Serendipitous vs. Systematic Search for Room-temperature Superconductivity

This article summarizes the results from a decade of research which began following a serendipitous discovery and continued with a systematic, Edisonian approach. During the serendipitous stage, there were indications of very-high-Tc superconductivity (at about 200–250 K) detected in laser-treated samples of doped strontium ruthenates. The synthesis route that had been used was strongly out of equilibrium. In spite of our intense studies, later, synthetic efforts along a route closer to equilibrium conditions did not reveal high-Tc superconductivity in the new samples, though there were indications of low-Tc superconductivity. Before the arrival of results on nonequilibrium synthetic routes, it is an appropriate time to summarize the results found within the equilibrium routes, analyze potential corollaries of the complex structure of samples within our initial findings, and discuss the next steps of research

Measurement of Dielectric Loss by Phase Method

The measuring device for dielectric loss tangent of real insulating material (which is a capacitor having capacitance and active resistance) measurement has been considered. The device uses the phase shift method and the temporary separation of the measurement channel. Management of measurement process and processing of the measurement results is carried out by programmable microcontroller. The analysis of the device processing and measurement error estimation has been provided

The contents, forms and methods of family upbringing studying based on the differentiated approach

© 2016 by iSER, International Society of Educational Research. Relevance of research of this problem caused by the fact that the combination of various forms of work with different families helps to achieve mutual understanding in education of children who have difficulties in adapting in the changing world. Therefore, this article is devoted to disclosure the contents, forms and methods of family education studying based on the differentiated approach. The differentiated approach was based on allocation of groups of the families united by the same parameters. We chose pedagogical means adequate to families with various level of psychological and pedagogical culture. The essential moment was the unacceptability of standardization and unification of work with a family. Materials of the article can be useful for students of pedagogical specialties, for teachers of vocational education and training, and for parents as well