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Archive for October 2006

Simulation - Techniques, Domains, Issues, Conferences

Posted on Thursday, October 26, 2006 at 8:45 PM by Malcolm

Simulation Techniques

  • Symbiotic Simulation
  • Parallel Simulation
  • Agent-based Simulation

Types of Simulation

  • Semiconductor Simulation
  • Container Port Simulation
  • Defence Simulation - Data Farming & Automated Red Teaming

Issues

Conferences



Edited on: Tuesday, November 11, 2008 11:37 AM

Posted in General (RSS), Research (RSS)

Stowage Planning for Container Ships - Terminology, Issues, Videos, Magazine, References

Posted on Monday, October 23, 2006 at 5:59 PM by Malcolm

Terminology

  • A container ship has its capacity measured in TEU, or Twenty-foot Equivalent Units. For example, a 8000TEU ship can carry up to 8000 twenty-foot containers. A ship contains a list of bays, usually numbered from the front of the ship to the back of the ship. Bays are divided in odd bays and even bays. Even bays are forty-footer bays and can be used to stow forty-foot containers. Each Even bay is made up of two odd bays. For example, bay 2 is made up of bay 1 and bay 3. So in this case there is no bay 4 and the next even bay is bay 6 which is made up of bay 7 and bay 5.

    In each bay, each vertical stack of containers is call a row. The numbering of the rows start from the center of the ship and move outwards. One side of the ship will have the set of odd row numbers {1, 3, 5 ...}, while the other side of the ship will have the set of even row numbers {2, 4, 6 ...}.

    For each row of containers in a bay, the vertical position of the container is indicated by its tier number. Tiers are numbered from the bottom of the ship upwards. There is a convention that tiers above the hatchcover are numbered starting from 80.

    Containers are stowed in a container ship based on a 6-digit code to represent the locations on a ship. The first two numbers indicate which bay of the ship the container is in. The second two numbers indicate which row of the bay the container is in. The last two number indicate which tier of the ship the container is in. For example, a location code of "060402" indicates a ship location in bay 06, row 04 and tier 02.

Issues

  • Maximization of Stability - GM, bending moment, heel, trim
  • Minimization of Overstow/rehandling - forced overstow, volunteered overstow
  • Consideration of Hatch Covers
  • Optimization for best Crane Splits - crane intensity, blocking
  • Stowage of Out-of-Guage Containers
  • Consideration of Hazardous Cargos
  • Consideration of Port Rotation
  • Consideration of Balast Management - zero balast

Videos

Magazine

  • Digital Ship: Digital Ship is the commercial maritime world’s authority on satellite communications, software, navigation technology and computer based training.

References

  • Ambrosino D., Sciomachen A. and Tanfani E, "Stowing a containership: the master bay plan problem", Transportation Research Part A: Policy and Practice, Volume 38, Number 2, February 2004 , pp. 81-99(19)
  • Mordecai Avriel, Michal Penn, Naomi Shpirer and Smadar Witteboon, "Stowage planning for container ships to reduce the number of shifts", Annals of Operations Research, Volume 76, Number 10, January 1998, pp. 55-71
  • Dirk Steenken, Thomas Winter and Uwe T. Zimmermann, "Stowage and Transport Optimization in Ship Planning", Online optimization of large-scale systems, pp 731-745. Springer, Berlin.
  • I.D. Wilson and P.A. Roach, "Principles of Combinatorial Optimization Applied to Container-Ship Stowage Planning", Journal of Heuristics, 1999, Volume 5, Issue 4, pp. 403-418
  • I.D. Wilson and P.A. Roach, "Container stowage planning: a methodology for generating computerised solutions", The Journal of the Operational Research Society, Volume 51, Number 11, pp. 1248-1255
  • Feng Li, Chunhua Tian, Rongzeng Cao and Wei Ding, "An Integer Linear Programming for Container Stowage Problem", ICCS 2008, Part I, LNCS 5101, pp. 853-862, 2008.
Edited on: Monday, July 13, 2009 5:40 PM

Posted in General (RSS), Research (RSS)

PhD Scholarship, Postdoc Fellowship - NSS, AGS, SINGA, SMF

Posted on Friday, October 06, 2006 at 1:30 PM by Malcolm

The following is a list of scholarships to support studying PhD in Singapore. Please email me if you need assistance in applying for any one of them.

Scholarships

Fellowships

Edited on: Monday, November 17, 2008 10:23 AM

Posted in General (RSS), Research (RSS)