Mixed cues from the world markets could see the Sensex open flat this morning. While the US markets ended on a slight negative note, most of the Asian markets are up in early trades.The index in the last two days, has not been able to conquer (close above) the 14,000-mark. If the index fails to do so today as well, one may see a short-term correction in the market.Technicals point out that the index is in over-bought zone. The index is likely to face resistance around 14,020-14,040-14,065 levels, while on the downside the index may find support around 13,875-13,855-13,830 levels.