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  2. Input Field Separators - Wikipedia

    en.wikipedia.org/wiki/Input_Field_Separators

    According to the Open Group Base Specifications, IFS is an abbreviation for "input field separators." [1] A newer version of this specification mentions that "this name is misleading as the IFS characters are actually used as field terminators." [2] However IFS is often referred to as "internal field separators."

  3. Lookup table - Wikipedia

    en.wikipedia.org/wiki/Lookup_table

    In computer science, a lookup table (LUT) is an array that replaces runtime computation of a mathematical function with a simpler array indexing operation, in a process termed as direct addressing.

  4. Iterated function system - Wikipedia

    en.wikipedia.org/wiki/Iterated_function_system

    IFS fractals are more related to set theory than fractal geometry. [1] They were introduced in 1981. IFS fractals, as they are normally called, can be of any number of dimensions, but are commonly computed and drawn in 2D. The fractal is made up of the union of several copies of itself, each copy being transformed by a function (hence "function ...

  5. International Futures - Wikipedia

    en.wikipedia.org/wiki/International_Futures

    International Futures (IFs) is a global integrated assessment model designed to help with thinking strategically and systematically about key global systems (economic, demographic, education, health, environment, technology, domestic governance, infrastructure, agriculture, energy and environment). It is housed at the Frederick S. Pardee Center ...

  6. Internal Family Systems Model - Wikipedia

    en.wikipedia.org/wiki/Internal_Family_Systems_Model

    The Internal Family Systems Model (IFS) is an integrative approach to individual psychotherapy developed by Richard C. Schwartz in the 1980s. [ 1 ] [ 2 ] It combines systems thinking with the view that the mind is made up of relatively discrete subpersonalities , each with its own unique viewpoint and qualities.

  7. Integral field spectrograph - Wikipedia

    en.wikipedia.org/wiki/Integral_field_spectrograph

    The brute force approach would have been to build huge spectrographs feeding gigantic detector arrays. Instead, the two Panoramic IFS in operation by 2022, Multi-unit spectroscopic explorer (MUSE) and Visible Integral-field Replicable Unit Spectrograph (VIRUS), [28] are made of respectively 24 and 120 serial-produced optical IFS. This results ...

  8. Installable File System - Wikipedia

    en.wikipedia.org/wiki/Installable_File_System

    The Installable File System (IFS) is a filesystem API in MS-DOS/PC DOS 4.x, IBM OS/2 and Microsoft Windows that enables the operating system to recognize and load drivers for file systems. History [ edit ]

  9. IMF International Financial Statistics - Wikipedia

    en.wikipedia.org/wiki/IMF_International...

    The IFS is the IMF’s principal statistical publication, covering numerous topics of international and domestic finance. It includes, for most countries, data on exchange rates, balance of payments, international liquidity, money and banking, interest rates, prices, etc. [2] Most annual data begins in 1948, quarterly and monthly data dates back to 1957, and most balance of payments data ...