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Hipoeliticidade global e vetores simultaneamente aproximáveis
(Universidade Federal de São Carlos, 2003-08-11) Simsen, Jacson; Petronilho, Gerson; https://lattes.cnpq.br/5917989984472668
A necessary and sufficient condition is given for a sum of squares operator to be globally hypoelliptic. This condition is expressed in terms of Diophatine approximation properties of the coefficients. The proof of the Theorem is based on L2− estimates.
Um estudo para escolha do SGBD em processos de reengenharia orientada a objetos
(Universidade Federal de São Carlos, 2003-08-11) Morais, Rinaldo Macedo de; Penteado, Rosângela Aparecida Dellosso; https://lattes.cnpq.br/4061946080136286
A process for the database management system (DBMS) choice in the forward engineering stage, in an object-oriented reengineering is presented. The process was instanced for two particular DBMSs Jasmine and Caché, which a forward engineering case study was developed. The legacy system taken as example was submitted to the reengineering process being used the Sybase relational database management system. This same system was used following the process described in this work and having the Jasmine and Caché DBMSs to data persistence. Of this way, three versions could be obtained for a same system. A comparative analysis of three versions also consists of this work.