A single machine scheduling problem with delivery time is considered. Job’s delivery time has deterioration effect. For the same processing time model of minimizing different objectives, it is given optimal sequences, respectively. For the same deterioration ratio model, we also give optimal sequences for different objectives. Mathematics Subject Classification: 91A35

Early Warning Score Systems assign scores to a patient’s vital signs to detect adverse events in order to secure timely medical response. However, most systems do not account for variations in vital signs due to aging changes or sex differences, which affects the accuracy of current systems for different deteriorating patient sub-groups. We aimed to develop an Ageand Sex-Based Early Warning Sco...

This paper focuses on single machine scheduling subject to machine deterioration. The current maintenance state of the machine is determined by a maintenance level. While jobs are processed this maintenance level drops by a certain, possibly job-dependent, amount. A maintenance level of less than zero is associated with the machine’s breakdown and is therefore forbidden. Consequently, schedule ...

The quality of maintenance is an important parameter in the performance of industrial production plants. Good monitoring of the deterioration in rotating machinery can result in reduced maintenance costs by minimizing the number of bad judgments and decreasing in the number of spare parts. An effective system of maintenance should be able to monitor parameters such as vibration, temperature, oi...