Thermodynamic perturbation theory has been applied to calculate vapour-liquid equilibria (VLE) of pure dipolar/quadrupolar hard sphere fluids. Effective model parameters for axial and nonaxial quadrupole potentials were determined from low temperature saturation properties. Then, VLE calculations were ...
The notion of a "small change" to a flow can be made more precise by requiring, for instance, that the changes in the flow's stability properties be accurately estimated using first-order perturbation theory. The perturbation theory updates of the eigen- and singular values are economical to ...
We have applied so-called “optimised” perturbation theory to resolve the renormalisation-scale (μ) ambiguity of exact O(αs2) QCD calculations of event shape observables in e+e− → hadrons. We fitted the optimised predictions for 15 observables to hadronic Z0 decay data from the SLD ...
A generalized perturbation theory is developed in such a way that it can be applied to a many-body problem with strong forces between the particles. The Brueckner expression for the energy is shown to be the first-order term in a particular case of this expansion. Some of the higher-order...
The sensitivities of various performance parameters to loading pattern changes are calculated with depletion perturbation theory. With these sensitivities, the optimization problem is formulated by linear programming. This method has been applied to two test problems, and an improvement in the cycle burn...
An effective nuclear charge model for the prediction of valence force constants in polyatomic molecules. I The effective nuclear charges have been defined using the quadratic force constants which are obtained by the application of perturbation theory to homonuc... Ohwada,Ken - 《Journal of Chemical...
摘要: Perturbation theory based on Lie transforms and application to motion stability near sun perturbed earth-moon triangular libration points关键词: Libration Perturbation theory Three body problem Eccentric orbits Hamiltonian functions 被引量: 20 ...
A brief survey of singular perturbation theory is given, and a possible application to the computation of electromagnetic fields is discussed. The authors analyze a simple eddy current model problem and show that standard difference schemes are not satisfactory, especially for high frequencies. This al...
Perturbation of Spectra in Hilbert Space The lectures begin with an introduction to perturbation theory of discrete and continuous spectra and the theory of scattering. These methods are then applied to perturbations by annihilation and creation operators. Each of the three ... Friedrichs,O K. - ...
We derive a correct first-order perturbation theory in electromagnetism for cases where an interface between two anisotropic dielectric materials is slightly shifted. Most previous perturbative methods give incorrect results for this case, even to lowest order, because of the complicated discontinuous bound...