This paper considers the scheduling problems with the objective of minimizing the total completion time on two parallel identical machines with given unavailable periods. The jobs are assumed to be nonresumable. If there is one unavailable period on one of the two machines, we prove that SPT has...

This paper considers coordinated scheduling on parallel identical machines with batch delivery. Jobs are first processed on m parallel and identical machines in the manufacturing facility and then delivered to the customer in batches. There are v identical transporters that can carry up to c...

In this paper, we investigate the capacitated two-parallel machines scheduling problem, where one machine is only available for a special period of time after which it can no longer process any job while the other machine is continuously available. Our objective is to minimize the completion...

This paper considers a parallel-machine scheduling problem with machine maintenance. There are unavailable periods on each of the first k machines, and the remaining m - k machines are always available, where 1 [less-than-or-equals, slant] k [less-than-or-equals, slant] m is an...

Using a Mortensen-Pissarides search-and-matching framework, this paper investigates the importance of search frictions in determining the welfare and distributional effects of tax reforms that re-allocate the tax burden from capital to labour income. Calibrating the model to the UK economy, we...

This paper evaluates the e¤ects of policy interventions on sectoral labour markets and the aggregate economy in a business cycle model with search and matching frictions. We extend the canonical model by including capital-skill complementarity in production, labour mar- kets with skilled and...

This paper identifies a limit to arbitrage that arises because firm value is endogenous to the exploitation of arbitrage. Trading on private information reveals this information to managers and improves their real decisions, enhancing fundamental value. While this feedback effect increases the...