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a@AZLZbD 001!#!" "! 4!" a)@ ASS8b a#@ ALLZb "#,!!" '1(! (! 0 ##!!#""(1-""!!#!#!'!B" 0(!"!"!#% # c[d% E4DDAF d[! 1"!#!!(!00(!#'!0 ##!!#D +", -#! "!B 41(!0 ##!!#G # '! -"#1'!"" 0(!" "'!>'1!(!1(!@Y'!!#) ay'!@ AZL=b## 14!!0 ##!!#1##'1!'#'!>!( "( 4!'!(#(#" #!G" 0(! 1!!'!(#(#D!00!#@!"" 0(!" 41!"'"(#(# 1"!#!#! -"#1( "( 4!'#"!'!"" 0(!"("##!,1 #)!! '!(#(#D!0 ##!!#!#!'!B" 0(!"( "( 4!"'#'(0!#!,!! (!"##"#4!!#!( #! (# )# 11!#!'!(4!(#(#!#! -"#1" #-"#!"D >!"# " 4! AZTLb "! '+! &"4! '>#! (#,!('!"" 1 #1"'"!4!!# #(+!!#!1,'!(!! ;!'! #!'1",!'0 ##!!#'>1"#+!M-""#>"!" 0(! -'!E%-!AFD #'1",!!"#'!(#!!#!1!G>! 1!!'!(#(#D 8Z

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231 +.B,!(W π = EξF = EL=? AC ξ 8A? ξ F W A ξ A C=T 4DDT ("14!(!@ #! 1 #! G " 0(! ' &+! EζGTF '"! ('! '! (!##! B#!#I#!((1 W αi µ 2 < θeξf = 8EξF 4DDZ β π 2,!(α>cAαW0(#! '! ##'0B#! 4!#,! "#" 0(!'!>1"#+!D,!(W!. A ξ AE4DDACF 8 = 8 { ξ + A ( SA+ A ξ C ξ + T ξ AL ξ ) ξ A ( SA A ξ C ξ T ξ AL ξ )} = π 8EξF = AT!. ξ> A E4DDAAF 8 { ξ + A ( SA+ A ξ C ξ + T ξ AL ξ )} = π 8EξF = AT "@!"# " "")!'>!"#! #! 1 #!B!'!" 0(!'!>1"#+!!'#!!! # D ("'+! 11!# '! " 0(! '! >1"#+!! 0 ##!!#,!(" +!!-""!!#G!,#!""!'1!@ "(!#11!#,#(&(! '!#! 1 #!'1( #" %-!A?AD =C_" 8A?_" AC_" AC?_" 8!.!#2$ /) $9! 1E:!#"">! (!, 4!" -! '!>!'!(#(#@#! 1 #!-!#! '!!# J"4>G ##!'! B E%-! A?F@!"#!@(!##! N!!,# "! 0 ##!!# >'!#!#"!!#,!G,!!(#(#,!(> )#D!(!0#@ 8A

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282 +. 6 8!JJ# * 9a! : 9 : 9 :B9 : < #,!!#G,! '1#! 1!!""'!-##!E"# 8CD `)!8F'! (!##!I!1! -!@ X#(!!#4!"(1 1#!!!#'!!"! >1! -! '>'1!(!!#'>'1"D(,!#'('>#"!!"'+!"(!##"1"'! 5$EP&%&'Y&%&%FD 4##1EξFE$&&=F X#(!# +"" 1!!GAD#1!5"!)!'( "' #1!(('!(!"1! -!"'10!" >14#&5D 8 EE# * 9a! : 9 : 9 :B9 :*C>;!##!#1!@d!"'10 #""# "!"!( #!E$&&-F@!!#'>)#! '!" - '! "'>1! -!"> '%!"##4!E( TF)!( "0)!"@D!DA@?Z!#C@88D! M>!#! M>!"!(#,!!#D!##! 1! -! X#'!,!(!! 0(# - #4!'!,#!""!'>'!##D>-!##'#,'>'1!(!,!((! "!)! " '001!!#!!" '!B #1 BD #!0"@! M> ("!,!! 1! -! '>'1!(!)!" 1!!G(!!'M>D!##!'001!(!"!)!!1!B 1#1" T

283 +. 14!(!'1!!##! 1 #! )#!@!"# "'!#4!"E%-!AL8FD > #δ 8 E!#(B OE!BP!"( (#1 "#4!" &"4!"'!>#! 0(!!,!#I#!'1#! 1!"!1,#!( (#+!,"4!B'!(!!(D0"#>& #+"!4!" 0(!'!>1"#+!@(!"(R!,!#"!"(1#"! #""! '!,"("#1EηF@0 (!'!"1 # X# "(!!0(#'! (!'!,#!""!'>'!##E$&&''FD 8 E # 98 : 9 :B9 : # +")!( 1# ""#" %-!C!#!E8 F!#E( T&5 F"!!#'! ((!4!>#! 0(!'!(#(#!###G0#">""! G0'!'!,"("#1EηFD!" #! "(!a$!@azsba$-"@cccb# 1(1'!!##1!#!!0!(!'! #,"4!"!'!#1 B,"(1"#4!"(!!"1"#+!"D!"0 (!"'>'1!(!!#!)!!#(!""0!1"#+!"#)!'!( (#+! (!!#,"4!BD ( "#!M,"4!"!>!B 1#1","(1"#4!"!"#-11!!#!B 1! T8

284 +. 6!'!'!! #!E##F(!!#!, 0 (!'>'1!(!">!B!(!!0(#'!(!##!( "#!,"4!"!W ief Ri = Ri [ #δ] EF = iief 4DDAL 8 d!"#!""!@!"#!b "#'#,!!"# (!'!CD!#R#!"#! ("##!'1!'#'!"('#"'!-""!!#D!"#1 B4"#1!""!#@!"('#"'!-""!!##"1!""#"!"D!# "!B!! #'!"'!B 0 (!"(!W ( 8) iii i" i iiiii = ( 8) " iii ii i i i" i = 8IQ = DA? 4DDAS! #!"# ((1,!(!" '1!" ""!" ' )! = d!" ( (#1 "#4!","(1"#4!"#1#11,1!"G#! 1 #!)#! 0 14!(!'!8NE$ >E$F ;G)%IQ #δ ;G)%IQ E`F! #N 3!! #N! A8DL CDA E8`ACF CD=L B ASD CDA E?A`TF CD?8 2 '#< ) 9 BP: )B # '!"0 (!"! 1"!#1!"" %-!AZ?@(!I! #!#I#!((1 (4!,#!""!'>'!##E%-!C8FD 8 E%# 98 : B 098 : T=

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cC`%-!C=FD&#4!!#@"!""0!"# " "1!!# 1"#4! E0ν T&5F!# '>1 ""! "!0!@!" (# #!" "! '10""!#"!!"14#"",#!")"1!" #1!'!! #NW ( ) ( σ ) = ( A ) σaa = + = ν Q # 4DDAT + C + = C Q 8 ( ) = 8 ( ) + Q σ88 = 4DDAZ + C + Q T?

286 +. 6 d (!"#!""'!(#(# 0 (!!E8 F!#!"#! &'!>!'! (#(#D!##!!'!(#(#!"# 0(#'#! " EF!#!#">!B! (!"#E$& &%TFW = EF = (!# ε U ν = σ δ U + ( A+ ν) σ U 4DDC^A # '#!"! '!"'10 #"Eε U 0$&&%'F@!( '!",#!""!"'!'10 #!# I#!)#! '1,#E _ #FD(!#!'(#(#@(!!"("#'10!"!"14#" ",#!"W ε EF g AA εaa = = = ε + = C@ S = C A π ( ν A) ( A 4DD g ε88ef ( A ε 88 = = ] C@ S C 4DD8 = = π (!#!'(#(#E+GQGTF@!"(# #!"EC )) Gσ )) Gσ ''G%% F@'10 #"E )) Gε )) Gε ''G%% F!#,#!""!"'!'10 #a ))![Gε Z ))Gε Z ''G%%b,!#(!! 1"!#1!"" %-! C?D AC[_" 8C[_" LC[_" ACC[_" AC[_" 8C[_" LC[_" ACC[_" ACC[_" LC[_" 8C[_" AC[_" EF E)F E(F 8 E.# 9σ %% :9: 9ε %% :9: 9ε F %%: 9: 9: 9 :B!",#!""!"'!'10 #B!"@"###!#!" "4!0 (!!!"#B! E8 G7T/FDB 1!#!!#@(!##!0 (!!!"###!#!!#! "'10(# '!,#!""! '>'!## E8 7T/ ( 'T! %&%0 ( )T! T&=0 ( 7T! T&) ( 'TT! T&%FD!",#!""!" '! '10 #" B!" '1#! 1!"!" 14#" 1(1'!#!"#'(1#11,1!" (!"'001!#"#! "E%-!C?(0F >-!##'>!'1('!'!( ('#G!-!##" 1!!G!'1('!'!,#!""!'!'10 #4!>!#" "! #!!G0 14!(!'!"(##D #!0"@!" '!"'!- '!!"#!#( )!"E%-!C?(FD TL

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