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An intensity-duration-frequency curve (IDF curve) is a mathematical function that relates the intensity of an event (e.g. rainfall) with its duration and frequency of occurrence. [1] Frequency is the inverse of the probability of occurrence. These curves are commonly used in hydrology for flood forecasting and civil engineering for urban ...
Time of concentration is useful in predicting flow rates that would result from hypothetical storms, which are based on statistically derived return periods through IDF curves. [4] [5] For many (often economic) reasons, it is important for engineers and hydrologists to be able to accurately predict the response of a watershed to a given rain event.
SolveSpace is a free and open-source 2D/3D constraint-based parametric computer-aided design (CAD) software that supports basic 2D and 3D constructive solid geometry modeling. It is a constraint-based parametric modeler with simple mechanical simulation capabilities. Version 2.1 and onward runs on Windows, Linux and macOS.
Intensity-duration-frequency curve, for rainfall; Intel Developer Forum; Intermediate Data Format, a file format for electronic design automation; Intermediate distribution frame, for telecommunications wiring; AIDC F-CK-1 Ching-kuo, Indigenous Defense Fighter, Taiwanese aircraft; Inverse Document Frequency, a factor in the tf–idf principle
Lorenz curve – Graphical representation of the distribution of income or of wealth; Lotka's law – An application of Zipf's law describing the frequency of publication by authors in any given field; Menzerath's law – Linguistic law; Pareto distribution – Probability distribution
TableCurve 2D is a linear and non-linear Curve fitting software package for engineers and scientists that automates the curve fitting process and in a single processing step instantly fits and ranks 3,600+ built-in frequently encountered equations enabling users to easily find the ideal model to their 2D data within seconds.
VantageScore 3.0, with scores ranging from 300 to 850, is a user-friendly credit score model developed by the three major nationwide credit reporting agencies, Experian ®, TransUnion ®, and ...
Capability curve of an electrical generator describes the limits of the active and reactive power that the generator can provide. The curve represents a boundary of all operating points in the MW/MVAr plane; it is typically drawn with the real power on the horizontal axis, and, for the synchronous generator , resembles a letter D in shape, thus ...