Review of the monograph “The Arctic: a Development Strategy”

The review emphasizes the key features of the monograph “The Arctic: Development Strategy”, prepared by experts of the Council for the Study of Productive Forces of the Ministry of Economic Development of Russia and NArFU named after M.V. Lomonosov. The authors developed a systematic analysis of the development issues of the Russian Arctic and the state development efforts in this macro-region. They studied the preferential regimes of economic activities and the role of mineral resource centers as important drivers of socio-economic development. According to the reviewer, the monograph is of interest both to specialists and to a wide range of readers

Revisiting the models of vibration screening process

This talk presents two approaches for modeling of the vibration screening process. The first approach is analytical. It models the screening process as a diffusion of undersize fraction taking into account the special term for vibration separation (the Brazil nut effect). The talk provides a solution of the corresponding partial differential equation. The solution in turn allows estimation of the screening performance dependence on both deterministic and stochastic factors as well as evaluation of the factors dominance conditions. The talk presents simple evaluation formulae for the screening process performance. The second approach is based on a simulation model. The model deals with monolayer dynamics. Embodying traditional concepts of vibration transportation, the approach introduces some novel techniques of evaluation of the effect of the granular particles shape. Taking into account the particle shape factor may significantly improve the modeling precision for nonspherical particles