Territórios conservadores de poder no centro-sul do Paraná

Pós-graduação em Geografia - FCT

O processo de gestão de políticas públicas na perspectiva de ruptura social no município de Alterosa - experiência política gestão 1992 a 2005

Pós-graduação em Serviço Social - FCHS

O fim da Guerra Cultural e o conservadorismo estadunidense? uma leitura sobre a trajetória de ascensões e quedas da direita religiosa americana

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Species limits, phylogeographic and hybridization patterns in Neotropical leaf frogs (Phyllomedusinae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Avaliação dos danos por fluência da serpentina da caldeira da REVAP

The determination of the remaining life of equipment operating at high temperatures has been a great challenge for their owners. The use of safety factors, often conservative, makes the replacement of equipment or of its components at the end of the life of design gets financially unviable. This study aimed to estimate the remaining life of the serpentine of the secondary superheater of one of REVAP’s boilers (Henrique Lage Refinery), through accelerated creep tests and comparison of the results with the techniques based on microstructure and hardness. When conducting a proper assessment it’s possible to increase the equipment reliability, ensuring operational continuity and physical integrity. The tests showed a minimal residual life of 12.7 years (111,252 hours), longer than the design life (100,000 hours), even after a period of operation of approximately 250,000 hours, confirming the conservatism of the project. The techniques based on microstructure and hardness did not show good correlation with the creep test, decreasing the reliability of these techniques in determining the residual life

Racismo, eugenia no pensamento conservador brasileiro: a proposta de povo em Renato Kehl

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Desta para a melhor: a presença das viúvas machadianas no Jornal das famílias

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Phylogenetic signal and major ecological shifts in the ecomorphological structure of stream fish in two river basins in Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A "mão pronta" e a divina: manifestações da justiça em contos rosianos

Pós-graduação em Estudos Literários - FCLAR

A "mão pronta" e a divina: manifestações da justiça em contos rosianos

Pós-graduação em Estudos Literários - FCLAR

Evolution of extrafloral nectaries: adaptive process and selective regime changes from forest to savanna

Much effort has been devoted to understanding the function of extrafloral nectaries (EFNs) for antplantherbivore interactions. However, the pattern of evolution of such structures throughout the history of plant lineages remains unexplored. In this study, we used empirical knowledge on plant defences mediated by ants as a theoretical framework to test specific hypotheses about the adaptive role of EFNs during plant evolution. Emphasis was given to different processes (neutral or adaptive) and factors (habitat change and trade-offs with new trichomes) that may have affected the evolution of antplant associations. We measured seven EFN quantitative traits in all 105 species included in a well-supported phylogeny of the tribe Bignonieae (Bignoniaceae) and collected field data on antEFN interactions in 32 species. We identified a positive association between ant visitation (a surrogate of ant guarding) and the abundance of EFNs in vegetative plant parts and rejected the hypothesis of phylogenetic conservatism of EFNs, with most traits presenting K-values < 1. Modelling the evolution of EFN traits using maximum likelihood approaches further suggested adaptive evolution, with static-optimum models showing a better fit than purely drift models. In addition, the abundance of EFNs was associated with habitat shifts (with a decrease in the abundance of EFNs from forest to savannas), and a potential trade-off was detected between the abundance of EFNs and estipitate glandular trichomes (i.e. trichomes with sticky secretion). These evolutionary associations suggest divergent selection between species as well as explains K-values < 1. Experimental studies with multiple lineages of forest and savanna taxa may improve our understanding of the role of nectaries in plants. Overall, our results suggest that the evolution of EFNs was likely associated with the adaptive process which probably played an important role in the diversification of this plant group.

A new approach for modeling and control of nonlinear systems via norm-bounded linear differential inclusions

A systematic approach to model nonlinear systems using norm-bounded linear differential inclusions (NLDIs) is proposed in this paper. The resulting NLDI model is suitable for the application of linear control design techniques and, therefore, it is possible to fulfill certain specifications for the underlying nonlinear system, within an operating region of interest in the state-space, using a linear controller designed for this NLDI model. Hence, a procedure to design a dynamic output feedback controller for the NLDI model is also proposed in this paper. One of the main contributions of the proposed modeling and control approach is the use of the mean-value theorem to represent the nonlinear system by a linear parameter-varying model, which is then mapped into a polytopic linear differential inclusion (PLDI) within the region of interest. To avoid the combinatorial problem that is inherent of polytopic models for medium- and large-sized systems, the PLDI is transformed into an NLDI, and the whole process is carried out ensuring that all trajectories of the underlying nonlinear system are also trajectories of the resulting NLDI within the operating region of interest. Furthermore, it is also possible to choose a particular structure for the NLDI parameters to reduce the conservatism in the representation of the nonlinear system by the NLDI model, and this feature is also one important contribution of this paper. Once the NLDI representation of the nonlinear system is obtained, the paper proposes the application of a linear control design method to this representation. The design is based on quadratic Lyapunov functions and formulated as search problem over a set of bilinear matrix inequalities (BMIs), which is solved using a two-step separation procedure that maps the BMIs into a set of corresponding linear matrix inequalities. Two numerical examples are given to demonstrate the effectiveness of the proposed approach.

Adaptation and Constraint in the Plant Reproductive Phase

Conservatism is a central theme of organismic evolution. Related species share characteristics due to their common ancestry. Some concern have been raised among evolutionary biologists, whether such conservatism is an expression of natural selection or of a constrained ability to adapt. This thesis explores adaptations and constraints within the plant reproductive phase, particularly in relation to the evolution of fleshy fruit types (berries, drupes, etc.) and the seasonal timing of flowering and fruiting. The different studies were arranged along a hierarchy of scale, with general data sets sampled among seed plants at the global scale, through more specific analyses of character evolution within the genus Rhamnus s.l. L. (Rhamnaceae), to descriptive and experimental field studies in a local population of Frangula alnus (Rhamnaceae). Apart from the field study, this thesis is mainly based on comparative methods explicitly incorporating phylogenetic relationships. The comparative study of Rhamnus s.l. species included the reconstruction of phylogenetic hypotheses based on DNA sequences. Among geographically overlapping sister clades, biotic pollination was not correlated with higher species richness when compared to wind pollinated plants. Among woody plants, clades characterized by fleshy fruit types were more species rich than their dry-fruited sister clades, suggesting that the fleshy fruit is a key innovation in woody habitats. Moreover, evolution of fleshy fruits was correlated with a change to more closed (darker) habitats. An independent contrast study within Rhamnus s.l. documented allometric relations between plant and fruit size. As a phylogenetic constraint, allometric effects must be considered weak or non-existent, though, as they did not prevail among different subclades within Rhamnus s.l. Fruit size was correlated with seed size and seed number in F. alnus. This thesis suggests that frugivore selection on fleshy fruit may be important by constraining the upper limits of fruit size, when a plant lineage is colonizing (darker) habitats where larger seed size is adaptive. Phenological correlations with fruit set, dispersal, and seed size in F. alnus, suggested that the evolution of reproductive phenology is constrained by trade-offs and partial interdependences between flowering, fruiting, dispersal, and recruitment phases. Phylogenetic constraints on the evolution of phenology were indicated by a lack of correlation between flowering time and seasonal length within Rhamnus cathartica and F. alnus, respectively. On the other hand, flowering time was correlated with seasonal length among Rhamnus s.l. species. Phenological differences between biotically and wind pollinated angiosperms also suggested adaptive change in reproductive phenology.

Centrifuge modeling of earth-reinforced retaining walls

Object of this thesis has been centrifuge modelling of earth reinforced retaining walls with modular blocks facing in order to investigate on the influence of design parameters, such as length and vertical spacing of reinforcement, on the behaviour of the structure. In order to demonstrate, 11 models were tested, each one with different length of reinforcement or spacing. Each model was constructed and then placed in the centrifuge in order to artificially raise gravitational acceleration up to 35 g, reproducing the soil behaviour of a 5 metre high wall. Vertical and horizontal displacements were recorded by means of a special device which enabled tracking of deformations in the structure along its longitudinal cross section, essentially drawing its deformed shape. As expected, results confirmed reinforcement parameters to be the governing factor in the behaviour of earth reinforced structures since increase in length and spacing improved structural stability. However, the influence of the length was found out to be the leading parameter, reducing facial deformations up to five times, and the spacing playing an important role especially in unstable configurations. When failure occurred, failure surface was characterised by the same shape (circular) and depth, regardless of the reinforcement configuration. Furthermore, results confirmed the over-conservatism of codes, since models with reinforcement layers 0.4H long showed almost negligible deformations. Although the experiments performed were consistent and yielded replicable results, further numerical modelling may allow investigation on other issues, such as the influence of the reinforcement stiffness, facing stiffness and varying backfills.

La Ragione violenta di Ramiro Ledesma Ramos. Fascismo e pensiero conservatore in Spagna

Aunque esta tesis puede leerse desde diferentes perspectivas, tiene una voluntad fundamental: explicar, desde la metodología propia de la historia conceptual, la racionalidad específica del llamado fascismo español. Centra su interés en la figura de Ramiro Ledesma Ramos (1905-1936), fundador del primer movimiento fascista español. Ledesma ideó un proyecto de modernización de España que sólo podía pasar por la organización de un Estado total. Trató de crear un movimiento de masas de corte fascista con capacidad para fundar un Estado total capaz de ser una alternativa viable al liberalismo republicano y al socialismo. El fascismo español emergerá como una experiencia temporal propia de la modernidad. Buscará revitalizar y acelerar un proceso, el moderno, que a la luz de los jóvenes exaltados de principios de siglo se percibía como agotado y decadente. El planteamiento de Ledesma brotaba de la necesidad de combatir aquellas presuntas fuerzas degenerativas (liberalismo, comunismo, conservadurismo, etc.) de la historia contemporánea española para erigir una nueva modernidad basada en el renacimiento de la nación. Al mismo tiempo, se pretende poner en relieve la eficacia de la acción histórica planteada por el pensamiento reaccionario español. Bajo sus coordenadas, la nación jamás desarrollaría los rasgos sublimados de la política moderna europea. Jamás abandonó los pretendidos órdenes del derecho natural del clasicismo católico que, en última instancia, limitaban la potencia absoluta de cualquier soberano político. Esta particularidad histórica, arrastrada desde la primera modernidad, impedirá con obstinación cualquier oleada revolucionaria que supusiera la autonomización de la esfera política y por tanto, la instauración de un poder totalitario. De hecho, cuando se instauré la dictadura del Franco, a lo más que se llegaría, sería a un Estado mínimo, que bajo los presupuestos del tradicionalismo, dejaba a su suerte las dinámicas económicas.