in this paper, a genetic algorithm is presented for an identical parallel-machine scheduling problem with family setup time that minimizes the total weighted flow time ( ). no set-up is necessary between jobs belonging to the same family. a set-up must be scheduled when switching from the processing of family i jobs to those of another family j, i  j, the duration of this set-up being the sequ...

In A Tale of Two Viruses, Neeraja Sankaran traces the parallel histories two groups viruses: bacteriophages, which infect bacteria, and sarcoma agents, cause cancer. Research into these distinct proved to radically reshape what scientists thought they knew, lay foundations for our current understanding viruses.