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(prō′dŭk-tĭv′ĭ-tē, prŏd′ək-)
1. The quality of being productive.
2. Ecology The rate at which photosynthesizing or chemosynthesizing producers form organic substances that can be used as food by consumers.


the amount of material in terms of BIOMASS or energy generated in a given time in an ECOSYSTEM over and above the STANDING CROP.


the amount or quality or value of the output of a food animal. Best measured in terms of the percentage productivity compared with a target based on productivity of peers. It is customary nowadays to state productivity in terms of return on capital invested, or per head of livestock or per hectare or per unit of workforce, and may be for a period, e.g. annual, lifetime, for a specific unit, e.g. farm, the dairy herd on a mixed farm.

productivity index
includes such items as wool yield per hectare, wins per race starts.
productivity marginal value
see marginal revenue.

Patient discussion about productivity

Q. Is it safe for teenagers to use weight loss products? This isn't an ethical question, but quite literally asking if it is safe for a teenager to use weight loss solutions like weight loss milkshakes and other things of that nature. Thanks in advance!

A. From health point of view- there shouldn’t be a problem if those products are safe. But from an educational view- the minute you start relaying on weight loss products to loose weight for you- you become lazy. Then you’ll loose weight and gain it back with some extra. You need to start acquiring good habits while you are young- balanced nutrition and sports.

Q. i am diabetic :( what is the right diet for me? should i avoid sugar based products? what is the amount of sugar in the blood that consider to be normal ?

A. You may find it all here:

Q. are colon cleansing products safe and are they beneficial?

A. Unless you are having a problem with regularity I wouldn't fool around with cleansing products. Eat more fruits and vegetables and drink LOTS of water. Before I would do any colon cleansing I would add a product like metamucil or bran.

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References in periodicals archive ?
Given the Malmquist productivity index measures TFP growth, improvement in productivity will be indicated by values greater than unity, whereas regress--by that below unity.
Comparison of global and contemporaneous Malmquist productivity index (MPI) for forest products industry for the time period 1997 to 2009.
The three linear programming models allow writing Malmquist input-oriented productivity index (Fare et al.
Malmquist Productivity Index was used to calculate the total factor productivity.
Finally, one additional year of service on average as department chair or program director will reduce the productivity index by 42%.
j] publication acceptance based on research productivity index R, i.
Before we show how the indexes are computed, Figure 2 is used to illustrate expression 96), the productivity index and its components.
An annual Fruit Productivity Index (FPI) was calculated by multiplying the proportion of reproductive plants by the mean number of fruits per unit of plant.
In this second phase of revising the agricultural productivity index--incorporating an environmental component--only nitrogen and pesticides will be reflected, and the productivity index will be revised for the period 1960-91 using 1982 and 1992 as base years.
Overall productivity index (the sum of the four values) is 3.
Of particular interest to them was the development of a total factor productivity index for each factory, using that measure as the dependent variable in each regression.
As long as capital is reimbursed by HCFA on a passthrough basis, a good argument can be made for using a labor productivity index to update rates.

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