Annotations

Research of stability mechanisms of heterotrophic organisms to unfavorable abiotic factors using the example of Artemiasalina cysts

Authors

Juliana Nikolaeva

Country

Russia

Year of defence

2008

Scientific guidance

Anton Syroeshkin

The work devoted to the study of mechanisms of stability a cysts of Artemiasalina to unfavorable temperature effects and the neutron flux with different intensities.

Computer realization of geometric methods in Maxwellian optics

Authors

Dmitry Kulyabov

Country

Russia

Year of defence

2017

In the thesis we construct geometrical description of Maxwell’s equations in terms of the fiber bundles. Different variants of the permeability tensor are described and, accordingly, various variants of the geometrization of the Maxwell equations are proposed. In particular, we propose a variant of geometrization based on a quadratic metric. It leads to equations of the Yang–Mills type. We also construct a symplectic Hamiltonian for the Maxwell equations without a source. The described formalism is demonstrated in application to problems of transformational optics and lens calculations. Analytical calculations are verified using numerical methods.