Results 151 to 160 of about 27,919 (218)
Some of the next articles are maybe not open access.

Asymptotic Control Theory

Journal of the Society for Industrial and Applied Mathematics Series A Control, 1964
Abstract : Some general problems are described concerning the asymptotic behavior of control processes as the time-interval becomes infinite. Some partial results in the general case, and a detailed analysis of a one- dimensional control process are presented.
Bellman, R., Bucy, R.
openaire   +2 more sources

Asymptotic Reactor Theory

Nuclear Science and Engineering, 1961
It is shown that the results of -- asymptotic reactor theory may be derived simply from the condition that an infinite medium (rather than the correct finite medium) diffusion equation be used to describe the thermal neutron fiux in a reactor. In an asymptotic (bare, homogeneous, thermal) reactor, it is possible to describe the thermal flux through ...
K. M. Case   +2 more
openaire   +1 more source

Diffusion Theory via Asymptotics

Transport Theory and Statistical Physics, 1989
It is known that classic diffusion theory can lead to negative scalar fluxes if the external source of particles is anisotropic. The usual derivation of diffusion theory, via a truncated spherical harmonics expansion, gives no consistent way of dealing with this lack of positivity.
openaire   +1 more source

Asymptotically Free Theories

1984
In constructing a theory, information about the properties of the coupling constants between the fields is of primary importance. In a general case, the coupling constants depend on the momenta. To emphasize this circumstance, the notion of effective (or running) coupling constant, or of effective charge, has been introduced.
Masud Chaichian, Nikolai F. Nelipa
openaire   +1 more source

Home - About - Disclaimer - Privacy