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  2. Channel allocation schemes - Wikipedia

    en.wikipedia.org/wiki/Channel_allocation_schemes

    In Fixed Channel Allocation or Fixed Channel Assignment (FCA) each cell is given a predetermined set of frequency channels. FCA requires manual frequency planning, which is an arduous task in time-division multiple access (TDMA) and frequency-division multiple access (FDMA) based systems since such systems are highly sensitive to co-channel interference from nearby cells that are reusing the ...

  3. Deterministic finite automaton - Wikipedia

    en.wikipedia.org/wiki/Deterministic_finite_automaton

    An example of a deterministic finite automaton that accepts only binary numbers that are multiples of 3. The state S 0 is both the start state and an accept state. For example, the string "1001" leads to the state sequence S 0, S 1, S 2, S 1, S 0, and is hence accepted.

  4. Dynamic frequency selection - Wikipedia

    en.wikipedia.org/wiki/Dynamic_frequency_selection

    Dynamic Frequency Selection (DFS) is a channel allocation scheme specified for wireless LANs, commonly known as Wi-Fi. It is designed to prevent electromagnetic interference by avoiding co-channel operation with systems that predated Wi-Fi, such as military radar , satellite communication , and weather radar , and also to provide on aggregate a ...

  5. Region-based memory management - Wikipedia

    en.wikipedia.org/wiki/Region-based_memory_management

    Like stack allocation, regions facilitate allocation and deallocation of memory with low overhead; but they are more flexible, allowing objects to live longer than the stack frame in which they were allocated. In typical implementations, all objects in a region are allocated in a single contiguous range of memory addresses, similarly to how ...

  6. The best gifts to buy your grandkids — from babies to big ...

    www.aol.com/lifestyle/the-best-gifts-to-buy-your...

    This 10' round one has a no-gap enclosure system including a protective net to help eliminate gaps. Bonus: a basketball hoop for hours of fun for everyone. $180 at Walmart.

  7. Object pool pattern - Wikipedia

    en.wikipedia.org/wiki/Object_pool_pattern

    The object pool design pattern is used in several places in the standard classes of the .NET Framework. One example is the .NET Framework Data Provider for SQL Server. As SQL Server database connections can be slow to create, a pool of connections is maintained. Closing a connection does not actually relinquish the link to SQL Server.

  8. Elderly straphanger injured in random Herald Square subway shove

    www.aol.com/elderly-straphanger-injured-random...

    An elderly straphanger was randomly shoved onto subway tracks at the Herald Square station in Manhattan on Sunday afternoon, according to police.

  9. The Power of 10: Rules for Developing Safety-Critical Code

    en.wikipedia.org/wiki/The_Power_of_10:_Rules_for...

    Avoid heap memory allocation. Restrict functions to a single printed page. Use a minimum of two runtime assertions per function. Restrict the scope of data to the smallest possible. Check the return value of all non-void functions, or cast to void to indicate the return value is useless. Use the preprocessor sparingly.