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  2. Member check - Wikipedia

    en.wikipedia.org/wiki/Member_check

    Member check. In qualitative research, a member check, also known as informant feedback or respondent validation, is a technique used by researchers to help improve the accuracy, credibility, validity, and transferability (also known as applicability, internal validity, [1] or fittingness) of a study. [2]

  3. Check verification service - Wikipedia

    en.wikipedia.org/wiki/Check_verification_service

    Account status verification systems give you the status of the account as of the beginning of the business banking day. They tell you if there is an open active account at that bank and if the check is likely to clear. Status messages such as closed account, NSF, stop payment or invalid account can help determine if a check or ACH transaction ...

  4. Substitute checks in the United States - Wikipedia

    en.wikipedia.org/wiki/Substitute_checks_in_the...

    A substitute check (also called an Image Replacement Document or IRD) [1] is a negotiable instrument that is a digital reproduction of an original paper check.As a negotiable payment instrument in the United States, a substitute check maintains the status of a "legal check" in lieu of the original paper check, as authorized by the Check Clearing for the 21st Century Act (the Check 21 Act).

  5. Wikipedia : WikiProject Chemicals/Chembox validation

    en.wikipedia.org/wiki/Wikipedia:WikiProject...

    e. WikiProject Chemicals and WikiProject Pharmacology are validating the content in the infoboxes { { chembox }} and { { drugbox }}. Values in the infobox are compared with values reported in literature, and when the values match, the revision is stored in the index for chembox and the index for drugbox, respectively.

  6. Data validation - Wikipedia

    en.wikipedia.org/wiki/Data_validation

    This check is essential for programs that use file handling. Format check Checks that the data is in a specified format (template), e.g., dates have to be in the format YYYY-MM-DD. Regular expressions may be used for this kind of validation. Presence check Checks that data is present, e.g., customers may be required to have an email address ...

  7. Launch status check - Wikipedia

    en.wikipedia.org/wiki/Launch_status_check

    A launch status check, also known as a "go/no go poll" and several other terms, occurs at the beginning of an American spaceflight mission in which flight controllers monitoring various systems are queried for operation and readiness status before a launch can proceed. For Space Shuttle missions, in the firing room at the Launch Control Center ...

  8. Luhn algorithm - Wikipedia

    en.wikipedia.org/wiki/Luhn_algorithm

    Luhn algorithm. The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in US patent 2950048A, granted on 23 August 1960. [1]

  9. Substitute check - Wikipedia

    en.wikipedia.org/wiki/Substitute_check

    A substitute check or cheque, also called an image cash letter (ICL), clearing replacement document (CRD), [1] or image replacement document (IRD), [2] is a negotiable instrument used in electronic banking systems to represent a physical paper cheque (check).