Browse Definitions :
Definition

discrete event simulation (DES)

Contributor(s): Stan Gibilisco

Discrete event simulation (DES) is the process of codifying the behavior of a complex system as an ordered sequence of well-defined events. In this context, an event comprises a specific change in the system's state at a specific point in time.

Common applications of DES include stress testing, evaluating potential financial investments, and modeling procedures and processes in various industries, such as manufacturing and healthcare.  

As an example of a situation that lends itself to DES, consider the amount of electrical power consumed by a corporation's office building as a function of time. Discrete events affecting this function include power-up or power-down of any electrical device in the building. Instantaneous changes of state in a device already powered-up are also discrete events; for example, a speed change in a cooling fan or a brightness change in a desk lamp. 

An effective DES process must include, at a minimum, the following characteristics:

  • Predetermined starting and ending points, which can be discrete events or instants in time.
  • A method of keeping track of the time that has elapsed since the process began.
  • A list of discrete events that have occurred since the process began.
  • A list of discrete events pending or expected (if such events are known) until the process is expected to end.
  • A graphical, statistical, or tabular record of the function for which DES is currently engaged.

DES is commonly used to monitor and predict the behavior of investments; the stock market is a classic example. DES can also help administrators predict how a network will behave under extraordinary conditions, such as the Internet during a major disaster.

This was last updated in July 2012

Continue Reading About discrete event simulation (DES)

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • risk management

    Risk management is the process of identifying, assessing and controlling threats to an organization's capital and earnings.

  • compliance as a service (CaaS)

    Compliance as a Service (CaaS) is a cloud service service level agreement (SLA) that specified how a managed service provider (...

  • data protection impact assessment (DPIA)

    A data protection impact assessment (DPIA) is a process designed to help organizations determine how data processing systems, ...

SearchSecurity

  • quantum key distribution (QKD)

    Quantum key distribution (QKD) is a secure communication method for exchanging encryption keys only known between shared parties.

  • identity theft

    Identity theft, also known as identity fraud, is a crime in which an imposter obtains key pieces of personally identifiable ...

  • cybercrime

    Cybercrime is any criminal activity that involves a computer, networked device or a network.

SearchHealthIT

SearchDisasterRecovery

  • disaster recovery (DR)

    Disaster recovery (DR) is an area of security planning that aims to protect an organization from the effects of significant ...

  • disaster recovery plan (DRP)

    A disaster recovery plan (DRP) is a documented, structured approach that describes how an organization can quickly resume work ...

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

SearchStorage

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

  • secondary storage

    Secondary storage is storage for noncritical data that will not be frequently accessed.

  • logical unit number (LUN)

    A logical unit number (LUN) is a unique identifier for designating an individual or collection of physical or virtual storage ...

Close