Using the augmented spherical wave method we calculate the electronic and magnetic structure of Fe4N and Mn4N. Both nitrides are found to order magnetically exhibiting ferroand ferrimagnetic spin alignment respectively in agreement with neutron data. A comparison with Goodenough's phenomenological model as well as with Heusler alloys is given.

A quantum measurement model based upon restricted path-integrals allows us to study measurements of generalized position in various one-dimensional systems of phenomenological interest. After a general overview of the method we discuss the cases of a harmonic oscillator, a bistable potential and two coupled systems, briefly illustrating their applications. PACS: 03.65.Bz, 06.30.-k, 74.50.+r

This review explores the most significant dimensions and findings of phenomenological approaches in anthropology. We spell out the motives and implications inherent in such approaches, chronicle their historical dimensions and precursors, and address the ways in which they have contributed to analytic perspectives employed in anthropology. This article canvasses phenomenologically oriented rese...

These chapters discuss the problems of nucleation, spinodal decomposition and continuous ordering, and domain growth. The first and most obvious question that we will address is “What is the nature of these processes?” We will begin with simple theories that yield most of the physics correctly, but many of the details are not quite right. We will compare these theories with data from experiment...

The phenomenological model of Khossravi and Connors (1992) has been adopted to calculate the electrophoretic mobility of drugs at different concentrations of solvents in a binary mixture. The accuracy and predictability of the model have been evaluated employing 14 experimental data sets by using average percentage mean deviation (APMD). The obtained APMD for correlative and predictive studies ...

We present finite-size scaling and phenomenological renormalization equations for calculations of the critical points of the electronic structure of atoms and molecules. Results show that the method is efficient and very accurate for estimating the critical screening length for one-electron screened Coulomb potentials and the critical nuclear charge for two-electron atoms. The method has potent...

Langevin approach is proposed as an intuitive phenomenological framework to describe nuclear dissipative phenomena such as heavy ion reactions and fission decay. We present a method to integrate Langevin equation directly with the computer-simulated langevin force. Examples are given for a free motion of Brownian particle and for nuclear fission as a diffusion over a barrier.

The suggested formulation of the laws governing the physics of gravitation provides new phenomenological considerations for a mathematical method of elucidating and measuring phenomena. A systematic treatment with broader conceptual framework, than the conventional formalism is presented advancing new physical relationships and fundamental constants that are based on known fundamental constants...