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  2. Noisy-channel coding theorem - Wikipedia

    en.wikipedia.org/wiki/Noisy-channel_coding_theorem

    The channel capacity can be calculated from the physical properties of a channel; for a band-limited channel with Gaussian noise, using the Shannon–Hartley theorem. Simple schemes such as "send the message 3 times and use a best 2 out of 3 voting scheme if the copies differ" are inefficient error-correction methods, unable to asymptotically ...

  3. Standard step method - Wikipedia

    en.wikipedia.org/wiki/Standard_Step_Method

    It uses a combination of the energy, momentum, and continuity equations to determine water depth with a given a friction slope (), channel slope (), channel geometry, and also a given flow rate. In practice, this technique is widely used through the computer program HEC-RAS , developed by the US Army Corps of Engineers Hydrologic Engineering ...

  4. Coherence bandwidth - Wikipedia

    en.wikipedia.org/wiki/Coherence_bandwidth

    Coherence bandwidth is a statistical measurement of the range of frequencies over which the channel can be considered "flat", [1]: 7 or in other words the approximate maximum bandwidth or frequency interval over which two frequencies of a signal are likely to experience comparable or correlated amplitude fading.

  5. Binary symmetric channel - Wikipedia

    en.wikipedia.org/wiki/Binary_symmetric_channel

    Graph showing the proportion of a channel’s capacity (y-axis) that can be used for payload based on how noisy the channel is (probability of bit flips; x-axis). The channel capacity of the binary symmetric channel, in bits, is: [2] = ⁡ (),

  6. Open-channel flow - Wikipedia

    en.wikipedia.org/wiki/Open-channel_flow

    The momentum equation for open-channel flow may be found by starting from the incompressible Navier-Stokes equations : ⏟ + ⏟ ⏞ = ⏟ + ⏟ ⏟ + ⏟ where is the pressure, is the kinematic viscosity, is the Laplace operator, and = is the gravitational potential.

  7. K. Sandeep - Wikipedia

    en.wikipedia.org/wiki/K._Sandeep

    K Sandeep (born 3 April 1973) is an Indian mathematician specialising in elliptic partial differential equations. He was awarded the Shanti Swarup Bhatnagar Prize for Science and Technology , the highest science award in India, for the year 2015 in mathematical science category.

  8. Manning formula - Wikipedia

    en.wikipedia.org/wiki/Manning_formula

    For channels of a given width, the hydraulic radius is greater for deeper channels. In wide rectangular channels, the hydraulic radius is approximated by the flow depth. The hydraulic radius is not half the hydraulic diameter as the name may suggest, but one quarter in the case of a full pipe. It is a function of the shape of the pipe, channel ...

  9. Narrow-bandwidth television - Wikipedia

    en.wikipedia.org/wiki/Narrow-bandwidth_television

    Narrow-bandwidth television (NBTV) is a type of television designed to fit into a channel narrower than the standard bandwidth used for official television standards. The three predominant worldwide broadcast television standards use either 6 MHz wide channels (as in the Americas and Japan, as ATSC and ISDB -T both use those standards) or 8 MHz ...