This paper investigates a mixed bundling problem in the wireless telecommunication business. Customers can buy cellular phones at a discount price if they subscribe to a service plan with the price above a threshold. We have proposed using nonlinear mixed-integer programming to determine the...

We consider a single-machine scheduling problem involving both the due date assignment and job scheduling under a group technology environment. The jobs (orders) of customers are classified into groups according to their production similarities in advance. To achieve production efficiency and...

In this paper we consider the single-machine scheduling problem with rejection. Each job has an arrival time, a processing time and a rejection penalty. The objective is to minimize the sum of the makespan of the accepted jobs and the total rejection penalty of the rejected jobs. First, we...

This paper considers the problem of scheduling deteriorating jobs and due date assignment on a single machine. The actual processing time of a job is a linear increasing function of its starting time. The problem is to determine the optimal due dates and the processing sequence simultaneously to...

An advantage of collective wage agreement is that search and business-stealing externalities can be internalized. A disadvantage is that it takes more time before an optimal allocation is reached because more productive firms (for a particular worker type) can no longer signal this by posting...