?"dsD !9 ?"dsD !9 5 5 ? ? D D y y ° ° ?"d 7?  T ?"d 7?  T z = ? = ? zI ?D??  TI ?D??  T z¨  T¨  T z ??  T ??  T zv9  Tv9  T ze?  Te?  T z ?è  T ?è  T z]?  T]?  T ?"d 7?  T ?"d 7?  T zD "S D "S z?"d 7?  T-é# H}??"d 7?  T-é# H}? zè¨￥?"d 7?  Tè¨￥?"d 7?  T zò?  T￥+ ?a?¨# a¨ f ?ò?  T￥+ ?a?¨# a¨ f ? z?"d￥+?#  a¨￥ 7?  T?"d￥+?#  a¨￥ 7?  T z ??ê4 a?￥ 7?  T ??ê4 a?￥ 7?  T ?"d 7?  T ?"d 7?  T ?"d 7?  T# é ?"d 7?  T ?"d 7?  T zI ?D??  T I ?D??  T zK* K* 1956 M - P¨￥  T?  TiíZ M - P¨￥  T?  TiíZ E ? Vy?1c ???5?s? E ? Vy?1c ???5?s? ? ? (2) ?????-ù5b ?????-ù5b z?1-ù5?1-ù5 z àμ??# !9 àμ??# !9 zV??ií P¨?3 psD ? aV??ií P¨?3 psD ? a ?"d 7?  T ?"d 7?  T ¨ ??  T ?"d 7?  T ?"d 7?  T ??  T ??  T ?"d 7?  T ?"d 7?  T s s !9 !9 L @ L @ V??s V??s 3 ps 3 ps "ds "ds à Q !9 à Q !9 W% !9 W% !9 I} ? I} ? ?í? k ?í? k "?? k "?? k ? #"d? k ? #"d? k ?T#??1 ?T#??1 %?￥ ??  T ?"d 7?  T ?"d 7?  T ?"d 7?  T ?"d 7?  T z ??  T￥Btù5 ??  T￥Btù5 z ?X￥L ! ?X￥L ! z?B? ù?B? ù z3 pM÷óq3v???3 pM÷óq3v??? z 7?? ù?é 7?? ù?é z?B?ú O >?-?'g?úb?B?ú O >?-?'g?úb ?"d 7?  T ?"d 7?  T zv9  T v9  T zv9  T ^B?"d 7?￥V?v9  T ^B?"d 7?￥V? zü3 ps?ü3 ps? '' ?? ?? '' ?s ?aGv9 7?9?s ?aGv9 7?9 ?| ?? ?| ?? ' ' ?s3 p ?s3 p ' ' ￥ 7?è1B? 7?? ￥ 7?è1B? 7?? ù ??? ù VG? ü? 7?b ù ??? ù VG? ü? 7?b z ??? ù￥¨ b#?l1??￥yT#?± ??? ù￥¨ b#?l1??￥yT#?± ￥óq ??¨ ??é? O??ìBQb ￥óq ??¨ ??é? O??ìBQb ?"d 7?  T ?"d 7?  T ?"d 7?  T ?"d 7?  T zv9  T a¨- f ? v9  T a¨- f ? zF?￥ "SD3 p V? ?D b# í ?bF?￥ "SD3 p V? ?D b# í ?b z? ?3s ùI b? ?3s ùI b zF?31 HW ? ??¤ s? S/bF?31 HW ? ??¤ s? S/b ?"d 7?  T ?"d 7?  T zK 7? K 7? zv9  T ¤[?Z  ? 1?μ?pv9  T ¤[?Z  ? 1?μ?p z???? z n5 ?? Z? ù?￥á ?|?￥ò?+? n5 ?? Z? ù?￥á ?|?￥ò?+?   story[# LC?t+? ?{n￥ HW#' [# LC?t+? ?{n￥ HW#' á á z Z?é?ê4 Z?é?ê4 z| LC B+?￥FqéB?%s1 ? | LC B+?￥FqéB?%s1 ? z 7? |?i???ò? ?  7? |?i???ò? ? z"?"? zù5ù5 ?"d 7?  T ?"d 7?  T ze?  T e?  T ze?  T ^B?"d 7?-ZE?ZE5?e?  T ^B?"d 7?-ZE?ZE5?  P¨?3 p? b#￥?s? |?? ?g  P¨?3 p? b#￥?s? |?? ?g ?-?zGsa !9D L @??? y ?é ?-?zGsa !9D L @??? y ?é ?e? 7?b ?e? 7?b z 7?V?? <?D*[e?"dS1 P¨? 7?V?? <?D*[e?"dS1 P¨? D? |?3 pYDD-y  ?ZiV D? |?3 pYDD-y  ?ZiV e?-?TDí ?[ ? ba??# ? 3 p e?-?TDí ?[ ? ba??# ? 3 p i?[??D ? e?"db  ???Q-é i?[??D ? e?"db  ???Q-é ?°?"d?? ?Z??1?b ?°?"d?? ?Z??1?b ?"d 7?  T ?"d 7?  T ?"d 7?  T ?"d 7?  T ze?  T?1+? e?  T?1+? z <?e?-D* 7?# P¨?ú￥?Db <?e?-D* 7?# P¨?ú￥?Db z <?[e?T1 P¨?#"d 7??-3 p <?[e?T1 P¨?#"d 7??-3 p YDD?b YDD?b zV3 pK b#?s" m 7?e?iiV P¨V3 pK b#?s" m 7?e?iiV P¨ ?e?-?TDí ?Qˉ??D ? b ?e?-?TDí ?Qˉ??D ? b z ?QQˉ-? ù1D V ? ê b ?QQˉ-? ù1D V ? ê b ze?  T￥ .ù5 e?  T￥ .ù5 ze?  T ?èn￥?¨| { e?  T ?èn￥?¨| { ?"d 7?  T ?"d 7?  T z é Te?| {é Te?| { z | ?μ3 p A?B??| ?μ3 p A?B?? 8V3 pK b#￥? 8V3 pK b#￥? s y ?￥ü ?"d 7? s y ?￥ü ?"d 7? ? ù[???e? ? ù[???e? "d "d z  ?¨?e?D P¨? ?¨?e?D P¨? Y[ ??a??? ? Y[ ??a??? ?  3 pi?[S1/  3 pi?[S1/ B? ùe?é-G B? ùe?é-G b z ?? ù?￥Qˉé?? ù?￥Qˉé ?B°?e?"d? ?B°?e?"d? ? ?Z??1?b ? ?Z??1?b ?"d 7?  T ?"d 7?  T ?è  T ?"d 7?  T ?"d 7?  T z ?è  T￥+? ?è  T￥+? zú?B?s￥ !9 ?×? -?ì￥?Zú?B?s￥ !9 ?×? -?ì￥?Z ?31BáaWD? T[E ??A1￥ ! ?31BáaWD? T[E ??A1￥ ! 9??b z 7? ?B¨  ?è  T Vê4??e?  7? ?B¨  ?è  T Vê4??e?  T[???Bb T[???Bb z?÷ ? |-Z?$s??B3$3 %?÷ ? |-Z?$s??B3$3 % H ?è  T??×Sí? - ?-¨ b H ?è  T??×Sí? - ?-¨ b ?"d 7?  T ?"d 7?  T z]?  T ]?  T z÷1??/<￥]?y?  "￥? ê "d÷1??/<￥]?y?  "￥? ê "d 7? HW[F ??'-÷?b 7? HW[F ??'-÷?b z ]?  T ^? ???1￥X ?r? HWé]?  T ^? ???1￥X ?r? HWé ? ê ￥ "S ? ê ￥ "S z?]? ?]? Activity Concurrency z?]? ?]? Information Concurrency ??/ F ??/ F z _ -.?_ -.? (Front Loading) z _a.?_a.? (Flying) z y ?μr￥??D? ?# ?8yT￥|?ìay ?μr￥??D? ?# ?8yT￥|?ìa z???￥5 ?"d???￥5 ?"d ?"d 7?  T ?"d 7?  T z ]?  T￥?Z?1]?  T￥?Z?1 ^1  a? <* ^1  a? <* èq￥ g?é? èq￥ g?é? z a? ^ 7? HW￥ ê a? ^ 7? HW￥ ê  V4úá ?￥é?  V4úá ?￥é? ? ? z  ??5 ^?X￥??  ??5 ^?X￥?? # ?N￥?Y P # ?N￥?Y P ¤[ "5 ?￥ˉv ¤[ "5 ?￥ˉv ?4ú | ??'9M ?4ú | ??'9M 4ú ? àμ￡[  4ú ? àμ￡[  z￥y #5 ?ZE z￥y #5 ?ZE 5?^r? "Sb 5?^r? "Sb ?"d 7?  T ?"d 7?  T '"d?' ? ?F ? ?F ? ?F " ? 8 ? ? k ? ?F ? ?F " ? 8 ? ? k ? ?'B ?'= ?' ? ? ?'B ?'= '"d?' ? ?F ? ?F ? ?F ]? 7? ¨? 7? ? _  `  T ?"d 7?  T ?"d 7?  T  T  T a? a? ?? ?? I ? I ? /?? ?? a¨?í3 ???1￥ a¨?í3 ???1￥ l? ?"d l? ?"d ? a¨?v?ˉ"d ? a¨?v?ˉ"d ?? ?? ó? z?aμ?￥ ó? z?aμ?￥ ¨?3 p 4 I n ¨?3 p 4 I n v9 v9 * ùí * ùí 2 7ba|? e? e? ? Z?3 p s ?@ ? Z?3 p s ?@ idí? V idí? V ?è ?è 8?ò ?  T+? 8?ò ?  T+? v? èq 7??ú1 p v? èq 7??ú1 p ]? ]? ?_? ?3 p ?_? ?3 p z￥"?? z￥"?? ?± è?¨ ?± è?¨ ?_` ?_` ¨ =Y} ¨ =Y} ¨ Wi? ¨ Wi?