Structural Breaks
Mostrando 1-12 de 83 artigos, teses e dissertações.
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1. SWISS CHEESE IN BRAZIL: DISASTER CULTURE AND SAFETY CULTURE IN DISASTERS
Resumo A presente contribuição aponta razões estruturais no Brasil relacionados à “cultura de desastre” e “cultura de segurança” e como esses aspectos influenciam a gestão dos desastres, especialmente aqueles do tipo de baixa incidência e alta consequência, que não dão indícios para a tomada de decisão preventiva. A discussão sobre a oco
Ambient. soc.. Publicado em: 25/11/2019
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2. Uma análise do dilema da persistência da inflação de serviços no Brasil
Resumo Este artigo analisa o Dilema da Persistência da Inflação de Serviços no Brasil, para o período entre agosto de 1999 e fevereiro de 2017. Para efeitos de comparação, cálculos também são feitos para o IPCA, para a inflação desagregada de bens, além de alguns itens desagregados da própria cesta de serviços. São utilizados modelos ARFIMA,
Nova econ.. Publicado em: 10/10/2019
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3. DNA damage in the kidney tissue cells of the fish Rhamdia quelen after trophic contamination with aluminum sulfate
Abstract Even though aluminum is the third most common element present in the earth's crust, information regarding its toxicity remains scarce. It is known that in certain cases, aluminum is neurotoxic, but its effect in other tissues is unknown. The aim of this work was to analyze the genotoxic potential of aluminum sulfate in kidney tissue of the fish Rham
Genet. Mol. Biol.. Publicado em: 24/11/2015
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4. A Methodology to forecast air transportation demand with alternative econometric models
This thesis presents a methodology using a portfolio of time-series models, from conventional ARMA to a regime-changing framework. The objective is to develop an air transportation demand modeling to inspect potential structural breaks in the Brazilian market, due to solve underlying issues of new demand creation. Out-of-sample forecasting is used to generat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/05/2012
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5. Nos domínios de Exu e Xangô o Axé nunca se quebra: transformações históricas em religiões afro-brasileiras. São Paulo e Maceió (1970-2000) / In the fields of Exu and Xangô Axé never breaks: historic changes in Afro-Brazilian religions, São Paulo and Maceió (1970-2000)
This thesis presents an analysis on the historical transformations in the afro-Brazilian religions (Candomblé and Umbanda) in São Paulo and Maceió, at period 1970 up to 2000. In it was looked to analyze such transformations in its internal and external relations, of the terreiros and tents between itself and with the social environment, economic politicia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/05/2012
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6. Avaliação dos lipídeos de membrana e das ORFs dos contratransportadores Na+/H+ e Na+/Ca2+ associados a mecanismos de adaptação à halofilia em Halococcus morrhuae
Soil saliniy is a major factor in reducing plant growth and, consequently, their agricultural productivity. Most of the studies in the literature presents a strategy for reducing the effects of improving salt tolerance in plants for the production of osmolytes and stress proteins, and there are few studies aimed at increasing salt tolerance by restoring ioni
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/09/2011
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7. On the purchasing power parity for latin-american countries
The purpose of this paper is to test the hypothesis of long-run purchasing power parity (PPP) for all Latin American countries. These countries share similar economic history and contagious effects from currency crises, which might lead to comovements in their real exchange rates. New time series unit root tests found evidence of PPP for the vast majority of
Publicado em: 01/06/2010
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8. Uma abordagem da hipótese da neutralidade da moeda usando dados do Brasil pós-Real / An approach to the hypothesis of neutrality of money using data from Brazil after the Real Plan
The hypothesis of neutrality of money is the theoretical framework of the Quantity Theory of Money (QTM), which is based from the Fishers equation of exchange, assuming that the income-velocity of money is constant, the real output is exogenously determined by nonmonetary variables, such as technology, capital stock and labor supply. But the real output is t
Publicado em: 2010
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9. A test for strong hysteresis in international trade
The article suggests a new test for strong hysteresis in international trade. The variables that capture the effects of hysteresis are based on the model of Dixit (1989) with calibrations using a state-space model to determine the parameters for each point in time. These variables are then applied to a cointegration test with breaks, where it is possible to
Publicado em: 26/08/2009
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10. Qual a sensibilidade dos investimentos privados a aumentos na carga tributária brasileira? Uma investigação econométrica
This article aims to offer three contributions to the debate on the recent performance of the Brazilian economy. First, it presents approximate quarterly figures for the Brazilian private investment beginning in 1995. Second, it presents estimates of the Brazilian "investment function" which are robust to the presence of structural breaks. Third, it discusse
Brazilian Journal of Political Economy. Publicado em: 2009-09
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11. Arranjos institucionais e investimento em infra-estrutura no Brasil / Infrastructure investment in Brazil
This work follows the investment evolution in the infrastructure sector since the 60s. The investigated series are subjected to econometric tests proposed by Bai and Perron (1998, 2003b) that, ultimately, seek to identify possible structural breaks and try to link them to institutional changes. The follow segments were: road, rail, electric power and telecom
Publicado em: 2009
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12. Study of the influence of structural defects in the properties of carbon nanotube / Estudo da influência de defeitos estruturais nas propriedades de nanotubos de carbono
We have investigated the influence of defects on structural, electronic and mechanical properties of single-walled carbon nanotubes (SWCNT), bundles of nanotubes and multi-walled carbon nanotubes (MWCNT). All our results were obtained with the first principles theory of total energy - Density Functional theory (DFT). We have investigated the structural prope
Publicado em: 2009