South Korean skater Hwang Dae-heon claimed the men's 1,500m title on Wednesday, giving South Korea its first gold medal at the Beijing Winter Olympics.   Canada’s Steven Dubois took silver, and bronze went to Semen Elistratov of the Russian Olympic Committee.   Chinese two-time gold medalist, short-track speed skater Ren Ziwei, was given a penalty in the semi-finals and then disqualified. Photos: Li Hao/GT