Introduction to Modeling and Simulation

1Introduction

1.1 Introduction

This text is concerned with modeling and simulation of systems, both natural and engineered. We treat both analytical and computational methods for a range of applications to electrical, mechanical, biological, financial, social, and other systems.

The notion of what constitutes a system is very broad and application dependent. Generally, by a system, one means a combination of interrelated components or parts that works in synergy to collectively perform a desired function. In business, for example, a system can mean a set of processes or procedures working together, such as a payroll system or inventory system. In physiology, the circulatory system is composed of the heart, blood, arteries, veins, and capillaries and delivers oxygen and nutrients to cells and removes waste products, such as carbon dioxide. In computer science, an operating system is the software that manages hardware and software resources and provides services to application programs. In biology, an ecosystem refers to a community of interacting species and their physical environment.

The distinction between component and system is application dependent. For example, in the semiconductor industry a microprocessor is a highly complex system, whereas in the automotive industry a microprocessor is a component in systems that control engine emissions, braking, cruise control, and other functions.

1.1.1 Systems Engineering

Systems engineering is an interdisciplinary field of engineering ...