This case study examines the functions of the text mode in a predominantly voice-only SCMC tutoring session. Using conversation analysis with attention paid to the sequential and holistic unfolding of both text and voice turns, the authors found that the bimodal text-and-voice mode was employed...

The purpose of this paper is to study the periodic arc-routing problem when the arcs of a network behave as customers, and sufficient material is delivered so that each achieves its desired inventory level. Therefore, routing and inventory decisions are made simultaneously. Applications include...

We studied the following organization for the letter and parcel pick-up and delivery problem in an urban environment: the working day is divided in time periods during which each vehicle starts from a sorting center, travels to a precise area of the region, picks up and delivers letters and...