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  2. Runge–Kutta methods - Wikipedia

    en.wikipedia.org/wiki/Runge–Kutta_methods

    All collocation methods are implicit Runge–Kutta methods, but not all implicit Runge–Kutta methods are collocation methods. [28] The Gauss–Legendre methods form a family of collocation methods based on Gauss quadrature. A Gauss–Legendre method with s stages has order 2s (thus, methods with arbitrarily high order can be constructed). [29]

  3. Figure-four (grappling hold) - Wikipedia

    en.wikipedia.org/wiki/Figure-four_(grappling_hold)

    A figure-four hold done with the legs around the neck and (usually) arm of an opponent is called figure-four (leg-)choke, better known as a triangle choke, and is a common submission in modern mixed martial arts, Submission wrestling and Brazilian jiu jitsu, and Catch wrestling. In addition to Lancashire, or catch-as-catch-can wrestling, the ...

  4. Triangle choke - Wikipedia

    en.wikipedia.org/wiki/Triangle_choke

    A triangle choke, or sankaku-jime (三角絞) in judo, is a type of figure-four chokehold that encircles the opponent's neck and one arm with the legs in a configuration similar to the shape of a triangle.

  5. Euler method - Wikipedia

    en.wikipedia.org/wiki/Euler_method

    (Figure 4) Solution of ′ = computed with the Euler method with step size = (blue squares) and = (red circles). The black curve shows the exact solution. The black curve shows the exact solution. The Euler method can also be numerically unstable , especially for stiff equations , meaning that the numerical solution grows very large for ...

  6. Instrumental variables estimation - Wikipedia

    en.wikipedia.org/wiki/Instrumental_variables...

    In statistics, econometrics, epidemiology and related disciplines, the method of instrumental variables (IV) is used to estimate causal relationships when controlled experiments are not feasible or when a treatment is not successfully delivered to every unit in a randomized experiment. [1]

  7. Rear naked choke - Wikipedia

    en.wikipedia.org/wiki/Rear_naked_choke

    This choke, in either the figure-four or clasped-hand variation, is an extremely dangerous technique if used thoughtlessly or improperly. When applied as a blood choke in particular, it immediately reduces the supply of oxygen to the brain, leading to unconsciousness and ultimately (if not released) to brain damage or death.

  8. Rainflow-counting algorithm - Wikipedia

    en.wikipedia.org/wiki/Rainflow-counting_algorithm

    Figure 3: Rainflow analysis for tensile peaks. The stress history in Figure 2 is reduced to tensile peaks in Figure 3 and compressive valleys in Figure 4. From the tensile peaks in Figure 3: The first half-cycle starts at tensile peak 1 and terminates opposite a greater tensile stress, peak 3 (case c); its magnitude is 16 MPa (2 - (-14) = 16).

  9. Functional flow block diagram - Wikipedia

    en.wikipedia.org/wiki/Functional_flow_block_diagram

    Figure 2: Development of functional flow block diagrams [8] FFBDs can be developed in a series of levels. FFBDs show the same tasks identified through functional decomposition and display them in their logical, sequential relationship. For example, the entire flight mission of a spacecraft can be defined in a top level FFBD, as shown in Figure ...