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Virtually every product today has a service component to it. The old dichotomy between product and service has been replaced by a Service (economics) service–product continuum . Many products are being transformed into services. For example, IBM treats its business as a service business. Although it still manufactures computers, it sees the ...
The service provider must deliver the service at the exact time of service consumption. The service is not manifested in a physical object that is independent of the provider. The service consumer is also inseparable from service delivery. Examples: The service consumer must sit in the hairdresser's chair, or in the airplane seat.
For example, a restaurant provides a physical good (prepared food), but also provides services in the form of ambience, the setting and clearing of the table, etc. Although some utilities, such as electricity and communications service providers , exclusively provide services, other utilities deliver physical goods, such as water utilities .
Three sectors according to Fourastié Clark's sector model This figure illustrates the percentages of a country's economy made up by different sector. The figure illustrates that countries with higher levels of socio-economic development tend to have less of their economy made up of primary and secondary sectors and more emphasis in tertiary sectors.
Shephard's lemma is a major result in microeconomics having applications in the theory of the firm and in consumer choice. [1] The lemma states that if indifference curves of the expenditure or cost function are convex, then the cost minimizing point of a given good with price is unique.
This is a list of production functions that have been used in the economics literature. Production functions are a key part of modelling national output and national income . For a much more extensive discussion of various types of production functions and their properties, their relationships and origin, see Chambers (1988) [ 1 ] and Sickles ...
In economics, non-convexity refers to violations of the convexity assumptions of elementary economics.Basic economics textbooks concentrate on consumers with convex preferences (that do not prefer extremes to in-between values) and convex budget sets and on producers with convex production sets; for convex models, the predicted economic behavior is well understood.
In a 1938 article, Abram Bergson introduced the term social welfare function, with the intention "to state in precise form the value judgments required for the derivation of the conditions of maximum economic welfare." The function was real-valued and differentiable. It was specified to describe the society as a whole.