Albeit the widely-recognized importance of open innovation, its distinction from other novel forms of innovation, such as open source software, innovation contest, and mass customization is not clearly addressed. The purpose of this paper is to categorize web-based interactive innovation (i.e.,...

The importance of flexibility has long been known in operations management and it is becoming a central issue in supply chain management. However, the terminology and methodology differ among researchers, leading to unsystematic theories. This paper surveys the recent high-quality literature,...

This paper considers a time-inconsistent stopping problem in which the inconsistency arises from non-constant time preference rates. We show that the smooth pasting principle, the main approach that has been used to construct explicit solutions for conventional time-consistent optimal stopping...

Related to several efforts by governments to attain United Nations Sustainable Development Goals, subsidy vouchers are used to provide monetary support to income-eligible (IE) families who cannot afford child care. However, IE families are often unable to accept an offered voucher due to an...

We propose a unified structural credit risk model incorporating insolvency, recovery and rollover risks. The firm finances itself mainly by issuing short- and long-term debt. Short-term debt can have either a discrete or a more realistic staggered tenor structure. We show that a unique threshold...