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  2. Coupling (computer programming) - Wikipedia

    en.wikipedia.org/wiki/Coupling_(computer...

    Logical coupling (or evolutionary coupling or change coupling) analysis exploits the release history of a software system to find change patterns among modules or classes: e.g., entities that are likely to be changed together or sequences of changes (a change in a class A is always followed by a change in a class B).

  3. Computer program - Wikipedia

    en.wikipedia.org/wiki/Computer_program

    System software includes the operating system, which couples computer hardware with application software. [122] The purpose of the operating system is to provide an environment where application software executes in a convenient and efficient manner. [122] Both application software and system software execute utility programs.

  4. Loose coupling - Wikipedia

    en.wikipedia.org/wiki/Loose_coupling

    Loose coupling in broader distributed system design is achieved by the use of transactions, queues provided by message-oriented middleware, and interoperability standards. [ 2 ] Four types of autonomy, which promote loose coupling, are: reference autonomy , time autonomy , format autonomy , and platform autonomy .

  5. Separation of concerns - Wikipedia

    en.wikipedia.org/wiki/Separation_of_concerns

    In normalized systems separation of concerns is one of the four guiding principles. Adhering to this principle is one of the tools that helps reduce the combinatorial effects that, over time, get introduced in software that is being maintained. In normalized systems separation of concerns is actively supported by the tools.

  6. File:Spin orbit coupling dispersion relation.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Spin_orbit_coupling...

    Box A has no coupling. The dispersion relation shows 2 shifted free space dispersion relations. Box B shows how the gap at k=0 opens for weak coupling. Box C shows the strong coupling limit where the double degenerate minima in the first band merge into a single ground state at k=0.

  7. Coupling Facility - Wikipedia

    en.wikipedia.org/wiki/Coupling_Facility

    A Parallel Sysplex [1] [2] [3] relies on one or more Coupling Facilities (CFs). A coupling facility is a mainframe processor (runs in an own LPAR, with dedicated physical CP, defined through Hardware Management Console (HMC)), with memory and special channels (CF Links), and a specialized operating system called Coupling Facility Control Code ...

  8. Emitter-coupled logic - Wikipedia

    en.wikipedia.org/wiki/Emitter-coupled_logic

    The high power consumption of ECL meant that it has been used mainly when high speed is a vital requirement. Older high-end mainframe computers, such as the Enterprise System/9000 members of IBM's ESA/390 computer family, used ECL, [26] as did the Cray-1; [27] and first-generation Amdahl mainframes. (Current IBM mainframes use CMOS. [28])

  9. Coupling (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Coupling_(disambiguation)

    Quantum coupling, when quantum states in one of the systems will cause an instantaneous change in all of the bound systems; Coupling (computer programming), the degree to which each program module relies on each one of the other modules; Coupling (electronics), the transfer of a signal from one medium or circuit block to another

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