7ENT1127-0105 Operations Research and Logistics Assignment - University of Hertfordshire

Assignment Title - Simulation Modelling

Learning Outcomes - This Assignment assesses the following module Learning Outcomes:

1. Evaluate quantitative modelling concepts for problem solving and decision making in a logistics context.

2. Critique the logical process of modelling complex decision problems.

3. Derive solution(s) using a suitable software package when required.

4. Apply techniques and practice to model real world logistics problems.

5. Critically analyse and report results individually and/or in a group.

Assignment Tasks - Manufacturing simulation uses computers to make virtual models of manufacturing processes and systems, typically with the purpose of collecting important information for use in decision making. Operations researchers and managers uses a variety of simulation software in their practice, one of which is the Witness Simulation software.

In this assignment you are required to produce a report that addresses the following tasks.

1. Explain the difference between a good decision and a bad decision. Briefly discuss how confirmation bias can affect the quality of decisions.

2. With reference to Case Study A on Pages 4 and 5 below, you are required to use Witness Simulation software to evaluate decisions relating to due date specification in a job shop. You are required to use a trial-and-error method to determine good due date specification for the jobs arriving the case study's job shop. Use delivery performance in terms of total late/early completion penalty costs to evaluate your due date specification. Start the simulation with an empty shop and run the simulation until 15,000 minutes. Data on the first 5,000 minutes should be discarded to allow for warm-up period and attainment of steady-state conditions. Clearly state any assumptions used in the simulation.

3. Critically discuss the results of the simulation carried out in Question 2 above and the performance of the specified due date.

Note - Submission for this assignment must be a written report. The report must contain no more than 2500±10% words including any diagrams, calculations, figures and/or tables where appropriate.

Attachment:- Simulation Modelling Assignment File.rar