"In our relations with one another, we are not owners of the utility of things, but of their value, and value is the appraisal made of reciprocal services."

The strength of a tie according to Professor Mark Granovetter can be analyzed by looking at a combination of; the amount of time, the emotional intensity, the intimacy and mutual confiding, and the reciprocal services between those which the tie exists.

This created a complex financial situation in which there were two-way transfer charges between Radio 270 and Proudfoot for reciprocal services rendered.

Groupe DSO was a member of the FALO alliance, a close-knit set of companies providing reciprocal services.

And now, two hours later, when she slumped beside him with long sighs of satisfaction, he felt deeply thankful that her requirements throughout had been entirely selfish and did not include any desire to be of reciprocal service.

After the initial experiment with the dolphins and a reciprocal service in removing any bloodfish, Oldive had asked for volunteers to work more closely with the discerning mammals.

The "strength" of an interpersonal tie is a linear combination of the amount of time, the emotional intensity, the intimacy (or mutual confiding), and the reciprocal services which characterize each tie.

Having stood aside at the earlier date in favour of Victor Hugo, who was admitted in 1841, he thought he might count on a reciprocal service from the poet.

These two young men, moreover, never had occasion to save each other's lives, or to render any reciprocal service.

"You'll see action on ideas like health care, welfare reform, reciprocal service and the responsibility of people to give something to their country," said one close Clinton adviser.