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7H,E@
+$)#$+)*2)*2#($$$)+($&)
τσ τ τ= − 7H,@
$(
"
"
ττ =
=
=
7H,"@
$$<#$##($$*#+122)$$$##(4+(9
E
σ
= 7H,F@
*2<$*+2*$2#21$2*(*2+#(*92)P*#+122*)$
#+ $<#$#,+$ ) $#$'2$h # $
+)*2)*2#($$)#(*2#+#'($*)**2*#2$(2##
$(2
• ($* W $# T * +<2<$ #$ $ #+ #+2**2 #* (* +2*
+$ ) # ($$ * *$* (*+9( * *&*8, $* #$2
1+92i($$*#2*+(211+9(1$1$#2<,
=2<H,I')#*2<$')$2*))*+*
:.2I
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G!
• $(*2$#+#$#**)+2:$#+/(]*3:3#2e
*+(22+ # ($$ 92 * $#2 )$ 21+( *2<212($2 (*
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$28:)(*2$,
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#2(,')**2$4+$29#$*(($**#+)$
7 / @ 7 @ 7 @
$ $
$
- τ α δ τ=
= − 7H,G@
Wα$7@T$#+*2<$)2#()'$##$#$%,*(112(2*α$7@
* )$* 2+* 7H, G@ 9 * #211+* ()*$* # -7 τ@ *+$2** #
$282#+)#$($12<(2#***,
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!!
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:.'+* +05)' 5
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(*
D θ
λ= 7H,!@
$<θ*$+$2:($*#($$(8 2)+2*2#*$<*#*#211+* $%*92
)(4$<#$*)*()#*#211+*%*2$*,
$$$'2$#D+
$'
D
λ= 7H,@
)##+122$$##1+9(+D#$)*#*#*Q*
$' $'N OD " " + D D D D= − + 7H, @
$2$2 # $ 1+9( # $ )* ) P $**22+ : #$2 #
1+9(92$<2**2<$*2)$(#*+($*(*$+*,$()$$2*#$
1+9( )* D" # #+($$< D ) #2' $))+(2 2(2#( # 11
)),
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+$2***#2K1$#2<,
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:$#+)#$$9*)$$8*#($$*)$292$2$*,
(+$2###!,E/*#+)$
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G
Dπ
= 7H,H@
:.2I
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G
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%
% 2-
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)) 2#+)#$ # $ *+(22+ # ($$ $<2 * $ $)2#2+ #
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*)+2:$$<#$##*2<$$2*)*#(4+(*21+2:$
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$#$*2*+(211+9(*)+***$1
7 @ α η= + 7H,I@
WE*2<$**2*2<$$*2*,
:.2I
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GI
#2*(22$2 * 1$2 * #* ** * '2*( # 2< #
#2(++()
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)) # *2<$ Q *2 $ #2*22 # $2<4/ $( )4$*
21++)$2/#$1(2##*2+#)$22+*
7 @ ')7 @
,
D
σ σ−= 7H,E@
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• *92&$ 2<##2( + +()/ $&# $
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$$#2*22#2(##*2+#)$22+
!
7 @7 @ ')7 @ 7 @
,
) )D +
σ σ σ− += 7H,@
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++(),
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1
!
7 / @ 7 @ 7 @
$ $
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- τ α δ τ−
=
= − 7H,"@
* #211+* $%* +$ 2#+)#$*/ 2 * #P # $ #2*22 #* $2$*
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)+*( # 2< # #2( 7 2313*2<4@/ ')**2 7H, G@ * )+*
(*2
7 / @ 7 @ 7 @ 7 @
$ $
$
- τ αδ τ α δ τ−
=
= + − 7H,F@
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#)*#)4+8#$%2)*($$(+2*$+$2**:)2+(4,
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^ 7 @
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5
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Z
Z
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=+ 7H, @
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*#211+*+4#*2#2*#*2$29
α α δα= + 7H, @
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:.'+* +05)' 5
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9 (6 9
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1 1 1 1
1 1 1
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7H,H@
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#+122)$
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= ≤ ≤ − ≤ ≤ − 7H,E @
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