chen 2015

!!!"#!"#$$ % & ’ ( ) * %&’(!! )&("#$ *+,-+,-$ .&/012’ &3 4567897 :;29581< -(=>,-! " # $ !!!"! ! ! "! !! " ! ! ! " ! % & !"#$%!!"#$%& ’())%*+ ,(-.#"/012#/234$ &’()!,(--# 567+%897:%) 5"*8$;<= >! " > % !>& % ’>( ?%" !/$ *+,-. /0123 4 5 62 & ’. / 78 9:7;<=7& >:7?012@ABC"D BEF2G="8HI2& <=7JKL012 MN56"8OHI2& P!/$QRSHTUV" W7 8*+./01XYZW[\2./7" ]^&8*+./01XY]2[\2./7" _(8*+./01XY‘2[\2./7& a bcdef V28 "Xg 2ZW’]; ‘ f 28 ./0123456"hO8./01’i& jkl./72m7RSno"lp3q> :7!r"W7’]^st7u$"3,012aq 72vI!wx\$yz8{p| 2 01 2 aq 72x\!wvI$X}~2"a49:7RS €‚7!@"7#9*A9> B6%7:(:C$& ƒh"O8XB9 :7„8‚2"…r"_8O‚29:7& †ƒ"lp< =7 ‡ ˆ "‰ X g ‚ w O ‚& Šo‹./ŒŽ"l./72‚sO ‚2+‘e’ŠT“”(•2O–( /$—˜7™š.6) D$OC›lO˜œ2+) 1$Šl‚œ2+BžIŸCp01 2 ¡& aqO–O¢p£¤l./£’62/¥& ’¦§¨|©ªŒŽ  Vo 2 Ÿ+ ” -( • 2«¬"­®VEF2¯°±²& " ’()*+,-,-./³ŠDB[4./56& ./£´ jµ¶./7‡*+./³Š23q./56& P/ªŸ·"‰ªRS¶[\-./7‡*+, -./³Š"RS¸Ot—¹2XB./56„ *+V‡& º»"./7Otu¼p./³Š& ½¾./7 O8. / ³ Š "¿ 8 "R S ¶ . /7X *+2. /56 8 ¼ R S l. / ³Š 2 ÀÁÂ0Š,~2& ÃLl3q./ÄÅBÀÁ 2/¥"RSjµ§>:7ÆÇÃȳ.,ÉH TʒsËW& ̃RSHT—>:7ÆÇó."¿RS ÍOt§¹SÎÏó.w.6& .68Ðђ Š2"h./78ÒSÃL*+.623q./ 56hÓÔV‡2& ƒh"Šo‹2./ŒŽ "RSHTUÕ,q—‚7™š.62+& oÖ×r“( =?, -./01%2

Ø " Ù Ú ÛEFGH I)G7@J"KLML#/2NOP2 t 77ÜÝ/ª"ÞWß2à]áâ8Tãät7

3456!7 89:; <=>? @=>,!+ABCDEF"GH%& EIJK LMCD !EN OP ( J QR #$@A>B#%

JC DSTM U&

.,/01’23*’2

!"#

åæçèéêë쏣"åæ èé

1/D31/

4567!VW X’Y’,$B=+ Z’: ;[\] ’^_=‘’ab’cd &

8 9!./(e/ (fghijklm/ & lm/n op/h qop/ Mr& s%&

=>tu’vswx%&/JophqopJyz{|& 78}~€a‚yz {|J ƒ„&

:;<!op)lm/)… †/

=>?@A!CB!!(# BCDEF!D !!!!!!!BGHA!,>>!EBF"G$*+F-%-E+++FE"

/

!"#$%% &"$’() ! " # $ % & ’%%()’’()* *$+,-* ."/012# "3 4567897 :;295<1= +,-*+’** !"#$%&%&’()*+,-./0!12 34560789:!!;<9:=" >?!-. /@ABCD!E9:=@FG-./0%2A B:" ?E!D% H AB I JK L !M N9 : =O PQ=1RAST!"#_{#$%&QUVW@X%22} 346Y09:=Z[\!]^"!\Q\9: ="!!!!"_‘ab:’ 1H9:=cdef" Q=($%&’&()’ * ghiGjkg@lm0!@n"Q=09 :op39qrs0tuop’ Cvh!-.( )@%RAS!#wx9:dFG-.()@3 y0’ Q=@-.()0zUZ[u6!>?!1 2zUZ[u63@9:=’ Q={|}x~T 9:g€0AB:(‚!ƒ:+„ƒ:…†‡ ˆ)dFG’ n ‰ !Š ‹ Œ 9  ,Q = W @ 9 : = ! W @ !!*!EŽ,%2Q=09:"!!*’ +$+ ,-./0!1 D‘I’L!!)# “-+-”…-”:1•2 –f0—x@˜™š\’ I’Lx,-*12›d ,iœžŸ ¡¢gc£¤0¥S*!4cd¦ §¨T,-”*…,-”:*1©2›!ª«¬#,-”0­®;-”:*’ >?! -”:@%2AB :’ ¯°!- ”W±9« -1 R ¥S T !² W@ !-”³-@´µ›’ ?E!Š‹¶!‘I ’· ,-”*%›¸ ¹T­R ºµ #D,» ? ¼0 -”±¤©R*0i GL!N,-”*OP % R A S! n"‚½s«0@%R¥S (-0¾–)0 ¿ !s±¤- 1R¥S -‚ ½s« 0 @ % 2 AB : (-”:0¾ –)0¿!s Ž¤À+Á … • R’ D,-”ÃÄÅÆ*0iGL!N,-”*¦O P%2AB:! n"ÃÄ@“AB:d0!E 3@“A Sd0-D “Ç-” 0 Å µ L !¦N -”OPÈ -É’ Êj!I’ P Ë% Ì ÍN ,-”*OPAS!%ÌͦNsOPAB:!CSh @“AB:…skFG0AS0™Î’ ¬1RlmiG@¤ÏÐÑn0’ DÏÐ h!ÒÓÔ¬0ÕÖׅJØ×ÙÚaÛ(*+(,-./( 01-(23/(45678.96:;)ÜN-”OPAS!ªÝ¬ T ,- Þ * (+3+<’1/<-3 =3>/?)\ ß à … á â S ã ä (&(+@=3>/? .&?+3)’ 1DOå@%æçè’ ?E! Déd!-Œ@AS!E@AS0%R¥S’ Š‹êë!ì-”³-”:P"´%2ßà 0©2Œ´–f!ís‹î@AB:!ïEN,-”ÃÄÅÆ*Bð",-”:ÃÄÅÆ*’ +$% ,2.30!1 .”²@%2ÃÄ:’ 12AB:ñaòó (AB CB D-EF+33!9G)9.9G6:)ôWݬ !Oå

Ns;<.:(-.&>(’ &= .-H(+’/I.)#,.É0% 2õ0.:%ňö÷%2õ0.:!øùúû ü’ ý%þÿ!!%2.É0Ê.:(r"…) "Â’ *!J# Ud!¤T.”12AB:!Š‹W4g #ŵ-$%‡%&ŵ.$%‡( ! $%&)’ ? E!’‹Xö( Œ) *È+. ” 0 , =(*Ë  .áõ=)!ªm-".”W@1RAS!nEN .”12.}0AB:/0T’ 1&!ÑU4g I·LØ 10.$% ‡ 1 2A B :W 2 3) æ Ø45IT’ ª6!DæØI’L’‹î789 .:Ž%‡ ! ?c5;< ….= % ‡ d ŵ ! —> ?5T sUdŽ¤0@A B µ!["%2˜CD0AB:’ DLØABI’ L!DEØ1ðF"GŒ89.H%‡å²¬ ŒIJ0iG’ K‚!¤I’@1&ðF0!)# #,³ -$%‡û“Ž!Š‹U4gNFG.$%L0 AB:;<.$%‡’ øÏÐh.$%‡MŸx diœ÷%2AB:!n‰ABØLx.:Ž% ‡(.-H(+’/< /(?><’/&()dFG.$0%L’ *,ø @!KõŒ9áwND!nEŒ49O:KõPQ0 æ8!²WŒ49RÅ.:Ž%‡0æ8T’ *C vh!Š‹˜STU¬Kõ D.VLP)0Q’ Š‹±}W%;XY0 . Z0 % 2õ 3 92 U 0.VL!W4gU¬.õD[P\0.VQ’ ý.}0@!W.”³-”1©2AB:]^c! _ö.0‘a³-0‘abtû´(cd.0e fÅÆ)!ª6-V….V0Bg4g%@h‘ÿ ¶ij5’ !L#_{ü d!‚½k¤.”ßà!Š‹W} Œ9Å:ÿFGlm.É!.V%‡Wn[T% 2˜op0AB:T’ Š‹êë!DLØABI’L89.”…. V%‡1©2AB:!D89.V%‡c589 .:Ž%‡!qØ1rs.V%‡….:Ž%‡ î@xdFG.V%L0’ ! !"#$%&’( tu’ ‹N ¤ H v w : J [ AS 0 x} Ñ n@n"1Hvw:@ÃÄ0’ûü!J¶y% vw:ŒÃÄå!’‹D/0N1%vw:J[ AS0lmzà0´å!²/0T12vw:’F M B B

!!!"#!"#$$ % & ’ ( ) * %&’(!! )&("#$ *+,-+,-$ .&/012’ &3 4567897 :;29581< -(=>,-!"#$% &’()* + , -. / &0 1 23 4! 5!"67"89:;!"&$%&’()<= ">##$%&’(#$% ?@"89ABCDEFG(! 8 9H/IJ"">5K,"L-MNOPQEF! RS",TUVWXY"">Z[EF#! \N] ^_&VWZ‘ab"! 89cV"‘adJ" #ef"ghbi[jkl#"! m9IJ"no pqrst &’ugv w x yz { |i } &~ "€[jgZu&’>! ‚ƒ"„…:"†d Z’>&&‡ˆ’‰q"Š‹Œ:Ž†dZ\m no~% ">RZ‘’#% RS"895“ I"># H@:Žd J ; !" # U% # ’( ).”•(–—˜™š…% ›œJž"89Ÿ R[ z ¡”¢g) £ & ’( ) ") d J ; !"&U%&’()% g)£’()");!& [Z¤¥’ u¦"§‚ ¨ " S© ’ uu ª «¬ &2>(­"&$%&2>$"SZ¤¥’u>) ¨¬§®2«¬#2>(­pg),¯#2>$% °ƒ†}"">#‘’Z°±89:Ž†–Z ’(²5…%³´:">µµ†dZ”¢’()" ¡.¢’()};!"#U%Z¶·&% ¸9j ‰¹W"³´ ">.¢’ () º »¼ )ˆ ) ½g )”/˜ZEF&"@89jg[¾™šŽ…% ™š"> . ” ’ () ¿ ’( L À} & Á Zì&%]jÄ&Z"@89ÅÆÇG(&• (2˜“Iȅ% ÉÊËMÌÆÇ()(#&%$* +!&,$’-.$-( /$’,&0"!123*!"45$ 5 Í Î " Ï Ð Ñ @ { i…ÆÇG(+"ÏKhb&ˆÒ[Z°±"> &ÓÔ"SZ°±">ÕÖ×’u›Ø×’u& ÙÚ%m:ÛÜÏpÝÞßà% mIJ"¸9j‰  á:"#âÒ½ãä&ˆÒCå,ãä&ˆ Òæ籎&Öè½Ý)""&ˆÒéæç±" ÏK¡& ">&)½ êë " > & ’ uì í &× èî".”×èîj‰ïJ">&ðñÖè% ò R"³´ ¸9[:" >†dZ” ó’ > "S : Ž †dZ”¢’()"³´¸9ôI">Z”¢[ EF&õö)"÷ø"ÆÇG(Zùú¶·&%  û89üý./þÿÆÇG(+m°‘’&!" ic#$i…¶·&%&% ™š"> . ” ’ () ¿ ’( ’ MÀ } &Á ˜Zì&% 5V(’()*N"”+,"-, .*†–Z ;!"&’()"S Ŏ ; !J &p !C ¯& ’ () ’(!X/ ” ¢ 0 ! 1 2 K 3 O &4!12&56$,7”+,"-,Õ[EF& 8è}X!p*,¯&9:"SÅ.”9:;! J&*«;G(’% 637 ”+,"¸9<=¡”ó>?&+@Å*) ¿NLb% *j‰A¹WJBC5’uN©¸9 D›"&÷ó&~’"Žj‰5×î&EˆðÕ Ö×’uF›Ø×’u"˜j‰5"G&Eˆð ÕØ×’uF›Ö×’u% 7”+,"¸9<=¡&*[EFH:’}I J&*«;G(’% ”¢EF&’()OK,L +,&M2+ŽN[¾hb"˜[¾ÓO% *5E F2PQ%…&[¾hb’.”M2% ‚ƒ"¸9 j‰Å&*[E FH:’X!J+*¾ hb "R [ ¾ÓO% S*«;G("µSi…Ž&¾hb’& ”,"-,SiŽ&[¾ÓO’&”,% ! !"#$%&’()* 3±T”UVW&X”¢õö)!"Y, ¯U@ -!"-# $ %!&!! (5$

@N%!Z!&F"!!Z5KÍÎ &Z[W! &

hbÑ(§ÓOÑ$% @(5$X Y "UVW&! & ¨\Ñ°L¢jg&G‚]^"”Z_-UV‘ rFa§Fi&!&F%!" bZUV W!&h

bѧÓOÑ!!% ³´!!c±8"é!ZEF&% °ƒ¸9de"!Z“EF"fUVw¯"Z!g h&2>% R!Z“EF".Z_-3!i( j)klde&% 5V(’()*N"3[H’()&EFH :&Xm+@Œ[CH% n³+ ÏogEF H:+&5 p, q Ò§ r Ò = s &’u UVW"ˆgptgj ‰ u C v\ "S w &ÏogPQ[¨% ’697 g)EFH:+&g)N[¾xyhb"˜[ ¾xyÓÂ"ŽpgՔóz@v\J7”óz @"§ {Ք¢’uv|› } &’ u "S 5v \ §v|&-MN"g)&w)PQ[¨% ’697 »¼EFH:+&»¼N[¾~b"˜[¾Ó O"ŽpgՔ¢’uv|› 7” ¢ ’u "§ { Õ’u&”€v|›7”€,5v|-MN" »¼&w)PQ[¨% ’647 ˆ)EFH:+&³´”¢UV[qÒ"§ {KqÒ&‚)½J8".¢UV&wˆ)P Q[¨% ’657 ƒ!P!’()&EFH: (-.,?/$ 4 : :

!"#$%% &"$’() ! " # $ % & ’%%()’’()* *$+,-* ."/012# "3 4567897 :;295<1= +,-*+’** !,-’%.!! " # "$ %& ’ "( )! * +, - # . / 0 1 2 ! 3456789:; !<= #>"?@A34BCDE234BC!",-#F G/012!345HI.6JK<= #>"A 234BCDLM34BC!$ NO"34PQ3 4RSGT012UV!"WXRS:;UV!% GT012!34PX34"Y:;Z8%[\T :;!\T342]6#P^_!5"GB.‘! :;!aT012^_#P]6!7bc!d2$ ef"$%g h"S3 4 B C ! "i j kl mnop!qr& A234BC&A2sXtuv"wXtxy$ LM34BC&LMsXtuv"wXtxy$ E234BC&E2sXtuv"wXtxy$ S9?@A" zO{|RGTX34!2"z stuv"wtxy$[}",\G<=n"zR3 4!"a~€,‚ƒ„nR34!G…$  R"†‡ˆ‰ŠQ342,\G<=n!34‹ " tŒz%Ž|!X34‹$ ! ! " Ž  ‘ ! G / ’ “ R ” + Y • – !"#$%"&’( )$""*+,,’-&.(+$/ 01(/&2D—˜)+,3 45 67.(3’ 8+"9 :"7,1 ;.(*&<™š + !› œ ‘  ž ! $ , f"”+Ÿ %¡¢£¤!¥¦$ #$ %&! >-? .$ @$ A<BB7$ C1 D5; ;E/<F8B08/G "3 H;D;0"=;1;"/7 7/B! 7D219;7$ :0217$ I"11$ J92K$ LLLM-N(*O$ >+?/0 1 "2$3 4 5 67 8 9 : ; < # = > #! "$? @ %P*%>Q?$AB&CD#E FGH"+,-,$ >%?/0 1 "2$3 4 5 67 8 9 : ; < # = > #! "$? @ %P-%>Q?$AB&CD#E FGH"+,-,$ >’? .$ I$ Q2RS;FF$ :0;2D<7; "1 TF;9D0<9<D6 21K Q2=1;D<7G$ U"F/G; +V -N(%$ >*?IJK"LMN$OP$>Q?$AB&52#EFGH"-)N’$ >W?/ 0 1 "2$3 4 5 6 7 8 9 : ; < # = > #! "$? @%P%%>Q?$AB &CD#EFGH"+,,($ >(?/0 1 "2$3 4 5 67 8 9 : ; < # = > #! "$Q @ +%>Q?$AB&CD#E FGH"+,-,$ !RSTU VWX’ §:d(¨T012!©2"ª«¬­S)®¯ °2!(D)±²³´°2!=(!©2$ µ¶!­!= !·¸"ª¹ž7Oºº»$ $%&’"· T¼ ½ ¾¿ À .Á  "à ÄÅ “,OºD1œ|.XcÆÅ"(ǁmÈɚ v!ÊËD¼½"’Ì[ˆ6mkl$ " ’()*+, !,¢ÍΑ"ÏlІÑÒ!ÓÔÕÖ× Ø"mÙڈۻ×Ø,ÜÝqŸ|ÞE!ß B‹$ ",¢ÍΑ"Ïlà?!áâAãáO º†ä"måæˆçè×Ø,®é“5êëì ê!í§î$ >ïà?.)ðñò(âA"óïôõ$ ! -./0 ,01¼½|ö÷švEàOº!Íø"X ù,9úûšv!šüýþ"ôŶ!R÷šv ÿºD!"šü†ä"šüDÿt01š!#Ä q$$ $%%&‘š01(šj’())*+1> Oºº»(! q $,¬-š v !ò . ‘"a/ ¶ ,¼½(š‘Q0‰¬"/¶1234OºÃÄ #Pº»!56,,!(š78"WOºq9!: ;HR<1(š78!8=$ >?@A‘š01Oº!<=.B"$%C RmD‡Ïlʎ!EFG)oHOº($ $% I­)oHO º (wAJK Çv L ˆ ¹ ž( š J M"CA÷ švNšü‘& - ¥ O &P QZ R Q,"oH!STUVWXYí!01ZC"î& $%[ÃÄ$

#1 %&&

>-?/0 1 "2$3 4 5 67 8 9 : ; < # = > #! "$Q @

Y%>Q?$A B&C D#EF GH"+,,W$

>+?I J K "Z [ \$] ^ _ ! " # 8$‘ $>Q?$A B &5 2

#E FGH"+,,’$

!RSTU Iab’ ?