Mode

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Mode

The mode is the [[value\\ that appears most often in a set of data values. In a discrete distribution, the mode is the value that is most likely to be sampled. It is possible that the mode is not unique, for example, in the case of a uniform distribution. In a continuous distribution, the mode is the maximum of the probability density function. If a continuous distribution has a probability density function with multiple local maxima, then it is said to be multimodal, where any maxima is a local mode.

Mode

Mode refers to the ways language can express relationships to reality or truth. For instance, a modal expression can express that something is desirable, permissible or plausible. Modal expressions in english are often formed with the modal verbs "could", and "should", the modal adverbs "potentially" and "plausibly", or the modal adjectives "possible" and "desirable". The mode of a statement is closely related to grammatical mood, which indicates the speaker's attitude towards a statement, such as the subjunctive, indicative, or jussive mood.

Mode

Mode is a term used to describe musical scales with a specific set of melodic and harmonic behaviours. Common modes in western music are the seven diatonic modes, listed below

  • Ionian Mode
  • Dorian Mode
  • Phrygian Mode
  • Mixolydian Mode
  • Lydian Mode
  • Aeolian Mode
  • Locrian Mode

and also hypodorian mode, found in gregorian chant.

Mode

1. (n.) A particular means of accomplishing something.
What was the mode of entry?
2. (n.) A series of settings on a device used for a specific purpose.
Please set your device to airplane mode.
3. (n.) A variation in gameplay, such as a difficulty level.
Ehhhhhh? Easy mode?

Mode

On Unix systems, the file type combined with the permissions is often referred to as the mode. The mode is stored in a field at least 12 bits long, 3 bits for one of the seven file types, and 9 for the permissions. The mode string is a string which expresses the file type, and the permissions in a human readable form. Take for example, the following line of ls -l output.

drwxr-xr-x 2 root root     0 Jan  1  1970 home

The mode string is drwxr-xr-x, indicating that home is a directory, that everyone may read and traverse (x), but only the owner may write to.

Mode

The following is a list of modes of radio communication used in amateur radio.

Morse code

  • Continuous wave (CW)
  • Modulated continuous wave (MCW) is most often used by repeaters for identification.
  • Frequency shifting continuous wave (FSCW) dots and dashes are transmitted at different frequencies for easier reception in noisy conditions.
  • Prosigns for Morse code (prosigns)

Analog voice

  • Amplitude modulation (AM)
  • Double-sideband suppressed carrier (DSB-SC)
  • Independent sideband (ISB)
  • Single sideband (SSB)
  • Compatible sideband transmission, also called amplitude modulation equivalent (AME)
  • Frequency modulation (FM)
  • Phase modulation (PM)

Digital voice

  • APCO P25 - Found in repurposed public safety equipment from multiple vendors. Uses IMBE or AMBE CODEC over FSK.
  • D-STAR - Open specification with proprietary vocoder system available from Icom, Kenwood, and FlexRadio Systems. Uses AMBE over GMSK with VoIP capabilities.
  • DMR - Found in both commercial and public safety equipment from multiple vendors. Uses AMBE codec over a FSK modulation variant with TDMA.
  • NXDN: Used primarily in commercial 2-way (particularly railroads). Equipment is available from multiple manufacturers. NXDN uses FDMA with bandwidths of 6.25kHz common.
  • System Fusion - Open specification with proprietary vocoder system available from Yaesu. Uses AMBE CODEC with C4FM modulation.
  • FreeDV - Open Source Amateur Digital Voice. Uses LPCNet Quantiser CODEC with differential or coherent PSK.
  • M17 - Another open source digital voice mode based on Codec 2. 4FSK. Utilizes punctured convolutional coding and quadratic permutation polynomials for error control and bit stream re-ordering.

Image

  • Amateur television, also known as Fast Scan television (ATV)
  • Slow-scan television (SSTV)
  • Facsimile

Text and data

  • Amateur teleprinting over radio (AMTOR)
  • D-STAR (Digital Data) a high speed (128 kbit/s), data-only mode.
  • Hellschreiber, also referred to as either Feld-Hell, or Hell a facsimile-based teleprinter
  • Discrete multi-tone modulation modes such as Multi Tone 63 (MT63)
  • Multiple frequency-shift keying (MFSK) modes such as
    • FSK441, JT6M, JT65, and FT8
    • Olivia MFSK
    • JS8
  • Packet radio (AX25)
    • Amateur Packet Radio Network (AMPRNet)
    • Automatic Packet Reporting System (APRS)
  • PACTOR (AMTOR + packet radio)
  • Phase-shift keying:
    • binary phase shift keying: PSK31
    • quadrature phase shift keying: QPSK31
    • 63 baud binary phase shift keying: PSK63
    • 63 baud quadrature phase shift keying: QPSK63
  • Frequency Shift Keying:
    • Radioteletype (RTTY) Frequency-shift keying

Other modes

  • Spread spectrum, which may be analog or digital in nature, is the spreading of a signal over a wide bandwidth.
  • High-speed multimedia radio, networking using 802.11 protocols.

Mode

Mode is a village in Banmauk Township, Katha District, in the Sagaing Region of northern-central Burma.

Mode

The mode of electromagnetic radiation describes the field pattern of the propagating waves. Electromagnetic modes are analogous to the normal modes of vibration in other systems, such as mechanical systems.