?????·?????ˉ??o?§???¨?????????èa??￥????????????ˉ??o?§???¨???????????￥??·???a???±±???é??é?μè??é?￠??????????3¨????2??o-???é?????????±??????ˉ????§???¨???????-? 12?1′????o§???éa??????·?????′?????????

??????è?????????o?????????ˉ????2??o-??-???è?ˉ?￥???°é???°???????????°′???????′??¤??o??????????è?a?12?¤§?¤§è??????o??·￥é??é????·????o?????·￥??????????????????8.è??è??????ˉ????????°′?????????????±??a???′?°′???é?¨?¤???1?????o??￥???

?????·?????ˉ??o?§???¨?????????èa??￥????????????ˉ??o?§???¨???????????￥??·???a???±±???é??é?μè??é?￠??????????3¨????2??o-???é?????????±??????ˉ????§???¨???????-? 12?1′????o§???éa??????·?????′?????????

??????2011?1′??????????oo?￡?é￠?è?????????1′?????μè??????°??????-é?????è??è??????±????????????????20%???è??é???￠?é??????????-??????é???±?30%??????????????o?¤??o??￠?é???????????????￠?é??33%??????é???±?70%??????????????o??¨???è′1????o§??￥????????μ??￥??§??￠??°????-???????????￠?é??15%?????????????oo?￡??1?è?¨?¤o????????3????-???????????????·????????¨????o§???????o§è?????????????????é???±?????¤?????-?????′??????o?????μ?????a??￥????±?????￠??·??o?èˉ??¤????????′????????°??????o2011?1′?????μè?????????±????é??????????¨é?￠??°??1??1????????μ??¨é?￠è?????è??é???????????è§???????é??????????μ?o§??????????o§??￠??￡????????μ?o§?????-é??é???????????????????????é??é?￠??????é??é??é??????-?????§??????¨é???￠??¤?????·±??2??·è?§??????é??é???????¨é????????????ˉ???a??°?????????è????|è??é???????o???é?????é?????è??è????????è????????éa?èˉ???????????oo?￡?è?¨?¤o?????°???????????????è????￥???????????o????????????é?′??ˉ2?1′????????ˉ??¨?????o??-?-?è?2?????′é????????é?′?????°????????????é???????￥?¤§é??????oo???????????￥??′??????????o????è??è?￥????°±??ˉèˉ′?|??????°???????????¨è￠??????oè?¤??ˉ????¤±????o?è????????é?￡?1????????????a???????????￥?°?????1??μ??°′????-¤?¤??????¨??￥é???????o????????????????????????é??è|????è|?é????????è?aèo??????o????????????è?′????????o?????￥?-¤é??????????￥???é￡?é???????????????2￥é??é?2?°′????????1??oETD-???è′′???è?a?2???§???è???2￥é??é?2?°′??·?????????é?2?°′?????ˉ?????§è??è??è???¤§?o???§é?2?°′?????????????o?è§￡??3????°′?1?è?|???