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Simulation Practice Problems

1. There is only one telephone in a public booth of a metro station. Following table indicates the distribution of arrival time and duration of calls: Time Between arrivals (minutes) 4 5 6 Probability 0.1 .6 0.3 Call Duration (minutes) 3 4 5 6 Probability 0.14 0.6 0.12 0.14 Simulate for 100/500/1000 times. Conduct 3 such trials. It is proposed to add another telephone to the booth. Justify the proposal based on the waiting time of caller.Generate graphs to support your answer. 2. A baker needs to find out the cookies he need to bake each day. The probability distribution for the cookies customers is as follows: Number of customers/day 7 9 11 14 Probability 0.35 0.30 0.15 0.20 C

Simulation and Modeling FAQ continued

1. Discuss the usage of DEVS in detail? 2. Describe the steps involved in a simulation study?Illustrate with a relevant example 3. Explain the four steps involved in the model building process? 4. Simulation can be used to solve traffic problems at major intersections?Explain the steps involved to carry this simulation study? 5. How can simulation be used to study the queuing systems? 6. Describe pictorially the arrival and departure in a queuing system? 7. Give an example of Single channel queue. How can you use simulation to study such a system? 8. What according to you are the performance measures required to analyze a queuing system? 9. How will you calculate following performace measures for a sing server queuing system a. Average waiting system. b. Probability a customer has to wait. c. probability of idle server d. Average service time e. Expected service time f. Average time between arrivals. g. Average time customer

Simulation & Modeling FAQs

1. Discuss the advantages and disadvantages of Simulation? 2. Discuss with example case when not to use Simulation? 3. What according to you are the real world problems where you find simulation is the most appropriate tool? 4. Discuss the role play of simulation in following fields? 1. Business Processes? 2. Manufacturing Application 3. Military Applications 4. Logistics and Supply chains 5. Discuss system and its components in detail? 6. Differentiate the following a. Open System and Closed System b. Exogenous and Endogenous System c. Discrete and continuous system d. Static Vs Dynamic system 7. what are the different types of models/ 8. Name the entities,attributes,activities,events and state variables for the following systems a. College library b. Mobile Call center c. Hospital Ward d. Departmental Store e. Airport ticketing

E-Commerce Notes # 1-5

FTP - File transfer Protocol ISP - Internet Service Provider DNS - Domain Name Server Revolution Change Digital Enabled Transaction -All transactions that are mediated by digital technologies Commercial Exchange of value between or across organizational or individual boundaries in return of a product or service for a commercial transactions What is the difference between E-Commerce & E-Business E-Business Digital enablement of transaction & process within a firm involving information system under control of firm. e.g. : online inventory control, LMS - Leave Management System, EMS - Employee Management System. E-Business turns into E-Business when there is a commercial value added to it. <<DIAGRAM>> Information Asymmetry Geographical Boundaries Information about price/cost/fees are hidden from consumers creating a profitable hidden information asymmetry. This creates a disparity in relevant market information that confuses the customers. The