next up previous
Next: ֵ㷽 Up: ͳѧо Previous: ݴ뿹

㷺ǰѧͲƷϵ

ڽ羲̬ӵ㡢ӱߡȥ㡢ȥߵĵȸоһ֮缸ѧʵϵͳеӦ-- оḻIJ֡ͳѧоĿǴʵϵͳһ㷽ȻӦڸӹ㷺ʵϵͳˣΪͳ ѧоʵоศɵġĶߵĹϵڶʵмԾ廯Ŀǰѵ оѧ[49]ѧ[48,51]̬ѧ[53]ͨ[44,46] [46]ѧ[71]ȸľϵγɵ硣ڴDz׼Що ܽᣬĿǰԼڿչĹΪؽһ°Ӧʵϵͳо˼·뷽

ȣǽһ¿ѧ硣ڵ2.3ͨһijһڵĿѧоһ չ仯ijһµ˼ڴڵIJʵʹУѡȡѧĿѧΪǵо

ѧǽѸٷչһѧƣͳѧ͸оķоںҵģȾѧ [69,70]֮ӿ˴µ˼µĴһѧƵķչӵ Ƚ걸׼¼ܹõķչݻͼǿǿѧ֮ͨġͨŻ۵ķʽ γɵ໥Ӱ죬˼봴ϵĵ봫⡣Ȼ˶ЩھѧƵо֮⣬ͨ ܹȨһ⣬̬ݻΪģ֡

һݵռSISȴݿṩߡġժҪϢйлֻͨĶԭȡ һģݿĽܴĹռѾɡһǿоľ̬ͳȷ InOutȣȨķֲȵԣȨԣȨԣ̾ͳʼӦȨĶԱȣ ȨļĶߵĽͳʵĸı䣬ȨļȨЧʣȨļ۳̶ȵĶʡڴ ϼоݻʰĿȨֵʱݻӵӱΪƫԼļ飬ʱƫ÷ ǶֵҲȨֵ

⣬ѧϿһصݻΪͳƷ--ijһ˼루ΪijƪҪ £ڴϵĴΪͳijƪµķ뱻õʱΪо󣬷Ӱʱɢͳʣ ͺǶϵ߻Ⱦģһоңıڹϵһּ֣ȿΪϵ ģֿΪ籾ݻ̵Ϊͳʵо塣

ǷԷչһȨݻģһѧķչ仯أȨѾڵıߵظֶõ ظֿܵȵӵӰ졣Ȼüӱ߼ӵΪģ͵о󣬵Ǵʱļӱ߼ӵ㽫ͬʱܵȨ ȵӰ졣

Σǽһ²Ʒϵ硣ʳеIJʳϵΪϵ[53,54,55,56]γɵ ̽Ȧе⣬˽Ľṹ뿹֮Ĺϵٽ̬ƽоһѾ ϵеIJƷϵΪϵͿоѧеϵӶķչΪµĶĴµıߵ γɡԴƷϵеĵλΪ϶ķֲڹؼԴıӦIJԵ ṩҪϢͬʱߵĽֵijijҪ̶ȣڷֲֹؼҪ塣ѱߵ ߸Ȩ·ڷõŵֿʵŶԱȡ

оԣϵһЩĿǰоûеµ 磬һϵֻͬʱвƷaͲƷbƷcԽ·Ͳˣ ǾҪʹоȥµļٱϵaԭϲ£ǿԻһa'棬 ΪϻΪʲôṹдо⡣ЩµĽṹѾ˳ÿһߵOutȨ һϵ븱u, u'ʾһֲƷеOutϵͬǿԽַʽInϵʵ ǷУǷµĽṹҪдʵݵо

Ǻܸ˵ط֣ʶһҪⲢ۷ͬʱֲƷͶϵ(PIOTs)ʵѾ ͳƺͷ[72]ֻǷdzϧһУһֲƷһPOITsеţҪıһ² ƷͶͳƷʽϣڲõĽоܹ뵽һоȥҲָᷢµ缸߷ ֶϵоµ˼·



wwwwjs 2004-01-04