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  2. Track geometry - Wikipedia

    en.wikipedia.org/wiki/Track_geometry

    Therefore, the maximum warp parameter is used to prevent the critical harmonic rock-off condition that may result in the trains rocking back and forth and derailing following wheel climb. [ 9 ] In North America, the specific distance used for measurement to ensure that the difference in crosslevel of the track is within the permissible warp ...

  3. Warping (sailing) - Wikipedia

    en.wikipedia.org/wiki/Warping_(sailing)

    HMS Thetis aground Warping or kedging is a method of moving a sailing vessel, typically against the wind or current, after running aground, or out from a dead calm, by hauling on a line attached to a kedge anchor, a sea anchor, or a fixed object, such as a bollard or tree.

  4. Bow and warp of semiconductor wafers and substrates

    en.wikipedia.org/wiki/Bow_and_warp_of...

    Warp is the difference between the maximum and the minimum distances of the median surface of a free, un-clamped wafer from the reference plane defined above. This definition follows ASTM F657, [ 2 ] and ASTM F1390.

  5. AVL tree - Wikipedia

    en.wikipedia.org/wiki/AVL_tree

    Indeed, every AVL tree can be colored red–black, [14] but there are RB trees which are not AVL balanced. For maintaining the AVL (or RB) tree's invariants, rotations play an important role. In the worst case, even without rotations, AVL or RB insertions or deletions require O(log n) inspections and/or updates to AVL balance factors (or RB ...

  6. Dynamic time warping - Wikipedia

    en.wikipedia.org/wiki/Dynamic_time_warping

    Dynamic time warping between two piecewise linear functions. The dotted line illustrates the time-warp relation. Notice that several points in the lower function are mapped to one point in the upper function, and vice versa. Two repetitions of a walking sequence recorded using a motion-capture system.

  7. English wheel - Wikipedia

    en.wikipedia.org/wiki/English_wheel

    An English wheel showing four interchangeable lower wheels (anvils), the larger fixed upper wheel, the pressure adjustment screw and a quick release mechanism The English wheel , in Britain also known as a wheeling machine , is a metalworking tool that enables a craftsperson to form compound (double curvature) curves from flat sheets of metal ...

  8. Grinding wheel - Wikipedia

    en.wikipedia.org/wiki/Grinding_wheel

    The wheel type (e.g. cup or plain wheel below) fit freely on their supporting arbors, the necessary clamping force to transfer the rotary motion being applied to the wheels side by identically sized flanges (metal discs). The paper blotter shown in the images is intended to distribute this clamping force evenly across the wheels surface.

  9. Freewheel - Wikipedia

    en.wikipedia.org/wiki/Freewheel

    Freewheel mechanism Ratcheting freewheel mechanism (van Anden, 1869). In mechanical or automotive engineering, a freewheel or overrunning clutch is a device in a transmission that disengages the driveshaft from the driven shaft when the driven shaft rotates faster than the driveshaft.