The trade-off between egg size and number is one of the most discussed concepts of the life-history theory. However, little is known about social factors influencing this trade-off in eusocial insects, where queens and workers share energy investment in the brood. During the colony-founding...

The present study focuses on two major types of fare collection systems for public transportations, barrier and barrier-free, and provides a mathematical framework to evaluate optimal choices between them, i.e., which system can be more profitable for a transit agency. In particular, we consider...

Purpose This paper aims to show that systems intelligence (SI) can be a useful perspective in knowledge management, particularly in the context of the socialization, externalization, combination and internalization (SECI) model. SI is a recently developed systemic concept, a certain kind of...