activity


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activity

1. the number of disintegrations of a radioactive substance in a given unit of time, usually expressed in curies or disintegrations per second
2. 
a. the capacity of a substance to undergo chemical change
b. the effective concentration of a substance in a chemical system. The absolute activity of a substance B, λB, is defined as exp (μBRT) where μB is the chemical potential

activity

[‚ak′tiv·əd·ē]
(computer science)
The use or modification of information contained in a file.
(nuclear physics)
The intensity of a radioactive source. Also known as radioactivity.
(physical chemistry)
A thermodynamic function that correlates changes in the chemical potential with changes in experimentally measurable quantities, such as concentrations or partial pressures, through relations formally equivalent to those for ideal systems.
(systems engineering)
The representation in a PERT or critical-path-method network of a task that takes up both time and resources and whose performance is necessary for the system to move from one event to the next.

activity

In CPM terminology, a task or item of work that must be performed in order to complete a project.
References in periodicals archive ?
Although most attention has focused on the commercial environment for food, there is also a commercial environment for physical activity, or rather, for physical inactivity.
For new clients, thoroughly discuss the type of business to identify MSB activity, and advise the client accordingly.
Increased business activity was witnessed in the manufacturing sector, auto sales were up, and banks reported an abundance of lending activity.
(14) The general rule is a subjective standard looking to whether the production activities performed by the taxpayer in the United States are "substantial in nature." This is a facts-and-circumstances inquiry, but the Notice lists as relevant factors the relative value added by and the relative cost of the taxpayer's MPGE activity in the United States, the nature of the property, and the nature of the MPGE activity that the taxpayer performs in the United States.
The IRS classified the losses as "passive activity losses"
That mental framework which is followed naturally and/or actively by human activity can be defined as the 'epistemic ground' of that activity.
(3) Clip or copy and complete both the American Journal of Health Studies Registration Form and the Activity Evaluation Form.
This also will give residents who may not be eligible for physical therapy benefits an opportunity to add a physical activity component to their daily regimen.
Finally, charities may organize demonstrations to gain support for its views on a public policy issue, as long as it is a lawful activity, adheres to the financial test of substantially all of its resources being used for the charity's stated purposes, and it is connected to and subordinate to that purpose.
To show either the total or average time spent on each activity during the week, a bar graph works best (see p.
By using "process maps" to understand a sequence of key activities, critical events are translated into predictive financial statements, using ABC resource consumption activity standards.
The litmus test for specificity goes as follows: If Activity A is totally specific to Activity B, then Activity B is totally specific to Activity A.

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