diffusion theory

diffusion theory

[də′fyü·zhən ‚thē·ə·rē]
(electricity)
The theory that in semiconductors, where there is a variation of carrier concentration, a motion of the carriers is produced by diffusion in addition to the drift determined by the mobility and the electric field.
References in periodicals archive ?
Rogers (1995) describes diffusion theory as a process whereby innovation is communicated, and adopted, through specified channels over time among members of a social system.
That's probably because their fabric performed better than the theoretical maximum: according to the report from LLNL, their new fabric could "sustain gas-transport rates exceeding that of a well-known diffusion theory by more than one order of magnitude.
The second chapter combines the Technology Acceptance Model with the Innovation Diffusion Theory to identify the antecedents for widespread adoption of the Octopus retail e-payment system in Hong Kong.
For example, he suggests the reasonableness of Thomas Jefferson's diffusion theory, which held that the westward spread of slavery would ease abolition by reducing slave populations in older states.
At the core of Atkisson's model for change is Rogers' (1995) innovation diffusion theory, which describes how ideas or innovations are taken up by the mainstream.
Rogers' (2003) diffusion theory emphasizes the importance of understanding the perceptions of potential adopters of an innovation, online education in this case, in the process of adopting an innovation.
ABSTRACT: This work is done to study the effects of local homogenization on the criticality calculations with diffusion theory based codes.
Previous research within the domain of classical diffusion theory indicates that characteristics perceived to be specific to a particular technological innovation, such as cloud computing, might provide a basis for explaining a firm's decision as to whether or not to adopt the innovation (Rogers, 2003).
However, adoption studies on adopters have begun to emerge, including those of (Doolin & Troshani, 2004, 2007), who discussed the different levels of factors affecting the adoption of XBRL by combining the factors from the innovations diffusion theory and the technology acceptance model.
The use of analytical models of turbulent flows and the presence of a set of exact solutions in particles~ dynamics opens the possibility to reach a deeper physical understanding of the nature of two-phase turbulent flows, and to use them for checking of numerical methods and turbulent diffusion theory.
Schrodinger equations and diffusion theory, Birkhauser, 1993; Stochastic processes in quantum physics, Birkhauser, 2000.

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