%0 Journal Article %T Methodological tools for horizontal and vertical economic analysis of the state of the arctic transport and logistics system %A Schebarova, N.N. %A Vaseha, M.V. %K horizontal analysis, vertical analysis, Arctic TLS, seasonal decomposition, navigation windows, infrastructure segments, Arctic cargo flows, Northern Sea Route %J Theoretical economics %D 2026 %N 0 %P 16 %I Yaroslavl State Technical University