28,483 research outputs found
Corrigendum to "Applying and validating the PTVA-3 Model at the Aeolian Islands, Italy: assessment of the vulnerability of buildings to tsunamis" published in Nat. Hazards Earth Syst. Sci., 10, 1547–1562, 2010
F. Dall'Osso1,2,4, A. Maramai3, L. Graziani3, B. Brizuela3, A. Cavalletti2,4, M. Gonella2,4, and S. Tinti5 1CIRSA, Interdepartmental Centre for Environmental Sciences Research, University of Bologna, via S. Alberto 163, 48100 Ravenna, Italy 2IDRA, Environmental Research Institute, via Kennedy 37, 44100 Ferrara, Italy 3INGV, Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143 Roma, Italy 4Med Ingegneria S.r.l., Environmental Engineering, via P. Zangheri 16, 48124 Ravenna, Italy 5University of Bologna, Department of Physics, Viale Carlo Berti Pichat 8, 40127 Bologna, Ital
Openness and optimal monetary policy
We show that the composition of imports has important implications for the optimal volatility of the exchange rate. Using input-output data for 25 countries we document substantial differences in the import and non-tradable content of final demand components, and in the role played by imported inputs in domestic production. We build a business cycle model of a small open economy to discuss how the problem of the optimizing policy-maker changes endogenously as the composition of imports and of final demand is altered. Contrary to models where steady state trade openness is entirely characterized by home bias, we find that trade openness is a very poor proxy of the welfare impact of alternative monetary policies. Finally, we quantify the loss from an exchange rate peg relative to the Ramsey policy conditional on the composition of imports, using parameter values that are estimated from OECD input-output tables data. We find that the main determinant of the losses is the share of non-traded goods in final demand. JEL Classification: E52, E31, F02, F41Exchange Rate Regimes, international trade, Non-tradable Goods, Optimal Policy
Monetary policy, expected inflation and inflation risk premia
Within a New Keynesian business cycle model, we study variables that are normally unobservable but are very important for the conduct of monetary policy, namely expected inflation and inflation risk premia. We solve the model using a third-order approximation that allows us to study time-varying risk premia. Our model is consistent with rejection of the expectations hypothesis and the business-cycle behaviour of nominal interest rates in US data. We find that inflation risk premia are very small and display little volatility. Hence, monetary policy authorities can use the difference between nominal and real interest rates from index-linked bonds as a proxy for inflation expectations. Moreover, for short maturities current inflation is a good predictor of inflation risk premia. We also find that short-term real interest rates and expected inflation are significantly negatively correlated and that short-term real interest rates display greater volatility than expected inflation. These results are consistent with empirical studies that use survey data and index-linked bonds to obtain measures of expected inflation and real interest rates. Finally, we show that our economy is consistent with the Mundell-Tobin effect: increases in inflation are associated with higher nominal interest rates, but lower real interest rates.term structure of interest rates; monetary policy; expected inflation; inflation risk premia; Mundell-Tobin effect
Cómo he traducido Proust
Translation into Spanish of Natalia Ginzburg's ?Come ho tradotto Proust?, published in La Stampa, 11th december 1963, with an introduction taken from Albanese, A. and Nasi, F. (eds.). (2015). L?artefice aggiunto: riflessioni sulla traduzione in Italia: 1900-1975. Ravenna, Longo, pp. 262-265
Una faena fÃsica y psicológica de excavador
Translation into Spanish of Luciano Bianciardi's ?Una fatica fisica e psicologica da sterratore?, published in Notizie, 5th february 1961, with an introduction taken from Albanese, A. and Nasi, F. (eds.). (2015). L?artefice aggiunto: riflessioni sulla traduzione in Italia: 1900-1975. Ravenna, Longo, pp. 246-249
Ilustradores, actores y traductores
Translation into Spanish of Luigi Pirandello's ?Illustratori, autori, traduttori?, a text published in 1908 in Arte e scienza (Roma: W. Modes, pp. 76-108), with an introduction taken from Albanese, A. and Nasi, F. (eds.). (2015). L?artefice aggiunto: riflessioni sulla traduzione in Italia: 1900-1975. Ravenna, Longo, pp. 49-46
Naturalización y absorción
Translation into Spanis of Emilio Cecchi's 'Naturalizzazione e assorbimento', published in Del tradurre, 1st january 1929, in Pegaso, I, pp. 93-95, with an introduction taken from Albanese, A. and Nasi, F. (eds.). (2015). L?artefice aggiunto: riflessioni sulla traduzione in Italia: 1900-1975. Ravenna, Longo, pp. 88-92
Design of Wireless Sensor Nodes for Structural Health Monitoring applications
Enabling low-cost distributed monitoring, wireless sensor networks represents an interesting solution for the implementation of
structural health monitoring systems. This work deals with the design of wireless sensor networks for health monitoring of civil
structures, specifically focusing on node design in relation to the requirements of different structural monitoring application classes.
Design problems are analysed with specific reference to a large-scale experimental setup (the long-term structural monitoring of
the Basilica S. Maria di Collemaggio, L’Aquila, Italy). Main limitations emerged are highlighted, and adopted solution strategies
are outlined, both in the case of commercial sensing platform and of full custom solutions
Multi-Sectoral Cascading and Price Dynamics - A Bayesian Econometric Evaluation
Recent evidence by Bils and Klenow (2004) and Klenow and Kryvstov (2003) shows that the average price duration for US CPI-basket goods is in the order of one to two quarters, challenging the monetary business cycle research to try and explain how short price durations can nevertheless generate a large degree of aggregate inflation persistence. We empirically test the relevance of a cascading structure of production as an explanation for short price durations and large aggregate inflation persistence. The final good is produced through a chain of intermediate goods, which undergo several processing stages. At each stage the price is set in nominal terms, and can be adjusted only at random intervals. Though each individual price is adjusted frequently, because the final good price embeds the intermediate price movements, it will turn out to have a large degree of stickiness. We estimate the model using Bayesian techniques to evaluate the relative role of indexation, pricing contracts length, and cascading production structure in the US postwar data. The estimation shows that short pricing contracts within the standard Calvo pricing mechanism are compatible with large inflation persistence, and inflation indexation turns out to play a much less relevant role - in other words, it ends up being a reduced-form model for the cascading production structureInflation Inertia, Monetary Policy, Bayesian Estimation, Multisectoral Cascading
Comparative karyotype studies in species of Miltinea Ravenna, Phycella Lindl. and Rhodophiala C. Presl (Amaryllidaceae) from Chile
La familia Amaryllidaceae se encuentra
distribuida en diversas regiones de Chile y
Sudamérica. De los 11 géneros reconocidos
por Ravenna, al menos tres de ellos presentan
un reconocido potencial ornamental: Miltinea
Ravenna, endémico de Chile y conformado
por la especie Miltinea maulensis (Ravenna)
Ravenna, Phycella Lindley, endémico de Chile,
conformado por cuatro especies y distribuido
desde el valle de Elqui hasta la altura de la región
de Arauco y Rhodophiala C. Presl. presente en
el sur de Brasil, Uruguay, Bolivia, Argentina y
Chile conformado por un número aproximado
de 40 especies. Actualmente, la información
taxonómica tradicional para diferenciar los
géneros presentes en Chile es insuficiente.
Es por ello que se utilizó la citotaxonomÃa
como una herramienta y fuente de evidencia
taxonómica. El objetivo de esta investigación
fue realizar un estudio comparativo de los
cariotipos en representantes de tres géneros de
Amaryllidaceae que crecen en Chile con el fin
de ayudar a clarificar la posición taxonómica de
ellos. Las especies analizadas fueron: Miltinea
maulensis (Ravenna) Ravenna, Phycella
australis Ravenna, Rhodophiala araucana (Phil.)
Traub, Rhodophiala montana (Phil.) Traub, y
Rhodophiala pratensis (Poepp.) Traub. Los
resultados obtenidos indicaron que Miltinea
maulensis y Phycella australis presentan
caracterÃsticas cariológicas muy similares,
tanto en el número cromosómico, fórmula
cariotÃpica e Ãndices cromosómicos. Estas
caracterÃsticas permitirÃan considerar Miltinea
como un sinónimo de Phycella. Por último,
las tres especies de Rhodophiala analizadas
comparten caracterÃsticas citológicas muy
similares, como por ejemplo, la presencia de una
región NOR en el brazo largo del cromosoma 7,
idéntico número cromosómico e Ãndices de
asimetrÃa de los cariotipos casi iguales.The family Amaryllidaceae is widely
distributed in Chile and South America. Ravenna
recognized 11 genera and at least three of them
have ornamental value: Miltinea Ravenna,
endemic to Chile consists of only one species,
Miltinea maulensis (Ravenna) Ravenna;
Phycella Lindley, endemic to Chile, consisting
of four species, distributed from the Elqui valley
in Northern Chile up to the Arauco region in the
South, and Rhodophiala C. Presl. distributed
in Southern Brazil, Uruguay, Bolivia, Argentina
and Chile with about 40 species. Currently,
traditional taxonomic information is insufficient
to differentiate the genera of Amaryllidaceae
in Chile. For this reason cytotaxonomy was
used as a source of taxonomic evidence.
The objective of this research was a
comparative study of the karyotypes of the
three Amaryllidaceae genera growing in Chile
in order to clarify their taxonomic position.
The studied species were: Miltinea maulensis
(Ravenna) Ravenna, Phycella australis
Ravenna, Rhodophiala araucana (Phil.) Traub,
Rhodophiala montana (Phil.) Traub, and
Rhodophiala pratensis (Poepp.) Traub. The
results indicated that Miltinea maulensis and
Phycella australis have very similar karyological
characteristics: same chromosome number,
chromosome karyotype formula, and indexes.
Karyological evidence supports the hypothesis
that Miltinea is a synonym of Phycella. Further on,
the three species of Rhodophiala show similar
cytological features, such as the presence of a
NOR region on the long arm of chromosome 7,
the same chromosome number, and a nearly
equal index of karyotype asymmetry.Fil: Baeza, Carlos.
Universidad de Concepción (Chile). Departamento de BotánicaFil: Almendras, Felipe.
Universidad de Concepción (Chile). Departamento de BotánicaFil: Ruiz, Eduardo.
Universidad de Concepción (Chile). Departamento de BotánicaFil: Peñailillo, Patricio.
Universidad de Talc
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