Similarity Criteria

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Similarity Criteria

 

the necessary conditions for physical similarity of two phenomena—for example, phenomena experienced by an actual object and by a model of it. Similarity criteria consist in the equality of certain dimensionless quantities, called the characteristic numbers, for the phenomena in question. The numbers themselves are sometimes called the similarity criteria. Among them are the Mach, Reynolds, Prandtl, Strouhal, Euler, and Froude numbers.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The following geometric similarity criteria for the studied areas were given: [X.sub.1] = b/a and [X.sub.2] = [alpha].
Similarity criteria: This criterion measures the similarity between the reference and segmented image.
Based on a generalized likelihood ratio, the similarity criteria is defined as follows [27]:
Therefore, the main similarity criteria should satisfy the specific conditions of the experiment.
In this method, at first, friend similarity criteria were calculated from the adjacency matrix of the network graph and new features were extracted from the PCA method.
The similarity criteria is chosen from various properties such as mean, variance, texture, etc.
According to dimension's harmonious condition as well as [pi] theorem, 14 similarity criteria of independent dimensionless parameters can be listed in 3 categories:
To simulate marble according to the similarity criteria, we adopt resin-based equivalent materials that are developed by Fan et al.
The first two similarity criteria are verified by comparing the K-d trees of the shapes.
The similarity theory required that the following similarity criteria must be satisfied in mechanical modeling (Fumagalli [15,16]):
Lim, "A DEA-based method of stepwise benchmark target selection with preference, direction and similarity criteria," International Journal of Innovative Computing, Information and Control, vol.