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  2. Doubly fed electric machine - Wikipedia

    en.wikipedia.org/wiki/Doubly_fed_electric_machine

    Doubly fed induction generator (DFIG), a generating principle widely used in wind turbines. It is based on an induction generator with a multiphase wound rotor and a multiphase slip ring assembly with brushes for access to the rotor windings. It is possible to avoid the multiphase slip ring assembly, but there are problems with efficiency, cost ...

  3. Methylphosphonyl difluoride - Wikipedia

    en.wikipedia.org/wiki/Methylphosphonyl_difluoride

    Methylphosphonyl difluoride (DF), also known as EA-1251 [2] or difluoro, [3] is a chemical weapon precursor. Its chemical formula is CH 3 POF 2 . It is a Schedule 1 substance under the Chemical Weapons Convention .

  4. Generating set of a group - Wikipedia

    en.wikipedia.org/wiki/Generating_set_of_a_group

    The 5th roots of unity in the complex plane form a group under multiplication. Each non-identity element generates the group. In abstract algebra, a generating set of a group is a subset of the group set such that every element of the group can be expressed as a combination (under the group operation) of finitely many elements of the subset and their inverses.

  5. Corecursion - Wikipedia

    en.wikipedia.org/wiki/Corecursion

    In computer science, corecursion is a type of operation that is dual to recursion.Whereas recursion works analytically, starting on data further from a base case and breaking it down into smaller data and repeating until one reaches a base case, corecursion works synthetically, starting from a base case and building it up, iteratively producing data further removed from a base case.

  6. Tarn Adams - Wikipedia

    en.wikipedia.org/wiki/Tarn_Adams

    Tarn Adams (born April 17, 1978) is an American computer game programmer, best known for his work on Dwarf Fortress. He has been working on the game since 2002 together with his older brother Zach.

  7. Dissipation factor - Wikipedia

    en.wikipedia.org/wiki/Dissipation_factor

    In physics, the dissipation factor (DF) is a measure of loss-rate of energy of a mode of oscillation (mechanical, electrical, or electromechanical) in a dissipative system. It is the reciprocal of quality factor, which represents the "quality" or durability of oscillation.

  8. Dwarf Fortress - Wikipedia

    en.wikipedia.org/wiki/Dwarf_Fortress

    The "DF to Minecraft" utility allows players to view their Dwarf Fortress maps by converting them into Minecraft structures. [70] Adams has acknowledged the role of the community in supporting development and endorsed third-party tools, visualizers and interface code; indeed, he has said that he admires third-party developers who create tools ...

  9. Generating set of a module - Wikipedia

    en.wikipedia.org/wiki/Generating_set_of_a_module

    In mathematics, a generating set Γ of a module M over a ring R is a subset of M such that the smallest submodule of M containing Γ is M itself (the smallest submodule containing a subset is the intersection of all submodules containing the set).