Échantillonnage d’ensembles ordonnés avec probabilité proportionnelle à la taille dans des populations stratifiées
Section 7. Conclusions

Un échantillonnage avec probabilité proportionnelle à la taille donne des estimateurs très efficaces pour la moyenne et le total de la population quand il existe une mesure de la taille pour chaque unité de la population. La mesure de la taille contient de l’information significative sur l’importance de chaque unité incluse dans l’échantillon. Elle fournit également des renseignements importants sur la position relative (rang) des unités de population. En conjuguant ces deux éléments d’information de façon significative, on obtient un nouveau plan d’échantillonnage, l’échantillonnage d’ensembles ordonnés PPT stratifié. L’échantillonnage d’ensembles ordonnés PPT stratifié conjugue les gains d’efficacité de l’échantillonnage probabiliste et l’information sur la position (rang) de l’unité de l’échantillon dans un ensemble de comparaison.

Nous avons construit des estimateurs sans biais pour la moyenne de la population, son total et leurs variances. La répartition de taille d’échantillon à chaque strate joue un rôle significatif dans l’efficacité des estimateurs. Le choix de la répartition de taille d’échantillon dépend du coût de l’échantillonnage, des tailles de population des strates et des variances. Si les populations plus grandes présentent des variances plus importantes, la répartition proportionnelle fonctionne raisonnablement bien. Le nouveau plan de sondage est appliqué aux données sur la production de pommes dans une population stratifiée.

Annexe

Démonstration du théorème 1. Notons d’abord que ( Y [ h ] i , π [ h ] i ) , MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaadaqadeqaaiaadMfadaWgaaWcbaWaam WabeaacaaMi8UaamiAaiaayIW7aiaawUfacaGLDbaacaaMi8UaamyA aaqabaGccaaISaGaaGjbVlabec8aWnaaBaaaleaadaWadeqaaiaayI W7caWGObGaaGjcVdGaay5waiaaw2faaiaayIW7caWGPbaabeaaaOGa ayjkaiaawMcaaiaacYcaaaa@49A1@ i = 1, , d MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaacaWGPbGaaGjbVlaai2dacaaMe8UaaG ymaiaaiYcacaaMe8UaeSOjGSKaaiilaiaaysW7caWGKbaaaa@3D30@ sont des variables iid aléatoires. Puis, nous écrivons

E ( Y ¯ OP , N ) = 1 d H N h = 1 H d E ( Y [ h ] 1 π [ h ] 1 ) = 1 d H N h = 1 H k = 1 N d y k P ( Y [ h ] 1 = y k ) π k = 1 H N h = 1 H k = 1 N y k π k f [ h : H ] ( y k ) = 1 H N k = 1 N y k π k h = 1 H f [ h : H ] ( y k ) . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaafaqaaeGacaaabaGaamyramaabmqaba GabmywayaaraWaaSbaaSqaaiaab+eacaqGqbGaaGilaiaaysW7caWG obaabeaaaOGaayjkaiaawMcaaaqaaiaai2dacaaMe8+aaSaaaeaaca aIXaaabaGaamizaiaadIeacaWGobaaaiaaysW7daaeWbqabSqaaiaa dIgacaaI9aGaaGymaaqaaiaadIeaa0GaeyyeIuoakiaaysW7caWGKb GaamyramaabmqabaWaaSaaaeaacaWGzbWaaSbaaSqaamaadmqabaGa aGjcVlaadIgacaaMi8oacaGLBbGaayzxaaGaaGjcVlaaigdaaeqaaa GcbaGaeqiWda3aaSbaaSqaamaadmqabaGaaGjcVlaadIgacaaMi8oa caGLBbGaayzxaaGaaGjcVlaaigdaaeqaaaaaaOGaayjkaiaawMcaai aaysW7caaI9aGaaGjbVpaalaaabaGaaGymaaqaaiaadsgacaWGibGa amOtaaaacaaMe8+aaabCaeqaleaacaWGObGaaGypaiaaigdaaeaaca WGibaaniabggHiLdGccaaMe8+aaabCaeqaleaacaWGRbGaaGypaiaa igdaaeaacaWGobaaniabggHiLdGccaaMe8UaamizaiaadMhadaWgaa WcbaGaam4AaaqabaGccaaMe8+aaSaaaeaacaWGqbWaaeWabeaacaWG zbWaaSbaaSqaamaadmqabaGaaGjcVlaadIgacaaMi8oacaGLBbGaay zxaaGaaGjcVlaaigdaaeqaaOGaaGjbVlaai2dacaaMe8UaamyEamaa BaaaleaacaWGRbaabeaaaOGaayjkaiaawMcaaaqaaiabec8aWnaaBa aaleaacaWGRbaabeaaaaaakeaaaeaacaaI9aGaaGjbVpaalaaabaGa aGymaaqaaiaadIeacaWGobaaaiaaysW7daaeWbqabSqaaiaadIgaca aI9aGaaGymaaqaaiaadIeaa0GaeyyeIuoakiaaysW7daaeWbqabSqa aiaadUgacaaI9aGaaGymaaqaaiaad6eaa0GaeyyeIuoakiaaysW7da WcaaqaaiaadMhadaWgaaWcbaGaam4AaaqabaaakeaacqaHapaCdaWg aaWcbaGaam4AaaqabaaaaOGaaGjbVlaadAgadaWgaaWcbaWaamWabe aacaaMi8UaamiAaiaacQdacaaMc8UaamisaiaayIW7aiaawUfacaGL DbaaaeqaaOWaaeWabeaacaWG5bWaaSbaaSqaaiaadUgaaeqaaaGcca GLOaGaayzkaaGaaGjbVlaai2dacaaMe8+aaSaaaeaacaaIXaaabaGa amisaiaad6eaaaGaaGjbVpaaqahabeWcbaGaam4Aaiaai2dacaaIXa aabaGaamOtaaqdcqGHris5aOGaaGjbVpaalaaabaGaamyEamaaBaaa leaacaWGRbaabeaaaOqaaiabec8aWnaaBaaaleaacaWGRbaabeaaaa GccaaMe8+aaabCaeqaleaacaWGObGaaGypaiaaigdaaeaacaWGibaa niabggHiLdGccaaMe8UaamOzamaaBaaaleaadaWadeqaaiaayIW7ca WGObGaaiOoaiaaykW7caWGibGaaGjcVdGaay5waiaaw2faaaqabaGc daqadeqaaiaadMhadaWgaaWcbaGaam4AaaqabaaakiaawIcacaGLPa aacaaIUaaaaaaa@E346@

En utilisant la cohérence de la procédure de classement de l’équation (2.2), nous écrivons

E ( Y ¯ OP , N ) = 1 H N k = 1 N ( y k π k ) H f ( y k ) = 1 N k = 1 N ( y k π k ) j = 1 N π j I ( y k = y j ) = 1 N k = 1 N y k = μ N . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaacaWGfbWaaeWabeaaceWGzbGbaebada WgaaWcbaGaae4taiaabcfacaaISaGaaGjbVlaad6eaaeqaaaGccaGL OaGaayzkaaGaaGjbVlaai2dacaaMe8+aaSaaaeaacaaIXaaabaGaam isaiaad6eaaaGaaGjbVpaaqahabeWcbaGaam4Aaiaai2dacaaIXaaa baGaamOtaaqdcqGHris5aOGaaGjbVpaabmqabaWaaSaaaeaacaWG5b WaaSbaaSqaaiaadUgaaeqaaaGcbaGaeqiWda3aaSbaaSqaaiaadUga aeqaaaaaaOGaayjkaiaawMcaaiaadIeacaWGMbWaaeWabeaacaWG5b WaaSbaaSqaaiaadUgaaeqaaaGccaGLOaGaayzkaaGaaGjbVlaai2da caaMe8+aaSaaaeaacaaIXaaabaGaamOtaaaacaaMe8+aaabCaeqale aacaWGRbGaaGypaiaaigdaaeaacaWGobaaniabggHiLdGccaaMe8+a aeWabeaadaWcaaqaaiaadMhadaWgaaWcbaGaam4Aaaqabaaakeaacq aHapaCdaWgaaWcbaGaam4AaaqabaaaaaGccaGLOaGaayzkaaGaaGjb VpaaqahabeWcbaGaamOAaiaai2dacaaIXaaabaGaamOtaaqdcqGHri s5aOGaaGjbVlabec8aWnaaBaaaleaacaWGQbaabeaakiaadMeadaqa deqaaiaadMhadaWgaaWcbaGaam4AaaqabaGccaaMe8UaaGypaiaays W7caWG5bWaaSbaaSqaaiaadQgaaeqaaaGccaGLOaGaayzkaaGaaGjb Vlaai2dacaaMe8+aaSaaaeaacaaIXaaabaGaamOtaaaadaaeWbqabS qaaiaadUgacaaI9aGaaGymaaqaaiaad6eaa0GaeyyeIuoakiaaysW7 caWG5bWaaSbaaSqaaiaadUgaaeqaaOGaaGjbVlaai2dacaaMe8Uaeq iVd02aaSbaaSqaaiaad6eaaeqaaOGaaGOlaaaa@9547@

Afin de démontrer la variance, considérons

Var ( Y ¯ OP , N ) = d H 2 d 2 N 2 h = 1 H Var ( Y [ h ] 1 π [ h ] 1 ) = 1 H 2 d N 2 h = 1 H { E ( Y [ h ] 1 π [ h ] 1 ) 2 [ E ( Y [ h ] 1 π [ h ] 1 ) ] 2 } = 1 n H N 2 h = 1 H E ( Y [ h ] 1 π [ h ] 1 ) 2 1 n H N 2 h = 1 H μ [ h : H ] 2 . ( A .1 ) MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaafaqaaeWacaaabaGaaeOvaiaabggaca qGYbWaaeWabeaaceWGzbGbaebadaWgaaWcbaGaae4taiaabcfacaaI SaGaaGjbVlaad6eaaeqaaaGccaGLOaGaayzkaaaabaGaaGypaiaays W7daWcaaqaaiaadsgaaeaacaWGibWaaWbaaSqabeaacaaIYaaaaOGa amizamaaCaaaleqabaGaaGOmaaaakiaad6eadaahaaWcbeqaaiaaik daaaaaaOWaaabCaeqaleaacaWGObGaaGypaiaaigdaaeaacaWGibaa niabggHiLdGccaaMe8UaaeOvaiaabggacaqGYbWaaeWabeaadaWcaa qaaiaadMfadaWgaaWcbaWaamWabeaacaaMi8UaamiAaiaayIW7aiaa wUfacaGLDbaacaaMi8UaaGymaaqabaaakeaacqaHapaCdaWgaaWcba WaamWabeaacaaMi8UaamiAaiaayIW7aiaawUfacaGLDbaacaaMi8Ua aGymaaqabaaaaaGccaGLOaGaayzkaaaabaaabaGaaGypaiaaysW7da WcaaqaaiaaigdaaeaacaWGibWaaWbaaSqabeaacaaIYaaaaOGaamiz aiaad6eadaahaaWcbeqaaiaaikdaaaaaaOWaaabCaeqaleaacaWGOb GaaGypaiaaigdaaeaacaWGibaaniabggHiLdGccaaMc8+aaiWaaeaa caWGfbWaaeWaaeaadaWcaaqaaiaadMfadaWgaaWcbaWaamWabeaaca aMi8UaamiAaiaayIW7aiaawUfacaGLDbaacaaMi8UaaGymaaqabaaa keaacqaHapaCdaWgaaWcbaWaamWabeaacaaMi8UaamiAaiaayIW7ai aawUfacaGLDbaacaaMi8UaaGymaaqabaaaaaGccaGLOaGaayzkaaWa aWbaaSqabeaacaaIYaaaaOGaaGjbVlabgkHiTiaaysW7daWadaqaai aadweadaqadaqaamaalaaabaGaamywamaaBaaaleaadaWadeqaaiaa yIW7caWGObGaaGjcVdGaay5waiaaw2faaiaayIW7caaIXaaabeaaaO qaaiabec8aWnaaBaaaleaadaWadeqaaiaayIW7caWGObGaaGjcVdGa ay5waiaaw2faaiaayIW7caaIXaaabeaaaaaakiaawIcacaGLPaaaai aawUfacaGLDbaadaahaaWcbeqaaiaaikdaaaaakiaawUhacaGL9baa aeaaaeaacaaI9aGaaGjbVpaalaaabaGaaGymaaqaaiaad6gacaWGib GaamOtamaaCaaaleqabaGaaGOmaaaaaaGcdaaeWbqabSqaaiaadIga caaI9aGaaGymaaqaaiaadIeaa0GaeyyeIuoakiaaysW7caWGfbWaae WaaeaadaWcaaqaaiaadMfadaWgaaWcbaWaamWabeaacaaMi8UaamiA aiaayIW7aiaawUfacaGLDbaacaaMi8UaaGymaaqabaaakeaacqaHap aCdaWgaaWcbaWaamWabeaacaaMi8UaamiAaiaayIW7aiaawUfacaGL DbaacaaMi8UaaGymaaqabaaaaaGccaGLOaGaayzkaaWaaWbaaSqabe aacaaIYaaaaOGaaGjbVlabgkHiTiaaysW7daWcaaqaaiaaigdaaeaa caWGUbGaamisaiaad6eadaahaaWcbeqaaiaaikdaaaaaaOWaaabCae qaleaacaWGObGaaGypaiaaigdaaeaacaWGibaaniabggHiLdGccaaM c8UaeqiVd02aa0baaSqaamaadmqabaGaaGjcVlaadIgacaGG6aGaaG PaVlaadIeacaaMi8oacaGLBbGaayzxaaaabaGaaGOmaaaakiaai6ca caaMf8UaaGzbVlaaywW7caaMf8UaaGzbVlaacIcacaqGbbGaaeOlai aabgdacaGGPaaaaaaa@F3A2@

En nous appuyant encore une fois sur la cohérence de la procédure de classement à l’intérieur de l’ensemble de l’équation (2.2), nous écrivons

1 n N 2 H h = 1 H E ( Y [ h ] 1 π [ h ] 1 ) 2 = 1 n N 2 E ( Y 1 π 1 ) 2 = 1 n N 2 Var ( Y 1 π 1 ) + 1 n N 2 { E ( Y 1 π 1 ) } 2 = Var ( Y ¯ PPT ) + μ N 2 / n . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaafaqaaeGacaaabaWaaSaaaeaacaaIXa aabaGaamOBaiaad6eadaahaaWcbeqaaiaaikdaaaGccaWGibaaaiaa ysW7daaeWbqabSqaaiaadIgacaaI9aGaaGymaaqaaiaadIeaa0Gaey yeIuoakiaaysW7caWGfbWaaeWaaeaadaWcaaqaaiaadMfadaWgaaWc baWaamWabeaacaaMi8UaamiAaiaayIW7aiaawUfacaGLDbaacaaMi8 UaaGymaaqabaaakeaacqaHapaCdaWgaaWcbaWaamWabeaacaaMi8Ua amiAaiaayIW7aiaawUfacaGLDbaacaaMi8UaaGymaaqabaaaaaGcca GLOaGaayzkaaWaaWbaaSqabeaacaaIYaaaaaGcbaGaaGypaiaaysW7 daWcaaqaaiaaigdaaeaacaWGUbGaamOtamaaCaaaleqabaGaaGOmaa aaaaGccaWGfbWaaeWaaeaadaWcaaqaaiaadMfadaWgaaWcbaGaaGym aaqabaaakeaacqaHapaCdaWgaaWcbaGaaGymaaqabaaaaaGccaGLOa GaayzkaaWaaWbaaSqabeaacaaIYaaaaOGaaGjbVlaai2dacaaMe8+a aSaaaeaacaaIXaaabaGaamOBaiaad6eadaahaaWcbeqaaiaaikdaaa aaaOGaaeOvaiaabggacaqGYbWaaeWaaeaadaWcaaqaaiaadMfadaWg aaWcbaGaaGymaaqabaaakeaacqaHapaCdaWgaaWcbaGaaGymaaqaba aaaaGccaGLOaGaayzkaaGaaGjbVlabgUcaRiaaysW7daWcaaqaaiaa igdaaeaacaWGUbGaamOtamaaCaaaleqabaGaaGOmaaaaaaGcdaGada qaaiaadweadaqadaqaamaalaaabaGaamywamaaBaaaleaacaaIXaaa beaaaOqaaiabec8aWnaaBaaaleaacaaIXaaabeaaaaaakiaawIcaca GLPaaaaiaawUhacaGL9baadaahaaWcbeqaaiaaikdaaaaakeaaaeaa caaI9aGaaGjbVlaabAfacaqGHbGaaeOCamaabmaabaGabmywayaara WaaSbaaSqaaiaabcfacaqGqbGaaeivaaqabaaakiaawIcacaGLPaaa caaMe8Uaey4kaSIaaGjbVpaalyaabaGaeqiVd02aa0baaSqaaiaad6 eaaeaacaaIYaaaaaGcbaGaamOBaaaacaaIUaaaaaaa@97E3@

Nous insérons maintenant ce résultat dans l’équation (A.1) pour écrire

Var ( Y ¯ OP , N ) = Var ( Y ¯ PPT ) + μ N 2 / n 1 n H N 2 h = 1 H μ [ h : H ] 2 = Var ( Y ¯ PPT ) 1 n H N 2 h = 1 H ( μ [ h : H ] N μ N ) 2 Var ( Y ¯ PPT ) . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaafaqaaeWacaaabaGaaeOvaiaabggaca qGYbWaaeWabeaaceWGzbGbaebadaWgaaWcbaGaae4taiaabcfacaaI SaGaaGjbVlaad6eaaeqaaaGccaGLOaGaayzkaaaabaGaaGypaiaays W7caqGwbGaaeyyaiaabkhadaqadaqaaiqadMfagaqeamaaBaaaleaa caqGqbGaaeiuaiaabsfaaeqaaaGccaGLOaGaayzkaaGaaGjbVlabgU caRiaaysW7daWcgaqaaiabeY7aTnaaDaaaleaacaWGobaabaGaaGOm aaaaaOqaaiaad6gaaaGaeyOeI0YaaSaaaeaacaaIXaaabaGaamOBai aadIeacaWGobWaaWbaaSqabeaacaaIYaaaaaaakmaaqahabeWcbaGa amiAaiaai2dacaaIXaaabaGaamisaaqdcqGHris5aOGaaGjbVlabeY 7aTnaaDaaaleaadaWadeqaaiaayIW7caWGObGaaiOoaiaaykW7caWG ibGaaGjcVdGaay5waiaaw2faaaqaaiaaikdaaaaakeaaaeaacaaI9a GaaGjbVlaabAfacaqGHbGaaeOCamaabmqabaGabmywayaaraWaaSba aSqaaiaabcfacaqGqbGaaeivaaqabaaakiaawIcacaGLPaaacaaMe8 UaeyOeI0IaaGjbVpaalaaabaGaaGymaaqaaiaad6gacaWGibGaamOt amaaCaaaleqabaGaaGOmaaaaaaGcdaaeWbqabSqaaiaadIgacaaI9a GaaGymaaqaaiaadIeaa0GaeyyeIuoakmaabmaabaGaeqiVd02aaSba aSqaamaadmqabaGaaGjcVlaadIgacaGG6aGaaGPaVlaadIeacaaMi8 oacaGLBbGaayzxaaaabeaakiaaysW7cqGHsislcaaMe8UaamOtaiab eY7aTnaaBaaaleaacaWGobaabeaaaOGaayjkaiaawMcaamaaCaaale qabaGaaGOmaaaaaOqaaaqaaiabgsMiJkaaysW7caqGwbGaaeyyaiaa bkhadaqadeqaaiqadMfagaqeamaaBaaaleaacaqGqbGaaeiuaiaabs faaeqaaaGccaGLOaGaayzkaaGaaGOlaaaaaaa@9F2F@

Le théorème est démontré.

Démonstration du théorème 2. On constate aisément que

E ( σ ^ Y ¯ OP , N 2 ) = 2 d ( d 1 ) 2 d 2 ( d 1 ) N 2 H 2 h = 1 H E ( Y [ h ] 1 π [ h ] 1 ) 2 2 d ( d 1 ) 2 d 2 ( d 1 ) N 2 H 2 h = 1 H E ( Y [ h ] 1 π [ h ] 1 ) E ( Y [ h ] 2 π [ h ] 2 ) = 1 d H 2 N 2 h = 1 H { E ( Y [ h ] 1 π [ h ] 1 ) 2 [ E ( Y [ h ] 1 π [ h ] 1 ) ] 2 } = 1 d H 2 N 2 h = 1 H σ [ h : H ] 2 . MathType@MTEF@5@5@+= feaagKart1ev2aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaebbnrfifHhDYfgasaacH8rrps0l bbf9q8WrFfeuY=Hhbbf9y8qrpq0dc9vqFj0db9qqvqFr0dXdHiVc=b YP0xH8peeu0xXdcrpe0db9Wqpepec9ar=xfr=xfr=tmeaabaqaciGa caGaaeqabaqaaeaadaaakeaafaqaaeGacaaabaGaamyramaabmqaba Gafq4WdmNbaKaadaqhaaWcbaGabmywayaaraWaaSbaaWqaaiaab+ea caqGqbGaaiilaiaaysW7caWGobaabeaaaSqaaiaaikdaaaaakiaawI cacaGLPaaaaeaacaaI9aGaaGjbVpaalaaabaGaaGOmaiaadsgadaqa deqaaiaadsgacaaMe8UaeyOeI0IaaGjbVlaaigdaaiaawIcacaGLPa aaaeaacaaIYaGaamizamaaCaaaleqabaGaaGOmaaaakmaabmqabaGa amizaiaaysW7cqGHsislcaaMe8UaaGymaaGaayjkaiaawMcaaiaad6 eadaahaaWcbeqaaiaaikdaaaGccaWGibWaaWbaaSqabeaacaaIYaaa aaaakmaaqahabeWcbaGaamiAaiaai2dacaaIXaaabaGaamisaaqdcq GHris5aOGaaGPaVlaadweadaqadaqaamaalaaabaGaamywamaaBaaa leaadaWadeqaaiaayIW7caWGObGaaGjcVdGaay5waiaaw2faaiaayI W7caaIXaaabeaaaOqaaiabec8aWnaaBaaaleaadaWadeqaaiaayIW7 caWGObGaaGjcVdGaay5waiaaw2faaiaayIW7caaIXaaabeaaaaaaki aawIcacaGLPaaadaahaaWcbeqaaiaaikdaaaGccaaMe8UaeyOeI0Ia aGjbVpaalaaabaGaaGOmaiaadsgadaqadeqaaiaadsgacaaMe8Uaey OeI0IaaGjbVlaaigdaaiaawIcacaGLPaaaaeaacaaIYaGaamizamaa CaaaleqabaGaaGOmaaaakmaabmqabaGaamizaiaaysW7cqGHsislca aMe8UaaGymaaGaayjkaiaawMcaaiaad6eadaahaaWcbeqaaiaaikda aaGccaWGibWaaWbaaSqabeaacaaIYaaaaaaakmaaqahabeWcbaGaam iAaiaai2dacaaIXaaabaGaamisaaqdcqGHris5aOGaaGPaVlaadwea daqadaqaamaalaaabaGaamywamaaBaaaleaadaWadeqaaiaayIW7ca WGObGaaGjcVdGaay5waiaaw2faaiaayIW7caaIXaaabeaaaOqaaiab ec8aWnaaBaaaleaadaWadeqaaiaayIW7caWGObGaaGjcVdGaay5wai aaw2faaiaayIW7caaIXaaabeaaaaaakiaawIcacaGLPaaacaWGfbWa aeWaaeaadaWcaaqaaiaadMfadaWgaaWcbaWaamWabeaacaaMi8Uaam iAaiaayIW7aiaawUfacaGLDbaacaaMi8UaaGOmaaqabaaakeaacqaH apaCdaWgaaWcbaWaamWabeaacaaMi8UaamiAaiaayIW7aiaawUfaca GLDbaacaaMi8UaaGOmaaqabaaaaaGccaGLOaGaayzkaaaabaaabaGa aGypaiaaysW7daWcaaqaaiaaigdaaeaacaWGKbGaamisamaaCaaale qabaGaaGOmaaaakiaad6eadaahaaWcbeqaaiaaikdaaaaaaOWaaabC aeqaleaacaWGObGaaGypaiaaigdaaeaacaWGibaaniabggHiLdGcda GadaqaaiaadweadaqadaqaamaalaaabaGaamywamaaBaaaleaadaWa deqaaiaayIW7caWGObGaaGjcVdGaay5waiaaw2faaiaayIW7caaIXa aabeaaaOqaaiabec8aWnaaBaaaleaadaWadeqaaiaayIW7caWGObGa aGjcVdGaay5waiaaw2faaiaayIW7caaIXaaabeaaaaaakiaawIcaca GLPaaadaahaaWcbeqaaiaaikdaaaGccaaMe8UaeyOeI0IaaGjbVpaa dmaabaGaamyramaabmaabaWaaSaaaeaacaWGzbWaaSbaaSqaamaadm qabaGaaGjcVlaadIgacaaMi8oacaGLBbGaayzxaaGaaGjcVlaaigda aeqaaaGcbaGaeqiWda3aaSbaaSqaamaadmqabaGaaGjcVlaadIgaca aMi8oacaGLBbGaayzxaaGaaGjcVlaaigdaaeqaaaaaaOGaayjkaiaa wMcaaaGaay5waiaaw2faamaaCaaaleqabaGaaGOmaaaaaOGaay5Eai aaw2haaiaaysW7caaI9aGaaGjbVpaalaaabaGaaGymaaqaaiaadsga caWGibWaaWbaaSqabeaacaaIYaaaaOGaamOtamaaCaaaleqabaGaaG OmaaaaaaGcdaaeWbqabSqaaiaadIgacaaI9aGaaGymaaqaaiaadIea a0GaeyyeIuoakiaaykW7cqaHdpWCdaqhaaWcbaWaamWabeaacaaMi8 UaamiAaiaacQdacaaMc8UaamisaiaayIW7aiaawUfacaGLDbaaaeaa caaIYaaaaOGaaGOlaaaaaaa@2012@

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