In this paper, we study a two-flight model where there are two flights between two cities in a day (e.g., one departs at 9:00 am and another at 11:00 am) and booking requests in each fare class arrive according to a random process. There are three types of booking requests: the first and...

This paper investigates and identifies the probable supply chain related risks in Ghana agricultural supply chain and further seeks the severity of these risks based on engineering judgments and historical records. In addition, this paper probes into participants¡¯ ability level to...

This paper presents a formal model that characterizes the political mechanisms of demographic change, establishing a critical link in economic development. We demonstrate that fertility decisions are determined by three fundamental political variables: political stability, political capacity and...

This paper investigates the current control for a grid-connected direct-drive wind energy conversion system (DDWECS) with a permanent magnet synchronous generator (PMSG), which utilizes a back-to-back pulse width modulation (PWM) converter. For the machine-side, the controller adopts a current...

Many companies are facing the challenges of dynamic market and capital shortage. To overcome these challenges, we examine the case in which the company develops early sales strategy that entices customers to commit to their orders at a discount price prior to the selling season. The time between...