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A man-hour or human-hour is the amount of work performed by the average worker in one hour. [1] [2] It is used for estimation of the total amount of uninterrupted labor required to perform a task. For example, researching and writing a college paper might require eighty man-hours, while preparing a family banquet from scratch might require ten ...
LTIFR (lost time injury frequency rate) is the number of lost time injuries occurring in a workplace per 1 million hours worked. An LTIFR of 7, for example, shows that 7 lost time injuries occur on a jobsite every 1 million hours worked. The formula gives a picture of how safe a workplace is for its workers.
A broad study of UK accident data in the mid-1990s showed a relationship of 1 fatality to 207 major injuries, to 1,402 injuries causing three or more days lost time injuries, to 2,754 minor injuries. [8] Heinrich's original files have since been lost so his accident figures cannot be proven. [2]
General Services Administration-approved safes and vaults are certified high-security safes and vault doors for military and embassy applications. Each vault door under this specification meets stringent criteria and has passed the qualification tests and inspections performed at a Government test facility for the General Services Administration.
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In industrial engineering, the standard time is the time required by an average skilled operator, working at a normal pace, to perform a specified task using a prescribed method. [1] It includes appropriate allowances to allow the person to recover from fatigue and, where necessary, an additional allowance to cover contingent elements which may ...
Oppose Man-hour is by far, by orders of magnitude, the more common usage. Google gives ~4 million hits for man-hour, and ~90k hits for person-hour. Google books gives ~3 million hits for man-hour, and ~15k hits for person-hour. —Torchiest talk edits 15:34, 6 January 2013 (UTC) Oppose as above comments and previous RM discussion.
Qalculate! supports common mathematical functions and operations, multiple bases, autocompletion, complex numbers, infinite numbers, arrays and matrices, variables, mathematical and physical constants, user-defined functions, symbolic derivation and integration, solving of equations involving unknowns, uncertainty propagation using interval arithmetic, plotting using Gnuplot, unit and currency ...