Two results in a recent paper by Wang and Cheng [Wang, J-B and TCE Cheng (2007). Asia-Pacific Journal of Operational Research, 24, 245-261] are incorrect because job processing times are variable due to both deteriorating jobs and learning effects, which is not taken into account by the authors. In this note, we show by a counter-example that the published results are incorrect.
- flow shop deteriorating jobs
- learning effect
- single machine
ASJC Scopus subject areas
- Management Science and Operations Research