In cryptography the standard model is the model of computation in which the adversary is only limited by the amount of time and computational power available. Other names used are bare model and plain model.

<algorithm> (Or "message digest function") A {one-way function} which takes a variable-length message and produces a fixed-length hash. Given the hash it is computationally infeasible to find a message with that hash; in fact one can't determine any usable information about a message with that hash, not even a single bit. For some one-way hash functions it's also computationally impossible to determine two messages which produce the same hash. A one-way hash function can be private or public, just like an encryption function. MD5, SHA and Snefru are examples of public one-way hash functions. A public one-way hash function can be used to speed up a public-key digital signature system. Rather than sign a long message, which can take a long time, compute the one-way hash of the message, and sign the hash. {sci.crypt FAQ (ftp://src.doc.ic.ac.uk/usenet/usenet-by-group/sci.crypt/)}. (2001-05-10)

A model act, also called a model law or a piece of model legislation, is a suggested example for a law, drafted centrally to be disseminated and suggested for enactment in multiple independent legislatures. The motivation classically has been the hope of fostering more legal uniformity among jurisdictions, and better practice in legislative wording, than would otherwise occur; another motivation sometimes has been lobbying disguised under such ideals.

A model is a person with a role either to promote, display or advertise commercial products (notably fashion clothing in fashion shows) or to serve as a visual aid for people who are creating works of art or to pose for photography. Though models are predominantly female, there are also male models, especially to model clothing.

Ship models or model ships are scale models of ships. They can range in size from 1/6000 scale wargaming miniatures to large vessels capable of holding people.

In historical linguistics, the tree model (also Stammbaum, genetic, or cladistic model) is a model of the evolution of languages analogous to the concept of a family tree, particularly a phylogenetic tree in the biological evolution of species. As with species, each language is assumed to have evolved from a single parent or "mother" language, with languages that share a common ancestor belonging to the same language family.

An art model poses, often nude, for visual artists as part of the creative process, providing a reference for the human body in a work of art. As an occupation, modeling requires the often strenuous 'physical work' of holding poses for the required length of time, the 'aesthetic work' of performing a variety of interesting poses, and the 'emotional work' of maintaining a socially ambiguous role.

The model of a car is the name used by a manufacturer to market a range, and/or series of similar cars, benefitting from shared technology, components, underpinnings, and/or style and appearance.

A statistical model is a mathematical model that embodies a set of statistical assumptions concerning the generation of sample data (and similar data from a larger population). A statistical model represents, often in considerably idealized form, the data-generating process.