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  2. Employees' Provident Fund Organisation - Wikipedia

    en.wikipedia.org/wiki/Employees'_Provident_Fund...

    The Board administers a contributory provident fund, pension scheme and an insurance scheme for the workforce engaged in the organised sector in India. [9] The board is chaired by the Union Labour Minister of India. Presently, the following three schemes are in operation under the Act: Employees' Provident Fund Scheme, 1952

  3. File:IFR calculation.pdf - Wikipedia

    en.wikipedia.org/wiki/File:IFR_calculation.pdf

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  4. Earth-centered, Earth-fixed coordinate system - Wikipedia

    en.wikipedia.org/wiki/Earth-centered,_Earth...

    The Earth-centered, Earth-fixed coordinate system (acronym ECEF), also known as the geocentric coordinate system, is a cartesian spatial reference system that represents locations in the vicinity of the Earth (including its surface, interior, atmosphere, and surrounding outer space) as X, Y, and Z measurements from its center of mass.

  5. Electron cyclotron resonance - Wikipedia

    en.wikipedia.org/wiki/Electron_cyclotron_resonance

    The ECR ion source makes use of the electron cyclotron resonance to ionize a plasma. Microwaves are injected into a volume at the frequency corresponding to the electron cyclotron resonance, defined by the magnetic field applied to a region inside the volume. The volume contains a low pressure gas.

  6. PFD allowance - Wikipedia

    en.wikipedia.org/wiki/PFD_allowance

    PFD allowance in work systems is the adjustment done to the normal time to obtain the standard time for the purpose of recovering the lost time due to personal needs, fatigue, and unavoidable delays. [1]

  7. Capital recovery factor - Wikipedia

    en.wikipedia.org/wiki/Capital_recovery_factor

    A capital recovery factor is the ratio of a constant annuity to the present value of receiving that annuity for a given length of time. Using an interest rate i, the capital recovery factor is:

  8. Earth-centered inertial - Wikipedia

    en.wikipedia.org/wiki/Earth-centered_inertial

    To show a location about Earth using the ECI system, Cartesian coordinates are used. The x–y plane coincides with the equatorial plane of Earth. The x-axis is permanently fixed in a direction relative to the celestial sphere, which does not rotate as Earth does.

  9. Engineering notation - Wikipedia

    en.wikipedia.org/wiki/Engineering_notation

    Engineering notation or engineering form (also technical notation) is a version of scientific notation in which the exponent of ten is always selected to be divisible by three to match the common metric prefixes, i.e. scientific notation that aligns with powers of a thousand, for example, 531×10 3 instead of 5.31×10 5 (but on calculator displays written without the ×10 to save space).