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Simulation and Modelling



                      Notes         7.5 Keywords


                                    Computer Simulation: The computer simulation is a method that demonstrates dynamically the
                                    structure and the behaviors of a system.

                                    Discrete Event: Discrete event is a technique used to model the real-world scenarios.
                                    7.6 Self Assessment


                                    Fill in the blanks:
                                    1.   The arrivals occur one  at a time in a random  order and once the customer joins  the
                                         ………………… he will eventually receive the service.
                                    2.   The arrival pattern of consumers to the service system is categorized into two groups:
                                         ………………… and dynamic.

                                    3.   The ………………… queuing system can be seen in places such as banks and post offices,
                                         where one single queue will diverge into a few counters.
                                    4.   The purpose of using simulation technique to analyze the collected data is to avoid costly
                                         design errors, and to analyze the behaviors of the ………………… systems.
                                    5.   Each event has a ………………… corresponding to the wall-clock time when it occurs.
                                    6.   A good perceptive of the relationship between ………………… and delay is essential for
                                         designing effective  congestion control algorithms.
                                    7.   Queuing Theory occurs from the use of powerful ………………… analysis.
                                    8.   Queuing Theory with its fine-tuned analysis offers a base for a to some extent simplified
                                         and simpler to use set of tools called ………………… and Simulation.
                                    9.   The behaviors of a system with computer in order to ………………… and predict the effect
                                         of the behaviors of some system and provide information for decision.
                                    10.  The computer simulation is a quite effective way for solve the ………………… and analyzing
                                         the performances of the queuing system.

                                    11.  In the ………………… super-market, there is a cash desk, and customers reaches the desk
                                         in random.
                                    12.  The creation of random number it is desired to describe ………………… factors in  the
                                         objective process in nearly all of the simulation process.
                                    13.  The entity  is limited  or limitless,  and the  arrival of the entity  is in  individual or  in
                                         …………………
                                    14.  The queuing problem is a problem about a balance between average ………………… and
                                         idle time of server.

                                    15.  The queuing character, the ………………… the  service organization become more and
                                         more complex so that the parsing method nearly can't be obtain.

                                    7.7 Review Questions

                                    1.   Find out the difference between single-channel and multiple-channels queuing systems.

                                    2.   “In the queuing model two types of  events are used, namely  arrival and  departure.”
                                         Elaborate.




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