984 resultados para Argentine


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La formiga argentina (Linepithema humile) es troba entre les espècies més invasores: originària d'Amèrica del Sud, actualment ha envaït nombroses àrees arreu del món. Aquesta tesi doctoral intenta fer una primera anàlisi integrada i multiescalar de la distribució de la formiga argentina mitjançant l'ús de models de nínxol ecològic. D'acord amb els resultats obtinguts, es preveu que la formiga argentina assoleixi una distribució més àmplia que l'actual. Les prediccions obtingudes a partir dels models concorden amb la distribució actualment coneguda i, a més, indiquen àrees a prop de la costa i dels rius principals com a altament favorables per a l'espècie. Aquests resultats corroboren la idea que la formiga argentina no es troba actualment en equilibri amb el medi. D'altra banda, amb el canvi climàtic, s'espera que la distribució de la formiga argentina s'estengui cap a latituds més elevades en ambdós hemisferis, i sofreixi una retracció en els tròpics a escales globals.

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This paper explores the background to the emigration of 220 settlers from Patagonia in South America to the Northern Territory during the course of World War I. The group, which arrived in Darwin on the Kwanto Maru in 1915, comprised an unusual mixture of nationalities. The breakdown given in the passenger list and the contemporary press was 113 Spaniards, 45 Russians, 30 Italians. 28 British, I Argentinian [of British parents], 1 Frenchman, 1 Serbian and 1 Greek. Some of the 'Spaniards' were presumably Spanish speaking Argentinians but most were indeed of Spanish descent, such as the Martinez, Perez and Villalba families. Of the British amongst the group, almost all were Welsh. They came as a result of inducements held out to the Welsh amongst the party in the years immediately prior to the war by the Commonwealth Government, which administered the Northern Territory after 1911. This account provides a fascinating case study of the recruitment of immigrants to Australia, and particularly to the Northern Territory, in the early twentieth century.

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An increased incidence of retinoblastoma in some developing countries has been reported but no conclusive data are available from population-based studies at national level.

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This work explores how Argentina overcame the Great Depression and asks whether active macroeconomic interventions made any contribution to the recovery. In particular, we study Argentine macroeconomic policy as it deviated from gold-standard orthodoxy after the final suspension of convertibility in 1929. As elsewhere, fiscal policy in Argentina was conservative, and had little power to smooth output. Monetary policy became heterodox after 1929. The first and most important stage of institutional change took place with the switch from a metallic monetary regime to a fiduciary regime in 1931; the Caja de Conversión (Conversion Office, a currency board) began rediscounting as a means to sterilize gold outflows and avoid deflationary pressures, thus breaking from orthodox "mIes of the game." However, the actual injections of liquidity were small' and were not enough to fully offset the incipient monetary contractions: the "Keynes" effect was weak or negative. Rather, recovery derived from changes in beliefs and expectations surrounding the shift in the monetary and exchange-rate regime,and the delinking of gold flows and the money base. Agents perceivod a new regime, as shown by the path of consumption, investment, and estimated ex ante real interest rates: the "Mundell" effect was dominant. Notably, this change of regime predated a later, and supposedly more significant, stage of institutional reform, namely the creation of the central bank in 1935. Still, the extent of intervention was weak, and insufficient to fully offset externaI shocks to prices and money. Argentine macropolicy was heterodox in terms of the change of regime, but still conservative in terms of the tentative scope of the measures taken .

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