/ε) heuristic to solve the problem with a worst-case bound of 1.5 + ε, where ε > 0 can be any small given constant. This improves … upon the worst-case bound 2−1m of the heuristic presented by Bartal et al. (Bartal, Y., Leonardi, S., Marchetti …

is derived and an upper bound is calculated using a novel constructive heuristic. The quality of the approach is tested …

the number of on-time jobs. As the problem is NP-hard, we develop a heuristic to tackle it by incorporating the backward … constraint. We show that our heuristic has a worst-case ratio bound of 4/3 and the bound is tight. …

instances, we propose an asymptotically optimal heuristic procedure and a lower bound on the makespan value, which produce …

. Some results from the simulation experiments are also presented. They demonstrate the applicability of the heuristic and …

research, various exact and heuristic solution procedures have been developed for different versions of the so-called assembly …

-ahead strategy heuristic to simultaneously assign a set of pre-defined requests to the lifts and the order in which they will be …

In this paper we propose a heuristic for solving the problem of resource constrained preemptive scheduling in the two … minimization of makespan. The problem is NP-hard. The heuristic first sequences jobs on the machine at stage 1 and then solves the … sharing of the resources between the stages is taken into account is also derived. The performance of the heuristic evaluated …