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SIMULATION

HOMEWORK 1 CHAPTER 1

BASIC CONCEPTS OF SIMULATION

1. Name several entities, attributes, activities, events, and state variables for the

following systems:(a) A cafeteriaEntity: costumer

Attributes: male client or female client, members(preference)Activities: drink coffee, select coffeeEvents: Arrival and departure of clientsState variables: number of server idle, number of server busy, clients served

(b) A grocery storeEntity: shoppers

Attributes: length of grocery listActivities: checking in, checking outEvents: arrival and departure at checkingState variables: number of orders placed

(c) A LaundromatEntity: costumers

Attributes: clients with formal wear (dresses, ackets) and clients with informal clothesActivities: laundry, drying clothesEvents: arrival clients, arrival and departure clothesState variables: number of clothes per laundry, time to laundry, number of clients inwaiting line

(d) A fast!food restaurantEntity: costumers

Attributes: children, adults, memberActivities: make order, pay orderEvents: arrival and departure of clientsState variables: number of clients served, time to prepare fast food, time to server

(e) A hospital emergency roomEntity: patients

Attributes: "atient#s emergency, medicine general#s patients (level re$uired)Activities: Service re$uired: check patients, surgeryEvents% arrival and departure patients of medicine general and emergencyState variables: time to attention, number of clients waiting for

(f) A ta&icab: company with ' ta&isEntity: passenger

Attributes: destinationActivities: travelingEvents: pick up of passenger and drop off of passengerState variables: time to arrive on time, number of busy ta&icab


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(g) An automobile: assembly lineEntity: robots

Attributes: speedActivities: assembly automobileEvents: arrive and departure of automobile assemblyState variables: time to assembly, number of robots assembly

2. Consider the simulation process shown in Figure 1.3 in the class boo.(a) educe the steps by at least two by combining similar activities* +ive your rationale*

he step - and .* /odel conceptuali0ation and 1ata collection can be performed the sametime,educe step 2 and 3 in one, 4erification and 4alidation because a modeler can be performedsimultaneously*

(b) 5ncrease the steps by at least two by separating current steps or enlarging on e&itingsteps* +ive your rationale*

6e&t model conceptuali0ation can be performed data collection, when there isn#t thevalidation, the modeler go the model conceptuali0ation* 6e&t step '7, implementation shouldbe control the process

3. ! simulation of a ma"or traffic intersection is to be conducted, with the ob"ective ofimproving the current traffic flow. #rovide three iterations, in increasing order ofcomple$ity, of steps 1 and 2 in the simulation process of Figure 1.3.

a* "roblem 8ormulationhe cars are arriving at the intersection are controlled by a traffic light

Setting of 9bectives and 9verall "roect "lanow should the traffic light be se$uenced; 8or evaluating effectiveness: average delay

time of cars* esources: people for data collection, person for data analysis, person for

model building, person for running and the model, person for implementation*

b* "roblem 8ormulationhe cars are arriving at the intersection are controlled by a traffic light but there arestops not allowed

Setting of 9bectives and 9verall "roect "lanow should the traffic light be se$uenced; /ake a stops allowed, for evaluating

effectiveness: average delay time of cars* esources: people for data collection,

person for data analysis, person for model building, person for running and the model,

person for implementation*


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c* "roblem 8ormulation

he cars are arriving at the intersection aren#t controlled by a traffic light but there arestops not allowed

Setting of 9bectives and 9verall "roect "lanow should the traffic light be se$uenced; /ake a stops allowed, for evaluating

effectiveness: average delay time of cars* esources: people for data collection,

person for data analysis, person for model building, person for running and the model,

person for implementation*

kegin cooking

Arrival of dinner guestsActivities

?ooking water?ooking pasta! add condimentsServing the guests

State variablesStatus pasta+uests servedappy +uests or unhappy guests


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@* =hat are the events and activities associated with the use of your notebook;

Event8re$uency for use the notebook per day*

Activities"rocess program1ownload programs

2* 5n the current =S? "roceedings available at www*informs!cs*orgwscpapers*html read anarticle on the application of simulation related to your mayor area of study or interest, andprepare a report on how the author accomplishes the steps given in 8igure '*-*

he link is broke, 5 can#t read the article

7. +o to the =inter Simulation ?onference website at www*wintersim*organd address thefollowing:

a* =hat advanced tutorials were offered at the previous =S? or are planned at thene&t =S?;

he =inter Simulation ?onference (=S?) is the premier international forum fordisseminating recent advances in the field of system simulation* 5n addition to a technicalprogram of unsurpassed scope and $uality, =S? provides the central meeting place forsimulation practitioners, researchers, and vendors working in all disciplines in industry,service, government, military and academic sectors*

b* =here and when will the ne&t =S? be held;

=S? 7'. will be held in Savannah, +A at the =estin Savannah arbor +olf esort BSpa hotel 1ecember 3!',7'.

C1. 1,2,3,4,5,7,11
http://www.informs-cs.org/wscpapers.htmlhttp://www.wintersim.org/http://www.informs-cs.org/wscpapers.htmlhttp://www.wintersim.org/

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