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  2. High-temperature operating life - Wikipedia

    en.wikipedia.org/wiki/High-temperature_operating...

    Assuming Tj = 125 °C, commonly used checkpoints are after 48, 168, 500 and 1,000 hours. Different checkpoints for different temperatures can be calculated by using the Arrhenius equation. For example, with an activation energy of 0.7e V, T j of 135 °C and T use of 55 °C the equivalent checkpoints will be at 29, 102, 303 and 606 hours.

  3. Failure rate - Wikipedia

    en.wikipedia.org/wiki/Failure_rate

    The mean time between failures (MTBF, /) is often reported instead of the failure rate, as numbers such as "2,000 hours" are more intuitive than numbers such as "0.0005 per hour". However, this is only valid if the failure rate λ ( t ) {\displaystyle \lambda (t)} is actually constant over time, such as within the flat region of the bathtub curve.

  4. Privilege escalation - Wikipedia

    en.wikipedia.org/wiki/Privilege_escalation

    The arrow represents a rootkit gaining access to the kernel, and the little gate represents normal privilege elevation, where the user has to enter an Administrator username and password. Privilege escalation is the act of exploiting a bug , a design flaw , or a configuration oversight in an operating system or software application to gain ...

  5. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    The server has received a request that requires a negotiated security mechanism, and the response contains a list of suitable security mechanisms for the requester to choose between, [21]: §§2.3.1–2.3.2 or a digest authentication challenge.

  6. Flight level - Wikipedia

    en.wikipedia.org/wiki/Flight_level

    The rule affected only those aircraft operating under IFR when in level flight above 3,000 ft above mean sea level, or above the appropriate transition altitude, whichever is the higher, and when below FL195 (19,500 ft above the 1013.2 hPa datum in the UK, or with the altimeter set according to the system published by the competent authority in ...

  7. Hazard and operability study - Wikipedia

    en.wikipedia.org/wiki/Hazard_and_operability_study

    Where a guide word is meaningfully applicable to a parameter (e.g., "no flow", "more temperature"), their combination should be recorded as a credible potential deviation from the design intent that requires review. The following table gives an overview of commonly used guideword-parameter pairs (deviations) and common interpretations of them.

  8. Operational availability - Wikipedia

    en.wikipedia.org/wiki/Operational_availability

    Operational availability is used to evaluate the following performance characteristic. For a system that is expected to be available constantly, the below operational availability figures translate to the system being unavailable for approximately the following lengths of time (when all outages during a year are added together):

  9. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    Therefore, HTTP/1.1 added status codes 303 and 307 to distinguish between the two behaviours. [1]: §15.4 303 See Other (since HTTP/1.1) The response to the request can be found under another URI using the GET method. When received in response to a POST (or PUT/DELETE), the client should presume that the server has received the data and should ...