^? ^? ^? ^?? O? 80 ?g ¨?? O? 80 ?g ¨?? O? 80 ?g ¨?? O? 80 ?g ¨? ----? O0?- ±? O0?- ±? O0?- ±? O0?- ± ----@??B&? O0 ?g? 8@??B&? O0 ?g? 8@??B&? O0 ?g? 8@??B&? O0 ?g? 8 ----? x}? ??B J ¨ O0? ?? x}? ??B J ¨ O0? ?? x}? ??B J ¨ O0? ?? x}? ??B J ¨ O0? ? ----? O?/ ±? O?/ ±? O?/ ±? O?/ ± ---- ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 ----ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8 ---- ?B0 ? ×|?′ ¨&? O?B0 ? ×|?′ ¨&? O?B0 ? ×|?′ ¨&? O?B0 ? ×|?′ ¨&? O0 ?g? 80 ?g? 80 ?g? 80 ?g? 8 ---- S?]Q S?]Q S?]Q S?]Q ?? 8 ?? 8 ?? 8 ?? 8  ^? ^? ^? ^?? O? 80 ?g ¨?? O? 80 ?g ¨?? O? 80 ?g ¨?? O? 80 ?g ¨? square6 K?Nl,X¤?K?Nl,X¤?K?Nl,X¤?K?Nl,X¤? square6 +1h0′-1èh*üG>5 s)ú ?1.BnM-nK?Nl êttM6T,XYoúG￡è5àYoúG￡ ?êtt M6TE24áú×Yo,X1Tê4§pè??.BnZYoú G￡Já6?.BnttM6T ?&?Yo,X??è3á6?? ?ê ü ?&?. #? ′?8???ú×Yo ü ?&?,XDá,ì1,X?1èL?.BnYo üt tM6T,Xú×??_ aèa" ?&?,XYoèa+ z5ê??ê ú. #? square6 ??"? ??"? ??"? ??"? square6 ??? ? ?6 #A×G2?× ?6 #A×G2?× square6 ??? ? (=?G2?×(=?G2?× square6 ??? ? G>5 s)ú?G>5 s)ú? ----? O0?- ±? O0?- ±? O0?- ±? O0?- ± square6 t? O? -? Ot? O? -? Ot? O? -? Ot? O? -? O ho? ú×Yo ütM6T¤?&??,XL?z? ? ?N 2 ? ?N 2 ? ?N 2 ? ?N 2??  ?&? ?,Xho   ? ? ?   → = V,èbtM6T,XaN 2aN 2aN 2aN 2  ? ?σ ?  → = G> btM6T,XN 2N 2N 2N 2  ? ?τ ?  → = t? O? -? Ot? O? -? Ot? O? -? Ot? O? -? O ho,X!7Bó ? aN 2aN 2aN 2aN 2??ho!7è _hoBó? N 2N 2N 2N 2?SJ0*üF?ú{*óNNêJ\E@|C_?5ù?SJ0*üF?ú{*óNNêJ\E@|C_?5ù?SJ0*üF?ú{*óNNêJ\E@|C_?5ù?SJ0*üF?ú{*óNNêJ\E@|C_?5ù !7è ?Bó?!7è ?Bó?!7è ?Bó?!7è ?Bó? ho,X )!   =     ?=== t?-? -?-t?-? -?-t?-? -?-t?-? -?- aNaNaNaN?4?h ???  =ε !7Bó ??!7Bó ??!7Bó ??!7Bó ?? 4?h ?1?h ?!7è 4?h ?1?h ?!7è _h ?Bó ? ?? ? )!?G￡4???4?h ?′G￡4? ?h ?,X )! UDG UDG I°?I°?I°?I°??êY a?,X!7AM6'??êY a?,X!7AM6'??êY a?,X!7AM6'??êY a?,X!7AM6'? NNNN?>h ??? γ ----? O0?- ±? O0?- ±? O0?- ±? O0?- ± square6 ? O??-??? O??-??? O??-??? O??-?? square6 4? ?$m,X(=?G2?é z a 3 z a 3 z a 3 z a 3 γτ εσ   = = ééé éSb é ?Sb é ?Sb é ?Sb é ? ééé é *Sb é ? *Sb é ? *Sb é ? *Sb é ? $m(M?2?Dè+rP`#?? ----@??B&? O? ?g@??B&? O? ?g@??B&? O? ?g@??B&? O? ?g square6 ? K h? O? K h? O? K h? O? K h? O EH ?? _ttM6T,X YoúG￡?EHo  hoúG￡?!7ho σ EH ?? _ttM6T ?Y!7hoè ?ú×,X?   σσσ === ∫∫   =σ ? K h? O? K h? O? K h? O? K h? O square6 @?,XE?*ü8× è 0*ü ü0?T,Xêoêêo üo,X0*ü4?aEHG? ü? square6?~ ?3 ??~ ?3 ??~ ?3 ??~ ?3 ? o0*üb0?,Xú×??è ?E ?0?F?8× è,Xh oú×èE ? ,XEH ?8× è4z/?0? 7?7?7? 7? tê,Xt ?ì? ----@??B&? O? ?g@??B&? O? ?g@??B&? O? ?g@??B&? O? ?g square6 ü K h? Oü K h? Oü K h? Oü K h? O úEH ??"???ptM6  ??è ao!?-è0JíB5 ??n?ptM6?!?|??n?ptM6?!?|??n?ptM6?!?|??n?ptM6?!?| α 1￠EH!7 ? EúêE@7?Jê"?4?!7?EúêE@7?Jê"?4?!7?EúêE@7?Jê"?4?!7?EúêE@7?Jê"?4?!7? =∑ +++ +   ==α ptM6T,Xho ασαααα  ===  ü K h? Oü K h? Oü K h? Oü K h? O V,èbptM6,X!7ho V,èbptM6,X!7ho V,èbptM6,X!7ho V,èbptM6,X!7ho ( )ασασασ αα   +===  G> bptM6,X>ho ασαασατ αα     ===  4§A?4§A?4§A?4§A? =α = ατ σσσα == ±=α  σσ α =   σττ α ±== =α == αα τσ ----@??B&? O? ?g@??B&? O? ?g@??B&? O? ?g@??B&? O? ?g square6  ?g? 8 ?g? 8 ?g? 8 ?g? 8 àN 2àN 2àN 2àN 2 =σ  a?bêo,X?? ?ê,XttM6/?? a?bêo,X?? ?ê,XttM6/?? a?bêo,X?? ?ê,XttM6/?? a?bêo,X?? ?ê,XttM6/?? {kN 2{kN 2{kN 2{kN 2[ ]  σσ =  EL=ho E?E?$m,Xo:?6?A?P`#n?]< ′DèJ?b ??? ? ?ê 4 ?ê 4 ?ê 4 ?ê 4[ ]σσ ≤??????=     ??10hoáCYE?$m,XA?*üho?  ?g? 8 ?g? 8 ?g? 8 ?g? 8 square6 z5ê,XY?M6Au1k 1 E ?ê1 E ?ê1 E ?ê1 E ?ê ?÷ l ??-?÷ l ??-?÷ l ??-?÷ l ??- Ua{k CTUa{k CTUa{k CTUa{k CT ?-1  èèè è  èèè è σ""" " σ σ ?-1  èèè è σ """ " 111 1   σ ?-1  èèè è σ""" "   000 0 σ !   ≤?σ σσ 1/?TA?818181 81 square6 ___ _ ?-1 "# èèè è σ"??? ?? Jz?? Jz? "EHo $  == "ttM6/?"ttM6/?"ttM6/?"ttM6/? % =   ==  pi  =  =   =?=  pi ? z [ ]σσ <=×=××== ? %&%&        ???è$μC?z?U"? ?? ? square6 ___ _ ééé é   ?-1  Jv útM6èA?*ühoJv útM6èA?*ühoJv útM6èA?*ühoJv útM6èA?*üho σ ùùù ù èèè è ü ?6tM6èA?*üü ?6tM6èA?*üü ?6tM6èA?*üü ?6tM6èA?*ü ho σ' ùùù ù èèè èCK TG?G￡CK TG?G￡ "# èèè è" ? " ?" ?" ? tM6ì? ?oúd ?oúd ?oúd ?oúd ( =?=∑    α  (  =?=∑   α $ % =  $  =  square6 z5ê [ ]    σ pi   ≥= [ ] ( )( ) &%      ?×= ×× ××=≥ piσpi    & ?×= [ ]    σ  ≥= [ ] %& %    ?×= × ×=≥   σ  ?×=  ,XtM6,èX ,XtM6E?KS,XtM6E?KS,XtM6E?KS,XtM6E?KS square6 ___ _ ééé é   ?-1  ` ` ` `  útM6è,èX  útM6è,èX  útM6è,èX  útM6è,èX  " èèè è σ ùùù ù èèè èA?"A14§X6? A?"A14§X6? S ?,XA? ?9KEQ?S ?,XA? ?9KEQ?S ?,XA? ?9KEQ?S ?,XA? ?9KEQ? ?oúd ?oúd ?oúd ?oúd =∑   &%%    == =∑     %%% &%&% %% &%   =××= × ×= square6 z5ê ?o?,X ?o?,X ?o?,X ?o?,X  EL= EL= EL= EL= [ ]σpi ≤     [ ]σ pi ≤ ×  %  ( ) ( ) % % %   ×=× ××××≤ ? [ ] $ % = square6 ___ _ ééé é ?-1?6-??,X7?G? ρ "# èèè èA?*üh A?*üh ooo o σ ùùù ù èèè è"-??,XtM6ì? "-??,XtM6ì?"-??,XtM6ì?"-??,XtM6ì? +++ +z5êèYz5êèY    σρσ ≤+==   %  =?≥   ρσ  ?6tM6,XE?KS ?6tM6,XE?KS % %  ===  818181 81 L ?6?èV)A?Au? L ?6?èV)A?Au? square6 ?oúdè+EHo ò? ----? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ? square6N ?h 2?b N ?h 2?b N ?h 2?b N ?h 2?b  $m üêo0*ü? ?6 `. #,X?6?? square6 #n$mo:?6?,X?"? rP` square6 E ?$mo:?6?,X ′2? %$m,X?ú ?JYF?4?4?,X4§X×$m,X?ú ?JYF?4?4?,X4§X×$m,X?ú ?JYF?4?4?,X4§X×$m,X?ú ?JYF?4?4?,X4§X× %A?P`5êV ?o(??è#yz ?tEQ??1? square6 -è0J,?,X-è0J,?,X-è0J,?,X-è0J,?,X Xê,Xz??zAu1k ?EY$¤oG??UqB? ----? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ? square6 ? ? ?r? ? ?r? ? ?r? ? ?r square6 ??A? ?V ò/ útM6A? è10KSz/?? C±?C±?C±?C±?  " êêê ê  " square6 A?P`>?5B??6?A?P` × ×× × é ? é ? ×$ ? 5? ×$ ? 5?×$ ? 5?×$ ? 5? square6 A?P`5ê? #y è èè è M-EQ? M-EQ?M-EQ?M-EQ? square6 [è0 [è0 [è0 [è0?A? 7???tEQ7?.?<E?/?,X ,X,X ,X   ? ?4???4???4???4?? square6N 2N 2N 2N 2N0N0N0N0?#\L8ìE ?è? σ "  èèè è ε "? èèè èkk σ  ε?4??4??4??4? ? ? ?r? ? ?r? ? ?r? ? ?r square6 ???".?Jv ü? ê,Xo:?6? square6 %N 2N 2N 2N 2N0N0N0N0 ˉtL !?? Sb kDSb kDSb kDSb kD <^ kD<^ kD<^ kD<^ kD  ? ? kD ? ? kD ? ? kD ? ? kD ￡- kD ￡- kD ￡- kD ￡- kD  ? ? ?r? ? ?r? ? ?r? ? ?r Sb kDSb kDSb kDSb kD SbSbSbSb??? ? ? ? á? ? á? ? á? ? áσ t a 3 t a 3 t a 3 t a 3σ "ε Sb é ?Sb é ?Sb é ?Sb é ? SbSbSbSb ??? ? Sb áSb áSb áSb áσH ? ? ?r? ? ?r? ? ?r? ? ?r <^ kD<^ kD<^ kD<^ kD  <^ á<^ á<^ á<^ áσ ? ? ? ? +bJ$￥/?5àé CK,Xo:> è üa EH4z? ? ???? ???? ???? ??? 3? ? ? ?r? ? ?r? ? ?r? ? ?r ? ? kD ? ? kD ? ? kD ? ? kD ?ê á ?ê á ?ê á ?ê áσ) ? ? ?r? ? ?r? ? ?r? ? ?r ￡- kD ￡- kD ￡- kD ￡- kD  ? ? ?r? ? ?r? ? ?r? ? ?r square6 ?4§? square6 ".?Jv? E?/? ˉtL !?? ?? ?4? ??? á?ê?N\4y square6 ˉt(MU&??!¨_UL$ σ ( ?UL$ σ* èèè èáU áU L$L$L$ L$ σèèè èzUL$zUL$ σ) square6 JJJ J?áUL$ `zUL$>5G￡$m?áUL$ `zUL$>5G￡$m ?ê ?ê ?ê ?ê,X,X,X ,X ?tG??U??? ? ? ?r? ? ?r? ? ?r? ? ?r square6 %?è 4 G l ?/- 4?è 4 G l ?/- 4?è 4 G l ?/- 4?è 4 G l ?/- 4 square6 V ò/#G￡ìèn? ?è 4?è 4?è 4?è 4??? ? δù?ù?ù?ù? ??? ?  háháháhá square6 1/?Tè  "  Y??A? #k,Xê )[?? ú$mú?2O? δ 111 1 ááá á ,X$m ,X$m,X$m,X$m?bN ??bN ??bN ??bN ?××× × δ ááá á ,X$m ,X$m,X$m,X$m&bN ?&bN ?&bN ?&bN ???? ? ? ? ?r? ? ?r? ? ?r? ? ?r square6 %?è 4 G l ?/- 4?è 4 G l ?/- 4?è 4 G l ?/- 4?è 4 G l ?/- 4 l ?/- 4 l ?/- 4 l ?/- 4 l ?/- 4??? ? Ψ "+,  hhh h á áá á square6 Jèê )[ `tM6 4y)[>5G￡$m?b?b?b?b,X?t G??U??? ? ? ?r? ? ?r? ? ?r? ? ?r square6 % ?Z ?? ? [ 5 ?Z ?? ? [ 5 ?Z ?? ? [ 5 ?Z ?? ? [ 5 ? ? ?r? ? ?r? ? ?r? ? ?r square6 V ò /è'".?JvA? >tEQ7? σ  ε?4?M2 ? ,X ¤?&? ê?J LEQè!8êèA? ,X ? ?6 ε ??? ? ò ò ò ò    !???6áè!_+--%? ?6 ε ??? ? ò ò ò ò  !??á6?6á? square6 81í LEQ a,XA? 0? GG??tEQèí σ  ε?4? ò?4? ò?4? ò?4? ò ),X,X,X ,X  èèè èE-?4?,X!¨_UL$ E-?4?,X!¨_UL$? ?? ? &?íhho?¤P? Zè5à?>?ê,X%??!_-? ?6￡?ZèE-/?)?B5 /?/?/?/? ?Z ? ?Z ? ?Z ? ?Z ???? ? square6 81í LEQ a,XA? 0+-?!?êKèaG??tEQèí σ  ε ?4? ò,X?4? ò,X?4? ò,X?4? ò,X  (E-?4?,X!¨_UL$Yè?,X¤P?èE-?4?,X!¨_UL$Yè?,X¤P?èE-?4?,X!¨_UL$Yè?,X¤P?èE-?4?,X!¨_UL$Yè?,X¤P?è JzUL$3k¤P?èE-/?)?B5/? ? [ 5 ? [ 5 ? [ 5 ? [ 5??? ? ? ? ?r? ? ?r? ? ?r? ? ?r square6 ?`?JW%?$m? ê,Xo:?6? ò/Y/?$m,Xho h ??4?è (M&??"uYa,X (M&??"uYa,X(M&??"uYa,X(M&??"uYa,X áL !??áL !??áL !??áL !?? í!82O$mè ????nè aJ%?h ? í!82O$mè ????nè aJ%?h ? %!ê íh,Xho0 ?/<^ á ?/<^ á ?/<^ á ?/<^ áè*üè*üè*üè*ü σ%></èV ò/? ò    4?!?a ?L !?,X,è4?F?ú,ìG> ? ? ? ?r? ? ?r? ? ?r? ? ?r square6 "uYa,X4??L !?è1/? *üF4?p)[" ??G￡ ××× × square6 "uYáL !?×"uYáL !?×"uYáL !?×"uYáL !?× square6 zUL$ σ)>5G￡z,X  ???× square6 ê )[ δ,,, , +%-%,! (JìJ?JìJ?JìJ?JìJ? L _,X6ú?$m? square6 ?Y?JìJ? ü? ê,Xo:?6? square6 JìJ?? ê,Xho h ??4?V ò square6 a".?Jv? ê,Xho h ??4?,ì!¨EW ?-1?h ??4?,ì!¨EW ?-1?h ??4?,ì!¨EW ?-1?h ??4?,ì!¨EW ?-1? ----? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ? square6 N ?à￥- h 2?b N ?à￥- h 2?b N ?à￥- h 2?b N ?à￥- h 2?b  square6 ??A? ?íG￥2$m _4yA?P`èG?*ü-á ú?èJP? z4z,èX,X X,X % % ".?Jv".?Jv".?Jv".?Jv JìJ?JìJ?JìJ?JìJ? N ?à￥- h 2?b N ?à￥- h 2?b N ?à￥- h 2?b N ?à￥- h 2?b  square6 ??? ? ".?Jv _4yê,Xho ".?Jv _4yê,Xho".?Jv _4yê,Xho".?Jv _4yê,Xho h ??4?? ò<.4??h ??4?? ò<.4??h ??4?? ò<.4??h ??4?? ò<.4??  ê,Xho h ??4??(M&?? square6 a? êY,ì à,X ??G￡è!¨_UL$èáUL$× square6 L?1#?zUL$? square6 )??? ? JìJ? _4yê,Xhoh ?JìJ? _4yê,Xhoh ? ?4?? ò<.4?? ?4?? ò<.4?? ?4?? ò<.4?? ?4?? ò<.4?? ê,Xho h ??4??(M&?? square6 üê"?4?aEH4??7è?  ,XptM6T ′>? Jí|5à. #×Jí|5à. #×Jí|5à. #×Jí|5à. #× square6 _4yzUL$ σ)!¨? zUL$ σ)P?P?P? P? -á?á?á?á? square6 4§A??6ú?$mE?p. ? _Xê? ----? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ?? x?B ¨ O0? ? square6 ? O0 ?? ? òG? O0 ?? ? òG? O0 ?? ? òG? O0 ?? ? òG !M6ò???!M6ò???!M6ò???!M6ò??? [ ]  σσ = í%?$mè ((  ==σσ [ ] σσ = í6ú?$mè (( ))  ==σσ [ ] )) σσ = square6 ]<2?D,XEY??U a?b1? ′2?? square6 rL4§XaAu1k1T ò,X??× square6 9KEQAu,X?.B?×9KEQAu,X?.B?×9KEQAu,X?.B?×9KEQAu,X?.B?× square6 $m?Bü?M6,X??× square6 Au1k)úA?,XE￥??Au1k)úA?,XE￥??Au1k)úA?,XE￥??Au1k)úA?,XE￥?? square6 1/??8 a? "% ()"% % ê+ ??? K?XK'??n? ----? O?/ ±? O?/ ±? O?/ ±? O?/ ± square6 V ò/?è81 üTY(?? · ?=?4?1è ü!8 ?,XtM6ì ￥*ó0U ?èE-otM6T,Xhoú×M2  ?è ü(ê? ·LE￥hoar?è5à/?(ê? ·/á E°?èhoC_b ?èE-/?)?B5/?E°?èhoC_b ?èE-/?)?B5/?E°?èhoC_b ?èE-/?)?B5/?E°?èhoC_b ?èE-/?)?B5/?N 2 ??N 2 ??N 2 ??N 2 ????? ? ----? O?/ ±? O?/ ±? O?/ ±? O?/ ± square6 ? EN 2 ???W ? EN 2 ???W ? EN 2 ???W ? EN 2 ???W??? ? σ σ = square6  ??ZhoL?,X/?zèJ?b ??? ? square6 rP`><a?tM6ì ?C^0U' èhoL?,X/?zC^  ?C^0U' èhoL?,X/?zC^ ùG?? ′!8hG￡G?*ü ú$￥E?#?? square6 ,ìí5à??è%?$míhoL?#óz!¨6ú?$m"? square6 "???%?$ma6ú?$m,X úarP`5êYGè VL _,X%?$m ü"#y5ê?10 êtEQEózEW? ,X????><)??a,X6ú?? ---- ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 square6U@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? O NNNNγ U@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? O square6 4?AE@ úEHttM6T,XYoúG￡ A-?A-?A-?A-? . square6 A?A?A?A? ttM6±?GM6? ?? ? square6 ttM6T,Xho ?Y?ho ′′′ ′ èèè è5à′!7ho 5à′!7ho 333 3 ??? ? U@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? O square6 ttM6T?ho@?|D 2bCYM-nK?NlèL?ó}b ?6 #A×?2bCYM-nK?NlèL?ó}b ?6 #A×?2bCYM-nK?NlèL?ó}b ?6 #A×?2bCYM-nK?NlèL?ó}b ?6 #A×? (=?G2?? (=?G2?? M-oG2?? square6 ? ?6 #A×?/? A?A?A? A? ??? ? ·><?!?  ,ìíAE@?|? íC±EH4?   222 2 ?,X?h ?? γ222 2 "222 2 ??? ?  ??? ? ??? ? ??,X?h ? ￥*ó ü?êè??,X?h ? ￥*ó ü?êè??,X?h ? ￥*ó ü?êè??,X?h ? ￥*ó ü?êè γ  ??? ?  γ222 2   2 22 2 ? ?? ? U@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? O square6 ?(=?G2? >h6μn_ square6 ü ?8× èYtEQè'?hoáCY E?$m,X>?!¨_UL$ ′′′ ′ êè?h oa?h ??!7!¨èJ!¨_2?D $m,X? ??$m,X? ??$m,X? ??$m,X? ??G￡ G￡G￡  ??? ? ′′′ ′ "γ ??? ? &??? ? GkttM6T 222 2 ?,X?ho? ′′′ ′ 222 2 "222 2 ??? ?  ??? ? ??? ? ttM6T?ho,Xú×??_V ò/? U@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? O square6 ?M-oG2? ttM6T?ho ü?,X4§pA1tM6T,XA-?         φρφρτ ρ === ∫∫∫∫ ??? ? útM6,X útM6,X útM6,X útM6,X á?b ê á?b ê á?b ê á?b ê     = φ  ??? ? úEH,X úEH,X (?ê (?ê (?ê (?ê U@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? OU@ ?g ¨? O square6 úEHAE@?ho><E??  ρτ ρ =      ==τ ?b útM6E?4ì?b útM6E?4ì?b útM6E?4ì?b útM6E?4ì ùùù ù  ??? ? útM6,X útM6,X útM6,X útM6,X (ê l ??W (ê l ??W (ê l ??W (ê l ??W ,èX ,Xr? úEH? Y?êXú? ??? ? ,X0N? úEH?     pi= ,+    α pi ?=  ---- ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 square6 j￡U? ?g -? Oj￡U? ?g -? Oj￡U? ?g -? Oj￡U? ?g -? O square6 A?A?A?A? AE@?ho"?? n ?ú×?J-5êa úEHA E@,ì à? ?? ? δpiτ   = ??? ? ú1u,XG  X ú1u,XG  X δ??? ? ú1u? n ú1u? n ú1u? n ú1u? n ---- ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 square6  -? O G 8?￠? - ± -? O G 8?￠? - ± -? O G 8?￠? - ± -? O G 8?￠? - ± ( ) ( ) ( ) ( =′?=∑ !!! ττ ττ ′= ??? ? ??? ? + )',XG>5?/??  -? O G 8?￠? - ± -? O G 8?￠? - ± -? O G 8?￠? - ± -? O G 8?￠? - ± square6N 2 }la ?N 2 }la ?N 2 }la ?N 2 }la ? ü )',ìf V,è,XtM6Tè V,èbtM6x4?,X ü )',ìf V,è,XtM6Tè V,èbtM6x4?,X ü )',ìf V,è,XtM6Tè V,èbtM6x4?,X ü )',ìf V,è,XtM6Tè V,èbtM6x4?,X ?ho??,ì1è? ?? ?ê6?/?A1x4???ho??,ì1è? ?? ?ê6?/?A1x4???ho??,ì1è? ?? ?ê6?/?A1x4???ho??,ì1è? ?? ?ê6?/?A1x4?? square6 * * * * )',X ?t{M6T ?Y?ho5à′!7ho? ---- ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 square6 U@ ?gU@ ?gU@ ?gU@ ?g ¨ ?g? 8 ¨ ?g? 8 ¨ ?g? 8 ¨ ?g? 8 square6 z5ê ü4?>ho(??è??10?hoáCYE?$m,XA?*ü ?ho?   ττ ≤ ,+    ττ ≤=   ??? ? &??? ? ??? ? ??? ? êêê ê [ ] ( )[ ]στ %% ?=%?$m? ?? ? [ ] ( )[ ]στ %&% ?=6ú?$m? U@ ?g ¨ ?g? 8U@ ?g ¨ ?g? 8U@ ?g ¨ ?g? 8U@ ?g ¨ ?g? 8 square6 z5ê ?Eˉ> ,XAu1k square6 ? z square6 EY?tM6ì square6 .BnA? ?9KEQ? square6 ___ _ ?V ò/1tM6?|EHT0*üYtêoJ-?è "# / èèè è  "# / èèè è "# / ××× × $m,X $m,X$m,X$m,X A?*ü?ho τ"??? ? ??? ? ??? ?81EH,X,èX81EH,X,èX " èèè èA?? A1EHz×A?? A1EHz× ??? ? ??? ?81úr?EH 81úr?EH  α " "% ,X0N?EHè ü ,ì à,X???è"0N?EH,XêX  ?0N?EHar ?EH,XG?G￡!¨? square6 ?·??·??·??·? ??? ? ?+z5êY ( ) ( ) % %          =<= ×× ××=== ? τ piτ  r?EH,XzC?ó ??? ? ?0A-? òV ò )/?/?/?/?   ??? ? ?qNl?è0N??r?EH,X???ho,ì1è G        ==τ ( )   α pipi ?=  %        = ? ×= ? = ? α ( ) ( )( ) ( ) % %      = × ?×=?== ? ?     α ??? ? ?K?Nl?81ú0N?EH tM6M6/?,ì1,Xr?EHè z ú?$μC??U"?)￠z??&?5×<%è0N?EHEW r?EH ü)ú? ---- ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 ?&? O? ?g? 8 square6 ?U K& ?g9 ???U K& ?g9 ???U K& ?g9 ???U K& ?g9 ?? square6 (M&??ttM6áa±?GM65à ￥*ó5??? square6 AE@2O _ square6?q (ê?q (ê?q (ê?q (ê?AE@ttM6,X5??á ??)4z3??AE@ttM6,X5??á ??)4z3??AE@ttM6,X5??á ??)4z3??AE@ttM6,X5??á ??)4z3? G ?ttM6,X5??/?z,ì àèJT ?Y?ho5à′ !7ho? square6?R (ê?R (ê?R (ê?R (ê? ?ttM6,X5??/?zá,ì àèJT? Y?ho ?Y!7ho? ?U K& ?g9 ???U K& ?g9 ???U K& ?g9 ???U K& ?g9 ?? square6 -?6tM61,è,X7?+AE@K?Nl?ttM6T,X? hoú×V ò/? square6 (M&?(M&?(M&?(M&? +,tM6E?4ì ?&?,X?ho6?a E?+ ,ì?,XNN#× +, ˉt?|&?T,X?ho1bLê× +, ü-?6KSE?,X&??è?ho ????????????   " ατ = ??? ? ??? ? α?tatM6E?KS!¨ "  +"≥, YG,X ′D? ?U K& ?g9 ???U K& ?g9 ???U K& ?g9 ???U K& ?g9 ?? ??? ? ?-áE?&??,X?ho?-áE?&??,X?ho?-áE?&??,X?ho?-áE?&??,X?ho τ-áE?T ?&??ho,X? ???????? νττ = ??? ? ??? ? τ  KSE?&??,X?hoKSE?&??,X?hoKSE?&??,X?hoKSE?&??,X?ho ν3atM6E? KS!¨KS!¨KS!¨KS!¨ "  YG,X ′D? ??? ? ?ê?0?,ìíAE@?| ? ??? #  "  == β? ??? ? ??? ? #"β"??? ?ê,XkA?z? ê,XkA?z? β3atM6E?KS KSKS KS !¨!¨!¨!¨ "  YG,X ′D?  BAò,X><  ?1 ? ′D? square6 ___ _ ?-?6tM6ètM6ì? "" èèè è " èèè ètM6T,XA-? tM6T,XA-? "# / èèè è ??? ? ??? ?"tM6???ho× "tM6???ho×"tM6???ho×"tM6???ho× ??? ? ? üttM6/?á ?,X5ê?èú-?6tM6  ú 6tM6èA?!¨EW?5ù,X???ho? square6 ?·??·??·??·? ??? ? ? ′? ′? ′? ′ % == $$$$" 1Aò><  %=α ·9?? ?k ( ) %%%      =×× ?×== $$ $% " ατ ??? ? ?qNl?? útM6M6/??qNl?? útM6M6/??qNl?? útM6M6/??qNl?? útM6M6/?     %% ?×=×=== "  pi & &%    =×=××== ? ? pi  í úEH,X???ho? ( ) &%&%%        =× ××===  piτ ???è üttM6/?,ì1,X5ê?è-?6A{ ???è üttM6/?,ì1,X5ê?è-?6A{ ???è üttM6/?,ì1,X5ê?è-?6A{ ???è üttM6/?,ì1,X5ê?è-?6A{ *ó,X???ho? ??? ??U!¨ ú,X?k???U!¨ ú,X?k?? ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6 K?Nl,X¤?K?Nl,X¤?K?Nl,X¤?K?Nl,X¤? U?êttM6T,X square6 Yo?-? `>o square6 ho?!7ho `?ho square6 YoYoYoYo ?ho ?z5ê square6 ? ?X: ? ?X: ? ?X: ? ?X: U,XEH4? ?6 aGM6?4?èè üGM6a9KEQ0*ü GM6G? üêG> ? ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6??X:??X:??X:??X: U7??Y?t4? ?í/?GM6èèêo0*ü üA1GM6Yè U? a,XEH4? ?!btEQGM6Y,XGM6?4??W tEQGM6Y,XGM6?4??W GM6?,X(M!^??? ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6 [ 2X: [ 2X: [ 2X: [ 2X:?UttM6T ?Y-? ?Y>o?V ò /// /  ? ? ? ? !??!??!??!?? square6X:X:X:X:??? ? UttM6TUttM6T -? Dè>oLê?V ò/ ò/ ò/ ò/  !??!??!??!?? ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6 4??êU,XttM6T ?Y -?Yo ?,ìh,X!7ho? square6?bm?bm?bm?bm?U?á ?6,X 4x4è?4x4è?4x4è?4x4è? square6?b￡?b￡?b￡?b￡??attM6,X x4??x4??x4??x4?? square6 ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O square6 ?A? `n square6 ? ? ? ? ? ? ? ? ? ? ? ??U ?6 a,XttM6?±?GM6èè ?' V,èb ?6 a,XEH4?? square6y"?~° í￥ ?y"?~° í￥ ?y"?~° í￥ ?y"?~° í￥ ??1,èUT"uYt ?o0 *üè4? ?4x4è′? _è$m,X4? ? ?6 ?"?UEH ,X ) ?? ê _4y ?6?,X ) ?? ê _4y ?6?,X ) ?? ê _4y ?6?,X ) ?? ê _4y ?6? ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O square6 % + ?6′)G2?.Bnh ???_ square6 ?6!? a,XU!?V ò ??? ? )/?/?/?/? square6 A?tM6í/?EH EH×? !EHèJ!5BYn× tM6"?4?? ?tM6"?4?? ?tM6"?4?? ?tM6"?4?? ? EH? ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O square6 a a a a !?-è0J? ?6!,ìC±!?-è0J? ?6!,ìC±!?-è0J? ?6!,ìC±!?-è0J? ?6!,ìC±  ,X?tttM6è ?6 a4??EH,ìíE@|Z ZZ Z θ ?|è?±?GM6èí C±? ,X$m,X$m,X$m,X$m ,XKSz ?? square6 ρ?,X?)[ X? ′ ?6!? a?,XKS zá ?èY square6 ííí í !?,Xh ?? ( ) θρ  +=′′∩ θρ =′′=== ∩  ( ) ρθρ θρθρε  =?+=   square6 ???? ???? ???? ???? ∝ε ??? ? ??? ? ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O square6 % +(=)úG2?.Bnhoú×??_ square6 'ho?b!¨_UL$êè B6μn_èY? ρεσ  == square6 ???? ???? ???? ???? ∝σ square6 !7ho"?ttM6P?zY4????_ ?êèV ò/? ??? ? )??? ? ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O square6 % +M-oG2?.Bn!7ho><E?? square6 +?? )??? ?á6?.Bn!7ho,X??è ′?á6?.Bn!7ho,X??è ′? ,X?)[ X ??EH!5Bt-1è?U.Bn? square6 ttM6T??Yo4?? V,èbttM6,X0NKèG> o2?èA1o2?,X1Tê4§p?o2?èA1o2?,X1Tê4§p?o2?èA1o2?,X1Tê4§p?o2?èA1o2?,X1Tê4§p? G> b EH,XEHo ? ?? ? r ∫=    σ íí 0EH,XoJ-? ? ?? ?r ∫=  ! σ íí 0EH,XoJ-? ? ?? ?!r ∫= !  σ ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O square6  BG>5èY? ??? ? ??? ? == ∫   σ  ! == ∫ σ  == ∫  ! σ ??? ? ??? ? ??? ? *??? ? ú?? )??? ?·9?? ·9?? ?è?è?è?èk? k? ?US  ρáLêè?NOY?  ==∫ !   == ∫∫   ρσ ??? ? 1??? ? GttM6í !EH,X ¤ ê ¤ ê ¤ ê ¤ ê!1bLêèz G?EH !?nE? E?tM66??L)c 2????????E-.BnZ?EH,X!5B E-.BnZ?EH,X!5B ` ` ` ` EH!5B? ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O ú?? )??? ?·9?? ·9?? ?è?è?è?èk? k?  == ∫∫ !!  ρ σ ??? ? 3??? ? ! ! =∫  tM6í ??? ? !EH,X?b ??b ??b ??b ?? ′? ′? ′? ′ EHtM6 í/?EHè1?Y !"??? ?L)c L)c 2?è?è?è?è?? ?? 3??? ?7?' $μC? 7?' $μC?7?' $μC?7?' $μC? ú?? )??? ?·9?? ·9?? *?è?è?è?èk? k?   == ∫∫  ρσ ??? ? 4??? ? !  =∫   tM6í?EH,X?b ê?b ê?b ê?b ê?L)c 2??? ? ￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O￠ ? × ¨ ct? O square6 b +4, ?? ?? ?? ?? ! = ρ  ??? ? ??? ?  ρUEH4? ?6 a,X?)[? ! U,Xk?z? +?? ??? ? `?? `?? ?èk4??êUttM6T ?!7ho@?? ! =σ ??? ? ??? ? ??? ??? ??? ??? ? ?? ? ü?EH?è ü?EH?è  " σ " üttM6T??E?4ì?è  "fff f  èèè è σ "σ  ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6 "???"???"???"??? square6 h*ü?? ?êè ??êè ??êè ??êè ? a  a a a ??? ?  ,X4±í·9è σ ,X!7Bó ???V??1?+ èUì?,X ?{ ??èí9,X?{ ? _? square6 @?,XE?*ü8× è? square6 ??? ? ?í/?4??× square6 ??? ? ??? ? σ 000 0 σ5 ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6 ? O ? × ¨ ct? O? O ? × ¨ ct? O? O ? × ¨ ct? O? O ? × ¨ ct? O square6 to?êUttM6T?Y-? ?Y>oèttM6 ú ￥*ó5??è4? ?$mKèY? _èE-a4??U Y ??íbC?zattM6P?z!¨?b ,Xto,Xto,Xto,Xto ?4?KSUè? ?*ü4??!7ho@?? ?Au?Au?Au?Au 1kèA??\?è6?$μC?1/?T,X2?z?U"? ? O ? × ¨ ct? O? O ? × ¨ ct? O? O ? × ¨ ct? O? O ? × ¨ ct? O square6 ??!7ho 1,èU? !     =σ ??? ? ??? ? ??? ?X: l ??WX: l ??WX: l ??WX: l ??W????   ! ! = ??? ? ??? ? í?í?í?í? !    =σ ??? ? ??? ? ? O ? × ¨ ct? O? O ? × ¨ ct? O? O ? × ¨ ct? O? O ? × ¨ ct? O square6  *ütM6,X?tM62?D  " ! =   ! pi= ( )   αpi ?= ! ??? ? &??? ? ? ?? ? ??? ? ? ?? ? ??? ? square6 JW ?/? _Jv,X ! ?1L) 6,X _Jv><? square6 ___ _ ê UV ò/è?-1 !èèè èA?"UY?? A?"UY?? ?ho `?? _ho,X?? ?!5B? ??!7-? ￥*ó ü tM6tM6tM6tM6 ? ?? ?  %= ??Bó-? ￥*ó ü tM6?tM6?tM6?tM6?  = square6 ?·??·??·??·? %"{4z3oJ0-? òV ò /?/?/?/? %+? ??? ? tM6,X!7hoú×/? òV ò /?/?/?/? ???è+btM6áí/?b?EHè èè 7 78 èèè èUY?? _hoUY?? _ho ￥*ó ü ￥*ó ü ￥*ó ü ￥*ó ü tM6,X?E?4ì?? !!       = ?=σ UY???ho ?6? ￥*ó ü tM6,X?E?4ì?ê tM6tM6tM6tM6 ,XTE?4ì?? ( ) !!     =?= 9σ ( ) !!!       %% 9 = ?=?=σ UY???ho ￥*ó ü ￥*ó ü ￥*ó ü ￥*ó ü tM6,XtM6,XtM6,XtM6,X ?E?4ì?? ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 üto?èUttM6Tá?, ü?!7hoè 5àèE?, ü??ho square6 ü!8??4?1/? ??,X′/?tM6UV-?6?1+ 6? ú6? ú)? üí/??ê,X????ho?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 %-?6tM6U square6 V ò/ ?to?-?6tM6U,X¤?ttM6è JT,X?ho   ??? ? ütM6 <E? ?&??è?h ütM6 <E? ?&??è?h ütM6 <E? ?&??è?h ütM6 <E? ?&??è?h o ?6?a <E?G> ??hof1n)ú??  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 A?A?A?A? square6 ??? ? ?ttM6T ?&??ho,X? ?F?G> b>o  ××× × square6 ??? ? ??? ?ttM6?ho"?tM6?z ?ú×?ttM6?ho"?tM6?z ?ú×?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 A?A?A?A? square6 ??? ? ?ttM6T ?&??ho,X? ?F?G> b>o oo o  ××× × square6 ??? ? ??? ?ttM6?ho"?tM6?z ?ú×ttM6?ho"?tM6?z ?ú×? ?? ? A?ttM6T ?,X?ho τ+, èèè èí íí í ( ) ( ) ! !   : =τ ??? ? ??? ?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O?  ttM6T,X>o× !:+,ttM6/??EH ,Xt4??{,XF?útM6í ?EH !,XM--?×V ò? ??? ?/LE4?/M6/??JAu/LE4?/M6/??JAu 1k??L)c 2××× × &ttM6T"?ho&??,X?z× !ttM6í?EH !,X??-?? ?? ? ?m?? ?m?? ?m?? ?m? ,+   "  "  ?= ??? ? ??? ? ( ) ( ) ! !   : =τ  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 ?ho"?tM6P?z o(=4?ú×èV ò )/?/?/?/? square6 ütM6,XT??E?4ì??  "fff f " ?è?è?è?è?ho ?ho τ ùùù ù  ××× × square6 ü?EH?? "?è?è?è?è?ho??? ?ho???   "       ==τ ??? ? ??? ?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 %1+6tM6U square6 VAu1k7MSTC±?EH ?,X? ?hoè? ?*ü?? ?èK'?èK'?èK'?èK' ???? square6 1+6tM6+5D4ì `7MS?F?ú4? ?èV ò/? ( )  :  & ""     !! ! ?+?==τ ??? ? ??? ?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 ???è7MST,X?ho"?7MSP?z o(=4? ú×èV ò )/?/?/?/? ü?EH?? "??? ? è èè è?ho ?ho ( )" "  !! ! ??==   :  &τ ??? ? ??? ? ü7MSa5D4ì,Xx+ ?? ü7MSa5D4ì,Xx+ ?? ü7MSa5D4ì,Xx+ ?? ü7MSa5D4ì,Xx+ ??  "±"  ?è?è?è?è?ho ?ho ( )  & "  ! ?=τ ??? ? ??? ?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 +b7MS,X?? ???>ho,ì?á?è ?Ax? 7MST,X?ho ?ú×? ?+b7MSS?,X>o 4zHttM6>o,X ! !?5D4ìT,X?ho ü!8,?+9?è1/?T *üE￥@?"1+6tM67M ST,X??ho? "  =τ ??? ? &??? ?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6N 2 N 2 N 2 N 2  ?ho? ?B5"#? ?V ò/1+6tM6?ho #,X/? ò?Y? ·;X?tM6JttM6T,X?ho ? ·;X?tM6JttM6T,X?ho ? ? 0ú ü6? ;?ho# <??_?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 % ú6tM6U square6 +?hof1n)ú-1?ttM6T,X?ho?na <E? ,ì??,ì??,ì??,ì?? square6 A??A??A??A?? square6 C±/??EH 0,X,X,X ,X  úT ?&?,X? ho? ??"x b&?b&?b&?b&? ??? ? ?,X??,X??,X??,X? 4?4?4? 4? ??? ?  ,Xx&?,Xx&?,Xx&?,Xx&? TèV ò/× square6  úT ?&??h o"?o"?o"?o"? ? ?,XúG￡ τ,ì1?,ì1?,ì1?,ì1?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 ú6tM6T?hoúG￡? ( ) ( ) !!   : =τ ??? ? ??? ? ':+, ú?M6,XtM6/?í?EH !,XM--?×,XM--?×,XM--?×,XM--?× +,& ú,XKSz? square6 ü?EH??  " "?è?è?è?è?ho? ?ho?      ! !   :      === piτ ??? ? ??? ?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6  ú)?6;X?tM6U square6 A?JttM6? nA?JttM6? nA?JttM6? nA?JttM6? n δ G  X    èèè è+b? n\?è ?Ax+b? n\?è ?Ax ??ho"?? n ?ú×è è?na <E?,ì?èV ò/? square6 ü?EH?è?ho??? ( ) ( )         ! !       :     ==≈= δpiδpiδ δ δτ ??? ? ??? ?  c ? × -? O? c ? × -? O? c ? × -? O? c ? × -? O? square6 ?4§?1T′/? ??tM6,X????ho  ￥*ó ü ?EH?è ?43?m???><E???     ! !  :  == δτ !: ?EH?{,XttM6M6/?í?EH !,XM--?×,XM--?×,XM--?×,XM--?× δ &ttM6 ü?EH?,X?z× tM62?D? ?-?6 ùùù ù   ??? ?1+61+6 ùùù ù ê1ê1ê1ê1L)>< L)>< 6 ??? ? ú6 ú6 ùùù ù   ??? ? ú)? ú)? ú)? ú)? ùùù ù  square6 ___ _ &-?6tM6?7?UèS ?L?9KEQ 0*üèV ò/? 0*üèV ò/? A?"UttM6T,X??!7ho `???ho? square6 ?·?UttM6T,X??-? `??>o  ￥*ó ü ?n 0?0?0? 0? tM6T? ?? ?   ==    ==  ü ü ü ü tM6,XT??E?4ì?Y??!7ho     "  "    !  ===σ ü ü ü ü tM6,X?EH?Y???ho "  "        ==τ `5ù,X!¨`5ù,X!¨`5ù,X!¨`5ù,X!¨ ??????=×= """     τ σ ???? ???? ???? ???? ' ''  88" êèêèêèêè σ  E°?bE°?bE°?bE°?b τ  ??? ? íb4?KSUè G  " 8èèè è?!7ho?U,X???!7ho?U,X?? ?ho ??U,X?  c ?g? 8 c ?g? 8 c ?g? 8 c ?g? 8 square6 ?!7ho,Xz5ê square6 !7hoú×(MU????!7ho ￥*ó ü EL=tM6 ,XT??E?4ì?èA1? ?&?,X?ho?8Lêê?5à?+9áAuè ′!8 ?,???b ) ? ?o(??? square6 z5ê?UY?? _??ho áCYE? ?7?,X A?*ühoè G [ ]9 9 σσ ≤ [ ]  σσ ≤ square6 íbtM6í/?b?EH,X1,èUè' /?b?EH,X1,èUè' σ9"σêèêèêèêè z5ê ?m?? [ ]σσ ≤=      c ?g? 8 c ?g? 8 c ?g? 8 c ?g? 8 square6 ??ho,Xz5ê square6 ????hoE? ￥*ó ü?EHT ?&??è5àA1 ??!7hoLê? ′!8A1?4?>?ho(??è ,ìh,Xz5ê? [ ]ττ ≤  [ ]τδτ ≤?? ? ? ??? ?=   :      êêê ê íb1tM6,èU [ ]τδτ ≤= ! !   :    c ?g? 8 c ?g? 8 c ?g? 8 c ?g? 8 square6 U,X?zAu1k square6 í4?KSM2;X?tM6UèE? ?Y?!7hoz5 êEˉ> úd× square6 í;X?tM6Uê-?EW?5à>oEW?,XUèí? !7hoa?hoz5ê ?U5×<%× square6 í ü¤o;X?U,X¤o&??èV1+6tM6,X7MS a5D4ì,Xx+ ?è?!7hoa?hoF?EW?è!8 K?Nl ü aM60′8VA|A??K?Nl ü aM60′8VA|A??K?Nl ü aM60′8VA|A??K?Nl ü aM60′8VA|A?? square6 Uz5ê,XY?M6Au1k square6 ? z× square6 EY?tM6ì× square6 .BnA?*ü9KEQ? square6 ___ _ ?JìJ? ,X .6tM6UV ò/??-1? ?? ? ""% èèè è ""% èèè ètM6í6?tM6í6?EH EHEH !,X,X,X ,X ??-? !"%hhh h   èèè è$m,XA?*ü?ho $m,XA?*ü?ho σ9"èèè èA?*ü _ho A?*ü _ho σ" ??? ? square6 A?"U,XA? ?9KEQ ××× × square6 81A? |tM65D4ìS?  èèè è"J ü)ú?z?"J ü)ú?z? square6 ?·???·???·???·?? ?"A?*ü9KEQ?"A?*ü9KEQ?"A?*ü9KEQ?"A?*ü9KEQ square6 + ò+ ò+ ò+ ò /,X-? ò-1è??-?? %  ?==  square6 G ü tM6?TE?4ì ?&? ??è?E?4ì ?&? ? _?tM6?TE?4ì ?&? ??è?E?4ì ?&? ? _?tM6?TE?4ì ?&? ??è?E?4ì ?&? ? _?tM6?TE?4ì ?&? ??è?E?4ì ?&? ? _? +k?A? ?ho ?k? [ ]9  9 % σσ ≤== !!  "  " [ ] &% %% % %   &  9 ×= ×× ×××=≤ ? ? "  !σ square6 +++ +k _A? ?hokk _A? ?hok? ?? ? [ ] !!   "  " σσ ≤==    % [ ] % %% % %   &  ×=×× ×××=≤ ? ? "  !σ square6 í!¨k? # &% &%  =×= square6 ??? ? ?"? ü)ú,X5D4ìS?z  square6 ' ?ì êètM66?!5BLc  ?èA?!8ê6?!5BV ò ò ò ò /?/?/?/? square6 tM6EYk? ü)ú,X5ê????tM6EYk? ü)ú,X5ê????tM6EYk? ü)ú,X5ê????tM6EYk? ü)ú,X5ê???? ho `?? _hoú?E? ?7? ,XA?*üho? G? G? [ ] [ ] !  # ! #     σσ σσ == ==     [ ] [ ]         ====  #  #   σ σ σ σ   = square6 +++ + & =+=+  %( %  ==  square6 ?+ ?+ ?+ ?+ !",X5ê,X5ê,X5ê,X5ê ,&%+&,%+ =?××??×× = square6 ___ _  ò/?7?Uè7?+0? ?L?o ò/?7?Uè7?+0? ?L?o ò/?7?Uè7?+0? ?L?o ò/?7?Uè7?+0? ?L?o "# 0*üè0*üè0*üè0*üè $m,XA?*üho σ"èèè èA?!¨EWG?*ü??YA?!¨EWG?*ü??Y /?tM66(?5?,X$m*üG￡? square6 ??? ? ?1+Jv× square6 ??? ? ?P??!¨ " ",X-?6× square6 ??? ? ? ú6? square6 ?·??·??·??·? #   == square6 +-? ò ?k? square6  B?!7hoz5êèY [ ]       ×= × ×=≥ σ  ! square6 ??? ? ??? ?1+Jv1+Jv square6 1L)è a è aè aè a %1+Jv? !"hhh h   èèè è " ?è?è?è?èJ10hoúCYE? J10hoúCYE? èáCYE? èáCYE? !è1/?T? ?*ü? square6 ??? ? ?-?6 ( )      ×=== " !      ==== "" square6 ??? ? ? ú6    ×== ! pi    ==  %&=%===  = square6 Aèa ú6tM6?C mè1+6tM6?,?m? square6 ___ _  1TU ?oV ò/??-1? " èèè è "% èèè è ("# èèè è "# èèè è σ"èèè è τ"??? ? A?EY?1+Jv _ ?? square6 ?·??·??·??·? square6 ??? ? ?0?U,X>o ò `-? òèV ò/? ?=   #   ===   square6 ??? ? ? B?!7hoz5êEY?tM6 [ ]    &   ?×= × ×== σ  ! 1L)A?EY %1+JvèJ !ùùù ù hhh h   square6 ??? ? ?? U,X??hoz5ê ￠ _Jv><1 %1+Jv,X ! !)  "&%hhh h   7MS? δ "%hhh h  ??? ? & %&%  ,+    :   τ δτ >= ××× ×== ?? !!   +b+b+b+b τ !¨!¨!¨ !¨> >τ@ ,X?,X?,X?,X? !1Tè?UG??EY?tM6 _ ?? square6 ??? ? ?G??EY?1+Jv _ ? ￠ _Jv><1 >%)1+Jv,X ! !)  "%hhh h  èèè è 7MS? δ"hhh h  ??? ?a ?? ??hoz?a ?? ??hoz? %& %  ,+    :   τ δτ <= ××× ×== ?? !!   .BnEY %)1+JvèW6? àê$μC??!7ho ` ??hoz,X?U"? ---- < K ? × c? O? ?g < K ? × c? O? ?g < K ? × c? O? ?g < K ? × c? O? ?g square6  ? ×/? ± ? ×/? ± ? ×/? ± ? ×/? ± X:?RX:?RX:?RX:?RttM6Ta?ho,ìíh,Xú×o2?,X üo,X0*ü&?? üo,X0*ü&?? üo,X0*ü&?? üo,X0*ü&??  ? ×/? ± ? ×/? ± ? ×/? ± ? ×/? ± square6N 2 N 2 N 2 N 2  í;X?tM6èa>oíh,X?hoKY??(MU? square6 +?hof1n)ú-1è81ê><M6′?ho0*üè í;X?tM6T,X?ho0*ü4??G> btM6 <E?? 4?? ?è6??ho#× square6 ?ho"?? n? ? ×?  ? ×/? ± ? ×/? ± ? ×/? ± ? ×/? ± square6 ?6;X?U??,X|D  ? ×/? ± ? ×/? ± ? ×/? ± ? ×/? ± square6 ?6;X?U??@? square6 ??,X!5Baêo,X?? ?ê$m,X?Bü′Gè ? a?btM6′)6(?? a?btM6′)6(?? a?btM6′)6(?? a?btM6′)6(?ìètM6 ò6,X′)?Bü ìètM6 ò6,X′)?Bü ?? ?? ? ! !  "    δ =  ? ×/? ± ? ×/? ± ? ×/? ± ? ×/? ± square6 J-tM6,XJ-tM6,XJ-tM6,XJ-tM6,XX:?RX:?RX:?RX:?R!5B!5B!5B!5B ?KY?tí/?EH,XtM6è?í/?EH4?,Xx&??6??è G?× ?KY?tí/?EH,XtM6è? üA1í/?EHT× ?KY ?í/?EH,XtM6è?a6?G? ü× ??t(áKS-?64??,XtM6è? ü?t(áKS-?64? ,Xx&?T× ?"?"?"?" *! ` ` ` ` 00*ü4?,Xx&?è.Bn?× ?áí/?,Xr?tM6è?M4E￥6?ètM6<QYAE@è +bkA?z?èE? á5×<%AE@ ?6,XE ?? ---- < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 < K ? × c? O? ?g? 8 square6  c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? square6 ?!7hoz5êA?AuU,X?UqB? square6 %U,X ü)ú ?o? ü)ú]fU,XtEQ?? `4z3è ? 1:+L!"UY,X??-?è¤P?U,Xz? square6 ??? ? ??? ?]f9KEQ,X0*ü!5B ]f9KEQ,X0*ü!5B]f9KEQ,X0*ü!5B]f9KEQ,X0*ü!5B  c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? square6 ??? ? )??? ? ü)ú]f{ ü)ú]f{ square6 ??? ? ??? ?L?o  ×9KEQ L?o  ×9KEQL?o  ×9KEQL?o  ×9KEQ  c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? square6 % U,X ü)útM66(? square6 ￠?z5×<%è!¨EW ü)ú,XtM66(??*üEW ?,XM6/?9?kEW??tM62?D? square6 ??? ? ??? ?UttM6,X6(?11+6?Qè-?6 ?èUttM6,X6(?11+6?Qè-?6 ?è ú6??? square6 ??? ? )??? ?í-?6tM6Uèí-?6tM6Uè ;0a0a0a0a <!¨!¨!¨ !¨ ;G < ü)úèV ò /?/?/?/?  c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? square6 ??? ? ??? ?ík?ak _z,ì à,X$mUèpG?ík?ak _z,ì à,X$mUèpG? *üí/?b?EH,XtM6×ík?z"bk _ z,X$mUèpEY??EH#b ???{,X tM6èèG￡S?M61??0?? [ ] [ ]## σ σ σ σ =   [ ] [ ]#  σ σ=   G G  c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? c? 8 ?g ?? square6 % ?tM6U `1zU square6 l ? ? l ? ? l ? ? l ? ???? ? U,XttM6"?UEHY?n?DG2? ?ê? ?ê? ?ê? ?ê? square6l ?ê ?l ?ê ?l ?ê ?l ?ê ?? ?tM6UTYttM6T,X?? ?!7ho 1bA?*ühoè GU,X ?tttM6K Y,ì à,Xz??U"? ( ) ( ) [ ]σσ ==   !  ( ) [ ]σ  ! = ???èU,X?tM62?Da-??!7!¨? square6 ___ _  ò/?-?6t M6Uè?-1?L?9KEQ  èèè è$m,XA?*üho $m,XA?*üho σ ` ` ` ` τ?A?tM6?z áá ?èP?z"?UEH ?êè A?Y1zU?U"è.B ntM6P?z"?UEH,X ? êêê ê??_? ??_? square6 ?·??·??·??·? square6 EY? $?EY? $?EY? $?EY? $? èèè èJ*ü J*ü "+,></ tM6P?z?í tM6tM6tM6tM6 ?,X>o `-??/?? ( )  =( )   = ( ) ( ) ( )[ ] [ ]σσ  "! === ( ) [ ]σ" = square6 üC?tM6? üC?tM6? üC?tM6? üC?tM6?  " ??? ??ètM6P?z??? ?ètM6P?z????ètM6P?z????ètM6P?z??? ( ) [ ]σ"  = square6 ü{??  "??? ?,X ,X,X ,X "+,"èèè è' á6?$μC???' á6?$μC??? hoz5ê? ′!8L?Y??hoz5êA?Au {?,X??P?z " ??? ? [ ]ττ ==     "  [ ]τ "    = square6 ZSEQa?1??è ü1/? ^ ?tM6U aRP 7M6? square6 K?Nl?81A?tM6P?zK?Nl?81A?tM6P?zK?Nl?81A?tM6P?zK?Nl?81A?tM6P?z "±?á ?è?z"?UEH ?êèY 1z?U"ètM6?z"?UEH,X ?ê??_ ?V)? ----ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8 square6????X:X:X:X: U ü?t,ìf V,è,XEHGM6YY9KEQ0*üèú ü ?t? ? àê ￥*ó?? ----ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8 square6 -?-?G￡"?6???EHú?· aa !?túG￡? square6 ttM6T???&?? èèè è !??? ??,X?!7ho?,X?!7ho σ ùùù ù ! ééé é ! ! ----ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8 square6 σ aa !,X? ??DèhoGM6attM6,Xx4? G ?EH? square6 ?EH?/? σ ùùù ù ! ééé é ! !ùùù ù  G G 9θ ùùù ù !  ùùù ù ! ! 818181 81 ... . !ííí í?EHá V,èb-?0*üM6?íb?EHá V,èb-?0*üM6?íb ùùù ù !,X,X,X ,X tM6èV!7?6 ` ú6tM6èí?EH V,èb-?0 *üM6è GGM6?K?Nl? ----ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8ü ? × c? O? ?g? 8 square6 .Bn???!7ho square6 ___ _  ò/U %1+Jv ?è " èèè è "# èèè è ? "??? ??-1A?*üho?-1A?*üho σ"èèè èA?? U,X A?? U,X z? square6 ?·??·??·??·? square6 ??? ? ?Yoúd?Yoúd?Yoúd?Yoúd ? ?      '  = = %  &%   ?×=== ?×=== ? ?   !   ! square6 ??? ? ?hoúd .Bn EL=tM6 èèè è EL=&? EL=&? EL=&? EL=&? ??? ?  +L)1k %1+Jv,X !"hhh h  ("%hhh h   ,+   ±=+±= ?? ? ! !         σ σ square6 ??? ? ?? z   =<= σσ 818181 81 ? "èèè èíGM6?è???,X!7hoíGM6?è???,X!7ho %   === !!    σ ----&?B ? ×|?? O ?g? 8?B ? ×|?? O ?g? 8?B ? ×|?? O ?g? 8?B ? ×|?? O ?g? 8 square6 &??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′ square6 V ò/S ?t ? ×9KEQ (aEH ?9KEQ ,X?0?J? èW ￥*ó?aEH ?? 4? ü ?6? &??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′ square6 %ê,XYoê,XYoê,XYoê,XYo square6 9KEQ9KEQ9KEQ9KEQ Sê{*óEH ?? è ?ttM6,XEHoSê{*óEH ?? è ?ttM6,XEHoSê{*óEH ?? è ?ttM6,XEHoSê{*óEH ?? è ?ttM6,XEHo  = square6 t ?9KEQt ?9KEQt ?9KEQt ?9KEQ (Sê üSê üSê üSê ü GM6Y?èC?tM6 ,X -?????+9>oAu1k? &   (  == square6 tM6tM6tM6tM6  EL=tM6 EL=tM6 EL=tM6 EL=tM6 &??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′ square6 %ê,Xho square6 ü EL=tM6 ü EL=tM6 ü EL=tM6 ü EL=tM6 TèaEHo ,ìh,X!7ho     =σ square6 tM6tM6tM6tM6 T4? $? ?,X?,X?,X?,X ?!7ho !    =σ square6 h*ü ′t s)úè EL=tM6T??&?,X!7ho !      +=+= σσσ square6 ? ? ? ???è!7ho"?tM6P?z??è!7ho"?tM6P?z 4??ú×èè?EHáE? tM66?? &??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′??à{0@?à{ S?′ square6 EL=tM6,XT??E?4ì? EL=&?èJ!7ho   !       ±= ?? ? σ σ !     > σ ?ho !     < σ  _ho !     = σ LêLêLêLê square6 ___ _ V ò/CKG?,X?? TG￡  "# èèè è 81tU    >%1+Jvè$m,XA?*üho σ" èèè èA?? A??A??A?? U  U  ,Xz? square6 ?·??·??·??·? square6 ??? ? ? ?oúd? atU? ?oúd? atU? ?oúd? atU? ?oúd? atU  -è0JíB5è+? ò/ ?o ò? ?o ò? ?o ò? ?o ò? +G>5?/??    = = = ∑ ∑ ∑       # = # = # = # =  # &= ???èt ?o ???èt ?o ???èt ?o ???èt ?o ??? ? ??? ? StU  ￥*óGM6?èEH ? ooo o ??? ? SSS StU tU !? ￥*óEH ? _4yètU ￥*ó _? 4? ü ?6? square6 ??? ? ??? ? Yoúd YoúdYoúdYoúd 0U  ,X-? ò `EHo òV ò/? ??? EL=tM6 ??? EL=tM6 ??? EL=tM6 ??? EL=tM6 ,XotM6? #   ?= #  = square6 ??? ? ?hoAu1k `z? +L)1 %1+Jv,XDB?   ?×= !  % ?×= EL=tM6,X?E?4ì ?&? EL=&?è!8?,X _ho??è EL=tM6,X?E?4ì ?&? EL=&?è!8?,X _ho??è EL=tM6,X?E?4ì ?&? EL=&?è!8?,X _ho??è EL=tM6,X?E?4ì ?&? EL=&?è!8?,X _ho??è J4±í? %%&    =+= +=+=  !  σσσ [ ]   =< σσ U$μC?z?U"? ----&?B ?|?? O0 ?g? 8?B ?|?? O0 ?g? 8?B ?|?? O0 ?g? 8?B ?|?? O0 ?g? 8 square6 & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 #?? ? _4y??êo0*ü4?G> bEH#/?t M66?? ò/JìJ? _o,X0??è10ê ?#?9KEQ ò/JìJ? _o,X0??è10ê ?#?9KEQ ò/JìJ? _o,X0??è10ê ?#?9KEQ ò/JìJ? _o,X0??è10ê ?#?9KEQ ,X,X,X ,X 0*üè#?C±  ??? ? & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 ?oúd ?oúd ?oúd ?oúd square6 ú9KEQ G/?7?0??èí0??TYo  `oJ `oJ `oJ `oJ ùùù ù  0*ü?o0*ü?o0*ü?o0*ü?o S0??{ S0??{S0??{S0??{ *óEH ?? èoJ S0??{*óGM6 S0??{*óGM6 ?? ′!80??{*ó?4? ü ?6? square6 hoúd square6 +tM6"?-10????ttM6T,XY o?o?o?o?    == = square6 ) ?#?? ? _4y? ) ?#?? ? _4y? ) ?#?? ? _4y? ) ?#?? ? _4y? & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 81A?tM6í?EH,X??-? ! èèè èttM6 ttM6ttM6ttM6/? /?/?/?  èèè è í+-?éCK,X!7ho? ??? !!  !!              == == σ σ square6 +EHoéCK,X!7ho?     == σ square6 ttM6T??&?,X!7ho?     ! +±=+=  σσσ & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 ???ho? ???     ! # +=  σ square6 ?? _ho?     !  +?=  σ square6 ttM6T,X!7hoú×V ò/? & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 ? ?#?? ? _4y? ? ?#?? ? _4y? ? ?#?? ? _4y? ? ?#?? ? _4y? ooo o ,X0*ü,X0*ü,X0*ü,X0*ü&? &?&? &? ??? ? !èèè è ?6?1Tê? ?6?1Tê? !!  === (( & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 tM6T??&?,Xho ! !   ! ??=?=  ( σσ  ( !! ++ == ??? ? ,+  !   ! +  + !   ?+?=σ ííí í σ  !??? ? ,X? ??Dè1 σ ?tGM6? & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 σ GM6attM6,Xx4? G?EHè?EH?/? ?EHè?EH?/? =σ   =?+ !   ! +  + ! square6 ?EH ü ??? ? !EHT,XtC± !  !  !   +  +!  (?( ?==?== & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 ?EHáE?tM66???EH.Bn a ?"??!7ho ?? z? square6 ?EHao,X0*ü&?ú?!btM66?,X?{è? EH^tM6ú? ??  ` ? _ ?EH^tM6ú? ??  ` ? _ ?EH^tM6ú? ??  ` ? _ ?EH^tM6ú? ??  ` ? _ ? & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 l ? ER l ? ER l ? ER l ? ER ù ?tM66? üY,X?t?  3è'EH ?êo0*ü üA1  3YêètM6 ?{*ó?hoê ?{*ó _ho? üA1  3YêètM6 ?{*ó?hoê ?{*ó _ho? üA1  3YêètM6 ?{*ó?hoê ?{*ó _ho? üA1  3YêètM6 ?{*ó?hoê ?{*ó _ho? !  !  !   +  +  ? ?=?= ↑↓ !!  ((( square6?4§ square6 tM6 ? ?atM66(??ìY Gèaêo??′G? square61/?h*ü?6ú?$mè? & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 -?6tM6,XtM6 ? square6 Yú&? & *?? ?B J *?? ?B J *?? ?B J *?? ?B J square6 ú6tM6,XtM6 ? square6 ___ _ ? ·Jò)?+,èX )?+,èX " ,X úJv 5à?è ? ooo o  "& V ò/?A?"? square6 ??? ? ??? ? Jò)?,è!?F?úttM6T,X Jò)?,è!?F?úttM6T,XJò)?,è!?F?úttM6T,XJò)?,è!?F?úttM6T,X σ# ( σ ××× × square6 ??? ? ??? ??EHa6?Kè,XC±/???EHa6?Kè,XC±/??     square6 ?·??·??·??·? square6 %Au1k,è!?ttM6T,X???? _ho úJò)?,è!??¤?tM6??èV ò/? ( == ∑∑   & = &  ?=××= ?! +++ + %éCK,X!7ho = ( ) %% &   =×× ×=== ?     piσ &#  %   +++ + !éCK,X??!7ho,X4±í? ( ) %%     =×× ×=== ?    ! ! ! piσ ho ′t? &%%%   =+=+= σσσ# %%%   =?=?= σσσ   % %&  % %  %  @ " square6 %Au1k?EH6?Kè,XC±/? +?EH,Xn?  =?= ! !    σ JJJJ ?EH6?,XC±/??k? ( ) % %  &        =×= × ×××= × × == ? ?     !  ! ! pi pi   % %&  ---- S?]Q ?? 8 S?]Q ?? 8 S?]Q ?? 8 S?]Q ?? 8 square6 1/?T *ü,X ? g 4 ? g 4 ? g 4 ? g 4?=???J?J]?J?J]?K1??=???J?J]?J?J]?K1??=???J?J]?J?J]?K1??=???J?J]?J?J]?K1? square6? ? g 4? ? g 4? ? g 4? ? g 4??S1???S1???S1???S1? square6 +bXê ü6(y?,Xhoú×\áèL?102?.B,X )úA?údè1/?G?*ür*üAu1k?A?hoú× ??_èkhoAu1k@?×a BrP`#k. #hoè ?0?A?Au?í? ---- S?]Q ?? 8 S?]Q ?? 8 S?]Q ?? 8 S?]Q ?? 8 square6 ? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8 square6 6(yêèJ ?o(M&??6(yêèJ ?o(M&??6(yêèJ ?o(M&??6(yêèJ ?o(M&?? square6 >? square6 ? _? _? _? _ V ò/J?ySèJ?J]6(yê ? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8 square6 * * * *? ü6(yê?{ ???,ì1è ? ?,ì ?è0*ü4?,ìC±\E￥è V,èb6(? ?,ì ?è0*ü4?,ìC±\E￥è V,èb6(? ?,ì ?è0*ü4?,ìC±\E￥è V,èb6(? ?,ì ?è0*ü4?,ìC±\E￥è V,èb6( yêEH4?,Xêo0*üè"?>?M6 ￥*óJíyêEH4?,Xêo0*üè"?>?M6 ￥*óJíyêEH4?,Xêo0*üè"?>?M6 ￥*óJíyêEH4?,Xêo0*üè"?>?M6 ￥*óJí |?|?|?|? square6 >?,Xr*üAu1k?A??ho ü>? M6T ?ú×èV ò */?/?/?/?   =τ >?M6M6/?×  0*ü ü>?M6T,X>o? ? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8 square6 >?z5ê? [ ]ττ ≤=  τ ,6(yê,XA?*üho?6(yê,XA?*üho?6(yê,XA?*üho?6(yê,XA?*üho? [ ]    ττ = τ   B6(yêr(=ê?3>?. #rP`# ??? ? 5à"k× ]<2?D? íJv$è?8Y τ"+%%&,σ??? ? JèJèJèJè σ? A?*üho? ? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8 square6 í￥ í￥ í￥ í￥? 6(yêa>6(yê,X ,ìfy?oM6TF?><M6 ? _? square6 ? _,Xr*üAu1k?A?? _? _,Xr*üAu1k?A?? _? _,Xr*üAu1k?A?? _? _,Xr*üAu1k?A?? _ ho ü? _M6T ?ú×? square6 ? _z5ê ?m?? [ ]* *  *   σσ ≤=  ? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8 [ ]* *  *   σσ ≤=  square4 * ? _M6M6/?è?? _y?oM6 ü V,èb? _o? _M6M6/?è?? _y?oM6 ü V,èb? _o? _M6M6/?è?? _y?oM6 ü V,èb? _o? _M6M6/?è?? _y?oM6 ü V,èb? _o ? ?,XiEM6/?èV ò /è/è/è/è *" δ èèè è J?J],èXè δ6(yS nz× square4 6(yêT,X? _o× square4 σ*? _A?*üho? square4 íJv$è?8Y σ*"+%%,σ square4 hA1??è? _,ìf,Xè81?t,ìfy?o,XXê *ü,X$má àèíhíEW?,XXêEˉ> ? _z? ? ? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8? -0?B ?? 8 square6c *c *c *c *? 6(yêTY?t>?M6?V ò/? square6 ___ _ &A?? ò/yJ?yê,Xz??-1JvS `J? J],X$m,ì àèJA?*ü!7hoJ],X$m,ì àèJA?*ü!7hoJ],X$m,ì àèJA?*ü!7hoJ],X$m,ì àèJA?*ü!7ho σ" èèè èA?*ü? A?*ü?A?*ü?A?*ü? ho τ" èèè èA?*ü? _ho A?*ü? _ho σ*"èèè èJ? J?J? J? yê ??o "# ??? ? square6 ?·?_J?y4§X,X. #??YY/? ??·?_J?y4§X,X. #??YY/? ??·?_J?y4§X,X. #??YY/? ??·?_J?y4§X,X. #??YY/? ?6?? 6??6??6?? square6 ??? ? ?J?J]"?JttM6>>?× square6 ??? ? ?J?J]êJvS>? _ #×?J?J]êJvS>? _ #×?J?J]êJvS>? _ #×?J?J]êJvS>? _ #× square6 ??? ? ?JvS>??? square6 ±A?A1y,X]<è?NOíTE?Yt?M6Eˉ> z ? ?? ?? ?? ? square6 ??? ? ?J?J]>?z? square6 ′J?J]í/?ú×bSEH4?è èJ?J],èX,ì1è ?A? !￡tJ?J]S ?,ì1,X>oè V ò )/!￡tJ?J] Y? t>?M6è!￡t>?M6T ,X>o    =      τ piτ <===    J?J]$μC?>?z5ê square6 ??? ? ?J?J] ?JvS,X? _z ? ? ? ? square6 ′J?J]aJvS$m,ì àè ′J?J]aJvS$m,ì àè ′J?J]aJvS$m,ì àè ′J?J]aJvS$m,ì àè ??EY?Xê? J? _ ??EY?Xê? J? _ ??EY?Xê? J? _ ??EY?Xê? J? _ z?V ò/!￡tJ]aS (,X? _o      =   * *  *    σ δσ <=== J?J]aJvS $μC?? _z5ê square6 ??? ? ?JvSk?z? square6 T???S,X ?oa?(? ?,ì àè ?L?? J??,ì àè ?L?? J??,ì àè ?L?? J??,ì àè ?L?? J? +?)? aTSúdèJ ?o +?)? aTSúdèJ ?o +?)? aTSúdèJ ?o +?)? aTSúdèJ ?o ò ?EHo òV ò )??? ? /? 5×<%EHo ?tM6??è hí  ? ? ? ? tM6Eˉ> ? ? ,+,+  σδσ <=?=? % ,+,+   σδσ <=?=?   JvS$μC?? z5ê?4DTúdèHtyy]<,X?