{"id":3272,"date":"2026-02-25T08:33:20","date_gmt":"2026-02-25T00:33:20","guid":{"rendered":"https:\/\/www.go2posts.com\/fr\/understanding-activity-diagrams-a-comprehensive-guide-2\/"},"modified":"2026-02-25T08:33:20","modified_gmt":"2026-02-25T00:33:20","slug":"understanding-activity-diagrams-a-comprehensive-guide-2","status":"publish","type":"post","link":"https:\/\/www.go2posts.com\/fr\/understanding-activity-diagrams-a-comprehensive-guide-2\/","title":{"rendered":"Comprendre les diagrammes d&#8217;activit\u00e9 : un guide complet"},"content":{"rendered":"<h1>Guide complet sur les diagrammes d&#8217;activit\u00e9<\/h1>\n<p>Les diagrammes d&#8217;activit\u00e9 sont un type de diagramme de langage de mod\u00e9lisation unifi\u00e9 (UML) qui repr\u00e9sente les aspects dynamiques d&#8217;un syst\u00e8me. Ils sont couramment utilis\u00e9s pour mod\u00e9liser les flux de travail, les processus m\u00e9tier et les algorithmes en visualisant les activit\u00e9s s\u00e9quentielles et parall\u00e8les au sein d&#8217;un processus. Ce guide fournit une explication approfondie des diagrammes d&#8217;activit\u00e9, de leurs fonctionnalit\u00e9s cl\u00e9s, de leurs applications et de conseils pratiques pour cr\u00e9er des diagrammes efficaces.<\/p>\n<hr\/>\n<h2><strong>Fonctionnalit\u00e9s cl\u00e9s des diagrammes d&#8217;activit\u00e9<\/strong><\/h2>\n<p>Les diagrammes d&#8217;activit\u00e9 combinent divers \u00e9l\u00e9ments pour repr\u00e9senter le flux d&#8217;actions, de d\u00e9cisions et d&#8217;objets au sein d&#8217;un processus. Voici les fonctionnalit\u00e9s et notations cl\u00e9s utilis\u00e9es dans les diagrammes d&#8217;activit\u00e9 :<\/p>\n<h3><strong>1. Activit\u00e9s s\u00e9quentielles et parall\u00e8les<\/strong><\/h3>\n<ul>\n<li><strong>Activit\u00e9s s\u00e9quentielles<\/strong>: Repr\u00e9sentent des t\u00e2ches qui se succ\u00e8dent.<\/li>\n<li><strong>Activit\u00e9s parall\u00e8les<\/strong>: Mod\u00e9lisent des t\u00e2ches qui peuvent se produire simultan\u00e9ment. La parall\u00e9lisation est repr\u00e9sent\u00e9e \u00e0 l&#8217;aide de<strong>forks<\/strong> (se divise en plusieurs chemins) et<strong>joins<\/strong> (se rejoint en un seul chemin).<\/li>\n<\/ul>\n<h3><strong>2. \u00c9l\u00e9ments de notation<\/strong><\/h3>\n<ul>\n<li><strong>N\u0153uds d&#8217;action<\/strong>: Repr\u00e9sentent une t\u00e2che ou une activit\u00e9 sp\u00e9cifique au sein du processus.<\/li>\n<li><strong>Flux de contr\u00f4le<\/strong>: Des fl\u00e8ches qui indiquent la transition ou le flux entre les actions.<\/li>\n<li><strong>Forks et joins<\/strong>:\n<ul>\n<li><strong>Forks<\/strong>: Divisent un processus en chemins simultan\u00e9s.<\/li>\n<li><strong>Joins<\/strong>: R\u00e9unissent les chemins parall\u00e8les en un seul flux.<\/li>\n<\/ul>\n<\/li>\n<li><strong>N\u0153uds d&#8217;objet<\/strong>: Repr\u00e9sentent les objets ou les donn\u00e9es impliqu\u00e9s dans le processus, permettant de visualiser le flux de donn\u00e9es.<\/li>\n<li><strong>N\u0153uds de d\u00e9cision<\/strong>: Repr\u00e9sent\u00e9s par des losanges, ils repr\u00e9sentent des points de branchement conditionnels o\u00f9 le flux se divise en fonction de conditions sp\u00e9cifiques.<\/li>\n<li><strong>N\u0153ud initial<\/strong>: Indique le point de d\u00e9part du processus.<\/li>\n<li><strong>N\u0153ud final<\/strong>: Repr\u00e9sente la fin du processus.<\/li>\n<\/ul>\n<hr\/>\n<h2><strong>Applications des diagrammes d&#8217;activit\u00e9<\/strong><\/h2>\n<p>Les diagrammes d&#8217;activit\u00e9 sont polyvalents et peuvent \u00eatre appliqu\u00e9s \u00e0 divers domaines. Voici trois de leurs applications les plus courantes :<\/p>\n<h3><strong>1. Mod\u00e9lisation des processus m\u00e9tiers<\/strong><\/h3>\n<p>Les diagrammes d&#8217;activit\u00e9 sont tr\u00e8s efficaces pour visualiser les flux de travail m\u00e9tiers. Par exemple, dans un <strong>processus d&#8217;exp\u00e9dition<\/strong>, les interactions entre les clients, les conducteurs et les syst\u00e8mes logistiques peuvent \u00eatre mod\u00e9lis\u00e9es afin d&#8217;identifier les goulets d&#8217;\u00e9tranglement et d&#8217;optimiser les processus.<\/p>\n<h4>Exemple : Flux de travail du processus d&#8217;exp\u00e9dition<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/JP1D2iCW44RtWdUOPNA5Tj50Djsrq1FOE2OIep9Z2hbz_I6bkz7t-Jx6WPEYj6zEYZf9SHbtJc53WkZKX0o1DD8rWqSPm3942Xamwdnh0grI05oUQbhLZ8rZL5Hn1g_5ncZz34wzqHK-eqTIgGRGQsYEVmENDvLR0zq9D3hxmIo-zP0MzD0To7qj6OCtbhOpSXIpOuJEXnQuAw_TJt7a4jwnzLjJbWzHYY6Vybzy0G00\"\/><\/p>\n<h3><strong>2. Mod\u00e9lisation du flux de donn\u00e9es<\/strong><\/h3>\n<p>Les diagrammes d&#8217;activit\u00e9 peuvent remplacer les diagrammes traditionnels de flux de donn\u00e9es (DFD) pour illustrer le d\u00e9placement des donn\u00e9es au sein d&#8217;un syst\u00e8me. En montrant l&#8217;interaction entre les actions et les n\u0153uds d&#8217;objets, ils offrent une image plus claire des d\u00e9pendances des donn\u00e9es.<\/p>\n<h4>Exemple : Flux de traitement des donn\u00e9es<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/DOun2iCm34LtW--WqRb2EZH33r1IwAuc2XMuTf2KG6zVEQ6RzDwN-8CQYcsV7CCnnT2FD17l13CQ0fTriulJ9sPsSc87l42wjSJUnBK3UrE1z2NjOW3exr8dKlt7dJoi2e6GRjdK7n_gXKgkAIj1AlMy7P5z9P4gpPMPbrQlhZ4ClddR7m00\"\/><\/p>\n<h3><strong>3. Repr\u00e9sentation des algorithmes<\/strong><\/h3>\n<p>Les diagrammes d&#8217;activit\u00e9 sont utiles pour mod\u00e9liser les algorithmes, en particulier ceux impliquant la concurrence. Ils peuvent repr\u00e9senter des threads ou des processus s&#8217;ex\u00e9cutant en parall\u00e8le.<\/p>\n<h4>Exemple : Ex\u00e9cution d&#8217;un algorithme concurrent<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/SoWkIImgAStDuUK2itYvh3ppCaio4tCogr8LYbAByqkBabEBhNcvqlABidcv51IiN2jIaqjBKXL2CefI4rCK3A5o2edfYPbvs5GO0LMavgKeG4omSixFJShC0njUcbC2Chgu9B-0byi1g0Re4000\"\/><\/p>\n<h2><strong>Lignes directrices pour cr\u00e9er des diagrammes d&#8217;activit\u00e9 efficaces<\/strong><\/h2>\n<p>Pour cr\u00e9er des diagrammes d&#8217;activit\u00e9 clairs et efficaces, suivez ces lignes directrices :<\/p>\n<h3><strong>1. Commencez par un aper\u00e7u de haut niveau<\/strong><\/h3>\n<p>Commencez par une version simplifi\u00e9e du processus afin d&#8217;offrir un aper\u00e7u. Concentrez-vous sur les actions et d\u00e9cisions cl\u00e9s sans entrer dans des d\u00e9tails inutiles. Vous pouvez ensuite d\u00e9velopper certaines parties en sous-diagrammes.<\/p>\n<h4>Exemple : Aper\u00e7u de haut niveau d&#8217;un flux de travail e-commerce<\/h4>\n<h3><strong>2. Maintenez une coh\u00e9rence au niveau d&#8217;abstraction<\/strong><\/h3>\n<p>Assurez-vous que les n\u0153uds d&#8217;action dans un diagramme sont au m\u00eame niveau de d\u00e9tail. M\u00e9langer des actions de haut niveau et de bas niveau peut troubler les lecteurs et r\u00e9duire la clart\u00e9.<\/p>\n<h3><strong>3. Utilisez des partitions (nageoires)<\/strong><\/h3>\n<p>Les partitions, \u00e9galement appel\u00e9es nageoires, sont des divisions verticales ou horizontales dans un diagramme qui attribuent des responsabilit\u00e9s \u00e0 diff\u00e9rents acteurs ou d\u00e9partements. Cela am\u00e9liore la clart\u00e9 lorsque plusieurs parties sont impliqu\u00e9es.<\/p>\n<h4>Exemple : Flux de travail avec nageoires<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/uml.planttext.com\/plantuml\/png\/HOwx2iCm34LtW__1t-4iWGvTEWG2tLLRkAP-8Ib381zVgqlNU-vhPG6IenPhhjl1qYlIPSrFjSPl1GAwJX5fcOxzPC4wkNz2oH7ap_n6FI2p6t1MRABI7HkIclYTnyWjkG8lBDhqw2cpvC1QjayyS-432HSTxyEQ5LkSlxu0\"\/><\/p>\n<h3><strong>4. Utilisez des n\u0153uds de d\u00e9cision pour la logique conditionnelle<\/strong><\/h3>\n<p>Utilisez des n\u0153uds de d\u00e9cision pour repr\u00e9senter les points o\u00f9 le processus se divise en fonction de conditions. Assurez-vous que chaque flux sortant est \u00e9tiquet\u00e9 avec une condition.<\/p>\n<hr\/>\n<h2><strong>Conclusion<\/strong><\/h2>\n<p>Les diagrammes d&#8217;activit\u00e9 sont des outils puissants pour visualiser et analyser des processus complexes. Leur capacit\u00e9 \u00e0 repr\u00e9senter \u00e0 la fois le flux de contr\u00f4le et le flux de donn\u00e9es les rend id\u00e9aux pour la mod\u00e9lisation des affaires, la conception d&#8217;algorithmes et l&#8217;analyse des syst\u00e8mes. En suivant les bonnes pratiques \u2014 telles que la maintenance d&#8217;un niveau d&#8217;abstraction coh\u00e9rent, l&#8217;utilisation de partitions pour am\u00e9liorer la clart\u00e9 et le d\u00e9but par des aper\u00e7us de haut niveau \u2014 vous pouvez cr\u00e9er des diagrammes \u00e0 la fois informatifs et faciles \u00e0 comprendre.<\/p>\n<p>Ces diagrammes aident non seulement les parties prenantes \u00e0 comprendre les subtilit\u00e9s d&#8217;un syst\u00e8me, mais fournissent \u00e9galement une base pour l&#8217;optimisation des processus et la prise de d\u00e9cision. Avec la bonne approche, les diagrammes d&#8217;activit\u00e9 peuvent devenir un atout inestimable dans votre outil de mod\u00e9lisation.<\/p>\n<h2>R\u00e9f\u00e9rence<\/h2>\n<ol>\n<li>\n<p dir=\"auto\"><strong>Qu&#8217;est-ce qu&#8217;un diagramme d&#8217;activit\u00e9 ?<\/strong><\/p>\n<ul>\n<li>Ce guide pr\u00e9sente une introduction aux diagrammes d&#8217;activit\u00e9 UML, en expliquant leur objectif et la mani\u00e8re dont ils mod\u00e9lisent le flux d&#8217;une activit\u00e9 \u00e0 une autre. Il met \u00e9galement en \u00e9vidence Visual Paradigm Community Edition comme outil UML gratuit pour cr\u00e9er des diagrammes d&#8217;activit\u00e9.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-activity-diagram\/\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-activity-diagram\/\" rel=\"noopener\" target=\"_blank\">1<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Comment dessiner un diagramme d&#8217;activit\u00e9 ?<\/strong><\/p>\n<ul>\n<li>Ce guide \u00e9tape par \u00e9tape explique comment dessiner des diagrammes d&#8217;activit\u00e9 UML \u00e0 l&#8217;aide de Visual Paradigm. Il couvre les bases des diagrammes d&#8217;activit\u00e9, y compris la concurrence, la branche, le flux de contr\u00f4le et le flux d&#8217;objets.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2580\/6713_drawingactiv.html\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2580\/6713_drawingactiv.html\" rel=\"noopener\" target=\"_blank\">2<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Comment dessiner un diagramme d&#8217;activit\u00e9 en UML ?<\/strong><\/p>\n<ul>\n<li>Ce tutoriel propose un guide complet sur la cr\u00e9ation de diagrammes d&#8217;activit\u00e9 UML avec Visual Paradigm. Il inclut des \u00e9tapes d\u00e9taill\u00e9es et des exemples pour aider les utilisateurs \u00e0 comprendre le processus de cr\u00e9ation de diagrammes d&#8217;activit\u00e9.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/tutorials\/how-to-draw-activity-diagram-in-uml\/\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/tutorials\/how-to-draw-activity-diagram-in-uml\/\" rel=\"noopener\" target=\"_blank\">3<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Tutoriel sur le diagramme d&#8217;activit\u00e9<\/strong><\/p>\n<ul>\n<li>Ce tutoriel offre une \u00e9tude approfondie des diagrammes d&#8217;activit\u00e9 UML, incluant des exemples et des explications des concepts cl\u00e9s tels que les \u00e9tats initiaux, les \u00e9tats d&#8217;action finales et les nageoires.<\/li>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/tutorials\/activity-diagram-tutorial\/\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/tutorials\/activity-diagram-tutorial\/\" rel=\"noopener\" target=\"_blank\">4<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Diagramme d&#8217;activit\u00e9<\/strong><\/p>\n<ul>\n<li>Ce manuel explique les composants des diagrammes d&#8217;activit\u00e9 UML, notamment les activit\u00e9s, les \u00e9tats et les transitions. Il aborde \u00e9galement les similitudes entre les diagrammes d&#8217;activit\u00e9 et les diagrammes d&#8217;\u00e9tats.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/learning\/handbooks\/software-design-handbook\/activity-diagram.jsp\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/learning\/handbooks\/software-design-handbook\/activity-diagram.jsp\" rel=\"noopener\" target=\"_blank\">5<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Outil en ligne pour les diagrammes d&#8217;activit\u00e9<\/strong><\/p>\n<ul>\n<li>Visual Paradigm Online propose un outil facile \u00e0 utiliser pour cr\u00e9er des diagrammes d&#8217;activit\u00e9 UML. Cet outil permet aux utilisateurs de collaborer en ligne et de cr\u00e9er des diagrammes professionnels gr\u00e2ce \u00e0 une fonctionnalit\u00e9 de glisser-d\u00e9poser.<\/li>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/activity-diagram-software\/\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/activity-diagram-software\/\" rel=\"noopener\" target=\"_blank\">6<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Diagramme d&#8217;activit\u00e9 \u2013 Diagrammes UML 2<\/strong><\/p>\n<ul>\n<li>Cette ressource fournit un aper\u00e7u des diagrammes d&#8217;activit\u00e9 UML et de leur utilisation pour d\u00e9crire le flux de contr\u00f4le dans un syst\u00e8me, y compris les r\u00e8gles commerciales complexes et les op\u00e9rations.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/VPGallery\/diagrams\/Activity.html\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/VPGallery\/diagrams\/Activity.html\" rel=\"noopener\" target=\"_blank\">7<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Mod\u00e8les de diagrammes d&#8217;activit\u00e9<\/strong><\/p>\n<ul>\n<li>Visual Paradigm Online propose une vari\u00e9t\u00e9 de mod\u00e8les de diagrammes d&#8217;activit\u00e9 pour aider les utilisateurs \u00e0 commencer \u00e0 cr\u00e9er des diagrammes UML. Ces mod\u00e8les peuvent \u00eatre personnalis\u00e9s pour r\u00e9pondre \u00e0 des besoins sp\u00e9cifiques.<\/li>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/activity-diagram\/\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/templates\/activity-diagram\/\" rel=\"noopener\" target=\"_blank\">8<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>SysML : comment utiliser les diagrammes d&#8217;activit\u00e9 pour mod\u00e9liser le comportement d&#8217;un syst\u00e8me ?<\/strong><\/p>\n<ul>\n<li>Ce guide explique comment utiliser les diagrammes d&#8217;activit\u00e9 SysML pour mod\u00e9liser le comportement d&#8217;un syst\u00e8me. Il aborde le flux d&#8217;objets \u00e0 travers un comportement et la transformation des entr\u00e9es en sorties.<\/li>\n<li><a href=\"https:\/\/www.visual-paradigm.com\/guide\/sysml\/how-to-use-activity...\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/www.visual-paradigm.com\/guide\/sysml\/how-to-use-activity...\" rel=\"noopener\" target=\"_blank\">9<\/a><\/li>\n<\/ul>\n<\/li>\n<li>\n<p dir=\"auto\"><strong>Outil gratuit de diagramme d&#8217;activit\u00e9<\/strong><\/p>\n<ul>\n<li>Visual Paradigm Online propose un outil gratuit pour cr\u00e9er des diagrammes d&#8217;activit\u00e9 UML. Cet outil est intuitif et permet aux utilisateurs de cr\u00e9er rapidement et facilement des diagrammes professionnels.<\/li>\n<li><a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/solutions\/free-activity-diagram-tool\/\">En savoir plus<\/a>\u00a0<a class=\"mi-ref cursor-pointer align-super text-muted-foreground fade-in hover:underline\" data-state=\"closed\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/solutions\/free-activity-diagram-tool\/\" rel=\"noopener\" target=\"_blank\">10<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Guide complet sur les diagrammes d&#8217;activit\u00e9 Les diagrammes d&#8217;activit\u00e9 sont un type de diagramme de langage de mod\u00e9lisation unifi\u00e9 (UML) qui repr\u00e9sente les aspects dynamiques d&#8217;un syst\u00e8me. Ils sont couramment&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[74],"tags":[],"class_list":["post-3272","post","type-post","status-publish","format-standard","hentry","category-uml"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comprendre les diagrammes d&#039;activit\u00e9 : un guide complet - Go 2 Posts French | Breaking Digital News &amp; Software Trends<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.go2posts.com\/fr\/understanding-activity-diagrams-a-comprehensive-guide-2\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Comprendre les diagrammes d&#039;activit\u00e9 : un guide complet - Go 2 Posts French | Breaking Digital News &amp; Software Trends\" \/>\n<meta property=\"og:description\" content=\"Guide complet sur les diagrammes d&#8217;activit\u00e9 Les diagrammes d&#8217;activit\u00e9 sont un type de diagramme de langage de mod\u00e9lisation unifi\u00e9 (UML) qui repr\u00e9sente les aspects dynamiques d&#8217;un syst\u00e8me. 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