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  2. Time signature - Wikipedia

    en.wikipedia.org/wiki/Time_signature

    Most time signatures consist of two numerals, one stacked above the other: The lower numeral indicates the note value that the signature is counting. This number is always a power of 2 (unless the time signature is irrational), usually 2, 4 or 8, but less often 16 is also used, usually in Baroque music. 2 corresponds to the half note (minim), 4 to the quarter note (crotchet), 8 to the eighth ...

  3. Cryptographic nonce - Wikipedia

    en.wikipedia.org/wiki/Cryptographic_nonce

    A nonce is an arbitrary number used only once in a cryptographic communication, in the spirit of a nonce word. They are often random or pseudo-random numbers. Many nonces also include a timestamp to ensure exact timeliness, though this requires clock synchronisation between organisations. The addition of a client nonce (" cnonce ") helps to ...

  4. IceCube Neutrino Observatory - Wikipedia

    en.wikipedia.org/wiki/IceCube_Neutrino_Observatory

    The IceCube Neutrino Observatory (or simply IceCube) is a neutrino observatory developed by the University of Wisconsin–Madison and constructed at the Amundsen–Scott South Pole Station in Antarctica. [1] The project is a recognized CERN experiment (RE10). [2][3] Its thousands of sensors are located under the Antarctic ice, distributed over ...

  5. Signature recognition - Wikipedia

    en.wikipedia.org/wiki/Signature_recognition

    Signature recognition is an example of behavioral biometrics that identifies a person based on their handwriting. It can be operated in two different ways: It can be operated in two different ways: Static: In this mode, users write their signature on paper, and after the writing is complete, it is digitized through an optical scanner or a ...

  6. Trusted timestamping - Wikipedia

    en.wikipedia.org/wiki/Trusted_timestamping

    Trusted timestamping is the process of securely keeping track of the creation and modification time of a document. Security here means that no one—not even the owner of the document—should be able to change it once it has been recorded provided that the timestamper's integrity is never compromised. The administrative aspect involves setting ...

  7. Spectrum analyzer - Wikipedia

    en.wikipedia.org/wiki/Spectrum_analyzer

    Detectors are used in an attempt to adequately map the correct signal power to the appropriate frequency point on the display. There are in general three types of detectors: sample, peak, and average Sample detection – sample detection simply uses the midpoint of a given interval as the display point value. While this method does represent ...

  8. Low Frequency Analyzer and Recorder - Wikipedia

    en.wikipedia.org/wiki/Low_Frequency_Analyzer_and...

    A working model of the Low Frequency Analyzer and Recorder was delivered in May 1951 which operated with real time analysis of a frequency band of 1 to 1/2 Hz. Along with the working model was a proposal for hydrophones, cables, processing systems and beamforming so that a hydrophone array could present multiple azimuthal beams to be displayed.

  9. Snort (software) - Wikipedia

    en.wikipedia.org/wiki/Snort_(software)

    Snort. Snort is a free open source network intrusion detection system (IDS) and intrusion prevention system (IPS) [4] created in 1998 by Martin Roesch, founder and former CTO of Sourcefire. [5][6] Snort is now developed by Cisco, which purchased Sourcefire in 2013. [7][8][9] In 2009, Snort entered InfoWorld 's Open Source Hall of Fame as one of ...