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2. List of dimensionless quantities - Wikipedia

   en.wikipedia.org/wiki/List_of_dimensionless...

   Chemical engineering, material science, mechanics (A scale to show the energy needed for detaching two solid particles) [13] [14] Cost of transport: COT = energy efficiency, economics (ratio of energy input to kinetic motion) Damping ratio

3. Nondimensionalization - Wikipedia

   en.wikipedia.org/wiki/Nondimensionalization

   The general nth order linear differential equation with constant coefficients has the form: + + … + + = = () = (). The function f ( t ) is known as the forcing function . If the differential equation only contains real (not complex) coefficients, then the properties of such a system behaves as a mixture of first and second order systems only.

4. Scale analysis (statistics) - Wikipedia

   en.wikipedia.org/wiki/Scale_analysis_(statistics)

   The item-total correlation approach is a way of identifying a group of questions whose responses can be combined into a single measure or scale. This is a simple approach that works by ensuring that, when considered across a whole population, responses to the questions in the group tend to vary together and, in particular, that responses to no individual question are poorly related to an ...

5. Dimensionless quantity - Wikipedia

   en.wikipedia.org/wiki/Dimensionless_quantity

   Dimensionless quantities, or quantities of dimension one, [1] are quantities implicitly defined in a manner that prevents their aggregation into units of measurement. [2] [3] Typically expressed as ratios that align with another system, these quantities do not necessitate explicitly defined units.

6. Dimensionless numbers in fluid mechanics - Wikipedia

   en.wikipedia.org/wiki/Dimensionless_numbers_in...

   Dimensionless numbers (or characteristic numbers) have an important role in analyzing the behavior of fluids and their flow as well as in other transport phenomena. [1] They include the Reynolds and the Mach numbers, which describe as ratios the relative magnitude of fluid and physical system characteristics, such as density, viscosity, speed of sound, and flow speed.

7. Non-dimensionalization and scaling of the Navier–Stokes ...

   en.wikipedia.org/wiki/Non-dimensionalization_and...

   In fluid mechanics, non-dimensionalization of the Navier–Stokes equations is the conversion of the Navier–Stokes equation to a nondimensional form. This technique can ease the analysis of the problem at hand, and reduce the number of free parameters. Small or large sizes of certain dimensionless parameters indicate the importance of certain ...

8. Analysis of competing hypotheses - Wikipedia

   en.wikipedia.org/wiki/Analysis_of_competing...

   Analysis of Competing Hypotheses (ACH) is an open-source ACH implementation. [ 22 ] ACH Template [ 23 ] is an Excel sheet that implements the scoring and weighting methodology of ACH, more specifically the weighted inconsistency counting algorithm.

9. Scale (analytical tool) - Wikipedia

   en.wikipedia.org/wiki/Scale_(analytical_tool)

   The scale of analysis encompasses both the analytical choice of how to observe a given system or object of study, and the role of the observer in determining the identity of the system. [ 2 ] [ 3 ] This analytical tool is central to multi-scale analysis (see for example, MuSIASEM , land-use analysis).