network theory


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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.
References in periodicals archive ?
Understanding expressive versus instrumental ties and the different roles within a network is important, but this is just the tip of the iceberg of social network theory.
202) referred to social network theory as a "newly emerging theory", our results show that sociological theories (e.
We first introduce related concepts on the complex network and the agile supply chain network and then present the evolutionary mechanism of agile supply chain network based on complex network theory and make simulation analysis and then discuss the features of scale-free networks generated with the evolutionary mechanism model.
In an effort to understand the power of individuals in our institutional network, we turned to social network theory and specifically to Mark Granovetter's "strength of weak ties" theory, which helped us understand how interpersonal relationships can be powerful within an institution.
Whittle and Spicer (2008) argue that the Actor- Network Theory is clearly a useful method for understanding how actors are enrolled, how allegations of truth are constructed, and how objects and artifacts facilitate organized actions.
First, consider transnational network theory, whose proponents argue that relationships among states are increasingly shaped by interactions among actors from various states who work within the legislative, adjudicative and administrative branches of their respective states, and in particular, in regulatory agencies.
The network theory is useful in explaining social capital as it is based on the beneficial utilisation of various networks ranging from friends, family, acquaintances and other ties in the environment to access opportunities or business expansion.
A Contingency Theory e a Social Network Theory foram empregadas tanto para estudar o compartilhamento do conhecimento, quanto para investigar os seus antecedentes e resultados.
Contrary to the views of many political scientists, who see policy network theory as an explanation of policy stability rather than policy change (p.
Deakin provides a reference (dare I say encyclopedia) of current information systems and communications technologies along with the associated network theory.
Although no single theory completely frames all of the intricate aspects of the supply chain, the Principal-Agent Theory (PAT), Transaction Cost Theory (TCT), Resource-Based View (RBV), and Network Theory (NT) each provides some theoretical underpinning to the components of the supply chain.
At the same time, it will be a challenge to develop an overarching network theory of supply chain management.
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