TY JOUR TI Organizational and technical reserves for improving the efficiency of construction production KW organizational and technical reserves KW construction efficiency KW factor analysis KW cause-and-effect model KW simulation modeling KW methodology KW synergistic effect KW key performance indicators (KPI) KW diagnostics JO Construction production AU Abramov, I.L. AU Savin, I.M. PY 2026 IS PB Publishing Center RIOR