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  2. United States Army - Wikipedia

    en.wikipedia.org/wiki/United_States_Army

    v. t. e. The United States Army ( USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution. [14] The Army is the oldest branch of the U.S. military and the most senior in order of precedence. [15]

  3. Enterprise systems engineering - Wikipedia

    en.wikipedia.org/wiki/Enterprise_systems_engineering

    Enterprise systems engineering ( ESE) is the discipline that applies systems engineering to the design of an enterprise. [1] As a discipline, it includes a body of knowledge, principles, and processes tailored to the design of enterprise systems. An enterprise is a complex, socio-technical system that comprises interdependent resources of ...

  4. Operating system - Wikipedia

    en.wikipedia.org/wiki/Operating_system

    An operating system ( OS) is system software that manages computer hardware and software resources, and provides common services for computer programs . Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, peripherals, and ...

  5. United States customary units - Wikipedia

    en.wikipedia.org/wiki/United_States_customary_units

    The most widely used area unit with a name unrelated to any length unit is the acre.The National Institute of Standards and Technology formerly contended that customary area units are defined in terms of the square survey foot, not the square international foot, but from 2023 it states that "although historically defined using the U.S. survey foot, the statute mile can be defined using either ...

  6. United States Army enlisted rank insignia - Wikipedia

    en.wikipedia.org/wiki/United_States_Army...

    United States Army enlisted rank insignia. The chart below shows the current enlisted rank insignia of the United States Army, with seniority, and pay grade, increasing from right to left. The enlisted ranks of corporal (E-4) and higher are considered non-commissioned officers (NCOs). The rank of specialist is also in pay grade E-4, but does ...

  7. Systems engineering - Wikipedia

    en.wikipedia.org/wiki/Systems_engineering

    Product Systems Engineering (PSE) is the traditional systems engineering focused on the design of physical systems consisting of hardware and software. Enterprise Systems Engineering (ESE) pertains to the view of enterprises, that is, organizations or combinations of organizations, as systems. Service Systems Engineering (SSE) has to do with ...

  8. Evaluation - Wikipedia

    en.wikipedia.org/wiki/Evaluation

    Evaluation. In common usage, evaluation is a systematic determination and assessment of a subject's merit, worth and significance, using criteria governed by a set of standards. It can assist an organization, program, design, project or any other intervention or initiative to assess any aim, realizable concept/proposal, or any alternative, to ...

  9. Services Selection Board - Wikipedia

    en.wikipedia.org/wiki/Services_Selection_Board

    Services Selection Board. Services Selection Board ( SSB) is an organization that assesses the candidates for becoming officers into the Indian Armed Forces. The board evaluates the suitability of the candidate for becoming an officer using a standardized protocol of evaluation system which constitutes personality, intelligence tests, and ...