PLT OF AA5 HAS TO ABORT TKOF AND EXIT RWY AT UKT WHEN C182 TAKES OFF OPPOSITE DIRECTION DESPITE ANNOUNCEMENT ON CTAF.

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WIND WAS FROM THE SE (APPROX 160 DEGS/10 KTS) AT UKT. I ANNOUNCED ON CTAF THAT I WAS TAXIING ONTO RWY 11 FOR DEP. AFTER TAXIING ONTO RWY 11 AND STARTING TKOF ROLL; A C182 ANNOUNCED ON CTAF THAT HE WAS TAKING RWY 29 FOR DEP. I IMMEDIATELY TOLD HIM TO HOLD HIS POS AS I HAD ALREADY STARTED MY TKOF ROLL ON RWY 11. HE DID NOT RESPOND AND CONTINUED TO TAXI ONTO RWY 29; AT WHICH POINT I IMMEDIATELY ABORTED MY TKOF. AS I CAME TO A STOP; I NOTICED THAT HE WAS STARTING HIS TKOF ROLL. I MADE AN IMMEDIATE 180 DEG TURN ON THE RWY AND EXITED AT THE NEAREST TXWY; WHICH WAS BEHIND ME. I TAXIED CLR OF THE RWY AND MADE A 10 DEG TURN TO FACE THE RWY. AS I TURNED AROUND; I COULD SEE THAT HE WAS AIRBORNE. HE PASSED APPROX 100 FT ABOVE ME AND APPROX 50 FT AWAY FROM ME LATERALLY. I QUERIED HIM ON THE CTAF IF HE HAD SEEN ME OR HEARD MY RADIO XMISSIONS. HIS RESPONSE WAS THAT HE HAD NOT. WHEN I INFORMED HIM THAT HE HAD CREATED A CONFLICT; HE SEEMED INDIGNANT; AS THOUGH HE HAD NOT DONE ANYTHING WRONG. I ALSO INFORMED HIM THAT TAKING OFF DOWNWIND WAS NOT A SAFE PROC. HIS RESPONSE WAS THAT IT WAS HIS PREROGATIVE AS THE PIC TO TAKE OFF DOWNWIND. I FEEL THAT THE PIC OF THE C182 WAS ACTING IN A CARELESS MANNER. HE EITHER WAS NOT LISTENING TO THE CTAF OR CHOSE TO DISREGARD THE FACT THAT ANOTHER ACFT HAD ALREADY BEGUN A TKOF IN THE OPPOSITE DIRECTION. I ALSO BELIEVE THAT BY CHOOSING TO TAKE OFF DOWNWIND; HE CREATED A POTENTIAL COLLISION CONFLICT BY OPPOSING THE PREVAILING FLOW OF ARPT TFC.