Robust means healthy, strong, durable, and often adaptable, innovative, flexible.

Computer Engineering

In computing terms, robustness is the resilience of the system under stress or when confronted with invalid input. It is the ability of the software system to maintain function even with the changes in internal structure or external environment. For example, an operating system is considered robust if it operates correctly when it is starved of memory or storage space, or when confronted with an application that has bugs or is behaving in an illegal fashion such as trying to access memory or storage belonging to other tasks in a multitasking system. A Lego RCX Computer is an example of an embedded computer used to control mechanical devices. ... To meet Wikipedias quality standards, this article or section may require cleanup. ...

Control Theory

Robust control system

Main article: Robust control

Central to the development of feedback control theory has been the notion of uncertainty. This arises in two forms: (a) discrepancy between the physical plant and the mathematical model used for controller design, and (b) unmeasured noises and disturbances that act on the physical plant. Feedback is used to desensitise the control system to the effect of both these types of uncertainty. Care must be exercised, however, as feedback in the presence of an uncertain plant can easily lead to instability if due consideration is not given to the way in which this uncertainty modifies the system behaviour. This is the essence of robust control theory. In robust control, the word robust means that the controller or regulator should work well (e. ... A mathematical model is an abstract model that uses mathematical language to describe the behaviour of a system. ... A controller is a person or device that exercises or attempts to exercise control or influence. ... In science, and especially in physics and telecommunication, noise is fluctuations in and the addition of external factors to the stream of target information (signal) being received at a detector. ... Feedback is (generally) information about actions. ... Instability in systems is generally characterized by some of the outputs or internal states growing without bounds. ...

See also control theory. In engineering and mathematics, control theory deals with the behavior of dynamical systems. ...

Statistics

A robust statistical test is one that performs well even if its assumptions are violated by the true model from which the data were generated. Look up assumption in Wiktionary, the free dictionary. ...

Genetics

Mutational robustness describes the extent to which an organism's phenotype remains constant in spite of mutation. Mutational robustness describes the extent to which an organisms phenotype remains constant in spite of mutation. ... In biology, mutations are changes to the genetic material (either DNA or RNA). ...

Engineering Design

Robust Design generally means that the design is capable of functioning correctly, (or at the very minimum, not failing catastrophically) under a great many conditions. Also, it means that tolerances can be looser because "it can only be built one way."

Additionally, a robust design usually has a high signal-to-noise ratio.

Economics

In Economics, robustness is a term used to define the ability of a financial trading system to remain effective under different markets and different market conditions. Face-to-face trading interactions among on the New York Stock Exchange trading floor Economics, may just involve more otriches than you think social science, studies the production, distribution, and consumption of commodities. ...