Travelers walk by airplanes with Southwest Airlines on the tarmac at the Baltimore/Washington International Thurgood Marshall Airport. Anna Moneymaker Anna Moneymaker/Getty Images Travel has a way of ...

Abstract: A colored traveling salesman problem (CTSP) can subtly and thoroughly depict the homogeneity of salesmen and the assignment relationships between them and cities by using colors. It has been ...

Abstract: Recent studies have been conducted actively on scheduling in a parcel delivery system using a truck and drones to deliver parcels more effectively. In logistics, it is necessary to provide ...