A QUEUING MODEL FOR CARGO GENERATION IN PORT

A system is considered where ships of constant capacity sail from a port with a fixed interdeparture time. It is often assumed that units of cargo arrive at the port according to some well-known probability distribution. Usually, the Poisson distribution is assumed because it describes reasonably well the arrival process. This distribution corresponds to the case of random arrivals with a constant mean, which is close to most real situations. It cannot be assumed, however, that all units which have arrived at the port will be carried by a single ship. It is possible that, for some of the units, space will not be available on the present sailing; and so the cargo will have to wait until the next sailing. The problem is that it cannot be assumed that a unit of cargo will always wait until space is available. This unit might well be carried by another shipping company which offers a more convenient sailing schedule. This discussion is concerned with a mathematical model which can describe reasonably well the arrival pattern as well as the balking process encountered in this problem.

• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Naval Architecture and Marine Engineering
  Cambridge, MA  United States  02139
• Authors:
  • Novaes, A
  • Frankel, E G
• Publication Date: 1964-6

Media Info

• Pagination: 49 p.

Subject/Index Terms

• TRT Terms: Cargo handling; Freight transportation; Queuing theory
• Uncontrolled Terms: Cargo flow
• Old TRIS Terms: Cargo movement; Queueing theory
• Subject Areas: Data and Information Technology; Freight Transportation; Marine Transportation;

Filing Info

• Accession Number: 00026766
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: MIT-DNA-64-8
• Contract Numbers: MA-2710
• Files: TRIS
• Created Date: Mar 2 1973 12:00AM