机译:The relationship between cost behaviour and RD efficiency: empirical evidence from Korean stock markets
Korea Adv Inst Sci & Technol, Coll Business, Sch Business & Technol Management, Daejeon, South Korea;
Hoseo Univ, Coll AI Convergence, Dept Big Data & AI, Asan, Chungcheongnam, South Korea;
Cost behaviour; Ramp; D efficiency; investment strategy; data envelopment analysis;