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  2. Trachtenberg system - Wikipedia

    en.wikipedia.org/wiki/Trachtenberg_system

    A method of adding columns of numbers and accurately checking the result without repeating the first operation. An intermediate sum, in the form of two rows of digits, is produced. The answer is obtained by taking the sum of the intermediate results with an L-shaped algorithm.

  3. Cephalometric analysis - Wikipedia

    en.wikipedia.org/wiki/Cephalometric_analysis

    Cephalometric analysis depends on cephalometric radiography to study relationships between bony and soft tissue landmarks and can be used to diagnose facial growth abnormalities prior to treatment, in the middle of treatment to evaluate progress, or at the conclusion of treatment to ascertain that the goals of treatment have been met. [5]

  4. Formulas for generating Pythagorean triples - Wikipedia

    en.wikipedia.org/wiki/Formulas_for_generating...

    When s and t are coprime, the triple will be primitive. A simple proof of Dickson's method has been presented by Josef Rukavicka, J. (2013). [7] Example: Choose r = 6. Then r 2 /2 = 18. The three factor-pairs of 18 are (1, 18), (2, 9), and (3, 6). All three factor pairs will produce triples using the above equations.

  5. Steiner system - Wikipedia

    en.wikipedia.org/wiki/Steiner_system

    The Fano plane is a Steiner triple system S(2,3,7). The blocks are the 7 lines, each containing 3 points. Every pair of points belongs to a unique line. In combinatorial mathematics, a Steiner system (named after Jakob Steiner) is a type of block design, specifically a t-design with λ = 1 and t = 2 or (recently) t ≥ 2.

  6. Beck's cognitive triad - Wikipedia

    en.wikipedia.org/wiki/Beck's_cognitive_triad

    The triad forms part of his cognitive theory of depression [4] and the concept is used as part of CBT, particularly in Beck's "Treatment of Negative Automatic Thoughts" (TNAT) approach. The triad involves "automatic, spontaneous and seemingly uncontrollable negative thoughts" about the self , the world or environment , and the future.

  7. Twenty-One Card Trick - Wikipedia

    en.wikipedia.org/wiki/Twenty-One_Card_Trick

    After three steps, the middle card (*) is the one in all chosen piles. The Twenty-One Card Trick, also known as the 11th card trick or three column trick, is a simple self-working card trick that uses basic mathematics to reveal the user's selected card. The game uses a selection of 21 cards out of a standard deck. These are shuffled and the ...

  8. What Is the Triple Sheet Method? How to Use This Simple Bed ...

    www.aol.com/lifestyle/triple-sheet-method-simple...

    The triple sheet method is an approach to bed making that employs three sheets instead of the traditional two. It also includes a duvet insert or a lightweight comforter, but eliminates the need ...

  9. Cognitive behavioral training - Wikipedia

    en.wikipedia.org/wiki/Cognitive_behavioral_training

    In CBT, as with most therapy, the patient plays a large role in determining the direction of the therapy, including the intensity and duration. [5] A CBTraining course, or program, is often broken up into a series of progressive, strategically ordered sessions designed to guide the participant through the process of training the brain away from ...