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Ecological efficiency is a combination of several related efficiencies that describe resource utilization and the extent to which resources are converted into biomass. [ 1 ] Exploitation efficiency is the amount of food ingested divided by the amount of prey production ( I n / P n − 1 {\displaystyle I_{n}/P_{n-1}} )
Improving operational efficiency begins with measuring it. Since operational efficiency is about the output to input ratio, it must be measured on both the input and output side. Quite often, company management is measuring primarily on the input side, e.g., the unit production cost or the man hours required to produce one unit.
Secondary production is the generation of biomass of heterotrophic (consumer) organisms in a system. This is driven by the transfer of organic material between trophic levels , and represents the quantity of new tissue created through the use of assimilated food.
Operations management textbooks usually cover demand forecasting, even though it is not strictly speaking an operations problem, because demand is related to some production systems variables. For example, a classic approach in dimensioning safety stocks requires calculating the standard deviation of forecast errors .
The term is most commonly used today when referring to the way a single business division or single function operates, as in 'the operating model of the exploration division' or 'the operating model of the HR function'. It can also be used at a much more micro level to describe how a department within a function works or how a factory is laid out.
A single integrated management system may reduce overlap, redundancy, and conflict. Early adopters of this practice include companies such as ExxonMobil and Chevron , which have implemented the Operations Integrity Management System (OIMS) [ 7 ] and the Operations Excellence Management System (OEMS), [ 8 ] respectively.
A management system is a set of policies, processes and procedures used by an organization to ensure that it can fulfill the tasks required to achieve its objectives. [1] These objectives cover many aspects of the organization's operations (including product quality, worker management, safe operation, client relationships, regulatory ...
FCR is the mass of the input divided by the output (thus mass of feed per mass of milk or meat). In some sectors, feed efficiency, which is the output divided by the input (i.e. the inverse of FCR), is used. These concepts are also closely related to efficiency of conversion of ingested foods (ECI).