Single-particle electron cryomicroscopy (cryo-EM) is a powerful method for determining the structures of biological macromolecules. With automated microscopes, cryo-EM data can often be obtained in a ...

This paper introduces a network design problem with a structure that is encountered in many transportation processes. The general organization of these systems is as follows. Freight has to be ...

The purpose of this paper is to evaluate a heuristic procedure for solving the resource-constrained project scheduling problem. Projects that involve completing a sequence of well defined activities, ...