, then customers using their own vehicle to transship goods between each other seeking further reduction in the ov...

This paper discusses the direction toward computational approaches for product variety design. Product variety design here refers to an engineering challenge for designing multiple models simultaneously. This paper de nes the formal representation of product variety design, and proposes a structure of design tasks involved in product variety. The analysis reveals several characteristics of prod...