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  2. Junction tree algorithm - Wikipedia

    en.wikipedia.org/wiki/Junction_tree_algorithm

    Example of a chordal graph. The third step is to ensure that graphs are made chordal if they aren't already chordal. This is the first essential step of the algorithm. It makes use of the following theorem: [8] Theorem: For an undirected graph, G, the following properties are equivalent: Graph G is triangulated. The clique graph of G has a ...

  3. dBm - Wikipedia

    en.wikipedia.org/wiki/DBm

    80 dBm: 100 kW: Typical transmission power of FM radio station with 50-kilometre (31 mi) range 62 dBm: 1.588 kW: 1.5 kW is the maximum legal power output of a US ham radio station. [12] 60 dBm: 1 kW = 1,000 W: Typical combined radiated RF power of microwave oven elements 55 dBm ~300 W: Typical single-channel RF output power of a K u band ...

  4. Orders of magnitude (power) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(power)

    7 dBm tech: laser in a CD-ROM drive 5–10 × 10 −3: 7 dBm to 10 dBm tech: laser in a DVD player: 10 −2: centi-(cW) 7 × 10 −2: 18 dBm tech: antenna power in a typical consumer wireless router: 10 −1: deci-(dW) 1.2 × 10 −1: 21 dBm astro: total proton decay power of Earth, assuming the half life of protons to take on the value 10 35 ...

  5. Signal strength in telecommunications - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_in...

    Examples. 100 dBμ or 100 mV/m: blanketing interference may occur on some receivers; 60 dBμ or 1.0 mV/m: frequently considered the edge of a radio station's protected area in North America; 40 dBμ or 0.1 mV/m: the minimum strength at which a station can be received with acceptable quality on most receivers

  6. Database - Wikipedia

    en.wikipedia.org/wiki/Database

    An SQL select statement and its result. In computing, a database is an organized collection of data or a type of data store based on the use of a database management system (DBMS), the software that interacts with end users, applications, and the database itself to capture and analyze the data.

  7. Boltzmann machine - Wikipedia

    en.wikipedia.org/wiki/Boltzmann_machine

    In this example there are 3 hidden units (blue) and 4 visible units (white). This is not a restricted Boltzmann machine. A Boltzmann machine, like a Sherrington–Kirkpatrick model, is a network of units with a total "energy" (Hamiltonian) defined for the overall network. Its units produce binary results. Boltzmann machine weights are stochastic.

  8. Two-ray ground-reflection model - Wikipedia

    en.wikipedia.org/wiki/Two-ray_ground-reflection...

    From the figure the received line of sight component may be written as = {() /}and the ground reflected component may be written as = {() (+ ′) / + ′}where () is the transmitted signal, is the length of the direct line-of-sight (LOS) ray, + ′ is the length of the ground-reflected ray, is the combined antenna gain along the LOS path, is the combined antenna gain along the ground-reflected ...

  9. Database normalization - Wikipedia

    en.wikipedia.org/wiki/Database_normalization

    For this example it is assumed that each book has only one author. A table that conforms to the relational model has a primary key which uniquely identifies a row. In our example, the primary key is a composite key of {Title, Format} (indicated by the underlining):