Modeling Detailed Operations

Modeling Detailed Operations

1. Modeling Approach

   • Combine the modeling constructs
     • Basic Process
       • System quickly and easily
     • Advanced Process
       • More detailed modeling capabilities
       • Additional modeling capabilities
     • Advanced Transfer
       • Material-Handling activities
       • Entity movement
     • Block
       • Lower level of modeling capability
       • Special-purpose modeling constructs
     • Elements
       • Experiment frame modules

2. New Modeling Issues

   • Rejections and Balking
     • Employ a Queue module from the Blocks Panel
       • Decide
         • Available, proceed and seize.
         • Not available, the entity is send to the balking section
       • Sieze
         • Available it continue to the system
         • Not available stay in the in the queue or leave the system
   • Three-way Decisions
     • Type of process
     • Parts based on probability
     • Re-compute the probabilities
     • Directions in the same decide module
   • Variables and Expressions
     • Variable
       • Module
         • Global variable
         • Initial values
       • Referenced
         • Name
         • Dimensional arrays
       • Can be reassigned during the simulation run.
     • Expression
       • Module
         • Define expressions
         • Associated values
       • Referenced
         • Names
         • Dimensional arrays
       • Evaluated and its numerical value is returned
   • Storage
     • Animate the presence of entities
     • Holds a non-ordered set of entities
     • Place an entity and then remove it.
       • Store an Unstore modules
       • Module that has a field to enter a Storage ID
     • Entity would be displayed on the animated Storage.
   • Terminating or Steady State
     • Terminating
       • Specific Starting conditions.
       • Stopping conditions.
     • Steady state

3. Building the model

   • Arrival Cutoff logic
   • System Exit and Run Setup
     • Record module, increment Completed Calls counter
     • Assign module, decrement Total WIP variable
   • Animation
     • Storage
       • Recording
       • Graphic
     • Plots
     • Queue
   • Technical Support call
     • Unstore for recording, product type selection
     • Decide module for product type
     • Process modules for tech-support service
       • Seize-Delay-Release
       • Tech Time
       • Seize, multi-unit Resource
   • Order-Status Calls
     • Delay block
     • Decide module
       • No sales person required
       • Sales person required
   • Sales Calls
     • Change Entity Type, Picture
     • Priority over order-status
   • Create Arrivals and direct to service
     • Arrivals with variable MaxCalls
     • Decide
       • MR
       • NR
     • Conditions

4. Inventar Simulation

   • System Description
     • Average ordering cost per day
     • Average holding cost per day
     • Average shortage cost per day
   • Simulation Model

5. Enhanced Call Center

   • Changes
     • Nonstationary Poisson process
     • function
   • Data Structure
     • Schedules
     • collect same-type items together
   • Modifying the Model
     • Tech Call Type
     • Back office
     • Statistic data