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Política industrial em países dependentes: limites estruturais do novo desenvolvimentismo
(Universidade Federal de São Carlos, 2022-03-17) Barbosa, Tayla Nayara; Carvalho, Joelson Gonçalves de; https://lattes.cnpq.br/0141039743607067; https://lattes.cnpq.br/1006450649563809
The objective of the research was to analyze and compare the structural economic limits of the new South American developmentalism, taking the cases of Brazil and Argentina as examples. The focus of the analysis was the Lula administration (2003-2010) in Brazil and the Néstor Kirchner (2003-2007) and Cristina Fernández de Kirchner (2007-2011) governments in Argentina. The analysis of these limits was based on the dependency theory of Ruy Mauro Marini (1973), according to which the economies of Latin American countries belong to a historical process of power relations, since they are dependent on transfers of value from the central economies. Therefore, in general, the new developmentalism is seen as an economic development strategy that theoretically proposes to guarantee the binomial: economic growth and income distribution. Thus, what we intend to analyze is whether the economic orientations based on the new developmentalism and implemented by these governments diverged or converged with neoliberalism. The hypothesis investigated is that the new developmentalism failed to constitute itself as an alternative long-term development model, since it did not configure itself as a counter-hegemonic project to neoliberalism.
Contribuição ao estudo de pilares pré-moldados de concreto em etapa transitória
(Universidade Federal de São Carlos, 2022-03-17) Otrente, João Francisco; Ferreira, Marcelo de Araújo; https://lattes.cnpq.br/4199122391532470; https://lattes.cnpq.br/3182929421075739
During its production, the precast structures go through different stages called the transitory stage and, consequently, through different static schemes and requests. The precast columns during this stage have a static beam scheme which can cause particular design situations in which the transitory stage is critical for the design. In addition, many designers do not consider the loss of stiffness due to eventual cracking of the element at this stage. The objective of this work is to evaluate how the application of prestressing with pre-tension helps in the performance of precast concrete columns in particular design situations in which the formation of cracks in the phases of the transitory stage can occur. To achieve this, a case study was carried out on a precast concrete column with a critical transitory stage. The column was analyzed in reinforcement concrete with different static schemes and later in prestressed concrete containing two arrangements of active reinforcement. The analysis of the element in question was performed using the following parameters: tension in the reinforcement, cracking moment, amount of reinforcement and secant flexion stiffness via analytical methods. In addition, a parametric analysis was carried out during the demolding phase and lifting in assembly, whose parameters obtained from the variation of the position of the lifting loops were: bending moments, tension in the reinforcement and stiffness reduction coefficient for the most requested sections. Based on the analysis of the results, it is concluded that when using three lifting loops, the column presented a stiffness of up to 0.84.EI during demolding. With the introduction of prestressing, the column with two lifting loops resulted in a stiffness of up to 0.90.EI at the end of transitory stage. Still, it was observed, via parametric analysis, that the column only presented a stiffness bigger than 0.50.EI when the stress level in the passive reinforcement was less than 0.30.fyk. Finally, it is understood that the loss of stiffness during the transitory stage must be accounted for.