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For instance, a test that is measuring lifespan may look only at the mean time to failure of the test objects, or it may try to fit a statistical distribution to the data. This is usually referred to as a life distribution, the probability density function of which represents the proportion of products failing at a given time. [ 10 ]
Time management is the process of planning and exercising conscious control of time spent on specific activities—especially to increase effectiveness, efficiency and productivity. [ 1 ] Time management involves demands relating to work , social life , family , hobbies , personal interests and commitments.
Prince was built 1863 and operated 1864–1936, 1955–1968, 1980-present, a product life of over 150 years, a service life of around 125 years. Product lifetime or product lifespan is the time interval from when a product is sold to when it is discarded.
Aspects of object lifetime vary between programming languages and within implementations of a language. The core concepts are relatively common, but terminology varies. For example, the concepts of create and destroy are sometimes termed construct and destruct and the language elements are termed constructor (ctor) and destructor (dtor).
The curtate future lifetime, denoted (), is a discrete random variable representing the remaining lifetime at age , rounded down to whole years. Life expectancy, more technically called the curtate expected lifetime and denoted e x {\displaystyle \,e_{x}\!} , [ a ] is the mean of K ( x ) {\displaystyle K(x)} —that is to say, the expected ...
In animal studies, maximum span is often taken to be the mean life span of the most long-lived 10% of a given cohort. By another definition, however, maximum life span corresponds to the age at which the oldest known member of a species or experimental group has died. Calculation of the maximum life span in the latter sense depends upon the ...
Reliability engineering is a sub-discipline of systems engineering that emphasizes the ability of equipment to function without failure. Reliability is defined as the probability that a product, system, or service will perform its intended function adequately for a specified period of time, OR will operate in a defined environment without failure. [1]
The Y-axis of the diagram shows the business gain to the proprietor of the technology while the X-axis traces its lifetime. The technology life cycle ( TLC ) describes the commercial gain of a product through the expense of research and development phase, and the financial return during its "vital life".