network theory

[′net‚wərk ‚thē·ə·rē] (electricity) The systematizing and generalizing of the relations between the currents, voltages, and impedances associated with the elements of an electrical network.

network theory

the doctrine, in the philosophy of science, associated with Duhem (1861-1916) and Mary Hesse (1980), that scientific statements cannot be appraised in isolation from the overall framework of concepts and theories in which they are stated. See also THEORY RELATIVITY, INCOMMENSURABILITY.

network theory

A theory, advanced by Niels Jerne and Geoffrey Hoffman, that explains the ability of the immune response to regulate itself. According to the theory, lymphocytes form a network of cells bearing idiotypes, each capable of eliciting anti-idiotype antibodies; each “new” antigen disrupts the balance of an immune network by stimulating an antibody response, which then elicits an anti-idiotype-antibody response, followed by further anti-idiotypes, attenuating and eventually quenching the response to bring the system back into balance. Each antigen receptor or idiotype (of either a T or B cell) is capable of evoking the production of anti-idiotypic cells; these cells, or their products, act to downregulate the production of the original idiotype.

单词	network theory
释义	network theory network theory [′net‚wərk ‚thē·ə·rē] (electricity) The systematizing and generalizing of the relations between the currents, voltages, and impedances associated with the elements of an electrical network. network theory the doctrine, in the philosophy of science, associated with Duhem (1861-1916) and Mary Hesse (1980), that scientific statements cannot be appraised in isolation from the overall framework of concepts and theories in which they are stated. See also THEORY RELATIVITY, INCOMMENSURABILITY. network theory network theory A theory, advanced by Niels Jerne and Geoffrey Hoffman, that explains the ability of the immune response to regulate itself. According to the theory, lymphocytes form a network of cells bearing idiotypes, each capable of eliciting anti-idiotype antibodies; each “new” antigen disrupts the balance of an immune network by stimulating an antibody response, which then elicits an anti-idiotype-antibody response, followed by further anti-idiotypes, attenuating and eventually quenching the response to bring the system back into balance. Each antigen receptor or idiotype (of either a T or B cell) is capable of evoking the production of anti-idiotypic cells; these cells, or their products, act to downregulate the production of the original idiotype. FinancialSeen/t
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