exchange difference - ορισμός. Τι είναι το exchange difference
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Τι (ποιος) είναι exchange difference - ορισμός

NUMERICAL METHODS FOR SOLVING DIFFERENTIAL EQUATIONS BY APPROXIMATING THEM WITH DIFFERENCE EQUATIONS
Finite Difference Method; Finite difference scheme; Finite difference schemes; Finite difference methods; Finite-difference approximation; Finite-difference method; Finite-difference methods
  • The Crank–Nicolson stencil.
  • stencil]] for the most common explicit method for the heat equation.
  • The finite difference method relies on discretizing a function on a grid.
  • The implicit method stencil.

Just-noticeable difference         
AMOUNT THAT A STIMULUS MUST BE CHANGED TO BE DETECTED
Jnd; Differential threshold; Difference threshold; Just-noticable difference; Difference limen; Just noticeable difference; Just noticeable differences
In the branch of experimental psychology focused on sense, sensation, and perception, which is called psychophysics, a just-noticeable difference or JND is the amount something must be changed in order for a difference to be noticeable, detectable at least half the time (absolute threshold). This limen is also known as the difference limen, difference threshold, or least perceptible difference.
Relative change and difference         
TECHNIQUES USED TO COMPARE TWO QUANTITIES
Percent error; % difference; Percent Difference; %difference; %ch; Relative difference; Percentage change; Percent change; Relative percent difference; Percentage increase; Relative change; Percent difference; Δ%; %CH; Percentage difference; Percent discrepancy; Log point; Log change
In any quantitative science, the terms relative change and relative difference are used to compare two quantities while taking into account the "sizes" of the things being compared. The comparison is expressed as a ratio and is a unitless number.
Minimal important difference         
STATISTICALLY SIGNIFICANT MINIMUM SET OF CLINICAL OUTCOMES THAT DEMONSTRATES A CLINICAL BENEFIT OF AN INTERVENTION OR TREATMENT
Wikipedia talk:Articles for creation/Minimal Clinically Important Difference; Minimal Clinically Important Difference; Minimal clinically important difference
The minimal important difference (MID) or minimal clinically important difference (MCID) is the smallest change in a treatment outcome that an individual patient would identify as important and which would indicate a change in the patient's management.

Βικιπαίδεια

Finite difference method

In numerical analysis, finite-difference methods (FDM) are a class of numerical techniques for solving differential equations by approximating derivatives with finite differences. Both the spatial domain and time interval (if applicable) are discretized, or broken into a finite number of steps, and the value of the solution at these discrete points is approximated by solving algebraic equations containing finite differences and values from nearby points.

Finite difference methods convert ordinary differential equations (ODE) or partial differential equations (PDE), which may be nonlinear, into a system of linear equations that can be solved by matrix algebra techniques. Modern computers can perform these linear algebra computations efficiently which, along with their relative ease of implementation, has led to the widespread use of FDM in modern numerical analysis. Today, FDM are one of the most common approaches to the numerical solution of PDE, along with finite element methods.