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Transportation and logistics modeling 1

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Transportation and logistics modeling 1

  1. 1. Transportation and Logistics Modeling<br />Arab Academy for Science, Technology, and Maritime Transportation<br />
  2. 2. What to expect from the course<br />By the end of the course you will be able to use ProModel as a simulation tool to help in:<br />Providing a good solution to common problems in distribution and logistics such as: number of vehicles required, type of vehicles required, capacity, location of facilities, dispatching rule…..etc<br />Modeling of transportation and logistics for future planning.<br />
  3. 3. Examples of applications<br />A US based company wants to plan for the number of vehicles required and the capacity of them.<br />The company has two production locations : Oklahoma, and Seattle. Each has a production capacity of 500 Tons weekly.<br />The company targets four customer markets: San Francisco, Boston, Tampa, Minneapolis, and Phoenix<br />
  4. 4. Examples of applications<br />The company can build warehouse in 9 locations :Albuquerque, Boise, Chicago, New Orleans, Dallas, Saint Louis, Detroit, Salt Lake City, and Raleigh.<br />Previous data on the order pattern is known.<br />The problem:<br />Where to build warehouses? How large?<br />How many vehicle is required? <br />
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  9. 9. Solution Methods<br />Several ways of analyzing the problem<br />Try and error<br />Easy <br />Expensive<br />Carries a lot of risks<br />Analytical <br />Precise optimal solution<br />Difficult and requires skillful people<br />Not every case can be solved<br />Simulation<br />Trade off (easier than the analytical methods, but does not guarantee an optimal solution)<br />Heavily depends on the data analysis<br />
  10. 10. Modeling<br />Modeling is abstraction of reality.<br />Often Models deliberately emphasize one part of reality at the expense of other parts.<br />Whereas models are mathematical, logical, or some other structured representation of reality, simulation is the specific application of models to arrive at some outcome.<br />Simulation is imitation.<br />
  11. 11. Modeling<br />Modeling and simulation science, is a mathematical representation of something—a person, a building, a vehicle, a tree—any object. A model also can be a representation of a process—a weather pattern, traffic flow, air flowing over a wing.<br />Models are created from a mass of data, equations and computations that mimic the actions of things represented. <br />Models usually include a graphical display that translates all this number crunching into an animation that you can see on a computer screen or by means of some other visual device. <br />
  12. 12. Simulation<br />Live simulations <br />Typically involve humans and/or equipment and activity in a setting where they would operate for real. <br />Time is continuous, as in the real world. <br />Testing a car battery using an electrical tester.<br />Virtual simulations <br />Typically involve humans and/or equipment in a computer-controlled setting. <br />Time is in discrete steps, allowing users to concentrate on the important stuff, so to speak. <br />A flight simulator falls into this category.<br />
  13. 13. Simulation<br />Constructive simulations <br />Typically do not involve humans or equipment as participants. <br />Rather than by time, they are driven more by the proper sequencing of events. The anticipated path of a hurricane might be "constructed" through application of temperatures, pressures, wind currents and other weather factors. <br />Science-based simulations are typically constructive in nature.<br />
  14. 14. Tentative Schedule<br />
  15. 15. Attendance<br />Attendance is mandatory<br />After three time unexcused absence, you will receive a warning.<br />After the fourth time, you will be denied access to the final exam.<br />Accepted absence excuses:<br />Sickness: A report sign by the Academy doctor<br />Sports event: Formal union letter<br />Sports champions should provide the lecturer with their formal training/ championship schedule no later than the third week.<br />You are allowed in into the lecture hall for up to 10 minutes past the start of the lecture. No exception.<br />
  16. 16. Sections<br />Attendance is mandatory<br />Section attendance and assignments hold 10% of your grades<br />Assignments are due in one week from the announcement day.<br />No late assignments are allowed, no exception.<br />Please bring your laptop<br />Email is the primarily communication method adopted in the course. Please provide us with a valid email within the first 2 weeks and check the email on a regular basis.<br />When sending an email, include AAST in the header, and include all the necessary information in the body.<br />
  17. 17. Exams<br />There are three exams:<br />7th week exam: 30% of your grades<br />The TA will solve the exam the following week and will provide you with your answer sheet.<br />The schedule will be announced by the 5th week<br />12th week exam: 20% of your grade, could be a project depending on the class progress<br />Final exam : 40% comprehensive exam<br />The official grading system will be used.<br />The lecturer preserves the right to normalize the result if there is a bias provided that the student shows an adequate participation in the course.<br />
  18. 18. Questions/comments<br />khaledseif@hotmail.com<br />karim.mohamed@aast.edu<br />