Search results for "America"

La crisis que hace temblar al capitalismo

2008

En torno al humorismo de Augusto Monterroso

2013

Augusto Monterroso e la minifinzione ispanoamericana

2007

The author tries to explain the mini-text in relation to the so called "post-modern" condition by resorting -in particular- to the notion of "fractal". This term is taken from the scientific language and distinguishes itself from the notion of "detail", which would clearly refer to a modern vision of the text. Moving from the realm of science to the literary domain, it is inevitable to think of the deconstruction of the narrative canon not so much to negate it as to explore and exploit its creative potentialities in the form of shards, fragments, which the necessary extension of the traditional novel has suffocated since its origine. This outlook implies, in general, an ironical fre-reading…

Multiple aspects of plasticity in clutch size vary among populations of a globally-distributed songbird.

2013

Plasticity in life-history characteristics can influence many ecological and evolutionary phenomena, including how invading organisms cope with novel conditions in new locations or how environmental change affects organisms in native locations. Variation in reaction norm attributes is a critical element to understanding plasticity in life history, yet we know relatively little about the ways in which reaction norms vary within and among populations. We amassed data on clutch size from marked females in eight populations of house sparrows (Passer domesticus) from North America and Europe. We exploited repeated measures of clutch size to assess both the extent of within-individual phenotypic …

Avocado “born in Sicily”, gli agricoltori scommettono su questa produzione

2021

In questo lavoro è stato possibile mettere a confronto la qualità dei frutti di avocado Born in Sicily e di quelli Imported. I risultati ottenuti evidenziano per i frutti raccolti in Sicilia valori più elevati del contenuto di sostanza grassa, di alcune vitamine e minerali rispetto a quelli importati, indicando nell’avocado isolano un frutto ricco di componenti dall’alto valore nutrizionale.

Operator splitting methods for American option pricing

2004

Abstract We propose operator splitting methods for solving the linear complementarity problems arising from the pricing of American options. The space discretization of the underlying Black-Scholes Scholes equation is done using a central finite-difference scheme. The time discretization as well as the operator splittings are based on the Crank-Nicolson method and the two-step backward differentiation formula. Numerical experiments show that the operator splitting methodology is much more efficient than the projected SOR, while the accuracy of both methods are similar.

Genetic variability of Spodoptera frugiperda Smith (Lepidoptera: Noctuidae) populations from Latin America is associated with variations in susceptib…

2006

ABSTRACT Bacillus thuringiensis strains isolated from Latin American soil samples that showed toxicity against three Spodoptera frugiperda populations from different geographical areas (Mexico, Colombia, and Brazil) were characterized on the basis of their insecticidal activity, crystal morphology, sodium dodecyl sulfate-polyacrylamide gel electrophoresis of parasporal crystals, plasmid profiles, and cry gene content. We found that the different S. frugiperda populations display different susceptibilities to the selected B. thuringiensis strains and also to pure preparations of Cry1B, Cry1C, and Cry1D toxins. Binding assays performed with pure toxin demonstrated that the differences in the …

Tensions and expression in Milos Forman’s American films

2012

Milos Forman’s American films require a plural outlook. The director has always been drawn to stories of conflicts that are essential, according to him, to study human passion. This tension, thematic as well as esthetic, allows him to show the smallest mechanisms that lead to oppression in European and American stories, providing the viewer with a lesson of anatomy that pinpoints the most invisible magnetic forces leading to power. This course is accompanied by a journey to individualism, through forces involved in the identification with attractive though realistic characters, through the rediscovery of individual freedom within primitive or regressive worlds, insisting on the necessity of…

Dimensione popolare della scultura barocca in Argentina

2017

Da sempre trascurata dalla storia dell’arte perché ritenuta negazione del formalismo, la scultura in Argentina, barocca e popolare insieme, oggi intriga gli studiosi che riscoprono nella sua struttura valenze formali, antropologiche e teologiche, in grado di significare la complessità esistenziale di quel Paese. Il presente saggio, supportato da testi documentari e critici, mette in luce la forza di un linguaggio decorativo che trae ragioni sia dalla cultura europea sia dalla civiltà sudamericana. Pertanto l’immaginario plastico non ripete moduli iberici o italiani, ma traduce una realtà altra, pregna di fede e magia, di cristianesimo e animismo.

Transition from mildly-tholeiitic to calc-alkaline suite: the case of Chichontepec volcanic centre, El Salvador, Central America

1998

Abstract The Chichontepec volcano is a Plio-Pleistocene composite volcano that erupted lavas ranging from high-alumina basalts to dacites. It experienced a caldera-forming paroxysmal eruption during the early Pleistocene. Pre-caldera lavas are mildly tholeiitic and they evolved mainly by low pressure crystal fractionation, notwithstanding the fact that most mafic lavas (low-MgO high-alumina basalts) retain traces of polybaric evolution. Conversely, post-caldera lavas, which are mainly pyroxene andesites, are clearly calc-alkaline, having evolved by open-system crystal fractionation. Sr–Nd isotopic data and trace elements characteristics indicate that the same mantle source was involved in t…