Local Instability
Mostrando 13-24 de 66 artigos, teses e dissertações.
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13. NONLINEAR DYNAMICS, INSTABILITY AND CONTROL OF STRUCTURAL SYSTEMS WITH MODAL INTERACTION / DINÂMICA NÃO-LINEAR, INSTABILIDADE E CONTROLE DE SISTEMAS ESTRUTURAIS COM INTERAÇÃO MODAL
The aim of this thesis is to study the influence of coupled buckling modes on the static and particularly on the nonlinear dynamic behavior of structural components liable to buckling. For this, two discrete two degrees of freedom models known for their complex nonlinear behavior are selected: the well-known Augusti¿s model and a simplified model of cable-s
Publicado em: 2010
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14. Os perpétuos e os incompletos: permanência e movimento nos gibis de super-heróis e na série Sandman
This thesis analyzes the fictional narratives of the comics books series Sandman, written by the British author Neil Gaiman, originally published by DC Comics and, in Brazil, by Globo, from 1989 to 1996, noting the translation and appropriation of elements from different cultural contexts for the construction of the narrative, in order to demonstrate that Sa
Publicado em: 2010
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15. Caracterização ambiental de bancos areno-lamosos nos campos petrolíferos de Macau e Serra (RN), como subsídio às medidas mitigadoras ao processo erosivo
On Rio Grande do Norte northern coast the process of sediment transport are intensely controlled by wind and sea (waves and currents) action, causing erosion and shoreline morphological instability. Due to the importance of such coastal zone it was realized the multi-spectral mapping and physical-chemical characterization of mudflats and mangroves aiming to
Publicado em: 2009
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16. Mecanismo de instabilidade devido a grandes perturbações em sistemas elétricos de potência modelados por equações algébrico-diferenciais / Instability mechanism due to large disturbances in electric power systems modeled by differential-algebraic equations
Nesta pesquisa são analisados os mecanismos que levam um sistema elétrico de potência (SEP) à instabilidade proveniente de uma perturbação de grande porte e as formas de se avaliar diretamente a margem de estabilidade desse sistema quando o mesmo é modelado preservando a estrutura da rede de transmissão. O sistema foi matematicamente modelado por um
Publicado em: 2009
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17. Geotechnical site characterization and study of an erosion process caused by urban setting / Investigação geotécnica e estudo de um processo erosivo causado por ocupação urbana
This dissertation presents geotechnical site characterization results of an erosion process area, in Bauru city, inland of São Paulo State, Brazil. The objective is to characterize the local soil and define the major causing factors for the erosion process evolution, which initiated with deforestation, soil sealing and discharge of pluvial and sewer water.
Publicado em: 2009
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18. Organizações não-governamentais ONGs: trajetórias, concepções e práticas em educação popular
The present study has as objective central office to analyze where measured the Organizations Not-Governmental - identified ONGs as progressive in the scope of the popular education, represented here for ONGs SEDUP (Serviço de Educação Popular) and ASD (Associação Santo Dias), contributes with the hegemony of the subordinate class. The choice of these e
Publicado em: 2009
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19. Redeemed by the past? nostalgic seductions in a contemporany city (Joinville - 1997-2008) / Redimidos pelo passado? seduções nostálgicas em uma cidade contemporânea (Joinville - 1997-2008)
This work intends to understand, in an essay form, the ways that the inhabitants of the contemporary cities relate themselves with the past, recognizing, in the simplicity of the experienced and tried daily life, the implications of a phenomenon nominated by some theorists as culture of memory. Takes place in the city of Joinville (Santa Catarina)s trajector
Publicado em: 2009
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20. Pesquisadores, populações locais e áreas protegidas: entre a instabilidade dos lados e a multiplicidade estrutural das posições / Distinctions and similarities among researchers working on protected areas and local populations: multiplicity of "sides" and structural instability of "stands".
A relação entre populações locais e áreas protegidas é tema hoje extremamente controvertido no âmbito científico, mobilizando a atenção de cientistas interessados tanto em pesquisar questões específicas como em interferir em políticas públicas a ele direcionadas. Se há um consenso entre especialistas, é que estamos diante de um contexto discu
Publicado em: 2008
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21. Estudo das características das perturbações EOF extratropicais e seu impacto na previsão de tempo de médio prazo por conjunto
- The characteristics of the extratropical EOF perturbations are studied and their impact on the medium range ensemble weather prediction is evaluated, using simulations with the Center for Weather Prediction and Climate Studies Ensemble Weather Prediction System (CPTEC-EPS). The EOF method, originally applied over tropical regions and for horizontal wind an
Publicado em: 2008
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22. Flow boiling of water in a vertical tube at sub-atmospheric pressures
This paper describes some of the key experimental results and features obtained from a study on upward flow boiling of water in a vertical tube at sub-atmospheric pressures. The experiments were conducted at 250, 500 and 1000 mbar (abs) exit pressures. From the experimental results, several interesting features and effects were observed, namely, heat transfe
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2007-12
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23. How do country risk and national cultural differences between partners affect the survival of international alliances in emerging countries? Longitudinal analysis of 165 international joint ventures in Brazil 1974 to 2005
This article aims at identifying the individual and joint impact of two « country-level variables », namely national distance and country risk, on the survival of international joint ventures in emerging countries. Research hypotheses predicting the negative impact of national distance and country risk on survival are formulated in this article. These rese
Revista Contabilidade & Finanças. Publicado em: 2007-06
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24. Vulnerabilidade associada a precipitações e fatores antropogenicos no municipio de Guaruja (SP) : periodo de 1965 a 2001 / Vulnerability associated to precipitations and anthropogenic factors on Guaruja city (Sao Paulo-Brazil) : period from 1965 to 2001
Space and time patterns of precipitation in Guarujá were observed from 1991 to 2001 and associated with landslides, using data of the Municipal Civil Defense and local periodicals. Results were compared with another research developed for the period of 1965 to 1988 developed by the Geological Institute and the Technological Research Institute, requested by
Publicado em: 2007