We focus on some single machine scheduling problems for which a set of new jobs have to be scheduled after a schedule of old jobs has been set. Each new and old job belongs to a family and changing the production from one family to another requires a setup. The initial schedule of old jobs is...

This study examines differences between subjects with zero, one or two or more new diseases in a period of three years, with regard to demographic characteristics, socioeconomic status, life style, medical family history and current diseases in the family, psychological and sociological...