4,176 research outputs found
Inacabamento e Cotidiano: um ensaio sobre o contista Marques Rebelo
No full textAo longo de sua trajetória como escritor, Marques Rebelo circulou pelos mais variados gêneros literários. A despeito disso, é notável sua inclinação para o conto, com o qual marcou sua estreia no mundo das letras com o volume intitulado Oscarina (1931), seguido por Três caminhos (1933) e Stela me abriu a porta (1942). Mas, mais do que isso: pelo ritmo ágil de suas narrativas e por seus desfechos abertos, é possível identificar o contista Marques Rebelo mesmo em seus romances, especialmente Marafa (1935) e A estrela sobe (1939). Nesse sentido, o presente artigo tem como objetivo analisar a obra rebeliana produzida nesse período levando em consideração, por um lado, certo inacabamento da forma e, por outro, a dimensão da vida cotidiana em suas tramas. Nossa hipótese é a de que, em Rebelo, esses elementos não apenas se correlacionam como concorrem para uma literatura que lhe possibilita: a) escapar ao cânone ensaístico e sociológico – sem necessariamente confrontá-lo; b) criar para si mesmo uma espécie de entrelugar na história da literatura; c) puir qualquer linha hierárquica entre grandes e pequenos dramas humanos no devir histórico
Apresentação de Na Babugem do Êxodo: romance de Inácio Rebelo de Andrade
No full textNeste artigo o autor apresenta um romance de Inácio Rebelo de Andrade, acerca da colonização de Angola.In this article the author presents a novel by Inácio Rebelo de Andrade about the colonization of Angol
Investment Prices and Exchange Rates: Some Basic Facts
No full textThis paper documents four basic facts about investment goods and investment prices. First, investment has a very significant nontradable component in the form of construction services. Second, distributions services (wholesaling, retailing, and transportation) are much less important for investment than for consumption. Third, the import content of investment is much larger than that of consumption. Finally, in the aftermath of three large devaluations, the rate of exchange rate pass-through is, perhaps not surprisingly, highest for imported equipment and lowest for construction services.
Multiplicity results for periodic solutions of second order ODEs with asymmetric nonlinearities
No full textMultiplicity of solutions of Dirichlet problems associated with second-order equations in R2
No full textWe study the existence of multiple solutions for a two-point boundary-value problem associated with a planar system of second-order ordinary differential equations by using a shooting technique. We consider asymptotically linear nonlinearities satisfying suitable sign conditions. Multiplicity is ensured by assumptions involving the Morse indices of the linearizations at zero and at infinit
Poincar é-Birkhoff fixed point theorem and periodic solutions of asymptotically linear planar Hamiltonian systems. (Turin Fortnight Lectures on Nonlinear Analysis (2001))
No full textBehavioral Theories of the Business Cycle
No full textWe explore the business cycle implications of expectation shocks and of two well-known psychological biases, optimism and overconfidence. The expectations of optimistic agents are biased toward good outcomes, while overconfident agents overestimate the precision of the signals that they receive. Both expectation shocks and overconfidence can increase business-cycle volatility, while preserving the model's properties in terms of comovement, and relative volatilities. In contrast, optimism is not a useful source of volatility in our model.business cycle, optimism, overconfidence, volatility
Behavioral Theories of the Business Cycle
No full textWe explore the business cycle implications of expectation shocks and of two well-known psychological biases, optimism and overconfidence. The expectations of optimistic agents are biased toward good outcomes, while overconfident agents overestimate the precision of the signals that they receive. Both expectation shocks and overconfidence can increase business-cycle volatility, while preserving the model's properties in terms of comovement, and relative volatilities. In contrast, optimism is not a useful source of volatility in our model.
Complete algebraic vector fields on affine surfaces–Part II
No full textAbstractIn this work we finish off the classification of meromorphic semi-complete vector fields announced in Rebelo [J. Geom. Anal 13(4) (2003) 669–696]. As an application of our results, we give a simple and more geometric proof of the classification of complete polynomial vector fields on C2 recently obtained through the works of Brunella and McQuillan
Maslov index, Poincaré - Birkhoff theorem and periodic solutions of asymptotically linear planar Hamiltonian systems
No full textAbstractWe study the relationship between the twist condition in the Poincaré–Birkhoff fixed point theorem and the assumptions on the Maslov index for asymptotically linear planar Hamiltonian systems. For this aim, we develop a variant of the Poincaré–Birkhoff theorem which, together with its classical version, allows to obtain a lower bound for the number of nontrivial periodic solutions in terms of the gap between the Maslov indexes associated to the linearizations of the planar system at zero and at infinity
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