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  2. Average directional movement index - Wikipedia

    en.wikipedia.org/wiki/Average_directional...

    The average directional movement index (ADX) was developed in 1978 by J. Welles Wilder as an indicator of trend strength in a series of prices of a financial instrument. [1] ADX has become a widely used indicator for technical analysts, and is provided as a standard in collections of indicators offered by various trading platforms.

  3. J. Welles Wilder Jr. - Wikipedia

    en.wikipedia.org/wiki/J._Welles_Wilder_Jr.

    Average true range, Relative strength index, Average directional movement index, Parabolic SAR John Welles Wilder Jr. (June 11, 1935 – April 18, 2021) was an American mechanical engineer, turned real estate developer.

  4. Yaw (rotation) - Wikipedia

    en.wikipedia.org/wiki/Yaw_(rotation)

    A yaw rotation is a movement around the yaw axis of a rigid body that changes the direction it is pointing, to the left or right of its direction of motion. The yaw rate or yaw velocity of a car, aircraft, projectile or other rigid body is the angular velocity of this rotation, or rate of change of the heading angle when the aircraft is horizontal.

  5. Aircraft flight dynamics - Wikipedia

    en.wikipedia.org/wiki/Aircraft_flight_dynamics

    For example, a pitching moment comes from a force applied at a distance forward or aft of the cg, causing the aircraft to pitch up or down. A fixed-wing aircraft increases or decreases the lift generated by the wings when it pitches nose up or down by increasing or decreasing the angle of attack (AOA).

  6. Mean directional accuracy - Wikipedia

    en.wikipedia.org/wiki/Mean_Directional_Accuracy

    [1] [2] MDA is used in economics applications where the economist is often interested only in directional movement of variable of interest. As an example in macroeconomics , a monetary authority who wants to know the direction of the inflation, to raise or decrease interest rates if inflation is predicted to rise or drop respectively. [ 3 ]

  7. Heading indicator - Wikipedia

    en.wikipedia.org/wiki/Heading_indicator

    Failure to do this is a common source of navigation errors among new pilots. Another sort of apparent drift exists in the form of transport wander, caused by the aircraft movement and the convergence of the meridian lines towards the poles. It equals the course change along a great circle (orthodrome) flight path. [9]

  8. Trix (technical analysis) - Wikipedia

    en.wikipedia.org/wiki/Trix_(technical_analysis)

    Note that the distribution's mode will lie with p N-2 's weight, i.e. in the graph above p 8 carries the highest weighting. An N of 1 is invalid. The easiest way to calculate the triple EMA based on successive values is just to apply the EMA three times, creating single-, then double-, then triple-smoothed series. The triple EMA can also be expressed directly in terms of the prices as below ...

  9. Yaw damper - Wikipedia

    en.wikipedia.org/wiki/Yaw_damper

    [2] [1] Equally, the system is commonly disengaged prior to landing, as it could inhibit the control authority to the pilot at the critical moment of touchdown. On several modern aircraft that are outfitted with a yaw damper, these systems become engaged automatically once the aircraft has surpassed a set altitude (e.g. 200 feet); older ...