O processo de institucionalização do curso de administração a distância da UFRN

This work aims to describe how is occurring through the process of institutionalizing the Administration distance course of UFRN. To this end, structured into two parts: through research and analysis of content, sought to impound as if gave historic process of creation, as well as identify variables isomórficas, proposed by Powell and DiMaggio (1991), on the actions undertaken, and still present, institutional actors-having been found three typologies; then investigated the process itself, analyzing the factors of institutionalization suggested Esman (1966-1972), internal structure doctrine, leadership programme, resources, links and exchanges, from the political plan educational course. As the research methodology was defined as qualitative, even though I used survey to collect, reviewed the second ANOVA. The results found in this step pointed out that only the doctrine and internal structure variables are consistent with the assumptions of model; we found for other, discharged indicated a gap between the political acts contemplated in teaching and the actions taken so far, unfavourable element to its legitimacy. However, although the implications found in the analysis of these factors suggest that this course can derive one more discontinuous Government proposal of distance course, this study believes that are still reasonable assistance to facilitate and promote the process aimed at strengthening the progress achieved so far in the success of its institutionalization

Luz e sombra: uma interpretação de suas significações imaginárias nas imagens do cinema expressionista alemão e do cinema noir americano

The present investigation proposes an approach of light and shadow and their imaginary significations in the images of both German expressionist movie and the American noir movie, whose aesthetic experience is expressed through a contrasting bright/dark photography, loaded with symbolism. The interpretation of the imaginary significations of this imagistic material is based on Gilbert Durand´s imaginary anthropological theories that deal with a myriad of symbols gathered according to their semantic isomorphism and linked to more general structures named as Daily and nightly Image Regime . There come to gravitate, around such regimes, symbols attached to division and purification, ascensional and spectacular, with imaginary significations homological to Light and Good, and symbols associated to night, fall and animalism, isomorphic of Shadow and Evil

Fases e criticalidade no modelo ashkin - teller de três cores

The usual Ashkin-Teller (AT) model is obtained as a superposition of two Ising models coupled through a four-spin interaction term. In two dimension the AT model displays a line of fixed points along which the exponents vary continuously. On this line the model becomes soluble via a mapping onto the Baxter model. Such richness of multicritical behavior led Grest and Widom to introduce the N-color Ashkin-Teller model (N-AT). Those authors made an extensive analysis of the model thus introduced both in the isotropic as well as in the anisotropic cases by several analytical and computational methods. In the present work we define a more general version of the 3-color Ashkin-Teller model by introducing a 6-spin interaction term. We investigate the corresponding symmetry structure presented by our model in conjunction with an analysis of possible phase diagrams obtained by real space renormalization group techniques. The phase diagram are obtained at finite temperature in the region where the ferromagnetic behavior is predominant. Through the use of the transmissivities concepts we obtain the recursion relations in some periodical as well as aperiodic hierarchical lattices. In a first analysis we initially consider the two-color Ashkin-Teller model in order to obtain some results with could be used as a guide to our main purpose. In the anisotropic case the model was previously studied on the Wheatstone bridge by Claudionor Bezerra in his Master Degree dissertation. By using more appropriated computational resources we obtained isomorphic critical surfaces described in Bezerra's work but not properly identified. Besides, we also analyzed the isotropic version in an aperiodic hierarchical lattice, and we showed how the geometric fluctuations are affected by such aperiodicity and its consequences in the corresponding critical behavior. Those analysis were carried out by the use of appropriated definitions of transmissivities. Finally, we considered the modified 3-AT model with a 6-spin couplings. With the inclusion of such term the model becomes more attractive from the symmetry point of view. For some hierarchical lattices we derived general recursion relations in the anisotropic version of the model (3-AAT), from which case we can obtain the corresponding equations for the isotropic version (3-IAT). The 3-IAT was studied extensively in the whole region where the ferromagnetic couplings are dominant. The fixed points and the respective critical exponents were determined. By analyzing the attraction basins of such fixed points we were able to find the three-parameter phase diagram (temperature £ 4-spin coupling £ 6-spin coupling). We could identify fixed points corresponding to the universality class of Ising and 4- and 8-state Potts model. We also obtained a fixed point which seems to be a sort of reminiscence of a 6-state Potts fixed point as well as a possible indication of the existence of a Baxter line. Some unstable fixed points which do not belong to any aforementioned q-state Potts universality class was also found

Geographic variations in the composition of myotoxins from Bothrops neuwiedi snake venoms: biochemical characterization and biological activity

(1) Venom pools from Bothrops neuwiedi (Bn) and from two subspecies, namely Bothrops neuwiedi pauloensis (Bnp) and Bothrops neuwiedi urutu (Bnu), collected in the States of São Paulo (SP) and Minas Gerais (MG), Brazil, were electrophoretically examined. Basic toxins with different isoelectric points were identified in the venom collected in São Paulo (BnSP). These toxins were absent in the corresponding pools from Minas Gerais (BnMG, BnpMG and BnuMG). (2) BnSP, but not BnMG, BnpMG or BnuMG, showed two myotoxins (pI congruent to 8.6 and 8.8, respectively) which were isolated by ion-exchange chromatography on CM-Sepharose. (3) From BnMG, three myotoxic isoforms (pI congruent to 8.2 and M-r = 13600) were isolated by chromatography on CM-Sepharose followed by reversed-phase high-performance liquid chromatography. (4) the chemical and biological characterization of these toxins showed a high similarity with the Lys-49 myotoxins from other bothropic venoms. (5) Doses up to 5 LD50 (i.p.) of p-bromophenacyl bromide alkylated BnSP-7 caused a total loss of lethality in 18-22-g mice, thus indicating that the LD50 was increased by greater than 5-fold. At this dose myotoxicity was also not detectable, but the edematogenic activity on the rat paw apparently did not change. (C) 1998 Elsevier B.V. All rights reserved.

Charges and fluxes in Maxwell theory on compact manifolds with boundary

We investigate the charges and fluxes that can occur in higher-order Abelian gauge theories defined on compact space-time manifolds with boundary. The boundary is necessary to supply a destination to the electric lines of force emanating from brane sources, thus allowing non-zero net electric charges, but it also introduces new types of electric and magnetic flux. The resulting structure of currents, charges, and fluxes is studied and expressed in the language of relative homology and de Rham cohomology and the corresponding abelian groups. These can be organised in terms of a pair of exact sequences related by the Poincare-Lefschetz isomorphism and by a weaker flip symmetry exchanging the ends of the sequences. It is shown how all this structure is brought into play by the imposition of the appropriately generalised Maxwell's equations. The requirement that these equations be integrable restricts the world-volume of a permitted brane (assumed closed) to be homologous to a cycle on the boundary of space-time. All electric charges and magnetic fluxes are quantised and satisfy the Dirac quantisation condition. But through some boundary cycles there may be unquantised electric fluxes associated with quantised magnetic fluxes and so dyonic in nature.

Conformal structures and twistors in the paravector model of spacetime

Some properties of the Clifford algebras Cl-3,Cl-0, Cl-1,Cl-3, Cl-4,Cl-1 similar or equal to C circle times Cl-1,Cl-3 and Cl-2,Cl-4 are presented, and three isomorphisms between the Dirac-Clifford algebra C circle times Cl-1,Cl-3 and Cl-4,Cl-1 are exhibited, in order to construct conformal maps and twistors, using the paravector model of spacetime. The isomorphism between the twistor space inner product isometry group SU( 2,2) and the group $pin(+)(2,4) is also investigated, in the light of a suitable isomorphism between C circle times Cl-1,Cl-3 and Cl-4,Cl-1. After reviewing the conformal spacetime structure, conformal maps are described in Minkowski spacetime as the twisted adjoint representation of $ pin(+)(2,4), acting on paravectors. Twistors are then presented via the paravector model of Clifford algebras and related to conformal maps in the Clifford algebra over the Lorentzian R-4,(1) spacetime.We construct twistors in Minkowski spacetime as algebraic spinors associated with the Dirac-Clifford algebra C circle times Cl-1,Cl-3 using one lower spacetime dimension than standard Clifford algebra formulations, since for this purpose, the Clifford algebra over R-4,R-1 is also used to describe conformal maps, instead of R-2,(4). Our formalism sheds some new light on the use of the paravector model and generalizations.

A new proposal for the picture changing operators in the minimal pure spinor formalism

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

STRONG COUPLING LIMITS and QUANTUM ISOMORPHISMS of THE GAUGED THIRRING MODEL

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Immersions in the metastable dimension range via the normal bordism approach

Let f : M --> N be a continuous map between two closed n-manifolds such that f(*): H-*(M, Z(2)) --> H-* (N, Z(2)) is an isomorphism. Suppose that M immerses in Rn+k for 5 less than or equal to n < 2k. Then N also immerses in Rn+k. We use techniques of normal bordism theory to prove this result and we show that for a large family of spaces we can replace the homolog condition by the corresponding one in homotopy. (C) 2001 Elsevier B.V. B.V. All rights reserved.

Remarks on immersions in the metastable dimension range

In this work we present a generalization of an exact sequence of normal bordism groups given in a paper by H. A. Salomonsen (Math. Scand. 32 (1973), 87-111). This is applied to prove that if h : M-n --> Xn+k, 5 less than or equal to n < 2k, is a continuous map between two manifolds and g : M-n --> BO is the classifying map of the stable normal bundle of h such that (h, g)(*) : H-i (M, Z(2)) --> H-i (X x BO, Z(2)) is an isomorphism for i < n - k and an epimorphism for i = n - k, then h bordant to an immersion implies that h is homotopic to an immersion. The second remark complements the result of C. Biasi, D. L. Goncalves and A. K. M. Libardi (Topology Applic. 116 (2001), 293-303) and it concerns conditions for which there exist immersions in the metastable dimension range. Some applications and examples for the main results are also given.

Some remarks on the conformal group

It is shown that the local isomorphism between the conformal group of Minkowski spacetime and the group SO(4,2) makes sense only if one eliminates from SO(4,2) one of the Sitter boosts contained in it. © 1992.

Vozes das formas na poesia concreta do Grupo Noigandres

Pós-graduação em Artes - IA

Formação de professores e avaliação formativa: análise de um projeto de interação universidade-escola

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Some mathematical aspects and scattering amplitudes in the pure spinor formalism

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

A Universidade Federal do Pará no processo de modernização da gestão universitária

O desafio de encontrar novos meios de administrar as organizações públicas, os quais não estivessem limitados aos indicadores financeiros e contábeis, foi a grande motivação para o surgimento do planejamento estratégico nas instituições de ensino superior, através de um sistema de gestão estratégica que traduz a missão e a estratégia de organizações, análise do ambiente interno e externo a organização. Esta dissertação aborda a questão da modernização da gestão, através de um estudo de caso de caráter descritivo realizado na Universidade Federal do Pará (UFPA), de como foi implantado o processo para “aprimorar o sistema de planejamento institucional” com vistas a buscar soluções conjuntas aos problemas enfrentados pelo fator negativo - precariedade do sistema de planejamento - diagnosticado no Plano de Desenvolvimento Institucional da UFPA 2001-2010, tendo a Pró-Reitoria de Planejamento e Desenvolvimento Institucional – PROPLAN, como Unidade Central de Planejamento, responsável em desenvolver e implantar instrumentos gerenciais, padronizados, uniformizando as diretrizes gerais oferecendo a todos os segmentos da universidade um eixo comum, norteador das políticas da Universidade, observadas as peculiaridades da sua configuração multicampi. O objetivo principal desta dissertação é identificar as ações estabelecidas no processo para “aprimorar o sistema de planejamento institucional visando reduzir a precariedade do sistema de planejamento na Universidade Federal do Pará”. A metodologia utilizada é a pesquisa qualitativa e como técnica de coleta de dados utilizou-se a pesquisa documental. Os resultados encontrados indicam que a preocupação com estratégias na gestão universitária, são fatos relativamente recentes e que se encontra em profundas transformações, sendo que, no período analisado, a preocupação maior se dá nas unidades acadêmicas. Foi possível observar que as fases do processo de planejamento das ações não se realizam completamente em todas as Unidades e Campi, pois o sistema de acompanhamento do processo de planejamento, praticamente não existiu. Por conseguinte, até então, inexistia uma cultura de planejamento na organização, com a ausência de integração das ações de planejamento entre as Unidades Acadêmicas e a Unidade Central de Planejamento, contribuindo, assim, com a precariedade do Sistema de Planejamento Institucional na UFPA. Conclui-se assim, que houve um avanço nas mudanças planejadas e executadas, tornando a UFPA uma organização isomórfica, as unidades da UFPA que enfrentam as mesmas condições ambientais, foram compelidas a imitarem umas as outras, as características organizacionais foram modificadas consensualmente, através de decisões colegiadas, por meio de uma gestão democrática, tornando, assim, os elementos estruturais isomórficos, consistindo então, conforme a teoria, em estruturas organizacionais que refletem uma realidade socialmente construída. Mas, apesar de ter ocorrido um avanço nas mudanças planejadas e executadas, a universidade utiliza determinados mecanismos não porque acredite que a tornem mais eficaz, mas porque são mecanismos impostos, por pressões externas, a universidade tem que cumprir atos formais, regras, leis e sanções, numa relação de dominação e dependência, configurando-se o isomorfismo institucional coercitivo. Como, também, conclui-se conforme informações coletadas que não ocorreu uma mudança organizacional no sentido amplo, e sim, algumas modificações específicas. Avaliando-se, então, pode-se dizer que a UFPA conseguiu tornar suas Unidades homogêneas nas práticas administrativas, especificamente na prática de planejar, na busca de aperfeiçoar o sistema de planejamento das ações da UFPA – ao se observar que, das vinte e oito Unidades regimentalmente constituídas até 2006, dezenove elaboraram Planos de Gestão para o período de 2002 a 2009, representando que 64% das unidades realizaram as ações planejadas na sua totalidade. E, 36%, nove Unidades não constituíram Planos de Gestão, não utilizaram, instrumentos gerenciais padronizados, uniformizando as diretrizes gerais oferecendo a todos os segmentos da universidade um eixo comum, norteador das políticas da Universidade.