731 research outputs found

    The Three-Year Plan and the Government’s Economic Action Plan: a comparative analysis of their short term stabilisation policies

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    O presente artigo tem por objetivo analisar as políticas de estabilização de curto prazo propostas pelo Plano Trienal (1962) e pelo Programa de Ação Econômica do Governo (1964) através da comparação das principais medidas implementadas e dos resultados alcançados pelos dois planos. No caso, pretende-se mostrar que os planos tinham semelhanças, sendo a política salarial do PAEG o principal ponto de distinção. Nesse contexto, as grandes diferenças de desempenho foram devidas à incapacidade do Trienal – em função dos turbulentos contextos interno e externo - de equacionar os problemas do conflito distributivo e do estrangulamento externo. O PAEG, por sua vez, equacionou os dois problemas, mas resolveu o conflito distributivo através de uma solução regressiva e, no caso do estrangulamento externo, obteve uma ajuda norte-americana com a qual o Plano Trienal não pôde contar.This work discusses the short term stabilisation policies implemented by two plans – Three-Year Plan (Trienal) of 1962) and the Government’s Economic Action Programme(PAEG) of 1964 – in order to compare their main measures and results. It is intended to show that these plans had similarities being PAEG’s wage policy the main point of difference. In this context, their performance differences were due to the turbulent internal and external contexts that the Three-Year Plan faced and that left it unable to solve the problems related to the distributive conflict and the external constraint. The Government’s Economic Action Plan solved these problems, but the solution employed in terms of the conflicting claims was a regressive one and the external constraint was overcome with a help of US authorities that was not offered to the Three-Year Plan

    Alguns fatos estilizados sobre choques externos e surtos inflacionários no Brasil, 1951-1985

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    This paper studies the episodes of inflation upsurge in Brazil from 1951 to 1985, a period wherein Brazilian inflation rates were among the highest in the world. It identifies the episodes of inflation upsurge within this period and analyzes whether they were concomitant with and/or preceded by some type of external shock (exchange rate devaluations and/or commodity price shocks). Based on this relationship this paper identifies eight episodes of inflation upsurge and shows that seven out of these eight episodes followed such pattern. We show also that such analysis is strongly associated with the traditional structuralist Latin American inflation theory.O presente artigo estuda as causas do aumento da inflação no Brasil de 1951 a 1985, período em que as taxas de inflação brasileiras estiveram entre as mais altas do mundo. Para tanto, identifica os episódios de surto inflacionário no Brasil nesse período e observa se eles estiveram relacionados a fatores de pressão de custos, notadamente choques externos (desvalorizações cambiais e / ou choques de preços de commodities. Observa-se que sete dentre os oito episódios de surto inflacionário identificados no período foram precedidos ou concomitantes a alguma forma de choque externo. Mostramos também que essa análise é profundamente associada com a tradição estruturalista Latino Americana em termos de interpretação do fenômeno inflacionário

    An estimate of the number of tropical tree species

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    The high species richness of tropical forests has long been recognized, yet there remains substantial uncertainty regarding the actual number of tropical tree species. Using a pantropical tree inventory database from closed canopy forests, consisting of 657,630 trees belonging to 11,371 species, we use a fitted value of Fisher’s alpha and an approximate pantropical stem total to estimate the minimum number of tropical forest tree species to fall between ∼40,000 and ∼53,000, i.e. at the high end of previous estimates. Contrary to common assumption, the Indo-Pacific region was found to be as species-rich as the Neotropics, with both regions having a minimum of ∼19,000–25,000 tree species. Continental Africa is relatively depauperate with a minimum of ∼4,500–6,000 tree species. Very few species are shared among the African, American, and the Indo-Pacific regions. We provide a methodological framework for estimating species richness in trees that may help refine species richness estimates of tree-dependent taxa

    Large Scale Searches for Brown Dwarfs and Free-Floating Planets

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    Searches of large scale surveys have resulted in the discovery of over 1000 brown dwarfs in the Solar neighbourhood. In this chapter we review the progress in finding brown dwarfs in large datasets, highlighting the key science goals, and summarising the surveys that have contributed most significantly to the current sample.Comment: Accepted to appear in the Handbook of Exoplanets (Springer); Editors: Hans J. Deeg & Juan Antonio Belmont

    Photography-based taxonomy is inadequate, unnecessary, and potentially harmful for biological sciences

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    The question whether taxonomic descriptions naming new animal species without type specimen(s) deposited in collections should be accepted for publication by scientific journals and allowed by the Code has already been discussed in Zootaxa (Dubois & Nemésio 2007; Donegan 2008, 2009; Nemésio 2009a–b; Dubois 2009; Gentile & Snell 2009; Minelli 2009; Cianferoni & Bartolozzi 2016; Amorim et al. 2016). This question was again raised in a letter supported by 35 signatories published in the journal Nature (Pape et al. 2016) on 15 September 2016. On 25 September 2016, the following rebuttal (strictly limited to 300 words as per the editorial rules of Nature) was submitted to Nature, which on 18 October 2016 refused to publish it. As we think this problem is a very important one for zoological taxonomy, this text is published here exactly as submitted to Nature, followed by the list of the 493 taxonomists and collection-based researchers who signed it in the short time span from 20 September to 6 October 2016

    Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s = 7 TeV

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    Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript −1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio

    Search for stop and higgsino production using diphoton Higgs boson decays

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    Results are presented of a search for a "natural" supersymmetry scenario with gauge mediated symmetry breaking. It is assumed that only the supersymmetric partners of the top-quark (stop) and the Higgs boson (higgsino) are accessible. Events are examined in which there are two photons forming a Higgs boson candidate, and at least two b-quark jets. In 19.7 inverse femtobarns of proton-proton collision data at sqrt(s) = 8 TeV, recorded in the CMS experiment, no evidence of a signal is found and lower limits at the 95% confidence level are set, excluding the stop mass below 360 to 410 GeV, depending on the higgsino mass
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