╨╧рб▒с;■  ■                                                                                                                                                                                                                                                                                                                                                                                                                                                   ¤       ■    ■   ■   ■                                                                                                                                                                                                                                                                                                                                                                                                                                                   Root Entry            ■               ■               ■               ■   ■   ■    ■   ■   !■                                                                                                                                                                                                                                                                                                                                                                                           ■       └FMicrosoft Word-Dokument MSWordDocWord.Document.8Ї9▓q [\ё \Default1$*$3B*OJQJCJmH sH KHPJnH ^JaJ_H tH BA@Є бBAbsatz-StandardschriftartF■FHeading дЁдx$OJQJCJPJ^JaJ.B. Text body ддx/List<■"<Caption дxдx $CJ6aJ]"■2"Index $╘    и и ╘╘PGРTimes New Roman5РSymbol3&РArialmРNimbus Roman No9 LTimes New Roman?РDejaVu SansO&РNimbus Sans LArialBН┼hLВў╞╕╤ГР╕╤'0А■ рЕЯЄ∙OhлС+'│┘0|8 @ L X d pщ¤0@@@А°и▒C╠@ьеM ┐0и Caolan80 $╘      l╚╚╚▄4  I┤(¤X4( ┘Redes de Distribuiчуo de Conte·dos: Abordagens Exatas, Heurэsticas e Hэbridas Uma Rede de Distribuiчуo de Conte·dos (RDC) щ composta por computadores interligados atravщs da internet que colaboram para fornecer conte·dos para clientes. Ela щ uma rede sobreposta que mantщm rщplicas de cada conte·do em seus servidores, com o objetivo de reduzir os atrasos, a carga nos servidores e o congestionamento da rede, melhorando a qualidade do serviчo fornecido. Em arquiteturas de RDC tradicionais, as requisiчїes sуo recebidas por um servidor central e redirecionadas para o servidor mais prєximo do cliente. Entretanto, devido aos custos de manutenчуo das rщplicas, nуo щ razoсvel replicar os conte·dos em toda a rede. Neste trabalho sуo apresentadas abordagens exatas e heurэsticas para resolver um problema de gerenciamento das RDC, conhecido na literatura como Problema de Posicionamento de Rщplicas. Este problema consiste em decidir quais rщplicas serуo colocadas em cada servidor. O objetivo final щ minimizar o trсfego na rede sem violar as restriчїes de qualidade de serviчo. Resultados indicam que as heurэsticas propostas obtщm reduчуo de custo de atщ cinco ordens de grandeza quando comparadas a heurэstica usada comercialmente. и ЬЮи ¤√∙"░╨/ ░р=!░n"░n#Рn$Рn3P(20■ ╒═╒Ь.УЧ+,∙оD╒═╒Ь.УЧ+,∙о\щ¤щ¤Root Entry         └FАCompObj    jOle         1Table            USummaryInformation(    мWordDocument            $DocumentSummaryInformation8             t            ■