188 resultados para plausibility


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RESUMO Ao identificar a existência de lacuna teórica, o presente trabalho definiu como seu objetivo: Estabelecer os alicerces de uma epistéme sobre o fenômeno por meio do desenvolvimento de um arcabouço capaz de a) direcionar e dar sustentação à construção e ao desenvolvimento coletivo de uma Teoria Científica das Empresas e Participações Societárias Estatais – TEPSES, e de b) identificar elementos que viabilizem o desenvolvimento de respostas à questão aplicada central: Como devem os governos definir as missões, os critérios de desempenho e os mecanismos de governança das empresas estatais em um ambiente em mudança? Considerando sua materialidade, a relevância estratégica dessas empresas para os Estados contemporâneos, suas implicações para os processos de globalização e a administração uma ciência aplicada a demandarem nível de análise societal e abordagem multiparadigmática, o arcabouço e seus elementos proporcionaram resposta a várias inquietações e problemas expressos, alguns por mais de meio século, por autoridades no campo como Pritchett, Seidman, Sherwood, Shepherd, Aharoni, Millward, Hinds e Baumol. Oferecendo por redução fenomenológica uma definição de conceito universal para as empresas estatais e introduzindo, inter allia, os conceitos de capacidade essencial de Estado em seu intervalo – CEEi e de estatal patrimonial, que permitiram a construção de uma escala de interesses públicos; o arcabouço teórico focado rueschemeyeriano da TEPSES, constrói pontes entre os hemisférios da grande dicotomia do direito e entre aspectos de governanças pública e corporativa, por meio de tipologias lazarsfeldianas. Em suas seis dimensões iniciais e trinta e três relações o arcabouço foi aplicado por sondagem plausibilística ao caso das estatais diretas brasileiras, apresentando elevado grau de plausibilidade e qualidade, inclusive segundo critérios de Wacker. As formulações e explicitações da TEPSES oferecem respostas e possibilidades de tratamento a várias questões científicas mais amplas como: o paradoxo do conhecimento na regulação de Balleisen, a armadilha de Schneider, a dúvida de Ikeda/Mises e a reabertura da questão de adequação organizacional pelo nobel Simon; proporcionando ainda extensões a: tipologia de estruturas de governança do nobel Williamson, as concepções de sociedade prismática de Riggs, a definição da administração como ciência aplicada do nobel Simon, as formulações institucionalistas de Acemoglu e Robinson e as abordagens sobre intervenção de Estado do nobel Stiglitz. O arcabouço da TEPSES possibilita: a) a cada país, construir sua própria tipologia empírica de empresas estatais e assim geri-las a partir de respostas customizadas à questão aplicada central, analisar sua adequação como instrumento de políticas públicas e desenvolver critérios para suas privatizações; b) a gestores, pesquisadores e estudiosos de caso situar e analisar suas empresas a partir do arcabouço; c) às pesquisas pretéritas, terem seus dados reinterpretados à luz de um novo referencial e d) a todos, a possibilidade de conectarem seus trabalhos à epistéme da qual a TEPSES é alicerce e repositório. Conclui-se que o grau de relevância, em nível global, do fenômeno é na realidade muito superior à sua materialidade e ao grau de relevância atribuído inicialmente, devido à identificação de sua condição como fator empírico de capacidades de Estado, uma vez que à ausência e deficiências dessas capacidades são atribuídos colapsos e débâcles de vários Estados nacionais, que resultaram em elevadíssimos e incalculáveis custos humanos.

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The implications of technical change that directly alters factor shares are examined. Such change can lower the income of some factors of production even when it raises total output, thus offering a possible explanation for episodes of social conflict such as the Luddite uprisings in 19th century England and the recent divergence in the U. S. between wages for skilled and unskilled labor. An explanation also why underdeveloped countries do not adopt the latest technology but continue to use outmoded production methods. Total factor productivity is shown to be a misleading measure of technical progress. Share-altering technical change brings into question the plausibility of a wide class of endogenous growth models.

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The problem of scattering of neutral fermions in two-dimensional spacetime is approached with a pseudoscalar potential step in the Dirac equation. Some unexpected aspects of the solutions beyond the absence of Klein's paradox are presented. An apparent paradox concerning the uncertainty principle is solved by introducing the concept of effective Compton wavelength. Added plausibility for the existence of bound-state solutions in a pseudoscalar double-step potential found in a recent Letter is given. (C) 2003 Elsevier B.V. B.V. All rights reserved.

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The relationship between malnutrition and social support was first suggested in the mid-1990s. Despite its plausibility, no empirical studies aimed at obtaining evidence of this association could be located. The goal of the present study was to investigate such evidence. A case-control study was carried out including 101 malnourished children (weight-for-age National Center for Health Statistics/WHO 5th percentile) aged 12-23 months, who were compared with 200 well-nourished children with regard to exposure to a series of factors related to their social support system. Univariate and multiple logistic regressions were carried out, odds ratios being adjusted for per capita family income, mother's schooling, and number of children. The presence of an interaction between income and social support variables was also tested. Absence of a partner living with the mother increased risk of malnutrition (odds ratio 2.4 (95 % CI 1.19, 4.89)), even after adjustment for per capita family income, mother's schooling, and number of children. The lack of economic support during adverse situations accounted for a very high risk of malnutrition (odds ratio 10.1 (95 % CI 3.48, 29.13)) among low-income children, but had no effect on children of higher-income families. Results indicate that receiving economic support is an efficient risk modulator for malnutrition among low-income children. In addition, it was shown that the absence of a partner living with the mother is an important risk factor for malnutrition, with an effect independent from per capita family income, mother's schooling, and number of children.

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Este trabalho faz uma analogia entre os programas de pesquisa de Lakatos e a dinâmica das idéias dos estudantes em situações de sala de aula. Esta analogia revelou-se uma maneira produtiva de análise do desenvolvimento das concepções dos estudantes durante um processo de discussão. Com as condições de inteligibilidade, plausibilidade e frutibilidade de Posner et alii (1982), pudemos enriquecer a análise baseada previamente nos programas. Mostramos com um exemplo videogravado durante uma aula que a nossa abordagem pode ser efetivamente usada como um instrumento analítico para ajudar o professor a entender e melhorar os processos de ensino e de aprendizagem.

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We calculate three- and four-point functions in super Liouville theory coupled to a super Coulomb gas on world sheets with spherical topology. We first integrate over the zero mode and assume that a parameter takes an integer value. We find the amplitudes, give plausibility arguments in favor of the result, and formally continue the parameter to an arbitrary real number. Remarkably the result is completely parallel to the bosonic case.

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The tourist use of Santana cave provides a row of environmental damages, compromising partially the pristine conditions. Among the measures adopted to avoid this situation, this issue presents a contribution for the physical limits to tourist visitation and the indications for speleotouristic management. It was used the Cifuentes Carrying Capacity method and some basic principles of Visitors Impact Management Framework - VIM. The results show a Real Carrying Capacity (CCR) about 120 visits daily on the cave. The discussions raise a few hypotheses about the alteration in the method used and the temporal frequency between visitors groups, suggesting a provisional CCR of 117 and 135 visitors daily, respectively, during the week and in the weekends and holidays. The conclusions appoint the necessity of a conceptual revision in the Carrying Capacity methods, mainly about its adaptation for tourist management in caves. In the case studied, it is suggested the immediate beginning of environmental monitoring of the cave, to verify the plausibility from proposed visitation limits and the possible contributions for to mitigate the environmental impacts from speleotourism.

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

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Pós-graduação em Estudos Linguísticos - IBILCE

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Pós-graduação em Ciências da Motricidade - IBRC

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This article analyses the trend of unfair inequality in Brazil (1995-2009) using a nonparametric approach to estimate the income function. The entropy metrics introduced by Li, Maasoumi and Racine (2009) are used to quantify income differences separately for each effort variable. A Gini coefficient of unfair inequality is calculated, based on the fitted values of the non-parametric estimation; and the robustness of the estimations, including circumstantial variables, is analysed. The trend of the entropies demonstrated a reduction in the income differential caused by education. The variables “hours worked” and “labour-market status” contribute significantly to explaining wage differences imputed to individual effort; but the migratory variable had little explanatory power. Lastly, the robustness analysis demonstrated the plausibility of the results obtained at each stage of the empirical work.

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AIM: The aim of this study was to evaluate, through a systematic review of the literature, the effects of different implant surface modifications on osseointegration in diabetic subjects. METHODS: A search was performed of the PubMed database, using a combination of the following keywords: “Implant surface” OR “Dental implants” AND “Diabetes” OR “Hyperglycemia”. Papers published in English between January 1960 and November 2013 were selected. All experimental models were considered in this search, but case reports and in vitro studies were excluded from this review. RESULTS: The initial search identified 182 articles. After reading the titles and abstracts, 39 articles were selected for full reading. Finally, 4 papers were selected after evaluation of all the papers, and these papers are discussed in this review. Due to the methodological heterogeneity of the selected studies, it was not possible to perform a meta-analysis of the data. CONCLUSION: It can be concluded that although the benefits of surface modifications present in individuals with diabetes have biological plausibility, there is little evidence of the benefits of these modifications.

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Pós-graduação em Saúde Coletiva - FMB

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Abstract Background Despite new brain imaging techniques that have improved the study of the underlying processes of human decision-making, to the best of our knowledge, there have been very few studies that have attempted to investigate brain activity during medical diagnostic processing. We investigated brain electroencephalography (EEG) activity associated with diagnostic decision-making in the realm of veterinary medicine using X-rays as a fundamental auxiliary test. EEG signals were analysed using Principal Components (PCA) and Logistic Regression Analysis Results The principal component analysis revealed three patterns that accounted for 85% of the total variance in the EEG activity recorded while veterinary doctors read a clinical history, examined an X-ray image pertinent to a medical case, and selected among alternative diagnostic hypotheses. Two of these patterns are proposed to be associated with visual processing and the executive control of the task. The other two patterns are proposed to be related to the reasoning process that occurs during diagnostic decision-making. Conclusions PCA analysis was successful in disclosing the different patterns of brain activity associated with hypothesis triggering and handling (pattern P1); identification uncertainty and prevalence assessment (pattern P3), and hypothesis plausibility calculation (pattern P2); Logistic regression analysis was successful in disclosing the brain activity associated with clinical reasoning success, and together with regression analysis showed that clinical practice reorganizes the neural circuits supporting clinical reasoning.

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There have been almost fifty years since Harry Eckstein' s classic monograph, A Theory of Stable Democracy (Princeton, 1961), where he sketched out the basic tenets of the “congruence theory”, which was to become one of the most important and innovative contributions to understanding democratic rule. His next work, Division and Cohesion in Democracy, (Princeton University Press: 1966) is designed to serve as a plausibility probe for this 'theory' (ftn.) and is a case study of a Northern democratic system, Norway. What is more, this line of his work best exemplifies the contribution Eckstein brought to the methodology of comparative politics through his seminal article, “ “Case Study and Theory in Political Science” ” (in Greenstein and Polsby, eds., Handbook of Political Science, 1975), on the importance of the case study as an approach to empirical theory. This article demonstrates the special utility of “crucial case studies” in testing theory, thereby undermining the accepted wisdom in comparative research that the larger the number of cases the better. Although not along the same lines, but shifting the case study unit of research, I intend to take up here the challenge and build upon an equally unique political system, the Swedish one. Bearing in mind the peculiarities of the Swedish political system, my unit of analysis is going to be further restricted to the Swedish Social Democratic Party, the Svenska Arbetare Partiet. However, my research stays within the methodological framework of the case study theory inasmuch as it focuses on a single political system and party. The Swedish SAP endurance in government office and its electoral success throughout half a century (ftn. As of the 1991 election, there were about 56 years - more than half century - of interrupted social democratic "reign" in Sweden.) are undeniably a performance no other Social Democrat party has yet achieved in democratic conditions. Therefore, it is legitimate to inquire about the exceptionality of this unique political power combination. Which were the different components of this dominance power position, which made possible for SAP's governmental office stamina? I will argue here that it was the end-product of a combination of multifarious factors such as a key position in the party system, strong party leadership and organization, a carefully designed strategy regarding class politics and welfare policy. My research is divided into three main parts, the historical incursion, the 'welfare' part and the 'environment' part. The first part is a historical account of the main political events and issues, which are relevant for my case study. Chapter 2 is devoted to the historical events unfolding in the 1920-1960 period: the Saltsjoebaden Agreement, the series of workers' strikes in the 1920s and SAP's inception. It exposes SAP's ascent to power in the mid 1930s and the party's ensuing strategies for winning and keeping political office, that is its economic program and key economic goals. The following chapter - chapter 3 - explores the next period, i.e. the period from 1960s to 1990s and covers the party's troubled political times, its peak and the beginnings of the decline. The 1960s are relevant for SAP's planning of a long term economic strategy - the Rehn Meidner model, a new way of macroeconomic steering, based on the Keynesian model, but adapted to the new economic realities of welfare capitalist societies. The second and third parts of this study develop several hypotheses related to SAP's 'dominant position' (endurance in politics and in office) and test them afterwards. Mainly, the twin issues of economics and environment are raised and their political relevance for the party analyzed. On one hand, globalization and its spillover effects over the Swedish welfare system are important causal factors in explaining the transformative social-economic challenges the party had to put up with. On the other hand, Europeanization and environmental change influenced to a great deal SAP's foreign policy choices and its domestic electoral strategies. The implications of globalization on the Swedish welfare system will make the subject of two chapters - chapters four and five, respectively, whereupon the Europeanization consequences will be treated at length in the third part of this work - chapters six and seven, respectively. Apparently, at first sight, the link between foreign policy and electoral strategy is difficult to prove and uncanny, in the least. However, in the SAP's case there is a bulk of literature and public opinion statistical data able to show that governmental domestic policy and party politics are in a tight dependence to foreign policy decisions and sovereignty issues. Again, these country characteristics and peculiar causal relationships are outlined in the first chapters and explained in the second and third parts. The sixth chapter explores the presupposed relationship between Europeanization and environmental policy, on one hand, and SAP's environmental policy formulation and simultaneous agenda-setting at the international level, on the other hand. This chapter describes Swedish leadership in environmental policy formulation on two simultaneous fronts and across two different time spans. The last chapter, chapter eight - while trying to develop a conclusion, explores the alternative theories plausible in explaining the outlined hypotheses and points out the reasons why these theories do not fit as valid alternative explanation to my systemic corporatism thesis as the main causal factor determining SAP's 'dominant position'. Among the alternative theories, I would consider Traedgaardh L. and Bo Rothstein's historical exceptionalism thesis and the public opinion thesis, which alone are not able to explain the half century social democratic endurance in government in the Swedish case.