Resonance degenerate plane lattice of magnetodielectric spheres with a hole
The solution of the problem on electromagnetic waves scattering by a plane lattice of magnetodielectric spheres, in which the lattice degenerate resonance is excited, is considered.
Structural Function Development for Electromagnetic Interactions in the System of Multiple Resonant Magnetodielectric Spheres
An approach to derive structure functions of electromagnetic interactions in the system of multiple resonant magnetodielectric spheres is considered. Expressions for magnticand electrical-type tensor functions of electromagnetic interactions in the system of spheres are obtained, the expressions for structure functions of magnetic and electric type are analyzed. The investigations of resonance properties of electromagnetic interactions in many-body systems attract considerable attention. In the present paper, the analysis of electromagnetic interactions in many-body systems is restricted to the case of spatial systems of the small uniform resonant magnetodielectric spheres [1]. In such spatial structures, the electromagnetic interactions between spheres and the spheres themselves have resonance properties. Structural resonances of electromagnetic interactions between the spheres can influence the internal resonances of the spheres and their fine structure, which allows a theoretical and experimental approach to be developed for examination of electromagnetic interactions in multiple-sphere systems. It is convenient to describe the features of electromagnetic interactions in sphere systems by introducing the notion of structure functions of electromagnetic interactions. In the case of crystal lattices these functions are related to the so-called Ewald lattice sums, playing an important role in the dynamic theory of crystal lattices [2]. Structure functions may be useful in theoretical and experimental studies of resonance electromagnetic interactions in multiple-sphere systems, in studying physical influence of the lattice structural resonances on the internal resonances of spheres in the lattice and their fine structure [3], and in the experimental estimation of the Ewald sums. The aim of the present study is to develop a new approach to derivation of structure functions of electromagnetic interactions in the system of small uniform ISSN 0040-2508 * Originally published in Radiophysics and Electronics, Vol. 9, No 1, 2004, pp. 200–210. © 2004 Begell House, Inc. 1
Household economy and gendered labor in the 17th centurya.d. on Guam
Abstract The gendered division of labor in household economies is well known in documentary accounts of many societies, although archaeological evidence for it is often elusive. Our study compares ethnohistorical accounts of household organization with archaeological patterns at a 17th-century village on the island of Guam in the Marianas archipelago to determine if these different sources of evidence provide similar insights. We investigated archaeological assemblages from two latte (megalithic) buildings to document their economic activities. Unexpected differences in their assemblages revealed that economic activities varied between the two latte buildings. They were domiciles of a single economically integrated household, but their disparate functions likely signaled a gendered division of labor. This study reveals aspects of gendered labor that documentary accounts do not fully describe. Our findings suggest that the assumption that domestic buildings were functionally redundant in traditional societies must be tested on a case-by-case basis.