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  2. Statistical time-division multiplexing - Wikipedia

    en.wikipedia.org/wiki/Statistical_time-division...

    Time domain statistical multiplexing (packet mode communication) is similar to time-division multiplexing (TDM), except that, rather than assigning a data stream to the same recurrent time slot in every TDM, each data stream is assigned time slots (of fixed length) or data frames (of variable lengths) that often appear to be scheduled in a randomized order, and experience varying delay (while ...

  3. Time-division multiple access - Wikipedia

    en.wikipedia.org/wiki/Time-division_multiple_access

    Most 2G cellular systems, with the notable exception of IS-95, are based on TDMA. GSM, D-AMPS, PDC, iDEN, and PHS are examples of TDMA cellular systems.. In the GSM system, the synchronization of the mobile phones is achieved by sending timing advance commands from the base station which instruct the mobile phone to transmit earlier and by how much.

  4. Dynamic mechanical analysis - Wikipedia

    en.wikipedia.org/wiki/Dynamic_mechanical_analysis

    Dynamic mechanical analysis (abbreviated DMA) is a technique used to study and characterize materials. It is most useful for studying the viscoelastic behavior of polymers . A sinusoidal stress is applied and the strain in the material is measured, allowing one to determine the complex modulus .

  5. Differential thermal analysis - Wikipedia

    en.wikipedia.org/wiki/Differential_thermal_analysis

    Differential thermal analysis (DTA) is a thermoanalytic technique that is similar to differential scanning calorimetry. In DTA, the material under study and an inert reference are made to undergo identical thermal cycles, (i.e., same cooling or heating programme) while recording any temperature difference between sample and reference. [ 1 ]

  6. Thermogravimetric analysis - Wikipedia

    en.wikipedia.org/wiki/Thermogravimetric_analysis

    Thermogravimetric analysis or thermal gravimetric analysis (TGA) is a method of thermal analysis in which the mass of a sample is measured over time as the temperature changes. . This measurement provides information about physical phenomena, such as phase transitions, absorption, adsorption and desorption; as well as chemical phenomena including chemisorptions, thermal decomposition, and ...

  7. Time-division multiplexing - Wikipedia

    en.wikipedia.org/wiki/Time-division_multiplexing

    Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time according to agreed rules, e.g. with each transmitter working in turn.

  8. Use or opt-out of Dynamic emails in AOL Mail - AOL Help

    help.aol.com/articles/use-or-opt-out-of-dynamic...

    Dynamic email gives you the ability to get through your daily email routine even faster, and without ever leaving your inbox. This feature is turned on by default but, can be disabled at any time through the settings. Dynamic emails in AOL Mail can be used to: • Complete tasks. • Shop right from a message. • View travel recommendations.

  9. List of statistical tests - Wikipedia

    en.wikipedia.org/wiki/List_of_statistical_tests

    Unpaired samples are also called independent samples. Paired samples are also called dependent. Finally, there are some statistical tests that perform analysis of relationship between multiple variables like regression. [1] Number of samples: The number of samples of data. Exactness: A test can be exact or be asymptotic delivering approximate ...