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farnaz

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  1. Hello, I have question about batching for my model. I would like to batch my entities in a specific node in my model and release them at a specific time. In other word, entities come to first server and they need to stay there until a specific time (for example 5 am and 5 pm) and then at that specific time they can be transferred to the second server. Could you please help me how to model it? I wanted to use Add.on process and using Wait and Fire steps but I do not know how to define an event. Also, I am not sure if my idea is correct? I really appreciate if you could help me
  2. farnaz

    Routing based on time schedule

    I tried your solution and it works. Thank you so much
  3. Hello, In my SIMIO model there is a decision point and in this point some entities will be accepted and some of them will be rejected. For accepted entities, there are 3 different routes through the 3 different servers. So, I would like to create a rule in this decision point as follows: From 6am to 10am, entities would be accepted with probability (1-p1) and transferred to server A. So, entities would be rejected with probability p1. From 10am to 6pm, entities would be accepted with probability (1-p2) and transferred to server B. So, entities would be rejected with probability p2. From 6pm to 10pm, entities would be accepted with probability (1-p3) and transferred to server C. So, entities would be rejected with probability p3. So, I do not know how to determine the time schedule for link weight for each rout. I really appreciate if anyone can help me,
  4. Hello, In my SIMIO model there is a decision point and in this point some entities will be accepted and some of them will be rejected. For accepted entities, there are 3 different routes through the 3 different servers. So, I would like to create a rule in this decision point as follows: From 6am to 10am, entities would be accepted with probability (1-p1) and transferred to server A. So, entities would be rejected with probability p1. From 10am to 6pm, entities would be accepted with probability (1-p2) and transferred to server B. So, entities would be rejected with probability p2. From 6pm to 10pm, entities would be accepted with probability (1-p3) and transferred to server C. So, entities would be rejected with probability p3. So, I do not know how to determine the time schedule for link weight for each rout. I really appreciate if anyone can help me,
  5. farnaz

    Optquest

    I really appreciate your response. I considered the work schedule field (value) in capacity as the control parameter and defined different schedule table. Also, in experiment mode the work schedule field reveals in the control parameter while in the Optquest I am not able to edit properties and parameters because no adjustment will show up. In fact, my problem is exactly that how to determine the range (different schedule table) in the Optquest?
  6. farnaz

    Optquest

    Hello, I would like to use Optquest in SIMIO and find the best optimum number of nurses are working in a server in order to minimize the patient waiting time. But, the capacity of this server (nurses) use the work schedule (working 12 hours per day). I also defined different work schedule with different capacity for this server but I cannot use them as the different scenarios in the Optquest. How should I consider the capacity work schedule of the server as an control parameter in the Optquest? Thank you
  7. farnaz

    off-shift

    Hi, In my model, one of the servers has working shift from 10am to 10pm. I would like the server works 1 more hour (from 10pm-11pm) if there is an entity in the server inputbuffer queue. Could you please give me a hint how to check the server inputbuffer queue for a specific time (10pm-11pm every day)? Also, I would like to have the detail results of my model for each entity based on the time for each server or node in excel because I run the model for a long time. Could you please let me know is there any option in SIMIO to provide the detail information in excel? I really appreciate if anyone can help me.
  8. Hi, In my model, one of the servers has working shift from 10am to 10pm. I would like the server works 1 more hour (from 10pm-11pm) if there is an entity in the server inputbuffer queue. Could you please give me a hint how to check the server inputbuffer queue for a specific time (10pm-11pm every day)? Also, I would like to have the detail results of my model for each entity based on the time for each server or node in excel because I run the model for a long time. Could you please let me know is there any option in SIMIO to provide the detail information in excel? I really appreciate if anyone can help me. Farnaz,
  9. farnaz

    Steady state simulation

    Hi, In my simulation model, I am trying to reach the steady state for the results. So, I run the model with 100 replications for 5 year but if I change the 5 years to 6 years, or consider a 1 year warm up time, or 2 years warm up time for the system the results will vary differently for each changes . The changes are small for example the total waiting time increase around 4 minutes when I consider 2 years warm up for the system. So, how can I make sure the simulation results are steady state?
  10. Hello, I need to count the number of visits from a specific server for each entities because there is a loop in my model and each entity can visit a specific server many times. So, How can I measure the number of visits for each entity from a specific server? I really appreciate if you could help me.
  11. farnaz

    Tag an entity

    Could you please explain more? what type of state do I need to add to the entity? Also, how can I count the number of rejection for each entity separately?
  12. farnaz

    Tag an entity

    Hello, I have a problem in my simulation model. In my simulation model there is a rejection probability for entities in just one of the servers. If an entity rejects, it goes to a virtual server and then after spending an specific time come back to the system again. This rejection loop can be repeated for each entity many times or never.So, I would like to count the number of rejection for each entity. How can I tag an entity? I really appreciate it If anyone can help me. Farnaz,
  13. farnaz

    Virtual server, Stop longer parallel task

    I tried your suggestion but in that way server selects the exponential (10) all the time because it is the minimum and the other one (exponential (20)) does not have any chance for being selected. So, anyway I tried different solution and right now it works. I really appreciate for your time and help.
  14. Hi, I have a problem in my simulation model. In my model, entities do not exit from the system after finishing the process and they will go to a virtual server and two random variables (exponential (10 hours), exponential (20 days)) should be run PARALLEL for each entity. Once running of a variable is done, the other variable should stop. Every entities with exponential 10 hours variable will come back again to the system, while other entity with exponential 10 days variable will exit the system permanently. Actually, the holding time in the virtual server should be determined based on the Min of two random variables. I tried to consider these two variable time as processing time in task sequence (same sequence number) for each entity in virtual server. The problem here is that I do not know which logic or method I should use such that if on variable stops first, the system automatically should be able to stop the other variable and select the path. I really appreciate it If anyone can help me. Farnaz,
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