TY JOUR TI MODERN TRENDS OF DEVELOPMENT OF THE WORLD SHIPBUILDING INDUSTRY BASED ON ECONOMIC CYCLES THEORY KW world shipbuilding KW organization of shipbuilding production KW world shipping market KW Baltic Dry Index KW economic cycle KW Kondratieff waves KW technological mode KW energy efficiency JO Vestnik of Astrakhan State Technical University. Series: Economics AU Nikiforov, V.. AU Neslukhov, D.. PY 2017 IS PB Astrakhan State Technical University