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  2. ADA Signs - Wikipedia

    en.wikipedia.org/wiki/ADA_Signs

    The term "ADA Signs" has come into common use in the architectural, construction and signage industries with the advent of the Americans With Disabilities Act, or ADA.The Americans with Disabilities Act regulates accessibility; and includes requirements for signage that is conveniently located and easy to read both visually and through tactile touch.

  3. United States Access Board - Wikipedia

    en.wikipedia.org/wiki/United_States_Access_Board

    The United States Access Board (also known as the Architectural and Transportation Barriers Compliance Board) is an independent agency of the United States government devoted to accessibility for people with disabilities. The Board was created in 1973 to ensure access to federally funded facilities.

  4. Americans with Disabilities Act of 1990 - Wikipedia

    en.wikipedia.org/wiki/Americans_with...

    Under Title III of the ADA, all new construction (construction, modification or alterations) after the effective date of the ADA (approximately July 1992) must be fully compliant with the Americans With Disabilities Act Accessibility Guidelines (ADAAG) [13] found in the Code of Federal Regulations at 28 C.F.R., Part 36, Appendix A.

  5. Data centre tiers - Wikipedia

    en.wikipedia.org/wiki/Data_centre_tiers

    Tier III: full N+1 redundancy of all systems, including power supply and cooling distribution paths Tier IV : as Tier III, but with 2N+1 redundancy of all systems A Tier III system is intended to operate at Tier II resiliency even when under maintenance, and a Tier IV system is intended to operate at Tier III resiliency even when under maintenance.

  6. N2 chart - Wikipedia

    en.wikipedia.org/wiki/N2_Chart

    The N 2 chart or N 2 diagram (pronounced "en-two" or "en-squared") is a chart or diagram in the shape of a matrix, representing functional or physical interfaces between system elements. It is used to systematically identify, define, tabulate, design, and analyze functional and physical interfaces. It applies to system interfaces and hardware ...

  7. Architectural Barriers Act of 1968 - Wikipedia

    en.wikipedia.org/wiki/Architectural_Barriers_Act...

    Uniform standards for the design, construction and alteration of buildings were created so that persons with disabilities will have ready access to and use of them. These Uniform Federal Accessibility Standards Archived 2007-07-12 at the Wayback Machine (UFAS) are developed and maintained by an Access Board and serve as the basis for the ...

  8. System context diagram - Wikipedia

    en.wikipedia.org/wiki/System_context_diagram

    Example of a system context diagram. [1] A system context diagram in engineering is a diagram that defines the boundary between the system, or part of a system, and its environment, showing the entities that interact with it. [2] This diagram is a high level view of a system. It is similar to a block diagram.

  9. Two-tier system - Wikipedia

    en.wikipedia.org/wiki/Two-tier_system

    Some studies have found problems with two-tier systems like higher turnover for newer lower-paid employees and a demoralized workforce. [8] [13] After enough time, a two-tier wage system can permanently lower wages in an entire industry. [8] Lowering productivity expectations for new hires seems to alleviate some of those problems. [9]