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Localized states in the transition to turbulence in plane Poiseuille flow and thermal boundary layers

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▲♦❝❛❧✐③❡❞ st❛t❡s

✐♥ t❤❡ tr❛♥s✐t✐♦♥ t♦ t✉r❜✉❧❡♥❝❡ ✐♥ ♣❧❛♥❡

P♦✐s❡✉✐❧❧❡ ✢♦✇ ❛♥❞ t❤❡r♠❛❧ ❜♦✉♥❞❛r② ❧❛②❡rs

❉✐ss❡rt❛t✐♦♥

③✉r ❊r❧❛♥❣✉♥❣ ❞❡s ❉♦❦t♦r❣r❛❞❡s ❞❡r ◆❛t✉r✇✐ss❡♥s❝❤❛❢t❡♥ ✭❉r✳ r❡r✳ ♥❛t✳✮

❞❡♠ ❋❛❝❤❜❡r❡✐❝❤ P❤②s✐❦ ❞❡r P❤✐❧✐♣♣s✲❯♥✐✈❡rs✐tät ▼❛r❜✉r❣

✈♦r❣❡❧❡❣t ✈♦♥

❙t❡❢❛♥ ❩❛♠♠❡rt

❛✉s ❍❡r❜♦r♥

▼❛r❜✉r❣✱ ❆✉❣✉st ✷✵✶✺

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❱♦♠ ❋❛❝❤❜❡r❡✐❝❤ P❤②s✐❦ ❞❡r P❤✐❧✐♣♣s✲❯♥✐✈❡rs✐tät ▼❛r❜✉r❣ ✭❍♦❝❤s❝❤✉❧❦❡♥♥③✐✛❡r ✶✶✽✵✮ ❛❧s ❉✐ss❡rt❛t✐♦♥ ❛♥❣❡♥♦♠♠❡♥ ❛♠✿ ✵✷✳✶✵✳✷✵✶✺ ❚❛❣ ❞❡r ♠ü♥❞❧✐❝❤❡♥ Prü❢✉♥❣✿ ✵✻✳✶✵✳✷✵✶✺ ❊rst❣✉t❛❝❤t❡r✿ Pr♦❢✳ ❉r✳ ❇r✉♥♦ ❊❝❦❤❛r❞t ❋❛❝❤❜❡r❡✐❝❤ P❤②s✐❦ P❤✐❧✐♣♣s✲❯♥✐✈❡rs✐tät ▼❛r❜✉r❣ ❩✇❡✐t❣✉t❛❝❤t❡r✿ Pr♦❢✳ ❉r✳ ▼❛r❝ ❆✈✐❧❛ ▲❡❤rst✉❤❧ ❢ür ❙trö♠✉♥❣s♠❡❝❤❛♥✐❦ ❋r✐❡❞r✐❝❤✲❆❧❡①❛♥❞❡r✲❯♥✐✈❡rs✐tät ❊r❧❛♥❣❡♥✲◆ür♥❜❡r❣

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▲♦❝❛❧✐③❡❞ st❛t❡s

✐♥ t❤❡ tr❛♥s✐t✐♦♥ t♦ t✉r❜✉❧❡♥❝❡ ✐♥ ♣❧❛♥❡

P♦✐s❡✉✐❧❧❡ ✢♦✇ ❛♥❞ t❤❡r♠❛❧ ❜♦✉♥❞❛r② ❧❛②❡rs

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❩✉s❛♠♠❡♥❢❛ss✉♥❣

❉✐❡ ✈♦r❧✐❡❣❡♥❞❡ ❆r❜❡✐t ❜❡❢❛sst s✐❝❤ ♠✐t ❞❡r ♥✉♠❡r✐s❝❤❡♥ ❯♥t❡rs✉❝❤✉♥❣ ❞❡s ❚✉r❜✉❧❡♥③ü❜❡r❣❛♥❣s ✉♥❞ ❛✉❢tr❡t❡♥❞❡r ❧♦❦❛❧✐s✐❡rt❡r ❙tr✉❦t✉r❡♥ ✐♥ ❞❡r ❡❜❡♥❡♥ P♦✐s❡✉✐❧❧❡✲❙trö♠✉♥❣ ✉♥❞ ❞❡♠ ❛s②♠♣t♦✲ t✐s❝❤❡♥ ❆♥s❛✉❣♣r♦✜❧ ü❜❡r ❡✐♥❡r ❣❡❤❡✐③t❡♥ P❧❛tt❡✳ ❉✐❡ ❧❛♠✐♥❛r❡♥ Pr♦✜❧❡ ❜❡✐❞❡r ❙trö♠✉♥❣❡♥ ③❡✐✲ ❣❡♥ ❡✐♥❡ ❧✐♥❡❛r❡ ■♥st❛❜✐❧✐tät ✉♥❞ ✐♠ s♦❣❡♥❛♥♥t❡♥ s✉❜❦r✐t✐s❝❤❡♥ ❇❡r❡✐❝❤✱ ✇♦ ❞❛s ❧❛♠✐♥❛r❡ Pr♦✜❧ st❛❜✐❧ ✐st✱ ❦❛♥♥ ♠❛♥ ❥❡✇❡✐❧s ü❜❡r❞❛✉❡r♥❞❡✱ ❛❜❡r ❞❡♥♥♦❝❤ tr❛♥s✐❡♥t❡ ❚✉r❜✉❧❡♥③ ❜❡♦❜❛❝❤t❡♥✳ ■♥ ❜❡✐❞❡♥ ❙trö♠✉♥❣❡♥ ❦ö♥♥❡♥ ❡✐♥❡ ❱✐❡❧③❛❤❧ ✈♦♥ ❡①❛❦t❡♥ ▲ös✉♥❣❡♥ ❞❡r ◆❛✈✐❡r✲❙t♦❦❡s✲●❧❡✐❝❤✲ ✉♥❣❡♥ ♠✐t s♣❡③✐❡❧❧❡♥ ♥✉♠❡r✐s❝❤❡♥ ❱❡r❢❛❤r❡♥ ❛✉❢❣❡s♣ürt ✇❡r❞❡♥✳ ❊✐♥❡ ❣❡♥❛✉❡r❡ ❆♥❛❧②s❡ ③❡✐❣t✱ ❞❛ss ✐♥ ❜❡✐❞❡♥ ❙②st❡♠❡♥ ❞❡r ❯rs♣r✉♥❣ ❞❡r s✉❜❦r✐t✐s❝❤❡♥ ❚✉r❜✉❧❡♥③ ❛✉❢ ❡✐♥❡ ❇✐❢✉r❦❛t✐♦♥s❦❛s❦❛❞❡ ③✉rü❝❦❣❡❢ü❤rt ✇❡r❞❡♥ ❦❛♥♥✱ ✇❡❧❝❤❡ ✐❤r❡♥ ❆✉s❣❛♥❣s♣✉♥❦t ✐♥ ❡✐♥❡r s♦❧❝❤❡♥ ❡①❛❦t❡♥ ▲ös✉♥❣ ❤❛t✳ ❉✐❡ ❇✐❢✉r❦❛t✐♦♥s❦❛s❦❛❞❡ ❡r③❡✉❣t ❡✐♥❡♥ ❝❤❛♦t✐s❝❤❡♥ ❆ttr❛❦t♦r✱ ❞❡r ❞✉r❝❤ ❡✐♥❡ ä✉ÿ❡r❡ ❑r✐s❡♥❜✐✲ ❢✉r❦❛t✐♦♥ ✭❇♦✉♥❞❛r② ❝r✐s✐s ❜✐❢✉r❛t✐♦♥✮ ✐♥ ❡✐♥❡♥ ❝❤❛♦t✐s❝❤❡♥ ❙❛tt❡❧ ♠✐t ❡①♣♦♥❡♥t✐❡❧❧ ✈❡rt❡✐❧t❡♥ ▲❡❜❡♥s③❡✐t❡♥ ✉♠❣❡✇❛♥❞❡❧t ✇✐r❞✳ ❊✐♥❡ ③✇❡✐t❡ ❆rt ✈♦♥ ❑r✐s❡♥❜✐❢✉r❦❛t✐♦♥❡♥✱ s♦❣❡♥❛♥♥t❡ ✐♥♥❡r❡ ❑r✐s❡♥❜✐❢✉r❦❛t✐♦♥❡♥ ✭■♥t❡r✐♦r ❝r✐s✐s ❜✐❢✉r❝❛t✐♦♥✮✱ tr❛❣❡♥ ③✉r ❱❡r❣röÿ❡r✉♥❣ ❞❡s ❆ttr❛❦t♦rs ❜❡✐ ✉♥❞ ✇❡r❞❡♥ ❢ür ❞✐❡ ❡❜❡♥❡ P♦✐s❡✉✐❧❧❡✲❙trö♠✉♥❣ ❣❡♥❛✉❡r ✉♥t❡rs✉❝❤t✳ ❲ä❤r❡♥❞ ❞❡r ❆✉s❣❛♥❣s③✉st❛♥❞ ❢ür ❞✐❡ ❇✐❢✉❦❛t✐♦♥s❦❛s❦❛❞❡ ✐♠ ❋❛❧❧❡ ❞❡s ❛s②♠♣t♦t✐s❝❤❡♥ ❆♥✲ s❛✉❣♣r♦✜❧s ü❜❡r ❡✐♥❡r ❣❡❤❡✐③t❡♥ P❧❛tt❡ ♠✐t ❞❡r ■♥st❛❜✐❧✐tät ❞❡s ❧❛♠✐♥❛r❡♥ Pr♦✜❧s ✈❡r❜✉♥❞❡♥ ✐st✱ ❤❛❜❡♥ ❞✐❡ r❡❧❡✈❛♥t❡♥ ❩✉stä♥❞❡ ✐♥ ❞❡r ❡❜❡♥❡♥ P♦✐s❡✉✐❧❧❡✲❙trö♠✉♥❣ ❦❡✐♥❡ ❱❡r❜✐♥❞✉♥❣ ③✉♠ ❧❛♠✐♥❛r❡♥ ❩✉st❛♥❞✳ ❉✐❡s ❢ü❤rt ③✉ ③✇❡✐ ❦♦❡①✐st✐❡r❡♥❞❡♥ Ü❜❡r❣❛♥❣s♠❡❝❤❛♥✐s♠❡♥ ③✉r ❚✉r❜✉❧❡♥③✳ ❉✐❡ ❜❡✐❞❡♥ ▼❡❝❤❛♥✐s♠❡♥ s✐♥❞ ❞❡r ❇②♣❛ss✲Ü❜❡r❣❛♥❣ ✉♥❞ ❞❡r ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣✲Ü❜❡r❣❛♥❣✳ ❉✐❡ P❤❛s❡♥r❛✉♠str✉❦t✉r✱ ❞✐❡ ❞❡r ❑♦❡①✐st❡♥③ ❞✐❡s❡r ❜❡✐❞❡♥ Ü❜❡r❣❛♥❣s♠❡❝❤❛♥✐s♠❡♥ ③✉❣r✉♥✲ ❞❡ ❧✐❡❣t✱ ✇✐r❞ ✐♥ ❞✐❡s❡r ❆r❜❡✐t ✉♥t❡rs✉❝❤t✳ ❩✇❡✐❞✐♠❡♥s✐♦♥❛❧❡ Pr♦❥❡❦t✐♦♥❡♥✱ ❞✐❡ ❡①❛❦t❡ ▲ös✉♥❣❡♥ ♥✉t③❡♥✱ ③❡✐❣❡♥✱ ❞❛ss ❡s ✉♥t❡r❤❛❧❜ ❞❡r ❦r✐t✐s❝❤❡♥ ❘❡②♥♦❧❞s③❛❤❧ ❞r❡✐ ✈❡rs❝❤✐❡❞❡♥❡ ❇❡r❡✐❝❤❡ ✐♠ ❩✉✲ st❛♥❞sr❛✉♠ ❣✐❜t✳ ■♥ ❡✐♥❡♠ ❞✐❡s❡r ❇❡r❡✐❝❤❡ ❧✐❡❣t ❇②♣❛ss✲Ü❜❡r❣❛♥❣ ✈♦r✱ ✐♠ ③✇❡✐t❡♥ ❜❡♦❜❛❝❤t❡t ♠❛♥ ❡✐♥ r❛s❝❤❡s ❩✉❧❛✉❢❡♥ ❛✉❢ ❞❡♥ ❧❛♠✐♥❛r❡♥ ❩✉st❛♥❞ ✉♥❞ ✐♠ ❞r✐tt❡♥ ❇❡r❡✐❝❤✱ ✇❡❧❝❤❡r s❡❤r ❦❧❡✐♥ ✐st ✉♥❞ ♠✐t st❡✐❣❡♥❞❡r ❘❡②♥♦❧❞s③❛❤❧ ✇ä❝❤st✱ ❦♦♠♠t ❡s ③✉ ❡✐♥❡♠ ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣✲Ü❜❡r❣❛♥❣✳ ❉✐❡ ❞r❡✐ ❇❡r❡✐❝❤❡ ❧✐❡❣❡♥ ✐♠ P❤❛s❡♥r❛✉♠ t❡✐❧✇❡✐s❡ s❡❤r ❞✐❝❤t ❜❡✐❡✐♥❛♥❞❡r ✉♥❞ ✉♥t❡rs❝❤❡✐❞❡♥ s✐❝❤ ❞❡✉t❧✐❝❤ ✐♥ ❞❡r ❩❡✐t✱ ❞✐❡ ❡✐♥❡ ❞❛r✐♥ ❜❡✜♥❞❧✐❝❤❡ ❆♥❢❛♥❣s❜❡❞✐♥❣✉♥❣ ❜❡♥öt✐❣t ✉♠ ❡✐♥❡♥ t✉r❜✉❧❡♥t❡♥ ❩✉st❛♥❞ ③✉ ❡rr❡✐❝❤❡♥✳ ❖❜❡r❤❛❧❜ ❞❡r ❦r✐t✐s❝❤❡♥ ❘❡②♥♦❧❞s③❛❤❧ ❣✐❜t ❡s ♥✉r ♥♦❝❤ ❞✐❡ ❇❡r❡✐❝❤❡ ♠✐t ❇②♣❛ss✲ ✉♥❞ ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣✲Ü❜❡r❣❛♥❣✱ ✇❡❧❝❤❡ ❞✉r❝❤ ❞✐❡ st❛❜✐❧❡ ▼❛♥♥✐❣❢❛❧t✐❣❦❡✐t ❡✐♥❡r ❜❡s♦♥❞❡r❡♥ ❡①❛❦t❡♥ ▲ös✉♥❣ ❞❡s ❙②st❡♠s✱ ❞❡s ❇②♣❛ss✲❊❞❣❡st❛t❡s✱ ❣❡tr❡♥♥t ✇❡r❞❡♥✳ ■♥ ❜❡✐❞❡♥ ❙trö♠✉♥❣❡♥ ❡①✐st✐❡r❡♥ ✈❡rs❝❤✐❡❞❡♥❡ rä✉♠❧✐❝❤ ❧♦❦❛❧✐s✐❡rt❡ ❡①❛❦t❡ ▲ös✉♥❣❡♥✳ ■♥ ❞❡r ❡❜❡♥❡♥ P♦✐s❡✉✐❧❧❡ ❙trö♠✉♥❣ ❦ö♥♥❡♥ ❞✉r❝❤ ❆♥❛❧②s❡ ❞❡r ■♥st❛❜✐❧✐tät❡♥ rä✉♠❧✐❝❤ ❛✉s❣❡❞❡❤♥t❡r ❱

(6)

❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣✲❲❡❧❧❡♥✱ ♣❡r✐♦❞✐s❝❤❡ ❇❛❤♥❡♥ ❣❡❢✉♥❞❡♥ ✇❡r❞❡♥✱ ✇❡❧❝❤❡ ❛✉s ✐♥ ❙trö♠✉♥❣s✲ r✐❝❤t✉♥❣ ❧♦❦❛❧✐s✐❡rt❡♥ P❛❦❡t❡♥ ✈♦♥ ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣✲❲❡❧❧❡♥ ❜❡st❡❤❡♥✳ ❉❡s ❲❡✐t❡r❡♥ ❦❛♥♥ ❡✐♥❡ ✐♥ ❙trö♠✉♥❣sr✐❝❤t✉♥❣ ❧♦❦❛❧✐s✐❡rt❡✱ ❞r❡✐❞✐♠❡♥s✐♦♥❛❧❡✱ r❡❧❛t✐✈ ♣❡r✐♦❞✐s❝❤❡ ❇❛❤♥ ♠✐tt❡❧s ❞❡r s♦❣❡♥❛♥♥t❡♥ ❊❞❣❡✲❚r❛❝❦✐♥❣ ❚❡❝❤♥✐❦✱ ❞✐❡ ❡s ❡r❧❛✉❜t ❚r❛❥❡❦t♦r✐❡♥ ❛✉❢ ❞❡r ●r❡♥③❡ ③✇✐s❝❤❡♥ ❧❛✲ ♠✐♥❛r❡♠ ✉♥❞ t✉r❜✉❧❡♥t❡♠ ❆ttr❛❦t✐♦♥s❣❡❜✐❡t ③✉ ✈❡r❢♦❧❣❡♥✱ ❣❡❢✉♥❞❡♥ ✇❡r❞❡♥✳ ❉✐❡ rä✉♠❧✐❝❤❡ ▲ä♥❣❡ ❞✐❡s❡r ♣❡r✐♦❞✐s❝❤❡♥ ❇❛❤♥ ✇ä❝❤st ❛♥♥ä❤❡r♥❞ ❧✐♥❡❛r ♠✐t ❞❡r ❘❡②♥♦❧❞s③❛❤❧✳ ❉✐❡ ❊r❣❡❜♥✐ss❡ ③❡✐❣❡♥✱ ❞❛ss ❞✐❡ ❧♦❦❛❧✐s✐❡rt❡ ♣❡r✐♦❞✐s❝❤❡ ❇❛❤♥ ❜❡✐ ❤♦❤❡♥ ❘❡②♥♦❧❞s③❛❤❧❡♥ ✐♥ ❡✐♥❡r s✉❜❦r✐t✐s❝❤❡♥✱ ❧❛♥❣✇❡❧❧✐❣❡♥ ❇✐❢✉r❦❛t✐♦♥ ❡✐♥❡r rä✉♠❧✐❝❤ ❛✉s❣❡❞❡❤♥t❡♥ ❧❛✉❢❡♥❞❡♥ ❲❡❧❧❡ ❡r③❡✉❣t ✇✐r❞✳ ❉✉r❝❤ ❡✐♥❡ ❱❡r❢♦❧❣✉♥❣ ❞✐❡s❡r ❇❛❤♥ ✐♥ ❞❡r ❇r❡✐t❡ ❞❡r s✐♠✉❧✐❡rt❡♥ ♥✉♠❡r✐s❝❤❡♥ ❉♦♠ä♥❡ ❦❛♥♥ ❡✐♥❡ r❡❧❛t✐✈ ♣❡r✐✲ ♦❞✐s❝❤❡ ❇❛❤♥ ✐❞❡♥t✐✜③✐❡rt ✇❡r❞❡♥✱ ❞✐❡ ✐♥ ❜❡✐❞❡ ❘✐❝❤t✉♥❣❡♥ ♣❛r❛❧❧❡❧ ③✉ ❞❡♥ P❧❛tt❡♥ ❧♦❦❛❧✐s✐❡rt ✐st✳ ❉✐❡ ✐♥ ❙trö♠✉♥❣sr✐❝❤t✉♥❣ ❧♦❦❛❧✐s✐❡rt❡♥ ❩✉stä♥❞❡ ③❡✐❣❡♥ ❡✐♥❡♥ ❆❜❢❛❧❧ ❞❡r ●❡s❝❤✇✐♥❞✐❣❦❡✐ts❦♦♠✲ ♣♦♥❡♥t❡♥✱ ❞❡r ü❜❡r ❡✐♥❡ ❣röÿ❡r❡ ❉✐st❛♥③ ❣✉t ♠✐t ❡✐♥❡♠ ❡①♣♦♥❡♥t✐❡❧❧❡♥ ❆❜❢❛❧❧ ü❜❡r❡✐♥st✐♠♠t✳ ❉✐❡ ❊r❦❡♥♥t♥✐ss❡ ❞✉r❝❤ ❞✐❡ ❞♦♣♣❡❧t✲❧♦❦❛❧✐s✐❡rt❡ ♣❡r✐♦❞✐s❝❤❡ ❇❛❤♥ ✉♥❞ ❞✐❡ ❙✐♠✉❧❛t✐♦♥❡♥ t✉r✲ ❜✉❧❡♥t❡r ❋❧❡❝❦❡♥✱ ③❡✐❣❡♥ ❥❡❞♦❝❤✱ ❞❛ss ✐♥ ❞❡r ❡❜❡♥❡♥ P♦✐s❡✉✐❧❧❡✲❙trö♠✉♥❣ ✐♠ ❣r♦ÿ❡♥ ❆❜st❛♥❞ ✉♠ ❡✐♥❡ ❧♦❦❛❧✐s✐❡rt❡ ❙tr✉❦t✉r ❞❡r ❆❜❢❛❧❧ ❞❡r ●❡s❝❤✇✐♥❞✐❣❦❡✐ts❦♦♠♣♦♥❡♥t❡♥ ❡✐♥❡♠ P♦t❡♥③❣❡s❡t③ ❢♦❧❣t✳ ❋ür ❞❛s ❛s②♠♣t♦t✐s❝❤❡ ❆♥s❛✉❣♣r♦✜❧ ü❜❡r ❡✐♥❡r ❣❡❤❡✐③t❡♥ P❧❛tt❡ ❦ö♥♥❡♥ ✈❡rs❝❤✐❡❞❡♥❡ ❡✐♥❢❛❝❤✲ ✉♥❞ ❛✉❝❤ ❞♦♣♣❡❧t✲❧♦❦❛❧✐s✐❡rt❡ ❋✐①♣✉♥❦t❡ ❣❡❢✉♥❞❡♥ ✇❡r❞❡♥✳ ❊✐♥❡r ❞❡r ❞♦♣♣❡❧t✲❧♦❦❛❧✐s✐❡rt❡♥ ❩✉✲ stä♥❞❡ ✇✐r❞✱ ä❤♥❧✐❝❤ ✇✐❡ ✐♥ ❞❡r ❡❜❡♥❡♥ P♦✐s❡✉✐❧❧❡ ❙trö♠✉♥❣✱ ❞✉r❝❤ ③✇❡✐ ♣❛r❛❧❧❡❧ st❛tt✜♥❞❡♥❞❡✱ ❧❛♥❣✇❡❧❧✐❣❡ ❇✐❢✉r❦❛t✐♦♥❡♥ ❡✐♥❡r rä✉♠❧✐❝❤ ❛✉s❣❡❞❡❤♥t❡♥ ▲ös✉♥❣ ❡r③❡✉❣t✳ ❙t✉❞✐❡rt ♠❛♥ ❞✐❡ ■♥st❛✲ ❜✐❧✐tät❡♥ ❞❡r ❧♦❦❛❧✐s✐❡rt❡♥ ▲ös✉♥❣❡♥✱ s♦ st❡❧❧t ♠❛♥ ❢❡st✱ ❞❛ss ❡♥t❧❛♥❣ ❞❡r❡♥ ✐♥st❛❜✐❧❡r ❘✐❝❤t✉♥❣❡♥ P❧✉♠❡✲❛rt✐❣❡ ❉②♥❛♠✐❦ ❛✉❢tr✐tt✳ P❧✉♠❡s ✐♠ st✉❞✐❡rt❡♥ ❙②st❡♠ ❦ö♥♥❡♥ ❛❧s♦ ❛❧s ❡✐♥❡ ❇❡✇❡❣✉♥❣ ❡♥t❧❛♥❣ ❞❡r ✐♥st❛❜✐❧❡♥ ▼❛♥♥✐❣❢❛❧t✐❣❦❡✐t ❡✐♥❡r ❡①❛❦t❡♥ ▲ös✉♥❣ ✐♥t❡r♣r❡t✐❡rt ✇❡r❞❡♥✳ ❆✉s❣❡❤❡♥❞ ✈♦♥ ❞❡♥ ❡①❛❦t❡♥ ▲ös✉♥❣❡♥ ✐st ❡s ♠ö❣❧✐❝❤✱ ❞✐❡s❡ ❉②♥❛♠✐❦ s②st❡♠❛t✐s❝❤ ③✉ st✉❞✐❡r❡♥✳ ❉✐❡ ❘❡s✉❧✲ t❛t❡ ③❡✐❣❡♥✱ ❞❛ss s✐❝❤ ❞✐❡ P❧✉♠❡s ü❜❡r ❡✐♥❡♥ ❧ä♥❣❡r❡♥ ❩❡✐tr❛✉♠ ♠✐t ❡✐♥❡r ❦♦♥st❛♥t❡♥ ●❡s❝❤✇✐♥✲ ❞✐❣❦❡✐t ❛✉s❜r❡✐t❡♥✱ ✇♦❜❡✐ ❞✐❡ ❆✉s❜r❡✐t✉♥❣s❣❡s❝❤✇✐♥❞✐❣❦❡✐t ♠✐t ❞❡r ❘❛②❧❡✐❣❤③❛❤❧ ③✉♥✐♠♠t✳ ❯♠ ❞❛s ❛s②♠♣t♦t✐s❝❤❡ ❆♥s❛✉❣♣r♦✜❧ ü❜❡r ❡✐♥❡r ❣❡❤❡✐③t❡♥ P❧❛tt❡ ✉♥❞ ❞❡ss❡♥ ❡①❛❦t❡ ▲ös✉♥❣❡♥ ③✉ st✉❞✐❡r❡♥✱ ✇✉r❞❡ ❞❡r ❈❤❛♥♥❡❧✢♦✇✲❈♦❞❡ ✭✇✇✇✳❝❤❛♥♥❡❧✢♦✇✳♦r❣✮ ❡r✇❡✐t❡rt✳ ❉❡r ❡♥t✇✐❝❦❡❧t❡ ❈♦❞❡ ❡r♠ö❣❧✐❝❤t ❛✉ÿ❡r❞❡♠ ❞✐❡ ❙✐♠✉❧❛t✐♦♥ ✈♦♥ ❘❛②❧❡✐❣❤✲❇é♥❛r❞✲✱ P♦✐s❡✉✐❧❧❡✲❘❛②❧❡✐❣❤✲❇é♥❛r❞✲ ✉♥❞ ❈♦✉❡tt❡✲❘❛②❧❡✐❣❤✲❇é♥❛r❞✲❙trö♠✉♥❣✳

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❆❜str❛❝t

❚❤✐s ❞✐ss❡rt❛t✐♦♥ ♥✉♠❡r✐❝❛❧❧② ✐♥✈❡st✐❣❛t❡s t❤❡ tr❛♥s✐t✐♦♥ t♦ t✉r❜✉❧❡♥❝❡ ❛♥❞ ♦❝❝✉rr✐♥❣ ❧♦❝❛❧✐③❡❞ str✉❝t✉r❡s ✐♥ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ❛♥❞ t❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ♦✈❡r ❛ ❤❡❛t❡❞ ♣❧❛t❡✳ ❈❛❧❝✉❧❛t✐♦♥s s❤♦✇ t❤❛t t❤❡ ❧❛♠✐♥❛r ♣r♦✜❧❡s ♦❢ ❜♦t❤ ✢♦✇s ❛r❡ ❧✐♥❡❛r❧② ✉♥st❛❜❧❡✳ ◆❡✈❡r✲ t❤❡❧❡ss✱ ✐♥ ❜♦t❤ ❝❛s❡s ❧♦♥❣✲❧✐✈✐♥❣✱ ❜✉t tr❛♥s✐❡♥t t✉r❜✉❧❡♥❝❡ ❝❛♥ ❜❡ ♦❜s❡r✈❡❞ ✐♥ t❤❡ s✉❜❝r✐t✐❝❛❧ r❛♥❣❡✳ ■♥ t❤❡ t✇♦ s②st❡♠s ❛ ♠✉❧t✐t✉❞❡ ♦❢ ❡①❛❝t s♦❧✉t✐♦♥s ♦❢ t❤❡ ◆❛✈✐❡r✲❙t♦❦❡s ❡q✉❛t✐♦♥s ✐s ✐❞❡♥t✐✜❡❞ ✉s✐♥❣ s♣❡❝✐❛❧❧② t❛✐❧♦r❡❞ ♥✉♠❡r✐❝❛❧ ♠❡t❤♦❞s✳ ❆ ❞❡t❛✐❧❡❞ ❛♥❛❧②s✐s s❤♦✇s t❤❛t ❢♦r ❜♦t❤ s②st❡♠s t❤❡ ♦r✐❣✐♥ ♦❢ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ❝❛♥ ❜❡ tr❛❝❡❞ ❜❛❝❦ t♦ ❛ ❜✐❢✉r❝❛t✐♦♥ ❝❛s❝❛❞❡ t❤❛t st❛rts ❛t ♦♥❡ ♦❢ t❤♦s❡ ❡①❛❝t s♦❧✉t✐♦♥s✳ ❚❤❡ ❜✐❢✉r❝❛t✐♦♥ ❝❛s❝❛❞❡ ❝r❡❛t❡s ❛ ❝❤❛♦t✐❝ ❛ttr❛❝t♦r ✇❤✐❝❤ ✐s tr❛♥s❢♦r♠❡❞ ✐♥t♦ ❛ ❝❤❛♦t✐❝ s❛❞❞❧❡ ❜② ❛ s♦✲❝❛❧❧❡❞ ❜♦✉♥❞❛r② ❝r✐s✐s ❜✐❢✉r❝❛t✐♦♥✳ ❚❤✐s ❝❤❛♦t✐❝ s❛❞❞❧❡ s❤♦✇s ❡①♣♦♥❡♥t✐❛❧❧② ❞✐str✐❜✉t❡❞ ❧✐❢❡t✐♠❡s✳ ❆ s❡❝♦♥❞ t②♣❡ ♦❢ ❝r✐s✐s ❜✐❢✉r❝❛t✐♦♥s✱ s♦✲❝❛❧❧❡❞ ✐♥t❡r✐♦r ❝r✐s✐s ❜✐❢✉r❝❛t✐♦♥s✱ ✇❤✐❝❤ ❛r❡ st✉❞✐❡❞ ✐♥ ❞❡t❛✐❧ ❢♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇✱ ❝♦♥tr✐❜✉t❡s t♦ ❛♥ ✐♥❝r❡❛s❡ ♦❢ t❤❡ ❛ttr❛❝t♦r ❛♥❞ ✐ts t❡♠♣♦r❛❧ ❝♦♠♣❧❡①✐t②✳ ❋♦r t❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ♦✈❡r ❛ ❤❡❛t❡❞ ♣❧❛t❡✱ t❤❡ ❡①❛❝t s♦❧✉t✐♦♥ t❤❛t ✐s t❤❡ st❛rt✐♥❣ ♣♦✐♥t ❢♦r t❤❡ ❜✐❢✉r❝❛t✐♦♥ ❝❛s❝❛❞❡ ✐s ❞✐r❡❝t❧② ❝♦♥♥❡❝t❡❞ t♦ t❤❡ ✐♥st❛❜✐❧✐t② ♦❢ t❤❡ ❧❛♠✐♥❛r st❛t❡✳ ❋♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ t❤❡r❡ ✐s ♥♦ s✉❝❤ ❝♦♥♥❡❝t✐♦♥ ❝❛✉s✐♥❣ t❤❡ ❝♦❡①✐st❡♥❝❡ ♦❢ t✇♦ tr❛♥s✐t✐♦♥ ♠❡❝❤❛♥✐s♠s t♦ t✉r❜✉❧❡♥❝❡✳ ❚❤❡s❡ ❛r❡ t❤❡ ❜②♣❛ss tr❛♥s✐t✐♦♥ ❛♥❞ t❤❡ ❚♦❧❧♠✐❡♥✲ ❙❝❤❧✐❝❤t✐♥❣ tr❛♥s✐t✐♦♥✳ ❚❤❡ st❛t❡ s♣❛❝❡ str✉❝t✉r❡ ✉♥❞❡r❧②✐♥❣ t❤❡ ❝♦❡①✐st❡♥❝❡ ♦❢ t❤❡ t✇♦ tr❛♥s✐t✐♦♥ s❝❡♥❛r✐♦s ✐s ❡①♣❧♦r❡❞ ❜② t✇♦✲❞✐♠❡♥s✐♦♥❛❧ ♣r♦❥❡❝t✐♦♥s ♦❢ t❤❡ st❛t❡ s♣❛❝❡ t❤❛t ✉s❡ ❡①❛❝t s♦❧✉t✐♦♥s✳ ❚❤❡ s❧✐❝❡s s❤♦✇ t❤❛t ❜❡❧♦✇ t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r t❤❡ st❛t❡ s♣❛❝❡ ❝♦♥s✐sts ♦❢ t❤r❡❡ ♣❛rts✳ ■♥ ♦♥❡ ♦❢ t❤❡s❡ ♣❛rts✱ ❜②♣❛ss tr❛♥s✐t✐♦♥ ✐s ❧♦❝❛t❡❞ ❛♥❞ ✐♥ ❛ s❡❝♦♥❞ ♦♥❡ ❛ ✐♠♠❡❞✐❛t❡ r❡t✉r♥ t♦ t❤❡ ❧❛♠✐♥❛r st❛t❡s ❝❛♥ ❜❡ ♦❜s❡r✈❡❞✳ ■♥ t❤❡ t❤✐r❞ ♣❛rt✱ ✇❤✐❝❤ ✐s q✉✐t❡ s♠❛❧❧ ❛♥❞ ❣r♦✇s ✇✐t❤ ✐♥❝r❡❛s✐♥❣ ❘❡②♥♦❧❞s ♥✉♠❜❡r✱ ✐♥✐t✐❛❧ ❝♦♥❞✐t✐♦♥s ✉♥❞❡r❣♦ ❚♦❧❧♠✐❡♥✲❙❝❤✐❝❤t✐♥❣ tr❛♥s✐t✐♦♥ t♦ t✉r❜✉❧❡♥❝❡✳ ■♥ t❤❡ st❛t❡ s♣❛❝❡✱ ❛❧❧ t❤r❡❡ r❡❣✐♦♥s ❧✐❡ ❝❧♦s❡ t♦ ❡❛❝❤ ♦t❤❡r ❛♥❞ ❝❛♥ ❜❡ ❞✐st✐♥❣✉✐s❤❡❞ ❜② t❤❡ t✐♠❡ ♥❡❡❞❡❞ t♦ r❡❛❝❤ t❤❡ t✉r❜✉❧❡♥t st❛t❡✳ ❆❜♦✈❡ t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r✱ ♦♥❧② t❤❡ r❡❣✐♦♥s ❝♦♥t❛✐♥✐♥❣ ❜②♣❛ss ❛♥❞ ❚♦❧❧♠✐♥❡✲❙❝❤❧✐❝❤t✐♥❣ tr❛♥s✐t✐♦♥ ❝❛♥ ❜❡ ❢♦✉♥❞✳ ❚❤❡r❡✱ ❜♦t❤ r❡❣✐♦♥s ❛r❡ s❡♣❛r❛t❡❞ ❜② t❤❡ st❛❜❧❡ ♠❛♥✐❢♦❧❞ ♦❢ ❛ s♣❡❝✐❛❧ ❡①❛❝t s♦❧✉t✐♦♥ ♦❢ t❤❡ s②st❡♠✱ t❤❡ ❜②♣❛ss ❡❞❣❡ st❛t❡✳ ■♥ ❜♦t❤ st✉❞✐❡❞ s②st❡♠s✱ ✈❛r✐♦✉s s♣❛t✐❛❧❧② ❧♦❝❛❧✐③❡❞ ❡①❛❝t s♦❧✉t✐♦♥s ❡①✐st✳ ❋♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇✱ t❤❡ ✐♥st❛❜✐❧✐t✐❡s ♦❢ t❤❡ s♣❛t✐❛❧❧② ❡①t❡♥❞❡❞ ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣ ✇❛✈❡ ❛r❡ ❛♥❛❧②③❡❞✳ ❚❤✐s ❛❧❧♦✇s t♦ ✐❞❡♥t✐❢② ♣❡r✐♦❞✐❝ ♦r❜✐ts t❤❛t ❝♦♥s✐st ♦❢ str❡❛♠✇✐s❡ ❧♦❝❛❧✐③❡❞ ♣❛❝❦❛❣❡s ♦❢ ❚♦❧❧♠✐❡♥✲ ❙❝❤❧✐❝❤t✐♥❣ ✇❛✈❡s✳ ❋✉rt❤❡r♠♦r❡✱ ❜② ✉s✐♥❣ t❤❡ t❡❝❤♥✐q✉❡ ♦❢ ❡❞❣❡✲tr❛❝❦✐♥❣✱ ✇❤✐❝❤ ❛❧❧♦✇s t♦ ❢♦❧❧♦✇ ❱■■

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tr❛❥❡❝t♦r✐❡s ♦♥ t❤❡ ❜♦✉♥❞❛r② ❜❡t✇❡❡♥ t❤❡ ❧❛♠✐♥❛r ❛♥❞ t❤❡ tr❛♥s✐❡♥t t✉r❜✉❧❡♥t ♣❛rt ♦❢ t❤❡ st❛t❡ s♣❛❝❡✱ ❛ str❡❛♠✇✐s❡ ❧♦❝❛❧✐③❡❞ t❤r❡❡✲❞✐♠❡♥s✐♦♥❛❧ ♣❡r✐♦❞✐❝ ♦r❜✐t ❝❛♥ ❜❡ ❢♦✉♥❞✳ ❚❤❡ str❡❛♠✇✐s❡ ❧❡♥❣t❤ ♦❢ t❤✐s ♣❡r✐♦❞✐❝ ♦r❜✐t ❣r♦✇s ❛♣♣r♦①✐♠❛t❡❧② ❧✐♥❡❛r ✇✐t❤ t❤❡ ❘❡②♥♦❧❞s ♥✉♠❜❡r✳ ❚❤❡ r❡s✉❧t s❤♦✇ ❢✉rt❤❡r t❤❛t t❤❡ ♦r❜✐t ✐s ❝r❡❛t❡❞ ❛t ❤✐❣❤ ❘❡②♥♦❧❞s ♥✉♠❜❡r ✐♥ ❛♥ s✉❜❝r✐t✐❝❛❧ ❧♦♥❣✲✇❛✈❡❧❡♥❣t❤ ✐♥st❛❜✐❧✐t② ♦❢ ❛ str❡❛♠✇✐s❡ ❡①t❡♥❞❡❞ tr❛✈❡❧✐♥❣ ✇❛✈❡✳ ❇② t❛❝❦✐♥❣ t❤❡ ♦r❜✐t t♦ ✇✐❞❡r ❝♦♠♣✉t❛t✐♦♥❛❧ ❞♦♠❛✐♥s✱ ❛ r❡❧❛t✐✈❡ ♣❡r✐♦❞✐❝ ♦r❜✐t t❤❛t ✐s ❧♦❝❛❧✐③❡❞ ✐♥ ❜♦t❤ ❞✐r❡❝t✐♦♥ ♣❛r❛❧❧❡❧ t♦ t❤❡ ♣❧❛t❡s ❝❛♥ ❜❡ ❢♦✉♥❞✳ ❚❤❡ str❡❛♠✇✐s❡ ❧♦❝❛❧✐③❡❞ st❛t❡ s❤♦✇s ❛ ❞❡❝❛② ♦❢ t❤❡ ✈❡❧♦❝✐t② ❝♦♠♣♦♥❡♥ts t❤❛t ♦✈❡r ❛ ✇✐❞❡r r❛♥❣❡ ✐s ✐♥ ❛ ❣♦♦❞ ❛❣r❡❡♠❡♥t ✇✐t❤ ❛♥ ❡①♣♦♥❡♥t✐❛❧ ❞❡❝❛②✳ ❍♦✇❡✈❡r✱ t❤❡ r❡s✉❧ts ❢r♦♠ t❤❡ ❞♦✉❜❧②✲ ❧♦❝❛❧✐③❡❞ st❛t❡s✱ ❛s ✇❡❧❧ ❛s s✐♠✉❧❛t✐♦♥s ♦❢ t✉r❜✉❧❡♥t s♣♦ts✱ s❤♦✇ t❤❛t ❢♦r ❧❛r❣❡ ❞✐st❛♥❝❡s t❤❡ ❞❡❝❛② ♦❢ t❤❡ ✈❡❧♦❝✐t② ❝♦♠♣♦♥❡♥ts ❢♦❧❧♦✇s ❛ ♣♦✇❡r ❧❛✇✳ ❋♦r t❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ♦✈❡r ❛ ❤❡❛t❡❞ ♣❧❛t❡✱ ✐t ✐s ❛❧s♦ ♣♦ss✐❜❧❡ t♦ ✐❞❡♥t✐❢② ❞✐✛❡r❡♥t ❡①❛❝t s♦❧✉t✐♦♥s t❤❛t ❛r❡ ❧♦❝❛❧✐③❡❞ ✐♥ ♦♥❡ ♦r t✇♦ ❞✐r❡❝t✐♦♥s ♣❛r❛❧❧❡❧ t♦ t❤❡ ♣❧❛t❡✳ ❋♦r ♦♥❡ ♦❢ t❤❡ ❞♦✉❜❧②✲❧♦❝❛❧✐③❡❞ st❛t❡s ✐t ✐s s❤♦✇♥ t❤❛t ✐t ✐s ❝r❡❛t❡❞ ✐♥ t✇♦ s✐♠✉❧t❛♥❡♦✉s ❧♦♥❣✲✇❛✈❡❧❡♥❣t❤ ✐♥st❛❜✐❧✐t✐❡s ♦❢ ❛ s♣❛t✐❛❧❧② ❡①t❡♥❞❡❞ ❡q✉✐❧✐❜r✐✉♠ s♦❧✉t✐♦♥✳ ❇② st✉❞②✐♥❣ t❤❡ ✐♥st❛❜✐❧✐t✐❡s ♦❢ t❤❡s❡ ❧♦❝❛❧✐③❡❞ ❡①❛❝t s♦❧✉t✐♦♥s ♦♥❡ r❡❝♦❣♥✐③❡s t❤❛t ♣❧✉♠❡✲❧✐❦❡ ❞②♥❛♠✐❝s ❛♣♣❡❛r ❛❧♦♥❣ t❤❡✐r ✉♥st❛❜❧❡ ❞✐r❡❝t✐♦♥s✳ ❚❤✉s✱ ♣❧✉♠❡ ♠♦t✐♦♥ ✐♥ t❤✐s ✢♦✇ ❝❛♥ ❜❡ ✐♥t❡r♣r❡t❡❞ ❛s ♠♦✈✐♥❣ ❛❧♦♥❣ t❤❡ ✉♥st❛❜❧❡ ❞✐r❡❝t✐♦♥ ♦❢ ❛♥ ❡①❛❝t s♦❧✉t✐♦♥✳ ❆ s②st❡♠❛t✐❝ ❛♥❛❧②s✐s ♦❢ t❤❡ ♣❧✉♠❡ s❤♦✇s t❤❛t ❢♦r ❛ ❧♦♥❣ t✐♠❡ ✐ts t✐♣ ♠♦✈❡s ✇✐t❤ ❛ ❝♦♥st❛♥t s♣❡❡❞ t❤❛t ✐♥❝r❡❛s❡s ✇✐t❤ t❤❡ ❘❛②❧❡✐❣❤ ♥✉♠❜❡r✳ ❚♦ st✉❞② t❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ♦✈❡r ❛ ❤❡❛t❡❞ ♣❧❛t❡ ♥✉♠❡r✐❝❛❧❧②✱ t❤❡ ❈❤❛♥✲ ♥❡❧✢♦✇✲❝♦❞❡ ✭✇✇✇✳❝❤❛♥♥❡❧✢♦✇✳♦r❣✮ ✇❛s ❡♥❤❛♥❝❡❞✳ ■♥ ❛❞❞✐t✐♦♥ t♦ t❤❡ ♣❛r❛❧❧❡❧ t❤❡r♠❛❧ ❜♦✉♥❞✲ ❛r② ❧❛②❡r✱ t❤❡ ❞❡✈❡❧♦♣❡❞ ❝♦❞❡ ❛❧❧♦✇s t♦ s✐♠✉❧❛t❡ ❘❛②❧❡✐❣❤✲❇é♥❛r❞✲✱ P♦✐s❡✉✐❧❧❡✲❘❛②❧❡✐❣❤✲❇é♥❛r❞✲ ❛♥❞ ❈♦✉❡tt❡✲❘❛②❧❡✐❣❤✲❇é♥❛r❞ ✢♦✇✳

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❈♦♥t❡♥ts

❩✉s❛♠♠❡♥❢❛ss✉♥❣ ❱ ❆❜str❛❝t ❱■■ ❈♦♥t❡♥ts ■❳ ✶ ■♥tr♦❞✉❝t✐♦♥ ✶ ■ P❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✺ ✷ ❆♥ ✐♥tr♦❞✉❝t✐♦♥ t♦ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✼ ✸ ❊❞❣❡ st❛t❡s ❛♥❞ ❡①❛❝t s♦❧✉t✐♦♥s ✐♥ s❤♦rt ❞♦♠❛✐♥s ✶✸ ✸✳✶ ■♥tr♦❞✉❝t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✸ ✸✳✷ ❚r❛✈❡❧✐♥❣ ✇❛✈❡s ❡❞❣❡ st❛t❡s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✺ ✸✳✸ P❡r✐♦❞✐❝❛❧❧② ❜✉rst✐♥❣ ❡❞❣❡ st❛t❡s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✷✵ ✸✳✹ ❚❤r❡❡✲❞✐♠❡♥s✐♦♥❛❧ tr❛✈❡❧✐♥❣ ✇❛✈❡ ❜✐❢✉r❝❛t✐♥❣ ❢r♦♠ ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣✲✇❛✈❡s ✳ ✸✵ ✹ ❚❤❡ ♦r✐❣✐♥ ♦❢ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ✸✺ ✹✳✶ ■♥tr♦❞✉❝t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✸✺ ✹✳✷ ❊♥❧❛r❣❡♠❡♥t ♦❢ t❤❡ ❛ttr❛❝t♦r ✐♥ ❛♥ ✐♥t❡r✐♦r ❝r✐s✐s ❜✐❢✉r❝❛t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✸✻ ✹✳✸ ❉❡str✉❝t✐♦♥ ♦❢ t❤❡ ❝❤❛♦t✐❝ ❛ttr❛❝t♦r ✐♥ ❛ ❜♦✉♥❞❛r② ❝r✐s✐s ❜✐❢✉r❝❛t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✸✽ ✹✳✹ ❊♠❜❡❞❞❡❞ ❛ttr❛❝t♦rs ❛♥❞ ✐♥❝r❡❛s✐♥❣ ❧✐❢❡t✐♠❡s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✹✵ ✹✳✺ ❆ttr❛❝t♦rs ❛♥❞ s❛❞❞❧❡s ✇✐t❤ ❞✐✛❡r❡♥t s♣❛t✐❛❧ ✇❛✈❡❧❡♥❣t❤ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✹✸ ✹✳✻ ❉❡♣❡♥❞❡♥❝❡ ♦♥ t❤❡ ♦♣❡r❛t✐♥❣ ❝♦♥❞✐t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✹✹ ✺ ❊①❛❝t s♦❧✉t✐♦♥s ❢♦r ❇②♣❛ss ❛♥❞ ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣ tr❛♥s✐t✐♦♥ ✹✼ ✺✳✶ ■♥tr♦❞✉❝t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✹✼ ✺✳✷ ❚✇♦✲❞✐♠❡♥s✐♦♥❛❧ s❧✐❝❡s ♦❢ t❤❡ st❛t❡ s♣❛❝❡ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✹✽ ✺✳✸ ❚❙ tr❛♥s✐t✐♦♥ ❛♥❞ ❇②♣❛ss tr❛♥s✐t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✹✾ ✻ ❙tr❡❛♠✇✐s❡ ❛♥❞ ❞♦✉❜❧②✲❧♦❝❛❧✐③❡❞ st❛t❡s ✺✼ ✻✳✶ ■♥tr♦❞✉❝t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✺✼ ✻✳✷ ❙tr❡❛♠✇✐s❡ ❧♦❝❛❧✐③❡❞ ♣❡r✐♦❞✐❝ ♦r❜✐ts ❛♥❞ ❡❞❣❡ st❛t❡s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✺✽ ✻✳✸ ❆ ❞♦✉❜❧②✲❧♦❝❛❧✐③❡❞ ♣❡r✐♦❞✐❝ ♦r❜✐t ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✻✺ ■❳

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✻✳✹ ❉♦✉❜❧②✲❧♦❝❛❧✐③❡❞ ❝❤❛♦t✐❝ ❡❞❣❡ st❛t❡s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✼✵ ✻✳✺ ▲♦❝❛❧✐③❡❞ ❚♦❧❧♠✐❡♥✲❙❝❤❧✐❝❤t✐♥❣ ✇❛✈❡s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✼✷ ✻✳✻ ❊①tr❛❝t✐♥❣ ❞✐✛❡r❡♥t ✈❡❧♦❝✐t② s❝❛❧❡s ✉s✐♥❣ t❤❡ ♠❡t❤♦❞ ♦❢ ❝♦♠♦✈✐♥❣ ❢r❛♠❡s ✳ ✳ ✳ ✳ ✼✽ ✻✳✼ ❙tr❡❛♠✇✐s❡ ❧♦❝❛❧✐③❡❞ t✉r❜✉❧❡♥❝❡ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✽✶ ✼ ❚❛✐❧s ♦❢ ❧♦❝❛❧✐③❡❞ str✉❝t✉r❡s ✽✼ ✼✳✶ ■♥tr♦❞✉❝t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✽✼ ✼✳✷ ❚❤❡ ❇r❛♥❞ ✫ ●✐❜s♦♥✲♠♦❞❡❧ ❢♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✽✽ ✼✳✸ ❆❧❣❡❜r❛✐❝ ❞❡❝❛② ✐♥ t❤❡ t❛✐❧s ♦❢ t✉r❜✉❧❡♥t s♣♦ts ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✾✷ ✽ ❙✉♠♠❛r② ♦❢ t❤❡ r❡s✉❧ts ❢♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✾✺ ✽✳✶ ❈r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❢♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✾✺ ✽✳✷ ❙✉♠♠❛r② ❛♥❞ ♦✉t❧♦♦❦ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✾✻ ■■ ❚❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ♦✈❡r ❛ ❤❡❛t❡❞ ♣❧❛t❡ ✾✾ ✾ ■♥tr♦❞✉❝t✐♦♥ t♦ t❤❡ s②st❡♠ ✶✵✶ ✶✵ ❙t❛❜✐❧✐t② ❛♥❞ s❡❝♦♥❞❛r② s♦❧✉t✐♦♥s ✶✵✺ ✶✵✳✶ ■♥tr♦❞✉❝t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✵✺ ✶✵✳✷ ❙t❛❜✐❧✐t② ❛♥❛❧②s✐s ❢♦r ❘❛❂ ✵ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✵✺ ✶✵✳✸ ❙t❛❜✐❧✐t② ❆♥❛❧②s✐s ❢♦r ❘❡❂ ✵ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✵✻ ✶✵✳✹ ❙t❛❜✐❧✐t② ❆♥❛❧②s✐s ❢♦r ❘❡6= ✵ ❛♥❞ ❘❛6= ✵ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✶✵ ✶✵✳✺ ◆✉ss❡❧t ♥✉♠❜❡rs ❢♦r s❡❝♦♥❞❛r② s♦❧✉t✐♦♥s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✶✸ ✶✶ ❚❡rt✐❛r② s♦❧✉t✐♦♥s ❛♥❞ t✉r❜✉❧❡♥❝❡ ✶✶✺ ✶✶✳✶ ■♥tr♦❞✉❝t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✶✺ ✶✶✳✷ ❙✉♣❡r❤❛r♠♦♥✐❝ ✐♥st❛❜✐❧✐t✐❡s ❛♥❞ tr❛♥s✐❡♥t ❝❤❛♦s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✶✺ ✶✶✳✸ ❙✉❜❤❛r♠♦♥✐❝ ✐♥st❛❜✐❧✐t✐❡s ❛♥❞ ❧♦❝❛❧✐③❛t✐♦♥ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✶✼ ✶✶✳✹ P❧✉♠❡✲❧✐❦❡ ♠♦t✐♦♥ ❛❧♦♥❣ ✉♥st❛❜❧❡ ❞✐r❡❝t✐♦♥s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✷✵ ✶✶✳✺ ❋✉❧❧② ❧♦❝❛❧✐③❡❞ s♦❧✉t✐♦♥s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✷✸ ✶✶✳✻ ▼❡❛♥ t✉r❜✉❧❡♥t ♣r♦✜❧❡s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✷✼ ✶✶✳✼ ❚❤❡ ❡❞❣❡✲♦❢✲❝❤❛♦s ❢♦r ✜♥✐t❡ ❘❡ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✷✾ ✶✷ ❙✉♠♠❛r② ♦❢ t❤❡ r❡s✉❧ts ❢♦r t❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ✶✸✶ ✶✸ ❈♦♠♣❛r✐s♦♥ ♦❢ t❤❡ s②st❡♠s ❛♥❞ ❝♦♥❝❧✉❞✐♥❣ r❡♠❛r❦s ✶✸✺ ❆ ◆✉♠❡r✐❝❛❧ ♠❡t❤♦❞s ✶✸✼ ❆✳✶ ❈❤❛♥♥❡❧✢♦✇ ❛♥❞ t❡♠♣❡r❛t✉r❡ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✸✼ ❆✳✷ ❙t❛❜✐❧✐t② ❛♥❛❧②s✐s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✹✵ ❆✳✸ ❋✐♥❞✐♥❣ ❡①❛❝t s♦❧✉t✐♦♥s ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✳ ✶✹✶ ❇✐❜❧✐♦❣r❛♣❤② ✶✹✸ ❉❛♥❦s❛❣✉♥❣❡♥ ✶✺✸

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❈❤❛♣t❡r ✶

■♥tr♦❞✉❝t✐♦♥

▼❛♥② ✢♦✇s s❤♦✇ t✇♦ ❞✐st✐♥❝t ❦✐♥❞s ♦❢ ❞②♥❛♠✐❝❛❧ st❛t❡s✳ ❚❤❡ ✜rst✱ t❤❡ s♦✲❝❛❧❧❡❞ ❧❛♠✐♥❛r st❛t❡✱ ✐s ❞②♥❛♠✐❝❛❧❧② s✐♠♣❧❡✱ ♦❢t❡♥ ✐♥❞❡♣❡♥❞❡♥t ♦❢ t✐♠❡ ❛♥❞ s❤♦✇s ♦♥❧② s♠♦♦t❤ ✈❛r✐❛t✐♦♥s ♦❢ t❤❡ ✈❡❧♦❝✐t✐❡s✳ ❚❤❡ s❡❝♦♥❞ ♦♥❡ ✐s t❤❡ t✉r❜✉❧❡♥t st❛t❡ t❤❛t ✐s ❡rr❛t✐❝ ❛♥❞ s❤♦✇s ❧❛r❣❡ ❛♥❞ ❝♦♠♣❧❡① s♣❛t✐❛❧ ❛♥❞ t❡♠♣♦r❛❧ ✈❛r✐❛t✐♦♥s✳ ■♥ ❡①♣❡r✐♠❡♥ts t❤❡ ❧❛♠✐♥❛r st❛t❡ ✐s ♦❢t❡♥ r❡♣❧❛❝❡❞ ❜② t❤❡ t✉r❜✉❧❡♥t ♦♥❡ ✐❢ t❤❡ ❘❡②♥♦❧❞s ♥✉♠❜❡r ✐s ✐♥❝r❡❛s❡❞✶✳ ❚❤✐s ♦❜s❡r✈❛t✐♦♥s ❝❛✉s❡ t❤❡ ❧♦♥❣ st❛♥❞✐♥❣ t✉r❜✉❧❡♥❝❡ ♣r♦❜❧❡♠ ✇❤✐❝❤ ✐♥ ❛ ❞❡✜♥✐t✐♦♥ ❜② ◆♦❡t❤❡r ✭✶✾✷✶✮ ❢♦r ♣✐♣❡ ✢♦✇ r❡❛❞s ❛s ❢♦❧❧♦✇s✿ ✧❯♥t❡r ❚✉r❜✉❧❡♥③♣r♦❜❧❡♠ ✈❡rst❡❤t ♠❛♥✱ ❛❧❧❣❡♠❡✐♥ ❣❡s♣r♦❝❤❡♥✱ ❞✐❡ ❋r❛❣❡✱ ✇❛r✉♠ ❞❡r ❣r✉♥❞sät③❧✐❝❤ ✐♠♠❡r ♠ö❣❧✐❝❤❡ P♦✐s❡✉✐❧❧❡s❝❤❡ ❩✉st❛♥❞ ♥✉r ❜❡❣r❡♥③t r❡❛❧✐s✐❡rt ✐st ✉♥❞ ❞❡♠ ❤②❞r❛✉❧✐s❝❤❡♥ ❩✉st❛♥❞ P❧❛t③ ♠❛❝❤t✳✧ ❚❤✉s✱ t❤❡ t✉r❜✉❧❡♥❝❡ ♣r♦❜❧❡♠ ✐s t❤❡ q✉❡st✐♦♥ ✇❤② t❤❡ ❧❛♠✐♥❛r st❛t❡ ✭✏P♦✐s❡✉✐❧❧❡s❝❤❡r ❩✉st❛♥❞✏✮ t❤❛t ❞♦❡s ❛❧✇❛②s ❡①✐st ✐s ♥♦t ❛❧✇❛②s r❡❛❧✐③❡❞ ❛♥❞ ❛t s♦♠❡ ♣♦✐♥t r❡♣❧❛❝❡❞ ❜② t❤❡ t✉r❜✉❧❡♥t st❛t❡ ✭✏❤②❞r❛✉❧✐s❝❤❡r ❩✉st❛♥❞✑ ✉s✐♥❣ ◆♦❡t❤❡r✬s ✇♦r❞s✮✳ ❋♦r ♠❛♥② ②❡❛rs✱ ✐t ✇❛s tr✐❡❞ t♦ s♦❧✈❡ t❤✐s q✉❡st✐♦♥ ❜② ❛♥ ❛♥❛❧②s✐s ♦❢ t❤❡ st❛❜✐❧✐t② ♦❢ t❤❡ ❧❛♠✐♥❛r st❛t❡ ♦❢ ❛ ✢♦✇ ✭s❡❡ ❊❝❦❡rt ✭✷✵✶✵✱ ✷✵✶✹✮ ❢♦r r❡✈✐❡✇s ♦♥ t❤❡ ❤✐st♦r✐❝❛❧ ❞❡✈❡❧♦♣♠❡♥t ♦❢ t❤❡ t✉r❜✉❧❡♥❝❡ ♣r♦❜❧❡♠ ❛♥❞ ❤②❞r♦❞②♥❛♠✐❝ st❛❜✐❧✐t② t❤❡♦r②✮✳ ❍♦✇❡✈❡r✱ ✐t t✉r♥❡❞ ♦✉t t❤❛t q✉✐t❡ ♦❢t❡♥ ❧✐♥❡❛r st❛❜✐❧✐t② t❤❡♦r② ❢❛✐❧s t♦ ❡①♣❧❛✐♥ t❤❡ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡✳ ❋♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇✱ t❤❡ ♣r❡ss✉r❡ ❞r✐✈❡♥ ✢♦✇ ❜❡t✇❡❡♥ t✇♦ ♣❛r❛❧❧❡❧ ♣❧❛t❡s✱ t✉r❜✉❧❡♥❝❡ ✐s ♦❜s❡r✈❡❞ ✐♥ ❡①♣❡r✐♠❡♥ts ❢♦r ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❢❛r ❜❡❧♦✇ t❤❡ ♦♥❡ ♣r❡❞✐❝t❡❞ ❜② ❧✐♥❡❛r st❛❜✐❧✐t② t❤❡♦r②✳ ❋♦r ♣✐♣❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✭t❤❡ ♣r❡ss✉r❡ ❞r✐✈❡♥ ✢♦✇ t❤r♦✉❣❤ ❛ ❝②❧✐♥❞r✐✲ ❝❛❧ ♣✐♣❡✮ ❛♥❞ ♣❧❛♥❡ ❈♦✉❡tt❡ ✢♦✇ ✭t❤❡ ✢♦✇ ❜❡t✇❡❡♥ t✇♦ ♣❧❛t❡s ♠♦✈✐♥❣ ✐♥ ♦♣♣♦s✐t❡ ❞✐r❡❝t✐♦♥s✮✱ ❡①♣❡r✐♠❡♥ts ❛♥❞ ❛❧s♦ ♥✉♠❡r✐❝❛❧ s✐♠✉❧❛t✐♦♥s s❤♦✇ ❧♦♥❣✲❧✐✈✐♥❣ t✉r❜✉❧❡♥❝❡ ❛❧t❤♦✉❣❤ t❤❡ ❧❛♠✐♥❛r st❛t❡ ✐s st❛❜❧❡ ❢♦r ❛❧❧ ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❛❝❝♦r❞✐♥❣ t♦ ❧✐♥❡❛r st❛❜✐❧✐t② t❤❡♦r②✳ ■t s❤♦✉❧❞ ❜❡ r❡✲ ♠❛r❦❡❞ t❤❛t t❤❡ ❢❛❝t t❤❛t t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡rs ♣r❡❞✐❝t❡❞ ❜② st❛❜✐❧✐t② t❤❡♦r② ❛r❡ ❤✐❣❤❡r t❤❛♥ t❤♦s❡ ✇❤❡r❡ t✉r❜✉❧❡♥❝❡ ❝❛♥ ❜❡ ♦❜s❡r✈❡❞ ❞♦❡s ♥♦t ✐♠♣❧② t❤❛t t❤❡ st❛❜✐❧✐t② ♦❢ t❤❡ ❧❛♠✐♥❛r st❛t❡ ✐s ♥♦t r❡❧❡✈❛♥t✳ ❲❤✐❧❡ ❢♦r ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❜❡❧♦✇ t❤❡ ❧✐♥❡❛r ✐♥st❛❜✐❧✐t② t✉r❜✉❧❡♥❝❡ ✐♥ ❣❡♥❡r❛❧ ✐s tr❛♥s✐❡♥t✱ ❛❜♦✈❡ t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❛ r❡t✉r♥ t♦ t❤❡ ❧❛♠✐♥❛r st❛t❡ ✐s ♥♦t ♣♦ss✐❜❧❡✳ ✶■❢ t❤❡ ❣❡♦♠❡tr✐❝ ♣❛r❛♠❡t❡rs ❛♥❞ t❤❡ ✈✐s❝♦s✐t② ❛r❡ ✜①❡❞✱ ❛♥ ✐♥❝r❡❛s❡ ♦❢ ❘❡ ✐s ❡q✉✐✈❛❧❡♥t t♦ ❛♥ ✐♥❝r❡❛s❡ ♦❢ t❤❡ ✈❡❧♦❝✐t②✳ ✶

(12)

✶✳ ■♥tr♦❞✉❝t✐♦♥ ❙✐♥❝❡ ❛❜♦✉t ❤❛❧❢ ❛ ❝❡♥t✉r② t❤❡r❡ ❛r❡ ❛♣♣r♦❛❝❤❡s t♦ ✉♥❞❡rst❛♥❞ t✉r❜✉❧❡♥❝❡ ✉s✐♥❣ ❞②♥❛♠✲ ✐❝❛❧ s②st❡♠s t❤❡♦r②✳ ❊s♣❡❝✐❛❧❧②✱ ❞✐✛❡r❡♥t r♦❛❞s t♦ t✉r❜✉❧❡♥t ❞②♥❛♠✐❝s ❤❛✈❡ ❜❡❡♥ ♣r♦♣♦s❡❞✱ ❡✳❣✳ t❤❡ ❘✉❡❧❧❡✲❚❛❦❡♥s s❝❡♥❛r✐♦ ✭❘✉❡❧❧❡ ❛♥❞ ❚❛❦❡♥s✱ ✶✾✼✶✮ ❛♥❞ t❤❡ ♣❡r✐♦❞ ❞♦✉❜❧✐♥❣ s❝❡♥❛r✐♦ ✭❋❡✐❣❡♥❜❛✉♠✱ ✶✾✼✽✮✳ ❋♦r s♦♠❡ s②st❡♠s t❤❛t s❤♦✇ t✉r❜✉❧❡♥t ❞②♥❛♠✐❝s ❡✈✐❞❡♥❝❡s ❢♦r t❤❡ ❞✐✛❡r✲ ❡♥t s❝❡♥❛r✐♦s ❡①✐st ✭s❡❡ ❡✳❣ ❊❝❦♠❛♥♥✱ ✶✾✽✶✱ ❢♦r ❛ ❝❧❛ss✐❝❛❧ r❡✈✐❡✇✮✳ ■♥ ❣❡♥❡r❛❧✱ t❤❡ ❡①♣❡r✐♠❡♥t❛❧ ❡✈✐❞❡♥❝❡s ✇❡r❡ ❢♦✉♥❞ ❢♦r s②st❡♠s t❤❛t s❤♦✇ s✉♣❡r❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ✭t✉r❜✉❧❡♥❝❡ ❢♦r ♣❛r❛♠❡t❡r ✈❛❧✉❡s ✇❡r❡ t❤❡ ❜❛s❡ st❛t❡ ✐s ✉♥st❛❜❧❡✮ ❛s ❡✳❣✳ ❘❛②❧❡✐❣❤✲❇é♥❛r❞ ❝♦♥✈❡❝t✐♦♥✳ ■♥ r❡❝❡♥t t✐♠❡s ❞②♥❛♠✐❝❛❧ s②st❡♠ t❤❡♦r② ❤❛s ❛❧s♦ ❝♦♥tr✐❜✉t❡❞ t♦ ❛♥ ✐♠♣r♦✈❡❞ ✉♥❞❡rst❛♥❞✲ ✐♥❣ ♦❢ t✉r❜✉❧❡♥❝❡ ✐♥ s②st❡♠s ✇❤❡r❡ t✉r❜✉❧❡♥❝❡ ✐s ♦❜s❡r✈❡❞ ❛❧t❤♦✉❣❤ t❤❡ ❧❛♠✐♥❛r st❛t❡ ✐s st❛❜❧❡✳ ❙✉❝❤ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ❝❛♥ ❜❡ ❢♦✉♥❞ ❡✳❣✳ ✐♥ ♣✐♣❡ ✢♦✇✱ ♣❧❛♥❡ ❈♦✉❡tt❡ ♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇✳ ◆✉♠❡r✐❝❛❧ s✐♠✉❧❛t✐♦♥s ✭❇r♦s❛✱ ✶✾✽✾❀ ❙❝❤♠✐❡❣❡❧ ❛♥❞ ❊❝❦❤❛r❞t✱ ✶✾✾✼❀ ❋❛✐sst ❛♥❞ ❊❝❦❤❛r❞t✱ ✷✵✵✹❀ ❲✐❧❧✐s ❛♥❞ ❑❡rs✇❡❧❧✱ ✷✵✵✼❀ ❙❝❤♥❡✐❞❡r ❛♥❞ ❊❝❦❤❛r❞t✱ ✷✵✵✽✮ ❛♥❞ ❡①♣❡r✐♠❡♥ts ✭❇♦tt✐♥ ❛♥❞ ❈❤❛t❡✱ ✶✾✾✽❀ P❡✐①✐♥❤♦ ❛♥❞ ▼✉❧❧✐♥✱ ✷✵✵✻❀ ❍♦❢ ❡t ❛❧✳✱ ✷✵✵✻✱ ✷✵✵✽✮ ♣r♦✈✐❞❡❞ ❡✈✐❞❡♥❝❡s t❤❛t t✉r✲ ❜✉❧❡♥❝❡ ✐♥ s✉❜❝r✐t✐❝❛❧ s②st❡♠s ✐s tr❛♥s✐❡♥t ❛♥❞ t❤✉s ✐t ❝♦rr❡s♣♦♥❞s t♦ ❛ ❝❤❛♦t✐❝ s❛❞❞❧❡ r❛t❤❡r t❤❛♥ ❛♥ ❛ttr❛❝t♦r✳ ❚❤✐s s❛❞❞❧❡ ✐s ❢♦r♠❡❞ ❜② t❤r❡❡✲❞✐♠❡♥s✐♦♥❛❧ ❡①❛❝t s♦❧✉t✐♦♥s ♦❢ t❤❡ ◆❛✈✐❡r✲ ❙t♦❦❡s ❡q✉❛t✐♦♥s ❛♥❞ ❤♦♠♦❝❧✐♥✐❝ ❛♥❞ ❤❡t❡r❡♦❝❧✐♥✐❝ ❝♦♥♥❡❝t✐♦♥s ❜❡t✇❡❡♥ t❤❡♠✳ ❊①❛❝t s♦❧✉t✐♦♥s✱ ✇❤✐❝❤ ❛♣♣❡❛r ✐♥ ❢♦r♠ ♦❢ ❡q✉✐❧✐❜r✐❛✱ tr❛✈❡❧✐♥❣ ✇❛✈❡s✱ ♦r ♣❡r✐♦❞✐❝ ♦r❜✐ts✱ ❝❛♥ ❜❡ ❢♦✉♥❞ ❜② ✉s✲ ✐♥❣ s♣❡❝✐❛❧✲t❛✐❧♦r❡❞ ♥✉♠❡r✐❝❛❧ ♠❡t❤♦❞s✳ ❯♣ t♦ ♥♦✇ ❛ ♠✉❧t✐t✉❞❡ ♦❢ ❡①❛❝t s♦❧✉t✐♦♥s ❤❛s ❜❡❡♥ ❢♦✉♥❞ ❢♦r ❞✐✛❡r❡♥t s✉❜❝r✐t✐❝❛❧ s②st❡♠s ❛s ♣❧❛♥❡ ❈♦✉❡tt❡ ✢♦✇ ✭❡✳❣✳ ◆❛❣❛t❛✱ ✶✾✾✵❀ ❈❧❡✈❡r ❛♥❞ ❇✉ss❡✱ ✶✾✾✷❀ ❙❝❤♠✐❡❣❡❧✱ ✶✾✾✾❀ ●✐❜s♦♥ ❡t ❛❧✳✱ ✷✵✵✾✮✱ ♣✐♣❡ ✢♦✇ ✭❡✳❣✳ ❋❛✐sst ❛♥❞ ❊❝❦❤❛r❞t✱ ✷✵✵✸❜❀ ❲❡❞✐♥ ❛♥❞ ❑❡rs✇❡❧❧✱ ✷✵✵✹❀ Pr✐♥❣❧❡ ❛♥❞ ❑❡rs✇❡❧❧✱ ✷✵✵✼❀ Pr✐♥❣❧❡ ❡t ❛❧✳✱ ✷✵✵✾✮✱ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✭❊❤r❡♥st❡✐♥ ❛♥❞ ❑♦❝❤✱ ✶✾✾✶❀ ❲❛❧❡✛❡✱ ✷✵✵✶❀ ❩❛♠♠❡rt✱ ✷✵✶✶❀ ●✐❜s♦♥ ❛♥❞ ❇r❛♥❞✱ ✷✵✶✹✮ ♦r ❝♦✉♥t❡r✲r♦t❛t✐♥❣ ❚❛②❧♦r✲❈♦✉❡tt❡ ✢♦✇ ✭❉❡❣✉❝❤✐ ❡t ❛❧✳✱ ✷✵✶✹✮✳ ■♥ ❛❞❞✐t✐♦♥ t♦ t❤❡✐r ♥✉♠❡r✐❝❛❧ ✐❞❡♥t✐✜❝❛t✐♦♥✱ ✐t ✇❛s ❛❧s♦ ♣♦ss✐❜❧❡ t♦ ✜♥❞ ❡✈✐❞❡♥❝❡s ❢♦r ❡①❛❝t s♦❧✉t✐♦♥s ✐♥ ❡①♣❡r✐♠❡♥ts ✭❍♦❢ ❡t ❛❧✳✱ ✷✵✵✹✮✳ ❘❡❝❡♥t❧②✱ ✐t ✇❛s s❤♦✇♥ ❤♦✇ ❛ ❜✐❢✉r❝❛t✐♦♥ ❝❛s❝❛❞❡ st❛rt✐♥❣ ❛t ❛♥ ❡①❛❝t s♦❧✉t✐♦♥ ❝❛♥ ❢♦r♠ ❛ ❝❤❛♦t✐❝ s❛❞❞❧❡ ✭❑r❡✐❧♦s ❛♥❞ ❊❝❦❤❛r❞t✱ ✷✵✶✷❀ ❆✈✐❧❛ ❡t ❛❧✳✱ ✷✵✶✸✮ ✇❤✐❝❤ ✇❛s ❛ ❧❛r❣❡ st❡♣ t♦✇❛r❞s t❤❡ ✉♥❞❡rst❛♥❞✐♥❣ ♦❢ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡✳ ❚❤❡ ♠❛❥♦r✐t② ♦❢ t❤❡ ❡①❛❝t s♦❧✉t✐♦♥s ✐❞❡♥t✐✜❡❞ ✉♣ t♦ ♥♦✇ ❛r❡ s♣❛t✐❛❧❧② ❡①t❡♥❞❡❞✳ ❍♦✇❡✈❡r✱ ✐t ✐s ❦♥♦✇♥ s✐♥❝❡ t❤❡ ❡①♣❡r✐♠❡♥ts ♦❢ ❖s❜♦✉r♥❡ ❘❡②♥♦❧❞s ✭❘❡②♥♦❧❞s✱ ✶✽✽✸✮✱ t❤❛t ✐♥ ♠❛♥② s②st❡♠s s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ✐s ❧♦❝❛❧✐③❡❞ ♦r s♣❛t✐❛❧❧② ✐♥t❡r♠✐tt❡♥t ❝❧♦s❡ t♦ ✐ts ♦♥s❡t✳ ❚✉r❜✉❧❡♥❝❡ ❝❛♥ ❛♣♣❡❛r ✐♥ ❧♦❝❛❧✐③❡❞ ❢♦r♠ ❛s ♣✉✛s ♦r s❧✉❣s ✐♥ ♣✐♣❡ ✢♦✇ ✭❲②❣♥❛♥s❦✐ ❛♥❞ ❈❤❛♠♣❛❣♥❡✱ ✶✾✼✸❀ ❲②❣♥❛♥s❦✐ ❡t ❛❧✳✱ ✶✾✼✺✮ ♦r ❛s s♣♦ts ✐♥ ♣❧❛♥❡ ❈♦✉❡tt❡ ❛♥❞ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✭❈❛r❧s♦♥ ❡t ❛❧✳✱ ✶✾✽✷❀ ❍❡♥♥✐♥❣s♦♥ ❡t ❛❧✳✱ ✶✾✽✼❀ ▲❡♠♦✉❧t ❡t ❛❧✳✱ ✷✵✶✸✮✳ ❋✉rt❤❡r♠♦r❡✱ t❤❡ ❢♦r♠❛t✐♦♥ ♦❢ ❝♦♠♣❧❡① ♣❛tt❡r♥s ♦❢ ❧❛♠✐♥❛r ❛♥❞ t✉r❜✉❧❡♥t r❡❣✐♦♥s ❝❛♥ ❜❡ ♦❜s❡r✈❡❞ ✭❇❛r❦❧❡② ❛♥❞ ❚✉❝❦❡r♠❛♥✱ ✷✵✵✺❀ ❚✉❝❦❡r♠❛♥ ❡t ❛❧✳✱ ✷✵✶✹❀ ❉✉❣✉❡t ❡t ❛❧✳✱ ✷✵✶✵❛❀ ❇r❡t❤♦✉✇❡r ❡t ❛❧✳✱ ✷✵✶✷❀ ❆✈✐❧❛ ❛♥❞ ❍♦❢✱ ✷✵✶✸✮✳ ■♥ ♦r❞❡r t♦ ✉♥❞❡rst❛♥❞ t❤✐s ♦❜s❡r✈❛t✐♦♥s ✉s✐♥❣ t❤❡ ❢r❛♠❡✇♦r❦ ♦❢ ❞②♥❛♠✐❝❛❧ s②st❡♠s t❤❡♦r②✱ t❤❡r❡ ✐s ❛ ♥❡❡❞ t♦ ✜♥❞ ❧♦❝❛❧✐③❡❞ ❡①❛❝t s♦❧✉t✐♦♥s ❜❡❝❛✉s❡ t❤❡② ❛r❡ ❡①♣❡❝t❡❞ t♦ ❢♦r♠ ❛ s❦❡❧❡t♦♥ ❢♦r s♣❛t✐❛❧❧② ❧♦❝❛❧✐③❡❞ t✉r❜✉❧❡♥❝❡✳ ❙♦♠❡ ♦❢ t❤❡ ❦♥♦✇♥ ❡①❛❝t s♦❧✉t✐♦♥s s❤♦✇ s♣❛t✐❛❧ ❧♦❝❛❧✐③❛t✐♦♥✳ ❋♦r ♣❧❛♥❡ ❈♦✉❡tt❡ ✢♦✇✱ s❡✈✲ ❡r❛❧ s♣❛♥✇✐s❡ ❧♦❝❛❧✐③❡❞ s♦❧✉t✐♦♥s ❤❛✈❡ ❜❡❡♥ ❢♦✉♥❞ ✭❙❝❤♥❡✐❞❡r ❡t ❛❧✳✱ ✷✵✶✵❜✱❛❀ ●✐❜s♦♥ ❛♥❞ ❇r❛♥❞✱ ✷✵✶✹✮ ❛♥❞ ♦♥❡ ❞♦✉❜❧②✲❧♦❝❛❧✐③❡❞ ❡q✉✐❧✐❜r✐✉♠ s♦❧✉t✐♦♥ ✐s ❦♥♦✇♥ ✭❇r❛♥❞ ❛♥❞ ●✐❜s♦♥✱ ✷✵✶✹✮✳ ▲♦✲ ❝❛❧✐③❡❞ s♦❧✉t✐♦♥s ♦❢ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ❛♥❞ ♣✐♣❡ ✢♦✇ ✇❡r❡ ❢♦✉♥❞ ❜② ❏✐♠é♥❡③ ✭✶✾✾✵✮✱ ❆✈✐❧❛ ❡t ❛❧✳ ✭✷✵✶✸✮✱ ❈❤❛♥tr② ❡t ❛❧✳ ✭✷✵✶✹✮ ❛♥❞ ●✐❜s♦♥ ❛♥❞ ❇r❛♥❞ ✭✷✵✶✹✮✳ ❋♦r t❤❡ ❧♦❝❛❧✐③❡❞ ♣❡r✐♦❞✐❝ ♦r❜✐t ✐♥ ♣✐♣❡ ✢♦✇ ❢♦✉♥❞ ❜② ❆✈✐❧❛ ❡t ❛❧✳ ✭✷✵✶✸✮✱ ✐t ✇❛s ❡✈❡♥ ♣♦ss✐❜❧❡ t♦ s❤♦✇ t❤❛t ❛ ❜✐❢✉r❝❛t✐♦♥ ❝❛s❝❛❞❡ st❛rt✐♥❣ ❛t ✐ts ✉♣♣❡r ❜r❛♥❝❤ ❝r❡❛t❡s ❛ ❝❤❛♦t✐❝ s❛❞❞❧❡✳ ❍♦✇❡✈❡r✱ ❞❡s♣✐t❡ t❤❡ ❧❛r❣❡ ♣r♦❣r❡ss ✇✐t❤✐♥ t❤❡ ❧❛st ②❡❛rs✱ t❤❡ ✇❛② t♦✇❛r❞s ❛♥ ❡①t❡♥s✐✈❡ ✉♥❞❡rst❛♥❞✐♥❣ ♦❢ t❤❡ s♣❛t✐♦✲t❡♠♣♦r❛❧ str✉❝t✉r❡s ✷

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♦❢ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ✐s st✐❧❧ ❧♦♥❣✳ ❇② st✉❞②✐♥❣ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ t❤✐s t❤❡s✐s ❝♦♥tr✐❜✉t❡s t♦ t❤❡ ♣r♦❣r❡ss ✐♥ ✉♥❞❡rst❛♥❞✐♥❣ ♦❢ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ✐♥ t❤❡ ❢r❛♠❡✇♦r❦ ♦❢ ❞②♥❛♠✐❝❛❧ s②st❡♠s t❤❡♦r②✳ ❆s ❛❧r❡❛❞② ♠❡♥t✐♦♥❡❞✱ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ s❤♦✇s t✉r❜✉❧❡♥❝❡ ❢♦r ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❢❛r ❜❡❧♦✇ t❤❡ ♦♥❡ ✇❤❡r❡ ✐ts ❧❛♠✐♥❛r st❛t❡ ❜❡❝♦♠❡s ✉♥st❛❜❧❡✳ ❱❛r✐♦✉s ❡①❛❝t s♦❧✉t✐♦♥s ❛r❡ ✐❞❡♥t✐✜❡❞ ❢♦r t❤✐s ✢♦✇ t❤❛t ❛r❡ r❡❧❛t❡❞ t♦ t❤❡ tr❛♥s✐t✐♦♥ t♦ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡✳ ❚❤❡ ❢♦r♠❛t✐♦♥ ♦❢ t❤❡ ❝❤❛♦t✐❝ s❛❞❞❧❡ ✐s ✐♥✈❡st✐❣❛t❡❞ ❛♥❞ ❛ ♠❡❝❤❛♥✐s♠ ❧❡❛❞✐♥❣ t♦ ❛ ❞❡♥s❡r ❝♦✈❡r❛❣❡ ♦❢ t❤❡ st❛t❡ s♣❛❝❡ ✐s ✐❞❡♥t✐✜❡❞✳ ❋✉rt❤❡r♠♦r❡✱ ✐t ✐s ✐♥✈❡st✐❣❛t❡❞ ❤♦✇ t❤❡ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ❛♥❞ ✐ts ❝♦rr❡s♣♦♥❞✐♥❣ ❡①❛❝t s♦❧✉t✐♦♥s ❛r❡ ❝♦♥♥❡❝t❡❞ t♦ t❤❡ ✐♥st❛❜✐❧✐t② ♦❢ t❤❡ ❧❛♠✐♥❛r st❛t❡✳ ❲✐t❤ t❤❡ ❞✐st❛♥t ❣♦❛❧ t♦ ✉♥❞❡rst❛♥❞ t❤❡ ❢♦r♠❛t✐♦♥ ♦❢ ❧♦❝❛❧✐③❡❞ t✉r❜✉❧❡♥❝❡✱ s♣❛t✐❛❧❧② ❧♦❝❛❧✐③❡❞ ❡①❛❝t s♦❧✉t✐♦♥s ❛r❡ st✉❞✐❡❞✳ ❚❤❡ s❡❝♦♥❞ s②st❡♠ st✉❞✐❡❞ ✐♥ t❤✐s t❤❡s✐s ✐s t❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ♦✈❡r ❛ ❤❡❛t❡❞ ♣❧❛t❡✳ ▼♦t✐✈❛t❡❞ ❜② t❤❡ s✉❝❝❡ss ♦❢ t❤❡ ❛♣♣❧✐❝❛t✐♦♥ ♦❢ ♠❡t❤♦❞s ❢r♦♠ ❞②♥❛♠✐❝❛❧ s②st❡♠s t❤❡♦r② t♦ t❤❡ tr❛♥s✐t✐♦♥ t♦ t✉r❜✉❧❡♥❝❡ ✐♥ s❤❡❛r ✢♦✇s✱ ✐t ✐s ❛ s❡❧❢✲❡✈✐❞❡♥t ✐❞❡❛ t♦ ❛♣♣❧② t❤❡ ♠❡t❤♦❞s t♦ r❡❧❛t❡❞ ♣r♦❜❧❡♠s✳ ■♥ t❤❡r♠❛❧ ❜♦✉♥❞❛r② ❧❛②❡rs t❤❛t ❛♣♣❡❛r ✐♥ ❛ ✢♦✇ ♦✈❡r ❛ ❤❡❛t❡❞ s✉r❢❛❝❡✱ s♣❡❝✐❛❧ ✢♦✇ ♣❛tt❡r♥s✱ s♦✲❝❛❧❧❡❞ ♣❧✉♠❡s✱ ❛r❡ ♦❢ ❛❝❝❡♥t✉❛t❡❞ ✐♠♣♦rt❛♥❝❡ ❢♦r t❤❡ ❞②♥❛♠✐❝s ❛♥❞ t❤❡ ❤❡❛t tr❛♥s♣♦rt✳ ❚♦ st✉❞② t❤❡ ❞②♥❛♠✐❝s ✐♥s✐❞❡ ♦❢ t❤❡r♠❛❧ ❜♦✉♥❞❛r② ❧❛②❡rs ❛s ✇❡❧❧ ❛s t❤❡ t❤❡r♠❛❧ ♣❧✉♠❡s t❤❛t ❛♣♣❡❛r t❤❡r❡✐♥✱ t❤❡ ❛s②♠♣t♦t✐❝ s✉❝t✐♦♥ ❜♦✉♥❞❛r② ❧❛②❡r ♦✈❡r ❛ ❤❡❛t❡❞ ♣❧❛t❡ ✐s st✉❞✐❡❞ ✐♥ t❤✐s t❤❡s✐s ❛s ❛ ♠♦❞❡❧ s②st❡♠ ❢♦r ❛ r❡❛❧ t❤❡r♠❛❧ ❜♦✉♥❞❛r② ❧❛②❡r✳ ❋♦r t❤✐s s②st❡♠✱ t❤❡ st❛❜✐❧✐t② ♦❢ t❤❡ ❜❛s❡ ✢♦✇ ❛♥❞✱ ❛♥❛❧♦❣♦✉s t♦ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇✱ t❤❡ ♦r✐❣✐♥ ♦❢ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ✐s st✉❞✐❡❞✳ ❋✉rt❤❡r♠♦r❡✱ ❛s ❢♦r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇✱ ❧♦❝❛❧✐③❡❞ ❡①❛❝t s♦❧✉t✐♦♥s ❛♥❞ ♠❡❝❤❛♥✐s♠s ❧❡❛❞✐♥❣ t♦ t❤❡✐r ❢♦r♠❛t✐♦♥ ❛r❡ ✐♥✈❡st✐❣❛t❡❞✳ ✸

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P❛rt ■

P❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇

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❈❤❛♣t❡r ✷

❆♥ ✐♥tr♦❞✉❝t✐♦♥ t♦ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡

✢♦✇

P❧❛♥❡ P♦✐s❡✉✐❧❧❡ ✢♦✇ ✭PP❋✮ ✐s t❤❡ ♣r❡ss✉r❡ ❞r✐✈❡♥ ✢♦✇ ❜❡t✇❡❡♥ t✇♦ ✐♥✜♥✐t❡❧② ❡①t❡♥❞❡❞ ♣❛r❛❧❧❡❧ ♣❧❛t❡s✳ ❚❤❡ st✉❞② ♦❢ PP❋ ✐s ♦❢ ✐♥t❡r❡st ❜❡❝❛✉s❡ ♦❢ ✐ts ❛♥❛❧♦❣② t♦ ♣✐♣❡ ❛♥❞ ❞✉❝t ✢♦✇s✱ ✇❤✐❝❤ ❤❛✈❡ ❛♥ ❡♥♦r♠♦✉s t❡❝❤♥✐❝❛❧ r❡❧❡✈❛♥❝❡✳ ❚❤❡ ✢♦✇ ✐s ❣♦✈❡r♥❡❞ ❜② t❤❡ ◆❛✈✐❡r✲❙t♦❦❡s ❡q✉❛t✐♦♥s

∂t~˜utot+ (~˜utot· ∇)~˜utot = −∇˜ptot+ ν∆~˜utot ✭✷✳✶✮

t♦❣❡t❤❡r ✇✐t❤ t❤❡ ❝♦♥t✐♥✉✐t② ❡q✉❛t✐♦♥

∇ · ~˜utot = 0. ✭✷✳✷✮

■♥ t❤❡s❡ ❡q✉❛t✐♦♥s ~˜utot ✐s t❤❡ ✈❡❧♦❝✐t② ✜❡❧❞✱ ˜ptot ✐s t❤❡ ♣r❡ss✉r❡ ♠♦❞✐✜❡❞ ❜② ❞❡♥s✐t② ❛♥❞ ν ✐s t❤❡

❦✐♥❡♠❛t✐❝ ✈✐s❝♦s✐t②✳ ❯s✐♥❣ t❤❡ ❦✐♥❡♠❛t✐❝ ✈✐s❝♦s✐t②✱ t❤❡ ❤❛❧❢ ❞♦♠❛✐♥ ✇✐❞t❤ d ❛♥❞ ❛ ❝❤❛r❛❝t❡r✐st✐❝ ✈❡❧♦❝✐t② s❝❛❧❡✱ ❢♦r ✇❤✐❝❤ ♠♦st ❛♣♣r♦♣r✐❛t❡❧② t❤❡ ♠❛①✐♠✉♠ ♦❢ t❤❡ ❧❛♠✐♥❛r ♣r♦✜❧❡ U0 ✐s ❝❤♦s❡♥✱ ❛ ❘❡②♥♦❧❞s ♥✉♠❜❡r✱ Re = U0d ν , ✭✷✳✸✮ ❝❛♥ ❜❡ ❞❡✜♥❡❞ ❛♥❞ t❤❡ ❡q✉❛t✐♦♥ ❝❛♥ ❜❡ ♠❛❞❡ ❞✐♠❡♥s✐♦♥❧❡ss✿ ∂t~utot+ (~utot· ∇)~utot = −∇ptot+ 1

Re∆~utot, ✭✷✳✹✮ ∇ · ~utot = 0. ✭✷✳✺✮ ■❢ t❤❡ ✉s❡❞ ✈❡❧♦❝✐t② s❝❛❧❡s ✐s t❤❡ ♦♥❡ ♦❢ t❤❡ ❧❛♠✐♥❛r ♣r♦✜❧❡✱ t❤✐s ♣r♦✜❧❡ ❜❡❝♦♠❡s ~u0= (U (y), 0, 0) ✇✐t❤ U(y) = (1 − y2). ✭✷✳✻✮ ❚❤❡ ❢✉❧❧ ✢♦✇ ✜❡❧❞ ~utot ❝❛♥ ❜❡ ❞❡❝♦♠♣♦s❡❞ ✐♥t♦ t❤❡ ❧❛♠✐♥❛r ✢♦✇ ❛♥❞ ❞❡✈✐❛t✐♦♥s ❢r♦♠ ✐t ~utot= ~u0+ ~u. ✭✷✳✼✮ ✼

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✷✳ ❆♥ ✐♥tr♦❞✉❝t✐♦♥ t♦ ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ❢❧♦✇ ■♥ t❤❡ ❢♦❧❧♦✇✐♥❣✱ ✇❤❡♥ ✈✐s✉❛❧✐③❛t✐♦♥s ♦❢ ✢♦✇ ✜❡❧❞s ❛r❡ s❤♦✇♥ ♦r ❡♥❡r❣✐❡s ♦❢ ❛ ✢♦✇ ✜❡❧❞ ❛r❡ ♣❧♦tt❡❞✱ ♦♥❧② t❤❡ ✢♦✇ ✜❡❧❞ ~u = (u, v, w) ♦❢ ❞❡✈✐❛t✐♦♥s ❢r♦♠ t❤❡ ❧❛♠✐♥❛r ♣r♦✜❧❡ ✐s ✉s❡❞✳ ❆ ❝♦♦r❞✐♥❛t❡ s②st❡♠ ✐s ❝❤♦s❡♥ ✐♥ ✇❤✐❝❤ x ♣♦✐♥ts ✐♥ str❡❛♠✇✐s❡✱ y ✐♥ ✇❛❧❧✲♥♦r♠❛❧ ❛♥❞ z ✐♥ s♣❛♥✇✐s❡ ❞✐r❡❝t✐♦♥✳ ❆ s❦❡t❝❤ ♦❢ t❤❡ ❣❡♦♠❡tr② t❤❛t ❛❧s♦ s❤♦✇s t❤❡ r❡❧❡✈❛♥t ❧❡♥❣t❤ s❝❛❧❡s ❛♥❞ t❤❡ ❝♦♥✈❡♥t✐♦♥ ✉s❡❞ ❢♦r t❤❡ ❝♦♦r❞✐♥❛t❡ s②st❡♠ ✐s ❣✐✈❡♥ ✐♥ ✜❣✉r❡ ✷✳✶❛✳ ❚❤❡ ✢♦✇ ❝❛♥ ❜❡ ❞r✐✈❡♥ ✐♥ ❞✐✛❡r❡♥t ✇❛②s✳ ■♥ ♠♦st ❝❛s❡s ✐t ✐s ❞r✐✈❡♥ ❜② ❛ ❝♦♥st❛♥t ♣r❡ss✉r❡ ❣r❛❞✐❡♥t ♦r ❛ ❝♦♥st❛♥t ✢♦✇ r❛t❡✱ ❜✉t ✐♥ ♣r✐♥❝✐♣❧❡ ♦t❤❡r ❝♦♥str❛✐♥ts✱ ❡✳❣✳ ❝♦♥st❛♥t ❡♥❡r❣② ✐♥♣✉t ✭❨♦s✉❦❡ ❡t ❛❧✳✱ ✷✵✶✹✮✱ ❛r❡ ♣♦ss✐❜❧❡✳ ■♥ ❝❛s❡ ♦❢ ❝♦♥st❛♥t ✢♦✇ r❛t❡ t❤❡ ❜✉❧❦ ✈❡❧♦❝✐t② UB= 1 2Lz Z 1 −1 Z Lz 0 Z Lx 0 u dxdydz ♠✉st ❜❡ ✜①❡❞ ❛t 2/3 t♦ ♦❜t❛✐♥ ❛ ❧❛♠✐♥❛r ♣r♦✜❧❡ ✇✐t❤ ❛ ❝❡♥t❡r✲❧✐♥❡ ✈❡❧♦❝✐t② ♦❢ 1✳ ■❢ t❤❡ ♣r❡ss✉r❡ ❣r❛❞✐❡♥t ✐s ✜①❡❞ t❤✐s ❝❡♥t❡r✲❧✐♥❡ ✈❡❧♦❝✐t② ✐s ♦❜t❛✐♥❡❞ ✇✐t❤ ❛ ♣r❡ss✉r❡ ❣r❛❞✐❡♥t ♦❢ −2/Re✳ ■❢ ✇❡ ❤❛✈❡ ❛ s♦❧✉t✐♦♥ ♦❢ t❤❡ ◆❛✈✐❡r✲❙t♦❦❡s ❡q✉❛t✐♦♥s ❢♦r PP❋ ✭♥♦t ♥❡❝❡ss❛r✐❧② ❛♥ ❡q✉✐❧✐❜r✐✉♠ s♦❧✉t✐♦♥✮✱ ✐t ❤❛s ❛ ❝❤❛r❛❝t❡r✐st✐❝ ❜✉❧❦ ✈❡❧♦❝✐t② ❛♥❞ ❛ ❝❤❛r❛❝t❡r✐st✐❝ ♣r❡ss✉r❡ ❣r❛❞✐❡♥t✳ ❇② ❝♦♠✲ ♣❛r✐♥❣ ✐ts ❜✉❧❦ ✈❡❧♦❝✐t② ✇✐t❤ ❛ ❧❛♠✐♥❛r ♣r♦✜❧❡ ✇✐t❤ t❤❡ s❛♠❡ ✈❛❧✉❡ ♦❢ UB✱ ❛ ❘❡②♥♦❧❞s ♥✉♠❜❡r ReB ❝❛♥ ❜❡ ❛ss✐❣♥❡❞ t♦ t❤✐s s♦❧✉t✐♦♥✳ ❖♥ t❤❡ ♦t❤❡r ❤❛♥❞✱ ❜② ❝♦♠♣❛r✐♥❣ t❤❡ ♣r❡ss✉r❡ ❣r❛❞✐❡♥t t♦ t❤❡ ♦♥❡ ❝♦rr❡s♣♦♥❞✐♥❣ t♦ ❛ ❧❛♠✐♥❛r ♣r♦✜❧❡✱ ❛ ♣r❡ss✉r❡ ❜❛s❡❞ ❘❡②♥♦❧❞s ♥✉♠❜❡r ReP ❝❛♥ ❜❡ ❛ss✐❣♥❡❞✳ ❚❤❡ ♣r❡ss✉r❡ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❝❛♥ ❛❧s♦ ❜❡ ♦❜t❛✐♥❡❞ ❜② s✐♠♣❧② ♠❛❦✐♥❣ t❤❡ ♣r❡ss✉r❡ ❣r❛❞✐❡♥t ❞✐♠❡♥s✐♦♥❧❡ss✳ ❋♦r t❤❡ ❧❛♠✐♥❛r s♦❧✉t✐♦♥✱ ReB ❛♥❞ ReP ❛r❡ ✐❞❡♥t✐❝❛❧✱ ❜✉t ✐♥ ❛❧❧ ♦t❤❡r ❝❛s❡s t❤❡② ❞✐✛❡r✳ ❙✐♥❝❡ ReB❛♥❞ ReP ❛r❡ ❜❛s❡❞ ♦♥ t❤❡ ❜✉❧❦ ✈❡❧♦❝✐t② ❛♥❞ t❤❡ ♣r❡ss✉r❡ ❣r❛❞✐❡♥t✱ ReB ✐s ✜①❡❞ ✐♥ t❤❡ ❝❛s❡ ♦❢ ❝♦♥st❛♥t ✢♦✇ r❛t❡ ❛♥❞ ReP ✐s ❝♦♥st❛♥t ✐❢ t❤❡ ♣r❡ss✉r❡ ❣r❛❞✐❡♥t ✐s ✜①❡❞✳ ❚♦❞❛② ✐t ✐s ❛ ✇❡❧❧ ❦♥♦✇♥ ❢❛❝t t❤❛t t❤❡ ❧❛♠✐♥❛r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ♣r♦✜❧❡ ❜❡❝♦♠❡s ✉♥st❛❜❧❡ ♥❡❛r Recrit = 5772.22✭❖rs③❛❣✱ ✶✾✼✶✮✱ ❜✉t ❢♦r ❛ ❧♦♥❣ t✐♠❡ st❛❜✐❧✐t② ♦❢ t❤❡ PP❋ ♣r♦✜❧❡ ❛♥❞ ❡s♣❡❝✐❛❧❧② t❤❡ ❡①❛❝t ✈❛❧✉❡ ♦❢ t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❛♥❞ ✇❛✈❡❧❡♥❣t❤s ❤❛❞ ❜❡❡♥ ✉♥❝❧❡❛r ❛♥❞ s✉❜❥❡❝t ♦❢ ♠❛♥② st✉❞✐❡s ✭s❡❡ ❡✳❣✳ ❍❡✐s❡♥❜❡r❣✱ ✶✾✷✹❀ ▲✐♥✱ ✶✾✹✹❀ ❚❤♦♠❛s✱ ✶✾✺✸✮✳ ❍♦✇❡✈❡r✱ t❤❡ r❡s✉❧ts ❢r♦♠ ❧✐♥❡❛r st❛❜✐❧✐t② t❤❡♦r② ❢❛✐❧ t♦ ♣r❡❞✐❝t t❤❡ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡ ✐♥ PP❋✳ ❊①♣❡r✐♠❡♥t❛❧ ♦❜s❡r✈❛t✐♦♥s ❛s ✇❡❧❧ ❛s ♥✉♠❡r✐❝❛❧ st✉❞✐❡s s❤♦✇ t❤❛t t❤❡ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡ ❧✐❡s s♦♠❡✇❤❡r❡ ❛r♦✉♥❞ ReB = 1000✭s❡❡ ❡✳❣✳ ❈❛r❧s♦♥ ❡t ❛❧✳✱ ✶✾✽✷❀ ❚✉❝❦❡r♠❛♥ ❡t ❛❧✳✱ ✷✵✶✹✮ ❛♥❞ t❤❡r❡❢♦r❡ ❢❛r ❜❡❧♦✇ t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❢♦r t❤❡ ❧✐♥❡❛r ✐♥st❛❜✐❧✐t② ♦❢ t❤❡ ❧❛♠✐♥❛r ♣r♦✜❧❡✳ ❆❧r❡❛❞② ❍❡✐s❡♥❜❡r❣✱ ✇❤♦ ✐♥✈❡st✐❣❛t❡❞ t❤❡ st❛❜✐❧✐t② ♦❢ t❤❡ ❧❛♠✐♥❛r ♣❧❛♥❡ P♦✐s❡✉✐❧❧❡ ♣r♦✜❧❡ ✐♥ ✶✾✷✹✱ ❞♦✉❜t❡❞ t❤❛t t❤❡ ❧✐♥❡❛r st❛❜✐❧✐t② ♦❢ t❤❡ ❧❛♠✐♥❛r st❛t❡ ✐s ❛❜❧❡ t♦ ❡①♣❧❛✐♥ t❤❡ t✉r❜✉❧❡♥❝❡ ♦❜s❡r✈❡❞ ✐♥ PP❋✳ ❍❡ r❡♠❛r❦❡❞ ✭❍❡✐s❡♥❜❡r❣✱ ✶✾✷✹✮✿ ✧❱♦♠ ❙t❛♥❞♣✉♥❦t ❞❡r ❚❤❡♦r✐❡ ❛✉s ♠üss❡♥ ✇✐r ❛❧s♦ ❞❛r❛✉❢ ❣❡❢❛ÿt s❡✐♥✱ ✉♥t❡r ❯♠✲ stä♥❞❡♥ ③✇❡✐ ❦r✐t✐s❝❤❡ ❘❡②♥♦❧❞ss❝❤❡ ❩❛❤❧❡♥ ③✉ ✜♥❞❡♥✱ ❞✐❡ ❡✐♥❡ ❡♥ts♣r❡❝❤❡♥❞ ❞❡♠ ❇❡❣✐♥♥ ❞❡r ❚✉r❜✉❧❡♥③✱ ❞✐❡ ❛♥❞❡r❡ ❡♥ts♣r❡❝❤❡♥❞ ❞❡♠ ◆✐❡❞❡r❜r❡❝❤❡♥ ❞❡r ▲❛♠✐♥❛r❜❡✲ ✇❡❣✉♥❣✳✧ ❍❡ ❞✐st✐♥❣✉✐s❤❡s t✇♦ ❞✐✛❡r❡♥t ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❢♦r t❤❡ ✢♦✇✳ ❚❤❡ ✜rst ✐s t❤❡ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❢♦r t❤❡ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡ ❛♥❞ t❤❡ s❡❝♦♥❞ ✐s t❤❡ ♦♥❡ ✇❤❡r❡ t❤❡ ❧❛♠✐♥❛r ✢♦✇ ❜❡❝♦♠❡s ✉♥st❛❜❧❡✳ ■♥❞❡❡❞✱ t❤❡ r❡s✉❧ts ♦❢ t❤❡ st❛❜✐❧✐t② ❛♥❛❧②s✐s ❝♦♥✜r♠❡❞ ❤✐s ❝♦♥❥❡❝t✉r❡ t❤❛t t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❢♦r ❧✐♥❡❛r ✐♥st❛❜✐❧✐t② ✐s ♥♦t t❤❡ ♦♥❡ ❢♦r t❤❡ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡✳ ❙✐♥❝❡ t❤❡ ❜✐❢✉r❝❛t✐♦♥ ♦❢ t❤❡ ❧❛♠✐♥❛r ♣r♦✜❧❡ ✐s s✉❜❝r✐t✐❝❛❧✱ ❛♥ ✐❞❡❛ ❤♦✇ t♦ ♦❜t❛✐♥ t❤❡ s❡❝♦♥❞ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❝♦✉❧❞ ❜❡ t♦ ❢♦❧❧♦✇ t❤❡ ❜✐❢✉r❝❛t✐♥❣ s♦❧✉t✐♦♥ t♦ ✐ts t✉r♥✐♥❣ ♣♦✐♥t✳ ❍♦✇✲ ❡✈❡r✱ t❤❡ t✇♦✲❞✐♠❡♥s✐♦♥❛❧ s♦❧✉t✐♦♥ t❤❛t ❜✐❢✉r❝❛t❡s ❢r♦♠ t❤❡ ❧❛♠✐♥❛r ✢♦✇ ❞♦❡s ♥♦t ❡①t❡♥❞ ❞♦✇♥ ✽

(19)

U(y) x y z Lx Lz 2d a) 4.5 5.0 5.5 6.0 6.5 Lx 2000 3000 4000 5000 6000 7000 8000 R e ReP ReB Recrit b) ❋✐❣✉r❡ ✷✳✶✿ P❛♥❡❧ ❛✮ s❤♦✇s ❛ s❦❡t❝❤ ♦❢ t❤❡ ❣❡♦♠❡tr② ♦❢ t❤❡ PP❋ ❣❡♦♠❡tr②✳ ■♥ ♣❛♥❡❧ ❜✮ t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ♦❢ t❤❡ ❧❛♠✐♥❛r PP❋ ♣r♦✜❧❡ ✐s s❤♦✇♥ ✐♥ ❞❡♣❡♥❞❡♥❝❡ ♦♥ t❤❡ str❡❛♠✇✐s❡ ✇❛✈❡❧❡♥❣t❤ Lx ✭r❡❞✮✳ ❋✉rt❤❡r♠♦r❡✱ t❤❡ ❜✉❧❦✲ ❛♥❞ ♣r❡ss✉r❡ ❘❡②♥♦❧❞s ♥✉♠❜❡r ReB ❛♥❞ ReP ♦❢ t❤❡ t✉r♥✐♥❣ ♣♦✐♥ts ♦❢ t❤❡ ❜✐❢✉r❝❛t✐♥❣ t✇♦✲❞✐♠❡♥s✐♦♥❛❧ ❚❙✲✇❛✈❡ ❛r❡ s❤♦✇♥ ✐♥ ❣r❡❡♥ ❛♥❞ ❜❧✉❡✱ r❡s♣❡❝t✐✈❡❧②✳ t♦ s✉❝❤ ❧♦✇ ❘❡②♥♦❧❞s ♥✉♠❜❡rs✳ ■♥ ✜❣✉r❡ ✷✳✶❜ t❤❡ ❘❡②♥♦❧❞s ♥✉♠❜❡rs ♦❢ t❤❡ t✉r♥✐♥❣ ♣♦✐♥ts ♦❢ t❤❡ t✇♦✲❞✐♠❡♥s✐♦♥❛❧ ✇❛✈❡s ❛r❡ s❤♦✇♥ ✐♥ ❞❡♣❡♥❞❡♥❝❡ ♦♥ t❤❡ str❡❛♠✇✐s❡ ✇❛✈❡❧❡♥❣t❤ Lx✳ ❚❤❡ ♣❧♦t ✐❧❧✉str❛t❡s t❤❛t t❤❡ ♠✐♥✐♠❛❧ ✈❛❧✉❡s ♦❢ ReB ❛♥❞ ReP ❛s ✇❡❧❧ ❛s t❤❡ ❝♦rr❡s♣♦♥❞✐♥❣ ✇❛✈❡❧❡♥❣t❤s ❞✐✛❡r s❧✐❣❤t❧②✳ ❍♦✇❡✈❡r✱ t❤❡ ❧♦✇❡st ✈❛❧✉❡ ♦❢ ReB❢♦r ✇❤✐❝❤ t❤❡s❡ t✇♦✲❞✐♠❡♥s✐♦♥❛❧ ✇❛✈❡s ❡①✐st ✐s ❛❜♦✉t 2610 ❛♥❞ t❤❡ ❧♦✇❡st ✈❛❧✉❡ ♦❢ ReP ✐s ❛❜♦✉t 2940✳ ❚❤✐s ✐s st✐❧❧ ❢❛r ❛❜♦✈❡ t❤❡ ❡①♣❡r✐♠❡♥t❛❧❧② ♦❜s❡r✈❡❞ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡✳ ❆s✐❞❡ ❢r♦♠ t❤❡ ❡①❛❝t s♦❧✉t✐♦♥s t❤❛t ❛r❡ ❝r❡❛t❡❞ ✐♥ t❤❡ ❜✐❢✉r❝❛t✐♦♥ ♦❢ t❤❡ ❧❛♠✐♥❛r st❛t❡ t❤❡r❡ ❛r❡ ♦t❤❡r ❡①❛❝t s♦❧✉t✐♦♥s ♦❢ t❤❡ ◆❛✈✐❡r✲❙t♦❦❡s ❡q✉❛t✐♦♥s ❢♦r PP❋✳ ❆ ❝♦✉♣❧❡ ♦❢ t❤❡♠ ❤❛✈❡ ❜❡❡♥ ✐❞❡♥t✐✜❡❞ ❞✉r✐♥❣ t❤❡ ❧❛st ②❡❛rs ✭❲❛❧❡✛❡✱ ✷✵✵✶❀ ◆❛❣❛t❛ ❛♥❞ ❉❡❣✉❝❤✐✱ ✷✵✶✸❀ ●✐❜s♦♥ ❛♥❞ ❇r❛♥❞✱ ✷✵✶✹❀ ❘❛✇❛t ❡t ❛❧✳✱ ✷✵✶✹✮✳ ❙♦♠❡ ♦❢ t❤❡s❡ str✉❝t✉r❡s ❡①✐st ❢♦r ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❜❡❧♦✇ t❤❡ ♦❜s❡r✈❡❞ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡✳ ❈❤❛♣t❡r ✸ ✐s ❞❡✈♦t❡❞ t♦ t❤❡ ✐❞❡♥t✐✜❝❛t✐♦♥ ♦❢ t❤r❡❡✲❞✐♠❡♥s✐♦♥❛❧ ❡①❛❝t ❝♦❤❡r❡♥t str✉❝t✉r❡s✳ ❆ ♠♦r❡ ❞❡t❛✐❧❡❞ ✐♥tr♦❞✉❝t✐♦♥ t♦ t❤✐s ❛❝t✐✈❡ t♦♣✐❝ ♦❢ r❡s❡❛r❝❤ ✇✐❧❧ ❜❡ ❣✐✈❡♥ ✐♥ t❤✐s ❝❤❛♣t❡r ❛♥❞ s❡✈❡r❛❧ ♥❡✇ ❡①❛❝t ❝♦❤❡r❡♥t str✉❝t✉r❡s ❛♥❞ ❞✐✛❡r❡♥t str❛t❡❣✐❡s t♦ ✜♥❞ t❤❡♠ ✇✐❧❧ ❜❡ ♣r❡s❡♥t❡❞✳ ▼♦r❡♦✈❡r✱ t❤❡ ♠✐♥✐♠❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡rs ❢♦r ✇❤✐❝❤ s✉❝❤ s♦❧✉t✐♦♥s ❡①✐st ✇✐❧❧ ❜❡ ❞❡t❡r♠✐♥❡❞✳ ■♥ ❝❤❛♣t❡r ✹ ✇❡ ✇✐❧❧ ♠❛❦❡ ❛ st❡♣ t♦✇❛r❞s t❤❡ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❢♦r t❤❡ ♦♥s❡t ♦❢ t✉r❜✉❧❡♥❝❡✱ t❤❡ s❡❝♦♥❞ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ♠❡♥t✐♦♥❡❞ ❜② ❍❡✐s❡♥❜❡r❣✳ ❙t❛rt✐♥❣ ✇✐t❤ ❛♥ ❡①❛❝t ❝♦❤❡r❡♥t str✉❝t✉r❡ ✐t ✇✐❧❧ ❜❡ s❤♦✇♥ ❤♦✇ ❛ s❡q✉❡♥❝❡ ♦❢ ❜✐❢✉r❝❛t✐♦♥s ❝r❡❛t❡s ❛ ❝❤❛♦t✐❝ s❛❞❞❧❡✳ ❆ s♣❡❝✐❛❧ ❝❧❛ss ♦❢ ❜✐❢✉r❝❛t✐♦♥s r❡❧❡✈❛♥t ✐♥ t❤✐s ❝♦♥t❡①t ❛r❡ ❝r✐s✐s ❜✐❢✉r❝❛t✐♦♥s t❤❛t tr❛♥s❢♦r♠ ❛ ❝❤❛♦t✐❝ ❛ttr❛❝t♦r ✐♥t♦ ❛ s❛❞❞❧❡✳ ❚❤❡ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❛t ✇❤✐❝❤ t❤❡ ❝❤❛♦t✐❝ s❛❞❞❧❡ ❛♣♣❡❛rs ❝❛♥ ❜❡ s❡❡♥ ❛s ❛ ❝r✐t✐❝❛❧ ❘❡②♥♦❧❞s ♥✉♠❜❡r ❢♦r t❤❡ ❛♣♣❡❛r❛♥❝❡ ♦❢ tr❛♥s✐❡♥t s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡✳ ■♥ ❝❤❛♣t❡r ✺ t❤❡ ❝♦♥♥❡❝t✐♦♥ ❜❡t✇❡❡♥ t❤❡ ❡①❛❝t ❝♦❤❡r❡♥t str✉❝t✉r❡s r❡❧❛t❡❞ t♦ t❤❡ ♦r✐❣✐♥ ♦❢ s✉❜❝r✐t✐❝❛❧ t✉r❜✉❧❡♥❝❡ ❛♥❞ t❤♦s❡ ❜✐❢✉r❝❛t✐♥❣ ❢r♦♠ t❤❡ ❧❛♠✐♥❛r st❛t❡ ✐s ❡①♣❧♦r❡❞✳ ❚❤❡ t✇♦ ❦♥♦✇♥ tr❛♥s✐t✐♦♥ ♣❛t❤s t♦ t✉r❜✉❧❡♥❝❡✱ t❤❡ ❜②♣❛ss✲ ❛♥❞ t❤❡ ❚❙✲tr❛♥s✐t✐♦♥ ✭s❡❡ ❡✳❣✳ ❙❝❤♠✐❞ ❛♥❞ ❍❡♥♥✐♥❣s♦♥✱ ✷✵✵✶✮ ✇✐❧❧ ❜❡ ❞✐s❝✉ss❡❞ ❛♥❞ r❡❧❛t❡❞ t♦ t❤❡ ❞✐✛❡r❡♥t ❡①❛❝t ❝♦❤❡r❡♥t str✉❝t✉r❡s✳ ❋✉rt❤❡r♠♦r❡✱ ✐t ✐s s❤♦✇♥ t❤❛t ✐♥ t❤❡ st❛t❡ s♣❛❝❡ ❞✐✛❡r❡♥t ❛r❡❛s ❝❛♥ ❜❡ ❞✐st✐♥❣✉✐s❤❡❞✱ ✇❤❡r❡ t❤❡ t✇♦ tr❛♥s✐t✐♦♥ ♣❛t❤s ❛r❡ ♣r❡s❡♥t✳ ✾

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