The Sensex at the Bombay Stock Exchange jumped 181 points, or 1 percent, to close at a one-week high of 18,792, amid rising Asian markets, today. The Nifty at the National Stock Exchange gained 58 points, or 1 percent, to 5,719.Stock markets in Japan, China, Hong Kong, South Korea and Singapore rose between 0.2 percent and 2 percent.