This paper aims to analyze how and why Japan's new coronavirus contact tracking and tracing application has not been supported by people and in effect been ineffective in preventing the spread of infection of COVID-19. Ministry of Health, Labor and Welfare of Japan released COCOA on June 17,...

Previous studies suggested that a monopoly durable goods seller can useleasing to effectively avoid the time-inconsistent problem raised byCoase Conjecture. This paper extends those previous works by examiningthe monopoly seller's selling and leasing strategy for a special type ofdurable good...