Theories Of Dependence
Mostrando 13-24 de 35 artigos, teses e dissertações.
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13. Identities at stake: double ill-feeling of Primary School teachers and pedagogic coordinators in the construction of their roles / Identidades em jogo: duplo mal-estar das professoras e das coordenadoras pedagógicas do Ensino Fundamental I na constante construção de seus papéis
This study aims at attempting to comprehend the way the professional identities of primary school teachers and pedagogic coordinators has been established in Brazil and the subsequent ill-feeling originated by the educational restructuring of their competencies in the light of their new roles. The search for the understanding of how these identities are cons
Publicado em: 2007
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14. A Vulnerabilidade Econômica do Município de Itabira, Minas Gerais, em Relação à Atividade Mineral
In agreement with the theory of the Economical Enclave and with the theory of the Base of Export, the typical mining districts have great difficulties to develop themselves in a dynamic and autonomous way in relation to the mineral activity. Therefore, even the oldest mining districts are economically dependent and almost their total development perspectives
Publicado em: 2006
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15. A evolução da rotação estelar na vizinhança solar
Different studies point for an rotationage link following a
α tα relationship. The value of the α -parameter has a strong role on the evolutionary behaviour of rotation, because it indicates how strong is the spindown once stars evolve. The well known Skumanichs relation α t −1/2, which is consistent with simple theories Publicado em: 2006
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16. Análise dos efeitos da temperatura nos acoplamentos de modelos escalares O(N) x O(N)
The aim of this work is to analyse how the counter intuitive phenomena known as Symmetry Non Restoration and Inverse Symmetry Breaking manifest themselves within multi scalar field theories displaying O(N)O(N) symmetry. Both, the relativistic as well as the non relativistic versions of such models are investigated here. For the relativistic case, which is im
Publicado em: 2005
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17. Study of stopping of natural Cu ions in Au at low velocities / Estudo do freamento de íons de Cu natural em Au em baixas velocidades
The energy loss of ions in materials is an important issue not only because of its direct applications in analytic techniques of materials but also for studying the basics of ion-atom interactions. Nevertheless, the Stopping Power of heavy ions in solids is still poorly understood which is especially true at low velocities mainly due to the complicated depen
Publicado em: 2005
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18. Development and application of shunt active filters for three-phase four-wire systems / Estudo e aplicação de filtros ativos paralelos para sistemas trifasicos com quatro fios
Electricity power quality has gained increased importance in the past few years. The growing number of power electronicsbased loads has created a preoccupation about harrnonic distortion in electric systems. Electricity power quality is an important issue both for energy utilities and consumers. Harrnonic poIlution may cause severe problems to electricity ut
Publicado em: 2005
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19. Who are the relevant stakeholders to the local government context? Empirical evidences on environmental influences in the decision-making process of English Local Authorities
This article presents empirical evidence of stakeholding in the local government context. It is the result of a survey carried out with English Local Authorities in 2001. It outlines the arena in which local government make decisions by pinpointing the relevant stakeholders in the process as well as the amount of power they are perceived to represent by chie
BAR - Brazilian Administration Review. Publicado em: 2004-12
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20. Nanoagregados em matrizes vitreas
In this thesis we studied the formation and growth of nanoclusters in supersa-turated glassy matrixes during isothermal annealing. We investigate: (i) the effects of sulfur content and of a thermal pre-treatment on the formation and growth of CdTe1-x Sx nanocrystals in a borosilicate glass matrix; (ii) the formation and growth of PbTe nanocrystals in a silic
Publicado em: 2003
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21. Efeitos de temperatura e de interação finita em sistemas desordenados correlacionados
The main goal of this work is to study the role of disorder in strongly correlated systems, where the electron-electron interaction is comparable to or dominates over the electron kinetic energy. Keeping this in mind, we solve the Hubbard model and the Anderson lattice model in the presence of disorder. The main theory in which our work is based is the Dynam
Publicado em: 2003
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22. Limitadores de potencia seletivas em frequencia usando a geração subharmonica de ondas spin em meteriais ferrimagneticos
A review of the linear and non linear theories applied to ferrimagnetic materials is presented with the objective of providing a better understanding of the phenomena occuring in Frequency Selective Power Limiters (LPSF s) operating in the coincidence and subsidiary resonance modes. In addition, it is shown that the limiters operating band pass filters when
Publicado em: 1980
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23. INVESTIGAÇÃO TEÓRICO-EXPERIMENTAL SOBRE O COMPORTAMENTO DO DESVANECIMENTO RÁPIDO NAS LIGAÇÕES DE MICRO-ONDAS EM VISIBILIDADE / THEORETHICAL AND EXPERIMENTAL INVESTIGATION OF FAST FADING IN LINE-OF-SIGHT MICROWAVES LINKS
The purpose of this work is to present a mathematical model to interpret theoreticallly the statistical behavior of deep fades in line-of-sight microware paths. The previous theories are discussed and compared to the known experimental data. A simple model is used to obtain a theoretical dependence of the fades deepth with the path roughness. The results sho
Publicado em: 1977
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24. Thermodynamic extent of counterion release upon binding oligolysines to single-stranded nucleic acids.
A major contribution to the binding free energy associated with most protein-nucleic acid complexes is the increase in entropy due to counterion release from the nucleic acid that results from electrostatic interactions. To examine this quantitatively, we have measured the thermodynamic extent of counterion release that results from the interaction between s