INTRODUCTION LITERATURE REVIEW METHODOLOGY

vii TABLE OF CONTENTS Declaration i Approval ii Abstract iii Abstrak iv Dedication v Acknowledgements vi Table of Contents vii List of Figures xiii List of Tables xiv List of Abbreviations, Symbols, Specialized Nomenclature xvi

CHAPTER 1 INTRODUCTION

1.1 Introduction

1 1.2 Background of Problems 3

1.3 Statement of Problem

4 1.4 Objective 5

1.5 Scopes

5 1.6 Importance of Study 5

1.7 Organization of Report

5

CHAPTER 2 LITERATURE REVIEW

2.1 Queuing Theory 7 2.1.1 Evolution of Queuing Models 8 2.2 Queuing Models 10 2.2.1 Customer Arrivals 11 2.2.1.1 Inter-arrival and Service Time Distribution 12 2.2.2 Service System 13 viii 2.2.3 Types of Queuing Models 14 2.2.3.1 Single-Server, Single-Phase 14 2.2.3.2 Single-Server, Multi-Phase 14 2.2.3.3 Multi-Server, Single-Phase 15 2.2.3.4 Multi-Server, Multi-Phase 15 2.2.4 Performance of Measures 16 2.2.5 Queuing Behaviour and Queue Discipline 17 2.2.6 Assumptions Made for Queuing Models 17 2.2.6.1 Single-Server Queuing Model 17 2.2.6.2 Multi-Server Queuing Model 18 2.3 Queuing Notation 18 2.4 Performance of Measures in Queuing System 19 2.4.1 Conservation Equation 19 2.4.2 Server Utilization 20 2.5 Steady-State Behavior of Infinite Population Markovian Models 21 2.5.1 Single-Server Queue: MG1 21 2.5.2 Single-Server Queue: MM1 22 2.5.3 Multi-Server Queue: MMc ∞∞ 23 2.5.4 When the Number of Servers is Infinite MG ∞∞ 24 2.6 Introduction to Simulation 25 2.6.1 Advantages of Simulation 26 2.6.2 Disadvantages of Simulation 27 2.6.3 Computer Simulation 27 2.6.4 Simulation in Service Industries 28 2.7 Current Development of Queuing and Simulation 28 2.8 Summary of Literature Review 34

CHAPTER 3 METHODOLOGY

3.1 Introduction 35 3.2 Planning Phase 36 3.2.1 Problem Identification, Define Objectives and Scope of 36 ix Study 3.3 Data Collection 36 3.3.1 Design of Survey 36 3.3.1.1 Inter-arrival Time 39 3.3.1.2 Service Time 40 3.3.1.3 Customer Satisfaction 40 3.3.1.4 Number of Servers and Layout of Post Office 40 3.4 Analyzing Phase 41 3.4.1 Analysis of Customer Satisfaction 41 3.4.2 Apply Mathematical Model Concept for Queuing Model 41 3.4.3 Conduct Simulation Study 41 3.4.3.1 Problem Formulation and Setting the Objectives 42 3.4.3.2 Model Conceptualization 43 3.4.3.3 Model Translation 43 3.4.3.4 Verification 43 3.4.3.5 Validation 44 3.4.3.6 Experimentation 44 3.4.3.7 Documentation 44

CHAPTER 4 MODEL DEVELOPMENT