Level of effort - Work that is not directly associated with components of a work breakdown structure but that can instead be thought of as support work. Examples of level of effort include maintenance and accounting. It is one of three types of activities used to measure work performance as part of earned value management.
Life cycle - The entire process used to build its deliverables. Life cycles are divided into a number of phases. A variety of life cycle models are in use in project management.
Line of balance - A graphical technique used to illustrate relationships between repetitive tasks in projects such as building identical housing units. Each set of repetitive tasks is illustrated as a single line on a chart. Project managers look for places where dependent tasks intersect, indicating that the successor task must be delayed.
Linear sequential model - A linear sequential model moves through a project life cycle’s phases systematically and sequentially. It is typically used for small projects with straightforward requirements, since sequential development makes it difficult to revise design based on testing or preliminary feedback. (See also waterfall model)
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