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  2. Luby transform code - Wikipedia

    en.wikipedia.org/wiki/Luby_transform_code

    In computer science, Luby transform codes (LT codes) are the first class of practical fountain codes that are near-optimal erasure correcting codes.They were invented by Michael Luby in 1998 and published in 2002. [1]

  3. Hazardous Materials Identification System - Wikipedia

    en.wikipedia.org/wiki/Hazardous_Materials...

    Materials may react non-violently with water or undergo hazardous polymerization in the absence of inhibitors (e.g., propene). 0. Materials that are normally stable, even under fire conditions, and will not react with water, polymerize, decompose, condense, or self-react. Non-explosives (e.g., helium).

  4. Drainage density - Wikipedia

    en.wikipedia.org/wiki/Drainage_density

    Another impact on the hydrograph that drainage density has is a steeper falling limb following the storm event due to its impact on both overland flow and baseflow. [7] [10] The falling limb occurs after the peak of the hydrograph curve and is when overland flow is decreasing back to ambient levels. In higher drainage systems, the overland flow ...

  5. Routing (hydrology) - Wikipedia

    en.wikipedia.org/wiki/Routing_(hydrology)

    Flood routing is a procedure to determine the time and magnitude of flow (i.e., the flow hydrograph) at a point on a watercourse from known or assumed hydrographs at one or more points upstream. The procedure is specifically known as Flood routing, if the flow is a flood. [14] [15] After Routing, the peak gets attenuated & a time lag is ...

  6. HEC-HMS - Wikipedia

    en.wikipedia.org/wiki/HEC-HMS

    The Hydrologic Modeling System (HEC-HMS) is designed to simulate the precipitation-runoff processes of dendritic drainage basins.It is designed to be applicable in a wide range of geographic areas for solving the widest possible range of problems.

  7. Pfafstetter Coding System - Wikipedia

    en.wikipedia.org/wiki/Pfafstetter_Coding_System

    The Pfafstetter Coding System is a hierarchical method of hydrologically coding river basins.It was developed by the Brazilian engineer Otto Pfafstetter [] in 1989. [1] It is designed such that topological information is embedded in the code, which makes it easy to determine whether an event in one river basin will affect another by direct examination of their codes.

  8. Code (semiotics) - Wikipedia

    en.wikipedia.org/wiki/Code_(semiotics)

    In the broadest sense, a code is a (learnt, or arbitrary, or conventional) correspondence or rule between patterns. It can be an arrangement of physical matter, including the electromagnetic spectrum, that stores the potential (when activated) to convey meaning (or a pre-specified result). [1]

  9. BCH code - Wikipedia

    en.wikipedia.org/wiki/BCH_code

    Given a prime number q and prime power q m with positive integers m and d such that d ≤ q m − 1, a primitive narrow-sense BCH code over the finite field (or Galois field) GF(q) with code length n = q m − 1 and distance at least d is constructed by the following method.