Difference: EditingHoldModules (6 vs. 7)

Revision 72010-02-04 - KatTrevor

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META TOPICPARENT name="ArenaGuide"

Editing Hold Modules

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 This hold stores entities in a queue until a unique signal is recieved during the simulation. Each time the signal is received an entity leaves the Hold module queue.

Consider the example of simulating cars queing at a parking building exit while waiting for their prepaid parking tickets to be approved. The cars ( entities) must wait for the signal 10 to be sent in the simulation. When this signal is sent, one car will proceed through the exit.

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Hold_for_signal.PNG
 

Scan for Condition

This hold stores entities in a queue until a condition is satisfied. However, the Hold module ONLY checks this condition WHEN A CALENDAR EVENT OCCURS. If the condition is true then the first entity in the queue may leave the Hold module. This generates a new event and the condition is checked again. Each time the condition is true an entity leaves the Hold module queue.

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  This hold stores entities in a queue infinitely while the simulation is running.
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NB: An infinite hold is usually combined with a Search module and a Remove module (See Arena help for more details).
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NB: An infinite hold is usually combined with a Search module and a Remove module (See Arena help for more details).
 
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-- MichaelOSullivan - 25 Aug 2009
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Consider the example of simulating an emergency waiting room. Incoming patients (entities) are placed into a queue based on their Patient Type. Patient Type is an attribute assigned to each entity earlier in the model. Entities will wait in the Emergency Room module in queue until they are removed from the queue by an nurse (entity) from a Remove module.
 
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  • Hold_for_signal.PNG:
    Hold_for_signal.PNG
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hold_infinite.PNG

-- MichaelOSullivan - 25 Aug 2009

 
META FILEATTACHMENT attachment="Hold_Scan_for_Condition.PNG" attr="h" comment="" date="1265238748" name="Hold_Scan_for_Condition.PNG" path="U:\Summer Work\Printscreens\Hold Scan for Condition.PNG" size="10013" stream="U:\Summer Work\Printscreens\Hold Scan for Condition.PNG" tmpFilename="" user="KatTrevor" version="1"
META FILEATTACHMENT attachment="Hold_for_signal.PNG" attr="h" comment="" date="1265248904" name="Hold_for_signal.PNG" path="U:\Summer Work\Printscreens\Hold for signal.PNG" size="9848" stream="U:\Summer Work\Printscreens\Hold for signal.PNG" tmpFilename="" user="KatTrevor" version="1"
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META FILEATTACHMENT attachment="hold_infinite.PNG" attr="h" comment="" date="1265249145" name="hold_infinite.PNG" path="U:\Summer Work\Printscreens\hold infinite.PNG" size="9248" stream="U:\Summer Work\Printscreens\hold infinite.PNG" tmpFilename="" user="KatTrevor" version="1"
 
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