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  2. Short-time Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Short-time_Fourier_transform

    The short-time Fourier transform (STFT) is a Fourier-related transform used to determine the sinusoidal frequency and phase content of local sections of a signal as it changes over time. [1] In practice, the procedure for computing STFTs is to divide a longer time signal into shorter segments of equal length and then compute the Fourier ...

  3. Short-term memory - Wikipedia

    en.wikipedia.org/wiki/Short-term_memory

    The idea of separate memories for short-term and long-term storage originated in the 19th century. [2] A model of memory developed in the 1960s assumed that all memories are formed in one store and transfer to others store after a small period of time.

  4. Gabor transform - Wikipedia

    en.wikipedia.org/wiki/Gabor_transform

    The Gabor transform, named after Dennis Gabor, is a special case of the short-time Fourier transform.It is used to determine the sinusoidal frequency and phase content of local sections of a signal as it changes over time.

  5. Vortex indicator - Wikipedia

    en.wikipedia.org/wiki/Vortex_Indicator

    If a trader does opt to use a very short time frame, such as 5 minutes, this should be combined with a long parameter of 34 or 55 periods. Because of its universal applicability, the Vortex Indicator is suitable for both short term traders as well as longer term fund managers who may wish to identify larger macro trends within a market.

  6. Short Interframe Space - Wikipedia

    en.wikipedia.org/wiki/Short_Interframe_Space

    Short Interframe Space (SIFS), is the amount of time in microseconds required for a wireless interface to process a received frame and to respond with a response frame. It is the difference in time between the first symbol of the response frame in the air and the last symbol of the received frame in the air.

  7. Earthquake swarm - Wikipedia

    en.wikipedia.org/wiki/Earthquake_swarm

    With 1,620 small events in late January 2010, this swarm is the second-largest ever recorded in the Yellowstone Caldera. Interestingly, most of these swarms have "rapid-fire" characteristics: they seemingly appear out of nowhere and can churn out tens or hundreds of small to moderate quakes within a very short time frame.

  8. Reducing daily sitting time by 40 minutes may help prevent ...

    www.aol.com/reducing-daily-sitting-time-40...

    The results show that as little as 40 minutes of less sedentary time could improve back pain. In the United States, ... such as the small size and relatively short time frame of the original trial ...

  9. Short-term trading - Wikipedia

    en.wikipedia.org/wiki/Short-term_trading

    Day trading is an extremely short-term style of trading in which all positions entered during a trading day are exited the same day. Short term trading can be risky and unpredictable due to the volatile nature of the stock market at times. Within the time frame of a day and a week many factors can have a major effect on a stock's price.