883 research outputs found
Angerona: Fatos e ficções sobre a fazenda de café de Cornelio Souchay e Ursula Lambert em Cuba
O artigo conta a história de Cornelio Souchay, um imigrante alemão que chega a Havana em 1807, vive uma relação amorosa com Ursula Lambert, uma mulata haitiana livre e se torna proprietário de uma fazenda de café exemplar, à qual dá o nome de Angerona, deusa do silêncio. O texto baseia-se em relatos, documentos, cartas de viajantes, filme e romances de autoria de homens ou mulheres, que visitaram Angerona em épocas diferentes. Ao contrário do filme “Roble de Olor” (2003) que festeja a relação amorosa de Cornelio com Ursula, o autor se interessa pela reconstrução da vida do imigrante e da fazenda, cujas ruínas transformadas em monumento nacional pelo Patrimônio Histórico cubano. Com efeito, a descrição minuciosa de diversos aspectos da fazenda, da casa do senhor e de sua relação com os escravos, não tem outro objetivo senão evidenciar o quanto o humanismo rígido de Cornélio e seu calculo racional contribuíram para a maior eficiência do sistema de dominação da fazenda
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Fibre optic humidity sensor designed for highly alkaline environments
This paper presents the design of a sensor packaging for a Fibre Bragg Grating (FBG) based fibre optic humidity sensor. The evaluation of the developed fibre optic sensor was performed under experimental conditions and verified its capability to withstand highly alkaline environments. Therefore, the sensor can be applied to monitor the concrete humidity level and thus to indicate the maintenance of concrete structures
Max Weber: family history, economic policy, exchange reform
This article suggests that Weber’s cosmopolitandimension has much to do with his extended family history,which has been relatively neglected even though it influencedhis world view and oeuvre in significant respects. It first sketchesthe cosmopolitan family context and then turns to Weber’spolitical and scholarly agenda, especially the little-known storyof his strong political and professional engagement in the battleover exchange reform in the eighteen-nineties.L’auteur suggère que la dimension cosmopolite de Weber estassociée à son histoire familiale, qui a été relativement negligée malgrél’influence significative qu’elle eut sur sa vision du monde et son oeuvre.Premièrement, l’article trace le contexte familiale cosmopolite; ensuiteil se penche sur l’agenda politique et académique de Weber,particulièrement l’histoire méconnue de son engagement politique etprofessionnel dans la bataille pour la réforme du change dans les années90 du XIX siècle.O autor sugere que a dimensão cosmopolita de Weber estáassociada à sua história familiar, que tem sido relativamentenegligenciada embora tenha influenciado sua visão de mundo e suaobra em aspectos significativos. Na primeira parte, esboça o contextofamiliar cosmopolita, e depois examina a agenda política e acadêmicade Weber, particularmente a história pouco conhecida de seuenvolvimento político e profissional na batalha pela reforma cambialnos anos 90 do século XIX
The Political Context of Max Weber's Contribution on the German Economy in the Encyclopedia Americana
Für die Encyclopedia Americana verfasste MaxWeber 1905 einen Beitrag über die deutsche Wirtschaft, der bis vor kurzem unbekannt war. Hugo Münsterberg, der Herausgeber der dreiundzwanzig Beiträge über Deutschland, rekrutierte als zweiten Ökonomen Ernst von Halle, Admiral Tirpitz' Propagandachef für den kaiserlichen Schlachtflottenbau. Damit hatte er zwei hervorragende Verfechter einer imperialistischen Weltpolitik ausgewählt. Neben seinem Beitrag zum Gelehrtenkongreß in St. Louis 1904 gab dies Weber eine breitere Gelegenheit, der Rhetorik seiner Weltmachtpolitik nüchterne wirtschaftspolitische Argumente hinzuzufügen: Der rasch wachsende deutsche Industriestaat müsse in die Weltwirtschaft integriert werden, und zwar durch gemäßigte Zölle und Handelsverträge. Dies in Opposition zur konservativen Hochzollpolitik und ihrem Streben nach Autarkie, aber auch zu Joseph Chamberlains großer Kampagne, das britische Empire mit Schutzzöllen 'einzuhegen'. Mit Hilfe ausführlicher statistischer Materialien ermöglicht Weber dem Leser, die agrarischen und industriellen Entwicklungen Deutschlands und der USA, aber auch Englands und Frankreichs zu vergleichen. Er hält die deutschen und amerikanischen Zollschranken für überwindbar, warnt aber vor zunehmenden deutsch-englischen Spannungen. Seine Argumentation paßte zu Hugo Münsterbergs kulturpolitischer Agenda, die ein Rapprochement zwischen Deutschland und den USA durch die Förderung des Deutschtums und die Minderung der "angelsächsischen Hegemonie" beabsichtigte. Die geschichtliche Entwicklung ließ am Ende sowohl Münsterbergs Kulturpolitik als auch Webers Weltpolitik scheitern.In 1905 Weber wrote two articles, until recently unknown, on the German economy for the Encyclopedia Americana. Hugo Münsterberg, editor of the twenty-three articles on Germany, chose as second economist Ernst von Halle, Admiral Tirpitz's propaganda chief for Imperial Germany's naval expansion program. Thus he chose two outstanding advocates of an imperialist Weltmachtpolitik. The request gave Weber a larger opportunity than at St. Louis in 1904 to juxtapose his realistic economic policies to his aggressive rhetoric. He advocates the integration of Germany's rapidly expanding economy into the world economy by means of moderate tariffs and trade treaties. Presenting a great amount of statistical information, Weber compares the agrarian and industrial development of Germany and America, and, to a lesser extent, England and France. He considers American and German tariff barriers surmountable, but warns of exacerbating Anglo-German tensions. His reasoning fitted Münsterberg's cultural agenda, which aimed at a German-American rapprochement through promoting Deutschtum und weakening "Anglo-Saxon hegemony.
Efficacy and safety of the anti-IL-12/23 p40 monoclonal antibody, ustekinumab, in patients with active psoriatic arthritis despite conventional non-biological and biological anti-tumour necrosis factor therapy: 6-month and 1-year results of the phase 3, multicentre, double-blind, placebo-controlled, randomised PSUMMIT 2 trial
Objective: Assess ustekinumab efficacy (week 24/week 52) and safety (week 16/week 24/week 60) in patients with active psoriatic arthritis (PsA) despite treatment with conventional and/or biological anti-tumour necrosis factor (TNF) agents.
Methods: In this phase 3, multicentre, placebo-controlled trial, 312 adults with active PsA were randomised (stratified by site, weight (≤100 kg/>100 kg), methotrexate use) to ustekinumab 45 mg or 90 mg at week 0, week 4, q12 weeks or placebo at week 0, week 4, week 16 and crossover to ustekinumab 45 mg at week 24, week 28 and week 40. At week 16, patients with <5% improvement in tender/swollen joint counts entered blinded early escape (placebo→45 mg, 45 mg→90 mg, 90 mg→90 mg). The primary endpoint was ≥20% improvement in American College of Rheumatology (ACR20) criteria at week 24. Secondary endpoints included week 24 Health Assessment Questionnaire-Disability Index (HAQ-DI) improvement, ACR50, ACR70 and ≥75% improvement in Psoriasis Area and Severity Index (PASI75). Efficacy was assessed in all patients, anti-TNF-naïve (n=132) patients and anti-TNF-experienced (n=180) patients.
Results: More ustekinumab-treated (43.8% combined) than placebo-treated (20.2%) patients achieved ACR20 at week 24 (p<0.001). Significant treatment differences were observed for week 24 HAQ-DI improvement (p<0.001), ACR50 (p≤0.05) and PASI75 (p<0.001); all benefits were sustained through week 52. Among patients previously treated with ≥1 TNF inhibitor, sustained ustekinumab efficacy was also observed (week 24 combined vs placebo: ACR20 35.6% vs 14.5%, PASI75 47.1% vs 2.0%, median HAQ-DI change −0.13 vs 0.0; week 52 ustekinumab-treated: ACR20 38.9%, PASI75 43.4%, median HAQ-DI change −0.13). No unexpected adverse events were observed through week 60.
Conclusions: The interleukin-12/23 inhibitor ustekinumab (45/90 mg q12 weeks) yielded significant and sustained improvements in PsA signs/symptoms in a diverse population of patients with active PsA, including anti-TNF-experienced PsA patients
Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton plus jets final state with ATLAS
A measurement is presented of the inclusive production
cross-section in collisions at a center-of-mass energy of TeV
using data collected by the ATLAS detector at the CERN Large Hadron Collider.
The measurement was performed in the lepton+jets final state using a data set
corresponding to an integrated luminosity of 20.3 fb. The cross-section
was obtained using a likelihood discriminant fit and -jet identification was
used to improve the signal-to-background ratio. The inclusive
production cross-section was measured to be
pb assuming a top-quark mass of 172.5 GeV, in good agreement with the
theoretical prediction of pb. The production cross-section in the fiducial region
determined by the detector acceptance is also reported.Comment: Published version, 19 pages plus author list (35 pages total), 3
figures, 2 tables, all figures including auxiliary figures are available at
http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2013-06
A uniform asteroseismic analysis of 22 solar-type stars observed by Kepler
Asteroseismology with the Kepler space telescope is providing not only an
improved characterization of exoplanets and their host stars, but also a new
window on stellar structure and evolution for the large sample of solar-type
stars in the field. We perform a uniform analysis of 22 of the brightest
asteroseismic targets with the highest signal-to-noise ratio observed for 1
month each during the first year of the mission, and we quantify the precision
and relative accuracy of asteroseismic determinations of the stellar radius,
mass, and age that are possible using various methods. We present the
properties of each star in the sample derived from an automated analysis of the
individual oscillation frequencies and other observational constraints using
the Asteroseismic Modeling Portal (AMP), and we compare them to the results of
model-grid-based methods that fit the global oscillation properties. We find
that fitting the individual frequencies typically yields asteroseismic radii
and masses to \sim1% precision, and ages to \sim2.5% precision (respectively 2,
5, and 8 times better than fitting the global oscillation properties). The
absolute level of agreement between the results from different approaches is
also encouraging, with model-grid-based methods yielding slightly smaller
estimates of the radius and mass and slightly older values for the stellar age
relative to AMP, which computes a large number of dedicated models for each
star. The sample of targets for which this type of analysis is possible will
grow as longer data sets are obtained during the remainder of the mission.Comment: 13 pages, 5 figures in the main text, 22 figures in Appendix.
Accepted for publication in Ap
Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s√=8 TeV with the ATLAS detector
The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. The search is based on proton-proton collision data at a centre-of-mass energy s√=8 TeV collected in 2012, corresponding to an integrated luminosity of 20 fb−1. No significant excess above the Standard Model expectation is observed. Limits are set on supersymmetric particle masses for various supersymmetric models. Depending on the model, the search excludes gluino masses up to 1.32 TeV and squark masses up to 840 GeV. Limits are also set on the parameters of a minimal universal extra dimension model, excluding a compactification radius of 1/R c = 950 GeV for a cut-off scale times radius (ΛR c) of approximately 30
Measurement of the charge asymmetry in dileptonic Decays of top quark pairs in pp collisions at √ s = 7 TeV using the ATLAS detector
A measurement of the top-antitop (tt) charge asymmetry is presented using data corresponding to an integrated luminosity of 4.6 fb −1 of LHC pp collisions at a centre- of-mass energy of 7 TeV collected by the ATLAS detector. Events with two charged leptons, at least two jets and large missing transverse momentum are selected. Two observables are studied: A tt/C, based on the reconstructed tt final state. The asymmetries are measured to be
A ll/C = 0.024 +/- 0.015 (stat.) +/- 0.009 (syst.)
Att/C = 0.021 +/- 0.025 (stat.) +/- 0.017 (syst.)
The measured values are in agreement with the Standard Model predictions
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