Previsibilidade de retorno das ações no mercado brasileiro, através da aplicação de modelo de valor presente com retornos esperados constantes num contexto de expectativas racionais

Através de dados financeiros de ações negociadas na Bolsa de Valores de São Paulo, testa-se a validade do modelo de valor presente (MVP) com retornos esperados constantes ao longo do tempo (Campbell & Schiller, 1987). Esse modelo relaciona o preço de uma ação ao seu esperado fluxo de dividendos trazido a valor presente a uma taxa de desconto constante ao longo do tempo. Por trás desse modelo está a hipótese de expectativas racionais, bem como a hipótese de previsibilidade de preço futuro do ativo, através da inserção dos dividendos esperados no período seguinte. Nesse trabalho é realizada uma análise multivariada num arcabouço de séries temporais, utilizando a técnica de Auto-Regressões Vetoriais. Os resultados empíricos apresentados, embora inconclusivos, permitem apenas admitir que não é possível rejeitar completamente a hipótese de expectativas racionais para os ativos brasileiros.

Esporte como experiência estética e educativaEsporte educativa: uma abordagem fenomenológica

This paper deals with sport as a possibility of disclosing the sensible, and defends the idea that being a sportsperson equals living an aesthetic and educative experience in which one can interacts with the sensible by the athletic body s reverberation of sensations in the dimension of the experienced. We try to answer, in our work, basically three questions: what moves the athlete when practicing a sport? Which are the meanings and motivations for the practice of sports? At what measure the athlete s experience gains an educational character? Sport is debated in this work as an extension of the living, as long as it tries to understand the meanings inherent to sport itself as well as to the sportive experience as a kind of education. In support of our argument, we give a theoretic and philosophical approach to our thesis, based on thinkers like Maurice Merleau-Ponty, Walter Benjamin, Marcel Mauss and Friedrich Schiller. For this purpose, we get support on the phenomenology of the French philosopher Maurice Merleau-Ponty. Our reference is the living world of the athlete and his experience as a field of the sensible. Our point of departure is the analysis of the narratives of sport experiences, including five aesthetic elements; time and space of the body in the sports courts; the look on the sportive context; the contact with the adversary; victory and defeat; the technical gesture. Besides it, we worked out an aesthetic evaluation of the movies Olympia and Invictus , what let us discuss three thematic categories: sensibility, emotions and the play paradox. Subsequently, we point sport as an optimizer of the sensible education, present on the body s processes, like the body in movement. It was also made clear along this paper that we tried to accomplish an analysis on sports centered in the athlete s body as an outfit of the senses to things related to the sensible, whose aesthetic experience overpasses any deterministic conception that should sum up the sportive world to mercantilization, discipline practices and mechanicism. This approach franchises gateways to a Physical Education which, containing sports as one of its support, let pupils enjoy the pleasure of constructing common objectives, incorporating the capacity of replicating, re-making and playing as a field of possibilities offered by an education characterized as being moving, sensible and fitful to a body in movement

Festa na escola e a autopoiese do lazer

This study shows the problem of school party and its relations with the perspective of leisure autopoiesis in the lives of students living in student housing. It has aimed to describe and interpret the most meaningful leisure experiences in daily life of a student housing and the ludopoietic processes for the humanescent self-education. From the theoretical assumptions supporting the development of this research have highlighted: Education by Freire (1996); Embodiment by Pierrakos (1990); Leisure by Dumazedier (1999); Party by Duvignaud (1983), Playful by Schiller (2002), Working by Freinet (1998), Autopoiesis by Maturana and Varela (2001), belonging to each day by Certeau (1994). A qualitative study adopts the principles of existential action research, in an ethnofenomenological perspective. As a methodology, we use the metaphor of sowing covering the planting, flowering, harvest and new planting. The scenario was to sow the Escola Agrícola de Jundiaí - RN. Twenty-five students residing in the school participated in research from 2007 to 2008, which involved more actively in the development of an extension project for the implementation of recreational and leisure experiences in that institution. The main instruments used for the construction of data collection were: participant observation, questionnaire, interview, game sand and photographs. The process of data analysis with the ethnofenomenological principles emphasized the following points: experientiality, indexicality, reflexivity, self-organizability, adoptability, archetypal and humanescenciality. New meanings of ludopoietic flowering of seed "party school" were revealed, and you can see the emergence of autopoietic leisure as a big green tree, able to sprout in soil properly fertilized to produce wonderful fruit of joie de vivre

The cyanobacterial genus Cyanoarbor Wang (Chroococcales, Entophysalidaceae) and its occurrence in Brazil

The new cyanobacterial species Cyanoarbor violascens was found and described from subaerophytic habitats (wet lateritic soils) in the northwest region of São Paulo State, Brazil. The phenotypic generic features of the population were confirmed and the genus Cyanoarbor Wang 1989 was revised with four species recognized. Cyanoarbor rupestris Wang was first described from subaerophytic habitats in China. Cyanoarbor violascens Branco sp. nov. is here described from subaerophytic habitats (wet lateritic soils) in the northwest region of São Paulo State, Brazil, differing from other species by violet-coloured sheaths, cell sizes and ecotopic preference. Additionally, material previously identified as Chlorogloea cf. microcystoides from Nepal was recognized as belonging to Cyanoarbor and is here described as C. himalayensis M. Watanabe et Komdrek sp. nov. Chlorogloea gessneri Schiller is transferred to the genus Cyanarbor, as C. gessneri (Schiller) nov. comb. All four species can be differentiated based on a combination of morphological characters and biotopic preferences. Descriptions and an identification key of the four species of this genus are provided.

Ocorrência de inibidores de fator de coagulação em pacientes hemofílicos atendidos no hemocentro regional de Maringá-PR

Pós-graduação em Pesquisa e Desenvolvimento (Biotecnologia Médica) - FMB

Cartas schillerianas: a conciliação entre a dimensão estética e política

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

O lúdico e seus desdobramentos na poesia de Jacques Prévert e Mario Quintana

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

A formação estética: fundamentação filosófica e ensino

Pós-graduação em Educação - FFC

Faces do trágico na personagem Miguel dos Santos Prazeres da tetralogia monteiriana

O objetivo a ser alcançado na dissertação Faces do Trágico na Personagem Miguel dos Santos Prazeres da Tetralogia Monteiriana é apontar, mediante estudo de três das quatro obras que compõem a tetralogia, as características que fazem da personagem Miguel um herói trágico. Para tal escopo, será feita uma análise bibliográfica em que se congregam várias áreas do saber. A filosofia, assim como a história, embasa o trabalho servindo de sustentáculo a análise realizada. A sociologia também auxilia essa pesquisa na medida em que a investigação se estende a uma personagem localizada no tempo e em um espaço social.Quanto à literatura e crítica literária são referências necessárias por se tratar de um trabalho estético. Dentre os teóricos que foram utilizados, estão Aristóteles, Immanuel Kant, Walter Benjamin, Herbert Marcuse, Friedrich Schiller e Friedrich Nietzsche, Antonio Candido, Georg Hegel, Luiz Costa Lima, Georg Lukács, Roberto Machado, Michel Maffesoli, Octávio Ianni, Benedito Nunes, Anthony Giddens, etc. Pretende-se ainda que essa exposição seja veiculada a partir da inserção das obras dentro do contexto histórico e político da Ditadura Militar ocorrida no Brasil entre os anos de 1964 e 1985. Destaque-se que, a condição do estado de exceção, vivenciada pelo país, não representa apenas uma questão metodológica, mas concorre decisivamente para a consequente tragicidade de Miguel dos Santos Prazeres.

As teorias do jogo infantil de Vygotsky e Winnicott: uma análise intersubjetiva

Pós-graduação em Psicologia - FCLAS

Observation of the rare B-s(0)->mu(+)mu(-) decay from the combined analysis of CMS and LHCb data

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Studies on the Helminth Fauna of Alaska. XXVII. The Occurrence of Larvae of Trichinella spiralis in Alaskan Mammals

In 1948 much interest in trichinosis in arctic regions was aroused, particularly by the findings of Thorborg et al. (1948), who investigated serious outbreaks occurring among the Eskimo of West Greenland during 1947. Consequently, with the founding of the Arctic Health Research Center in the autumn of 1948, a study of trichinosis in Alaska was the first project to be initiated by the Zoonotic Disease Section (formerly Animal-borne Disease Section) of this Center. Field work was begun in January, 1949, and a preliminary note on trichinosis in Alaskan mammals was published by Brandly and Rausch (1950). The subject of trichinosis in arctic regions was reviewed by Connell (1949). The survey to determine the prevalence of T. spiralis in mammals in Alaska was terminated in the spring of 1953; this paper reports the results of this work.

The Myth of the Rational Market: Nudging Each Other Away from Fool’s Gold

A flurry of media commentary and several new books are focused on the recent financial crisis and near economic collapse. A Newsweek article by Zakaria (2009), “Greed is Good (To a Point),” suggests reconsidering the role of greed in capitalism. This is also the theme in Fools Gold (Tett, 2009), a story about the way derivatives markets have evolved: showing greed at its worst. In many ways this is the core source of the current set of problems. In some sense, these perspectives are integrated in The Myth of the Rational Market by Fox (2009), who traces the thinking on the efficient market hypothesis, now understood for what it is: a myth. Both books are based in large part on interviews with major players in the crisis. There are also books drawing mainly on science, but still quite accessible to general readers, as represented in Nudge by Thaler and Sunstein (2008). Both have done extensive research on human foibles in economic choice. There is also Animal Spirits (Akerlof and Schiller, 2009), a book about what Keynesian economics is really about, a look at human forces at work. Akerlof is a Nobel prize winner in economics, who before this has pointed to the problems with presuming rationality in real markets. Schiller is one of the few economists who predicted these events.

Leishmania Promastigotes Lack Phosphatidylserine but Bind Annexin V upon Permeabilization or Miltefosine Treatment

The protozoan parasite Leishmania is an intracellular pathogen infecting and replicating inside vertebrate host macrophages. A recent model suggests that promastigote and amastigote forms of the parasite mimic mammalian apoptotic cells by exposing phosphatidylserine (PS) at the cell surface to trigger their phagocytic uptake into host macrophages. PS presentation at the cell surface is typically analyzed using fluorescence-labeled annexin V. Here we show that Leishmania promastigotes can be stained by fluorescence-labeled annexin V upon permeabilization or miltefosine treatment. However, combined lipid analysis by thin-layer chromatography, mass spectrometry and 31 P nuclear magnetic resonance (NMR) spectroscopy revealed that Leishmania promastigotes lack any detectable amount of PS. Instead, we identified several other phospholipid classes such phosphatidic acid, phosphatidylethanolamine; phosphatidylglycerol and phosphatidylinositol as candidate lipids enabling annexin V staining.

Biomimese biologischer Membranen: Konzeptionierung, Synthese und biophysikalische Charakterisierung einer Hierarchie festkörpergestützter Mimikry biologischer Membranen

Im Rahmen dieser Arbeit wurden drei neue Modelle zur funktionellen Mimiese biologischer Membranen im Bereich der Bionanotechnologie entwickelt. Um den Rahmen der notwendigen Faktoren und Komponenten für biomimetische Membranmodelle abzustecken, wurde das biologische Vorbild im Bezug auf Zusammensetzung, Organisation und Funktion analysiert. Die daraus abgeleiteten Erkenntnisse erlauben das Erreichen von biologisch relevanten Membranwiderständen im Bereich von mehreren MOhm cm2 und eine gute lokale Fluidität. Ein weiteres Ziel dieser Arbeit war die Entwicklung einer Hierachie unterschiedlich stark von der Festkörperoberfläche entkoppelter Membranen zur Vergrößerung des submembranen Raumes. Diese Ziele konnten realisiert werden. Das auf archaealen Etherlipiden basierende DPTL-System wurde analog dem biologischen Vorbild stereoselektiv synthetisiert und ist in der Lage die Membran bei maximaler Elongation des TEG-Spacers mit mehr als 2 nm von der Oberfläche zu entkoppeln. Die erzielten Wiederstände liegen im hohen ein- bis zweistelligen MOhm-Bereich, die Kapazität entspricht mit 0,5 µF cm-2 ebenfalls dem Wert biologischer Membranen. Die Membraneigenschaften wurden mit Hilfe von SPS, EIS, IR-Spektroskopie, QCM, AFM und Kontaktwinkelmessungen charakterisiert. Die Funktionalität und lokale Fluidität der DPTL-Membran konnte anhand des Valinomycin vermittelten K+-Transports über die Membran gezeigt werden. Fluide Elektroden oder laterale Verdünnung mit TEGL erlauben den Einbau größerer Ionenkanäle. Lipo-Glycopolymere (LGP) mit unterschiedlichen Kettenlängen wurden mit Hilfe der kontrollierten radikalischen Polymerisation mit einer PD < 1.2 synthetisiert. Es zeigte sich, daß die Vororientierung der LGPs auf dem LB-Trog, gefolgt von einem LB-Übertrag auf einen funktionalisierten Träger mit photoreaktivem SAM, nach Belichten des Systems zu einer verlässlichen kovalenten Anbindung der supramolekularen LGP-Architektur führt. Da die Lipo-Glycopolymerketten am Glycopolymerterminus nur mit oberflächennahen Repetiereinheiten an die photoaktivierte Oberfläche binden, sind sie in der Lage Oberflächenrauhigkeiten des Festkörpersubstrates auszugleichen. Die photochemische Immobilisierung von funktionell orientierten supramolekularen LGP-Architekturen auf Goldoberflächen resultiert in tBLMs mit großen vertikalen Enkopplungen der Membran von der Festkörperoberfläche (>8 nm). Der funktionelle Ionentransport von Kaliumionen durch Valinomycin zeigt eine ausreichende lokale Fluidität der Membran die mit einem guten Membranwiderstand (mehrere MOhm) kombiniert ist. Große Membran-Oberflächenentkopplungen konnten mit Hilfe plasmapolymerisierter elektrophiler Polymere erreicht werden. Filmdicken von 50 nm sind mit homogener Oberfläche und Rauhigkeiten im Bereich von Nanometern möglich. Das System zeigt interessante fluide Eigenschaften mit guten Erholungsraten bei FRAP-Experimenten (Diffusionskonstanten von etwa 17 mikro m2 s-1). Die elektrischen Eigenschaften liegen mit Widerständen von wenigen kOhm unterhalb der für gute Membranmimikrie notwendigen Werte. Erstmalig konnte gezeigt werden, daß mit Hilfe dieser Methode inerte Polymere/Plastikträger (zum Beispiel Polypropylen und TOPAS) in effizienter Weise kovalent mit reaktiven Polymeroberflächen modifiziert werden können (Anwendung als DNA-Chip ist beschrieben).